void flush(QWindow *widget, const QRegion ®ion, const QPoint &offset);
void resize (const QSize &size, const QRegion &);
bool scroll(const QRegion &area, int dx, int dy);
+ CGImageRef getBackingStoreCGImage();
private:
- QImage *m_image;
+ QImage m_qImage;
+ CGImageRef m_cgImage;
+ QSize m_requestedSize;
};
QT_END_NAMESPACE
****************************************************************************/
#include "qcocoabackingstore.h"
-#include "qcocoaautoreleasepool.h"
-
-#include <QtCore/qdebug.h>
#include <QtGui/QPainter>
+#include "qcocoahelpers.h"
QT_BEGIN_NAMESPACE
QCocoaBackingStore::QCocoaBackingStore(QWindow *window)
: QPlatformBackingStore(window)
+ , m_cgImage(0)
{
- m_image = new QImage(window->geometry().size(),QImage::Format_ARGB32_Premultiplied);
}
QCocoaBackingStore::~QCocoaBackingStore()
{
- delete m_image;
+ CGImageRelease(m_cgImage);
+ m_cgImage = 0;
}
QPaintDevice *QCocoaBackingStore::paintDevice()
{
- return m_image;
+ if (m_qImage.size() != m_requestedSize) {
+ CGImageRelease(m_cgImage);
+ m_cgImage = 0;
+ m_qImage = QImage(m_requestedSize, QImage::Format_ARGB32_Premultiplied);
+ }
+ return &m_qImage;
}
-void QCocoaBackingStore::flush(QWindow *widget, const QRegion ®ion, const QPoint &offset)
+void QCocoaBackingStore::flush(QWindow *win, const QRegion ®ion, const QPoint &offset)
{
- Q_UNUSED(widget);
- Q_UNUSED(offset);
- QCocoaAutoReleasePool pool;
-
- QRect geo = region.boundingRect();
- NSRect rect = NSMakeRect(geo.x(), geo.y(), geo.width(), geo.height());
- QCocoaWindow *cocoaWindow = static_cast<QCocoaWindow *>(window()->handle());
- if (cocoaWindow) {
- // setImage call is needed here to make the displayRect call
- // have effect - even if the image has not changed.
- [cocoaWindow->m_contentView setImage:m_image];
- [cocoaWindow->m_contentView displayRect:rect];
- }
+ // A flush means that qImage has changed. Since CGImages are seen as
+ // immutable, CoreImage fails to pick up this change for m_cgImage
+ // (since it usually cached), so we must recreate it. We await doing this
+ // until one of the views needs it, since, together with calling
+ // "setNeedsDisplayInRect" instead of "displayRect" we will, in most
+ // cases, get away with doing this once for every repaint. Also note that
+ // m_cgImage is only a reference to the data inside m_qImage, it is not a copy.
+ CGImageRelease(m_cgImage);
+ m_cgImage = 0;
+ if (QCocoaWindow *cocoaWindow = static_cast<QCocoaWindow *>(win->handle()))
+ [cocoaWindow->m_contentView flushBackingStore:this region:region offset:offset];
}
void QCocoaBackingStore::resize(const QSize &size, const QRegion &)
{
- delete m_image;
- m_image = new QImage(size, QImage::Format_ARGB32_Premultiplied);
-
- QCocoaWindow *cocoaWindow = static_cast<QCocoaWindow *>(window()->handle());
- if (cocoaWindow)
- [static_cast<QNSView *>(cocoaWindow->m_contentView) setImage:m_image];
+ m_requestedSize = size;
}
bool QCocoaBackingStore::scroll(const QRegion &area, int dx, int dy)
const QVector<QRect> qrects = area.rects();
for (int i = 0; i < qrects.count(); ++i) {
const QRect &qrect = qrects.at(i);
- qt_scrollRectInImage(*m_image, qrect, qpoint);
+ qt_scrollRectInImage(m_qImage, qrect, qpoint);
}
return true;
}
+CGImageRef QCocoaBackingStore::getBackingStoreCGImage()
+{
+ if (!m_cgImage)
+ m_cgImage = qt_mac_toCGImage(m_qImage, false, 0);
+
+ // Warning: do not retain/release/cache the returned image from
+ // outside the backingstore since it shares data with a QImage and
+ // needs special memory considerations.
+ return m_cgImage;
+}
+
QT_END_NAMESPACE
};
CGContextRef qt_mac_cg_context(const QPaintDevice *pdev);
+CGImageRef qt_mac_toCGImage(const QImage &qImage, bool isMask, uchar **dataCopy);
QT_END_NAMESPACE
return 0;
}
+CGImageRef qt_mac_toCGImage(const QImage &qImage, bool isMask, uchar **dataCopy)
+{
+ int width = qImage.width();
+ int height = qImage.height();
+
+ if (width <= 0 || height <= 0) {
+ qWarning() << Q_FUNC_INFO <<
+ "setting invalid size" << width << "x" << height << "for qnsview image";
+ return 0;
+ }
+
+ const uchar *imageData = qImage.bits();
+ if (dataCopy) {
+ delete[] *dataCopy;
+ *dataCopy = new uchar[qImage.byteCount()];
+ memcpy(*dataCopy, imageData, qImage.byteCount());
+ }
+ int bitDepth = qImage.depth();
+ int colorBufferSize = 8;
+ int bytesPrLine = qImage.bytesPerLine();
+
+ CGDataProviderRef cgDataProviderRef = CGDataProviderCreateWithData(
+ NULL,
+ dataCopy ? *dataCopy : imageData,
+ qImage.byteCount(),
+ NULL);
+
+ CGImageRef cgImage = 0;
+ if (isMask) {
+ cgImage = CGImageMaskCreate(width,
+ height,
+ colorBufferSize,
+ bitDepth,
+ bytesPrLine,
+ cgDataProviderRef,
+ NULL,
+ false);
+ } else {
+ CGColorSpaceRef cgColourSpaceRef = CGColorSpaceCreateDeviceRGB();
+ cgImage = CGImageCreate(width,
+ height,
+ colorBufferSize,
+ bitDepth,
+ bytesPrLine,
+ cgColourSpaceRef,
+ kCGBitmapByteOrder32Little | kCGImageAlphaNoneSkipFirst,
+ cgDataProviderRef,
+ NULL,
+ false,
+ kCGRenderingIntentDefault);
+ CGColorSpaceRelease(cgColourSpaceRef);
+ }
+ CGDataProviderRelease(cgDataProviderRef);
+ return cgImage;
+}
+
QT_END_NAMESPACE
QT_BEGIN_NAMESPACE
class QCocoaWindow;
+class QCocoaBackingStore;
QT_END_NAMESPACE
@interface QNSView : NSView <NSTextInputClient> {
- CGImageRef m_cgImage;
+ QCocoaBackingStore* m_backingStore;
+ QPoint m_backingStoreOffset;
CGImageRef m_maskImage;
uchar *m_maskData;
QWindow *m_window;
- (id)init;
- (id)initWithQWindow:(QWindow *)window platformWindow:(QCocoaWindow *) platformWindow;
-- (void)setImage:(QImage *)image;
+- (void)flushBackingStore:(QCocoaBackingStore *)backingStore region:(const QRegion &)region offset:(QPoint)offset;
- (void)setMaskRegion:(const QRegion *)region;
- (void)drawRect:(NSRect)dirtyRect;
- (void)updateGeometry;
#include <QtGui/QTextFormat>
#include <QtCore/QDebug>
#include <private/qguiapplication_p.h>
+#include "qcocoabackingstore.h"
#ifdef QT_COCOA_ENABLE_ACCESSIBILITY_INSPECTOR
#include <accessibilityinspector.h>
{
self = [super initWithFrame : NSMakeRect(0,0, 300,300)];
if (self) {
- m_cgImage = 0;
+ m_backingStore = 0;
m_maskImage = 0;
m_maskData = 0;
m_window = 0;
- (void)dealloc
{
- CGImageRelease(m_cgImage);
- m_cgImage = 0;
CGImageRelease(m_maskImage);
m_maskImage = 0;
delete[] m_maskData;
}
}
-static CGImageRef qt_mac_toCGImage(QImage *qImage, bool isMask, uchar **dataCopy)
+- (void) flushBackingStore:(QCocoaBackingStore *)backingStore region:(const QRegion &)region offset:(QPoint)offset
{
- int width = qImage->width();
- int height = qImage->height();
-
- if (width <= 0 || height <= 0) {
- qWarning() << Q_FUNC_INFO <<
- "setting invalid size" << width << "x" << height << "for qnsview image";
- return 0;
- }
-
- const uchar *imageData = qImage->bits();
