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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/191440">191440</a></dd>
<dt>Author</dt> <dd>fred.wang@free.fr</dd>
<dt>Date</dt> <dd>2015-10-21 23:45:21 -0700 (Wed, 21 Oct 2015)</dd>
</dl>
<h3>Log Message</h3>
<pre>[Mac] Add support for the USE_TYPO_METRICS flag
https://bugs.webkit.org/show_bug.cgi?id=150394
Reviewed by Myles C. Maxfield.
Source/WebCore:
Make the Cocoa backend use the typo metrics for fonts with a MATH table when the OS/2 USE_TYPO_METRICS flag is set.
No new tests because this is already tested by fonts/use-typo-metrics-1.html
* platform/graphics/cocoa/FontCocoa.mm:
(WebCore::Font::platformInit): Verify whether the OS/2 USE_TYPO_METRICS flag is set and use the typo metrics if that is the case.
LayoutTests:
Update font, reference and Mac expectation for fonts/use-typo-metrics-1.html
* fonts/lineheight5000-typolineheight2300.woff: Add a MATH table.
* platform/mac-mavericks/mathml/opentype/opentype-stretchy-horizontal-expected.txt: Updated.
* platform/mac/TestExpectations: Remove Mac failure expectation.
* platform/mac/mathml/opentype/opentype-stretchy-expected.txt: Updated.
* platform/mac/mathml/opentype/opentype-stretchy-horizontal-expected.txt: Updated.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsChangeLog">trunk/LayoutTests/ChangeLog</a></li>
<li><a href="#trunkLayoutTestsfontslineheight5000typolineheight2300woff">trunk/LayoutTests/fonts/lineheight5000-typolineheight2300.woff</a></li>
<li><a href="#trunkLayoutTestsplatformmacTestExpectations">trunk/LayoutTests/platform/mac/TestExpectations</a></li>
<li><a href="#trunkLayoutTestsplatformmacmathmlopentypeopentypestretchyexpectedtxt">trunk/LayoutTests/platform/mac/mathml/opentype/opentype-stretchy-expected.txt</a></li>
<li><a href="#trunkLayoutTestsplatformmacmathmlopentypeopentypestretchyhorizontalexpectedtxt">trunk/LayoutTests/platform/mac/mathml/opentype/opentype-stretchy-horizontal-expected.txt</a></li>
<li><a href="#trunkLayoutTestsplatformmacmavericksmathmlopentypeopentypestretchyhorizontalexpectedtxt">trunk/LayoutTests/platform/mac-mavericks/mathml/opentype/opentype-stretchy-horizontal-expected.txt</a></li>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreplatformgraphicscocoaFontCocoamm">trunk/Source/WebCore/platform/graphics/cocoa/FontCocoa.mm</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/ChangeLog (191439 => 191440)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/ChangeLog 2015-10-22 06:10:53 UTC (rev 191439)
+++ trunk/LayoutTests/ChangeLog 2015-10-22 06:45:21 UTC (rev 191440)
</span><span class="lines">@@ -1,3 +1,18 @@
</span><ins>+2015-10-21 Frederic Wang <fred.wang@free.fr>
+
+ [Mac] Add support for the USE_TYPO_METRICS flag
+ https://bugs.webkit.org/show_bug.cgi?id=150394
+
+ Reviewed by Myles C. Maxfield.
+
+ Update font, reference and Mac expectation for fonts/use-typo-metrics-1.html
+
+ * fonts/lineheight5000-typolineheight2300.woff: Add a MATH table.
+ * platform/mac-mavericks/mathml/opentype/opentype-stretchy-horizontal-expected.txt: Updated.
+ * platform/mac/TestExpectations: Remove Mac failure expectation.
+ * platform/mac/mathml/opentype/opentype-stretchy-expected.txt: Updated.
+ * platform/mac/mathml/opentype/opentype-stretchy-horizontal-expected.txt: Updated.
