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authorThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:28:41 -0800
committerThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:28:41 -0800
commit648161bb0edfc3d43db63caed5cc5213bc6cb78f (patch)
tree4b825dc642cb6eb9a060e54bf8d69288fbee4904 /WebCore/platform/graphics/win/SimpleFontDataCairoWin.cpp
parenta65af38181ac7d34544586bdb5cd004de93897ad (diff)
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auto import from //depot/cupcake/@135843
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diff --git a/WebCore/platform/graphics/win/SimpleFontDataCairoWin.cpp b/WebCore/platform/graphics/win/SimpleFontDataCairoWin.cpp
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--- a/WebCore/platform/graphics/win/SimpleFontDataCairoWin.cpp
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-/*
- * Copyright (C) 2008 Apple 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.
- * 3. Neither the name of Apple Computer, Inc. ("Apple") 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 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 "SimpleFontData.h"
-
-#include <windows.h>
-
-#include "Font.h"
-#include "FontCache.h"
-#include "FontDescription.h"
-#include "MathExtras.h"
-#include "NotImplemented.h"
-#include <cairo.h>
-#include <cairo-win32.h>
-#include <mlang.h>
-#include <tchar.h>
-
-namespace WebCore {
-
-void SimpleFontData::platformInit()
-{
- m_scriptCache = 0;
- m_scriptFontProperties = 0;
- m_isSystemFont = false;
- m_syntheticBoldOffset = 0;
-
- if (m_font.useGDI())
- return initGDIFont();
-
- HDC hdc = GetDC(0);
- SaveDC(hdc);
-
- cairo_scaled_font_t* scaledFont = m_font.scaledFont();
- const double metricsMultiplier = cairo_win32_scaled_font_get_metrics_factor(scaledFont) * m_font.size();
-
- cairo_win32_scaled_font_select_font(scaledFont, hdc);
-
- TEXTMETRIC textMetrics;
- GetTextMetrics(hdc, &textMetrics);
- m_ascent = lroundf(textMetrics.tmAscent * metricsMultiplier);
- m_descent = lroundf(textMetrics.tmDescent * metricsMultiplier);
- m_xHeight = m_ascent * 0.56f; // Best guess for xHeight for non-Truetype fonts.
- m_lineGap = lroundf(textMetrics.tmExternalLeading * metricsMultiplier);
- m_lineSpacing = m_ascent + m_descent + m_lineGap;
-
- OUTLINETEXTMETRIC metrics;
- if (GetOutlineTextMetrics(hdc, sizeof(metrics), &metrics) > 0) {
- // This is a TrueType font. We might be able to get an accurate xHeight
- GLYPHMETRICS gm;
- MAT2 mat = { 1, 0, 0, 1 };
- DWORD len = GetGlyphOutline(hdc, 'x', GGO_METRICS, &gm, 0, 0, &mat);
- if (len != GDI_ERROR && gm.gmptGlyphOrigin.y > 0)
- m_xHeight = gm.gmptGlyphOrigin.y * metricsMultiplier;
- }
-
- cairo_win32_scaled_font_done_font(scaledFont);
-
- m_isSystemFont = false;
- m_scriptCache = 0;
- m_scriptFontProperties = 0;
-
- RestoreDC(hdc, -1);
- ReleaseDC(0, hdc);
-}
-
-void SimpleFontData::platformDestroy()
-{
- cairo_font_face_destroy(m_font.fontFace());
- cairo_scaled_font_destroy(m_font.scaledFont());
-
- DeleteObject(m_font.hfont());
-
- platformCommonDestroy();
-}
-
-float SimpleFontData::platformWidthForGlyph(Glyph glyph) const
-{
- if (m_font.useGDI())
- return widthForGDIGlyph(glyph);
-
- HDC hdc = GetDC(0);
- SaveDC(hdc);
-
- cairo_scaled_font_t* scaledFont = m_font.scaledFont();
- cairo_win32_scaled_font_select_font(scaledFont, hdc);
-
- int width;
- GetCharWidthI(hdc, glyph, 1, 0, &width);
-
- cairo_win32_scaled_font_done_font(scaledFont);
-
- RestoreDC(hdc, -1);
- ReleaseDC(0, hdc);
-
- const double metricsMultiplier = cairo_win32_scaled_font_get_metrics_factor(scaledFont) * m_font.size();
- return width * metricsMultiplier;
-}
-
-void SimpleFontData::setFont(cairo_t* cr) const
-{
- ASSERT(cr);
- m_font.setFont(cr);
-}
-
-}