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Fixed bug 2655 - OSX: Window position and global mouse coord spaces are different

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Tim McDaniel

On OSX, with revision 8729, the coordinate space for window position and the coordinate space for global mouse position don't match.  For a non-fullscreen window, the window position is global relative to the bottom of the menubar.  The global mouse position is relative to the top of the screen.  This affects Cocoa_WarpMouse and potentially other things as well.  Further, the coordinate system for window position is now affected by what screen it is on.  For example, if I have two equal size screens oriented side by side such that the tops of the screens are equal in global space, with the menubar on one screen, and a window straddles the two screens, the window's y position makes no sense.  The window's y position depends on what screen "most" of the window is on.  So if I move the window horizontally just a bit, the y position of my window is now different by the size of the menubar, even though the window was not moved vertically.

I'd like to reiterate that this was a fairly fundamental change (and a breaking change for us).  If SDL OSX is to really support multi-display configurations, this is especially problematic.

If the real concern is preventing windows from going under the menubar, then perhaps a solution involving something like overriding [NSWindow constrainFrameRect] would be less problematic than redefining the global window coord space for the main display.
This commit is contained in:
Sam Lantinga 2014-08-17 14:57:52 -07:00
parent de3d381cb6
commit 5e50180415
2 changed files with 22 additions and 41 deletions
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46
src/video/cocoa/SDL_cocoamouse.m
View file

@ -207,42 +207,18 @@ Cocoa_ShowCursor(SDL_Cursor * cursor)
return 0;
}
static void
Cocoa_WarpMouse(SDL_Window * window, int x, int y)
{
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
if ([data->listener isMoving]) {
DLog("Postponing warp, window being moved.");
[data->listener setPendingMoveX:x
Y:y];
return;
}
SDL_Mouse *mouse = SDL_GetMouse();
CGPoint point = CGPointMake(x + (float)window->x, y + (float)window->y);
Cocoa_HandleMouseWarp(point.x, point.y);
/* According to the docs, this was deprecated in 10.6, but it's still
* around. The substitute requires a CGEventSource, but I'm not entirely
* sure how we'd procure the right one for this event.
*/
CGSetLocalEventsSuppressionInterval(0.0);
CGWarpMouseCursorPosition(point);
CGSetLocalEventsSuppressionInterval(0.25);
if (!mouse->relative_mode) {
/* CGWarpMouseCursorPosition doesn't generate a window event, unlike our
* other implementations' APIs.
*/
SDL_SendMouseMotion(mouse->focus, mouse->mouseID, 0, x, y);
}
}
static void
Cocoa_WarpMouseGlobal(int x, int y)
{
SDL_Mouse *mouse = SDL_GetMouse();
if (mouse->focus) {
SDL_WindowData *data = (SDL_WindowData *) mouse->focus->driverdata;
if ([data->listener isMoving]) {
DLog("Postponing warp, window being moved.");
[data->listener setPendingMoveX:x Y:y];
return;
}
}
CGPoint point = CGPointMake((float)x, (float)y);
Cocoa_HandleMouseWarp(point.x, point.y);
@ -263,6 +239,12 @@ Cocoa_WarpMouseGlobal(int x, int y)
}
}
static void
Cocoa_WarpMouse(SDL_Window * window, int x, int y)
{
Cocoa_WarpMouseGlobal(x + window->x, y + window->y);
}
static int
Cocoa_SetRelativeMouseMode(SDL_bool enabled)
{

17
src/video/cocoa/SDL_cocoawindow.m
View file

@ -103,8 +103,7 @@ static Uint32 s_moveHack;
static void ConvertNSRect(NSScreen *screen, BOOL fullscreen, NSRect *r)
{
NSRect visibleScreen = fullscreen ? [screen frame] : [screen visibleFrame];
r->origin.y = (visibleScreen.origin.y + visibleScreen.size.height) - r->origin.y - r->size.height;
r->origin.y = CGDisplayPixelsHigh(kCGDirectMainDisplay) - r->origin.y - r->size.height;
}
static void
@ -389,11 +388,11 @@ SetWindowStyle(SDL_Window * window, unsigned int style)
isMoving = NO;
SDL_Mouse *mouse = SDL_GetMouse();
if (pendingWindowWarpX >= 0 && pendingWindowWarpY >= 0) {
mouse->WarpMouse(_data->window, pendingWindowWarpX, pendingWindowWarpY);
pendingWindowWarpX = pendingWindowWarpY = -1;
if (pendingWindowWarpX != INT_MAX && pendingWindowWarpY != INT_MAX) {
mouse->WarpMouseGlobal(pendingWindowWarpX, pendingWindowWarpY);
pendingWindowWarpX = pendingWindowWarpY = INT_MAX;
}
if (mouse->relative_mode && SDL_GetMouseFocus() == _data->window) {
if (mouse->relative_mode && !mouse->relative_mode_warp && mouse->focus == _data->window) {
mouse->SetRelativeMouseMode(SDL_TRUE);
}
}
@ -413,7 +412,7 @@ SetWindowStyle(SDL_Window * window, unsigned int style)
- (void)windowWillMove:(NSNotification *)aNotification
{
if ([_data->nswindow isKindOfClass:[SDLWindow class]]) {
pendingWindowWarpX = pendingWindowWarpY = -1;
pendingWindowWarpX = pendingWindowWarpY = INT_MAX;
isMoving = YES;
}
}
@ -500,7 +499,7 @@ SetWindowStyle(SDL_Window * window, unsigned int style)
{
SDL_Window *window = _data->window;
SDL_Mouse *mouse = SDL_GetMouse();
if (mouse->relative_mode && ![self isMoving]) {
if (mouse->relative_mode && !mouse->relative_mode_warp && ![self isMoving]) {
mouse->SetRelativeMouseMode(SDL_TRUE);
}
@ -532,7 +531,7 @@ SetWindowStyle(SDL_Window * window, unsigned int style)
- (void)windowDidResignKey:(NSNotification *)aNotification
{
SDL_Mouse *mouse = SDL_GetMouse();
if (mouse->relative_mode) {
if (mouse->relative_mode && !mouse->relative_mode_warp) {
mouse->SetRelativeMouseMode(SDL_FALSE);
}