summaryrefslogtreecommitdiffstats
path: root/src/gui/image
diff options
context:
space:
mode:
Diffstat (limited to 'src/gui/image')
-rw-r--r--src/gui/image/qimage.cpp3
-rw-r--r--src/gui/image/qpixmap.cpp28
-rw-r--r--src/gui/image/qpixmap_mac.cpp5
-rw-r--r--src/gui/image/qpixmap_mac_p.h2
-rw-r--r--src/gui/image/qpixmap_raster.cpp28
-rw-r--r--src/gui/image/qpixmap_raster_p.h2
-rw-r--r--src/gui/image/qpixmap_x11.cpp5
-rw-r--r--src/gui/image/qpixmap_x11_p.h2
-rw-r--r--src/gui/image/qpixmapdata.cpp13
-rw-r--r--src/gui/image/qpixmapdata_p.h4
-rw-r--r--src/gui/image/qpixmapfilter.cpp51
11 files changed, 106 insertions, 37 deletions
diff --git a/src/gui/image/qimage.cpp b/src/gui/image/qimage.cpp
index 9048387..21ab40c 100644
--- a/src/gui/image/qimage.cpp
+++ b/src/gui/image/qimage.cpp
@@ -377,6 +377,9 @@ bool QImageData::checkForAlphaPixels() const
\note If you would like to load QImage objects in a static build of Qt,
refer to the \l{How To Create Qt Plugins#Static Plugins}{Plugin HowTo}.
+ \warning Painting on a QImage with the format
+ QImage::Format_Indexed8 is not supported.
+
\tableofcontents
\section1 Reading and Writing Image Files
diff --git a/src/gui/image/qpixmap.cpp b/src/gui/image/qpixmap.cpp
index 558ae54..c03a364 100644
--- a/src/gui/image/qpixmap.cpp
+++ b/src/gui/image/qpixmap.cpp
@@ -361,13 +361,7 @@ QPixmap QPixmap::copy(const QRect &rect) const
const QRect r = rect.isEmpty() ? QRect(0, 0, width(), height()) : rect;
- QPixmapData *d;
- QGraphicsSystem* gs = QApplicationPrivate::graphicsSystem();
- if (gs)
- d = gs->createPixmapData(data->pixelType());
- else
- d = QGraphicsSystem::createDefaultPixmapData(data->pixelType());
-
+ QPixmapData *d = data->createCompatiblePixmapData();
d->copy(data.data(), r);
return QPixmap(d);
}
@@ -947,6 +941,9 @@ bool QPixmap::doImageIO(QImageWriter *writer, int quality) const
/*!
Fills the pixmap with the given \a color.
+ The effect of this function is undefined when the pixmap is
+ being painted on.
+
\sa {QPixmap#Pixmap Transformations}{Pixmap Transformations}
*/
@@ -955,6 +952,13 @@ void QPixmap::fill(const QColor &color)
if (isNull())
return;
+ // Some people are probably already calling fill while a painter is active, so to not break
+ // their programs, only print a warning and return when the fill operation could cause a crash.
+ if (paintingActive() && (color.alpha() != 255) && !hasAlphaChannel()) {
+ qWarning("QPixmap::fill: Cannot fill while pixmap is being painted on");
+ return;
+ }
+
detach();
data->fill(color);
}
@@ -1663,10 +1667,10 @@ QPixmap QPixmap::transformed(const QMatrix &matrix, Qt::TransformationMode mode)
identifies the contents of the QPixmap object.
The x11Info() function returns information about the configuration
- of the X display used to display the widget. The
- x11PictureHandle() function returns the X11 Picture handle of the
- pixmap for XRender support. Note that the two latter functions are
- only available on x11.
+ of the X display used by the screen to which the pixmap currently
+ belongs. The x11PictureHandle() function returns the X11 Picture
+ handle of the pixmap for XRender support. Note that the two latter
+ functions are only available on x11.
\endtable
@@ -2084,7 +2088,7 @@ QPixmapData* QPixmap::pixmapData() const
/*! \fn const QX11Info &QPixmap::x11Info() const
\bold{X11 only:} Returns information about the configuration of
- the X display used to display the widget.
+ the X display used by the screen to which the pixmap currently belongs.
