/
SETextView.m
2372 lines (1934 loc) · 71.6 KB
/
SETextView.m
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//
// SETextView.m
// SECoreTextView
//
// Created by kishikawa katsumi on 2013/04/20.
// Copyright (c) 2013 kishikawa katsumi. All rights reserved.
//
#import "SETextView.h"
#import "SETextInput.h"
#import "SETextLayout.h"
#import "SELineLayout.h"
#import "SETextAttachment.h"
#import "SETextSelection.h"
#import "SETextSelectionView.h"
#import "SETextEditingCaret.h"
#import "SETextMagnifierCaret.h"
#import "SETextMagnifierRanged.h"
#import "SESelectionGrabber.h"
#import "SELinkText.h"
#import "SETextGeometry.h"
#import "SEConstants.h"
typedef NS_ENUM (NSUInteger, SETouchPhase) {
SETouchPhaseNone = 0,
SETouchPhaseBegan = 1 << 0,
SETouchPhaseMoved = 1 << 1,
SETouchPhaseStationary = 1 << 2,
SETouchPhaseEnded = SETouchPhaseNone,
SETouchPhaseCancelled = SETouchPhaseNone,
SETouchPhaseTouching = SETouchPhaseBegan | SETouchPhaseMoved | SETouchPhaseStationary,
SETouchPhaseAny = NSUIntegerMax
};
static NSString * const OBJECT_REPLACEMENT_CHARACTER = @"\uFFFC";
static NSString * const ZERO_WIDTH_SPACE = @"\u200B";
static NSString * const LINE_SEPARATOR = @"\u2028";
static NSString * const PARAGRAPH_SEPARATOR = @"\u2029";
@interface SETextView ()
@property (nonatomic) SETextLayout *textLayout;
@property (nonatomic) NSMutableSet *attachments;
@property (nonatomic) SETouchPhase touchPhase;
@property (nonatomic) CGPoint clickPoint;
@property (nonatomic) CGPoint mouseLocation;
@property (nonatomic, readonly) NSMutableAttributedString *editingAttributedText;
@property (nonatomic, copy) NSAttributedString *originalAttributedTextWhenHighlighting;
@property (nonatomic, weak) NSTimer *longPressTimer;
@property (nonatomic, getter = isLongPressing) BOOL longPressing;
@property (nonatomic, readwrite) BOOL editing;
#if TARGET_OS_IPHONE
@property (nonatomic) UITextInputStringTokenizer *tokenizer;
@property (nonatomic) SETextMagnifierCaret *magnifierCaret;
@property (nonatomic) SETextMagnifierRanged *magnifierRanged;
@property (nonatomic) SETextSelectionView *textSelectionView;
@property (nonatomic) SETextEditingCaret *caretView;
@property (nonatomic, copy) NSAttributedString *storedAttributedText;
#endif
@end
@implementation SETextView
#if TARGET_OS_IPHONE
@synthesize inputDelegate;
@synthesize markedTextStyle;
#endif
- (void)commonInit
{
self.textLayout = [[SETextLayout alloc] init];
self.textLayout.bounds = self.bounds;
self.attachments = [[NSMutableSet alloc] init];
self.highlightedTextColor = [NSColor whiteColor];
self.selectedTextBackgroundColor = [SEConstants selectedTextBackgroundColor];
self.linkHighlightColor = [SEConstants selectedTextBackgroundColor];
self.linkRolloverEffectColor = [SEConstants linkColor];
self.minimumLongPressDuration = 0.5;
#if TARGET_OS_IPHONE
self.showsEditingMenuAutomatically = YES;
self.magnifierCaret = [[SETextMagnifierCaret alloc] init];
self.magnifierRanged = [[SETextMagnifierRanged alloc] init];
[self setupTextSelectionControls];
[self setupTextEditingControls];
self.autocapitalizationType = UITextAutocapitalizationTypeSentences;
self.autocorrectionType = UITextAutocorrectionTypeDefault;
self.spellCheckingType = UITextSpellCheckingTypeDefault;
self.keyboardType = UIKeyboardTypeDefault;
self.keyboardAppearance = UIKeyboardAppearanceDefault;
self.returnKeyType = UIReturnKeyDefault;
self.enablesReturnKeyAutomatically = NO;
self.secureTextEntry = NO;
#endif
}
#if TARGET_OS_IPHONE
- (void)setupTextSelectionControls
{
CGRect frame = self.bounds;
self.textSelectionView = [[SETextSelectionView alloc] initWithFrame:frame textView:self];
self.textSelectionView.userInteractionEnabled = NO;
self.textSelectionView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
[self addSubview:self.textSelectionView];
}
- (void)setupTextEditingControls
{
self.caretView = [[SETextEditingCaret alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 2.0f, 0.0f)];
[self addSubview:self.caretView];
}
#endif
- (void)awakeFromNib
{
[self commonInit];
}
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
[self commonInit];
}
return self;
}
- (void)dealloc
{
#if TARGET_OS_IPHONE
[self.caretView stopBlink];
#endif
}
#pragma mark -
+ (CGRect)frameRectWithAttributtedString:(NSAttributedString *)attributedString
constraintSize:(CGSize)constraintSize
{
return [self frameRectWithAttributtedString:attributedString
constraintSize:constraintSize
lineSpacing:0.0f];
}
+ (CGRect)frameRectWithAttributtedString:(NSAttributedString *)attributedString
constraintSize:(CGSize)constraintSize
lineSpacing:(CGFloat)lineSpacing
{
return [self frameRectWithAttributtedString:attributedString
constraintSize:constraintSize
lineSpacing:lineSpacing
font:nil];
}
+ (CGRect)frameRectWithAttributtedString:(NSAttributedString *)attributedString
constraintSize:(CGSize)constraintSize
lineSpacing:(CGFloat)lineSpacing
font:(NSFont *)font
{
return [self frameRectWithAttributtedString:attributedString
constraintSize:constraintSize
lineSpacing:lineSpacing
paragraphSpacing:0.0f
font:font];
}
+ (CGRect)frameRectWithAttributtedString:(NSAttributedString *)attributedString
constraintSize:(CGSize)constraintSize
lineSpacing:(CGFloat)lineSpacing
paragraphSpacing:(CGFloat)paragraphSpacing
font:(NSFont *)font
{
NSInteger length = attributedString.length;
NSMutableAttributedString *mutableAttributedString = attributedString.mutableCopy;
CTTextAlignment textAlignment = kCTTextAlignmentNatural;
lineSpacing = roundf(lineSpacing);
CGFloat lineHeight = 0.0f;
paragraphSpacing = roundf(paragraphSpacing);
CTParagraphStyleSetting setting[] = {
{ kCTParagraphStyleSpecifierAlignment, sizeof(textAlignment), &textAlignment},
{ kCTParagraphStyleSpecifierMinimumLineHeight, sizeof(lineHeight), &lineHeight },
{ kCTParagraphStyleSpecifierMaximumLineHeight, sizeof(lineHeight), &lineHeight },
{ kCTParagraphStyleSpecifierLineSpacing, sizeof(lineSpacing), &lineSpacing },
{ kCTParagraphStyleSpecifierMinimumLineSpacing, sizeof(lineSpacing), &lineSpacing },
{ kCTParagraphStyleSpecifierMaximumLineSpacing, sizeof(lineSpacing), &lineSpacing },
{ kCTParagraphStyleSpecifierParagraphSpacing, sizeof(paragraphSpacing), ¶graphSpacing }
};
CTParagraphStyleRef paragraphStyle = CTParagraphStyleCreate(setting, sizeof(setting) / sizeof(CTParagraphStyleSetting));
[mutableAttributedString addAttributes:@{(id)kCTParagraphStyleAttributeName: (__bridge id)paragraphStyle} range:NSMakeRange(0, length)];
CFRelease(paragraphStyle);
attributedString = mutableAttributedString;
if (font) {
