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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "ui/gfx/platform_font_win.h" | 5 #include "ui/gfx/platform_font_win.h" |
6 | 6 |
7 #include <windows.h> | 7 #include <windows.h> |
8 #include <math.h> | 8 #include <math.h> |
9 | 9 |
10 #include <algorithm> | 10 #include <algorithm> |
11 #include <string> | 11 #include <string> |
12 | 12 |
13 #include "base/logging.h" | 13 #include "base/logging.h" |
14 #include "base/strings/string_util.h" | 14 #include "base/strings/string_util.h" |
15 #include "base/strings/sys_string_conversions.h" | 15 #include "base/strings/sys_string_conversions.h" |
16 #include "base/strings/utf_string_conversions.h" | 16 #include "base/strings/utf_string_conversions.h" |
17 #include "base/win/scoped_gdi_object.h" | |
17 #include "base/win/scoped_hdc.h" | 18 #include "base/win/scoped_hdc.h" |
18 #include "base/win/scoped_select_object.h" | 19 #include "base/win/scoped_select_object.h" |
19 #include "base/win/win_util.h" | 20 #include "base/win/win_util.h" |
20 #include "ui/gfx/canvas.h" | 21 #include "ui/gfx/canvas.h" |
21 #include "ui/gfx/font.h" | 22 #include "ui/gfx/font.h" |
22 #include "ui/gfx/win/scoped_set_map_mode.h" | 23 #include "ui/gfx/win/scoped_set_map_mode.h" |
23 | 24 |
24 namespace { | 25 namespace { |
25 | 26 |
26 // If the tmWeight field of a TEXTMETRIC structure has a value >= this, the | 27 // If the tmWeight field of a TEXTMETRIC structure has a value >= this, the |
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109 } | 110 } |
110 return font; | 111 return font; |
111 } | 112 } |
112 | 113 |
113 LOGFONT font_info; | 114 LOGFONT font_info; |
114 GetObject(GetNativeFont(), sizeof(LOGFONT), &font_info); | 115 GetObject(GetNativeFont(), sizeof(LOGFONT), &font_info); |
115 font_info.lfHeight = height; | 116 font_info.lfHeight = height; |
116 SetLogFontStyle(style, &font_info); | 117 SetLogFontStyle(style, &font_info); |
117 | 118 |
118 HFONT hfont = CreateFontIndirect(&font_info); | 119 HFONT hfont = CreateFontIndirect(&font_info); |
119 return Font(new PlatformFontWin(CreateHFontRef(hfont))); | 120 return DeriveWithCorrectedSize(hfont); |
120 } | 121 } |
121 | 122 |
122 //////////////////////////////////////////////////////////////////////////////// | 123 //////////////////////////////////////////////////////////////////////////////// |
123 // PlatformFontWin, PlatformFont implementation: | 124 // PlatformFontWin, PlatformFont implementation: |
124 | 125 |
125 Font PlatformFontWin::DeriveFont(int size_delta, int style) const { | 126 Font PlatformFontWin::DeriveFont(int size_delta, int style) const { |
126 LOGFONT font_info; | 127 LOGFONT font_info; |
127 GetObject(GetNativeFont(), sizeof(LOGFONT), &font_info); | 128 GetObject(GetNativeFont(), sizeof(LOGFONT), &font_info); |
128 const int requested_font_size = font_ref_->requested_font_size(); | 129 const int requested_font_size = font_ref_->requested_font_size(); |
129 font_info.lfHeight = AdjustFontSize(-requested_font_size, size_delta); | 130 font_info.lfHeight = AdjustFontSize(-requested_font_size, size_delta); |
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228 PlatformFontWin::HFontRef* PlatformFontWin::CreateHFontRef(HFONT font) { | 229 PlatformFontWin::HFontRef* PlatformFontWin::CreateHFontRef(HFONT font) { |
229 TEXTMETRIC font_metrics; | 230 TEXTMETRIC font_metrics; |
230 | 231 |
231 { | 232 { |
232 base::win::ScopedGetDC screen_dc(NULL); | 233 base::win::ScopedGetDC screen_dc(NULL); |
233 base::win::ScopedSelectObject scoped_font(screen_dc, font); | 234 base::win::ScopedSelectObject scoped_font(screen_dc, font); |
234 gfx::ScopedSetMapMode mode(screen_dc, MM_TEXT); | 235 gfx::ScopedSetMapMode mode(screen_dc, MM_TEXT); |
235 GetTextMetrics(screen_dc, &font_metrics); | 236 GetTextMetrics(screen_dc, &font_metrics); |
236 } | 237 } |
237 | 238 |
239 return CreateHFontRef(font, font_metrics); | |
240 } | |
241 | |
242 PlatformFontWin::HFontRef* PlatformFontWin::CreateHFontRef( | |
243 HFONT font, | |
244 const TEXTMETRIC& font_metrics) { | |
238 const int height = std::max<int>(1, font_metrics.tmHeight); | 245 const int height = std::max<int>(1, font_metrics.tmHeight); |
239 const int baseline = std::max<int>(1, font_metrics.tmAscent); | 246 const int baseline = std::max<int>(1, font_metrics.tmAscent); |
240 const int cap_height = | 247 const int cap_height = |
241 std::max<int>(1, font_metrics.tmAscent - font_metrics.tmInternalLeading); | 248 std::max<int>(1, font_metrics.tmAscent - font_metrics.tmInternalLeading); |
242 const int ave_char_width = std::max<int>(1, font_metrics.tmAveCharWidth); | 249 const int ave_char_width = std::max<int>(1, font_metrics.tmAveCharWidth); |
243 const int font_size = | 250 const int font_size = |
244 std::max<int>(1, font_metrics.tmHeight - font_metrics.tmInternalLeading); | 251 std::max<int>(1, font_metrics.tmHeight - font_metrics.tmInternalLeading); |
245 int style = 0; | 252 int style = 0; |
246 if (font_metrics.tmItalic) | 253 if (font_metrics.tmItalic) |
247 style |= Font::ITALIC; | 254 style |= Font::ITALIC; |
248 if (font_metrics.tmUnderlined) | 255 if (font_metrics.tmUnderlined) |
249 style |= Font::UNDERLINE; | 256 style |= Font::UNDERLINE; |
250 if (font_metrics.tmWeight >= kTextMetricWeightBold) | 257 if (font_metrics.tmWeight >= kTextMetricWeightBold) |
251 style |= Font::BOLD; | 258 style |= Font::BOLD; |
252 | 259 |
253 return new HFontRef(font, font_size, height, baseline, cap_height, | 260 return new HFontRef(font, font_size, height, baseline, cap_height, |
254 ave_char_width, style); | 261 ave_char_width, style); |
255 } | 262 } |
256 | 263 |
264 Font PlatformFontWin::DeriveWithCorrectedSize(HFONT base_font) { | |
Alexei Svitkine (slow)
2014/06/02 15:42:55
Make this a free-standing function in the anon nam
Tomasz Moniuszko
2014/06/11 13:11:56
This method calls PlatformFontWin::CreateHFontRef
| |
265 base::win::ScopedGetDC screen_dc(NULL); | |
266 gfx::ScopedSetMapMode mode(screen_dc, MM_TEXT); | |
267 | |
268 base::win::ScopedGDIObject<HFONT> best_font(base_font); | |
269 TEXTMETRIC best_font_metrics; | |
270 { | |
271 base::win::ScopedSelectObject scoped_font(screen_dc, best_font); | |
272 GetTextMetrics(screen_dc, &best_font_metrics); | |
Alexei Svitkine (slow)
2014/06/02 15:42:55
Nit: Make a helper function in the anon namespace
Tomasz Moniuszko
2014/06/11 13:11:55
Done.
| |
273 } | |
274 | |
275 LOGFONT font_info; | |
276 GetObject(base_font, sizeof(LOGFONT), &font_info); | |
277 | |
278 do { | |
279 font_info.lfHeight = | |
280 -(best_font_metrics.tmHeight - best_font_metrics.tmInternalLeading + 1); | |
Alexei Svitkine (slow)
2014/06/02 15:42:55
Nit: Add a comment explaining this logic.
Tomasz Moniuszko
2014/06/11 13:11:55
Done.
| |
281 base::win::ScopedGDIObject<HFONT> font(CreateFontIndirect(&font_info)); | |
282 TEXTMETRIC font_metrics; | |
283 { | |
284 base::win::ScopedSelectObject scoped_font(screen_dc, font); | |
285 GetTextMetrics(screen_dc, &font_metrics); | |
286 } | |
287 if (font_metrics.tmHeight > best_font_metrics.tmHeight) { | |
Alexei Svitkine (slow)
2014/06/02 15:42:55
Nit: No {}'s.
Tomasz Moniuszko
2014/06/11 13:11:56
Done.
| |
288 break; | |
289 } | |
290 best_font.Set(font.release()); | |
291 best_font_metrics = font_metrics; | |
292 } while (true); | |
293 | |
294 return Font(new PlatformFontWin( | |
295 CreateHFontRef(best_font.release()))); | |
Alexei Svitkine (slow)
2014/06/02 15:42:55
Nit: Does this fit on the previous line?
Tomasz Moniuszko
2014/06/11 13:11:56
Done.
| |
296 } | |
297 | |
257 PlatformFontWin::PlatformFontWin(HFontRef* hfont_ref) : font_ref_(hfont_ref) { | 298 PlatformFontWin::PlatformFontWin(HFontRef* hfont_ref) : font_ref_(hfont_ref) { |
258 } | 299 } |
259 | 300 |
260 //////////////////////////////////////////////////////////////////////////////// | 301 //////////////////////////////////////////////////////////////////////////////// |
261 // PlatformFontWin::HFontRef: | 302 // PlatformFontWin::HFontRef: |
262 | 303 |
263 PlatformFontWin::HFontRef::HFontRef(HFONT hfont, | 304 PlatformFontWin::HFontRef::HFontRef(HFONT hfont, |
264 int font_size, | 305 int font_size, |
265 int height, | 306 int height, |
266 int baseline, | 307 int baseline, |
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322 return new PlatformFontWin(native_font); | 363 return new PlatformFontWin(native_font); |
323 } | 364 } |
324 | 365 |
325 // static | 366 // static |
326 PlatformFont* PlatformFont::CreateFromNameAndSize(const std::string& font_name, | 367 PlatformFont* PlatformFont::CreateFromNameAndSize(const std::string& font_name, |
327 int font_size) { | 368 int font_size) { |
328 return new PlatformFontWin(font_name, font_size); | 369 return new PlatformFontWin(font_name, font_size); |
329 } | 370 } |
330 | 371 |
331 } // namespace gfx | 372 } // namespace gfx |
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