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144 lines
4.1 KiB
Objective-C
144 lines
4.1 KiB
Objective-C
// SPDX-License-Identifier: Unlicense OR MIT
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// +build darwin,!ios
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@import AppKit;
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#include <CoreFoundation/CoreFoundation.h>
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#include <OpenGL/OpenGL.h>
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#include <OpenGL/gl3.h>
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#include "_cgo_export.h"
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static void handleMouse(NSView *view, NSEvent *event, int typ, CGFloat dx, CGFloat dy) {
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NSPoint p = [view convertPoint:[event locationInWindow] fromView:nil];
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if (!event.hasPreciseScrollingDeltas) {
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// dx and dy are in rows and columns.
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dx *= 10;
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dy *= 10;
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}
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gio_onMouse((__bridge CFTypeRef)view, typ, [NSEvent pressedMouseButtons], p.x, p.y, dx, dy, [event timestamp], [event modifierFlags]);
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}
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@interface GioView : NSOpenGLView
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@end
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@implementation GioView
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- (instancetype)initWithFrame:(NSRect)frameRect
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pixelFormat:(NSOpenGLPixelFormat *)format {
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return [super initWithFrame:frameRect pixelFormat:format];
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}
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- (void)prepareOpenGL {
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[super prepareOpenGL];
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// Bind a default VBA to emulate OpenGL ES 2.
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GLuint defVBA;
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glGenVertexArrays(1, &defVBA);
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glBindVertexArray(defVBA);
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glEnable(GL_FRAMEBUFFER_SRGB);
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}
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- (BOOL)isFlipped {
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return YES;
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}
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- (void)update {
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[super update];
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[self setNeedsDisplay:YES];
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}
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- (void)drawRect:(NSRect)r {
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gio_onDraw((__bridge CFTypeRef)self);
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}
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- (void)mouseDown:(NSEvent *)event {
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handleMouse(self, event, GIO_MOUSE_DOWN, 0, 0);
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}
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- (void)mouseUp:(NSEvent *)event {
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handleMouse(self, event, GIO_MOUSE_UP, 0, 0);
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}
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- (void)middleMouseDown:(NSEvent *)event {
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handleMouse(self, event, GIO_MOUSE_DOWN, 0, 0);
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}
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- (void)middletMouseUp:(NSEvent *)event {
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handleMouse(self, event, GIO_MOUSE_UP, 0, 0);
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}
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- (void)rightMouseDown:(NSEvent *)event {
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handleMouse(self, event, GIO_MOUSE_DOWN, 0, 0);
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}
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- (void)rightMouseUp:(NSEvent *)event {
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handleMouse(self, event, GIO_MOUSE_UP, 0, 0);
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}
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- (void)mouseMoved:(NSEvent *)event {
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handleMouse(self, event, GIO_MOUSE_MOVE, 0, 0);
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}
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- (void)mouseDragged:(NSEvent *)event {
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handleMouse(self, event, GIO_MOUSE_MOVE, 0, 0);
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}
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- (void)scrollWheel:(NSEvent *)event {
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CGFloat dx = -event.scrollingDeltaX;
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CGFloat dy = -event.scrollingDeltaY;
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handleMouse(self, event, GIO_MOUSE_SCROLL, dx, dy);
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}
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- (void)keyDown:(NSEvent *)event {
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NSString *keys = [event charactersIgnoringModifiers];
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gio_onKeys((__bridge CFTypeRef)self, (char *)[keys UTF8String], [event timestamp], [event modifierFlags]);
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[self interpretKeyEvents:[NSArray arrayWithObject:event]];
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}
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- (void)insertText:(id)string {
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const char *utf8 = [string UTF8String];
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gio_onText((__bridge CFTypeRef)self, (char *)utf8);
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}
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- (void)doCommandBySelector:(SEL)sel {
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// Don't pass commands up the responder chain.
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// They will end up in a beep.
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}
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@end
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CFTypeRef gio_createGLView(void) {
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@autoreleasepool {
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NSOpenGLPixelFormatAttribute attr[] = {
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NSOpenGLPFAOpenGLProfile, NSOpenGLProfileVersion3_2Core,
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NSOpenGLPFAColorSize, 24,
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NSOpenGLPFADepthSize, 16,
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NSOpenGLPFAAccelerated,
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// Opt-in to automatic GPU switching. CGL-only property.
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kCGLPFASupportsAutomaticGraphicsSwitching,
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NSOpenGLPFAAllowOfflineRenderers,
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0
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};
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id pixFormat = [[NSOpenGLPixelFormat alloc] initWithAttributes:attr];
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NSRect frame = NSMakeRect(0, 0, 0, 0);
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GioView* view = [[GioView alloc] initWithFrame:frame pixelFormat:pixFormat];
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[view setWantsBestResolutionOpenGLSurface:YES];
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[view setWantsLayer:YES]; // The default in Mojave.
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return CFBridgingRetain(view);
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}
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}
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void gio_setNeedsDisplay(CFTypeRef viewRef) {
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NSOpenGLView *view = (__bridge NSOpenGLView *)viewRef;
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[view setNeedsDisplay:YES];
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}
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CFTypeRef gio_contextForView(CFTypeRef viewRef) {
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NSOpenGLView *view = (__bridge NSOpenGLView *)viewRef;
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return (__bridge CFTypeRef)view.openGLContext;
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}
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void gio_clearCurrentContext(void) {
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[NSOpenGLContext clearCurrentContext];
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}
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void gio_makeCurrentContext(CFTypeRef ctxRef) {
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NSOpenGLContext *ctx = (__bridge NSOpenGLContext *)ctxRef;
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[ctx makeCurrentContext];
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}
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void gio_lockContext(CFTypeRef ctxRef) {
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NSOpenGLContext *ctx = (__bridge NSOpenGLContext *)ctxRef;
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CGLLockContext([ctx CGLContextObj]);
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}
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void gio_unlockContext(CFTypeRef ctxRef) {
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NSOpenGLContext *ctx = (__bridge NSOpenGLContext *)ctxRef;
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CGLUnlockContext([ctx CGLContextObj]);
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}
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