\warning This function is only available on X11.
diff --git a/src/gui/image/qpixmap_mac.cpp b/src/gui/image/qpixmap_mac.cpp
index de532fd..afa6f83 100644
--- a/src/gui/image/qpixmap_mac.cpp
+++ b/src/gui/image/qpixmap_mac.cpp
@@ -166,6 +166,11 @@ QMacPixmapData::QMacPixmapData(PixelType type)
{
}
+QPixmapData *QMacPixmapData::createCompatiblePixmapData() const
+{
+ return new QMacPixmapData(pixelType());
+}
+
#define BEST_BYTE_ALIGNMENT 16
#define COMPTUE_BEST_BYTES_PER_ROW(bpr) \
(((bpr) + (BEST_BYTE_ALIGNMENT - 1)) & ~(BEST_BYTE_ALIGNMENT - 1))
diff --git a/src/gui/image/qpixmap_mac_p.h b/src/gui/image/qpixmap_mac_p.h
index 528dd1f..a3fb95f 100644
--- a/src/gui/image/qpixmap_mac_p.h
+++ b/src/gui/image/qpixmap_mac_p.h
@@ -65,6 +65,8 @@ public:
QMacPixmapData(PixelType type);
~QMacPixmapData();
+ QPixmapData *createCompatiblePixmapData() const;
+
void resize(int width, int height);
void fromImage(const QImage &image, Qt::ImageConversionFlags flags);
void copy(const QPixmapData *data, const QRect &rect);
diff --git a/src/gui/image/qpixmap_raster.cpp b/src/gui/image/qpixmap_raster.cpp
index ad68b07..fc76dc3 100644
--- a/src/gui/image/qpixmap_raster.cpp
+++ b/src/gui/image/qpixmap_raster.cpp
@@ -55,6 +55,29 @@ QT_BEGIN_NAMESPACE
const uchar qt_pixmap_bit_mask[] = { 0x01, 0x02, 0x04, 0x08,
0x10, 0x20, 0x40, 0x80 };
+QPixmap qt_toRasterPixmap(const QImage &image)
+{
+ QPixmapData *data =
+ new QRasterPixmapData(image.depth() == 1
+ ? QPixmapData::BitmapType
+ : QPixmapData::PixmapType);
+
+ data->fromImage(image, Qt::AutoColor);
+
+ return QPixmap(data);
+}
+
+QPixmap qt_toRasterPixmap(const QPixmap &pixmap)
+{
+ if (pixmap.isNull())
+ return QPixmap();
+
+ if (QPixmap(pixmap).data_ptr()->classId() == QPixmapData::RasterClass)
+ return pixmap;
+
+ return qt_toRasterPixmap(pixmap.toImage());
+}
+
QRasterPixmapData::QRasterPixmapData(PixelType type)
: QPixmapData(type, RasterClass)
{
@@ -64,6 +87,11 @@ QRasterPixmapData::~QRasterPixmapData()
{
}
+QPixmapData *QRasterPixmapData::createCompatiblePixmapData() const
+{
+ return new QRasterPixmapData(pixelType());
+}
+
void QRasterPixmapData::resize(int width, int height)
{
QImage::Format format;
diff --git a/src/gui/image/qpixmap_raster_p.h b/src/gui/image/qpixmap_raster_p.h
index da0405e..1553940 100644
--- a/src/gui/image/qpixmap_raster_p.h
+++ b/src/gui/image/qpixmap_raster_p.h
@@ -68,6 +68,8 @@ public:
QRasterPixmapData(PixelType type);
~QRasterPixmapData();
+ QPixmapData *createCompatiblePixmapData() const;
+
void resize(int width, int height);
void fromFile(const QString &filename, Qt::ImageConversionFlags flags);
void fromImage(const QImage &image, Qt::ImageConversionFlags flags);
diff --git a/src/gui/image/qpixmap_x11.cpp b/src/gui/image/qpixmap_x11.cpp
index 74543a0..ea9eff9 100644
--- a/src/gui/image/qpixmap_x11.cpp
+++ b/src/gui/image/qpixmap_x11.cpp
@@ -319,6 +319,11 @@ QX11PixmapData::QX11PixmapData(PixelType type)
{
}
+QPixmapData *QX11PixmapData::createCompatiblePixmapData() const
+{
+ return new QX11PixmapData(pixelType());
+}
+
void QX11PixmapData::resize(int width, int height)
{
setSerialNumber(++qt_pixmap_serial);
diff --git a/src/gui/image/qpixmap_x11_p.h b/src/gui/image/qpixmap_x11_p.h
index e34e690..2d6672d 100644
--- a/src/gui/image/qpixmap_x11_p.h
+++ b/src/gui/image/qpixmap_x11_p.h
@@ -71,6 +71,8 @@ public:
// Qt::ImageConversionFlags flags);
~QX11PixmapData();
+ QPixmapData *createCompatiblePixmapData() const;
+
void resize(int width, int height);
void fromImage(const QImage &image, Qt::ImageConversionFlags flags);
void copy(const QPixmapData *data, const QRect &rect);
diff --git a/src/gui/image/qpixmapdata.cpp b/src/gui/image/qpixmapdata.cpp
index 93fc2eb..1ad1f02 100644
--- a/src/gui/image/qpixmapdata.cpp
+++ b/src/gui/image/qpixmapdata.cpp
@@ -43,6 +43,8 @@
#include <QtCore/qbuffer.h>
#include <QtGui/qbitmap.h>
#include <QtGui/qimagereader.h>
