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authorJörg Frings-Fürst <debian@jff.email>2020-03-22 17:05:56 +0100
committerJörg Frings-Fürst <debian@jff.email>2020-03-22 17:05:56 +0100
commit8eb2b297d6e03975afc17e1d468aa8913639e1a9 (patch)
tree21d1aaab420f11d16e64dd776c30614fffabd3de /src/page-icon.vala
parentcf2cbd3850aa6913cb47226bbe95c3bdaf369dec (diff)
New upstream version 3.36.0upstream/3.36.0
Diffstat (limited to 'src/page-icon.vala')
-rw-r--r--src/page-icon.vala76
1 files changed, 76 insertions, 0 deletions
diff --git a/src/page-icon.vala b/src/page-icon.vala
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+/*
+ * Copyright (C) 2009-2017 Canonical Ltd.
+ * Author: Robert Ancell <robert.ancell@canonical.com>,
+ * Eduard Gotwig <g@ox.io>
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later
+ * version. See http://www.gnu.org/copyleft/gpl.html the full text of the
+ * license.
+ */
+
+public class PageIcon : Gtk.DrawingArea
+{
+ private string text;
+ private double r;
+ private double g;
+ private double b;
+ private const int MINIMUM_WIDTH = 20;
+
+ public PageIcon (string text, double r = 1.0, double g = 1.0, double b = 1.0)
+ {
+ this.text = text;
+ this.r = r;
+ this.g = g;
+ this.b = b;
+ }
+
+ public override void get_preferred_width (out int minimum_width, out int natural_width)
+ {
+ minimum_width = natural_width = MINIMUM_WIDTH;
+ }
+
+ public override void get_preferred_height (out int minimum_height, out int natural_height)
+ {
+ minimum_height = natural_height = (int) Math.round (MINIMUM_WIDTH * Math.SQRT2);
+ }
+
+ public override void get_preferred_height_for_width (int width, out int minimum_height, out int natural_height)
+ {
+ minimum_height = natural_height = (int) (width * Math.SQRT2);
+ }
+
+ public override void get_preferred_width_for_height (int height, out int minimum_width, out int natural_width)
+ {
+ minimum_width = natural_width = (int) (height / Math.SQRT2);
+ }
+
+ public override bool draw (Cairo.Context c)
+ {
+ var w = get_allocated_width ();
+ var h = get_allocated_height ();
+ if (w * Math.SQRT2 > h)
+ w = (int) Math.round (h / Math.SQRT2);
+ else
+ h = (int) Math.round (w * Math.SQRT2);
+
+ c.translate ((get_allocated_width () - w) / 2, (get_allocated_height () - h) / 2);
+
+ c.rectangle (0.5, 0.5, w - 1, h - 1);
+
+ c.set_source_rgb (r, g, b);
+ c.fill_preserve ();
+
+ c.set_line_width (1.0);
+ c.set_source_rgb (0.0, 0.0, 0.0);
+ c.stroke ();
+
+ Cairo.TextExtents extents;
+ c.text_extents (text, out extents);
+ c.translate ((w - extents.width) * 0.5 - 0.5, (h + extents.height) * 0.5 - 0.5);
+ c.show_text (text);
+
+ return true;
+ }
+}