Iphone 使用CGPDF查找PDF中的超链接
我试图在PDF文档中找到页面上的所有超链接，并在其上放置一个UIButton 我已经找到了下面的脚本，并在其中进行了尝试，应该可以做到这一点。它会查找超链接，并将其放置在不在链接顶部的位置。有人能告诉我为什么会这样吗 我附上了一张图片，显示按钮是如何关闭的。最上面的按钮应位于蓝色“大都会”文本的顶部，最下面的按钮应位于“SÆSONEN 2008-2009”文本的顶部 这是我用来查找链接和放置按钮的代码Iphone 使用CGPDF查找PDF中的超链接,iphone,objective-c,ipad,pdf,hyperlink,Iphone,Objective C,Ipad,Pdf,Hyperlink,我试图在PDF文档中找到页面上的所有超链接，并在其上放置一个UIButton 我已经找到了下面的脚本，并在其中进行了尝试，应该可以做到这一点。它会查找超链接，并将其放置在不在链接顶部的位置。有人能告诉我为什么会这样吗 我附上了一张图片，显示按钮是如何关闭的。最上面的按钮应位于蓝色“大都会”文本的顶部，最下面的按钮应位于“SÆSONEN 2008-2009”文本的顶部 这是我用来查找链接和放置按钮的代码 NSMutableArray *rectArrays; NSMutableAr
NSMutableArray *rectArrays;
NSMutableArray *storeURLs;
CGPDFPageRef pdfPage = CGPDFDocumentGetPage(_pdf, pageNumber);
CGPDFDictionaryRef pageDictionary = CGPDFPageGetDictionary(pdfPage);
CGPDFArrayRef outputArray;
if(!CGPDFDictionaryGetArray(pageDictionary, "Annots", &outputArray)) {
//break;
}
int arrayCount = 0;
arrayCount = CGPDFArrayGetCount(outputArray);
if(arrayCount > 0) {
for(int j = 0; j < arrayCount; ++j) {
CGPDFObjectRef aDictObj;
if(!CGPDFArrayGetObject(outputArray, j, &aDictObj)) {
return;
}
CGPDFDictionaryRef annotDict;
if(!CGPDFObjectGetValue(aDictObj, kCGPDFObjectTypeDictionary, &annotDict)) {
return;
}
CGPDFDictionaryRef aDict;
if(!CGPDFDictionaryGetDictionary(annotDict, "A", &aDict)) {
return;
}
CGPDFStringRef uriStringRef;
if(!CGPDFDictionaryGetString(aDict, "URI", &uriStringRef)) {
return;
}
CGPDFArrayRef rectArray;
if(!CGPDFDictionaryGetArray(annotDict, "Rect", &rectArray)) {
return;
}
int arrayCount = CGPDFArrayGetCount( rectArray );
CGPDFReal coords[4];
for(int k = 0; k < arrayCount; ++k) {
CGPDFObjectRef rectObj;
if(!CGPDFArrayGetObject(rectArray, k, &rectObj)) {
return;
}
CGPDFReal coord;
if(!CGPDFObjectGetValue(rectObj, kCGPDFObjectTypeReal, &coord)) {
return;
}
coords[k] = coord;
}
char *uriString = (char *)CGPDFStringGetBytePtr(uriStringRef);
NSString *uri = [NSString stringWithCString:uriString encoding:NSUTF8StringEncoding];
CGRect rect = CGRectMake(coords[0], coords[1], coords[2], coords[3]);
NSLog(@"Found: %f ; %f => %f x %f", coords[0], coords[1], coords[2], coords[3]);
CGPDFInteger pageRotate = 0;
CGPDFDictionaryGetInteger(pageDictionary, "Rotate", &pageRotate);
CGRect pageRect = CGRectIntegral( CGPDFPageGetBoxRect(pdfPage, kCGPDFMediaBox));
if(pageRotate == 90 || pageRotate == 270) {
CGFloat temp = pageRect.size.width;
pageRect.size.width = pageRect.size.height;
pageRect.size.height = temp;
}
rect.size.width = rect.size.width - rect.origin.x;
rect.size.height = rect.size.height - rect.origin.y;
CGAffineTransform trans = CGAffineTransformIdentity;
trans = CGAffineTransformTranslate(trans, 0, pageRect.size.height);
trans = CGAffineTransformScale(trans, 1.0, -1.0);
rect = CGRectApplyAffineTransform(rect, trans);
NSURL *url = [NSURL URLWithString:uri];
[rectArrays addObject:[NSValue valueWithCGRect:rect]];
[storeURLs addObject:url];
for(int i = 0; i <= [rectArrays count]; i++) {
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button setFrame:rect];
[button setTitle:@"Link" forState:UIControlStateNormal];
[[self view] addSubview:button];
NSLog(@"Added: %f ; %f => %f x %f", button.frame.origin.x, button.frame.origin.y, button.frame.size.width, button.frame.size.height);
