uint WindowProc(IntPtr hwnd, NativeAPI.WindowMessage uMsg, uint wParam, uint lParam)
{
switch (uMsg)
{
case NativeAPI.WindowMessage.DESTROY:
NativeAPI.PostQuitMessage(0);
break;
case NativeAPI.WindowMessage.CLOSE:
OnClose();
return 0;
case NativeAPI.WindowMessage.SIZE:
NativeAPI.Rectangle rect = new NativeAPI.Rectangle();
NativeAPI.GetClientRect(handle, out rect);
if (!Fullscreen && (Width != rect.Right || Height != rect.Bottom))
{
Width = rect.Right;
Height = rect.Bottom;
OnResize(Width, Height);
}
break;
case NativeAPI.WindowMessage.ACTIVATE:
if (wParam == 0)
{
Focused = false;
OnFocusLost();
if (mouseCaptured)
{
NativeAPI.ClipCursor(IntPtr.Zero);
NativeAPI.ShowCursor(true);
}
}
else
{
Focused = true;
OnFocusGained();
if (mouseCaptured)
{
NativeAPI.ShowCursor(false);
lastX = Width / 2;
lastY = Height / 2;
NativeAPI.Rectangle crect = new NativeAPI.Rectangle(0, 0, Width, Height);
NativeAPI.ClientToScreen(handle, ref crect.LeftTop);
NativeAPI.ClientToScreen(handle, ref crect.RightBottom);
MoveMouseCursorToMiddle(crect);
NativeAPI.ClipCursor(ref crect);
}
}
break;
case NativeAPI.WindowMessage.CHAR:
OnEvent(new InputEvents.TextEvent((char)wParam));
break;
case NativeAPI.WindowMessage.KEYDOWN:
case NativeAPI.WindowMessage.SYSKEYDOWN:
if ((lParam & (1 << 30)) == 0)
{
InputEvents.Key keyDown = (wParam == NativeAPI.VK_SHIFT ? GetShiftState(true) : FromVirtualKeyCode(wParam, lParam));
bool altDown = (NativeAPI.GetAsyncKeyState(NativeAPI.VK_MENU) >> 16) != 0;
bool ctrlDown = (NativeAPI.GetAsyncKeyState(NativeAPI.VK_CONTROL) >> 16) != 0;
bool shiftDown = (NativeAPI.GetAsyncKeyState(NativeAPI.VK_SHIFT) >> 16) != 0;
OnEvent(new InputEvents.KeyPressedEvent(keyDown, altDown, ctrlDown, shiftDown));
}
break;
case NativeAPI.WindowMessage.KEYUP:
case NativeAPI.WindowMessage.SYSKEYUP:
InputEvents.Key keyUp = (wParam == NativeAPI.VK_SHIFT ? GetShiftState(false) : FromVirtualKeyCode(wParam, lParam));
bool altUp = (NativeAPI.GetAsyncKeyState(NativeAPI.VK_MENU) >> 16) != 0;
bool ctrlUp = (NativeAPI.GetAsyncKeyState(NativeAPI.VK_CONTROL) >> 16) != 0;
bool shiftUp = (NativeAPI.GetAsyncKeyState(NativeAPI.VK_SHIFT) >> 16) != 0;
OnEvent(new InputEvents.KeyReleasedEvent(keyUp, altUp, ctrlUp, shiftUp));
break;
case NativeAPI.WindowMessage.MOUSEWHEEL:
OnEvent(new InputEvents.MouseWheelEvent((int)(wParam >> 16) / 120));
break;
case NativeAPI.WindowMessage.LBUTTONDOWN:
NativeAPI.SetCapture(hwnd);
OnEvent(new InputEvents.MouseButtonPressedEvent(InputEvents.MouseButton.Left, (int)(lParam & 0xFFFF), (int)(lParam >> 16)));
break;
case NativeAPI.WindowMessage.LBUTTONUP:
OnEvent(new InputEvents.MouseButtonReleasedEvent(InputEvents.MouseButton.Left, (int)(lParam & 0xFFFF), (int)(lParam >> 16)));
NativeAPI.ReleaseCapture();
break;
case NativeAPI.WindowMessage.RBUTTONDOWN:
NativeAPI.SetCapture(hwnd);
OnEvent(new InputEvents.MouseButtonPressedEvent(InputEvents.MouseButton.Right, (int)(lParam & 0xFFFF), (int)(lParam >> 16)));
break;
case NativeAPI.WindowMessage.RBUTTONUP:
OnEvent(new InputEvents.MouseButtonReleasedEvent(InputEvents.MouseButton.Right, (int)(lParam & 0xFFFF), (int)(lParam >> 16)));
NativeAPI.ReleaseCapture();
break;
case NativeAPI.WindowMessage.MBUTTONDOWN:
NativeAPI.SetCapture(hwnd);
OnEvent(new InputEvents.MouseButtonPressedEvent(InputEvents.MouseButton.Middle, (int)(lParam & 0xFFFF), (int)(lParam >> 16)));
break;
case NativeAPI.WindowMessage.MBUTTONUP:
