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-rw-r--r--src/gui/image/image.pri4
-rw-r--r--src/gui/image/qimage.cpp95
-rw-r--r--src/gui/image/qimage.h3
-rw-r--r--src/gui/image/qimagereader.cpp2
-rw-r--r--src/gui/image/qpaintengine_pic.cpp5
-rw-r--r--src/gui/image/qpicture.cpp49
-rw-r--r--src/gui/image/qpixmap.cpp28
-rw-r--r--src/gui/image/qpixmap.h4
-rw-r--r--src/gui/image/qpixmap_x11.cpp30
-rw-r--r--src/gui/image/qpixmap_x11_p.h12
-rw-r--r--src/gui/image/qpixmapfilter.cpp4
-rw-r--r--src/gui/image/qpnghandler.cpp137
12 files changed, 224 insertions, 149 deletions
diff --git a/src/gui/image/image.pri b/src/gui/image/image.pri
index b67be55..8d75fdd 100644
--- a/src/gui/image/image.pri
+++ b/src/gui/image/image.pri
@@ -96,6 +96,7 @@ SOURCES += \
unix:LIBS_PRIVATE += -lpng
win32:LIBS += libpng.lib
} else {
+ DEFINES *= QT_USE_BUNDLED_LIBPNG
!isEqual(QT_ARCH, i386):!isEqual(QT_ARCH, x86_64):DEFINES += PNG_NO_ASSEMBLER_CODE
INCLUDEPATH += ../3rdparty/libpng ../3rdparty/zlib
SOURCES += ../3rdparty/libpng/png.c \
@@ -112,8 +113,7 @@ SOURCES += \
../3rdparty/libpng/pngwio.c \
../3rdparty/libpng/pngwrite.c \
../3rdparty/libpng/pngwtran.c \
- ../3rdparty/libpng/pngwutil.c \
- ../3rdparty/libpng/pnggccrd.c
+ ../3rdparty/libpng/pngwutil.c
}
} else {
DEFINES *= QT_NO_IMAGEFORMAT_PNG
diff --git a/src/gui/image/qimage.cpp b/src/gui/image/qimage.cpp
index 4f5efa1..94307de 100644
--- a/src/gui/image/qimage.cpp
+++ b/src/gui/image/qimage.cpp
@@ -480,9 +480,12 @@ bool QImageData::checkForAlphaPixels() const
\row
\o Low-level information
\o
+
The depth() function returns the depth of the image. The supported
- depths are 1 (monochrome), 8 and 32 (for more information see the
- \l {QImage#Image Formats}{Image Formats} section).
+ depths are 1 (monochrome), 8, 16, 24 and 32 bits. The
+ bitPlaneCount() function tells how many of those bits that are
+ used. For more information see the
+ \l {QImage#Image Formats}{Image Formats} section.
The format(), bytesPerLine(), and byteCount() functions provide
low-level information about the data stored in the image.
@@ -707,7 +710,7 @@ bool QImageData::checkForAlphaPixels() const
packed with the less significant bit (LSB) first.
\value Format_Indexed8 The image is stored using 8-bit indexes
- into a colormap.
+ into a colormap.
\value Format_RGB32 The image is stored using a 32-bit RGB format (0xffRRGGBB).
@@ -1580,12 +1583,12 @@ QRect QImage::rect() const
/*!
Returns the depth of the image.
- The image depth is the number of bits used to encode a single
+ The image depth is the number of bits used to store a single
pixel, also called bits per pixel (bpp).
The supported depths are 1, 8, 16, 24 and 32.
- \sa convertToFormat(), {QImage#Image Formats}{Image Formats},
+ \sa bitPlaneCount(), convertToFormat(), {QImage#Image Formats}{Image Formats},
{QImage#Image Information}{Image Information}
*/
@@ -1835,7 +1838,7 @@ void QImage::setColor(int i, QRgb c)
qAlpha() to access the pixels.
\sa bytesPerLine(), bits(), {QImage#Pixel Manipulation}{Pixel
- Manipulation}
+ Manipulation}, constScanLine()
*/
uchar *QImage::scanLine(int i)
{
@@ -1865,6 +1868,28 @@ const uchar *QImage::scanLine(int i) const
/*!
