kc3-lang/SDL

diff --git a/src/video/cocoa/SDL_cocoamouse.m b/src/video/cocoa/SDL_cocoamouse.m
index 56f6796..12f506c 100644
--- a/src/video/cocoa/SDL_cocoamouse.m
+++ b/src/video/cocoa/SDL_cocoamouse.m
@@ -29,6 +29,14 @@
 
 #include "../../events/SDL_mouse_c.h"
 
+/* #define DEBUG_COCOAMOUSE */
+
+#ifdef DEBUG_COCOAMOUSE
+#define DLog(fmt, ...) printf("%s: " fmt "\n", __func__, ##__VA_ARGS__)
+#else
+#define DLog(...) do { } while (0)
+#endif
+
 @implementation NSCursor (InvisibleCursor)
 + (NSCursor *)invisibleCursor
 {
@@ -203,6 +211,15 @@ Cocoa_ShowCursor(SDL_Cursor * cursor)
 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);
 
@@ -214,6 +231,7 @@ Cocoa_WarpMouse(SDL_Window * window, int x, int y)
         NSPoint location =  [NSEvent mouseLocation];
         driverdata->deltaXOffset = location.x - point.x;
         driverdata->deltaYOffset = point.y - location.y;
+        DLog("Warp to (%g, %g), offsetting next movement event by (%i, %i)", point.x, point.y, driverdata->deltaXOffset, driverdata->deltaYOffset);
     }
 
     /* According to the docs, this was deprecated in 10.6, but it's still
@@ -238,8 +256,10 @@ Cocoa_SetRelativeMouseMode(SDL_bool enabled)
     CGError result;
 
     if (enabled) {
+        DLog("Turning on.");
         result = CGAssociateMouseAndMouseCursorPosition(NO);
     } else {
+        DLog("Turning off.");
         result = CGAssociateMouseAndMouseCursorPosition(YES);
     }
     if (result != kCGErrorSuccess) {
@@ -272,18 +292,42 @@ Cocoa_HandleMouseEvent(_THIS, NSEvent *event)
 {
     SDL_Mouse *mouse = SDL_GetMouse();
 
-    if (mouse->relative_mode &&
-        ([event type] == NSMouseMoved ||
-         [event type] == NSLeftMouseDragged ||
-         [event type] == NSRightMouseDragged ||
-         [event type] == NSOtherMouseDragged)) {
-        SDL_MouseData *driverdata = (SDL_MouseData*)mouse->driverdata;
-        float x = [event deltaX] + driverdata->deltaXOffset;
-        float y = [event deltaY] + driverdata->deltaYOffset;
-        driverdata->deltaXOffset = driverdata->deltaYOffset = 0;
+    /* Non-relative movement is handled in -[Cocoa_WindowListener mouseMoved:] */
+    if (!mouse->relative_mode) {
+        return;
+    }
 
-        SDL_SendMouseMotion(mouse->focus, mouse->mouseID, 1, (int)x, (int)y);
+    switch ([event type])
+    {
+        case NSMouseMoved:
+        case NSLeftMouseDragged:
+        case NSRightMouseDragged:
+        case NSOtherMouseDragged:
+            break;
+
+        default:
+            /* Ignore any other events. */
+            return;
+    }
+
+    /* Ignore events that aren't inside the client area (i.e. title bar.) */
+    if ([event window]) {
+        NSRect windowRect = [[[event window] contentView] frame];
+        if (!NSPointInRect([event locationInWindow], windowRect)) {
+            return;
+        }
     }
+
+    SDL_MouseData *driverdata = (SDL_MouseData*)mouse->driverdata;
+    float x = [event deltaX] + driverdata->deltaXOffset;
+    float y = [event deltaY] + driverdata->deltaYOffset;
+    driverdata->deltaXOffset = driverdata->deltaYOffset = 0;
+
+    if (driverdata->deltaYOffset > 0 || driverdata->deltaXOffset > 0) {
+        DLog("Relative move was (%g, %g), offset to (%g, %g)", [event deltaX], [event deltaY], x, y);
+    }
+
+    SDL_SendMouseMotion(mouse->focus, mouse->mouseID, 1, (int)x, (int)y);
 }
 
