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libs-gui/Source/NSPrintOperation.m
Eric Wasylishen 4eac748b62 * Source/NSPrintOperation.m (_print): Fix read of uninitialized 
variable, which was breaking printing of wrap-to-page mode in
TextEdit. TODO: Run the printing code through valgrind, there is
a lot of suspicious code.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@34373 72102866-910b-0410-8b05-ffd578937521
2011-12-31 22:37:55 +00:00

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/*
NSPrintOperation.m
Controls operations generating print jobs.
Copyright (C) 1996,2004 Free Software Foundation, Inc.
Author: Scott Christley <scottc@net-community.com>
Date: 1996
Author: Fred Kiefer <FredKiefer@gmx.de>
Date: November 2000
Started implementation.
Modified for Printing Backend Support
Author: Chad Hardin <cehardin@mac.com>
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 Lesser 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; see the file COPYING.LIB.
If not, see <http://www.gnu.org/licenses/> or write to the
Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <limits.h>
#include <math.h>
#include "config.h"
#import <Foundation/NSString.h>
#import <Foundation/NSDebug.h>
#import <Foundation/NSData.h>
#import <Foundation/NSFileManager.h>
#import <Foundation/NSException.h>
#import <Foundation/NSPathUtilities.h>
#import <Foundation/NSTask.h>
#import <Foundation/NSThread.h>
#import <Foundation/NSUserDefaults.h>
#import <Foundation/NSValue.h>
#import "AppKit/AppKitExceptions.h"
#import "AppKit/NSAffineTransform.h"
#import "AppKit/NSApplication.h"
#import "AppKit/NSGraphicsContext.h"
#import "AppKit/NSView.h"
#import "AppKit/NSPrinter.h"
#import "AppKit/NSPrintPanel.h"
#import "AppKit/NSPrintInfo.h"
#import "AppKit/NSPrintOperation.h"
#import "AppKit/NSWorkspace.h"
#import "AppKit/PSOperators.h"
#import "GNUstepGUI/GSEPSPrintOperation.h"
#import "GNUstepGUI/GSPDFPrintOperation.h"
#import "GNUstepGUI/GSPrintOperation.h"
#import "GSGuiPrivate.h"
#define NSNUMBER(a) [NSNumber numberWithInt: (a)]
#define NSFNUMBER(a) [NSNumber numberWithDouble: (a)]
/*
* When a view gets printed it may need to be split up into segments, if the
* views printed rectangle (after scaling) is bigger than the used area on the page.
* In this case we set xpages and ypages to the number of segments needed per
* dimension. This pre-calculated value may not be accurate, as the view may
* adjust the rect for each printed page.
* An independent concept is that multuple pages may be put on one sheet of paper.
* This is taken care of by nup and nupScale. Here we currently only allow even
* values (or 1, when we don't use multiple pages). If we ever change this be
* sure to change [NSView beginPageInRect:atPlacement:], perhaps by moving that
* code to here?
* We always end up printing two rows per page, this is fine for 2, 4, 6, 8 and 10,
* but starting from there it would be better to use three or four rows.
*/
/* 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 area of a sheet in default user space */
NSSize paperSize; /* Size of the paper */
int xpages, ypages; /* number of page segments for the view in both dimensions */
int first, last; /* first and last page to print */
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 of pages to print on a sheet */
double lastWidth, lastHeight; /* max. values of last printed page (scaled) */
NSPrintingOrientation orient;
int pageDirection; /* NSPrintPageDirection */
} page_info_t;
@interface NSPrintOperation (TrulyPrivate)
- (BOOL) _runOperation;
- (void) _setupPrintInfo;
- (void)_printOperationDidRun:(NSPrintOperation *)printOperation
returnCode:(int)returnCode
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
withInfo: (page_info_t)info
knowsPageRange: (BOOL)knowsPageRange;
@end
@interface NSView (NPrintOperationPrivate)
- (void) _endSheet;
- (void) _cleanupPrinting;
@end
static NSString *NSPrintOperationThreadKey = @"NSPrintOperationThreadKey";
/**
<unit>
<heading>Class Description</heading>
<p>
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.
</p>
</unit>
*/
@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(_print_info);
RELEASE(_view);
RELEASE(_data);
TEST_RELEASE(_context);
TEST_RELEASE(_print_panel);
TEST_RELEASE(_accessory_view);
TEST_RELEASE(_path);
TEST_RELEASE(_job_style_hint);
[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 (_print_panel == nil)
ASSIGN(_print_panel, [NSPrintPanel printPanel]);
return _print_panel;
}
/** Returns YES if the reciever display an NSPrintPanel and other information
when running a print operation. */
- (BOOL)showPanels
{
return [self showsPrintPanel] && [self showsProgressPanel];
}
/** Sets the NSPrintPanel used by the receiver obtaining and displaying
printing information from/to the user.
