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14952 | fschmid | 1 | /* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */ |
2 | /* cairo - a vector graphics library with display and print output |
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3 | * |
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4 | * Copyright © 2005 Red Hat, Inc |
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5 | * |
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6 | * This library is free software; you can redistribute it and/or |
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7 | * modify it either under the terms of the GNU Lesser General Public |
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8 | * License version 2.1 as published by the Free Software Foundation |
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9 | * (the "LGPL") or, at your option, under the terms of the Mozilla |
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10 | * Public License Version 1.1 (the "MPL"). If you do not alter this |
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11 | * notice, a recipient may use your version of this file under either |
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12 | * the MPL or the LGPL. |
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13 | * |
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14 | * You should have received a copy of the LGPL along with this library |
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15 | * in the file COPYING-LGPL-2.1; if not, write to the Free Software |
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18122 | mrdocs | 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
14952 | fschmid | 17 | * You should have received a copy of the MPL along with this library |
18 | * in the file COPYING-MPL-1.1 |
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19 | * |
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20 | * The contents of this file are subject to the Mozilla Public License |
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21 | * Version 1.1 (the "License"); you may not use this file except in |
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22 | * compliance with the License. You may obtain a copy of the License at |
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23 | * http://www.mozilla.org/MPL/ |
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24 | * |
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25 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY |
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26 | * OF ANY KIND, either express or implied. See the LGPL or the MPL for |
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27 | * the specific language governing rights and limitations. |
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28 | * |
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29 | * The Original Code is the cairo graphics library. |
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30 | * |
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31 | * The Initial Developer of the Original Code is Red Hat, Inc. |
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32 | * |
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33 | * Contributor(s): |
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34 | */ |
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35 | |||
36 | #define WIN32_LEAN_AND_MEAN |
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37 | /* We require Windows 2000 features such as GetGlyphIndices */ |
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38 | #if !defined(WINVER) || (WINVER < 0x0500) |
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39 | # define WINVER 0x0500 |
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40 | #endif |
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41 | #if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0500) |
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42 | # define _WIN32_WINNT 0x0500 |
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43 | #endif |
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44 | |||
45 | #include "cairoint.h" |
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46 | |||
47 | #include "cairo-win32-private.h" |
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48 | |||
49 | #ifndef SPI_GETFONTSMOOTHINGTYPE |
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50 | #define SPI_GETFONTSMOOTHINGTYPE 0x200a |
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51 | #endif |
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52 | #ifndef FE_FONTSMOOTHINGCLEARTYPE |
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53 | #define FE_FONTSMOOTHINGCLEARTYPE 2 |
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54 | #endif |
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55 | #ifndef CLEARTYPE_QUALITY |
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56 | #define CLEARTYPE_QUALITY 5 |
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57 | #endif |
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58 | #ifndef TT_PRIM_CSPLINE |
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59 | #define TT_PRIM_CSPLINE 3 |
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60 | #endif |
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61 | |||
62 | #define CMAP_TAG 0x70616d63 |
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63 | |||
64 | const cairo_scaled_font_backend_t _cairo_win32_scaled_font_backend; |
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65 | |||
66 | typedef struct { |
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67 | cairo_scaled_font_t base; |
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68 | |||
69 | LOGFONTW logfont; |
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70 | |||
71 | BYTE quality; |
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72 | |||
73 | /* We do drawing and metrics computation in a "logical space" which |
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74 | * is similar to font space, except that it is scaled by a factor |
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75 | * of the (desired font size) * (WIN32_FONT_LOGICAL_SCALE). The multiplication |
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76 | * by WIN32_FONT_LOGICAL_SCALE allows for sub-pixel precision. |
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77 | */ |
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78 | double logical_scale; |
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79 | |||
80 | /* The size we should actually request the font at from Windows; differs |
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81 | * from the logical_scale because it is quantized for orthogonal |
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82 | * transformations |
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83 | */ |
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84 | double logical_size; |
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85 | |||
86 | /* Transformations from device <=> logical space |
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87 | */ |
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88 | cairo_matrix_t logical_to_device; |
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89 | cairo_matrix_t device_to_logical; |
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90 | |||
91 | /* We special case combinations of 90-degree-rotations, scales and |
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92 | * flips ... that is transformations that take the axes to the |
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93 | * axes. If preserve_axes is true, then swap_axes/swap_x/swap_y |
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94 | * encode the 8 possibilities for orientation (4 rotation angles with |
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95 | * and without a flip), and scale_x, scale_y the scale components. |
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96 | */ |
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97 | cairo_bool_t preserve_axes; |
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98 | cairo_bool_t swap_axes; |
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99 | cairo_bool_t swap_x; |
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100 | cairo_bool_t swap_y; |
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101 | double x_scale; |
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102 | double y_scale; |
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103 | |||
104 | /* The size of the design unit of the font |
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105 | */ |
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106 | int em_square; |
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107 | |||
108 | HFONT scaled_hfont; |
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109 | HFONT unscaled_hfont; |
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110 | |||
111 | cairo_bool_t is_bitmap; |
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112 | cairo_bool_t is_type1; |
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113 | cairo_bool_t delete_scaled_hfont; |
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114 | } cairo_win32_scaled_font_t; |
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115 | |||
116 | static cairo_status_t |
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117 | _cairo_win32_scaled_font_set_metrics (cairo_win32_scaled_font_t *scaled_font); |
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118 | |||
119 | static cairo_status_t |
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120 | _cairo_win32_scaled_font_init_glyph_metrics (cairo_win32_scaled_font_t *scaled_font, |
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121 | cairo_scaled_glyph_t *scaled_glyph); |
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122 | |||
123 | static cairo_status_t |
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124 | _cairo_win32_scaled_font_init_glyph_surface (cairo_win32_scaled_font_t *scaled_font, |
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125 | cairo_scaled_glyph_t *scaled_glyph); |
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126 | |||
127 | static cairo_status_t |
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128 | _cairo_win32_scaled_font_init_glyph_path (cairo_win32_scaled_font_t *scaled_font, |
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129 | cairo_scaled_glyph_t *scaled_glyph); |
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130 | |||
131 | #define NEARLY_ZERO(d) (fabs(d) < (1. / 65536.)) |
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132 | |||
133 | static HDC |
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134 | _get_global_font_dc (void) |
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135 | { |
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136 | static HDC hdc; |
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137 | |||
138 | if (!hdc) { |
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139 | hdc = CreateCompatibleDC (NULL); |
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140 | if (!hdc) { |
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141 | _cairo_win32_print_gdi_error ("_get_global_font_dc"); |
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142 | return NULL; |
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143 | } |
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144 | |||
145 | if (!SetGraphicsMode (hdc, GM_ADVANCED)) { |
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146 | _cairo_win32_print_gdi_error ("_get_global_font_dc"); |
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147 | DeleteDC (hdc); |
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148 | return NULL; |
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149 | } |
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150 | } |
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151 | |||
152 | return hdc; |
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153 | } |
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154 | |||
155 | static cairo_status_t |
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156 | _compute_transform (cairo_win32_scaled_font_t *scaled_font, |
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157 | cairo_matrix_t *sc) |
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158 | { |
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159 | cairo_status_t status; |
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160 | |||
