GTK: thread-safe refresh. doesn't freeze randomly anymore.

src/libui_sdl/libui/unix/area.c

@@ -1,6 +1,8 @@
 // 4 september 2015
 #include "uipriv_unix.h"
 
+extern GThread* gtkthread;
+
 // notes:
 // - G_DECLARE_DERIVABLE/FINAL_INTERFACE() requires glib 2.44 and that's starting with debian stretch (testing) (GTK+ 3.18) and ubuntu 15.04 (GTK+ 3.14) - debian jessie has 2.42 (GTK+ 3.14)
 #define areaWidgetType (areaWidget_get_type())
@@ -387,7 +389,7 @@ static int areaKeyEvent(uiArea *a, int up, GdkEventKey *e)
 	ke.Key = 0;
 	ke.ExtKey = 0;
 	ke.Modifier = 0;
-
+printf("keypress: %08X\n", e->hardware_keycode-8);
 	state = translateModifiers(e->state, e->window);
 	ke.Modifiers = toModifiers(state);
 
@@ -501,9 +503,20 @@ void uiAreaSetSize(uiArea *a, int width, int height)
 	gtk_widget_queue_resize(a->areaWidget);
 }
 
+gboolean _threadsaferefresh(gpointer data)
+{
+    uiArea* a = (uiArea*)data;
+    gtk_widget_queue_draw(a->areaWidget);
+    return FALSE;
+}
+
 void uiAreaQueueRedrawAll(uiArea *a)
 {
-	gtk_widget_queue_draw(a->areaWidget);
+    // TODO: figure out how we could generalize the "thread-safe function call" mechanism
+    if (g_thread_self() != gtkthread)
+        g_idle_add(_threadsaferefresh, a);
+    else
+	    gtk_widget_queue_draw(a->areaWidget);
 }
 
 void uiAreaScrollTo(uiArea *a, double x, double y, double width, double height)

src/libui_sdl/libui/unix/main.c

@@ -3,6 +3,9 @@
 
 uiInitOptions options;
 
+// kind of a hack
+GThread* gtkthread;
+
 const char *uiInit(uiInitOptions *o)
 {
 	GError *err = NULL;
@@ -16,6 +19,9 @@ const char *uiInit(uiInitOptions *o)
 	}
 	initAlloc();
 	loadFutures();
+	
+	gtkthread = g_thread_self();
+	
 	return NULL;
 }
 

src/libui_sdl/libui/unix/window.c

@@ -265,7 +265,7 @@ uiWindow *uiNewWindow(const char *title, int width, int height, int hasMenubar)
 
 	// show everything in the vbox, but not the GtkWindow itself
 	gtk_widget_show_all(w->vboxWidget);
-printf("wbox %p\n", w->childHolderWidget);
+
 	// and connect our events
 	g_signal_connect(w->widget, "delete-event", G_CALLBACK(onClosing), w);
 	g_signal_connect(w->childHolderWidget, "size-allocate", G_CALLBACK(onSizeAllocate), w);

src/libui_sdl/main.cpp

@@ -133,7 +133,7 @@ int EmuThreadFunc(void* burp)
 
                 char melontitle[100];
                 sprintf(melontitle, "%d/%.0f FPS | melonDS " MELONDS_VERSION, fps, fpstarget);
-                uiWindowSetTitle(MainWindow, melontitle);
+                //uiWindowSetTitle(MainWindow, melontitle);
             }
         }
         else
@@ -321,7 +321,7 @@ int main(int argc, char** argv)
     EmuThread = SDL_CreateThread(EmuThreadFunc, "melonDS magic", NULL);
 
     uiControlShow(uiControl(MainWindow));
-    uiControlSetFocus(uiControl(MainDrawArea)); // TODO: this needs to be done when the window regains focus
+    //uiControlSetFocus(uiControl(MainDrawArea)); // TODO: this needs to be done when the window regains focus
     uiMain();
 
     EmuRunning = 0;