}
}
}
viewRect.size.widthviewrex.origin.x CGPDFPageRef pdfPage = CGPDFDocumentGetPage(_pdf, pageNumber);
CGPDFDictionaryRef pageDictionary = CGPDFPageGetDictionary(pdfPage);
CGPDFArrayRef outputArray;
if(!CGPDFDictionaryGetArray(pageDictionary, "Annots", &outputArray)) {
//break;
}
int arrayCount = 0;
arrayCount = CGPDFArrayGetCount(outputArray);
if(arrayCount > 0) {
for(int j = 0; j < arrayCount; ++j) {
CGPDFObjectRef aDictObj;
if(!CGPDFArrayGetObject(outputArray, j, &aDictObj)) {
return;
}
CGPDFDictionaryRef annotDict;
if(!CGPDFObjectGetValue(aDictObj, kCGPDFObjectTypeDictionary, &annotDict)) {
return;
}
CGPDFDictionaryRef aDict;
if(!CGPDFDictionaryGetDictionary(annotDict, "A", &aDict)) {
return;
}
CGPDFStringRef uriStringRef;
if(!CGPDFDictionaryGetString(aDict, "URI", &uriStringRef)) {
return;
}
CGPDFArrayRef rectArray;
if(!CGPDFDictionaryGetArray(annotDict, "Rect", &rectArray)) {
return;
}
int arrayCount = CGPDFArrayGetCount( rectArray );
CGPDFReal coords[4];
for(int k = 0; k < arrayCount; ++k) {
CGPDFObjectRef rectObj;
if(!CGPDFArrayGetObject(rectArray, k, &rectObj)) {
return;
}
CGPDFReal coord;
if(!CGPDFObjectGetValue(rectObj, kCGPDFObjectTypeReal, &coord)) {
return;
}
coords[k] = coord;
}
char *uriString = (char *)CGPDFStringGetBytePtr(uriStringRef);
NSString *uri = [NSString stringWithCString:uriString encoding:NSUTF8StringEncoding];
CGRect rect = CGRectMake(coords[0], coords[1], coords[2], coords[3]);
CGPoint pdfPoint = CGPointMake(rect.origin.x, rect.origin.y);
CGPoint viewPoint = CGPointMake(0, 0);
CGRect cropBox = CGPDFPageGetBoxRect(pdfPage, kCGPDFCropBox);
int rotation = CGPDFPageGetRotationAngle(pdfPage);
CGRect pageRenderRect;
switch (rotation) {
case 90:
case -270:
pageRenderRect = CGRectMake(0, 0, 1024, 768);
viewPoint.x = pageRenderRect.size.width * (pdfPoint.y - cropBox.origin.y) / cropBox.size.height;
viewPoint.y = pageRenderRect.size.height * (pdfPoint.x - cropBox.origin.x) / cropBox.size.width;
break;
case 180:
case -180:
pageRenderRect = CGRectMake(0, 0, 768, 1024);
viewPoint.x = pageRenderRect.size.width * (cropBox.size.width - (pdfPoint.x - cropBox.origin.x)) / cropBox.size.width;
viewPoint.y = pageRenderRect.size.height * (pdfPoint.y - cropBox.origin.y) / cropBox.size.height;
break;
case -90:
case 270:
pageRenderRect = CGRectMake(0, 0, 1024, 768);
viewPoint.x = pageRenderRect.size.width * (cropBox.size.height - (pdfPoint.y - cropBox.origin.y)) / cropBox.size.height;
viewPoint.y = pageRenderRect.size.height * (cropBox.size.width - (pdfPoint.x - cropBox.origin.x)) / cropBox.size.width;
break;
case 0:
default:
pageRenderRect = CGRectMake(0, 0, 768, 1024);
viewPoint.x = pageRenderRect.size.width * (pdfPoint.x - cropBox.origin.x) / cropBox.size.width;
viewPoint.y = pageRenderRect.size.height * (cropBox.size.height - pdfPoint.y) / cropBox.size.height;
break;
}
viewPoint.x = viewPoint.x + pageRenderRect.origin.x;
viewPoint.y = viewPoint.y + pageRenderRect.origin.y;
CGRect viewRect = CGRectMake(viewPoint.x, viewPoint.y, rect.size.width, rect.size.height - rect.origin.y);
viewRect = CGRectMake(viewRect.origin.x, viewRect.origin.y - viewRect.size.height, viewRect.size.width, viewRect.size.height);
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setFrame:viewRect];
[button setBackgroundColor:[UIColor greenColor]];
[button setAlpha:0.65];
[button setTag:kPDFLinkButton];
[[self view] addSubview:button];
}
}
cgpdfageref pdfPage=CGPDFDocumentGetPage（_pdf，页码）；
CGPDFDictionaryRef pageDictionary=CGPDFPageGetDictionary（pdfPage）；
CGPDFArrayRef输出阵列；
if（！CGPDFDictionaryGetArray（页面字典、注释和输出阵列））{
//中断；
}
int arrayCount=0；
arrayCount=CGPDFArrayGetCount（输出阵列）；
如果（阵列计数>0）{
对于（int j=0；j- (void)getLinksFromPDF:(CGPDFDocumentRef)_pdf withPageNumber:(NSUInteger)pageNumber
{
CGPDFPageRef pdfPage = CGPDFDocumentGetPage(_pdf, pageNumber);
CGPDFDictionaryRef pageDictionary = CGPDFPageGetDictionary(pdfPage);
CGPDFArrayRef outputArray;
if(!CGPDFDictionaryGetArray(pageDictionary, "Annots", &outputArray)) {
//break;
}
int arrayCount = 0;
arrayCount = CGPDFArrayGetCount(outputArray);
if(arrayCount > 0) {
for(int j = 0; j < arrayCount; ++j) {
CGPDFObjectRef aDictObj;
if(!CGPDFArrayGetObject(outputArray, j, &aDictObj)) {
return;
}
CGPDFDictionaryRef annotDict;
if(!CGPDFObjectGetValue(aDictObj, kCGPDFObjectTypeDictionary, &annotDict)) {
return;
}
CGPDFDictionaryRef aDict;
if(!CGPDFDictionaryGetDictionary(annotDict, "A", &aDict)) {
return;
}
CGPDFStringRef uriStringRef;
if(!CGPDFDictionaryGetString(aDict, "URI", &uriStringRef)) {
return;
}
CGPDFArrayRef rectArray;
if(!CGPDFDictionaryGetArray(annotDict, "Rect", &rectArray)) {
return;
}
int arrayCount = CGPDFArrayGetCount( rectArray );
CGPDFReal coords[4];
for(int k = 0; k < arrayCount; ++k) {
CGPDFObjectRef rectObj;
if(!CGPDFArrayGetObject(rectArray, k, &rectObj)) {
return;
}
CGPDFReal coord;
if(!CGPDFObjectGetValue(rectObj, kCGPDFObjectTypeReal, &coord)) {
return;
}
coords[k] = coord;
}
char *uriString = (char *)CGPDFStringGetBytePtr(uriStringRef);
NSString *uri = [NSString stringWithCString:uriString encoding:NSUTF8StringEncoding];
CGPoint lowerLeft = [self convertPDFPointToViewPoint:CGPointMake(coords[0], coords[1])];
CGPoint upperRight = [self convertPDFPointToViewPoint:CGPointMake(coords[2], coords[3])];
// This is the rectangle positioned under the link
CGRect viewRect = CGRectMake(lowerLeft.x, lowerLeft.y, upperRight.x - lowerLeft.x, lowerLeft.y - upperRight.y);
// Now adjusting the rectangle to be on top of the link
viewRect = CGRectMake(viewRect.origin.x, viewRect.origin.y - viewRect.size.height, viewRect.size.width, viewRect.size.height);
NSLog(@"%@", uri);
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setFrame:viewRect];
[button setBackgroundColor:[UIColor greenColor]];
[button setAlpha:0.65];
[button setTag:kPDFLinkButton];
[[self view] addSubview:button];
}
}
}
- (CGPoint)convertPDFPointToViewPoint:(CGPoint)pdfPoint
{
CGPoint viewPoint = CGPointMake(0, 0);
CGPDFPageRef pdfPage = CGPDFDocumentGetPage(pdf, currentPage);
CGRect cropBox = CGPDFPageGetBoxRect(pdfPage, kCGPDFCropBox);
int rotation = CGPDFPageGetRotationAngle(pdfPage);
CGRect pageRenderRect;
switch (rotation) {
case 90:
case -270:
pageRenderRect = CGRectMake(0, 0, 1024, 768);
viewPoint.x = pageRenderRect.size.width * (pdfPoint.y - cropBox.origin.y) / cropBox.size.height;
