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/*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "canvasgesture_resize.h"
#include <QMouseEvent>
#include <QPainter>
#include <QPen>
#include <QRubberBand>
#include "scribusdoc.h"
#include "scribusview.h"
#include "selection.h"
#include "undomanager.h"
ResizeGesture::ResizeGesture (CanvasMode* parent) : CanvasGesture(parent)
{
m_transactionStarted = NULL;
}
void ResizeGesture::prepare(Canvas::FrameHandle framehandle)
{
if (framehandle > 0)
m_handle = framehandle;
if (m_doc->m_Selection->count() == 0)
{
m_handle = Canvas::OUTSIDE;
return;
}
else if (m_doc->m_Selection->isMultipleSelection())
{
double ex, ey, eh, ew;
m_doc->m_Selection->getGroupRect(&ex, &ey, &ew, &eh);
double gx, gy, gh, gw;
m_doc->m_Selection->getVisualGroupRect(&gx, &gy, &gw, &gh);
m_bounds = QRectF(QPointF(gx,gy), QSizeF(gw, gh));
m_rotation = 0.0;
m_extraX = ex - gx;
m_extraY = ey - gy;
m_extraWidth = gw - ew;
m_extraHeight = gh - eh;
}
else // we keep m_bounds non-rotated
{
PageItem* currItem = m_doc->m_Selection->itemAt(0);
m_bounds = QRectF(currItem->visualXPos(), currItem->visualYPos(), currItem->visualWidth(), currItem->visualHeight());
m_rotation = currItem->rotation();
// currItem->OldB2 = currItem->visualWidth();
// currItem->OldH2 = currItem->visualHeight();
currItem->OldB2 = currItem->width();
currItem->OldH2 = currItem->height();
m_extraWidth = currItem->visualWidth() - currItem->width();
m_extraHeight = currItem->visualHeight() - currItem->height();
m_extraX = m_extraY = m_extraWidth / 2.0;
}
m_origRatio = m_bounds.width() / m_bounds.height();
m_origBounds = m_bounds;
// qDebug()<<"P"<<m_bounds<< "E"<< m_extraX<< m_extraY<<m_extraWidth<<m_extraHeight;
}
void ResizeGesture::clear()
{
m_handle = Canvas::OUTSIDE;
if (m_transactionStarted)
{
// qDebug() << "ResizeGesture::clear: cancel transaction" << m_transactionStarted;
m_transactionStarted->cancel();
delete m_transactionStarted;
m_transactionStarted = NULL;
}
}
void ResizeGesture::activate(bool flag)
{
// qDebug() << "ResizeGesture::activate" << flag;
}
void ResizeGesture::deactivate(bool forgesture)
{
// qDebug() << "ResizeGesture::deactivate" << forgesture;
if (!forgesture)
clear();
}
void ResizeGesture::drawControls(QPainter* p)
{
QColor drawColor = qApp->palette().color(QPalette::Active, QPalette::Highlight);
QRect localRect = m_canvas->canvasToLocal(m_bounds);
p->save();
// p->setPen(QPen(Qt::black, 1, Qt::DashLine, Qt::FlatCap, Qt::MiterJoin));
// p->drawRect(localRect);
if (m_rotation != 0)
{
p->setRenderHint(QPainter::Antialiasing);
p->translate(localRect.x(), localRect.y());
p->rotate(m_rotation);
p->translate(-localRect.x(), -localRect.y());
}
p->setPen(QPen(drawColor, 1, Qt::SolidLine, Qt::FlatCap, Qt::MiterJoin));
drawColor.setAlpha(64);
p->setBrush(drawColor);
p->drawRect(localRect);
// p->setPen(Qt::darkMagenta);
// p->drawLine(localRect.topLeft(), localRect.bottomRight());
p->restore();
if (m_origBounds != m_bounds)
{
p->save();
// p->translate(m_bounds.topLeft() - m_origBounds.topLeft());
drawOutline(p, qAbs(m_bounds.width()) / qMax(qAbs(m_origBounds.width()), static_cast<qreal>(1.0)),
qAbs(m_bounds.height()) / qMax(qAbs(m_origBounds.height()), static_cast<qreal>(1.0)),
m_bounds.left() - m_origBounds.left(),
m_bounds.top() - m_origBounds.top());
p->restore();
}
}
void ResizeGesture::mouseReleaseEvent(QMouseEvent *m)
{
adjustBounds(m);
if (m_doc->m_Selection->count() != 0)
{
PageItem* currItem = m_doc->m_Selection->itemAt(0);
// qDebug() << "ResizeGesture::release: new bounds" << m_bounds;
if (m_bounds != m_mousePressBounds)
{
doResize(m->modifiers() & Qt::AltModifier);
m_doc->setRedrawBounding(currItem);
if (currItem->asImageFrame())
currItem->AdjustPictScale();
}
m_view->resetMousePressed();
// necessary since mousebutton is still recorded pressed, and otherwise checkchanges() will do nothing
// we must check changes on whole selection otherwise resize operation won't undo correctly on groups
if (m_bounds != m_mousePressBounds)
{
for (int i = 0; i < m_doc->m_Selection->count(); ++i)
m_doc->m_Selection->itemAt(i)->checkChanges();
m_doc->invalidateRegion(m_mousePressBounds.unite(m_bounds));
m_doc->regionsChanged()->update(m_mousePressBounds.unite(m_bounds));
}
}
// qDebug() << "ResizeGesture::release: transaction" << m_transactionStarted;
if (m_transactionStarted)
{
m_transactionStarted->commit();
delete m_transactionStarted;
m_transactionStarted = NULL;
}
m->accept();
m_canvas->update();
m_view->stopGesture();
}
void ResizeGesture::doResize(bool scaleContent)
{
PageItem* currItem = m_doc->m_Selection->itemAt(0);
QString targetName = Um::SelectionGroup;
QPixmap* targetIcon = Um::IGroup;
if (!m_doc->m_Selection->isMultipleSelection())
{
targetName = currItem->getUName();
targetIcon = currItem->getUPixmap();
}
if (!m_transactionStarted)
{
m_transactionStarted = new UndoTransaction(Um::instance()->beginTransaction(targetName, targetIcon,
Um::Resize, "", Um::IResize));
// qDebug() << "ResizeGesture::doResize: begin transaction" << m_transactionStarted;
}
QRectF newBounds = m_bounds.normalized();
if (m_doc->m_Selection->isMultipleSelection())
{
int RotModeBack = m_doc->RotMode;
m_doc->RotMode = 0;
double gx, gy, gh, gw;
m_doc->m_Selection->getGroupRect(&gx, &gy, &gw, &gh);
QRectF oldBounds(gx, gy, gw, gh);
double scx = oldBounds.width() == 0? 1.0 : (newBounds.width() - m_extraWidth) / oldBounds.width();
double scy = oldBounds.height() == 0? 1.0 : (newBounds.height() - m_extraHeight) / oldBounds.height();
//CB #3012 only scale text in a group if alt is pressed
if ((currItem->itemType() == PageItem::TextFrame) && scaleContent)
m_doc->scaleGroup(scx, scy, true);
else
m_doc->scaleGroup(scx, scy, false);
double dx = newBounds.x() - oldBounds.x();
double dy = newBounds.y() - oldBounds.y();
if (dx != 0 || dy != 0)
m_doc->moveGroup(dx + m_extraX, dy + m_extraY);
m_doc->RotMode = RotModeBack;
}
else
{
if (currItem->itemType() == PageItem::ImageFrame && scaleContent)
{
double divX = (currItem->width() != 0) ? currItem->width() : 1.0;
double divY = (currItem->height() != 0) ? currItem->height() : 1.0;
double imgScX = (newBounds.width() - m_extraWidth) / divX * currItem->imageXScale();
double imgScY = (newBounds.height() - m_extraHeight) / divY * currItem->imageYScale();
// The aspect ratio has been fixed, so make the modification in the direction of the larger movement.
