Initial change to move text blob to GrTextContext
BUG=skia:
Review URL: https://codereview.chromium.org/1019633002
diff --git a/src/gpu/GrTextContext.cpp b/src/gpu/GrTextContext.cpp
index 28e10e3..d4c0171 100644
--- a/src/gpu/GrTextContext.cpp
+++ b/src/gpu/GrTextContext.cpp
@@ -11,9 +11,11 @@
#include "GrFontScaler.h"
#include "SkAutoKern.h"
+#include "SkDrawFilter.h"
#include "SkDrawProcs.h"
#include "SkGlyphCache.h"
#include "SkGpuDevice.h"
+#include "SkTextBlob.h"
#include "SkTextMapStateProc.h"
#include "SkTextToPathIter.h"
@@ -91,6 +93,25 @@
clipBounds);
}
+void GrTextContext::drawTextBlob(GrRenderTarget* rt, const GrClip& clip, const SkPaint& skPaint,
+ const SkMatrix& viewMatrix, const SkTextBlob* blob,
+ SkScalar x, SkScalar y,
+ SkDrawFilter* drawFilter, const SkIRect& clipBounds) {
+ if (!fContext->getTextTarget()) {
+ return;
+ }
+
+ GrTextContext* textContext = this;
+ do {
+ if (textContext->canDraw(skPaint, viewMatrix)) {
+ textContext->onDrawTextBlob(rt, clip, skPaint, viewMatrix, blob, x, y, drawFilter,
+ clipBounds);
+ return;
+ }
+ textContext = textContext->fFallbackTextContext;
+ } while (textContext);
+}
+
void GrTextContext::drawTextAsPath(const SkPaint& skPaint, const SkMatrix& viewMatrix,
const char text[], size_t byteLength, SkScalar x, SkScalar y,
const SkIRect& clipBounds) {
@@ -159,6 +180,55 @@
}
}
+void GrTextContext::onDrawTextBlob(GrRenderTarget* rt, const GrClip& clip,
+ const SkPaint& skPaint, const SkMatrix& viewMatrix,
+ const SkTextBlob* blob, SkScalar x, SkScalar y,
+ SkDrawFilter* drawFilter, const SkIRect& clipBounds) {
+ SkPaint runPaint = skPaint;
+
+ SkTextBlob::RunIterator it(blob);
+ for (;!it.done(); it.next()) {
+ size_t textLen = it.glyphCount() * sizeof(uint16_t);
+ const SkPoint& offset = it.offset();
+ // applyFontToPaint() always overwrites the exact same attributes,
+ // so it is safe to not re-seed the paint for this reason.
+ it.applyFontToPaint(&runPaint);
+
+ if (drawFilter && !drawFilter->filter(&runPaint, SkDrawFilter::kText_Type)) {
+ // A false return from filter() means we should abort the current draw.
+ runPaint = skPaint;
+ continue;
+ }
+
+ runPaint.setFlags(fGpuDevice->filterTextFlags(runPaint));
+
+ GrPaint grPaint;
+ SkPaint2GrPaintShader(fContext, fRenderTarget, runPaint, viewMatrix, true, &grPaint);
+
+ switch (it.positioning()) {
+ case SkTextBlob::kDefault_Positioning:
+ this->drawText(rt, clip, grPaint, runPaint, viewMatrix, (const char *)it.glyphs(),
+ textLen, x + offset.x(), y + offset.y(), clipBounds);
+ break;
+ case SkTextBlob::kHorizontal_Positioning:
+ this->drawPosText(rt, clip, grPaint, runPaint, viewMatrix, (const char*)it.glyphs(),
+ textLen, it.pos(), 1, SkPoint::Make(x, y + offset.y()), clipBounds);
+ break;
+ case SkTextBlob::kFull_Positioning:
+ this->drawPosText(rt, clip, grPaint, runPaint, viewMatrix, (const char*)it.glyphs(),
+ textLen, it.pos(), 2, SkPoint::Make(x, y), clipBounds);
+ break;
+ default:
+ SkFAIL("unhandled positioning mode");
+ }
+
+ if (drawFilter) {
+ // A draw filter may change the paint arbitrarily, so we must re-seed in this case.
+ runPaint = skPaint;
+ }
+ }
+}
+
//*** change to output positions?
int GrTextContext::MeasureText(SkGlyphCache* cache, SkDrawCacheProc glyphCacheProc,
const char text[], size_t byteLength, SkVector* stopVector) {