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tests: Handle invalidations properly in rotating drawingarea

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This commit is contained in:
Benjamin Otte 2011-02-09 23:56:12 +01:00
parent b32c135abb
commit f9257fba91
1 changed files with 39 additions and 18 deletions
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57
tests/testpicture.c
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@ -247,16 +247,51 @@ draw_callback (GtkWidget *area,
return FALSE;
}
#define ROTATE_FPS 40
#define ROTATE_SECONDS 3
#define ROTATE_FPS 30
#define ROTATE_SECONDS 6
static void
area_invalidate_picture (GtkWidget *area, guint i, const cairo_region_t *region)
{
cairo_region_t *copy;
double x, y;
int dx, dy;
get_picture_offset (area, i, &x, &y);
if (region)
copy = cairo_region_copy (region);
else
{
cairo_rectangle_int_t rect = { 0, 0,
gdk_picture_get_width (demos[i].attached_picture),
gdk_picture_get_height (demos[i].attached_picture) };
copy = cairo_region_create_rectangle (&rect);
}
cairo_region_translate (copy, floor (x), floor (y));
gtk_widget_queue_draw_region (area, copy);
dx = (floor (x) != ceil (x)) ? 1 : 0;
dy = (floor (y) != ceil (y)) ? 1 : 0;
if (dx || dy)
{
cairo_region_translate (copy, dx, dy);
gtk_widget_queue_draw_region (area, copy);
}
cairo_region_destroy (copy);
}
static gboolean
rotate_area (gpointer area)
{
guint i;
for (i = 0; i < G_N_ELEMENTS (demos); i++)
area_invalidate_picture (area, i, NULL);
rotation += 360 / ROTATE_SECONDS / ROTATE_FPS;
rotation %= 360;
gtk_widget_queue_draw (area);
for (i = 0; i < G_N_ELEMENTS (demos); i++)
area_invalidate_picture (area, i, NULL);
return TRUE;
}
@ -280,9 +315,6 @@ rotation_toggled (GtkButton *button, GtkWidget *area)
static void
picture_changed (GdkPicture *picture, const cairo_region_t *region, GtkWidget *area)
{
cairo_region_t *copy;
double x, y;
int dx, dy;
guint i;
for (i = 0; i < G_N_ELEMENTS (demos); i++)
@ -292,18 +324,7 @@ picture_changed (GdkPicture *picture, const cairo_region_t *region, GtkWidget *a
}
g_assert (i < G_N_ELEMENTS (demos));
get_picture_offset (area, i, &x, &y);
copy = cairo_region_copy (region);
cairo_region_translate (copy, floor (x), floor (y));
gtk_widget_queue_draw_region (area, copy);
dx = (floor (x) != ceil (x)) ? 1 : 0;
dy = (floor (y) != ceil (y)) ? 1 : 0;
if (dx || dy)
{
cairo_region_translate (copy, dx, dy);
gtk_widget_queue_draw_region (area, copy);
}
cairo_region_destroy (copy);
area_invalidate_picture (area, i, region);
}
static void