1 files changed, 74 insertions, 0 deletions
diff --git a/src/gtk-helpers/autowrapped_label.c b/src/gtk-helpers/autowrapped_label.c
new file mode 100644
index 00000000..01d8856b
--- /dev/null
+++ b/src/gtk-helpers/autowrapped_label.c
@@ -0,0 +1,74 @@
+/*
+    Copyright (C) 2011  ABRT Team
+    Copyright (C) 2011  RedHat inc.
+
+    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 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+#include <gtk/gtk.h>
+#include "abrtlib.h"
+
+/*
+ * GTK doesn't re-wrap GtkLabels which have line wrapping set to true.
+ * The line wrapped label in VBox looks like this:
+ * |----------------------------------------|
+ * |----------------------------------------|
+ * | word word word word                    |
+ * | word word word word                    |
+ * | word word                              |
+ * |----------------------------------------|
+ * |----------------------------------------|
+ * So every project copy-pastes this code to make labels widen
+ * and shrink horizontally on resize.
+ */
+
+static void rewrap_label_to_parent_size(GtkWidget *widget,
+                GtkAllocation *allocation,
+                gpointer data)
+{
+    GtkLabel *label = GTK_LABEL(widget);
+    PangoLayout *layout = gtk_label_get_layout(label);
+
+    int lw_old, lh_old;
+    pango_layout_get_pixel_size(layout, &lw_old, &lh_old);
+
+    /* Already right size? */
+    if (lw_old == allocation->width)
+        return;
+
+    /* Rewrap text to new width */
+    pango_layout_set_width(layout, allocation->width * PANGO_SCALE);
+
+    /* Did text height change as a result? */
+    int lh;
+    pango_layout_get_pixel_size(layout, NULL, &lh);
+    if (lh != lh_old) /* yes, resize label height */
+        gtk_widget_set_size_request(widget, -1, lh);
+}
+
+void make_label_autowrap_on_resize(GtkLabel *label)
+{
+    // So far, only tested to work on labels which were set up as:
+    //gtk_label_set_justify(label, GTK_JUSTIFY_LEFT);
+    //gtk_misc_set_alignment(GTK_MISC(label), /*xalign:*/ 0.0, /*yalign:*/ 0.0);
+
+    /* Makes no sense on non-wrapped labels, so we can as well
+     * set wrapping to "on" unconditionally, istead of making it a requirement
+     */
+    gtk_label_set_line_wrap(label, TRUE);
+    g_signal_connect(G_OBJECT(label), "size-allocate", G_CALLBACK(rewrap_label_to_parent_size), NULL);
+
+    // So far, only tested to work on labels which were set up as:
+    //gtk_box_pack_start(box, label, /*expand*/ false, /*fill*/ false, /*padding*/ 0);
+}