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BezierPath => BezierTransformer

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Horcrux
2017-01-10 13:14:51 +08:00
parent b15d0791e0
commit 155ce27594
6 changed files with 54 additions and 56 deletions
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ios/Text/RNSVGBezierPath.h → ios/Text/RNSVGBezierTransformer.h
+2 -2
View File
@@ -9,12 +9,12 @@
#import <UIKit/UIKit.h>
@interface RNSVGBezierPath : NSObject
@interface RNSVGBezierTransformer : NSObject
+ (BOOL) hasReachedEnd:(CGAffineTransform)transform;
+ (BOOL) hasReachedStart:(CGAffineTransform) transform;
- (instancetype)initWithBezierCurvesAndStartOffset:(NSArray<NSArray *> *)bezierCurves startOffset:(CGFloat)startOffset;
- (CGAffineTransform)transformAtDistance:(CGFloat)distance;
- (CGAffineTransform)getTransformAtDistance:(CGFloat)distance;
@end
ios/Text/RNSVGBezierPath.m → ios/Text/RNSVGBezierTransformer.m
+4 -6
View File
@@ -10,11 +10,9 @@
* based on CurvyText by iosptl: https://github.com/iosptl/ios7ptl/blob/master/ch21-Text/CurvyText/CurvyText/CurvyTextView.m
*/
#import "RNSVGBezierPath.h"
#import <QuartzCore/QuartzCore.h>
#import <CoreText/CoreText.h>
#import "RNSVGBezierTransformer.h"
@implementation RNSVGBezierPath
@implementation RNSVGBezierTransformer
{
NSArray<NSArray *> *_bezierCurves;
int _currentBezierIndex;
@@ -123,7 +121,7 @@ static CGFloat calculateDistance(CGPoint a, CGPoint b) {
}
- (CGAffineTransform)transformAtDistance:(CGFloat)distance
- (CGAffineTransform)getTransformAtDistance:(CGFloat)distance
{
distance += _startOffset;
if (_reachedEnd) {
@@ -150,7 +148,7 @@ static CGFloat calculateDistance(CGPoint a, CGPoint b) {
_lastPoint = _P0 = _P3;
_lastRecord += _lastDistance;
[self setControlPoints];
return [self transformAtDistance:distance - _startOffset];
return [self getTransformAtDistance:distance - _startOffset];
}
}
ios/Text/RNSVGTSpan.m
+34 -34
View File
@@ -8,13 +8,13 @@
#import "RNSVGTSpan.h"
#import "RNSVGBezierPath.h"
#import "RNSVGBezierTransformer.h"
#import "RNSVGText.h"
#import "RNSVGTextPath.h"
@implementation RNSVGTSpan
{
RNSVGBezierPath *_bezierPath;
RNSVGBezierTransformer *_bezierTransformer;
}
- (void)renderLayerTo:(CGContextRef)context
@@ -33,32 +33,32 @@
return [self getGroupPath:context];
}
[self setContextBoundingBox:CGContextGetClipBoundingBox(context)];
[self initialTextPath];
CGMutablePathRef path = CGPathCreateMutable();
if ([self.content isEqualToString:@""]) {
RNSVGGlyphPoint computedPoint = [self getComputedGlyphPoint:0 glyphOffset:CGPointZero];
[self getTextRoot].lastX = computedPoint.x;
[self getTextRoot].lastY = computedPoint.y;
return path;
}
CTFontRef font = [self getComputedFont];
// Create a dictionary for this font
CFDictionaryRef attributes = (__bridge CFDictionaryRef)@{
(NSString *)kCTFontAttributeName: (__bridge id)font,
(NSString *)kCTForegroundColorFromContextAttributeName: @YES
};
CFStringRef string = (__bridge CFStringRef)self.content;
CFAttributedStringRef attrString = CFAttributedStringCreate(kCFAllocatorDefault, string, attributes);
CTLineRef line = CTLineCreateWithAttributedString(attrString);
CGMutablePathRef linePath = [self getLinePath:line];
CGAffineTransform offset = CGAffineTransformMakeTranslation(0, _bezierPath ? 0 : CTFontGetSize(font) * 1.1);
CGAffineTransform offset = CGAffineTransformMakeTranslation(0, _bezierTransformer ? 0 : CTFontGetSize(font) * 1.1);
CGPathAddPath(path, &offset, linePath);
// clean up
CFRelease(attrString);
CFRelease(line);
@@ -71,81 +71,81 @@
{
CGAffineTransform upsideDown = CGAffineTransformMakeScale(1.0, -1.0);