- if (dataCopy) {
- delete[] *dataCopy;
- *dataCopy = new uchar[qImage->byteCount()];
- memcpy(*dataCopy, imageData, qImage->byteCount());
- }
- int bitDepth = qImage->depth();
- int colorBufferSize = 8;
- int bytesPrLine = qImage->bytesPerLine();
-
- CGDataProviderRef cgDataProviderRef = CGDataProviderCreateWithData(
- NULL,
- dataCopy ? *dataCopy : imageData,
- qImage->byteCount(),
- NULL);
-
- CGImageRef cgImage = 0;
- if (isMask) {
- cgImage = CGImageMaskCreate(width,
- height,
- colorBufferSize,
- bitDepth,
- bytesPrLine,
- cgDataProviderRef,
- NULL,
- false);
- } else {
- CGColorSpaceRef cgColourSpaceRef = CGColorSpaceCreateDeviceRGB();
- cgImage = CGImageCreate(width,
- height,
- colorBufferSize,
- bitDepth,
- bytesPrLine,
- cgColourSpaceRef,
- kCGBitmapByteOrder32Little | kCGImageAlphaNoneSkipFirst,
- cgDataProviderRef,
- NULL,
- false,
- kCGRenderingIntentDefault);
- CGColorSpaceRelease(cgColourSpaceRef);
- }
- CGDataProviderRelease(cgDataProviderRef);
- return cgImage;
-}
-
-- (void) setImage:(QImage *)image
-{
- CGImageRelease(m_cgImage);
- m_cgImage = qt_mac_toCGImage(image, false, 0);
+ m_backingStore = backingStore;
+ m_backingStoreOffset = offset;
+ QRect br = region.boundingRect();
+ [self setNeedsDisplayInRect:NSMakeRect(br.x(), br.y(), br.width(), br.height())];
}
- (void) setMaskRegion:(const QRegion *)region
p.end();
maskImage = maskImage.convertToFormat(QImage::Format_Indexed8);
- m_maskImage = qt_mac_toCGImage(&maskImage, true, &m_maskData);
+ m_maskImage = qt_mac_toCGImage(maskImage, true, &m_maskData);
}
- (void) drawRect:(NSRect)dirtyRect
{
- if (!m_cgImage)
+ if (!m_backingStore)
return;
CGRect dirtyCGRect = NSRectToCGRect(dirtyRect);
-
NSGraphicsContext *nsGraphicsContext = [NSGraphicsContext currentContext];
CGContextRef cgContext = (CGContextRef) [nsGraphicsContext graphicsPort];
- CGContextSaveGState( cgContext );
+ // Translate coordiate system from CoreGraphics (bottom-left) to NSView (top-left):
+ CGContextSaveGState(cgContext);
int dy = dirtyCGRect.origin.y + CGRectGetMaxY(dirtyCGRect);
CGContextTranslateCTM(cgContext, 0, dy);
CGContextScaleCTM(cgContext, 1, -1);
+ // If a mask is set, modify the sub image accordingly:
CGImageRef subMask = 0;
if (m_maskImage) {
subMask = CGImageCreateWithImageInRect(m_maskImage, dirtyCGRect);
CGContextClipToMask(cgContext, dirtyCGRect, subMask);
}
- CGImageRef subImage = CGImageCreateWithImageInRect(m_cgImage, dirtyCGRect);
- CGContextDrawImage(cgContext,dirtyCGRect,subImage);
-
+ // Clip out and draw the correct sub image from the (shared) backingstore:
+ CGRect backingStoreRect = CGRectMake(
+ dirtyRect.origin.x + m_backingStoreOffset.x(),
+ dirtyRect.origin.y + m_backingStoreOffset.y(),
+ dirtyRect.size.width,
+ dirtyRect.size.height
+ );
+ CGImageRef bsCGImage = m_backingStore->getBackingStoreCGImage();
+ CGImageRef cleanImg = CGImageCreateWithImageInRect(bsCGImage, backingStoreRect);
+ CGContextDrawImage(cgContext, dirtyCGRect, cleanImg);
+
+ // Clean-up:
CGContextRestoreGState(cgContext);
-
- CGImageRelease(subImage);
+ CGImageRelease(cleanImg);
CGImageRelease(subMask);
}
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