/*

File: CalendarPage.m

Abstract: <Description, Points of interest, Algorithm approach>

Version: <1.0>

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*/ 

// =====================================================================================================================

//  CalendarPage.m

// =====================================================================================================================

#import "CalendarPage.h"

static void fitRectInRect (NSRect *srcRect, NSRect destRect);

@implementation CalendarPage

// ======================================================================================================== CalendarPage

// ------------------------------------------------------------------------------------------------- initWithImage:month

- (id) initWithImage: (NSImage *) image month: (int) month

{

    // Call PDFPage to init.

    [super init];

    // Retain, assign image.

    _image = [image retain];

    // Assign month.

    _month = month;

    return self;

}

// --------------------------------------------------------------------------------------------------------------- label

- (NSString *) label

{

    switch (_month)

    {

        case 1:

        return @"January";

        break;

        case 2:

        return @"February";

        break;

        case 3:

        return @"March";

        break;

        case 4:

        return @"April";

        break;

        case 5:

        return @"May";

        break;

        case 6:

        return @"June";

        break;

        case 7:

        return @"July";

        break;

        case 8:

        return @"August";

        break;

        case 9:

        return @"September";

        break;

        case 10:

        return @"October";

        break;

        case 11:

        return @"November";

        break;

        default:

        return @"December";

        break;

    }

}

// -------------------------------------------------------------------------------------------------------- boundsForBox

- (NSRect) boundsForBox: (PDFDisplayBox) box

{

    // Always return 8.5 x 11 inches (in points of course).

    return NSMakeRect(0.0, 0.0, 612.0, 792.0);

}

// --------------------------------------------------------------------------------------------------------- drawWithBox

- (void) drawWithBox: (PDFDisplayBox) box

{

    NSRect      sourceRect;

    NSRect      topHalf;

    NSRect      destRect;

    int         row, col;

    // Drag image.

    // ...........

    // Source rectangle.

    sourceRect.origin = NSMakePoint(0.0, 0.0);

    sourceRect.size = [_image size];

    // Represent the top half of the page.

    topHalf = [self boundsForBox: box];

    topHalf.origin.y += topHalf.size.height / 2.0;

    topHalf.size.height = (topHalf.size.height / 2.0) - 36.0;

    // Scale and center image within top half of page.

    destRect = sourceRect;

    fitRectInRect(&destRect, topHalf);

    // Draw.

    [_image drawInRect: destRect fromRect: sourceRect operation: NSCompositeCopy fraction: 1.0];

    // Draw month name.

    // ...........

    destRect = [self boundsForBox: box];

    destRect.origin.y += destRect.size.height / 2.0;

    destRect.size.height = 48.0;

    destRect.origin.y -= 48.0;

    destRect.size.width -= 36.0;

    destRect.origin.x += 36.0;

    // Draw label.

    [[self label] drawInRect: destRect withAttributes: [NSDictionary dictionaryWithObjectsAndKeys: 

            [NSFont boldSystemFontOfSize: 36.0], NSFontAttributeName, NULL]];

    // Draw calendar grid.

    // ...........

    destRect = [self boundsForBox: box];

    destRect.size.height = (destRect.size.height / 2.0) - 48.0 - 36.0;

    destRect.size.width -= (36.0 * 2.0);

    destRect.origin.x += 36.0;

    destRect.origin.y += 36.0;

    // Set grid color.

    [[NSColor grayColor] set];

    // Frame.

    NSFrameRect(destRect);

    for (col = 1; col < 7; col++)

    {

        NSRect  line;

        line = NSMakeRect(destRect.origin.x + (col * destRect.size.width / 7.0), destRect.origin.y, 

                1.0, destRect.size.height);

        NSFrameRect(line);

    }

    for (row = 1; row < 5; row++)

    {

        NSRect  line;

        line = NSMakeRect(destRect.origin.x, destRect.origin.y + (row * destRect.size.height / 5.0), 

                destRect.size.width, 1.0);

        NSFrameRect(line);

    }

}

@end

// =========================================================================================================== Functions

// ------------------------------------------------------------------------------------------------------- fitRectInRect

static void fitRectInRect (NSRect *srcRect, NSRect destRect)

{

    NSRect      fitRect;

    // Assign.

    fitRect = *srcRect;

    // Only scale down.

    if (fitRect.size.width > destRect.size.width)

    {

        float       scaleFactor;

        // Try to scale for width first.

        scaleFactor = destRect.size.width / fitRect.size.width;

        fitRect.size.width *= scaleFactor;

        fitRect.size.height *= scaleFactor;

        // Did it pass the bounding test?

        if (fitRect.size.height > destRect.size.height)

        {

            // Failed above test -- try to scale the height instead.

            fitRect = *srcRect;

            scaleFactor = destRect.size.height / fitRect.size.height;

            fitRect.size.width *= scaleFactor;

            fitRect.size.height *= scaleFactor;

        }

    }

    else if (fitRect.size.height > destRect.size.height)

    {

        float       scaleFactor;

        // Scale based on height requirements.

        scaleFactor = destRect.size.height / fitRect.size.height;

        fitRect.size.height *= scaleFactor;

        fitRect.size.width *= scaleFactor;

    }

    // Center.

    fitRect.origin.x = destRect.origin.x + ((destRect.size.width - fitRect.size.width) / 2.0);

    fitRect.origin.y = destRect.origin.y + ((destRect.size.height - fitRect.size.height) / 2.0);

    // Assign back.

    *srcRect = fitRect;

}