1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/* Copyright (c) 2018, June McEnroe <programble@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#import <Cocoa/Cocoa.h>
#import <err.h>
#import <stdint.h>
#import <stdlib.h>
#import <sysexits.h>
#define UNUSED __attribute__((unused))
extern int init(int argc, char *argv[]);
extern void draw(uint32_t *buf, size_t xres, size_t yres);
extern void input(char in);
@interface BufferView : NSView {
size_t bufSize;
uint32_t *buf;
}
@end
@implementation BufferView
- (void) draw {
draw(buf, [self frame].size.width, [self frame].size.height);
[self setNeedsDisplay: YES];
}
- (void) setFrameSize: (NSSize) newSize {
[super setFrameSize: newSize];
size_t newBufSize = 4 * newSize.width * newSize.height;
if (newBufSize > bufSize) {
bufSize = newBufSize;
buf = malloc(bufSize);
if (!buf) err(EX_OSERR, "malloc(%zu)", bufSize);
}
[self draw];
}
- (void) drawRect: (NSRect) UNUSED dirtyRect {
NSSize size = [self frame].size;
CGContextRef ctx = [[NSGraphicsContext currentContext] CGContext];
CGColorSpaceRef rgb = CGColorSpaceCreateDeviceRGB();
CGDataProviderRef data = CGDataProviderCreateWithData(NULL, buf, bufSize, NULL);
CGImageRef image = CGImageCreate(
size.width,
size.height,
8,
32,
4 * size.width,
rgb,
kCGBitmapByteOrder32Little | kCGImageAlphaNoneSkipFirst,
data,
NULL,
false,
kCGRenderingIntentDefault
);
CGContextDrawImage(ctx, [self frame], image);
CGImageRelease(image);
CGDataProviderRelease(data);
CGColorSpaceRelease(rgb);
}
- (BOOL) acceptsFirstResponder {
return YES;
}
- (void) keyDown: (NSEvent *) event {
char in;
BOOL converted = [
[event characters]
getBytes: &in
maxLength: 1
usedLength: NULL
encoding: NSASCIIStringEncoding
options: 0
range: NSMakeRange(0, 1)
remainingRange: NULL
];
if (converted) {
input(in);
[self draw];
}
}
@end
@interface Delegate : NSObject <NSApplicationDelegate>
@end
@implementation Delegate
- (BOOL) applicationShouldTerminateAfterLastWindowClosed:
(NSApplication *) UNUSED sender {
return YES;
}
@end
int main(int argc, char *argv[]) {
int error = init(argc, argv);
if (error) return error;
[NSApplication sharedApplication];
[NSApp setActivationPolicy: NSApplicationActivationPolicyRegular];
[NSApp setDelegate: [Delegate new]];
NSString *name = [[NSProcessInfo processInfo] processName];
NSMenu *menu = [NSMenu new];
NSMenuItem *quit = [
[NSMenuItem alloc]
initWithTitle: [@"Quit " stringByAppendingString: name]
action: @selector(terminate:)
keyEquivalent: @"q"
];
[menu addItem: quit];
NSMenuItem *menuItem = [NSMenuItem new];
[menuItem setSubmenu: menu];
[NSApp setMainMenu: [NSMenu new]];
[[NSApp mainMenu] addItem: menuItem];
NSUInteger style = NSTitledWindowMask
| NSClosableWindowMask
| NSMiniaturizableWindowMask
| NSResizableWindowMask;
NSWindow *window = [
[NSWindow alloc]
initWithContentRect: NSMakeRect(0, 0, 800, 600)
styleMask: style
backing: NSBackingStoreBuffered
defer: YES
];
[window setTitle: name];
[window center];
BufferView *view = [[BufferView alloc] initWithFrame: [window frame]];
[window setContentView: view];
[window makeKeyAndOrderFront: nil];
[NSApp activateIgnoringOtherApps: YES];
[NSApp run];
}
|