irrlicht/source/Irrlicht/CIrrDeviceWin32.h

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// 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
#ifndef __C_IRR_DEVICE_WIN32_H_INCLUDED__
#define __C_IRR_DEVICE_WIN32_H_INCLUDED__
#ifdef _IRR_COMPILE_WITH_WINDOWS_DEVICE_
#include "CIrrDeviceStub.h"
#include "IrrlichtDevice.h"
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <mmsystem.h> // For JOYCAPS
#include <windowsx.h>
#if !defined(GET_X_LPARAM)
#define GET_X_LPARAM(lp) ((int)(short)LOWORD(lp))
#define GET_Y_LPARAM(lp) ((int)(short)HIWORD(lp))
#endif
namespace irr
{
struct SJoystickWin32Control;
class CIrrDeviceWin32 : public CIrrDeviceStub
{
friend struct SJoystickWin32Control;
public:
//! constructor
CIrrDeviceWin32(const SIrrlichtCreationParameters& params);
//! destructor
virtual ~CIrrDeviceWin32();
//! runs the device. Returns false if device wants to be deleted
bool run() override;
//! Cause the device to temporarily pause execution and let other processes to run
// This should bring down processor usage without major performance loss for Irrlicht
void yield() override;
//! Pause execution and let other processes to run for a specified amount of time.
void sleep(u32 timeMs, bool pauseTimer) override;
//! sets the caption of the window
void setWindowCaption(const wchar_t* text) override;
//! returns if window is active. if not, nothing need to be drawn
bool isWindowActive() const override;
//! returns if window has focus
bool isWindowFocused() const override;
//! returns if window is minimized
bool isWindowMinimized() const override;
//! returns last state from maximizeWindow() and restoreWindow()
bool isWindowMaximized() const override;
//! notifies the device that it should close itself
void closeDevice() override;
//! Notifies the device, that it has been resized
/** Must be publis as it is called from free function (event handler) */
void OnResized();
//! Sets if the window should be resizable in windowed mode.
void setResizable(bool resize=false) override;
//! Resize the render window.
void setWindowSize(const irr::core::dimension2d<u32>& size) override;
//! Minimizes the window.
void minimizeWindow() override;
//! Maximizes the window.
void maximizeWindow() override;
//! Restores the window size.
void restoreWindow() override;
//! Get the position of the window on screen
core::position2di getWindowPosition() override;
//! Activate any joysticks, and generate events for them.
bool activateJoysticks(core::array<SJoystickInfo> & joystickInfo) override;
//! Remove all messages pending in the system message loop
void clearSystemMessages() override;
//! Get the device type
E_DEVICE_TYPE getType() const override
{
return EIDT_WIN32;
}
//! Compares to the last call of this function to return double and triple clicks.
//! \return Returns only 1,2 or 3. A 4th click will start with 1 again.
u32 checkSuccessiveClicks(s32 mouseX, s32 mouseY, EMOUSE_INPUT_EVENT inputEvent ) override
{
// we just have to make it public
return CIrrDeviceStub::checkSuccessiveClicks(mouseX, mouseY, inputEvent );
}
//! Switch to fullscreen
bool switchToFullScreen();
// convert an Irrlicht texture to a windows cursor
HCURSOR TextureToCursor(HWND hwnd, irr::video::ITexture * tex, const core::rect<s32>& sourceRect, const core::position2d<s32> &hotspot);
//! Implementation of the win32 cursor control
class CCursorControl : public gui::ICursorControl
{
public:
CCursorControl(CIrrDeviceWin32* device, const core::dimension2d<u32>& wsize, HWND hwnd, bool fullscreen);
~CCursorControl();
//! Changes the visible state of the mouse cursor.