161 | if (NEARLY_ZERO (sc->yx) && NEARLY_ZERO (sc->xy) && |
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162 | !NEARLY_ZERO(sc->xx) && !NEARLY_ZERO(sc->yy)) { |
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163 | scaled_font->preserve_axes = TRUE; |
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164 | scaled_font->x_scale = sc->xx; |
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165 | scaled_font->swap_x = (sc->xx < 0); |
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166 | scaled_font->y_scale = sc->yy; |
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167 | scaled_font->swap_y = (sc->yy < 0); |
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168 | scaled_font->swap_axes = FALSE; |
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169 | |||
170 | } else if (NEARLY_ZERO (sc->xx) && NEARLY_ZERO (sc->yy) && |
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171 | !NEARLY_ZERO(sc->yx) && !NEARLY_ZERO(sc->xy)) { |
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172 | scaled_font->preserve_axes = TRUE; |
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173 | scaled_font->x_scale = sc->yx; |
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174 | scaled_font->swap_x = (sc->yx < 0); |
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175 | scaled_font->y_scale = sc->xy; |
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176 | scaled_font->swap_y = (sc->xy < 0); |
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177 | scaled_font->swap_axes = TRUE; |
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178 | |||
179 | } else { |
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180 | scaled_font->preserve_axes = FALSE; |
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181 | scaled_font->swap_x = scaled_font->swap_y = scaled_font->swap_axes = FALSE; |
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182 | } |
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183 | |||
184 | if (scaled_font->preserve_axes) { |
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185 | if (scaled_font->swap_x) |
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186 | scaled_font->x_scale = - scaled_font->x_scale; |
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187 | if (scaled_font->swap_y) |
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188 | scaled_font->y_scale = - scaled_font->y_scale; |
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189 | |||
190 | scaled_font->logical_scale = WIN32_FONT_LOGICAL_SCALE * scaled_font->y_scale; |
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191 | scaled_font->logical_size = WIN32_FONT_LOGICAL_SCALE * |
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192 | _cairo_lround (scaled_font->y_scale); |
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193 | } |
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194 | |||
195 | /* The font matrix has x and y "scale" components which we extract and |
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196 | * use as character scale values. |
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197 | */ |
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198 | cairo_matrix_init (&scaled_font->logical_to_device, |
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199 | sc->xx, sc->yx, sc->xy, sc->yy, 0, 0); |
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200 | |||
201 | if (!scaled_font->preserve_axes) { |
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202 | status = _cairo_matrix_compute_basis_scale_factors (&scaled_font->logical_to_device, |
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203 | &scaled_font->x_scale, &scaled_font->y_scale, |
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204 | TRUE); /* XXX: Handle vertical text */ |
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205 | if (status) |
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206 | return status; |
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207 | |||
208 | scaled_font->logical_size = _cairo_lround (WIN32_FONT_LOGICAL_SCALE * |
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209 | scaled_font->y_scale); |
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210 | scaled_font->logical_scale = WIN32_FONT_LOGICAL_SCALE * scaled_font->y_scale; |
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211 | } |
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212 | |||
213 | cairo_matrix_scale (&scaled_font->logical_to_device, |
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214 | 1.0 / scaled_font->logical_scale, 1.0 / scaled_font->logical_scale); |
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215 | |||
216 | scaled_font->device_to_logical = scaled_font->logical_to_device; |
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217 | |||
218 | status = cairo_matrix_invert (&scaled_font->device_to_logical); |
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219 | if (status) |
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220 | cairo_matrix_init_identity (&scaled_font->device_to_logical); |
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221 | |||
222 | return CAIRO_STATUS_SUCCESS; |
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223 | } |
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224 | |||
225 | static cairo_bool_t |
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226 | _have_cleartype_quality (void) |
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227 | { |
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228 | OSVERSIONINFO version_info; |
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229 | |||
230 | version_info.dwOSVersionInfoSize = sizeof (OSVERSIONINFO); |
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231 | |||
232 | if (!GetVersionEx (&version_info)) { |
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233 | _cairo_win32_print_gdi_error ("_have_cleartype_quality"); |
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234 | return FALSE; |
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235 | } |
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236 | |||
237 | return (version_info.dwMajorVersion > 5 || |
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238 | (version_info.dwMajorVersion == 5 && |
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239 | version_info.dwMinorVersion >= 1)); /* XP or newer */ |
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240 | } |
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241 | |||
242 | static BYTE |
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243 | _get_system_quality (void) |
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244 | { |
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245 | BOOL font_smoothing; |
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246 | UINT smoothing_type; |
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247 | |||
248 | if (!SystemParametersInfo (SPI_GETFONTSMOOTHING, 0, &font_smoothing, 0)) { |
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249 | _cairo_win32_print_gdi_error ("_get_system_quality"); |
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250 | return DEFAULT_QUALITY; |
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251 | } |
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252 | |||
253 | if (font_smoothing) { |
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254 | if (_have_cleartype_quality ()) { |
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255 | if (!SystemParametersInfo (SPI_GETFONTSMOOTHINGTYPE, |
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256 | 0, &smoothing_type, 0)) { |
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257 | _cairo_win32_print_gdi_error ("_get_system_quality"); |
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258 | return DEFAULT_QUALITY; |
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259 | } |
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260 | |||
261 | if (smoothing_type == FE_FONTSMOOTHINGCLEARTYPE) |
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262 | return CLEARTYPE_QUALITY; |
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263 | } |
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264 | |||
265 | return ANTIALIASED_QUALITY; |
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266 | } else { |
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267 | return DEFAULT_QUALITY; |
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268 | } |
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269 | } |
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270 | |||
271 | /* If face_hfont is non-%NULL then font_matrix must be a simple scale by some |
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272 | * factor S, ctm must be the identity, logfont->lfHeight must be -S, |
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273 | * logfont->lfWidth, logfont->lfEscapement, logfont->lfOrientation must |
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274 | * all be 0, and face_hfont is the result of calling CreateFontIndirectW on |
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275 | * logfont. |
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276 | */ |
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277 | static cairo_status_t |
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278 | _win32_scaled_font_create (LOGFONTW *logfont, |
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279 | HFONT face_hfont, |
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280 | cairo_font_face_t *font_face, |
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281 | const cairo_matrix_t *font_matrix, |
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282 | const cairo_matrix_t *ctm, |
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283 | const cairo_font_options_t *options, |
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284 | cairo_scaled_font_t **font_out) |
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285 | { |
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286 | HDC hdc; |
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287 | cairo_win32_scaled_font_t *f; |
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288 | cairo_matrix_t scale; |
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289 | cairo_status_t status; |
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290 | |||
291 | hdc = _get_global_font_dc (); |
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292 | if (hdc == NULL) |
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293 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
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294 | |||
295 | f = malloc (sizeof(cairo_win32_scaled_font_t)); |
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296 | if (f == NULL) |
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297 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
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298 | |||
299 | f->logfont = *logfont; |
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300 | |||
301 | /* We don't have any control over the hinting style or subpixel |
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302 | * order in the Win32 font API, so we ignore those parts of |
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303 | * cairo_font_options_t. We use the 'antialias' field to set |
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304 | * the 'quality'. |
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305 | * |
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306 | * XXX: The other option we could pay attention to, but don't |
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307 | * here is the hint_metrics options. |
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308 | */ |
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309 | if (options->antialias == CAIRO_ANTIALIAS_DEFAULT) |
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310 | f->quality = _get_system_quality (); |
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311 | else { |
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312 | switch (options->antialias) { |
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313 | case CAIRO_ANTIALIAS_NONE: |
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314 | f->quality = NONANTIALIASED_QUALITY; |
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315 | break; |
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316 | case CAIRO_ANTIALIAS_GRAY: |
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317 | f->quality = ANTIALIASED_QUALITY; |
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318 | break; |
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319 | case CAIRO_ANTIALIAS_SUBPIXEL: |
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320 | if (_have_cleartype_quality ()) |
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321 | f->quality = CLEARTYPE_QUALITY; |
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322 | else |
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323 | f->quality = ANTIALIASED_QUALITY; |
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324 | break; |
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325 | case CAIRO_ANTIALIAS_DEFAULT: |
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326 | ASSERT_NOT_REACHED; |
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327 | } |
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328 | } |
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329 | |||
330 | f->em_square = 0; |
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331 | f->scaled_hfont = NULL; |
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332 | f->unscaled_hfont = NULL; |
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333 | |||
334 | if (f->quality == logfont->lfQuality || |
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335 | (logfont->lfQuality == DEFAULT_QUALITY && |
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336 | options->antialias == CAIRO_ANTIALIAS_DEFAULT)) { |
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337 | /* If face_hfont is non-NULL, then we can use it to avoid creating our |
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338 | * own --- because the constraints on face_hfont mentioned above |
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339 | * guarantee it was created in exactly the same way that |
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340 | * _win32_scaled_font_get_scaled_hfont would create it. |
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341 | */ |
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342 | f->scaled_hfont = face_hfont; |
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343 | } |
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344 | /* don't delete the hfont if we're using the one passed in to us */ |
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345 | f->delete_scaled_hfont = !f->scaled_hfont; |
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346 | |||
347 | cairo_matrix_multiply (&scale, font_matrix, ctm); |
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348 | status = _compute_transform (f, &scale); |
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349 | if (status) |
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350 | goto FAIL; |
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351 | |||
352 | status = _cairo_scaled_font_init (&f->base, font_face, |
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353 | font_matrix, ctm, options, |
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354 | &_cairo_win32_scaled_font_backend); |
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355 | if (status) |
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356 | goto FAIL; |
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357 | |||
358 | status = _cairo_win32_scaled_font_set_metrics (f); |
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359 | if (status) { |
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360 | _cairo_scaled_font_fini (&f->base); |
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361 | goto FAIL; |
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362 | } |
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363 | |||
364 | *font_out = &f->base; |
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365 | return CAIRO_STATUS_SUCCESS; |
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366 | |||
367 | FAIL: |
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368 | free (f); |
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369 | return status; |
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370 | } |
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371 | |||
372 | static cairo_status_t |
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373 | _win32_scaled_font_set_world_transform (cairo_win32_scaled_font_t *scaled_font, |
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374 | HDC hdc) |
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375 | { |
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376 | XFORM xform; |
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377 | |||
378 | _cairo_matrix_to_win32_xform (&scaled_font->logical_to_device, &xform); |
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379 | |||
380 | if (!SetWorldTransform (hdc, &xform)) |
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381 | return _cairo_win32_print_gdi_error ("_win32_scaled_font_set_world_transform"); |
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382 | |||
383 | return CAIRO_STATUS_SUCCESS; |
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384 | } |
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385 | |||
386 | static cairo_status_t |
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387 | _win32_scaled_font_set_identity_transform (HDC hdc) |
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388 | { |
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389 | if (!ModifyWorldTransform (hdc, NULL, MWT_IDENTITY)) |
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390 | return _cairo_win32_print_gdi_error ("_win32_scaled_font_set_identity_transform"); |
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391 | |||
392 | return CAIRO_STATUS_SUCCESS; |
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393 | } |
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394 | |||
395 | static cairo_status_t |
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396 | _win32_scaled_font_get_scaled_hfont (cairo_win32_scaled_font_t *scaled_font, |
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397 | HFONT *hfont_out) |
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398 | { |
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399 | if (!scaled_font->scaled_hfont) { |
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400 | LOGFONTW logfont = scaled_font->logfont; |
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401 | logfont.lfHeight = -scaled_font->logical_size; |
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402 | logfont.lfWidth = 0; |
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403 | logfont.lfEscapement = 0; |
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404 | logfont.lfOrientation = 0; |
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405 | logfont.lfQuality = scaled_font->quality; |
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406 | |||
407 | scaled_font->scaled_hfont = CreateFontIndirectW (&logfont); |
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408 | if (!scaled_font->scaled_hfont) |
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409 | return _cairo_win32_print_gdi_error ("_win32_scaled_font_get_scaled_hfont"); |
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410 | } |
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411 | |||
412 | *hfont_out = scaled_font->scaled_hfont; |
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413 | return CAIRO_STATUS_SUCCESS; |
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414 | } |
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415 | |||
416 | static cairo_status_t |
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417 | _win32_scaled_font_get_unscaled_hfont (cairo_win32_scaled_font_t *scaled_font, |
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418 | HDC hdc, |
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419 | HFONT *hfont_out) |
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420 | { |
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421 | if (scaled_font->unscaled_hfont == NULL) { |
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422 | OUTLINETEXTMETRIC *otm; |
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423 | unsigned int otm_size; |
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424 | HFONT scaled_hfont; |
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425 | LOGFONTW logfont; |
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426 | cairo_status_t status; |
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427 | |||
428 | status = _win32_scaled_font_get_scaled_hfont (scaled_font, |
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429 | &scaled_hfont); |
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430 | if (status) |
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431 | return status; |
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432 | |||
433 | if (! SelectObject (hdc, scaled_hfont)) |
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434 | return _cairo_win32_print_gdi_error ("_win32_scaled_font_get_unscaled_hfont:SelectObject"); |
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435 | |||
436 | otm_size = GetOutlineTextMetrics (hdc, 0, NULL); |
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437 | if (! otm_size) |
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438 | return _cairo_win32_print_gdi_error ("_win32_scaled_font_get_unscaled_hfont:GetOutlineTextMetrics"); |
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439 | |||
440 | otm = malloc (otm_size); |
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441 | if (otm == NULL) |
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442 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
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443 | |||
444 | if (! GetOutlineTextMetrics (hdc, otm_size, otm)) { |
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445 | status = _cairo_win32_print_gdi_error ("_win32_scaled_font_get_unscaled_hfont:GetOutlineTextMetrics"); |
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446 | free (otm); |
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447 | return status; |
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448 | } |
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449 | |||
450 | scaled_font->em_square = otm->otmEMSquare; |
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451 | free (otm); |
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452 | |||
453 | logfont = scaled_font->logfont; |
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454 | logfont.lfHeight = -scaled_font->em_square; |
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455 | logfont.lfWidth = 0; |
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456 | logfont.lfEscapement = 0; |
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457 | logfont.lfOrientation = 0; |
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458 | logfont.lfQuality = scaled_font->quality; |
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459 | |||
460 | scaled_font->unscaled_hfont = CreateFontIndirectW (&logfont); |
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461 | if (! scaled_font->unscaled_hfont) |
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462 | return _cairo_win32_print_gdi_error ("_win32_scaled_font_get_unscaled_hfont:CreateIndirect"); |
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463 | } |
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464 | |||
465 | *hfont_out = scaled_font->unscaled_hfont; |
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466 | return CAIRO_STATUS_SUCCESS; |
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467 | } |
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468 | |||
469 | static cairo_status_t |
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470 | _cairo_win32_scaled_font_select_unscaled_font (cairo_scaled_font_t *scaled_font, |
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471 | HDC hdc) |
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472 | { |
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473 | cairo_status_t status; |
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474 | HFONT hfont; |
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475 | HFONT old_hfont = NULL; |
||
476 | |||
477 | status = _win32_scaled_font_get_unscaled_hfont ((cairo_win32_scaled_font_t *)scaled_font, hdc, &hfont); |
||
478 | if (status) |
||
479 | return status; |
||
480 | |||
481 | old_hfont = SelectObject (hdc, hfont); |
||
482 | if (!old_hfont) |
||
483 | return _cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_select_unscaled_font"); |
||
484 | |||
485 | status = _win32_scaled_font_set_identity_transform (hdc); |
||
486 | if (status) { |
||
487 | SelectObject (hdc, old_hfont); |
||
488 | return status; |
||
489 | } |
||
490 | |||
491 | SetMapMode (hdc, MM_TEXT); |
||
492 | |||
493 | return CAIRO_STATUS_SUCCESS; |
||
494 | } |
||
495 | |||
496 | cairo_bool_t |
||
497 | _cairo_win32_scaled_font_is_type1 (cairo_scaled_font_t *scaled_font) |
||
498 | { |
||
499 | cairo_win32_scaled_font_t *win32_scaled_font; |
||
500 | |||
501 | win32_scaled_font = (cairo_win32_scaled_font_t *) scaled_font; |
||
502 | |||
503 | return win32_scaled_font->is_type1; |
||
504 | } |
||
505 | |||
506 | cairo_bool_t |
||
507 | _cairo_win32_scaled_font_is_bitmap (cairo_scaled_font_t *scaled_font) |
||
508 | { |
||
509 | cairo_win32_scaled_font_t *win32_scaled_font; |
||
510 | |||
511 | win32_scaled_font = (cairo_win32_scaled_font_t *) scaled_font; |
||
512 | |||
513 | return win32_scaled_font->is_bitmap; |
||
514 | } |
||
515 | |||
516 | static void |
||
517 | _cairo_win32_scaled_font_done_unscaled_font (cairo_scaled_font_t *scaled_font) |
||
518 | { |
||
519 | } |
||
520 | |||
521 | /* implement the font backend interface */ |
||
522 | |||
523 | static cairo_status_t |
||
524 | _cairo_win32_font_face_create_for_toy (cairo_toy_font_face_t *toy_face, |
||
525 | cairo_font_face_t **font_face) |
||
526 | { |
||
527 | LOGFONTW logfont; |
||
528 | uint16_t *face_name; |
||
529 | int face_name_len; |
||
530 | cairo_status_t status; |
||
531 | |||
532 | status = _cairo_utf8_to_utf16 (toy_face->family, -1, |
||
533 | &face_name, &face_name_len); |
||
534 | if (status) |
||
535 | return status; |
||
536 | |||
537 | if (face_name_len > LF_FACESIZE - 1) |
||
538 | face_name_len = LF_FACESIZE - 1; |
||
539 | |||
540 | memcpy (logfont.lfFaceName, face_name, sizeof (uint16_t) * face_name_len); |
||
541 | logfont.lfFaceName[face_name_len] = 0; |
||
542 | free (face_name); |
||
543 | |||
544 | logfont.lfHeight = 0; /* filled in later */ |
||
545 | logfont.lfWidth = 0; /* filled in later */ |
||
546 | logfont.lfEscapement = 0; /* filled in later */ |
||
547 | logfont.lfOrientation = 0; /* filled in later */ |
||
548 | |||
549 | switch (toy_face->weight) { |
||
550 | case CAIRO_FONT_WEIGHT_NORMAL: |
||
551 | default: |
||
552 | logfont.lfWeight = FW_NORMAL; |
||
553 | break; |
||
554 | case CAIRO_FONT_WEIGHT_BOLD: |
||
555 | logfont.lfWeight = FW_BOLD; |
||
556 | break; |
||
557 | } |
||
558 | |||
559 | switch (toy_face->slant) { |
||
560 | case CAIRO_FONT_SLANT_NORMAL: |
||
561 | default: |
||
562 | logfont.lfItalic = FALSE; |
||
563 | break; |
||
564 | case CAIRO_FONT_SLANT_ITALIC: |
||
565 | case CAIRO_FONT_SLANT_OBLIQUE: |
||
566 | logfont.lfItalic = TRUE; |
||
567 | break; |
||
568 | } |
||
569 | |||
570 | logfont.lfUnderline = FALSE; |
||
571 | logfont.lfStrikeOut = FALSE; |
||
572 | /* The docs for LOGFONT discourage using this, since the |
||
573 | * interpretation is locale-specific, but it's not clear what |
||
574 | * would be a better alternative. |
||
575 | */ |
||
576 | logfont.lfCharSet = DEFAULT_CHARSET; |
||
577 | logfont.lfOutPrecision = OUT_DEFAULT_PRECIS; |
||
578 | logfont.lfClipPrecision = CLIP_DEFAULT_PRECIS; |
||
579 | logfont.lfQuality = DEFAULT_QUALITY; /* filled in later */ |
||
580 | logfont.lfPitchAndFamily = DEFAULT_PITCH | FF_DONTCARE; |
||
581 | |||
582 | *font_face = cairo_win32_font_face_create_for_logfontw (&logfont); |
||
583 | |||
584 | return CAIRO_STATUS_SUCCESS; |
||
585 | } |
||
586 | |||
587 | static void |
||
588 | _cairo_win32_scaled_font_fini (void *abstract_font) |
||
589 | { |
||
590 | cairo_win32_scaled_font_t *scaled_font = abstract_font; |
||
591 | |||
592 | if (scaled_font == NULL) |
||
593 | return; |
||
594 | |||
595 | if (scaled_font->scaled_hfont && scaled_font->delete_scaled_hfont) |
||
596 | DeleteObject (scaled_font->scaled_hfont); |
||
597 | |||
598 | if (scaled_font->unscaled_hfont) |
||
599 | DeleteObject (scaled_font->unscaled_hfont); |
||
600 | } |
||
601 | |||
602 | static cairo_int_status_t |
||
603 | _cairo_win32_scaled_font_type1_text_to_glyphs (cairo_win32_scaled_font_t *scaled_font, |
||
604 | double x, |
||
605 | double y, |
||
606 | const char *utf8, |
||
607 | cairo_glyph_t **glyphs, |
||
608 | int *num_glyphs) |
||
609 | { |
||
610 | uint16_t *utf16; |
||
611 | int n16; |
||
612 | int i; |
||
613 | WORD *glyph_indices = NULL; |
||
614 | cairo_status_t status; |
||
615 | double x_pos, y_pos; |
||
616 | HDC hdc = NULL; |
||
617 | cairo_matrix_t mat; |
||
618 | |||
619 | status = _cairo_utf8_to_utf16 (utf8, -1, &utf16, &n16); |
||
620 | if (status) |
||
621 | return status; |
||
622 | |||
623 | glyph_indices = _cairo_malloc_ab (n16 + 1, sizeof (WORD)); |
||
624 | if (!glyph_indices) { |
||
625 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
||
626 | goto FAIL1; |
||
627 | } |
||
628 | |||
629 | hdc = _get_global_font_dc (); |
||
630 | assert (hdc != NULL); |
||
631 | |||
632 | status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc); |
||
633 | if (status) |
||
634 | goto FAIL2; |
||
635 | |||
636 | if (GetGlyphIndicesW (hdc, utf16, n16, glyph_indices, 0) == GDI_ERROR) { |
||
637 | status = _cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_type1_text_to_glyphs:GetGlyphIndicesW"); |
||
638 | goto FAIL3; |
||
639 | } |
||
640 | |||
641 | *num_glyphs = n16; |
||
642 | *glyphs = _cairo_malloc_ab (n16, sizeof (cairo_glyph_t)); |
||
643 | if (!*glyphs) { |
||
644 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
||
645 | goto FAIL3; |
||
646 | } |
||
647 | |||
648 | x_pos = x; |
||
649 | y_pos = y; |
||
650 | |||
651 | mat = scaled_font->base.ctm; |
||
652 | status = cairo_matrix_invert (&mat); |
||
653 | assert (status == CAIRO_STATUS_SUCCESS); |
||
654 | |||
655 | _cairo_scaled_font_freeze_cache (&scaled_font->base); |
||
656 | |||
657 | for (i = 0; i < n16; i++) { |
||
658 | cairo_scaled_glyph_t *scaled_glyph; |
||
659 | |||
660 | (*glyphs)[i].index = glyph_indices[i]; |
||
661 | (*glyphs)[i].x = x_pos; |
||
662 | (*glyphs)[i].y = y_pos; |
||
663 | |||
664 | status = _cairo_scaled_glyph_lookup (&scaled_font->base, |
||
665 | glyph_indices[i], |
||
666 | CAIRO_SCALED_GLYPH_INFO_METRICS, |
||
667 | &scaled_glyph); |
||
668 | if (status) { |
||
669 | free (*glyphs); |
||
670 | *glyphs = NULL; |
||
671 | break; |
||
672 | } |
||
673 | |||
674 | x = scaled_glyph->x_advance; |
||
675 | y = scaled_glyph->y_advance; |
||
676 | cairo_matrix_transform_distance (&mat, &x, &y); |
||
677 | x_pos += x; |
||
678 | y_pos += y; |
||
679 | } |
||
680 | |||
681 | _cairo_scaled_font_thaw_cache (&scaled_font->base); |
||
682 | |||
683 | FAIL3: |
||
684 | cairo_win32_scaled_font_done_font (&scaled_font->base); |
||
685 | FAIL2: |
||
686 | free (glyph_indices); |
||
687 | FAIL1: |
||
688 | free (utf16); |
||
689 | |||
690 | return status; |
||
691 | } |
||
692 | |||
693 | static cairo_int_status_t |
||
694 | _cairo_win32_scaled_font_text_to_glyphs (void *abstract_font, |
||
695 | double x, |
||
696 | double y, |
||
697 | const char *utf8, |
||
698 | cairo_glyph_t **glyphs, |
||
699 | int *num_glyphs) |
||
700 | { |
||
701 | cairo_win32_scaled_font_t *scaled_font = abstract_font; |
||
702 | uint16_t *utf16; |
||
703 | int n16; |
||
704 | GCP_RESULTSW gcp_results; |
||
705 | unsigned int buffer_size, i; |
||
706 | WCHAR *glyph_indices = NULL; |
||
707 | int *dx = NULL; |
||
708 | cairo_status_t status; |
||
709 | double x_pos, y_pos; |
||
710 | double x_incr, y_incr; |
||
711 | HDC hdc = NULL; |
||
712 | |||
713 | /* GetCharacterPlacement() returns utf16 instead of glyph indices |
||
714 | * for Type 1 fonts. Use GetGlyphIndices for Type 1 fonts. */ |
||
715 | if (scaled_font->is_type1) |
||
716 | return _cairo_win32_scaled_font_type1_text_to_glyphs (scaled_font, |
||
717 | x, |
||
718 | y, |
||
719 | utf8, |
||
720 | glyphs, |
||
721 | num_glyphs); |
||
722 | |||
723 | /* Compute a vector in user space along the baseline of length one logical space unit */ |
||
724 | x_incr = 1; |
||
725 | y_incr = 0; |
||
726 | cairo_matrix_transform_distance (&scaled_font->base.font_matrix, &x_incr, &y_incr); |
||
727 | x_incr /= scaled_font->logical_scale; |
||
728 | y_incr /= scaled_font->logical_scale; |
||
729 | |||
730 | status = _cairo_utf8_to_utf16 (utf8, -1, &utf16, &n16); |
||
731 | if (status) |
||
732 | return status; |
||
733 | |||
734 | gcp_results.lStructSize = sizeof (GCP_RESULTS); |
||
735 | gcp_results.lpOutString = NULL; |
||
736 | gcp_results.lpOrder = NULL; |
||
737 | gcp_results.lpCaretPos = NULL; |
||
738 | gcp_results.lpClass = NULL; |
||
739 | |||
740 | buffer_size = MAX (n16 * 1.2, 16); /* Initially guess number of chars plus a few */ |
||
741 | if (buffer_size > INT_MAX) { |
||
742 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
||
743 | goto FAIL1; |
||
744 | } |
||
745 | |||
746 | hdc = _get_global_font_dc (); |
||
747 | assert (hdc != NULL); |
||
748 | |||
749 | status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc); |
||
750 | if (status) |
||
751 | goto FAIL1; |
||
752 | |||
753 | while (TRUE) { |
||
754 | if (glyph_indices) { |
||
755 | free (glyph_indices); |
||
756 | glyph_indices = NULL; |
||
757 | } |
||
758 | if (dx) { |
||
759 | free (dx); |
||
760 | dx = NULL; |
||
761 | } |
||
762 | |||
763 | glyph_indices = _cairo_malloc_ab (buffer_size, sizeof (WCHAR)); |
||
764 | dx = _cairo_malloc_ab (buffer_size, sizeof (int)); |
||
765 | if (!glyph_indices || !dx) { |
||
766 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
||
767 | goto FAIL2; |
||
768 | } |
||
769 | |||
770 | gcp_results.nGlyphs = buffer_size; |
||
771 | gcp_results.lpDx = dx; |
||
772 | gcp_results.lpGlyphs = glyph_indices; |
||
773 | |||
774 | if (!GetCharacterPlacementW (hdc, utf16, n16, |
||
775 | 0, |
||
776 | &gcp_results, |
||
777 | GCP_DIACRITIC | GCP_LIGATE | GCP_GLYPHSHAPE | GCP_REORDER)) { |
||
778 | status = _cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_text_to_glyphs"); |
||
779 | goto FAIL2; |
||
780 | } |
||
781 | |||
782 | if (gcp_results.lpDx && gcp_results.lpGlyphs) |
||
783 | break; |
||
784 | |||
785 | /* Too small a buffer, try again */ |
||
786 | |||
787 | buffer_size += buffer_size / 2; |
||
788 | if (buffer_size > INT_MAX) { |
||
789 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
||
790 | goto FAIL2; |
||
791 | } |
||
792 | } |
||
793 | |||
794 | *num_glyphs = gcp_results.nGlyphs; |
||
795 | *glyphs = _cairo_malloc_ab (gcp_results.nGlyphs, sizeof (cairo_glyph_t)); |
||
796 | if (!*glyphs) { |
||
797 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
||
798 | goto FAIL2; |
||
799 | } |
||
800 | |||
801 | x_pos = x; |
||
802 | y_pos = y; |
||
803 | |||
804 | for (i = 0; i < gcp_results.nGlyphs; i++) { |
||
805 | (*glyphs)[i].index = glyph_indices[i]; |
||
806 | (*glyphs)[i].x = x_pos ; |
||
807 | (*glyphs)[i].y = y_pos; |
||
808 | |||
809 | x_pos += x_incr * dx[i]; |
||
810 | y_pos += y_incr * dx[i]; |
||
811 | } |
||
812 | |||
813 | FAIL2: |
||
814 | if (glyph_indices) |
||
815 | free (glyph_indices); |
||
816 | if (dx) |
||
817 | free (dx); |
||
818 | |||
819 | cairo_win32_scaled_font_done_font (&scaled_font->base); |
||
820 | |||
821 | FAIL1: |
||
822 | free (utf16); |
||
823 | |||
824 | return status; |
||
825 | } |
||
826 | |||
827 | static unsigned long |
||
828 | _cairo_win32_scaled_font_ucs4_to_index (void *abstract_font, |
||
829 | uint32_t ucs4) |
||
830 | { |
||
831 | cairo_win32_scaled_font_t *scaled_font = abstract_font; |
||
832 | wchar_t unicode[2]; |
||
833 | WORD glyph_index; |
||
834 | HDC hdc = NULL; |
||
835 | cairo_status_t status; |
||
836 | |||
837 | hdc = _get_global_font_dc (); |
||
838 | assert (hdc != NULL); |
||
839 | |||
840 | status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc); |
||
841 | if (status) |
||
842 | return 0; |
||
843 | |||
844 | unicode[0] = ucs4; |
||
845 | unicode[1] = 0; |
||
846 | if (GetGlyphIndicesW (hdc, unicode, 1, &glyph_index, 0) == GDI_ERROR) { |
||
847 | _cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_ucs4_to_index:GetGlyphIndicesW"); |
||
848 | glyph_index = 0; |
||
849 | } |
||
850 | |||
851 | cairo_win32_scaled_font_done_font (&scaled_font->base); |
||
852 | |||
853 | return glyph_index; |
||
854 | } |
||
855 | |||
856 | static cairo_status_t |
||
857 | _cairo_win32_scaled_font_set_metrics (cairo_win32_scaled_font_t *scaled_font) |
||
858 | { |
||
859 | cairo_status_t status; |
||
860 | cairo_font_extents_t extents; |
||
861 | |||
862 | TEXTMETRIC metrics; |
||
863 | HDC hdc; |
||
864 | |||
865 | hdc = _get_global_font_dc (); |
||
866 | assert (hdc != NULL); |
||
867 | |||
868 | if (scaled_font->preserve_axes || scaled_font->base.options.hint_metrics == CAIRO_HINT_METRICS_OFF) { |
||
869 | /* For 90-degree rotations (including 0), we get the metrics |
||
870 | * from the GDI in logical space, then convert back to font space |
||
871 | */ |
||
872 | status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc); |
||
873 | if (status) |
||
874 | return status; |
||
875 | GetTextMetrics (hdc, &metrics); |
||
876 | cairo_win32_scaled_font_done_font (&scaled_font->base); |
||
877 | |||
878 | extents.ascent = metrics.tmAscent / scaled_font->logical_scale; |
||
879 | extents.descent = metrics.tmDescent / scaled_font->logical_scale; |
||
880 | |||
881 | extents.height = (metrics.tmHeight + metrics.tmExternalLeading) / scaled_font->logical_scale; |
||
882 | extents.max_x_advance = metrics.tmMaxCharWidth / scaled_font->logical_scale; |
||
883 | extents.max_y_advance = 0; |
||
884 | |||
885 | } else { |
||
886 | /* For all other transformations, we use the design metrics |
||
887 | * of the font. The GDI results from GetTextMetrics() on a |
||
888 | * transformed font are inexplicably large and we want to |
||
889 | * avoid them. |
||
890 | */ |
||
891 | status = _cairo_win32_scaled_font_select_unscaled_font (&scaled_font->base, hdc); |
||
892 | if (status) |
||
893 | return status; |
||
894 | GetTextMetrics (hdc, &metrics); |
||
895 | _cairo_win32_scaled_font_done_unscaled_font (&scaled_font->base); |
||
896 | |||
897 | extents.ascent = (double)metrics.tmAscent / scaled_font->em_square; |
||
898 | extents.descent = (double)metrics.tmDescent / scaled_font->em_square; |
||
899 | extents.height = (double)(metrics.tmHeight + metrics.tmExternalLeading) / scaled_font->em_square; |
||
900 | extents.max_x_advance = (double)(metrics.tmMaxCharWidth) / scaled_font->em_square; |
||
901 | extents.max_y_advance = 0; |
||
902 | |||
903 | } |
||
904 | |||
905 | scaled_font->is_bitmap = !(metrics.tmPitchAndFamily & TMPF_VECTOR); |
||
906 | |||
907 | /* Need to determine if this is a Type 1 font for the special |
||
908 | * handling in _text_to_glyphs. Unlike TrueType or OpenType, |
||
909 | * Type1 fonts do not have a "cmap" table (or any other table). |
||
910 | * However GetFontData() will retrieve a Type1 font when |
||
911 | * requesting that GetFontData() retrieve data from the start of |
||
912 | * the file. This is to distinguish Type1 from stroke fonts such |
||
913 | * as "Script" and "Modern". The TMPF_TRUETYPE test is redundant |
||
914 | * but improves performance for the most common fonts. |
||
915 | */ |
||
916 | scaled_font->is_type1 = FALSE; |
||
917 | if (!(metrics.tmPitchAndFamily & TMPF_TRUETYPE) && |
||
918 | (metrics.tmPitchAndFamily & TMPF_VECTOR)) |
||
919 | { |
||
920 | if ((GetFontData (hdc, CMAP_TAG, 0, NULL, 0) == GDI_ERROR) && |
||
921 | (GetFontData (hdc, 0, 0, NULL, 0) != GDI_ERROR)) |
||
922 | { |
||
923 | scaled_font->is_type1 = TRUE; |
||
924 | } |
||
925 | } |
||
926 | |||
927 | return _cairo_scaled_font_set_metrics (&scaled_font->base, &extents); |
||
928 | } |
||
929 | |||
930 | static cairo_status_t |
||
931 | _cairo_win32_scaled_font_init_glyph_metrics (cairo_win32_scaled_font_t *scaled_font, |
||
932 | cairo_scaled_glyph_t *scaled_glyph) |
||
933 | { |
||
934 | static const MAT2 matrix = { { 0, 1 }, { 0, 0 }, { 0, 0 }, { 0, 1 } }; |
||
935 | GLYPHMETRICS metrics; |
||
936 | cairo_status_t status; |
||
937 | cairo_text_extents_t extents; |
||
938 | HDC hdc; |
||
939 | |||
940 | hdc = _get_global_font_dc (); |
||
941 | assert (hdc != NULL); |
||
942 | |||
943 | if (scaled_font->is_bitmap) { |
||
944 | /* GetGlyphOutline will not work. Assume that the glyph does not extend outside the font box. */ |
||
945 | cairo_font_extents_t font_extents; |
||
946 | INT width = 0; |
||
947 | UINT charIndex = _cairo_scaled_glyph_index (scaled_glyph); |
||
948 | |||
949 | cairo_scaled_font_extents (&scaled_font->base, &font_extents); |
||
950 | |||
951 | status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc); |
||
952 | if (status) |
||
953 | return status; |
||
954 | |||
955 | if (!GetCharWidth32(hdc, charIndex, charIndex, &width)) { |
||
956 | status = _cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_init_glyph_metrics:GetCharWidth32"); |
||
957 | width = 0; |
||
958 | } |
||
959 | cairo_win32_scaled_font_done_font (&scaled_font->base); |
||
960 | if (status) |
||
961 | return status; |
||
962 | |||
963 | extents.x_bearing = 0; |
||
964 | extents.y_bearing = scaled_font->base.ctm.yy * (-font_extents.ascent / scaled_font->y_scale); |
||
965 | extents.width = width / (WIN32_FONT_LOGICAL_SCALE * scaled_font->x_scale); |
||
966 | extents.height = scaled_font->base.ctm.yy * (font_extents.ascent + font_extents.descent) / scaled_font->y_scale; |
||
967 | extents.x_advance = extents.width; |
||
968 | extents.y_advance = 0; |
||
969 | } else if (scaled_font->preserve_axes && scaled_font->base.options.hint_style != CAIRO_HINT_METRICS_OFF) { |
||
970 | /* If we aren't rotating / skewing the axes, then we get the metrics |
||
971 | * from the GDI in device space and convert to font space. |
||
972 | */ |
||
973 | status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc); |
||
974 | if (status) |
||
975 | return status; |
||
976 | |||
977 | if (GetGlyphOutlineW (hdc, _cairo_scaled_glyph_index (scaled_glyph), |
||
978 | GGO_METRICS | GGO_GLYPH_INDEX, |
||
979 | &metrics, 0, NULL, &matrix) == GDI_ERROR) { |
||
980 | memset (&metrics, 0, sizeof (GLYPHMETRICS)); |
||
981 | } |
||
982 | cairo_win32_scaled_font_done_font (&scaled_font->base); |
||
983 | |||
984 | if (scaled_font->swap_axes) { |
||
985 | extents.x_bearing = - metrics.gmptGlyphOrigin.y / scaled_font->y_scale; |
||
986 | extents.y_bearing = metrics.gmptGlyphOrigin.x / scaled_font->x_scale; |
||
987 | extents.width = metrics.gmBlackBoxY / scaled_font->y_scale; |
||
988 | extents.height = metrics.gmBlackBoxX / scaled_font->x_scale; |
||
989 | extents.x_advance = metrics.gmCellIncY / scaled_font->x_scale; |
||
990 | extents.y_advance = metrics.gmCellIncX / scaled_font->y_scale; |
||
991 | } else { |
||
992 | extents.x_bearing = metrics.gmptGlyphOrigin.x / scaled_font->x_scale; |
||
993 | extents.y_bearing = - metrics.gmptGlyphOrigin.y / scaled_font->y_scale; |
||
994 | extents.width = metrics.gmBlackBoxX / scaled_font->x_scale; |
||
995 | extents.height = metrics.gmBlackBoxY / scaled_font->y_scale; |
||
996 | extents.x_advance = metrics.gmCellIncX / scaled_font->x_scale; |
||
997 | extents.y_advance = metrics.gmCellIncY / scaled_font->y_scale; |
||
998 | } |
||
999 | |||
1000 | if (scaled_font->swap_x) { |
||
1001 | extents.x_bearing = (- extents.x_bearing - extents.width); |
||
1002 | extents.x_advance = - extents.x_advance; |
||
1003 | } |
||
1004 | |||
1005 | if (scaled_font->swap_y) { |
||
1006 | extents.y_bearing = (- extents.y_bearing - extents.height); |
||
1007 | extents.y_advance = - extents.y_advance; |
||
1008 | } |
||
1009 | |||
1010 | } else { |
||
1011 | /* For all other transformations, we use the design metrics |
||
1012 | * of the font. |
||
1013 | */ |
||
1014 | status = _cairo_win32_scaled_font_select_unscaled_font (&scaled_font->base, hdc); |
||
1015 | if (status) |
||
1016 | return status; |
||
1017 | |||
1018 | if (GetGlyphOutlineW (hdc, _cairo_scaled_glyph_index (scaled_glyph), |
||
1019 | GGO_METRICS | GGO_GLYPH_INDEX, |
||
1020 | &metrics, 0, NULL, &matrix) == GDI_ERROR) { |
||
1021 | memset (&metrics, 0, sizeof (GLYPHMETRICS)); |
||
1022 | } |
||
1023 | _cairo_win32_scaled_font_done_unscaled_font (&scaled_font->base); |
||
1024 | |||
1025 | extents.x_bearing = (double)metrics.gmptGlyphOrigin.x / scaled_font->em_square; |
||
1026 | extents.y_bearing = - (double)metrics.gmptGlyphOrigin.y / scaled_font->em_square; |
||
1027 | extents.width = (double)metrics.gmBlackBoxX / scaled_font->em_square; |
||
1028 | extents.height = (double)metrics.gmBlackBoxY / scaled_font->em_square; |
||
1029 | extents.x_advance = (double)metrics.gmCellIncX / scaled_font->em_square; |
||
1030 | extents.y_advance = (double)metrics.gmCellIncY / scaled_font->em_square; |
||
1031 | } |
||
1032 | |||
1033 | _cairo_scaled_glyph_set_metrics (scaled_glyph, |
||
1034 | &scaled_font->base, |
||
1035 | &extents); |
||
1036 | |||
1037 | return CAIRO_STATUS_SUCCESS; |
||
1038 | } |
||
1039 | |||
1040 | /* Not currently used code, but may be useful in the future if we add |
||
1041 | * back the capability to the scaled font backend interface to get the |
||
1042 | * actual device space bbox rather than computing it from the |
||
1043 | * font-space metrics. |
||
1044 | */ |
||
1045 | #if 0 |
||
1046 | static cairo_status_t |
||
1047 | _cairo_win32_scaled_font_glyph_bbox (void *abstract_font, |
||
1048 | const cairo_glyph_t *glyphs, |
||
1049 | int num_glyphs, |
||
1050 | cairo_box_t *bbox) |
||
1051 | { |
||
1052 | static const MAT2 matrix = { { 0, 1 }, { 0, 0 }, { 0, 0 }, { 0, 1 } }; |
||
1053 | cairo_win32_scaled_font_t *scaled_font = abstract_font; |
||
1054 | int x1 = 0, x2 = 0, y1 = 0, y2 = 0; |
||
1055 | |||
1056 | if (num_glyphs > 0) { |
||
1057 | HDC hdc; |
||
1058 | GLYPHMETRICS metrics; |
||
1059 | cairo_status_t status; |
||
1060 | int i; |
||
1061 | |||
1062 | hdc = _get_global_font_dc (); |
||
1063 | assert (hdc != NULL); |
||
1064 | |||
1065 | status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc); |
||
1066 | if (status) |
||
1067 | return status; |
||
1068 | |||
1069 | for (i = 0; i < num_glyphs; i++) { |
||
1070 | int x = _cairo_lround (glyphs[i].x); |
||
1071 | int y = _cairo_lround (glyphs[i].y); |
||
1072 | |||
1073 | GetGlyphOutlineW (hdc, glyphs[i].index, GGO_METRICS | GGO_GLYPH_INDEX, |
||
1074 | &metrics, 0, NULL, &matrix); |
||
1075 | |||
1076 | if (i == 0 || x1 > x + metrics.gmptGlyphOrigin.x) |
||
1077 | x1 = x + metrics.gmptGlyphOrigin.x; |
||
1078 | if (i == 0 || y1 > y - metrics.gmptGlyphOrigin.y) |
||
1079 | y1 = y - metrics.gmptGlyphOrigin.y; |
||
1080 | if (i == 0 || x2 < x + metrics.gmptGlyphOrigin.x + (int)metrics.gmBlackBoxX) |
||
1081 | x2 = x + metrics.gmptGlyphOrigin.x + (int)metrics.gmBlackBoxX; |
||
1082 | if (i == 0 || y2 < y - metrics.gmptGlyphOrigin.y + (int)metrics.gmBlackBoxY) |
||
1083 | y2 = y - metrics.gmptGlyphOrigin.y + (int)metrics.gmBlackBoxY; |
||
1084 | } |
||
1085 | |||
1086 | cairo_win32_scaled_font_done_font (&scaled_font->base); |
||
1087 | } |
||
1088 | |||
1089 | bbox->p1.x = _cairo_fixed_from_int (x1); |
||
1090 | bbox->p1.y = _cairo_fixed_from_int (y1); |
||
1091 | bbox->p2.x = _cairo_fixed_from_int (x2); |
||
1092 | bbox->p2.y = _cairo_fixed_from_int (y2); |
||
1093 | |||
1094 | return CAIRO_STATUS_SUCCESS; |
||
1095 | } |
||
1096 | #endif |
||
1097 | |||
1098 | typedef struct { |
||
1099 | cairo_win32_scaled_font_t *scaled_font; |
||
1100 | HDC hdc; |
||
1101 | |||
1102 | cairo_array_t glyphs; |
||
1103 | cairo_array_t dx; |
||
1104 | |||
1105 | int start_x; |
||
1106 | int last_x; |
||
1107 | int last_y; |
||
1108 | } cairo_glyph_state_t; |
||
1109 | |||
1110 | static void |
||
1111 | _start_glyphs (cairo_glyph_state_t *state, |
||
1112 | cairo_win32_scaled_font_t *scaled_font, |
||
1113 | HDC hdc) |
||
1114 | { |
||
1115 | state->hdc = hdc; |
||
1116 | state->scaled_font = scaled_font; |
||
1117 | |||
1118 | _cairo_array_init (&state->glyphs, sizeof (WCHAR)); |
||
1119 | _cairo_array_init (&state->dx, sizeof (int)); |
||
1120 | } |
||
1121 | |||
1122 | static cairo_status_t |
||
1123 | _flush_glyphs (cairo_glyph_state_t *state) |
||
1124 | { |
||
1125 | cairo_status_t status; |
||
1126 | int dx = 0; |
||
1127 | WCHAR * elements; |
||
1128 | int * dx_elements; |
||
1129 | |||
1130 | status = _cairo_array_append (&state->dx, &dx); |
||
1131 | if (status) |
||
1132 | return status; |
||
1133 | |||
1134 | elements = _cairo_array_index (&state->glyphs, 0); |
||
1135 | dx_elements = _cairo_array_index (&state->dx, 0); |
||
1136 | if (!ExtTextOutW (state->hdc, |
||
1137 | state->start_x, state->last_y, |
||
1138 | ETO_GLYPH_INDEX, |
||
1139 | NULL, |
||
1140 | elements, |
||
1141 | state->glyphs.num_elements, |
||
1142 | dx_elements)) { |
||
1143 | return _cairo_win32_print_gdi_error ("_flush_glyphs"); |
||
1144 | } |
||
1145 | |||
1146 | _cairo_array_truncate (&state->glyphs, 0); |
||
1147 | _cairo_array_truncate (&state->dx, 0); |
||
1148 | |||
1149 | return CAIRO_STATUS_SUCCESS; |
||
1150 | } |
||
1151 | |||
1152 | static cairo_status_t |
||
1153 | _add_glyph (cairo_glyph_state_t *state, |
||
1154 | unsigned long index, |
||
1155 | double device_x, |
||
1156 | double device_y) |
||
1157 | { |
||
1158 | cairo_status_t status; |
||
1159 | double user_x = device_x; |
||
1160 | double user_y = device_y; |
||
1161 | WCHAR glyph_index = index; |
||
1162 | int logical_x, logical_y; |
||
1163 | |||
1164 | cairo_matrix_transform_point (&state->scaled_font->device_to_logical, &user_x, &user_y); |
||
1165 | |||
1166 | logical_x = _cairo_lround (user_x); |
||
1167 | logical_y = _cairo_lround (user_y); |
||
1168 | |||
1169 | if (state->glyphs.num_elements > 0) { |
||
1170 | int dx; |
||
1171 | |||
1172 | if (logical_y != state->last_y) { |
||
1173 | status = _flush_glyphs (state); |
||
1174 | if (status) |
||
1175 | return status; |
||
1176 | state->start_x = logical_x; |
||
1177 | } else { |
||
1178 | dx = logical_x - state->last_x; |
||
1179 | status = _cairo_array_append (&state->dx, &dx); |
||
1180 | if (status) |
||
1181 | return status; |
||
1182 | } |
||
1183 | } else { |
||
1184 | state->start_x = logical_x; |
||
1185 | } |
||
1186 | |||
1187 | state->last_x = logical_x; |
||
1188 | state->last_y = logical_y; |
||
1189 | |||
1190 | status = _cairo_array_append (&state->glyphs, &glyph_index); |
||
1191 | if (status) |
||
1192 | return status; |
||
1193 | |||
1194 | return CAIRO_STATUS_SUCCESS; |
||
1195 | } |
||
1196 | |||
1197 | static cairo_status_t |
||
1198 | _finish_glyphs (cairo_glyph_state_t *state) |
||
1199 | { |
||
1200 | cairo_status_t status; |
||
1201 | |||
1202 | status = _flush_glyphs (state); |
||
1203 | |||
1204 | _cairo_array_fini (&state->glyphs); |
||
1205 | _cairo_array_fini (&state->dx); |
||
1206 | |||
1207 | return status; |
||
1208 | } |
||
1209 | |||
1210 | static cairo_status_t |
||
1211 | _draw_glyphs_on_surface (cairo_win32_surface_t *surface, |
||
1212 | cairo_win32_scaled_font_t *scaled_font, |
||
1213 | COLORREF color, |
||
1214 | int x_offset, |
||
1215 | int y_offset, |
||
1216 | const cairo_glyph_t *glyphs, |
||
1217 | int num_glyphs) |
||
1218 | { |
||
1219 | cairo_glyph_state_t state; |
||
1220 | cairo_status_t status, status2; |
||
1221 | int i; |
||
1222 | |||
1223 | if (!SaveDC (surface->dc)) |
||
1224 | return _cairo_win32_print_gdi_error ("_draw_glyphs_on_surface:SaveDC"); |
||
1225 | |||
1226 | status = cairo_win32_scaled_font_select_font (&scaled_font->base, surface->dc); |
||
1227 | if (status) |
||
1228 | goto FAIL1; |
||
1229 | |||
1230 | SetTextColor (surface->dc, color); |
||
1231 | SetTextAlign (surface->dc, TA_BASELINE | TA_LEFT); |
||
1232 | SetBkMode (surface->dc, TRANSPARENT); |
||
1233 | |||
1234 | _start_glyphs (&state, scaled_font, surface->dc); |
||
1235 | |||
1236 | for (i = 0; i < num_glyphs; i++) { |
||
1237 | status = _add_glyph (&state, glyphs[i].index, |
||
1238 | glyphs[i].x - x_offset, glyphs[i].y - y_offset); |
||
1239 | if (status) |
||
1240 | goto FAIL2; |
||
1241 | } |
||
1242 | |||
1243 | FAIL2: |
||
1244 | status2 = _finish_glyphs (&state); |
||
1245 | if (status == CAIRO_STATUS_SUCCESS) |
||
1246 | status = status2; |
||
1247 | |||
1248 | cairo_win32_scaled_font_done_font (&scaled_font->base); |
||
1249 | FAIL1: |
||
1250 | RestoreDC (surface->dc, -1); |
||
1251 | |||
1252 | return status; |
||
1253 | } |
||
1254 | |||
1255 | /* Duplicate the green channel of a 4-channel mask in the alpha channel, then |
||
1256 | * invert the whole mask. |
||
1257 | */ |
||
1258 | static void |
||
1259 | _compute_argb32_mask_alpha (cairo_win32_surface_t *mask_surface) |
||
1260 | { |
||
1261 | cairo_image_surface_t *image = (cairo_image_surface_t *)mask_surface->image; |
||
1262 | int i, j; |
||
1263 | |||
1264 | for (i = 0; i < image->height; i++) { |
||
1265 | uint32_t *p = (uint32_t *) (image->data + i * image->stride); |
||
1266 | for (j = 0; j < image->width; j++) { |
||
1267 | *p = 0xffffffff ^ (*p | ((*p & 0x0000ff00) << 16)); |
||
1268 | p++; |
||
1269 | } |
||
1270 | } |
||
1271 | } |
||
1272 | |||
1273 | /* Invert a mask |
||
1274 | */ |
||
1275 | static void |
||
1276 | _invert_argb32_mask (cairo_win32_surface_t *mask_surface) |
||
1277 | { |
||
1278 | cairo_image_surface_t *image = (cairo_image_surface_t *)mask_surface->image; |
||
1279 | int i, j; |
||
1280 | |||
1281 | for (i = 0; i < image->height; i++) { |
||
1282 | uint32_t *p = (uint32_t *) (image->data + i * image->stride); |
||
1283 | for (j = 0; j < image->width; j++) { |
||
1284 | *p = 0xffffffff ^ *p; |
||
1285 | p++; |
||
1286 | } |
||
1287 | } |
||
1288 | } |
||
1289 | |||
1290 | /* Compute an alpha-mask from a monochrome RGB24 image |
||
1291 | */ |
||
1292 | static cairo_surface_t * |
||
1293 | _compute_a8_mask (cairo_win32_surface_t *mask_surface) |
||
1294 | { |
||
1295 | cairo_image_surface_t *image24 = (cairo_image_surface_t *)mask_surface->image; |
||
1296 | cairo_image_surface_t *image8; |
||
1297 | int i, j; |
||
1298 | |||
1299 | if (image24->base.status) |
||
1300 | return cairo_surface_reference (&image24->base); |
||
1301 | |||
1302 | image8 = (cairo_image_surface_t *)cairo_image_surface_create (CAIRO_FORMAT_A8, |
||
1303 | image24->width, image24->height); |
||
1304 | if (image8->base.status) |
||
1305 | return &image8->base; |
||
1306 | |||
1307 | for (i = 0; i < image24->height; i++) { |
||
1308 | uint32_t *p = (uint32_t *) (image24->data + i * image24->stride); |
||
1309 | unsigned char *q = (unsigned char *) (image8->data + i * image8->stride); |
||
1310 | |||
1311 | for (j = 0; j < image24->width; j++) { |
||
1312 | *q = 255 - ((*p & 0x0000ff00) >> 8); |
||
1313 | p++; |
||
1314 | q++; |
||
1315 | } |
||
1316 | } |
||
1317 | |||
1318 | return &image8->base; |
||
1319 | } |
||
1320 | |||
1321 | static cairo_int_status_t |
||
1322 | _cairo_win32_scaled_font_glyph_init (void *abstract_font, |
||
1323 | cairo_scaled_glyph_t *scaled_glyph, |
||
1324 | cairo_scaled_glyph_info_t info) |
||
1325 | { |
||
1326 | cairo_win32_scaled_font_t *scaled_font = abstract_font; |
||
1327 | cairo_status_t status; |
||
1328 | |||
1329 | if ((info & CAIRO_SCALED_GLYPH_INFO_METRICS) != 0) { |
||
1330 | status = _cairo_win32_scaled_font_init_glyph_metrics (scaled_font, scaled_glyph); |
||
1331 | if (status) |
||
1332 | return status; |
||
1333 | } |
||
1334 | |||
1335 | if (info & CAIRO_SCALED_GLYPH_INFO_SURFACE) { |
||
1336 | status = _cairo_win32_scaled_font_init_glyph_surface (scaled_font, scaled_glyph); |
||
1337 | if (status) |
||
1338 | return status; |
||
1339 | } |
||
1340 | |||
1341 | if ((info & CAIRO_SCALED_GLYPH_INFO_PATH) != 0) { |
||
1342 | status = _cairo_win32_scaled_font_init_glyph_path (scaled_font, scaled_glyph); |
||
1343 | if (status) |
||
1344 | return status; |
||
1345 | } |
||
1346 | |||
1347 | return CAIRO_STATUS_SUCCESS; |
||
1348 | } |
||
1349 | |||
1350 | static cairo_int_status_t |
||
1351 | _cairo_win32_scaled_font_show_glyphs (void *abstract_font, |
||
1352 | cairo_operator_t op, |
||
1353 | const cairo_pattern_t *pattern, |
||
1354 | cairo_surface_t *generic_surface, |
||
1355 | int source_x, |
||
1356 | int source_y, |
||
1357 | int dest_x, |
||
1358 | int dest_y, |
||
1359 | unsigned int width, |
||
1360 | unsigned int height, |
||
1361 | cairo_glyph_t *glyphs, |
||
1362 | int num_glyphs, |
||
1363 | cairo_region_t *clip_region, |
||
1364 | int *remaining_glyphs) |
||
1365 | { |
||
1366 | cairo_win32_scaled_font_t *scaled_font = abstract_font; |
||
1367 | cairo_win32_surface_t *surface = (cairo_win32_surface_t *)generic_surface; |
||
1368 | cairo_status_t status; |
||
1369 | |||
1370 | if (width == 0 || height == 0) |
||
1371 | return CAIRO_STATUS_SUCCESS; |
||
1372 | |||
1373 | if (_cairo_surface_is_win32 (generic_surface) && |
||
1374 | surface->format == CAIRO_FORMAT_RGB24 && |
||
1375 | op == CAIRO_OPERATOR_OVER && |
||
1376 | _cairo_pattern_is_opaque_solid (pattern)) { |
||
1377 | |||
1378 | cairo_solid_pattern_t *solid_pattern = (cairo_solid_pattern_t *)pattern; |
||
1379 | |||
1380 | /* When compositing OVER on a GDI-understood surface, with a |
||
1381 | * solid opaque color, we can just call ExtTextOut directly. |
||
1382 | */ |
||
1383 | COLORREF new_color; |
||
1384 | |||
1385 | status = _cairo_win32_surface_set_clip_region (surface, clip_region); |
||
1386 | if (unlikely (status)) |
||
1387 | return status; |
||
1388 | |||
1389 | new_color = RGB (((int)solid_pattern->color.red_short) >> 8, |
||
1390 | ((int)solid_pattern->color.green_short) >> 8, |
||
1391 | ((int)solid_pattern->color.blue_short) >> 8); |
||
1392 | |||
1393 | return _draw_glyphs_on_surface (surface, scaled_font, new_color, |
||
1394 | 0, 0, |
||
1395 | glyphs, num_glyphs); |
||
1396 | } else { |
||
1397 | /* Otherwise, we need to draw using software fallbacks. We create a mask |
||
1398 | * surface by drawing the the glyphs onto a DIB, black-on-white then |
||
1399 | * inverting. GDI outputs gamma-corrected images so inverted black-on-white |
||
1400 | * is very different from white-on-black. We favor the more common |
||
1401 | * case where the final output is dark-on-light. |
||
1402 | */ |
||
1403 | cairo_win32_surface_t *tmp_surface; |
||
1404 | cairo_surface_t *mask_surface; |
||
1405 | cairo_surface_pattern_t mask; |
||
1406 | RECT r; |
||
1407 | |||
1408 | tmp_surface = (cairo_win32_surface_t *)cairo_win32_surface_create_with_dib (CAIRO_FORMAT_ARGB32, width, height); |
||
1409 | if (tmp_surface->base.status) |
||
1410 | return tmp_surface->base.status; |
||
1411 | |||
1412 | r.left = 0; |
||
1413 | r.top = 0; |
||
1414 | r.right = width; |
||
1415 | r.bottom = height; |
||
1416 | FillRect (tmp_surface->dc, &r, GetStockObject (WHITE_BRUSH)); |
||
1417 | |||
1418 | status = _draw_glyphs_on_surface (tmp_surface, |
||
1419 | scaled_font, RGB (0, 0, 0), |
||
1420 | dest_x, dest_y, |
||
1421 | glyphs, num_glyphs); |
||
1422 | if (status) { |
||
1423 | cairo_surface_destroy (&tmp_surface->base); |
||
1424 | return status; |
||
1425 | } |
||
1426 | |||
1427 | if (scaled_font->quality == CLEARTYPE_QUALITY) { |
||
1428 | /* For ClearType, we need a 4-channel mask. If we are compositing on |
||
1429 | * a surface with alpha, we need to compute the alpha channel of |
||
1430 | * the mask (we just copy the green channel). But for a destination |
||
1431 | * surface without alpha the alpha channel of the mask is ignored |
||
1432 | */ |
||
1433 | |||
1434 | if (surface->format != CAIRO_FORMAT_RGB24) |
||
1435 | _compute_argb32_mask_alpha (tmp_surface); |
||
1436 | else |
||
1437 | _invert_argb32_mask (tmp_surface); |
||
1438 | |||
1439 | mask_surface = &tmp_surface->base; |
||
1440 | |||
1441 | /* XXX: Hacky, should expose this in cairo_image_surface */ |
||
1442 | pixman_image_set_component_alpha (((cairo_image_surface_t *)tmp_surface->image)->pixman_image, TRUE); |
||
1443 | |||
1444 | } else { |
||
1445 | mask_surface = _compute_a8_mask (tmp_surface); |
||
1446 | cairo_surface_destroy (&tmp_surface->base); |
||
1447 | status = mask_surface->status; |
||
1448 | if (status) |
||
1449 | return status; |
||
1450 | } |
||
1451 | |||
1452 | /* For op == OVER, no-cleartype, a possible optimization here is to |
||
1453 | * draw onto an intermediate ARGB32 surface and alpha-blend that with the |
||
1454 | * destination |
||
1455 | */ |
||
1456 | _cairo_pattern_init_for_surface (&mask, mask_surface); |
||
1457 | |||
1458 | status = _cairo_surface_composite (op, pattern, |
||
1459 | &mask.base, |
||
1460 | &surface->base, |
||
1461 | source_x, source_y, |
||
1462 | 0, 0, |
||
1463 | dest_x, dest_y, |
||
1464 | width, height, |
||
1465 | clip_region); |
||
1466 | |||
1467 | _cairo_pattern_fini (&mask.base); |
||
1468 | |||
1469 | cairo_surface_destroy (mask_surface); |
||
1470 | |||
1471 | return status; |
||
1472 | } |
||
1473 | } |
||
1474 | |||
1475 | static cairo_int_status_t |
||
1476 | _cairo_win32_scaled_font_load_truetype_table (void *abstract_font, |
||
1477 | unsigned long tag, |
||
1478 | long offset, |
||
1479 | unsigned char *buffer, |
||
1480 | unsigned long *length) |
||
1481 | { |
||
1482 | cairo_win32_scaled_font_t *scaled_font = abstract_font; |
||
1483 | HDC hdc; |
||
1484 | cairo_status_t status; |
||
1485 | |||
1486 | hdc = _get_global_font_dc (); |
||
1487 | assert (hdc != NULL); |
||
1488 | |||
1489 | tag = (tag&0x000000ff)<<24 | (tag&0x0000ff00)<<8 | (tag&0x00ff0000)>>8 | (tag&0xff000000)>>24; |
||
1490 | status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc); |
||
1491 | if (status) |
||
1492 | return status; |
||
1493 | |||
1494 | *length = GetFontData (hdc, tag, offset, buffer, *length); |
||
1495 | if (*length == GDI_ERROR) |
||
1496 | status = CAIRO_INT_STATUS_UNSUPPORTED; |
||
1497 | |||
1498 | cairo_win32_scaled_font_done_font (&scaled_font->base); |
||
1499 | |||
1500 | return status; |
||
1501 | } |
||
1502 | |||
1503 | static cairo_int_status_t |
||
1504 | _cairo_win32_scaled_font_index_to_ucs4 (void *abstract_font, |
||
1505 | unsigned long index, |
||
1506 | uint32_t *ucs4) |
||
1507 | { |
||
