static gboolean
gtk_rotated_bin_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkRotatedBin *bin = GTK_ROTATED_BIN (widget);
GdkWindow *window;
gdouble s, c;
gdouble w, h;
window = gtk_widget_get_window (widget);
if (gtk_cairo_should_draw_window (cr, window))
{
cairo_surface_t *surface;
GtkAllocation child_area;
if (bin->child && gtk_widget_get_visible (bin->child))
{
surface = gdk_offscreen_window_get_surface (bin->offscreen_window);
gtk_widget_get_allocation (bin->child, &child_area);
/* transform */
s = sin (bin->angle);
c = cos (bin->angle);
w = c * child_area.width + s * child_area.height;
h = s * child_area.width + c * child_area.height;
cairo_translate (cr, (w - child_area.width) / 2, (h - child_area.height) / 2);
cairo_translate (cr, child_area.width / 2, child_area.height / 2);
cairo_rotate (cr, bin->angle);
cairo_translate (cr, -child_area.width / 2, -child_area.height / 2);
/* clip */
cairo_rectangle (cr,
0, 0,
gdk_window_get_width (bin->offscreen_window),
gdk_window_get_height (bin->offscreen_window));
cairo_clip (cr);
/* paint */
cairo_set_source_surface (cr, surface, 0, 0);
cairo_paint (cr);
}
}
if (gtk_cairo_should_draw_window (cr, bin->offscreen_window))
{
gtk_render_background (gtk_widget_get_style_context (widget),
cr,
0, 0,
gdk_window_get_width (bin->offscreen_window),
gdk_window_get_height (bin->offscreen_window));
if (bin->child)
gtk_container_propagate_draw (GTK_CONTAINER (widget),
bin->child,
cr);
}
return FALSE;
}
static gboolean
widget_overlay_draw (GtkWidget *widget, cairo_t *cr)
{
WidgetOverlay *ovl = WIDGET_OVERLAY (widget);
GdkWindow *window;
GtkAllocation area;
gtk_widget_get_allocation (widget, &area);
window = gtk_widget_get_window (widget);
if (gtk_cairo_should_draw_window (cr, window)) {
GList *list;
for (list = ovl->priv->children; list; list = list->next) {
ChildData *cd = (ChildData*) list->data;
if (gtk_widget_get_visible (cd->child)) {
cairo_surface_t *surface;
GtkAllocation child_area;
double x, y;
gtk_widget_get_allocation (cd->child, &child_area);
child_area.width *= cd->scale;
child_area.height *= cd->scale;
switch (cd->halign) {
case WIDGET_OVERLAY_ALIGN_FILL:
case WIDGET_OVERLAY_ALIGN_START:
x = 0;
break;
case WIDGET_OVERLAY_ALIGN_END:
x = area.width - child_area.width;
break;
case WIDGET_OVERLAY_ALIGN_CENTER:
x = (area.width - child_area.width) / 2.;
break;
}
switch (cd->valign) {
case WIDGET_OVERLAY_ALIGN_FILL:
case WIDGET_OVERLAY_ALIGN_START:
y = 0;
break;
case WIDGET_OVERLAY_ALIGN_END:
y = area.height - child_area.height;
break;
case WIDGET_OVERLAY_ALIGN_CENTER:
y = (area.height - child_area.height) / 2.;
break;
}
surface = gdk_offscreen_window_get_surface (cd->offscreen_window);
if (cd->scale == 1.) {
cairo_set_source_surface (cr, surface, x, y);
cairo_paint_with_alpha (cr, cd->alpha);
}
else {
cairo_save (cr);
cairo_scale (cr, cd->scale, cd->scale);
cairo_set_source_surface (cr, surface, x/cd->scale, y/cd->scale);
cairo_paint_with_alpha (cr, cd->alpha);
cairo_restore (cr);
}
cd->x = x;
cd->y = y;
}
if (list->next &&
((ChildData*) list->next->data == ovl->priv->scale_child) &&
(ovl->priv->scale_child->alpha > 0.)) {
cairo_set_source_rgba (cr, 0., 0., 0., .3);
cairo_rectangle (cr, 0, 0,
area.width, area.height);
cairo_fill (cr);
}
}
}
else {
GList *list;
for (list = ovl->priv->children; list; list = list->next) {
ChildData *cd = (ChildData*) list->data;
if (gtk_cairo_should_draw_window (cr, cd->offscreen_window))
gtk_container_propagate_draw (GTK_CONTAINER (widget), cd->child, cr);
}
}
return TRUE;
}
static gboolean
gtk_offscreen_box_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkOffscreenBox *offscreen_box = GTK_OFFSCREEN_BOX (widget);
GdkWindow *window;
window = gtk_widget_get_window (widget);
if (gtk_cairo_should_draw_window (cr, window))
{
cairo_surface_t *surface;
GtkAllocation child_area;
if (offscreen_box->child1 && gtk_widget_get_visible (offscreen_box->child1))
{
surface = gdk_offscreen_window_get_surface (offscreen_box->offscreen_window1);
cairo_set_source_surface (cr, surface, 0, 0);
cairo_paint (cr);
gtk_widget_get_allocation (offscreen_box->child1, &child_area);
cairo_translate (cr, 0, child_area.height);
}
if (offscreen_box->child2 && gtk_widget_get_visible (offscreen_box->child2))
{
surface = gdk_offscreen_window_get_surface (offscreen_box->offscreen_window2);
gtk_widget_get_allocation (offscreen_box->child2, &child_area);
/* transform */
cairo_translate (cr, child_area.width / 2, child_area.height / 2);
cairo_rotate (cr, offscreen_box->angle);
cairo_translate (cr, -child_area.width / 2, -child_area.height / 2);
/* paint */
cairo_set_source_surface (cr, surface, 0, 0);
cairo_paint (cr);
}
}
else if (gtk_cairo_should_draw_window (cr, offscreen_box->offscreen_window1))
{
gtk_render_background (gtk_widget_get_style_context (widget), cr,
0, 0,
gdk_window_get_width (offscreen_box->offscreen_window1),
gdk_window_get_height (offscreen_box->offscreen_window1));
if (offscreen_box->child1)
gtk_container_propagate_draw (GTK_CONTAINER (widget),
offscreen_box->child1,
cr);
}
else if (gtk_cairo_should_draw_window (cr, offscreen_box->offscreen_window2))
{
gtk_render_background (gtk_widget_get_style_context (widget), cr,
0, 0,
gdk_window_get_width (offscreen_box->offscreen_window2),
gdk_window_get_height (offscreen_box->offscreen_window2));
if (offscreen_box->child2)
gtk_container_propagate_draw (GTK_CONTAINER (widget),
offscreen_box->child2,
cr);
}
return FALSE;
}
