[skrive] Initial artboard plumbing
"Artboards" are top-level Rive containers (similar to AE compositions),
holding the scene graphics and related animations.
Artboard properties:
- name
- width/height (size)
- translation (position)
- origin (anchor point for transforms?)
- (background) color
- clip contents flag
Plumb artboard parsing + background rendering, and hook into viewer.
TBR=
Change-Id: Ib188245ce41a76197cf9e0937689adf8243826d6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/295244
Reviewed-by: Florin Malita <fmalita@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
diff --git a/tools/viewer/SkRiveSlide.cpp b/tools/viewer/SkRiveSlide.cpp
new file mode 100644
index 0000000..5be5d81
--- /dev/null
+++ b/tools/viewer/SkRiveSlide.cpp
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2020 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "tools/viewer/SkRiveSlide.h"
+
+#include "include/core/SkCanvas.h"
+#include "include/core/SkStream.h"
+
+#if defined(SK_ENABLE_SKRIVE)
+
+SkRiveSlide::SkRiveSlide(const SkString& name, const SkString& path)
+ : fPath(path) {
+ fName = name;
+}
+
+SkRiveSlide::~SkRiveSlide() = default;
+
+void SkRiveSlide::load(SkScalar w, SkScalar h) {
+ fWinSize = {w , h};
+ fRive = skrive::SkRive::Builder().make(SkFILEStream::Make(fPath.c_str()));
+ fRiveBounds = SkRect::MakeEmpty();
+
+ if (fRive) {
+ SkDebugf("Loaded Rive animation: %zu artboards\n", fRive->artboards().size());
+ for (const auto& ab : fRive->artboards()) {
+ const auto& pos = ab->getTranslation();
+ const auto& size = ab->getSize();
+
+ fRiveBounds.join(SkRect::MakeXYWH(pos.x, pos.y, size.x, size.y));
+ }
+ } else {
+ SkDebugf("Failed to load Rive animation: %s\n", fPath.c_str());
+ }
+}
+
+void SkRiveSlide::unload() {
+ fRive.reset();
+}
+
+void SkRiveSlide::resize(SkScalar w, SkScalar h) {
+ fWinSize = {w , h};
+}
+
+SkISize SkRiveSlide::getDimensions() const {
+ // We always scale to fill the window.
+ return fWinSize.toCeil();
+}
+
+void SkRiveSlide::draw(SkCanvas* canvas) {
+ if (!fRive) {
+ return;
+ }
+
+ // Scale the Rive artboards to fill our window.
+ SkAutoCanvasRestore acr(canvas, true);
+ canvas->concat(SkMatrix::MakeRectToRect(fRiveBounds,
+ SkRect::MakeSize(fWinSize),
+ SkMatrix::kCenter_ScaleToFit ));
+
+ for (const auto& ab : fRive->artboards()) {
+ ab->revalidate(nullptr, SkMatrix::I());
+ ab->render(canvas);
+ }
+}
+
+#endif // defined(SK_ENABLE_SKRIVE)