bgfx/examples/common/entry/entry_osx.mm

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/*
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* Copyright 2011-2016 Branimir Karadzic. All rights reserved.
* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
*/
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#include "entry_p.h"
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#if ENTRY_CONFIG_USE_NATIVE && BX_PLATFORM_OSX
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#import <Cocoa/Cocoa.h>
#include <bgfx/bgfxplatform.h>
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#include <bx/uint32_t.h>
#include <bx/thread.h>
#include <bx/os.h>
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#include <bx/handlealloc.h>
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@interface AppDelegate : NSObject<NSApplicationDelegate>
{
bool terminated;
}
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+ (AppDelegate *)sharedDelegate;
- (id)init;
- (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender;
- (bool)applicationHasTerminated;
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@end
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@interface Window : NSObject<NSWindowDelegate>
{
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uint32_t windowCount;
}
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+ (Window*)sharedDelegate;
- (id)init;
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- (void)windowCreated:(NSWindow*)window;
- (void)windowWillClose:(NSNotification*)notification;
- (BOOL)windowShouldClose:(NSWindow*)window;
- (void)windowDidResize:(NSNotification*)notification;
- (void)windowDidBecomeKey:(NSNotification *)notification;
- (void)windowDidResignKey:(NSNotification *)notification;
@end
namespace entry
{
static WindowHandle s_defaultWindow = { 0 }; // TODO: Add support for more windows
static uint8_t s_translateKey[256];
struct MainThreadEntry
{
int m_argc;
char** m_argv;
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static int32_t threadFunc(void* _userData)
{
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CFBundleRef mainBundle = CFBundleGetMainBundle();
if ( mainBundle != nil )
{
CFURLRef resourcesURL = CFBundleCopyResourcesDirectoryURL(mainBundle);
if ( resourcesURL != nil )
{
char path[PATH_MAX];
if (CFURLGetFileSystemRepresentation(resourcesURL, TRUE, (UInt8 *)path, PATH_MAX) )
{
chdir(path);
}
CFRelease(resourcesURL);
}
}
MainThreadEntry* self = (MainThreadEntry*)_userData;
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return main(self->m_argc, self->m_argv);
}
};
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struct Context
{
Context()
: m_scrollf(0.0f)
, m_mx(0)
, m_my(0)
, m_scroll(0)
, m_style(0)
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, m_exit(false)
, m_fullscreen(false)
{
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s_translateKey[27] = Key::Esc;
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s_translateKey[uint8_t('\n')] = Key::Return;
s_translateKey[uint8_t('\t')] = Key::Tab;
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s_translateKey[127] = Key::Backspace;
s_translateKey[uint8_t(' ')] = Key::Space;
s_translateKey[uint8_t('+')] =
s_translateKey[uint8_t('=')] = Key::Plus;
s_translateKey[uint8_t('_')] =
s_translateKey[uint8_t('-')] = Key::Minus;
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s_translateKey[uint8_t('~')] =
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s_translateKey[uint8_t('`')] = Key::Tilde;
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s_translateKey[uint8_t(':')] =
s_translateKey[uint8_t(';')] = Key::Semicolon;
s_translateKey[uint8_t('"')] =
s_translateKey[uint8_t('\'')] = Key::Quote;
s_translateKey[uint8_t('{')] =
s_translateKey[uint8_t('[')] = Key::LeftBracket;
s_translateKey[uint8_t('}')] =
s_translateKey[uint8_t(']')] = Key::RightBracket;
s_translateKey[uint8_t('<')] =
s_translateKey[uint8_t(',')] = Key::Comma;
s_translateKey[uint8_t('>')] =
s_translateKey[uint8_t('.')] = Key::Period;
s_translateKey[uint8_t('?')] =
s_translateKey[uint8_t('/')] = Key::Slash;
s_translateKey[uint8_t('|')] =
s_translateKey[uint8_t('\\')] = Key::Backslash;
s_translateKey[uint8_t('0')] = Key::Key0;
s_translateKey[uint8_t('1')] = Key::Key1;
s_translateKey[uint8_t('2')] = Key::Key2;
s_translateKey[uint8_t('3')] = Key::Key3;
s_translateKey[uint8_t('4')] = Key::Key4;
s_translateKey[uint8_t('5')] = Key::Key5;
s_translateKey[uint8_t('6')] = Key::Key6;
s_translateKey[uint8_t('7')] = Key::Key7;
s_translateKey[uint8_t('8')] = Key::Key8;
