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
SvpSalVirtualDevice(cairo_surface_t * pRefSurface,cairo_surface_t * pPreExistingTarget)34 SvpSalVirtualDevice::SvpSalVirtualDevice(cairo_surface_t* pRefSurface, cairo_surface_t* pPreExistingTarget)
35 : m_pRefSurface(pRefSurface)
36 , m_pSurface(pPreExistingTarget)
37 , m_bOwnsSurface(!pPreExistingTarget)
38 {
39 cairo_surface_reference(m_pRefSurface);
40 }
41
~SvpSalVirtualDevice()42 SvpSalVirtualDevice::~SvpSalVirtualDevice()
43 {
44 if (m_bOwnsSurface)
45 cairo_surface_destroy(m_pSurface);
46 cairo_surface_destroy(m_pRefSurface);
47 }
48
AddGraphics(SvpSalGraphics * pGraphics)49 SvpSalGraphics* SvpSalVirtualDevice::AddGraphics(SvpSalGraphics* pGraphics)
50 {
51 pGraphics->setSurface(m_pSurface, m_aFrameSize);
52 m_aGraphics.push_back(pGraphics);
53 return pGraphics;
54 }
55
AcquireGraphics()56 SalGraphics* SvpSalVirtualDevice::AcquireGraphics()
57 {
58 return AddGraphics(new SvpSalGraphics());
59 }
60
ReleaseGraphics(SalGraphics * pGraphics)61 void SvpSalVirtualDevice::ReleaseGraphics( SalGraphics* pGraphics )
62 {
63 m_aGraphics.erase(std::remove(m_aGraphics.begin(), m_aGraphics.end(), dynamic_cast<SvpSalGraphics*>(pGraphics)), m_aGraphics.end());
64 delete pGraphics;
65 }
66
SetSize(tools::Long nNewDX,tools::Long nNewDY)67 bool SvpSalVirtualDevice::SetSize( tools::Long nNewDX, tools::Long nNewDY )
68 {
69 return SetSizeUsingBuffer(nNewDX, nNewDY, nullptr);
70 }
71
CreateSurface(tools::Long nNewDX,tools::Long nNewDY,sal_uInt8 * const pBuffer)72 void SvpSalVirtualDevice::CreateSurface(tools::Long nNewDX, tools::Long nNewDY, sal_uInt8 *const pBuffer)
73 {
74 if (m_pSurface)
75 {
76 cairo_surface_destroy(m_pSurface);
77 }
78
79 if (pBuffer)
80 {
81 double fXScale, fYScale;
82 if (comphelper::LibreOfficeKit::isActive())
83 {
84 // Force scaling of the painting
85 fXScale = fYScale = comphelper::LibreOfficeKit::getDPIScale();
86 }
87 else
88 {
89 dl_cairo_surface_get_device_scale(m_pRefSurface, &fXScale, &fYScale);
90 nNewDX *= fXScale;
91 nNewDY *= fYScale;
92 }
93
94 m_pSurface = cairo_image_surface_create_for_data(pBuffer, CAIRO_FORMAT_ARGB32,
95 nNewDX, nNewDY, cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, nNewDX));
96
97 dl_cairo_surface_set_device_scale(m_pSurface, fXScale, fYScale);
98 }
99 else
100 {
101 m_pSurface = cairo_surface_create_similar(m_pRefSurface, CAIRO_CONTENT_COLOR_ALPHA, nNewDX, nNewDY);
102 }
103 }
104
SetSizeUsingBuffer(tools::Long nNewDX,tools::Long nNewDY,sal_uInt8 * const pBuffer)105 bool SvpSalVirtualDevice::SetSizeUsingBuffer( tools::Long nNewDX, tools::Long nNewDY,
106 sal_uInt8 *const pBuffer)
107 {
108 if (nNewDX == 0)
109 nNewDX = 1;
110 if (nNewDY == 0)
111 nNewDY = 1;
112
113 if (!m_pSurface || m_aFrameSize.getX() != nNewDX ||
114 m_aFrameSize.getY() != nNewDY)
115 {
116 m_aFrameSize = basegfx::B2IVector(nNewDX, nNewDY);
117
118 if (m_bOwnsSurface)
119 CreateSurface(nNewDX, nNewDY, pBuffer);
120
121 assert(m_pSurface);
122
123 // update device in existing graphics
124 for (auto const& graphic : m_aGraphics)
125 graphic->setSurface(m_pSurface, m_aFrameSize);
126 }
127 return true;
128 }
129
GetWidth() const130 tools::Long SvpSalVirtualDevice::GetWidth() const
131 {
132 return m_pSurface ? m_aFrameSize.getX() : 0;
133 }
134
GetHeight() const135 tools::Long SvpSalVirtualDevice::GetHeight() const
136 {
137 return m_pSurface ? m_aFrameSize.getY() : 0;
138 }
139
140 #endif
141
142 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
143