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cocoa_common: fix crash with dead key input and simplify related code

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Fixes #29. When a user used dead input keys (like the accent key), `mpv`
crashed because the code tried to access the 0 element of a characters array
(which was empty).

While I was closing this bug, I refactored some related conditionals to
make the code more readable.
This commit is contained in:
Stefano Pigozzi 2013-02-19 21:21:50 +01:00
parent a090c07453
commit 145c965135
1 changed files with 21 additions and 10 deletions
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29
video/out/cocoa_common.m
View File

@ -54,6 +54,18 @@
#define NSLeftAlternateKeyMask (0x000020 | NSAlternateKeyMask)
#define NSRightAlternateKeyMask (0x000040 | NSAlternateKeyMask)
static bool LeftAltPressed(NSEvent *event)
{
return ([event modifierFlags] & NSLeftAlternateKeyMask) ==
NSLeftAlternateKeyMask;
}
static bool RightAltPressed(NSEvent *event)
{
return ([event modifierFlags] & NSRightAlternateKeyMask) ==
NSRightAlternateKeyMask;
}
// add methods not available on OSX versions prior to 10.7
#ifndef MAC_OS_X_VERSION_10_7
@interface NSView (IntroducedInLion)
@ -678,22 +690,21 @@ void create_menu()
- (void)keyDown:(NSEvent *)theEvent
{
unsigned char charcode;
if (([theEvent modifierFlags] & NSRightAlternateKeyMask) ==
NSRightAlternateKeyMask)
charcode = *[[theEvent characters] UTF8String];
else
charcode = [[theEvent charactersIgnoringModifiers] characterAtIndex:0];
NSString *chars;
int key = convert_key([theEvent keyCode], charcode);
if (RightAltPressed(theEvent))
chars = [theEvent characters];
else
chars = [theEvent charactersIgnoringModifiers];
int key = convert_key([theEvent keyCode], *[chars UTF8String]);
if (key > -1) {
if ([theEvent modifierFlags] & NSShiftKeyMask)
key |= MP_KEY_MODIFIER_SHIFT;
if ([theEvent modifierFlags] & NSControlKeyMask)
key |= MP_KEY_MODIFIER_CTRL;
if (([theEvent modifierFlags] & NSLeftAlternateKeyMask) ==
NSLeftAlternateKeyMask)
if (LeftAltPressed(theEvent))
key |= MP_KEY_MODIFIER_ALT;
if ([theEvent modifierFlags] & NSCommandKeyMask)
key |= MP_KEY_MODIFIER_META;