764 lines
20 KiB
C++
764 lines
20 KiB
C++
/*
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* Copyright 2011-2016 Branimir Karadzic. All rights reserved.
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* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
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*/
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#include "entry_p.h"
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#if ENTRY_CONFIG_USE_NATIVE && (BX_PLATFORM_BSD || BX_PLATFORM_LINUX || BX_PLATFORM_RPI)
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#define XK_MISCELLANY
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#define XK_LATIN1
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#include <X11/keysymdef.h>
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#include <X11/Xlib.h> // will include X11 which #defines None... Don't mess with order of includes.
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#include <bgfx/bgfxplatform.h>
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#undef None
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#include <bx/thread.h>
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#include <bx/os.h>
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#include <bx/handlealloc.h>
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#include <string.h> // memset
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#include <string>
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#include <fcntl.h>
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namespace entry
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{
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///
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inline void x11SetDisplayWindow(void* _display, uint32_t _window, void* _glx = NULL)
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{
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bgfx::PlatformData pd;
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pd.ndt = _display;
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pd.nwh = (void*)(uintptr_t)_window;
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pd.context = _glx;
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pd.backBuffer = NULL;
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pd.backBufferDS = NULL;
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bgfx::setPlatformData(pd);
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}
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#define JS_EVENT_BUTTON 0x01 /* button pressed/released */
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#define JS_EVENT_AXIS 0x02 /* joystick moved */
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#define JS_EVENT_INIT 0x80 /* initial state of device */
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struct JoystickEvent
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{
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uint32_t time; /* event timestamp in milliseconds */
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int16_t value; /* value */
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uint8_t type; /* event type */
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uint8_t number; /* axis/button number */
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};
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static Key::Enum s_translateButton[] =
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{
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Key::GamepadA,
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Key::GamepadB,
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Key::GamepadX,
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Key::GamepadY,
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Key::GamepadShoulderL,
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Key::GamepadShoulderR,
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Key::GamepadBack,
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Key::GamepadStart,
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Key::GamepadGuide,
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Key::GamepadThumbL,
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Key::GamepadThumbR,
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};
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static GamepadAxis::Enum s_translateAxis[] =
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{
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GamepadAxis::LeftX,
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GamepadAxis::LeftY,
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GamepadAxis::LeftZ,
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GamepadAxis::RightX,
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GamepadAxis::RightY,
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GamepadAxis::RightZ,
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};
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struct AxisDpadRemap
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{
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Key::Enum first;
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Key::Enum second;
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};
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static AxisDpadRemap s_axisDpad[] =
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{
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{ Key::GamepadLeft, Key::GamepadRight },
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{ Key::GamepadUp, Key::GamepadDown },
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{ Key::None, Key::None },
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{ Key::GamepadLeft, Key::GamepadRight },
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{ Key::GamepadUp, Key::GamepadDown },
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{ Key::None, Key::None },
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};
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BX_STATIC_ASSERT(BX_COUNTOF(s_translateAxis) == BX_COUNTOF(s_axisDpad) );
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struct Joystick
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{
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Joystick()
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: m_fd(-1)
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{
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}
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void init()
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{
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m_fd = open("/dev/input/js0", O_RDONLY | O_NONBLOCK);
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memset(m_value, 0, sizeof(m_value) );
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// Deadzone values from xinput.h
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m_deadzone[GamepadAxis::LeftX ] =
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m_deadzone[GamepadAxis::LeftY ] = 7849;
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m_deadzone[GamepadAxis::RightX] =
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m_deadzone[GamepadAxis::RightY] = 8689;
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m_deadzone[GamepadAxis::LeftZ ] =
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m_deadzone[GamepadAxis::RightZ] = 30;
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}
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void shutdown()
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{
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if (-1 != m_fd)
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{
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close(m_fd);
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}
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}
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bool filter(GamepadAxis::Enum _axis, int32_t* _value)
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{
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const int32_t old = m_value[_axis];
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const int32_t deadzone = m_deadzone[_axis];
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int32_t value = *_value;
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value = value > deadzone || value < -deadzone ? value : 0;
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m_value[_axis] = value;
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*_value = value;
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return old != value;
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}
