1 files changed, 65 insertions, 0 deletions
diff --git a/gmathview/gmathview_utils.c b/gmathview/gmathview_utils.c
new file mode 100644
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+++ b/gmathview/gmathview_utils.c
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+/*
+ * gMathView, mathematic expressions viewing & editing widget
+ *
+ *  # Helper functions
+ *
+ * Author : Guillaume Seguin
+ * Email : guillaume@segu.in
+ *
+ * Copyright (c) 2007 Guillaume Seguin <guillaume@segu.in>
+ *
+ * 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 <gmathview.h>
+
+cairo_surface_t*
+g_math_view_copy_surface (cairo_surface_t *source)
+{
+    cairo_surface_t     *dest;
+    cairo_t             *cr;
+
+    if (!source)
+        return NULL;
+
+    dest = cairo_image_surface_create (cairo_image_surface_get_format (source),
+                                       cairo_image_surface_get_width (source),
+                                       cairo_image_surface_get_height (source));
+    cr = cairo_create (dest);
+    cairo_set_source_surface (cr, source, 0, 0);
+    cairo_paint (cr);
+    cairo_destroy (cr);
+
+    return dest;
+}
+
+void
+g_math_view_outline_boxed (cairo_surface_t *surface, GMathBoxed *boxed)
+{
+    cairo_t             *cr;
+
+    if (!surface || !boxed)
+        return;
+
+    cr = cairo_create (surface);
+    cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
+    cairo_set_line_width (cr, OUTLINE_WIDTH);
+    cairo_rectangle (cr, boxed->box.x, boxed->box.y,
+                     boxed->box.width, boxed->box.height);
+    cairo_stroke (cr);
+
+    cairo_destroy (cr);
+}