API modifications needed to upstream Android font changes.

Committed: http://code.google.com/p/skia/source/detail?r=9083

R=reed@google.com

Author: djsollen@google.com

Review URL: https://chromiumcodereview.appspot.com/14761003

git-svn-id: http://skia.googlecode.com/svn/trunk@9107 2bbb7eff-a529-9590-31e7-b0007b416f81

5 files changed, 96 insertions, 8 deletions

diff --git a/src/core/SkPaint.cpp b/src/core/SkPaint.cpp
index 6c16428d81..193568effb 100644
--- a/src/core/SkPaint.cpp
+++ b/src/core/SkPaint.cpp
@@ -83,6 +83,7 @@ SkPaint::SkPaint() {
     fHinting    = SkPaintDefaults_Hinting;
     fPrivFlags  = 0;
 #ifdef SK_BUILD_FOR_ANDROID
+    new (&fPaintOptionsAndroid) SkPaintOptionsAndroid;
     fGenerationID = 0;
 #endif
 }
@@ -141,11 +142,15 @@ SkPaint& SkPaint::operator=(const SkPaint& src) {
     SkSafeUnref(fAnnotation);
 
 #ifdef SK_BUILD_FOR_ANDROID
+    fPaintOptionsAndroid.~SkPaintOptionsAndroid();
+
     uint32_t oldGenerationID = fGenerationID;
 #endif
     memcpy(this, &src, sizeof(src));
 #ifdef SK_BUILD_FOR_ANDROID
     fGenerationID = oldGenerationID + 1;
+
+    new (&fPaintOptionsAndroid) SkPaintOptionsAndroid(src.fPaintOptionsAndroid);
 #endif
 
     return *this;
@@ -180,14 +185,19 @@ uint32_t SkPaint::getGenerationID() const {
 void SkPaint::setGenerationID(uint32_t generationID) {
     fGenerationID = generationID;
 }
-#endif
 
-#ifdef SK_BUILD_FOR_ANDROID
 unsigned SkPaint::getBaseGlyphCount(SkUnichar text) const {
     SkAutoGlyphCache autoCache(*this, NULL, NULL);
     SkGlyphCache* cache = autoCache.getCache();
     return cache->getBaseGlyphCount(text);
 }
+
+void SkPaint::setPaintOptionsAndroid(const SkPaintOptionsAndroid& options) {
+    if (options != fPaintOptionsAndroid) {
+        fPaintOptionsAndroid = options;
+        GEN_ID_INC;
+    }
+}
 #endif
 
 void SkPaint::setHinting(Hinting hintingLevel) {
@@ -1806,6 +1816,13 @@ void SkPaint::descriptorProc(const SkDeviceProperties* deviceProperties,
         rec.fMaskFormat = SkMask::kA8_Format;   // force antialiasing when we do the scan conversion
     }
 
+#ifdef SK_BUILD_FOR_ANDROID
+    SkOrderedWriteBuffer androidBuffer(128);
+    fPaintOptionsAndroid.flatten(androidBuffer);
+    descSize += androidBuffer.size();
+    entryCount += 1;
+#endif
+
     ///////////////////////////////////////////////////////////////////////////
     // Now that we're done tweaking the rec, call the PostMakeRec cleanup
     SkScalerContext::PostMakeRec(*this, &rec);
@@ -1818,6 +1835,10 @@ void SkPaint::descriptorProc(const SkDeviceProperties* deviceProperties,
     desc->init();
     desc->addEntry(kRec_SkDescriptorTag, sizeof(rec), &rec);
 
+#ifdef SK_BUILD_FOR_ANDROID
+    add_flattenable(desc, kAndroidOpts_SkDescriptorTag, &androidBuffer);
+#endif
+
     if (pe) {
         add_flattenable(desc, kPathEffect_SkDescriptorTag, &peBuffer);
     }
@@ -1852,6 +1873,11 @@ void SkPaint::descriptorProc(const SkDeviceProperties* deviceProperties,
         desc1->addEntry(kRec_SkDescriptorTag, sizeof(rec), &rec);
         desc2->addEntry(kRec_SkDescriptorTag, sizeof(rec), &rec);
 