+#include <private/qgraphicssystem_p.h>
+#include <private/qapplication_p.h>
QT_BEGIN_NAMESPACE
@@ -67,6 +69,17 @@ QPixmapData::~QPixmapData()
{
}
+QPixmapData *QPixmapData::createCompatiblePixmapData() const
+{
+ QPixmapData *d;
+ QGraphicsSystem *gs = QApplicationPrivate::graphicsSystem();
+ if (gs)
+ d = gs->createPixmapData(pixelType());
+ else
+ d = QGraphicsSystem::createDefaultPixmapData(pixelType());
+ return d;
+}
+
static QImage makeBitmapCompliantIfNeeded(QPixmapData *d, const QImage &image, Qt::ImageConversionFlags flags)
{
if (d->pixelType() == QPixmapData::BitmapType) {
diff --git a/src/gui/image/qpixmapdata_p.h b/src/gui/image/qpixmapdata_p.h
index c26fba3..2f4f201 100644
--- a/src/gui/image/qpixmapdata_p.h
+++ b/src/gui/image/qpixmapdata_p.h
@@ -75,9 +75,11 @@ public:
enum ClassId { RasterClass, X11Class, MacClass, DirectFBClass,
OpenGLClass, OpenVGClass, CustomClass = 1024 };
- QPixmapData(PixelType pixelpType, int classId);
+ QPixmapData(PixelType pixelType, int classId);
virtual ~QPixmapData();
+ virtual QPixmapData *createCompatiblePixmapData() const;
+
virtual void resize(int width, int height) = 0;
virtual void fromImage(const QImage &image,
Qt::ImageConversionFlags flags) = 0;
diff --git a/src/gui/image/qpixmapfilter.cpp b/src/gui/image/qpixmapfilter.cpp
index df445db..9fcf776 100644
--- a/src/gui/image/qpixmapfilter.cpp
+++ b/src/gui/image/qpixmapfilter.cpp
@@ -591,7 +591,7 @@ QRectF QPixmapBlurFilter::boundingRectFor(const QRectF &rect) const
// Blur the image according to the blur radius
// Based on exponential blur algorithm by Jani Huhtanen
// (maximum radius is set to 16)
-static QImage blurred(const QImage& image, const QRect& rect, int radius)
+static QImage blurred(const QImage& image, const QRect& rect, int radius, bool alphaOnly = false)
{
int tab[] = { 14, 10, 8, 6, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2 };
int alpha = (radius < 1) ? 16 : (radius > 17) ? 1 : tab[radius-1];
@@ -606,47 +606,53 @@ static QImage blurred(const QImage& image, const QRect& rect, int radius)
int rgba[4];
unsigned char* p;
+ int i1 = 0;
+ int i2 = 3;
+
+ if (alphaOnly)
+ i1 = i2 = (QSysInfo::ByteOrder == QSysInfo::BigEndian ? 0 : 3);
+
for (int col = c1; col <= c2; col++) {
p = result.scanLine(r1) + col * 4;
- for (int i = 0; i < 4; i++)
+ for (int i = i1; i <= i2; i++)
rgba[i] = p[i] << 4;
p += bpl;
for (int j = r1; j < r2; j++, p += bpl)
- for (int i = 0; i < 4; i++)
+ for (int i = i1; i <= i2; i++)
p[i] = (rgba[i] += ((p[i] << 4) - rgba[i]) * alpha / 16) >> 4;
}
for (int row = r1; row <= r2; row++) {
p = result.scanLine(row) + c1 * 4;
- for (int i = 0; i < 4; i++)
+ for (int i = i1; i <= i2; i++)
rgba[i] = p[i] << 4;
p += 4;
for (int j = c1; j < c2; j++, p += 4)
- for (int i = 0; i < 4; i++)
+ for (int i = i1; i <= i2; i++)
p[i] = (rgba[i] += ((p[i] << 4) - rgba[i]) * alpha / 16) >> 4;
}
for (int col = c1; col <= c2; col++) {
p = result.scanLine(r2) + col * 4;
- for (int i = 0; i < 4; i++)
+ for (int i = i1; i <= i2; i++)
rgba[i] = p[i] << 4;
p -= bpl;
for (int j = r1; j < r2; j++, p -= bpl)
- for (int i = 0; i < 4; i++)
+ for (int i = i1; i <= i2; i++)
p[i] = (rgba[i] += ((p[i] << 4) - rgba[i]) * alpha / 16) >> 4;
}
for (int row = r1; row <= r2; row++) {
p = result.scanLine(row) + c2 * 4;
- for (int i = 0; i < 4; i++)
+ for (int i = i1; i <= i2; i++)
rgba[i] = p[i] << 4;
p -= 4;
for (int j = c1; j < c2; j++, p -= 4)
- for (int i = 0; i < 4; i++)
+ for (int i = i1; i <= i2; i++)
p[i] = (rgba[i] += ((p[i] << 4) - rgba[i]) * alpha / 16) >> 4;
}
@@ -892,11 +898,11 @@ class QPixmapDropShadowFilterPrivate : public QPixmapFilterPrivate
{
public:
QPixmapDropShadowFilterPrivate()
- : offset(8, 8), color(63, 63, 63, 180), blurFilter(new QPixmapBlurFilter) {}
+ : offset(8, 8), color(63, 63, 63, 180), radius(1) {}
QPointF offset;
QColor color;
- QPixmapBlurFilter *blurFilter;
+ int radius;
};
/*!
