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Output preview widget (first part)

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Jakub Melka
2021-03-27 16:06:07 +01:00
parent 40bbdd531a
commit 019637f9f2
10 changed files with 485 additions and 37 deletions
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11
Pdf4QtLib/sources/pdftransparencyrenderer.cpp
View File

@@ -989,12 +989,13 @@ void PDFTransparencyRenderer::beginPaint(QSize pixelSize)
Q_ASSERT(m_deviceColorSpace);
Q_ASSERT(m_processColorSpace);
m_originalProcessBitmap = PDFFloatBitmapWithColorSpace();
m_transparencyGroupDataStack.clear();
m_painterStateStack.push(PDFTransparencyPainterState());
// Initialize initial opaque soft mask
PDFFloatBitmap initialSoftMaskBitmap(pixelSize.width(), pixelSize.height(), PDFPixelFormat::createOpacityMask());
initialSoftMaskBitmap.makeOpaque();
PDFFloatBitmap initialSoftMaskBitmap;
createOpaqueSoftMask(initialSoftMaskBitmap, pixelSize.width(), pixelSize.height());
m_painterStateStack.top().softMask = PDFTransparencySoftMask(true, qMove(initialSoftMaskBitmap));
PDFPixelFormat pixelFormat = PDFPixelFormat::createFormat(uint8_t(m_deviceColorSpace->getColorComponentCount()),
@@ -1033,6 +1034,7 @@ void PDFTransparencyRenderer::beginPaint(QSize pixelSize)
m_settings.activeColorMask != PDFPixelFormat::getAllColorsMask());
m_transparencyGroupDataStack.back().activeColorMask = m_settings.activeColorMask;
m_transparencyGroupDataStack.back().transformSpotsToDevice = m_settings.flags.testFlag(PDFTransparencyRendererSettings::SeparationSimulation);
m_transparencyGroupDataStack.back().saveOriginalImage = m_settings.flags.testFlag(PDFTransparencyRendererSettings::SaveOriginalProcessImage);
}
const PDFFloatBitmap& PDFTransparencyRenderer::endPaint()
@@ -2524,6 +2526,11 @@ void PDFTransparencyRenderer::performEndTransparencyGroup(ProcessOrder order, co
}
}
if (sourceData.saveOriginalImage)
{
m_originalProcessBitmap = sourceData.immediateBackdrop;
}
// Collapse spot colors
if (sourceData.transformSpotsToDevice)
{

16
Pdf4QtLib/sources/pdftransparencyrenderer.h
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@@ -136,7 +136,7 @@ private:
/// Represents float bitmap with arbitrary color channel count. Bitmap can also
/// have auxiliary channels, such as shape and opacity channels.
class PDFFloatBitmap
class Pdf4QtLIBSHARED_EXPORT PDFFloatBitmap
{
public:
explicit PDFFloatBitmap();
@@ -311,7 +311,7 @@ private:
};
/// Float bitmap with color space
class PDFFloatBitmapWithColorSpace : public PDFFloatBitmap
class Pdf4QtLIBSHARED_EXPORT PDFFloatBitmapWithColorSpace : public PDFFloatBitmap
{
public:
explicit PDFFloatBitmapWithColorSpace();
@@ -602,6 +602,11 @@ struct PDFTransparencyRendererSettings
/// Display tiling patterns (if this flag is false, tiling patterns aren't processed)
DisplayTilingPatterns = 0x0200,
/// Saves process image before it is transformed into device space
/// and before separation simulation is applied. Active color mask
/// is still applied to this image.
SaveOriginalProcessImage = 0x0400,
};
Q_DECLARE_FLAGS(Flags, Flag)
@@ -671,6 +676,11 @@ public:
/// \param color Color
void clearColor(const PDFColor& color);
/// Returns original process bitmap, before it is transformed into device space,
/// and before separation simulation is being processed. Active color mask is still
/// applied to this image.
PDFFloatBitmapWithColorSpace getOriginalProcessBitmap() const { return m_originalProcessBitmap; }
virtual bool isContentKindSuppressed(ContentKind kind) const override;
virtual void performPathPainting(const QPainterPath& path, bool stroke, bool fill, bool text, Qt::FillRule fillRule) override;
virtual bool performPathPaintingUsingShading(const QPainterPath& path, bool stroke, bool fill, const PDFShadingPattern* shadingPattern) override;
@@ -742,6 +752,7 @@ private:
bool filterColorsUsingMask = false;
uint32_t activeColorMask = PDFPixelFormat::getAllColorsMask();
bool transformSpotsToDevice = false;
bool saveOriginalImage = false;
};
struct PDFTransparencyPainterState
@@ -901,6 +912,7 @@ private:
PDFCachedItem<PDFMappedColor> m_mappedFillColor;
PDFTransparencyRendererSettings m_settings;
PDFDrawBuffer m_drawBuffer;
PDFFloatBitmapWithColorSpace m_originalProcessBitmap;
};
} // namespace pdf