if (currItem->keepAspectRatio() && currItem->fitImageToFrame())
{
if (qAbs((newBounds.width() - m_extraWidth) - currItem->width()) > qAbs((newBounds.height() - m_extraHeight) - currItem->height()))
imgScY = imgScX;
else
imgScX = imgScY;
}
currItem->setImageXYScale(imgScX, imgScY);
}
else if (currItem->itemType() == PageItem::ImageFrame && currItem->PictureIsAvailable)
{
double dx = ((newBounds.x() + m_extraX) - currItem->xPos());
double dy = ((newBounds.y() + m_extraY) - currItem->yPos());
double cosa = cos(currItem->rotation() * M_PI / 180.0);
double sina = sin(currItem->rotation() * M_PI / 180.0);
double xoff = -(cosa*dx + sina*dy);
if (currItem->imageFlippedH())
xoff += (currItem->width() - (newBounds.width() - m_extraWidth));
double yoff = -(cosa*dy - sina*dx);
if (currItem->imageFlippedV())
yoff += (currItem->height() - (newBounds.height() - m_extraHeight));
if (xoff != 0.0 || yoff != 0.0)
{
currItem->moveImageInFrame(xoff / currItem->imageXScale(), yoff / currItem->imageYScale());
}
}
// We do not want to scale the text of a linked frame
// as it would alter text in other frames of the string
else if((currItem->itemType() == PageItem::TextFrame)
&& (currItem->nextInChain() == 0)
&& (currItem->prevInChain() == 0)
&& scaleContent)
{
double divX = (currItem->width() != 0) ? currItem->width() : 1.0;
double divY = (currItem->height() != 0) ? currItem->height() : 1.0;
double txtScX = (newBounds.width() - m_extraWidth) / divX;
double txtScY = (newBounds.height() - m_extraHeight) / divY;
if (currItem->itemText.length() != 0)
{
for (int aa = 0; aa < currItem->itemText.length(); ++aa)
{
#if 0 // hard to decide if it’s batter to scale or to change font size
currItem->itemText.item(aa)->setScaleV(
qMax(qMin(qRound(currItem->itemText.item(aa)->scaleV()*txtScY), 4000), 100));
currItem->itemText.item(aa)->setScaleH(
qMax(qMin(qRound(currItem->itemText.item(aa)->scaleH() * txtScX), 4000), 100));
#else
currItem->itemText.item(aa)->setFontSize(
qMax(qMin(currItem->itemText.item(aa)->fontSize() * txtScY, 4000.0), 1.0));
currItem->itemText.item(aa)->setScaleH(
qMax(qMin(qRound(currItem->itemText.item(aa)->scaleH() * txtScX / txtScY), 4000), 100));
#endif
// We need to scale the linespacing _only once_ per paragraph.
if((aa == 0)
|| ( SpecialChars::isBreak(currItem->itemText.itemText(aa - 1).at(0))))
{
ParagraphStyle ps(currItem->itemText.paragraphStyle(aa));
double oldLS(currItem->itemText.paragraphStyle(aa).lineSpacing());
ps.setLineSpacing(qMax(qRound(oldLS * txtScY), 1));
currItem->itemText.setStyle(aa,ps);
}
}
}
}
currItem->setXYPos(newBounds.x() + m_extraX, newBounds.y() + m_extraY);
currItem->setWidth(newBounds.width() - m_extraWidth);
currItem->setHeight(newBounds.height() - m_extraHeight);
// rotation does not change
}
m_origBounds = m_bounds;
currItem->updateClip();
}
void ResizeGesture::mouseMoveEvent(QMouseEvent *m)
{
adjustBounds(m);
FPoint where = m_canvas->globalToCanvas(m->globalPos());
if (// directly after a create the shape of an item isnt really usable, so we fix here
m_origBounds.width() < 20 || m_origBounds.height() < 20 ||
// and if we resize outside of the current canvas dimensions, we need to enlarge it
where.x() < m_doc->minCanvasCoordinate.x() || where.y() < m_doc->minCanvasCoordinate.y() ||
where.x() > m_doc->maxCanvasCoordinate.x() || where.y() > m_doc->maxCanvasCoordinate.y())
{
doResize(m->modifiers() & Qt::AltModifier);
}
m->accept();
QPoint point = m->globalPos() - (m_canvas->mapToParent(QPoint(0, 0)) + m_canvas->parentWidget()->mapToGlobal(QPoint(0, 0)));
m_view->ensureVisible(point.x(), point.y(), 20, 20);
m_canvas->repaint();
QRectF newBounds = m_bounds.normalized();
m_canvas->displaySizeHUD(m->globalPos(), newBounds.width() - m_extraWidth, newBounds.height() - m_extraHeight);
}
void ResizeGesture::adjustBounds(QMouseEvent *m)
