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/* Copyright (c) 2018, Curtis 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];
}
|