void setVisible(bool visible) override
{
CURSORINFO info;
info.cbSize = sizeof(CURSORINFO);
BOOL gotCursorInfo = GetCursorInfo(&info);
while ( gotCursorInfo )
{
#ifdef CURSOR_SUPPRESSED
// Since Windows 8 the cursor can be suppressed by a touch interface
if (visible && info.flags == CURSOR_SUPPRESSED)
{
break;
}
#endif
if ( (visible && info.flags == CURSOR_SHOWING) || // visible
(!visible && info.flags == 0 ) ) // hidden
{
break;
}
// this only increases an internal
// display counter in windows, so it
// might have to be called some more
const int showResult = ShowCursor(visible);
// if result has correct sign we can
// stop here as well
if (( !visible && showResult < 0 ) ||
(visible && showResult >= 0))
break;
// yes, it really must be set each time
info.cbSize = sizeof(CURSORINFO);
gotCursorInfo = GetCursorInfo(&info);
#ifdef CURSOR_SUPPRESSED
// Not sure if a cursor which we tried to hide still can be suppressed.
// I have no touch-display for testing this and MSDN doesn't describe it.
// But adding this check shouldn't hurt and might prevent an endless loop.
if (!visible && info.flags == CURSOR_SUPPRESSED)
{
break;
}
#endif
}
IsVisible = visible;
}
//! Returns if the cursor is currently visible.
bool isVisible() const override
{
return IsVisible;
}
//! Sets the new position of the cursor.
void setPosition(const core::position2d<f32> &pos) override
{
setPosition(pos.X, pos.Y);
}
//! Sets the new position of the cursor.
void setPosition(f32 x, f32 y) override
{
if (!UseReferenceRect)
setPosition(core::round32(x*WindowSize.Width), core::round32(y*WindowSize.Height));
else
setPosition(core::round32(x*ReferenceRect.getWidth()), core::round32(y*ReferenceRect.getHeight()));
}
//! Sets the new position of the cursor.
void setPosition(const core::position2d<s32> &pos) override
{
setPosition(pos.X, pos.Y);
}
//! Sets the new position of the cursor.
void setPosition(s32 x, s32 y) override
{
if (UseReferenceRect)
{
SetCursorPos(ReferenceRect.UpperLeftCorner.X + x,
ReferenceRect.UpperLeftCorner.Y + y);
}
else
{
RECT rect;
if (GetWindowRect(HWnd, &rect))
SetCursorPos(x + rect.left + BorderX, y + rect.top + BorderY);
}
CursorPos.X = x;
CursorPos.Y = y;
}
//! Returns the current position of the mouse cursor.
const core::position2d<s32>& getPosition(bool updateCursor) override
{
if ( updateCursor )
updateInternalCursorPosition();
return CursorPos;
}
//! Returns the current position of the mouse cursor.
core::position2d<f32> getRelativePosition(bool updateCursor) override
{
if ( updateCursor )
updateInternalCursorPosition();
if (!UseReferenceRect)
{
return core::position2d<f32>(CursorPos.X * InvWindowSize.Width,
CursorPos.Y * InvWindowSize.Height);
}
return core::position2d<f32>(CursorPos.X / (f32)ReferenceRect.getWidth(),
CursorPos.Y / (f32)ReferenceRect.getHeight());
}
//! Sets an absolute reference rect for calculating the cursor position.
