gsk: Add GskRoundedRect

It's essentially a port of GtkRoundedBox to graphene.

1 files changed, 96 insertions, 0 deletions

diff --git a/gsk/gskroundedrect.h b/gsk/gskroundedrect.h
new file mode 100644
index 0000000000..96551edd43
--- /dev/null
+++ b/gsk/gskroundedrect.h
@@ -0,0 +1,96 @@
+/* GSK - The GTK Scene Kit
+ *
+ * Copyright 2016  Endless
+ *
+ * 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/>.
+ */
+
+#ifndef __GSK_ROUNDED_RECT_H__
+#define __GSK_ROUNDED_RECT_H__
+
+#if !defined (__GSK_H_INSIDE__) && !defined (GSK_COMPILATION)
+#error "Only <gsk/gsk.h> can be included directly."
+#endif
+
+#include <gsk/gsktypes.h>
+
+G_BEGIN_DECLS
+
+/**
+ * GSK_ROUNDED_RECT_INIT:
+ * @_x: the X coordinate of the origin
+ * @_y: the Y coordinate of the origin
+ * @_w: the width
+ * @_h: the height
+ *
+ * Initializes a #GskRoundedRect when declaring it.
+ *
+ * Since: 3.90
+ */
+#define GSK_ROUNDED_RECT_INIT(_x,_y,_w,_h)       (GskRoundedRect) { .rect = GRAPHENE_RECT_INIT(_x,_y,_w,_h) }
+
+/**
+ * GskRoundedRect:
+ * @bounds: the bounds of the rectangle
+ * @corner: the size of the 4 rounded corners
+ *
+ * A rectanglular region with rounded corners.
+ *
+ * Application code should normalize rectangles using gsk_rounded_rect_normalize();
+ * this function will ensure that the bounds of the rectanlge are normalized
+ * and ensure that the corner values are positive and the corners do not overlap.
+ * All functions taking a #GskRoundedRect as an argument will internally operate on
+ * a normalized copy; all functions returning a #GskRoundedRect will always return
+ * a normalized one.
+ *
+ * Since: 3.90
+ */
+typedef struct _GskRoundedRect           GskRoundedRect;
+
+struct _GskRoundedRect
+{
+  graphene_rect_t bounds;
+
+  graphene_size_t corner[4];
+};
+
+GDK_AVAILABLE_IN_3_90
+GskRoundedRect *        gsk_rounded_rect_init                   (GskRoundedRect           *self,
+                                                                 const graphene_rect_t    *rect,
+                                                                 const graphene_size_t    *top_left,
+                                                                 const graphene_size_t    *top_right,
+                                                                 const graphene_size_t    *bottom_right,
+                                                                 const graphene_size_t    *bottom_left);
+GDK_AVAILABLE_IN_3_90
+GskRoundedRect *        gsk_rounded_rect_init_copy              (GskRoundedRect           *self,
+                                                                 const GskRoundedRect     *src);
+GDK_AVAILABLE_IN_3_90
+GskRoundedRect *        gsk_rounded_rect_init_from_rect         (GskRoundedRect           *self,
+                                                                 const graphene_rect_t    *bounds,
+                                                                 float                     radius);
+
+GDK_AVAILABLE_IN_3_90
+GskRoundedRect *        gsk_rounded_rect_normalize              (GskRoundedRect           *self);
+
+GDK_AVAILABLE_IN_3_90
+GskRoundedRect *        gsk_rounded_rect_offset                 (GskRoundedRect           *self,
+                                                                 float                     dx,
+                                                                 float                     dy);
+
+GDK_AVAILABLE_IN_3_90
+gboolean                gsk_rounded_rect_is_rectilinear         (GskRoundedRect           *self);
+
+G_END_DECLS
+
+#endif /* __GSK_ROUNDED_RECT_H__ */