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bool update(EventQueue& _eventQueue)
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{
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if (-1 == m_fd)
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{
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return false;
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}
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JoystickEvent event;
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int32_t bytes = read(m_fd, &event, sizeof(JoystickEvent) );
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if (bytes != sizeof(JoystickEvent) )
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{
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return false;
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}
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WindowHandle defaultWindow = { 0 };
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GamepadHandle handle = { 0 };
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if (event.type & JS_EVENT_BUTTON)
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{
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if (event.number < BX_COUNTOF(s_translateButton) )
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{
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_eventQueue.postKeyEvent(defaultWindow, s_translateButton[event.number], 0, 0 != event.value);
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}
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}
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else if (event.type & JS_EVENT_AXIS)
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{
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if (event.number < BX_COUNTOF(s_translateAxis) )
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{
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GamepadAxis::Enum axis = s_translateAxis[event.number];
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int32_t value = event.value;
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if (filter(axis, &value) )
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{
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_eventQueue.postAxisEvent(defaultWindow, handle, axis, value);
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if (Key::None != s_axisDpad[axis].first)
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{
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if (m_value[axis] == 0)
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{
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_eventQueue.postKeyEvent(defaultWindow, s_axisDpad[axis].first, 0, false);
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_eventQueue.postKeyEvent(defaultWindow, s_axisDpad[axis].second, 0, false);
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}
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else
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{
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_eventQueue.postKeyEvent(defaultWindow
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, 0 > m_value[axis] ? s_axisDpad[axis].first : s_axisDpad[axis].second
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, 0
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, true
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);
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}
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}
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}
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}
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}
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return true;
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}
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int m_fd;
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int32_t m_value[GamepadAxis::Count];
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int32_t m_deadzone[GamepadAxis::Count];
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};
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static Joystick s_joystick;
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static uint8_t s_translateKey[512];
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static void initTranslateKey(uint16_t _xk, Key::Enum _key)
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{
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_xk += 256;
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BX_CHECK(_xk < BX_COUNTOF(s_translateKey), "Out of bounds %d.", _xk);
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s_translateKey[_xk&0x1ff] = (uint8_t)_key;
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}
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Key::Enum fromXk(uint16_t _xk)
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{
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_xk += 256;
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return 512 > _xk ? (Key::Enum)s_translateKey[_xk] : Key::None;
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}
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struct MainThreadEntry
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{
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int m_argc;
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char** m_argv;
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static int32_t threadFunc(void* _userData);
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};
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struct Msg
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{
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Msg()
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: m_x(0)
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, m_y(0)
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, m_width(0)
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, m_height(0)
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, m_flags(0)
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{
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}
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int32_t m_x;
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int32_t m_y;
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uint32_t m_width;
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uint32_t m_height;
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uint32_t m_flags;
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std::string m_title;
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};
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struct Context
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{
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Context()
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: m_modifiers(Modifier::None)
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, m_exit(false)
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{
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memset(s_translateKey, 0, sizeof(s_translateKey) );
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initTranslateKey(XK_Escape, Key::Esc);
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initTranslateKey(XK_Return, Key::Return);
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initTranslateKey(XK_Tab, Key::Tab);
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initTranslateKey(XK_BackSpace, Key::Backspace);
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initTranslateKey(XK_space, Key::Space);
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initTranslateKey(XK_Up, Key::Up);
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initTranslateKey(XK_Down, Key::Down);
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initTranslateKey(XK_Left, Key::Left);
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initTranslateKey(XK_Right, Key::Right);
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initTranslateKey(XK_Insert, Key::Insert);
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initTranslateKey(XK_Delete, Key::Delete);
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initTranslateKey(XK_Home, Key::Home);
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initTranslateKey(XK_KP_End, Key::End);
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initTranslateKey(XK_Page_Up, Key::PageUp);
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initTranslateKey(XK_Page_Down, Key::PageDown);
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initTranslateKey(XK_Print, Key::Print);
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initTranslateKey(XK_equal, Key::Plus);
