From: Ken Thomases <ken@codeweavers.com>
Subject: winemac: Send WM_SIZING messages during resizing to let app alter the proposed size.
Message-Id: <39352955-8F64-4772-8818-6BF36239196E@codeweavers.com>
Date: Wed, 23 Apr 2014 20:00:29 -0500

---
dlls/winemac.drv/cocoa_window.h |    2 +
dlls/winemac.drv/cocoa_window.m |   51 ++++++++++++++++++++++++++++++++++++++-
dlls/winemac.drv/event.c        |    4 +++
dlls/winemac.drv/macdrv.h       |    1 +
dlls/winemac.drv/macdrv_cocoa.h |    6 ++++
dlls/winemac.drv/window.c       |   40 ++++++++++++++++++++++++++++++
6 files changed, 103 insertions(+), 1 deletions(-)


diff --git a/dlls/winemac.drv/cocoa_window.h b/dlls/winemac.drv/cocoa_window.h
index a74f6da..68905a5 100644
--- a/dlls/winemac.drv/cocoa_window.h
+++ b/dlls/winemac.drv/cocoa_window.h
@@ -54,6 +54,8 @@ @interface WineWindow : NSPanel <NSWindowDelegate>
     NSUInteger lastModifierFlags;
 
     NSTimer* liveResizeDisplayTimer;
+    NSRect frameAtResizeStart;
+    BOOL resizingFromLeft, resizingFromTop;
 
     void* imeData;
     BOOL commandDone;
diff --git a/dlls/winemac.drv/cocoa_window.m b/dlls/winemac.drv/cocoa_window.m
index 7ead126..bb173e9 100644
--- a/dlls/winemac.drv/cocoa_window.m
+++ b/dlls/winemac.drv/cocoa_window.m
@@ -1809,7 +1809,17 @@ - (void)windowDidResignKey:(NSNotification *)notification
     - (void)windowDidResize:(NSNotification *)notification
     {
         macdrv_event* event;
-        NSRect frame = [self contentRectForFrameRect:[self frame]];
+        NSRect frame = [self frame];
+
+        if ([self inLiveResize])
+        {
+            if (NSMinX(frame) != NSMinX(frameAtResizeStart))
+                resizingFromLeft = TRUE;
+            if (NSMaxY(frame) != NSMaxY(frameAtResizeStart))
+                resizingFromTop = TRUE;
+        }
+
+        frame = [self contentRectForFrameRect:frame];
 
         if (ignore_windowResize || exitingFullScreen) return;
 
@@ -1899,6 +1909,42 @@ - (void)windowWillMiniaturize:(NSNotification *)notification
         [self becameIneligibleParentOrChild];
     }
 
+    - (NSSize) windowWillResize:(NSWindow*)sender toSize:(NSSize)frameSize
+    {
+        if ([self inLiveResize])
+        {
+            NSRect rect;
+            macdrv_query* query;
+
+            rect = [self frame];
+            if (resizingFromLeft)
+                rect.origin.x = NSMaxX(rect) - frameSize.width;
+            if (!resizingFromTop)
+                rect.origin.y = NSMaxY(rect) - frameSize.height;
+            rect.size = frameSize;
+            rect = [self contentRectForFrameRect:rect];
+            [[WineApplicationController sharedController] flipRect:&rect];
+
+            query = macdrv_create_query();
+            query->type = QUERY_RESIZE_SIZE;
+            query->window = (macdrv_window)[self retain];
+            query->resize_size.rect = NSRectToCGRect(rect);
+            query->resize_size.from_left = resizingFromLeft;
+            query->resize_size.from_top = resizingFromTop;
+
+            if ([self.queue query:query timeout:0.1])
+            {
+                rect = NSRectFromCGRect(query->resize_size.rect);
+                rect = [self frameRectForContentRect:rect];
+                frameSize = rect.size;
+            }
+
+            macdrv_release_query(query);
+        }
+
+        return frameSize;
+    }
+
     - (void) windowWillStartLiveResize:(NSNotification *)notification
     {
         macdrv_query* query = macdrv_create_query();
@@ -1908,6 +1954,9 @@ - (void) windowWillStartLiveResize:(NSNotification *)notification
         [self.queue query:query timeout:0.3];
         macdrv_release_query(query);
 