viewPoint.y = pageRenderRect.size.height * (pdfPoint.x - cropBox.origin.x) / cropBox.size.width;
break;
case 180:
case -180:
pageRenderRect = CGRectMake(0, 0, 768, 1024);
viewPoint.x = pageRenderRect.size.width * (cropBox.size.width - (pdfPoint.x - cropBox.origin.x)) / cropBox.size.width;
viewPoint.y = pageRenderRect.size.height * (pdfPoint.y - cropBox.origin.y) / cropBox.size.height;
break;
case -90:
case 270:
pageRenderRect = CGRectMake(0, 0, 1024, 768);
viewPoint.x = pageRenderRect.size.width * (cropBox.size.height - (pdfPoint.y - cropBox.origin.y)) / cropBox.size.height;
viewPoint.y = pageRenderRect.size.height * (cropBox.size.width - (pdfPoint.x - cropBox.origin.x)) / cropBox.size.width;
break;
case 0:
default:
pageRenderRect = CGRectMake(0, 0, 768, 1024);
viewPoint.x = pageRenderRect.size.width * (pdfPoint.x - cropBox.origin.x) / cropBox.size.width;
viewPoint.y = pageRenderRect.size.height * (cropBox.size.height - pdfPoint.y) / cropBox.size.height;
break;
}
viewPoint.x = viewPoint.x + pageRenderRect.origin.x;
viewPoint.y = viewPoint.y + pageRenderRect.origin.y;
return viewPoint;
}
-（void）getLinksFromPDF:（CGPDFDocumentRef）\u带页码的pdf:（NSUInteger）页码
{
cgpdfageref pdfPage=CGPDFDocumentGetPage（_pdf，页码）；
CGPDFDictionaryRef pageDictionary=CGPDFPageGetDictionary（pdfPage）；
CGPDFArrayRef输出阵列；
如果（！CGPDFDICTIONARYGETARY（页面字典，“A
- (void)getLinksFromPDF:(CGPDFDocumentRef)_pdf withPageNumber:(NSUInteger)pageNumber
{
CGPDFPageRef pdfPage = CGPDFDocumentGetPage(_pdf, pageNumber);
CGPDFDictionaryRef pageDictionary = CGPDFPageGetDictionary(pdfPage);
CGPDFArrayRef outputArray;
if(!CGPDFDictionaryGetArray(pageDictionary, "Annots", &outputArray)) {
//break;
}
int arrayCount = 0;
arrayCount = CGPDFArrayGetCount(outputArray);
if(arrayCount > 0) {
for(int j = 0; j < arrayCount; ++j) {
CGPDFObjectRef aDictObj;
if(!CGPDFArrayGetObject(outputArray, j, &aDictObj)) {
return;
}
CGPDFDictionaryRef annotDict;
if(!CGPDFObjectGetValue(aDictObj, kCGPDFObjectTypeDictionary, &annotDict)) {
return;
}
CGPDFDictionaryRef aDict;
if(!CGPDFDictionaryGetDictionary(annotDict, "A", &aDict)) {
return;
}
CGPDFStringRef uriStringRef;
if(!CGPDFDictionaryGetString(aDict, "URI", &uriStringRef)) {
return;
}
CGPDFArrayRef rectArray;
if(!CGPDFDictionaryGetArray(annotDict, "Rect", &rectArray)) {
return;
}
int arrayCount = CGPDFArrayGetCount( rectArray );
CGPDFReal coords[4];
for(int k = 0; k < arrayCount; ++k) {
CGPDFObjectRef rectObj;
if(!CGPDFArrayGetObject(rectArray, k, &rectObj)) {
return;
}
CGPDFReal coord;
if(!CGPDFObjectGetValue(rectObj, kCGPDFObjectTypeReal, &coord)) {
return;
}
coords[k] = coord;
}
char *uriString = (char *)CGPDFStringGetBytePtr(uriStringRef);
NSString *uri = [NSString stringWithCString:uriString encoding:NSUTF8StringEncoding];
CGPoint lowerLeft = [self convertPDFPointToViewPoint:CGPointMake(coords[0], coords[1])];
CGPoint upperRight = [self convertPDFPointToViewPoint:CGPointMake(coords[2], coords[3])];
// This is the rectangle positioned under the link
CGRect viewRect = CGRectMake(lowerLeft.x, lowerLeft.y, upperRight.x - lowerLeft.x, lowerLeft.y - upperRight.y);
// Now adjusting the rectangle to be on top of the link
viewRect = CGRectMake(viewRect.origin.x, viewRect.origin.y - viewRect.size.height, viewRect.size.width, viewRect.size.height);
