1 files changed, 51 insertions, 0 deletions
diff --git a/gfx/thebes/gfxQuad.h b/gfx/thebes/gfxQuad.h
new file mode 100644
index 000000000..8dd7a26e1
--- /dev/null
+++ b/gfx/thebes/gfxQuad.h
@@ -0,0 +1,51 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GFX_QUAD_H
+#define GFX_QUAD_H
+
+#include "gfxTypes.h"
+#include "gfxRect.h"
+#include "gfxLineSegment.h"
+#include <algorithm>
+
+struct gfxQuad {
+    gfxQuad(const gfxPoint& aOne, const gfxPoint& aTwo, const gfxPoint& aThree, const gfxPoint& aFour)
+    {
+        mPoints[0] = aOne;
+        mPoints[1] = aTwo;
+        mPoints[2] = aThree;
+        mPoints[3] = aFour;
+    }
+
+    bool Contains(const gfxPoint& aPoint)
+    {
+        return (gfxLineSegment(mPoints[0], mPoints[1]).PointsOnSameSide(aPoint, mPoints[2]) &&
+                gfxLineSegment(mPoints[1], mPoints[2]).PointsOnSameSide(aPoint, mPoints[3]) &&
+                gfxLineSegment(mPoints[2], mPoints[3]).PointsOnSameSide(aPoint, mPoints[0]) &&
+                gfxLineSegment(mPoints[3], mPoints[0]).PointsOnSameSide(aPoint, mPoints[1]));
+    }
+
+    gfxRect GetBounds()
+    {
+        gfxFloat min_x, max_x;
+        gfxFloat min_y, max_y;
+
+        min_x = max_x = mPoints[0].x;
+        min_y = max_y = mPoints[0].y;
+
+        for (int i=1; i<4; i++) {
+          min_x = std::min(mPoints[i].x, min_x);
+          max_x = std::max(mPoints[i].x, max_x);
+          min_y = std::min(mPoints[i].y, min_y);
+          max_y = std::max(mPoints[i].y, max_y);
+        }
+        return gfxRect(min_x, min_y, max_x - min_x, max_y - min_y);
+    }
+
+    gfxPoint mPoints[4];
+};
+
+#endif /* GFX_QUAD_H */