SkRecord: make culling work if SkRecordAnnotateCullingPairs is called.
- Allow stateful functors; allow visit()/mutate() at a given index; add count().
- Annotate cull push/pop pairs on the PushCull records. (tested)
- Use those annotations to skip ahead in SkRecordDraw. (not yet tested beyond dm --skr)
- Make SkRecordDraw a function, move its implementation to a .cpp.
BUG=skia:2378
R=fmalita@chromium.org, mtklein@google.com
Author: mtklein@chromium.org
Review URL: https://codereview.chromium.org/229523002
git-svn-id: http://skia.googlecode.com/svn/trunk@14101 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/record/SkRecordDraw.cpp b/src/record/SkRecordDraw.cpp
new file mode 100644
index 0000000..66b48a3
--- /dev/null
+++ b/src/record/SkRecordDraw.cpp
@@ -0,0 +1,78 @@
+#include "SkRecordDraw.h"
+
+namespace {
+
+// This is an SkRecord visitor that will draw that SkRecord to an SkCanvas.
+struct Draw {
+ unsigned index;
+ SkCanvas* canvas;
+
+ // No base case, so we'll be compile-time checked that we implemented all possibilities below.
+ template <typename T> void operator()(const T&);
+};
+
+template <> void Draw::operator()(const SkRecords::PushCull& pushCull) {
+ if (pushCull.popOffset != SkRecords::kUnsetPopOffset &&
+ canvas->quickReject(pushCull.rect)) {
+ // We skip to the popCull, then the loop moves us just beyond it.
+ index += pushCull.popOffset;
+ } else {
+ canvas->pushCull(pushCull.rect);
+ }
+}
+
+// Nothing fancy below here.
+
+#define CASE(T) template <> void Draw::operator()(const SkRecords::T& r)
+
+CASE(Restore) { canvas->restore(); }
+CASE(Save) { canvas->save(r.flags); }
+CASE(SaveLayer) { canvas->saveLayer(r.bounds, r.paint, r.flags); }
+
+CASE(PopCull) { canvas->popCull(); }
+
+CASE(Concat) { canvas->concat(r.matrix); }
+CASE(SetMatrix) { canvas->setMatrix(r.matrix); }
+
+CASE(ClipPath) { canvas->clipPath(r.path, r.op, r.doAA); }
+CASE(ClipRRect) { canvas->clipRRect(r.rrect, r.op, r.doAA); }
+CASE(ClipRect) { canvas->clipRect(r.rect, r.op, r.doAA); }
+CASE(ClipRegion) { canvas->clipRegion(r.region, r.op); }
+
+CASE(Clear) { canvas->clear(r.color); }
+CASE(DrawBitmap) { canvas->drawBitmap(r.bitmap, r.left, r.top, r.paint); }
+CASE(DrawBitmapMatrix) { canvas->drawBitmapMatrix(r.bitmap, r.matrix, r.paint); }
+CASE(DrawBitmapNine) { canvas->drawBitmapNine(r.bitmap, r.center, r.dst, r.paint); }
+CASE(DrawBitmapRectToRect) {
+ canvas->drawBitmapRectToRect(r.bitmap, r.src, r.dst, r.paint, r.flags);
+}
+CASE(DrawDRRect) { canvas->drawDRRect(r.outer, r.inner, r.paint); }
+CASE(DrawOval) { canvas->drawOval(r.oval, r.paint); }
+CASE(DrawPaint) { canvas->drawPaint(r.paint); }
+CASE(DrawPath) { canvas->drawPath(r.path, r.paint); }
+CASE(DrawPoints) { canvas->drawPoints(r.mode, r.count, r.pts, r.paint); }
+CASE(DrawPosText) { canvas->drawPosText(r.text, r.byteLength, r.pos, r.paint); }
+CASE(DrawPosTextH) { canvas->drawPosTextH(r.text, r.byteLength, r.xpos, r.y, r.paint); }
+CASE(DrawRRect) { canvas->drawRRect(r.rrect, r.paint); }
+CASE(DrawRect) { canvas->drawRect(r.rect, r.paint); }
+CASE(DrawSprite) { canvas->drawSprite(r.bitmap, r.left, r.top, r.paint); }
+CASE(DrawText) { canvas->drawText(r.text, r.byteLength, r.x, r.y, r.paint); }
+CASE(DrawTextOnPath) { canvas->drawTextOnPath(r.text, r.byteLength, r.path, r.matrix, r.paint); }
+CASE(DrawVertices) {
+ canvas->drawVertices(r.vmode, r.vertexCount, r.vertices, r.texs, r.colors,
+ r.xmode.get(), r.indices, r.indexCount, r.paint);
+}
+#undef CASE
+
+} // namespace
+
+void SkRecordDraw(const SkRecord& record, SkCanvas* canvas) {
+ Draw draw;
+ draw.canvas = canvas;
+
+ for (draw.index = 0; draw.index < record.count(); draw.index++) {
+ record.visit(draw.index, draw);
+ }
+}
+
+