*/
- (void)setPrintPanel:(NSPrintPanel *)panel
{
ASSIGN(_print_panel, 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
{
[self setShowsPrintPanel: flag];
[self setShowsProgressPanel: flag];
}
- (BOOL)showsPrintPanel
{
return _flags.show_print_panel;
}
- (void)setShowsPrintPanel:(BOOL)flag
{
_flags.show_print_panel = flag;
}
- (BOOL)showsProgressPanel
{
return _flags.show_progress_panel;
}
- (void)setShowsProgressPanel:(BOOL)flag
{
_flags.show_progress_panel = flag;
}
/** Returns the accessory view used by the NSPrintPanel associated with
the receiver.
*/
- (NSView *)accessoryView
{
return _accessory_view;
}
/** Set the accessory view used by the NSPrintPanel associated with the
receiver.
*/
- (void)setAccessoryView:(NSView *)aView
{
ASSIGN(_accessory_view, 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 _page_order;
}
/** Set the page order used when printing.
*/
- (void)setPageOrder:(NSPrintingPageOrder)order
{
_page_order = 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 ([self showsPrintPanel])
{
NSPrintPanel *panel = [self printPanel];
int button;
[panel setAccessoryView: _accessory_view];
[self _setupPrintInfo];
button = [panel runModalWithPrintInfo: _print_info];
[panel setAccessoryView: nil];
if (button != NSOKButton)
{
[self cleanUpOperation];
return NO;
}
}
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];
if (delegate != nil && didRunSelector != NULL)
{
/* Save the selector so we can use it later */
dict = [_print_info 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: _accessory_view];
[self _setupPrintInfo];
[panel beginSheetWithPrintInfo: _print_info
modalForWindow: docWindow
delegate: self
didEndSelector:
@selector(_printOperationDidRun:returnCode:contextInfo:)
contextInfo: contextInfo];
[panel setAccessoryView: nil];
}
- (BOOL)canSpawnSeparateThread
{
return _flags.can_spawn_separate_thread;
}
- (void)setCanSpawnSeparateThread:(BOOL)flag
{
_flags.can_spawn_separate_thread = flag;
}
- (NSString *) jobStyleHint
{
return _job_style_hint;
}
- (void)setJobStyleHint:(NSString *)hint
{
ASSIGN(_job_style_hint, hint);
}
//
// Getting the NSPrintInfo Object
//
/** Returns the NSPrintInfo object associated with the receiver.
*/
- (NSPrintInfo *)printInfo
{
return _print_info;
}
/** Set the NSPrintInfo object associated with the receiver.
*/
- (void)setPrintInfo:(NSPrintInfo *)aPrintInfo
{
if (aPrintInfo == nil)
aPrintInfo = [NSPrintInfo sharedPrintInfo];
ASSIGNCOPY(_print_info, 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);
_page_order = NSUnknownPageOrder;
[self setShowsPrintPanel: NO];
[self setShowsProgressPanel: 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 (_page_order == NSUnknownPageOrder)
{
if ([[[_print_info dictionary] objectForKey: NSPrintReversePageOrder]
boolValue] == YES)
_page_order = NSDescendingPageOrder;
else
_page_order = 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 = NSMakeRange(1, 0);
NSMutableDictionary *dict = [_print_info 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
returnCode:(int)returnCode
contextInfo:(void *)contextInfo
{
id delegate;
SEL didRunSelector;
BOOL success = NO;
NSMutableDictionary *dict;
void (*didRun)(id, SEL, BOOL, id);
if (returnCode == NSOKButton)
{
if ([self _runOperation])
success = [self deliverResult];
}
[self cleanUpOperation];
dict = [_print_info dictionary];
[[dict objectForKey: @"GSModalRunSelector"] getValue: &didRunSelector];
delegate = [dict objectForKey: @"GSModalRunDelegate"];
if (delegate != nil && didRunSelector != NULL)
{
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
* 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;
NSNumber *value;
dict = [_print_info dictionary];
info->paperSize = [_print_info paperSize];
info->orient = [_print_info orientation];
value = [dict objectForKey: NSPrintScalingFactor];
if (value != nil)
info->printScale = [value doubleValue];
else
info->printScale = 1.0;
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 = [_print_info leftMargin];
info->paperBounds.origin.y = [_print_info bottomMargin];
info->paperBounds.size.width -=
([_print_info rightMargin]+[_print_info leftMargin]);
info->paperBounds.size.height -=
([_print_info topMargin]+[_print_info bottomMargin]);
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));
}
else
{
info->sheetBounds = 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);
info->pageScale = 1; // default
if (knowsRange == NO)
{
/* Now calculate page fitting to get page scale */
if ([_print_info horizontalPagination] == NSFitPagination)
info->pageScale = info->paperBounds.size.width
/ NSWidth(info->scaledBounds);
if ([_print_info 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 ([_print_info horizontalPagination] == NSClipPagination)
info->xpages = 1;
if ([_print_info 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)
{
CGFloat 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 / (CGFloat)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++)
{
CGFloat 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 = NSMakeRange(1, 0);
NSMutableDictionary *dict;
NSNumber *value;
page_info_t info;
dict = [_print_info dictionary];
/* Setup pagination */
knowsPageRange = [_view knowsPageRange: &viewPageRange];
[self _printPaginateWithInfo: &info knowsRange: knowsPageRange];
if (knowsPageRange == NO)
{
viewPageRange = NSMakeRange(1, (info.xpages * info.ypages));
}
else
{
// These values never get used
info.xpages = 1;
info.ypages = viewPageRange.length;
}
[dict setObject: NSNUMBER(NSMaxRange(viewPageRange))
forKey: @"NSPrintTotalPages"];
value = [dict objectForKey: NSPrintAllPages];
if (value != nil)
allPages = [value boolValue];
else
allPages = YES;
if (allPages == YES)
{
info.first = viewPageRange.location;
info.last = NSMaxRange(viewPageRange) - 1;
}
else
{
value = [dict objectForKey: NSPrintFirstPage];
if (value != nil)
info.first = [value intValue];
else
info.first = 1;
value = [dict objectForKey: NSPrintLastPage];
if (value != nil)
info.last = [value intValue];
else
info.last = INT_MAX;
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);
}
[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));
if (_page_order == NSDescendingPageOrder)
{
_currentPage = info.last;
dir = -1;
}
else
{
_currentPage = info.first;
dir = 1;
}
/*
* FIXME: Independent of the page order we could pre-calculate the
* pageRects for all pages up to last (including clipping adjustment)
* and use them when printing.
