Added events for dynamically connecting and disconnecting displays, with an iOS implementation

Xcode-iOS/Test/TestiPhoneOS.xcodeproj/project.pbxproj

@@ -1795,6 +1795,9 @@
 					FABA34961D8B582100915323 = {
 						ProvisioningStyle = Automatic;
 					};
+					FDD2C53D0E2E80E400B7A85F = {
+						DevelopmentTeam = MXGJJ98X76;
+					};
 				};
 			};
 			buildConfigurationList = C01FCF4E08A954540054247B /* Build configuration list for PBXProject "TestiPhoneOS" */;
@@ -2865,6 +2868,7 @@
 		FDD2C54C0E2E80E400B7A85F /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				DEVELOPMENT_TEAM = MXGJJ98X76;
 				INFOPLIST_FILE = Info.plist;
 				PRODUCT_NAME = testsprite2;
 			};
@@ -2873,6 +2877,7 @@
 		FDD2C54D0E2E80E400B7A85F /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				DEVELOPMENT_TEAM = MXGJJ98X76;
 				INFOPLIST_FILE = Info.plist;
 				PRODUCT_NAME = testsprite2;
 			};

include/SDL_video.h

@@ -175,7 +175,9 @@ typedef enum
 typedef enum
 {
     SDL_DISPLAYEVENT_NONE,          /**< Never used */
-    SDL_DISPLAYEVENT_ORIENTATION    /**< Display orientation has changed to data1 */
+    SDL_DISPLAYEVENT_ORIENTATION,   /**< Display orientation has changed to data1 */
+    SDL_DISPLAYEVENT_CONNECTED,     /**< Display has been added to the system */
+    SDL_DISPLAYEVENT_DISCONNECTED,  /**< Display has been removed from the system */
 } SDL_DisplayEventID;
 
 typedef enum

src/video/SDL_sysvideo.h

@@ -439,7 +439,8 @@ extern VideoBootStrap OFFSCREEN_bootstrap;
 
 extern SDL_VideoDevice *SDL_GetVideoDevice(void);
 extern int SDL_AddBasicVideoDisplay(const SDL_DisplayMode * desktop_mode);
-extern int SDL_AddVideoDisplay(const SDL_VideoDisplay * display);
+extern int SDL_AddVideoDisplay(const SDL_VideoDisplay * display, SDL_bool send_event);
+extern void SDL_DelVideoDisplay(int index);
 extern SDL_bool SDL_AddDisplayMode(SDL_VideoDisplay *display, const SDL_DisplayMode * mode);
 extern int SDL_GetIndexOfDisplay(SDL_VideoDisplay *display);
 extern SDL_VideoDisplay *SDL_GetDisplay(int displayIndex);

src/video/SDL_video.c

@@ -595,11 +595,11 @@ SDL_AddBasicVideoDisplay(const SDL_DisplayMode * desktop_mode)
     }
     display.current_mode = display.desktop_mode;
 
-    return SDL_AddVideoDisplay(&display);
+    return SDL_AddVideoDisplay(&display, SDL_FALSE);
 }
 
 int
-SDL_AddVideoDisplay(const SDL_VideoDisplay * display)
+SDL_AddVideoDisplay(const SDL_VideoDisplay * display, SDL_bool send_event)
 {
     SDL_VideoDisplay *displays;
     int index = -1;
@@ -621,12 +621,31 @@ SDL_AddVideoDisplay(const SDL_VideoDisplay * display)
             SDL_itoa(index, name, 10);
             displays[index].name = SDL_strdup(name);
         }
+
+		if (send_event) {
+			SDL_SendDisplayEvent(&_this->displays[index], SDL_DISPLAYEVENT_CONNECTED, 0);
+		}
     } else {
         SDL_OutOfMemory();
     }
     return index;
 }
 
