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79 lines
2.9 KiB
Objective-C
79 lines
2.9 KiB
Objective-C
//
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// CSOpenGLView.h
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// Clock Signal
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//
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// Created by Thomas Harte on 16/07/2015.
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// Copyright © 2015 Thomas Harte. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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#import <AppKit/AppKit.h>
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@class CSOpenGLView;
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@protocol CSOpenGLViewDelegate
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/*!
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Tells the delegate that time has advanced.
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@param view The view sending the message.
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@param time The time to which time has advanced.
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@param didSkipPreviousUpdate @c YES if the previous update that would have occurred was skipped because a didUpdateToTime: call prior to that was still ongoing; @c NO otherwise.
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*/
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- (void)openGLView:(nonnull CSOpenGLView *)view didUpdateToTime:(CVTimeStamp)time didSkipPreviousUpdate:(BOOL)didSkipPreviousUpdate frequency:(double)frequency;
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/*!
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Requests that the delegate produce an image of its current output state. May be called on
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any queue or thread.
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@param view The view makin the request.
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@param onlyIfDirty If @c YES then the delegate may decline to redraw if its output would be
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identical to the previous frame. If @c NO then the delegate must draw.
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*/
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- (void)openGLView:(nonnull CSOpenGLView *)view drawViewOnlyIfDirty:(BOOL)onlyIfDirty;
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@end
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@protocol CSOpenGLViewResponderDelegate <NSObject>
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/*!
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Supplies a keyDown event to the delegate. Will always be called on the same queue as the other
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@c CSOpenGLViewResponderDelegate methods and as -[CSOpenGLViewDelegate openGLView:didUpdateToTime:].
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@param event The @c NSEvent describing the keyDown.
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*/
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- (void)keyDown:(nonnull NSEvent *)event;
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/*!
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Supplies a keyUp event to the delegate. Will always be called on the same queue as the other
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@c CSOpenGLViewResponderDelegate methods and as -[CSOpenGLViewDelegate openGLView:didUpdateToTime:].
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@param event The @c NSEvent describing the keyUp.
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*/
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- (void)keyUp:(nonnull NSEvent *)event;
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/*!
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Supplies a flagsChanged event to the delegate. Will always be called on the same queue as the other
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@c CSOpenGLViewResponderDelegate methods and as -[CSOpenGLViewDelegate openGLView:didUpdateToTime:].
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@param event The @c NSEvent describing the flagsChanged.
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*/
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- (void)flagsChanged:(nonnull NSEvent *)newModifiers;
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@end
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/*!
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Provides an OpenGL canvas with a refresh-linked update timer and manages a serial dispatch queue
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such that a delegate may produce video and respond to keyboard events.
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*/
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@interface CSOpenGLView : NSOpenGLView
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@property (nonatomic, weak) id <CSOpenGLViewDelegate> delegate;
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@property (nonatomic, weak) id <CSOpenGLViewResponderDelegate> responderDelegate;
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/*!
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Ends the timer tracking time; should be called prior to giving up the last owning reference
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to ensure that any retain cycles implied by the timer are resolved.
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*/
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- (void)invalidate;
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/// The size in pixels of the OpenGL canvas, factoring in screen pixel density and view size in points.
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@property (nonatomic, readonly) CGSize backingSize;
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- (void)performWithGLContext:(nonnull dispatch_block_t)action;
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@end
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