单行及多行图文混排，聊天应用较常用，本文只提供算法。(四)
HeightDefault);
}
UILabel *l = [[UILabel alloc] initWithFrame:CGRectMake(viewWidth,
self.previousHeight,
width,
kChatTextHeightDefault)];
l.backgroundColor = [UIColor clearColor];
l.font = kFontOfSize(fontSize);
l.text = text;
l.textColor = color;
l.lineBreakMode = NSLineBreakByCharWrapping;
// l.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleBottomMargin;
[self addSubview:l];
if (line == [sectionStrs count] - 1)
{
// Last Line, recode width.
viewWidth += width;
}
line++;
}
}
break;
case kChatRoomRemoteDynamicImage:
case kChatRoomLocalDynamicImage:
{
NSString *imageStr = [self chatImagePath:dict];
CGFloat imageWidth = [self chatImageWidth:dict];
CGFloat imageHeight = [self chatImageHeight:dict];
CGFloat imagePaddingX = [self chatImagePaddingX:dict];
CGFloat imagePaddingY = [self chatImagePaddingY:dict];
if (viewWidth + imageWidth > kChatViewWidthMax)
{
// new line
self.previousHeight += viewHeightMax;
viewHeightMax = MAX(viewHeightMax, imageHeight);
viewWidth = 0.0f;
}
imageStr = [imageStr substringFromIndex:kChatCutOffContentLocalDynamicImageType.length];
// LOGINFO(@"imageStr = %@", imageStr);
UIImageView *imageView = [[UIImageView alloc] initWithFrame:
CGRectMake(viewWidth + imagePaddingX,
self.previousHeight + imagePaddingY,
imageWidth,
imageHeight)];
imageView.image = [UIImage sd_animatedGIFNamed:imageStr];
[self addSubview:imageView];
viewWidth += imageWidth;
viewWidth += imagePaddingX;
viewHeightMax = MAX(imageHeight, viewHeightMax);
}
break;
case kChatRoomLocalStaticImage:
case kChatRoomRemoteStaticImage:
{
NSString *imageStr = [self chatImagePath:dict];
CGFloat imageWidth = [self chatImageWidth:dict];
CGFloat imageHeight = [self chatImageHeight:dict];
CGFloat imagePaddingX = [self chatImagePaddingX:dict];
CGFloat imagePaddingY = [self chatImagePaddingY:dict];
// LOGINFO(@"imageStr = %@", imageStr);
if (viewWidth + imageWidth > kChatViewWidthMax)
{
// new line
self.previousHeight += viewHeightMax;
viewHeightMax = MAX(viewHeightMax, imageHeight);
viewWidth = 0.0f;
}
imageStr = [imageStr substringFromIndex:kChatCutOffContentRemoteStillImageType.length];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:
CGRectMake(viewWidth + imagePaddingX,
self.previousHeight + imagePaddingY,
imageWidth,
imageHeight)];
[imageView setImageWithURL:[NSURL URLWithString:imageStr] placeholderImage:nil];
[self addSubview:imageView];
viewWidth += imageWidth;
viewWidth += imagePaddingX;
viewHeightMax = MAX(imageHeight, viewHeightMax);
}
break;
default:
break;
}
}
CGFloat totalHeight = self.previousHeight + viewHeightMax;
if (totalHeight == 0.0f)
{
// Text Single Line;
totalHeight = kChatTextHeightDefault;
}
self.frame = CGRectMake(self.padding, 0.0f, kChatViewWidthMax, totalHeight);
return totalHeight;
}
- (NSArray *)splitString:(NSString *)str start:(CGFloat)loc size:(CGFloat)fontSize
{
NSMutableArray *array = [NSMutableArray arrayWithCapacity:0];
NSUInteger i = 1;
NSUInteger location = 0;
NSUInteger startPoint = 0;
CGFloat startPaddingX = loc;
// LOGINFO(@"str = %@ padding = %.2f", str, x)
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