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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 "canvasmode_copyproperties.h"

#include <QApplication>
#include <QCursor>
#include <QEvent>
#include <QMouseEvent>
#include <QPoint>
#include <QRect>
#include <QDebug>

#include "appmodes.h"
#include "canvas.h"
#include "fpoint.h"
#include "scribus.h"
#include "scribusdoc.h"
#include "scribusview.h"
#include "selection.h"
#include "selectionrubberband.h"
#include "ui/contextmenu.h"
#include "util.h"
#include "util_math.h"


CanvasMode_CopyProperties::CanvasMode_CopyProperties(ScribusView* view) : CanvasMode(view), m_ScMW(view->m_ScMW)
{
}

inline bool CanvasMode_CopyProperties::GetItem(PageItem** pi)
{
        *pi = m_doc->m_Selection->itemAt(0);
        return (*pi) != nullptr;
}

void CanvasMode_CopyProperties::drawControls(QPainter* p)
{
        commonDrawControls(p, false);
}

void CanvasMode_CopyProperties::enterEvent(QEvent *)
{
        if (!m_canvas->m_viewMode.m_MouseButtonPressed)
        {
                setModeCursor();
        }
}

void CanvasMode_CopyProperties::leaveEvent(QEvent *e)
{
}


void CanvasMode_CopyProperties::activate(bool fromGesture)
{
//      qDebug() << "CanvasMode_CopyProperties::activate" << fromGesture;
        CanvasMode::activate(fromGesture);

        m_canvas->m_viewMode.m_MouseButtonPressed = false;
        m_canvas->resetRenderMode();
        m_doc->DragP = false;
        m_doc->leaveDrag = false;
        m_canvas->m_viewMode.operItemMoving = false;
        m_canvas->m_viewMode.operItemResizing = false;
        m_view->MidButt = false;
        Mxp = Myp = -1;
        Dxp = Dyp = -1;
        frameResizeHandle = -1;
        setModeCursor();
        if (fromGesture)
        {
                m_view->update();
        }
}

void CanvasMode_CopyProperties::deactivate(bool forGesture)
{
//      qDebug() << "CanvasMode_CopyProperties::deactivate" << forGesture;
        m_view->setRedrawMarkerShown(false);
        CanvasMode::deactivate(forGesture);
}

void CanvasMode_CopyProperties::keyPressEvent(QKeyEvent *e)
{
        commonkeyPressEvent_Default(e);
}

void CanvasMode_CopyProperties::keyReleaseEvent(QKeyEvent *e)
{
        commonkeyReleaseEvent(e);
}

void CanvasMode_CopyProperties::mouseDoubleClickEvent(QMouseEvent *m)
{
        m->accept();
        m_canvas->m_viewMode.m_MouseButtonPressed = false;
        m_canvas->resetRenderMode();
//      m_view->stopDragTimer();
}

void CanvasMode_CopyProperties::mouseMoveEvent(QMouseEvent *m)
{
        m->accept();
        if (commonMouseMove(m))
                return;
        if ((m_canvas->m_viewMode.m_MouseButtonPressed) && (m->buttons() & Qt::LeftButton))
        {
                QPoint startP = m_canvas->canvasToGlobal(QPointF(Mxp, Myp));
                m_view->redrawMarker->setGeometry(QRect(startP, m->globalPos()).normalized());
                m_view->setRedrawMarkerShown(true);
                m_view->HaveSelRect = true;
                return;
        }
}

void CanvasMode_CopyProperties::mousePressEvent(QMouseEvent *m)
{
//      const double mouseX = m->globalX();
//      const double mouseY = m->globalY();
        const FPoint mousePointDoc = m_canvas->globalToCanvas(m->globalPos());

