Ejemplo n.º 1
0
/**
 * cairo_region_xor_rectangle:
 * @dst: a #cairo_region_t
 * @rectangle: a #cairo_rectangle_int_t
 *
 * Computes the exclusive difference of @dst with @rectangle and places the
 * result in @dst. That is, @dst will be set to contain all areas that are 
 * either in @dst or in @rectangle, but not in both.
 *
 * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
 *
 * Since: 1.10
 **/
cairo_status_t
cairo_region_xor_rectangle (cairo_region_t *dst,
			    const cairo_rectangle_int_t *rectangle)
{
    cairo_status_t status = CAIRO_STATUS_SUCCESS;
    pixman_region32_t region, tmp;

    if (dst->status)
	return dst->status;

    pixman_region32_init_rect (&region,
			       rectangle->x, rectangle->y,
			       rectangle->width, rectangle->height);
    pixman_region32_init (&tmp);

    /* XXX: get an xor function into pixman */
    if (! pixman_region32_subtract (&tmp, &region, &dst->rgn) ||
        ! pixman_region32_subtract (&dst->rgn, &dst->rgn, &region) || 
        ! pixman_region32_union (&dst->rgn, &dst->rgn, &tmp))
	status = _cairo_region_set_error (dst, CAIRO_STATUS_NO_MEMORY);

    pixman_region32_fini (&tmp);
    pixman_region32_fini (&region);

    return status;
}
Ejemplo n.º 2
0
static void
draw_view(struct weston_view *ev, struct weston_output *output,
	  pixman_region32_t *damage) /* in global coordinates */
{
	struct pixman_surface_state *ps = get_surface_state(ev->surface);
	/* repaint bounding region in global coordinates: */
	pixman_region32_t repaint;
	/* non-opaque region in surface coordinates: */
	pixman_region32_t surface_blend;

	/* No buffer attached */
	if (!ps->image)
		return;

	pixman_region32_init(&repaint);
	pixman_region32_intersect(&repaint,
				  &ev->transform.boundingbox, damage);
	pixman_region32_subtract(&repaint, &repaint, &ev->clip);

	if (!pixman_region32_not_empty(&repaint))
		goto out;

	if (output->zoom.active) {
		weston_log("pixman renderer does not support zoom\n");
		goto out;
	}

	/* TODO: Implement repaint_region_complex() using pixman_composite_trapezoids() */
	if (ev->transform.enabled &&
	    ev->transform.matrix.type != WESTON_MATRIX_TRANSFORM_TRANSLATE) {
		repaint_region(ev, output, &repaint, NULL, PIXMAN_OP_OVER);
	} else {
		/* blended region is whole surface minus opaque region: */
		pixman_region32_init_rect(&surface_blend, 0, 0,
					  ev->surface->width, ev->surface->height);
		pixman_region32_subtract(&surface_blend, &surface_blend, &ev->surface->opaque);

		if (pixman_region32_not_empty(&ev->surface->opaque)) {
			repaint_region(ev, output, &repaint, &ev->surface->opaque, PIXMAN_OP_SRC);
		}

		if (pixman_region32_not_empty(&surface_blend)) {
			repaint_region(ev, output, &repaint, &surface_blend, PIXMAN_OP_OVER);
		}
		pixman_region32_fini(&surface_blend);
	}


out:
	pixman_region32_fini(&repaint);
}
Ejemplo n.º 3
0
cairo_int_status_t
_cairo_region_subtract (cairo_region_t *dst, cairo_region_t *a, cairo_region_t *b)
{
    if (!pixman_region32_subtract (&dst->rgn, &a->rgn, &b->rgn))
	return _cairo_error (CAIRO_STATUS_NO_MEMORY);

    return CAIRO_STATUS_SUCCESS;
}
Ejemplo n.º 4
0
static void
subtract(struct wl_client *client, struct wl_resource *resource, int32_t x, int32_t y, int32_t width, int32_t height)
{
	struct region *region = wl_resource_get_user_data(resource);
	pixman_region32_t operand;

	pixman_region32_init_rect(&operand, x, y, width, height);
	pixman_region32_subtract(&region->region, &region->region, &operand);
}
Ejemplo n.º 5
0
/**
 * cairo_region_subtract:
 * @dst: a #cairo_region_t
 * @other: another #cairo_region_t
 *
 * Subtracts @other from @dst and places the result in @dst
 *
 * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
 *
 * Since: 1.10
 **/
cairo_status_t
cairo_region_subtract (cairo_region_t *dst, cairo_region_t *other)
{
    if (dst->status)
	return dst->status;

