Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
#include "bluredbrush.h"
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#include "tropcm.h"
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#include "tpixelutils.h"
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#include <qcolor></qcolor>
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namespace {
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static QVector<qrgb> colorTable;</qrgb>
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QImage rasterToQImage(const TRasterP &ras, bool premultiplied = false) {
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  QImage image;
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  if (TRaster32P ras32 = ras)
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    image = QImage(ras->getRawData(), ras->getLx(), ras->getLy(),
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                   premultiplied ? QImage::Format_ARGB32_Premultiplied
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                                 : QImage::Format_ARGB32);
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  else if (TRasterGR8P ras8 = ras) {
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    image = QImage(ras->getRawData(), ras->getLx(), ras->getLy(),
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                   ras->getWrap(), QImage::Format_Indexed8);
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    image.setColorTable(colorTable);
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  }
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  return image;
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}
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//----------------------------------------------------------------------------------
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// drawOrderMode : 0=OverAll, 1=UnderAll, 2=PaletteOrder
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void putOnRasterCM(const TRasterCM32P &out, const TRaster32P &in, int styleId,
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                   int drawOrderMode, bool lockAlpha,
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                   const QSet<int> &aboveStyleIds) {</int>
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  if (!out.getPointer() || !in.getPointer()) return;
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  assert(out->getSize() == in->getSize());
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  int x, y;
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  if (drawOrderMode == 0) {  // OverAll
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    for (y = 0; y < out->getLy(); y++) {
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      for (x = 0; x < out->getLx(); x++) {
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#ifdef _DEBUG
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        assert(x >= 0 && x < in->getLx());
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        assert(y >= 0 && y < in->getLy());
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        assert(x >= 0 && x < out->getLx());
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        assert(y >= 0 && y < out->getLy());
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#endif
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        TPixel32 *inPix = &in->pixels(y)[x];
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        if (inPix->m == 0) continue;
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        TPixelCM32 *outPix = &out->pixels(y)[x];
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        if (lockAlpha && !outPix->isPureInk() && outPix->getPaint() == 0 &&
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            outPix->getTone() == 255) {
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          *outPix = TPixelCM32(outPix->getInk(), outPix->getPaint(),
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                               outPix->getTone());
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          continue;
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        }
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        bool sameStyleId = styleId == outPix->getInk();
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        // line with lock alpha : use original pixel's tone
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        // line with the same style : multiply tones
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        // line with different style : pick darker tone
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        int tone = lockAlpha     ? outPix->getTone()
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                   : sameStyleId ? outPix->getTone() * (255 - inPix->m) / 255
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                                 : std::min(255 - inPix->m, outPix->getTone());
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        int ink  = !sameStyleId && outPix->getTone() < 255 - inPix->m
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                       ? outPix->getInk()
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                       : styleId;
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        *outPix  = TPixelCM32(ink, outPix->getPaint(), tone);
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      }
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    }
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  } else if (drawOrderMode == 1) {  // UnderAll
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    for (y = 0; y < out->getLy(); y++) {
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      for (x = 0; x < out->getLx(); x++) {
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#ifdef _DEBUG
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        assert(x >= 0 && x < in->getLx());
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        assert(y >= 0 && y < in->getLy());
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        assert(x >= 0 && x < out->getLx());
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        assert(y >= 0 && y < out->getLy());
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#endif
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        TPixel32 *inPix = &in->pixels(y)[x];
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        if (inPix->m == 0) continue;
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        TPixelCM32 *outPix = &out->pixels(y)[x];
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        if (lockAlpha && !outPix->isPureInk() && outPix->getPaint() == 0 &&
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            outPix->getTone() == 255) {
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          *outPix = TPixelCM32(outPix->getInk(), outPix->getPaint(),
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                               outPix->getTone());
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          continue;
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        }
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        bool sameStyleId = styleId == outPix->getInk();
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        // line with the same style : multiply tones
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        // line with different style : pick darker tone
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        int tone = sameStyleId ? outPix->getTone() * (255 - inPix->m) / 255
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                               : std::min(255 - inPix->m, outPix->getTone());
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        int ink  = !sameStyleId && outPix->getTone() <= 255 - inPix->m
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                       ? outPix->getInk()
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                       : styleId;
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        *outPix  = TPixelCM32(ink, outPix->getPaint(), tone);
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      }
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    }
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  } else {  // PaletteOrder
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    for (y = 0; y < out->getLy(); y++) {
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      for (x = 0; x < out->getLx(); x++) {
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        TPixel32 *inPix = &in->pixels(y)[x];
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        if (inPix->m == 0) continue;
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        TPixelCM32 *outPix = &out->pixels(y)[x];
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        if (lockAlpha && !outPix->isPureInk() && outPix->getPaint() == 0 &&
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            outPix->getTone() == 255) {
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          *outPix = TPixelCM32(outPix->getInk(), outPix->getPaint(),