        m_canvas->PaintSizeRect(QRect());
        m_canvas->m_viewMode.m_MouseButtonPressed = true;
        m_canvas->m_viewMode.operItemMoving = false;
        m_view->HaveSelRect = false;
        m_doc->DragP = false;
        m_doc->leaveDrag = false;
        m->accept();
        m_view->registerMousePress(m->globalPos());
        Mxp = mousePointDoc.x(); //qRound(m->x()/m_canvas->scale() + 0*m_doc->minCanvasCoordinate.x());
        Myp = mousePointDoc.y(); //qRound(m->y()/m_canvas->scale() + 0*m_doc->minCanvasCoordinate.y());
        double Rxp = m_doc->ApplyGridF(FPoint(Mxp, Myp)).x();
        Mxp = qRound(Rxp);
        double Ryp = m_doc->ApplyGridF(FPoint(Mxp, Myp)).y();
        Myp = qRound(Ryp);
        if (m->button() == Qt::MiddleButton)
        {
                m_view->MidButt = true;
                if (m->modifiers() & Qt::ControlModifier)
                        m_view->DrawNew();
                return;
        }
        if (m->button() != Qt::LeftButton)
                return;
        SeleItem(m);
        PageItem *currItem;
        if (GetItem(&currItem))
        {
                double sx, sy, ex, ey, r, skx, sky, fx, fy, ss, sk, sp;
                currItem->m_columnGap = m_doc->ElemToLink->m_columnGap;
                currItem->m_columns = m_doc->ElemToLink->m_columns;
                currItem->setTextToFrameDist(m_doc->ElemToLink->textToFrameDistLeft(), m_doc->ElemToLink->textToFrameDistRight(), m_doc->ElemToLink->textToFrameDistTop(), m_doc->ElemToLink->textToFrameDistBottom());
                // Stroke Properties
                currItem->setLineStyle(m_doc->ElemToLink->lineStyle());
                currItem->setLineWidth(m_doc->ElemToLink->lineWidth());
                currItem->setLineTransparency(m_doc->ElemToLink->lineTransparency());
                currItem->setLineShade(m_doc->ElemToLink->lineShade());
                currItem->setLineColor(m_doc->ElemToLink->lineColor());
                currItem->setLineEnd(m_doc->ElemToLink->lineEnd());
                currItem->setLineJoin(m_doc->ElemToLink->lineJoin());
                currItem->setCustomLineStyle(m_doc->ElemToLink->customLineStyle());
                currItem->setEndArrowIndex(m_doc->ElemToLink->endArrowIndex());
                currItem->setStartArrowIndex(m_doc->ElemToLink->startArrowIndex());
                currItem->setEndArrowScale(m_doc->ElemToLink->endArrowScale());
                currItem->setStartArrowScale(m_doc->ElemToLink->startArrowScale());
                // Fill Properties
                currItem->setFillColor(m_doc->ElemToLink->fillColor());
                currItem->setFillShade(m_doc->ElemToLink->fillShade());
                currItem->setFillTransparency(m_doc->ElemToLink->fillTransparency());
                // Gradient Properties
                currItem->fill_gradient = m_doc->ElemToLink->fill_gradient;
                currItem->setGradient(m_doc->ElemToLink->gradient());
                m_doc->ElemToLink->gradientVector(sx, sy, ex, ey, fx, fy, ss, sk);
                currItem->setGradientVector(sx, sy, ex, ey, fx, fy, ss, sk);
                // Pattern Properties
                currItem->setPattern(m_doc->ElemToLink->pattern());
                m_doc->ElemToLink->patternTransform(sx, sy, ex, ey, r, skx, sky);
                currItem->setPatternTransform(sx, sy, ex, ey, r, skx, sky);
                currItem->setStrokePattern(m_doc->ElemToLink->strokePattern());
                m_doc->ElemToLink->strokePatternTransform(sx, sy, ex, ey, r, skx, sky, sp);
                currItem->setStrokePatternTransform(sx, sy, ex, ey, r, skx, sky, sp);
                currItem->setStrokePatternToPath(m_doc->ElemToLink->isStrokePatternToPath());
                // Set Gradient type after all properties
                currItem->setGradientType(m_doc->ElemToLink->gradientType());

                currItem->stroke_gradient = m_doc->ElemToLink->stroke_gradient;
                currItem->setStrokeGradient(m_doc->ElemToLink->strokeGradient());
                m_doc->ElemToLink->strokeGradientVector(sx, sy, ex, ey, fx, fy, ss, sk);
                currItem->setStrokeGradientVector(sx, sy, ex, ey, fx, fy, ss, sk);
                currItem->setStrokeGradientType(m_doc->ElemToLink->strokeGradientType());
                // Update Item
                m_doc->ElemToLink = currItem;
                currItem->update();
//              emit DocChanged();
//              m_view->updateContents();
        }
        else
        {
                m_doc->ElemToLink = nullptr;
                m_view->requestMode(submodePaintingDone);
                m_view->canvasMode()->mousePressEvent(m);
        }
}

void CanvasMode_CopyProperties::mouseReleaseEvent(QMouseEvent *m)
{
#ifdef GESTURE_FRAME_PREVIEW
        clearPixmapCache();
#endif // GESTURE_FRAME_PREVIEW
        const FPoint mousePointDoc = m_canvas->globalToCanvas(m->globalPos());
        PageItem *currItem;
        m_canvas->m_viewMode.m_MouseButtonPressed = false;
        m_canvas->resetRenderMode();
        m->accept();
//      m_view->stopDragTimer();
        if ((GetItem(&currItem)) && (m->button() == Qt::RightButton) && (!m_doc->DragP))
        {
                createContextMenu(currItem, mousePointDoc.x(), mousePointDoc.y());
                return;
        }
}

//CB-->Doc/Fix
bool CanvasMode_CopyProperties::SeleItem(QMouseEvent *m)
{
        const unsigned SELECT_IN_GROUP = Qt::AltModifier;
        const unsigned SELECT_MULTIPLE = Qt::ShiftModifier;
        const unsigned SELECT_BENEATH = Qt::ControlModifier;
        PageItem *currItem;
        m_canvas->m_viewMode.m_MouseButtonPressed = true;
        FPoint mousePointDoc = m_canvas->globalToCanvas(m->globalPos());
        Mxp = mousePointDoc.x(); //m->x()/m_canvas->scale());
        Myp = mousePointDoc.y(); //m->y()/m_canvas->scale());
        int MxpS = static_cast<int>(mousePointDoc.x()); //m->x()/m_canvas->scale() + 0*m_doc->minCanvasCoordinate.x());
        int MypS = static_cast<int>(mousePointDoc.y()); //m->y()/m_canvas->scale() + 0*m_doc->minCanvasCoordinate.y());
        m_doc->nodeEdit.deselect();
        if (!m_doc->masterPageMode())
        {
                int pgNum = -1;
                int docPageCount = static_cast<int>(m_doc->Pages->count() - 1);
                MarginStruct pageBleeds;
                bool drawBleed = false;
                if (!m_doc->bleeds()->isNull() && m_doc->guidesPrefs().showBleed)
                        drawBleed = true;
                for (int a = docPageCount; a > -1; a--)
                {
                        if (drawBleed)
                                m_doc->getBleeds(a, pageBleeds);
                        int x = static_cast<int>(m_doc->Pages->at(a)->xOffset() - pageBleeds.left());
                        int y = static_cast<int>(m_doc->Pages->at(a)->yOffset() - pageBleeds.top());
                        int w = static_cast<int>(m_doc->Pages->at(a)->width() + pageBleeds.left() + pageBleeds.right());
                        int h = static_cast<int>(m_doc->Pages->at(a)->height() + pageBleeds.bottom() + pageBleeds.top());
                        if (QRect(x, y, w, h).contains(MxpS, MypS))
                        {
                                pgNum = static_cast<int>(a);
                                if (drawBleed)  // check again if its really on the correct page
                                {
                                        for (int a2 = docPageCount; a2 > -1; a2--)
                                        {
                                                int xn = static_cast<int>(m_doc->Pages->at(a2)->xOffset());
                                                int yn = static_cast<int>(m_doc->Pages->at(a2)->yOffset());
                                                int wn = static_cast<int>(m_doc->Pages->at(a2)->width());
                                                int hn = static_cast<int>(m_doc->Pages->at(a2)->height());
                                                if (QRect(xn, yn, wn, hn).contains(MxpS, MypS))
                                                {
                                                        pgNum = static_cast<int>(a2);
                                                        break;
                                                }
                                        }
                                }
                                break;
                        }
                }
                if (pgNum >= 0)
                {
                        if (m_doc->currentPageNumber() != pgNum)
                        {
                                m_doc->setCurrentPage(m_doc->Pages->at(pgNum));
                                m_view->m_ScMW->slotSetCurrentPage(pgNum);
                                m_view->DrawNew();
                        }
                }
                m_view->setRulerPos(m_view->contentsX(), m_view->contentsY());
        }
        currItem = nullptr;
        if ((m->modifiers() & SELECT_BENEATH) != 0)
        {
                for (int i=0; i < m_doc->m_Selection->count(); ++i)
                {
                        if (m_canvas->frameHitTest(QPointF(mousePointDoc.x(),mousePointDoc.y()), m_doc->m_Selection->itemAt(i)) >= 0)
                        {
                                currItem = m_doc->m_Selection->itemAt(i);
                                m_doc->m_Selection->removeItem(currItem);
                                break;
                        }
                }
        }
        else if ( (m->modifiers() & SELECT_MULTIPLE) == Qt::NoModifier || (m_doc->appMode == modeLinkFrames) || (m_doc->appMode == modeUnlinkFrames) )
        {
                m_view->deselectItems(false);
        }
        currItem = m_canvas->itemUnderCursor(m->globalPos(), currItem, (m->modifiers() & SELECT_IN_GROUP));
        if (currItem)
        {
                m_doc->m_Selection->delaySignalsOn();
                if (m_doc->m_Selection->containsItem(currItem))
                {
                        m_doc->m_Selection->removeItem(currItem);
                }
                else
                {
                        //CB: If we have a selection but the user clicks with control on another item that is not below the current
                        //then clear and select the new item
                        if ((m->modifiers() == SELECT_BENEATH) && m_canvas->frameHitTest(QPointF(mousePointDoc.x(),mousePointDoc.y()), currItem) >= 0)
                                m_doc->m_Selection->clear();
                        m_doc->m_Selection->addItem(currItem);
                        if ( (m->modifiers() & SELECT_IN_GROUP) && (!currItem->isGroup()))
                        {
                                currItem->isSingleSel = true;
                        }
                }

                currItem->update();
                m_doc->m_Selection->delaySignalsOff();
                if (m_doc->m_Selection->count() > 1)
                {
                        for (int aa = 0; aa < m_doc->m_Selection->count(); ++aa)
                        {
                                PageItem *bb = m_doc->m_Selection->itemAt(aa);
                                bb->update();
                        }
                        double x, y, w, h;
                        m_doc->m_Selection->getGroupRect(&x, &y, &w, &h);
                        m_view->getGroupRectScreen(&x, &y, &w, &h);
                }
                if (m_doc->m_Selection->count() == 1)
                {
                        frameResizeHandle = m_canvas->frameHitTest(QPointF(mousePointDoc.x(),mousePointDoc.y()), currItem);
                        if ((frameResizeHandle == Canvas::INSIDE) && (!currItem->locked()))
                                m_view->setCursor(QCursor(Qt::SizeAllCursor));
                }
                else
                {
                        m_view->setCursor(QCursor(Qt::SizeAllCursor));
                        m_canvas->m_viewMode.operItemResizing = false;
                }
                return true;
        }
        m_doc->m_Selection->connectItemToGUI();
        if ( !(m->modifiers() & SELECT_MULTIPLE) || (m_doc->appMode == modeLinkFrames) || (m_doc->appMode == modeUnlinkFrames))
                m_view->deselectItems(true);
        return false;
}

void CanvasMode_CopyProperties::createContextMenu(PageItem* /*currItem*/, double mx, double my)
{
        ContextMenu* cmen=nullptr;
        m_view->setCursor(QCursor(Qt::ArrowCursor));
        m_view->setObjectUndoMode();
        Mxp = mx;
        Myp = my;
        cmen = new ContextMenu(*(m_doc->m_Selection), m_ScMW, m_doc);
        if (cmen)
                cmen->exec(QCursor::pos());
        m_view->setGlobalUndoMode();
        delete cmen;
}