+ Returns a pointer to the pixel data at the scanline with index \a
+ i. The first scanline is at index 0.
+
+ The scanline data is aligned on a 32-bit boundary.
+
+ Note that QImage uses \l{Implicit Data Sharing} {implicit data
+ sharing}, but this function does \e not perform a deep copy of the
+ shared pixel data, because the returned data is const.
+
+ \sa scanLine(), constBits()
+ \since 4.7
+*/
+const uchar *QImage::constScanLine(int i) const
+{
+ if (!d)
+ return 0;
+
+ Q_ASSERT(i >= 0 && i < height());
+ return d->data + i * d->bytes_per_line;
+}
+
+/*!
Returns a pointer to the first pixel data. This is equivalent to
scanLine(0).
@@ -1873,7 +1898,7 @@ const uchar *QImage::scanLine(int i) const
data, thus ensuring that this QImage is the only one using the
current return value.
- \sa scanLine(), byteCount()
+ \sa scanLine(), byteCount(), constBits()
*/
uchar *QImage::bits()
{
@@ -1901,6 +1926,20 @@ const uchar *QImage::bits() const
}
+/*!
+ Returns a pointer to the first pixel data.
+
+ Note that QImage uses \l{Implicit Data Sharing} {implicit data
+ sharing}, but this function does \e not perform a deep copy of the
+ shared pixel data, because the returned data is const.
+
+ \sa bits(), constScanLine()
+ \since 4.7
+*/
+const uchar *QImage::constBits() const
+{
+ return d ? d->data : 0;
+}
/*!
\fn void QImage::reset()
@@ -5812,6 +5851,48 @@ bool QImage::hasAlphaChannel() const
}
+/*!
+ \since 4.7
+ Returns the number of bit planes in the image.
+
+ The number of bit planes is the number of bits of color and
+ transparency information for each pixel. This is different from
+ (i.e. smaller than) the depth when the image format contains
+ unused bits.
+
+ \sa depth(), format(), {QImage#Image Formats}{Image Formats}
+*/
+int QImage::bitPlaneCount() const
+{
+ if (!d)
+ return 0;
+ int bpc = 0;
+ switch (d->format) {
+ case QImage::Format_Invalid:
+ break;
+ case QImage::Format_RGB32:
+ bpc = 24;
+ break;
+ case QImage::Format_RGB666:
+ bpc = 18;
+ break;
+ case QImage::Format_RGB555:
+ bpc = 15;
+ break;
+ case QImage::Format_ARGB8555_Premultiplied:
+ bpc = 23;
+ break;
+ case QImage::Format_RGB444:
+ bpc = 12;
+ break;
+ default:
+ bpc = depthForFormat(d->format);
+ break;
+ }
+ return bpc;
+}
+
+
#ifdef QT3_SUPPORT
#if defined(Q_WS_X11)
QT_BEGIN_INCLUDE_NAMESPACE
diff --git a/src/gui/image/qimage.h b/src/gui/image/qimage.h
index ac973a1..896061f 100644
--- a/src/gui/image/qimage.h
+++ b/src/gui/image/qimage.h
@@ -169,6 +169,7 @@ public:
QT_DEPRECATED int numColors() const;
#endif
int colorCount() const;
+ int bitPlaneCount() const;
QRgb color(int i) const;
void setColor(int i, QRgb c);
@@ -182,6 +183,7 @@ public:
uchar *bits();
const uchar *bits() const;
+ const uchar *constBits() const;
#ifdef QT_DEPRECATED
QT_DEPRECATED int numBytes() const;
#endif
@@ -189,6 +191,7 @@ public:
uchar *scanLine(int);
const uchar *scanLine(int) const;
+ const uchar *constScanLine(int) const;
int bytesPerLine() const;
bool valid(int x, int y) const;
diff --git a/src/gui/image/qimagereader.cpp b/src/gui/image/qimagereader.cpp
index 9320cfc..27f9627 100644
--- a/src/gui/image/qimagereader.cpp
+++ b/src/gui/image/qimagereader.cpp
@@ -503,7 +503,7 @@ QImageReaderPrivate::~QImageReaderPrivate()
bool QImageReaderPrivate::initHandler()
{
// check some preconditions
- if (!device || (!deleteDevice && !device->isOpen())) {
+ if (!device || (!deleteDevice && !device->isOpen() && !device->open(QIODevice::ReadOnly))) {
imageReaderError = QImageReader::DeviceError;
errorString = QLatin1String(QT_TRANSLATE_NOOP(QImageReader, "Invalid device"));
return false;
diff --git a/src/gui/image/qpaintengine_pic.cpp b/src/gui/image/qpaintengine_pic.cpp
index 1aeb524..029154b 100644
--- a/src/gui/image/qpaintengine_pic.cpp
+++ b/src/gui/image/qpaintengine_pic.cpp
@@ -486,8 +486,11 @@ void QPicturePaintEngine::drawTextItem(const QPointF &p , const QTextItem &ti)
qDebug() << " -> drawTextItem():" << p << ti.text();
#endif
+ const QTextItemInt &si = static_cast<const QTextItemInt &>(ti);
+ if (si.chars == 0)
+ QPaintEngine::drawTextItem(p, ti); // Draw as path
+
if (d->pic_d->formatMajor >= 9) {
- const QTextItemInt &si = static_cast<const QTextItemInt &>(ti);
int pos;
SERIALIZE_CMD(QPicturePrivate::PdcDrawTextItem);
QFont fnt = ti.font();
diff --git a/src/gui/image/qpicture.cpp b/src/gui/image/qpicture.cpp
index fb70e36..3220a67 100644
--- a/src/gui/image/qpicture.cpp
+++ b/src/gui/image/qpicture.cpp
@@ -440,36 +440,6 @@ bool QPicture::play(QPainter *painter)
return true; // no end-command
}
-
-//
-// QFakeDevice is used to create fonts with a custom DPI
-//
-class QFakeDevice : public QPaintDevice
-{
-public:
- QFakeDevice() { dpi_x = qt_defaultDpiX(); dpi_y = qt_defaultDpiY(); }
- void setDpiX(int dpi) { dpi_x = dpi; }
- void setDpiY(int dpi) { dpi_y = dpi; }
- QPaintEngine *paintEngine() const { return 0; }
- int metric(PaintDeviceMetric m) const
- {
- switch(m) {
- case PdmPhysicalDpiX:
- case PdmDpiX:
- return dpi_x;
- case PdmPhysicalDpiY:
- case PdmDpiY:
- return dpi_y;
- default:
- return QPaintDevice::metric(m);
- }
- }
-
-private:
- int dpi_x;
- int dpi_y;
-};
-
/*!
\internal
Iterates over the internal picture data and draws the picture using
@@ -679,30 +649,29 @@ bool QPicture::exec(QPainter *painter, QDataStream &s, int nrecords)
if (d->formatMajor >= 9) {
s >> dbl;
- QFont fnt(font);
- if (dbl != 1.0) {
- QFakeDevice fake;
- fake.setDpiX(qRound(dbl*qt_defaultDpiX()));
- fake.setDpiY(qRound(dbl*qt_defaultDpiY()));
- fnt = QFont(font, &fake);
- }
+ QFont fnt(font, painter->device());
+
+ qreal scale = painter->device()->logicalDpiY() / (dbl*qt_defaultDpiY());
+ painter->save();
+ painter->scale(1/scale, 1/scale);
qreal justificationWidth;
s >> justificationWidth;
int flags = Qt::TextSingleLine | Qt::TextDontClip | Qt::TextForceLeftToRight;
- QSizeF size(1, 1);
+ QSizeF size(scale, scale);
if (justificationWidth > 0) {
- size.setWidth(justificationWidth);
+ size.setWidth(justificationWidth*scale);
flags |= Qt::TextJustificationForced;
flags |= Qt::AlignJustify;
}
QFontMetrics fm(fnt);
- QPointF pt(p.x(), p.y() - fm.ascent());
+ QPointF pt(p.x()*scale, p.y()*scale - fm.ascent());