CFStringRef fontName = (__bridge CFStringRef)font.fontName;
CGFloat fontSize = font.pointSize;
CTFontRef ctfont = CTFontCreateWithName(fontName, fontSize, NULL);
[mutableAttributedString addAttributes:@{(id)kCTFontAttributeName: (__bridge id)ctfont} range:NSMakeRange(0, length)];
CFRelease(ctfont);
attributedString = mutableAttributedString;
}
return [SETextLayout frameRectWithAttributtedString:attributedString
constraintSize:constraintSize];
}
#pragma mark -
- (void)setFrame:(CGRect)frame
{
[super setFrame:frame];
[self setNeedsDisplayInRect:self.bounds];
}
- (void)setBounds:(CGRect)bounds
{
[super setBounds:bounds];
[self setNeedsDisplayInRect:self.bounds];
}
- (CGSize)sizeThatFits:(CGSize)size
{
[self setAdditionalAttributes];
CGRect frameRect = [self.class frameRectWithAttributtedString:self.attributedText
constraintSize:size
lineSpacing:self.lineSpacing
font:self.font];
return frameRect.size;
}
- (void)sizeToFit
{
CGSize size = [self sizeThatFits:CGSizeMake(CGRectGetWidth(self.bounds), CGFLOAT_MAX)];
CGRect frame = self.frame;
frame.size = size;
self.frame = frame;
}
#pragma mark -
- (void)setSelectable:(BOOL)selectable
{
_selectable = selectable;
#if TARGET_OS_IPHONE
self.textSelectionView.userInteractionEnabled = self.isSelectable;
#endif
}
- (void)setEditable:(BOOL)editable
{
_editable = editable;
if (self.isEditable) {
self.selectable = YES;
}
}
- (void)setEditing:(BOOL)editing
{
_editing = editing;
self.textLayout.editing = editing;
#if TARGET_OS_IPHONE
if (!editing) {
self.caretView.hidden = YES;
}
#endif
}
- (void)setText:(NSString *)text
{
_text = text;
if (self.text) {
self.attributedText = [[NSAttributedString alloc] initWithString:text];
} else {
self.attributedText = nil;
}
}
- (void)setAttributedText:(NSAttributedString *)attributedText
{
_attributedText = attributedText.copy;
_text = _attributedText.string;
[self setNeedsDisplayInRect:self.bounds];
}
- (CGRect)layoutFrame
{
return self.textLayout.frameRect;
}
- (NSRange)selectedRange
{
return self.textLayout.textSelection.selectedRange;
}
#if TARGET_OS_IPHONE
- (void)setSelectedRange:(NSRange)selectedRange
{
self.selectedTextRange = [SETextRange rangeWithNSRange:selectedRange];
}
#endif
- (NSString *)selectedText
{
return [self.text substringWithRange:self.selectedRange];
}
- (NSAttributedString *)selectedAttributedText
{
return [self.attributedText attributedSubstringFromRange:self.selectedRange];
}
- (NSMutableString *)editingText
{
return self.text ? self.text.mutableCopy : [[NSMutableString alloc] init];
}
- (NSMutableAttributedString *)editingAttributedText
{
return self.attributedText ? self.attributedText.mutableCopy : [[NSMutableAttributedString alloc] init];
}
- (CGRect)caretRect
{
#if TARGET_OS_IPHONE
return self.caretView.frame;
#else
return CGRectNull;
#endif
}
#pragma mark -
- (void)addObject:(id)object size:(CGSize)size atIndex:(NSInteger)index
{
[self addObject:object size:size replaceRange:NSMakeRange(index, 0)];
}
- (void)addObject:(id)object size:(CGSize)size replaceRange:(NSRange)range
{
SETextAttachment *attachment = [[SETextAttachment alloc] initWithObject:object size:size range:range];
[self.attachments addObject:attachment];
}
- (void)setAdditionalAttributes
{
[self setFontAttributes];
[self setTextColorAttributes];
