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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin
// +build !ios
#include "_cgo_export.h"
#include <pthread.h>
#include <stdio.h>
#import <Cocoa/Cocoa.h>
#import <Foundation/Foundation.h>
#import <OpenGL/gl3.h>
// The variables did not exist on older OS X releases,
// we use the old variables deprecated on macOS to define them.
#if __MAC_OS_X_VERSION_MAX_ALLOWED < 101200
enum
{
NSEventTypeScrollWheel = NSScrollWheel,
NSEventTypeKeyDown = NSKeyDown
};
enum
{
NSWindowStyleMaskTitled = NSTitledWindowMask,
NSWindowStyleMaskResizable = NSResizableWindowMask,
NSWindowStyleMaskMiniaturizable = NSMiniaturizableWindowMask,
NSWindowStyleMaskClosable = NSClosableWindowMask
};
#endif
void makeCurrentContext(uintptr_t context) {
NSOpenGLContext* ctx = (NSOpenGLContext*)context;
[ctx makeCurrentContext];
}
void flushContext(uintptr_t context) {
NSOpenGLContext* ctx = (NSOpenGLContext*)context;
[ctx flushBuffer];
}
uint64 threadID() {
uint64 id;
if (pthread_threadid_np(pthread_self(), &id)) {
abort();
}
return id;
}
@interface ScreenGLView : NSOpenGLView<NSWindowDelegate>
{
}
@end
@implementation ScreenGLView
- (void)prepareOpenGL {
[super prepareOpenGL];
[self setWantsBestResolutionOpenGLSurface:YES];
GLint swapInt = 1;
NSOpenGLContext *ctx = [self openGLContext];
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
[ctx setValues:&swapInt forParameter:NSOpenGLCPSwapInterval];
#pragma clang diagnostic pop
// Using attribute arrays in OpenGL 3.3 requires the use of a VBA.
// But VBAs don't exist in ES 2. So we bind a default one.
GLuint vba;
glGenVertexArrays(1, &vba);
glBindVertexArray(vba);
preparedOpenGL((GoUintptr)self, (GoUintptr)ctx, (GoUintptr)vba);
}
- (void)callSetGeom {
// Calculate screen PPI.
//
// Note that the backingScaleFactor converts from logical
// pixels to actual pixels, but both of these units vary
// independently from real world size. E.g.
//
// 13" Retina Macbook Pro, 2560x1600, 227ppi, backingScaleFactor=2, scale=3.15
// 15" Retina Macbook Pro, 2880x1800, 220ppi, backingScaleFactor=2, scale=3.06
// 27" iMac, 2560x1440, 109ppi, backingScaleFactor=1, scale=1.51
// 27" Retina iMac, 5120x2880, 218ppi, backingScaleFactor=2, scale=3.03
NSScreen *screen = self.window.screen;
double screenPixW = [screen frame].size.width * [screen backingScaleFactor];
CGDirectDisplayID display = (CGDirectDisplayID)[[[screen deviceDescription] valueForKey:@"NSScreenNumber"] intValue];
CGSize screenSizeMM = CGDisplayScreenSize(display); // in millimeters
float ppi = 25.4 * screenPixW / screenSizeMM.width;
float pixelsPerPt = ppi/72.0;
// The width and height reported to the geom package are the
// bounds of the OpenGL view. Several steps are necessary.
// First, [self bounds] gives us the number of logical pixels
// in the view. Multiplying this by the backingScaleFactor
// gives us the number of actual pixels.
NSRect r = [self bounds];
int w = r.size.width * [screen backingScaleFactor];
int h = r.size.height * [screen backingScaleFactor];
setGeom((GoUintptr)self, pixelsPerPt, w, h);
}
- (void)reshape {
[super reshape];
[self callSetGeom];
}
- (void)drawRect:(NSRect)theRect {
// Called during resize. Do an extra draw if we are visible.
