mcs/class/Managed.Windows.Forms/System.Windows.Forms.CarbonInternal/ControlHandler.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2007 Novell, Inc.
  21 //
  22 // Authors:
  23 //      Geoff Norton  <gnorton@novell.com>
  24 //
  25 //
  26
  27 using System;
  28 using System.Drawing;
  29 using System.Runtime.InteropServices;
  30
  31 namespace System.Windows.Forms.CarbonInternal {
  32         internal class ControlHandler : EventHandlerBase, IEventHandler {
  33                 internal const uint kEventControlInitialize = 1000;
  34                 internal const uint kEventControlDispose = 1001;
  35                 internal const uint kEventControlGetOptimalBounds = 1003;
  36                 internal const uint kEventControlDefInitialize = kEventControlInitialize;
  37                 internal const uint kEventControlDefDispose = kEventControlDispose;
  38                 internal const uint kEventControlHit = 1;
  39                 internal const uint kEventControlSimulateHit = 2;
  40                 internal const uint kEventControlHitTest = 3;
  41                 internal const uint kEventControlDraw = 4;
  42                 internal const uint kEventControlApplyBackground = 5;
  43                 internal const uint kEventControlApplyTextColor = 6;
  44                 internal const uint kEventControlSetFocusPart = 7;
  45                 internal const uint kEventControlGetFocusPart = 8;
  46                 internal const uint kEventControlActivate = 9;
  47                 internal const uint kEventControlDeactivate = 10;
  48                 internal const uint kEventControlSetCursor = 11;
  49                 internal const uint kEventControlContextualMenuClick = 12;
  50                 internal const uint kEventControlClick = 13;
  51                 internal const uint kEventControlGetNextFocusCandidate = 14;
  52                 internal const uint kEventControlGetAutoToggleValue = 15;
  53                 internal const uint kEventControlInterceptSubviewClick = 16;
  54                 internal const uint kEventControlGetClickActivation = 17;
  55                 internal const uint kEventControlDragEnter = 18;
  56                 internal const uint kEventControlDragWithin = 19;
  57                 internal const uint kEventControlDragLeave = 20;
  58                 internal const uint kEventControlDragReceive = 21;
  59                 internal const uint kEventControlInvalidateForSizeChange = 22;
  60                 internal const uint kEventControlTrackingAreaEntered = 23;
  61                 internal const uint kEventControlTrackingAreaExited = 24;
  62                 internal const uint kEventControlTrack = 51;
  63                 internal const uint kEventControlGetScrollToHereStartPoint = 52;
  64                 internal const uint kEventControlGetIndicatorDragConstraint = 53;
  65                 internal const uint kEventControlIndicatorMoved = 54;
  66                 internal const uint kEventControlGhostingFinished = 55;
  67                 internal const uint kEventControlGetActionProcPart = 56;
  68                 internal const uint kEventControlGetPartRegion = 101;
  69                 internal const uint kEventControlGetPartBounds = 102;
  70                 internal const uint kEventControlSetData = 103;
  71                 internal const uint kEventControlGetData = 104;
  72                 internal const uint kEventControlGetSizeConstraints= 105;
  73                 internal const uint kEventControlGetFrameMetrics = 106;
  74                 internal const uint kEventControlValueFieldChanged = 151;
  75                 internal const uint kEventControlAddedSubControl = 152;
  76                 internal const uint kEventControlRemovingSubControl = 153;
  77                 internal const uint kEventControlBoundsChanged = 154;
  78                 internal const uint kEventControlVisibilityChanged = 157;
  79                 internal const uint kEventControlTitleChanged = 158;
  80                 internal const uint kEventControlOwningWindowChanged = 159;
  81                 internal const uint kEventControlHiliteChanged = 160;
  82                 internal const uint kEventControlEnabledStateChanged = 161;
  83                 internal const uint kEventControlLayoutInfoChanged = 162;
  84                 internal const uint kEventControlArbitraryMessage = 201;
  85
  86                 internal const uint kEventParamCGContextRef = 1668183160;
  87                 internal const uint kEventParamDirectObject = 757935405;
  88                 internal const uint kEventParamControlPart = 1668313716;
  89                 internal const uint kEventParamControlLikesDrag = 1668047975;
  90                 internal const uint kEventParamRgnHandle = 1919381096;
  91                 internal const uint typeControlRef = 1668575852;
  92                 internal const uint typeCGContextRef = 1668183160;
  93                 internal const uint typeQDPoint = 1363439732;
  94                 internal const uint typeQDRgnHandle = 1919381096;
  95                 internal const uint typeControlPartCode = 1668313716;
  96                 internal const uint typeBoolean = 1651470188;
  97
  98                 internal ControlHandler (XplatUICarbon driver) : base (driver) {}
  99
 100                 public bool ProcessEvent (IntPtr callref, IntPtr eventref, IntPtr handle, uint kind, ref MSG msg) {
 101                         Hwnd hwnd;
 102                         bool client;
 103
 104                         GetEventParameter (eventref, kEventParamDirectObject, typeControlRef, IntPtr.Zero, (uint) Marshal.SizeOf (typeof (IntPtr)), IntPtr.Zero, ref handle);
 105                         hwnd = Hwnd.ObjectFromHandle (handle);
 106
 107                         if (hwnd == null)
 108                                 return false;
 109
 110                         msg.hwnd = hwnd.Handle;
 111                         client = (hwnd.ClientWindow == handle ? true : false);
 112
 113                         switch (kind) {
 114                                 case kEventControlDraw: {
 115                                         IntPtr rgn = IntPtr.Zero;
 116                                         HIRect bounds = new HIRect ();
 117
 118                                         GetEventParameter (eventref, kEventParamRgnHandle, typeQDRgnHandle, IntPtr.Zero, (uint) Marshal.SizeOf (typeof (IntPtr)), IntPtr.Zero, ref rgn);
 119
 120                                         if (rgn != IntPtr.Zero) {
 121                                                 Rect rbounds = new Rect ();
 122
 123                                                 GetRegionBounds (rgn, ref rbounds);