qt_format_text(fnt, QRectF(pt, size), flags, /*opt*/0,
str, /*brect=*/0, /*tabstops=*/0, /*...*/0, /*tabarraylen=*/0, painter);
+ painter->restore();
} else {
qt_format_text(font, QRectF(p, QSizeF(1, 1)), Qt::TextSingleLine | Qt::TextDontClip, /*opt*/0,
str, /*brect=*/0, /*tabstops=*/0, /*...*/0, /*tabarraylen=*/0, painter);
diff --git a/src/gui/image/qpixmap.cpp b/src/gui/image/qpixmap.cpp
index 7b225eb..474cd2e 100644
--- a/src/gui/image/qpixmap.cpp
+++ b/src/gui/image/qpixmap.cpp
@@ -1071,6 +1071,9 @@ QPixmap QPixmap::grabWidget(QWidget * widget, const QRect &rect)
if (widget->testAttribute(Qt::WA_PendingResizeEvent) || !widget->testAttribute(Qt::WA_WState_Created))
sendResizeEvents(widget);
+ widget->d_func()->prepareToRender(QRegion(),
+ QWidget::DrawWindowBackground | QWidget::DrawChildren | QWidget::IgnoreMask);
+
QRect r(rect);
if (r.width() < 0)
r.setWidth(widget->width() - rect.x());
@@ -1081,8 +1084,8 @@ QPixmap QPixmap::grabWidget(QWidget * widget, const QRect &rect)
return QPixmap();
QPixmap res(r.size());
- widget->render(&res, QPoint(), r,
- QWidget::DrawWindowBackground | QWidget::DrawChildren | QWidget::IgnoreMask);
+ widget->d_func()->render(&res, QPoint(), r, QWidget::DrawWindowBackground
+ | QWidget::DrawChildren | QWidget::IgnoreMask, true);
return res;
}
@@ -1363,10 +1366,27 @@ void QPixmap::deref()
*/
/*!
- \fn bool QPixmap::convertFromImage(const QImage &image, Qt::ImageConversionFlags flags)
+ Replaces this pixmap's data with the given \a image using the
+ specified \a flags to control the conversion. The \a flags
+ argument is a bitwise-OR of the \l{Qt::ImageConversionFlags}.
+ Passing 0 for \a flags sets all the default options. Returns true
+ if the result is that this pixmap is not null.
- Use the static fromImage() function instead.
+ Note: this function was part of Qt 3 support in Qt 4.6 and earlier.
+ It has been promoted to official API status in 4.7 to support updating
+ the pixmap's image without creating a new QPixmap as fromImage() would.
+
+ \sa fromImage()
+ \since 4.7
*/
+bool QPixmap::convertFromImage(const QImage &image, Qt::ImageConversionFlags flags)
+{
+ if (image.isNull() || !data)
+ *this = QPixmap::fromImage(image, flags);
+ else
+ data->fromImage(image, flags);
+ return !isNull();
+}
/*!
\fn QPixmap QPixmap::xForm(const QMatrix &matrix) const
diff --git a/src/gui/image/qpixmap.h b/src/gui/image/qpixmap.h
index 46363f0..180af3b 100644
--- a/src/gui/image/qpixmap.h
+++ b/src/gui/image/qpixmap.h
@@ -141,6 +141,8 @@ public:
bool save(const QString& fileName, const char* format = 0, int quality = -1) const;
bool save(QIODevice* device, const char* format = 0, int quality = -1) const;
+ bool convertFromImage(const QImage &img, Qt::ImageConversionFlags flags = Qt::AutoColor);
+
#if defined(Q_WS_WIN)
enum HBitmapFormat {
NoAlpha,
@@ -224,8 +226,6 @@ public:
QT3_SUPPORT QPixmap &operator=(const QImage &);
inline QT3_SUPPORT QImage convertToImage() const { return toImage(); }
QT3_SUPPORT bool convertFromImage(const QImage &, ColorMode mode);
- QT3_SUPPORT bool convertFromImage(const QImage &img, Qt::ImageConversionFlags flags = Qt::AutoColor)
