1/*
2 * Copyright (C) 2012 Google Inc.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "core/rendering/RenderThemeChromiumFontProvider.h"
28
29#include "core/CSSValueKeywords.h"
30#include "platform/fonts/FontDescription.h"
31
32#include "wtf/StdLibExtras.h"
33#include "wtf/text/WTFString.h"
34
35namespace blink {
36
37// static
38void RenderThemeChromiumFontProvider::setDefaultFontSize(int fontSize)
39{
40    s_defaultFontSize = static_cast<float>(fontSize);
41}
42
43// static
44void RenderThemeChromiumFontProvider::systemFont(CSSValueID valueID, FontDescription& fontDescription)
45{
46    float fontSize = s_defaultFontSize;
47
48    switch (valueID) {
49    case CSSValueWebkitMiniControl:
50    case CSSValueWebkitSmallControl:
51    case CSSValueWebkitControl:
52        // Why 2 points smaller? Because that's what Gecko does. Note that we
53        // are assuming a 96dpi screen, which is the default that we use on
54        // Windows.
55        static const float pointsPerInch = 72.0f;
56        static const float pixelsPerInch = 96.0f;
57        fontSize -= (2.0f / pointsPerInch) * pixelsPerInch;
58        break;
59    default:
60        break;
61    }
62
63    fontDescription.firstFamily().setFamily(defaultGUIFont());
64    fontDescription.setSpecifiedSize(fontSize);
65    fontDescription.setIsAbsoluteSize(true);
66    fontDescription.setGenericFamily(FontDescription::NoFamily);
67    fontDescription.setWeight(FontWeightNormal);
68    fontDescription.setStyle(FontStyleNormal);
69}
70
71} // namespace blink
72