/*

 File: SKTRenderingView.m

 Abstract: Part of the Sketch Sample Code

 Version: 1.0

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#import "SKTRenderingView.h"

#import "SKTError.h"

#import "SKTGraphic.h"

@implementation SKTRenderingView

+ (NSData *)pdfDataWithGraphics:(NSArray *)graphics {

    // Create a view that will be used just for making PDF.

    NSRect bounds = [SKTGraphic drawingBoundsOfGraphics:graphics];

    SKTRenderingView *view = [[SKTRenderingView alloc] initWithFrame:bounds graphics:graphics printJobTitle:nil];

    NSData *pdfData = [view dataWithPDFInsideRect:bounds];

    [view release];

    return pdfData;

}

+ (NSData *)tiffDataWithGraphics:(NSArray *)graphics error:(NSError **)outError {

    /* How big a of a TIFF are we going to make? Regardless of what NSImage supports, Sketch doesn't support the creation of TIFFs that are 0 by 0 pixels. (We have to demonstrate a custom saving error somewhere, and this is an easy place to do it...) */

    NSData *tiffData = nil;

    NSRect bounds = [SKTGraphic drawingBoundsOfGraphics:graphics];

    if (!NSIsEmptyRect(bounds)) {

        // Create a new image and prepare to draw in it. Get the graphics context for it after we lock focus, not before.

        NSImage *image = [[NSImage alloc] initWithSize:bounds.size];

        [image setFlipped:YES];

        [image lockFocus];

        NSGraphicsContext *currentContext = [NSGraphicsContext currentContext];

        // We're not drawing a page image here, just the rectangle that contains the graphics being drawn, so make sure they get drawn in the right place.

        NSAffineTransform *transform = [NSAffineTransform transform];

        [transform translateXBy:(0.0f - bounds.origin.x) yBy:(0.0f - bounds.origin.y)];

        [transform concat];

        // Draw the graphics back to front.

        unsigned int graphicIndex = [graphics count];

        while (graphicIndex-->0) {

            SKTGraphic *graphic = [graphics objectAtIndex:graphicIndex];

            [currentContext saveGraphicsState];

            [NSBezierPath clipRect:[graphic drawingBounds]];

            [graphic drawContentsInView:nil isBeingCreateOrEdited:NO];

            [currentContext restoreGraphicsState];

        }

        // We're done drawing.

        [image unlockFocus];

        tiffData = [image TIFFRepresentation];

        [image release];

    } else if (outError) {

        /* In Sketch there are lots of places to catch this situation earlier. For example, we could have overridden -writableTypesForSaveOperation: and made it not return NSTIFFPboardType, but then the user would have no idea why TIFF isn't showing up in the save panel's File Format popup. This way we can present a nice descriptive errror message. */

        *outError = SKTErrorWithCode(SKTWriteCouldntMakeTIFFError);

    }

    return tiffData;

}

- (id)initWithFrame:(NSRect)frame graphics:(NSArray *)graphics printJobTitle:(NSString *)printJobTitle {

    // Do the regular Cocoa thing.

    self = [super initWithFrame:frame];

    if (self) {

        _graphics = [graphics copy];

        _printJobTitle = [printJobTitle copy];

    }

    return self;

}

- (void)dealloc {

    // Do the regular Cocoa thing.

    [_printJobTitle release];

    [_graphics release];

    [super dealloc];

}

// An override of the NSView method.

- (void)drawRect:(NSRect)rect {

    // Draw the background background.

    [[NSColor whiteColor] set];

    NSRectFill(rect);

    // Draw every graphic that intersects the rectangle to be drawn. In Sketch the frontmost graphics have the lowest indexes.

    NSGraphicsContext *currentContext = [NSGraphicsContext currentContext];

    int graphicCount = [_graphics count];

    for (int index = graphicCount - 1; index>=0; index--) {

        SKTGraphic *graphic = [_graphics objectAtIndex:index];

        NSRect graphicDrawingBounds = [graphic drawingBounds];

        if (NSIntersectsRect(rect, graphicDrawingBounds)) {

            // Draw the graphic.

            [currentContext saveGraphicsState];

            [NSBezierPath clipRect:graphicDrawingBounds];

            [graphic drawContentsInView:self isBeingCreateOrEdited:NO];

            [currentContext restoreGraphicsState];

        }

    }

}

// An override of the NSView method.

- (BOOL)isFlipped {

    // Put (0, 0) at the top-left of the view.

    return YES;

}

// An override of the NSView method.

- (BOOL)isOpaque {

    // Our override of -drawRect: always draws a background.

    return YES;

}

// An override of the NSView method.

- (NSString *)printJobTitle {

    // Do the regular Cocoa thing.

    return [[_printJobTitle retain] autorelease];

}

@end