Bug 1053652 - Cannot open include file: 'dwrite_1.h'. r=gw280

Imports/Transplants upstream https://codereview.chromium.org/552383002/

gfx/skia/trunk/src/ports/SkScalerContext_win_dw.cpp

@@ -26,7 +26,9 @@
 #include "SkTypeface_win_dw.h"
 
 #include <dwrite.h>
+#if SK_HAS_DWRITE_1_H
 #  include <dwrite_1.h>
+#endif
 
 static bool isLCD(const SkScalerContext::Rec& rec) {
     return SkMask::kLCD16_Format == rec.fMaskFormat ||
@@ -479,6 +481,7 @@ void SkScalerContext_DW::generateFontMetrics(SkPaint::FontMetrics* metrics) {
     metrics->fFlags |= SkPaint::FontMetrics::kUnderlineThinknessIsValid_Flag;
     metrics->fFlags |= SkPaint::FontMetrics::kUnderlinePositionIsValid_Flag;
 
+#if SK_HAS_DWRITE_1_H
     if (NULL != fTypeface->fDWriteFontFace1.get()) {
         DWRITE_FONT_METRICS1 dwfm1;
         fTypeface->fDWriteFontFace1->GetMetrics(&dwfm1);
@@ -488,7 +491,12 @@ void SkScalerContext_DW::generateFontMetrics(SkPaint::FontMetrics* metrics) {
         metrics->fXMax = fTextSizeRender * SkIntToScalar(dwfm1.glyphBoxRight) / upem;
 
         metrics->fMaxCharWidth = metrics->fXMax - metrics->fXMin;
-    } else {
+        return;
+    }
+#else
+#  pragma message("No dwrite_1.h is available, font metrics may be affected.")
+#endif
+
     AutoTDWriteTable<SkOTTableHead> head(fTypeface->fDWriteFontFace.get());
     if (head.fExists &&
         head.fSize >= sizeof(SkOTTableHead) &&
@@ -500,12 +508,12 @@ void SkScalerContext_DW::generateFontMetrics(SkPaint::FontMetrics* metrics) {
         metrics->fXMax = fTextSizeRender * (int16_t)SkEndian_SwapBE16(head->xMax) / upem;
 
         metrics->fMaxCharWidth = metrics->fXMax - metrics->fXMin;
-        } else {
+        return;
+    }
+
     metrics->fTop = metrics->fAscent;
     metrics->fBottom = metrics->fDescent;
 }
-    }
-}
 
 ///////////////////////////////////////////////////////////////////////////////
 

gfx/skia/trunk/src/ports/SkTypeface_win_dw.h

@@ -17,7 +17,9 @@
 #include "SkTypes.h"
 
 #include <dwrite.h>
+#if SK_HAS_DWRITE_1_H
 #  include <dwrite_1.h>
+#endif
 
 class SkFontDescriptor;
 struct SkScalerContextRec;
@@ -52,11 +54,13 @@ private:
         , fDWriteFont(SkRefComPtr(font))
         , fDWriteFontFace(SkRefComPtr(fontFace))
     {
+#if SK_HAS_DWRITE_1_H
         if (!SUCCEEDED(fDWriteFontFace->QueryInterface(&fDWriteFontFace1))) {
             // IUnknown::QueryInterface states that if it fails, punk will be set to NULL.
             // http://blogs.msdn.com/b/oldnewthing/archive/2004/03/26/96777.aspx
             SK_ALWAYSBREAK(NULL == fDWriteFontFace1.get());
         }
+#endif
     }
 
 public:
@@ -66,7 +70,9 @@ public:
     SkTScopedComPtr<IDWriteFontFamily> fDWriteFontFamily;
     SkTScopedComPtr<IDWriteFont> fDWriteFont;
     SkTScopedComPtr<IDWriteFontFace> fDWriteFontFace;
+#if SK_HAS_DWRITE_1_H
     SkTScopedComPtr<IDWriteFontFace1> fDWriteFontFace1;
+#endif
 
     static DWriteFontTypeface* Create(IDWriteFactory* factory,
                                       IDWriteFontFace* fontFace,

gfx/skia/trunk/src/utils/win/SkDWrite.h

@@ -11,12 +11,17 @@
 #include "SkTemplates.h"
 
 #include <dwrite.h>
+#include <winsdkver.h>
 
 class SkString;
 
 ////////////////////////////////////////////////////////////////////////////////
 // Factory
 
+#ifndef SK_HAS_DWRITE_1_H
+#define SK_HAS_DWRITE_1_H (WINVER_MAXVER >= 0x0602)
+#endif
+
 IDWriteFactory* sk_get_dwrite_factory();
 
 ////////////////////////////////////////////////////////////////////////////////