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| author | Volker Hilsheimer <volker.hilsheimer@nokia.com> | 2009-07-21 08:03:17 (GMT) |
|---|---|---|
| committer | Volker Hilsheimer <volker.hilsheimer@nokia.com> | 2009-07-21 08:03:39 (GMT) |
| commit | c6d243df383514f2bf30e178eba087a312191b0f (patch) | |
| tree | 40ba1b008ea1d2eda3ab6ed01b283e15e2a252da /src/gui/image/qimage.cpp | |
| parent | 5538d52eec9454404d3e02d9d23cc562b91a68e0 (diff) | |
| download | Qt-c6d243df383514f2bf30e178eba087a312191b0f.zip Qt-c6d243df383514f2bf30e178eba087a312191b0f.tar.gz Qt-c6d243df383514f2bf30e178eba087a312191b0f.tar.bz2 | |
Doc: mark QImage/QPixmap alphaChannel and setAlphaChannel as obsolete.
They are expensive - which is why QImage::setALphaChannel had been
obsoleted in Qt 4.5.
Reviewed-by: Gunnar
Diffstat (limited to 'src/gui/image/qimage.cpp')
| -rw-r--r-- | src/gui/image/qimage.cpp | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/src/gui/image/qimage.cpp b/src/gui/image/qimage.cpp index ad55dcd..7d7dde1 100644 --- a/src/gui/image/qimage.cpp +++ b/src/gui/image/qimage.cpp @@ -612,9 +612,6 @@ 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. @@ -5587,7 +5584,7 @@ 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 +5662,8 @@ 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 +5743,7 @@ 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 { |