+#ifdef SK_BUILD_FOR_ANDROID
+        add_flattenable(desc1, kAndroidOpts_SkDescriptorTag, &androidBuffer);
+        add_flattenable(desc2, kAndroidOpts_SkDescriptorTag, &androidBuffer);
+#endif
+
         if (pe) {
             add_flattenable(desc1, kPathEffect_SkDescriptorTag, &peBuffer);
             add_flattenable(desc2, kPathEffect_SkDescriptorTag, &peBuffer);
diff --git a/src/core/SkPaintOptionsAndroid.cpp b/src/core/SkPaintOptionsAndroid.cpp
new file mode 100644
index 0000000000..7bf6fc44cd
--- /dev/null
+++ b/src/core/SkPaintOptionsAndroid.cpp
@@ -0,0 +1,42 @@
+
+/*
+ * Copyright 2012 The Android Open Source Project
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifdef SK_BUILD_FOR_ANDROID
+
+#include "SkPaintOptionsAndroid.h"
+#include "SkFlattenableBuffers.h"
+#include "SkTDict.h"
+#include "SkThread.h"
+#include <cstring>
+
+SkLanguage SkLanguage::getParent() const {
+    SkASSERT(!fTag.isEmpty());
+    const char* tag = fTag.c_str();
+
+    // strip off the rightmost "-.*"
+    char* parentTagEnd = strrchr(tag, '-');
+    if (parentTagEnd == NULL) {
+        return SkLanguage();
+    }
+    size_t parentTagLen = parentTagEnd - tag;
+    return SkLanguage(tag, parentTagLen);
+}
+
+void SkPaintOptionsAndroid::flatten(SkFlattenableWriteBuffer& buffer) const {
+    buffer.writeUInt(fFontVariant);
+    buffer.writeString(fLanguage.getTag().c_str());
+}
+
+void SkPaintOptionsAndroid::unflatten(SkFlattenableReadBuffer& buffer) {
+    fFontVariant = (FontVariant)buffer.readUInt();
+    char* tag = buffer.readString();
+    fLanguage = SkLanguage(tag);
+    sk_free(tag);
+}
+
+#endif
diff --git a/src/core/SkScalerContext.cpp b/src/core/SkScalerContext.cpp
index ba14908c2e..1f71bf0885 100644
--- a/src/core/SkScalerContext.cpp
+++ b/src/core/SkScalerContext.cpp
@@ -110,6 +110,15 @@ SkScalerContext::SkScalerContext(SkTypeface* typeface, const SkDescriptor* desc)
              desc->findEntry(kPathEffect_SkDescriptorTag, NULL),
         desc->findEntry(kMaskFilter_SkDescriptorTag, NULL));
 #endif
+#ifdef SK_BUILD_FOR_ANDROID
+    uint32_t len;
+    const void* data = desc->findEntry(kAndroidOpts_SkDescriptorTag, &len);
+    if (data) {
+        SkOrderedReadBuffer buffer(data, len);
+        fPaintOptionsAndroid.unflatten(buffer);
+        SkASSERT(buffer.offset() == buffer.size());
+    }
+#endif
 }
 
 SkScalerContext::~SkScalerContext() {
@@ -125,7 +134,8 @@ SkScalerContext::~SkScalerContext() {
 SkScalerContext* SkScalerContext::allocNextContext() const {
 #ifdef SK_BUILD_FOR_ANDROID
     SkTypeface* newFace = SkAndroidNextLogicalTypeface(fRec.fFontID,
-                                                       fRec.fOrigFontID);
+                                                       fRec.fOrigFontID,
+                                                       fPaintOptionsAndroid);
     if (0 == newFace) {
         return NULL;
     }
diff --git a/src/core/SkScalerContext.h b/src/core/SkScalerContext.h
index d17b423496..06f5f94e17 100644
--- a/src/core/SkScalerContext.h
+++ b/src/core/SkScalerContext.h
@@ -14,6 +14,10 @@
 #include "SkPaint.h"
 #include "SkTypeface.h"
 
+#ifdef SK_BUILD_FOR_ANDROID
+    #include "SkPaintOptionsAndroid.h"
+#endif
+
 struct SkGlyph;
 class SkDescriptor;
 class SkMaskFilter;
@@ -217,6 +221,10 @@ private:
     // never null
     SkAutoTUnref<SkTypeface> fTypeface;
 
+#ifdef SK_BUILD_FOR_ANDROID
+    SkPaintOptionsAndroid fPaintOptionsAndroid;
+#endif
+
     // optional object, which may be null
     SkPathEffect*   fPathEffect;
     SkMaskFilter*   fMaskFilter;
@@ -262,6 +270,9 @@ private:
 #define kPathEffect_SkDescriptorTag     SkSetFourByteTag('p', 't', 'h', 'e')
 #define kMaskFilter_SkDescriptorTag     SkSetFourByteTag('m', 's', 'k', 'f')
 #define kRasterizer_SkDescriptorTag     SkSetFourByteTag('r', 'a', 's', 't')
+#ifdef SK_BUILD_FOR_ANDROID
+#define kAndroidOpts_SkDescriptorTag    SkSetFourByteTag('a', 'n', 'd', 'r')
+#endif
 
 ///////////////////////////////////////////////////////////////////////////////
 
diff --git a/src/ports/SkFontHost_android.cpp b/src/ports/SkFontHost_android.cpp
index ce478def6b..aeeec953d3 100644
--- a/src/ports/SkFontHost_android.cpp
+++ b/src/ports/SkFontHost_android.cpp
@@ -801,15 +801,15 @@ SkTypeface* SkFontHost::CreateTypeface(const SkTypeface* familyFace,
     return tf;
 }
 
-SkTypeface* SkAndroidNextLogicalTypeface(SkFontID currFontID,
-                                         SkFontID origFontID) {
-#if defined(SK_BUILD_FOR_ANDROID) && !defined(SK_BUILD_FOR_ANDROID_FRAMEWORK)
+SkTypeface* SkAndroidNextLogicalTypeface(SkFontID currFontID, SkFontID origFontID,
+                                         const SkPaintOptionsAndroid& options) {
+#if !defined(SK_BUILD_FOR_ANDROID_FRAMEWORK)
     // Skia does not support font fallback for ndk applications in order to
     // enable clients such as WebKit to customize their font selection.
     // Clients can use GetFallbackFamilyNameForChar() to get the fallback
     // font for individual characters.
     return NULL;
-#else
+#endif
     SkAutoMutexAcquire  ac(gFamilyHeadAndNameListMutex);
 
     load_system_fonts();
@@ -845,7 +845,6 @@ SkTypeface* SkAndroidNextLogicalTypeface(SkFontID currFontID,
     // i.e. gFallbackFonts[0] != 0.
     const SkTypeface* firstTypeface = find_from_uniqueID(list[0]);
     return SkRef(find_typeface(firstTypeface, origTypeface->style()));
-#endif
 }
 
 ///////////////////////////////////////////////////////////////////////////////