s_translateKey[uint8_t('9')] = Key::Key9;
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for (char ch = 'a'; ch <= 'z'; ++ch)
{
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s_translateKey[uint8_t(ch)] =
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s_translateKey[uint8_t(ch - ' ')] = Key::KeyA + (ch - 'a');
}
}
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NSEvent* waitEvent()
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{
return [NSApp
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nextEventMatchingMask:NSAnyEventMask
untilDate:[NSDate distantFuture] // wait for event
inMode:NSDefaultRunLoopMode
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dequeue:YES
];
}
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NSEvent* peekEvent()
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{
return [NSApp
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nextEventMatchingMask:NSAnyEventMask
untilDate:[NSDate distantPast] // do not wait for event
inMode:NSDefaultRunLoopMode
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dequeue:YES
];
}
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void getMousePos(int* outX, int* outY)
{
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WindowHandle handle = { 0 };
NSWindow* window = m_window[handle.idx];
NSRect originalFrame = [window frame];
NSPoint location = [window mouseLocationOutsideOfEventStream];
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NSRect adjustFrame = [window contentRectForFrameRect: originalFrame];
int x = location.x;
int y = (int)adjustFrame.size.height - (int)location.y;
// clamp within the range of the window
if (x < 0) x = 0;
if (y < 0) y = 0;
if (x > (int)adjustFrame.size.width) x = (int)adjustFrame.size.width;
if (y > (int)adjustFrame.size.height) y = (int)adjustFrame.size.height;
*outX = x;
*outY = y;
}
uint8_t translateModifiers(int flags)
{
uint8_t mask = 0;
if (flags & NSShiftKeyMask)
mask |= Modifier::LeftShift | Modifier::RightShift;
if (flags & NSAlternateKeyMask)
mask |= Modifier::LeftAlt | Modifier::RightAlt;
if (flags & NSControlKeyMask)
mask |= Modifier::LeftCtrl | Modifier::RightCtrl;
if (flags & NSCommandKeyMask)
mask |= Modifier::LeftMeta | Modifier::RightMeta;
return mask;
}
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Key::Enum handleKeyEvent(NSEvent* event, uint8_t* specialKeys, uint8_t* _pressedChar)
{
NSString* key = [event charactersIgnoringModifiers];
unichar keyChar = 0;
if ([key length] == 0)
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{
return Key::None;
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}
keyChar = [key characterAtIndex:0];
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*_pressedChar = (uint8_t)keyChar;
int keyCode = keyChar;
*specialKeys = translateModifiers([event modifierFlags]);
// if this is a unhandled key just return None
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if (keyCode < 256)
{
return (Key::Enum)s_translateKey[keyCode];
}
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switch (keyCode)
{
case NSF1FunctionKey: return Key::F1;
case NSF2FunctionKey: return Key::F2;
case NSF3FunctionKey: return Key::F3;
case NSF4FunctionKey: return Key::F4;
case NSF5FunctionKey: return Key::F5;
case NSF6FunctionKey: return Key::F6;
case NSF7FunctionKey: return Key::F7;
case NSF8FunctionKey: return Key::F8;
case NSF9FunctionKey: return Key::F9;
case NSF10FunctionKey: return Key::F10;
case NSF11FunctionKey: return Key::F11;
case NSF12FunctionKey: return Key::F12;
case NSLeftArrowFunctionKey: return Key::Left;
case NSRightArrowFunctionKey: return Key::Right;
case NSUpArrowFunctionKey: return Key::Up;
case NSDownArrowFunctionKey: return Key::Down;
case NSPageUpFunctionKey: return Key::PageUp;
case NSPageDownFunctionKey: return Key::PageDown;
case NSHomeFunctionKey: return Key::Home;
case NSEndFunctionKey: return Key::End;
case NSPrintScreenFunctionKey: return Key::Print;
}
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return Key::None;
}
bool dispatchEvent(NSEvent* event)
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{
if (event)
{
NSEventType eventType = [event type];
switch (eventType)
{
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case NSMouseMoved:
case NSLeftMouseDragged:
case NSRightMouseDragged:
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case NSOtherMouseDragged:
{
getMousePos(&m_mx, &m_my);
m_eventQueue.postMouseEvent(s_defaultWindow, m_mx, m_my, m_scroll);
break;
}
case NSLeftMouseDown:
{
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// TODO: remove!
