vcl/qt5/Qt5SvpSurface.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 <utility>
  11
  12 #include <Qt5SvpSurface.hxx>
  13
  14 #include <Qt5SvpGraphics.hxx>
  15
  16 #include <vcl/sysdata.hxx>
  17 #include <vcl/bitmap.hxx>
  18 #include <vcl/virdev.hxx>
  19 #include <vcl/window.hxx>
  20 #include <basegfx/vector/b2isize.hxx>
  21
  22 namespace
  23 {
  24 Size get_surface_size(cairo_surface_t* surface)
  25 {
  26     cairo_t* cr = cairo_create(surface);
  27     double x1, x2, y1, y2;
  28     cairo_clip_extents(cr, &x1, &y1, &x2, &y2);
  29     cairo_destroy(cr);
  30     return Size(x2 - x1, y2 - y1);
  31 }
  32 }
  33
  34 namespace cairo
  35 {
  36 Qt5SvpSurface::Qt5SvpSurface(const CairoSurfaceSharedPtr& pSurface)
  37     : m_pGraphics(nullptr)
  38     , m_pCairoContext(nullptr)
  39     , m_pSurface(pSurface)
  40 {
  41 }
  42
  43 Qt5SvpSurface::Qt5SvpSurface(const Qt5SvpGraphics* pGraphics, int x, int y, int width, int height)
  44     : m_pGraphics(pGraphics)
  45     , m_pCairoContext(pGraphics->getCairoContext(false))
  46 {
  47     cairo_surface_t* surface = cairo_get_target(m_pCairoContext);
  48     m_pSurface.reset(cairo_surface_create_for_rectangle(surface, x, y, width, height),
  49                      &cairo_surface_destroy);
  50 }
  51
  52 Qt5SvpSurface::~Qt5SvpSurface()
  53 {
  54     if (m_pCairoContext)
  55         cairo_destroy(m_pCairoContext);
  56 }
  57
  58 CairoSharedPtr Qt5SvpSurface::getCairo() const
  59 {
  60     return CairoSharedPtr(cairo_create(m_pSurface.get()), &cairo_destroy);
  61 }
  62
  63 SurfaceSharedPtr Qt5SvpSurface::getSimilar(int cairo_content_type, int width, int height) const
  64 {
  65     return SurfaceSharedPtr(new Qt5SvpSurface(CairoSurfaceSharedPtr(
  66         cairo_surface_create_similar(
  67             m_pSurface.get(), static_cast<cairo_content_t>(cairo_content_type), width, height),
  68         &cairo_surface_destroy)));
  69 }
  70
  71 void Qt5SvpSurface::flush() const
  72 {
  73     cairo_surface_flush(m_pSurface.get());
  74     if (m_pGraphics)
  75         m_pGraphics->updateQWidget();
  76 }
  77
  78 VclPtr<VirtualDevice> Qt5SvpSurface::createVirtualDevice() const
  79 {
  80     SystemGraphicsData aSystemGraphicsData;
  81
  82     aSystemGraphicsData.nSize = sizeof(SystemGraphicsData);
  83     aSystemGraphicsData.pSurface = m_pSurface.get();
  84
  85     return VclPtr<VirtualDevice>::Create(aSystemGraphicsData, get_surface_size(m_pSurface.get()),
  86                                          DeviceFormat::DEFAULT);
  87 }
  88
  89 } // namespace cairo
  90
  91 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */