int ChoosePixelFormat(ref NativeAPI.PixelFormatDescriptor pfd)
{
try
{
using (DummyWindow dummyWindow = new DummyWindow(ref pfd))
{
EnumerateSupportedSamples(dummyWindow);
if (dummyWindow.Extensions.Contains("WGL_EXT_swap_control"))
{
dummyWindow.GetNativeProc("wglSwapIntervalEXT", out SwapInterval);
}
if (dummyWindow.Extensions.Contains("WGL_ARB_pixel_format"))
{
NativeAPI.wglChoosePixelFormatARB ChoosePixelFormatARB;
dummyWindow.GetNativeProc("wglChoosePixelFormatARB", out ChoosePixelFormatARB);
if (dummyWindow.Extensions.Contains("WGL_ARB_multisample") == false)
{
Samples = 0;
}
int[] attrib =
{
NativeAPI.WGL_DRAW_TO_WINDOW_ARB, 1,
NativeAPI.WGL_ACCELERATION_ARB, NativeAPI.WGL_FULL_ACCELERATION_ARB,
NativeAPI.WGL_SUPPORT_OPENGL_ARB, 1,
NativeAPI.WGL_DOUBLE_BUFFER_ARB, 1,
NativeAPI.WGL_COLOR_BITS_ARB, 24,
NativeAPI.WGL_RED_BITS_ARB, 8,
NativeAPI.WGL_GREEN_BITS_ARB, 8,
NativeAPI.WGL_BLUE_BITS_ARB, 8,
NativeAPI.WGL_ALPHA_BITS_ARB, 0,
NativeAPI.WGL_DEPTH_BITS_ARB, 24,
NativeAPI.WGL_STENCIL_BITS_ARB, 8,
0, 0,
0, 0,
0
};
if (Samples > 0)
{
attrib[attrib.Length - 5 + 0] = NativeAPI.WGL_SAMPLE_BUFFERS_ARB;
attrib[attrib.Length - 5 + 1] = 1;
attrib[attrib.Length - 5 + 2] = NativeAPI.WGL_SAMPLES_ARB;
attrib[attrib.Length - 5 + 3] = Samples;
}
int count;
bool validpf = false;
int[] piFormats = new int[1];
do
{
if (!ChoosePixelFormatARB(dummyWindow.dc, attrib, null, 1, piFormats, out count))
{
return 0;
}
if (count == 0)
{
if (Samples != 0)
{
Samples--;
attrib[attrib.Length - 5 + 3] = Samples;
}
else
{
break;
}
}
else
{
validpf = true;
}
}
while (!validpf && count == 0);
if (validpf)
{
return piFormats[0];
}
}
}
}
catch (ApplicationException)
{
}
return NativeAPI.ChoosePixelFormat(this.dc, ref pfd);
}
void MoveMouseCursorToMiddle(NativeAPI.Rectangle screenRect)
{
ignoreMouseMove = true;
NativeAPI.SetCursorPos((screenRect.Left + screenRect.Right) / 2, (screenRect.Top + screenRect.Bottom) / 2);
}
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);
}
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;
}
}
