Index: sky/engine/public/web/WebFont.h |
diff --git a/sky/engine/public/web/WebFont.h b/sky/engine/public/web/WebFont.h |
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--- a/sky/engine/public/web/WebFont.h |
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-/* |
- * Copyright (C) 2010 Google Inc. All rights reserved. |
- * |
- * Redistribution and use in source and binary forms, with or without |
- * modification, are permitted provided that the following conditions are |
- * met: |
- * |
- * * Redistributions of source code must retain the above copyright |
- * notice, this list of conditions and the following disclaimer. |
- * * Redistributions in binary form must reproduce the above |
- * copyright notice, this list of conditions and the following disclaimer |
- * in the documentation and/or other materials provided with the |
- * distribution. |
- * * Neither the name of Google Inc. nor the names of its |
- * contributors may be used to endorse or promote products derived from |
- * this software without specific prior written permission. |
- * |
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
- */ |
- |
-#ifndef SKY_ENGINE_PUBLIC_WEB_WEBFONT_H_ |
-#define SKY_ENGINE_PUBLIC_WEB_WEBFONT_H_ |
- |
-#include "../platform/WebCanvas.h" |
-#include "../platform/WebColor.h" |
-#include "../platform/WebCommon.h" |
- |
-namespace blink { |
- |
-struct WebFontDescription; |
-struct WebFloatPoint; |
-struct WebFloatRect; |
-struct WebPoint; |
-struct WebRect; |
-struct WebTextRun; |
- |
-class WebFont { |
-public: |
- virtual ~WebFont() { } |
- |
- BLINK_EXPORT static WebFont* create(const WebFontDescription&); |
- |
- virtual WebFontDescription fontDescription() const = 0; |
- |
- virtual int ascent() const = 0; |
- virtual int descent() const = 0; |
- virtual int height() const = 0; |
- virtual int lineSpacing() const = 0; |
- virtual float xHeight() const = 0; |
- |
- // Draws the text run to the given canvas. The text is positioned at the |
- // given left-hand point at the baseline. |
- // |
- // The text will be clipped to the given clip rect. |canvasIsOpaque| is |
- // used to control whether subpixel antialiasing is possible. If there is a |
- // possibility the area drawn could be semi-transparent, subpixel |
- // antialiasing will be disabled. |
- // |
- // |from| and |to| allow the caller to specify a subrange of the given text |
- // run to draw. If |to| is -1, the entire run will be drawn. |
- virtual void drawText(WebCanvas*, const WebTextRun&, const WebFloatPoint& leftBaseline, WebColor, |
- const WebRect& clip, bool canvasIsOpaque, |
- int from = 0, int to = -1) const = 0; |
- |
- // Measures the width in pixels of the given text run. |
- virtual int calculateWidth(const WebTextRun&) const = 0; |
- |
- // Returns the character offset corresponding to the given horizontal pixel |
- // position as measured from from the left of the run. |
- virtual int offsetForPosition(const WebTextRun&, float position) const = 0; |
- |
- // Returns the rectangle representing the selection rect for the subrange |
- // |from| -> |to| of the given text run. You can use -1 for |to| to specify |
- // the entire run (this will do something similar to calling width()). |
- // |
- // The rect will be positioned as if the text was drawn at the given |
- // |leftBaseline| position. |height| indicates the height of the selection |
- // rect you want, typically this will just be the height() of this font. |
- // |
- // To get the pixel offset of some character (the opposite of |
- // offsetForPosition()), pass in a |leftBaseline| = (0, 0), |from| = 0, and |
- // |to| = the character you want. The right edge of the resulting selection |
- // rect will tell you the right side of the character. |
- virtual WebFloatRect selectionRectForText(const WebTextRun&, const WebFloatPoint& leftBaseline, |
- int height, int from = 0, int to = -1) const = 0; |
-}; |
- |
-} // namespace blink |
- |
-#endif // SKY_ENGINE_PUBLIC_WEB_WEBFONT_H_ |