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Better implementation of SDL_SetWindowMouseGrab() and SDL_SetWindowMouseRect() on macOS

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This commit is contained in:
Sam Lantinga 2021-11-12 03:00:57 -08:00
parent fa3330baec
commit 35d90f17e1
1 changed files with 78 additions and 29 deletions
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93
src/video/cocoa/SDL_cocoawindow.m
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@ -59,6 +59,11 @@
#define NSAppKitVersionNumber10_14 1671
#endif
/* This is available as of 10.13.2, but isn't in public headers */
@interface NSWindow (SDL)
@property (nonatomic) NSRect mouseConfinementRect;
@end
@interface SDLWindow : NSWindow <NSDraggingDestination>
/* These are needed for borderless/fullscreen windows */
- (BOOL)canBecomeKeyWindow;
@ -381,6 +386,60 @@ AdjustCoordinatesForGrab(SDL_Window * window, int x, int y, CGPoint *adjusted)
return SDL_FALSE;
}
static void
Cocoa_UpdateClipCursor(SDL_Window * window)
{
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
if (@available(macOS 10.13.2, *)) {
NSWindow *nswindow = data->nswindow;
SDL_Rect mouse_rect;
SDL_zero(mouse_rect);
if (ShouldAdjustCoordinatesForGrab(window)) {
SDL_Rect window_rect;
window_rect.x = 0;
window_rect.y = 0;
window_rect.w = window->w;
window_rect.h = window->h;
if (window->mouse_rect.w > 0 && window->mouse_rect.h > 0) {
SDL_IntersectRect(&window->mouse_rect, &window_rect, &mouse_rect);
}
if ((window->flags & SDL_WINDOW_MOUSE_GRABBED) != 0 &&
SDL_RectEmpty(&mouse_rect)) {
SDL_memcpy(&mouse_rect, &window_rect, sizeof(mouse_rect));
}
}
if (SDL_RectEmpty(&mouse_rect)) {
nswindow.mouseConfinementRect = NSZeroRect;
} else {
NSRect rect;
rect.origin.x = mouse_rect.x;
rect.origin.y = [nswindow contentLayoutRect].size.height - mouse_rect.y - mouse_rect.h;
rect.size.width = mouse_rect.w;
rect.size.height = mouse_rect.h;
data->nswindow.mouseConfinementRect = rect;
}
} else {
/* Move the cursor to the nearest point in the window */
if (ShouldAdjustCoordinatesForGrab(window)) {
int x, y;
CGPoint cgpoint;
SDL_GetGlobalMouseState(&x, &y);
if (AdjustCoordinatesForGrab(window, x, y, &cgpoint)) {
Cocoa_HandleMouseWarp(cgpoint.x, cgpoint.y);
CGDisplayMoveCursorToPoint(kCGDirectMainDisplay, cgpoint);
}
}
}
}
@implementation Cocoa_WindowListener
@ -628,6 +687,8 @@ AdjustCoordinatesForGrab(SDL_Window * window, int x, int y, CGPoint *adjusted)
}
mouse->SetRelativeMouseMode(SDL_TRUE);
} else {
Cocoa_UpdateClipCursor(_data->window);
}
}
}
@ -726,6 +787,10 @@ AdjustCoordinatesForGrab(SDL_Window * window, int x, int y, CGPoint *adjusted)
- (void)windowDidMiniaturize:(NSNotification *)aNotification
{
if (focusClickPending) {
focusClickPending = 0;
[self onMovingOrFocusClickPendingStateCleared];
}
SDL_SendWindowEvent(_data->window, SDL_WINDOWEVENT_MINIMIZED, 0, 0);
}
@ -1215,6 +1280,9 @@ AdjustCoordinatesForGrab(SDL_Window * window, int x, int y, CGPoint *adjusted)
x = (int)point.x;
y = (int)(window->h - point.y);
if (@available(macOS 10.13.2, *)) {
/* Mouse grab is taken care of by the confinement rect */
} else {
CGPoint cgpoint;
if (ShouldAdjustCoordinatesForGrab(window) &&
AdjustCoordinatesForGrab(window, window->x + x, window->y + y, &cgpoint)) {
@ -1222,6 +1290,7 @@ AdjustCoordinatesForGrab(SDL_Window * window, int x, int y, CGPoint *adjusted)
CGDisplayMoveCursorToPoint(kCGDirectMainDisplay, cgpoint);
CGAssociateMouseAndMouseCursorPosition(YES);
}
}
SDL_SendMouseMotion(window, mouseID, 0, x, y);
}
@ -2094,17 +2163,7 @@ Cocoa_GetWindowGammaRamp(_THIS, SDL_Window * window, Uint16 * ramp)
void
Cocoa_SetWindowMouseRect(_THIS, SDL_Window * window)
{
/* Move the cursor to the nearest point in the mouse rect */
if (ShouldAdjustCoordinatesForGrab(window)) {
int x, y;
CGPoint cgpoint;
SDL_GetGlobalMouseState(&x, &y);
if (AdjustCoordinatesForGrab(window, x, y, &cgpoint)) {
Cocoa_HandleMouseWarp(cgpoint.x, cgpoint.y);
CGDisplayMoveCursorToPoint(kCGDirectMainDisplay, cgpoint);
}
}
Cocoa_UpdateClipCursor(window);
}
void
@ -2112,17 +2171,7 @@ Cocoa_SetWindowMouseGrab(_THIS, SDL_Window * window, SDL_bool grabbed)
{
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
/* Move the cursor to the nearest point in the window */
if (ShouldAdjustCoordinatesForGrab(window)) {
int x, y;
CGPoint cgpoint;
SDL_GetGlobalMouseState(&x, &y);
if (AdjustCoordinatesForGrab(window, x, y, &cgpoint)) {
Cocoa_HandleMouseWarp(cgpoint.x, cgpoint.y);
CGDisplayMoveCursorToPoint(kCGDirectMainDisplay, cgpoint);
}
}
Cocoa_UpdateClipCursor(window);
if (data && (window->flags & SDL_WINDOW_FULLSCREEN)) {
if (SDL_ShouldAllowTopmost() && (window->flags & SDL_WINDOW_INPUT_FOCUS)