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Remove unused ColorizePattern function.

This commit is contained in:
John Preston 2021-08-17 12:56:13 +03:00
parent 52b9a1fceb
commit ce6f9f580f
1 changed files with 0 additions and 46 deletions
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46
Telegram/SourceFiles/boxes/background_preview_box.cpp
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@ -331,52 +331,6 @@ QImage PrepareScaledNonPattern(
size);
}
QImage ColorizePattern(QImage image, QColor color) {
if (image.format() != QImage::Format_ARGB32_Premultiplied) {
image = std::move(image).convertToFormat(
QImage::Format_ARGB32_Premultiplied);
}
// Similar to style::colorizeImage.
// But style::colorizeImage takes pattern with all pixels having the
// same components value, from (0, 0, 0, 0) to (255, 255, 255, 255).
//
// While in patterns we have different value ranges, usually they are
// from (0, 0, 0, 0) to (0, 0, 0, 255), so we should use only 'alpha'.
const auto width = image.width();
const auto height = image.height();
const auto pattern = anim::shifted(color);
constexpr auto resultIntsPerPixel = 1;
const auto resultIntsPerLine = (image.bytesPerLine() >> 2);
const auto resultIntsAdded = resultIntsPerLine - width * resultIntsPerPixel;
auto resultInts = reinterpret_cast<uint32*>(image.bits());
Assert(resultIntsAdded >= 0);
Assert(image.depth() == static_cast<int>((resultIntsPerPixel * sizeof(uint32)) << 3));
Assert(image.bytesPerLine() == (resultIntsPerLine << 2));
const auto maskBytesPerPixel = (image.depth() >> 3);
const auto maskBytesPerLine = image.bytesPerLine();
const auto maskBytesAdded = maskBytesPerLine - width * maskBytesPerPixel;
// We want to read the last byte of four available.
// This is the difference with style::colorizeImage.
auto maskBytes = image.constBits() + (maskBytesPerPixel - 1);
Assert(maskBytesAdded >= 0);
Assert(image.depth() == (maskBytesPerPixel << 3));
for (auto y = 0; y != height; ++y) {
for (auto x = 0; x != width; ++x) {
auto maskOpacity = static_cast<anim::ShiftedMultiplier>(*maskBytes) + 1;
*resultInts = anim::unshifted(pattern * maskOpacity);
maskBytes += maskBytesPerPixel;
resultInts += resultIntsPerPixel;
}
maskBytes += maskBytesAdded;
resultInts += resultIntsAdded;
}
return image;
}
QImage PrepareScaledFromFull(
const QImage &image,
bool isPattern,