forked from AuroraMiddleware/gtk
161 lines
5.1 KiB
C
161 lines
5.1 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.Free
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include <gtk/gtk.h>
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static void
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combo_changed_cb (GtkWidget *combo,
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gpointer data)
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{
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GtkWidget *label = GTK_WIDGET (data);
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gint active;
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active = gtk_combo_box_get_active (GTK_COMBO_BOX (combo));
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gtk_label_set_ellipsize (GTK_LABEL (label), (PangoEllipsizeMode)active);
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}
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static void
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overlay_draw (GtkDrawingArea *da,
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cairo_t *cr,
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int width,
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int height,
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gpointer data)
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{
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GtkWidget *widget = GTK_WIDGET (da);
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PangoLayout *layout;
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const double dashes[] = { 6, 18 };
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GtkAllocation label_allocation;
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GtkRequisition minimum_size, natural_size;
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GtkWidget *label = data;
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gint x, y;
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cairo_translate (cr, -0.5, -0.5);
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cairo_set_line_width (cr, 1);
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cairo_set_source_rgb (cr, 1, 1, 1);
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cairo_rectangle (cr, 0, 0, width, height);
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cairo_fill (cr);
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gtk_widget_translate_coordinates (label, widget, 0, 0, &x, &y);
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layout = gtk_widget_create_pango_layout (widget, "");
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gtk_widget_get_preferred_size (label, &minimum_size, &natural_size);
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pango_layout_set_markup (layout,
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"<span color='#c33'>\342\227\217 requisition</span>\n"
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"<span color='#3c3'>\342\227\217 natural size</span>\n"
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"<span color='#33c'>\342\227\217 allocation</span>", -1);
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pango_cairo_show_layout (cr, layout);
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g_object_unref (layout);
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gtk_widget_get_allocation (label, &label_allocation);
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cairo_rectangle (cr,
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x + 0.5 * (label_allocation.width - minimum_size.width),
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y + 0.5 * (label_allocation.height - minimum_size.height),
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minimum_size.width, minimum_size.height);
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cairo_set_source_rgb (cr, 0.8, 0.2, 0.2);
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cairo_set_dash (cr, NULL, 0, 0);
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cairo_stroke (cr);
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cairo_rectangle (cr, x, y, label_allocation.width, label_allocation.height);
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cairo_set_source_rgb (cr, 0.2, 0.2, 0.8);
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cairo_set_dash (cr, dashes, 2, 0.5);
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cairo_stroke (cr);
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cairo_rectangle (cr,
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x + 0.5 * (label_allocation.width - natural_size.width),
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y + 0.5 * (label_allocation.height - natural_size.height),
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natural_size.width, natural_size.height);
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cairo_set_source_rgb (cr, 0.2, 0.8, 0.2);
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cairo_set_dash (cr, dashes, 2, 12.5);
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cairo_stroke (cr);
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}
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static void
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quit_cb (GtkWidget *widget,
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gpointer data)
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{
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gboolean *done = data;
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*done = TRUE;
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g_main_context_wakeup (NULL);
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}
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int
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main (int argc, char *argv[])
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{
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GtkWidget *window, *vbox, *label;
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GtkWidget *combo, *scale, *overlay, *da;
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gboolean done = FALSE;
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gtk_init ();
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window = gtk_window_new ();
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gtk_window_set_default_size (GTK_WINDOW (window), 400, 300);
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g_signal_connect (window, "destroy", G_CALLBACK (quit_cb), &done);
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vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
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gtk_window_set_child (GTK_WINDOW (window), vbox);
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combo = gtk_combo_box_text_new ();
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scale = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL,
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0, 360, 1);
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label = gtk_label_new ("This label may be ellipsized\nto make it fit.");
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gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo), "NONE");
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gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo), "START");
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gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo), "MIDDLE");
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gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo), "END");
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gtk_combo_box_set_active (GTK_COMBO_BOX (combo), 0);
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gtk_widget_set_halign (label, GTK_ALIGN_CENTER);
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gtk_widget_set_valign (label, GTK_ALIGN_CENTER);
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da = gtk_drawing_area_new ();
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gtk_drawing_area_set_draw_func (GTK_DRAWING_AREA (da), overlay_draw, label, NULL);
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overlay = gtk_overlay_new ();
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gtk_overlay_set_child (GTK_OVERLAY (overlay), da);
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gtk_widget_set_vexpand (overlay, TRUE);
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gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
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gtk_box_append (GTK_BOX (vbox), combo);
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gtk_box_append (GTK_BOX (vbox), scale);
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gtk_box_append (GTK_BOX (vbox), overlay);
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g_object_set_data (G_OBJECT (label), "combo", combo);
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g_signal_connect (combo, "changed", G_CALLBACK (combo_changed_cb), label);
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gtk_widget_show (window);
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while (!done)
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g_main_context_iteration (NULL, TRUE);
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return 0;
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}
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