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initTranslateKey(XK_minus, Key::Minus);
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initTranslateKey(XK_bracketleft, Key::LeftBracket);
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initTranslateKey(XK_bracketright, Key::RightBracket);
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initTranslateKey(XK_semicolon, Key::Semicolon);
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initTranslateKey(XK_apostrophe, Key::Quote);
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initTranslateKey(XK_comma, Key::Comma);
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initTranslateKey(XK_period, Key::Period);
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initTranslateKey(XK_slash, Key::Slash);
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initTranslateKey(XK_backslash, Key::Backslash);
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initTranslateKey(XK_grave, Key::Tilde);
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initTranslateKey(XK_F1, Key::F1);
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initTranslateKey(XK_F2, Key::F2);
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initTranslateKey(XK_F3, Key::F3);
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initTranslateKey(XK_F4, Key::F4);
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initTranslateKey(XK_F5, Key::F5);
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initTranslateKey(XK_F6, Key::F6);
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initTranslateKey(XK_F7, Key::F7);
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initTranslateKey(XK_F8, Key::F8);
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initTranslateKey(XK_F9, Key::F9);
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initTranslateKey(XK_F10, Key::F10);
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initTranslateKey(XK_F11, Key::F11);
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initTranslateKey(XK_F12, Key::F12);
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initTranslateKey(XK_KP_Insert, Key::NumPad0);
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initTranslateKey(XK_KP_End, Key::NumPad1);
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initTranslateKey(XK_KP_Down, Key::NumPad2);
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initTranslateKey(XK_KP_Page_Down, Key::NumPad3);
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initTranslateKey(XK_KP_Left, Key::NumPad4);
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initTranslateKey(XK_KP_Begin, Key::NumPad5);
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initTranslateKey(XK_KP_Right, Key::NumPad6);
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initTranslateKey(XK_KP_Home, Key::NumPad7);
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initTranslateKey(XK_KP_Up, Key::NumPad8);
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initTranslateKey(XK_KP_Page_Up, Key::NumPad9);
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initTranslateKey('0', Key::Key0);
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initTranslateKey('1', Key::Key1);
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initTranslateKey('2', Key::Key2);
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initTranslateKey('3', Key::Key3);
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initTranslateKey('4', Key::Key4);
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initTranslateKey('5', Key::Key5);
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initTranslateKey('6', Key::Key6);
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initTranslateKey('7', Key::Key7);
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initTranslateKey('8', Key::Key8);
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initTranslateKey('9', Key::Key9);
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initTranslateKey('a', Key::KeyA);
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initTranslateKey('b', Key::KeyB);
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initTranslateKey('c', Key::KeyC);
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initTranslateKey('d', Key::KeyD);
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initTranslateKey('e', Key::KeyE);
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initTranslateKey('f', Key::KeyF);
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initTranslateKey('g', Key::KeyG);
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initTranslateKey('h', Key::KeyH);
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initTranslateKey('i', Key::KeyI);
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initTranslateKey('j', Key::KeyJ);
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initTranslateKey('k', Key::KeyK);
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initTranslateKey('l', Key::KeyL);
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initTranslateKey('m', Key::KeyM);
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initTranslateKey('n', Key::KeyN);
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initTranslateKey('o', Key::KeyO);
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initTranslateKey('p', Key::KeyP);
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initTranslateKey('q', Key::KeyQ);
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initTranslateKey('r', Key::KeyR);
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initTranslateKey('s', Key::KeyS);
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initTranslateKey('t', Key::KeyT);
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initTranslateKey('u', Key::KeyU);
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initTranslateKey('v', Key::KeyV);
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initTranslateKey('w', Key::KeyW);
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initTranslateKey('x', Key::KeyX);
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initTranslateKey('y', Key::KeyY);
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initTranslateKey('z', Key::KeyZ);
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m_mx = 0;
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m_my = 0;
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m_mz = 0;
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}
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int32_t run(int _argc, char** _argv)
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{
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XInitThreads();
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m_display = XOpenDisplay(0);
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int32_t screen = DefaultScreen(m_display);
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m_depth = DefaultDepth(m_display, screen);
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m_visual = DefaultVisual(m_display, screen);
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m_root = RootWindow(m_display, screen);
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memset(&m_windowAttrs, 0, sizeof(m_windowAttrs) );
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m_windowAttrs.background_pixmap = 0;
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m_windowAttrs.border_pixel = 0;
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m_windowAttrs.event_mask = 0
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| ButtonPressMask
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| ButtonReleaseMask
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| ExposureMask
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| KeyPressMask
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| KeyReleaseMask
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| PointerMotionMask
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| StructureNotifyMask
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;
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m_windowAlloc.alloc();
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m_window[0] = XCreateWindow(m_display
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, m_root
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, 0, 0
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, 1, 1, 0
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, m_depth
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, InputOutput
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, m_visual
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, CWBorderPixel|CWEventMask
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, &m_windowAttrs
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);
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// Clear window to black.
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XSetWindowAttributes attr;
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memset(&attr, 0, sizeof(attr) );
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XChangeWindowAttributes(m_display, m_window[0], CWBackPixel, &attr);
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const char* wmDeleteWindowName = "WM_DELETE_WINDOW";
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Atom wmDeleteWindow;
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XInternAtoms(m_display, (char **)&wmDeleteWindowName, 1, False, &wmDeleteWindow);
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XSetWMProtocols(m_display, m_window[0], &wmDeleteWindow, 1);
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XMapWindow(m_display, m_window[0]);
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XStoreName(m_display, m_window[0], "BGFX");
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XIM im;
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im = XOpenIM(m_display, NULL, NULL, NULL);
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XIC ic;
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ic = XCreateIC(im
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, XNInputStyle
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, 0
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| XIMPreeditNothing
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| XIMStatusNothing
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, XNClientWindow
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, m_window[0]
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, NULL
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);
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//
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x11SetDisplayWindow(m_display, m_window[0]);
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MainThreadEntry mte;
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mte.m_argc = _argc;
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mte.m_argv = _argv;
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bx::Thread thread;
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thread.init(mte.threadFunc, &mte);
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WindowHandle defaultWindow = { 0 };
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m_eventQueue.postSizeEvent(defaultWindow, 1, 1);
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s_joystick.init();
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while (!m_exit)
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{
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bool joystick = s_joystick.update(m_eventQueue);
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bool xpending = XPending(m_display);
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if (!xpending)
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{
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bx::sleep(joystick ? 8 : 16);
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}
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else
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{
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XEvent event;
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XNextEvent(m_display, &event);
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switch (event.type)
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{
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case Expose:
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break;
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case ClientMessage:
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if ( (Atom)event.xclient.data.l[0] == wmDeleteWindow)
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{
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m_eventQueue.postExitEvent();
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}
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break;
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case ButtonPress:
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case ButtonRelease:
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{
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const XButtonEvent& xbutton = event.xbutton;
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MouseButton::Enum mb = MouseButton::None;
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switch (xbutton.button)
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{
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case Button1: mb = MouseButton::Left; break;
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case Button2: mb = MouseButton::Middle; break;
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case Button3: mb = MouseButton::Right; break;
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case Button4: ++m_mz; break;
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case Button5: --m_mz; break;