OnEvent(new InputEvents.MouseButtonReleasedEvent(InputEvents.MouseButton.Middle, (int)(lParam & 0xFFFF), (int)(lParam >> 16)));
NativeAPI.ReleaseCapture();
break;
case NativeAPI.WindowMessage.XBUTTONDOWN:
NativeAPI.SetCapture(hwnd);
InputEvents.MouseButton xButtonDown = (wParam >> 16 == NativeAPI.VK_XBUTTON1 ? InputEvents.MouseButton.XButton1 : InputEvents.MouseButton.XButton2);
OnEvent(new InputEvents.MouseButtonPressedEvent(xButtonDown, (int)(lParam & 0xFFFF), (int)(lParam >> 16)));
break;
case NativeAPI.WindowMessage.XBUTTONUP:
InputEvents.MouseButton xButtonUp = (wParam >> 16 == NativeAPI.VK_XBUTTON1 ? InputEvents.MouseButton.XButton1 : InputEvents.MouseButton.XButton2);
OnEvent(new InputEvents.MouseButtonReleasedEvent(xButtonUp, (int)(lParam & 0xFFFF), (int)(lParam >> 16)));
NativeAPI.ReleaseCapture();
break;
case NativeAPI.WindowMessage.MOUSEMOVE:
if (ignoreMouseMove)
{
ignoreMouseMove = false;
}
else if (Focused)
{
int newX = (int)(lParam & 0xFFFF);
int newY = (int)(lParam >> 16);
if (lastX != newX || lastY != newY)
{
OnEvent(new InputEvents.MouseMoveEvent(newX, newY));
lastX = newX;
lastY = newY;
}
if (mouseCaptured)
{
NativeAPI.Rectangle mrect = new NativeAPI.Rectangle(0, 0, Width, Height);
NativeAPI.ClientToScreen(handle, ref mrect.LeftTop);
NativeAPI.ClientToScreen(handle, ref mrect.RightBottom);
MoveMouseCursorToMiddle(mrect);
}
}
break;
}
return NativeAPI.DefWindowProc(hwnd, uMsg, wParam, lParam);
}
public void SetPositionSameAs(IPlatformWindow existingWindow)
{
WindowsWindow w = (WindowsWindow)existingWindow;
NativeAPI.Rectangle rect = new NativeAPI.Rectangle();
NativeAPI.GetWindowRect(w.handle, out rect);
NativeAPI.SetWindowPos(handle, IntPtr.Zero, rect.Left, rect.Top, 0, 0, NativeAPI.WindowPosFlags.NoSize);
}
void GetWindowStyle(bool fullscreen, bool resizable, ref int width, ref int height, out int x, out int y, out NativeAPI.WindowStyle style, out NativeAPI.WindowStyleEx styleEx)
{
style = NativeAPI.WindowStyle.ClipChildren | NativeAPI.WindowStyle.ClipSiblings;
styleEx = 0;
if (fullscreen)
{
style |= NativeAPI.WindowStyle.Popup;
styleEx |= NativeAPI.WindowStyleEx.Topmost | NativeAPI.WindowStyleEx.ApplicationWindow;
x = 0;
y = 0;
}
else
{
style |= NativeAPI.WindowStyle.Caption | NativeAPI.WindowStyle.SystemMenu | NativeAPI.WindowStyle.MinimizeBox;
if (resizable)
{
style |= NativeAPI.WindowStyle.SizeBox | NativeAPI.WindowStyle.MaximizeBox;
}
styleEx |= NativeAPI.WindowStyleEx.WindowEdge;
NativeAPI.Rectangle rect = new NativeAPI.Rectangle(0, 0, width, height);
NativeAPI.AdjustWindowRectEx(ref rect, style, false, styleEx);
x = NativeAPI.CW_USEDEFAULT;
y = NativeAPI.CW_USEDEFAULT;
width = rect.Right - rect.Left;
height = rect.Bottom - rect.Top;
}
}
public void SetMouseCaptured(bool capture)
{
if (capture)
{
if (Focused)
{
NativeAPI.ShowCursor(false);
}
NativeAPI.GetCursorPos(out mousePos);
lastX = Width / 2;
lastY = Height / 2;
if (Focused)
{
NativeAPI.Rectangle rect = new NativeAPI.Rectangle(0, 0, Width, Height);
NativeAPI.ClientToScreen(handle, ref rect.LeftTop);
NativeAPI.ClientToScreen(handle, ref rect.RightBottom);
MoveMouseCursorToMiddle(rect);
NativeAPI.ClipCursor(ref rect);
}
}
else
{
if (Focused)
{
NativeAPI.ClipCursor(IntPtr.Zero);
ignoreMouseMove = true;
NativeAPI.SetCursorPos(mousePos.x, mousePos.y);
NativeAPI.ShowCursor(true);
}
NativeAPI.ScreenToClient(handle, ref mousePos);
lastX = mousePos.x;
lastY = mousePos.y;
}
mouseCaptured = capture;
}
