Add SkGlyphRunList

Extend the glyph run system with a glyph run list. This
allows the processing of text blobs.

Add original text an cluster to runs for PDF.

Change-Id: If4867d000e45f8975a30e982fc8fdbe104ef4332
Reviewed-on: https://skia-review.googlesource.com/135627
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Herb Derby <herb@google.com>

1 files changed, 45 insertions, 1 deletions

diff --git a/tests/GlyphRunTest.cpp b/tests/GlyphRunTest.cpp
index 3b25625a7a..9dc5b55978 100644
--- a/tests/GlyphRunTest.cpp
+++ b/tests/GlyphRunTest.cpp
@@ -7,9 +7,11 @@
 
 #include "SkGlyphRun.h"
 
+#include "SkTextBlob.h"
+
 #include "Test.h"
 
-DEF_TEST(GlyphRunInfo, reporter) {
+DEF_TEST(GlyphRunBasic, reporter) {
     SkGlyphID glyphs[] = {100, 3, 240, 3, 234, 111, 3, 4, 10, 11};
     uint16_t count = SK_ARRAY_COUNT(glyphs);
 
@@ -18,5 +20,47 @@ DEF_TEST(GlyphRunInfo, reporter) {
 
     SkGlyphRunBuilder builder;
     builder.prepareDrawText(paint, glyphs, count, SkPoint::Make(0, 0));
+}
+
+DEF_TEST(GlyphRunBlob, reporter) {
+    uint16_t count = 10;
+
+    auto tf = SkTypeface::MakeFromName("monospace", SkFontStyle());
+
+    SkPaint font;
+    font.setTypeface(tf);
+    font.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
+    font.setTextAlign(SkPaint::kLeft_Align);
+    font.setStyle(SkPaint::kFill_Style);
+    font.setHinting(SkPaint::kNormal_Hinting);
+    font.setTextSize(1u);
+
+    SkTextBlobBuilder blobBuilder;
+    SkRect bounds = SkRect::MakeWH(10, 10);
+    for (int runNum = 0; runNum < 2; runNum++) {
+        const auto& runBuffer = blobBuilder.allocRunPosH(font, count, runNum, &bounds);
+        SkASSERT(runBuffer.utf8text == nullptr);
+        SkASSERT(runBuffer.clusters == nullptr);
+
+        for (int i = 0; i < count; i++) {
+            runBuffer.glyphs[i] = static_cast<SkGlyphID>(i + runNum * 10);
+            runBuffer.pos[i] = SkIntToScalar(i + runNum * 10);
+        }
+    }
+
+    auto blob = blobBuilder.make();
+
+    SkPaint paint;
+    paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
+
+    SkGlyphRunBuilder runBuilder;
+    runBuilder.prepareTextBlob(font, *blob, SkPoint::Make(0, 0));
+
+    auto runList = runBuilder.useGlyphRunList();
 
+    REPORTER_ASSERT(reporter, runList->size() == 2);
+    for (auto& run : *runList) {
+        REPORTER_ASSERT(reporter, run.runSize() == 10);
+        REPORTER_ASSERT(reporter, run.uniqueSize() == 10);
+    }
 }
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