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}
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WindowHandle handle = findHandle(xbutton.window);
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if (MouseButton::None != mb)
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{
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m_eventQueue.postMouseEvent(handle
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, xbutton.x
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, xbutton.y
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, 0
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, mb
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, event.type == ButtonPress
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);
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}
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else
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{
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m_eventQueue.postMouseEvent(handle
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, m_mx
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, m_my
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, m_mz
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);
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}
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}
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break;
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case MotionNotify:
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{
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const XMotionEvent& xmotion = event.xmotion;
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WindowHandle handle = findHandle(xmotion.window);
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m_mx = xmotion.x;
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m_my = xmotion.y;
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m_eventQueue.postMouseEvent(handle
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, m_mx
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, m_my
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, m_mz
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);
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}
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break;
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case KeyPress:
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case KeyRelease:
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{
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XKeyEvent& xkey = event.xkey;
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KeySym keysym = XLookupKeysym(&xkey, 0);
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switch (keysym)
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{
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case XK_Meta_L: setModifier(Modifier::LeftMeta, KeyPress == event.type); break;
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case XK_Meta_R: setModifier(Modifier::RightMeta, KeyPress == event.type); break;
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case XK_Control_L: setModifier(Modifier::LeftCtrl, KeyPress == event.type); break;
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case XK_Control_R: setModifier(Modifier::RightCtrl, KeyPress == event.type); break;
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case XK_Shift_L: setModifier(Modifier::LeftShift, KeyPress == event.type); break;
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case XK_Shift_R: setModifier(Modifier::RightShift, KeyPress == event.type); break;
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case XK_Alt_L: setModifier(Modifier::LeftAlt, KeyPress == event.type); break;
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case XK_Alt_R: setModifier(Modifier::RightAlt, KeyPress == event.type); break;
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default:
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{
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WindowHandle handle = findHandle(xkey.window);
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if (KeyPress == event.type)
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|
{
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Status status = 0;
|
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uint8_t utf8[4];
|
|
int len = Xutf8LookupString(ic, &xkey, (char*)utf8, sizeof(utf8), &keysym, &status);
|
|
switch (status)
|
|
{
|
|
case XLookupChars:
|
|
case XLookupBoth:
|
|
if (0 != len)
|
|
{
|
|
m_eventQueue.postCharEvent(handle, len, utf8);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
Key::Enum key = fromXk(keysym);
|
|
if (Key::None != key)
|
|
{
|
|
m_eventQueue.postKeyEvent(handle, key, m_modifiers, KeyPress == event.type);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ConfigureNotify:
|
|
{
|
|
const XConfigureEvent& xev = event.xconfigure;
|
|
WindowHandle handle = findHandle(xev.window);
|
|
if (isValid(handle) )
|
|
{
|
|
m_eventQueue.postSizeEvent(handle, xev.width, xev.height);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
thread.shutdown();
|
|
|
|
s_joystick.shutdown();
|
|
|
|
XDestroyIC(ic);
|
|
XCloseIM(im);
|
|
|
|
XUnmapWindow(m_display, m_window[0]);
|
|
XDestroyWindow(m_display, m_window[0]);
|
|
|
|
return thread.getExitCode();
|
|
}
|
|
|
|
void setModifier(Modifier::Enum _modifier, bool _set)
|
|
{
|
|
m_modifiers &= ~_modifier;
|
|
m_modifiers |= _set ? _modifier : 0;
|
|
}
|
|
|
|
void createWindow(WindowHandle _handle, Msg* msg)
|
|
{
|
|
Window window = XCreateWindow(m_display
|
|
, m_root
|
|
, msg->m_x
|
|
, msg->m_y
|
|
, msg->m_width
|
|
, msg->m_height
|
|
, 0
|
|
, m_depth
|
|
, InputOutput
|
|
, m_visual
|
|
, CWBorderPixel|CWEventMask
|
|
, &m_windowAttrs
|
|
);
|
|
m_window[_handle.idx] = window;
|
|
|
|
// Clear window to black.
|
|
XSetWindowAttributes attr;
|
|
memset(&attr, 0, sizeof(attr) );
|
|
XChangeWindowAttributes(m_display, window, CWBackPixel, &attr);
|
|
|
|
const char* wmDeleteWindowName = "WM_DELETE_WINDOW";
|
|
Atom wmDeleteWindow;
|
|
XInternAtoms(m_display, (char **)&wmDeleteWindowName, 1, False, &wmDeleteWindow);
|
|
XSetWMProtocols(m_display, window, &wmDeleteWindow, 1);
|
|
|
|
XMapWindow(m_display, window);
|
|
XStoreName(m_display, window, msg->m_title.c_str() );
|
|
|
|
m_eventQueue.postSizeEvent(_handle, msg->m_width, msg->m_height);
|
|
|
|
union cast
|
|
{
|
|
void* p;
|
|
::Window w;
|
|
};
|
|
|
|
cast c;
|
|
c.w = window;
|
|
m_eventQueue.postWindowEvent(_handle, c.p);
|
|
|
|
delete msg;
|
|
}
|
|
|
|
WindowHandle findHandle(Window _window)
|
|
{
|
|
bx::LwMutexScope scope(m_lock);
|
|
for (uint32_t ii = 0, num = m_windowAlloc.getNumHandles(); ii < num; ++ii)
|
|
{
|
|
uint16_t idx = m_windowAlloc.getHandleAt(ii);
|
|
if (_window == m_window[idx])
|
|
{
|
|
WindowHandle handle = { idx };
|
|
return handle;
|
|
}
|
|
}
|
|
|
|
WindowHandle invalid = { UINT16_MAX };
|
|
return invalid;
|
|
}
|
|
|
|
uint8_t m_modifiers;
|
|
bool m_exit;
|
|
|
|
int32_t m_mx;
|
|
int32_t m_my;
|
|
int32_t m_mz;
|
|
|
|
EventQueue m_eventQueue;
|
|
bx::LwMutex m_lock;
|
|
bx::HandleAllocT<ENTRY_CONFIG_MAX_WINDOWS> m_windowAlloc;
|
|
|
|
int32_t m_depth;
|
|
Visual* m_visual;
|
|
Window m_root;
|
|
|
|
XSetWindowAttributes m_windowAttrs;
|
|
|
|
Display* m_display;
|
|
Window m_window[ENTRY_CONFIG_MAX_WINDOWS];
|
|
uint32_t m_flags[ENTRY_CONFIG_MAX_WINDOWS];
|
|
};
|
|
|
|
static Context s_ctx;
|
|
|
|
int32_t MainThreadEntry::threadFunc(void* _userData)
|
|
{
|
|
MainThreadEntry* self = (MainThreadEntry*)_userData;
|
|
int32_t result = main(self->m_argc, self->m_argv);
|
|
s_ctx.m_exit = true;
|
|
return result;
|
|
}
|
|
|
|
const Event* poll()
|
|
{
|
|
return s_ctx.m_eventQueue.poll();
|
|
}
|
|
|
|
const Event* poll(WindowHandle _handle)
|
|
{
|
|
return s_ctx.m_eventQueue.poll(_handle);
|
|
}
|
|
|
|
void release(const Event* _event)
|
|
{
|
|
s_ctx.m_eventQueue.release(_event);
|
|
}
|
|
|
|
WindowHandle createWindow(int32_t _x, int32_t _y, uint32_t _width, uint32_t _height, uint32_t _flags, const char* _title)
|
|
{
|
|
bx::LwMutexScope scope(s_ctx.m_lock);
|
|
WindowHandle handle = { s_ctx.m_windowAlloc.alloc() };
|
|
|
|
if (isValid(handle) )
|
|
{
|
|
Msg* msg = new Msg;
|
|
msg->m_x = _x;
|
|
msg->m_y = _y;
|
|
msg->m_width = _width;
|
|
msg->m_height = _height;
|
|
msg->m_title = _title;
|
|
msg->m_flags = _flags;
|
|
s_ctx.createWindow(handle, msg);
|
|
}
|
|
|
|
return handle;
|
|
}
|
|
|
|
void destroyWindow(WindowHandle _handle)
|
|
{
|
|
if (isValid(_handle) )
|
|
{
|
|
s_ctx.m_eventQueue.postWindowEvent(_handle, NULL);
|
|
XUnmapWindow(s_ctx.m_display, s_ctx.m_window[_handle.idx]);
|
|
XDestroyWindow(s_ctx.m_display, s_ctx.m_window[_handle.idx]);
|
|
|
|
bx::LwMutexScope scope(s_ctx.m_lock);
|
|
s_ctx.m_windowAlloc.free(_handle.idx);
|
|
}
|
|
}
|
|
|
|
void setWindowPos(WindowHandle _handle, int32_t _x, int32_t _y)
|
|
{
|
|
Display* display = s_ctx.m_display;
|
|
Window window = s_ctx.m_window[_handle.idx];
|
|
XMoveWindow(display, window, _x, _y);
|
|
}
|
|
|
|
void setWindowSize(WindowHandle _handle, uint32_t _width, uint32_t _height)
|
|
{
|
|
Display* display = s_ctx.m_display;
|
|
Window window = s_ctx.m_window[_handle.idx];
|
|
XResizeWindow(display, window, int32_t(_width), int32_t(_height) );
|
|
}
|
|
|
|
void setWindowTitle(WindowHandle _handle, const char* _title)
|
|
{
|
|
Display* display = s_ctx.m_display;
|
|
Window window = s_ctx.m_window[_handle.idx];
|
|
XStoreName(display, window, _title);
|
|
}
|
|
|
|
void toggleWindowFrame(WindowHandle _handle)
|
|
{
|
|
BX_UNUSED(_handle);
|
|
}
|
|
|
|
void toggleFullscreen(WindowHandle _handle)
|
|
{
|
|
BX_UNUSED(_handle);
|
|
}
|
|
|
|
void setMouseLock(WindowHandle _handle, bool _lock)
|
|
{
|
|
BX_UNUSED(_handle, _lock);
|
|
}
|
|
|
|
} // namespace entry
|
|
|
|
int main(int _argc, char** _argv)
|
|
{
|
|
using namespace entry;
|
|
return s_ctx.run(_argc, _argv);
|
|
}
|
|
|
|
#endif // ENTRY_CONFIG_USE_NATIVE && (BX_PLATFORM_BSD || BX_PLATFORM_LINUX || BX_PLATFORM_RPI)
|