[self setTextAttachmentAttributes];
[self setParagraphStyle];
}
- (void)setFontAttributes
{
if (!self.font) {
return;
}
CFStringRef fontName = (__bridge CFStringRef)self.font.fontName;
CGFloat fontSize = self.font.pointSize;
CTFontRef ctfont = CTFontCreateWithName(fontName, fontSize, NULL);
[self setAttributes:@{(id)kCTFontAttributeName: (__bridge id)ctfont}];
CFRelease(ctfont);
}
- (void)setTextColorAttributes
{
if (!self.textColor) {
return;
}
#if TARGET_OS_IPHONE
CGColorRef color = self.textColor.CGColor;
[self setAttributes:@{(id)kCTForegroundColorAttributeName: (__bridge id)color}];
#else
NSDictionary *attributes = nil;
CGColorRef color = NULL;
if ([self.textColor respondsToSelector:@selector(CGColor)]) {
color = self.textColor.CGColor;
attributes = @{(id)kCTForegroundColorAttributeName: (__bridge id)color};
} else {
color = [self.textColor createCGColor];
attributes = @{(id)kCTForegroundColorAttributeName: (__bridge id)color};
CGColorRelease(color);
}
[self setAttributes:attributes];
#endif
}
- (void)setTextAttachmentAttributes
{
NSString *replacementString = OBJECT_REPLACEMENT_CHARACTER;
for (SETextAttachment *attachment in self.attachments) {
NSMutableAttributedString *editingAttributedText = self.editingAttributedText;
if (!attachment.replacedString) {
if (attachment.range.length > 0) {
NSAttributedString *originalAttributedString = [editingAttributedText attributedSubstringFromRange:attachment.range];
attachment.originalAttributedString = originalAttributedString;
[editingAttributedText replaceCharactersInRange:attachment.range withString:replacementString];
attachment.replacedString = replacementString;
} else {
[editingAttributedText insertAttributedString:[[NSAttributedString alloc] initWithString:replacementString] atIndex:attachment.range.location];
attachment.replacedString = replacementString;
}
CTRunDelegateCallbacks callbacks = attachment.callbacks;
CTRunDelegateRef runDelegate = CTRunDelegateCreate(&callbacks, (__bridge void *)attachment);
[editingAttributedText addAttributes:@{(id)kCTRunDelegateAttributeName: (__bridge id)runDelegate} range:attachment.range];
CFRelease(runDelegate);
self.attributedText = editingAttributedText;
}
}
}
- (void)setParagraphStyle
{
#if TARGET_OS_IPHONE
CTTextAlignment textAlignment;
if (self.textAlignment == NSTextAlignmentRight) {
textAlignment = kCTTextAlignmentRight;
} else if (self.textAlignment == NSTextAlignmentCenter) {
textAlignment = kCTTextAlignmentCenter;
} else {
textAlignment = (CTTextAlignment)self.textAlignment;
}
#else
CTTextAlignment textAlignment = self.textAlignment;
#endif
CTLineBreakMode lineBreakMode = (CTLineBreakMode)self.lineBreakMode;
if (lineBreakMode == kCTLineBreakByTruncatingTail) {
lineBreakMode = kCTLineBreakByWordWrapping;
}
CGFloat lineSpacing = roundf(self.lineSpacing);
CGFloat lineHeight = roundf(self.lineHeight);
CGFloat paragraphSpacing = roundf(self.paragraphSpacing);
CTParagraphStyleSetting setting[] = {
{ kCTParagraphStyleSpecifierAlignment, sizeof(textAlignment), &textAlignment},
{ kCTParagraphStyleSpecifierLineBreakMode, sizeof(lineBreakMode), &lineBreakMode},
{ kCTParagraphStyleSpecifierMinimumLineHeight, sizeof(lineHeight), &lineHeight },
{ kCTParagraphStyleSpecifierMaximumLineHeight, sizeof(lineHeight), &lineHeight },