+
</ins><span class="cx"> 2015-10-21 Ryan Haddad <ryanhaddad@apple.com>
</span><span class="cx">
</span><span class="cx"> Adding http/tests/media/video-load-suspend.html to the list of flaky media tests
</span></span></pre></div>
<a id="trunkLayoutTestsfontslineheight5000typolineheight2300woff"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/fonts/lineheight5000-typolineheight2300.woff (191439 => 191440)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/fonts/lineheight5000-typolineheight2300.woff 2015-10-22 06:10:53 UTC (rev 191439)
+++ trunk/LayoutTests/fonts/lineheight5000-typolineheight2300.woff 2015-10-22 06:45:21 UTC (rev 191440)
</span><span class="lines">@@ -1,17 +1,16 @@
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</ins><span class="cx">\ No newline at end of file
</span></span></pre></div>
<a id="trunkLayoutTestsplatformmacTestExpectations"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/platform/mac/TestExpectations (191439 => 191440)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/platform/mac/TestExpectations 2015-10-22 06:10:53 UTC (rev 191439)
+++ trunk/LayoutTests/platform/mac/TestExpectations 2015-10-22 06:45:21 UTC (rev 191440)
</span><span class="lines">@@ -1348,6 +1348,3 @@
</span><span class="cx">
</span><span class="cx"> # Imported Blink tests which have not been investigated.
</span><span class="cx"> imported/blink/compositing/video/video-controls-layer-creation-squashing.html [ Pass ImageOnlyFailure ]
</span><del>-
-# USE_TYPO_METRICS is not implemented on mac.
-webkit.org/b/131839 fonts/use-typo-metrics-1.html [ ImageOnlyFailure ]
</del></span></pre></div>
<a id="trunkLayoutTestsplatformmacmathmlopentypeopentypestretchyexpectedtxt"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/platform/mac/mathml/opentype/opentype-stretchy-expected.txt (191439 => 191440)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/platform/mac/mathml/opentype/opentype-stretchy-expected.txt 2015-10-22 06:10:53 UTC (rev 191439)
+++ trunk/LayoutTests/platform/mac/mathml/opentype/opentype-stretchy-expected.txt 2015-10-22 06:45:21 UTC (rev 191440)
</span><span class="lines">@@ -9,7 +9,7 @@
</span><span class="cx"> RenderMathMLOperator {mo} at (0,0) size 47x11
</span><span class="cx"> RenderMathMLBlock (anonymous, flex) at (2,0) size 42x3
</span><span class="cx"> RenderBlock (anonymous) at (0,0) size 3x3
</span><del>- RenderText at (0,-3) size 3x10
</del><ins>+ RenderText at (0,-3) size 3x0
</ins><span class="cx"> text run at (0,-3) width 3: "\x{219F}"
</span><span class="cx"> RenderText {#text} at (48,16) size 5x18
</span><span class="cx"> text run at (48,16) width 5: " "
</span><span class="lines">@@ -18,7 +18,7 @@
</span><span class="cx"> RenderMathMLOperator {mo} at (0,0) size 47x21
</span><span class="cx"> RenderMathMLBlock (anonymous, flex) at (2,0) size 42x3
</span><span class="cx"> RenderBlock (anonymous) at (0,0) size 3x3
</span><del>- RenderText at (0,-3) size 3x10
</del><ins>+ RenderText at (0,-3) size 3x0
</ins><span class="cx"> text run at (0,-3) width 3: "\x{219F}"
</span><span class="cx"> RenderText {#text} at (100,16) size 5x18
</span><span class="cx"> text run at (100,16) width 5: " "
</span><span class="lines">@@ -27,7 +27,7 @@
</span><span class="cx"> RenderMathMLOperator {mo} at (0,0) size 47x31
</span><span class="cx"> RenderMathMLBlock (anonymous, flex) at (2,0) size 42x3
