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161 lines
3.5 KiB
Objective-C
161 lines
3.5 KiB
Objective-C
//
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// RSMultiLineView.m
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// RSTextDrawing
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//
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// Created by Brent Simmons on 5/27/16.
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// Copyright © 2016 Ranchero Software, LLC. All rights reserved.
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//
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#import "RSMultiLineView.h"
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#import "RSMultiLineRenderer.h"
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#import "RSMultiLineRendererMeasurements.h"
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@interface RSMultiLineView ()
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@property (nonatomic) RSMultiLineRenderer *renderer;
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@property (nonatomic) NSSize intrinsicSize;
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@property (nonatomic) BOOL intrinsicSizeIsValid;
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@property (nonatomic) RSMultiLineRenderer *selectedRenderer;
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@property (nonatomic) NSAttributedString *selectedAttributedStringValue;
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@end
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static NSAttributedString *emptyAttributedString = nil;
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@implementation RSMultiLineView
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- (instancetype)initWithFrame:(NSRect)frame {
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self = [super initWithFrame:frame];
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if (!self) {
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return nil;
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}
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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emptyAttributedString = [[NSAttributedString alloc] initWithString:@""];
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});
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_renderer = [RSMultiLineRenderer rendererWithAttributedTitle:emptyAttributedString];
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return self;
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}
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- (void)setRenderer:(RSMultiLineRenderer *)renderer {
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if (_renderer == renderer) {
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return;
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}
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_renderer = renderer;
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[self invalidateIntrinsicContentSize];
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self.needsDisplay = YES;
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}
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- (RSMultiLineRenderer *)selectedRenderer {
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if (_selectedRenderer) {
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return _selectedRenderer;
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}
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_selectedRenderer = [RSMultiLineRenderer rendererWithAttributedTitle:self.selectedAttributedStringValue];
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_selectedRenderer.backgroundColor = NSColor.alternateSelectedControlColor;
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return _selectedRenderer;
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}
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- (void)setSelected:(BOOL)selected {
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_selected = selected;
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self.needsDisplay = YES;
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}
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- (void)setEmphasized:(BOOL)emphasized {
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_emphasized = emphasized;
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self.needsDisplay = YES;
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}
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- (NSAttributedString *)selectedAttributedStringValue {
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if (!self.attributedStringValue) {
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return emptyAttributedString;
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}
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NSMutableAttributedString *s = [self.attributedStringValue mutableCopy];
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[s addAttribute:NSForegroundColorAttributeName value:NSColor.alternateSelectedControlTextColor range:NSMakeRange(0, s.string.length)];
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_selectedAttributedStringValue = s;
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return _selectedAttributedStringValue;
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}
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- (void)setAttributedStringValue:(NSAttributedString *)attributedStringValue {
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if (_attributedStringValue == attributedStringValue) {
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return;
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}
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_attributedStringValue = attributedStringValue;
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self.selectedAttributedStringValue = nil;
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self.selectedRenderer = nil;
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self.renderer = [RSMultiLineRenderer rendererWithAttributedTitle:attributedStringValue];
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}
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- (RSMultiLineRendererMeasurements *)measurements {
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return [self.renderer measurementsForWidth:NSWidth(self.frame)];
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}
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- (void)invalidateIntrinsicContentSize {
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self.intrinsicSizeIsValid = NO;
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}
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- (NSSize)intrinsicContentSize {
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if (!self.intrinsicSizeIsValid) {
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self.intrinsicSize = NSMakeSize(NSWidth(self.frame), self.measurements.height);
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self.intrinsicSizeIsValid = YES;
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}
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return self.intrinsicSize;
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}
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- (void)setFrameSize:(NSSize)newSize {
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[self invalidateIntrinsicContentSize];
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[super setFrameSize:newSize];
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}
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- (void)drawRect:(NSRect)r {
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if (self.selected) {
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if (self.emphasized) {
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[self.selectedRenderer renderTextInRect:self.bounds];
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}
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else {
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NSColor *savedBackgroundColor = self.renderer.backgroundColor;
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self.renderer.backgroundColor = NSColor.secondarySelectedControlColor;
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[self.renderer renderTextInRect:self.bounds];
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self.renderer.backgroundColor = savedBackgroundColor;
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}
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}
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else {
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[self.renderer renderTextInRect:self.bounds];
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}
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}
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@end
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