NSLog(@"%@", uri);
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setFrame:viewRect];
[button setBackgroundColor:[UIColor greenColor]];
[button setAlpha:0.65];
[button setTag:kPDFLinkButton];
[[self view] addSubview:button];
}
}
}
- (CGPoint)convertPDFPointToViewPoint:(CGPoint)pdfPoint
{
CGPoint viewPoint = CGPointMake(0, 0);
CGPDFPageRef pdfPage = CGPDFDocumentGetPage(pdf, currentPage);
CGRect cropBox = CGPDFPageGetBoxRect(pdfPage, kCGPDFCropBox);
int rotation = CGPDFPageGetRotationAngle(pdfPage);
CGRect pageRenderRect;
switch (rotation) {
case 90:
case -270:
pageRenderRect = CGRectMake(0, 0, 1024, 768);
viewPoint.x = pageRenderRect.size.width * (pdfPoint.y - cropBox.origin.y) / cropBox.size.height;
viewPoint.y = pageRenderRect.size.height * (pdfPoint.x - cropBox.origin.x) / cropBox.size.width;
break;
case 180:
case -180:
pageRenderRect = CGRectMake(0, 0, 768, 1024);
viewPoint.x = pageRenderRect.size.width * (cropBox.size.width - (pdfPoint.x - cropBox.origin.x)) / cropBox.size.width;
viewPoint.y = pageRenderRect.size.height * (pdfPoint.y - cropBox.origin.y) / cropBox.size.height;
break;
case -90:
case 270:
pageRenderRect = CGRectMake(0, 0, 1024, 768);
viewPoint.x = pageRenderRect.size.width * (cropBox.size.height - (pdfPoint.y - cropBox.origin.y)) / cropBox.size.height;
viewPoint.y = pageRenderRect.size.height * (cropBox.size.width - (pdfPoint.x - cropBox.origin.x)) / cropBox.size.width;
break;
case 0:
default:
pageRenderRect = CGRectMake(0, 0, 768, 1024);
viewPoint.x = pageRenderRect.size.width * (pdfPoint.x - cropBox.origin.x) / cropBox.size.width;
viewPoint.y = pageRenderRect.size.height * (cropBox.size.height - pdfPoint.y) / cropBox.size.height;
break;
}
viewPoint.x = viewPoint.x + pageRenderRect.origin.x;
viewPoint.y = viewPoint.y + pageRenderRect.origin.y;
return viewPoint;
}
- (CGPoint)convertPDFPointToViewPoint:(CGPoint)pdfPoint {
CGPoint viewPoint = CGPointMake(0, 0);
CGRect cropBox = CGPDFPageGetBoxRect(pdfPage, kCGPDFCropBox);
int rotation = CGPDFPageGetRotationAngle(pdfPage);
switch (rotation) {
case 90:
case -270:
viewPoint.x = pageRenderRect.size.width * (pdfPoint.y - cropBox.origin.y) / cropBox.size.height;
viewPoint.y = pageRenderRect.size.height * (pdfPoint.x - cropBox.origin.x) / cropBox.size.width;
break;
case 180:
case -180:
viewPoint.x = pageRenderRect.size.width * (cropBox.size.width - (pdfPoint.x - cropBox.origin.x)) / cropBox.size.width;
viewPoint.y = pageRenderRect.size.height * (pdfPoint.y - cropBox.origin.y) / cropBox.size.height;
break;
case -90:
case 270:
viewPoint.x = pageRenderRect.size.width * (cropBox.size.height - (pdfPoint.y - cropBox.origin.y)) / cropBox.size.height;
viewPoint.y = pageRenderRect.size.height * (cropBox.size.width - (pdfPoint.x - cropBox.origin.x)) / cropBox.size.width;
break;
case 0:
default:
viewPoint.x = pageRenderRect.size.width * (pdfPoint.x - cropBox.origin.x) / cropBox.size.width;
viewPoint.y = pageRenderRect.size.height * (cropBox.size.height - pdfPoint.y) / cropBox.size.height;
break;
}
viewPoint.x = viewPoint.x + pageRenderRect.origin.x;
viewPoint.y = viewPoint.y + pageRenderRect.origin.y;
return viewPoint;
}