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/*
 *  R.app : a Cocoa front end to: "R A Computer Language for Statistical Data Analysis"
 *  
 *  R.app Copyright notes:
 *                     Copyright (C) 2004-5  The R Foundation
 *                     written by Stefano M. Iacus and Simon Urbanek
 *
 *                  
 *  R Copyright notes:
 *                     Copyright (C) 1995-1996   Robert Gentleman and Ross Ihaka
 *                     Copyright (C) 1998-2001   The R Development Core Team
 *                     Copyright (C) 2002-2004   The R Foundation
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  A copy of the GNU General Public License is available via WWW at
 *  http://www.gnu.org/copyleft/gpl.html.  You can also obtain it by
 *  writing to the Free Software Foundation, Inc., 59 Temple Place,
 *  Suite 330, Boston, MA  02111-1307  USA.
 */

#import "../RGUI.h"
#import "RDeviceView.h"
#import "RQuartz.h"
#import "../RController.h"

#include <R.h>
#include <R_ext/Boolean.h>
#include <R_ext/Rdynload.h>
#include <Rdefines.h>
#include <Rinternals.h>

#include <R_ext/Parse.h>

#include <Graphics.h>
#include <Rdevices.h>

extern void RQuartz_DiplayGList(RDeviceView * devView);
extern void RQuartz_SyncContext(RDeviceView * devView);

#define POOL NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]
@implementation RDeviceView

- (id)initWithFrame:(NSRect)frameRect
{
    if ((self = [super initWithFrame:frameRect]) != nil) {
        // Add initialization code here
        myContext = 0;
        inReplay = NO;
        resizeCache = nil;
        SLog(@"RDeviceView initWithFrame");
    }
    return self;
}

- (void) setPDFDrawing: (BOOL)flag
{
    PDFDrawing = flag;
}

- (BOOL) isPDFDrawing
{
    return PDFDrawing;
}

- (void) setDevNum: (int)dnum
{
    deviceNum = dnum;
}

- (int) getDevNum
{
    return deviceNum;
}

- (BOOL)isFlipped { return YES; }


- (void) dealloc
{
    [super dealloc];
}

- (BOOL) inReplay
{
    return inReplay;
}

static void drawStringInRect(NSRect rect, NSString *str, int fontSize)
{
    NSDictionary *dict = [NSDictionary
                          dictionaryWithObject: [NSFont boldSystemFontOfSize: fontSize]
                                        forKey: NSFontAttributeName];
    NSAttributedString *astr = [[NSAttributedString alloc]
                                initWithString: str
                                    attributes: dict];
    NSSize strSize = [astr size];
    NSPoint pt = NSMakePoint((rect.size.width - strSize.width) / 2,
                             (rect.size.height - strSize.height) / 2);

    // clear the rect
    rect.origin.x = 0;
    rect.origin.y = 0;
    [[NSColor whiteColor] set];
    NSRectFill(rect);

    // draw the string
    [astr drawAtPoint:pt];

    [astr release];
}

/*  FIXME: zoom, minimize don't work. With grid, it waits for event before rewriting, it
    essentialy blocks R
*/  
- (void)viewDidEndLiveResize
{
    [super viewDidEndLiveResize];
    [resizeCache release];
    resizeCache = nil;
    [self setNeedsDisplay:YES];
}

- (void)viewWillStartLiveResize
{
    [super viewWillStartLiveResize];
    NSRect b = [self bounds];
    if (resizeCache) [resizeCache release];
    resizeCache = [[self bitmapImageRepForCachingDisplayInRect:b] retain];
    if (resizeCache) [self cacheDisplayInRect:b toBitmapImageRep:resizeCache];
}

- (CGContextRef) currentContext {
    return myContext;
}

- (void)drawRect:(NSRect)aRect
{
    SLog(@"RDeviceView drawRect: %fx%f [%fx%f]", aRect.origin.x, aRect.origin.y, aRect.size.width, aRect.size.height);          

    myContext = [[NSGraphicsContext currentContext] graphicsPort];
    RQuartz_SyncContext(self);

    CGContextSelectFont(myContext,"Helvetica",10.0,kCGEncodingFontSpecific);
    //CGContextTranslateCTM(myContext, 0.0, frame.size.height);
    //CGContextScaleCTM(myContext,1.0,-1.0);
    CGContextSaveGState(myContext);
    
    if ([self inLiveResize])
    {
        if (resizeCache) {
            [self lockFocus];
            CGContextSaveGState(myContext);
            CGContextTranslateCTM(myContext, 0.0, [self bounds].size.height);
            CGContextScaleCTM(myContext,1.0,-1.0);
            [resizeCache drawInRect:[self bounds]];
            CGContextRestoreGState(myContext);
            [self unlockFocus];
        }
        return;
    }
    
    inReplay = YES;
    [self lockFocus];
    RQuartz_DiplayGList(self);
    [self unlockFocus];
    inReplay = NO;
    
    CGContextRestoreGState(myContext);
    myContext = nil;
    RQuartz_SyncContext(self);
}

- (void) saveAsBitmap: (NSString*) fname usingType: (NSBitmapImageFileType) ftype {
    [self lockFocus];
    NSBitmapImageRep* bitmap = [ [NSBitmapImageRep alloc]
            initWithFocusedViewRect: [self bounds] ];
    [self unlockFocus];
    
    NSData* data1 = [bitmap representationUsingType:ftype properties:nil];
    [[NSFileManager defaultManager] createFileAtPath:fname contents:data1 attributes:nil];
    
    [bitmap release];   
}

- (void) saveAsPDF: (NSString*) fname {
    [self setPDFDrawing:YES];
    [self lockFocus];
    NSData *data = [self dataWithPDFInsideRect:[self bounds]];
    [self unlockFocus];
    [self setPDFDrawing:NO];
    
    [data writeToFile:fname atomically:YES];
}

@end