| // Copyright (c) 2012 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 "ui/gfx/font_list.h" |
| |
| #include "base/lazy_instance.h" |
| #include "base/strings/string_util.h" |
| #include "ui/gfx/font_list_impl.h" |
| |
| namespace { |
| |
| // Font description of the default font set. |
| base::LazyInstance<std::string>::Leaky g_default_font_description = |
| LAZY_INSTANCE_INITIALIZER; |
| |
| // The default instance of gfx::FontListImpl. |
| base::LazyInstance<scoped_refptr<gfx::FontListImpl> >::Leaky g_default_impl = |
| LAZY_INSTANCE_INITIALIZER; |
| bool g_default_impl_initialized = false; |
| |
| } // namespace |
| |
| namespace gfx { |
| |
| FontList::FontList() : impl_(GetDefaultImpl()) {} |
| |
| FontList::FontList(const FontList& other) : impl_(other.impl_) {} |
| |
| FontList::FontList(const std::string& font_description_string) |
| : impl_(new FontListImpl(font_description_string)) {} |
| |
| FontList::FontList(const std::vector<std::string>& font_names, |
| int font_style, |
| int font_size) |
| : impl_(new FontListImpl(font_names, font_style, font_size)) {} |
| |
| FontList::FontList(const std::vector<Font>& fonts) |
| : impl_(new FontListImpl(fonts)) {} |
| |
| FontList::FontList(const Font& font) : impl_(new FontListImpl(font)) {} |
| |
| FontList::~FontList() {} |
| |
| FontList& FontList::operator=(const FontList& other) { |
| impl_ = other.impl_; |
| return *this; |
| } |
| |
| // static |
| void FontList::SetDefaultFontDescription(const std::string& font_description) { |
| // The description string must end with "px" for size in pixel, or must be |
| // the empty string, which specifies to use a single default font. |
| DCHECK(font_description.empty() || |
| EndsWith(font_description, "px", true)); |
| |
| g_default_font_description.Get() = font_description; |
| g_default_impl_initialized = false; |
| } |
| |
| FontList FontList::Derive(int size_delta, int font_style) const { |
| return FontList(impl_->Derive(size_delta, font_style)); |
| } |
| |
| FontList FontList::DeriveWithSizeDelta(int size_delta) const { |
| return Derive(size_delta, GetFontStyle()); |
| } |
| |
| FontList FontList::DeriveWithStyle(int font_style) const { |
| return Derive(0, font_style); |
| } |
| |
| int FontList::GetHeight() const { |
| return impl_->GetHeight(); |
| } |
| |
| int FontList::GetBaseline() const { |
| return impl_->GetBaseline(); |
| } |
| |
| int FontList::GetCapHeight() const { |
| return impl_->GetCapHeight(); |
| } |
| |
| int FontList::GetExpectedTextWidth(int length) const { |
| return impl_->GetExpectedTextWidth(length); |
| } |
| |
| int FontList::GetFontStyle() const { |
| return impl_->GetFontStyle(); |
| } |
| |
| const std::string& FontList::GetFontDescriptionString() const { |
| return impl_->GetFontDescriptionString(); |
| } |
| |
| int FontList::GetFontSize() const { |
| return impl_->GetFontSize(); |
| } |
| |
| const std::vector<Font>& FontList::GetFonts() const { |
| return impl_->GetFonts(); |
| } |
| |
| const Font& FontList::GetPrimaryFont() const { |
| return impl_->GetPrimaryFont(); |
| } |
| |
| FontList::FontList(FontListImpl* impl) : impl_(impl) {} |
| |
| // static |
| const scoped_refptr<FontListImpl>& FontList::GetDefaultImpl() { |
| // SetDefaultFontDescription() must be called and the default font description |
| // must be set earlier than any call of this function. |
| DCHECK(!(g_default_font_description == NULL)) // != is not overloaded. |
| << "SetDefaultFontDescription has not been called."; |
| |
| if (!g_default_impl_initialized) { |
| g_default_impl.Get() = |
| g_default_font_description.Get().empty() ? |
| new FontListImpl(Font()) : |
| new FontListImpl(g_default_font_description.Get()); |
| g_default_impl_initialized = true; |
| } |
| |
| return g_default_impl.Get(); |
| } |
| |
| } // namespace gfx |