+void
+SDL_DelVideoDisplay(int index)
+{
+	if (index < 0 || index >= _this->num_displays) {
+		return;
+	}
+
+	SDL_SendDisplayEvent(&_this->displays[index], SDL_DISPLAYEVENT_DISCONNECTED, 0);
+
+	if (index < (_this->num_displays - 1)) {
+		SDL_memmove(&_this->displays[index], &_this->displays[index+1], (_this->num_displays - index - 1)*sizeof(_this->displays[index]));
+	}
+	--_this->num_displays;
+}
+
 int
 SDL_GetNumVideoDisplays(void)
 {

src/video/cocoa/SDL_cocoamodes.m

@@ -389,7 +389,7 @@ Cocoa_InitModes(_THIS)
             display.desktop_mode = mode;
             display.current_mode = mode;
             display.driverdata = displaydata;
-            SDL_AddVideoDisplay(&display);
+            SDL_AddVideoDisplay(&display, SDL_FALSE);
             SDL_free(display.name);
         }
     }

src/video/directfb/SDL_DirectFB_modes.c

@@ -258,7 +258,7 @@ DirectFB_InitModes(_THIS)
 
         SDL_DFB_CHECKERR(layer->SetCooperativeLevel(layer, DLSCL_SHARED));
 
-        SDL_AddVideoDisplay(&display);
+        SDL_AddVideoDisplay(&display, SDL_FALSE);
     }
     SDL_DFB_FREE(screencbdata);
     return;

src/video/haiku/SDL_bmodes.cc

@@ -228,7 +228,7 @@ static void _AddDisplay(BScreen *screen) {
     display.desktop_mode = *mode;
     display.current_mode = *mode;
     
-    SDL_AddVideoDisplay(&display);
+    SDL_AddVideoDisplay(&display, SDL_FALSE);
 }
 
 /*

src/video/kmsdrm/SDL_kmsdrmvideo.c

@@ -1262,7 +1262,7 @@ KMSDRM_VideoInit(_THIS)
 
     display.current_mode = display.desktop_mode;
     display.driverdata = dispdata;
-    SDL_AddVideoDisplay(&display);
+    SDL_AddVideoDisplay(&display, SDL_FALSE);
 
     /****************/
     /* Atomic block */

src/video/pandora/SDL_pandora.c

@@ -173,7 +173,7 @@ PND_videoinit(_THIS)
     display.current_mode = current_mode;
     display.driverdata = NULL;
 
-    SDL_AddVideoDisplay(&display);
+    SDL_AddVideoDisplay(&display, SDL_FALSE);
 
     return 1;
 }

src/video/psp/SDL_pspvideo.c

@@ -167,7 +167,7 @@ PSP_VideoInit(_THIS)
     display.current_mode = current_mode;
     display.driverdata = NULL;
 
-    SDL_AddVideoDisplay(&display);
+    SDL_AddVideoDisplay(&display, SDL_FALSE);
 
     return 1;
 }

src/video/qnx/video.c

@@ -47,7 +47,7 @@ videoInit(_THIS)
 
     SDL_zero(display);
 
-    if (SDL_AddVideoDisplay(&display) < 0) {
+    if (SDL_AddVideoDisplay(&display, SDL_FALSE) < 0) {
         return -1;
     }
 

src/video/raspberry/SDL_rpivideo.c

@@ -196,7 +196,7 @@ AddDispManXDisplay(const int display_id)
 
     display.driverdata = data;
 
-    SDL_AddVideoDisplay(&display);
+    SDL_AddVideoDisplay(&display, SDL_FALSE);
 }
 
 int

src/video/uikit/SDL_uikitappdelegate.m

@@ -47,7 +47,7 @@ static int exit_status;
 /* SDL is being built as a static library, include main() */
 int main(int argc, char *argv[])
 {
-	return SDL_UIKitRunApp(argc, argv, SDL_main);
+    return SDL_UIKitRunApp(argc, argv, SDL_main);
 }
 #endif /* SDL_MAIN_NEEDED && !IOS_DYLIB */
 
