src/MacOSX/EmulatorView.mm

/*
 *      EmulatorView.mm - Custom NSView for Basilisk II graphics output
 *
 *      $Id: EmulatorView.mm,v 1.3 2002/05/12 10:34:16 nigel Exp $
 *
 *  Basilisk II (C) 1997-2002 Christian Bauer
 *
 *  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.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#import "sysdeps.h"                     // Types used in Basilisk C++ code,

#define DEBUG 0
#import <debug.h>

#import <Cocoa/Cocoa.h>

#import "main_macosx.h"         // For WarningAlert() et al prototypes
#import "misc_macosx.h"         // For InfoSheet() prototype
#import "video_macosx.h"        // For init_* globals, and bitmap drawing strategy

#import "EmulatorView.h"

@implementation EmulatorView


//
// Standard NSView methods that we override
//

- (id) initWithFrame: (NSRect) frameRect
{
        self = [super initWithFrame: frameRect];

        output = self;          // Set global for access by Basilisk C++ code
//      bitmap = nil;           // Set by readyToDraw:
        drawView = NO;          // Disable drawing until later
        fullScreen = NO;

#ifdef SAVE_GSTATE
        [self allocateGState];
#endif

        return self;
}

- (void) dealloc
{
#ifdef SAVE_GSTATE
        [self releaseGState];
#endif
        [super dealloc];
}

// Mouse click in this window. If window is not active, should click be passed to this view?
- (BOOL) acceptsFirstMouse: (NSEvent *) event
{
        return [self mouseInView];
}


#include <adb.h>

static int prevFlags;

- (void) flagsChanged: (NSEvent *) event
{
        int     flags = [event modifierFlags];

        if ( (flags & NSAlphaShiftKeyMask) != (prevFlags & NSAlphaShiftKeyMask) )
                if ( flags & NSAlphaShiftKeyMask )
                        ADBKeyDown(0x39);       // CAPS_LOCK
                else
                        ADBKeyUp(0x39);

        if ( (flags & NSShiftKeyMask) != (prevFlags & NSShiftKeyMask) )
                if ( flags & NSShiftKeyMask )
                        ADBKeyDown(0x38);       // SHIFT_LEFT
                else
                        ADBKeyUp(0x38);

        if ( (flags & NSControlKeyMask) != (prevFlags & NSControlKeyMask) )
                if ( flags & NSControlKeyMask )
                        ADBKeyDown(0x36);       // CTL_LEFT
                else
                        ADBKeyUp(0x36);

        if ( (flags & NSAlternateKeyMask) != (prevFlags & NSAlternateKeyMask) )
                if ( flags & NSAlternateKeyMask )
                        ADBKeyDown(0x3a);       // OPTION_LEFT
                else
                        ADBKeyUp(0x3a);

        if ( (flags & NSCommandKeyMask) != (prevFlags & NSCommandKeyMask) )
                if ( flags & NSCommandKeyMask )
                        ADBKeyDown(0x37);       // APPLE_LEFT
                else
                        ADBKeyUp(0x37);

        prevFlags = flags;
}

- (BOOL) mouseInView: (NSEvent *) event
{
        NSPoint loc = [event locationInWindow];
        NSRect  box;
        if ( fullScreen )
                return YES;
        else
                box = [self frame];
        D(NSLog (@"%s - loc.x=%f, loc.y=%f, box.origin.x=%f, box.origin.y=%f",
                                __PRETTY_FUNCTION__, loc.x, loc.y, box.origin.x, box.origin.y));
        return [self mouse: loc inRect: box];
}

- (BOOL) mouseInView
{
        NSPoint loc = [[self window] mouseLocationOutsideOfEventStream];
        NSRect  box = [self frame];
        D(NSLog (@"%s - loc.x=%f, loc.y=%f, box.origin.x=%f, box.origin.y=%f",
                                __PRETTY_FUNCTION__, loc.x, loc.y, box.origin.x, box.origin.y));
        return [self mouse: loc inRect: box];
}


//
// Custom methods
//

- (void) benchmark
{
        int                     i;
        float           seconds;
        NSDate          *startDate;

        if ( ! drawView )
                return;

        drawView = NO;
        [self lockFocus];
        startDate = [NSDate date];
        for (i = 1; i < 300; ++i )
#ifdef NSBITMAP
                [bitmap draw];
#endif
#ifdef CGIMAGEREF
                cgDrawInto([self bounds], bitmap);
#endif
#ifdef CGDRAWBITMAP
                [self CGDrawBitmap];
#endif
        seconds = -[startDate timeIntervalSinceNow];
        [self unlockFocus];
        drawView = YES;

        InfoSheet(@"Benchmark run. 300 frames.",
                          [NSString stringWithFormat:
                                @"%.2f seconds, %.3f frames per second", seconds, i/seconds],
                          @"Thanks", [self window]);
}

// Return a TIFF for a snapshot of the screen image
- (NSData *) TIFFrep
{
#ifdef NSBITMAP
        return [bitmap TIFFRepresentation];
#else
        WarningAlert("How do I get a TIFF from a CGImageRef?");
#endif
        return nil;
}

// Enable display of, and drawing into, the view
#ifdef NSBITMAP
- (void) readyToDraw: (NSBitmapImageRep *) theBitmap
                  imageWidth: (short) width
                 imageHeight: (short) height
{
        bitmap = theBitmap;
#endif
#ifdef CGIMAGEREF
- (void) readyToDraw: (CGImageRef) image
                  imageWidth: (short) width
                 imageHeight: (short) height
{
        bitmap = image;
#endif
#ifdef CGDRAWBITMAP
- (void) readyToDraw: (void *) theBitmap
                           width: (short) width
                          height: (short) height
                                 bps: (short) bitsPerSample
                                 spp: (short) samplesPerPixel
                                 bpp: (short) bitsPerPixel
                                 bpr: (int)   bpr
                        isPlanar: (BOOL)  planar
                        hasAlpha: (BOOL)  alpha
{
        bitmap = theBitmap;
        bps = bitsPerSample;
        spp = samplesPerPixel;
        bpp = bitsPerPixel;
        bytesPerRow = bpr;
        isPlanar = planar;
        hasAlpha = alpha;
#endif
        x = width, y = height;
        drawView = YES;

        [[self window] setAcceptsMouseMovedEvents:      YES];
//      [[self window] setInitialFirstResponder:        self];
        [[self window] makeFirstResponder:                      self];
}

- (void) disableDrawing
{
        drawView = NO;
}

- (void) startedFullScreen
{
        fullScreen = YES;
}

- (short) width
{
        return (short)[self bounds].size.width;
}

- (short) height
{
        return (short)[self bounds].size.height;
}

- (BOOL) isFullScreen
{
        return fullScreen;
}

- (BOOL) isOpaque
{
        return drawView;
}

- (BOOL) processKeyEvent: (NSEvent *) event
{
        if ( fullScreen || [self acceptsFirstMouse: event] )
                if ( [event isARepeat] )
                        return NO;
                else
                        return YES;

        [self interpretKeyEvents:[NSArray arrayWithObject:event]];
        return NO;
}

- (void) keyDown: (NSEvent *) event
{
        if ( [self processKeyEvent: event] )
        {
                int     code = [event keyCode];

                if ( code == 126 )      code = 0x3e;    // CURS_UP
                if ( code == 125 )      code = 0x3d;    // CURS_DOWN
                if ( code == 124 )      code = 0x3c;    // CURS_RIGHT
                if ( code == 123 )      code = 0x3b;    // CURS_LEFT

                ADBKeyDown(code);
        }
}

- (void) keyUp: (NSEvent *) event
{
        if ( [self processKeyEvent: event] )
        {
                int     code = [event keyCode];

                if ( code == 126 )      code = 0x3e;    // CURS_UP
                if ( code == 125 )      code = 0x3d;    // CURS_DOWN
                if ( code == 124 )      code = 0x3c;    // CURS_RIGHT
                if ( code == 123 )      code = 0x3b;    // CURS_LEFT

                ADBKeyUp(code);
        }
}

static NSPoint  mouse;                  // Previous/current mouse location

- (BOOL) processMouseMove: (NSEvent *) event
{
        NSPoint locInView;

        if ( fullScreen )
                locInView = [NSEvent mouseLocation];
// CGAssociateMouseAndMouseCursorPosition(bool)
// which will let you unlink the mouse input and the mouse cursor. So I
// unlink the two, and the cursor doesn't move, but I still receive
// MouseMoved events and can get the movement value using
// CGGetLastMouseDelta. 
        else
                locInView = [self convertPoint: [event locationInWindow] fromView:nil];

        if ( NSEqualPoints(locInView, mouse) )
                return NO;

        mouse = locInView;

        if ( fullScreen )
        {
                ADBMouseMoved((int)mouse.x, screen_height - (int)mouse.y);
                return YES;
        }

#ifdef CAN_RESIZE_VIEW
        int     mouseY = y - y * mouse.y / [self height];
        int     mouseX =         x * mouse.x / [self width];
#else
        int     mouseY = y - (int) mouse.y;
        int     mouseX =         (int) mouse.x;
#endif

        ADBMouseMoved(mouseX, mouseY);
        return YES;
}

- (void) mouseDown: (NSEvent *) event
{
        [self processMouseMove: event];
        ADBMouseDown(0);
}

- (void) mouseDragged: (NSEvent *) event
{
        [self processMouseMove: event];
}

- (void) mouseMoved: (NSEvent *) event
{
#if DEBUG
        if ( ! [self mouseInView] )
        {
                NSLog (@"%s - Received event while outside of view", __PRETTY_FUNCTION__);
                return;
        }
#endif
        [self processMouseMove: event];
}

- (void) mouseUp: (NSEvent *) event
{
        [self processMouseMove: event];
        ADBMouseUp(0);
}

#if DEBUG
- (void) randomise              // Draw some coloured snow in the bitmap
{
        unsigned char    *pixel;

        for ( int i = 0; i < 1000; ++i )
        {
                pixel = [bitmap bitmapData]
                                + (int) (1.0 * [bitmap bytesPerRow] * 342       //[bitmap height]
                                                         * rand() / RAND_MAX);
                *pixel = (unsigned char) (256.0 * rand() / RAND_MAX);
        }
}
#endif

- (void) drawRect: (NSRect) rect
{
        if ( ! drawView )               // If the emulator is still being setup,
                return;                         // we do not want to draw

#if DEBUG
        NSLog(@"In drawRect");
        [self randomise];
#endif

#ifdef NSBITMAP
        NSRectClip(rect);
        [bitmap draw];
#endif
#ifdef CGIMAGEREF
        cgDrawInto(rect, bitmap);
#endif
#ifdef CGDRAWBITMAP
        [self CGDrawBitmap];
#endif
}

//
// Extra drawing stuff
//

#ifdef CGDRAWBITMAP
extern "C" void CGDrawBitmap();

- (void) CGDrawBitmap
{
        CGContextRef    cgContext = [[NSGraphicsContext currentContext]
                                                                                                                graphicsPort];
        NSRect                  rect = [self bounds];
        CGRect                  cgRect = {
                                                                {rect.origin.x, rect.origin.y},
                                                                {rect.size.width, rect.size.height}
                                                         };

        CGColorSpaceRef colourSpace = CGColorSpaceCreateDeviceRGB();


        CGContextSetShouldAntialias(cgContext, NO);             // Seems to have no effect?

        CGDrawBitmap(cgContext, cgRect, x, y, bps, spp, bpp,
                                        bytesPerRow, isPlanar, hasAlpha, colourSpace, &bitmap);
}
#endif

#ifdef CGIMAGEREF
void
cgDrawInto(NSRect rect, CGImageRef bitmap)
{
        CGContextRef    cgContext = [[NSGraphicsContext currentContext]
                                                                                                                graphicsPort];
        CGRect                  cgRect = {
                                                                {rect.origin.x, rect.origin.y},
                                                                {rect.size.width, rect.size.height}
                                                         };

        CGContextSetShouldAntialias(cgContext, NO);             // Seems to have no effect?

        CGContextDrawImage(cgContext, cgRect, bitmap);
}
#endif

@end
Revision:	1.4
Committed:	2002-05-30T12:46:15Z (22 years, 4 months ago) by nigel
Branch:	MAIN
Changes since 1.3:	+25 -5 lines
Log Message:	New way of storing if emulator is in full screen mode
#	User	Rev	Content
1	nigel	1.1	/*
2			* EmulatorView.mm - Custom NSView for Basilisk II graphics output
3			*
4	nigel	1.4	* $Id: EmulatorView.mm,v 1.3 2002/05/12 10:34:16 nigel Exp $
5	nigel	1.1	*
6			* Basilisk II (C) 1997-2002 Christian Bauer
7			*
8			* This program is free software; you can redistribute it and/or modify
9			* it under the terms of the GNU General Public License as published by
10			* the Free Software Foundation; either version 2 of the License, or
11			* (at your option) any later version.
12			*
13			* This program is distributed in the hope that it will be useful,
14			* but WITHOUT ANY WARRANTY; without even the implied warranty of
15			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16			* GNU General Public License for more details.
17			*
18			* You should have received a copy of the GNU General Public License
19			* along with this program; if not, write to the Free Software
20			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21			*/
22
23			#import "sysdeps.h" // Types used in Basilisk C++ code,
24
25			#define DEBUG 0
26			#import <debug.h>
27
28			#import <Cocoa/Cocoa.h>
29
30			#import "main_macosx.h" // For WarningAlert() et al prototypes
31			#import "misc_macosx.h" // For InfoSheet() prototype
32			#import "video_macosx.h" // For init_* globals, and bitmap drawing strategy
33
34			#import "EmulatorView.h"
35
36			@implementation EmulatorView
37
38
39			//
40			// Standard NSView methods that we override
41			//
42
43			- (id) initWithFrame: (NSRect) frameRect
44			{
45			self = [super initWithFrame: frameRect];
46
47			output = self; // Set global for access by Basilisk C++ code
48			// bitmap = nil; // Set by readyToDraw:
49			drawView = NO; // Disable drawing until later
50	nigel	1.4	fullScreen = NO;
51	nigel	1.1
52			#ifdef SAVE_GSTATE
53			[self allocateGState];
54			#endif
55
56			return self;
57			}
58
59			- (void) dealloc
60			{
61			#ifdef SAVE_GSTATE
62			[self releaseGState];
63			#endif
64			[super dealloc];
65			}
66
67			// Mouse click in this window. If window is not active, should click be passed to this view?
68			- (BOOL) acceptsFirstMouse: (NSEvent *) event
69			{
70			return [self mouseInView];
71			}
72
73
74			#include <adb.h>
75
76			static int prevFlags;
77
78			- (void) flagsChanged: (NSEvent *) event
79			{
80			int flags = [event modifierFlags];
81
82			if ( (flags & NSAlphaShiftKeyMask) != (prevFlags & NSAlphaShiftKeyMask) )
83			if ( flags & NSAlphaShiftKeyMask )
84			ADBKeyDown(0x39); // CAPS_LOCK
85			else
86			ADBKeyUp(0x39);
87
88			if ( (flags & NSShiftKeyMask) != (prevFlags & NSShiftKeyMask) )
89			if ( flags & NSShiftKeyMask )
90			ADBKeyDown(0x38); // SHIFT_LEFT
91			else
92			ADBKeyUp(0x38);
93
94			if ( (flags & NSControlKeyMask) != (prevFlags & NSControlKeyMask) )
95			if ( flags & NSControlKeyMask )
96			ADBKeyDown(0x36); // CTL_LEFT
97			else
98			ADBKeyUp(0x36);
99
100			if ( (flags & NSAlternateKeyMask) != (prevFlags & NSAlternateKeyMask) )
101			if ( flags & NSAlternateKeyMask )
102			ADBKeyDown(0x3a); // OPTION_LEFT
103			else
104			ADBKeyUp(0x3a);
105
106			if ( (flags & NSCommandKeyMask) != (prevFlags & NSCommandKeyMask) )
107			if ( flags & NSCommandKeyMask )
108			ADBKeyDown(0x37); // APPLE_LEFT
109			else
110			ADBKeyUp(0x37);
111
112			prevFlags = flags;
113			}
114
115			- (BOOL) mouseInView: (NSEvent *) event
116			{
117			NSPoint loc = [event locationInWindow];
118	nigel	1.4	NSRect box;
119			if ( fullScreen )
120			return YES;
121			else
122			box = [self frame];
123	nigel	1.1	D(NSLog (@"%s - loc.x=%f, loc.y=%f, box.origin.x=%f, box.origin.y=%f",
124			__PRETTY_FUNCTION__, loc.x, loc.y, box.origin.x, box.origin.y));
125			return [self mouse: loc inRect: box];
126			}
127
128			- (BOOL) mouseInView
129			{
130			NSPoint loc = [[self window] mouseLocationOutsideOfEventStream];
131			NSRect box = [self frame];
132			D(NSLog (@"%s - loc.x=%f, loc.y=%f, box.origin.x=%f, box.origin.y=%f",
133			__PRETTY_FUNCTION__, loc.x, loc.y, box.origin.x, box.origin.y));
134			return [self mouse: loc inRect: box];
135			}
136
137
138			//
139			// Custom methods
140			//
141
142			- (void) benchmark
143			{
144			int i;
145			float seconds;
146			NSDate *startDate;
147
148			if ( ! drawView )
149			return;
150
151			drawView = NO;
152			[self lockFocus];
153			startDate = [NSDate date];
154			for (i = 1; i < 300; ++i )
155			#ifdef NSBITMAP
156			[bitmap draw];
157			#endif
158			#ifdef CGIMAGEREF
159			cgDrawInto([self bounds], bitmap);
160			#endif
161			#ifdef CGDRAWBITMAP
162			[self CGDrawBitmap];
163			#endif
164			seconds = -[startDate timeIntervalSinceNow];
165			[self unlockFocus];
166			drawView = YES;
167
168			InfoSheet(@"Benchmark run. 300 frames.",
169			[NSString stringWithFormat:
170			@"%.2f seconds, %.3f frames per second", seconds, i/seconds],
171			@"Thanks", [self window]);
172			}
173
174			// Return a TIFF for a snapshot of the screen image
175			- (NSData *) TIFFrep
176			{
177			#ifdef NSBITMAP
178			return [bitmap TIFFRepresentation];
179			#else
180			WarningAlert("How do I get a TIFF from a CGImageRef?");
181			#endif
182			return nil;
183			}
184
185			// Enable display of, and drawing into, the view
186			#ifdef NSBITMAP
187			- (void) readyToDraw: (NSBitmapImageRep *) theBitmap
188			imageWidth: (short) width
189			imageHeight: (short) height
190			{
191			bitmap = theBitmap;
192			#endif
193			#ifdef CGIMAGEREF
194			- (void) readyToDraw: (CGImageRef) image
195			imageWidth: (short) width
196			imageHeight: (short) height
197			{
198			bitmap = image;
199			#endif
200			#ifdef CGDRAWBITMAP
201			- (void) readyToDraw: (void *) theBitmap
202			width: (short) width
203			height: (short) height
204			bps: (short) bitsPerSample
205			spp: (short) samplesPerPixel
206			bpp: (short) bitsPerPixel
207			bpr: (int) bpr
208			isPlanar: (BOOL) planar
209			hasAlpha: (BOOL) alpha
210			{
211			bitmap = theBitmap;
212			bps = bitsPerSample;
213			spp = samplesPerPixel;
214			bpp = bitsPerPixel;
215			bytesPerRow = bpr;
216			isPlanar = planar;
217			hasAlpha = alpha;
218			#endif
219			x = width, y = height;
220			drawView = YES;
221
222			[[self window] setAcceptsMouseMovedEvents: YES];
223			// [[self window] setInitialFirstResponder: self];
224			[[self window] makeFirstResponder: self];
225			}
226
227			- (void) disableDrawing
228			{
229			drawView = NO;
230			}
231
232	nigel	1.4	- (void) startedFullScreen
233			{
234			fullScreen = YES;
235			}
236
237	nigel	1.1	- (short) width
238			{
239			return (short)[self bounds].size.width;
240			}
241
242			- (short) height
243			{
244			return (short)[self bounds].size.height;
245			}
246
247	nigel	1.4	- (BOOL) isFullScreen
248			{
249			return fullScreen;
250			}
251
252	nigel	1.1	- (BOOL) isOpaque
253			{
254			return drawView;
255			}
256
257			- (BOOL) processKeyEvent: (NSEvent *) event
258			{
259	nigel	1.4	if ( fullScreen \|\| [self acceptsFirstMouse: event] )
260	nigel	1.1	if ( [event isARepeat] )
261			return NO;
262			else
263			return YES;
264
265			[self interpretKeyEvents:[NSArray arrayWithObject:event]];
266			return NO;
267			}
268
269			- (void) keyDown: (NSEvent *) event
270			{
271			if ( [self processKeyEvent: event] )
272	nigel	1.2	{
273			int code = [event keyCode];
274
275			if ( code == 126 ) code = 0x3e; // CURS_UP
276			if ( code == 125 ) code = 0x3d; // CURS_DOWN
277			if ( code == 124 ) code = 0x3c; // CURS_RIGHT
278			if ( code == 123 ) code = 0x3b; // CURS_LEFT
279
280			ADBKeyDown(code);
281			}
282	nigel	1.1	}
283
284			- (void) keyUp: (NSEvent *) event
285			{
286			if ( [self processKeyEvent: event] )
287	nigel	1.2	{
288			int code = [event keyCode];
289
290			if ( code == 126 ) code = 0x3e; // CURS_UP
291			if ( code == 125 ) code = 0x3d; // CURS_DOWN
292			if ( code == 124 ) code = 0x3c; // CURS_RIGHT
293			if ( code == 123 ) code = 0x3b; // CURS_LEFT
294
295			ADBKeyUp(code);
296			}
297	nigel	1.1	}
298
299			static NSPoint mouse; // Previous/current mouse location
300
301			- (BOOL) processMouseMove: (NSEvent *) event
302			{
303			NSPoint locInView;
304
305	nigel	1.4	if ( fullScreen )
306	nigel	1.1	locInView = [NSEvent mouseLocation];
307	nigel	1.4	// CGAssociateMouseAndMouseCursorPosition(bool)
308			// which will let you unlink the mouse input and the mouse cursor. So I
309			// unlink the two, and the cursor doesn't move, but I still receive
310			// MouseMoved events and can get the movement value using
311			// CGGetLastMouseDelta.
312	nigel	1.1	else
313			locInView = [self convertPoint: [event locationInWindow] fromView:nil];
314
315			if ( NSEqualPoints(locInView, mouse) )
316			return NO;
317
318			mouse = locInView;
319
320	nigel	1.4	if ( fullScreen )
321	nigel	1.1	{
322			ADBMouseMoved((int)mouse.x, screen_height - (int)mouse.y);
323			return YES;
324			}
325
326			#ifdef CAN_RESIZE_VIEW
327			int mouseY = y - y * mouse.y / [self height];
328			int mouseX = x * mouse.x / [self width];
329			#else
330			int mouseY = y - (int) mouse.y;
331			int mouseX = (int) mouse.x;
332			#endif
333
334			ADBMouseMoved(mouseX, mouseY);
335			return YES;
336			}
337
338			- (void) mouseDown: (NSEvent *) event
339			{
340			[self processMouseMove: event];
341			ADBMouseDown(0);
342			}
343
344			- (void) mouseDragged: (NSEvent *) event
345			{
346			[self processMouseMove: event];
347			}
348
349			- (void) mouseMoved: (NSEvent *) event
350			{
351			#if DEBUG
352			if ( ! [self mouseInView] )
353			{
354			NSLog (@"%s - Received event while outside of view", __PRETTY_FUNCTION__);
355			return;
356			}
357			#endif
358			[self processMouseMove: event];
359			}
360
361			- (void) mouseUp: (NSEvent *) event
362			{
363			[self processMouseMove: event];
364			ADBMouseUp(0);
365			}
366
367			#if DEBUG
368			- (void) randomise // Draw some coloured snow in the bitmap
369			{
370			unsigned char *pixel;
371
372			for ( int i = 0; i < 1000; ++i )
373			{
374			pixel = [bitmap bitmapData]
375			+ (int) (1.0 * [bitmap bytesPerRow] * 342 //[bitmap height]
376			* rand() / RAND_MAX);
377			pixel = (unsigned char) (256.0 rand() / RAND_MAX);
378			}
379			}
380			#endif
381
382			- (void) drawRect: (NSRect) rect
383			{
384			if ( ! drawView ) // If the emulator is still being setup,
385			return; // we do not want to draw
386
387			#if DEBUG
388			NSLog(@"In drawRect");
389			[self randomise];
390			#endif
391
392			#ifdef NSBITMAP
393			NSRectClip(rect);
394			[bitmap draw];
395			#endif
396			#ifdef CGIMAGEREF
397			cgDrawInto(rect, bitmap);
398			#endif
399			#ifdef CGDRAWBITMAP
400			[self CGDrawBitmap];
401			#endif
402			}
403
404			//
405			// Extra drawing stuff
406			//
407
408			#ifdef CGDRAWBITMAP
409			extern "C" void CGDrawBitmap();
410
411			- (void) CGDrawBitmap
412			{
413			CGContextRef cgContext = [[NSGraphicsContext currentContext]
414			graphicsPort];
415			NSRect rect = [self bounds];
416			CGRect cgRect = {
417			{rect.origin.x, rect.origin.y},
418			{rect.size.width, rect.size.height}
419			};
420
421			CGColorSpaceRef colourSpace = CGColorSpaceCreateDeviceRGB();
422
423
424			CGContextSetShouldAntialias(cgContext, NO); // Seems to have no effect?
425
426			CGDrawBitmap(cgContext, cgRect, x, y, bps, spp, bpp,
427			bytesPerRow, isPlanar, hasAlpha, colourSpace, &bitmap);
428			}
429			#endif
430
431			#ifdef CGIMAGEREF
432			void
433			cgDrawInto(NSRect rect, CGImageRef bitmap)
434			{
435			CGContextRef cgContext = [[NSGraphicsContext currentContext]
436			graphicsPort];
437			CGRect cgRect = {
438			{rect.origin.x, rect.origin.y},
439			{rect.size.width, rect.size.height}
440			};
441
442			CGContextSetShouldAntialias(cgContext, NO); // Seems to have no effect?
443
444			CGContextDrawImage(cgContext, cgRect, bitmap);
445			}
446			#endif
447
448	nigel	1.3	@end