add skotty-dir slide

Shows a directory of skotties in a grid

Bug: skia:
Change-Id: I96b0700d8809c94a394cf517222123967afb20dc
Reviewed-on: https://skia-review.googlesource.com/91407
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>

2 files changed, 9 insertions, 2 deletions

diff --git a/experimental/skotty/Skotty.cpp b/experimental/skotty/Skotty.cpp
index a13a04c03c..84cc08051f 100644
--- a/experimental/skotty/Skotty.cpp
+++ b/experimental/skotty/Skotty.cpp
@@ -752,7 +752,7 @@ Animation::Animation(SkString version, const SkSize& size, SkScalar fps, const J
 
 Animation::~Animation() = default;
 
-void Animation::render(SkCanvas* canvas) const {
+void Animation::render(SkCanvas* canvas, const SkRect* dstR) const {
     if (!fDom)
         return;
 
@@ -760,6 +760,12 @@ void Animation::render(SkCanvas* canvas) const {
     fDom->revalidate(&ic, SkMatrix::I());
 
     // TODO: proper inval
+    SkAutoCanvasRestore restore(canvas, true);
+    const SkRect srcR = SkRect::MakeSize(this->size());
+    if (dstR) {
+        canvas->concat(SkMatrix::MakeRectToRect(srcR, *dstR, SkMatrix::kCenter_ScaleToFit));
+    }
+    canvas->clipRect(srcR);
     fDom->render(canvas);
 
     if (!fShowInval)
diff --git a/experimental/skotty/Skotty.h b/experimental/skotty/Skotty.h
index c20feeb093..d02dc8d3ab 100644
--- a/experimental/skotty/Skotty.h
+++ b/experimental/skotty/Skotty.h
@@ -18,6 +18,7 @@
 #include <memory>
 
 class SkCanvas;
+struct SkRect;
 class SkStream;
 
 namespace Json { class Value; }
@@ -34,7 +35,7 @@ public:
 
     ~Animation();
 
-    void render(SkCanvas*) const;
+    void render(SkCanvas*, const SkRect* dst = nullptr) const;
 
     void animationTick(SkMSec);