{ kCTParagraphStyleSpecifierLineSpacing, sizeof(lineSpacing), &lineSpacing },
{ kCTParagraphStyleSpecifierMinimumLineSpacing, sizeof(lineSpacing), &lineSpacing },
{ kCTParagraphStyleSpecifierMaximumLineSpacing, sizeof(lineSpacing), &lineSpacing },
{ kCTParagraphStyleSpecifierParagraphSpacing, sizeof(paragraphSpacing), ¶graphSpacing }
};
CTParagraphStyleRef paragraphStyle = CTParagraphStyleCreate(setting, sizeof(setting) / sizeof(CTParagraphStyleSetting));
[self setAttributes:@{(id)kCTParagraphStyleAttributeName: (__bridge id)paragraphStyle}];
CFRelease(paragraphStyle);
self.textLayout.textAlignment = textAlignment;
}
- (void)setAttributes:(NSDictionary *)attributes
{
NSInteger length = self.attributedText.length;
NSMutableAttributedString *attributedString = self.attributedText.mutableCopy;
if (attributes) {
[attributedString addAttributes:attributes range:NSMakeRange(0, length)];
}
self.attributedText = attributedString;
}
- (void)updateLayout
{
[self setAdditionalAttributes];
self.textLayout.bounds = self.bounds;
self.textLayout.attributedString = self.attributedText;
self.textLayout.lineBreakMode = self.lineBreakMode;
[self.textLayout update];
}
#pragma mark -
- (void)clearSelection
{
self.textLayout.textSelection = nil;
}
- (void)finishSelecting
{
#if TARGET_OS_IPHONE
if (!self.editing) {
if (self.showsEditingMenuAutomatically) {
[self hideEditingMenu];
[self showEditingMenu];
}
}
#endif
if ([self respondsToSelector:@selector(textViewDidEndSelecting:)]) {
[self.delegate textViewDidEndSelecting:self];
}
}
- (void)selectionChanged
{
#if TARGET_OS_IPHONE
[self updateCaretPosition];
#endif
[self notifySelectionChanged];
[self setNeedsDisplayInRect:self.bounds];
}
- (void)notifySelectionChanged
{
if ([self.delegate respondsToSelector:@selector(textViewDidChangeSelection:)]) {
[self.delegate textViewDidChangeSelection:self];
}
}
- (void)textChanged
{
[self notifyTextChanged];
}
- (void)notifyTextChanged
{
if ([self.delegate respondsToSelector:@selector(textViewDidChange:)]) {
[self.delegate textViewDidChange:self];
}
}
- (void)clickedOnLink:(SELinkText *)link
{
if ([self.delegate respondsToSelector:@selector(textView:clickedOnLink:atIndex:)]) {
[self.delegate textView:self clickedOnLink:link atIndex:[self stringIndexAtPoint:self.mouseLocation]];
}
}
- (void)longPressedOnLink:(SELinkText *)link
{
if ([self.delegate respondsToSelector:@selector(textView:longPressedOnLink:atIndex:)]) {
[self.delegate textView:self longPressedOnLink:link atIndex:[self stringIndexAtPoint:self.mouseLocation]];
}
}
#pragma mark -
- (CFIndex)stringIndexAtPoint:(CGPoint)point
{
return [self.textLayout stringIndexForPosition:point];
}
- (BOOL)containsPointInSelection:(CGPoint)point
{
CFIndex index = [self stringIndexAtPoint:point];
NSRange selectedRange = self.selectedRange;
return NSLocationInRange(index, selectedRange);
}
- (BOOL)containsPointInTextFrame:(CGPoint)point
{
return CGRectContainsPoint(self.textLayout.frameRect, point);
}
- (SELinkText *)linkAtPoint:(CGPoint)point
{
for (SELineLayout *lineLayout in self.textLayout.lineLayouts) {
SELinkText *link = [lineLayout linkAtPoint:point];
if (link) {
return link;
}
}
return nil;
}
- (void)enumerateLinksUsingBlock:(void (^)(SELinkText *link, BOOL *stop))block
{
