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-rw-r--r--ui/gfx/font.cc4
-rw-r--r--ui/gfx/font.h3
-rw-r--r--ui/gfx/font_list.cc5
-rw-r--r--ui/gfx/font_list.h4
-rw-r--r--ui/gfx/font_unittest.cc49
-rw-r--r--ui/gfx/platform_font.h4
-rw-r--r--ui/gfx/platform_font_ios.h2
-rw-r--r--ui/gfx/platform_font_ios.mm5
-rw-r--r--ui/gfx/platform_font_mac.h2
-rw-r--r--ui/gfx/platform_font_mac.mm6
-rw-r--r--ui/gfx/platform_font_pango.cc11
-rw-r--r--ui/gfx/platform_font_pango.h1
-rw-r--r--ui/gfx/platform_font_win.cc21
-rw-r--r--ui/gfx/platform_font_win.h5
14 files changed, 93 insertions, 29 deletions
diff --git a/ui/gfx/font.cc b/ui/gfx/font.cc
index aa4638c..7f6ac7c 100644
--- a/ui/gfx/font.cc
+++ b/ui/gfx/font.cc
@@ -54,6 +54,10 @@ int Font::GetBaseline() const {
return platform_font_->GetBaseline();
}
+int Font::GetCapHeight() const {
+ return platform_font_->GetCapHeight();
+}
+
int Font::GetAverageCharacterWidth() const {
return platform_font_->GetAverageCharacterWidth();
}
diff --git a/ui/gfx/font.h b/ui/gfx/font.h
index 5187ec4..020ab64 100644
--- a/ui/gfx/font.h
+++ b/ui/gfx/font.h
@@ -69,6 +69,9 @@ class GFX_EXPORT Font {
// Returns the baseline, or ascent, of the font.
int GetBaseline() const;
+ // Returns the cap height of the font.
+ int GetCapHeight() const;
+
// Returns the average character width for the font.
int GetAverageCharacterWidth() const;
diff --git a/ui/gfx/font_list.cc b/ui/gfx/font_list.cc
index e01483a..72c8777 100644
--- a/ui/gfx/font_list.cc
+++ b/ui/gfx/font_list.cc
@@ -177,6 +177,11 @@ int FontList::GetBaseline() const {
return common_baseline_;
}
+int FontList::GetCapHeight() const {
+ // Assume the primary font is used to render Latin characters.
+ return GetPrimaryFont().GetCapHeight();
+}
+
int FontList::GetStringWidth(const base::string16& text) const {
// Rely on the primary font metrics for the time being.
// TODO(yukishiino): Not only the first font, all the fonts in the list should
diff --git a/ui/gfx/font_list.h b/ui/gfx/font_list.h
index 96398a1..2c47f4c 100644
--- a/ui/gfx/font_list.h
+++ b/ui/gfx/font_list.h
@@ -81,6 +81,10 @@ class GFX_EXPORT FontList {
// fonts in the font list.
int GetBaseline() const;
+ // Returns the cap height of this font list.
+ // Currently returns the cap height of the primary font.
+ int GetCapHeight() const;
+
// Returns the number of horizontal pixels needed to display |text|.
