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SDL_cocoamodes.m (Cocoa_GetDisplayDPI): fix build using older toolchains 

Fixes https://github.com/libsdl-org/SDL/issues/5162
This commit is contained in:
Ozkan Sezer 2022-01-02 19:11:50 +03:00
parent 13a9cd4797
commit 4b112620a3
1 changed files with 5 additions and 4 deletions
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9
src/video/cocoa/SDL_cocoamodes.m
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@ -461,9 +461,9 @@ Cocoa_GetDisplayDPI(_THIS, SDL_VideoDisplay * display, float * ddpi, float * hdp
for (NSScreen *screen in screens) {
const CGDirectDisplayID dpyid = (const CGDirectDisplayID ) [[[screen deviceDescription] objectForKey:@"NSScreenNumber"] unsignedIntValue];
if (dpyid == data->display) {
#ifdef MAC_OS_X_VERSION_10_8
/* Neither CGDisplayScreenSize(description's NSScreenNumber) nor [NSScreen backingScaleFactor] can calculate the correct dpi in macOS. E.g. backingScaleFactor is always 2 in all display modes for rMBP 16" */
if (@available(macOS 10.8, *)) {
if (floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_7) {
CFStringRef dmKeys[1] = { kCGDisplayShowDuplicateLowResolutionModes };
CFBooleanRef dmValues[1] = { kCFBooleanTrue };
CFDictionaryRef dmOptions = CFDictionaryCreate(kCFAllocatorDefault, (const void**) dmKeys, (const void**) dmValues, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks );
@ -492,14 +492,15 @@ Cocoa_GetDisplayDPI(_THIS, SDL_VideoDisplay * display, float * ddpi, float * hdp
}
CFRelease(allDisplayModes);
CFRelease(dmOptions);
} else if (@available(macOS 10.7, *)) {
} else
#endif
if (floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_6) {
// fallback for 10.7
scaleFactor = [screen backingScaleFactor];
displayNativeSize.width = displayNativeSize.width * scaleFactor;
displayNativeSize.height = displayNativeSize.height * scaleFactor;
break;
}
}
}