 124
 125                                                 bounds.origin.x = rbounds.left;
 126                                                 bounds.origin.y = rbounds.top;
 127                                                 bounds.size.width = rbounds.right - rbounds.left;
 128                                                 bounds.size.height = rbounds.bottom - rbounds.top;
 129                                         } else {
 130                                                 HIViewGetBounds (handle, ref bounds);
 131                                         }
 132
 133                                         if (!hwnd.visible) {
 134                                                 if (client) {
 135                                                         hwnd.expose_pending = false;
 136                                                 } else {
 137                                                         hwnd.nc_expose_pending = false;
 138                                                 }
 139                                                 return false;
 140                                         }
 141
 142                                         if (!client) {
 143                                                 DrawBorders (hwnd);
 144                                         }
 145
 146                                         Driver.AddExpose (hwnd, client, bounds);
 147
 148                                         return true;
 149                                 }
 150                                 case kEventControlVisibilityChanged: {
 151                                         if (client) {
 152                                                 msg.message = Msg.WM_SHOWWINDOW;
 153                                                 msg.lParam = (IntPtr) 0;
 154                                                 msg.wParam = (HIViewIsVisible (handle) ? (IntPtr)1 : (IntPtr)0);
 155                                                 return true;
 156                                         }
 157                                         return false;
 158                                 }
 159                                 case kEventControlBoundsChanged: {
 160                                         HIRect view_frame = new HIRect ();
 161
 162                                         HIViewGetFrame (handle, ref view_frame);
 163                                         if (!client) {
 164                                                 hwnd.X = (int) view_frame.origin.x;
 165                                                 hwnd.Y = (int) view_frame.origin.y;
 166                                                 hwnd.Width = (int) view_frame.size.width;
 167                                                 hwnd.Height = (int) view_frame.size.height;
 168                                                 Driver.PerformNCCalc (hwnd);
 169                                         }
 170
 171                                         msg.message = Msg.WM_WINDOWPOSCHANGED;
 172                                         msg.hwnd = hwnd.Handle;
 173
 174                                         return true;
 175                                 }
 176                                 case kEventControlGetFocusPart: {
 177                                         short pcode = 0;
 178                                         SetEventParameter (eventref, kEventParamControlPart, typeControlPartCode, (uint)Marshal.SizeOf (typeof (short)), ref pcode);
 179                                         return false;
 180                                 }
 181                                 case kEventControlDragEnter:
 182                                 case kEventControlDragWithin:
 183                                 case kEventControlDragLeave:
 184                                 case kEventControlDragReceive:
 185                                         return Dnd.HandleEvent (callref, eventref, handle, kind, ref msg);
 186                         }
 187                         return false;
 188                 }
 189
 190                 private void DrawBorders (Hwnd hwnd) {
 191                         switch (hwnd.border_style) {
 192                                 case FormBorderStyle.Fixed3D: {
 193                                         Graphics g;
 194
 195                                         g = Graphics.FromHwnd(hwnd.whole_window);
 196                                         if (hwnd.border_static)
 197                                                 ControlPaint.DrawBorder3D(g, new Rectangle(0, 0, hwnd.Width, hwnd.Height), Border3DStyle.SunkenOuter);
 198                                         else
 199                                                 ControlPaint.DrawBorder3D(g, new Rectangle(0, 0, hwnd.Width, hwnd.Height), Border3DStyle.Sunken);
 200                                         g.Dispose();
 201                                         break;
 202                                 }
 203
 204                                 case FormBorderStyle.FixedSingle: {
 205                                         Graphics g;
 206
 207                                         g = Graphics.FromHwnd(hwnd.whole_window);
 208                                         ControlPaint.DrawBorder(g, new Rectangle(0, 0, hwnd.Width, hwnd.Height), Color.Black, ButtonBorderStyle.Solid);
 209                                         g.Dispose();
 210                                         break;
 211                                 }
 212                         }
 213                 }
 214
 215                 [DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
 216                 static extern int GetRegionBounds (IntPtr rgnhandle, ref Rect region);
 217                 [DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
 218                 static extern int GetEventParameter (IntPtr eventref, uint name, uint type, IntPtr outtype, uint size, IntPtr outsize, ref IntPtr data);
 219                 [DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
 220                 static extern int SetEventParameter (IntPtr eventref, uint name, uint type, uint size, ref short data);
 221
 222                 [DllImport("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
 223                 static extern int HIViewGetBounds (IntPtr handle, ref HIRect rect);
 224                 [DllImport("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
 225                 static extern int HIViewGetFrame (IntPtr handle, ref HIRect rect);
 226                 [DllImport("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
 227                 extern static bool HIViewIsVisible (IntPtr vHnd);
 228         }
 229 }