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                               outPix->getTone());
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          continue;
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        }
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        bool sameStyleId = styleId == outPix->getInk();
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        // line with the same style : multiply tones
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        // line with different style : pick darker tone
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        int tone = sameStyleId ? outPix->getTone() * (255 - inPix->m) / 255
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                               : std::min(255 - inPix->m, outPix->getTone());
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        bool chooseOutPixInk = outPix->getTone() < 255 - inPix->m ||
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                               (outPix->getTone() == 255 - inPix->m &&
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                                aboveStyleIds.contains(outPix->getInk()));
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        int ink = !sameStyleId && chooseOutPixInk ? outPix->getInk() : styleId;
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        *outPix = TPixelCM32(ink, outPix->getPaint(), tone);
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      }
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    }
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  }
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}
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//----------------------------------------------------------------------------------
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void eraseFromRasterCM(const TRasterCM32P &out, const TRaster32P &in,
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                       bool selective, int selectedStyleId,
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                       const std::wstring &mode) {
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  if (!out.getPointer() || !in.getPointer()) return;
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  assert(out->getSize() == in->getSize());
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  bool eraseLine  = mode == L"Lines" || mode == L"Lines & Areas";
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  bool eraseAreas = mode == L"Areas" || mode == L"Lines & Areas";
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  int x, y;
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  for (y = 0; y < out->getLy(); y++) {
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    for (x = 0; x < out->getLx(); x++) {
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#ifdef _DEBUG
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      assert(y >= 0 && y < in->getLy());
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      assert(y >= 0 && y < out->getLy());
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#endif
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      TPixel32 *inPix = &in->pixels(y)[x];
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      if (inPix->m == 0) continue;
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      TPixelCM32 *outPix = &out->pixels(y)[x];
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      bool eraseInk =
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          !selective || (selective && selectedStyleId == outPix->getInk());
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      bool erasePaint =
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          !selective || (selective && selectedStyleId == outPix->getPaint());
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      int paint = eraseAreas && erasePaint ? 0 : outPix->getPaint();
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      int tone  = inPix->m > 0 && eraseLine && eraseInk
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                      ? std::max(outPix->getTone(), (int)inPix->m)
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                      : outPix->getTone();
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      *outPix   = TPixelCM32(outPix->getInk(), paint, tone);
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    }
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  }
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}
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//----------------------------------------------------------------------------------
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TRasterP rasterFromQImage(
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    const QImage &image)  // no need of const& - Qt uses implicit sharing...
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{
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  QImage::Format format = image.format();
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  if (format == QImage::Format_ARGB32 ||
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      format == QImage::Format_ARGB32_Premultiplied)
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    return TRaster32P(image.width(), image.height(), image.width(),
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                      (TPixelRGBM32 *)image.bits(), false);
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  if (format == QImage::Format_Indexed8)
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    return TRasterGR8P(image.width(), image.height(), image.bytesPerLine(),
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                       (TPixelGR8 *)image.bits(), false);
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  return TRasterP();
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}
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}  // namespace
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//=======================================================
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//
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// BluredBrush
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//
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//=======================================================
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BluredBrush::BluredBrush(const TRaster32P &ras, int size,
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                         const QRadialGradient &gradient, bool doDynamicOpacity)
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    : m_ras(ras)
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    , m_size(size)
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    , m_lastPoint(0, 0)
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    , m_oldOpacity(0)
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    , m_enableDynamicOpacity(doDynamicOpacity) {
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  m_rasImage = rasterToQImage(m_ras, false);
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  m_gradient = gradient;
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  if (colorTable.size() == 0) {
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    int i;
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    for (i = 0; i < 256; i++) colorTable.append(QColor(i, i, i).rgb());
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  }
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}
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//----------------------------------------------------------------------------------
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BluredBrush::~BluredBrush() {}
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//----------------------------------------------------------------------------------
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void BluredBrush::addPoint(const TThickPoint &p, double opacity) {
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  double radius      = p.thick * 0.5;
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  double brushRadius = m_size * 0.5;
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  double scaleFactor = radius / brushRadius;
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  QPainter painter(&m_rasImage);
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  painter.setRenderHint(QPainter::Antialiasing);
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  painter.setPen(Qt::NoPen);
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  painter.setBrush(m_gradient);
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  painter.setTransform(QTransform(scaleFactor, 0.0, 0.0, scaleFactor,
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                                  p.x - radius, p.y - radius),
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                       false);
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  if (m_enableDynamicOpacity) painter.setOpacity(opacity);
