vcl/headless/svpvd.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  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef IOS
  21
  22 #include <headless/svpbmp.hxx>
  23 #include <headless/svpinst.hxx>
  24 #include <headless/svpvd.hxx>
  25 #include <headless/svpgdi.hxx>
  26
  27 #include <basegfx/vector/b2ivector.hxx>
  28 #include <comphelper/lok.hxx>
  29
  30 #include <cairo.h>
  31
  32 using namespace basegfx;
  33
  34 SvpSalVirtualDevice::SvpSalVirtualDevice(DeviceFormat eFormat, cairo_surface_t* pRefSurface)
  35     : m_eFormat(eFormat)
  36     , m_pRefSurface(pRefSurface)
  37     , m_pSurface(nullptr)
  38 {
  39     cairo_surface_reference(m_pRefSurface);
  40 }
  41
  42 SvpSalVirtualDevice::~SvpSalVirtualDevice()
  43 {
  44     cairo_surface_destroy(m_pSurface);
  45     cairo_surface_destroy(m_pRefSurface);
  46 }
  47
  48 SalGraphics* SvpSalVirtualDevice::AcquireGraphics()
  49 {
  50     SvpSalGraphics* pGraphics = new SvpSalGraphics();
  51     pGraphics->setSurface(m_pSurface, m_aFrameSize);
  52     m_aGraphics.push_back( pGraphics );
  53     return pGraphics;
  54 }
  55
  56 void SvpSalVirtualDevice::ReleaseGraphics( SalGraphics* pGraphics )
  57 {
  58     m_aGraphics.erase(std::remove(m_aGraphics.begin(), m_aGraphics.end(), dynamic_cast<SvpSalGraphics*>(pGraphics)), m_aGraphics.end());
  59     delete pGraphics;
  60 }
  61
  62 bool SvpSalVirtualDevice::SetSize( long nNewDX, long nNewDY )
  63 {
  64     return SetSizeUsingBuffer(nNewDX, nNewDY, nullptr);
  65 }
  66
  67 bool SvpSalVirtualDevice::SetSizeUsingBuffer( long nNewDX, long nNewDY,
  68         sal_uInt8 *const pBuffer)
  69 {
  70     if (nNewDX == 0)
  71         nNewDX = 1;
  72     if (nNewDY == 0)
  73         nNewDY = 1;
  74
  75     if (!m_pSurface || m_aFrameSize.getX() != nNewDX ||
  76                        m_aFrameSize.getY() != nNewDY )
  77     {
  78         m_aFrameSize = basegfx::B2IVector(nNewDX, nNewDY);
  79
  80         if (m_pSurface)
  81         {
  82             cairo_surface_destroy(m_pSurface);
  83         }
  84
  85         if (m_eFormat == DeviceFormat::BITMASK)
  86         {
  87             m_pSurface = cairo_surface_create_similar(m_pRefSurface, CAIRO_CONTENT_ALPHA,
  88                                 nNewDX, nNewDY);
  89         }
  90         else if (pBuffer)
  91         {
  92             double fXScale, fYScale;
  93             if (comphelper::LibreOfficeKit::isActive())
  94             {
  95                 // Force scaling of the painting
  96                 fXScale = fYScale = comphelper::LibreOfficeKit::getDPIScale();
  97             }
  98             else
  99             {
 100                 dl_cairo_surface_get_device_scale(m_pRefSurface, &fXScale, &fYScale);
 101                 nNewDX *= fXScale;
 102                 nNewDY *= fYScale;
 103             }
 104
 105             m_pSurface = cairo_image_surface_create_for_data(pBuffer, CAIRO_FORMAT_ARGB32,
 106                                 nNewDX, nNewDY, cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, nNewDX));
 107
 108             dl_cairo_surface_set_device_scale(m_pSurface, fXScale, fYScale);
 109         }
 110         else
 111         {
 112             m_pSurface = cairo_surface_create_similar(m_pRefSurface, CAIRO_CONTENT_COLOR_ALPHA, nNewDX, nNewDY);
 113         }
 114
 115         // update device in existing graphics
 116         for (auto const& graphic : m_aGraphics)
 117             graphic->setSurface(m_pSurface, m_aFrameSize);
 118     }
 119     return true;
 120 }
 121
 122 long SvpSalVirtualDevice::GetWidth() const
 123 {
 124     return m_pSurface ? m_aFrameSize.getX() : 0;
 125 }
 126
 127 long SvpSalVirtualDevice::GetHeight() const
 128 {
 129     return m_pSurface ? m_aFrameSize.getY() : 0;
 130 }
 131
 132 #endif
 133
 134 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */