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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 05:54:39 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 05:54:39 +0000
commit267c6f2ac71f92999e969232431ba04678e7437e (patch)
tree358c9467650e1d0a1d7227a21dac2e3d08b622b2 /vcl/qt5/QtGraphics_GDI.cxx
parentInitial commit. (diff)
downloadlibreoffice-267c6f2ac71f92999e969232431ba04678e7437e.tar.xz
libreoffice-267c6f2ac71f92999e969232431ba04678e7437e.zip
Adding upstream version 4:24.2.0.upstream/4%24.2.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vcl/qt5/QtGraphics_GDI.cxx')
-rw-r--r--vcl/qt5/QtGraphics_GDI.cxx710
1 files changed, 710 insertions, 0 deletions
diff --git a/vcl/qt5/QtGraphics_GDI.cxx b/vcl/qt5/QtGraphics_GDI.cxx
new file mode 100644
index 0000000000..2005de80f7
--- /dev/null
+++ b/vcl/qt5/QtGraphics_GDI.cxx
@@ -0,0 +1,710 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <QtGraphics.hxx>
+
+#include <QtBitmap.hxx>
+#include <QtPainter.hxx>
+
+#include <sal/log.hxx>
+
+#include <QtGui/QPainter>
+#include <QtGui/QScreen>
+#include <QtGui/QWindow>
+#include <QtWidgets/QWidget>
+
+#include <numeric>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <basegfx/polygon/b2dpolypolygontools.hxx>
+
+QtGraphicsBackend::QtGraphicsBackend(QtFrame* pFrame, QImage* pQImage)
+ : m_pFrame(pFrame)
+ , m_pQImage(pQImage)
+ , m_oLineColor(std::in_place, 0x00, 0x00, 0x00)
+ , m_oFillColor(std::in_place, 0xFF, 0xFF, 0XFF)
+ , m_eCompositionMode(QPainter::CompositionMode_SourceOver)
+{
+ ResetClipRegion();
+}
+
+QtGraphicsBackend::~QtGraphicsBackend() {}
+
+const basegfx::B2DPoint aHalfPointOfs(0.5, 0.5);
+
+static void AddPolygonToPath(QPainterPath& rPath, const basegfx::B2DPolygon& rPolygon,
+ bool bClosePath, bool bPixelSnap, bool bLineDraw)
+{
+ const int nPointCount = rPolygon.count();
+ // short circuit if there is nothing to do
+ if (nPointCount == 0)
+ return;
+
+ const bool bHasCurves = rPolygon.areControlPointsUsed();
+ for (int nPointIdx = 0, nPrevIdx = 0;; nPrevIdx = nPointIdx++)
+ {
+ int nClosedIdx = nPointIdx;
+ if (nPointIdx >= nPointCount)
+ {
+ // prepare to close last curve segment if needed
+ if (bClosePath && (nPointIdx == nPointCount))
+ nClosedIdx = 0;
+ else
+ break;
+ }
+
+ basegfx::B2DPoint aPoint = rPolygon.getB2DPoint(nClosedIdx);
+
+ if (bPixelSnap)
+ {
+ // snap device coordinates to full pixels
+ aPoint.setX(basegfx::fround(aPoint.getX()));
+ aPoint.setY(basegfx::fround(aPoint.getY()));
+ }
+
+ if (bLineDraw)
+ aPoint += aHalfPointOfs;
+ if (!nPointIdx)
+ {
+ // first point => just move there
+ rPath.moveTo(aPoint.getX(), aPoint.getY());
+ continue;
+ }
+
+ bool bPendingCurve = false;
+ if (bHasCurves)
+ {
+ bPendingCurve = rPolygon.isNextControlPointUsed(nPrevIdx);
+ bPendingCurve |= rPolygon.isPrevControlPointUsed(nClosedIdx);
+ }
+
+ if (!bPendingCurve) // line segment
+ rPath.lineTo(aPoint.getX(), aPoint.getY());
+ else // cubic bezier segment
+ {
+ basegfx::B2DPoint aCP1 = rPolygon.getNextControlPoint(nPrevIdx);
+ basegfx::B2DPoint aCP2 = rPolygon.getPrevControlPoint(nClosedIdx);
+ if (bLineDraw)
+ {
+ aCP1 += aHalfPointOfs;
+ aCP2 += aHalfPointOfs;
+ }
+ rPath.cubicTo(aCP1.getX(), aCP1.getY(), aCP2.getX(), aCP2.getY(), aPoint.getX(),
+ aPoint.getY());
+ }
+ }
+
+ if (bClosePath)
+ rPath.closeSubpath();
+}
+
+static bool AddPolyPolygonToPath(QPainterPath& rPath, const basegfx::B2DPolyPolygon& rPolyPoly,
+ bool bPixelSnap, bool bLineDraw)
+{
+ if (rPolyPoly.count() == 0)
+ return false;
+ for (auto const& rPolygon : rPolyPoly)
+ {
+ AddPolygonToPath(rPath, rPolygon, true, bPixelSnap, bLineDraw);
+ }
+ return true;
+}
+
+void QtGraphicsBackend::setClipRegion(const vcl::Region& rRegion)
+{
+ if (rRegion.IsRectangle())
+ {
+ m_aClipRegion = toQRect(rRegion.GetBoundRect());
+ if (!m_aClipPath.isEmpty())
+ {
+ QPainterPath aPath;
+ m_aClipPath.swap(aPath);
+ }
+ }
+ else if (!rRegion.HasPolyPolygonOrB2DPolyPolygon())
+ {
+ QRegion aQRegion;
+ RectangleVector aRectangles;
+ rRegion.GetRegionRectangles(aRectangles);
+ for (const auto& rRect : aRectangles)
+ aQRegion += toQRect(rRect);
+ m_aClipRegion = aQRegion;
+ if (!m_aClipPath.isEmpty())
+ {
+ QPainterPath aPath;
+ m_aClipPath.swap(aPath);
+ }
+ }
+ else
+ {
+ QPainterPath aPath;
+ const basegfx::B2DPolyPolygon aPolyClip(rRegion.GetAsB2DPolyPolygon());
+ AddPolyPolygonToPath(aPath, aPolyClip, !getAntiAlias(), false);
+ m_aClipPath.swap(aPath);
+ if (!m_aClipRegion.isEmpty())
+ {
+ QRegion aRegion;
+ m_aClipRegion.swap(aRegion);
+ }
+ }
+}
+
+void QtGraphicsBackend::ResetClipRegion()
+{
+ if (m_pQImage)
+ m_aClipRegion = QRegion(m_pQImage->rect());
+ else
+ m_aClipRegion = QRegion();
+ if (!m_aClipPath.isEmpty())
+ {
+ QPainterPath aPath;
+ m_aClipPath.swap(aPath);
+ }
+}
+
+void QtGraphicsBackend::drawPixel(tools::Long nX, tools::Long nY)
+{
+ QtPainter aPainter(*this);
+ aPainter.drawPoint(nX, nY);
+ aPainter.update(nX, nY, 1, 1);
+}
+
+void QtGraphicsBackend::drawPixel(tools::Long nX, tools::Long nY, Color nColor)
+{
+ QtPainter aPainter(*this);
+ aPainter.setPen(toQColor(nColor));
+ aPainter.setPen(Qt::SolidLine);
+ aPainter.drawPoint(nX, nY);
+ aPainter.update(nX, nY, 1, 1);
+}
+
+void QtGraphicsBackend::drawLine(tools::Long nX1, tools::Long nY1, tools::Long nX2, tools::Long nY2)
+{
+ QtPainter aPainter(*this);
+ aPainter.drawLine(nX1, nY1, nX2, nY2);
+
+ if (nX1 > nX2)
+ std::swap(nX1, nX2);
+ if (nY1 > nY2)
+ std::swap(nY1, nY2);
+ aPainter.update(nX1, nY1, nX2 - nX1 + 1, nY2 - nY1 + 1);
+}
+
+void QtGraphicsBackend::drawRect(tools::Long nX, tools::Long nY, tools::Long nWidth,
+ tools::Long nHeight)
+{
+ if (!m_oFillColor && !m_oLineColor)
+ return;
+
+ QtPainter aPainter(*this, true);
+ if (m_oFillColor)
+ aPainter.fillRect(nX, nY, nWidth, nHeight, aPainter.brush());
+ if (m_oLineColor)
+ aPainter.drawRect(nX, nY, nWidth - 1, nHeight - 1);
+ aPainter.update(nX, nY, nWidth, nHeight);
+}
+
+void QtGraphicsBackend::drawPolyLine(sal_uInt32 nPoints, const Point* pPtAry)
+{
+ if (0 == nPoints)
+ return;
+
+ QtPainter aPainter(*this);
+ QPoint* pPoints = new QPoint[nPoints];
+ QPoint aTopLeft(pPtAry->getX(), pPtAry->getY());
+ QPoint aBottomRight = aTopLeft;
+ for (sal_uInt32 i = 0; i < nPoints; ++i, ++pPtAry)
+ {
+ pPoints[i] = QPoint(pPtAry->getX(), pPtAry->getY());
+ if (pPtAry->getX() < aTopLeft.x())
+ aTopLeft.setX(pPtAry->getX());
+ if (pPtAry->getY() < aTopLeft.y())
+ aTopLeft.setY(pPtAry->getY());
+ if (pPtAry->getX() > aBottomRight.x())
+ aBottomRight.setX(pPtAry->getX());
+ if (pPtAry->getY() > aBottomRight.y())
+ aBottomRight.setY(pPtAry->getY());
+ }
+ aPainter.drawPolyline(pPoints, nPoints);
+ delete[] pPoints;
+ aPainter.update(QRect(aTopLeft, aBottomRight));
+}
+
+void QtGraphicsBackend::drawPolygon(sal_uInt32 nPoints, const Point* pPtAry)
+{
+ QtPainter aPainter(*this, true);
+ QPolygon aPolygon(nPoints);
+ for (sal_uInt32 i = 0; i < nPoints; ++i, ++pPtAry)
+ aPolygon.setPoint(i, pPtAry->getX(), pPtAry->getY());
+ aPainter.drawPolygon(aPolygon);
+ aPainter.update(aPolygon.boundingRect());
+}
+
+void QtGraphicsBackend::drawPolyPolygon(sal_uInt32 nPolyCount, const sal_uInt32* pPoints,
+ const Point** ppPtAry)
+{
+ // ignore invisible polygons
+ if (!m_oFillColor && !m_oLineColor)
+ return;
+
+ QPainterPath aPath;
+ for (sal_uInt32 nPoly = 0; nPoly < nPolyCount; nPoly++)
+ {
+ const sal_uInt32 nPoints = pPoints[nPoly];
+ if (nPoints > 1)
+ {
+ const Point* pPtAry = ppPtAry[nPoly];
+ aPath.moveTo(pPtAry->getX(), pPtAry->getY());
+ pPtAry++;
+ for (sal_uInt32 nPoint = 1; nPoint < nPoints; nPoint++, pPtAry++)
+ aPath.lineTo(pPtAry->getX(), pPtAry->getY());
+ aPath.closeSubpath();
+ }
+ }
+
+ QtPainter aPainter(*this, true);
+ aPainter.drawPath(aPath);
+ aPainter.update(aPath.boundingRect());
+}
+
+void QtGraphicsBackend::drawPolyPolygon(const basegfx::B2DHomMatrix& rObjectToDevice,
+ const basegfx::B2DPolyPolygon& rPolyPolygon,
+ double fTransparency)
+{
+ // ignore invisible polygons
+ if (!m_oFillColor && !m_oLineColor)
+ return;
+ if ((fTransparency >= 1.0) || (fTransparency < 0))
+ return;
+
+ // Fallback: Transform to DeviceCoordinates
+ basegfx::B2DPolyPolygon aPolyPolygon(rPolyPolygon);
+ aPolyPolygon.transform(rObjectToDevice);
+
+ QPainterPath aPath;
+ // ignore empty polygons
+ if (!AddPolyPolygonToPath(aPath, aPolyPolygon, !getAntiAlias(), m_oLineColor.has_value()))
+ return;
+
+ QtPainter aPainter(*this, true, 255 * (1.0 - fTransparency));
+ aPainter.drawPath(aPath);
+ aPainter.update(aPath.boundingRect());
+}
+
+bool QtGraphicsBackend::drawPolyLineBezier(sal_uInt32 /*nPoints*/, const Point* /*pPtAry*/,
+ const PolyFlags* /*pFlgAry*/)
+{
+ return false;
+}
+
+bool QtGraphicsBackend::drawPolygonBezier(sal_uInt32 /*nPoints*/, const Point* /*pPtAry*/,
+ const PolyFlags* /*pFlgAry*/)
+{
+ return false;
+}
+
+bool QtGraphicsBackend::drawPolyPolygonBezier(sal_uInt32 /*nPoly*/, const sal_uInt32* /*pPoints*/,
+ const Point* const* /*pPtAry*/,
+ const PolyFlags* const* /*pFlgAry*/)
+{
+ return false;
+}
+
+bool QtGraphicsBackend::drawPolyLine(const basegfx::B2DHomMatrix& rObjectToDevice,
+ const basegfx::B2DPolygon& rPolyLine, double fTransparency,
+ double fLineWidth,
+ const std::vector<double>* pStroke, // MM01
+ basegfx::B2DLineJoin eLineJoin, css::drawing::LineCap eLineCap,
+ double fMiterMinimumAngle, bool bPixelSnapHairline)
+{
+ if (!m_oFillColor && !m_oLineColor)
+ {
+ return true;
+ }
+
+ // MM01 check done for simple reasons
+ if (!rPolyLine.count() || fTransparency < 0.0 || fTransparency > 1.0)
+ {
+ return true;
+ }
+
+ // MM01 need to do line dashing as fallback stuff here now
+ const double fDotDashLength(
+ nullptr != pStroke ? std::accumulate(pStroke->begin(), pStroke->end(), 0.0) : 0.0);
+ const bool bStrokeUsed(0.0 != fDotDashLength);
+ assert(!bStrokeUsed || (bStrokeUsed && pStroke));
+ basegfx::B2DPolyPolygon aPolyPolygonLine;
+
+ if (bStrokeUsed)
+ {
+ // apply LineStyle
+ basegfx::utils::applyLineDashing(rPolyLine, // source
+ *pStroke, // pattern
+ &aPolyPolygonLine, // target for lines
+ nullptr, // target for gaps
+ fDotDashLength); // full length if available
+ }
+ else
+ {
+ // no line dashing, just copy
+ aPolyPolygonLine.append(rPolyLine);
+ }
+
+ // Transform to DeviceCoordinates, get DeviceLineWidth, execute PixelSnapHairline
+ aPolyPolygonLine.transform(rObjectToDevice);
+ if (bPixelSnapHairline)
+ {
+ aPolyPolygonLine = basegfx::utils::snapPointsOfHorizontalOrVerticalEdges(aPolyPolygonLine);
+ }
+
+ // tdf#124848 get correct LineWidth in discrete coordinates,
+ if (fLineWidth == 0) // hairline
+ fLineWidth = 1.0;
+ else // Adjust line width for object-to-device scale.
+ fLineWidth = (rObjectToDevice * basegfx::B2DVector(fLineWidth, 0)).getLength();
+
+ // setup poly-polygon path
+ QPainterPath aPath;
+
+ // MM01 todo - I assume that this is OKAY to be done in one run for Qt,
+ // but this NEEDS to be checked/verified
+ for (sal_uInt32 a(0); a < aPolyPolygonLine.count(); a++)
+ {
+ const basegfx::B2DPolygon aPolyLine(aPolyPolygonLine.getB2DPolygon(a));
+ AddPolygonToPath(aPath, aPolyLine, aPolyLine.isClosed(), !getAntiAlias(), true);
+ }
+
+ QtPainter aPainter(*this, false, 255 * (1.0 - fTransparency));
+
+ // setup line attributes
+ QPen aPen = aPainter.pen();
+ aPen.setWidth(fLineWidth);
+
+ switch (eLineJoin)
+ {
+ case basegfx::B2DLineJoin::Bevel:
+ aPen.setJoinStyle(Qt::BevelJoin);
+ break;
+ case basegfx::B2DLineJoin::Round:
+ aPen.setJoinStyle(Qt::RoundJoin);
+ break;
+ case basegfx::B2DLineJoin::NONE:
+ case basegfx::B2DLineJoin::Miter:
+ aPen.setMiterLimit(1.0 / sin(fMiterMinimumAngle / 2.0));
+ aPen.setJoinStyle(Qt::MiterJoin);
+ break;
+ }
+
+ switch (eLineCap)
+ {
+ default: // css::drawing::LineCap_BUTT:
+ aPen.setCapStyle(Qt::FlatCap);
+ break;
+ case css::drawing::LineCap_ROUND:
+ aPen.setCapStyle(Qt::RoundCap);
+ break;
+ case css::drawing::LineCap_SQUARE:
+ aPen.setCapStyle(Qt::SquareCap);
+ break;
+ }
+
+ aPainter.setPen(aPen);
+ aPainter.drawPath(aPath);
+ aPainter.update(aPath.boundingRect());
+ return true;
+}
+
+bool QtGraphicsBackend::drawGradient(const tools::PolyPolygon& /*rPolyPolygon*/,
+ const Gradient& /*rGradient*/)
+{
+ return false;
+}
+
+bool QtGraphicsBackend::implDrawGradient(basegfx::B2DPolyPolygon const& /*rPolyPolygon*/,
+ SalGradient const& /*rGradient*/)
+{
+ return false;
+}
+
+void QtGraphicsBackend::drawScaledImage(const SalTwoRect& rPosAry, const QImage& rImage)
+{
+ QtPainter aPainter(*this);
+ QRect aSrcRect(rPosAry.mnSrcX, rPosAry.mnSrcY, rPosAry.mnSrcWidth, rPosAry.mnSrcHeight);
+ QRect aDestRect(rPosAry.mnDestX, rPosAry.mnDestY, rPosAry.mnDestWidth, rPosAry.mnDestHeight);
+ aPainter.drawImage(aDestRect, rImage, aSrcRect);
+ aPainter.update(aDestRect);
+}
+
+void QtGraphicsBackend::copyArea(tools::Long nDestX, tools::Long nDestY, tools::Long nSrcX,
+ tools::Long nSrcY, tools::Long nSrcWidth, tools::Long nSrcHeight,
+ bool /*bWindowInvalidate*/)
+{
+ if (nDestX == nSrcX && nDestY == nSrcY)
+ return;
+
+ SalTwoRect aTR(nSrcX, nSrcY, nSrcWidth, nSrcHeight, nDestX, nDestY, nSrcWidth, nSrcHeight);
+
+ QImage* pImage = m_pQImage;
+ QImage aImage = pImage->copy(aTR.mnSrcX, aTR.mnSrcY, aTR.mnSrcWidth, aTR.mnSrcHeight);
+ pImage = &aImage;
+ aTR.mnSrcX = 0;
+ aTR.mnSrcY = 0;
+
+ drawScaledImage(aTR, *pImage);
+}
+
+void QtGraphicsBackend::copyBits(const SalTwoRect& rPosAry, SalGraphics* pSrcGraphics)
+{
+ if (rPosAry.mnSrcWidth <= 0 || rPosAry.mnSrcHeight <= 0 || rPosAry.mnDestWidth <= 0
+ || rPosAry.mnDestHeight <= 0)
+ return;
+
+ QImage aImage, *pImage;
+ SalTwoRect aPosAry = rPosAry;
+
+ if (!pSrcGraphics)
+ {
+ pImage = m_pQImage;
+ aImage
+ = pImage->copy(rPosAry.mnSrcX, rPosAry.mnSrcY, rPosAry.mnSrcWidth, rPosAry.mnSrcHeight);
+ pImage = &aImage;
+ aPosAry.mnSrcX = 0;
+ aPosAry.mnSrcY = 0;
+ }
+ else
+ pImage = static_cast<QtGraphics*>(pSrcGraphics)->getQImage();
+
+ drawScaledImage(aPosAry, *pImage);
+}
+
+void QtGraphicsBackend::drawBitmap(const SalTwoRect& rPosAry, const SalBitmap& rSalBitmap)
+{
+ if (rPosAry.mnSrcWidth <= 0 || rPosAry.mnSrcHeight <= 0 || rPosAry.mnDestWidth <= 0
+ || rPosAry.mnDestHeight <= 0)
+ return;
+
+ const QImage* pImage = static_cast<const QtBitmap*>(&rSalBitmap)->GetQImage();
+
+ assert(pImage);
+
+ drawScaledImage(rPosAry, *pImage);
+}
+
+void QtGraphicsBackend::drawBitmap(const SalTwoRect& rPosAry, const SalBitmap& /*rSalBitmap*/,
+ const SalBitmap& /*rTransparentBitmap*/)
+{
+ if (rPosAry.mnSrcWidth <= 0 || rPosAry.mnSrcHeight <= 0 || rPosAry.mnDestWidth <= 0
+ || rPosAry.mnDestHeight <= 0)
+ return;
+
+ assert(rPosAry.mnSrcWidth == rPosAry.mnDestWidth);
+ assert(rPosAry.mnSrcHeight == rPosAry.mnDestHeight);
+}
+
+void QtGraphicsBackend::drawMask(const SalTwoRect& rPosAry, const SalBitmap& /*rSalBitmap*/,
