Dan Walmsley
6 years ago
3 changed files with 636 additions and 641 deletions
@ -0,0 +1,518 @@ |
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using System; |
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using System.Diagnostics.CodeAnalysis; |
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using System.Runtime.InteropServices; |
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using Avalonia.Controls; |
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using Avalonia.Input; |
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using Avalonia.Input.Raw; |
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using Avalonia.Win32.Input; |
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using static Avalonia.Win32.Interop.UnmanagedMethods; |
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|
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namespace Avalonia.Win32 |
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{ |
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public partial class WindowImpl |
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{ |
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[SuppressMessage("Microsoft.StyleCop.CSharp.NamingRules", "SA1305:FieldNamesMustNotUseHungarianNotation", |
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Justification = "Using Win32 naming for consistency.")] |
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protected virtual unsafe IntPtr AppWndProc(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam) |
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{ |
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const double wheelDelta = 120.0; |
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uint timestamp = unchecked((uint)GetMessageTime()); |
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|
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RawInputEventArgs e = null; |
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|
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switch ((WindowsMessage)msg) |
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{ |
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case WindowsMessage.WM_ACTIVATE: |
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{ |
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var wa = (WindowActivate)(ToInt32(wParam) & 0xffff); |
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|
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switch (wa) |
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{ |
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case WindowActivate.WA_ACTIVE: |
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case WindowActivate.WA_CLICKACTIVE: |
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{ |
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Activated?.Invoke(); |
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break; |
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} |
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|
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case WindowActivate.WA_INACTIVE: |
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{ |
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Deactivated?.Invoke(); |
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break; |
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} |
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} |
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|
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return IntPtr.Zero; |
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} |
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|
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case WindowsMessage.WM_NCCALCSIZE: |
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{ |
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if (ToInt32(wParam) == 1 && !HasFullDecorations || _isClientAreaExtended) |
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{ |
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return IntPtr.Zero; |
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} |
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|
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break; |
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} |
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|
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case WindowsMessage.WM_CLOSE: |
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{ |
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bool? preventClosing = Closing?.Invoke(); |
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if (preventClosing == true) |
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{ |
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return IntPtr.Zero; |
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} |
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|
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break; |
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} |
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|
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case WindowsMessage.WM_DESTROY: |
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{ |
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//Window doesn't exist anymore
|
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_hwnd = IntPtr.Zero; |
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//Remove root reference to this class, so unmanaged delegate can be collected
|
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s_instances.Remove(this); |
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Closed?.Invoke(); |
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|
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_mouseDevice.Dispose(); |
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_touchDevice?.Dispose(); |
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//Free other resources
|
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Dispose(); |
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return IntPtr.Zero; |
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} |
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|
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case WindowsMessage.WM_DPICHANGED: |
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{ |
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var dpi = ToInt32(wParam) & 0xffff; |
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var newDisplayRect = Marshal.PtrToStructure<RECT>(lParam); |
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_scaling = dpi / 96.0; |
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ScalingChanged?.Invoke(_scaling); |
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SetWindowPos(hWnd, |
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IntPtr.Zero, |
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newDisplayRect.left, |
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newDisplayRect.top, |
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newDisplayRect.right - newDisplayRect.left, |
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newDisplayRect.bottom - newDisplayRect.top, |
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SetWindowPosFlags.SWP_NOZORDER | |
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SetWindowPosFlags.SWP_NOACTIVATE); |
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return IntPtr.Zero; |
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} |
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|
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case WindowsMessage.WM_KEYDOWN: |
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case WindowsMessage.WM_SYSKEYDOWN: |
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{ |
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e = new RawKeyEventArgs( |
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WindowsKeyboardDevice.Instance, |
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timestamp, |
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_owner, |