10
Pdf4QtLib/sources/pdfwidgetutils.cpp
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@@ -28,7 +28,7 @@ int qt_default_dpi_y() { return 96; }
namespace pdf
{
int PDFWidgetUtils::getPixelSize(QPaintDevice* device, pdf::PDFReal sizeMM)
int PDFWidgetUtils::getPixelSize(const QPaintDevice* device, pdf::PDFReal sizeMM)
{
const int width = device->width();
const int height = device->height();
@@ -43,21 +43,21 @@ int PDFWidgetUtils::getPixelSize(QPaintDevice* device, pdf::PDFReal sizeMM)
}
}
int PDFWidgetUtils::scaleDPI_x(QPaintDevice* device, int unscaledSize)
int PDFWidgetUtils::scaleDPI_x(const QPaintDevice* device, int unscaledSize)
{
const double logicalDPI_x = device->logicalDpiX();
const double defaultDPI_x = qt_default_dpi_x();
return (logicalDPI_x / defaultDPI_x) * unscaledSize;
}
int PDFWidgetUtils::scaleDPI_y(QPaintDevice* device, int unscaledSize)
int PDFWidgetUtils::scaleDPI_y(const QPaintDevice* device, int unscaledSize)
{
const double logicalDPI_y = device->logicalDpiY();
const double defaultDPI_y = qt_default_dpi_y();
return (logicalDPI_y / defaultDPI_y) * unscaledSize;
}
PDFReal PDFWidgetUtils::scaleDPI_x(QPaintDevice* device, PDFReal unscaledSize)
PDFReal PDFWidgetUtils::scaleDPI_x(const QPaintDevice* device, PDFReal unscaledSize)
{
const double logicalDPI_x = device->logicalDpiX();
const double defaultDPI_x = qt_default_dpi_x();
@@ -77,7 +77,7 @@ void PDFWidgetUtils::scaleWidget(QWidget* widget, QSize unscaledSize)
widget->resize(width, height);
}
QSize PDFWidgetUtils::scaleDPI(QPaintDevice* widget, QSize unscaledSize)
QSize PDFWidgetUtils::scaleDPI(const QPaintDevice* widget, QSize unscaledSize)
{
const double logicalDPI_x = widget->logicalDpiX();
const double logicalDPI_y = widget->logicalDpiY();

10
Pdf4QtLib/sources/pdfwidgetutils.h
View File

@@ -31,19 +31,19 @@ public:
PDFWidgetUtils() = delete;
/// Converts size in MM to pixel size
static int getPixelSize(QPaintDevice* device, pdf::PDFReal sizeMM);
static int getPixelSize(const QPaintDevice* device, pdf::PDFReal sizeMM);
/// Scale horizontal DPI value
/// \param device Paint device to obtain logical DPI for scaling
static int scaleDPI_x(QPaintDevice* device, int unscaledSize);
static int scaleDPI_x(const QPaintDevice* device, int unscaledSize);
/// Scale vertical DPI value
/// \param device Paint device to obtain logical DPI for scaling
static int scaleDPI_y(QPaintDevice* device, int unscaledSize);
static int scaleDPI_y(const QPaintDevice* device, int unscaledSize);
/// Scale horizontal DPI value
/// \param device Paint device to obtain logical DPI for scaling
static PDFReal scaleDPI_x(QPaintDevice* device, PDFReal unscaledSize);
static PDFReal scaleDPI_x(const QPaintDevice* device, PDFReal unscaledSize);
/// Scales widget based on DPI
/// \param widget Widget to be scaled
@@ -53,7 +53,7 @@ public:
/// Scales size based on DPI
/// \param device Paint device to obtain logical DPI for scaling
/// \param unscaledSize Unscaled size
static QSize scaleDPI(QPaintDevice* widget, QSize unscaledSize);
static QSize scaleDPI(const QPaintDevice* widget, QSize unscaledSize);
};
} // namespace pdf