@@ -56,7 +56,7 @@ int SDL_UIKitRunApp(int argc, char *argv[], SDL_main_func mainFunction)
     int i;
 
     /* store arguments */
-	forward_main = mainFunction;
+    forward_main = mainFunction;
     forward_argc = argc;
     forward_argv = (char **)malloc((argc+1) * sizeof(char *));
     for (i = 0; i < argc; i++) {
@@ -349,6 +349,14 @@ SDL_LoadLaunchImageNamed(NSString *name, int screenh)
 
 - (void)postFinishLaunch
 {
+    NSNotificationCenter *center = [NSNotificationCenter defaultCenter];
+ 
+    [center addObserver:self selector:@selector(handleScreenDidConnectNotification:)
+            name:UIScreenDidConnectNotification object:nil];
+    [center addObserver:self selector:@selector(handleScreenDidDisconnectNotification:)
+            name:UIScreenDidDisconnectNotification object:nil];
+ 
+
     /* Hide the launch screen the next time the run loop is run. SDL apps will
      * have a chance to load resources while the launch screen is still up. */
     [self performSelector:@selector(hideLaunchScreen) withObject:nil afterDelay:0.0];
@@ -520,6 +528,18 @@ SDL_LoadLaunchImageNamed(NSString *name, int screenh)
 
 #endif
 
+- (void)handleScreenDidConnectNotification:(NSNotification*)aNotification
+{
+    UIScreen *uiscreen = [aNotification object];
+    UIKit_AddDisplay(uiscreen, SDL_TRUE);
+}
+ 
+- (void)handleScreenDidDisconnectNotification:(NSNotification*)aNotification
+{
+    UIScreen *uiscreen = [aNotification object];
+    UIKit_DelDisplay(uiscreen);
+}
+
 @end
 
 #endif /* SDL_VIDEO_DRIVER_UIKIT */

src/video/uikit/SDL_uikitmodes.h

@@ -43,6 +43,8 @@
 extern SDL_bool UIKit_IsDisplayLandscape(UIScreen *uiscreen);
 
 extern int UIKit_InitModes(_THIS);
+extern int UIKit_AddDisplay(UIScreen *uiscreen, SDL_bool send_event);
+extern void UIKit_DelDisplay(UIScreen *uiscreen);
 extern void UIKit_GetDisplayModes(_THIS, SDL_VideoDisplay * display);
 extern int UIKit_GetDisplayDPI(_THIS, SDL_VideoDisplay * display, float * ddpi, float * hdpi, float * vdpi);
 extern int UIKit_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode);

src/video/uikit/SDL_uikitmodes.m

@@ -265,10 +265,11 @@ UIKit_AddDisplayMode(SDL_VideoDisplay * display, int w, int h, UIScreen * uiscre
     return 0;
 }
 
-static int
+int
-UIKit_AddDisplay(UIScreen *uiscreen)
+UIKit_AddDisplay(UIScreen *uiscreen, SDL_bool send_event)
 {
     UIScreenMode *uiscreenmode = uiscreen.currentMode;
+    CGPoint origin = uiscreen.bounds.origin;
     CGSize size = uiscreen.bounds.size;
     SDL_VideoDisplay display;
     SDL_DisplayMode mode;
@@ -302,11 +303,27 @@ UIKit_AddDisplay(UIScreen *uiscreen)
     }
 
     display.driverdata = (void *) CFBridgingRetain(data);
-    SDL_AddVideoDisplay(&display);
+    SDL_AddVideoDisplay(&display, send_event);
 
