Merge from Chromium at DEPS revision r190564
This commit was generated by merge_to_master.py.
Change-Id: Icadecbce29854b8fa25fd335b2c1949b5ca5d170
diff --git a/cc/quads/draw_quad.h b/cc/quads/draw_quad.h
new file mode 100644
index 0000000..2636a07
--- /dev/null
+++ b/cc/quads/draw_quad.h
@@ -0,0 +1,119 @@
+// Copyright 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CC_QUADS_DRAW_QUAD_H_
+#define CC_QUADS_DRAW_QUAD_H_
+
+#include "base/callback.h"
+#include "cc/base/cc_export.h"
+#include "cc/quads/shared_quad_state.h"
+#include "cc/resources/resource_provider.h"
+
+namespace cc {
+
+// DrawQuad is a bag of data used for drawing a quad. Because different
+// materials need different bits of per-quad data to render, classes that derive
+// from DrawQuad store additional data in their derived instance. The Material
+// enum is used to "safely" downcast to the derived class.
+class CC_EXPORT DrawQuad {
+ public:
+ enum Material {
+ INVALID,
+ CHECKERBOARD,
+ DEBUG_BORDER,
+ IO_SURFACE_CONTENT,
+ RENDER_PASS,
+ TEXTURE_CONTENT,
+ SOLID_COLOR,
+ TILED_CONTENT,
+ YUV_VIDEO_CONTENT,
+ STREAM_VIDEO_CONTENT,
+ };
+
+ virtual ~DrawQuad();
+
+ scoped_ptr<DrawQuad> Copy(
+ const SharedQuadState* copied_shared_quad_state) const;
+
+ // TODO(danakj): Chromify or remove these SharedQuadState helpers.
+ const gfx::Transform& quadTransform() const { return shared_quad_state->content_to_target_transform; }
+ gfx::Rect visibleContentRect() const { return shared_quad_state->visible_content_rect; }
+ gfx::Rect clipRect() const { return shared_quad_state->clip_rect; }
+ bool isClipped() const { return shared_quad_state->is_clipped; }
+ float opacity() const { return shared_quad_state->opacity; }
+
+ Material material;
+
+ // This rect, after applying the quad_transform(), gives the geometry that
+ // this quad should draw to.
+ gfx::Rect rect;
+
+ // This specifies the region of the quad that is opaque.
+ gfx::Rect opaque_rect;
+
+ // Allows changing the rect that gets drawn to make it smaller. This value
+ // should be clipped to |rect|.
+ gfx::Rect visible_rect;
+
+ // By default blending is used when some part of the quad is not opaque.
+ // With this setting, it is possible to force blending on regardless of the
+ // opaque area.
+ bool needs_blending;
+
+ // Stores state common to a large bundle of quads; kept separate for memory
+ // efficiency. There is special treatment to reconstruct these pointers
+ // during serialization.
+ const SharedQuadState* shared_quad_state;
+
+ bool IsDebugQuad() const { return material == DEBUG_BORDER; }
+
+ bool ShouldDrawWithBlending() const {
+ return needs_blending || shared_quad_state->opacity < 1.0f ||
+ !opaque_rect.Contains(visible_rect);
+ }
+
+ typedef base::Callback<ResourceProvider::ResourceId(
+ ResourceProvider::ResourceId)> ResourceIteratorCallback;
+ virtual void IterateResources(const ResourceIteratorCallback& callback) = 0;
+
+ // Is the left edge of this tile aligned with the originating layer's
+ // left edge?
+ bool IsLeftEdge() const { return !rect.x(); }
+
+ // Is the top edge of this tile aligned with the originating layer's
+ // top edge?
+ bool IsTopEdge() const { return !rect.y(); }
+
+ // Is the right edge of this tile aligned with the originating layer's
+ // right edge?
+ bool IsRightEdge() const {
+ return rect.right() == shared_quad_state->content_bounds.width();
+ }
+
+ // Is the bottom edge of this tile aligned with the originating layer's
+ // bottom edge?
+ bool IsBottomEdge() const {
+ return rect.bottom() == shared_quad_state->content_bounds.height();
+ }
+
+ // Is any edge of this tile aligned with the originating layer's
+ // corresponding edge?
+ bool IsEdge() const {
+ return IsLeftEdge() || IsTopEdge() || IsRightEdge() || IsBottomEdge();
+ }
+
+ protected:
+ DrawQuad();
+
+ void SetAll(const SharedQuadState* shared_quad_state,
+ Material material,
+ gfx::Rect rect,
+ gfx::Rect opaque_rect,
+ gfx::Rect visible_rect,
+ bool needs_blending);
+};
+
+}
+
+#endif // CC_QUADS_DRAW_QUAD_H_