1508 | cairo_win32_scaled_font_t *scaled_font = abstract_font; |
||
1509 | GLYPHSET *glyph_set; |
||
1510 | uint16_t *utf16 = NULL; |
||
1511 | WORD *glyph_indices = NULL; |
||
1512 | HDC hdc = NULL; |
||
1513 | int res; |
||
1514 | unsigned int i, j, num_glyphs; |
||
1515 | cairo_status_t status; |
||
1516 | |||
1517 | hdc = _get_global_font_dc (); |
||
1518 | assert (hdc != NULL); |
||
1519 | |||
1520 | status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc); |
||
1521 | if (status) |
||
1522 | return status; |
||
1523 | |||
1524 | res = GetFontUnicodeRanges(hdc, NULL); |
||
1525 | if (res == 0) { |
||
1526 | status = _cairo_win32_print_gdi_error ( |
||
1527 | "_cairo_win32_scaled_font_index_to_ucs4:GetFontUnicodeRanges"); |
||
1528 | goto exit1; |
||
1529 | } |
||
1530 | |||
1531 | glyph_set = malloc (res); |
||
1532 | if (glyph_set == NULL) { |
||
1533 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
||
1534 | goto exit1; |
||
1535 | } |
||
1536 | |||
1537 | res = GetFontUnicodeRanges(hdc, glyph_set); |
||
1538 | if (res == 0) { |
||
1539 | status = _cairo_win32_print_gdi_error ( |
||
1540 | "_cairo_win32_scaled_font_index_to_ucs4:GetFontUnicodeRanges"); |
||
1541 | goto exit1; |
||
1542 | } |
||
1543 | |||
1544 | *ucs4 = (uint32_t) -1; |
||
1545 | for (i = 0; i < glyph_set->cRanges; i++) { |
||
1546 | num_glyphs = glyph_set->ranges[i].cGlyphs; |
||
1547 | |||
1548 | utf16 = _cairo_malloc_ab (num_glyphs + 1, sizeof (uint16_t)); |
||
1549 | if (utf16 == NULL) { |
||
1550 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
||
1551 | goto exit1; |
||
1552 | } |
||
1553 | |||
1554 | glyph_indices = _cairo_malloc_ab (num_glyphs + 1, sizeof (WORD)); |
||
1555 | if (glyph_indices == NULL) { |
||
1556 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
||
1557 | goto exit2; |
||
1558 | } |
||
1559 | |||
1560 | for (j = 0; j < num_glyphs; j++) |
||
1561 | utf16[j] = glyph_set->ranges[i].wcLow + j; |
||
1562 | utf16[j] = 0; |
||
1563 | |||
1564 | if (GetGlyphIndicesW (hdc, utf16, num_glyphs, glyph_indices, 0) == GDI_ERROR) { |
||
1565 | status = _cairo_win32_print_gdi_error ( |
||
1566 | "_cairo_win32_scaled_font_index_to_ucs4:GetGlyphIndicesW"); |
||
1567 | goto exit2; |
||
1568 | } |
||
1569 | |||
1570 | for (j = 0; j < num_glyphs; j++) { |
||
1571 | if (glyph_indices[j] == index) { |
||
1572 | *ucs4 = utf16[j]; |
||
1573 | goto exit2; |
||
1574 | } |
||
1575 | } |
||
1576 | |||
1577 | free (glyph_indices); |
||
1578 | glyph_indices = NULL; |
||
1579 | free (utf16); |
||
1580 | utf16 = NULL; |
||
1581 | } |
||
1582 | |||
1583 | exit2: |
||
1584 | if (glyph_indices) |
||
1585 | free (glyph_indices); |
||
1586 | if (utf16) |
||
1587 | free (utf16); |
||
1588 | free (glyph_set); |
||
1589 | exit1: |
||
1590 | cairo_win32_scaled_font_done_font (&scaled_font->base); |
||
1591 | |||
1592 | return status; |
||
1593 | } |
||
1594 | |||
1595 | static cairo_status_t |
||
1596 | _cairo_win32_scaled_font_init_glyph_surface (cairo_win32_scaled_font_t *scaled_font, |
||
1597 | cairo_scaled_glyph_t *scaled_glyph) |
||
1598 | { |
||
1599 | cairo_status_t status; |
||
1600 | cairo_glyph_t glyph; |
||
1601 | cairo_win32_surface_t *surface; |
||
1602 | cairo_t *cr; |
||
1603 | cairo_surface_t *image; |
||
1604 | int width, height; |
||
1605 | int x1, y1, x2, y2; |
||
1606 | |||
1607 | x1 = _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.x); |
||
1608 | y1 = _cairo_fixed_integer_floor (scaled_glyph->bbox.p1.y); |
||
1609 | x2 = _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.x); |
||
1610 | y2 = _cairo_fixed_integer_ceil (scaled_glyph->bbox.p2.y); |
||
1611 | width = x2 - x1; |
||
1612 | height = y2 - y1; |
||
1613 | |||
1614 | surface = (cairo_win32_surface_t *) |
||
1615 | cairo_win32_surface_create_with_dib (CAIRO_FORMAT_RGB24, width, height); |
||
1616 | |||
1617 | cr = cairo_create (&surface->base); |
||
1618 | cairo_set_source_rgb (cr, 1, 1, 1); |
||
1619 | cairo_paint (cr); |
||
1620 | status = cairo_status (cr); |
||
1621 | cairo_destroy(cr); |
||
1622 | if (status) |
||
1623 | goto FAIL; |
||
1624 | |||
1625 | glyph.index = _cairo_scaled_glyph_index (scaled_glyph); |
||
1626 | glyph.x = -x1; |
||
1627 | glyph.y = -y1; |
||
1628 | status = _draw_glyphs_on_surface (surface, scaled_font, RGB(0,0,0), |
||
1629 | 0, 0, &glyph, 1); |
||
1630 | if (status) |
||
1631 | goto FAIL; |
||
1632 | |||
1633 | GdiFlush(); |
||
1634 | |||
1635 | image = _compute_a8_mask (surface); |
||
1636 | status = image->status; |
||
1637 | if (status) |
||
1638 | goto FAIL; |
||
1639 | |||
1640 | cairo_surface_set_device_offset (image, -x1, -y1); |
||
1641 | _cairo_scaled_glyph_set_surface (scaled_glyph, |
||
1642 | &scaled_font->base, |
||
1643 | (cairo_image_surface_t *) image); |
||
1644 | |||
1645 | FAIL: |
||
1646 | cairo_surface_destroy (&surface->base); |
||
1647 | |||
1648 | return status; |
||
1649 | } |
||
1650 | |||
1651 | static void |
||
1652 | _cairo_win32_transform_FIXED_to_fixed (cairo_matrix_t *matrix, |
||
1653 | FIXED Fx, FIXED Fy, |
||
1654 | cairo_fixed_t *fx, cairo_fixed_t *fy) |
||
1655 | { |
||
1656 | double x = Fx.value + Fx.fract / 65536.0; |
||
1657 | double y = Fy.value + Fy.fract / 65536.0; |
||
1658 | cairo_matrix_transform_point (matrix, &x, &y); |
||
1659 | *fx = _cairo_fixed_from_double (x); |
||
1660 | *fy = _cairo_fixed_from_double (y); |
||
1661 | } |
||
1662 | |||
1663 | static cairo_status_t |
||
1664 | _cairo_win32_scaled_font_init_glyph_path (cairo_win32_scaled_font_t *scaled_font, |
||
1665 | cairo_scaled_glyph_t *scaled_glyph) |
||
1666 | { |
||
1667 | static const MAT2 matrix = { { 0, 1 }, { 0, 0 }, { 0, 0 }, { 0, -1 } }; |
||
1668 | cairo_status_t status; |
||
1669 | GLYPHMETRICS metrics; |
||
1670 | HDC hdc; |
||
1671 | DWORD bytesGlyph; |
||
1672 | unsigned char *buffer, *ptr; |
||
1673 | cairo_path_fixed_t *path; |
||
1674 | cairo_matrix_t transform; |
||
1675 | cairo_fixed_t x, y; |
||
1676 | |||
1677 | if (scaled_font->is_bitmap) |
||
1678 | return CAIRO_INT_STATUS_UNSUPPORTED; |
||
1679 | |||
1680 | hdc = _get_global_font_dc (); |
||
1681 | assert (hdc != NULL); |
||
1682 | |||
1683 | path = _cairo_path_fixed_create (); |
||
1684 | if (!path) |
||
1685 | return _cairo_error (CAIRO_STATUS_NO_MEMORY); |
||
1686 | |||
1687 | if (scaled_font->base.options.hint_style == CAIRO_HINT_STYLE_NONE) { |
||
1688 | status = _cairo_win32_scaled_font_select_unscaled_font (&scaled_font->base, hdc); |
||
1689 | transform = scaled_font->base.scale; |
||
1690 | cairo_matrix_scale (&transform, 1.0/scaled_font->em_square, 1.0/scaled_font->em_square); |
||
1691 | } else { |
||
1692 | status = cairo_win32_scaled_font_select_font (&scaled_font->base, hdc); |
||
1693 | cairo_matrix_init_identity(&transform); |
||
1694 | } |
||
1695 | if (status) |
||
1696 | goto CLEANUP_PATH; |
||
1697 | |||
1698 | bytesGlyph = GetGlyphOutlineW (hdc, _cairo_scaled_glyph_index (scaled_glyph), |
||
1699 | GGO_NATIVE | GGO_GLYPH_INDEX, |
||
1700 | &metrics, 0, NULL, &matrix); |
||
1701 | |||
1702 | if (bytesGlyph == GDI_ERROR) { |
||
1703 | status = _cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_glyph_path"); |
||
1704 | goto CLEANUP_FONT; |
||
1705 | } |
||
1706 | |||
1707 | ptr = buffer = malloc (bytesGlyph); |
||
1708 | if (!buffer) { |
||
1709 | status = _cairo_error (CAIRO_STATUS_NO_MEMORY); |
||
1710 | goto CLEANUP_FONT; |
||
1711 | } |
||
1712 | |||
1713 | if (GetGlyphOutlineW (hdc, _cairo_scaled_glyph_index (scaled_glyph), |
||
1714 | GGO_NATIVE | GGO_GLYPH_INDEX, |
||
1715 | &metrics, bytesGlyph, buffer, &matrix) == GDI_ERROR) { |
||
1716 | status = _cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_glyph_path"); |
||
1717 | goto CLEANUP_BUFFER; |
||
1718 | } |
||
1719 | |||
1720 | while (ptr < buffer + bytesGlyph) { |
||
1721 | TTPOLYGONHEADER *header = (TTPOLYGONHEADER *)ptr; |
||
1722 | unsigned char *endPoly = ptr + header->cb; |
||
1723 | |||
1724 | ptr += sizeof (TTPOLYGONHEADER); |
||
1725 | |||
1726 | _cairo_win32_transform_FIXED_to_fixed (&transform, |
||
1727 | header->pfxStart.x, |
||
1728 | header->pfxStart.y, |
||
1729 | &x, &y); |
||
1730 | status = _cairo_path_fixed_move_to (path, x, y); |
||
1731 | if (status) |
||
1732 | goto CLEANUP_BUFFER; |
||
1733 | |||
1734 | while (ptr < endPoly) { |
||
1735 | TTPOLYCURVE *curve = (TTPOLYCURVE *)ptr; |
||
1736 | POINTFX *points = curve->apfx; |
||
1737 | int i; |
||
1738 | switch (curve->wType) { |
||
1739 | case TT_PRIM_LINE: |
||
1740 | for (i = 0; i < curve->cpfx; i++) { |
||
1741 | _cairo_win32_transform_FIXED_to_fixed (&transform, |
||
1742 | points[i].x, |
||
1743 | points[i].y, |
||
1744 | &x, &y); |
||
1745 | status = _cairo_path_fixed_line_to (path, x, y); |
||
1746 | if (status) |
||
1747 | goto CLEANUP_BUFFER; |
||
1748 | } |
||
1749 | break; |
||
1750 | case TT_PRIM_QSPLINE: |
||
1751 | for (i = 0; i < curve->cpfx - 1; i++) { |
||
1752 | cairo_fixed_t p1x, p1y, p2x, p2y, cx, cy, c1x, c1y, c2x, c2y; |
||
1753 | if (! _cairo_path_fixed_get_current_point (path, &p1x, &p1y)) |
||
1754 | goto CLEANUP_BUFFER; |
||
1755 | _cairo_win32_transform_FIXED_to_fixed (&transform, |
||
1756 | points[i].x, |
||
1757 | points[i].y, |
||
1758 | &cx, &cy); |
||
1759 | |||
1760 | if (i + 1 == curve->cpfx - 1) { |
||
1761 | _cairo_win32_transform_FIXED_to_fixed (&transform, |
||
1762 | points[i + 1].x, |
||
1763 | points[i + 1].y, |
||
1764 | &p2x, &p2y); |
||
1765 | } else { |
||
1766 | /* records with more than one curve use interpolation for |
||
1767 | control points, per http://support.microsoft.com/kb/q87115/ */ |
||
1768 | _cairo_win32_transform_FIXED_to_fixed (&transform, |
||
1769 | points[i + 1].x, |
||
1770 | points[i + 1].y, |
||
1771 | &x, &y); |
||
1772 | p2x = (cx + x) / 2; |
||
1773 | p2y = (cy + y) / 2; |
||
1774 | } |
||
1775 | |||
1776 | c1x = 2 * cx / 3 + p1x / 3; |
||
1777 | c1y = 2 * cy / 3 + p1y / 3; |
||
1778 | c2x = 2 * cx / 3 + p2x / 3; |
||
1779 | c2y = 2 * cy / 3 + p2y / 3; |
||
1780 | |||
1781 | status = _cairo_path_fixed_curve_to (path, c1x, c1y, c2x, c2y, p2x, p2y); |
||
1782 | if (status) |
||
1783 | goto CLEANUP_BUFFER; |
||
1784 | } |
||
1785 | break; |
||
1786 | case TT_PRIM_CSPLINE: |
||
1787 | for (i = 0; i < curve->cpfx - 2; i += 2) { |
||
1788 | cairo_fixed_t x1, y1, x2, y2; |
||
1789 | _cairo_win32_transform_FIXED_to_fixed (&transform, |
||
1790 | points[i].x, |
||
1791 | points[i].y, |
||
1792 | &x, &y); |
||
1793 | _cairo_win32_transform_FIXED_to_fixed (&transform, |
||
1794 | points[i + 1].x, |
||
1795 | points[i + 1].y, |
||
1796 | &x1, &y1); |
||
1797 | _cairo_win32_transform_FIXED_to_fixed (&transform, |
||
1798 | points[i + 2].x, |
||
1799 | points[i + 2].y, |
||
1800 | &x2, &y2); |
||
1801 | status = _cairo_path_fixed_curve_to (path, x, y, x1, y1, x2, y2); |
||
1802 | if (status) |
||
1803 | goto CLEANUP_BUFFER; |
||
1804 | } |
||
1805 | break; |
||
1806 | } |
||
1807 | ptr += sizeof(TTPOLYCURVE) + sizeof (POINTFX) * (curve->cpfx - 1); |
||
1808 | } |
||
1809 | status = _cairo_path_fixed_close_path (path); |
||
1810 | if (status) |
||
1811 | goto CLEANUP_BUFFER; |
||
1812 | } |
||
1813 | |||
1814 | _cairo_scaled_glyph_set_path (scaled_glyph, |
||
1815 | &scaled_font->base, |
||
1816 | path); |
||
1817 | |||
1818 | CLEANUP_BUFFER: |
||
1819 | free (buffer); |
||
1820 | |||
1821 | CLEANUP_FONT: |
||
1822 | if (scaled_font->base.options.hint_style == CAIRO_HINT_STYLE_NONE) |
||
1823 | _cairo_win32_scaled_font_done_unscaled_font (&scaled_font->base); |
||
1824 | else |
||
1825 | cairo_win32_scaled_font_done_font (&scaled_font->base); |
||
1826 | |||
1827 | CLEANUP_PATH: |
||
1828 | if (status != CAIRO_STATUS_SUCCESS) |
||
1829 | _cairo_path_fixed_destroy (path); |
||
1830 | |||
1831 | return status; |
||
1832 | } |
||
1833 | |||
1834 | const cairo_scaled_font_backend_t _cairo_win32_scaled_font_backend = { |
||
1835 | CAIRO_FONT_TYPE_WIN32, |
||
1836 | _cairo_win32_scaled_font_fini, |
||
1837 | _cairo_win32_scaled_font_glyph_init, |
||
1838 | NULL, /* _cairo_win32_scaled_font_text_to_glyphs, FIXME */ |
||
1839 | _cairo_win32_scaled_font_ucs4_to_index, |
||
1840 | _cairo_win32_scaled_font_show_glyphs, |
||
1841 | _cairo_win32_scaled_font_load_truetype_table, |
||
1842 | _cairo_win32_scaled_font_index_to_ucs4, |
||
1843 | }; |
||
1844 | |||
1845 | /* #cairo_win32_font_face_t */ |
||
1846 | |||
1847 | typedef struct _cairo_win32_font_face cairo_win32_font_face_t; |
||
1848 | |||
1849 | /* If hfont is non-%NULL then logfont->lfHeight must be -S for some S, |
||
1850 | * logfont->lfWidth, logfont->lfEscapement, logfont->lfOrientation must |
||
1851 | * all be 0, and hfont is the result of calling CreateFontIndirectW on |
||
1852 | * logfont. |
||