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RawKeyEventType.KeyDown, |
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KeyInterop.KeyFromVirtualKey(ToInt32(wParam), ToInt32(lParam)), |
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WindowsKeyboardDevice.Instance.Modifiers); |
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break; |
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} |
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|
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case WindowsMessage.WM_MENUCHAR: |
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{ |
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// mute the system beep
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return (IntPtr)((int)MenuCharParam.MNC_CLOSE << 16); |
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} |
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|
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case WindowsMessage.WM_KEYUP: |
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case WindowsMessage.WM_SYSKEYUP: |
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{ |
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e = new RawKeyEventArgs( |
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WindowsKeyboardDevice.Instance, |
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timestamp, |
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_owner, |
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RawKeyEventType.KeyUp, |
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KeyInterop.KeyFromVirtualKey(ToInt32(wParam), ToInt32(lParam)), |
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WindowsKeyboardDevice.Instance.Modifiers); |
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break; |
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} |
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case WindowsMessage.WM_CHAR: |
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{ |
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// Ignore control chars
|
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if (ToInt32(wParam) >= 32) |
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{ |
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e = new RawTextInputEventArgs(WindowsKeyboardDevice.Instance, timestamp, _owner, |
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new string((char)ToInt32(wParam), 1)); |
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} |
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|
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break; |
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} |
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|
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case WindowsMessage.WM_LBUTTONDOWN: |
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case WindowsMessage.WM_RBUTTONDOWN: |
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case WindowsMessage.WM_MBUTTONDOWN: |
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case WindowsMessage.WM_XBUTTONDOWN: |
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{ |
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if (ShouldIgnoreTouchEmulatedMessage()) |
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{ |
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break; |
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} |
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|
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e = new RawPointerEventArgs( |
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_mouseDevice, |
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timestamp, |
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_owner, |
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(WindowsMessage)msg switch |
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{ |
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WindowsMessage.WM_LBUTTONDOWN => RawPointerEventType.LeftButtonDown, |
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WindowsMessage.WM_RBUTTONDOWN => RawPointerEventType.RightButtonDown, |
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WindowsMessage.WM_MBUTTONDOWN => RawPointerEventType.MiddleButtonDown, |
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WindowsMessage.WM_XBUTTONDOWN => |
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HighWord(ToInt32(wParam)) == 1 ? |
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RawPointerEventType.XButton1Down : |
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RawPointerEventType.XButton2Down |
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}, |
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DipFromLParam(lParam), GetMouseModifiers(wParam)); |
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break; |
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} |
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|
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case WindowsMessage.WM_LBUTTONUP: |
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case WindowsMessage.WM_RBUTTONUP: |
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case WindowsMessage.WM_MBUTTONUP: |
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case WindowsMessage.WM_XBUTTONUP: |
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{ |
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if (ShouldIgnoreTouchEmulatedMessage()) |
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{ |
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break; |
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} |
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|
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e = new RawPointerEventArgs( |
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_mouseDevice, |
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timestamp, |
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_owner, |
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(WindowsMessage)msg switch |
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{ |
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WindowsMessage.WM_LBUTTONUP => RawPointerEventType.LeftButtonUp, |
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WindowsMessage.WM_RBUTTONUP => RawPointerEventType.RightButtonUp, |
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WindowsMessage.WM_MBUTTONUP => RawPointerEventType.MiddleButtonUp, |
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WindowsMessage.WM_XBUTTONUP => |
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HighWord(ToInt32(wParam)) == 1 ? |
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RawPointerEventType.XButton1Up : |
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RawPointerEventType.XButton2Up, |
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}, |
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DipFromLParam(lParam), GetMouseModifiers(wParam)); |
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break; |
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} |
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|
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case WindowsMessage.WM_MOUSEMOVE: |
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{ |
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if (ShouldIgnoreTouchEmulatedMessage()) |
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{ |
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break; |
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} |
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|
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if (!_trackingMouse) |
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{ |
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var tm = new TRACKMOUSEEVENT |
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{ |
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cbSize = Marshal.SizeOf<TRACKMOUSEEVENT>(), |
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dwFlags = 2, |
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hwndTrack = _hwnd, |
