native-layout: Introduce GtkExtendedLayout interface.

1 files changed, 125 insertions, 8 deletions

diff --git a/tests/testellipsise.c b/tests/testellipsise.c
index 0783d619da..5b8b46dabb 100644
--- a/tests/testellipsise.c
+++ b/tests/testellipsise.c
@@ -26,6 +26,21 @@
 #include <gtk/gtk.h>
 
 static void
+redraw_event_box (GtkWidget *widget)
+{
+  while (widget)
+    {
+      if (GTK_IS_EVENT_BOX (widget))
+        {
+          gtk_widget_queue_draw (widget);
+          break;
+        }
+
+      widget = gtk_widget_get_parent (widget);
+    }
+}
+
+static void
 combo_changed_cb (GtkWidget *combo,
 		  gpointer   data)
 {
@@ -33,33 +48,135 @@ combo_changed_cb (GtkWidget *combo,
   gint active;
 
   active = gtk_combo_box_get_active (GTK_COMBO_BOX (combo));
-  
   gtk_label_set_ellipsize (GTK_LABEL (label), (PangoEllipsizeMode)active);
+  redraw_event_box (label);
+}
+
+static void
+scale_changed_cb (GtkRange *range,
+		  gpointer   data)
+{
+  double angle = gtk_range_get_value (range);
+  GtkWidget *label = GTK_WIDGET (data);
+
+  gtk_label_set_angle (GTK_LABEL (label), angle);
+  redraw_event_box (label);
+}
+
+static gboolean
+ebox_expose_event_cb (GtkWidget      *widget,
+                      GdkEventExpose *event,
+                      gpointer        data)
+{
+  PangoLayout *layout;
+  const double dashes[] = { 6, 18 };
+  GtkRequisition natural_size;
+  GtkWidget *label = data;
+  gint x, y, dx, dy;
+  gchar *markup;
+  cairo_t *cr;
+
+  gtk_widget_translate_coordinates (label, widget, 0, 0, &x, &y);
+
+  cr = gdk_cairo_create (widget->window);
+  cairo_translate (cr, -0.5, -0.5);
+  cairo_set_line_width (cr, 1);
+
+  cairo_rectangle (cr,
+                   x + 0.5 * (label->allocation.width - label->requisition.width),
+                   y + 0.5 * (label->allocation.height - label->requisition.height),
+                   label->requisition.width, label->requisition.height);
+  cairo_set_source_rgb (cr, 0.8, 0.2, 0.2);
+  cairo_set_dash (cr, NULL, 0, 0);
+  cairo_stroke (cr);
+
+  cairo_rectangle (cr, x, y, label->allocation.width, label->allocation.height);
+  cairo_set_source_rgb (cr, 0.2, 0.2, 0.8);
+  cairo_set_dash (cr, dashes, 2, 0.5);
+  cairo_stroke (cr);
+
+  gtk_extended_layout_get_desired_size (GTK_EXTENDED_LAYOUT (label),
+                                        NULL, &natural_size);
+
+  cairo_rectangle (cr,
+                   x + 0.5 * (label->allocation.width - natural_size.width),
+                   y + 0.5 * (label->allocation.height - natural_size.height),
+                   natural_size.width, natural_size.height);
+  cairo_set_source_rgb (cr, 0.2, 0.8, 0.2);
+  cairo_set_dash (cr, dashes, 2, 12.5);
+  cairo_stroke (cr);
+
+  markup = g_strdup_printf (
+    "<span color='#c33'>\342\200\242 requisition:\t%dx%d</span>\n"
+    "<span color='#3c3'>\342\200\242 natural size:\t%dx%d</span>\n"
+    "<span color='#33c'>\342\200\242 allocation:\t%dx%d</span>",
+    label->requisition.width, label->requisition.height,
+    natural_size.width, natural_size.height,
+    label->allocation.width, label->allocation.height);
+
+  layout = gtk_widget_create_pango_layout (widget, NULL);
+  pango_layout_set_markup (layout, markup, -1);
+  pango_layout_get_pixel_size (layout, &dx, &dy);
+
+  g_free (markup);
+
+  cairo_translate (cr, 0, widget->allocation.height - dy - 8);
+
+  cairo_set_source_rgba (cr, 1, 1, 1, 0.8);
+  cairo_rectangle (cr, 0, 0, dx + 12, dy + 8);
+  cairo_fill (cr);
+
+  cairo_translate (cr, 6, 4);
+  pango_cairo_show_layout (cr, layout);
+
+  g_object_unref (layout);
+  cairo_destroy (cr);
+
+  return FALSE;
 }
 
 int
 main (int argc, char *argv[])
 {
-  GtkWidget *window, *vbox, *hbox, *label, *combo;
+  GtkWidget *window, *vbox, *label;
+  GtkWidget *combo, *scale, *align, *ebox;
 
   gtk_init (&argc, &argv);
 
   window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  gtk_container_set_border_width (GTK_CONTAINER (window), 12);
+  gtk_window_set_default_size (GTK_WINDOW (window), 400, 300);
   g_signal_connect (window, "destroy", G_CALLBACK (gtk_main_quit), NULL);
-  vbox = gtk_vbox_new (0, FALSE);
+
+  vbox = gtk_vbox_new (FALSE, 6);
   gtk_container_add (GTK_CONTAINER (window), vbox);
-  hbox = gtk_hbox_new (0, FALSE);
-  gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 0);
-  label = gtk_label_new ("This label may be ellipsized\nto make it fit.");
-  gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 0);
+
   combo = gtk_combo_box_new_text ();
+  scale = gtk_hscale_new_with_range (0, 360, 1);
+  label = gtk_label_new ("This label may be ellipsized\nto make it fit.");
+
   gtk_combo_box_append_text (GTK_COMBO_BOX (combo), "NONE");
   gtk_combo_box_append_text (GTK_COMBO_BOX (combo), "START");
   gtk_combo_box_append_text (GTK_COMBO_BOX (combo), "MIDDLE");
   gtk_combo_box_append_text (GTK_COMBO_BOX (combo), "END");
   gtk_combo_box_set_active (GTK_COMBO_BOX (combo), 0);
-  gtk_box_pack_start (GTK_BOX (hbox), combo, TRUE, TRUE, 0);
+
+  align = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
+  gtk_container_add (GTK_CONTAINER (align), label);
+
+  ebox = gtk_event_box_new ();
+  gtk_widget_set_app_paintable (ebox, TRUE);
+  gtk_container_add (GTK_CONTAINER (ebox), align);
+
+  gtk_box_pack_start (GTK_BOX (vbox), combo, FALSE, TRUE, 0);
+  gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, TRUE, 0);
+  gtk_box_pack_start (GTK_BOX (vbox), ebox, TRUE, TRUE, 0);
+
+  g_object_set_data (G_OBJECT (label), "combo", combo);
+
   g_signal_connect (combo, "changed", G_CALLBACK (combo_changed_cb), label);
+  g_signal_connect (scale, "value-changed", G_CALLBACK (scale_changed_cb), label);
+  g_signal_connect_after (ebox, "expose-event", G_CALLBACK (ebox_expose_event_cb), label);
 
   gtk_widget_show_all (window);