// Command + Left Mouse Button acts as middle! This just a temporary solution!
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// This is because the average OSX user doesn't have middle mouse click.
MouseButton::Enum mb = ([event modifierFlags] & NSCommandKeyMask) ? MouseButton::Middle : MouseButton::Left;
m_eventQueue.postMouseEvent(s_defaultWindow, m_mx, m_my, m_scroll, mb, true);
break;
}
case NSLeftMouseUp:
{
m_eventQueue.postMouseEvent(s_defaultWindow, m_mx, m_my, m_scroll, MouseButton::Left, false);
m_eventQueue.postMouseEvent(s_defaultWindow, m_mx, m_my, m_scroll, MouseButton::Middle, false); // TODO: remove!
break;
}
case NSRightMouseDown:
{
m_eventQueue.postMouseEvent(s_defaultWindow, m_mx, m_my, m_scroll, MouseButton::Right, true);
break;
}
case NSRightMouseUp:
{
m_eventQueue.postMouseEvent(s_defaultWindow, m_mx, m_my, m_scroll, MouseButton::Right, false);
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break;
}
case NSOtherMouseDown:
{
m_eventQueue.postMouseEvent(s_defaultWindow, m_mx, m_my, m_scroll, MouseButton::Middle, true);
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break;
}
case NSOtherMouseUp:
{
m_eventQueue.postMouseEvent(s_defaultWindow, m_mx, m_my, m_scroll, MouseButton::Middle, false);
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break;
}
case NSScrollWheel:
{
m_scrollf += [event deltaY];
m_scroll = (int32_t)m_scrollf;
m_eventQueue.postMouseEvent(s_defaultWindow, m_mx, m_my, m_scroll);
break;
}
case NSKeyDown:
{
uint8_t modifiers = 0;
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uint8_t pressedChar[4];
Key::Enum key = handleKeyEvent(event, &modifiers, &pressedChar[0]);
// Returning false means that we take care of the key (instead of the default behavior)
if (key != Key::None)
{
if (key == Key::KeyQ && (modifiers & Modifier::RightMeta) )
{
m_eventQueue.postExitEvent();
}
else
{
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enum { ShiftMask = Modifier::LeftShift|Modifier::RightShift };
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m_eventQueue.postCharEvent(s_defaultWindow, 1, pressedChar);
m_eventQueue.postKeyEvent(s_defaultWindow, key, modifiers, true);
return false;
}
}
break;
}
case NSKeyUp:
{
uint8_t modifiers = 0;
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uint8_t pressedChar[4];
Key::Enum key = handleKeyEvent(event, &modifiers, &pressedChar[0]);
BX_UNUSED(pressedChar);
if (key != Key::None)
{
m_eventQueue.postKeyEvent(s_defaultWindow, key, modifiers, false);
return false;
}
break;
}
}
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[NSApp sendEvent:event];
[NSApp updateWindows];
return true;
}
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return false;
}
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void windowDidResize()
{
WindowHandle handle = { 0 };
NSWindow* window = m_window[handle.idx];
NSRect originalFrame = [window frame];
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NSRect rect = [window contentRectForFrameRect: originalFrame];
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uint32_t width = uint32_t(rect.size.width);
uint32_t height = uint32_t(rect.size.height);
m_eventQueue.postSizeEvent(handle, width, height);
// Make sure mouse button state is 'up' after resize.
m_eventQueue.postMouseEvent(s_defaultWindow, m_mx, m_my, m_scroll, MouseButton::Left, false);
m_eventQueue.postMouseEvent(s_defaultWindow, m_mx, m_my, m_scroll, MouseButton::Right, false);
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}
void windowDidBecomeKey()
{
m_eventQueue.postSuspendEvent(s_defaultWindow, Suspend::WillResume);
m_eventQueue.postSuspendEvent(s_defaultWindow, Suspend::DidResume);
}
void windowDidResignKey()
{
m_eventQueue.postSuspendEvent(s_defaultWindow, Suspend::WillSuspend);
m_eventQueue.postSuspendEvent(s_defaultWindow, Suspend::DidSuspend);
}
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int32_t run(int _argc, char** _argv)
{
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[NSApplication sharedApplication];
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id dg = [AppDelegate sharedDelegate];
[NSApp setDelegate:dg];
[NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
[NSApp activateIgnoringOtherApps:YES];
[NSApp finishLaunching];
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[[NSNotificationCenter defaultCenter]
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postNotificationName:NSApplicationWillFinishLaunchingNotification
object:NSApp];
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[[NSNotificationCenter defaultCenter]
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postNotificationName:NSApplicationDidFinishLaunchingNotification
object:NSApp];
id quitMenuItem = [NSMenuItem new];
[quitMenuItem
initWithTitle:@"Quit"
action:@selector(terminate:)
keyEquivalent:@"q"];
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id appMenu = [NSMenu new];
[appMenu addItem:quitMenuItem];
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id appMenuItem = [NSMenuItem new];
[appMenuItem setSubmenu:appMenu];
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id menubar = [[NSMenu new] autorelease];
[menubar addItem:appMenuItem];
[NSApp setMainMenu:menubar];
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m_style = 0
| NSTitledWindowMask
| NSClosableWindowMask
| NSMiniaturizableWindowMask
| NSResizableWindowMask
;
NSRect screenRect = [[NSScreen mainScreen] frame];
const float centerX = (screenRect.size.width - (float)ENTRY_DEFAULT_WIDTH )*0.5f;
const float centerY = (screenRect.size.height - (float)ENTRY_DEFAULT_HEIGHT)*0.5f;
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m_windowAlloc.alloc();
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NSRect rect = NSMakeRect(centerX, centerY, ENTRY_DEFAULT_WIDTH, ENTRY_DEFAULT_HEIGHT);
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NSWindow* window = [[NSWindow alloc]
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initWithContentRect:rect
styleMask:m_style
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backing:NSBackingStoreBuffered defer:NO
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];
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NSString* appName = [[NSProcessInfo processInfo] processName];
[window setTitle:appName];
[window makeKeyAndOrderFront:window];
[window setAcceptsMouseMovedEvents:YES];
[window setBackgroundColor:[NSColor blackColor]];
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[[Window sharedDelegate] windowCreated:window];
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m_window[0] = window;
m_windowFrame = [window frame];
bgfx::osxSetNSWindow(window);
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MainThreadEntry mte;
mte.m_argc = _argc;
mte.m_argv = _argv;
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bx::Thread thread;
thread.init(mte.threadFunc, &mte);
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WindowHandle handle = { 0 };
m_eventQueue.postSizeEvent(handle, ENTRY_DEFAULT_WIDTH, ENTRY_DEFAULT_HEIGHT);
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while (!(m_exit = [dg applicationHasTerminated]) )
{
if (bgfx::RenderFrame::Exiting == bgfx::renderFrame() )
{
break;
}
while (dispatchEvent(peekEvent() ) )
{
}
}
m_eventQueue.postExitEvent();
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while (bgfx::RenderFrame::NoContext != bgfx::renderFrame() ) {};
thread.shutdown();
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return 0;
}
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bool isValid(WindowHandle _handle)
{
return m_windowAlloc.isValid(_handle.idx);
}
EventQueue m_eventQueue;
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bx::HandleAllocT<ENTRY_CONFIG_MAX_WINDOWS> m_windowAlloc;
NSWindow* m_window[ENTRY_CONFIG_MAX_WINDOWS];
NSRect m_windowFrame;
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float m_scrollf;
int32_t m_mx;
int32_t m_my;
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int32_t m_scroll;
int32_t m_style;
bool m_exit;
bool m_fullscreen;
};
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static Context s_ctx;
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const Event* poll()
{
return s_ctx.m_eventQueue.poll();
}
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const Event* poll(WindowHandle _handle)
{
return s_ctx.m_eventQueue.poll(_handle);
}
void release(const Event* _event)
{
s_ctx.m_eventQueue.release(_event);
}
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WindowHandle createWindow(int32_t _x, int32_t _y, uint32_t _width, uint32_t _height, uint32_t _flags, const char* _title)
{
BX_UNUSED(_x, _y, _width, _height, _flags, _title);
WindowHandle handle = { UINT16_MAX };
return handle;
}
void destroyWindow(WindowHandle _handle)
{
if (s_ctx.isValid(_handle) )
{
dispatch_async(dispatch_get_main_queue()
, ^{
[s_ctx.m_window[_handle.idx] performClose: nil];
});
}
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}
void setWindowPos(WindowHandle _handle, int32_t _x, int32_t _y)
{
if (s_ctx.isValid(_handle) )
{
NSWindow* window = s_ctx.m_window[_handle.idx];
NSScreen* screen = [window screen];
NSRect screenRect = [screen frame];
CGFloat menuBarHeight = [[[NSApplication sharedApplication] mainMenu] menuBarHeight];
NSPoint position = { float(_x), screenRect.size.height - menuBarHeight - float(_y) };
dispatch_async(dispatch_get_main_queue()
, ^{
[window setFrameTopLeftPoint: position];
});
}
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}
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void setWindowSize(WindowHandle _handle, uint32_t _width, uint32_t _height)
{
if (s_ctx.isValid(_handle) )
{
NSSize size = { float(_width), float(_height) };
dispatch_async(dispatch_get_main_queue()
, ^{
[s_ctx.m_window[_handle.idx] setContentSize: size];
});
}
}
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void setWindowTitle(WindowHandle _handle, const char* _title)
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{
if (s_ctx.isValid(_handle) )
{
NSString* title = [[NSString alloc] initWithCString:_title encoding:1];
dispatch_async(dispatch_get_main_queue()
, ^{
[s_ctx.m_window[_handle.idx] setTitle: title];
});
[title release];
}
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}
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void toggleWindowFrame(WindowHandle _handle)
{
if (s_ctx.isValid(_handle) )
{
s_ctx.m_style ^= NSTitledWindowMask;
dispatch_async(dispatch_get_main_queue()
, ^{
[s_ctx.m_window[_handle.idx] setStyleMask: s_ctx.m_style];
});
}
}
void toggleFullscreen(WindowHandle _handle)
{
if (s_ctx.isValid(_handle) )
{
NSWindow* window = s_ctx.m_window[_handle.idx];
NSScreen* screen = [window screen];
NSRect screenRect = [screen frame];
if (!s_ctx.m_fullscreen)
{
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s_ctx.m_style &= ~NSTitledWindowMask;
dispatch_async(dispatch_get_main_queue()
, ^{
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[NSMenu setMenuBarVisible: false];
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[window setStyleMask: s_ctx.m_style];
[window setFrame:screenRect display:YES];
});
s_ctx.m_fullscreen = true;
}
else
{
s_ctx.m_style |= NSTitledWindowMask;
dispatch_async(dispatch_get_main_queue()
, ^{
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[NSMenu setMenuBarVisible: true];
[window setStyleMask: s_ctx.m_style];
[window setFrame:s_ctx.m_windowFrame display:YES];
});
s_ctx.m_fullscreen = false;
}
}
}
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void setMouseLock(WindowHandle _handle, bool _lock)
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{
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BX_UNUSED(_handle, _lock);
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}
} // namespace entry
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@implementation AppDelegate
+ (AppDelegate *)sharedDelegate
{
static id delegate = [AppDelegate new];
return delegate;
}
- (id)init
{
self = [super init];
if (nil == self)
{
return nil;
}
self->terminated = false;
return self;
}
- (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender
{
BX_UNUSED(sender);
self->terminated = true;
return NSTerminateCancel;
}
- (bool)applicationHasTerminated
{
return self->terminated;
}
@end
@implementation Window
+ (Window*)sharedDelegate
{
static id windowDelegate = [Window new];
return windowDelegate;
}
- (id)init
{
self = [super init];
if (nil == self)
{
return nil;
}
self->windowCount = 0;
return self;
}
- (void)windowCreated:(NSWindow*)window
{
assert(window);
[window setDelegate:self];
assert(self->windowCount < ~0u);
self->windowCount += 1;
}
- (void)windowWillClose:(NSNotification*)notification
{
BX_UNUSED(notification);
}
- (BOOL)windowShouldClose:(NSWindow*)window
{
assert(window);
[window setDelegate:nil];
assert(self->windowCount);
self->windowCount -= 1;
if (self->windowCount == 0)
{
[NSApp terminate:self];
return false;
}
return true;
}
- (void)windowDidResize:(NSNotification*)notification
{
BX_UNUSED(notification);
using namespace entry;
s_ctx.windowDidResize();
}
- (void)windowDidBecomeKey:(NSNotification*)notification
{
BX_UNUSED(notification);
using namespace entry;
s_ctx.windowDidBecomeKey();
}
- (void)windowDidResignKey:(NSNotification*)notification
{
BX_UNUSED(notification);
using namespace entry;
s_ctx.windowDidResignKey();
}
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@end
int main(int _argc, char** _argv)
{
using namespace entry;
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return s_ctx.run(_argc, _argv);
}
#endif // BX_PLATFORM_OSX