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dwHoverTime = 0, |
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}; |
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|
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TrackMouseEvent(ref tm); |
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} |
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|
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e = new RawPointerEventArgs( |
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_mouseDevice, |
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timestamp, |
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_owner, |
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RawPointerEventType.Move, |
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DipFromLParam(lParam), GetMouseModifiers(wParam)); |
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|
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break; |
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} |
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|
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case WindowsMessage.WM_MOUSEWHEEL: |
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{ |
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e = new RawMouseWheelEventArgs( |
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_mouseDevice, |
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timestamp, |
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_owner, |
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PointToClient(PointFromLParam(lParam)), |
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new Vector(0, (ToInt32(wParam) >> 16) / wheelDelta), GetMouseModifiers(wParam)); |
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break; |
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} |
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|
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case WindowsMessage.WM_MOUSEHWHEEL: |
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{ |
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e = new RawMouseWheelEventArgs( |
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_mouseDevice, |
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timestamp, |
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_owner, |
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PointToClient(PointFromLParam(lParam)), |
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new Vector(-(ToInt32(wParam) >> 16) / wheelDelta, 0), GetMouseModifiers(wParam)); |
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break; |
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} |
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|
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case WindowsMessage.WM_MOUSELEAVE: |
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{ |
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_trackingMouse = false; |
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e = new RawPointerEventArgs( |
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_mouseDevice, |
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timestamp, |
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_owner, |
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RawPointerEventType.LeaveWindow, |
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new Point(-1, -1), WindowsKeyboardDevice.Instance.Modifiers); |
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break; |
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} |
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|
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case WindowsMessage.WM_NCLBUTTONDOWN: |
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case WindowsMessage.WM_NCRBUTTONDOWN: |
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case WindowsMessage.WM_NCMBUTTONDOWN: |
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case WindowsMessage.WM_NCXBUTTONDOWN: |
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{ |
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e = new RawPointerEventArgs( |
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_mouseDevice, |
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timestamp, |
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_owner, |
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(WindowsMessage)msg switch |
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{ |
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WindowsMessage.WM_NCLBUTTONDOWN => RawPointerEventType |
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.NonClientLeftButtonDown, |
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WindowsMessage.WM_NCRBUTTONDOWN => RawPointerEventType.RightButtonDown, |
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WindowsMessage.WM_NCMBUTTONDOWN => RawPointerEventType.MiddleButtonDown, |
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WindowsMessage.WM_NCXBUTTONDOWN => |
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HighWord(ToInt32(wParam)) == 1 ? |
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RawPointerEventType.XButton1Down : |
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RawPointerEventType.XButton2Down, |
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}, |
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PointToClient(PointFromLParam(lParam)), GetMouseModifiers(wParam)); |
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break; |
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} |
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case WindowsMessage.WM_TOUCH: |
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{ |
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var touchInputCount = wParam.ToInt32(); |
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var pTouchInputs = stackalloc TOUCHINPUT[touchInputCount]; |
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var touchInputs = new Span<TOUCHINPUT>(pTouchInputs, touchInputCount); |
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|
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if (GetTouchInputInfo(lParam, (uint)touchInputCount, pTouchInputs, Marshal.SizeOf<TOUCHINPUT>())) |
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{ |
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foreach (var touchInput in touchInputs) |
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{ |
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Input?.Invoke(new RawTouchEventArgs(_touchDevice, touchInput.Time, |
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_owner, |
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touchInput.Flags.HasFlagCustom(TouchInputFlags.TOUCHEVENTF_UP) ? |
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RawPointerEventType.TouchEnd : |
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touchInput.Flags.HasFlagCustom(TouchInputFlags.TOUCHEVENTF_DOWN) ? |
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RawPointerEventType.TouchBegin : |
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RawPointerEventType.TouchUpdate, |
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PointToClient(new PixelPoint(touchInput.X / 100, touchInput.Y / 100)), |
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WindowsKeyboardDevice.Instance.Modifiers, |
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touchInput.Id)); |
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} |
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|
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CloseTouchInputHandle(lParam); |
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return IntPtr.Zero; |
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} |
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|
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break; |
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} |
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case WindowsMessage.WM_NCPAINT: |
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{ |
