/* NSPrintOperation.m Controls operations generating print jobs. Copyright (C) 1996,2004 Free Software Foundation, Inc. Author: Scott Christley Date: 1996 Author: Fred Kiefer Date: November 2000 Started implementation. Modified for Printing Backend Support Author: Chad Hardin Date: June 2004 This file is part of the GNUstep GUI Library. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; see the file COPYING.LIB. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include #include "config.h" #include #include #include #include #include #include #include #include #include #include #include "AppKit/AppKitExceptions.h" #include "AppKit/NSAffineTransform.h" #include "AppKit/NSApplication.h" #include "AppKit/NSGraphicsContext.h" #include "AppKit/NSView.h" #include "AppKit/NSPrinter.h" #include "AppKit/NSPrintPanel.h" #include "AppKit/NSPrintInfo.h" #include "AppKit/NSPrintOperation.h" #include "AppKit/NSWorkspace.h" #include "AppKit/PSOperators.h" #include "GNUstepGUI/GSEPSPrintOperation.h" #include "GNUstepGUI/GSPDFPrintOperation.h" #include "GNUstepGUI/GSPrintOperation.h" #define NSNUMBER(a) [NSNumber numberWithInt: (a)] #define NSFNUMBER(a) [NSNumber numberWithFloat: (a)] /* Local pagination variables needed while printing */ typedef struct _page_info_t { NSRect scaledBounds; /* View's rect scaled by the user specified scale and page fitting */ NSRect paperBounds; /* Print area of a page in default user space, possibly rotated if printing Landscape */ NSRect sheetBounds; /* Print are of a page in default user space */ NSSize paperSize; /* Size of the paper */ int xpages, ypages; int first, last; double pageScale; /* Scaling determined from page fitting */ double printScale; /* User specified scaling */ double nupScale; /* Scale required to fit nup pages on the sheet */ int nup; /* Number up pages to print on a sheet */ double lastWidth, lastHeight; NSPrintingOrientation orient; int pageDirection; /* NSPrintPageDirection */ } page_info_t; @interface NSPrintOperation (TrulyPrivate) - (BOOL) _runOperation; - (void) _setupPrintInfo; - (void)_printOperationDidRun:(NSPrintOperation *)printOperation success:(BOOL)success contextInfo:(void *)contextInfo; - (void) _printPaginateWithInfo: (page_info_t *)info knowsRange: (BOOL)knowsRange; - (NSRect) _rectForPage: (int)page info: (page_info_t *)info xpage: (int *)xptr ypage: (int *)yptr; - (NSRect) _adjustPagesFirst: (int)first last: (int)last info: (page_info_t *)info; - (void) _print; @end @interface NSView (NSPrintOperation) - (void) _displayPageInRect: (NSRect)pageRect atPlacement: (NSPoint)location withInfo: (page_info_t)info; - (void) _endSheet; @end @interface NSView (NPrintOperationPrivate) - (void) _cleanupPrinting; @end static NSString *NSPrintOperationThreadKey = @"NSPrintOperationThreadKey"; /** Class Description

NSPrintOperation controls printing of an NSView. When invoked normally it will (optionally) display a standard print panel (NSPrintPanel), and based on the information entered by the user here as well as information about page layout (see NSPageLayout) tells the NSView to print it's contents. NSPrintOperation works with the NSView to paginate the output into appropriately sized and oriented pages and finally delivers the result to the appropriate place, whether it be a printer, and PostScript file, or another output.

