Add secret draw-behind method
This is a variant of drawPaint but is automatically clipped
to the bounds of the most recent saveBehind buffer (axis-aligned bounds).
No public exposure.
Impl is pretty simple (its a variant of drawPaint)
- find the most recent saveBehind device bounds
- if there is none, draw nothing, else
- temporarily intersect the device's clip with that bounds
- drawPaint
- restore the clip
See https://buganizer.corp.google.com/issues/129117085
Change-Id: I7c532e63a80b118fb2416c572b8e0d2abf8cf59a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209166
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
diff --git a/tools/debugger/DrawCommand.cpp b/tools/debugger/DrawCommand.cpp
index f8dd5e7..b3cce66 100644
--- a/tools/debugger/DrawCommand.cpp
+++ b/tools/debugger/DrawCommand.cpp
@@ -1574,6 +1574,26 @@
MakeJsonPaint(writer, fPaint, urlDataManager);
}
+DrawBehindCommand::DrawBehindCommand(const SkPaint& paint) : INHERITED(kDrawPaint_OpType) {
+ fPaint = paint;
+}
+
+void DrawBehindCommand::execute(SkCanvas* canvas) const {
+ SkCanvasPriv::DrawBehind(canvas, fPaint);
+}
+
+bool DrawBehindCommand::render(SkCanvas* canvas) const {
+ canvas->clear(0xFFFFFFFF);
+ SkCanvasPriv::DrawBehind(canvas, fPaint);
+ return true;
+}
+
+void DrawBehindCommand::toJSON(SkJSONWriter& writer, UrlDataManager& urlDataManager) const {
+ INHERITED::toJSON(writer, urlDataManager);
+ writer.appendName(DEBUGCANVAS_ATTRIBUTE_PAINT);
+ MakeJsonPaint(writer, fPaint, urlDataManager);
+}
+
DrawPathCommand::DrawPathCommand(const SkPath& path, const SkPaint& paint)
: INHERITED(kDrawPath_OpType) {
fPath = path;