irrlicht/source/Irrlicht/CIrrDeviceSDL.h
2022-02-14 18:26:59 +01:00

280 lines
7.5 KiB
C++

// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
// This device code is based on the original SDL device implementation
// contributed by Shane Parker (sirshane).
#ifndef __C_IRR_DEVICE_SDL_H_INCLUDED__
#define __C_IRR_DEVICE_SDL_H_INCLUDED__
#include "IrrCompileConfig.h"
#ifdef _IRR_COMPILE_WITH_SDL_DEVICE_
#include "IrrlichtDevice.h"
#include "CIrrDeviceStub.h"
#include "IImagePresenter.h"
#include "ICursorControl.h"
#ifdef _IRR_EMSCRIPTEN_PLATFORM_
#include <emscripten/html5.h>
#endif
#include <SDL.h>
#include <SDL_syswm.h>
namespace irr
{
class CIrrDeviceSDL : public CIrrDeviceStub, video::IImagePresenter
{
public:
//! constructor
CIrrDeviceSDL(const SIrrlichtCreationParameters& param);
//! destructor
virtual ~CIrrDeviceSDL();
//! runs the device. Returns false if device wants to be deleted
virtual bool run() _IRR_OVERRIDE_;
//! pause execution temporarily
virtual void yield() _IRR_OVERRIDE_;
//! pause execution for a specified time
virtual void sleep(u32 timeMs, bool pauseTimer) _IRR_OVERRIDE_;
//! sets the caption of the window
virtual void setWindowCaption(const wchar_t* text) _IRR_OVERRIDE_;
//! returns if window is active. if not, nothing need to be drawn
virtual bool isWindowActive() const _IRR_OVERRIDE_;
//! returns if window has focus.
bool isWindowFocused() const _IRR_OVERRIDE_;
//! returns if window is minimized.
bool isWindowMinimized() const _IRR_OVERRIDE_;
//! returns color format of the window.
video::ECOLOR_FORMAT getColorFormat() const _IRR_OVERRIDE_;
//! presents a surface in the client area
virtual bool present(video::IImage* surface, void* windowId=0, core::rect<s32>* src=0) _IRR_OVERRIDE_;
//! notifies the device that it should close itself
virtual void closeDevice() _IRR_OVERRIDE_;
//! Sets if the window should be resizable in windowed mode.
virtual void setResizable(bool resize=false) _IRR_OVERRIDE_;
//! Minimizes the window.
virtual void minimizeWindow() _IRR_OVERRIDE_;
//! Maximizes the window.
virtual void maximizeWindow() _IRR_OVERRIDE_;
//! Restores the window size.
virtual void restoreWindow() _IRR_OVERRIDE_;
//! Checks if the Irrlicht window is running in fullscreen mode
/** \return True if window is fullscreen. */
virtual bool isFullscreen() const _IRR_OVERRIDE_;
//! Get the position of this window on screen
virtual core::position2di getWindowPosition() _IRR_OVERRIDE_;
//! Activate any joysticks, and generate events for them.
virtual bool activateJoysticks(core::array<SJoystickInfo> & joystickInfo) _IRR_OVERRIDE_;
//! Set the current Gamma Value for the Display
virtual bool setGammaRamp( f32 red, f32 green, f32 blue, f32 brightness, f32 contrast ) _IRR_OVERRIDE_;
//! Get the current Gamma Value for the Display
virtual bool getGammaRamp( f32 &red, f32 &green, f32 &blue, f32 &brightness, f32 &contrast ) _IRR_OVERRIDE_;
//! Get the device type
virtual E_DEVICE_TYPE getType() const _IRR_OVERRIDE_
{
return EIDT_SDL;
}
void SwapWindow();
//! Implementation of the linux cursor control
class CCursorControl : public gui::ICursorControl
{
public:
CCursorControl(CIrrDeviceSDL* dev)
: Device(dev), IsVisible(true)
{
}
//! Changes the visible state of the mouse cursor.
virtual void setVisible(bool visible) _IRR_OVERRIDE_
{
IsVisible = visible;
if ( visible )
SDL_ShowCursor( SDL_ENABLE );
else
{
SDL_ShowCursor( SDL_DISABLE );
}
}
//! Returns if the cursor is currently visible.
