Initial commit

2017-08-15 16:59:01 +08:00
commit bdc83e07ef
5766 changed files with 423223 additions and 0 deletions
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+//
+//  WhiteBoardDrawView.h
+//  NIM
+//
+//  Created by 高峰 on 15/7/1.
+//  Copyright (c) 2015年 Netease. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface NTESWhiteboardDrawView : UIView
+
+- (void)setLineColor:(UIColor *)color;
+
+- (void)addPoints:(NSMutableArray *)points isNewLine:(BOOL)newLine;
+
+- (void)deleteLastLine;
+
+- (void)clear;
+
+@end
@@ -0,0 +1,150 @@
+//
+//  WhiteBoardDrawView.m
+//  NIM
+//
+//  Created by 高峰 on 15/7/1.
+//  Copyright (c) 2015年 Netease. All rights reserved.
+//
+
+#import "NTESWhiteboardDrawView.h"
+#import <QuartzCore/QuartzCore.h>
+#import "NTESCADisplayLinkHolder.h"
+
+@interface NTESWhiteboardDrawView()<NTESCADisplayLinkHolderDelegate>
+
+@property(nonatomic, strong)NSMutableArray *myLines;
+@property(nonatomic, assign)BOOL shouldDraw;
+
+@property(nonatomic, strong)NTESCADisplayLinkHolder *displayLinkHolder;
+
+@end
+
+@implementation NTESWhiteboardDrawView
+
+#pragma mark - public methods
+- (id)initWithFrame:(CGRect)frame
+{
+    if (self = [super initWithFrame:frame]) {
+        _myLines = [[NSMutableArray alloc] init];
+        
+        CAShapeLayer *shapeLayer = (CAShapeLayer *)self.layer;
+        shapeLayer.strokeColor = [UIColor blackColor].CGColor;
+        shapeLayer.fillColor = [UIColor clearColor].CGColor;
+        shapeLayer.lineJoin = kCALineJoinRound;
+        shapeLayer.lineCap = kCALineCapRound;
+        shapeLayer.lineWidth = 2;
+        shapeLayer.masksToBounds = YES;
+        
+        _displayLinkHolder = [[NTESCADisplayLinkHolder alloc] init];
+        [_displayLinkHolder setFrameInterval:3];
+        [_displayLinkHolder startCADisplayLinkWithDelegate:self];
+    }
+    return self;
+}
+
+-(void)dealloc
+{
+    [_displayLinkHolder stop];
+}
+
+ (Class)layerClass
+{
+    return [CAShapeLayer class];
+}
+
+- (void)setLineColor:(UIColor *)color
+{
+    CAShapeLayer *shapeLayer = (CAShapeLayer *)self.layer;
+    shapeLayer.strokeColor = color.CGColor;
+}
+
+- (void)addPoints:(NSMutableArray *)points isNewLine:(BOOL)newLine
+{
+    __weak typeof(self) wself = self;
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [wself addPoints:points toLines:[wself myLines] isNewLine:newLine];
+    });
+}
+
+- (void)deleteLastLine
+{
+    __weak typeof(self) wself = self;
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [wself deleteLastLine:[wself myLines]];
+    });
+
+}
+
+- (void)deleteAllLines
+{
+    __weak typeof(self) wself = self;
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [wself deleteAllLines:[wself myLines]];
+    });
+}
+
+- (void)clear
+{
+    [self deleteAllLines];
+}
+
+#pragma mark - private methods
+- (void)addPoints:(NSMutableArray *)points
+          toLines:(NSMutableArray *)lines
+        isNewLine:(BOOL)newLine
+{
+    if (newLine) {
+        [lines addObject:points];
+    }
+    else if (lines.count == 0) {
+        [lines addObject:points];
+    }
+    else {
+        NSMutableArray *lastLine = [lines lastObject];
+        [lastLine addObjectsFromArray:points];
+    }
+    _shouldDraw = YES;
+}
+
+-(void)deleteLastLine:(NSMutableArray *)lines
+{
+    [lines removeLastObject];
+    _shouldDraw = YES;
+}
+
+-(void)deleteAllLines:(NSMutableArray *)lines
+{
+    [lines removeAllObjects];
+    _shouldDraw = YES;
+}
+
+- (void)onDisplayLinkFire:(NTESCADisplayLinkHolder *)holder
+                 duration:(NSTimeInterval)duration
+              displayLink:(CADisplayLink *)displayLink
+{
+    if (!_shouldDraw) {
+        return;
+    }
+    UIBezierPath *path = [[UIBezierPath alloc] init];
+    NSUInteger linesCount = _myLines.count;
+    for (NSUInteger i = 0 ; i < linesCount; i ++) {
+        NSArray *line = [_myLines objectAtIndex:i];
+        NSUInteger pointsCount = line.count;
+        for (NSUInteger j = 0 ; j < pointsCount; j ++) {
+            NSArray *point = [line objectAtIndex:j];
+            CGPoint p = CGPointMake([point[0] floatValue], [point[1] floatValue]);
+            if (j == 0) {
+                [path moveToPoint:p];
+            }
+            else {
+                [path addLineToPoint:p];
+            }
+        }
+    }
+    
+    ((CAShapeLayer *)self.layer).path = path.CGPath;
+    _shouldDraw = NO;
+}
+
+
+@end