</span><span class="cx"> RenderBlock (anonymous) at (0,0) size 3x3
</span><del>- RenderText at (0,-3) size 3x10
</del><ins>+ RenderText at (0,-3) size 3x0
</ins><span class="cx"> text run at (0,-3) width 3: "\x{219F}"
</span><span class="cx"> RenderText {#text} at (0,0) size 0x0
</span><span class="cx"> RenderBlock {P} at (0,50) size 784x154
</span><span class="lines">@@ -36,7 +36,7 @@
</span><span class="cx"> RenderMathMLOperator {mo} at (0,0) size 47x150
</span><span class="cx"> RenderMathMLBlock (anonymous, flex) at (2,0) size 42x3
</span><span class="cx"> RenderBlock (anonymous) at (0,0) size 3x3
</span><del>- RenderText at (0,-3) size 3x10
</del><ins>+ RenderText at (0,-3) size 3x0
</ins><span class="cx"> text run at (0,-3) width 3: "\x{219F}"
</span><span class="cx"> RenderText {#text} at (0,0) size 0x0
</span><span class="cx"> RenderBlock {P} at (0,220) size 784x85
</span><span class="lines">@@ -45,6 +45,6 @@
</span><span class="cx"> RenderMathMLOperator {mo} at (0,0) size 84x82
</span><span class="cx"> RenderMathMLBlock (anonymous, flex) at (0,0) size 83x12
</span><span class="cx"> RenderBlock (anonymous) at (0,0) size 11x12
</span><del>- RenderText at (0,6) size 11x10
</del><ins>+ RenderText at (0,6) size 11x0
</ins><span class="cx"> text run at (0,6) width 11: "\x{2A1B}"
</span><span class="cx"> RenderText {#text} at (0,0) size 0x0
</span></span></pre></div>
<a id="trunkLayoutTestsplatformmacmathmlopentypeopentypestretchyhorizontalexpectedtxt"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/platform/mac/mathml/opentype/opentype-stretchy-horizontal-expected.txt (191439 => 191440)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/platform/mac/mathml/opentype/opentype-stretchy-horizontal-expected.txt 2015-10-22 06:10:53 UTC (rev 191439)
+++ trunk/LayoutTests/platform/mac/mathml/opentype/opentype-stretchy-horizontal-expected.txt 2015-10-22 06:45:21 UTC (rev 191440)
</span><span class="lines">@@ -10,7 +10,7 @@
</span><span class="cx"> RenderMathMLOperator {mo} at (0,1) size 16x21
</span><span class="cx"> RenderMathMLBlock (anonymous, flex) at (2,0) size 11x4
</span><span class="cx"> RenderBlock (anonymous) at (0,0) size 2x4
</span><del>- RenderText at (0,-3) size 2x10
</del><ins>+ RenderText at (0,-3) size 2x0
</ins><span class="cx"> text run at (0,-3) width 2: "\x{219C}"
</span><span class="cx"> RenderMathMLSpace {mspace} at (4,0) size 8x1
</span><span class="cx"> RenderText {#text} at (0,0) size 0x0
</span><span class="lines">@@ -21,7 +21,7 @@
</span><span class="cx"> RenderMathMLOperator {mo} at (0,1) size 26x21
</span><span class="cx"> RenderMathMLBlock (anonymous, flex) at (2,0) size 22x4
</span><span class="cx"> RenderBlock (anonymous) at (0,0) size 2x4
</span><del>- RenderText at (0,-3) size 2x10
</del><ins>+ RenderText at (0,-3) size 2x0
</ins><span class="cx"> text run at (0,-3) width 2: "\x{219C}"
</span><span class="cx"> RenderMathMLSpace {mspace} at (5,0) size 16x1
</span><span class="cx"> RenderText {#text} at (0,0) size 0x0
</span><span class="lines">@@ -32,7 +32,7 @@
</span><span class="cx"> RenderMathMLOperator {mo} at (0,1) size 156x41
</span><span class="cx"> RenderMathMLBlock (anonymous, flex) at (2,0) size 151x4
</span><span class="cx"> RenderBlock (anonymous) at (0,0) size 2x4
</span><del>- RenderText at (0,-3) size 2x10