// This gets rid of flicker when resizing.
drawgl((GoUintptr)self);
}
- (void)mouseEventNS:(NSEvent *)theEvent {
NSPoint p = [theEvent locationInWindow];
double h = self.frame.size.height;
// Both h and p are measured in Cocoa pixels, which are a fraction of
// physical pixels, so we multiply by backingScaleFactor.
double scale = [self.window.screen backingScaleFactor];
double x = p.x * scale;
double y = (h - p.y) * scale - 1; // flip origin from bottom-left to top-left.
double dx, dy;
if (theEvent.type == NSEventTypeScrollWheel) {
dx = theEvent.scrollingDeltaX;
dy = theEvent.scrollingDeltaY;
}
mouseEvent((GoUintptr)self, x, y, dx, dy, theEvent.type, theEvent.buttonNumber, theEvent.modifierFlags);
}
- (void)mouseMoved:(NSEvent *)theEvent { [self mouseEventNS:theEvent]; }
- (void)mouseDown:(NSEvent *)theEvent { [self mouseEventNS:theEvent]; }
- (void)mouseUp:(NSEvent *)theEvent { [self mouseEventNS:theEvent]; }
- (void)mouseDragged:(NSEvent *)theEvent { [self mouseEventNS:theEvent]; }
- (void)rightMouseDown:(NSEvent *)theEvent { [self mouseEventNS:theEvent]; }
- (void)rightMouseUp:(NSEvent *)theEvent { [self mouseEventNS:theEvent]; }
- (void)rightMouseDragged:(NSEvent *)theEvent { [self mouseEventNS:theEvent]; }
- (void)otherMouseDown:(NSEvent *)theEvent { [self mouseEventNS:theEvent]; }
- (void)otherMouseUp:(NSEvent *)theEvent { [self mouseEventNS:theEvent]; }
- (void)otherMouseDragged:(NSEvent *)theEvent { [self mouseEventNS:theEvent]; }
- (void)scrollWheel:(NSEvent *)theEvent { [self mouseEventNS:theEvent]; }
// raw modifier key presses
- (void)flagsChanged:(NSEvent *)theEvent {
flagEvent((GoUintptr)self, theEvent.modifierFlags);
}
// overrides special handling of escape and tab
- (BOOL)performKeyEquivalent:(NSEvent *)theEvent {
[self key:theEvent];
return YES;
}
- (void)keyDown:(NSEvent *)theEvent { [self key:theEvent]; }
- (void)keyUp:(NSEvent *)theEvent { [self key:theEvent]; }
- (void)key:(NSEvent *)theEvent {
NSRange range = [theEvent.characters rangeOfComposedCharacterSequenceAtIndex:0];
uint8_t buf[4] = {0, 0, 0, 0};
if (![theEvent.characters getBytes:buf
maxLength:4
usedLength:nil
encoding:NSUTF32LittleEndianStringEncoding
options:NSStringEncodingConversionAllowLossy
range:range
remainingRange:nil]) {
NSLog(@"failed to read key event %@", theEvent);
return;
}
uint32_t rune = (uint32_t)buf[0]<<0 | (uint32_t)buf[1]<<8 | (uint32_t)buf[2]<<16 | (uint32_t)buf[3]<<24;
uint8_t direction;
if ([theEvent isARepeat]) {
direction = 0;
} else if (theEvent.type == NSEventTypeKeyDown) {
direction = 1;
} else {
direction = 2;
}
keyEvent((GoUintptr)self, (int32_t)rune, direction, theEvent.keyCode, theEvent.modifierFlags);
}
- (void)windowDidChangeScreenProfile:(NSNotification *)notification {
[self callSetGeom];
}
// TODO: catch windowDidMiniaturize?
