LCOV - code coverage report
Current view: directory - gfx/2d - ScaledFontBase.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 45 0 0.0 %
Date: 2012-06-02 Functions: 5 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
       2                 :  * ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla Corporation code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is Mozilla Foundation.
      18                 :  * Portions created by the Initial Developer are Copyright (C) 2011
      19                 :  * the Initial Developer. All Rights Reserved.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *   Matt Woodrow <mwoodrow@mozilla.com>
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      26                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : #include "ScaledFontBase.h"
      39                 : 
      40                 : #include "gfxFont.h"
      41                 : 
      42                 : #ifdef USE_SKIA
      43                 : #include "PathSkia.h"
      44                 : #include "skia/SkPaint.h"
      45                 : #include "skia/SkPath.h"
      46                 : #endif
      47                 : 
      48                 : #ifdef USE_CAIRO
      49                 : #include "PathCairo.h"
      50                 : #endif
      51                 : 
      52                 : #include <vector>
      53                 : #include <cmath>
      54                 : 
      55                 : using namespace std;
      56                 : 
      57                 : namespace mozilla {
      58                 : namespace gfx {
      59                 : 
      60               0 : ScaledFontBase::~ScaledFontBase()
      61                 : {
      62                 : #ifdef USE_SKIA
      63               0 :   SkSafeUnref(mTypeface);
      64                 : #endif
      65                 : #ifdef USE_CAIRO
      66               0 :   cairo_scaled_font_destroy(mScaledFont);
      67                 : #endif
      68               0 : }
      69                 : 
      70               0 : ScaledFontBase::ScaledFontBase(Float aSize)
      71               0 :   : mSize(aSize)
      72                 : {
      73                 : #ifdef USE_SKIA
      74               0 :   mTypeface = NULL;
      75                 : #endif
      76                 : #ifdef USE_CAIRO
      77               0 :   mScaledFont = NULL;
      78                 : #endif
      79               0 : }
      80                 : 
      81                 : TemporaryRef<Path>
      82               0 : ScaledFontBase::GetPathForGlyphs(const GlyphBuffer &aBuffer, const DrawTarget *aTarget)
      83                 : {
      84                 : #ifdef USE_SKIA
      85               0 :   if (aTarget->GetType() == BACKEND_SKIA) {
      86               0 :     SkPaint paint;
      87               0 :     paint.setTypeface(GetSkTypeface());
      88               0 :     paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
      89               0 :     paint.setTextSize(SkFloatToScalar(mSize));
      90                 : 
      91               0 :     std::vector<uint16_t> indices;
      92               0 :     std::vector<SkPoint> offsets;
      93               0 :     indices.resize(aBuffer.mNumGlyphs);
      94               0 :     offsets.resize(aBuffer.mNumGlyphs);
      95                 : 
      96               0 :     for (unsigned int i = 0; i < aBuffer.mNumGlyphs; i++) {
      97               0 :       indices[i] = aBuffer.mGlyphs[i].mIndex;
      98               0 :       offsets[i].fX = SkFloatToScalar(aBuffer.mGlyphs[i].mPosition.x);
      99               0 :       offsets[i].fY = SkFloatToScalar(aBuffer.mGlyphs[i].mPosition.y);
     100                 :     }
     101                 : 
     102               0 :     SkPath path;
     103               0 :     paint.getPosTextPath(&indices.front(), aBuffer.mNumGlyphs*2, &offsets.front(), &path);
     104               0 :     return new PathSkia(path, FILL_WINDING);
     105                 :   }
     106                 : #endif
     107                 : #ifdef USE_CAIRO
     108               0 :   if (aTarget->GetType() == BACKEND_CAIRO) {
     109               0 :     MOZ_ASSERT(mScaledFont);
     110                 : 
     111               0 :     RefPtr<PathBuilder> builder_iface = aTarget->CreatePathBuilder();
     112               0 :     PathBuilderCairo* builder = static_cast<PathBuilderCairo*>(builder_iface.get());
     113                 : 
     114                 :     // Manually build the path for the PathBuilder.
     115               0 :     RefPtr<CairoPathContext> context = builder->GetPathContext();
     116                 : 
     117               0 :     cairo_set_scaled_font(*context, mScaledFont);
     118                 : 
     119                 :     // Convert our GlyphBuffer into an array of Cairo glyphs.
     120               0 :     std::vector<cairo_glyph_t> glyphs(aBuffer.mNumGlyphs);
     121               0 :     for (uint32_t i = 0; i < aBuffer.mNumGlyphs; ++i) {
     122               0 :       glyphs[i].index = aBuffer.mGlyphs[i].mIndex;
     123               0 :       glyphs[i].x = aBuffer.mGlyphs[i].mPosition.x;
     124               0 :       glyphs[i].y = aBuffer.mGlyphs[i].mPosition.y;
     125                 :     }
     126                 : 
     127               0 :     cairo_glyph_path(*context, &glyphs[0], aBuffer.mNumGlyphs);
     128                 : 
     129               0 :     return builder->Finish();
     130                 :   }
     131                 : #endif
     132               0 :   return NULL;
     133                 : }
     134                 : 
     135                 : #ifdef USE_CAIRO
     136                 : void
     137               0 : ScaledFontBase::SetCairoScaledFont(cairo_scaled_font_t* font)
     138                 : {
     139               0 :   MOZ_ASSERT(!mScaledFont);
     140                 : 
     141               0 :   mScaledFont = font;
     142               0 :   cairo_scaled_font_reference(mScaledFont);
     143               0 : }
     144                 : #endif
     145                 : 
     146                 : }
     147                 : }

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