Introduce text blob processing but don't wire it up

Have all the old code paths start using lists in preparation
for introducing text blobs.

Change-Id: I65cc02ee3da63bc3c9492db78a08b0eee3b1f931
Reviewed-on: https://skia-review.googlesource.com/141081
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Herb Derby <herb@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/tests/GlyphRunTest.cpp b/tests/GlyphRunTest.cpp
index b87edc7731..49d7340aca 100644
--- a/tests/GlyphRunTest.cpp
+++ b/tests/GlyphRunTest.cpp
@@ -49,3 +49,57 @@ DEF_TEST(GlyphRunBasic, reporter) {
     SkGlyphRunBuilder builder;
     builder.drawText(paint, glyphs, count, SkPoint::Make(0, 0));
 }
+
+DEF_TEST(GlyphRunBlob, reporter) {
+    constexpr uint16_t count = 5;
+    constexpr int runCount = 2;
+
+    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;
+    for (int runNum = 0; runNum < runCount; runNum++) {
+        const auto& runBuffer = blobBuilder.allocRunPosH(font, count, runNum);
+        SkASSERT(runBuffer.utf8text == nullptr);
+        SkASSERT(runBuffer.clusters == nullptr);
+
+        for (int i = 0; i < count; i++) {
+            runBuffer.glyphs[i] = static_cast<SkGlyphID>(i + runNum * count);
+            runBuffer.pos[i] = SkIntToScalar(i + runNum * count);
+        }
+    }
+
+    auto blob = blobBuilder.make();
+
+    SkPaint paint;
+    paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
+
+    SkGlyphRunBuilder runBuilder;
+    runBuilder.drawTextBlob(font, *blob, SkPoint::Make(0, 0));
+
+    auto runList = runBuilder.useGlyphRunList();
+
+    REPORTER_ASSERT(reporter, runList->size() == runCount);
+    int runIndex = 0;
+    for (auto& run : *runList) {
+        REPORTER_ASSERT(reporter, run.runSize() == count);
+
+        int index = 0;
+        for (auto p : run.positions()) {
+            if (p.x() != runIndex * count + index) {
+                ERRORF(reporter, "x: %g != k: %d", p.x(), runIndex * count + index);
+                break;
+            }
+            index += 1;
+        }
+
+        runIndex += 1;
+    }
+}