CGMutablePathRef path = CGPathCreateMutable();
CFArrayRef glyphRuns = CTLineGetGlyphRuns(line);
CTRunRef run = CFArrayGetValueAtIndex(glyphRuns, 0);
CFIndex runGlyphCount = CTRunGetGlyphCount(run);
CGPoint positions[runGlyphCount];
CGGlyph glyphs[runGlyphCount];
// Grab the glyphs, positions, and font
CTRunGetPositions(run, CFRangeMake(0, 0), positions);
CTRunGetGlyphs(run, CFRangeMake(0, 0), glyphs);
CFDictionaryRef attributes = CTRunGetAttributes(run);
CTFontRef runFont = CFDictionaryGetValue(attributes, kCTFontAttributeName);
CGFloat lineStartX;
RNSVGGlyphPoint computedPoint;
for(CFIndex i = 0; i < runGlyphCount; i++) {
computedPoint = [self getComputedGlyphPoint:i glyphOffset:positions[i]];
if (!i) {
lineStartX = computedPoint.x;
}
CGPathRef letter = CTFontCreatePathForGlyph(runFont, glyphs[i], nil);
CGAffineTransform textPathTransform = [self getTextPathTransform:computedPoint.x];
if ([RNSVGBezierPath hasReachedEnd:textPathTransform]) {
if ([RNSVGBezierTransformer hasReachedEnd:textPathTransform]) {
break;
} else if ([RNSVGBezierPath hasReachedStart:textPathTransform]) {
} else if ([RNSVGBezierTransformer hasReachedStart:textPathTransform]) {
continue;
}
CGAffineTransform transform;
if (_bezierPath) {
if (_bezierTransformer) {
textPathTransform = CGAffineTransformConcat(CGAffineTransformMakeTranslation(0, computedPoint.y), textPathTransform);
transform = CGAffineTransformScale(textPathTransform, 1.0, -1.0);
} else {
transform = CGAffineTransformTranslate(upsideDown, computedPoint.x, -computedPoint.y);
}
CGPathAddPath(path, &transform, letter);
CGPathRelease(letter);
}
[self getTextRoot].lastX = computedPoint.x;
return path;
}
- (void)initialTextPath
{
__block RNSVGBezierPath *bezierPath;
__block RNSVGBezierTransformer *bezierTransformer;
[self traverseTextSuperviews:^(__kindof RNSVGText *node) {
if ([node class] == [RNSVGTextPath class]) {
RNSVGTextPath *textPath = node;
bezierPath = [node getBezierPath];
bezierTransformer = [node getBezierTransformer];
return NO;
}
return YES;
}];
_bezierPath = bezierPath;
_bezierTransformer = bezierTransformer;
}
- (CGAffineTransform)getTextPathTransform:(CGFloat)distance
{
if (_bezierPath) {
return [_bezierPath transformAtDistance:distance];
if (_bezierTransformer) {
return [_bezierTransformer getTransformAtDistance:distance];
}
return CGAffineTransformIdentity;
}
@end
ios/Text/RNSVGTextPath.h
+2 -2
View File
@@ -9,13 +9,13 @@
#import <Foundation/Foundation.h>
#import <CoreText/CoreText.h>
#import "RNSVGText.h"
#import "RNSVGBezierPath.h"
#import "RNSVGBezierTransformer.h"
@interface RNSVGTextPath : RNSVGText
@property (nonatomic, strong) NSString *href;
@property (nonatomic, strong) NSString *startOffset;
- (RNSVGBezierPath *)getBezierPath;
- (RNSVGBezierTransformer *)getBezierTransformer;
@end
ios/Text/RNSVGTextPath.m
+6 -5
View File
@@ -8,7 +8,7 @@
#import "RNSVGTextPath.h"
#import "RNSVGBezierPath.h"
#import "RNSVGBezierTransformer.h"
@implementation RNSVGTextPath
@@ -23,19 +23,20 @@
return [self getGroupPath:context];
}
- (RNSVGBezierPath *)getBezierPath
- (RNSVGBezierTransformer *)getBezierTransformer
{
RNSVGSvgView *svg = [self getSvgView];
RNSVGNode *template = [svg getDefinedTemplate:self.href];
if ([template class] != [RNSVGPath class]) {
// warning about this.
return nil;
}
RNSVGPath *path = template;
CGFloat startOffset = [self getWidthRelatedValue:self.startOffset];
return [[RNSVGBezierPath alloc] initWithBezierCurvesAndStartOffset:[path getBezierCurves] startOffset:startOffset];
return [[RNSVGBezierTransformer alloc] initWithBezierCurvesAndStartOffset:[path getBezierCurves]
startOffset:startOffset];
}
@end