#import <AppKit/AppKit.h>
#import <AppKit/DPSOperators.h>

int main(int argc, char *argv[])
{
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    NSString *fontName;
    int fontSize;
    NSFont *font;
    NSView *view;
    NSWindow *win;
    NSRect r;
    float w, *offsets;
    int i, len;

    if (argc < 2)
      {
        fontName = @"BitstreamVeraSansMono-Roman"; // @"Courier";
        fontSize = 12;
      }
    else
      {
        fontName = [NSString stringWithCString: argv[1]];
        fontSize = (argc == 3) ? atoi(argv[2]) : 12;
      }
    len = 10;
    offsets = (float *)malloc(len*2*sizeof(float));

    [NSApplication sharedApplication];

    font = [NSFont fontWithName: fontName size: fontSize];
    if (font == nil)
      {
        NSLog(@"Unable to load font.");
        exit (1);
      }
    else
      {
        NSLog(@"Loaded font '%@'.", font);
      }

    font = [font screenFont] ? [font screenFont] : font;
    w = 5;
    for (i=0; i<2*len; i++)
        offsets[i] = w;

    r = NSMakeRect(0,0,400,300);
    view = [[NSView alloc] initWithFrame: r];

    win = [[NSWindow alloc]
            initWithContentRect:r
                      styleMask: (NSResizableWindowMask |
                                  NSMiniaturizableWindowMask |
                                  NSClosableWindowMask)
                        backing: NSBackingStoreBuffered
                          defer:YES];
    [[win contentView] addSubview: view];
    [win makeKeyAndOrderFront: view];
    [win display];


    // "direct" drawing
    {
        [view lockFocus];
        NSGraphicsContext *ctxt = GSCurrentContext();

        // Test to make sure everything is working..
        /*r = NSMakeRect(100,100,50,50);
        [ctxt DPSmoveto:
                  r.origin.x+10:
                  r.origin.y+(r.size.height/2)];
        DPSlineto(ctxt,
                  r.origin.x+r.size.width-10,
                  r.origin.y+(r.size.height));*/

        [font set];
        [[NSColor blackColor] set];
        // DPSshow
        DPSmoveto(ctxt, 20,280);
        DPSshow(ctxt, "show");
        // DPSxshow
        DPSmoveto(ctxt, 20,260);
        DPSxshow(ctxt, "xshow", offsets, len);
        // DPSashow
        DPSmoveto(ctxt, 140,240);
        DPSashow(ctxt, 10,10, "ashow");
        // DPSwidthshow
        DPSmoveto(ctxt, 20,220);
        DPSwidthshow(ctxt, 10,10, 's', "widthshow");
        // DPSawidthshow
        DPSmoveto(ctxt, 20,200);
        DPSawidthshow(ctxt, 10,10, 's', 10,10, "awidthshow");
        // DPSyshow
        DPSmoveto(ctxt, 20,180);
        DPSyshow(ctxt, "yshow", offsets, len);

        DPSstroke(ctxt);
        [view unlockFocus];
        [win flushWindow];
    }

    // NSString -drawAtPoint:withAttributes
    /*{
      NSDictionary *attribs;
      id objects[4], keys[4];
      int n = 0;

      keys[n] = (id) NSFontAttributeName;
      objects[n++] = font;
      keys[n] = (id) NSLigatureAttributeName;
      objects[n++] = [NSNumber numberWithInt: 0];

      attribs = [NSDictionary dictionaryWithObjects: objects
                                            forKeys: keys
                                              count: n];

      [view lockFocus];
      [str drawAtPoint: NSMakePoint(20, 200) withAttributes: attribs];
      [view unlockFocus];
      [win flushWindow];
    }*/

    [NSApp run];

    [pool release];
    return 0;
}