for (SELineLayout *lineLayout in self.textLayout.lineLayouts) {
for (SELinkText *link in lineLayout.links) {
BOOL flag = NO;
block(link, &flag);
if (flag) {
break;
}
}
}
}
#if TARGET_OS_IPHONE
- (void)drawTextDecorations
{
[self.attributedText enumerateAttribute:NSStrikethroughStyleAttributeName inRange:NSMakeRange(0, self.attributedText.length) options:kNilOptions usingBlock:^(id value, NSRange range, BOOL *stop) {
if (!value) {
return;
}
for (SELineLayout *lineLayout in self.textLayout.lineLayouts) {
CGRect strikeRect = [lineLayout rectOfStringWithRange:range];
if (!CGRectIsEmpty(strikeRect)) {
if (self.textColor) {
[self.textColor set];
}
else {
[[UIColor blackColor] set];
}
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:CGPointMake(CGRectGetMinX(strikeRect), CGRectGetMidY(strikeRect))];
[path addLineToPoint:CGPointMake(CGRectGetMaxX(strikeRect), CGRectGetMidY(strikeRect))];
[path stroke];
}
}
}];
}
#endif
- (void)drawTextAttachmentsInContext:(CGContextRef)context
{
NSMutableSet *attachmentsToLeave = [[NSMutableSet alloc] init];
[self.attributedText enumerateAttribute:(id)kCTRunDelegateAttributeName inRange:NSMakeRange(0, self.text.length) options:kNilOptions usingBlock:^(id value, NSRange range, BOOL *stop) {
if (!value) {
return;
}
CTRunDelegateRef runDelegate = (__bridge CTRunDelegateRef)value;
SETextAttachment *attachment = (__bridge SETextAttachment *)CTRunDelegateGetRefCon(runDelegate);
if (!attachment) {
return;
}
[attachmentsToLeave addObject:attachment];
for (SELineLayout *lineLayout in self.textLayout.lineLayouts) {
CGRect lineRect = lineLayout.rect;
CGRect rect = [lineLayout rectOfStringWithRange:range];
if (!CGRectIsEmpty(rect) && CGRectGetMaxX(rect) <= (CGRectGetMaxX(lineRect) - lineLayout.truncationTokenWidth)) {
id object = attachment.object;
CGSize size = attachment.size;
rect.origin.x += (CGRectGetWidth(rect) - size.width) / 2;
rect.origin.y += CGRectGetHeight(rect) - size.height;
rect.size = size;
rect = CGRectIntegral(rect);
if ([object isKindOfClass:[NSView class]]) {
UIView *view = object;
view.frame = rect;
if (!view.superview) {
[self addSubview:view];
}
} else if ([object isKindOfClass:[NSImage class]]) {
NSImage *image = object;
#if TARGET_OS_IPHONE
[image drawInRect:rect];
#else
[image drawInRect:rect fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:1.0f];
#endif
} else if ([object isKindOfClass:NSClassFromString(@"NSBlock")]) {
SETextAttachmentDrawingBlock draw = attachment.object;
CGContextSaveGState(context);
draw(rect, context);
CGContextRestoreGState(context);
}
}
}
}];
self.attachments = attachmentsToLeave;
}
- (void)highlightSelection
{
SETextSelection *textSelection = self.textLayout.textSelection;
NSRange selectedRange = textSelection.selectedRange;
if (!textSelection || selectedRange.location == NSNotFound) {
return;
}
NSInteger lineNumber = 0;
#if TARGET_OS_IPHONE
CGRect startRect = CGRectZero;
CGRect endRect = CGRectZero;
#endif
CGFloat lineSpacing = self.lineSpacing;
CGFloat previousLineOffset = 0.0f;
for (SELineLayout *lineLayout in self.textLayout.lineLayouts) {
NSRange stringRange = lineLayout.stringRange;
NSRange intersectionRange = NSIntersectionRange(selectedRange, stringRange);
if (intersectionRange.location == NSNotFound) {
continue;
}
