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