Emulate replace clip ops using SkAndroidFrameworkUtils::ResetClip

At the JNI bridge, Region::Op::kReplace_Op is detected and sent
to new functions on Canvas.h -> emulateReplaceClip[Rect|Path].
The SkiaCanvas implementation calls
SkAndroidFrameworkUtils::ResetClip to turn the SkCanvas' clip
wide open (modulo the device clip restriction), followed by
an intersect op with the actual clip geometry.

SkiaCanvas is also updated to record the replace ops in its
Clip struct for partial saves.

This should result in no visible behavioral change at the Java
Canvas level, but allows the removal of the
SK_SUPPORT_DEPRECATED_CLIPOPS flag.

Test: Updated SkiaPipeline.clip_replace unit test to use the new
  emulateReplaceClipRect function instead of SkClipOp::kReplace.
  Builds and recently added CTS tests for clip ops pass.
Bug: b/151725198
Bug: b/143352151
Change-Id: I8fb8765b4ead92bbe8eceadb52710a5673b6cf6b

1 files changed, 16 insertions, 0 deletions

diff --git a/libs/hwui/SkiaCanvas.cpp b/libs/hwui/SkiaCanvas.cpp
index d6b6e162757c..53c6db0cdf3a 100644
--- a/libs/hwui/SkiaCanvas.cpp
+++ b/libs/hwui/SkiaCanvas.cpp
@@ -396,6 +396,22 @@ bool SkiaCanvas::clipPath(const SkPath* path, SkClipOp op) {
     return !mCanvas->isClipEmpty();
 }
 
+bool SkiaCanvas::replaceClipRect_deprecated(float left, float top, float right, float bottom) {
+    SkRect rect = SkRect::MakeLTRB(left, top, right, bottom);
+
+    // Emulated clip rects are not recorded for partial saves, since
+    // partial saves have been removed from the public API.
+    SkAndroidFrameworkUtils::ResetClip(mCanvas);
+    mCanvas->clipRect(rect, SkClipOp::kIntersect);
+    return !mCanvas->isClipEmpty();
+}
+
+bool SkiaCanvas::replaceClipPath_deprecated(const SkPath* path) {
+    SkAndroidFrameworkUtils::ResetClip(mCanvas);
+    mCanvas->clipPath(*path, SkClipOp::kIntersect, true);
+    return !mCanvas->isClipEmpty();
+}
+
 // ----------------------------------------------------------------------------
 // Canvas state operations: Filters
 // ----------------------------------------------------------------------------