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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.Free
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <gtk/gtk.h>
static void
combo_changed_cb (GtkWidget *combo,
gpointer data)
{
GtkWidget *label = GTK_WIDGET (data);
int active;
active = gtk_combo_box_get_active (GTK_COMBO_BOX (combo));
gtk_label_set_ellipsize (GTK_LABEL (label), (PangoEllipsizeMode)active);
}
static void
overlay_draw (GtkDrawingArea *da,
cairo_t *cr,
int width,
int height,
gpointer data)
{
GtkWidget *widget = GTK_WIDGET (da);
PangoLayout *layout;
const double dashes[] = { 6, 18 };
GtkAllocation label_allocation;
GtkRequisition minimum_size, natural_size;
GtkWidget *label = data;
double x, y;
cairo_translate (cr, -0.5, -0.5);
cairo_set_line_width (cr, 1);
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_rectangle (cr, 0, 0, width, height);
cairo_fill (cr);
gtk_widget_translate_coordinates (label, widget, 0, 0, &x, &y);
layout = gtk_widget_create_pango_layout (widget, "");
gtk_widget_get_preferred_size (label, &minimum_size, &natural_size);
pango_layout_set_markup (layout,
"<span color='#c33'>\342\227\217 requisition</span>\n"
"<span color='#3c3'>\342\227\217 natural size</span>\n"
"<span color='#33c'>\342\227\217 allocation</span>", -1);
pango_cairo_show_layout (cr, layout);
g_object_unref (layout);
gtk_widget_get_allocation (label, &label_allocation);
cairo_rectangle (cr,
x + 0.5 * (label_allocation.width - minimum_size.width),
y + 0.5 * (label_allocation.height - minimum_size.height),
minimum_size.width, minimum_size.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);
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);
}
static void
quit_cb (GtkWidget *widget,
gpointer data)
{
gboolean *done = data;
*done = TRUE;
g_main_context_wakeup (NULL);
}
int
main (int argc, char *argv[])
{
GtkWidget *window, *vbox, *label;
GtkWidget *combo, *scale, *overlay, *da;
gboolean done = FALSE;
gtk_init ();
window = gtk_window_new ();
gtk_window_set_default_size (GTK_WINDOW (window), 400, 300);
g_signal_connect (window, "destroy", G_CALLBACK (quit_cb), &done);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
gtk_window_set_child (GTK_WINDOW (window), vbox);
combo = gtk_combo_box_text_new ();
scale = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL,
0, 360, 1);
label = gtk_label_new ("This label may be ellipsized\nto make it fit.");
gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo), "NONE");
gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo), "START");
gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo), "MIDDLE");
gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo), "END");
gtk_combo_box_set_active (GTK_COMBO_BOX (combo), 0);
gtk_widget_set_halign (label, GTK_ALIGN_CENTER);
gtk_widget_set_valign (label, GTK_ALIGN_CENTER);
da = gtk_drawing_area_new ();
gtk_drawing_area_set_draw_func (GTK_DRAWING_AREA (da), overlay_draw, label, NULL);
overlay = gtk_overlay_new ();
gtk_overlay_set_child (GTK_OVERLAY (overlay), da);
gtk_widget_set_vexpand (overlay, TRUE);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
gtk_box_append (GTK_BOX (vbox), combo);
gtk_box_append (GTK_BOX (vbox), scale);
gtk_box_append (GTK_BOX (vbox), overlay);
g_object_set_data (G_OBJECT (label), "combo", combo);
g_signal_connect (combo, "changed", G_CALLBACK (combo_changed_cb), label);
gtk_widget_show (window);
while (!done)
g_main_context_iteration (NULL, TRUE);
return 0;
}
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