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// Copyright 2019 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#ifndef SkottieMtkView_DEFINED
#define SkottieMtkView_DEFINED
#import <MetalKit/MetalKit.h>
#import <UIKit/UIKit.h>
class GrContext;
@interface SkottieMtkView : MTKView
// Must be set to a Metal-backed GrContext in order to draw.
// e.g.: use SkMetalDeviceToGrContext().
@property (assign) GrContext* grContext; // non-owning pointer.
// Must be set to a valid MTLCommandQueue. Will be used to present.
@property (assign) id<MTLCommandQueue> queue; // non-owning pointer.
// When set, pauses at end of loop.
@property (assign) BOOL stopAtEnd;
// Override of the MTKView interface. Uses Skia+Skottie+Metal to draw.
- (void)drawRect:(CGRect)rect;
// Load an animation from a Lottie JSON file. Returns Yes on success.
- (BOOL)loadAnimation:(NSData*)d;
// Jump to the specified location in the animation.
- (void)seek:(float)seconds;
// Toggle paused mode. Return paused state.
- (BOOL)togglePaused;
// Return the current paused state.
- (BOOL)isPaused;
// Return the default size of the Lottie animation.
- (CGSize)size;
// Return the length of the animation loop.
- (float)animationDurationSeconds;
// Return the current position in the animation in seconds (between zero and
// animationDurationSeconds).
- (float)currentTime;
#endif // SkottieMtkView_DEFINED