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authorPietro Gagliardi <[email protected]>2014-03-29 19:02:09 -0400
committerPietro Gagliardi <[email protected]>2014-03-29 19:02:09 -0400
commitefdd60375ab3048919bde2d5f410b92626a6a712 (patch)
tree0ea30f1113217bcf6111dc0ce015f2d43388b86a /area_unix.go
parent652797bd3e3c374620f75aa2bea2ee3534396ab8 (diff)
Documented that the clip area in AreaHandler.Paint() more properly and indicate that it is cleared on each AreaHandler.Paint() call; (try to) implement that on Windows (GTK+ does it for us; noted that as well).
Diffstat (limited to 'area_unix.go')
-rw-r--r--area_unix.go1
1 files changed, 1 insertions, 0 deletions
diff --git a/area_unix.go b/area_unix.go
index 08dd48d..0155bdc 100644
--- a/area_unix.go
+++ b/area_unix.go
@@ -48,6 +48,7 @@ func our_area_draw_callback(widget *C.GtkWidget, cr *C.cairo_t, data C.gpointer)
s := (*sysData)(unsafe.Pointer(data))
// thanks to desrt in irc.gimp.net/#gtk+
C.cairo_clip_extents(cr, &x, &y, &w, &h)
+ // we do not need to clear the cliprect; GtkDrawingArea did it for us beforehand
cliprect := image.Rect(int(x), int(y), int(w), int(h))
// the cliprect can actually fall outside the size of the Area; clip it by intersecting the two rectangles
C.gtk_widget_get_size_request(widget, &maxwid, &maxht)