Fix a few mac windowed mode settings (#14942)

* Use "Remember window position and size" setting (fixes #14806)
* Implement window opacity
* Enable "Show window decorations" toggle
* Hide "Disable composition" option (osx does not support disabling composition)

gfx/video_driver.c

@@ -3338,7 +3338,8 @@ bool video_driver_init_internal(bool *video_is_threaded, bool verbosity_enabled)
       else
 #endif
       {
-#if defined(_WIN32) && !defined(_XBOX) && !defined(__WINRT__)
+#if (defined(_WIN32) && !defined(_XBOX) && !defined(__WINRT__)) ||  \
+    (defined(HAVE_COCOA_METAL) && !defined(HAVE_COCOATOUCH))
          bool window_custom_size_enable = settings->bools.video_window_save_positions;
 #else
          bool window_custom_size_enable = settings->bools.video_window_custom_size_enable;

menu/menu_displaylist.c

@@ -8591,7 +8591,9 @@ unsigned menu_displaylist_build_list(
                {MENU_ENUM_LABEL_MOUSE_ENABLE,                                          PARSE_ONLY_BOOL,   true},
                {MENU_ENUM_LABEL_POINTER_ENABLE,                                        PARSE_ONLY_BOOL,   true},
                {MENU_ENUM_LABEL_THREADED_DATA_RUNLOOP_ENABLE,                          PARSE_ONLY_BOOL,   true},
+#if !defined(OSX)
                {MENU_ENUM_LABEL_VIDEO_DISABLE_COMPOSITION,                             PARSE_ONLY_BOOL,   true},
+#endif
 #if defined(HAVE_QT) || defined(HAVE_COCOA)
                {MENU_ENUM_LABEL_UI_COMPANION_ENABLE,                                   PARSE_ONLY_BOOL,   true},
                {MENU_ENUM_LABEL_UI_COMPANION_START_ON_BOOT,                            PARSE_ONLY_BOOL,   true},
@@ -8677,13 +8679,15 @@ unsigned menu_displaylist_build_list(
          break;
       case DISPLAYLIST_VIDEO_WINDOWED_MODE_SETTINGS_LIST:
          {
-#if defined(_WIN32) && !defined(_XBOX) && !defined(__WINRT__)
+#if (defined(_WIN32) && !defined(_XBOX) && !defined(__WINRT__)) ||  \
+    (defined(HAVE_COCOA_METAL) && !defined(HAVE_COCOATOUCH))
             bool window_custom_size_enable = settings->bools.video_window_save_positions;
 #else
             bool window_custom_size_enable = settings->bools.video_window_custom_size_enable;
 #endif
             menu_displaylist_build_info_selective_t build_list[] = {
-#if defined(_WIN32) && !defined(_XBOX) && !defined(__WINRT__)
+#if (defined(_WIN32) && !defined(_XBOX) && !defined(__WINRT__)) ||  \
+    (defined(HAVE_COCOA_METAL) && !defined(HAVE_COCOATOUCH))
                {MENU_ENUM_LABEL_VIDEO_WINDOW_SAVE_POSITION,      PARSE_ONLY_BOOL,  true },
 #else
                {MENU_ENUM_LABEL_VIDEO_WINDOW_CUSTOM_SIZE_ENABLE, PARSE_ONLY_BOOL,  true },

menu/menu_setting.c

@@ -12535,7 +12535,10 @@ static bool setting_append_list(
                general_read_handler,
                SD_FLAG_NONE);
          MENU_SETTINGS_LIST_CURRENT_ADD_CMD(list, list_info, CMD_EVENT_REINIT);
+#endif
 
+#if (defined(_WIN32) && !defined(_XBOX) && !defined(__WINRT__)) ||  \
+    (defined(HAVE_COCOA_METAL) && !defined(HAVE_COCOATOUCH))
             CONFIG_BOOL(
                   list, list_info,
                   &settings->bools.video_window_save_positions,

ui/drivers/cocoa/apple_platform.h

@@ -17,6 +17,7 @@ typedef enum apple_view_type
 
 #if defined(HAVE_COCOA_METAL) && !defined(HAVE_COCOATOUCH)
 @interface WindowListener : NSResponder<NSWindowDelegate>
+@property (nonatomic) NSWindow* window;
 @end
 #endif
 
@@ -37,6 +38,9 @@ typedef enum apple_view_type
  * the displays should not sleep.
  */
 - (bool)setDisableDisplaySleep:(bool)disable;
+#if defined(HAVE_COCOA_METAL) && !defined(HAVE_COCOATOUCH)
+- (void)updateWindowedMode;
+#endif
 @end
 
