+++ /dev/null
-/*
- * Copyright (C) 2012 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:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. 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.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 APPLE OR ITS 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.
- */
-
-#include "config.h"
-
-#include "CompositorHUDFontAtlas.h"
-
-#include "Font.h"
-#include "FontCache.h"
-#include "FontDescription.h"
-#include "GraphicsContext.h"
-#include "PlatformContextSkia.h"
-#include "SkCanvas.h"
-#include "SkDevice.h"
-#include "TextRun.h"
-#include "skia/ext/platform_canvas.h"
-
-using WebKit::WebRect;
-
-namespace WebCore {
-
-#define ATLAS_SIZE 128
-
-static void wrapPositionIfNeeded(IntPoint& position, int textWidth, int textHeight)
-{
- if (position.x() + textWidth > ATLAS_SIZE)
- position = IntPoint(0, position.y() + textHeight);
-}
-
-// Paints the font into the atlas, from left-to-right, top-to-bottom, starting at
-// startingPosition. At the same time, it updates the ascii-to-WebRect mapping for
-// each character. By doing things this way, it is possible to support variable-width
-// fonts and multiple fonts on the same atlas.
-SkBitmap CompositorHUDFontAtlas::generateFontAtlas(WebRect asciiToRectTable[128], int& fontHeight)
-{
- fontHeight = 14;
-
- OwnPtr<SkCanvas> canvas = adoptPtr(skia::CreateBitmapCanvas(ATLAS_SIZE, ATLAS_SIZE, false /* opaque */));
-
- PlatformContextSkia platformContext(canvas.get());
- GraphicsContext atlasContext(&platformContext);
- atlasContext.setShouldSmoothFonts(false);
-
- // Clear the entire texture atlas to transparent before drawing fonts.
- atlasContext.setFillColor(Color(0, 0, 0, 0), ColorSpaceDeviceRGB);
- atlasContext.clearRect(FloatRect(0, 0, ATLAS_SIZE, ATLAS_SIZE));
-
- // FIXME: monospace font does not work as expected.
- FontDescription fontDescription;
- fontDescription.setGenericFamily(FontDescription::MonospaceFamily);
- fontDescription.setComputedSize(fontHeight);
-
- FontCachePurgePreventer fontCachePurgePreventer;
-
- int textHeight = fontDescription.computedPixelSize();
- IntPoint position(0, textHeight);
- // This is a dirty little trick to account for overhang letters like g, p, j.
- int inflation = textHeight / 3;
-
- Font font(fontDescription, 0, 0);
- font.update(0);
-
- Color fontColor(255, 0, 0);
- atlasContext.setStrokeColor(fontColor, ColorSpaceDeviceRGB);
- atlasContext.setFillColor(fontColor, ColorSpaceDeviceRGB);
-
- // First, draw a generic rect that will be used for special and unknown characters that have nothing else to render.
- {
- int textWidth = textHeight / 2;
- wrapPositionIfNeeded(position, textWidth, textHeight + inflation);
- atlasContext.strokeRect(FloatRect(FloatPoint(position.x() + 1, position.y() - textHeight + 1 + inflation), FloatSize(textWidth - 2, textHeight - 2 - inflation)), 1);
-
- // Initialize the rect that would be copied when drawing this glyph from the atlas.
- asciiToRectTable[0] = WebRect(position.x(), position.y() - textHeight, textWidth, textHeight + inflation);
-
- // Increment to the position where the next glyph will be placed.
- position.setX(position.x() + textWidth);
- }
-
- // Then, draw the ASCII characters.
- for (LChar i = 1; i < 128; ++i) {
- if (i < 32) {
- // Special characters will simply use the the default glyph.
- asciiToRectTable[i] = asciiToRectTable[0];
- continue;
- }
-
- String str;
- str.append(i);
- TextRun text(str);
-
- int textWidth = round(font.width(text));
- wrapPositionIfNeeded(position, textWidth, textHeight + inflation);
- atlasContext.drawText(font, text, position);
-
- // Initialize the rect that would be copied when drawing this glyph from the atlas.
- asciiToRectTable[i] = WebRect(position.x(), position.y() - textHeight, textWidth, textHeight + inflation);
-
- // Increment to the position where the next glyph will be placed.
- position.setX(position.x() + textWidth);
- }
-
- SkBitmap copy;
- const SkBitmap& source = canvas->getDevice()->accessBitmap(false);
- source.copyTo(©, source.config());
- return copy;
-}
-
-} // namespace WebCore
+++ /dev/null
-/*
- * Copyright (C) 2012 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:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. 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.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 APPLE OR ITS 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 CompositorHUDFontAtlas_h
-#define CompositorHUDFontAtlas_h
-
-#include "SkBitmap.h"
-#include <public/WebRect.h>
-
-namespace WebCore {
-
-class CompositorHUDFontAtlas {
-public:
- // This is a helper function that can generate a font atlas suitable for the compositor's heads up display.
- // Returns a bitmap containing glyphs and populates asciiToRectTable with the
- // location of each glyph.
- static SkBitmap generateFontAtlas(WebKit::WebRect asciiToRectTable[128], int& fontHeight);
-};
-
-} // namespace WebCore
-
-#endif // CompositorHUDFontAtlas_h
-
git://git.webkit.org / WebKit-https.git / commitdiff