This seems to resolve some painting issues - there is some manual
rendering code here that is no longer advised in GTK 3. Related issues
remain which I will look into, but I think this is an improvement.
---
gtkboard.c | 28 +++++++++-------------------
1 file changed, 9 insertions(+), 19 deletions(-)
diff --git a/gtkboard.c b/gtkboard.c
index 04e53ed5..1bb34f72 100644
--- a/gtkboard.c
+++ b/gtkboard.c
@@ -1052,18 +1052,21 @@ board_drag(GtkWidget * UNUSED(widget), BoardData * bd,
int x, int y)
static void
board_end_drag(GtkWidget * UNUSED(widget), BoardData * bd)
{
+#if GTK_CHECK_VERSION(3,0,0)
+ if (!bd || !bd->drawing_area)
+ return;
+
+ if (bd->rd->nSize == 0)
+ return;
+
+ gtk_widget_queue_draw(bd->drawing_area);
+#else
cairo_t *cr;
unsigned char *puch;
int s = bd->rd->nSize;
GdkWindow *window = gtk_widget_get_window(bd->drawing_area);
-#if GTK_CHECK_VERSION(3,22,0)
- cairo_region_t * cairoRegion = cairo_region_create();
- GdkDrawingContext *context;
-#endif
-#if !GTK_CHECK_VERSION(3,22,0)
gdk_window_process_updates(window, FALSE);
-#endif
if (s == 0)
return;
@@ -1072,23 +1075,10 @@ board_end_drag(GtkWidget * UNUSED(widget), BoardData *
bd)
RenderArea(bd, puch, bd->x_drag - 3 * s, bd->y_drag - 3 * s, 6 * s, 6 * s);
-#if GTK_CHECK_VERSION(3,22,0)
- context = gdk_window_begin_draw_frame(window, cairoRegion);
- cr = gdk_drawing_context_get_cairo_context(context);
-#else
cr = gdk_cairo_create(window);
-#endif
-
draw_rgb_image(cr, puch, bd->x_drag - 3 * s, bd->y_drag - 3 * s, 6 * s, 6
* s);
-
-#if GTK_CHECK_VERSION(3,22,0)
- gdk_window_end_draw_frame(window, context);
- cairo_region_destroy(cairoRegion);
-#else
cairo_destroy(cr);
-#endif
-#if !GTK_CHECK_VERSION(3,0,0)
gtk_widget_queue_draw(bd->drawing_area);
gdk_window_process_updates(window, FALSE);
#endif
--
2.54.0