     return 0;
 }
 
+void
+UIKit_DelDisplay(UIScreen *uiscreen)
+{
+    int i;
+
+    for (i = 0; i < SDL_GetNumVideoDisplays(); ++i) {
+        SDL_DisplayData *data = (__bridge SDL_DisplayData *)SDL_GetDisplayDriverData(i);
+
+        if (data && data.uiscreen == uiscreen) {
+            CFRelease(SDL_GetDisplayDriverData(i));
+            SDL_DelVideoDisplay(i);
+            return;
+        }
+    }
+}
+
 SDL_bool
 UIKit_IsDisplayLandscape(UIScreen *uiscreen)
 {
@@ -326,7 +343,7 @@ UIKit_InitModes(_THIS)
 {
     @autoreleasepool {
         for (UIScreen *uiscreen in [UIScreen screens]) {
-            if (UIKit_AddDisplay(uiscreen) < 0) {
+            if (UIKit_AddDisplay(uiscreen, SDL_FALSE) < 0) {
                 return -1;
             }
         }

src/video/vivante/SDL_vivantevideo.c

@@ -170,7 +170,7 @@ VIVANTE_AddVideoDisplays(_THIS)
     display.desktop_mode = current_mode;
     display.current_mode = current_mode;
     display.driverdata = data;
-    SDL_AddVideoDisplay(&display);
+    SDL_AddVideoDisplay(&display, SDL_FALSE);
     return 0;
 }
 

src/video/wayland/SDL_waylandvideo.c

@@ -274,7 +274,7 @@ display_handle_done(void *data,
 {
     /* !!! FIXME: this will fail on any further property changes! */
     SDL_VideoDisplay *display = data;
-    SDL_AddVideoDisplay(display);
+    SDL_AddVideoDisplay(display, SDL_FALSE);
     wl_output_set_user_data(output, display->driverdata);
     SDL_free(display->name);
     SDL_free(display);

src/video/windows/SDL_windowsmodes.c

@@ -171,7 +171,7 @@ WIN_AddDisplay(_THIS, HMONITOR hMonitor, const MONITORINFOEX *info)
     display.desktop_mode = mode;
     display.current_mode = mode;
     display.driverdata = displaydata;
-    SDL_AddVideoDisplay(&display);
+    SDL_AddVideoDisplay(&display, SDL_FALSE);
     SDL_free(display.name);
     return SDL_TRUE;
 }

src/video/winrt/SDL_winrtvideo.cpp

@@ -293,7 +293,7 @@ WINRT_AddDisplaysForOutput (_THIS, IDXGIAdapter1 * dxgiAdapter1, int outputIndex
         }
     }
 
-    if (SDL_AddVideoDisplay(&display) < 0) {
+    if (SDL_AddVideoDisplay(&display, SDL_FALSE) < 0) {
         goto done;
     }
 
@@ -376,7 +376,7 @@ WINRT_AddDisplaysForAdapter (_THIS, IDXGIFactory2 * dxgiFactory2, int adapterInd
                 display.desktop_mode = mode;
                 display.current_mode = mode;
                 if ((SDL_AddDisplayMode(&display, &mode) < 0) ||
-                    (SDL_AddVideoDisplay(&display) < 0))
+                    (SDL_AddVideoDisplay(&display, SDL_FALSE) < 0))
                 {
                     return SDL_SetError("Failed to apply DXGI Display-detection workaround");
                 }

src/video/x11/SDL_x11modes.c

@@ -487,7 +487,7 @@ X11_InitModes_XRandR(_THIS)
                 display.desktop_mode = mode;
                 display.current_mode = mode;
                 display.driverdata = displaydata;
-                SDL_AddVideoDisplay(&display);
+                SDL_AddVideoDisplay(&display, SDL_FALSE);
             }
 
             X11_XRRFreeScreenResources(res);
@@ -807,7 +807,7 @@ X11_InitModes(_THIS)
         display.desktop_mode = mode;
         display.current_mode = mode;
         display.driverdata = displaydata;
-        SDL_AddVideoDisplay(&display);
+        SDL_AddVideoDisplay(&display, SDL_FALSE);
     }
 
 #if SDL_VIDEO_DRIVER_X11_XINERAMA