CGRect selectionRect = [lineLayout rectOfStringWithRange:selectedRange];
if (CGRectIsEmpty(selectionRect)) {
continue;
}
[self.selectedTextBackgroundColor set];
selectionRect.origin.y -= lineSpacing;
selectionRect.size.height += lineSpacing;
if (selectionRect.origin.y < 0.0f) {
selectionRect.size.height += selectionRect.origin.y;
selectionRect.origin.y = 0.0f;
}
if (NSMaxRange(selectedRange) != NSMaxRange(stringRange) && NSMaxRange(intersectionRange) == NSMaxRange(stringRange)) {
selectionRect.size.width = CGRectGetWidth(self.bounds) - CGRectGetMinX(selectionRect);
}
if (previousLineOffset > 0.0f) {
#if TARGET_OS_IPHONE
CGFloat delta = CGRectGetMinY(selectionRect) - previousLineOffset;
selectionRect.origin.y -= delta;
selectionRect.size.height += delta;
#else
CGFloat delta = CGRectGetMaxY(selectionRect) - previousLineOffset;
selectionRect.origin.y -= delta;
selectionRect.size.height += delta;
#endif
}
selectionRect = CGRectIntegral(selectionRect);
UIRectFill(selectionRect);
#if TARGET_OS_IPHONE
if (lineNumber == 0) {
startRect = selectionRect;
endRect = selectionRect;
} else {
endRect = selectionRect;
}
#endif
#if TARGET_OS_IPHONE
previousLineOffset = CGRectGetMaxY(selectionRect);
#else
previousLineOffset = CGRectGetMinY(selectionRect);
#endif
lineNumber++;
}
#if TARGET_OS_IPHONE
self.textSelectionView.startFrame = startRect;
self.textSelectionView.endFrame = endRect;
#endif
}
- (void)highlightMarkedText
{
NSRange markedTextRange = self.textLayout.markedTextRange;
if (markedTextRange.location != NSNotFound && markedTextRange.length > 0) {
for (SELineLayout *lineLayout in self.textLayout.lineLayouts) {
CGRect markedRect = [lineLayout rectOfStringWithRange:markedTextRange];
if (!CGRectIsEmpty(markedRect)) {
[self.selectedTextBackgroundColor set];
CGFloat lineSpacing = self.lineSpacing;
markedRect.origin.y -= lineSpacing;
markedRect.size.height += lineSpacing;
NSRectFill(markedRect);
}
}
}
}
- (void)__highlightLinks
{
[self enumerateLinksUsingBlock:^(SELinkText *link, BOOL *stop) {
for (SETextGeometry *geometry in link.geometries) {
[self.linkHighlightColor set];
CGRect linkRect = geometry.rect;
NSBezierPath *path = [self bezierPathWithRoundedRect:linkRect cornerRadius:3.0f];
[path fill];
}
}];
}
- (void)highlightClickedLink
{
if (self.touchPhase & SETouchPhaseBegan || self.touchPhase & SETouchPhaseStationary) {
SELinkText *link = [self linkAtPoint:self.mouseLocation];
for (SETextGeometry *geometry in link.geometries) {
[self.linkHighlightColor set];
CGRect linkRect = geometry.rect;
NSBezierPath *path = [self bezierPathWithRoundedRect:linkRect cornerRadius:3.0f];
[path fill];
}
}
}
#if !TARGET_OS_IPHONE
- (void)highlightRolloveredLink
{
if (self.touchPhase == SETouchPhaseNone) {
SELinkText *link = [self linkAtPoint:self.mouseLocation];
for (SETextGeometry *geometry in link.geometries) {
[self.linkRolloverEffectColor set];
CGRect linkRect = geometry.rect;
linkRect.size.height = 1.0f;
NSRectFill(linkRect);
}
}
}
- (void)updateCursorRectsInLinks
{
[self discardCursorRects];
[self addCursorRect:self.textLayout.frameRect cursor:[NSCursor IBeamCursor]];
[self enumerateLinksUsingBlock:^(SELinkText *link, BOOL *stop) {
for (SETextGeometry *geometry in link.geometries) {
[self addCursorRect:geometry.rect cursor:[NSCursor pointingHandCursor]];