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if (!HasFullDecorations) |
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{ |
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return IntPtr.Zero; |
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} |
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|
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break; |
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} |
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|
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case WindowsMessage.WM_NCACTIVATE: |
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{ |
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if (!HasFullDecorations) |
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{ |
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return new IntPtr(1); |
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} |
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|
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break; |
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} |
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|
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case WindowsMessage.WM_PAINT: |
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{ |
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using (_rendererLock.Lock()) |
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{ |
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if (BeginPaint(_hwnd, out PAINTSTRUCT ps) != IntPtr.Zero) |
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{ |
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var f = Scaling; |
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var r = ps.rcPaint; |
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Paint?.Invoke(new Rect(r.left / f, r.top / f, (r.right - r.left) / f, |
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(r.bottom - r.top) / f)); |
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EndPaint(_hwnd, ref ps); |
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} |
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} |
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|
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return IntPtr.Zero; |
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} |
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|
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case WindowsMessage.WM_SIZE: |
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{ |
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using (_rendererLock.Lock()) |
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{ |
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// Do nothing here, just block until the pending frame render is completed on the render thread
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} |
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var size = (SizeCommand)wParam; |
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|
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if (Resized != null && |
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(size == SizeCommand.Restored || |
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size == SizeCommand.Maximized)) |
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{ |
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var clientSize = new Size(ToInt32(lParam) & 0xffff, ToInt32(lParam) >> 16); |
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Resized(clientSize / Scaling); |
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} |
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var windowState = size == SizeCommand.Maximized ? |
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WindowState.Maximized : |
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(size == SizeCommand.Minimized ? WindowState.Minimized : WindowState.Normal); |
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if (windowState != _lastWindowState) |
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{ |
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_lastWindowState = windowState; |
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WindowStateChanged?.Invoke(windowState); |
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} |
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|
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return IntPtr.Zero; |
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} |
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|
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case WindowsMessage.WM_MOVE: |
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{ |
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PositionChanged?.Invoke(new PixelPoint((short)(ToInt32(lParam) & 0xffff), |
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(short)(ToInt32(lParam) >> 16))); |
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return IntPtr.Zero; |
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} |
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|
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case WindowsMessage.WM_GETMINMAXINFO: |
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{ |
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MINMAXINFO mmi = Marshal.PtrToStructure<MINMAXINFO>(lParam); |
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|
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if (_minSize.Width > 0) |
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{ |
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mmi.ptMinTrackSize.X = |
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(int)((_minSize.Width * Scaling) + BorderThickness.Left + BorderThickness.Right); |
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} |
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|
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if (_minSize.Height > 0) |
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{ |
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mmi.ptMinTrackSize.Y = |
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(int)((_minSize.Height * Scaling) + BorderThickness.Top + BorderThickness.Bottom); |
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} |
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|
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if (!double.IsInfinity(_maxSize.Width) && _maxSize.Width > 0) |
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{ |
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mmi.ptMaxTrackSize.X = |
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(int)((_maxSize.Width * Scaling) + BorderThickness.Left + BorderThickness.Right); |
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} |
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if (!double.IsInfinity(_maxSize.Height) && _maxSize.Height > 0) |
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{ |
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mmi.ptMaxTrackSize.Y = |
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(int)((_maxSize.Height * Scaling) + BorderThickness.Top + BorderThickness.Bottom); |
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} |
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|
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Marshal.StructureToPtr(mmi, lParam, true); |
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return IntPtr.Zero; |
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} |
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|
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case WindowsMessage.WM_DISPLAYCHANGE: |
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{ |
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(Screen as ScreenImpl)?.InvalidateScreensCache(); |
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return IntPtr.Zero; |
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} |
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} |
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|
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#if USE_MANAGED_DRAG
