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Cocoa backend: added checks before accessing sliders dictionary

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This commit is contained in:
Maksim Shabunin 2016-02-24 19:40:50 +03:00
parent 177aef05b6
commit ee2f8d006f
1 changed files with 28 additions and 19 deletions
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19
modules/highgui/src/window_cocoa.mm
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@ -230,9 +230,11 @@ CV_IMPL void cvShowImage( const char* name, const CvArr* arr)
//Set new view size considering sliders (reserve height and min width)
NSRect vrectNew = vrectOld;
int slider_height = 0;
if ([window respondsToSelector:@selector(sliders)]) {
for(NSString *key in [window sliders]) {
slider_height += [[[window sliders] valueForKey:key] frame].size.height;
}
}
vrectNew.size.height = [[[window contentView] image] size].height + slider_height;
vrectNew.size.width = std::max<int>([[[window contentView] image] size].width, MIN_SLIDER_WIDTH);
[[window contentView] setFrameSize:vrectNew.size]; //adjust sliders to fit new window size
@ -331,10 +333,13 @@ CV_IMPL int cvCreateTrackbar2(const char* trackbar_name,
NSAutoreleasePool* localpool = [[NSAutoreleasePool alloc] init];
int res = cvCreateTrackbar(trackbar_name, window_name, val, count, NULL);
if(res) {
CVSlider *slider = [[cvGetWindow(window_name) sliders] valueForKey:[NSString stringWithFormat:@"%s", trackbar_name]];
CVWindow *window = cvGetWindow(window_name);
if (window && [window respondsToSelector:@selector(sliders)]) {
CVSlider *slider = [[window sliders] valueForKey:[NSString stringWithFormat:@"%s", trackbar_name]];
[slider setCallback2:on_notify2];
[slider setUserData:userdata];
}
}
[localpool drain];
return res;
}
@ -383,7 +388,7 @@ cvSetMouseCallback( const char* name, CvMouseCallback function, void* info)
localpool4 = [[NSAutoreleasePool alloc] init];
window = cvGetWindow(window_name);
if(window) {
if(window && [window respondsToSelector:@selector(sliders)]) {
CVSlider *slider = [[window sliders] valueForKey:[NSString stringWithFormat:@"%s", trackbar_name]];
if(slider) {
pos = [[slider slider] intValue];
@ -414,7 +419,7 @@ CV_IMPL void cvSetTrackbarPos(const char* trackbar_name, const char* window_name
localpool5 = [[NSAutoreleasePool alloc] init];
window = cvGetWindow(window_name);
if(window) {
if(window && [window respondsToSelector:@selector(sliders)]) {
slider = [[window sliders] valueForKey:[NSString stringWithFormat:@"%s", trackbar_name]];
if(slider) {
[[slider slider] setIntValue:pos];
@ -442,7 +447,7 @@ CV_IMPL void cvSetTrackbarMax(const char* trackbar_name, const char* window_name
localpool5 = [[NSAutoreleasePool alloc] init];
window = cvGetWindow(window_name);
if(window) {
if(window && [window respondsToSelector:@selector(sliders)]) {
slider = [[window sliders] valueForKey:[NSString stringWithFormat:@"%s", trackbar_name]];
if(slider) {
if(maxval >= 0) {
@ -473,7 +478,7 @@ CV_IMPL void cvSetTrackbarMin(const char* trackbar_name, const char* window_name
localpool5 = [[NSAutoreleasePool alloc] init];
window = cvGetWindow(window_name);
if(window) {
if(window && [window respondsToSelector:@selector(sliders)]) {
slider = [[window sliders] valueForKey:[NSString stringWithFormat:@"%s", trackbar_name]];
if(slider) {
if(minval >= 0) {
@ -709,10 +714,12 @@ void cv::setWindowTitle(const String& winname, const String& title)
double viewHeight = [self contentView].frame.size.height;
double viewWidth = [self contentView].frame.size.width;
CVWindow *window = (CVWindow *)[[self contentView] window];
if ([window respondsToSelector:@selector(sliders)]) {
for(NSString *key in [window sliders]) {
NSSlider *slider = [[window sliders] valueForKey:key];
viewHeight = std::min(viewHeight, (double)([slider frame].origin.y));
}
}
viewHeight -= TOP_BORDER;
mp.y = viewHeight - mp.y;
@ -929,6 +936,7 @@ void cv::setWindowTitle(const String& winname, const String& title)
int height = size.height;
CVWindow *cvwindow = (CVWindow *)[self window];
if ([cvwindow respondsToSelector:@selector(sliders)]) {
for(NSString *key in [cvwindow sliders]) {
NSSlider *slider = [[cvwindow sliders] valueForKey:key];
NSRect r = [slider frame];
@ -937,6 +945,7 @@ void cv::setWindowTitle(const String& winname, const String& title)
[slider setFrame:r];
height -= r.size.height;
}
}
[localpool drain];
}