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  painter.drawEllipse(0, 0, m_size, m_size);
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  painter.end();
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  m_lastPoint  = p;
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  m_oldOpacity = opacity;
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}
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//----------------------------------------------------------------------------------
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void BluredBrush::addArc(const TThickPoint &pa, const TThickPoint &pb,
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                         const TThickPoint &pc, double opacityA,
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                         double opacityC) {
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  QPainter painter(&m_rasImage);
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  painter.setRenderHint(QPainter::Antialiasing);
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  painter.setPen(Qt::NoPen);
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  // painter.setBrush(m_gradient);
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  TThickQuadratic q(pa, pb, pc);
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  double brushRadius = m_size * 0.5;
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  double t           = 0;
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  while (t <= 1) {
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    t = getNextPadPosition(q, t);
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    if (t > 1) break;
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    TThickPoint point  = q.getThickPoint(t);
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    double radius      = point.thick * 0.5;
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    double scaleFactor = radius / brushRadius;
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    painter.setTransform(QTransform(scaleFactor, 0.0, 0.0, scaleFactor,
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                                    point.x - radius, point.y - radius),
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                         false);
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    if (m_enableDynamicOpacity) {
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      double opacity = opacityA + ((opacityC - opacityA) * t);
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      if (fabs(opacity - m_oldOpacity) > 0.01)
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        opacity =
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            opacity > m_oldOpacity ? m_oldOpacity + 0.01 : m_oldOpacity - 0.01;
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      painter.setOpacity(opacity);
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      painter.setCompositionMode(QPainter::CompositionMode_DestinationAtop);
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      m_oldOpacity = opacity;
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      painter.setBrush(QColor(0, 0, 0, 255));
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    } else
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      painter.setBrush(m_gradient);
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    painter.drawEllipse(0, 0, m_size, m_size);
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    m_lastPoint = point;
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  }
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  painter.end();
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}
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//----------------------------------------------------------------------------------
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double BluredBrush::getNextPadPosition(const TThickQuadratic &q,
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                                       double t) const {
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  TThickPoint p = m_lastPoint;
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  double d      = 0.12 * p.thick;
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  d             = d >= 1.0 ? d : 1.0;
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  double d2     = d * d;
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  if (norm2(q.getP2() - p) < d2) return 2.0;
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  double t2        = (t + 1) * 0.5;
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  TThickPoint p2   = q.getThickPoint(t2);
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  double distance2 = norm2(p2 - p);
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  double lastTMin  = t;
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  double lastTMax  = 1;
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  while (!areAlmostEqual(d2, distance2, 0.25) && t2 != lastTMin &&
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         t2 != lastTMax) {
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    if (distance2 > d2) {
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      lastTMax = t2;
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      t2       = (lastTMin + t2) * 0.5;
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    } else {
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      lastTMin = t2;
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      t2       = (lastTMax + t2) * 0.5;
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    }
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    p2        = q.getThickPoint(t2);
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    distance2 = norm2(p2 - p);
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  }
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  return t2;
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}
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//----------------------------------------------------------------------------------
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void BluredBrush::updateDrawing(const TRasterP ras, const TRasterP rasBackup,
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                                const TPixel32 &color, const TRect &bbox,
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                                double opacity) const {
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  TRect rasRect    = ras->getBounds();
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  TRect targetRect = bbox * rasRect;
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  if (targetRect.isEmpty()) return;
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  QImage image = rasterToQImage(ras, true);
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  QRect qTargetRect(targetRect.x0, targetRect.y0, targetRect.getLx(),
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                    targetRect.getLy());
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  QImage app(qTargetRect.size(), QImage::Format_ARGB32_Premultiplied);
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  QPainter p2(&app);
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  p2.setBrush(QColor(color.r, color.g, color.b));
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  p2.drawRect(app.rect().adjusted(-1, -1, 0, 0));
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  p2.setCompositionMode(QPainter::CompositionMode_DestinationIn);
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  p2.drawImage(QPoint(), m_rasImage, qTargetRect);
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  p2.end();
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  if (ras->getPixelSize() == 4) {
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    QPainter p(&image);
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    p.setClipRect(qTargetRect);
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    p.setCompositionMode(QPainter::CompositionMode_Source);
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    p.drawImage(qTargetRect, rasterToQImage(rasBackup, true), qTargetRect);
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    p.end();
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    p.begin(&image);
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    p.setOpacity(m_enableDynamicOpacity ? 1 : opacity);
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    p.drawImage(qTargetRect, app, app.rect());
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    p.end();
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  } else {
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    QImage targetImage = rasterToQImage(rasBackup).copy(qTargetRect);
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    targetImage        = targetImage.convertToFormat(
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        QImage::Format_ARGB32_Premultiplied, colorTable);
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    QPainter p(&targetImage);