*/ @implementation NSPrintOperation // // Class methods // + (void)initialize { if (self == [NSPrintOperation class]) { // Initial version [self setVersion:1]; } } // // Creating and Initializing an NSPrintOperation Object // + (NSPrintOperation *)EPSOperationWithView:(NSView *)aView insideRect:(NSRect)rect toData:(NSMutableData *)data { return [self EPSOperationWithView: aView insideRect: rect toData: data printInfo: nil]; } + (NSPrintOperation *)EPSOperationWithView:(NSView *)aView insideRect:(NSRect)rect toData:(NSMutableData *)data printInfo:(NSPrintInfo *)aPrintInfo { return AUTORELEASE([[GSEPSPrintOperation alloc] initWithView: aView insideRect: rect toData: data printInfo: aPrintInfo]); } + (NSPrintOperation *)EPSOperationWithView:(NSView *)aView insideRect:(NSRect)rect toPath:(NSString *)path printInfo:(NSPrintInfo *)aPrintInfo { return AUTORELEASE([[GSEPSPrintOperation alloc] initWithView: aView insideRect: rect toPath: path printInfo: aPrintInfo]); } + (NSPrintOperation *)printOperationWithView:(NSView *)aView { return [self printOperationWithView: aView printInfo: nil]; } + (NSPrintOperation *)printOperationWithView:(NSView *)aView printInfo:(NSPrintInfo *)aPrintInfo { return AUTORELEASE([[GSPrintOperation alloc] initWithView: aView printInfo: aPrintInfo]); } + (NSPrintOperation *)PDFOperationWithView:(NSView *)aView insideRect:(NSRect)rect toData:(NSMutableData *)data { return [self PDFOperationWithView: aView insideRect: rect toData: data printInfo: nil]; } + (NSPrintOperation *)PDFOperationWithView:(NSView *)aView insideRect:(NSRect)rect toData:(NSMutableData *)data printInfo:(NSPrintInfo*)aPrintInfo { return AUTORELEASE([[GSPDFPrintOperation alloc] initWithView: aView insideRect: rect toData: data printInfo: aPrintInfo]); } + (NSPrintOperation *)PDFOperationWithView:(NSView *)aView insideRect:(NSRect)rect toPath:(NSString *)path printInfo:(NSPrintInfo*)aPrintInfo { return AUTORELEASE([[GSPDFPrintOperation alloc] initWithView: aView insideRect: rect toPath: path printInfo: aPrintInfo]); } // // Setting the Print Operation // /** Returns the NSPrintOperation object that is currently performing a print operation (if any). */ + (NSPrintOperation *)currentOperation { NSMutableDictionary *dict = [[NSThread currentThread] threadDictionary]; return (NSPrintOperation*)[dict objectForKey: NSPrintOperationThreadKey]; } /** Set the current NSPrintOperation to the supplied operation object. As this is currently implemented, if a NSPrintOperation is currently running, that operation is lost (along with any associated context), so be careful to call this only when there is no current operation. */ + (void)setCurrentOperation:(NSPrintOperation *)operation { NSMutableDictionary *dict = [[NSThread currentThread] threadDictionary]; if (operation == nil) [dict removeObjectForKey: NSPrintOperationThreadKey]; else [dict setObject: operation forKey: NSPrintOperationThreadKey]; } // // Instance methods // // // Creating and Initializing an NSPrintOperation Object // - (id)initEPSOperationWithView:(NSView *)aView insideRect:(NSRect)rect toData:(NSMutableData *)data printInfo:(NSPrintInfo *)aPrintInfo { RELEASE(self); return [[GSEPSPrintOperation alloc] initWithView: aView insideRect: rect toData: data printInfo: aPrintInfo]; } - (id)initWithView:(NSView *)aView printInfo:(NSPrintInfo *)aPrintInfo { RELEASE(self); return [[GSPrintOperation alloc] initWithView: aView printInfo: aPrintInfo]; } - (void) dealloc { RELEASE(_printInfo); RELEASE(_view); RELEASE(_data); TEST_RELEASE(_context); TEST_RELEASE(_printPanel); TEST_RELEASE(_accessoryView); TEST_RELEASE(_path); [super dealloc]; } // // Determining the Type of Operation // /** Returns YES if the receiver is performing an operation whose output is EPS format. */ - (BOOL)isEPSOperation { return NO; } - (BOOL)isCopyingOperation { return NO; } // // Controlling the User Interface // /** Returns the NSPrintPanel associated with the receiver. */ - (NSPrintPanel *)printPanel { if (_printPanel == nil) ASSIGN(_printPanel, [NSPrintPanel printPanel]); return _printPanel; } /** Returns YES if the reciever display an NSPrintPanel and other information when running a print operation. */ - (BOOL)showPanels { return _showPanels; } /** Sets the NSPrintPanel used by the receiver obtaining and displaying printing information from/to the user. */ - (void)setPrintPanel:(NSPrintPanel *)panel { ASSIGN(_printPanel, panel); } /** Use this to set whether a print panel is displayed during a printing operation. If set to NO, then the receiver uses information that was previously set and does not display any status information about the progress of the printing operation. */ - (void)setShowPanels:(BOOL)flag { _showPanels = flag; } /** Returns the accessory view used by the NSPrintPanel associated with the receiver. */ - (NSView *)accessoryView { return _accessoryView; } /** Set the accessory view used by the NSPrintPanel associated with the receiver. */ - (void)setAccessoryView:(NSView *)aView { ASSIGN(_accessoryView, aView); } // // Managing the drawing Context // /** This method is used by the print operation to create a special graphics context for use while running the print operation. */ - (NSGraphicsContext*)createContext { [self subclassResponsibility: _cmd]; return nil; } /** Returns the graphic contexts used by the print operation. */ - (NSGraphicsContext *)context { return _context; } /** This method is used by the print operation to destroy the special graphic context used while running the print operation. */ - (void)destroyContext { DESTROY(_context); } // // Page Information // /** Returns the page currently being printing. Returns 0 if no page is currently being printed */ - (int)currentPage { return _currentPage; } /** Returns the page order of printing. */ - (NSPrintingPageOrder)pageOrder { return _pageOrder; } /** Set the page order used when printing. */ - (void)setPageOrder:(NSPrintingPageOrder)order { _pageOrder = order; } // // Running a Print Operation // /** Called by the print operation after it has finished running a printing operation. */ - (void)cleanUpOperation { [[self printPanel] orderOut: self]; _currentPage = 0; [NSPrintOperation setCurrentOperation: nil]; } /** Called by the print operation to deliver the results of the printing operation. This might include sending the output to a printer, a file or a previewing program. Returns YES if the output was delivered sucessfully. */ - (BOOL)deliverResult { return NO; } /** Call this message to run the print operation on a view. This includes (optionally) displaying a print panel and working with the NSView to paginate and draw the contents of the view. */ - (BOOL)runOperation { BOOL result; if (_showPanels) { NSPrintPanel *panel = [self printPanel]; int button; [panel setAccessoryView: _accessoryView]; [self _setupPrintInfo]; [panel updateFromPrintInfo]; button = [panel runModal]; [panel setAccessoryView: nil]; if (button != NSOKButton) { [self cleanUpOperation]; return NO; } [panel finalWritePrintInfo]; } result = NO; if ([self _runOperation]) result = [self deliverResult]; [self cleanUpOperation]; return result; } /** Run a print operation modally with respect to a window. */ - (void)runOperationModalForWindow: (NSWindow *)docWindow delegate: (id)delegate didRunSelector: (SEL)didRunSelector contextInfo:(void *)contextInfo { NSMutableDictionary *dict; NSPrintPanel *panel = [self printPanel]; /* Save the selector so we can use it later */ dict = [_printInfo dictionary]; [dict setObject: [NSValue value: &didRunSelector withObjCType: @encode(SEL)] forKey: @"GSModalRunSelector"]; [dict setObject: delegate forKey: @"GSModalRunDelegate"]; /* Assume we want to show the panel regardless of the value of _showPanels */ [panel setAccessoryView: _accessoryView]; [self _setupPrintInfo]; [panel updateFromPrintInfo]; [panel beginSheetWithPrintInfo: _printInfo modalForWindow: docWindow delegate: delegate didEndSelector: @selector(_printOperationDidRun:sucess:contextInfo:) contextInfo: contextInfo]; [panel setAccessoryView: nil]; } // // Getting the NSPrintInfo Object // /** Returns the NSPrintInfo object associated with the receiver. */ - (NSPrintInfo *)printInfo { return _printInfo; } /** Set the NSPrintInfo object associated with the receiver. */ - (void)setPrintInfo:(NSPrintInfo *)aPrintInfo { if (aPrintInfo == nil) aPrintInfo = [NSPrintInfo sharedPrintInfo]; ASSIGNCOPY(_printInfo, aPrintInfo); } // // Getting the NSView Object // /** Return the view that is the being printed. */ - (NSView *)view { return _view; } @end @implementation NSPrintOperation (Private) - (id) initWithView:(NSView *)aView insideRect:(NSRect)rect toData:(NSMutableData *)data printInfo:(NSPrintInfo *)aPrintInfo { if ([NSPrintOperation currentOperation] != nil) { [NSException raise: NSPrintOperationExistsException format: @"There is already a printoperation for this thread"]; } ASSIGN(_view, aView); _rect = rect; ASSIGN(_data, data); _pageOrder = NSUnknownPageOrder; _showPanels = NO; [self setPrintInfo: aPrintInfo]; _path = nil; _currentPage = 0; [NSPrintOperation setCurrentOperation: self]; return self; } @end @implementation NSPrintOperation (TrulyPrivate) /* Private method to run the printing operation. Needs to create an autoreleaes pool to make sure the print context is destroyed before returning (which closes the print file.) */ - (BOOL) _runOperation { BOOL result; CREATE_AUTORELEASE_POOL(pool); NSGraphicsContext *oldContext = [NSGraphicsContext currentContext]; [self createContext]; if (_context == nil) return NO; result = NO; if (_pageOrder == NSUnknownPageOrder) { if ([[[_printInfo dictionary] objectForKey: NSPrintReversePageOrder] boolValue] == YES) _pageOrder = NSDescendingPageOrder; else _pageOrder = NSAscendingPageOrder; } [NSGraphicsContext setCurrentContext: _context]; NS_DURING { [self _print]; result = YES; [NSGraphicsContext setCurrentContext: oldContext]; } NS_HANDLER { [_view _cleanupPrinting]; [NSGraphicsContext setCurrentContext: oldContext]; NSRunAlertPanel(@"Error", @"Printing error: %@", @"OK", NULL, NULL, localException); } NS_ENDHANDLER [self destroyContext]; RELEASE(pool); return result; } - (void) _setupPrintInfo { BOOL knowsPageRange; NSRange viewPageRange; NSMutableDictionary *dict = [_printInfo dictionary]; knowsPageRange = [_view knowsPageRange: &viewPageRange]; if (knowsPageRange == YES) { int first = viewPageRange.location; int last = NSMaxRange(viewPageRange) - 1; [dict setObject: NSNUMBER(first) forKey: NSPrintFirstPage]; [dict setObject: NSNUMBER(last) forKey: NSPrintLastPage]; } } - (void)_printOperationDidRun:(NSPrintOperation *)printOperation success:(BOOL)success contextInfo:(void *)contextInfo { id delegate; SEL *didRunSelector; NSMutableDictionary *dict; void (*didRun)(id, SEL, BOOL, id); if (success == YES) { NSPrintPanel *panel = [self printPanel]; [panel finalWritePrintInfo]; success = NO; if ([self _runOperation]) success = [self deliverResult]; } [self cleanUpOperation]; dict = [_printInfo dictionary]; didRunSelector = [[dict objectForKey: @"GSModalRunSelector"] pointerValue]; delegate = [dict objectForKey: @"GSModalRunDelegate"]; didRun = (void (*)(id, SEL, BOOL, id))[delegate methodForSelector: *didRunSelector]; didRun (delegate, *didRunSelector, success, contextInfo); } static NSSize scaleSize(NSSize size, double scale) { size.height *= scale; size.width *= scale; return size; } static NSRect scaleRect(NSRect rect, double scale) { return NSMakeRect(NSMinX(rect) * scale, NSMinY(rect) * scale, NSWidth(rect) * scale, NSHeight(rect) * scale); } /* Pagination - guess how many pages we need to print. This could be off by one in both X and Y because of the view's ability to adjust the width and height of the printRect during printing. Also set up a bunch of other information needed for printing. */ - (void) _printPaginateWithInfo: (page_info_t *)info knowsRange: (BOOL)knowsRange { NSMutableDictionary *dict; dict = [_printInfo dictionary]; info->paperSize = [_printInfo paperSize]; info->orient = [_printInfo orientation]; info->printScale = [[dict objectForKey: NSPrintScalingFactor] doubleValue]; info->nup = [[dict objectForKey: NSPrintPagesPerSheet] intValue]; info->nupScale = 1; if (info->nup < 1 || (info->nup > 1 && (((info->nup) & 0x1) == 1))) { /* Bad nup value */ info->nup = 1; [dict setObject: NSNUMBER(1) forKey: NSPrintPagesPerSheet]; } /* Subtract the margins from the paper size to get print boundary */ info->paperBounds.size = info->paperSize; info->paperBounds.origin.x = [_printInfo leftMargin]; info->paperBounds.origin.y = [_printInfo bottomMargin]; info->paperBounds.size.width -= ([_printInfo rightMargin]+[_printInfo leftMargin]); info->paperBounds.size.height -= ([_printInfo topMargin]+[_printInfo bottomMargin]); info->sheetBounds = info->paperBounds; if (info->orient == NSLandscapeOrientation) { /* Bounding box needs to be in default user space, but the bbox we get is rotated */ info->sheetBounds = NSMakeRect(NSMinY(info->paperBounds), NSMinX(info->paperBounds), NSHeight(info->paperBounds), NSWidth(info->paperBounds)); } /* Save this for the view to look at */ [dict setObject: [NSValue valueWithRect: info->paperBounds] forKey: @"NSPrintPaperBounds"]; [dict setObject: [NSValue valueWithRect: info->sheetBounds] forKey: @"NSPrintSheetBounds"]; /* Scale bounds by the user specified scaling */ info->scaledBounds = scaleRect(_rect, info->printScale); if (knowsRange == NO) { /* Now calculate page fitting to get page scale */ info->pageScale = 1; if ([_printInfo horizontalPagination] == NSFitPagination) info->pageScale = info->paperBounds.size.width / NSWidth(info->scaledBounds); if ([_printInfo verticalPagination] == NSFitPagination) info->pageScale = MIN(info->pageScale, NSHeight(info->paperBounds)/NSHeight(info->scaledBounds)); /* Scale bounds by pageScale */ info->scaledBounds = scaleRect(info->scaledBounds, info->pageScale); /* Now find out how many pages */ info->xpages = ceil(NSWidth(info->scaledBounds)/NSWidth(info->paperBounds)); info->ypages = ceil(NSHeight(info->scaledBounds)/NSHeight(info->paperBounds)); if ([_printInfo horizontalPagination] == NSClipPagination) info->xpages = 1; if ([_printInfo verticalPagination] == NSClipPagination) info->ypages = 1; } /* Calculate nup. If nup is an odd multiple of two, secretly change the page orientation to it's complement to make pages fit better. */ if (((int)(info->nup / 2) & 0x1) == 1) { float tmp; if (info->orient == NSLandscapeOrientation) info->nupScale = info->paperSize.width/(2*info->paperSize.height); else info->nupScale = info->paperSize.height/(2*info->paperSize.width); info->nupScale /= (info->nup / 2); info->orient = (info->orient == NSPortraitOrientation) ? NSLandscapeOrientation : NSPortraitOrientation; tmp = info->paperSize.width; info->paperSize.width = info->paperSize.height; info->paperSize.height = tmp; [dict setObject: NSNUMBER(info->orient) forKey: NSPrintOrientation]; } else if (info->nup > 1) { info->nupScale = 2.0 / (float)info->nup; } if ([[dict objectForKey: NSPrintPageDirection] isEqual: @"Columns"]) info->pageDirection = 1; else info->pageDirection = 0; } /* Our personnel method to calculate the print rect for the specified page. Note, we assume this function is called in order from our first to last page. The returned pageRect is in the view's coordinate system */ - (NSRect) _rectForPage: (int)page info: (page_info_t *)info xpage: (int *)xptr ypage: (int *)yptr { int xpage, ypage; NSRect pageRect; if (info->pageDirection == 1) { xpage = (page - 1) / info->ypages; ypage = (page - 1) % info->ypages; } else { xpage = (page - 1) % info->xpages; ypage = (page - 1) / info->xpages; } *xptr = xpage; *yptr = ypage; if (xpage == 0) info->lastWidth = 0; if (ypage == 0) info->lastHeight = 0; pageRect = NSMakeRect(info->lastWidth, info->lastHeight, NSWidth(info->paperBounds), NSHeight(info->paperBounds)); pageRect = NSIntersectionRect(pageRect, info->scaledBounds); /* Scale to view's coordinate system */ return scaleRect(pageRect, 