ChromeFont->gfx::Font...

app/gfx/chrome_font_win.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "app/gfx/chrome_font.h"
 
 #include <windows.h>
 #include <math.h>
 
 #include <algorithm>
 
 #include "app/l10n_util_win.h"
 #include "base/logging.h"
 #include "base/win_util.h"
 #include "grit/generated_resources.h"
 #include "grit/locale_settings.h"
 
+namespace gfx {
+
 /*static*/
-ChromeFont::HFontRef* ChromeFont::base_font_ref_;
+Font::HFontRef* Font::base_font_ref_;
 
 // If the tmWeight field of a TEXTMETRIC structure has a value >= this, the
 // font is bold.
 static const int kTextMetricWeightBold = 700;
 
 //
-// ChromeFont
+// Font
 //
 
-ChromeFont::ChromeFont()
+Font::Font()
     : font_ref_(GetBaseFontRef()) {
 }
 
-int ChromeFont::height() const {
+int Font::height() const {
   return font_ref_->height();
 }
 
-int ChromeFont::baseline() const {
+int Font::baseline() const {
   return font_ref_->baseline();
 }
 
-int ChromeFont::ave_char_width() const {
+int Font::ave_char_width() const {
   return font_ref_->ave_char_width();
 }
 
-int ChromeFont::GetExpectedTextWidth(int length) const {
+int Font::GetExpectedTextWidth(int length) const {
   return length * std::min(font_ref_->dlu_base_x(), ave_char_width());
 }
 
-int ChromeFont::style() const {
+int Font::style() const {
   return font_ref_->style();
 }
 
-NativeFont ChromeFont::nativeFont() const {
+NativeFont Font::nativeFont() const {
   return hfont();
 }
 
 // static
-ChromeFont ChromeFont::CreateFont(HFONT font) {
+Font Font::CreateFont(HFONT font) {
   DCHECK(font);
   LOGFONT font_info;
   GetObject(font, sizeof(LOGFONT), &font_info);
-  return ChromeFont(CreateHFontRef(CreateFontIndirect(&font_info)));
+  return Font(CreateHFontRef(CreateFontIndirect(&font_info)));
 }
 
-ChromeFont ChromeFont::CreateFont(const std::wstring& font_name,
-                                  int font_size) {
+Font Font::CreateFont(const std::wstring& font_name, int font_size) {
   HDC hdc = GetDC(NULL);
   long lf_height = -MulDiv(font_size, GetDeviceCaps(hdc, LOGPIXELSY), 72);
   ReleaseDC(NULL, hdc);
   HFONT hf = ::CreateFont(lf_height, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
                     font_name.c_str());
-  return ChromeFont::CreateFont(hf);
+  return Font::CreateFont(hf);
 }
 
 // static
-ChromeFont::HFontRef* ChromeFont::GetBaseFontRef() {
+Font::HFontRef* Font::GetBaseFontRef() {
   if (base_font_ref_ == NULL) {
     NONCLIENTMETRICS metrics;
     win_util::GetNonClientMetrics(&metrics);
 
     l10n_util::AdjustUIFont(&metrics.lfMessageFont);
 
-    // See comment in ChromeFont::DeriveFont() about font size.
+    // See comment in Font::DeriveFont() about font size.
     // TODO(jungshik): Add a per-locale resource entry for the minimum
     // font size  and actually enforce the lower-bound. 5 is way too small
     // for CJK, Thai, and Indian locales.
     DCHECK_GE(abs(metrics.lfMessageFont.lfHeight), 5);
     HFONT font = CreateFontIndirect(&metrics.lfMessageFont);
     DLOG_ASSERT(font);
-    base_font_ref_ = ChromeFont::CreateHFontRef(font);
+    base_font_ref_ = Font::CreateHFontRef(font);
     // base_font_ref_ is global, up the ref count so it's never deleted.
     base_font_ref_->AddRef();
   }
   return base_font_ref_;
 }
 
-std::wstring ChromeFont::FontName() {
+std::wstring Font::FontName() {
   LOGFONT font_info;
   GetObject(hfont(), sizeof(LOGFONT), &font_info);
   return (std::wstring(font_info.lfFaceName));
 }
 
-int ChromeFont::FontSize() {
+int Font::FontSize() {
   LOGFONT font_info;
   GetObject(hfont(), sizeof(LOGFONT), &font_info);
   long lf_height = font_info.lfHeight;
   HDC hdc = GetDC(NULL);
   int device_caps = GetDeviceCaps(hdc, LOGPIXELSY);
   int font_size = 0;
   if (device_caps != 0) {
     float font_size_float = -static_cast<float>(lf_height)*72/device_caps;
     font_size = static_cast<int>(::ceil(font_size_float - 0.5));
   }
   ReleaseDC(NULL, hdc);
   return font_size;
 }
 
