/** Marks the entire visible area for update.
* Throws out old updates, since everything will be updated anyway.
*/
void
ddisplay_add_update_all(DDisplay *ddisp)
{
if (ddisp->update_areas != NULL) {
ddisplay_free_update_areas(ddisp);
}
if (ddisp->display_areas != NULL) {
ddisplay_free_display_areas(ddisp);
}
ddisplay_add_update(ddisp, &ddisp->visible);
}
/** Marks a rectangle for update, with a pixel border around it.
*/
void
ddisplay_add_update_with_border(DDisplay *ddisp, const Rectangle *rect,
int pixel_border)
{
Rectangle r;
real size = ddisplay_untransform_length(ddisp, pixel_border+1);
r.left = rect->left-size;
r.top = rect->top-size;
r.right = rect->right+size;
r.bottom = rect->bottom+size;
ddisplay_add_update(ddisp, &r);
}
void
diagram_add_update(Diagram *dia, Rectangle *update)
{
GSList *l;
DDisplay *ddisp;
l = dia->displays;
while (l!=NULL) {
ddisp = (DDisplay *) l->data;
ddisplay_add_update(ddisp, update);
l = g_slist_next(l);
}
}
void
ddisplay_add_update_pixels(DDisplay *ddisp, Point *point,
int pixel_width, int pixel_height)
{
Rectangle rect;
real size_x, size_y;
size_x = ddisplay_untransform_length(ddisp, pixel_width+1);
size_y = ddisplay_untransform_length(ddisp, pixel_height+1);
rect.left = point->x - size_x/2.0;
rect.top = point->y - size_y/2.0;
rect.right = point->x + size_x/2.0;
rect.bottom = point->y + size_y/2.0;
ddisplay_add_update(ddisp, &rect);
}
