Fix SkTextBlob offset semantics.
Implement proper x/y drawTextBlob() handling by plumbing a
drawPosText() offset parameter (to act as an additional glyph pos
translation) throughout the device layer.
The new offset superceeds the existing constY, with a minor semantic
tweak: whereas previous implementations were ignoring constY in 2D
positioning mode (scalarsPerGlyph == 2), now the offset is always
observed, in all positioning modes. We can do this because existing
drawPosText() clients always pass constY == 0 for full positioning mode.
R=reed@google.com, jvanverth@google.com, robertphillips@google.com
Review URL: https://codereview.chromium.org/605533002
diff --git a/src/gpu/SkGpuDevice.h b/src/gpu/SkGpuDevice.h
index 41b53b1..f19d2cb 100644
--- a/src/gpu/SkGpuDevice.h
+++ b/src/gpu/SkGpuDevice.h
@@ -90,8 +90,8 @@
virtual void drawText(const SkDraw&, const void* text, size_t len,
SkScalar x, SkScalar y, const SkPaint&) SK_OVERRIDE;
virtual void drawPosText(const SkDraw&, const void* text, size_t len,
- const SkScalar pos[], SkScalar constY,
- int scalarsPerPos, const SkPaint&) SK_OVERRIDE;
+ const SkScalar pos[], int scalarsPerPos,
+ const SkPoint& offset, const SkPaint&) SK_OVERRIDE;
virtual void drawTextOnPath(const SkDraw&, const void* text, size_t len,
const SkPath& path, const SkMatrix* matrix,
const SkPaint&) SK_OVERRIDE;