diff options
Diffstat (limited to 'media-gfx/kxstitch/files/kxstitch-2.1.1-imagemagick-fix.patch')
-rw-r--r-- | media-gfx/kxstitch/files/kxstitch-2.1.1-imagemagick-fix.patch | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/media-gfx/kxstitch/files/kxstitch-2.1.1-imagemagick-fix.patch b/media-gfx/kxstitch/files/kxstitch-2.1.1-imagemagick-fix.patch new file mode 100644 index 000000000000..bf8c5e14096b --- /dev/null +++ b/media-gfx/kxstitch/files/kxstitch-2.1.1-imagemagick-fix.patch @@ -0,0 +1,99 @@ +From 75a129d3c2f21914a47b970df822e485aca625ac Mon Sep 17 00:00:00 2001 +From: Steve Allewell <steve.allewell@gmail.com> +Date: Sun, 11 Nov 2018 15:48:50 +0000 +Subject: Fix for importing images for V6 of ImageMagick + +The getPixelColor in V6 of ImageMagick does not appear to return the +same information as in V7, consequently importing images has resulted in +a black image when using V6 of ImageMagick. This fix reverts the change +made in commit 295773f44bfda1227d85edf065a8de14dc889159 when using V6. + +Big thanks to Sean Enck for reporting and helping diagnose the problem. +--- + src/ImportImageDlg.cpp | 16 ++++++++++++++++ + src/MainWindow.cpp | 17 +++++++++++++++++ + 2 files changed, 33 insertions(+) + +diff --git a/src/ImportImageDlg.cpp b/src/ImportImageDlg.cpp +index e6396c6..340ff1d 100644 +--- a/src/ImportImageDlg.cpp ++++ b/src/ImportImageDlg.cpp +@@ -391,9 +391,21 @@ void ImportImageDlg::renderPixmap() + QProgressDialog progress(i18n("Rendering preview"), i18n("Cancel"), 0, pixelCount, this); + progress.setWindowModality(Qt::WindowModal); + ++/* ++ * ImageMagick prior to V7 used matte (opacity) to determine if an image has transparency. ++ * 0.0 for transparent to 1.0 for opaque ++ * ++ * ImageMagick V7 now uses alpha (transparency). ++ * 1.0 for transparent to 0.0 for opaque ++ * ++ * Access to pixels has changed too, V7 can use pixelColor to access the color of a particular ++ * pixel, but although this was available in V6, it doesn't appear to produce the same result ++ * and has resulted in black images when importing. ++ */ + #if MagickLibVersion < 0x700 + bool hasTransparency = m_convertedImage.matte(); + double transparent = 1.0; ++ const Magick::PixelPacket *pixels = m_convertedImage.getConstPixels(0, 0, width, height); + #else + bool hasTransparency = m_convertedImage.alpha(); + double transparent = 0.0; +@@ -408,7 +420,11 @@ void ImportImageDlg::renderPixmap() + } + + for (int dx = 0 ; dx < width ; dx++) { ++#if MagickLibVersion < 0x700 ++ Magick::ColorRGB rgb = Magick::Color(*pixels++); ++#else + Magick::ColorRGB rgb = m_convertedImage.pixelColor(dx, dy); ++#endif + + if (hasTransparency && (rgb.alpha() == transparent)) { + //ignore this pixel as it is transparent +diff --git a/src/MainWindow.cpp b/src/MainWindow.cpp +index 1f12f5b..ecf552a 100644 +--- a/src/MainWindow.cpp ++++ b/src/MainWindow.cpp +@@ -541,13 +541,26 @@ void MainWindow::convertImage(const QString &source) + + bool useFractionals = importImageDlg->useFractionals(); + ++/* ++ * ImageMagick prior to V7 used matte (opacity) to determine if an image has transparency. ++ * 0.0 for transparent to 1.0 for opaque ++ * ++ * ImageMagick V7 now uses alpha (transparency). ++ * 1.0 for transparent to 0.0 for opaque ++ * ++ * Access to pixels has changed too, V7 can use pixelColor to access the color of a particular ++ * pixel, but although this was available in V6, it doesn't appear to produce the same result ++ * and has resulted in black images when importing. ++ */ + #if MagickLibVersion < 0x700 + bool hasTransparency = convertedImage.matte(); + double transparent = 1.0; ++ const Magick::PixelPacket *pixels = convertedImage.getConstPixels(0, 0, imageWidth, imageHeight); + #else + bool hasTransparency = convertedImage.alpha(); + double transparent = 0.0; + #endif ++ + bool ignoreColor = importImageDlg->ignoreColor(); + Magick::Color ignoreColorValue = importImageDlg->ignoreColorValue(); + +@@ -579,7 +592,11 @@ void MainWindow::convertImage(const QString &source) + } + + for (int dx = 0 ; dx < imageWidth ; dx++) { ++#if MagickLibVersion < 0x700 ++ Magick::ColorRGB rgb = Magick::Color(*pixels++); // is this a memory leak ++#else + Magick::ColorRGB rgb = convertedImage.pixelColor(dx, dy); ++#endif + + if (hasTransparency && (rgb.alpha() == transparent)) { + // ignore this pixel as it is transparent +-- +cgit v1.1 |