</del><ins>+ RenderText at (0,-3) size 2x0
</ins><span class="cx"> text run at (0,-3) width 2: "\x{219C}"
</span><span class="cx"> RenderMathMLSpace {mspace} at (2,0) size 151x1
</span><span class="cx"> RenderText {#text} at (0,0) size 0x0
</span></span></pre></div>
<a id="trunkLayoutTestsplatformmacmavericksmathmlopentypeopentypestretchyhorizontalexpectedtxt"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/platform/mac-mavericks/mathml/opentype/opentype-stretchy-horizontal-expected.txt (191439 => 191440)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/platform/mac-mavericks/mathml/opentype/opentype-stretchy-horizontal-expected.txt 2015-10-22 06:10:53 UTC (rev 191439)
+++ trunk/LayoutTests/platform/mac-mavericks/mathml/opentype/opentype-stretchy-horizontal-expected.txt 2015-10-22 06:45:21 UTC (rev 191440)
</span><span class="lines">@@ -10,7 +10,7 @@
</span><span class="cx"> RenderMathMLOperator {mo} at (0,1) size 16x21
</span><span class="cx"> RenderMathMLBlock (anonymous, flex) at (2,0) size 11x4
</span><span class="cx"> RenderBlock (anonymous) at (0,0) size 2x4
</span><del>- RenderText at (0,-3) size 2x10
</del><ins>+ RenderText at (0,-3) size 2x0
</ins><span class="cx"> text run at (0,-3) width 2: "\x{219C}"
</span><span class="cx"> RenderMathMLSpace {mspace} at (4,0) size 8x1
</span><span class="cx"> RenderText {#text} at (0,0) size 0x0
</span><span class="lines">@@ -21,7 +21,7 @@
</span><span class="cx"> RenderMathMLOperator {mo} at (0,1) size 26x21
</span><span class="cx"> RenderMathMLBlock (anonymous, flex) at (2,0) size 22x4
</span><span class="cx"> RenderBlock (anonymous) at (0,0) size 2x4
</span><del>- RenderText at (0,-3) size 2x10
</del><ins>+ RenderText at (0,-3) size 2x0
</ins><span class="cx"> text run at (0,-3) width 2: "\x{219C}"
</span><span class="cx"> RenderMathMLSpace {mspace} at (5,0) size 16x1
</span><span class="cx"> RenderText {#text} at (0,0) size 0x0
</span><span class="lines">@@ -32,7 +32,7 @@
</span><span class="cx"> RenderMathMLOperator {mo} at (0,1) size 156x41
</span><span class="cx"> RenderMathMLBlock (anonymous, flex) at (2,0) size 151x4
</span><span class="cx"> RenderBlock (anonymous) at (0,0) size 2x4
</span><del>- RenderText at (0,-3) size 2x10
</del><ins>+ RenderText at (0,-3) size 2x0
</ins><span class="cx"> text run at (0,-3) width 2: "\x{219C}"
</span><span class="cx"> RenderMathMLSpace {mspace} at (2,0) size 151x1
</span><span class="cx"> RenderText {#text} at (0,0) size 0x0
</span></span></pre></div>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (191439 => 191440)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2015-10-22 06:10:53 UTC (rev 191439)
+++ trunk/Source/WebCore/ChangeLog 2015-10-22 06:45:21 UTC (rev 191440)
</span><span class="lines">@@ -1,3 +1,17 @@
</span><ins>+2015-10-21 Frederic Wang <fred.wang@free.fr>
+
+ [Mac] Add support for the USE_TYPO_METRICS flag
+ https://bugs.webkit.org/show_bug.cgi?id=150394
+
+ Reviewed by Myles C. Maxfield.
+
+ Make the Cocoa backend use the typo metrics for fonts with a MATH table when the OS/2 USE_TYPO_METRICS flag is set.
+
+ No new tests because this is already tested by fonts/use-typo-metrics-1.html
+
+ * platform/graphics/cocoa/FontCocoa.mm:
+ (WebCore::Font::platformInit): Verify whether the OS/2 USE_TYPO_METRICS flag is set and use the typo metrics if that is the case.
+
</ins><span class="cx"> 2015-10-21 Zalan Bujtas <zalan@apple.com>
</span><span class="cx">
</span><span class="cx"> Print out the render tree from command line.
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformgraphicscocoaFontCocoamm"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/graphics/cocoa/FontCocoa.mm (191439 => 191440)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/graphics/cocoa/FontCocoa.mm 2015-10-22 06:10:53 UTC (rev 191439)
+++ trunk/Source/WebCore/platform/graphics/cocoa/FontCocoa.mm 2015-10-22 06:45:21 UTC (rev 191440)
</span><span class="lines">@@ -57,6 +57,10 @@
</span><span class="cx"> @end
</span><span class="cx"> #endif
</span><span class="cx">
</span><ins>+#if USE(APPKIT)
+#include "OpenTypeTypes.h"
+#endif
+
</ins><span class="cx"> namespace WebCore {
</span><span class="cx">
</span><span class="cx"> static bool fontHasVerticalGlyphs(CTFontRef ctFont)
</span><span class="lines">@@ -170,6 +174,32 @@
</span><span class="cx">
</span><span class="cx"> float lineGap = scaleEmToUnits(CGFontGetLeading(m_platformData.cgFont()), unitsPerEm) * pointSize;
</span><span class="cx">
</span><ins>+ // The Open Font Format describes the OS/2 USE_TYPO_METRICS flag as follows:
+ // "If set, it is strongly recommended to use OS/2.sTypoAscender - OS/2.sTypoDescender+ OS/2.sTypoLineGap as a value for default line spacing for this font."
+ // We only apply this rule in the important case of fonts with a MATH table.
+ CFArrayRef availableTables = CTFontCopyAvailableTables(m_platformData.cgFont(), kCTFontTableOptionNoOptions);
+ if (CFArrayContainsValue(availableTables, CFRangeMake(0, CFArrayGetCount(availableTables)), kCTFontTableMATH)) {
+ if (CFDataRef os2Table = CGFontCopyTableForTag(kCTFontTableOS2)) {
+ // For the structure of the OS/2 table, see
+ // https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6OS2.html
+ const CFIndex fsSelectionOffset = 16 * 2 + 10 + 4 * 4 + 4 * 1;
+ const CFIndex sTypoAscenderOffset = fsSelectionOffset + 3 * 2;
+ const CFIndex sTypoDescenderOffset = sTypoAscenderOffset + 2;
+ const CFIndex sTypoLineGapOffset = sTypoDescenderOffset + 2;
+ if (CFDataGetLength(os2Table) >= sTypoLineGapOffset + 2) {
+ const UInt8* os2Data = CFDataGetBytePtr(os2Table);
+ const unsigned short useTypoMetricsMask = 1 << 7;
+ if (*(reinterpret_cast<const OpenType::UInt16*>(os2Data + fsSelectionOffset)) & useTypoMetricsMask) {
+ ascent = scaleEmToUnits(*(reinterpret_cast<const OpenType::Int16*>(os2Data + sTypoAscenderOffset)), unitsPerEm) * pointSize;
+ descent = -scaleEmToUnits(*(reinterpret_cast<const OpenType::Int16*>(os2Data + sTypoDescenderOffset)), unitsPerEm) * pointSize;
+ lineGap = scaleEmToUnits(*(reinterpret_cast<const OpenType::Int16*>(os2Data + sTypoLineGapOffset)), unitsPerEm) * pointSize;
+ }
+ }
+ CFRelease(os2Table);
+ }
+ }
+ CFRelease(availableTables);
+
</ins><span class="cx"> // We need to adjust Times, Helvetica, and Courier to closely match the
</span><span class="cx"> // vertical metrics of their Microsoft counterparts that are the de facto
</span><span class="cx"> // web standard. The AppKit adjustment of 20% is too big and is
</span></span></pre>
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