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-rw-r--r--fastiv-view.c19
1 files changed, 18 insertions, 1 deletions
diff --git a/fastiv-view.c b/fastiv-view.c
index a692285..d06dc57 100644
--- a/fastiv-view.c
+++ b/fastiv-view.c
@@ -88,8 +88,25 @@ fastiv_view_draw(GtkWidget *widget, cairo_t *cr)
if (!self->surface)
return TRUE;
+ // TODO(p): Make this adjustable later.
+ cairo_set_source_rgb(cr, 0, 0, 0);
+ cairo_paint(cr);
+
+ GtkAllocation allocation;
+ gtk_widget_get_allocation(widget, &allocation);
+
+ int w = cairo_image_surface_get_width(self->surface);
+ int h = cairo_image_surface_get_height(self->surface);
+
+ double x = 0;
+ double y = 0;
+ if (w < allocation.width)
+ x = (allocation.width - w) / 2;
+ if (h < allocation.height)
+ y = (allocation.height - h) / 2;
+
// TODO(p): Times the zoom.
- cairo_set_source_surface(cr, self->surface, 0, 0);
+ cairo_set_source_surface(cr, self->surface, x, y);
cairo_paint(cr);
return TRUE;
}