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////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2009 Laurent Gomila (laurent.gom@gmail.com)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/Window/WindowImpl.hpp>
#include <SFML/Window/Event.hpp>
#include <SFML/Window/WindowListener.hpp>
#include <algorithm>
#include <cmath>
#if defined(SFML_SYSTEM_WINDOWS)
#include <SFML/Window/Win32/WindowImplWin32.hpp>
typedef sf::priv::WindowImplWin32 WindowImplType;
#elif defined(SFML_SYSTEM_LINUX) || defined(SFML_SYSTEM_FREEBSD)
#include <SFML/Window/Linux/WindowImplX11.hpp>
typedef sf::priv::WindowImplX11 WindowImplType;
#elif defined(SFML_SYSTEM_MACOS)
#include <SFML/Window/Cocoa/WindowImplCocoa.hpp>
typedef sf::priv::WindowImplCocoa WindowImplType;
#endif
namespace sf
{
namespace priv
{
////////////////////////////////////////////////////////////
/// Create a new window depending on the current OS
////////////////////////////////////////////////////////////
WindowImpl* WindowImpl::New()
{
return new WindowImplType();
}
////////////////////////////////////////////////////////////
/// Create a new window depending on the current OS
////////////////////////////////////////////////////////////
WindowImpl* WindowImpl::New(VideoMode Mode, const std::string& Title, unsigned long WindowStyle, WindowSettings& Params)
{
return new WindowImplType(Mode, Title, WindowStyle, Params);
}
////////////////////////////////////////////////////////////
/// Create a new window depending on the current OS
////////////////////////////////////////////////////////////
WindowImpl* WindowImpl::New(WindowHandle Handle, WindowSettings& Params)
{
return new WindowImplType(Handle, Params);
}
////////////////////////////////////////////////////////////
/// Default constructor
////////////////////////////////////////////////////////////
WindowImpl::WindowImpl() :
myWidth (0),
myHeight (0),
myJoyThreshold(0.1f)
{
}
////////////////////////////////////////////////////////////
/// Destructor
////////////////////////////////////////////////////////////
WindowImpl::~WindowImpl()
{
// Nothing to do
}
////////////////////////////////////////////////////////////
/// Add a listener to the window
////////////////////////////////////////////////////////////
void WindowImpl::AddListener(WindowListener* Listener)
{
if (Listener)
myListeners.insert(Listener);
}
////////////////////////////////////////////////////////////
/// Remove a listener from the window
////////////////////////////////////////////////////////////
void WindowImpl::RemoveListener(WindowListener* Listener)
{
myListeners.erase(Listener);
}
////////////////////////////////////////////////////////////
/// Initialize window's states that can't be done at construction
////////////////////////////////////////////////////////////
void WindowImpl::Initialize()
{
// Initialize the joysticks
for (unsigned int i = 0; i < JoysticksCount; ++i)
{
myJoysticks[i].Initialize(i);
myJoyStates[i] = myJoysticks[i].UpdateState();
}
}
////////////////////////////////////////////////////////////
/// Get the client width of the window
////////////////////////////////////////////////////////////
unsigned int WindowImpl::GetWidth() const
{
return myWidth;
}
////////////////////////////////////////////////////////////
/// Get the client height of the window
////////////////////////////////////////////////////////////
unsigned int WindowImpl::GetHeight() const
{
return myHeight;
}
////////////////////////////////////////////////////////////
/// Change the joystick threshold, ie. the value below which
/// no move event will be generated
////////////////////////////////////////////////////////////
void WindowImpl::SetJoystickThreshold(float Threshold)
{
myJoyThreshold = Threshold;
}
////////////////////////////////////////////////////////////
/// Process incoming events from operating system
////////////////////////////////////////////////////////////
void WindowImpl::DoEvents()
{
// Read the joysticks state and generate the appropriate events
ProcessJoystickEvents();
// Let the derived class process other events
ProcessEvents();
}
////////////////////////////////////////////////////////////
/// Check if there's an active context on the current thread
////////////////////////////////////////////////////////////
bool WindowImpl::IsContextActive()
{
return WindowImplType::IsContextActive();
}
////////////////////////////////////////////////////////////
/// Send an event to listeners
////////////////////////////////////////////////////////////
void WindowImpl::SendEvent(const Event& EventToSend)
{
for (std::set<WindowListener*>::iterator i = myListeners.begin(); i != myListeners.end(); ++i)
{
(*i)->OnEvent(EventToSend);
}
}
////////////////////////////////////////////////////////////
/// Evaluate a pixel format configuration.
/// This functions can be used by implementations that have
/// several valid formats and want to get the best one
////////////////////////////////////////////////////////////
int WindowImpl::EvaluateConfig(const VideoMode& Mode, const WindowSettings& Settings, int ColorBits, int DepthBits, int StencilBits, int Antialiasing)
{
return abs(static_cast<int>(Mode.BitsPerPixel - ColorBits)) +
abs(static_cast<int>(Settings.DepthBits - DepthBits)) +
abs(static_cast<int>(Settings.StencilBits - StencilBits)) +
abs(static_cast<int>(Settings.AntialiasingLevel - Antialiasing));
}
////////////////////////////////////////////////////////////
/// Read the joysticks state and generate the appropriate events
////////////////////////////////////////////////////////////
void WindowImpl::ProcessJoystickEvents()
{
for (unsigned int i = 0; i < JoysticksCount; ++i)
{
// Copy the previous state of the joystick and get the new one
JoystickState PreviousState = myJoyStates[i];
myJoyStates[i] = myJoysticks[i].UpdateState();
// Axis
for (unsigned int j = 0; j < myJoysticks[i].GetAxesCount(); ++j)
{
float PrevPos = PreviousState.Axis[j];
float CurrPos = myJoyStates[i].Axis[j];
if (fabs(CurrPos - PrevPos) >= myJoyThreshold)
{
Event Event;
Event.Type = Event::JoyMoved;
Event.JoyMove.JoystickId = i;
Event.JoyMove.Axis = static_cast<Joy::Axis>(j);
Event.JoyMove.Position = CurrPos;
SendEvent(Event);
}
}
// Buttons
for (unsigned int j = 0; j < myJoysticks[i].GetButtonsCount(); ++j)
{
bool PrevPressed = PreviousState.Buttons[j];
bool CurrPressed = myJoyStates[i].Buttons[j];
if ((!PrevPressed && CurrPressed) || (PrevPressed && !CurrPressed))
{
Event Event;
Event.Type = CurrPressed ? Event::JoyButtonPressed : Event::JoyButtonReleased;
Event.JoyButton.JoystickId = i;
Event.JoyButton.Button = j;
SendEvent(Event);
}
}
}
}
} // namespace priv
} // namespace sf
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