int GetStringWidth(const base::string16& text) const;
diff --git a/ui/gfx/font_unittest.cc b/ui/gfx/font_unittest.cc
index 6b5cb79..247b2f3 100644
--- a/ui/gfx/font_unittest.cc
+++ b/ui/gfx/font_unittest.cc
@@ -59,10 +59,10 @@ int ScopedMinimumFontSizeCallback::minimum_size_ = 0;
TEST_F(FontTest, LoadArial) {
Font cf("Arial", 16);
NativeFont native = cf.GetNativeFont();
- ASSERT_TRUE(native);
- ASSERT_EQ(cf.GetStyle(), Font::NORMAL);
- ASSERT_EQ(cf.GetFontSize(), 16);
- ASSERT_EQ(cf.GetFontName(), "Arial");
+ EXPECT_TRUE(native);
+ EXPECT_EQ(cf.GetStyle(), Font::NORMAL);
+ EXPECT_EQ(cf.GetFontSize(), 16);
+ EXPECT_EQ(cf.GetFontName(), "Arial");
FreeIfNecessary(native);
}
@@ -70,45 +70,56 @@ TEST_F(FontTest, LoadArialBold) {
Font cf("Arial", 16);
Font bold(cf.DeriveFont(0, Font::BOLD));
NativeFont native = bold.GetNativeFont();
- ASSERT_TRUE(native);
- ASSERT_EQ(bold.GetStyle(), Font::BOLD);
+ EXPECT_TRUE(native);
+ EXPECT_EQ(bold.GetStyle(), Font::BOLD);
FreeIfNecessary(native);
}
TEST_F(FontTest, Ascent) {
Font cf("Arial", 16);
- ASSERT_GT(cf.GetBaseline(), 2);
- ASSERT_LE(cf.GetBaseline(), 22);
+ EXPECT_GT(cf.GetBaseline(), 2);
+ EXPECT_LE(cf.GetBaseline(), 22);
}
TEST_F(FontTest, Height) {
Font cf("Arial", 16);
- ASSERT_GE(cf.GetHeight(), 16);
+ EXPECT_GE(cf.GetHeight(), 16);
// TODO(akalin): Figure out why height is so large on Linux.
- ASSERT_LE(cf.GetHeight(), 26);
+ EXPECT_LE(cf.GetHeight(), 26);
+}
+
+TEST_F(FontTest, CapHeight) {
+ Font cf("Arial", 16);
+ EXPECT_GT(cf.GetCapHeight(), 0);
+ EXPECT_GT(cf.GetCapHeight(), cf.GetHeight() / 2);
+#if defined(OS_CHROMEOS) || defined(OS_LINUX)
+ EXPECT_EQ(cf.GetCapHeight(), cf.GetHeight());
+#else
+ EXPECT_LT(cf.GetCapHeight(), cf.GetHeight());
+#endif
}
TEST_F(FontTest, AvgWidths) {
Font cf("Arial", 16);
- ASSERT_EQ(cf.GetExpectedTextWidth(0), 0);
- ASSERT_GT(cf.GetExpectedTextWidth(1), cf.GetExpectedTextWidth(0));
- ASSERT_GT(cf.GetExpectedTextWidth(2), cf.GetExpectedTextWidth(1));
- ASSERT_GT(cf.GetExpectedTextWidth(3), cf.GetExpectedTextWidth(2));
+ EXPECT_EQ(cf.GetExpectedTextWidth(0), 0);
+ EXPECT_GT(cf.GetExpectedTextWidth(1), cf.GetExpectedTextWidth(0));
+ EXPECT_GT(cf.GetExpectedTextWidth(2), cf.GetExpectedTextWidth(1));
+ EXPECT_GT(cf.GetExpectedTextWidth(3), cf.GetExpectedTextWidth(2));
}
TEST_F(FontTest, AvgCharWidth) {
Font cf("Arial", 16);
- ASSERT_GT(cf.GetAverageCharacterWidth(), 0);
+ EXPECT_GT(cf.GetAverageCharacterWidth(), 0);
}
TEST_F(FontTest, Widths) {
Font cf("Arial", 16);
- ASSERT_EQ(cf.GetStringWidth(base::string16()), 0);
- ASSERT_GT(cf.GetStringWidth(ASCIIToUTF16("a")),
+ EXPECT_EQ(cf.GetStringWidth(base::string16()), 0);
+ EXPECT_GT(cf.GetStringWidth(ASCIIToUTF16("a")),
cf.GetStringWidth(base::string16()));
- ASSERT_GT(cf.GetStringWidth(ASCIIToUTF16("ab")),
+ EXPECT_GT(cf.GetStringWidth(ASCIIToUTF16("ab")),
cf.GetStringWidth(ASCIIToUTF16("a")));
- ASSERT_GT(cf.GetStringWidth(ASCIIToUTF16("abc")),
+ EXPECT_GT(cf.GetStringWidth(ASCIIToUTF16("abc")),
cf.GetStringWidth(ASCIIToUTF16("ab")));
}
diff --git a/ui/gfx/platform_font.h b/ui/gfx/platform_font.h
index 7670d47..d576bcd 100644
--- a/ui/gfx/platform_font.h
+++ b/ui/gfx/platform_font.h
@@ -42,6 +42,9 @@ class GFX_EXPORT PlatformFont : public base::RefCounted<PlatformFont> {
// Returns the baseline, or ascent, of the font.
