我正在使用drawpdf函数在ios应用程序中生成pdf,同时在nsobject类中调用drawtext函数,它会根据我指定的框架和字符串清楚地绘制文本。
我的代码是
+(void)drawText:(NSString*)textToDraw inFrame:(CGRect)frameRect
{
CFStringRef stringRef = (__bridge CFStringRef)textToDraw;
// Prepare the text using a Core Text Framesetter
CFAttributedStringRef currentText = CFAttributedStringCreate(NULL, stringRef, NULL);
CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString(currentText);
CGMutablePathRef framePath = CGPathCreateMutable();
CGPathAddRect(framePath, NULL, frameRect);
// Get the frame that will do the rendering.
CFRange currentRange = CFRangeMake(0, 0);
CTFrameRef frameRef = CTFramesetterCreateFrame(framesetter, currentRange, framePath, NULL);
CGPathRelease(framePath);
// Get the graphics context.
CGContextRef currentContext = UIGraphicsGetCurrentContext();
// Put the text matrix into a known state. This ensures
// that no old scaling factors are left in place.
CGContextSetTextMatrix(currentContext, CGAffineTransformIdentity);
// Core Text draws from the bottom-left corner up, so flip
// the current transform prior to drawing.
CGContextTranslateCTM(currentContext, 0, frameRect.origin.y*2);
CGContextScaleCTM(currentContext, 1.0, -1.0);
// Draw the frame.
CTFrameDraw(frameRef, currentContext);
CGContextScaleCTM(currentContext, 1.0, -1.0);
CGContextTranslateCTM(currentContext, 0, (-1)*frameRect.origin.y*2);
CFRelease(frameRef);
CFRelease(stringRef);
CFRelease(framesetter);
}
但我需要将文本字体大小设置得更大更粗。
我用了
CGContextSelectFont(currentContext, "Helvetica", 20, kCGEncodingMacRoman);
和
CGContextSetFontSize ( currentContext, 20);
参考上述函数中mr.texian提供的答案,但没有变化
我在 uiwebview 中显示生成的 pdf。
我从网上得到了这段代码。我不知道在哪里编辑字体设置的代码。任何帮助将不胜感激。