- (void)windowDidExpose:(NSNotification *)notification {
lifecycleVisible((GoUintptr)self, true);
}
- (void)windowDidBecomeKey:(NSNotification *)notification {
lifecycleFocused((GoUintptr)self, true);
}
- (void)windowDidResignKey:(NSNotification *)notification {
lifecycleFocused((GoUintptr)self, false);
if ([NSApp isHidden]) {
lifecycleVisible((GoUintptr)self, false);
}
}
- (void)windowWillClose:(NSNotification *)notification {
// TODO: is this right? Closing a window via the top-left red button
// seems to return early without ever calling windowClosing.
if (self.window.nextResponder == NULL) {
return; // already called close
}
windowClosing((GoUintptr)self);
[self.window.nextResponder release];
self.window.nextResponder = NULL;
}
@end
@interface AppDelegate : NSObject<NSApplicationDelegate>
{
}
@end
@implementation AppDelegate
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
driverStarted();
[[NSRunningApplication currentApplication] activateWithOptions:(NSApplicationActivateAllWindows | NSApplicationActivateIgnoringOtherApps)];
}
- (void)applicationWillTerminate:(NSNotification *)aNotification {
lifecycleDeadAll();
}
- (void)applicationWillHide:(NSNotification *)aNotification {
lifecycleHideAll();
}
@end
uintptr_t doNewWindow(int width, int height, char* title) {
NSScreen *screen = [NSScreen mainScreen];
double w = (double)width / [screen backingScaleFactor];
double h = (double)height / [screen backingScaleFactor];
__block ScreenGLView* view = NULL;
dispatch_sync(dispatch_get_main_queue(), ^{
id menuBar = [NSMenu new];
id menuItem = [NSMenuItem new];
[menuBar addItem:menuItem];
[NSApp setMainMenu:menuBar];
id menu = [NSMenu new];
NSString* name = [[NSString alloc] initWithUTF8String:title];
id hideMenuItem = [[NSMenuItem alloc] initWithTitle:@"Hide"
action:@selector(hide:) keyEquivalent:@"h"];
[menu addItem:hideMenuItem];
id quitMenuItem = [[NSMenuItem alloc] initWithTitle:@"Quit"
action:@selector(terminate:) keyEquivalent:@"q"];
[menu addItem:quitMenuItem];
[menuItem setSubmenu:menu];
NSRect rect = NSMakeRect(0, 0, w, h);
NSWindow* window = [[NSWindow alloc] initWithContentRect:rect
styleMask:NSWindowStyleMaskTitled
backing:NSBackingStoreBuffered
defer:NO];
window.styleMask |= NSWindowStyleMaskResizable;
window.styleMask |= NSWindowStyleMaskMiniaturizable;
window.styleMask |= NSWindowStyleMaskClosable;
window.title = name;
window.displaysWhenScreenProfileChanges = YES;
[window cascadeTopLeftFromPoint:NSMakePoint(20,20)];
[window setAcceptsMouseMovedEvents:YES];
NSOpenGLPixelFormatAttribute attr[] = {
NSOpenGLPFAOpenGLProfile, NSOpenGLProfileVersion3_2Core,
NSOpenGLPFAColorSize, 24,
NSOpenGLPFAAlphaSize, 8,
NSOpenGLPFADepthSize, 16,
NSOpenGLPFADoubleBuffer,
NSOpenGLPFAAllowOfflineRenderers,
0
};
id pixFormat = [[NSOpenGLPixelFormat alloc] initWithAttributes:attr];
view = [[ScreenGLView alloc] initWithFrame:rect pixelFormat:pixFormat];
[window setContentView:view];
[window setDelegate:view];
[window makeFirstResponder:view];
});
return (uintptr_t)view;
}
void doShowWindow(uintptr_t viewID) {
ScreenGLView* view = (ScreenGLView*)viewID;
dispatch_async(dispatch_get_main_queue(), ^{
[view.window makeKeyAndOrderFront:view.window];
});
}
void doCloseWindow(uintptr_t viewID) {
ScreenGLView* view = (ScreenGLView*)viewID;
dispatch_sync(dispatch_get_main_queue(), ^{
[view.window performClose:view];
});
}
void startDriver() {
[NSAutoreleasePool new];
[NSApplication sharedApplication];
[NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
AppDelegate* delegate = [[AppDelegate alloc] init];
[NSApp setDelegate:delegate];
[NSApp run];
}
void stopDriver() {
dispatch_async(dispatch_get_main_queue(), ^{
[NSApp terminate:nil];
});
}
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