 #endif

ui/drivers/cocoa/cocoa_common.m

@@ -647,16 +647,3 @@ bool cocoa_get_metrics(
    return true;
 }
 #endif
-
-#if defined(HAVE_COCOA_METAL) && !defined(HAVE_COCOATOUCH)
-@implementation WindowListener
-
-/* Similarly to SDL, we'll respond to key events 
- * by doing nothing so we don't beep.
- */
-- (void)flagsChanged:(NSEvent *)event { }
-- (void)keyDown:(NSEvent *)event { }
-- (void)keyUp:(NSEvent *)event { }
-
-@end
-#endif

ui/drivers/ui_cocoa.m

@@ -511,6 +511,59 @@ static ui_application_t ui_application_cocoa = {
 
 @end
 
+#if defined(HAVE_COCOA_METAL)
+@implementation WindowListener
+
+/* Similarly to SDL, we'll respond to key events
+ * by doing nothing so we don't beep.
+ */
+- (void)flagsChanged:(NSEvent *)event { }
+- (void)keyDown:(NSEvent *)event { }
+- (void)keyUp:(NSEvent *)event { }
+
+- (void)windowDidBecomeKey:(NSNotification *)notification
+{
+    [apple_platform updateWindowedMode];
+}
+
+- (void)windowDidMove:(NSNotification *)notification
+{
+   settings_t *settings             = config_get_ptr();
+   bool window_save_positions       = settings->bools.video_window_save_positions;
+   BOOL is_fullscreen = (self.window.styleMask
+         & NSWindowStyleMaskFullScreen) == NSWindowStyleMaskFullScreen;
+
+   if (!window_save_positions || is_fullscreen)
+       return;
+
+   NSRect frame = self.window.frame;
+   settings->uints.window_position_x      = (unsigned)frame.origin.x;
+   settings->uints.window_position_y      = (unsigned)frame.origin.y;
+   settings->uints.window_position_width  = (unsigned)frame.size.width;
+   settings->uints.window_position_height = (unsigned)frame.size.height;
+}
+
+- (void)windowDidResize:(NSNotification *)notification
+{
+   settings_t *settings             = config_get_ptr();
+   bool window_save_positions       = settings->bools.video_window_save_positions;
+   BOOL is_fullscreen = (self.window.styleMask
+         & NSWindowStyleMaskFullScreen) == NSWindowStyleMaskFullScreen;
+
+   if (!window_save_positions || is_fullscreen)
+       return;
+
+   NSRect frame = self.window.frame;
+   settings->uints.window_position_x      = (unsigned)frame.origin.x;
+   settings->uints.window_position_y      = (unsigned)frame.origin.y;
+   settings->uints.window_position_width  = (unsigned)frame.size.width;
+   settings->uints.window_position_height = (unsigned)frame.size.height;
+}
+
+@end
+#endif
+
+
 @implementation RetroArch_OSX
 
 @synthesize window = _window;
@@ -537,6 +590,7 @@ static ui_application_t ui_application_cocoa = {
 
 #ifdef HAVE_COCOA_METAL
    _listener = [WindowListener new];
+   _listener.window = self.window;
 
    [self.window setNextResponder:_listener];
    self.window.delegate = _listener;
@@ -635,6 +689,7 @@ static ui_application_t ui_application_cocoa = {
       if (!is_fullscreen)
       {
          [self.window toggleFullScreen:self];
+         self.window.alphaValue = 1;
          return;
       }
    }
@@ -642,12 +697,51 @@ static ui_application_t ui_application_cocoa = {
    {
       if (is_fullscreen)
          [self.window toggleFullScreen:self];
+      [self updateWindowedSize:mode];
+      [self updateWindowedMode];
    }
 
-   /* HACK(sgc): ensure MTKView posts a drawable resize event */
+   [self.window displayIfNeeded];
-   if (mode.width > 0)
+}
-      [self.window setContentSize:NSMakeSize(mode.width-1, mode.height)];
+
-   [self.window setContentSize:NSMakeSize(mode.width, mode.height)];
+- (void)updateWindowedSize:(gfx_ctx_mode_t)mode
+{
+   settings_t *settings             = config_get_ptr();
+   bool windowed_full               = settings->bools.video_windowed_fullscreen;
+   bool window_save_positions       = settings->bools.video_window_save_positions;
+
+   if (windowed_full)
+       return;
+
+   if (window_save_positions)
+   {
+      NSRect frame;
+      frame.origin.x    = settings->uints.window_position_x;
+      frame.origin.y    = settings->uints.window_position_y;
+      frame.size.width  = settings->uints.window_position_width;
+      frame.size.height = settings->uints.window_position_height;
+      [self.window setFrame:frame display:YES];
+   }
+   else
+      [self.window setContentSize:NSMakeSize(mode.width, mode.height)];
+}
+
+- (void)updateWindowedMode
+{
+   settings_t *settings      = config_get_ptr();
+   bool windowed_full        = settings->bools.video_windowed_fullscreen;
+   bool show_decorations     = settings->bools.video_window_show_decorations;
+   CGFloat opacity           = (CGFloat)settings->uints.video_window_opacity / (CGFloat)100.0;
+
+   if (windowed_full || !self.window.keyWindow)
+       return;
+
+   if (show_decorations)
+       self.window.styleMask |= NSWindowStyleMaskTitled;
+   else
+       self.window.styleMask &= ~NSWindowStyleMaskTitled;
+
+   self.window.alphaValue = opacity;
 }
 
 - (void)setCursorVisible:(bool)v