virtual int GetBaseline() const = 0;
+ // Returns the cap height of the font.
+ virtual int GetCapHeight() const = 0;
+
// Returns the average character width for the font.
virtual int GetAverageCharacterWidth() const = 0;
@@ -76,4 +79,3 @@ class GFX_EXPORT PlatformFont : public base::RefCounted<PlatformFont> {
} // namespace gfx
#endif // UI_GFX_PLATFORM_FONT_H_
-
diff --git a/ui/gfx/platform_font_ios.h b/ui/gfx/platform_font_ios.h
index 789b591..2b30955 100644
--- a/ui/gfx/platform_font_ios.h
+++ b/ui/gfx/platform_font_ios.h
@@ -20,6 +20,7 @@ class PlatformFontIOS : public PlatformFont {
virtual Font DeriveFont(int size_delta, int style) const OVERRIDE;
virtual int GetHeight() const OVERRIDE;
virtual int GetBaseline() const OVERRIDE;
+ virtual int GetCapHeight() const OVERRIDE;
virtual int GetAverageCharacterWidth() const OVERRIDE;
virtual int GetStringWidth(const base::string16& text) const OVERRIDE;
virtual int GetExpectedTextWidth(int length) const OVERRIDE;
@@ -47,6 +48,7 @@ class PlatformFontIOS : public PlatformFont {
// Cached metrics, generated at construction.
int height_;
int ascent_;
+ int cap_height_;
int average_width_;
DISALLOW_COPY_AND_ASSIGN(PlatformFontIOS);
diff --git a/ui/gfx/platform_font_ios.mm b/ui/gfx/platform_font_ios.mm
index cfc69cf..92608d3 100644
--- a/ui/gfx/platform_font_ios.mm
+++ b/ui/gfx/platform_font_ios.mm
@@ -51,6 +51,10 @@ int PlatformFontIOS::GetBaseline() const {
return ascent_;
}
+int PlatformFontIOS::GetCapHeight() const {
+ return cap_height_;
+}
+
int PlatformFontIOS::GetAverageCharacterWidth() const {
return average_width_;
}
@@ -103,6 +107,7 @@ void PlatformFontIOS::CalculateMetrics() {
UIFont* font = GetNativeFont();
height_ = font.lineHeight;
ascent_ = font.ascender;
+ cap_height_ = font.capHeight;
average_width_ = [@"x" sizeWithFont:font].width;
}
diff --git a/ui/gfx/platform_font_mac.h b/ui/gfx/platform_font_mac.h
index 13c8677..e9d0714 100644
--- a/ui/gfx/platform_font_mac.h
+++ b/ui/gfx/platform_font_mac.h
@@ -21,6 +21,7 @@ class PlatformFontMac : public PlatformFont {
virtual Font DeriveFont(int size_delta, int style) const OVERRIDE;
virtual int GetHeight() const OVERRIDE;
virtual int GetBaseline() const OVERRIDE;
+ virtual int GetCapHeight() const OVERRIDE;
virtual int GetAverageCharacterWidth() const OVERRIDE;
virtual int GetStringWidth(const base::string16& text) const OVERRIDE;
virtual int GetExpectedTextWidth(int length) const OVERRIDE;
@@ -48,6 +49,7 @@ class PlatformFontMac : public PlatformFont {
// Cached metrics, generated at construction.