+ Color /*nMaskColor*/)
+{
+ if (rPosAry.mnSrcWidth <= 0 || rPosAry.mnSrcHeight <= 0 || rPosAry.mnDestWidth <= 0
+ || rPosAry.mnDestHeight <= 0)
+ return;
+
+ assert(rPosAry.mnSrcWidth == rPosAry.mnDestWidth);
+ assert(rPosAry.mnSrcHeight == rPosAry.mnDestHeight);
+}
+
+std::shared_ptr<SalBitmap> QtGraphicsBackend::getBitmap(tools::Long nX, tools::Long nY,
+ tools::Long nWidth, tools::Long nHeight)
+{
+ return std::make_shared<QtBitmap>(m_pQImage->copy(nX, nY, nWidth, nHeight));
+}
+
+Color QtGraphicsBackend::getPixel(tools::Long nX, tools::Long nY)
+{
+ return Color(ColorTransparency, m_pQImage->pixel(nX, nY));
+}
+
+void QtGraphicsBackend::invert(tools::Long nX, tools::Long nY, tools::Long nWidth,
+ tools::Long nHeight, SalInvert nFlags)
+{
+ QtPainter aPainter(*this);
+ if (SalInvert::N50 & nFlags)
+ {
+ aPainter.setCompositionMode(QPainter::RasterOp_SourceXorDestination);
+ QBrush aBrush(Qt::white, Qt::Dense4Pattern);
+ aPainter.fillRect(nX, nY, nWidth, nHeight, aBrush);
+ }
+ else
+ {
+ if (SalInvert::TrackFrame & nFlags)
+ {
+ aPainter.setCompositionMode(QPainter::RasterOp_SourceXorDestination);
+ QPen aPen(Qt::white);
+ aPen.setStyle(Qt::DotLine);
+ aPainter.setPen(aPen);
+ aPainter.drawRect(nX, nY, nWidth, nHeight);
+ }
+ else
+ {
+ aPainter.setCompositionMode(QPainter::RasterOp_SourceXorDestination);
+ aPainter.fillRect(nX, nY, nWidth, nHeight, Qt::white);
+ }
+ }
+ aPainter.update(nX, nY, nWidth, nHeight);
+}
+
+void QtGraphicsBackend::invert(sal_uInt32 /*nPoints*/, const Point* /*pPtAry*/,
+ SalInvert /*nFlags*/)
+{
+}
+
+bool QtGraphicsBackend::drawEPS(tools::Long /*nX*/, tools::Long /*nY*/, tools::Long /*nWidth*/,
+ tools::Long /*nHeight*/, void* /*pPtr*/, sal_uInt32 /*nSize*/)
+{
+ return false;
+}
+
+bool QtGraphicsBackend::blendBitmap(const SalTwoRect&, const SalBitmap& /*rBitmap*/)
+{
+ return false;
+}
+
+bool QtGraphicsBackend::blendAlphaBitmap(const SalTwoRect&, const SalBitmap& /*rSrcBitmap*/,
+ const SalBitmap& /*rMaskBitmap*/,
+ const SalBitmap& /*rAlphaBitmap*/)
+{
+ return false;
+}
+
+static QImage getAlphaImage(const SalBitmap& rSourceBitmap, const SalBitmap& rAlphaBitmap)
+{
+ assert(rSourceBitmap.GetSize() == rAlphaBitmap.GetSize());
+ assert(rAlphaBitmap.GetBitCount() == 8 || rAlphaBitmap.GetBitCount() == 1);
+
+ QImage aAlphaMask = *static_cast<const QtBitmap*>(&rAlphaBitmap)->GetQImage();
+
+ const QImage* pBitmap = static_cast<const QtBitmap*>(&rSourceBitmap)->GetQImage();
+ QImage aImage = pBitmap->convertToFormat(Qt_DefaultFormat32);
+ aImage.setAlphaChannel(aAlphaMask);
+ return aImage;
+}
+
+bool QtGraphicsBackend::drawAlphaBitmap(const SalTwoRect& rPosAry, const SalBitmap& rSourceBitmap,
+ const SalBitmap& rAlphaBitmap)
+{
+ drawScaledImage(rPosAry, getAlphaImage(rSourceBitmap, rAlphaBitmap));
+ return true;
+}
+
+bool QtGraphicsBackend::drawTransformedBitmap(const basegfx::B2DPoint& rNull,
+ const basegfx::B2DPoint& rX,
