OFCanvas.h

/*
 * Copyright (c) 2008-2026 Jonathan Schleifer <js@nil.im>
 *
 * All rights reserved.
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version 3.0 only,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
 * version 3.0 for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3.0 along with this program. If not, see
 * <https://www.gnu.org/licenses/>.
 */
 
#import "OFObject.h"
#import "OFImage.h"
 
OF_ASSUME_NONNULL_BEGIN

@protocol OFCanvas <OFObject>
@property (retain, nonatomic) OFColor *backgroundColor;

- (void)clearRect: (OFRect)rect;

- (void)drawImage: (OFImage *)image
       sourceRect: (OFRect)sourceRect
  destinationRect: (OFRect)destinationRect;
@end

OF_SUBCLASSING_RESTRICTED
@interface OFCanvas: OFObject <OFCanvas>
{
    OFMutableImage *_destinationImage;
    size_t _width;
    OFRect _rect;
    void *_pixels;
    OFPixelFormat _pixelFormat;
    OFColor *_backgroundColor;
}

+ (instancetype)canvasWithDestinationImage: (OFMutableImage *)image;
 
- (instancetype)init OF_UNAVAILABLE;

- (instancetype)initWithDestinationImage: (OFMutableImage *)image;
@end
 
OF_ASSUME_NONNULL_END