commit - cb71f9f244da8cf54205b4b31904f729d9ed6f82
commit + 6f7574b1fe03cfa5eec20f861309ad858032e576
blob - 62ebe0575fee7d7abe32d37247262bf874970de0
blob + 00a1ab9a4e6eff0bd830c81a806c0811221f99ce
--- ComicSaver/ComicSaverView.h
+++ ComicSaver/ComicSaverView.h
@interface ComicSaverView : ScreenSaverView
{
CGPDFDocumentRef document;
- CGPDFPageRef page;
+ long numberOfPages;
+ long currentPage;
+
+ NSMutableArray *pages;
+
+ CGFloat offset;
}
@end
blob - e860e423f77917c12ad3834b63486eb195aea14d
blob + 90685bb31194a852eb892780f8060df7f1358f01
--- ComicSaver/ComicSaverView.m
+++ ComicSaver/ComicSaverView.m
self = [super initWithFrame:frame isPreview:isPreview];
if (self) {
- // [self setAnimationTimeInterval:1/30.0];
+ NSString *localPath = @"/Documents/Shared/Comics/Letter 44/letter44_vol1_1412097863.pdf";
+ NSString *docPath = [NSString stringWithFormat:@"%@%@", NSHomeDirectory(), localPath];
+ document = getPDFDocument (docPath);
+ numberOfPages = CGPDFDocumentGetNumberOfPages (document);
+ currentPage = 1;
+
+ pages = [[NSMutableArray alloc] init];
+
+ [self setAnimationTimeInterval:1/500.0];
}
return self;
}
- (void)startAnimation
{
- NSString *localPath = @"/Documents/Shared/Comics/Letter 44/letter44_vol1_1412097863.pdf";
- NSString *docPath = [NSString stringWithFormat:@"%@%@", NSHomeDirectory(), localPath];
- document = MyGetPDFDocumentRef ([docPath UTF8String]);
- long numberOfPages = CGPDFDocumentGetNumberOfPages (document);
- page = CGPDFDocumentGetPage (document, (random()%numberOfPages)+1);
+ currentPage = 1;
+ offset = 0.0;
+
[super startAnimation];
}
- (void)stopAnimation
{
[super stopAnimation];
+
+ for(id pageRef in pages) CGPDFPageRelease((CGPDFPageRef)pageRef);
CGPDFDocumentRelease (document);
}
- (void)drawRect:(NSRect)rect
{
- CGRect cropBox = CGPDFPageGetBoxRect(page, kCGPDFCropBox);
+ if(!numberOfPages) return;
CGContextRef context = (CGContextRef) [[NSGraphicsContext currentContext] graphicsPort];
- CGRect clip = CGContextGetClipBoundingBox(context);
+ //printf("display size: [%f,%f]\n", rect.size.width, rect.size.height);
- CGContextSetRGBFillColor(context, 1.0, 1.0, 1.0, 1.0);
- CGContextFillRect(context, clip);
- CGContextTranslateCTM(context, 0.0, 0.0);
- CGContextScaleCTM(context, 1.0, 1.0);
+// CGContextSetRGBFillColor(context, 1.0, 1.0, 1.0, 1.0);
+// CGContextFillRect(context, rect);
- CGFloat xScale = clip.size.width / cropBox.size.width;
- CGFloat yScale = clip.size.height / cropBox.size.height;
- CGFloat scaleToApply = xScale < yScale ? xScale : yScale;
- CGContextConcatCTM(context, CGAffineTransformMakeScale(scaleToApply, scaleToApply));
- // CGContextConcatCTM(context, CGPDFPageGetDrawingTransform(page, kCGPDFCropBox, clip, 0, true));
- CGContextDrawPDFPage (context, page);
+
+ CGFloat pageOffset = offset;
+ long visiblePage = 0;
+ while(numberOfPages > (currentPage + visiblePage) && pageOffset < rect.size.width) {
+ CGPDFPageRef page = nil;
+
+ // printf("page %lu/%lu\n", visiblePage, [pages count]);
+
+ if(visiblePage < [pages count])
+ page = (__bridge CGPDFPageRef)([pages objectAtIndex:visiblePage]);
+
+ if(page == nil) {
+ printf("adding page %lu\n", currentPage + (visiblePage));
+ page = CGPDFDocumentGetPage (document, currentPage + visiblePage);
+ [pages addObject:(__bridge id)(page)];
+ }
+
+ CGContextSaveGState(context);
+ CGRect cropBox = CGPDFPageGetBoxRect(page, kCGPDFCropBox);
+
+ CGContextTranslateCTM(context, pageOffset, 0.0);
+ CGContextScaleCTM(context, 1.0, 1.0);
+
+ CGFloat xScale = rect.size.width / cropBox.size.width;
+ CGFloat yScale = rect.size.height / cropBox.size.height;
+ CGFloat scaleToApply = xScale < yScale ? xScale : yScale;
+ CGContextScaleCTM(context, scaleToApply, scaleToApply);
+
+ if(pageOffset + (cropBox.size.width * scaleToApply) <= 0) {
+ printf("removing page\n");
+ CGPDFPageRelease((CGPDFPageRef)[pages objectAtIndex:0]);
+ [pages removeObjectAtIndex:0];
+ currentPage += 1;
+ pageOffset = offset = pageOffset + (cropBox.size.width * scaleToApply);
+ } else {
+ CGContextDrawPDFPage (context, page);
+ pageOffset += cropBox.size.width * scaleToApply;
+ visiblePage ++;
+ }
+ CGContextRestoreGState(context);
+
+ }
+
+ offset -= 3;
+
}
- (void)animateOneFrame
return nil;
}
-CGPDFDocumentRef MyGetPDFDocumentRef (const char *filename)
+CGPDFDocumentRef getPDFDocument (NSString* filename)
{
CFStringRef path;
CFURLRef url;
CGPDFDocumentRef document;
- size_t count;
- path = CFStringCreateWithCString (NULL, filename,
- kCFStringEncodingUTF8);
- url = CFURLCreateWithFileSystemPath (NULL, path, // 1
- kCFURLPOSIXPathStyle, 0);
+ path = CFStringCreateWithCString (NULL, [filename UTF8String], kCFStringEncodingUTF8);
+ url = CFURLCreateWithFileSystemPath (NULL, path, kCFURLPOSIXPathStyle, 0);
+
CFRelease (path);
- document = CGPDFDocumentCreateWithURL (url);// 2
+ document = CGPDFDocumentCreateWithURL (url);
CFRelease(url);
- count = CGPDFDocumentGetNumberOfPages (document);// 3
- if (count == 0) {
- printf("`%s' needs at least one page!", filename);
- return NULL;
- }
+
return document;
}
+
+NSArray* getListOfPDFs(NSString *sourcePath)
+{
+ NSArray* dirs = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:sourcePath error:NULL];
+
+ NSMutableArray *pdfFiles = [[NSMutableArray alloc] init];
+ [dirs enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
+ NSString *filename = (NSString *)obj;
+ NSString *extension = [[filename pathExtension] lowercaseString];
+ if ([extension isEqualToString:@"pdf"]) {
+ [pdfFiles addObject:[sourcePath stringByAppendingPathComponent:filename]];
+ }
+ }];
+ return pdfFiles;
+}
+
@end
\ No newline at end of file
