dwindows: gtk4/dw.c comparison

comparison gtk4/dw.c @ 2321:52ca7647f665

GTK4: Implement pointer grabbing using Xlib and center message boxes.

author	bsmith@81767d24-ef19-dc11-ae90-00e081727c95
date	Wed, 17 Feb 2021 03:52:41 +0000
parents	829228de003f
children	ebcaedfa7ff4

comparison

equal deleted inserted replaced

-:829228de003f
+:52ca7647f665
 * ...
 */
 #ifndef _DW_SINGLE_THREADED
 #define DW_FUNCTION_DEFINITION(func, rettype, ...)  gboolean _##func(void **_args); \
 rettype API func(__VA_ARGS__) {
+#define DW_FUNCTION_ADD_PARAM void **_args = alloca(sizeof(void *)*2); \
+_args[0] = (void *)pthread_getspecific(_dw_event_key); \
+_args[1] = (void *)NULL;
 #define DW_FUNCTION_ADD_PARAM1(param1) void **_args = alloca(sizeof(void *)*3); \
 _args[0] = (void *)pthread_getspecific(_dw_event_key); \
 _args[1] = (void *)NULL; \
 _args[2] = (void *)&param1;
 #define DW_FUNCTION_ADD_PARAM2(param1, param2) void **_args = alloca(sizeof(void *)*4); \
 GtkWidget *dialog;
 int response;
 va_list args;
 char outbuf[1025] = {0};
 DWDialog *tmp = dw_dialog_new(NULL);
+ULONG width, height;
 va_start(args, format);
 vsnprintf(outbuf, 1024, format, args);
 va_end(args);
 gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dialog), "%s", outbuf);
 if(flags & DW_MB_YESNOCANCEL)
 gtk_dialog_add_button(GTK_DIALOG(dialog), "Cancel", GTK_RESPONSE_CANCEL);
 gtk_widget_show(GTK_WIDGET(dialog));
 g_signal_connect(G_OBJECT(dialog), "response", G_CALLBACK(_dw_dialog_response), (gpointer)tmp);
+/* Center the dialog on the screen since there is no parent */
+dw_window_get_pos_size((HWND)dialog, NULL, NULL, &width, &height);
+dw_window_set_pos((HWND)dialog, (dw_screen_width() - width)/2, (dw_screen_height() - height)/2);
 response = DW_POINTER_TO_INT(dw_dialog_wait(tmp));
 if(GTK_IS_WINDOW(dialog))
 gtk_window_destroy(GTK_WINDOW(dialog));
 switch(response)
 {
 /* TODO */
 return 0;
 }
 /*
-* Captures the mouse input to this window.
-* Parameters:
-*       handle: Handle to receive mouse input.
-*/
-void dw_window_capture(HWND handle)
-{
-/* TODO: See if this is possible in GTK4 */
-}
-/*
 * Changes the appearance of the mouse pointer.
 * Parameters:
 *       handle: Handle to widget for which to change.
 *       cursortype: ID of the pointer you want.
 */
 gtk_widget_set_cursor(GTK_WIDGET(handle), NULL);
 DW_FUNCTION_RETURN_NOTHING;
 }
 /*
+* Captures the mouse input to this window.
+* Parameters:
+*       handle: Handle to receive mouse input.
+*/
+#ifndef GDK_WINDOWING_X11
+void dw_window_capture(HWND handle)
+{
+}
+#else
+static Display *_DWXGrabbedDisplay = NULL;
+DW_FUNCTION_DEFINITION(dw_window_capture, void, HWND handle)
+DW_FUNCTION_ADD_PARAM1(handle)
+DW_FUNCTION_NO_RETURN(dw_window_capture)
+DW_FUNCTION_RESTORE_PARAM1(handle, HWND)
+{
+if(_DWXGrabbedDisplay == NULL && handle && GTK_IS_WINDOW(handle))
+{
+GdkSurface *surface = gtk_native_get_surface(GTK_NATIVE(handle));
+if(surface)
+{
+if(XGrabPointer(GDK_SURFACE_XDISPLAY(surface), GDK_SURFACE_XID(surface), FALSE,
+ButtonPressMask | ButtonReleaseMask | PointerMotionMask | EnterWindowMask | LeaveWindowMask,
+GrabModeAsync,  GrabModeAsync, None, None, CurrentTime) == GrabSuccess)
+_DWXGrabbedDisplay = GDK_SURFACE_XDISPLAY(surface);
+}
+}
+DW_FUNCTION_RETURN_NOTHING;
+}
+#endif
+/*
 * Releases previous mouse capture.
 */
+#ifndef GDK_WINDOWING_X11
 void dw_window_release(void)
 {
-/* TODO: See if this is possible in GTK4 */
+}
-}
+#else
+DW_FUNCTION_DEFINITION(dw_window_release, void)
+DW_FUNCTION_ADD_PARAM
+DW_FUNCTION_NO_RETURN(dw_window_release)
+{
+if(_DWXGrabbedDisplay)
+{
+XUngrabPointer(_DWXGrabbedDisplay, CurrentTime);
+_DWXGrabbedDisplay = NULL;
+}
+DW_FUNCTION_RETURN_NOTHING;
+}
+#endif
 /* Window creation flags that will cause the window to have decorations */
 #define _DW_DECORATION_FLAGS (DW_FCF_CLOSEBUTTON|DW_FCF_SYSMENU|DW_FCF_TITLEBAR|DW_FCF_MINMAX|DW_FCF_SIZEBORDER|DW_FCF_BORDER|DW_FCF_DLGBORDER)
 /*
 /* Try with various extentions */
 while(_dw_image_exts[i] && !pixmap->pixbuf)
 {
 strcpy(file, filename);
 strcat(file, _dw_image_exts[i]);
-if(access(file, 04 ) == 0)
+if(access(file, 04) == 0)
 pixmap->pixbuf = gdk_pixbuf_new_from_file(file, NULL);
 i++;
 }
 }
 else
 DW_FUNCTION_NO_RETURN(dw_window_get_pos_size)
 DW_FUNCTION_RESTORE_PARAM5(handle, HWND, x, long *, y, long *, width, ULONG *, height, ULONG *)
 {
 if(handle && GTK_IS_WIDGET(handle))
 {
+GtkRequisition size;
+/* If the widget hasn't been shown, it returns 0 so use this as backup */
+gtk_widget_get_preferred_size(GTK_WIDGET(handle), NULL, &size);
 if(width)
+{
 *width = (ULONG)gtk_widget_get_width(GTK_WIDGET(handle));
+if(!*width)
+*width = (ULONG)size.width;
+}
 if(height)
+{
 *height = (ULONG)gtk_widget_get_height(GTK_WIDGET(handle));
+if(!*height)
+*height = (ULONG)size.height;
+}
 #ifdef GDK_WINDOWING_X11
 {
 GdkSurface *surface = gtk_native_get_surface(GTK_NATIVE(handle));

Mercurial > dwindows

comparison gtk4/dw.c @ 2321:52ca7647f665