vcl/qt5/QtBitmap.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   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::N8_BPP)
  42         assert(256 >= rPal.GetEntryCount());
  43
  44     m_pImage.reset(new QImage(toQSize(rSize), getBitFormat(ePixelFormat)));
  45     m_pImage->fill(Qt::transparent);
  46     m_aPalette = rPal;
  47
  48     auto count = rPal.GetEntryCount();
  49     if (count && m_pImage)
  50     {
  51         QVector<QRgb> aColorTable(count);
  52         for (unsigned i = 0; i < count; ++i)
  53             aColorTable[i] = qRgb(rPal[i].GetRed(), rPal[i].GetGreen(), rPal[i].GetBlue());
  54         m_pImage->setColorTable(std::move(aColorTable));
  55     }
  56     return true;
  57 }
  58
  59 bool QtBitmap::Create(const SalBitmap& rSalBmp)
  60 {
  61     const QtBitmap* pBitmap = static_cast<const QtBitmap*>(&rSalBmp);
  62     m_pImage.reset(new QImage(*pBitmap->m_pImage));
  63     m_aPalette = pBitmap->m_aPalette;
  64     return true;
  65 }
  66
  67 bool QtBitmap::Create(const SalBitmap& rSalBmp, SalGraphics* pSalGraphics)
  68 {
  69     const QtBitmap* pBitmap = static_cast<const QtBitmap*>(&rSalBmp);
  70     QtGraphics* pGraphics = static_cast<QtGraphics*>(pSalGraphics);
  71     QImage* pImage = pGraphics->getQImage();
  72     m_pImage.reset(new QImage(pBitmap->m_pImage->convertToFormat(pImage->format())));
  73     return true;
  74 }
  75
  76 bool QtBitmap::Create(const SalBitmap& rSalBmp, vcl::PixelFormat eNewPixelFormat)
  77 {
  78     if (eNewPixelFormat == vcl::PixelFormat::INVALID)
  79         return false;
  80     const QtBitmap* pBitmap = static_cast<const QtBitmap*>(&rSalBmp);
  81     m_pImage.reset(new QImage(pBitmap->m_pImage->convertToFormat(getBitFormat(eNewPixelFormat))));
  82     return true;
  83 }
  84
  85 bool QtBitmap::Create(const css::uno::Reference<css::rendering::XBitmapCanvas>& /*rBitmapCanvas*/,
  86                       Size& /*rSize*/, bool /*bMask*/)
  87 {
  88     return false;
  89 }
  90
  91 void QtBitmap::Destroy() { m_pImage.reset(); }
  92
  93 Size QtBitmap::GetSize() const
  94 {
  95     if (m_pImage)
  96         return toSize(m_pImage->size());
  97     return Size();
  98 }
  99
 100 sal_uInt16 QtBitmap::GetBitCount() const
 101 {
 102     if (m_pImage)
 103         return getFormatBits(m_pImage->format());
 104     return 0;
 105 }
 106
 107 BitmapBuffer* QtBitmap::AcquireBuffer(BitmapAccessMode /*nMode*/)
 108 {
 109     static const BitmapPalette aEmptyPalette;
 110
 111     if (!m_pImage)
 112         return nullptr;
 113
 114     BitmapBuffer* pBuffer = new BitmapBuffer;
 115
 116     pBuffer->mnWidth = m_pImage->width();
 117     pBuffer->mnHeight = m_pImage->height();
 118     pBuffer->mnBitCount = getFormatBits(m_pImage->format());
 119     pBuffer->mpBits = m_pImage->bits();
 120     pBuffer->mnScanlineSize = m_pImage->bytesPerLine();
 121     pBuffer->meDirection = ScanlineDirection::TopDown;
 122
 123     switch (pBuffer->mnBitCount)
 124     {
 125         case 1:
 126             pBuffer->meFormat = ScanlineFormat::N1BitMsbPal;
 127             pBuffer->maPalette = m_aPalette;
 128             break;
 129         case 8:
 130             pBuffer->meFormat = ScanlineFormat::N8BitPal;
 131             pBuffer->maPalette = m_aPalette;
 132             break;
 133         case 24:
 134             pBuffer->meFormat = ScanlineFormat::N24BitTcRgb;
 135             pBuffer->maPalette = aEmptyPalette;
 136             break;
 137         case 32:
 138         {
 139 #ifdef OSL_BIGENDIAN
 140             pBuffer->meFormat = ScanlineFormat::N32BitTcArgb;
 141 #else
 142             pBuffer->meFormat = ScanlineFormat::N32BitTcBgra;
 143 #endif
 144             pBuffer->maPalette = aEmptyPalette;
 145             break;
 146         }
 147         default:
 148             assert(false);
 149     }
 150
 151     return pBuffer;
 152 }
 153
 154 void QtBitmap::ReleaseBuffer(BitmapBuffer* pBuffer, BitmapAccessMode nMode)
 155 {
 156     m_aPalette = pBuffer->maPalette;
 157     auto count = m_aPalette.GetEntryCount();
 158     if (pBuffer->mnBitCount != 4 && count)
 159     {
 160         QVector<QRgb> aColorTable(count);
 161         for (unsigned i = 0; i < count; ++i)
 162             aColorTable[i]
 163                 = qRgb(m_aPalette[i].GetRed(), m_aPalette[i].GetGreen(), m_aPalette[i].GetBlue());
 164         m_pImage->setColorTable(std::move(aColorTable));
 165     }
 166     delete pBuffer;
 167     if (nMode == BitmapAccessMode::Write)
 168         InvalidateChecksum();
 169 }
 170
 171 bool QtBitmap::GetSystemData(BitmapSystemData& /*rData*/) { return false; }
 172
 173 bool QtBitmap::ScalingSupported() const { return false; }
 174
 175 bool QtBitmap::Scale(const double& /*rScaleX*/, const double& /*rScaleY*/,
 176                      BmpScaleFlag /*nScaleFlag*/)
 177 {
 178     return false;
 179 }
 180
 181 bool QtBitmap::Replace(const Color& /*rSearchColor*/, const Color& /*rReplaceColor*/,
 182                        sal_uInt8 /*nTol*/)
 183 {
 184     return false;
 185 }
 186
 187 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */