139 lines
3.2 KiB
Objective-C
139 lines
3.2 KiB
Objective-C
#import <OpenGL/gl.h>
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#import "GBView.h"
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#import "GBButtons.h"
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#import "NSString+StringForKey.h"
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@implementation GBView
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{
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uint32_t *image_buffers[3];
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unsigned char current_buffer;
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}
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- (void) _init
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{
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image_buffers[0] = malloc(160 * 144 * 4);
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image_buffers[1] = malloc(160 * 144 * 4);
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image_buffers[2] = malloc(160 * 144 * 4);
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_shouldBlendFrameWithPrevious = 1;
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}
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- (unsigned char) numberOfBuffers
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{
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return _shouldBlendFrameWithPrevious? 3 : 2;
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}
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- (void)dealloc
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{
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free(image_buffers[0]);
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free(image_buffers[1]);
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free(image_buffers[2]);
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}
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- (instancetype)initWithCoder:(NSCoder *)coder
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{
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if (!(self = [super initWithCoder:coder]))
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{
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return self;
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}
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[self _init];
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return self;
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}
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- (instancetype)initWithFrame:(NSRect)frameRect
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{
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if (!(self = [super initWithFrame:frameRect]))
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{
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return self;
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}
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[self _init];
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return self;
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}
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- (void)drawRect:(NSRect)dirtyRect {
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double scale = self.window.backingScaleFactor;
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glRasterPos2d(-1, 1);
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glPixelZoom(self.bounds.size.width / 160 * scale, self.bounds.size.height / -144 * scale);
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glDrawPixels(160, 144, GL_ABGR_EXT, GL_UNSIGNED_BYTE, image_buffers[current_buffer]);
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if (_shouldBlendFrameWithPrevious) {
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glEnable(GL_BLEND);
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glBlendFunc(GL_CONSTANT_ALPHA, GL_ONE_MINUS_CONSTANT_ALPHA);
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glBlendColor(1, 1, 1, 0.5);
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glDrawPixels(160, 144, GL_ABGR_EXT, GL_UNSIGNED_BYTE, image_buffers[(current_buffer + 2) % self.numberOfBuffers]);
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glDisable(GL_BLEND);
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}
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glFlush();
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}
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- (void) flip
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{
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current_buffer = (current_buffer + 1) % self.numberOfBuffers;
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[self setNeedsDisplay:YES];
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}
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- (uint32_t *) pixels
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{
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return image_buffers[(current_buffer + 1) % self.numberOfBuffers];
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}
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-(void)keyDown:(NSEvent *)theEvent
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{
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bool handled = false;
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NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
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for (GBButton i = 0; i < GBButtonCount; i++) {
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if ([[defaults stringForKey:button_to_preference_name(i)] isEqualToString:theEvent.charactersIgnoringModifiers]) {
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handled = true;
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switch (i) {
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case GBTurbo:
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_gb->turbo = true;
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break;
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default:
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_gb->keys[i] = true;
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break;
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}
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}
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}
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if (!handled) {
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[super keyDown:theEvent];
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}
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}
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-(void)keyUp:(NSEvent *)theEvent
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{
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bool handled = false;
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NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
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for (GBButton i = 0; i < GBButtonCount; i++) {
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if ([[defaults stringForKey:button_to_preference_name(i)] isEqualToString:theEvent.charactersIgnoringModifiers]) {
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handled = true;
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switch (i) {
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case GBTurbo:
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_gb->turbo = false;
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break;
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default:
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_gb->keys[i] = false;
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break;
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}
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}
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}
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if (!handled) {
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[super keyUp:theEvent];
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}
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}
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-(void)reshape
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{
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double scale = self.window.backingScaleFactor;
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glViewport(0, 0, self.bounds.size.width * scale, self.bounds.size.height * scale);
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}
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- (BOOL)acceptsFirstResponder
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{
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return YES;
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}
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@end
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