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Unified Diff: cc/font_atlas.h

Issue 11122003: [cc] Rename all cc/ filenames to Chromium style (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 8 years, 2 months ago
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Index: cc/font_atlas.h
diff --git a/cc/font_atlas.h b/cc/font_atlas.h
index 638cbb270ce9b24689d5095baf174ade4f4d1a13..2881ee9a55abc92982b77fb0273e6711f42b21ce 100644
--- a/cc/font_atlas.h
+++ b/cc/font_atlas.h
@@ -1,3 +1,70 @@
// 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 CCFontAtlas_h
+#define CCFontAtlas_h
+
+#if USE(ACCELERATED_COMPOSITING)
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "IntRect.h"
+#include "SkBitmap.h"
+
+class SkCanvas;
+
+namespace gfx {
+class Point;
+}
+
+namespace cc {
+
+class Color;
+class FontDescription;
+class GraphicsContext;
+class IntSize;
+
+// This class provides basic ability to draw text onto the heads-up display.
+class CCFontAtlas {
+public:
+ static scoped_ptr<CCFontAtlas> create(SkBitmap bitmap, IntRect asciiToRectTable[128], int fontHeight)
+ {
+ return make_scoped_ptr(new CCFontAtlas(bitmap, asciiToRectTable, fontHeight));
+ }
+ ~CCFontAtlas();
+
+ // Draws multiple lines of text where each line of text is separated by '\n'.
+ // - Correct glyphs will be drawn for ASCII codes in the range 32-127; any characters
+ // outside that range will be displayed as a default rectangle glyph.
+ // - IntSize clip is used to avoid wasting time drawing things that are outside the
+ // target canvas bounds.
+ // - Should only be called only on the impl thread.
+ void drawText(SkCanvas*, const SkPaint&, const std::string& text, const gfx::Point& destPosition, const IntSize& clip) const;
+
+ // Draws the entire atlas at the specified position, just for debugging purposes.
+ void drawDebugAtlas(SkCanvas*, const gfx::Point& destPosition) const;
+
+private:
+ CCFontAtlas(SkBitmap, IntRect asciiToRectTable[128], int fontHeight);
+
+ void drawOneLineOfTextInternal(SkCanvas*, const SkPaint&, const std::string&, const gfx::Point& destPosition) const;
+
+ // The actual texture atlas containing all the pre-rendered glyphs.
+ SkBitmap m_atlas;
+
+ // The look-up tables mapping ascii characters to their IntRect locations on the atlas.
+ IntRect m_asciiToRectTable[128];
+
+ int m_fontHeight;
+
+ DISALLOW_COPY_AND_ASSIGN(CCFontAtlas);
+};
+
+} // namespace cc
+
+#endif // USE(ACCELERATED_COMPOSITING)
+
+#endif
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