{
QMatrix rotation;
FPoint docPoint = m_canvas->globalToCanvas(m->globalPos());
QPointF oldXY = m_bounds.topLeft();
// proportional resize
bool constrainRatio = ((m->modifiers() & Qt::ControlModifier) != Qt::NoModifier);
if (m_mousePressPoint == m->globalPos())
{
m_bounds = m_mousePressBounds;
return;
}
// snap to grid + snap to guides
bool isCorner = m_handle == Canvas::NORTHWEST || m_handle == Canvas::NORTHEAST
|| m_handle == Canvas::SOUTHWEST || m_handle == Canvas::SOUTHEAST;
if (m_rotation == 0 || isCorner)
{
FPoint snappedPoint = m_doc->ApplyGridF(docPoint);
double x = snappedPoint.x(), y = snappedPoint.y();
m_doc->ApplyGuides(&x, &y);
// if (m_doc->ApplyGuides(&x, &y))
// qDebug() << "guides applied:" << snappedPoint.x() << snappedPoint.y() << "to" << x << y;
if (m_handle == Canvas::NORTH || m_handle == Canvas::SOUTH)
// only snap on y-axis
docPoint = FPoint(docPoint.x(), y);
else if (m_handle == Canvas::EAST || m_handle == Canvas::WEST)
// only snap on x-axis
docPoint = FPoint(x, docPoint.y());
else
docPoint = FPoint(x,y);
// qDebug() << "resize snap grid/guides:" << m->globalPos() << "-->" << m_canvas->canvasToGlobal(docPoint);
}
// un-rotate point
if (m_rotation != 0)
{
// rotate point around item position
rotation.translate(m_bounds.x(), m_bounds.y());
rotation.rotate(m_rotation);
rotation.translate(-m_bounds.x(), -m_bounds.y());
// qDebug() << "resize rotated" << m_rotation << "°" << m_bounds << rotation << ":" << point-globalBounds.topLeft() << "-->" << rotation.map(point)-globalBounds.topLeft();
QPointF qp = QPointF(docPoint.x(), docPoint.y());
qp = rotation.inverted().map(qp);
docPoint = FPoint(qp.x(), qp.y());
}
// adjust bounds vertically
switch (m_handle)
{
case Canvas::NORTHWEST:
case Canvas::NORTH:
case Canvas::NORTHEAST:
// qDebug() << "ResizeGesture: top to" << point.y();
m_bounds.setTop(docPoint.y());
break;
case Canvas::SOUTHWEST:
case Canvas::SOUTH:
case Canvas::SOUTHEAST:
// qDebug() << "ResizeGesture: bottom to" << point.y();
m_bounds.setBottom(docPoint.y());
break;
default:
break;
}
// adjust bounds horizontally
switch (m_handle)
{
case Canvas::NORTHWEST:
case Canvas::WEST:
case Canvas::SOUTHWEST:
// qDebug() << "ResizeGesture: left to" << point.x();
m_bounds.setLeft(docPoint.x());
break;
case Canvas::NORTHEAST:
case Canvas::EAST:
case Canvas::SOUTHEAST:
// qDebug() << "ResizeGesture: right to" << point.x();
m_bounds.setRight(docPoint.x());
break;
default:
break;
}
// constrain ratio
double newRatio = double(m_bounds.width()) / double(m_bounds.height());
if (constrainRatio && m_origRatio != newRatio)
{
// qDebug() << "constrain ratio:" << m_bounds << newRatio << "to" << m_origRatio;
int newWidth = qRound(m_bounds.height() * m_origRatio);
int newHeight = qRound(m_bounds.width() / m_origRatio);
switch (m_handle)
{
case Canvas::NORTHWEST:
// axis: topleft + t*[origRatio, 1] t:= y-top
// [x',y] = [left, top] + [(y-top)*origRatio, y-top]
// = [left + (y-top)*origRatio, y]
// x < x' => mouse is WEST, x > x' => mouse is NORTH
// x < left + (y-top)*origratio <=> x - left < (y - top) * origratio
// qDebug() << "NORTHWEST" << point << m_origBounds.topLeft() << m_origRatio
// << (point.x() - m_origBounds.left() < (point.y()-m_origBounds.top()) * m_origRatio);
if (docPoint.x() - m_origBounds.left() < (docPoint.y()-m_origBounds.top()) * m_origRatio)
m_bounds.setTop(m_bounds.top() - newHeight + m_bounds.height());
else
m_bounds.setLeft(m_bounds.left() - newWidth + m_bounds.width());
break;
case Canvas::SOUTHWEST:
// axis: bottomleft + t*[origRatio, -1] t:= bottom-y
// (x',y) = [left, bottom] + [(bottom-y)*origRatio, -bottom+y]
// = [left + (bottom-y)*origRatio, y]
// x < x' => mouse is WEST, x > x' => mouse is SOUTH
// x < left + (bottom-y)*origratio <=> x - left < (bottom-y) * origratio