- { (*this) = fromImage(img, flags); return !isNull(); }
inline QT3_SUPPORT operator QImage() const { return toImage(); }
inline QT3_SUPPORT QPixmap xForm(const QMatrix &matrix) const { return transformed(QTransform(matrix)); }
inline QT3_SUPPORT bool selfMask() const { return false; }
diff --git a/src/gui/image/qpixmap_x11.cpp b/src/gui/image/qpixmap_x11.cpp
index e1e8a0d..5a882af 100644
--- a/src/gui/image/qpixmap_x11.cpp
+++ b/src/gui/image/qpixmap_x11.cpp
@@ -314,8 +314,8 @@ static int qt_pixmap_serial = 0;
int Q_GUI_EXPORT qt_x11_preferred_pixmap_depth = 0;
QX11PixmapData::QX11PixmapData(PixelType type)
- : QPixmapData(type, X11Class), hd(0),
- flags(Uninitialized), x11_mask(0), picture(0), mask_picture(0), hd2(0), gl_surface(0),
+ : QPixmapData(type, X11Class), gl_surface(0), hd(0),
+ flags(Uninitialized), x11_mask(0), picture(0), mask_picture(0), hd2(0),
share_mode(QPixmap::ImplicitlyShared), pengine(0)
{
}
@@ -1142,7 +1142,7 @@ void QX11PixmapData::fromImage(const QImage &img,
}
}
-void QX11PixmapData::bitmapFromImage(const QImage &image)
+Qt::HANDLE QX11PixmapData::createBitmapFromImage(const QImage &image)
{
QImage img = image.convertToFormat(QImage::Format_MonoLSB);
const QRgb c0 = QColor(Qt::black).rgb();
@@ -1155,10 +1155,8 @@ void QX11PixmapData::bitmapFromImage(const QImage &image)
char *bits;
uchar *tmp_bits;
- w = img.width();
- h = img.height();
- d = 1;
- is_null = (w <= 0 || h <= 0);
+ int w = img.width();
+ int h = img.height();
int bpl = (w + 7) / 8;
int ibpl = img.bytesPerLine();
if (bpl != ibpl) {
@@ -1177,18 +1175,26 @@ void QX11PixmapData::bitmapFromImage(const QImage &image)
bits = (char *)img.bits();
tmp_bits = 0;
}
- hd = (Qt::HANDLE)XCreateBitmapFromData(xinfo.display(),
- RootWindow(xinfo.display(), xinfo.screen()),
+ Qt::HANDLE hd = (Qt::HANDLE)XCreateBitmapFromData(X11->display,
+ QX11Info::appRootWindow(),
bits, w, h);
+ if (tmp_bits) // Avoid purify complaint
+ delete [] tmp_bits;
+ return hd;
+}
+void QX11PixmapData::bitmapFromImage(const QImage &image)
+{
+ w = image.width();
+ h = image.height();
+ d = 1;
+ is_null = (w <= 0 || h <= 0);
+ hd = createBitmapFromImage(image);
#ifndef QT_NO_XRENDER
if (X11->use_xrender)
picture = XRenderCreatePicture(X11->display, hd,
XRenderFindStandardFormat(X11->display, PictStandardA1), 0, 0);
#endif // QT_NO_XRENDER
-
- if (tmp_bits) // Avoid purify complaint
- delete [] tmp_bits;
}
void QX11PixmapData::fill(const QColor &fillColor)
diff --git a/src/gui/image/qpixmap_x11_p.h b/src/gui/image/qpixmap_x11_p.h
index 20fb654..7575838 100644
--- a/src/gui/image/qpixmap_x11_p.h
+++ b/src/gui/image/qpixmap_x11_p.h
@@ -92,6 +92,13 @@ public:
Qt::HANDLE handle() const { return hd; }
Qt::HANDLE x11ConvertToDefaultDepth();
+ static Qt::HANDLE createBitmapFromImage(const QImage &image);
+
+ void* gl_surface;
+#ifndef QT_NO_XRENDER
+ void convertToARGB32(bool preserveContents = true);
+#endif
+
protected:
int metric(QPaintDevice::PaintDeviceMetric metric) const;
@@ -103,6 +110,7 @@ private:
friend class QRasterWindowSurface;
friend class QGLContextPrivate; // Needs to access xinfo, gl_surface & flags
friend class QEglContext; // Needs gl_surface
+ friend class QGLContext; // Needs gl_surface
friend class QX11GLPixmapData; // Needs gl_surface
friend bool qt_createEGLSurfaceForPixmap(QPixmapData*, bool); // Needs gl_surface
@@ -128,10 +136,6 @@ private:
Qt::HANDLE picture;
Qt::HANDLE mask_picture;
Qt::HANDLE hd2; // sorted in the default display depth
- Qt::HANDLE gl_surface;
-#ifndef QT_NO_XRENDER
- void convertToARGB32(bool preserveContents = true);
-#endif
QPixmap::ShareMode share_mode;
QX11PaintEngine *pengine;
diff --git a/src/gui/image/qpixmapfilter.cpp b/src/gui/image/qpixmapfilter.cpp
index c605880..5355ad3 100644
--- a/src/gui/image/qpixmapfilter.cpp
+++ b/src/gui/image/qpixmapfilter.cpp
@@ -726,7 +726,7 @@ void expblur(QImage &img, qreal radius, bool improvedQuality = false, int transp
int img_height = img.height();
for (int row = 0; row < img_height; ++row) {
- for (int i = 0; i <= improvedQuality; ++i)
+ for (int i = 0; i <= int(improvedQuality); ++i)
qt_blurrow<aprec, zprec, alphaOnly>(img, row, alpha);
}
@@ -759,7 +759,7 @@ void expblur(QImage &img, qreal radius, bool improvedQuality = false, int transp
img_height = temp.height();
for (int row = 0; row < img_height; ++row) {
- for (int i = 0; i <= improvedQuality; ++i)
+ for (int i = 0; i <= int(improvedQuality); ++i)
qt_blurrow<aprec, zprec, alphaOnly>(temp, row, alpha);
}
diff --git a/src/gui/image/qpnghandler.cpp b/src/gui/image/qpnghandler.cpp
index d5406cb..dd31834 100644
--- a/src/gui/image/qpnghandler.cpp
+++ b/src/gui/image/qpnghandler.cpp
@@ -50,8 +50,13 @@
#include <qvariant.h>
#include <qvector.h>
+#ifdef QT_USE_BUNDLED_LIBPNG
+#include <../../3rdparty/libpng/png.h>
+#include <../../3rdparty/libpng/pngconf.h>
+#else
#include <png.h>
#include <pngconf.h>
+#endif
#ifdef Q_OS_WINCE
#define CALLBACK_CALL_TYPE __cdecl
@@ -162,11 +167,16 @@ void setup_qt(QImage& image, png_structp png_ptr, png_infop info_ptr, float scre
png_uint_32 height;
int bit_depth;
int color_type;
+ png_bytep trans_alpha = 0;
+ png_color_16p trans_color_p = 0;
+ int num_trans;
+ png_colorp palette = 0;
+ int num_palette;
png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, 0, 0, 0);
if (color_type == PNG_COLOR_TYPE_GRAY) {
// Black & White or 8-bit grayscale
- if (bit_depth == 1 && info_ptr->channels == 1) {
+ if (bit_depth == 1 && png_get_channels(png_ptr, info_ptr) == 1) {
png_set_invert_mono(png_ptr);
png_read_update_info(png_ptr, info_ptr);
if (image.size() != QSize(width, height) || image.format() != QImage::Format_Mono) {
@@ -207,20 +217,16 @@ void setup_qt(QImage& image, png_structp png_ptr, png_infop info_ptr, float scre
int c = i*255/(ncols-1);
image.setColor(i, qRgba(c,c,c,0xff));
}
- if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) {
-#if PNG_LIBPNG_VER_MAJOR < 1 || (PNG_LIBPNG_VER_MAJOR == 1 && PNG_LIBPNG_VER_MINOR < 4)
- const int g = info_ptr->trans_values.gray;
-#else
- const int g = info_ptr->trans_color.gray;
-#endif
+ if (png_get_tRNS(png_ptr, info_ptr, &trans_alpha, &num_trans, &trans_color_p) && trans_color_p) {
+ const int g = trans_color_p->gray;
if (g < ncols) {
image.setColor(g, 0);
}
}
}
} else if (color_type == PNG_COLOR_TYPE_PALETTE
- && png_get_valid(png_ptr, info_ptr, PNG_INFO_PLTE)
- && info_ptr->num_palette <= 256)
+ && png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette)
+ && num_palette <= 256)
{
// 1-bit and 8-bit color
if (bit_depth != 1)
@@ -233,29 +239,26 @@ void setup_qt(QImage& image, png_structp png_ptr, png_infop info_ptr, float scre
if (image.isNull())
return;
}
- image.setColorCount(info_ptr->num_palette);
+ png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette);
+ image.setColorCount(num_palette);
int i = 0;
- if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) {
- while (i < info_ptr->num_trans) {
+ if (png_get_tRNS(png_ptr, info_ptr, &trans_alpha, &num_trans, &trans_color_p) && trans_alpha) {
+ while (i < num_trans) {
image.setColor(i, qRgba(
- info_ptr->palette[i].red,
- info_ptr->palette[i].green,
- info_ptr->palette[i].blue,
-#if PNG_LIBPNG_VER_MAJOR < 1 || (PNG_LIBPNG_VER_MAJOR == 1 && PNG_LIBPNG_VER_MINOR < 4)
- info_ptr->trans[i]
-#else
- info_ptr->trans_alpha[i]
-#endif
+ palette[i].red,
+ palette[i].green,
+ palette[i].blue,
+ trans_alpha[i]
)
);
i++;
}
}
- while (i < info_ptr->num_palette) {
+ while (i < num_palette) {
image.setColor(i, qRgba(
- info_ptr->palette[i].red,
- info_ptr->palette[i].green,
- info_ptr->palette[i].blue,
+ palette[i].red,
+ palette[i].green,
+ palette[i].blue,
0xff
)
);
@@ -531,33 +534,36 @@ QImage::Format QPngHandlerPrivate::readImageFormat()
QImage::Format format = QImage::Format_Invalid;
png_uint_32 width, height;
int bit_depth, color_type;
- if (info_ptr->color_type == PNG_COLOR_TYPE_GRAY) {
+ png_colorp palette;
+ int num_palette;
+ png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, 0, 0, 0);
+ if (color_type == PNG_COLOR_TYPE_GRAY) {
// Black & White or 8-bit grayscale
- if (info_ptr->bit_depth == 1 && info_ptr->channels == 1) {
+ if (bit_depth == 1 && png_get_channels(png_ptr, info_ptr) == 1) {
format = QImage::Format_Mono;
- } else if (info_ptr->bit_depth == 16 && png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) {
+ } else if (bit_depth == 16 && png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) {
format = QImage::Format_ARGB32;
} else {
format = QImage::Format_Indexed8;
}
- } else if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE
- && png_get_valid(png_ptr, info_ptr, PNG_INFO_PLTE)
- && info_ptr->num_palette <= 256)
+ } else if (color_type == PNG_COLOR_TYPE_PALETTE
+ && png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette)
+ && num_palette <= 256)
{
// 1-bit and 8-bit color
- if (info_ptr->bit_depth != 1)
+ if (bit_depth != 1)
png_set_packing(png_ptr);
png_read_update_info(png_ptr, info_ptr);
png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, 0, 0, 0);
format = bit_depth == 1 ? QImage::Format_Mono : QImage::Format_Indexed8;
} else {
// 32-bit
- if (info_ptr->bit_depth == 16)
+ if (bit_depth == 16)
png_set_strip_16(png_ptr);
format = QImage::Format_ARGB32;
// Only add filler if no alpha, or we can get 5 channel data.
- if (!(info_ptr->color_type & PNG_COLOR_MASK_ALPHA)
+ if (!(color_type & PNG_COLOR_MASK_ALPHA)
&& !png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) {
// We want 4 bytes, but it isn't an alpha channel
format = QImage::Format_RGB32;
@@ -648,7 +654,7 @@ static void set_text(const QImage &image, png_structp png_ptr, png_infop info_pt
text_ptr[i].text = qstrdup(value.constData());
text_ptr[i].text_length = 0;
text_ptr[i].itxt_length = value.size();
- text_ptr[i].lang = "UTF-8";
+ text_ptr[i].lang = const_cast<char*>("UTF-8");
text_ptr[i].lang_key = qstrdup(it.key().toUtf8().constData());
#endif
++i;
@@ -735,64 +741,51 @@ bool Q_INTERNAL_WIN_NO_THROW QPNGImageWriter::writeImage(const QImage& image_in,
png_set_compression_level(png_ptr, quality);
}
- if (gamma != 0.0) {
- png_set_gAMA(png_ptr, info_ptr, 1.0/gamma);
- }
-
png_set_write_fn(png_ptr, (void*)this, qpiw_write_fn, qpiw_flush_fn);
- info_ptr->channels =
- (image.depth() == 32)
- ? (image.format() == QImage::Format_RGB32 ? 3 : 4)
- : 1;
-
png_set_IHDR(png_ptr, info_ptr, image.width(), image.height(),
image.depth() == 1 ? 1 : 8 /* per channel */,
image.depth() == 32
? image.format() == QImage::Format_RGB32
? PNG_COLOR_TYPE_RGB
: PNG_COLOR_TYPE_RGB_ALPHA
- : PNG_COLOR_TYPE_PALETTE, 0, 0, 0);
+ : PNG_COLOR_TYPE_PALETTE, 0, 0, 0); // also sets #channels
+ if (gamma != 0.0) {
+ png_set_gAMA(png_ptr, info_ptr, 1.0/gamma);
+ }
- //png_set_sBIT(png_ptr, info_ptr, 8);
- info_ptr->sig_bit.red = 8;
- info_ptr->sig_bit.green = 8;
- info_ptr->sig_bit.blue = 8;
+ png_color_8 sig_bit;
+ sig_bit.red = 8;
+ sig_bit.green = 8;
+ sig_bit.blue = 8;
+ sig_bit.alpha = image.hasAlphaChannel() ? 8 : 0;
+ png_set_sBIT(png_ptr, info_ptr, &sig_bit);
if (image.format() == QImage::Format_MonoLSB)
png_set_packswap(png_ptr);
- png_colorp palette = 0;
- png_bytep copy_trans = 0;
if (image.colorCount()) {
// Paletted
- int num_palette = image.colorCount();
- palette = new png_color[num_palette];
- png_set_PLTE(png_ptr, info_ptr, palette, num_palette);
- int* trans = new int[num_palette];
+ int num_palette = qMin(256, image.colorCount());
+ png_color palette[256];
+ png_byte trans[256];
int num_trans = 0;
for (int i=0; i<num_palette; i++) {
- QRgb rgb=image.color(i);
- info_ptr->palette[i].red = qRed(rgb);
- info_ptr->palette[i].green = qGreen(rgb);
- info_ptr->palette[i].blue = qBlue(rgb);
- trans[i] = rgb >> 24;
+ QRgb rgba=image.color(i);
+ palette[i].red = qRed(rgba);
+ palette[i].green = qGreen(rgba);
+ palette[i].blue = qBlue(rgba);
+ trans[i] = qAlpha(rgba);
if (trans[i] < 255) {
num_trans = i+1;
}
}
+ png_set_PLTE(png_ptr, info_ptr, palette, num_palette);
+
if (num_trans) {
- copy_trans = new png_byte[num_trans];
- for (int i=0; i<num_trans; i++)
- copy_trans[i] = trans[i];
- png_set_tRNS(png_ptr, info_ptr, copy_trans, num_trans, 0);
+ png_set_tRNS(png_ptr, info_ptr, trans, num_trans, 0);
}
- delete [] trans;
- }
-
- if (image.format() != QImage::Format_RGB32) {
- info_ptr->sig_bit.alpha = 8;
}
// Swap ARGB to RGBA (normal PNG format) before saving on
@@ -868,11 +861,6 @@ bool Q_INTERNAL_WIN_NO_THROW QPNGImageWriter::writeImage(const QImage& image_in,
png_write_end(png_ptr, info_ptr);
frames_written++;
- if (palette)
- delete [] palette;
- if (copy_trans)
- delete [] copy_trans;
-
png_destroy_write_struct(&png_ptr, &info_ptr);
return true;
@@ -958,7 +946,8 @@ QVariant QPngHandler::option(ImageOption option) const
else if (option == Description)
return d->description;
else if (option == Size)
- return QSize(d->info_ptr->width, d->info_ptr->height);
+ return QSize(png_get_image_width(d->png_ptr, d->info_ptr),
+ png_get_image_height(d->png_ptr, d->info_ptr));
else if (option == ImageFormat)
return d->readImageFormat();
return 0;
generated by cgit v0.12 at 2025-01-01 17:19:05 (GMT)