Add drop shadow for drawPosText in hwui renderer.

This patch adds support for drop shadows (setShadowLayer) for
drawPosText in the hwui renderer. In and of itself, it's not very
important, but it's on the critical path for correct mark positioning,
tracked as bug 5443796.

The change itself is fairly straightforward - it basically just adds an
extra "positions" argument to all draw and measure methods on the code
path for drawing drop shadowed text, as well as to the cache key for
cached shadow textures.

Change-Id: Ic1cb63299ba61ccbef31779459ecb82aa4a5e672

1 files changed, 3 insertions, 3 deletions

diff --git a/libs/hwui/TextDropShadowCache.cpp b/libs/hwui/TextDropShadowCache.cpp
index bef137371d44..93aa8a5c0af3 100644
--- a/libs/hwui/TextDropShadowCache.cpp
+++ b/libs/hwui/TextDropShadowCache.cpp
@@ -102,13 +102,13 @@ void TextDropShadowCache::clear() {
 }
 
 ShadowTexture* TextDropShadowCache::get(SkPaint* paint, const char* text, uint32_t len,
-        int numGlyphs, uint32_t radius) {
-    ShadowText entry(paint, radius, len, text);
+        int numGlyphs, uint32_t radius, const float* positions) {
+    ShadowText entry(paint, radius, len, text, positions);
     ShadowTexture* texture = mCache.get(entry);
 
     if (!texture) {
         FontRenderer::DropShadow shadow = mRenderer->renderDropShadow(paint, text, 0,
-                len, numGlyphs, radius);
+                len, numGlyphs, radius, positions);
 
         texture = new ShadowTexture;
         texture->left = shadow.penX;