virtual bool isVisible() const _IRR_OVERRIDE_
{
return IsVisible;
}
//! Sets the new position of the cursor.
virtual void setPosition(const core::position2d<f32> &pos) _IRR_OVERRIDE_
{
setPosition(pos.X, pos.Y);
}
//! Sets the new position of the cursor.
virtual void setPosition(f32 x, f32 y) _IRR_OVERRIDE_
{
setPosition((s32)(x*Device->Width), (s32)(y*Device->Height));
}
//! Sets the new position of the cursor.
virtual void setPosition(const core::position2d<s32> &pos) _IRR_OVERRIDE_
{
setPosition(pos.X, pos.Y);
}
//! Sets the new position of the cursor.
virtual void setPosition(s32 x, s32 y) _IRR_OVERRIDE_
{
SDL_WarpMouseInWindow(Device->Window, x, y);
}
//! Returns the current position of the mouse cursor.
virtual const core::position2d<s32>& getPosition(bool updateCursor) _IRR_OVERRIDE_
{
if ( updateCursor )
updateCursorPos();
return CursorPos;
}
//! Returns the current position of the mouse cursor.
virtual core::position2d<f32> getRelativePosition(bool updateCursor) _IRR_OVERRIDE_
{
if ( updateCursor )
updateCursorPos();
return core::position2d<f32>(CursorPos.X / (f32)Device->Width,
CursorPos.Y / (f32)Device->Height);
}
virtual void setReferenceRect(core::rect<s32>* rect=0) _IRR_OVERRIDE_
{
}
private:
void updateCursorPos()
{
#ifdef _IRR_EMSCRIPTEN_PLATFORM_
EmscriptenPointerlockChangeEvent pointerlockStatus; // let's hope that test is not expensive ...
if ( emscripten_get_pointerlock_status(&pointerlockStatus) == EMSCRIPTEN_RESULT_SUCCESS )
{
if ( pointerlockStatus.isActive )
{
CursorPos.X += Device->MouseXRel;
CursorPos.Y += Device->MouseYRel;
Device->MouseXRel = 0;
Device->MouseYRel = 0;
}
else
{
CursorPos.X = Device->MouseX;
CursorPos.Y = Device->MouseY;
}
}
#else
CursorPos.X = Device->MouseX;
CursorPos.Y = Device->MouseY;
if (CursorPos.X < 0)
CursorPos.X = 0;
if (CursorPos.X > (s32)Device->Width)
CursorPos.X = Device->Width;
if (CursorPos.Y < 0)
CursorPos.Y = 0;
if (CursorPos.Y > (s32)Device->Height)
CursorPos.Y = Device->Height;
#endif
}
CIrrDeviceSDL* Device;
core::position2d<s32> CursorPos;
bool IsVisible;
};
private:
#ifdef _IRR_EMSCRIPTEN_PLATFORM_
static EM_BOOL MouseUpDownCallback(int eventType, const EmscriptenMouseEvent * event, void* userData);
static EM_BOOL MouseEnterCallback(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData);
static EM_BOOL MouseLeaveCallback(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData);
#endif
// Check if it's a special key like left, right, up down and so on which shouldn't have a Unicode character.
bool isNoUnicodeKey(EKEY_CODE key) const;
//! create the driver
void createDriver();
bool createWindow();
void createKeyMap();
void logAttributes();
SDL_GLContext Context;
SDL_Window *Window;
int SDL_Flags;
#if defined(_IRR_COMPILE_WITH_JOYSTICK_EVENTS_)
core::array<SDL_Joystick*> Joysticks;
#endif
s32 MouseX, MouseY;
s32 MouseXRel, MouseYRel;
u32 MouseButtonStates;
u32 Width, Height;
bool Resizable;
bool WindowMinimized;
struct SKeyMap
{
SKeyMap() {}
SKeyMap(s32 x11, s32 win32)
: SDLKey(x11), Win32Key(win32)
{
}
s32 SDLKey;
s32 Win32Key;
bool operator<(const SKeyMap& o) const
{
return SDLKey<o.SDLKey;
}
};
core::array<SKeyMap> KeyMap;
SDL_SysWMinfo Info;
};
} // end namespace irr
#endif // _IRR_COMPILE_WITH_SDL_DEVICE_
#endif // __C_IRR_DEVICE_SDL_H_INCLUDED__