1 | /* |
2 | * Copyright (C) 2003, 2006, 2017 Apple 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 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 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 | #pragma once |
27 | |
28 | namespace WebCore { |
29 | |
30 | enum class TextRenderingMode : uint8_t { |
31 | AutoTextRendering, |
32 | OptimizeSpeed, |
33 | OptimizeLegibility, |
34 | GeometricPrecision |
35 | }; |
36 | |
37 | enum class FontSmoothingMode : uint8_t { |
38 | AutoSmoothing, |
39 | NoSmoothing, |
40 | Antialiased, |
41 | SubpixelAntialiased |
42 | }; |
43 | |
44 | // This setting is used to provide ways of switching between multiple rendering modes that may have different |
45 | // metrics. It is used to switch between CG and GDI text on Windows. |
46 | enum class FontRenderingMode : uint8_t { |
47 | Normal, |
48 | Alternate |
49 | }; |
50 | |
51 | enum class FontOrientation : uint8_t { |
52 | Horizontal, |
53 | Vertical |
54 | }; |
55 | |
56 | enum class NonCJKGlyphOrientation : uint8_t { |
57 | Mixed, |
58 | Upright |
59 | }; |
60 | |
61 | // Here, "Leading" and "Trailing" are relevant after the line has been rearranged for bidi. |
62 | // ("Leading" means "left" and "Trailing" means "right.") |
63 | enum ExpansionBehaviorFlags { |
64 | ForbidTrailingExpansion = 0 << 0, |
65 | AllowTrailingExpansion = 1 << 0, |
66 | ForceTrailingExpansion = 2 << 0, |
67 | TrailingExpansionMask = 3 << 0, |
68 | |
69 | ForbidLeadingExpansion = 0 << 2, |
70 | AllowLeadingExpansion = 1 << 2, |
71 | ForceLeadingExpansion = 2 << 2, |
72 | LeadingExpansionMask = 3 << 2, |
73 | |
74 | DefaultExpansion = AllowTrailingExpansion | ForbidLeadingExpansion, |
75 | }; |
76 | typedef unsigned ExpansionBehavior; |
77 | |
78 | enum FontSynthesisValues { |
79 | FontSynthesisNone = 0x0, |
80 | FontSynthesisWeight = 0x1, |
81 | FontSynthesisStyle = 0x2, |
82 | FontSynthesisSmallCaps = 0x4 |
83 | }; |
84 | typedef unsigned FontSynthesis; |
85 | const unsigned FontSynthesisWidth = 3; |
86 | |
87 | enum class FontVariantLigatures : uint8_t { |
88 | Normal, |
89 | Yes, |
90 | No |
91 | }; |
92 | |
93 | enum class FontVariantPosition : uint8_t { |
94 | Normal, |
95 | Subscript, |
96 | Superscript |
97 | }; |
98 | |
99 | enum class FontVariantCaps : uint8_t { |
100 | Normal, |
101 | Small, |
102 | AllSmall, |
103 | Petite, |
104 | AllPetite, |
105 | Unicase, |
106 | Titling |
107 | }; |
108 | |
109 | enum class FontVariantNumericFigure : uint8_t { |
110 | Normal, |
111 | LiningNumbers, |
112 | OldStyleNumbers |
113 | }; |
114 | |
115 | enum class FontVariantNumericSpacing : uint8_t { |
116 | Normal, |
117 | ProportionalNumbers, |
118 | TabularNumbers |
119 | }; |
120 | |
121 | enum class FontVariantNumericFraction : uint8_t { |
122 | Normal, |
123 | DiagonalFractions, |
124 | StackedFractions |
125 | }; |
126 | |
127 | enum class FontVariantNumericOrdinal : uint8_t { |
128 | Normal, |
129 | Yes |
130 | }; |
131 | |
132 | enum class FontVariantNumericSlashedZero : uint8_t { |
133 | Normal, |
134 | Yes |
135 | }; |
136 | |
137 | enum class FontVariantAlternates : uint8_t { |
138 | Normal, |
139 | HistoricalForms |
140 | }; |
141 | |
142 | enum class FontVariantEastAsianVariant : uint8_t { |
143 | Normal, |
144 | Jis78, |
145 | Jis83, |
146 | Jis90, |
147 | Jis04, |
148 | Simplified, |
149 | Traditional |
150 | }; |
151 | |
152 | enum class FontVariantEastAsianWidth : uint8_t { |
153 | Normal, |
154 | Full, |
155 | Proportional |
156 | }; |
157 | |
158 | enum class FontVariantEastAsianRuby : uint8_t { |
159 | Normal, |
160 | Yes |
161 | }; |
162 | |
163 | struct FontVariantSettings { |
164 | FontVariantSettings() |
165 | : commonLigatures(FontVariantLigatures::Normal) |
166 | , discretionaryLigatures(FontVariantLigatures::Normal) |
167 | , historicalLigatures(FontVariantLigatures::Normal) |
168 | , contextualAlternates(FontVariantLigatures::Normal) |
169 | , position(FontVariantPosition::Normal) |
170 | , caps(FontVariantCaps::Normal) |
171 | , numericFigure(FontVariantNumericFigure::Normal) |
172 | , numericSpacing(FontVariantNumericSpacing::Normal) |
173 | , numericFraction(FontVariantNumericFraction::Normal) |
174 | , numericOrdinal(FontVariantNumericOrdinal::Normal) |
175 | , numericSlashedZero(FontVariantNumericSlashedZero::Normal) |
176 | , alternates(FontVariantAlternates::Normal) |
177 | , eastAsianVariant(FontVariantEastAsianVariant::Normal) |
178 | , eastAsianWidth(FontVariantEastAsianWidth::Normal) |
179 | , eastAsianRuby(FontVariantEastAsianRuby::Normal) |
180 | { |
181 | } |
182 | |
183 | FontVariantSettings( |
184 | FontVariantLigatures commonLigatures, |
185 | FontVariantLigatures discretionaryLigatures, |
186 | FontVariantLigatures historicalLigatures, |
187 | FontVariantLigatures contextualAlternates, |
188 | FontVariantPosition position, |
189 | FontVariantCaps caps, |
190 | FontVariantNumericFigure numericFigure, |
191 | FontVariantNumericSpacing numericSpacing, |
192 | FontVariantNumericFraction numericFraction, |
193 | FontVariantNumericOrdinal numericOrdinal, |
194 | FontVariantNumericSlashedZero numericSlashedZero, |
195 | FontVariantAlternates alternates, |
196 | FontVariantEastAsianVariant eastAsianVariant, |
197 | FontVariantEastAsianWidth eastAsianWidth, |
198 | FontVariantEastAsianRuby eastAsianRuby) |
199 | : commonLigatures(commonLigatures) |
200 | , discretionaryLigatures(discretionaryLigatures) |
201 | , historicalLigatures(historicalLigatures) |
202 | , contextualAlternates(contextualAlternates) |
203 | , position(position) |
204 | , caps(caps) |
205 | , numericFigure(numericFigure) |
206 | , numericSpacing(numericSpacing) |
207 | , numericFraction(numericFraction) |
208 | , numericOrdinal(numericOrdinal) |
209 | , numericSlashedZero(numericSlashedZero) |
210 | , alternates(alternates) |
211 | , eastAsianVariant(eastAsianVariant) |
212 | , eastAsianWidth(eastAsianWidth) |
213 | , eastAsianRuby(eastAsianRuby) |
214 | { |
215 | } |
216 | |
217 | bool isAllNormal() const |
218 | { |
219 | return commonLigatures == FontVariantLigatures::Normal |
220 | && discretionaryLigatures == FontVariantLigatures::Normal |
221 | && historicalLigatures == FontVariantLigatures::Normal |
222 | && contextualAlternates == FontVariantLigatures::Normal |
223 | && position == FontVariantPosition::Normal |
224 | && caps == FontVariantCaps::Normal |
225 | && numericFigure == FontVariantNumericFigure::Normal |
226 | && numericSpacing == FontVariantNumericSpacing::Normal |
227 | && numericFraction == FontVariantNumericFraction::Normal |
228 | && numericOrdinal == FontVariantNumericOrdinal::Normal |
229 | && numericSlashedZero == FontVariantNumericSlashedZero::Normal |
230 | && alternates == FontVariantAlternates::Normal |
231 | && eastAsianVariant == FontVariantEastAsianVariant::Normal |
232 | && eastAsianWidth == FontVariantEastAsianWidth::Normal |
233 | && eastAsianRuby == FontVariantEastAsianRuby::Normal; |
234 | } |
235 | |
236 | bool operator==(const FontVariantSettings& other) const |
237 | { |
238 | return commonLigatures == other.commonLigatures |
239 | && discretionaryLigatures == other.discretionaryLigatures |
240 | && historicalLigatures == other.historicalLigatures |
241 | && contextualAlternates == other.contextualAlternates |
242 | && position == other.position |
243 | && caps == other.caps |
244 | && numericFigure == other.numericFigure |
245 | && numericSpacing == other.numericSpacing |
246 | && numericFraction == other.numericFraction |
247 | && numericOrdinal == other.numericOrdinal |
248 | && numericSlashedZero == other.numericSlashedZero |
249 | && alternates == other.alternates |
250 | && eastAsianVariant == other.eastAsianVariant |
251 | && eastAsianWidth == other.eastAsianWidth |
252 | && eastAsianRuby == other.eastAsianRuby; |
253 | } |
254 | |
255 | bool operator!=(const FontVariantSettings& other) const { return !(*this == other); } |
256 | |
257 | unsigned uniqueValue() const |
258 | { |
259 | return static_cast<unsigned>(commonLigatures) << 26 |
260 | | static_cast<unsigned>(discretionaryLigatures) << 24 |
261 | | static_cast<unsigned>(historicalLigatures) << 22 |
262 | | static_cast<unsigned>(contextualAlternates) << 20 |
263 | | static_cast<unsigned>(position) << 18 |
264 | | static_cast<unsigned>(caps) << 15 |
265 | | static_cast<unsigned>(numericFigure) << 13 |
266 | | static_cast<unsigned>(numericSpacing) << 11 |
267 | | static_cast<unsigned>(numericFraction) << 9 |
268 | | static_cast<unsigned>(numericOrdinal) << 8 |
269 | | static_cast<unsigned>(numericSlashedZero) << 7 |
270 | | static_cast<unsigned>(alternates) << 6 |
271 | | static_cast<unsigned>(eastAsianVariant) << 3 |
272 | | static_cast<unsigned>(eastAsianWidth) << 1 |
273 | | static_cast<unsigned>(eastAsianRuby) << 0; |
274 | } |
275 | |
276 | // FIXME: this would be much more compact with bitfields. |
277 | FontVariantLigatures commonLigatures; |
278 | FontVariantLigatures discretionaryLigatures; |
279 | FontVariantLigatures historicalLigatures; |
280 | FontVariantLigatures contextualAlternates; |
281 | FontVariantPosition position; |
282 | FontVariantCaps caps; |
283 | FontVariantNumericFigure numericFigure; |
284 | FontVariantNumericSpacing numericSpacing; |
285 | FontVariantNumericFraction numericFraction; |
286 | FontVariantNumericOrdinal numericOrdinal; |
287 | FontVariantNumericSlashedZero numericSlashedZero; |
288 | FontVariantAlternates alternates; |
289 | FontVariantEastAsianVariant eastAsianVariant; |
290 | FontVariantEastAsianWidth eastAsianWidth; |
291 | FontVariantEastAsianRuby eastAsianRuby; |
292 | }; |
293 | |
294 | struct FontVariantLigaturesValues { |
295 | FontVariantLigaturesValues( |
296 | FontVariantLigatures commonLigatures, |
297 | FontVariantLigatures discretionaryLigatures, |
298 | FontVariantLigatures historicalLigatures, |
299 | FontVariantLigatures contextualAlternates) |
300 | : commonLigatures(commonLigatures) |
301 | , discretionaryLigatures(discretionaryLigatures) |
302 | , historicalLigatures(historicalLigatures) |
303 | , contextualAlternates(contextualAlternates) |
304 | { |
305 | } |
306 | |
307 | FontVariantLigatures commonLigatures; |
308 | FontVariantLigatures discretionaryLigatures; |
309 | FontVariantLigatures historicalLigatures; |
310 | FontVariantLigatures contextualAlternates; |
311 | }; |
312 | |
313 | struct FontVariantNumericValues { |
314 | FontVariantNumericValues( |
315 | FontVariantNumericFigure figure, |
316 | FontVariantNumericSpacing spacing, |
317 | FontVariantNumericFraction fraction, |
318 | FontVariantNumericOrdinal ordinal, |
319 | FontVariantNumericSlashedZero slashedZero) |
320 | : figure(figure) |
321 | , spacing(spacing) |
322 | , fraction(fraction) |
323 | , ordinal(ordinal) |
324 | , slashedZero(slashedZero) |
325 | { |
326 | } |
327 | |
328 | FontVariantNumericFigure figure; |
329 | FontVariantNumericSpacing spacing; |
330 | FontVariantNumericFraction fraction; |
331 | FontVariantNumericOrdinal ordinal; |
332 | FontVariantNumericSlashedZero slashedZero; |
333 | }; |
334 | |
335 | struct FontVariantEastAsianValues { |
336 | FontVariantEastAsianValues( |
337 | FontVariantEastAsianVariant variant, |
338 | FontVariantEastAsianWidth width, |
339 | FontVariantEastAsianRuby ruby) |
340 | : variant(variant) |
341 | , width(width) |
342 | , ruby(ruby) |
343 | { |
344 | } |
345 | |
346 | FontVariantEastAsianVariant variant; |
347 | FontVariantEastAsianWidth width; |
348 | FontVariantEastAsianRuby ruby; |
349 | }; |
350 | |
351 | enum class FontWidthVariant : uint8_t { |
352 | RegularWidth, |
353 | HalfWidth, |
354 | ThirdWidth, |
355 | QuarterWidth, |
356 | LastFontWidthVariant = QuarterWidth |
357 | }; |
358 | |
359 | const unsigned FontWidthVariantWidth = 2; |
360 | |
361 | COMPILE_ASSERT(!(static_cast<unsigned>(FontWidthVariant::LastFontWidthVariant) >> FontWidthVariantWidth), FontWidthVariantWidth_is_correct); |
362 | |
363 | enum class FontSmallCaps : uint8_t { |
364 | Off = 0, |
365 | On = 1 |
366 | }; |
367 | |
368 | enum class Kerning : uint8_t { |
369 | Auto, |
370 | Normal, |
371 | NoShift |
372 | }; |
373 | |
374 | enum class FontOpticalSizing : uint8_t { |
375 | Enabled, |
376 | Disabled |
377 | }; |
378 | |
379 | // https://www.microsoft.com/typography/otspec/fvar.htm#VAT |
380 | enum class FontStyleAxis : uint8_t { |
381 | slnt, |
382 | ital |
383 | }; |
384 | |
385 | enum class AllowUserInstalledFonts : uint8_t { |
386 | No, |
387 | Yes |
388 | }; |
389 | |
390 | } |
391 | |