}
}];
}
- (void)updateTrackingAreasInLinks
{
NSArray *trackingAreas = self.trackingAreas;
for (NSTrackingArea *trackingArea in trackingAreas) {
[self removeTrackingArea:trackingArea];
}
[self enumerateLinksUsingBlock:^(SELinkText *link, BOOL *stop) {
for (SETextGeometry *geometry in link.geometries) {
NSTrackingArea *trackingArea = [[NSTrackingArea alloc] initWithRect:geometry.rect
options:NSTrackingMouseEnteredAndExited | NSTrackingActiveInKeyWindow
owner:self
userInfo:nil];
[self addTrackingArea:trackingArea];
}
}];
}
#endif
- (NSBezierPath *)bezierPathWithRoundedRect:(CGRect)rect cornerRadius:(CGFloat)radius
{
#if TARGET_OS_IPHONE
return [UIBezierPath bezierPathWithRoundedRect:rect cornerRadius:radius];
#else
return [NSBezierPath bezierPathWithRoundedRect:rect xRadius:radius yRadius:radius];
#endif
}
#pragma mark -
- (void)drawRect:(CGRect)dirtyRect
{
[super drawRect:dirtyRect];
#if TARGET_OS_IPHONE
CGContextRef context = UIGraphicsGetCurrentContext();
#else
CGContextRef context = [[NSGraphicsContext currentContext] graphicsPort];
#endif
[self updateLayout];
[self highlightSelection];
if (self.isEditing) {
[self highlightMarkedText];
}
[self highlightClickedLink];
#if TARGET_OS_IPHONE
[self drawTextDecorations];
#endif
[self drawTextAttachmentsInContext:context];
#if TARGET_OS_IPHONE
[self resetSelectionGrabber];
#else
[self highlightRolloveredLink];
[self updateCursorRectsInLinks];
[self updateTrackingAreasInLinks];
#endif
[self.textLayout drawInContext:context];
}
#pragma mark - Touch and Hold on Link
- (void)startLongPressTimer
{
[self stopLongPressTimer];
NSTimer *holdTimer = [NSTimer scheduledTimerWithTimeInterval:self.minimumLongPressDuration
target:self
selector:@selector(handleLongPress:)
userInfo:nil
repeats:NO];
self.longPressTimer = holdTimer;
}
- (void)stopLongPressTimer
{
if (self.longPressTimer && [self.longPressTimer isValid]) {
[self.longPressTimer invalidate];
}
self.longPressTimer = nil;
}
- (void)handleLongPress:(NSTimer *)timer
{
[self stopLongPressTimer];
if ([self containsPointInTextFrame:self.mouseLocation]) {
SELinkText *link = [self linkAtPoint:self.mouseLocation];
if (link) {
[self longPressedOnLink:link];
#if TARGET_OS_IPHONE
[self clearSelection];
[self hideEditingMenu];
#endif
self.longPressing = YES;
}
}
}
#pragma mark - iOS touch events
#if TARGET_OS_IPHONE
- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event
{
if (self.isHidden || self.userInteractionEnabled == NO || self.alpha < 0.01f) {
return [super hitTest:point withEvent:event];
}
if (self.selectable || self.editable) {
return [super hitTest:point withEvent:event];
}
SELinkText *link = [self linkAtPoint:point];
if (link) {
return [super hitTest:point withEvent:event];
}
return nil;
}
- (void)moveMagnifierCaretToPoint:(CGPoint)point
{
if (!self.magnifierCaret.superview) {
[self.magnifierCaret showInView:self.window atPoint:[self convertPoint:point toView:nil]];
}
[self.magnifierCaret moveToPoint:[self convertPoint:point toView:nil]];
}
- (void)hideMagnifierCaret
{
[self.magnifierCaret hide];
}
- (void)moveMagnifierRangedToPoint:(CGPoint)point
{
if (!self.magnifierRanged.superview) {
[self.magnifierRanged showInView:self.window atPoint:[self convertPoint:point toView:nil]];
}