-ChromeFont::HFontRef::HFontRef(HFONT hfont,
+Font::HFontRef::HFontRef(HFONT hfont,
          int height,
          int baseline,
          int ave_char_width,
          int style,
          int dlu_base_x)
     : hfont_(hfont),
       height_(height),
       baseline_(baseline),
       ave_char_width_(ave_char_width),
       style_(style),
       dlu_base_x_(dlu_base_x) {
   DLOG_ASSERT(hfont);
 }
 
-ChromeFont::HFontRef::~HFontRef() {
+Font::HFontRef::~HFontRef() {
   DeleteObject(hfont_);
 }
 
 
-ChromeFont ChromeFont::DeriveFont(int size_delta, int style) const {
+Font Font::DeriveFont(int size_delta, int style) const {
   LOGFONT font_info;
   GetObject(hfont(), sizeof(LOGFONT), &font_info);
   // LOGFONT returns two types of font heights, negative is measured slightly
   // differently (character height, vs cell height).
   if (font_info.lfHeight < 0) {
     font_info.lfHeight -= size_delta;
   } else {
     font_info.lfHeight += size_delta;
   }
   // Even with "Small Fonts", the smallest readable font size is 5. It is easy
   // to create a non-drawing font and forget about the fact that text should be
   // drawn in the UI. This test ensures that the font will be readable.
   DCHECK_GE(abs(font_info.lfHeight), 5);
   font_info.lfUnderline = ((style & UNDERLINED) == UNDERLINED);
   font_info.lfItalic = ((style & ITALIC) == ITALIC);
   font_info.lfWeight = (style & BOLD) ? FW_BOLD : FW_NORMAL;
 
   HFONT hfont = CreateFontIndirect(&font_info);
-  return ChromeFont(CreateHFontRef(hfont));
+  return Font(CreateHFontRef(hfont));
 }
 
-int ChromeFont::GetStringWidth(const std::wstring& text) const {
+int Font::GetStringWidth(const std::wstring& text) const {
   int width = 0;
   HDC dc = GetDC(NULL);
   HFONT previous_font = static_cast<HFONT>(SelectObject(dc, hfont()));
   SIZE size;
   if (GetTextExtentPoint32(dc, text.c_str(), static_cast<int>(text.size()),
                            &size)) {
     width = size.cx;
   } else {
     width = 0;
   }
   SelectObject(dc, previous_font);
   ReleaseDC(NULL, dc);
   return width;
 }
 
-ChromeFont::HFontRef* ChromeFont::CreateHFontRef(HFONT font) {
+Font::HFontRef* Font::CreateHFontRef(HFONT font) {
   TEXTMETRIC font_metrics;
   HDC screen_dc = GetDC(NULL);
   HFONT previous_font = static_cast<HFONT>(SelectObject(screen_dc, font));
   int last_map_mode = SetMapMode(screen_dc, MM_TEXT);
   GetTextMetrics(screen_dc, &font_metrics);
   // Yes, this is how Microsoft recommends calculating the dialog unit
   // conversions.
   SIZE ave_text_size;
   GetTextExtentPoint32(screen_dc,
                        L"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz",
                        52, &ave_text_size);
   const int dlu_base_x = (ave_text_size.cx / 26 + 1) / 2;
   // To avoid the DC referencing font_handle_, select the previous font.
   SelectObject(screen_dc, previous_font);
   SetMapMode(screen_dc, last_map_mode);
   ReleaseDC(NULL, screen_dc);
 
   const int height = std::max(1, static_cast<int>(font_metrics.tmHeight));
   const int baseline = std::max(1, static_cast<int>(font_metrics.tmAscent));
   const int ave_char_width =
       std::max(1, static_cast<int>(font_metrics.tmAveCharWidth));
   int style = 0;
   if (font_metrics.tmItalic) {
-    style |= ChromeFont::ITALIC;
+    style |= Font::ITALIC;
   }
   if (font_metrics.tmUnderlined) {
-    style |= ChromeFont::UNDERLINED;
+    style |= Font::UNDERLINED;
   }
   if (font_metrics.tmWeight >= kTextMetricWeightBold) {
-    style |= ChromeFont::BOLD;
+    style |= Font::BOLD;
   }
 
   return new HFontRef(font, height, baseline, ave_char_width, style,
                       dlu_base_x);
 }
+
+}  // namespace gfx