*/
info.lastWidth = info.lastHeight = 0;
if (!knowsPageRange && dir > 0 && _currentPage != 1)
{
/* Calculate page rects we aren't processing to catch up to the
first page we are */
[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))
{
NSRect pageRect;
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;
/* Draw using our special view routine */
[_view _displayPageInRect: pageRect
withInfo: info
knowsPageRange: knowsPageRange];
// We could end up in this case for each row/column not just the lase page.
if (!knowsPageRange && dir > 0 && _currentPage == info.last && allPages == YES)
{
/* Check if adjust pages forced part of the bounds onto
another page */
if (NSMaxX(pageRect) < NSMaxX(_rect)
&& [_print_info horizontalPagination] != NSClipPagination)
{
info.xpages++;
}
if (NSMaxY(pageRect) < NSMaxY(_rect)
&& [_print_info 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.sheetBounds.size];
[_view _endSheet];
DPSgrestore([self context]);
}
[_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
withInfo: (page_info_t)info
knowsPageRange: (BOOL)knowsPageRange
{
int currentPage;
int numberOnSheet;
CGFloat xoffset, yoffset, scale;
NSPoint location;
NSPrintOperation *printOp = [NSPrintOperation currentOperation];
NSGraphicsContext *ctxt = [printOp context];
currentPage = [printOp currentPage];
numberOnSheet = (currentPage - info.first) % info.nup;
/* Begin a sheet (i.e. a physical page in Postscript terms). If
nup > 1 then this occurs only once every nup pages */
if (numberOnSheet == 0)
{
NSString *label;
NSRect boundsForPage = info.sheetBounds;
if (knowsPageRange)
{
boundsForPage = pageRect;
}
label = nil;
if (info.nup == 1)
label = [NSString stringWithFormat: @"%d", currentPage];
DPSgsave(ctxt);
[self beginPage: floor((currentPage - info.first)/info.nup)+1
label: label
bBox: boundsForPage
fonts: nil];
if (info.orient == NSLandscapeOrientation)
{
DPSrotate(ctxt, 90);
DPStranslate(ctxt, 0, -info.paperSize.height);
}
if (!knowsPageRange)
{
/* Also offset by margins */
DPStranslate(ctxt, NSMinX(info.paperBounds), NSMinY(info.paperBounds));
}
/* End page setup for multi page */
if (info.nup != 1)
{
[self addToPageSetup];
[self endPageSetup];
}
}
scale = info.pageScale * info.printScale;
location = [self locationOfPrintRect: scaleRect(pageRect, scale)];
/* Begin a logical page */
[self beginPageInRect: pageRect atPlacement: location];
if (scale != 1.0)
DPSscale(ctxt, scale, scale);
/* FIXME: Why is this needed? Shouldn't the flip be handled by the lockFocus method? */
if ([self isFlipped])
{
NSAffineTransformStruct ats = { 1, 0, 0, -1, 0, NSHeight(_bounds) };
NSAffineTransform *matrix, *flip;
flip = [NSAffineTransform new];
matrix = [NSAffineTransform new];
if (_boundsMatrix != nil)
{
[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];
RELEASE(flip);
RELEASE(matrix);
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);
/* End page setup for single page */
if (info.nup == 1)
{
[self addToPageSetup];
[self endPageSetup];
}
/* Do the actual drawing */
[self displayRectIgnoringOpacity: pageRect inContext: ctxt];
/* End a logical page */
// FIXME: Attempt to get the coordinates of the page border correct.
DPSgrestore(ctxt);
DPSgsave(ctxt);
[self drawPageBorderWithSize: info.paperBounds.size];
[self endPage];
/* End a physical page */
if (numberOnSheet == info.nup - 1)
{
[self drawSheetBorderWithSize: info.sheetBounds.size];
[self _endSheet];
DPSgrestore(ctxt);
}
}
@end
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