int height_;
int ascent_;
+ int cap_height_;
int average_width_;
DISALLOW_COPY_AND_ASSIGN(PlatformFontMac);
diff --git a/ui/gfx/platform_font_mac.mm b/ui/gfx/platform_font_mac.mm
index bf0c0bd..c75bf66 100644
--- a/ui/gfx/platform_font_mac.mm
+++ b/ui/gfx/platform_font_mac.mm
@@ -59,6 +59,10 @@ int PlatformFontMac::GetBaseline() const {
return ascent_;
}
+int PlatformFontMac::GetCapHeight() const {
+ return cap_height_;
+}
+
int PlatformFontMac::GetAverageCharacterWidth() const {
return average_width_;
}
@@ -128,6 +132,7 @@ void PlatformFontMac::CalculateMetrics() {
[[NSLayoutManager alloc] init]);
height_ = [layout_manager defaultLineHeightForFont:font];
ascent_ = [font ascender];
+ cap_height_ = [font capHeight];
average_width_ =
NSWidth([font boundingRectForGlyph:[font glyphWithName:@"x"]]);
}
@@ -152,4 +157,3 @@ PlatformFont* PlatformFont::CreateFromNameAndSize(const std::string& font_name,
}
} // namespace gfx
-
diff --git a/ui/gfx/platform_font_pango.cc b/ui/gfx/platform_font_pango.cc
index 0ddf363..856acc2 100644
--- a/ui/gfx/platform_font_pango.cc
+++ b/ui/gfx/platform_font_pango.cc
@@ -182,6 +182,16 @@ int PlatformFontPango::GetBaseline() const {
return ascent_pixels_;
}
+int PlatformFontPango::GetCapHeight() const {
+ // Return the height as an approximation because Pango doesn't support cap
+ // height.
+ // TODO(yukishiino): Come up with a better approximation of cap height, or
+ // support cap height metrics. Another option is to have a hard-coded table
+ // of cap height for major fonts used in Chromium/Chrome.
+ // See http://crbug.com/249507
+ return height_pixels_;
+}
+
int PlatformFontPango::GetAverageCharacterWidth() const {
const_cast<PlatformFontPango*>(this)->InitPangoMetrics();
return SkScalarRound(average_width_pixels_);
@@ -381,7 +391,6 @@ void PlatformFontPango::InitPangoMetrics() {
}
}
-
double PlatformFontPango::GetAverageWidth() const {
const_cast<PlatformFontPango*>(this)->InitPangoMetrics();
return average_width_pixels_;
diff --git a/ui/gfx/platform_font_pango.h b/ui/gfx/platform_font_pango.h
index 0846f5e..136bf671 100644
--- a/ui/gfx/platform_font_pango.h
+++ b/ui/gfx/platform_font_pango.h
@@ -49,6 +49,7 @@ class GFX_EXPORT PlatformFontPango : public PlatformFont {
virtual Font DeriveFont(int size_delta, int style) const OVERRIDE;
virtual int GetHeight() const OVERRIDE;
virtual int GetBaseline() const OVERRIDE;
+ virtual int GetCapHeight() const OVERRIDE;
virtual int GetAverageCharacterWidth() const OVERRIDE;
virtual int GetStringWidth(const base::string16& text) const OVERRIDE;
virtual int GetExpectedTextWidth(int length) const OVERRIDE;
diff --git a/ui/gfx/platform_font_win.cc b/ui/gfx/platform_font_win.cc
index 2d4c006..a97da2e 100644
--- a/ui/gfx/platform_font_win.cc
+++ b/ui/gfx/platform_font_win.cc
@@ -141,6 +141,10 @@ int PlatformFontWin::GetBaseline() const {
return font_ref_->baseline();
}
+int PlatformFontWin::GetCapHeight() const {
+ return font_ref_->cap_height();
+}
+
int PlatformFontWin::GetAverageCharacterWidth() const {
return font_ref_->ave_char_width();
}
@@ -235,6 +239,8 @@ PlatformFontWin::HFontRef* PlatformFontWin::CreateHFontRef(HFONT font) {
const int height = std::max<int>(1, font_metrics.tmHeight);
const int baseline = std::max<int>(1, font_metrics.tmAscent);
+ const int cap_height =
+ std::max<int>(1, font_metrics.tmAscent - font_metrics.tmInternalLeading);
const int ave_char_width = std::max<int>(1, font_metrics.tmAveCharWidth);
const int font_size =
std::max<int>(1, font_metrics.tmHeight - font_metrics.tmInternalLeading);
@@ -246,7 +252,8 @@ PlatformFontWin::HFontRef* PlatformFontWin::CreateHFontRef(HFONT font) {
if (font_metrics.tmWeight >= kTextMetricWeightBold)
style |= Font::BOLD;
- return new HFontRef(font, font_size, height, baseline, ave_char_width, style);
+ return new HFontRef(font, font_size, height, baseline, cap_height,
+ ave_char_width, style);
}
PlatformFontWin::PlatformFontWin(HFontRef* hfont_ref) : font_ref_(hfont_ref) {
@@ -256,15 +263,17 @@ PlatformFontWin::PlatformFontWin(HFontRef* hfont_ref) : font_ref_(hfont_ref) {
// PlatformFontWin::HFontRef:
PlatformFontWin::HFontRef::HFontRef(HFONT hfont,
- int font_size,
- int height,
- int baseline,
- int ave_char_width,
- int style)
+ int font_size,
+ int height,
+ int baseline,
+ int cap_height,
+ int ave_char_width,
+ int style)
: hfont_(hfont),
font_size_(font_size),
height_(height),
baseline_(baseline),
+ cap_height_(cap_height),
ave_char_width_(ave_char_width),
style_(style),
dlu_base_x_(-1),
diff --git a/ui/gfx/platform_font_win.h b/ui/gfx/platform_font_win.h
index 77f3658..035ce8a 100644
--- a/ui/gfx/platform_font_win.h
+++ b/ui/gfx/platform_font_win.h
@@ -57,6 +57,7 @@ class GFX_EXPORT PlatformFontWin : public PlatformFont {
virtual Font DeriveFont(int size_delta, int style) const OVERRIDE;
virtual int GetHeight() const OVERRIDE;
virtual int GetBaseline() const OVERRIDE;
+ virtual int GetCapHeight() const OVERRIDE;
virtual int GetAverageCharacterWidth() const OVERRIDE;
virtual int GetStringWidth(const base::string16& text) const OVERRIDE;
virtual int GetExpectedTextWidth(int length) const OVERRIDE;
@@ -84,6 +85,7 @@ class GFX_EXPORT PlatformFontWin : public PlatformFont {
int font_size,
int height,
int baseline,
+ int cap_height,
int ave_char_width,
int style);
@@ -91,6 +93,7 @@ class GFX_EXPORT PlatformFontWin : public PlatformFont {
HFONT hfont() const { return hfont_; }
int height() const { return height_; }
int baseline() const { return baseline_; }
+ int cap_height() const { return cap_height_; }
int ave_char_width() const { return ave_char_width_; }
int style() const { return style_; }
const std::string& font_name() const { return font_name_; }
@@ -109,6 +112,7 @@ class GFX_EXPORT PlatformFontWin : public PlatformFont {
const int font_size_;
const int height_;
const int baseline_;
+ const int cap_height_;
const int ave_char_width_;
const int style_;
// Average character width in dialog units. This is queried lazily from the
@@ -155,4 +159,3 @@ class GFX_EXPORT PlatformFontWin : public PlatformFont {
} // namespace gfx
#endif // UI_GFX_PLATFORM_FONT_WIN_H_
-
generated by cgit v1.1 at 2025-04-07 11:57:07 +0000