    if (other->status)
	return _cairo_region_set_error (dst, other->status);

    if (! pixman_region32_subtract (&dst->rgn, &dst->rgn, &other->rgn))
	return _cairo_region_set_error (dst, CAIRO_STATUS_NO_MEMORY);

    return CAIRO_STATUS_SUCCESS;
}
Ejemplo n.º 6
0
static void
draw_view(struct weston_view *ev, struct weston_output *output,
	  pixman_region32_t *damage) /* in global coordinates */
{
	static int zoom_logged = 0;
	struct pixman_surface_state *ps = get_surface_state(ev->surface);
	/* repaint bounding region in global coordinates: */
	pixman_region32_t repaint;

	/* No buffer attached */
	if (!ps->image)
		return;

	pixman_region32_init(&repaint);
	pixman_region32_intersect(&repaint,
				  &ev->transform.boundingbox, damage);
	pixman_region32_subtract(&repaint, &repaint, &ev->clip);

	if (!pixman_region32_not_empty(&repaint))
		goto out;

	if (output->zoom.active && !zoom_logged) {
		weston_log("pixman renderer does not support zoom\n");
		zoom_logged = 1;
	}

	if (view_transformation_is_translation(ev)) {
		/* The simple case: The surface regions opaque, non-opaque,
		 * etc. are convertible to global coordinate space.
		 * There is no need to use a source clip region.
		 * It is possible to paint opaque region as PIXMAN_OP_SRC.
		 * Also the boundingbox is accurate rather than an
		 * approximation.
		 */
		draw_view_translated(ev, output, &repaint);
	} else {
		/* The complex case: the view transformation does not allow
		 * converting opaque etc. regions into global coordinate space.
		 * Therefore we need source clipping to avoid sampling from
		 * unwanted source image areas, unless the source image is
		 * to be used whole. Source clipping does not work with
		 * PIXMAN_OP_SRC.
		 */
		draw_view_source_clipped(ev, output, &repaint);
	}

out:
	pixman_region32_fini(&repaint);
}
Ejemplo n.º 7
0
/**
 * cairo_region_xor:
 * @dst: a #cairo_region_t
 * @other: another #cairo_region_t
 *
 * Computes the exclusive difference of @dst with @other and places the
 * result in @dst. That is, @dst will be set to contain all areas that
 * are either in @dst or in @other, but not in both.
 *
 * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
 *
 * Since: 1.10
 **/
cairo_status_t
cairo_region_xor (cairo_region_t *dst, const cairo_region_t *other)
{
    cairo_status_t status = CAIRO_STATUS_SUCCESS;
    pixman_region32_t tmp;

    if (dst->status)
	return dst->status;

    if (other->status)
	return _cairo_region_set_error (dst, other->status);

    pixman_region32_init (&tmp);

    /* XXX: get an xor function into pixman */
    if (! pixman_region32_subtract (&tmp, CONST_CAST &other->rgn, &dst->rgn) ||
        ! pixman_region32_subtract (&dst->rgn, &dst->rgn, CONST_CAST &other->rgn) || 
        ! pixman_region32_union (&dst->rgn, &dst->rgn, &tmp))
	status = _cairo_region_set_error (dst, CAIRO_STATUS_NO_MEMORY);

    pixman_region32_fini (&tmp);

    return status;
}
Ejemplo n.º 8
0
static int
headless_output_repaint(struct weston_output *output_base,
		       pixman_region32_t *damage)
{
	struct headless_output *output = (struct headless_output *) output_base;
	struct weston_compositor *ec = output->base.compositor;

	ec->renderer->repaint_output(&output->base, damage);

	pixman_region32_subtract(&ec->primary_plane.damage,
				 &ec->primary_plane.damage, damage);

	wl_event_source_timer_update(output->finish_frame_timer, 16);

	return 0;
}
Ejemplo n.º 9
0
static void
draw_view_translated(struct weston_view *view, struct weston_output *output,
		     pixman_region32_t *repaint_global)
{
	struct weston_surface *surface = view->surface;
	/* non-opaque region in surface coordinates: */
	pixman_region32_t surface_blend;
	/* region to be painted in output coordinates: */
	pixman_region32_t repaint_output;

	pixman_region32_init(&repaint_output);