// qDebug() << "SOUTHWEST" << point << m_origBounds.bottomLeft() << m_origRatio
// << (point.x() - m_origBounds.left() < (m_origBounds.bottom() - point.y()) * m_origRatio);
if (docPoint.x() - m_origBounds.left() < (m_origBounds.bottom() - docPoint.y()) * m_origRatio)
m_bounds.setHeight(newHeight);
else
m_bounds.setLeft(m_bounds.left() - newWidth + m_bounds.width());
break;
case Canvas::NORTHEAST:
// cf. SOUTHWEST
if (docPoint.x() - m_origBounds.left() > (m_origBounds.bottom() - docPoint.y()) * m_origRatio)
m_bounds.setTop(m_bounds.top() - newHeight + m_bounds.height());
else
m_bounds.setWidth(newWidth);
break;
case Canvas::SOUTHEAST:
// cf. NORTHWEST
if (docPoint.x() - m_origBounds.left() > (docPoint.y()-m_origBounds.top()) * m_origRatio)
m_bounds.setHeight(newHeight);
else
m_bounds.setWidth(newWidth);
break;
case Canvas::WEST:
case Canvas::EAST:
// (origBounds.top + origBounds.bottom) / 2 is the horizontal axis
// keep that fixed
m_bounds.setTop(((m_origBounds.top() + m_origBounds.bottom()) / 2) - newHeight / 2);
m_bounds.setHeight(newHeight);
break;
case Canvas::NORTH:
case Canvas::SOUTH:
// (origBounds.left + origBounds.right) / 2 is the vertical axis
// keep that fixed
m_bounds.setLeft(((m_origBounds.left() + m_origBounds.right()) / 2) - newWidth / 2);
m_bounds.setWidth(newWidth);
break;
default:
break;
}
// qDebug() << "constrained:" << m_bounds << double(m_bounds.width()) / m_bounds.height();
}
// re-rotate: if top left has changed, then it needs rotation
if (m_rotation != 0 && oldXY != m_bounds.topLeft())
{
m_bounds.moveTo(rotation.map(m_bounds.topLeft()));
// fix opposite corner to avoid aggregating rounding errors
QPointF origFixPoint, newFixPoint;
switch (m_handle)
{
case Canvas::NORTHWEST:
origFixPoint = m_origBounds.bottomRight();
newFixPoint = m_bounds.bottomRight();
break;
case Canvas::WEST:
origFixPoint = m_origBounds.topRight() + QPointF(0, m_origBounds.height()/2);
newFixPoint = m_bounds.topRight() + QPointF(0, m_bounds.height()/2);
break;
case Canvas::SOUTHWEST:
origFixPoint = m_origBounds.topRight();
newFixPoint = m_bounds.topRight();
break;
case Canvas::SOUTH:
origFixPoint = m_origBounds.topLeft() + QPointF(m_origBounds.width()/2, 0);
newFixPoint = m_bounds.topLeft() + QPointF(m_bounds.width()/2, 0);
break;
case Canvas::SOUTHEAST:
origFixPoint = m_origBounds.topLeft();
newFixPoint = m_bounds.topLeft();
break;
case Canvas::EAST:
origFixPoint = m_origBounds.topLeft() + QPointF(0, m_origBounds.height()/2);
newFixPoint = m_bounds.topLeft() + QPointF(0, m_bounds.height()/2);
break;
case Canvas::NORTHEAST:
origFixPoint = m_origBounds.bottomLeft();
newFixPoint = m_bounds.bottomLeft();
break;
case Canvas::NORTH:
origFixPoint = m_origBounds.bottomLeft() + QPointF(m_origBounds.width()/2, 0);
newFixPoint = m_bounds.bottomLeft() + QPointF(m_bounds.width()/2, 0);
break;
default:
origFixPoint = m_origBounds.topLeft();
newFixPoint = m_bounds.topLeft();
break;
}
origFixPoint = m_origBounds.topLeft() + rotation.map(origFixPoint - m_origBounds.topLeft());
newFixPoint = m_bounds.topLeft() + rotation.map(newFixPoint - m_bounds.topLeft());
if (origFixPoint != newFixPoint)
m_bounds.translate(origFixPoint - newFixPoint);
}
}
void ResizeGesture::mousePressEvent(QMouseEvent *m)
{
FPoint point = m_canvas->globalToCanvas(m->globalPos());
m_mousePressPoint = m->globalPos();
if (m_doc->m_Selection->count() == 0)
{
m_handle = Canvas::OUTSIDE;
}
else if (m_doc->m_Selection->isMultipleSelection())
{
double gx, gy, gh, gw;
m_doc->m_Selection->getVisualGroupRect(&gx, &gy, &gw, &gh);
m_handle = m_canvas->frameHitTest(QPointF(point.x(), point.y()), QRectF(gx,gy,gw,gh));
}
else
{
m_handle = m_canvas->frameHitTest(QPointF(point.x(), point.y()), m_doc->m_Selection->itemAt(0));
}
if (m_handle > 0)
{
prepare(m_handle);
m->accept();
m_mousePressBounds = m_bounds;
}
}