Fixed bug #1117

There's a new event that's always sent when the window changes size, and that event is what the renderers listen for to determine if they need to rebind their context.

include/SDL_video.h

@@ -140,7 +140,8 @@ typedef enum
                                          redrawn */
     SDL_WINDOWEVENT_MOVED,          /**< Window has been moved to data1, data2 
                                      */
-    SDL_WINDOWEVENT_RESIZED,        /**< Window size changed to data1xdata2 */
+    SDL_WINDOWEVENT_RESIZED,        /**< Window has been resized to data1xdata2 */
+    SDL_WINDOWEVENT_SIZE_CHANGED,   /**< The window size has changed, either as a result of an API call or through the system or user changing the window size. */
     SDL_WINDOWEVENT_MINIMIZED,      /**< Window has been minimized */
     SDL_WINDOWEVENT_MAXIMIZED,      /**< Window has been maximized */
     SDL_WINDOWEVENT_RESTORED,       /**< Window has been restored to normal size

src/events/SDL_windowevents.c

@@ -35,7 +35,8 @@ RemovePendingSizeEvents(void * userdata, SDL_Event *event)
     SDL_Event *new_event = (SDL_Event *)userdata;
 
     if (event->type == SDL_WINDOWEVENT &&
-        event->window.event == SDL_WINDOWEVENT_RESIZED &&
+        (event->window.event == SDL_WINDOWEVENT_RESIZED ||
+         event->window.event == SDL_WINDOWEVENT_SIZE_CHANGED) &&
         event->window.windowID == new_event->window.windowID) {
         /* We're about to post a new size event, drop the old one */
         return 0;

src/render/opengl/SDL_render_gl.c

@@ -348,7 +348,7 @@ GL_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event)
 {
     GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
 
-    if (event->event == SDL_WINDOWEVENT_RESIZED) {
+    if (event->event == SDL_WINDOWEVENT_SIZE_CHANGED) {
         /* Rebind the context to the window area and update matrices */
         SDL_CurrentContext = NULL;
         data->updateSize = SDL_TRUE;

src/render/opengles/SDL_render_gles.c

@@ -261,7 +261,7 @@ GLES_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event)
 {
     GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
 
-    if (event->event == SDL_WINDOWEVENT_RESIZED) {
+    if (event->event == SDL_WINDOWEVENT_SIZE_CHANGED) {
         /* Rebind the context to the window area and update matrices */
         SDL_CurrentContext = NULL;
         data->updateSize = SDL_TRUE;

src/render/opengles2/SDL_render_gles2.c

@@ -170,7 +170,7 @@ GLES2_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event)
 {
     GLES2_DriverContext *rdata = (GLES2_DriverContext *)renderer->driverdata;
 
-    if (event->event == SDL_WINDOWEVENT_RESIZED) {
+    if (event->event == SDL_WINDOWEVENT_SIZE_CHANGED) {
         /* Rebind the context to the window area */
         SDL_CurrentContext = NULL;
         rdata->updateSize = SDL_TRUE;

src/render/software/SDL_render_sw.c

@@ -173,7 +173,7 @@ SW_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event)
 {
     SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
 
-    if (event->event == SDL_WINDOWEVENT_RESIZED) {
+    if (event->event == SDL_WINDOWEVENT_SIZE_CHANGED) {
         data->updateSize = SDL_TRUE;
     }
 }

src/video/SDL_video.c

@@ -1431,10 +1431,15 @@ SDL_SetWindowSize(SDL_Window * window, int w, int h)
 
     /* FIXME: Should this change fullscreen modes? */
     if (!(window->flags & SDL_WINDOW_FULLSCREEN)) {
+        window->w = w;
+        window->h = h;
         if (_this->SetWindowSize) {
             _this->SetWindowSize(_this, window);
         }
-        SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, w, h);
+        if (window->w == w && window->h == h) {
+            /* We didn't get a SDL_WINDOWEVENT_RESIZED event (by design) */
+            SDL_OnWindowResized(window);
+        }
     }
 }
 
@@ -1706,6 +1711,7 @@ void
 SDL_OnWindowResized(SDL_Window * window)
 {
     window->surface_valid = SDL_FALSE;
+    SDL_SendWindowEvent(window, SDL_WINDOWEVENT_SIZE_CHANGED, window->w, window->h);
 }
 
 void

src/video/directfb/SDL_DirectFB_render.c

@@ -279,7 +279,7 @@ DirectFB_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event)
 {
     SDL_DFB_RENDERERDATA(renderer);
 
-    if (event->event == SDL_WINDOWEVENT_RESIZED) {
+    if (event->event == SDL_WINDOWEVENT_SIZE_CHANGED) {
         /* Rebind the context to the window area and update matrices */
         //SDL_CurrentContext = NULL;
         //data->updateSize = SDL_TRUE;