+ const basegfx::B2DPoint& rY,
+ const SalBitmap& rSourceBitmap,
+ const SalBitmap* pAlphaBitmap, double fAlpha)
+{
+ QImage aImage;
+ if (!pAlphaBitmap)
+ aImage = *static_cast<const QtBitmap*>(&rSourceBitmap)->GetQImage();
+ else
+ aImage = getAlphaImage(rSourceBitmap, *pAlphaBitmap);
+
+ const basegfx::B2DVector aXRel = rX - rNull;
+ const basegfx::B2DVector aYRel = rY - rNull;
+
+ QtPainter aPainter(*this);
+ aPainter.setOpacity(fAlpha);
+ aPainter.setTransform(QTransform(aXRel.getX() / aImage.width(), aXRel.getY() / aImage.width(),
+ aYRel.getX() / aImage.height(), aYRel.getY() / aImage.height(),
+ rNull.getX(), rNull.getY()));
+ aPainter.drawImage(QPoint(0, 0), aImage);
+ aPainter.update(aImage.rect());
+ return true;
+}
+
+bool QtGraphicsBackend::hasFastDrawTransformedBitmap() const { return false; }
+
+bool QtGraphicsBackend::drawAlphaRect(tools::Long nX, tools::Long nY, tools::Long nWidth,
+ tools::Long nHeight, sal_uInt8 nTransparency)
+{
+ if (!m_oFillColor && !m_oLineColor)
+ return true;
+ assert(nTransparency <= 100);
+ if (nTransparency > 100)
+ nTransparency = 100;
+ QtPainter aPainter(*this, true, (100 - nTransparency) * (255.0 / 100));
+ if (m_oFillColor)
+ aPainter.fillRect(nX, nY, nWidth, nHeight, aPainter.brush());
+ if (m_oLineColor)
+ aPainter.drawRect(nX, nY, nWidth - 1, nHeight - 1);
+ aPainter.update(nX, nY, nWidth, nHeight);
+ return true;
+}
+
+sal_uInt16 QtGraphicsBackend::GetBitCount() const { return getFormatBits(m_pQImage->format()); }
+
+tools::Long QtGraphicsBackend::GetGraphicsWidth() const { return m_pQImage->width(); }
+
+void QtGraphicsBackend::SetLineColor() { m_oLineColor = std::nullopt; }
+
+void QtGraphicsBackend::SetLineColor(Color nColor) { m_oLineColor = nColor; }
+
+void QtGraphicsBackend::SetFillColor() { m_oFillColor = std::nullopt; }
+
+void QtGraphicsBackend::SetFillColor(Color nColor) { m_oFillColor = nColor; }
+
+void QtGraphicsBackend::SetXORMode(bool bSet, bool)
+{
+ if (bSet)
+ m_eCompositionMode = QPainter::CompositionMode_Xor;
+ else
+ m_eCompositionMode = QPainter::CompositionMode_SourceOver;
+}
+
+void QtGraphicsBackend::SetROPLineColor(SalROPColor /*nROPColor*/) {}
+
+void QtGraphicsBackend::SetROPFillColor(SalROPColor /*nROPColor*/) {}
+
+bool QtGraphicsBackend::supportsOperation(OutDevSupportType eType) const
+{
+ switch (eType)
+ {
+ case OutDevSupportType::TransparentRect:
+ return true;
+ default:
+ return false;
+ }
+}
+
+void QtGraphics::GetResolution(sal_Int32& rDPIX, sal_Int32& rDPIY)
+{
+ char* pForceDpi;
+ if ((pForceDpi = getenv("SAL_FORCEDPI")))
+ {
+ OString sForceDPI(pForceDpi);
+ rDPIX = rDPIY = sForceDPI.toInt32();
+ return;
+ }
+
+ if (!m_pFrame)
+ return;
+
+ QScreen* pScreen = m_pFrame->GetQWidget()->screen();
+ rDPIX = pScreen->logicalDotsPerInchX() * pScreen->devicePixelRatio() + 0.5;
+ rDPIY = pScreen->logicalDotsPerInchY() * pScreen->devicePixelRatio() + 0.5;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */