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99 lines
3.9 KiB
Objective-C
99 lines
3.9 KiB
Objective-C
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/*
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File: ScalingScrollView.m
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Abstract: NSScrollView subclass to support scaling content.
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Version: 1.9
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Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple
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Inc. ("Apple") in consideration of your agreement to the following
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terms, and your use, installation, modification or redistribution of
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this Apple software constitutes acceptance of these terms. If you do
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not agree with these terms, please do not use, install, modify or
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redistribute this Apple software.
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In consideration of your agreement to abide by the following terms, and
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subject to these terms, Apple grants you a personal, non-exclusive
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license, under Apple's copyrights in this original Apple software (the
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"Apple Software"), to use, reproduce, modify and redistribute the Apple
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Software, with or without modifications, in source and/or binary forms;
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provided that if you redistribute the Apple Software in its entirety and
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without modifications, you must retain this notice and the following
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text and disclaimers in all such redistributions of the Apple Software.
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Neither the name, trademarks, service marks or logos of Apple Inc. may
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be used to endorse or promote products derived from the Apple Software
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without specific prior written permission from Apple. Except as
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expressly stated in this notice, no other rights or licenses, express or
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implied, are granted by Apple herein, including but not limited to any
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patent rights that may be infringed by your derivative works or by other
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works in which the Apple Software may be incorporated.
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The Apple Software is provided by Apple on an "AS IS" basis. APPLE
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MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
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THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
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OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
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IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
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MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
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AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
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STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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Copyright (C) 2013 Apple Inc. All Rights Reserved.
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*/
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#import <Cocoa/Cocoa.h>
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#import "ScalingScrollView.h"
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@implementation ScalingScrollView
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- (void)awakeFromNib {
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[super awakeFromNib];
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[self setAllowsMagnification:YES];
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[self setMaxMagnification:16.0];
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[self setMinMagnification:0.25];
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}
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- (CGFloat)scaleFactor {
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return [self magnification];
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}
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- (void)setScaleFactor:(CGFloat)newScaleFactor {
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[self setMagnification:newScaleFactor];
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}
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- (void)setScaleFactor:(CGFloat)newScaleFactor adjustPopup:(BOOL)flag {
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[self setScaleFactor:newScaleFactor];
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}
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/* Action methods
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*/
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- (IBAction)zoomToActualSize:(id)sender {
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[[self animator] setMagnification:1.0];
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}
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- (IBAction)zoomIn:(id)sender {
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CGFloat scaleFactor = [self scaleFactor];
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scaleFactor = (scaleFactor > 0.4 && scaleFactor < 0.6) ? 1.0 : scaleFactor * 2.0;
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[[self animator] setMagnification:scaleFactor];
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}
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- (IBAction)zoomOut:(id)sender {
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CGFloat scaleFactor = [self scaleFactor];
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scaleFactor = (scaleFactor > 1.8 && scaleFactor < 2.2) ? 1.0 : scaleFactor / 2.0;
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[[self animator] setMagnification:scaleFactor];
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}
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/* Reassure AppKit that ScalingScrollView supports live resize content preservation, even though it's a subclass that could have modified NSScrollView in such a way as to make NSScrollView's live resize content preservation support inoperative. By default this is disabled for NSScrollView subclasses.
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*/
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- (BOOL)preservesContentDuringLiveResize {
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return [self drawsBackground];
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}
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@end
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