@@ -940,8 +946,6 @@ public:
QPixmapDropShadowFilter::QPixmapDropShadowFilter(QObject *parent)
: QPixmapFilter(*new QPixmapDropShadowFilterPrivate, DropShadowFilter, parent)
{
- Q_D(QPixmapDropShadowFilter);
- d->blurFilter->setRadius(1);
}
/*!
@@ -951,8 +955,6 @@ QPixmapDropShadowFilter::QPixmapDropShadowFilter(QObject *parent)
*/
QPixmapDropShadowFilter::~QPixmapDropShadowFilter()
{
- Q_D(QPixmapDropShadowFilter);
- delete d->blurFilter;
}
/*!
@@ -967,7 +969,7 @@ QPixmapDropShadowFilter::~QPixmapDropShadowFilter()
int QPixmapDropShadowFilter::blurRadius() const
{
Q_D(const QPixmapDropShadowFilter);
- return d->blurFilter->radius();
+ return d->radius;
}
/*!
@@ -982,7 +984,7 @@ int QPixmapDropShadowFilter::blurRadius() const
void QPixmapDropShadowFilter::setBlurRadius(int radius)
{
Q_D(QPixmapDropShadowFilter);
- d->blurFilter->setRadius(radius);
+ d->radius = radius;
}
/*!
@@ -1056,7 +1058,7 @@ QRectF QPixmapDropShadowFilter::boundingRectFor(const QRectF &rect) const
{
Q_D(const QPixmapDropShadowFilter);
- const qreal delta = qreal(d->blurFilter->radius() * 2);
+ const qreal delta = qreal(d->radius * 2);
qreal x1 = qMin(rect.left(), rect.left() + d->offset.x() - delta);
qreal y1 = qMin(rect.top(), rect.top() + d->offset.y() - delta);
qreal x2 = qMax(rect.right(), rect.right() + d->offset.x() + delta);
@@ -1079,24 +1081,25 @@ void QPixmapDropShadowFilter::draw(QPainter *p,
QPixmapDropShadowFilter *dropShadowFilter = static_cast<QPixmapDropShadowFilter*>(filter);
if (dropShadowFilter) {
dropShadowFilter->setColor(d->color);
- dropShadowFilter->setBlurRadius(d->blurFilter->radius());
+ dropShadowFilter->setBlurRadius(d->radius);
dropShadowFilter->setOffset(d->offset);
dropShadowFilter->draw(p, pos, px, src);
return;
}
- QImage tmp = src.isNull() ? px.toImage() : px.copy(src.toRect()).toImage();
- QPainter tmpPainter(&tmp);
+ QImage tmp = src.isNull() ? px.toImage() : px.copy(src.toAlignedRect()).toImage();
+
+ // blur the alpha channel
+ tmp = blurred(tmp, tmp.rect(), d->radius, true);
// blacken the image...
+ QPainter tmpPainter(&tmp);
tmpPainter.setCompositionMode(QPainter::CompositionMode_SourceIn);
tmpPainter.fillRect(0, 0, tmp.width(), tmp.height(), d->color);
tmpPainter.end();
- const QPixmap pixTmp = QPixmap::fromImage(tmp);
-
// draw the blurred drop shadow...
- d->blurFilter->draw(p, pos + d->offset, pixTmp);
+ p->drawImage(pos + d->offset, tmp);
// Draw the actual pixmap...
p->drawPixmap(pos, px, src);
generated by cgit v0.12 at 2024-10-25 03:41:15 (GMT)