fenix/PDF4QT
1
0
Fork 0
mirror of https://github.com/JakubMelka/PDF4QT.git synced 2025-06-05 21:59:17 +02:00
Code Issues Packages Projects Releases Wiki Activity

Issue #10: Ability to cancel the operation

Browse Source
This commit is contained in:
Jakub Melka
2022-02-04 20:03:23 +01:00
parent 284f0c4db8
commit 49cab7937a
15 changed files with 302 additions and 61 deletions
Download Patch File Download Diff File Expand all files Collapse all files

58
Pdf4QtLib/sources/pdfcolorspaces.cpp
View File

@ -218,7 +218,8 @@ QImage PDFAbstractColorSpace::getImage(const PDFImageData& imageData,
const PDFImageData& softMask,
const PDFCMS* cms,
RenderingIntent intent,
PDFRenderErrorReporter* reporter) const
PDFRenderErrorReporter* reporter,
const PDFOperationControl* operationControl) const
{
if (imageData.isValid())
{
@ -249,6 +250,12 @@ QImage PDFAbstractColorSpace::getImage(const PDFImageData& imageData,
auto transformPixelLine = [&](unsigned int i)
{
// Is operation being cancelled?
if (PDFOperationControl::isOperationCancelled(operationControl))
{
return;
}
try
{
PDFBitReader reader(&imageData.getData(), imageData.getBitsPerComponent());
@ -260,21 +267,27 @@ QImage PDFAbstractColorSpace::getImage(const PDFImageData& imageData,
std::vector<float> inputColors(imageWidth * componentCount, 0.0f);
auto itInputColor = inputColors.begin();
for (unsigned int j = 0; j < imageData.getWidth(); ++j)
{
for (unsigned int k = 0; k < componentCount; ++k)
{
PDFReal value = reader.read();
// Interpolate value, if it is not empty
if (!decode.empty())
if (!decode.empty())
{
// Interpolate value
for (unsigned int j = 0; j < imageData.getWidth(); ++j)
{
for (unsigned int k = 0; k < componentCount; ++k)
{
PDFReal value = reader.read();
*itInputColor++ = interpolate(value, 0.0, max, decode[2 * k], decode[2 * k + 1]);
}
else
{
*itInputColor++ = value * coefficient;
}
}
}
else
{
// Just read all values and multiply them with coefficient
const unsigned int pixelCount = imageData.getWidth() * componentCount;
for (unsigned int j = 0; j < pixelCount; ++j)
{
PDFReal value = reader.read();
*itInputColor++ = value * coefficient;
}
}
@ -334,6 +347,12 @@ QImage PDFAbstractColorSpace::getImage(const PDFImageData& imageData,
auto transformPixelLine = [&](unsigned int i)
{
// Is operation being cancelled?
if (PDFOperationControl::isOperationCancelled(operationControl))
{
return;
}
try
{
PDFBitReader reader(&imageData.getData(), imageData.getBitsPerComponent());
@ -1872,7 +1891,8 @@ QImage PDFIndexedColorSpace::getImage(const PDFImageData& imageData,
const PDFImageData& softMask,
const PDFCMS* cms,
RenderingIntent intent,
PDFRenderErrorReporter* reporter) const
PDFRenderErrorReporter* reporter,
const PDFOperationControl* operationControl) const
{
if (imageData.isValid())
{
@ -1898,6 +1918,12 @@ QImage PDFIndexedColorSpace::getImage(const PDFImageData& imageData,
for (unsigned int i = 0, rowCount = imageData.getHeight(); i < rowCount; ++i)
{
// Is operation being cancelled?
if (PDFOperationControl::isOperationCancelled(operationControl))
{
throw PDFRendererException(RenderErrorType::Error, PDFTranslationContext::tr("Operation cancelled!"));
}
reader.seek(i * imageData.getStride());
unsigned char* outputLine = image.scanLine(i);
@ -1945,6 +1971,12 @@ QImage PDFIndexedColorSpace::getImage(const PDFImageData& imageData,
for (unsigned int i = 0, rowCount = imageData.getHeight(); i < rowCount; ++i)
{
// Is operation being cancelled?
if (PDFOperationControl::isOperationCancelled(operationControl))
{
throw PDFRendererException(RenderErrorType::Error, PDFTranslationContext::tr("Operation cancelled!"));
}
reader.seek(i * imageData.getStride());
unsigned char* outputLine = image.scanLine(i);
unsigned char* alphaLine = alphaMask.scanLine(i);