Add an avoidXfermode GM to exercise coverage
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1663133003
Review URL: https://codereview.chromium.org/1663133003
diff --git a/gm/avoidxfermode3.cpp b/gm/avoidxfermode3.cpp
new file mode 100644
index 0000000..c88b2a2
--- /dev/null
+++ b/gm/avoidxfermode3.cpp
@@ -0,0 +1,90 @@
+/*
+* Copyright 2016 Google Inc.
+*
+* Use of this source code is governed by a BSD-style license that can be
+* found in the LICENSE file.
+*/
+
+#include "gm.h"
+
+#include "SkAvoidXfermode.h"
+
+// This GM exercises how the avoid xfer mode interacts with partial coverage
+class AvoidXfermode3GM : public skiagm::GM {
+public:
+ AvoidXfermode3GM() { }
+
+protected:
+ SkString onShortName() override {
+ return SkString("avoidxfermode3");
+ }
+
+ SkISize onISize() override { return SkISize::Make(128, 128); }
+
+ void onDraw(SkCanvas* canvas) override {
+ canvas->drawARGB(255, 0, 0, 0);
+
+ SkRect r = SkRect::MakeXYWH(16.5f, 16.5f, 96.0f, 96.0f);
+
+ SkPaint p0;
+ p0.setColor(SK_ColorWHITE);
+ p0.setAntiAlias(true);
+
+ canvas->drawRect(r, p0);
+
+ r = SkRect::MakeXYWH(3.5f, 3.5f, 59.0f, 59.0f);
+
+ // UL corner: replace white with green with a tight tolerance
+ SkPaint p1;
+ p1.setColor(SK_ColorGREEN);
+ p1.setAntiAlias(true);
+ p1.setXfermode(SkAvoidXfermode::Create(SK_ColorWHITE,
+ 5,
+ SkAvoidXfermode::kTargetColor_Mode))->unref();
+
+ canvas->drawRect(r, p1);
+
+ r.offsetTo(65.5f, 3.5f);
+
+ // UR corner: draw red everywhere except white with a tight tolerance
+ SkPaint p2;
+ p2.setColor(SK_ColorRED);
+ p2.setAntiAlias(true);
+ p2.setXfermode(SkAvoidXfermode::Create(SK_ColorWHITE,
+ 250,
+ SkAvoidXfermode::kAvoidColor_Mode))->unref();
+
+ canvas->drawRect(r, p2);
+
+ r.offsetTo(3.5f, 65.5f);
+
+ // LL corner: replace white with blue with a loose tolerance
+ SkPaint p3;
+ p3.setColor(SK_ColorBLUE);
+ p3.setAntiAlias(true);
+ p3.setXfermode(SkAvoidXfermode::Create(SK_ColorWHITE,
+ 250,
+ SkAvoidXfermode::kTargetColor_Mode))->unref();
+
+ canvas->drawRect(r, p3);
+
+ r.offsetTo(65.5f, 65.5f);
+
+ // LR corner: draw yellow everywhere except white with a loose tolerance
+ SkPaint p4;
+ p4.setColor(SK_ColorYELLOW);
+ p4.setAntiAlias(true);
+ p4.setXfermode(SkAvoidXfermode::Create(SK_ColorWHITE,
+ 5,
+ SkAvoidXfermode::kAvoidColor_Mode))->unref();
+
+ canvas->drawRect(r, p4);
+ }
+
+private:
+ typedef GM INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+DEF_GM(return new AvoidXfermode3GM;)