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Diffstat (limited to 'source/ShiftUI/Internal/MouseHandler.cs')
| -rw-r--r-- | source/ShiftUI/Internal/MouseHandler.cs | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/source/ShiftUI/Internal/MouseHandler.cs b/source/ShiftUI/Internal/MouseHandler.cs new file mode 100644 index 0000000..9eb86be --- /dev/null +++ b/source/ShiftUI/Internal/MouseHandler.cs @@ -0,0 +1,228 @@ +// Permission is hereby granted, free of charge, to any person obtaining +// a copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to +// permit persons to whom the Software is furnished to do so, subject to +// the following conditions: +// +// The above copyright notice and this permission notice shall be +// included in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +// +// Copyright (c) 2007 Novell, Inc. +// +// Authors: +// Geoff Norton <[email protected]> +// +// + +using System; +using System.Runtime.InteropServices; + +namespace ShiftUI.CarbonInternal { + internal class MouseHandler : EventHandlerBase, IEventHandler { + internal const uint kEventMouseDown = 1; + internal const uint kEventMouseUp = 2; + internal const uint kEventMouseMoved = 5; + internal const uint kEventMouseDragged = 6; + internal const uint kEventMouseEntered = 8; + internal const uint kEventMouseExited = 9; + internal const uint kEventMouseWheelMoved = 10; + internal const uint kEventMouseScroll = 11; + + internal const uint kEventParamMouseLocation = 1835822947; + internal const uint kEventParamMouseButton = 1835168878; + internal const uint kEventParamMouseWheelAxis = 1836540280; + internal const uint kEventParamMouseWheelDelta = 1836541036; + internal const uint typeLongInteger = 1819242087; + internal const uint typeMouseWheelAxis = 1836540280; + internal const uint typeMouseButton = 1835168878; + internal const uint typeQDPoint = 1363439732; + + internal const uint kEventMouseWheelAxisX = 0; + internal const uint kEventMouseWheelAxisY = 1; + + internal const uint DoubleClickInterval = 7500000; + internal static ClickStruct ClickPending; + + internal MouseHandler (XplatUICarbon driver) : base (driver) {} + + public bool ProcessEvent (IntPtr callref, IntPtr eventref, IntPtr handle, uint kind, ref MSG msg) { + QDPoint qdpoint = new QDPoint (); + CGPoint point = new CGPoint (); + Rect window_bounds = new Rect (); + IntPtr view_handle = IntPtr.Zero; + IntPtr window_handle = IntPtr.Zero; + bool client = true; + ushort button = 0; + Hwnd hwnd; + + GetEventParameter (eventref, kEventParamMouseLocation, typeQDPoint, IntPtr.Zero, (uint)Marshal.SizeOf (typeof (QDPoint)), IntPtr.Zero, ref qdpoint); + GetEventParameter (eventref, kEventParamMouseButton, typeMouseButton, IntPtr.Zero, (uint)Marshal.SizeOf (typeof (ushort)), IntPtr.Zero, ref button); + + if (button == 1 && ((Driver.ModifierKeys & Keys.Widget) != 0)) + button = 2; + + point.x = qdpoint.x; + point.y = qdpoint.y; + + if (FindWindow (qdpoint, ref window_handle) == 5) + return true; + + GetWindowBounds (handle, 33, ref window_bounds); + HIViewFindByID (HIViewGetRoot (handle), new HIViewID (EventHandler.kEventClassWindow, 1), ref window_handle); + + point.x -= window_bounds.left; + point.y -= window_bounds.top; + + HIViewGetSubviewHit (window_handle, ref point, true, ref view_handle); + HIViewConvertPoint (ref point, window_handle, view_handle); + + hwnd = Hwnd.ObjectFromHandle (view_handle); + + if (hwnd != null) + client = (hwnd.ClientWindow == view_handle ? true : false); + + if (XplatUICarbon.Grab.Hwnd != IntPtr.Zero) { + hwnd = Hwnd.ObjectFromHandle (XplatUICarbon.Grab.Hwnd); + client = true; + } + if (hwnd == null) + return true; + + if (client) { + qdpoint.x = (short) point.x; + qdpoint.y = (short) point.y; + + Driver.ScreenToClient (hwnd.Handle, ref qdpoint); + } else { + point.x = qdpoint.x; + point.y = qdpoint.y; + } + + msg.hwnd = hwnd.Handle; + msg.lParam = (IntPtr) ((ushort) point.y << 16 | (ushort) point.x); + + switch (kind) { + case kEventMouseDown: + UpdateMouseState (button, true); + msg.message = (client ? Msg.WM_MOUSEMOVE : Msg.WM_NCMOUSEMOVE) + ((button - 1) * 3) + 1; + msg.wParam = Driver.GetMousewParam (0); + if (ClickPending.Pending && (((DateTime.Now.Ticks - ClickPending.Time) < DoubleClickInterval) && (msg.hwnd == ClickPending.Hwnd) && (msg.wParam == ClickPending.wParam) && (msg.lParam == ClickPending.lParam) && (msg.message == ClickPending.Message))) { + msg.message = (client ? Msg.WM_MOUSEMOVE : Msg.WM_NCMOUSEMOVE) + ((button - 1) * 3) + 3; + ClickPending.Pending = false; + } else { + ClickPending.Pending = true; + ClickPending.Hwnd = msg.hwnd; + ClickPending.Message = msg.message; + ClickPending.wParam = msg.wParam; + ClickPending.lParam = msg.lParam; + ClickPending.Time = DateTime.Now.Ticks; + } + break; + case kEventMouseUp: + UpdateMouseState (button, false); + msg.message = (client ? Msg.WM_MOUSEMOVE : Msg.WM_NCMOUSEMOVE) + ((button - 1) * 3) + 2; + msg.wParam = Driver.GetMousewParam (0); + break; + case kEventMouseDragged: + case kEventMouseMoved: + if (XplatUICarbon.Grab.Hwnd == IntPtr.Zero) { + IntPtr ht = IntPtr.Zero; + if (client) { + ht = (IntPtr) HitTest.HTCLIENT; + NativeWindow.WndProc(msg.hwnd, Msg.WM_SETCURSOR, msg.hwnd, (IntPtr)HitTest.HTCLIENT); + } else { + ht = (IntPtr) NativeWindow.WndProc (hwnd.client_window, Msg.WM_NCHITTEST, IntPtr.Zero, msg.lParam).ToInt32 (); + NativeWindow.WndProc(hwnd.client_window, Msg.WM_SETCURSOR, msg.hwnd, ht); + } + } + msg.message = (client ? Msg.WM_MOUSEMOVE : Msg.WM_NCMOUSEMOVE); + msg.wParam = Driver.GetMousewParam (0); + break; + case kEventMouseWheelMoved: + case kEventMouseScroll: + UInt16 axis = 0; + Int32 delta = 0; + + GetEventParameter (eventref, kEventParamMouseWheelAxis, typeMouseWheelAxis, IntPtr.Zero, (uint)Marshal.SizeOf (typeof (UInt16)), IntPtr.Zero, ref axis); + GetEventParameter (eventref, kEventParamMouseWheelDelta, typeLongInteger, IntPtr.Zero, (uint)Marshal.SizeOf (typeof (Int32)), IntPtr.Zero, ref delta); + + if (axis == kEventMouseWheelAxisY) { + msg.hwnd = XplatUICarbon.FocusWindow; + msg.message = Msg.WM_MOUSEWHEEL; + msg.wParam = Driver.GetMousewParam (delta*40); + return true; + } + break; + default: + return false; + } + Driver.mouse_position.X = (int) point.x; + Driver.mouse_position.Y = (int) point.y; + return true; + } + + internal bool TranslateMessage (ref MSG msg) { + if (msg.message == Msg.WM_MOUSEMOVE || msg.message == Msg.WM_NCMOUSEMOVE) { + Hwnd hwnd = Hwnd.ObjectFromHandle (msg.hwnd); + if (XplatUICarbon.MouseHwnd == null) { + Driver.PostMessage (hwnd.Handle, Msg.WM_MOUSE_ENTER, IntPtr.Zero, IntPtr.Zero); + Cursor.SetCursor (hwnd.Cursor); + } else if (XplatUICarbon.MouseHwnd.Handle != hwnd.Handle) { + Driver.PostMessage (XplatUICarbon.MouseHwnd.Handle, Msg.WM_MOUSELEAVE, IntPtr.Zero, IntPtr.Zero); + Driver.PostMessage (hwnd.Handle, Msg.WM_MOUSE_ENTER, IntPtr.Zero, IntPtr.Zero); + Cursor.SetCursor (hwnd.Cursor); + } + XplatUICarbon.MouseHwnd = hwnd; + } + + return false; + } + + private void UpdateMouseState (int button, bool down) { + switch (button) { + case 1: + if (down) XplatUICarbon.MouseState |= MouseButtons.Left; else XplatUICarbon.MouseState &= ~MouseButtons.Left; + break; + case 2: + if (down) XplatUICarbon.MouseState |= MouseButtons.Right; else XplatUICarbon.MouseState &= ~MouseButtons.Right; + break; + case 3: + if (down) XplatUICarbon.MouseState |= MouseButtons.Middle; else XplatUICarbon.MouseState &= ~MouseButtons.Middle; + break; + } + } + + [DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")] + static extern int GetEventParameter (IntPtr eventref, uint name, uint type, IntPtr outtype, uint size, IntPtr outsize, ref QDPoint data); + [DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")] + static extern int GetEventParameter (IntPtr eventref, uint name, uint type, IntPtr outtype, uint size, IntPtr outsize, ref Int32 data); + [DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")] + static extern int GetEventParameter (IntPtr eventref, uint name, uint type, IntPtr outtype, uint size, IntPtr outsize, ref ushort data); + + [DllImport("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")] + internal static extern short FindWindow (QDPoint point, ref IntPtr handle); + [DllImport("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")] + internal static extern int GetWindowBounds (IntPtr handle, uint region, ref Rect bounds); + [DllImport("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")] + internal static extern int HIViewConvertPoint (ref CGPoint point, IntPtr source_view, IntPtr target_view); + [DllImport("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")] + internal static extern IntPtr HIViewGetRoot (IntPtr handle); + [DllImport("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")] + internal static extern int HIViewGetSubviewHit (IntPtr content_view, ref CGPoint point, bool tval, ref IntPtr hit_view); + [DllImport("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")] + internal static extern int HIViewFindByID (IntPtr root_window, HIViewID id, ref IntPtr view_handle); + + [DllImport("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")] + internal static extern int GetCurrentEventButtonState (); + } +} |