1853 | */ |
||
1854 | struct _cairo_win32_font_face { |
||
1855 | cairo_font_face_t base; |
||
1856 | LOGFONTW logfont; |
||
1857 | HFONT hfont; |
||
1858 | }; |
||
1859 | |||
1860 | /* implement the platform-specific interface */ |
||
1861 | |||
1862 | static void |
||
1863 | _cairo_win32_font_face_destroy (void *abstract_face) |
||
1864 | { |
||
1865 | } |
||
1866 | |||
1867 | static cairo_bool_t |
||
1868 | _is_scale (const cairo_matrix_t *matrix, double scale) |
||
1869 | { |
||
1870 | return matrix->xx == scale && matrix->yy == scale && |
||
1871 | matrix->xy == 0. && matrix->yx == 0. && |
||
1872 | matrix->x0 == 0. && matrix->y0 == 0.; |
||
1873 | } |
||
1874 | |||
1875 | static cairo_status_t |
||
1876 | _cairo_win32_font_face_scaled_font_create (void *abstract_face, |
||
1877 | const cairo_matrix_t *font_matrix, |
||
1878 | const cairo_matrix_t *ctm, |
||
1879 | const cairo_font_options_t *options, |
||
1880 | cairo_scaled_font_t **font) |
||
1881 | { |
||
1882 | HFONT hfont = NULL; |
||
1883 | |||
1884 | cairo_win32_font_face_t *font_face = abstract_face; |
||
1885 | |||
1886 | if (font_face->hfont) { |
||
1887 | /* Check whether it's OK to go ahead and use the font-face's HFONT. */ |
||
1888 | if (_is_scale (ctm, 1.) && |
||
1889 | _is_scale (font_matrix, -font_face->logfont.lfHeight)) { |
||
1890 | hfont = font_face->hfont; |
||
1891 | } |
||
1892 | } |
||
1893 | |||
1894 | return _win32_scaled_font_create (&font_face->logfont, |
||
1895 | hfont, |
||
1896 | &font_face->base, |
||
1897 | font_matrix, ctm, options, |
||
1898 | font); |
||
1899 | } |
||
1900 | |||
1901 | const cairo_font_face_backend_t _cairo_win32_font_face_backend = { |
||
1902 | CAIRO_FONT_TYPE_WIN32, |
||
1903 | _cairo_win32_font_face_create_for_toy, |
||
1904 | _cairo_win32_font_face_destroy, |
||
1905 | _cairo_win32_font_face_scaled_font_create |
||
1906 | }; |
||
1907 | |||
1908 | /** |
||
1909 | * cairo_win32_font_face_create_for_logfontw_hfont: |
||
1910 | * @logfont: A #LOGFONTW structure specifying the font to use. |
||
1911 | * If @font is %NULL then the lfHeight, lfWidth, lfOrientation and lfEscapement |
||
1912 | * fields of this structure are ignored. Otherwise lfWidth, lfOrientation and |
||
1913 | * lfEscapement must be zero. |
||
1914 | * @font: An #HFONT that can be used when the font matrix is a scale by |
||
1915 | * -lfHeight and the CTM is identity. |
||
1916 | * |
||
1917 | * Creates a new font for the Win32 font backend based on a |
||
1918 | * #LOGFONT. This font can then be used with |
||
1919 | * cairo_set_font_face() or cairo_scaled_font_create(). |
||
1920 | * The #cairo_scaled_font_t |
||
1921 | * returned from cairo_scaled_font_create() is also for the Win32 backend |
||
1922 | * and can be used with functions such as cairo_win32_scaled_font_select_font(). |
||
1923 | * |
||
1924 | * Return value: a newly created #cairo_font_face_t. Free with |
||
1925 | * cairo_font_face_destroy() when you are done using it. |
||
1926 | **/ |
||
1927 | cairo_font_face_t * |
||
1928 | cairo_win32_font_face_create_for_logfontw_hfont (LOGFONTW *logfont, HFONT font) |
||
1929 | { |
||
1930 | cairo_win32_font_face_t *font_face; |
||
1931 | |||
1932 | font_face = malloc (sizeof (cairo_win32_font_face_t)); |
||
1933 | if (!font_face) { |
||
1934 | _cairo_error_throw (CAIRO_STATUS_NO_MEMORY); |
||
1935 | return (cairo_font_face_t *)&_cairo_font_face_nil; |
||
1936 | } |
||
1937 | |||
1938 | font_face->logfont = *logfont; |
||
1939 | font_face->hfont = font; |
||
1940 | |||
1941 | _cairo_font_face_init (&font_face->base, &_cairo_win32_font_face_backend); |
||
1942 | |||
1943 | return &font_face->base; |
||
1944 | } |
||
1945 | |||
1946 | /** |
||
1947 | * cairo_win32_font_face_create_for_logfontw: |
||
1948 | * @logfont: A #LOGFONTW structure specifying the font to use. |
||
1949 | * The lfHeight, lfWidth, lfOrientation and lfEscapement |
||
1950 | * fields of this structure are ignored. |
||
1951 | * |
||
1952 | * Creates a new font for the Win32 font backend based on a |
||
1953 | * #LOGFONT. This font can then be used with |
||
1954 | * cairo_set_font_face() or cairo_scaled_font_create(). |
||
1955 | * The #cairo_scaled_font_t |
||
1956 | * returned from cairo_scaled_font_create() is also for the Win32 backend |
||
1957 | * and can be used with functions such as cairo_win32_scaled_font_select_font(). |
||
1958 | * |
||
1959 | * Return value: a newly created #cairo_font_face_t. Free with |
||
1960 | * cairo_font_face_destroy() when you are done using it. |
||
1961 | **/ |
||
1962 | cairo_font_face_t * |
||
1963 | cairo_win32_font_face_create_for_logfontw (LOGFONTW *logfont) |
||
1964 | { |
||
1965 | return cairo_win32_font_face_create_for_logfontw_hfont (logfont, NULL); |
||
1966 | } |
||
1967 | |||
1968 | /** |
||
1969 | * cairo_win32_font_face_create_for_hfont: |
||
1970 | * @font: An #HFONT structure specifying the font to use. |
||
1971 | * |
||
1972 | * Creates a new font for the Win32 font backend based on a |
||
1973 | * #HFONT. This font can then be used with |
||
1974 | * cairo_set_font_face() or cairo_scaled_font_create(). |
||
1975 | * The #cairo_scaled_font_t |
||
1976 | * returned from cairo_scaled_font_create() is also for the Win32 backend |
||
1977 | * and can be used with functions such as cairo_win32_scaled_font_select_font(). |
||
1978 | * |
||
1979 | * Return value: a newly created #cairo_font_face_t. Free with |
||
1980 | * cairo_font_face_destroy() when you are done using it. |
||
1981 | **/ |
||
1982 | cairo_font_face_t * |
||
1983 | cairo_win32_font_face_create_for_hfont (HFONT font) |
||
1984 | { |
||
1985 | LOGFONTW logfont; |
||
1986 | GetObjectW (font, sizeof(logfont), &logfont); |
||
1987 | |||
1988 | if (logfont.lfEscapement != 0 || logfont.lfOrientation != 0 || |
||
1989 | logfont.lfWidth != 0) { |
||
1990 | /* We can't use this font because that optimization requires that |
||
1991 | * lfEscapement, lfOrientation and lfWidth be zero. */ |
||
1992 | font = NULL; |
||
1993 | } |
||
1994 | |||
1995 | return cairo_win32_font_face_create_for_logfontw_hfont (&logfont, font); |
||
1996 | } |
||
1997 | |||
1998 | static cairo_bool_t |
||
1999 | _cairo_scaled_font_is_win32 (cairo_scaled_font_t *scaled_font) |
||
2000 | { |
||
2001 | return scaled_font->backend == &_cairo_win32_scaled_font_backend; |
||
2002 | } |
||
2003 | |||
2004 | /** |
||
2005 | * cairo_win32_scaled_font_select_font: |
||
2006 | * @scaled_font: A #cairo_scaled_font_t from the Win32 font backend. Such an |
||
2007 | * object can be created with cairo_win32_scaled_font_create_for_logfontw(). |
||
2008 | * @hdc: a device context |
||
2009 | * |
||
2010 | * Selects the font into the given device context and changes the |
||
2011 | * map mode and world transformation of the device context to match |
||
2012 | * that of the font. This function is intended for use when using |
||
2013 | * layout APIs such as Uniscribe to do text layout with the |
||
2014 | * cairo font. After finishing using the device context, you must call |
||
2015 | * cairo_win32_scaled_font_done_font() to release any resources allocated |
||
2016 | * by this function. |
||
2017 | * |
||
2018 | * See cairo_win32_scaled_font_get_metrics_factor() for converting logical |
||
2019 | * coordinates from the device context to font space. |
||
2020 | * |
||
2021 | * Normally, calls to SaveDC() and RestoreDC() would be made around |
||
2022 | * the use of this function to preserve the original graphics state. |
||
2023 | * |
||
2024 | * Return value: %CAIRO_STATUS_SUCCESS if the operation succeeded. |
||
2025 | * otherwise an error such as %CAIRO_STATUS_NO_MEMORY and |
||
2026 | * the device context is unchanged. |
||
2027 | **/ |
||
2028 | cairo_status_t |
||
2029 | cairo_win32_scaled_font_select_font (cairo_scaled_font_t *scaled_font, |
||
2030 | HDC hdc) |
||
2031 | { |
||
2032 | cairo_status_t status; |
||
2033 | HFONT hfont; |
||
2034 | HFONT old_hfont = NULL; |
||
2035 | int old_mode; |
||
2036 | |||
2037 | if (! _cairo_scaled_font_is_win32 (scaled_font)) { |
||
2038 | return _cairo_error (CAIRO_STATUS_FONT_TYPE_MISMATCH); |
||
2039 | } |
||
2040 | |||
2041 | if (scaled_font->status) |
||
2042 | return scaled_font->status; |
||
2043 | |||
2044 | status = _win32_scaled_font_get_scaled_hfont ((cairo_win32_scaled_font_t *)scaled_font, &hfont); |
||
2045 | if (status) |
||
2046 | return status; |
||
2047 | |||
2048 | old_hfont = SelectObject (hdc, hfont); |
||
2049 | if (!old_hfont) |
||
2050 | return _cairo_win32_print_gdi_error ("cairo_win32_scaled_font_select_font:SelectObject"); |
||
2051 | |||
2052 | old_mode = SetGraphicsMode (hdc, GM_ADVANCED); |
||
2053 | if (!old_mode) { |
||
2054 | status = _cairo_win32_print_gdi_error ("cairo_win32_scaled_font_select_font:SetGraphicsMode"); |
||
2055 | SelectObject (hdc, old_hfont); |
||
2056 | return status; |
||
2057 | } |
||
2058 | |||
2059 | status = _win32_scaled_font_set_world_transform ((cairo_win32_scaled_font_t *)scaled_font, hdc); |
||
2060 | if (status) { |
||
2061 | SetGraphicsMode (hdc, old_mode); |
||
2062 | SelectObject (hdc, old_hfont); |
||
2063 | return status; |
||
2064 | } |
||
2065 | |||
2066 | SetMapMode (hdc, MM_TEXT); |
||
2067 | |||
2068 | return CAIRO_STATUS_SUCCESS; |
||
2069 | } |
||
2070 | |||
2071 | /** |
||
2072 | * cairo_win32_scaled_font_done_font: |
||
2073 | * @scaled_font: A scaled font from the Win32 font backend. |
||
2074 | * |
||
2075 | * Releases any resources allocated by cairo_win32_scaled_font_select_font() |
||
2076 | **/ |
||
2077 | void |
||
2078 | cairo_win32_scaled_font_done_font (cairo_scaled_font_t *scaled_font) |
||
2079 | { |
||
2080 | if (! _cairo_scaled_font_is_win32 (scaled_font)) { |
||
2081 | _cairo_error_throw (CAIRO_STATUS_FONT_TYPE_MISMATCH); |
||
2082 | } |
||
2083 | } |
||
2084 | |||
2085 | /** |
||
2086 | * cairo_win32_scaled_font_get_metrics_factor: |
||
2087 | * @scaled_font: a scaled font from the Win32 font backend |
||
2088 | * |
||
2089 | * Gets a scale factor between logical coordinates in the coordinate |
||
2090 | * space used by cairo_win32_scaled_font_select_font() (that is, the |
||
2091 | * coordinate system used by the Windows functions to return metrics) and |
||
2092 | * font space coordinates. |
||
2093 | * |
||
2094 | * Return value: factor to multiply logical units by to get font space |
||
2095 | * coordinates. |
||
2096 | **/ |
||
2097 | double |
||
2098 | cairo_win32_scaled_font_get_metrics_factor (cairo_scaled_font_t *scaled_font) |
||
2099 | { |
||
2100 | if (! _cairo_scaled_font_is_win32 (scaled_font)) { |
||
2101 | _cairo_error_throw (CAIRO_STATUS_FONT_TYPE_MISMATCH); |
||
2102 | return 1.; |
||
2103 | } |
||
2104 | return 1. / ((cairo_win32_scaled_font_t *)scaled_font)->logical_scale; |
||
2105 | } |
||
2106 | |||
2107 | /** |
||
2108 | * cairo_win32_scaled_font_get_logical_to_device: |
||
2109 | * @scaled_font: a scaled font from the Win32 font backend |
||
2110 | * @logical_to_device: matrix to return |
||
2111 | * |
||
2112 | * Gets the transformation mapping the logical space used by @scaled_font |
||
2113 | * to device space. |
||
2114 | * |
||
2115 | * Since: 1.4 |
||
2116 | **/ |
||
2117 | void |
||
2118 | cairo_win32_scaled_font_get_logical_to_device (cairo_scaled_font_t *scaled_font, |
||
2119 | cairo_matrix_t *logical_to_device) |
||
2120 | { |
||
2121 | cairo_win32_scaled_font_t *win_font = (cairo_win32_scaled_font_t *)scaled_font; |
||
2122 | if (! _cairo_scaled_font_is_win32 (scaled_font)) { |
||
2123 | _cairo_error_throw (CAIRO_STATUS_FONT_TYPE_MISMATCH); |
||
2124 | cairo_matrix_init_identity (logical_to_device); |
||
2125 | return; |
||
2126 | } |
||
2127 | *logical_to_device = win_font->logical_to_device; |
||
2128 | } |
||
2129 | |||
2130 | /** |
||
2131 | * cairo_win32_scaled_font_get_device_to_logical: |
||
2132 | * @scaled_font: a scaled font from the Win32 font backend |
||
2133 | * @device_to_logical: matrix to return |
||
2134 | * |
||
2135 | * Gets the transformation mapping device space to the logical space |
||
2136 | * used by @scaled_font. |
||
2137 | * |
||
2138 | * Since: 1.4 |
||
2139 | **/ |
||
2140 | void |
||
2141 | cairo_win32_scaled_font_get_device_to_logical (cairo_scaled_font_t *scaled_font, |
||
2142 | cairo_matrix_t *device_to_logical) |
||
2143 | { |
||
2144 | cairo_win32_scaled_font_t *win_font = (cairo_win32_scaled_font_t *)scaled_font; |
||
2145 | if (! _cairo_scaled_font_is_win32 (scaled_font)) { |
||
2146 | _cairo_error_throw (CAIRO_STATUS_FONT_TYPE_MISMATCH); |
||
2147 | cairo_matrix_init_identity (device_to_logical); |
||
2148 | return; |
||
2149 | } |
||
2150 | *device_to_logical = win_font->device_to_logical; |
||
2151 | } |