From 3c07e21b71fd3b41827531d425b5787652542fb9 Mon Sep 17 00:00:00 2001
From: Seigo Nonaka <nona@google.com>
Date: Fri, 23 Aug 2024 16:56:56 +0900
Subject: Use run based APIs for iterating fonts

Bug: 361260253
Test: TreeHugger
Flag: com.android.text.flags.typeface_redesign
Change-Id: I364c32a19680f4eb0dd992282f13ff2733078bf9
---
 libs/hwui/FeatureFlags.h      |  9 ++++++++
 libs/hwui/hwui/MinikinUtils.h | 49 +++++++++++++++++++++++++++++--------------
 2 files changed, 42 insertions(+), 16 deletions(-)

(limited to 'libs')

diff --git a/libs/hwui/FeatureFlags.h b/libs/hwui/FeatureFlags.h
index ac75c077b58f..c1c30f5379ab 100644
--- a/libs/hwui/FeatureFlags.h
+++ b/libs/hwui/FeatureFlags.h
@@ -49,6 +49,15 @@ inline bool letter_spacing_justification() {
 #endif  // __ANDROID__
 }
 
+inline bool typeface_redesign() {
+#ifdef __ANDROID__
+    static bool flag = com_android_text_flags_typeface_redesign();
+    return flag;
+#else
+    return true;
+#endif  // __ANDROID__
+}
+
 }  // namespace text_feature
 
 }  // namespace android
diff --git a/libs/hwui/hwui/MinikinUtils.h b/libs/hwui/hwui/MinikinUtils.h
index f8574ee50525..1510ce1378d8 100644
--- a/libs/hwui/hwui/MinikinUtils.h
+++ b/libs/hwui/hwui/MinikinUtils.h
@@ -27,6 +27,8 @@
 #include <cutils/compiler.h>
 #include <log/log.h>
 #include <minikin/Layout.h>
+
+#include "FeatureFlags.h"
 #include "MinikinSkia.h"
 #include "Paint.h"
 #include "Typeface.h"
@@ -71,27 +73,42 @@ public:
     static void forFontRun(const minikin::Layout& layout, Paint* paint, F& f) {
         float saveSkewX = paint->getSkFont().getSkewX();
         bool savefakeBold = paint->getSkFont().isEmbolden();
-        const minikin::MinikinFont* curFont = nullptr;
-        size_t start = 0;
-        size_t nGlyphs = layout.nGlyphs();
-        for (size_t i = 0; i < nGlyphs; i++) {
-            const minikin::MinikinFont* nextFont = layout.typeface(i).get();
-            if (i > 0 && nextFont != curFont) {
+        if (text_feature::typeface_redesign()) {
+            for (uint32_t runIdx = 0; runIdx < layout.getFontRunCount(); ++runIdx) {
+                uint32_t start = layout.getFontRunStart(runIdx);
+                uint32_t end = layout.getFontRunEnd(runIdx);
+                const minikin::FakedFont& fakedFont = layout.getFontRunFont(runIdx);
+
+                std::shared_ptr<minikin::MinikinFont> font = fakedFont.typeface();
+                SkFont* skfont = &paint->getSkFont();
+                MinikinFontSkia::populateSkFont(skfont, font.get(), fakedFont.fakery);
+                f(start, end);
+                skfont->setSkewX(saveSkewX);
+                skfont->setEmbolden(savefakeBold);
+            }
+        } else {
+            const minikin::MinikinFont* curFont = nullptr;
+            size_t start = 0;
+            size_t nGlyphs = layout.nGlyphs();
+            for (size_t i = 0; i < nGlyphs; i++) {
+                const minikin::MinikinFont* nextFont = layout.typeface(i).get();
+                if (i > 0 && nextFont != curFont) {
+                    SkFont* skfont = &paint->getSkFont();
+                    MinikinFontSkia::populateSkFont(skfont, curFont, layout.getFakery(start));
+                    f(start, i);
+                    skfont->setSkewX(saveSkewX);
+                    skfont->setEmbolden(savefakeBold);
+                    start = i;
+                }
+                curFont = nextFont;
+            }
+            if (nGlyphs > start) {
                 SkFont* skfont = &paint->getSkFont();
                 MinikinFontSkia::populateSkFont(skfont, curFont, layout.getFakery(start));
-                f(start, i);
+                f(start, nGlyphs);
                 skfont->setSkewX(saveSkewX);
                 skfont->setEmbolden(savefakeBold);
-                start = i;
             }
-            curFont = nextFont;
-        }
-        if (nGlyphs > start) {
-            SkFont* skfont = &paint->getSkFont();
-            MinikinFontSkia::populateSkFont(skfont, curFont, layout.getFakery(start));
-            f(start, nGlyphs);
-            skfont->setSkewX(saveSkewX);
-            skfont->setEmbolden(savefakeBold);
         }
     }
 };
-- 
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