	/* Blended region is whole surface minus opaque region,
	 * unless surface alpha forces us to blend all.
	 */
	pixman_region32_init_rect(&surface_blend, 0, 0,
				  surface->width, surface->height);

	if (!(view->alpha < 1.0)) {
		pixman_region32_subtract(&surface_blend, &surface_blend,
					 &surface->opaque);

		if (pixman_region32_not_empty(&surface->opaque)) {
			region_intersect_only_translation(&repaint_output,
							  repaint_global,
							  &surface->opaque,
							  view);
			region_global_to_output(output, &repaint_output);

			repaint_region(view, output, &repaint_output, NULL,
				       PIXMAN_OP_SRC);
		}
	}

	if (pixman_region32_not_empty(&surface_blend)) {
		region_intersect_only_translation(&repaint_output,
						  repaint_global,
						  &surface_blend, view);
		region_global_to_output(output, &repaint_output);

		repaint_region(view, output, &repaint_output, NULL,
			       PIXMAN_OP_OVER);
	}

	pixman_region32_fini(&surface_blend);
	pixman_region32_fini(&repaint_output);
}
Ejemplo n.º 10
0
static void
wayland_output_repaint(struct weston_output *output_base,
		       pixman_region32_t *damage)
{
	struct wayland_output *output = (struct wayland_output *) output_base;
	struct weston_compositor *ec = output->base.compositor;
	struct wl_callback *callback;

	callback = wl_surface_frame(output->parent.surface);
	wl_callback_add_listener(callback, &frame_listener, output);

	ec->renderer->repaint_output(&output->base, damage);

	pixman_region32_subtract(&ec->primary_plane.damage,
				 &ec->primary_plane.damage, damage);

}
Ejemplo n.º 11
0
/**
 * cairo_region_subtract_rectangle:
 * @dst: a #cairo_region_t
 * @rectangle: a #cairo_rectangle_int_t
 *
 * Subtracts @rectangle from @dst and places the result in @dst
 *
 * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY
 *
 * Since: 1.10
 **/
cairo_status_t
cairo_region_subtract_rectangle (cairo_region_t *dst,
				 const cairo_rectangle_int_t *rectangle)
{
    cairo_status_t status = CAIRO_STATUS_SUCCESS;
    pixman_region32_t region;

    if (dst->status)
	return dst->status;

    pixman_region32_init_rect (&region,
			       rectangle->x, rectangle->y,
			       rectangle->width, rectangle->height);

    if (! pixman_region32_subtract (&dst->rgn, &dst->rgn, &region))
	status = _cairo_region_set_error (dst, CAIRO_STATUS_NO_MEMORY);

    pixman_region32_fini (&region);

    return status;
}
Ejemplo n.º 12
0
int
main ()
{
    pixman_region32_t r1;
    pixman_region32_t r2;
    pixman_region32_t r3;
    pixman_box32_t boxes[] = {
	{ 10, 10, 20, 20 },
	{ 30, 30, 30, 40 },
	{ 50, 45, 60, 44 },
    };
    pixman_box32_t boxes2[] = {
	{ 2, 6, 7, 6 },
	{ 4, 1, 6, 7 },
    };
    pixman_box32_t boxes3[] = {
	{ 2, 6, 7, 6 },
	{ 4, 1, 6, 1 },
    };
    int i, j;
    pixman_box32_t *b;
    pixman_image_t *image, *fill;
    pixman_color_t white = {
	0xffff,
	0xffff,
	0xffff,
	0xffff
    };

    /* This used to go into an infinite loop before pixman-region.c
     * was fixed to not use explict "short" variables
     */
    pixman_region32_init_rect (&r1, 0, 0, 20, 64000);
    pixman_region32_init_rect (&r2, 0, 0, 20, 64000);
    pixman_region32_init_rect (&r3, 0, 0, 20, 64000);

    pixman_region32_subtract (&r1, &r2, &r3);


    /* This would produce a region containing an empty
     * rectangle in it. Such regions are considered malformed,
     * but using an empty rectangle for initialization should
     * work.
     */
    pixman_region32_init_rects (&r1, boxes, 3);

    b = pixman_region32_rectangles (&r1, &i);

    assert (i == 1);
    
    while (i--)
    {
	assert (b[i].x1 < b[i].x2);
	assert (b[i].y1 < b[i].y2);
    }