1/(info->pageScale*info->printScale)); } /* Let the view adjust the page rect we calculated. See assumptions for _rectForPage: */ - (NSRect) _adjustPagesFirst: (int)first last: (int)last info: (page_info_t *)info { int i, xpage, ypage; double hlimit, wlimit; NSRect pageRect = NSZeroRect; /* Silence compiler warning. */ hlimit = [_view heightAdjustLimit]; wlimit = [_view widthAdjustLimit]; for (i = first; i <= last; i++) { float newVal, limitVal; pageRect = [self _rectForPage: i info: info xpage: &xpage ypage: &ypage]; limitVal = NSMaxY(pageRect) - hlimit * NSHeight(pageRect); [_view adjustPageHeightNew: &newVal top: NSMinY(pageRect) bottom: NSMaxY(pageRect) limit: limitVal]; if (newVal < NSMaxY(pageRect)) pageRect.size.height = MAX(newVal, limitVal) - NSMinY(pageRect); limitVal = NSMaxX(pageRect) - wlimit * NSWidth(pageRect); [_view adjustPageWidthNew: &newVal left: NSMinX(pageRect) right: NSMaxX(pageRect) limit: limitVal]; if (newVal < NSMaxX(pageRect)) pageRect.size.width = MAX(newVal, limitVal) - NSMinX(pageRect); if (info->pageDirection == 0 || ypage == info->ypages - 1) info->lastWidth = NSMaxX(pageRect)*(info->pageScale*info->printScale); if (info->pageDirection == 1 || xpage == info->xpages - 1) info->lastHeight = NSMaxY(pageRect)*(info->pageScale*info->printScale); } return pageRect; } - (void) _print { int i, dir; BOOL knowsPageRange, allPages; NSRange viewPageRange; NSMutableDictionary *dict; page_info_t info; dict = [_printInfo dictionary]; /* Setup pagination */ allPages = [[dict objectForKey: NSPrintAllPages] boolValue]; knowsPageRange = [_view knowsPageRange: &viewPageRange]; [self _printPaginateWithInfo: &info knowsRange: knowsPageRange]; if (knowsPageRange == NO) { viewPageRange = NSMakeRange(1, (info.xpages * info.ypages)); } [dict setObject: NSNUMBER(NSMaxRange(viewPageRange) ) forKey: @"NSPrintTotalPages"]; if (allPages == YES) { info.first = viewPageRange.location; info.last = NSMaxRange(viewPageRange) - 1; } else { info.first = [[dict objectForKey: NSPrintFirstPage] intValue]; info.last = [[dict objectForKey: NSPrintLastPage] intValue]; info.first = MAX(info.first, (int)viewPageRange.location); info.first = MIN(info.first, (int)(NSMaxRange(viewPageRange) - 1)); info.last = MAX(info.last, info.first); info.last = MIN(info.last, (int)(NSMaxRange(viewPageRange) - 1)); viewPageRange = NSMakeRange(info.first, (info.last-info.first)+1); } info.lastWidth = info.lastHeight = 0; [dict setObject: NSFNUMBER(info.nupScale) forKey: @"NSNupScale"]; [dict setObject: NSNUMBER(info.first) forKey: NSPrintFirstPage]; if (allPages == YES && knowsPageRange == NO) [dict setObject: NSNUMBER(info.first-1) forKey: NSPrintLastPage]; else [dict setObject: NSNUMBER(info.last) forKey: NSPrintLastPage]; NSDebugLLog(@"NSPrinting", @"Printing pages %d to %d", info.first, info.last); NSDebugLLog(@"NSPrinting", @"Printing rect %@, scaled %@", NSStringFromRect(_rect), NSStringFromRect(info.scaledBounds)); _currentPage = info.first; dir = 1; if (_pageOrder == NSDescendingPageOrder) { _currentPage = info.last; dir = -1; } if (dir > 0 && _currentPage != 1) { /* Calculate page rects we aren't processing to catch up to the first page we are */ NSRect pageRect; pageRect = [self _adjustPagesFirst: 1 last: _currentPage-1 info: &info]; } /* Print the header information */ [_view beginDocument]; /* Print each page */ i = 0; while (i < (info.last-info.first+1)) { NSPoint location; NSRect pageRect, scaledPageRect; if (knowsPageRange == YES) { pageRect = [_view rectForPage: _currentPage]; } else { if (dir < 0) pageRect = [self _adjustPagesFirst: 1 last: _currentPage info: &info]; else pageRect = [self _adjustPagesFirst: _currentPage last: _currentPage info: &info]; } NSDebugLLog(@"NSPrinting", @" current page %d, rect %@", _currentPage, NSStringFromRect(pageRect)); if (NSIsEmptyRect(pageRect)) break; scaledPageRect = scaleRect(pageRect, info.printScale*info.pageScale); location = [_view locationOfPrintRect: scaledPageRect]; /* Draw using our special view routine */ [_view _displayPageInRect: pageRect atPlacement: location withInfo: info]; if (dir > 0 && _currentPage == info.last && allPages == YES) { /* Check if adjust pages forced part of the bounds onto another page */ if (NSMaxX(pageRect) < NSMaxX(_rect) && [_printInfo horizontalPagination] != NSClipPagination) { info.xpages++; } if (NSMaxY(pageRect) < NSMaxY(_rect) && [_printInfo verticalPagination] != NSClipPagination) { info.ypages++; } viewPageRange = NSMakeRange(1, (info.xpages * info.ypages)); info.last = NSMaxRange(viewPageRange) - 1; } i++; _currentPage += dir; } /* Print each page */ /* Make sure we end the sheet */ if ( info.nup > 1 && (info.last - info.first) % info.nup != info.nup - 1 ) { [_view drawSheetBorderWithSize: info.paperBounds.size]; [_view _endSheet]; } [_view endDocument]; /* Setup/reset for next time */ [dict setObject: NSNUMBER(info.last) forKey: NSPrintLastPage]; if (((int)(info.nup / 2) & 0x1) == 1) { info.orient = (info.orient == NSPortraitOrientation) ? NSLandscapeOrientation : NSPortraitOrientation; [dict setObject: NSNUMBER(info.orient) forKey: NSPrintOrientation]; } } @end @implementation NSView (NSPrintOperation) - (void) _displayPageInRect: (NSRect)pageRect atPlacement: (NSPoint)location withInfo: (page_info_t)info { int currentPage; float xoffset, yoffset, scale; NSString *label; NSGraphicsContext *ctxt = GSCurrentContext(); NSPrintOperation *printOp = [NSPrintOperation currentOperation]; currentPage = [printOp currentPage]; label = nil; if (info.nup == 1) label = [NSString stringWithFormat: @"%d", currentPage]; /* Begin a sheet (i.e. a physical page in Postscript terms). If nup > 1 then this occurs only once every nup pages */ if ((currentPage - info.first) % info.nup == 0) { [self beginPage: floor((currentPage - info.first)/info.nup)+1 label: label bBox: info.sheetBounds fonts: nil]; if (info.orient == NSLandscapeOrientation) { DPSrotate(ctxt, 90); DPStranslate(ctxt, 0, -info.paperSize.height); } /* Also offset by margins */ DPStranslate(ctxt, NSMinX(info.paperBounds), NSMinY(info.paperBounds)); } /* Begin a logical page */ [self beginPageInRect: pageRect atPlacement: location]; scale = info.pageScale * info.printScale; if (scale != 1.0) DPSscale(ctxt, scale, scale); if ([self isFlipped]) { NSAffineTransformStruct ats = { 1, 0, 0, -1, 0, NSHeight(_bounds) }; NSAffineTransform *matrix, *flip; flip = [NSAffineTransform new]; matrix = [NSAffineTransform new]; [matrix makeIdentityMatrix]; [matrix prependTransform: _boundsMatrix]; /* * The flipping process must result in a coordinate system that * exactly overlays the original. To do that, we must translate * the origin by the height of the view. */ [flip setTransformStruct: ats]; [matrix prependTransform: flip]; [matrix concat]; yoffset = NSHeight(_frame) - NSMaxY(pageRect); } else yoffset = 0 - NSMinY(pageRect); /* Translate so the rect we're printing is on the page */ xoffset = 0 - NSMinX(pageRect); DPStranslate(ctxt, xoffset, yoffset); if ((currentPage - info.first) % info.nup == 0) [self endPageSetup]; /* Do the actual drawing */ [self displayRectIgnoringOpacity: pageRect]; /* End a logical page */ DPSgrestore(ctxt); // Balance gsave in beginPageInRect: [self drawPageBorderWithSize: scaleSize(info.paperBounds.size, info.nupScale)]; [self endPage]; /* End a physical page */ if ( ((currentPage - info.first) % info.nup == info.nup-1) ) { [self drawSheetBorderWithSize: info.paperBounds.size]; [self _endSheet]; } } - (void) _endSheet { NSGraphicsContext *ctxt = GSCurrentContext(); NSPrintOperation *printOp = [NSPrintOperation currentOperation]; if ([printOp isEPSOperation] == NO) DPSPrintf(ctxt, "showpage\n"); DPSPrintf(ctxt, "%%%%PageTrailer\n"); DPSPrintf(ctxt, "\n"); } @end