+        frameAtResizeStart = [self frame];
+        resizingFromLeft = resizingFromTop = FALSE;
+
         // There's a strange restriction in window redrawing during Cocoa-
         // managed window resizing.  Only calls to -[NSView setNeedsDisplay...]
         // that happen synchronously when Cocoa tells us that our window size
diff --git a/dlls/winemac.drv/event.c b/dlls/winemac.drv/event.c
index 5095c99..8e03080 100644
--- a/dlls/winemac.drv/event.c
+++ b/dlls/winemac.drv/event.c
@@ -162,6 +162,10 @@ static void macdrv_query_event(HWND hwnd, const macdrv_event *event)
             TRACE("QUERY_PASTEBOARD_DATA\n");
             success = query_pasteboard_data(hwnd, query->pasteboard_data.type);
             break;
+        case QUERY_RESIZE_SIZE:
+            TRACE("QUERY_RESIZE_SIZE\n");
+            success = query_resize_size(hwnd, query);
+            break;
         case QUERY_RESIZE_START:
             TRACE("QUERY_RESIZE_START\n");
             success = query_resize_start(hwnd);
diff --git a/dlls/winemac.drv/macdrv.h b/dlls/winemac.drv/macdrv.h
index 9ffeb40..56ca24f 100644
--- a/dlls/winemac.drv/macdrv.h
+++ b/dlls/winemac.drv/macdrv.h
@@ -173,6 +173,7 @@ static inline RECT rect_from_cgrect(CGRect cgrect)
 extern void macdrv_window_restore_requested(HWND hwnd) DECLSPEC_HIDDEN;
 extern void macdrv_window_drag_begin(HWND hwnd) DECLSPEC_HIDDEN;
 extern void macdrv_window_drag_end(HWND hwnd) DECLSPEC_HIDDEN;
+extern BOOL query_resize_size(HWND hwnd, macdrv_query *query) DECLSPEC_HIDDEN;
 extern BOOL query_resize_start(HWND hwnd) DECLSPEC_HIDDEN;
 extern BOOL query_min_max_info(HWND hwnd) DECLSPEC_HIDDEN;
 
diff --git a/dlls/winemac.drv/macdrv_cocoa.h b/dlls/winemac.drv/macdrv_cocoa.h
index 1550280..6dbaae1 100644
--- a/dlls/winemac.drv/macdrv_cocoa.h
+++ b/dlls/winemac.drv/macdrv_cocoa.h
@@ -298,6 +298,7 @@ extern int macdrv_set_display_mode(const struct macdrv_display* display,
     QUERY_DRAG_OPERATION,
     QUERY_IME_CHAR_RECT,
     QUERY_PASTEBOARD_DATA,
+    QUERY_RESIZE_SIZE,
     QUERY_RESIZE_START,
     QUERY_MIN_MAX_INFO,
     NUM_QUERY_TYPES
@@ -331,6 +332,11 @@ extern int macdrv_set_display_mode(const struct macdrv_display* display,
         struct {
             CFStringRef type;
         }                                           pasteboard_data;
+        struct {
+            CGRect          rect;
+            unsigned int    from_left : 1;
+            unsigned int    from_top : 1;
+        }                                           resize_size;
     };
 } macdrv_query;
 
diff --git a/dlls/winemac.drv/window.c b/dlls/winemac.drv/window.c
index 4678afc..6ef227c 100644
--- a/dlls/winemac.drv/window.c
+++ b/dlls/winemac.drv/window.c
@@ -2400,6 +2400,46 @@ fail:
 
 
 /***********************************************************************
+ *              query_resize_size
+ *
+ * Handler for QUERY_RESIZE_SIZE query.
+ */
+BOOL query_resize_size(HWND hwnd, macdrv_query *query)
+{
+    struct macdrv_win_data *data = get_win_data(hwnd);
+    RECT rect = rect_from_cgrect(query->resize_size.rect);
+    int corner;
+    BOOL ret = FALSE;
+
+    if (!data) return FALSE;
+
+    macdrv_mac_to_window_rect(data, &rect);
+
+    if (query->resize_size.from_left)
+    {
+        if (query->resize_size.from_top)
+            corner = WMSZ_TOPLEFT;
+        else
+            corner = WMSZ_BOTTOMLEFT;
+    }
+    else if (query->resize_size.from_top)
+        corner = WMSZ_TOPRIGHT;
+    else
+        corner = WMSZ_BOTTOMRIGHT;
+
+    if (SendMessageW(hwnd, WM_SIZING, corner, (LPARAM)&rect))
+    {
+        macdrv_window_to_mac_rect(data, GetWindowLongW(hwnd, GWL_STYLE), &rect);
+        query->resize_size.rect = cgrect_from_rect(rect);
+        ret = TRUE;
+    }
+
+    release_win_data(data);
+    return ret;
+}
+
+
+/***********************************************************************
  *              query_resize_start
  *
  * Handler for QUERY_RESIZE_START query.