 void
diff --git a/src/video/cocoa/SDL_cocoawindow.h b/src/video/cocoa/SDL_cocoawindow.h
index 65e0d4b..4f88ce1 100644
--- a/src/video/cocoa/SDL_cocoawindow.h
+++ b/src/video/cocoa/SDL_cocoawindow.h
@@ -43,6 +43,8 @@ typedef enum
     BOOL isFullscreenSpace;
     BOOL inFullscreenTransition;
     PendingWindowOperation pendingWindowOperation;
+    BOOL isMoving;
+    int pendingWindowWarpX, pendingWindowWarpY;
 }
 
 -(void) listen:(SDL_WindowData *) data;
@@ -54,6 +56,10 @@ typedef enum
 -(void) addPendingWindowOperation:(PendingWindowOperation) operation;
 -(void) close;
 
+-(BOOL) isMoving;
+-(void) setPendingMoveX:(int)x Y:(int)y;
+-(void) windowDidFinishMoving;
+
 /* Window delegate functionality */
 -(BOOL) windowShouldClose:(id) sender;
 -(void) windowDidExpose:(NSNotification *) aNotification;
@@ -105,6 +111,7 @@ struct SDL_WindowData
     NSWindow *nswindow;
     NSMutableArray *nscontexts;
     SDL_bool created;
+    SDL_bool inWindowMove;
     Cocoa_WindowListener *listener;
     struct SDL_VideoData *videodata;
 };
diff --git a/src/video/cocoa/SDL_cocoawindow.m b/src/video/cocoa/SDL_cocoawindow.m
index a773cb6..e391ea7 100644
--- a/src/video/cocoa/SDL_cocoawindow.m
+++ b/src/video/cocoa/SDL_cocoawindow.m
@@ -39,6 +39,44 @@
 #include "SDL_cocoamouse.h"
 #include "SDL_cocoaopengl.h"
 
+@interface SDLWindow : NSWindow
+/* These are needed for borderless/fullscreen windows */
+- (BOOL)canBecomeKeyWindow;
+- (BOOL)canBecomeMainWindow;
+- (void)sendEvent:(NSEvent *)event;
+@end
+
+@implementation SDLWindow
+- (BOOL)canBecomeKeyWindow
+{
+    return YES;
+}
+
+- (BOOL)canBecomeMainWindow
+{
+    return YES;
+}
+
+- (void)sendEvent:(NSEvent *)event
+{
+  [super sendEvent:event];
+
+  if ([event type] != NSLeftMouseUp) {
+      return;
+  }
+
+  id delegate = [self delegate];
+  if (![delegate isKindOfClass:[Cocoa_WindowListener class]]) {
+      return;
+  }
+
+  if ([delegate isMoving]) {
+      [delegate windowDidFinishMoving];
+  }
+}
+@end
+
+
 static Uint32 s_moveHack;
 
 static void ConvertNSRect(NSRect *r)
@@ -130,6 +168,7 @@ SetWindowStyle(SDL_Window * window, unsigned int style)
     isFullscreenSpace = NO;
     inFullscreenTransition = NO;
     pendingWindowOperation = PENDING_OPERATION_NONE;
+    isMoving = NO;
 
     center = [NSNotificationCenter defaultCenter];
 
@@ -315,6 +354,34 @@ SetWindowStyle(SDL_Window * window, unsigned int style)
     }
 }
 
+- (BOOL)isMoving
+{
+    return isMoving;
+}
+
+-(void) setPendingMoveX:(int)x Y:(int)y
+{
+    pendingWindowWarpX = x;
+    pendingWindowWarpY = y;
+}
+
+- (void)windowDidFinishMoving
+{
+    if ([self isMoving])
+    {
+        isMoving = NO;
+
+        SDL_Mouse *mouse = SDL_GetMouse();
+        if (pendingWindowWarpX >= 0 && pendingWindowWarpY >= 0) {
+            mouse->WarpMouse(_data->window, pendingWindowWarpX, pendingWindowWarpY);
+            pendingWindowWarpX = pendingWindowWarpY = -1;
+        }
+        if (mouse->relative_mode && SDL_GetMouseFocus() == _data->window) {
+            mouse->SetRelativeMouseMode(SDL_TRUE);
+        }
+    }
+}
+
 - (BOOL)windowShouldClose:(id)sender
 {
     SDL_SendWindowEvent(_data->window, SDL_WINDOWEVENT_CLOSE, 0, 0);
@@ -326,6 +393,14 @@ SetWindowStyle(SDL_Window * window, unsigned int style)
     SDL_SendWindowEvent(_data->window, SDL_WINDOWEVENT_EXPOSED, 0, 0);
 }
 
+- (void)windowWillMove:(NSNotification *)aNotification
+{
+    if ([_data->nswindow isKindOfClass:[SDLWindow class]]) {
+        pendingWindowWarpX = pendingWindowWarpY = -1;
+        isMoving = YES;
+    }
+}
+
 - (void)windowDidMove:(NSNotification *)aNotification
 {
     int x, y;
@@ -407,6 +482,9 @@ SetWindowStyle(SDL_Window * window, unsigned int style)
 {
     SDL_Window *window = _data->window;
     SDL_Mouse *mouse = SDL_GetMouse();
+    if (mouse->relative_mode && ![self isMoving]) {
+        mouse->SetRelativeMouseMode(SDL_TRUE);
+    }
 
     /* We're going to get keyboard events, since we're key. */
     SDL_SetKeyboardFocus(window);
@@ -431,6 +509,11 @@ SetWindowStyle(SDL_Window * window, unsigned int style)
 
 - (void)windowDidResignKey:(NSNotification *)aNotification
 {
+    SDL_Mouse *mouse = SDL_GetMouse();
+    if (mouse->relative_mode) {
+        mouse->SetRelativeMouseMode(SDL_FALSE);
+    }
+
     /* Some other window will get mouse events, since we're not key. */
     if (SDL_GetMouseFocus() == _data->window) {
         SDL_SetMouseFocus(NULL);
@@ -624,8 +707,6 @@ SetWindowStyle(SDL_Window * window, unsigned int style)
 
     if (x < 0 || x >= window->w || y < 0 || y >= window->h) {
         if (window->flags & SDL_WINDOW_INPUT_GRABBED) {
-            CGPoint cgpoint;
-
             if (x < 0) {
                 x = 0;
             } else if (x >= window->w) {
@@ -638,6 +719,8 @@ SetWindowStyle(SDL_Window * window, unsigned int style)
             }
 
 #if !SDL_MAC_NO_SANDBOX
+            CGPoint cgpoint;
+
             /* When SDL_MAC_NO_SANDBOX is set, this is handled by
              * SDL_cocoamousetap.m.
              */
@@ -754,24 +837,6 @@ SetWindowStyle(SDL_Window * window, unsigned int style)
 
 @end
 
-@interface SDLWindow : NSWindow
-/* These are needed for borderless/fullscreen windows */
-- (BOOL)canBecomeKeyWindow;
-- (BOOL)canBecomeMainWindow;
-@end
-
-@implementation SDLWindow
-- (BOOL)canBecomeKeyWindow
-{
-    return YES;
-}
-
-- (BOOL)canBecomeMainWindow
-{
-    return YES;
-}
-@end
-
 @interface SDLView : NSView
 
 /* The default implementation doesn't pass rightMouseDown to responder chain */
@@ -1338,7 +1403,8 @@ void
 Cocoa_SetWindowGrab(_THIS, SDL_Window * window, SDL_bool grabbed)
 {
     /* Move the cursor to the nearest point in the window */
-    if (grabbed) {
+    SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
+    if (grabbed && data && ![data->listener isMoving]) {
         int x, y;
         CGPoint cgpoint;