diff options
Diffstat (limited to 'src/gui/image/qpnghandler.cpp')
| -rw-r--r-- | src/gui/image/qpnghandler.cpp | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/src/gui/image/qpnghandler.cpp b/src/gui/image/qpnghandler.cpp index 8ae03d5d38..3655c39326 100644 --- a/src/gui/image/qpnghandler.cpp +++ b/src/gui/image/qpnghandler.cpp @@ -266,6 +266,18 @@ void setup_qt(QImage& image, png_structp png_ptr, png_infop info_ptr, QSize scal else if (g == 1) image.setColor(0, qRgba(255, 255, 255, 0)); } + } else if (bit_depth == 16 + && png_get_channels(png_ptr, info_ptr) == 1 + && !png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) { + if (image.size() != QSize(width, height) || image.format() != QImage::Format_Grayscale16) { + image = QImage(width, height, QImage::Format_Grayscale16); + if (image.isNull()) + return; + } + + png_read_update_info(png_ptr, info_ptr); + if (QSysInfo::ByteOrder == QSysInfo::LittleEndian) + png_set_swap(png_ptr); } else if (bit_depth == 16) { bool hasMask = png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS); if (!hasMask) @@ -687,7 +699,7 @@ QImage::Format QPngHandlerPrivate::readImageFormat() if (bit_depth == 1 && png_get_channels(png_ptr, info_ptr) == 1) { format = QImage::Format_Mono; } else if (bit_depth == 16) { - format = png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS) ? QImage::Format_RGBA64 : QImage::Format_RGBX64; + format = png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS) ? QImage::Format_RGBA64 : QImage::Format_Grayscale16; } else if (bit_depth == 8 && !png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) { format = QImage::Format_Grayscale8; } else { @@ -861,7 +873,8 @@ bool QPNGImageWriter::writeImage(const QImage& image, volatile int compression_i else color_type = PNG_COLOR_TYPE_PALETTE; } - else if (image.format() == QImage::Format_Grayscale8) + else if (image.format() == QImage::Format_Grayscale8 + || image.format() == QImage::Format_Grayscale16) color_type = PNG_COLOR_TYPE_GRAY; else if (image.hasAlphaChannel()) color_type = PNG_COLOR_TYPE_RGB_ALPHA; @@ -877,6 +890,7 @@ bool QPNGImageWriter::writeImage(const QImage& image, volatile int compression_i case QImage::Format_RGBX64: case QImage::Format_RGBA64: case QImage::Format_RGBA64_Premultiplied: + case QImage::Format_Grayscale16: bpc = 16; break; default: @@ -988,6 +1002,7 @@ bool QPNGImageWriter::writeImage(const QImage& image, volatile int compression_i case QImage::Format_RGBX64: case QImage::Format_RGBA64: case QImage::Format_RGBA64_Premultiplied: + case QImage::Format_Grayscale16: png_set_swap(png_ptr); break; default: @@ -1018,6 +1033,7 @@ bool QPNGImageWriter::writeImage(const QImage& image, volatile int compression_i case QImage::Format_MonoLSB: case QImage::Format_Indexed8: case QImage::Format_Grayscale8: + case QImage::Format_Grayscale16: case QImage::Format_RGB32: case QImage::Format_ARGB32: case QImage::Format_RGB888: |