vcl/qt5/QtSvpGraphics.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include <sal/config.h>
  11 #include <sal/log.hxx>
  12 #include <salbmp.hxx>
  13
  14 #include <config_cairo_canvas.h>
  15
  16 #include <QtData.hxx>
  17 #include <QtFrame.hxx>
  18 #include <QtGraphics_Controls.hxx>
  19 #include <QtSvpGraphics.hxx>
  20 #include <QtSvpSurface.hxx>
  21 #include <QtTools.hxx>
  22
  23 #include <QtGui/QScreen>
  24 #include <QtGui/QWindow>
  25 #include <QtWidgets/QWidget>
  26
  27 QtSvpGraphics::QtSvpGraphics(QtFrame* pFrame)
  28     : m_pFrame(pFrame)
  29 {
  30     if (!QtData::noNativeControls())
  31         m_pWidgetDraw.reset(new QtGraphics_Controls(*this));
  32     if (m_pFrame)
  33         setDevicePixelRatioF(m_pFrame->devicePixelRatioF());
  34 }
  35
  36 QtSvpGraphics::~QtSvpGraphics() {}
  37
  38 void QtSvpGraphics::updateQWidget() const
  39 {
  40     if (!m_pFrame)
  41         return;
  42     QWidget* pQWidget = m_pFrame->GetQWidget();
  43     if (pQWidget)
  44         pQWidget->update(pQWidget->rect());
  45 }
  46
  47 #if ENABLE_CAIRO_CANVAS
  48
  49 bool QtSvpGraphics::SupportsCairo() const { return true; }
  50
  51 cairo::SurfaceSharedPtr
  52 QtSvpGraphics::CreateSurface(const cairo::CairoSurfaceSharedPtr& rSurface) const
  53 {
  54     return std::make_shared<cairo::QtSvpSurface>(rSurface);
  55 }
  56
  57 cairo::SurfaceSharedPtr QtSvpGraphics::CreateSurface(const OutputDevice& /*rRefDevice*/, int x,
  58                                                      int y, int width, int height) const
  59 {
  60     return std::make_shared<cairo::QtSvpSurface>(this, x, y, width, height);
  61 }
  62
  63 #endif
  64
  65 static void QImage2BitmapBuffer(QImage& rImg, BitmapBuffer& rBuf)
  66 {
  67     assert(rImg.width());
  68     assert(rImg.height());
  69
  70     rBuf.mnWidth = rImg.width();
  71     rBuf.mnHeight = rImg.height();
  72     rBuf.mnBitCount = getFormatBits(rImg.format());
  73     rBuf.mpBits = rImg.bits();
  74     rBuf.mnScanlineSize = rImg.bytesPerLine();
  75 }
  76
  77 void QtSvpGraphics::handleDamage(const tools::Rectangle& rDamagedRegion)
  78 {
  79     assert(m_pWidgetDraw);
  80     assert(dynamic_cast<QtGraphics_Controls*>(m_pWidgetDraw.get()));
  81     assert(!rDamagedRegion.IsEmpty());
  82
  83     QImage* pImage = static_cast<QtGraphics_Controls*>(m_pWidgetDraw.get())->getImage();
  84     assert(pImage);
  85     if (pImage->width() == 0 || pImage->height() == 0)
  86         return;
  87
  88     BitmapBuffer aBuffer;
  89     QImage2BitmapBuffer(*pImage, aBuffer);
  90     SalTwoRect aTR(0, 0, pImage->width(), pImage->height(), rDamagedRegion.Left(),
  91                    rDamagedRegion.Top(), rDamagedRegion.GetWidth(), rDamagedRegion.GetHeight());
  92
  93     getSvpBackend()->drawBitmapBuffer(aTR, &aBuffer, CAIRO_OPERATOR_OVER);
  94 }
  95
  96 void QtSvpGraphics::GetResolution(sal_Int32& rDPIX, sal_Int32& rDPIY)
  97 {
  98     char* pForceDpi;
  99     if ((pForceDpi = getenv("SAL_FORCEDPI")))
 100     {
 101         OString sForceDPI(pForceDpi);
 102         rDPIX = rDPIY = sForceDPI.toInt32();
 103         return;
 104     }
 105
 106     if (!m_pFrame)
 107         return;
 108
 109 #if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
 110     QScreen* pScreen = m_pFrame->GetQWidget()->screen();
 111 #else
 112     if (!m_pFrame->GetQWidget()->window()->windowHandle())
 113         return;
 114
 115     QScreen* pScreen = m_pFrame->GetQWidget()->window()->windowHandle()->screen();
 116 #endif
 117     rDPIX = pScreen->logicalDotsPerInchX() * pScreen->devicePixelRatio() + 0.5;
 118     rDPIY = pScreen->logicalDotsPerInchY() * pScreen->devicePixelRatio() + 0.5;
 119 }
 120
 121 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */