// 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 <gnorton@novell.com>
//
//
using System;
using System.Runtime.InteropServices;
namespace System.Windows.Forms.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.Control) != 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 ();
}
}
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