    /* This would produce a rectangle containing the bounding box
     * of the two rectangles. The correct result is to eliminate
     * the broken rectangle.
     */
    pixman_region32_init_rects (&r1, boxes2, 2);

    b = pixman_region32_rectangles (&r1, &i);

    assert (i == 1);

    assert (b[0].x1 == 4);
    assert (b[0].y1 == 1);
    assert (b[0].x2 == 6);
    assert (b[0].y2 == 7);

    /* This should produce an empty region */
    pixman_region32_init_rects (&r1, boxes3, 2);

    b = pixman_region32_rectangles (&r1, &i);

    assert (i == 0);

    fill = pixman_image_create_solid_fill (&white);
    for (i = 0; i < 100; i++)
    {
	int image_size = 128;

	pixman_region32_init (&r1);

	/* Add some random rectangles */
	for (j = 0; j < 64; j++)
	    pixman_region32_union_rect (&r1, &r1,
					lcg_rand_n (image_size),
					lcg_rand_n (image_size),
					lcg_rand_n (25),
					lcg_rand_n (25));

	/* Clip to image size */
	pixman_region32_init_rect (&r2, 0, 0, image_size, image_size);
	pixman_region32_intersect (&r1, &r1, &r2);
	pixman_region32_fini (&r2);

	/* render region to a1 mask */
	image = pixman_image_create_bits (PIXMAN_a1, image_size, image_size, NULL, 0);
	pixman_image_set_clip_region32 (image, &r1);
	pixman_image_composite32 (PIXMAN_OP_SRC,
				  fill, NULL, image,
				  0, 0, 0, 0, 0, 0,
				  image_size, image_size);
	pixman_region32_init_from_image (&r2, image);

	pixman_image_unref (image);

	assert (pixman_region32_equal (&r1, &r2));
	pixman_region32_fini (&r1);
	pixman_region32_fini (&r2);

    }
    pixman_image_unref (fill);

    return 0;
}
Ejemplo n.º 13
0
int
main ()
{
    pixman_region32_t r1;
    pixman_region32_t r2;
    pixman_region32_t r3;
    pixman_box32_t boxes[] = {
	{ 10, 10, 20, 20 },
	{ 30, 30, 30, 40 },
	{ 50, 45, 60, 44 },
    };
    pixman_box32_t boxes2[] = {
	{ 2, 6, 7, 6 },
	{ 4, 1, 6, 7 },
    };
    pixman_box32_t boxes3[] = {
	{ 2, 6, 7, 6 },
	{ 4, 1, 6, 1 },
    };
    int i;
    pixman_box32_t *b;

    /* This used to go into an infinite loop before pixman-region.c
     * was fixed to not use explict "short" variables
     */
    pixman_region32_init_rect (&r1, 0, 0, 20, 64000);
    pixman_region32_init_rect (&r2, 0, 0, 20, 64000);
    pixman_region32_init_rect (&r3, 0, 0, 20, 64000);

    pixman_region32_subtract (&r1, &r2, &r3);


    /* This would produce a region containing an empty
     * rectangle in it. Such regions are considered malformed,
     * but using an empty rectangle for initialization should
     * work.
     */
    pixman_region32_init_rects (&r1, boxes, 3);

    b = pixman_region32_rectangles (&r1, &i);

    assert (i == 1);
    
    while (i--)
    {
	assert (b[i].x1 < b[i].x2);
	assert (b[i].y1 < b[i].y2);
    }

    /* This would produce a rectangle containing the bounding box
     * of the two rectangles. The correct result is to eliminate
     * the broken rectangle.
     */
    pixman_region32_init_rects (&r1, boxes2, 2);

    b = pixman_region32_rectangles (&r1, &i);

    assert (i == 1);

    assert (b[0].x1 == 4);
    assert (b[0].y1 == 1);
    assert (b[0].x2 == 6);
    assert (b[0].y2 == 7);

    /* This should produce an empty region */
    pixman_region32_init_rects (&r1, boxes3, 2);

    b = pixman_region32_rectangles (&r1, &i);

    assert (i == 0);

    return 0;
}
Ejemplo n.º 14
0
Region& Region::createSubtraction(const Region& a, const Region& b)
{
  pixman_region32_subtract(&m_region, &a.m_region, &b.m_region);
  return *this;
}