diff options
Diffstat (limited to 'src/linux/PreviewRenderer.m')
| -rw-r--r-- | src/linux/PreviewRenderer.m | 207 |
1 files changed, 0 insertions, 207 deletions
diff --git a/src/linux/PreviewRenderer.m b/src/linux/PreviewRenderer.m deleted file mode 100644 index 5333d65..0000000 --- a/src/linux/PreviewRenderer.m +++ /dev/null @@ -1,207 +0,0 @@ -/* - * Copyright 2011 Alex Merry <dev@randomguy3.me.uk> - * - * This program 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 2 of - * the License, or (at your option) any later version. - * - * This program 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 this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#import "PreviewRenderer.h" -#import "CairoRenderContext.h" - -@implementation PreviewRenderer - -- (id) init { - [self release]; - self = nil; - return nil; -} - -- (id) initWithPreambles:(Preambles*)p { - self = [super init]; - - if (self) { - document = nil; - preambles = [p retain]; - pdfDocument = NULL; - pdfPage = NULL; - } - - return self; -} - -- (BOOL) update { - NSError *error = nil; - BOOL result = [self updateWithError:&error]; - if (error) { - logError (error, @"Could not update preview"); - if ([error code] == TZ_ERR_TOOL_FAILED) { - NSLog (@"Output: %@", [[error userInfo] objectForKey:TZToolOutputErrorKey]); - } - } - return result; -} - -- (BOOL) updateWithError:(NSError**)error { - if (document == nil) { - if (error) { - *error = [NSError errorWithMessage:@"No document given" code:TZ_ERR_BADSTATE]; - } - if (pdfDocument) { - g_object_unref (pdfDocument); - pdfDocument = NULL; - } - if (pdfPage) { - g_object_unref (pdfPage); - pdfPage = NULL; - } - return NO; - } - - NSString *tex = [NSString stringWithFormat:@"%@%@%@", - [preambles currentPreamble], - [document tikz], - [preambles currentPostamble]]; - - NSString *tempDir = [[NSFileManager defaultManager] createTempDirectoryWithError:error]; - if (!tempDir) { - if (error) { - *error = [NSError errorWithMessage:@"Could not create temporary directory" code:TZ_ERR_IO cause:*error]; - } - return NO; - } - - // write tex code to temporary file - NSString *texFile = [NSString stringWithFormat:@"%@/tikzit.tex", tempDir]; - NSString *pdfFile = [NSString stringWithFormat:@"file://%@/tikzit.pdf", tempDir]; - [tex writeToFile:texFile atomically:YES]; - - // run pdflatex in a bash shell - NSTask *latexTask = [[NSTask alloc] init]; - [latexTask setCurrentDirectoryPath:tempDir]; - [latexTask setLaunchPath:@"/bin/bash"]; - - // This assumes the user has $PATH set up to find pdflatex - // This should be improved to take other path setups into account - // and to be customisable. - NSString *latexCmd = [NSString stringWithFormat: - @"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]; - - BOOL success = NO; - - if ([latexTask terminationStatus] != 0) { - if (error) { - NSMutableDictionary *errorDetail = [NSMutableDictionary dictionaryWithCapacity:2]; - [errorDetail setValue:@"Generating a PDF file with pdflatex failed" forKey:NSLocalizedDescriptionKey]; - [errorDetail setValue:str forKey:TZToolOutputErrorKey]; - *error = [NSError errorWithDomain:TZErrorDomain code:TZ_ERR_TOOL_FAILED userInfo:errorDetail]; - } - } else { - // load pdf document - GError* gerror = NULL; - pdfDocument = poppler_document_new_from_file([pdfFile UTF8String], NULL, &gerror); - if (!pdfDocument) { - if (error) { - *error = [NSError errorWithMessage:[NSString stringWithFormat:@"Could not load PDF document", pdfFile] - code:TZ_ERR_IO - cause:[NSError errorWithGError:gerror]]; - } - g_error_free(gerror); - } else { - pdfPage = poppler_document_get_page(pdfDocument, 0); - if(!pdfPage) { - if (error) { - *error = [NSError errorWithMessage:@"Could not open first page of PDF document" - code:TZ_ERR_OTHER]; - } - g_object_unref(pdfDocument); - } else { - success = YES; - } - } - } - - // remove all temporary files - [[NSFileManager defaultManager] removeFileAtPath:tempDir handler:NULL]; - - return success; -} - -- (BOOL) isValid { - return pdfPage ? YES : NO; -} - -- (Preambles*) preambles { - return preambles; -} - -- (TikzDocument*) document { - return document; -} - -- (void) setDocument:(TikzDocument*)doc { - [doc retain]; - [document release]; - document = doc; -} - -- (double) width { - double w = 0.0; - if (pdfPage) - poppler_page_get_size(pdfPage, &w, NULL); - return w; -} - -- (double) height { - double h = 0.0; - if (pdfPage) - poppler_page_get_size(pdfPage, NULL, &h); - return h; -} - -- (void) renderWithContext:(id<RenderContext>)c onSurface:(id<Surface>)surface { - if (document != nil) { - CairoRenderContext *context = (CairoRenderContext*)c; - - [context saveState]; - [context applyTransform:[surface transformer]]; - - // white-out - [context paintWithColor:WhiteRColor]; - - poppler_page_render (pdfPage, [context cairoContext]); - - [context restoreState]; - } -} - -@end - -// vim:ft=objc:ts=8:et:sts=4:sw=4 |