vcl/qt5/QtBitmap.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   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 #include <QtBitmap.hxx>
  21 #include <QtTools.hxx>
  22 #include <QtGraphics.hxx>
  23
  24 #include <QtGui/QImage>
  25 #include <QtCore/QVector>
  26 #include <QtGui/QColor>
  27
  28 #include <o3tl/safeint.hxx>
  29 #include <sal/log.hxx>
  30 #include <tools/helpers.hxx>
  31
  32 QtBitmap::QtBitmap() {}
  33
  34 QtBitmap::QtBitmap(const QImage& rImage) { m_pImage.reset(new QImage(rImage)); }
  35
  36 bool QtBitmap::Create(const Size& rSize, vcl::PixelFormat ePixelFormat, const BitmapPalette& rPal)
  37 {
  38     if (ePixelFormat == vcl::PixelFormat::INVALID)
  39         return false;
  40
  41     if (ePixelFormat == vcl::PixelFormat::N1_BPP)
  42         assert(2 >= rPal.GetEntryCount());
  43     if (ePixelFormat == vcl::PixelFormat::N8_BPP)
  44         assert(256 >= rPal.GetEntryCount());
  45
  46     m_pImage.reset(new QImage(toQSize(rSize), getBitFormat(ePixelFormat)));
  47     m_pImage->fill(Qt::transparent);
  48     m_aPalette = rPal;
  49
  50     auto count = rPal.GetEntryCount();
  51     if (count && m_pImage)
  52     {
  53         QVector<QRgb> aColorTable(count);
  54         for (unsigned i = 0; i < count; ++i)
  55             aColorTable[i] = qRgb(rPal[i].GetRed(), rPal[i].GetGreen(), rPal[i].GetBlue());
  56         m_pImage->setColorTable(std::move(aColorTable));
  57     }
  58     return true;
  59 }
  60
  61 bool QtBitmap::Create(const SalBitmap& rSalBmp)
  62 {
  63     const QtBitmap* pBitmap = static_cast<const QtBitmap*>(&rSalBmp);
  64     m_pImage.reset(new QImage(*pBitmap->m_pImage));
  65     m_aPalette = pBitmap->m_aPalette;
  66     return true;
  67 }
  68
  69 bool QtBitmap::Create(const SalBitmap& rSalBmp, SalGraphics* pSalGraphics)
  70 {
  71     const QtBitmap* pBitmap = static_cast<const QtBitmap*>(&rSalBmp);
  72     QtGraphics* pGraphics = static_cast<QtGraphics*>(pSalGraphics);
  73     QImage* pImage = pGraphics->getQImage();
  74     m_pImage.reset(new QImage(pBitmap->m_pImage->convertToFormat(pImage->format())));
  75     return true;
  76 }
  77
  78 bool QtBitmap::Create(const SalBitmap& rSalBmp, vcl::PixelFormat eNewPixelFormat)
  79 {
  80     if (eNewPixelFormat == vcl::PixelFormat::INVALID)
  81         return false;
  82     const QtBitmap* pBitmap = static_cast<const QtBitmap*>(&rSalBmp);
  83     m_pImage.reset(new QImage(pBitmap->m_pImage->convertToFormat(getBitFormat(eNewPixelFormat))));
  84     return true;
  85 }
  86
  87 bool QtBitmap::Create(const css::uno::Reference<css::rendering::XBitmapCanvas>& /*rBitmapCanvas*/,
  88                       Size& /*rSize*/, bool /*bMask*/)
  89 {
  90     return false;
  91 }
  92
  93 void QtBitmap::Destroy() { m_pImage.reset(); }
  94
  95 Size QtBitmap::GetSize() const
  96 {
  97     if (m_pImage)
  98         return toSize(m_pImage->size());
  99     return Size();
 100 }
 101
 102 sal_uInt16 QtBitmap::GetBitCount() const
 103 {
 104     if (m_pImage)
 105         return getFormatBits(m_pImage->format());
 106     return 0;
 107 }
 108
 109 BitmapBuffer* QtBitmap::AcquireBuffer(BitmapAccessMode /*nMode*/)
 110 {
 111     static const BitmapPalette aEmptyPalette;
 112
 113     if (!m_pImage)
 114         return nullptr;
 115
 116     BitmapBuffer* pBuffer = new BitmapBuffer;
 117
 118     pBuffer->mnWidth = m_pImage->width();
 119     pBuffer->mnHeight = m_pImage->height();
 120     pBuffer->mnBitCount = getFormatBits(m_pImage->format());
 121     pBuffer->mpBits = m_pImage->bits();
 122     pBuffer->mnScanlineSize = m_pImage->bytesPerLine();
 123
 124     switch (pBuffer->mnBitCount)
 125     {
 126         case 1:
 127             pBuffer->mnFormat = ScanlineFormat::N1BitMsbPal | ScanlineFormat::TopDown;
 128             pBuffer->maPalette = m_aPalette;
 129             break;
 130         case 8:
 131             pBuffer->mnFormat = ScanlineFormat::N8BitPal | ScanlineFormat::TopDown;
 132             pBuffer->maPalette = m_aPalette;
 133             break;
 134         case 24:
 135             pBuffer->mnFormat = ScanlineFormat::N24BitTcRgb | ScanlineFormat::TopDown;
 136             pBuffer->maPalette = aEmptyPalette;
 137             break;
 138         case 32:
 139         {
 140 #ifdef OSL_BIGENDIAN
 141             pBuffer->mnFormat = ScanlineFormat::N32BitTcArgb | ScanlineFormat::TopDown;
 142 #else
 143             pBuffer->mnFormat = ScanlineFormat::N32BitTcBgra | ScanlineFormat::TopDown;
 144 #endif
 145             pBuffer->maPalette = aEmptyPalette;
 146             break;
 147         }
 148         default:
 149             assert(false);
 150     }
 151
 152     return pBuffer;
 153 }
 154
 155 void QtBitmap::ReleaseBuffer(BitmapBuffer* pBuffer, BitmapAccessMode nMode)
 156 {
 157     m_aPalette = pBuffer->maPalette;
 158     auto count = m_aPalette.GetEntryCount();
 159     if (pBuffer->mnBitCount != 4 && count)
 160     {
 161         QVector<QRgb> aColorTable(count);
 162         for (unsigned i = 0; i < count; ++i)
 163             aColorTable[i]
 164                 = qRgb(m_aPalette[i].GetRed(), m_aPalette[i].GetGreen(), m_aPalette[i].GetBlue());
 165         m_pImage->setColorTable(std::move(aColorTable));
 166     }
 167     delete pBuffer;
 168     if (nMode == BitmapAccessMode::Write)
 169         InvalidateChecksum();
 170 }
 171
 172 bool QtBitmap::GetSystemData(BitmapSystemData& /*rData*/) { return false; }
 173
 174 bool QtBitmap::ScalingSupported() const { return false; }
 175
 176 bool QtBitmap::Scale(const double& /*rScaleX*/, const double& /*rScaleY*/,
 177                      BmpScaleFlag /*nScaleFlag*/)
 178 {
 179     return false;
 180 }
 181
 182 bool QtBitmap::Replace(const Color& /*rSearchColor*/, const Color& /*rReplaceColor*/,
 183                        sal_uInt8 /*nTol*/)
 184 {
 185     return false;
 186 }
 187
 188 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */