1 files changed, 23 insertions, 25 deletions

diff --git a/src/gui/image/qimage.cpp b/src/gui/image/qimage.cpp
index fa1ce29b9..bb77fb53f 100644
--- a/src/gui/image/qimage.cpp
+++ b/src/gui/image/qimage.cpp
@@ -49,6 +49,7 @@
 #include "qimagewriter.h"
 #include "qstringlist.h"
 #include "qvariant.h"
+#include "qimagepixmapcleanuphooks_p.h"
 #include <ctype.h>
 #include <stdlib.h>
 #include <limits.h>
@@ -106,14 +107,6 @@ static inline bool checkPixelSize(const QImage::Format format)
     }
 
 
-// ### Qt 5: remove
-typedef void (*_qt_image_cleanup_hook)(int);
-Q_GUI_EXPORT _qt_image_cleanup_hook qt_image_cleanup_hook = 0;
-
-// ### Qt 5: rename
-typedef void (*_qt_image_cleanup_hook_64)(qint64);
-Q_GUI_EXPORT _qt_image_cleanup_hook_64 qt_image_cleanup_hook_64 = 0;
-
 static QImage rotated90(const QImage &src);
 static QImage rotated180(const QImage &src);
 static QImage rotated270(const QImage &src);
@@ -257,8 +250,8 @@ QImageData * QImageData::create(const QSize &size, QImage::Format format, int nu
 
 QImageData::~QImageData()
 {
-    if (is_cached && qt_image_cleanup_hook_64)
-        qt_image_cleanup_hook_64((((qint64) ser_no) << 32) | ((qint64) detach_no));
+    if (is_cached)
+        QImagePixmapCleanupHooks::executeImageHooks((((qint64) ser_no) << 32) | ((qint64) detach_no));
     delete paintEngine;
     if (data && own_data)
         free(data);
@@ -590,9 +583,8 @@ bool QImageData::checkForAlphaPixels() const
 
     The mirrored() function returns a mirror of the image in the
     desired direction, the scaled() returns a copy of the image scaled
-    to a rectangle of the desired measures, the rgbSwapped() function
-    constructs a BGR image from a RGB image, and the alphaChannel()
-    function constructs an image from this image's alpha channel.
+    to a rectangle of the desired measures, and the rgbSwapped() function
+    constructs a BGR image from a RGB image.
 
     The scaledToWidth() and scaledToHeight() functions return scaled
     copies of the image.
@@ -612,9 +604,6 @@ bool QImageData::checkForAlphaPixels() const
     \table
     \header \o Function \o Description
     \row
-    \o setAlphaChannel()
-    \o Sets the alpha channel of the image.
-    \row
     \o setDotsPerMeterX()
     \o Defines the aspect ratio by setting the number of pixels that fit
     horizontally in a physical meter.
@@ -1346,8 +1335,8 @@ QImage::operator QVariant() const
 void QImage::detach()
 {
     if (d) {
-        if (d->is_cached && qt_image_cleanup_hook_64 && d->ref == 1)
-            qt_image_cleanup_hook_64(cacheKey());
+        if (d->is_cached && d->ref == 1)
+            QImagePixmapCleanupHooks::executeImageHooks(cacheKey());
 
         if (d->ref != 1 || d->ro_data)
             *this = copy();
@@ -4632,12 +4621,19 @@ bool QImage::loadFromData(const uchar *data, int len, const char *format)
     binary \a data. The loader attempts to read the image using the
     specified \a format. If \a format is not specified (which is the default),
     the loader probes the file for a header to guess the file format.
+    binary \a data. The loader attempts to read the image, either using the
+    optional image \a format specified or by determining the image format from
+    the data.
 
-    If the loading of the image failed, this object is a null image.
+    If \a format is not specified (which is the default), the loader probes the
+    file for a header to determine the file format. If \a format is specified,
+    it must be one of the values returned by QImageReader::supportedImageFormats().
+
+    If the loading of the image fails, the image returned will be a null image.
+
+    \sa load(), save(), {QImage#Reading and Writing Image Files}{Reading and Writing Image Files}
+ */
 
-    \sa load(), save(), {QImage#Reading and Writing Image
-    Files}{Reading and Writing Image Files}
-*/
 QImage QImage::fromData(const uchar *data, int size, const char *format)
 {
     QByteArray a = QByteArray::fromRawData(reinterpret_cast<const char *>(data), size);
@@ -5269,7 +5265,7 @@ QPaintEngine *QImage::paintEngine() const
 
 
 /*!
-    \reimp
+    \internal
 
     Returns the size for the specified \a metric on the device.
 */
@@ -5587,7 +5583,7 @@ bool QImage::isDetached() const
     Note that the image will be converted to the Format_ARGB32_Premultiplied
     format if the function succeeds.
 
-    Use one of the composition mods in QPainter::CompositionMode instead.
+    Use one of the composition modes in QPainter::CompositionMode instead.
 
     \warning This function is expensive.
 
@@ -5665,6 +5661,8 @@ void QImage::setAlphaChannel(const QImage &alphaChannel)
 
 
 /*!
+    \obsolete
+
     Returns the alpha channel of the image as a new grayscale QImage in which
     each pixel's red, green, and blue values are given the alpha value of the
     original image. The color depth of the returned image is 8-bit.
@@ -5744,7 +5742,7 @@ QImage QImage::alphaChannel() const
     Returns true if the image has a format that respects the alpha
     channel, otherwise returns false.
 
-    \sa alphaChannel(), {QImage#Image Information}{Image Information}
+    \sa {QImage#Image Information}{Image Information}
 */
 bool QImage::hasAlphaChannel() const
 {