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Diffstat (limited to 'src/osx/PreviewController.m')
-rw-r--r-- | src/osx/PreviewController.m | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/src/osx/PreviewController.m b/src/osx/PreviewController.m new file mode 100644 index 0000000..e54a91f --- /dev/null +++ b/src/osx/PreviewController.m @@ -0,0 +1,137 @@ +// +// PreviewController.m +// TikZiT +// +// Copyright 2010 Aleks Kissinger. All rights reserved. +// +// +// This file is part of TikZiT. +// +// TikZiT is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// TikZiT is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with TikZiT. If not, see <http://www.gnu.org/licenses/>. +// + +#import "PreviewController.h" +#import "AppDelegate.h" +#import "PreambleController.h" +#import <Quartz/Quartz.h> + +@implementation PreviewController + +static PreviewController *preview = nil; + +- (id)initWithWindowNibName:(NSString*)nib + preambleController:(PreambleController*)pc + tempDir:(NSString*)dir { + [super initWithWindowNibName:nib]; + tempDir = [dir copy]; + typesetCount = 0; + preambleController = pc; + latexLock = [[NSLock alloc] init]; + return self; +} + +- (void)runLatex:(id)tikz { + // Only build one tex file at a time, so we don't get funky results. + [latexLock lock]; + [progressIndicator startAnimation:self]; + + int fnum = typesetCount++; + + NSString *tex = [NSString stringWithFormat:@"%@%@%@", + [preambleController currentPreamble], + tikz, + [preambleController currentPostamble]]; + + NSString *texFile = [NSString stringWithFormat:@"%@/tikzit_%d.tex", tempDir, fnum]; + NSString *pdfFile = [NSString stringWithFormat:@"%@/tikzit_%d.pdf", tempDir, fnum]; + + [tex writeToFile:texFile atomically:NO encoding:NSUTF8StringEncoding error:NULL]; + + // We run pdflatex in a bash shell to have easy access to the setup from unix-land + NSTask *latexTask = [[NSTask alloc] init]; + [latexTask setCurrentDirectoryPath:tempDir]; + [latexTask setLaunchPath:@"/bin/bash"]; + + // This assumes the user has $PATH set up to find pdflatex in either .profile + // or .bashrc. This should be improved to take other path setups into account + // and to be customisable. + NSString *latexCmd = + [NSString stringWithFormat: + @"if [ -e ~/.profile ]; then source ~/.profile; fi\n" + @"if [ -e ~/.bashrc ]; then source ~/.bashrc; fi\n" + @"pdflatex -interaction=nonstopmode -halt-on-error '%@'\n", + texFile]; + + NSPipe *pout = [NSPipe pipe]; + NSPipe *pin = [NSPipe pipe]; + [latexTask setStandardOutput:pout]; + [latexTask setStandardInput:pin]; + + NSFileHandle *latexIn = [pin fileHandleForWriting]; + NSFileHandle *latexOut = [pout fileHandleForReading]; + + [latexTask launch]; + [latexIn writeData:[latexCmd dataUsingEncoding:NSUTF8StringEncoding]]; + [latexIn closeFile]; + [latexTask waitUntilExit]; + + NSData *data = [latexOut readDataToEndOfFile]; + NSString *str = [[NSString alloc] initWithData:data + encoding:NSUTF8StringEncoding]; + + if ([latexTask terminationStatus] != 0) { + [errorTextView setHidden:YES]; + errorText.string = [@"\nAN ERROR HAS OCCURRED, PDFLATEX SAID:\n\n" stringByAppendingString:str]; + [errorTextView setHidden:NO]; + } else { + errorText.string = @""; + [errorTextView setHidden:YES]; + + data = [NSData dataWithContentsOfFile:pdfFile]; + PDFDocument *doc = [[PDFDocument alloc] initWithData:data]; + + // pad the PDF by a couple of pixels + if ([doc pageCount] >= 1) { + PDFPage *page = [doc pageAtIndex:0]; + NSRect box = [page boundsForBox:kPDFDisplayBoxCropBox]; + box.origin.x -= 2.0f; + box.origin.y -= 2.0f; + box.size.width += 4.0f; + box.size.height += 4.0f; + [page setBounds:box forBox:kPDFDisplayBoxCropBox]; + [page setBounds:box forBox:kPDFDisplayBoxMediaBox]; + } + + [pdfView setDocument:doc]; + } + + [progressIndicator stopAnimation:self]; + [latexLock unlock]; +} + +- (void)buildTikz:(NSString*)tikz { + // Build on a separate thread to keep the interface responsive. + [NSThread detachNewThreadSelector:@selector(runLatex:) toTarget:self withObject:tikz]; +} + ++ (void)setDefaultPreviewController:(PreviewController*)pc { + preview = pc; +} + ++ (PreviewController*)defaultPreviewController { + return preview; +} + + +@end |