1/*
2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
3 *           (C) 2000 Antti Koivisto (koivisto@kde.org)
4 *           (C) 2000 Dirk Mueller (mueller@kde.org)
5 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
6 * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16 * Library General Public License for more details.
17 *
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIother.m_  If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USm_
22 *
23 */
24
25#ifndef FontDescription_h
26#define FontDescription_h
27
28#include "FontFamily.h"
29#include "FontOrientation.h"
30#include "FontRenderingMode.h"
31#include "FontSmoothingMode.h"
32#include "FontTraitsMask.h"
33#include "FontWidthVariant.h"
34#include "TextOrientation.h"
35#include "TextRenderingMode.h"
36
37namespace WebCore {
38
39enum FontWeight {
40    FontWeight100,
41    FontWeight200,
42    FontWeight300,
43    FontWeight400,
44    FontWeight500,
45    FontWeight600,
46    FontWeight700,
47    FontWeight800,
48    FontWeight900,
49    FontWeightNormal = FontWeight400,
50    FontWeightBold = FontWeight700
51};
52
53class FontDescription {
54public:
55    enum GenericFamilyType { NoFamily, StandardFamily, SerifFamily, SansSerifFamily,
56                             MonospaceFamily, CursiveFamily, FantasyFamily };
57
58    FontDescription()
59        : m_specifiedSize(0)
60        , m_computedSize(0)
61        , m_orientation(Horizontal)
62        , m_textOrientation(TextOrientationVerticalRight)
63        , m_widthVariant(RegularWidth)
64        , m_italic(false)
65        , m_smallCaps(false)
66        , m_isAbsoluteSize(false)
67        , m_weight(FontWeightNormal)
68        , m_genericFamily(NoFamily)
69        , m_usePrinterFont(false)
70        , m_renderingMode(NormalRenderingMode)
71        , m_keywordSize(0)
72        , m_fontSmoothing(AutoSmoothing)
73        , m_textRendering(AutoTextRendering)
74        , m_isSpecifiedFont(false)
75    {
76    }
77
78    bool operator==(const FontDescription&) const;
79    bool operator!=(const FontDescription& other) const { return !(*this == other); }
80
81    const FontFamily& family() const { return m_familyList; }
82    FontFamily& firstFamily() { return m_familyList; }
83    float specifiedSize() const { return m_specifiedSize; }
84    float computedSize() const { return m_computedSize; }
85    bool italic() const { return m_italic; }
86    int computedPixelSize() const { return int(m_computedSize + 0.5f); }
87    bool smallCaps() const { return m_smallCaps; }
88    bool isAbsoluteSize() const { return m_isAbsoluteSize; }
89    FontWeight weight() const { return static_cast<FontWeight>(m_weight); }
90    FontWeight lighterWeight() const;
91    FontWeight bolderWeight() const;
92    GenericFamilyType genericFamily() const { return static_cast<GenericFamilyType>(m_genericFamily); }
93    bool usePrinterFont() const { return m_usePrinterFont; }
94    // only use fixed default size when there is only one font family, and that family is "monospace"
95    bool useFixedDefaultSize() const { return genericFamily() == MonospaceFamily && !family().next() && family().family() == "-webkit-monospace"; }
96    FontRenderingMode renderingMode() const { return static_cast<FontRenderingMode>(m_renderingMode); }
97    unsigned keywordSize() const { return m_keywordSize; }
98    FontSmoothingMode fontSmoothing() const { return static_cast<FontSmoothingMode>(m_fontSmoothing); }
99    TextRenderingMode textRenderingMode() const { return static_cast<TextRenderingMode>(m_textRendering); }
100
101    FontTraitsMask traitsMask() const;
102    bool isSpecifiedFont() const { return m_isSpecifiedFont; }
103    FontOrientation orientation() const { return m_orientation; }
104    TextOrientation textOrientation() const { return m_textOrientation; }
105    FontWidthVariant widthVariant() const { return m_widthVariant; }
106
107    void setFamily(const FontFamily& family) { m_familyList = family; }
108    void setComputedSize(float s) { m_computedSize = s; }
109    void setSpecifiedSize(float s) { m_specifiedSize = s; }
110    void setItalic(bool i) { m_italic = i; }
111    void setSmallCaps(bool c) { m_smallCaps = c; }
112    void setIsAbsoluteSize(bool s) { m_isAbsoluteSize = s; }
113    void setWeight(FontWeight w) { m_weight = w; }
114    void setGenericFamily(GenericFamilyType genericFamily) { m_genericFamily = genericFamily; }
115#if PLATFORM(CHROMIUM) && OS(DARWIN)
116    void setUsePrinterFont(bool) { }
117#else
118    void setUsePrinterFont(bool p) { m_usePrinterFont = p; }
119#endif
120    void setRenderingMode(FontRenderingMode mode) { m_renderingMode = mode; }
121    void setKeywordSize(unsigned s) { m_keywordSize = s; }
122    void setFontSmoothing(FontSmoothingMode smoothing) { m_fontSmoothing = smoothing; }
123    void setTextRenderingMode(TextRenderingMode rendering) { m_textRendering = rendering; }
124    void setIsSpecifiedFont(bool isSpecifiedFont) { m_isSpecifiedFont = isSpecifiedFont; }
125    void setOrientation(FontOrientation orientation) { m_orientation = orientation; }
126    void setTextOrientation(TextOrientation textOrientation) { m_textOrientation = textOrientation; }
127    void setWidthVariant(FontWidthVariant widthVariant) { m_widthVariant = widthVariant; }
128
129private:
130    FontFamily m_familyList; // The list of font families to be used.
131
132    float m_specifiedSize;   // Specified CSS value. Independent of rendering issues such as integer
133                             // rounding, minimum font sizes, and zooming.
134    float m_computedSize;    // Computed size adjusted for the minimum font size and the zoom factor.
135
136    FontOrientation m_orientation; // Whether the font is rendering on a horizontal line or a vertical line.
137    TextOrientation m_textOrientation; // Only used by vertical text. Determines the default orientation for non-ideograph glyphs.
138
139    FontWidthVariant m_widthVariant;
140
141    bool m_italic : 1;
142    bool m_smallCaps : 1;
143    bool m_isAbsoluteSize : 1;   // Whether or not CSS specified an explicit size
144                                 // (logical sizes like "medium" don't count).
145    unsigned m_weight : 8; // FontWeight
146    unsigned m_genericFamily : 3; // GenericFamilyType
147    bool m_usePrinterFont : 1;
148
149    unsigned m_renderingMode : 1;  // Used to switch between CG and GDI text on Windows.
150
151    unsigned m_keywordSize : 4; // We cache whether or not a font is currently represented by a CSS keyword (e.g., medium).  If so,
152                           // then we can accurately translate across different generic families to adjust for different preference settings
153                           // (e.g., 13px monospace vs. 16px everything else).  Sizes are 1-8 (like the HTML size values for <font>).
154
155    unsigned m_fontSmoothing : 2; // FontSmoothingMode
156    unsigned m_textRendering : 2; // TextRenderingMode
157    bool m_isSpecifiedFont : 1; // True if a web page specifies a non-generic font family as the first font family.
158};
159
160inline bool FontDescription::operator==(const FontDescription& other) const
161{
162    return m_familyList == other.m_familyList
163        && m_specifiedSize == other.m_specifiedSize
164        && m_computedSize == other.m_computedSize
165        && m_italic == other.m_italic
166        && m_smallCaps == other.m_smallCaps
167        && m_isAbsoluteSize == other.m_isAbsoluteSize
168        && m_weight == other.m_weight
169        && m_genericFamily == other.m_genericFamily
170        && m_usePrinterFont == other.m_usePrinterFont
171        && m_renderingMode == other.m_renderingMode
172        && m_keywordSize == other.m_keywordSize
173        && m_fontSmoothing == other.m_fontSmoothing
174        && m_textRendering == other.m_textRendering
175        && m_isSpecifiedFont == other.m_isSpecifiedFont
176        && m_orientation == other.m_orientation
177        && m_textOrientation == other.m_textOrientation
178        && m_widthVariant == other.m_widthVariant;
179}
180
181}
182
183#endif
184