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    p.setOpacity(m_enableDynamicOpacity ? 1 : opacity);
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    p.drawImage(QPoint(), app, app.rect());
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    p.end();
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    targetImage =
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        targetImage.convertToFormat(QImage::Format_Indexed8, colorTable);
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    TRasterGR8P targetRas = rasterFromQImage(targetImage);
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    ras->copy(targetRas, targetRect.getP00());
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  }
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}
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//----------------------------------------------------------------------------------
Toshihiro Shimizu 890ddd
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void BluredBrush::eraseDrawing(const TRasterP ras, const TRasterP rasBackup,
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                               const TRect &bbox, double opacity) const {
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  if (!ras) return;
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  TRect rasRect    = ras->getBounds();
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  TRect targetRect = bbox * rasRect;
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  if (targetRect.isEmpty()) return;
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  QRect qTargetRect(targetRect.x0, targetRect.y0, targetRect.getLx(),
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                    targetRect.getLy());
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  if (ras->getPixelSize() == 4) {
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    QImage image = rasterToQImage(ras, true);
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    QPainter p(&image);
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    p.setClipRect(qTargetRect);
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    p.setCompositionMode(QPainter::CompositionMode_Source);
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    p.drawImage(qTargetRect, rasterToQImage(rasBackup, true), qTargetRect);
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    p.setCompositionMode(QPainter::CompositionMode_DestinationOut);
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    p.setOpacity(opacity);
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    p.drawImage(qTargetRect, m_rasImage, qTargetRect);
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    p.end();
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  } else if (ras->getPixelSize() != 4) {
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    QImage targetImage = rasterToQImage(rasBackup).copy(qTargetRect);
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    targetImage        = targetImage.convertToFormat(
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        QImage::Format_ARGB32_Premultiplied, colorTable);
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    QImage app(qTargetRect.size(), QImage::Format_ARGB32_Premultiplied);
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    QPainter p2(&app);
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    p2.setBrush(QColor(255, 255, 255));
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    p2.drawRect(app.rect().adjusted(-1, -1, 0, 0));
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    p2.setCompositionMode(QPainter::CompositionMode_DestinationIn);
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    p2.drawImage(QPoint(), m_rasImage, qTargetRect);
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    p2.end();
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    QPainter p(&targetImage);
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    p.setOpacity(opacity);
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    p.drawImage(QPoint(), app, app.rect());
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    p.end();
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    targetImage =
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        targetImage.convertToFormat(QImage::Format_Indexed8, colorTable);
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    TRasterGR8P targetRas = rasterFromQImage(targetImage);
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    ras->copy(targetRas, targetRect.getP00());
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  }
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}
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//----------------------------------------------------------------------------------
Toshihiro Shimizu 890ddd
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void BluredBrush::updateDrawing(const TRasterCM32P rasCM,
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                                const TRasterCM32P rasBackupCM,
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                                const TRect &bbox, int styleId,
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                                int drawOrderMode, bool lockAlpha) const {
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  if (!rasCM) return;
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  TRect rasRect    = rasCM->getBounds();
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  TRect targetRect = bbox * rasRect;
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  if (targetRect.isEmpty()) return;
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  rasCM->copy(rasBackupCM->extract(targetRect), targetRect.getP00());
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  putOnRasterCM(rasCM->extract(targetRect), m_ras->extract(targetRect), styleId,
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                drawOrderMode, lockAlpha, m_aboveStyleIds);
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}
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//----------------------------------------------------------------------------------
Toshihiro Shimizu 890ddd
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void BluredBrush::eraseDrawing(const TRasterCM32P rasCM,
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                               const TRasterCM32P rasBackupCM,
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                               const TRect &bbox, bool selective,
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                               int selectedStyleId,
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                               const std::wstring &mode) const {
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  if (!rasCM) return;
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  TRect rasRect    = rasCM->getBounds();
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  TRect targetRect = bbox * rasRect;
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  if (targetRect.isEmpty()) return;
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  rasCM->extract(targetRect)->copy(rasBackupCM->extract(targetRect));
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  eraseFromRasterCM(rasCM->extract(targetRect), m_ras->extract(targetRect),
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                    selective, selectedStyleId, mode);
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}
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//----------------------------------------------------------------------------------
Toshihiro Shimizu 890ddd
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TRect BluredBrush::getBoundFromPoints(
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    const std::vector<tthickpoint> &points) const {</tthickpoint>
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  assert(points.size() <= 3);
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  TThickPoint p = points[0];
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  double radius = p.thick * 0.5;
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  TRectD rectD(p - TPointD(radius, radius), p + TPointD(radius, radius));
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  int i;
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  for (i = 1; i < (int)points.size(); i++) {
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    p      = points[i];
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    radius = p.thick * 0.5;
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    rectD  = rectD +
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            TRectD(p - TPointD(radius, radius), p + TPointD(radius, radius));
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  }
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  TRect rect(tfloor(rectD.x0), tfloor(rectD.y0), tceil(rectD.x1),
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             tceil(rectD.y1));
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  return rect;
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}