AuroraMiddleware/qt5base-lts
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Cocoa: Fix zombie NSScreen crash

Browse Source 
While the Cocoa documentation says we should not cache [NSScreen screens],
it seems that we should not cache its referenced objects either. This
caused a crash in desktop components when using Dial because, given
the way it is being rendered, we need to know the screen pixel ratio.

Task-number: QTCOMPONENTS-1279
Change-Id: If5c3c6f14d04925215b9dca011143a2056a68846
Reviewed-by: J-P Nurmi <jpnurmi@digia.com>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>
This commit is contained in:
Gabriel de Dietrich 2013-01-02 16:42:16 +01:00 committed by The Qt Project
parent d75b217901
commit f415d86d1e
2 changed files with 14 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/plugins/platforms/cocoa/qcocoaintegration.h
View File

@ -80,11 +80,11 @@ public:
// ----------------------------------------------------
// Additional methods
void setVirtualSiblings(QList<QPlatformScreen *> siblings) { m_siblings = siblings; }
NSScreen *osScreen() const { return m_screen; }
NSScreen *osScreen() const;
void updateGeometry();
public:
NSScreen *m_screen;
int m_screenIndex;
QRect m_geometry;
QRect m_availableGeometry;
QDpi m_logicalDpi;

19
src/plugins/platforms/cocoa/qcocoaintegration.mm
View File

@ -70,9 +70,8 @@ static void initResources()
QT_BEGIN_NAMESPACE
QCocoaScreen::QCocoaScreen(int screenIndex) :
QPlatformScreen(), m_refreshRate(60.0)
QPlatformScreen(), m_screenIndex(screenIndex), m_refreshRate(60.0)
{
m_screen = [[NSScreen screens] objectAtIndex:screenIndex];
updateGeometry();
m_cursor = new QCocoaCursor;
}
@ -82,19 +81,25 @@ QCocoaScreen::~QCocoaScreen()
delete m_cursor;
}
NSScreen *QCocoaScreen::osScreen() const
{
return [[NSScreen screens] objectAtIndex:m_screenIndex];
}
void QCocoaScreen::updateGeometry()
{
NSRect frameRect = [m_screen frame];
NSScreen *nsScreen = osScreen();
NSRect frameRect = [nsScreen frame];
m_geometry = QRect(frameRect.origin.x, frameRect.origin.y, frameRect.size.width, frameRect.size.height);
NSRect visibleRect = [m_screen visibleFrame];
NSRect visibleRect = [nsScreen visibleFrame];
m_availableGeometry = QRect(visibleRect.origin.x,
frameRect.size.height - (visibleRect.origin.y + visibleRect.size.height), // invert y
visibleRect.size.width, visibleRect.size.height);
m_format = QImage::Format_RGB32;
m_depth = NSBitsPerPixelFromDepth([m_screen depth]);
m_depth = NSBitsPerPixelFromDepth([nsScreen depth]);
NSDictionary *devDesc = [m_screen deviceDescription];
NSDictionary *devDesc = [nsScreen deviceDescription];
CGDirectDisplayID dpy = [[devDesc objectForKey:@"NSScreenNumber"] unsignedIntValue];
CGSize size = CGDisplayScreenSize(dpy);
m_physicalSize = QSizeF(size.width, size.height);
@ -119,7 +124,7 @@ qreal QCocoaScreen::devicePixelRatio() const
{
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_7
if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_7) {
return qreal([m_screen backingScaleFactor]);
return qreal([osScreen() backingScaleFactor]);
} else
#endif
{