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if (_managedDrag.PreprocessInputEvent(ref e)) |
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return UnmanagedMethods.DefWindowProc(hWnd, msg, wParam, lParam); |
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#endif
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|
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if (e != null && Input != null) |
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{ |
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Input(e); |
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|
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if (e.Handled) |
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{ |
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return IntPtr.Zero; |
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} |
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} |
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|
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using (_rendererLock.Lock()) |
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{ |
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return DefWindowProc(hWnd, msg, wParam, lParam); |
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} |
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} |
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|
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private static int ToInt32(IntPtr ptr) |
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{ |
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if (IntPtr.Size == 4) |
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return ptr.ToInt32(); |
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|
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return (int)(ptr.ToInt64() & 0xffffffff); |
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} |
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|
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private static int HighWord(int param) => param >> 16; |
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|
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private Point DipFromLParam(IntPtr lParam) |
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{ |
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return new Point((short)(ToInt32(lParam) & 0xffff), (short)(ToInt32(lParam) >> 16)) / Scaling; |
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} |
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|
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private PixelPoint PointFromLParam(IntPtr lParam) |
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{ |
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return new PixelPoint((short)(ToInt32(lParam) & 0xffff), (short)(ToInt32(lParam) >> 16)); |
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} |
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|
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private bool ShouldIgnoreTouchEmulatedMessage() |
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{ |
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if (!_multitouch) |
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{ |
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return false; |
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} |
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|
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// MI_WP_SIGNATURE
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// https://docs.microsoft.com/en-us/windows/win32/tablet/system-events-and-mouse-messages
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const long marker = 0xFF515700L; |
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|
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var info = GetMessageExtraInfo().ToInt64(); |
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return (info & marker) == marker; |
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} |
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|
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private static RawInputModifiers GetMouseModifiers(IntPtr wParam) |
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{ |
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var keys = (ModifierKeys)ToInt32(wParam); |
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var modifiers = WindowsKeyboardDevice.Instance.Modifiers; |
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|
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if (keys.HasFlagCustom(ModifierKeys.MK_LBUTTON)) |
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{ |
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modifiers |= RawInputModifiers.LeftMouseButton; |
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} |
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|
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if (keys.HasFlagCustom(ModifierKeys.MK_RBUTTON)) |
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{ |
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modifiers |= RawInputModifiers.RightMouseButton; |
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} |
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|
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if (keys.HasFlagCustom(ModifierKeys.MK_MBUTTON)) |
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{ |
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modifiers |= RawInputModifiers.MiddleMouseButton; |
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} |
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|
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if (keys.HasFlagCustom(ModifierKeys.MK_XBUTTON1)) |
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{ |
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modifiers |= RawInputModifiers.XButton1MouseButton; |
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} |
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|
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if (keys.HasFlagCustom(ModifierKeys.MK_XBUTTON2)) |
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{ |
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modifiers |= RawInputModifiers.XButton2MouseButton; |
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} |
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|
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return modifiers; |
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} |
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} |
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} |
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@ -0,0 +1,117 @@ |
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using System; |
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using System.Collections.Generic; |
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using System.Text; |
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|
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namespace Avalonia.Win32 |
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{ |
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public partial class WindowImpl |
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{ |
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// Hit test the frame for resizing and moving.
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HitTestValues HitTestNCA(IntPtr hWnd, IntPtr wParam, IntPtr lParam) |
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{ |
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// Get the point coordinates for the hit test.
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var ptMouse = PointFromLParam(lParam); |
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|
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// Get the window rectangle.
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GetWindowRect(hWnd, out var rcWindow); |
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|
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// Get the frame rectangle, adjusted for the style without a caption.
