/*

  File: MyView.m

  Abstract: MyView subclass implementation.

  Version: <1.0>

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*/   

#import "MyView.h"

#import "AppDrawing.h"

@implementation MyView

DrawingCommand _drawingCommand = kCommandStrokedAndFilledRects;

CGPDFDocumentRef _pdfDocument;

- (id)initWithFrame:(NSRect)frameRect

{

    if ((self = [super initWithFrame:frameRect]) != nil) {

        // Add initialization code here.

    }

    return self;

}

- (void)drawRect:(NSRect)rect

{

    // Obtain the Quartz context from the current NSGraphicsContext at the time the view's

    // drawRect method is called. This context is only appropriate for drawing in this invocation

    // of the drawRect method.

    CGContextRef context = (CGContextRef)[[NSGraphicsContext currentContext] graphicsPort];

    myDispatchDrawing(context, _drawingCommand);

}

- (IBAction)setDrawCommand:(id)sender

{

    DrawingCommand newCommand = [ sender tag ];

    if(_drawingCommand != newCommand){

        _drawingCommand = newCommand;

        // The view needs to be redisplayed since there is a new drawing command.

        [self setNeedsDisplay:YES];

        // Disable previous menu item.

        [currentMenuItem setState:NSOffState];

        // Update the current item.

        currentMenuItem = sender;

        // Enable new menu item.

        [currentMenuItem setState:NSOnState];

        // If we were showing a pasted document, let's get rid of it.

    }

}

- (int)currentPrintableCommand

{

    // The best representation for printing or exporting

    // when the current command caches using a bitmap context

    // or a layer is to not do any caching.

    if( _drawingCommand == kCommandDoCGLayer )

    return kCommandDoUncachedDrawing;

    return _drawingCommand;

}

- (IBAction)print:(id)sender {

    int savedDrawingCommand = _drawingCommand;

    // Set the drawing command to be one that is printable.

    _drawingCommand = [self currentPrintableCommand];

    // Do the printing operation on the view.

    [[NSPrintOperation printOperationWithView:self] runOperation];

    // Restore that before the printing operation. 

    _drawingCommand = savedDrawingCommand;

}

// Return the number of pages available for printing. For this

// application it is always 1.

- (BOOL)knowsPageRange:(NSRangePointer)range {

    range->location = 1;

    range->length = 1;

    return YES;

}

// Return the drawing rectangle for a particular page number.

// For this application it is always the page width and height.

- (NSRect)rectForPage:(int)page {

    NSPrintInfo *pi = [[NSPrintOperation currentOperation] printInfo];

    // Calculate the page height in points.

    NSSize paperSize = [pi paperSize];

    return NSMakeRect( 0, 0, paperSize.width, paperSize.height );

}

- (BOOL)validateMenuItem: (id <NSMenuItem>)menuItem

{

    if ([menuItem tag] == _drawingCommand){

        currentMenuItem = menuItem;

        [menuItem setState: YES];

    }else

        [menuItem setState: NO];

    return YES;

}

@end