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, cairo_surface_t* pPreExistingTarget)
  35     : m_eFormat(eFormat)
  36     , m_pRefSurface(pRefSurface)
  37     , m_pSurface(pPreExistingTarget)
  38     , m_bOwnsSurface(!pPreExistingTarget)
  39 {
  40     cairo_surface_reference(m_pRefSurface);
  41 }
  42
  43 SvpSalVirtualDevice::~SvpSalVirtualDevice()
  44 {
  45     if (m_bOwnsSurface)
  46         cairo_surface_destroy(m_pSurface);
  47     cairo_surface_destroy(m_pRefSurface);
  48 }
  49
  50 SvpSalGraphics* SvpSalVirtualDevice::AddGraphics(SvpSalGraphics* pGraphics)
  51 {
  52     pGraphics->setSurface(m_pSurface, m_aFrameSize);
  53     m_aGraphics.push_back(pGraphics);
  54     return pGraphics;
  55 }
  56
  57 SalGraphics* SvpSalVirtualDevice::AcquireGraphics()
  58 {
  59     return AddGraphics(new SvpSalGraphics());
  60 }
  61
  62 void SvpSalVirtualDevice::ReleaseGraphics( SalGraphics* pGraphics )
  63 {
  64     m_aGraphics.erase(std::remove(m_aGraphics.begin(), m_aGraphics.end(), dynamic_cast<SvpSalGraphics*>(pGraphics)), m_aGraphics.end());
  65     delete pGraphics;
  66 }
  67
  68 bool SvpSalVirtualDevice::SetSize( long nNewDX, long nNewDY )
  69 {
  70     return SetSizeUsingBuffer(nNewDX, nNewDY, nullptr);
  71 }
  72
  73 void SvpSalVirtualDevice::CreateSurface(long nNewDX, long nNewDY, sal_uInt8 *const pBuffer)
  74 {
  75     if (m_pSurface)
  76     {
  77         cairo_surface_destroy(m_pSurface);
  78     }
  79
  80     if (m_eFormat == DeviceFormat::BITMASK)
  81     {
  82         m_pSurface = cairo_surface_create_similar(m_pRefSurface, CAIRO_CONTENT_ALPHA,
  83                             nNewDX, nNewDY);
  84     }
  85     else if (pBuffer)
  86     {
  87         double fXScale, fYScale;
  88         if (comphelper::LibreOfficeKit::isActive())
  89         {
  90             // Force scaling of the painting
  91             fXScale = fYScale = comphelper::LibreOfficeKit::getDPIScale();
  92         }
  93         else
  94         {
  95             dl_cairo_surface_get_device_scale(m_pRefSurface, &fXScale, &fYScale);
  96             nNewDX *= fXScale;
  97             nNewDY *= fYScale;
  98         }
  99
 100         m_pSurface = cairo_image_surface_create_for_data(pBuffer, CAIRO_FORMAT_ARGB32,
 101                             nNewDX, nNewDY, cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, nNewDX));
 102
 103         dl_cairo_surface_set_device_scale(m_pSurface, fXScale, fYScale);
 104     }
 105     else
 106     {
 107         m_pSurface = cairo_surface_create_similar(m_pRefSurface, CAIRO_CONTENT_COLOR_ALPHA, nNewDX, nNewDY);
 108     }
 109 }
 110
 111 bool SvpSalVirtualDevice::SetSizeUsingBuffer( long nNewDX, long nNewDY,
 112         sal_uInt8 *const pBuffer)
 113 {
 114     if (nNewDX == 0)
 115         nNewDX = 1;
 116     if (nNewDY == 0)
 117         nNewDY = 1;
 118
 119     if (!m_pSurface || m_aFrameSize.getX() != nNewDX ||
 120                        m_aFrameSize.getY() != nNewDY)
 121     {
 122         m_aFrameSize = basegfx::B2IVector(nNewDX, nNewDY);
 123
 124         if (m_bOwnsSurface)
 125             CreateSurface(nNewDX, nNewDY, pBuffer);
 126
 127         assert(m_pSurface);
 128
 129         // update device in existing graphics
 130         for (auto const& graphic : m_aGraphics)
 131             graphic->setSurface(m_pSurface, m_aFrameSize);
 132     }
 133     return true;
 134 }
 135
 136 long SvpSalVirtualDevice::GetWidth() const
 137 {
 138     return m_pSurface ? m_aFrameSize.getX() : 0;
 139 }
 140
 141 long SvpSalVirtualDevice::GetHeight() const
 142 {
 143     return m_pSurface ? m_aFrameSize.getY() : 0;
 144 }
 145
 146 #endif
 147
 148 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */