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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_hdc.h" | 17 #include "base/win/scoped_hdc.h" |
| 18 #include "base/win/scoped_select_object.h" | 18 #include "base/win/scoped_select_object.h" |
| 19 #include "base/win/win_util.h" | 19 #include "base/win/win_util.h" |
| 20 #include "ui/base/win/scoped_set_map_mode.h" | |
| 21 #include "ui/gfx/canvas.h" | 20 #include "ui/gfx/canvas.h" |
| 22 #include "ui/gfx/font.h" | 21 #include "ui/gfx/font.h" |
| 22 #include "ui/gfx/win/scoped_set_map_mode.h" |
| 23 | 23 |
| 24 namespace { | 24 namespace { |
| 25 | 25 |
| 26 // If the tmWeight field of a TEXTMETRIC structure has a value >= this, the | 26 // If the tmWeight field of a TEXTMETRIC structure has a value >= this, the |
| 27 // font is bold. | 27 // font is bold. |
| 28 const int kTextMetricWeightBold = 700; | 28 const int kTextMetricWeightBold = 700; |
| 29 | 29 |
| 30 // Returns the minimum font size, using the minimum size callback, if set. | 30 // Returns the minimum font size, using the minimum size callback, if set. |
| 31 int GetMinimumFontSize() { | 31 int GetMinimumFontSize() { |
| 32 int min_font_size = 0; | 32 int min_font_size = 0; |
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| 222 } | 222 } |
| 223 return base_font_ref_; | 223 return base_font_ref_; |
| 224 } | 224 } |
| 225 | 225 |
| 226 PlatformFontWin::HFontRef* PlatformFontWin::CreateHFontRef(HFONT font) { | 226 PlatformFontWin::HFontRef* PlatformFontWin::CreateHFontRef(HFONT font) { |
| 227 TEXTMETRIC font_metrics; | 227 TEXTMETRIC font_metrics; |
| 228 | 228 |
| 229 { | 229 { |
| 230 base::win::ScopedGetDC screen_dc(NULL); | 230 base::win::ScopedGetDC screen_dc(NULL); |
| 231 base::win::ScopedSelectObject scoped_font(screen_dc, font); | 231 base::win::ScopedSelectObject scoped_font(screen_dc, font); |
| 232 ui::ScopedSetMapMode mode(screen_dc, MM_TEXT); | 232 gfx::ScopedSetMapMode mode(screen_dc, MM_TEXT); |
| 233 GetTextMetrics(screen_dc, &font_metrics); | 233 GetTextMetrics(screen_dc, &font_metrics); |
| 234 } | 234 } |
| 235 | 235 |
| 236 const int height = std::max<int>(1, font_metrics.tmHeight); | 236 const int height = std::max<int>(1, font_metrics.tmHeight); |
| 237 const int baseline = std::max<int>(1, font_metrics.tmAscent); | 237 const int baseline = std::max<int>(1, font_metrics.tmAscent); |
| 238 const int ave_char_width = std::max<int>(1, font_metrics.tmAveCharWidth); | 238 const int ave_char_width = std::max<int>(1, font_metrics.tmAveCharWidth); |
| 239 const int font_size = | 239 const int font_size = |
| 240 std::max<int>(1, font_metrics.tmHeight - font_metrics.tmInternalLeading); | 240 std::max<int>(1, font_metrics.tmHeight - font_metrics.tmInternalLeading); |
| 241 int style = 0; | 241 int style = 0; |
| 242 if (font_metrics.tmItalic) | 242 if (font_metrics.tmItalic) |
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| 277 if (font_info.lfHeight < 0) | 277 if (font_info.lfHeight < 0) |
| 278 requested_font_size_ = -font_info.lfHeight; | 278 requested_font_size_ = -font_info.lfHeight; |
| 279 } | 279 } |
| 280 | 280 |
| 281 int PlatformFontWin::HFontRef::GetDluBaseX() { | 281 int PlatformFontWin::HFontRef::GetDluBaseX() { |
| 282 if (dlu_base_x_ != -1) | 282 if (dlu_base_x_ != -1) |
| 283 return dlu_base_x_; | 283 return dlu_base_x_; |
| 284 | 284 |
| 285 base::win::ScopedGetDC screen_dc(NULL); | 285 base::win::ScopedGetDC screen_dc(NULL); |
| 286 base::win::ScopedSelectObject font(screen_dc, hfont_); | 286 base::win::ScopedSelectObject font(screen_dc, hfont_); |
| 287 ui::ScopedSetMapMode mode(screen_dc, MM_TEXT); | 287 gfx::ScopedSetMapMode mode(screen_dc, MM_TEXT); |
| 288 | 288 |
| 289 // Yes, this is how Microsoft recommends calculating the dialog unit | 289 // Yes, this is how Microsoft recommends calculating the dialog unit |
| 290 // conversions. See: http://support.microsoft.com/kb/125681 | 290 // conversions. See: http://support.microsoft.com/kb/125681 |
| 291 SIZE ave_text_size; | 291 SIZE ave_text_size; |
| 292 GetTextExtentPoint32(screen_dc, | 292 GetTextExtentPoint32(screen_dc, |
| 293 L"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz", | 293 L"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz", |
| 294 52, &ave_text_size); | 294 52, &ave_text_size); |
| 295 dlu_base_x_ = (ave_text_size.cx / 26 + 1) / 2; | 295 dlu_base_x_ = (ave_text_size.cx / 26 + 1) / 2; |
| 296 | 296 |
| 297 DCHECK_NE(dlu_base_x_, -1); | 297 DCHECK_NE(dlu_base_x_, -1); |
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| 315 return new PlatformFontWin(native_font); | 315 return new PlatformFontWin(native_font); |
| 316 } | 316 } |
| 317 | 317 |
| 318 // static | 318 // static |
| 319 PlatformFont* PlatformFont::CreateFromNameAndSize(const std::string& font_name, | 319 PlatformFont* PlatformFont::CreateFromNameAndSize(const std::string& font_name, |
| 320 int font_size) { | 320 int font_size) { |
| 321 return new PlatformFontWin(font_name, font_size); | 321 return new PlatformFontWin(font_name, font_size); |
| 322 } | 322 } |
| 323 | 323 |
| 324 } // namespace gfx | 324 } // namespace gfx |
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