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RECT rcFrame = new RECT(); |
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AdjustWindowRectEx(ref rcFrame, (uint)(WindowStyles.WS_OVERLAPPEDWINDOW & ~WindowStyles.WS_CAPTION), false, 0); |
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|
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RECT border_thickness = new RECT(); |
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if (GetStyle().HasFlag(WindowStyles.WS_THICKFRAME)) |
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{ |
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AdjustWindowRectEx(ref border_thickness, (uint)(GetStyle()), false, 0); |
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border_thickness.left *= -1; |
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border_thickness.top *= -1; |
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} |
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else if (GetStyle().HasFlag(WindowStyles.WS_BORDER)) |
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{ |
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border_thickness = new RECT { bottom = 1, left = 1, right = 1, top = 1 }; |
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} |
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|
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// Determine if the hit test is for resizing. Default middle (1,1).
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ushort uRow = 1; |
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ushort uCol = 1; |
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bool fOnResizeBorder = false; |
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|
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// Determine if the point is at the top or bottom of the window.
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if (ptMouse.Y >= rcWindow.top && ptMouse.Y < rcWindow.top + border_thickness.top) |
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{ |
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fOnResizeBorder = (ptMouse.Y < (rcWindow.top - rcFrame.top)); |
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uRow = 0; |
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} |
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else if (ptMouse.Y < rcWindow.bottom && ptMouse.Y >= rcWindow.bottom - border_thickness.bottom) |
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{ |
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uRow = 2; |
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} |
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|
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// Determine if the point is at the left or right of the window.
|
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if (ptMouse.X >= rcWindow.left && ptMouse.X < rcWindow.left + border_thickness.left) |
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{ |
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uCol = 0; // left side
|
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} |
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else if (ptMouse.X < rcWindow.right && ptMouse.X >= rcWindow.right - border_thickness.right) |
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{ |
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uCol = 2; // right side
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} |
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|
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// Hit test (HTTOPLEFT, ... HTBOTTOMRIGHT)
|
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HitTestValues[][] hitTests = new[] |
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{ |
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new []{ HitTestValues.HTTOPLEFT, fOnResizeBorder ? HitTestValues.HTTOP : HitTestValues.HTCAPTION, HitTestValues.HTTOPRIGHT }, |
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new []{ HitTestValues.HTLEFT, HitTestValues.HTNOWHERE, HitTestValues.HTRIGHT }, |
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new []{ HitTestValues.HTBOTTOMLEFT, HitTestValues.HTBOTTOM, HitTestValues.HTBOTTOMRIGHT }, |
|||
}; |
|||
|
|||
return hitTests[uRow][uCol]; |
|||
} |
|||
|
|||
protected virtual IntPtr CustomCaptionProc(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam, ref bool callDwp) |
|||
{ |
|||
IntPtr lRet = IntPtr.Zero; |
|||
|
|||
callDwp = !DwmDefWindowProc(hWnd, msg, wParam, lParam, ref lRet); |
|||
|
|||
switch ((WindowsMessage)msg) |
|||
{ |
|||
case WindowsMessage.WM_NCHITTEST: |
|||
if (lRet == IntPtr.Zero) |
|||
{ |
|||
lRet = (IntPtr)HitTestNCA(hWnd, wParam, lParam); |
|||
|
|||
uint timestamp = unchecked((uint)GetMessageTime()); |
|||
|
|||
if (((HitTestValues)lRet) == HitTestValues.HTCAPTION) |
|||
{ |
|||
var position = PointToClient(PointFromLParam(lParam)); |
|||
|
|||
var visual = (_owner as Window).Renderer.HitTestFirst(position, _owner as Window, x => |
|||
{ |
|||
if (x is IInputElement ie && !ie.IsHitTestVisible) |
|||
{ |
|||
return false; |
|||
} |
|||
|
|||
return true; |
|||
}); |
|||
|
|||
if (visual != null) |
|||
{ |
|||
lRet = (IntPtr)HitTestValues.HTCLIENT; |
|||
} |
|||
} |
|||
|
|||
if (((HitTestValues)lRet) != HitTestValues.HTNOWHERE) |
|||
{ |
|||
callDwp = false; |
|||
} |
|||
} |
|||
break; |
|||
} |
|||
|
|||
return lRet; |
|||
} |
|||
} |
|||
} |
|||
Loading…
Reference in new issue