void setReferenceRect(core::rect<s32>* rect=0) override
{
if (rect)
{
ReferenceRect = *rect;
UseReferenceRect = true;
// prevent division through zero and uneven sizes
if (!ReferenceRect.getHeight() || ReferenceRect.getHeight()%2)
ReferenceRect.LowerRightCorner.Y += 1;
if (!ReferenceRect.getWidth() || ReferenceRect.getWidth()%2)
ReferenceRect.LowerRightCorner.X += 1;
}
else
UseReferenceRect = false;
}
/** Used to notify the cursor that the window was resized. */
void OnResize(const core::dimension2d<u32>& size)
{
WindowSize = size;
if (size.Width!=0)
InvWindowSize.Width = 1.0f / size.Width;
else
InvWindowSize.Width = 0.f;
if (size.Height!=0)
InvWindowSize.Height = 1.0f / size.Height;
else
InvWindowSize.Height = 0.f;
}
/** Used to notify the cursor that the window resizable settings changed. */
void updateBorderSize(bool fullscreen, bool resizable)
{
if (!fullscreen)
{
s32 paddingBorder = 0;
2021-07-16 00:32:15 +02:00
#ifdef SM_CXPADDEDBORDER
paddingBorder = GetSystemMetrics(SM_CXPADDEDBORDER);
#endif
if (resizable)
{
BorderX = GetSystemMetrics(SM_CXSIZEFRAME) + paddingBorder;
BorderY = GetSystemMetrics(SM_CYCAPTION) + GetSystemMetrics(SM_CYSIZEFRAME) + paddingBorder;
}
else
{
BorderX = GetSystemMetrics(SM_CXDLGFRAME) + paddingBorder;
BorderY = GetSystemMetrics(SM_CYCAPTION) + GetSystemMetrics(SM_CYDLGFRAME) + paddingBorder;
}
}
else
{
BorderX = BorderY = 0;
}
}
//! Sets the active cursor icon
void setActiveIcon(gui::ECURSOR_ICON iconId) override;
//! Gets the currently active icon
gui::ECURSOR_ICON getActiveIcon() const override
{
return ActiveIcon;
}
//! Add a custom sprite as cursor icon.
gui::ECURSOR_ICON addIcon(const gui::SCursorSprite& icon) override;
//! replace the given cursor icon.
void changeIcon(gui::ECURSOR_ICON iconId, const gui::SCursorSprite& icon) override;
//! Return a system-specific size which is supported for cursors. Larger icons will fail, smaller icons might work.
core::dimension2di getSupportedIconSize() const override;
void update();
private:
//! Updates the internal cursor position
void updateInternalCursorPosition()
{
POINT p;
if (!GetCursorPos(&p))
{
DWORD xy = GetMessagePos();
p.x = GET_X_LPARAM(xy);
p.y = GET_Y_LPARAM(xy);
}
if (UseReferenceRect)
{
CursorPos.X = p.x - ReferenceRect.UpperLeftCorner.X;
CursorPos.Y = p.y - ReferenceRect.UpperLeftCorner.Y;
}
else
{
RECT rect;
if (GetWindowRect(HWnd, &rect))
{
CursorPos.X = p.x-rect.left-BorderX;
CursorPos.Y = p.y-rect.top-BorderY;
}
else
{
// window seems not to be existent, so set cursor to
// a negative value
CursorPos.X = -1;
CursorPos.Y = -1;
}
}
}
CIrrDeviceWin32* Device;
core::position2d<s32> CursorPos;
core::dimension2d<u32> WindowSize;
core::dimension2d<f32> InvWindowSize;
HWND HWnd;
s32 BorderX, BorderY;
core::rect<s32> ReferenceRect;
bool UseReferenceRect;
bool IsVisible;
struct CursorFrameW32
{
CursorFrameW32() : IconHW(0) {}
CursorFrameW32(HCURSOR icon) : IconHW(icon) {}
HCURSOR IconHW; // hardware cursor
};
struct CursorW32
{
CursorW32() {}
explicit CursorW32(HCURSOR iconHw, u32 frameTime=0) : FrameTime(frameTime)
{
Frames.push_back( CursorFrameW32(iconHw) );
}
core::array<CursorFrameW32> Frames;
u32 FrameTime;
};
core::array<CursorW32> Cursors;
gui::ECURSOR_ICON ActiveIcon;
u32 ActiveIconStartTime;
void initCursors();
};
//! returns the win32 cursor control
CCursorControl* getWin32CursorControl();
private:
//! create the driver
void createDriver();
//! Process system events
void handleSystemMessages();
void getWindowsVersion(core::stringc& version);
void resizeIfNecessary();
DWORD getWindowStyle(bool fullscreen, bool resizable) const;
HWND HWnd;
bool Resized;
bool ExternalWindow;
CCursorControl* Win32CursorControl;
SJoystickWin32Control* JoyControl;
bool WindowMaximized;
};
} // end namespace irr
#endif // _IRR_COMPILE_WITH_WINDOWS_DEVICE_
#endif // __C_IRR_DEVICE_WIN32_H_INCLUDED__