Merge pull request #17 from MichaelTheShifter/shiftui_integration

Shiftui integration

1 files changed, 184 insertions, 0 deletions

diff --git a/source/ShiftUI/Internal/EventHandler.cs b/source/ShiftUI/Internal/EventHandler.cs
new file mode 100644
index 0000000..673e3d0
--- /dev/null
+++ b/source/ShiftUI/Internal/EventHandler.cs
@@ -0,0 +1,184 @@
+// 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 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 delegate int EventDelegate (IntPtr callref, IntPtr eventref, IntPtr user_data);
+
+	internal class EventHandler {
+		internal static EventDelegate EventHandlerDelegate = new EventDelegate (EventCallback);
+		internal static XplatUICarbon Driver;
+
+		internal const int EVENT_NOT_HANDLED = 0;
+		internal const int EVENT_HANDLED = -9874;
+
+		internal const uint kEventClassMouse = 1836021107;
+		internal const uint kEventClassKeyboard = 1801812322;
+		internal const uint kEventClassTextInput = 1952807028;
+		internal const uint kEventClassApplication = 1634758764;
+		internal const uint kEventClassAppleEvent = 1701867619;
+		internal const uint kEventClassMenu = 1835363957;
+		internal const uint kEventClassWindow = 2003398244;
+		internal const uint kEventClassWidget = 1668183148;
+		internal const uint kEventClassCommand = 1668113523;
+		internal const uint kEventClassTablet = 1952607348;
+		internal const uint kEventClassVolume = 1987013664;
+		internal const uint kEventClassAppearance = 1634758765;
+		internal const uint kEventClassService = 1936028278;
+		internal const uint kEventClassToolbar = 1952604530;
+		internal const uint kEventClassToolbarItem = 1952606580;
+		internal const uint kEventClassAccessibility = 1633903461;
+		internal const uint kEventClassHIObject = 1751740258;
+		
+		internal static EventTypeSpec [] HIObjectEvents = new EventTypeSpec [] {
+									new EventTypeSpec (kEventClassHIObject, HIObjectHandler.kEventHIObjectConstruct),
+									new EventTypeSpec (kEventClassHIObject, HIObjectHandler.kEventHIObjectInitialize),
+									new EventTypeSpec (kEventClassHIObject, HIObjectHandler.kEventHIObjectDestruct)
+									};
+		internal static EventTypeSpec [] WidgetEvents = new EventTypeSpec [] {
+									new EventTypeSpec (kEventClassWidget, WidgetHandler.kEventWidgetBoundsChanged), 
+									new EventTypeSpec (kEventClassWidget, WidgetHandler.kEventWidgetDraw),
+									new EventTypeSpec (kEventClassWidget, WidgetHandler.kEventWidgetDragEnter),
+									new EventTypeSpec (kEventClassWidget, WidgetHandler.kEventWidgetDragWithin),
+									new EventTypeSpec (kEventClassWidget, WidgetHandler.kEventWidgetDragLeave),
+									new EventTypeSpec (kEventClassWidget, WidgetHandler.kEventWidgetDragReceive),
+									new EventTypeSpec (kEventClassWidget, WidgetHandler.kEventWidgetGetFocusPart), 
+									new EventTypeSpec (kEventClassWidget, WidgetHandler.kEventWidgetInitialize), 
+									new EventTypeSpec (kEventClassWidget, WidgetHandler.kEventWidgetVisibilityChanged) 
+									};
+
+		internal static EventTypeSpec [] ApplicationEvents = new EventTypeSpec[] {
+									new EventTypeSpec (kEventClassApplication, ApplicationHandler.kEventAppActivated),
+									new EventTypeSpec (kEventClassApplication, ApplicationHandler.kEventAppDeactivated)
+									};
+		
+		private static EventTypeSpec [] WindowEvents = new EventTypeSpec[] {
+									new EventTypeSpec (kEventClassMouse, MouseHandler.kEventMouseMoved),
+									new EventTypeSpec (kEventClassMouse, MouseHandler.kEventMouseDragged),
+									new EventTypeSpec (kEventClassMouse, MouseHandler.kEventMouseDown),
+									new EventTypeSpec (kEventClassMouse, MouseHandler.kEventMouseUp),
+									new EventTypeSpec (kEventClassMouse, MouseHandler.kEventMouseWheelMoved),
+									new EventTypeSpec (kEventClassMouse, MouseHandler.kEventMouseScroll),
+
+									new EventTypeSpec (kEventClassWindow, WindowHandler.kEventWindowDeactivated),
+									new EventTypeSpec (kEventClassWindow, WindowHandler.kEventWindowActivated),
+									new EventTypeSpec (kEventClassWindow, WindowHandler.kEventWindowDeactivated),
+									new EventTypeSpec (kEventClassWindow, WindowHandler.kEventWindowCollapsed),
+									new EventTypeSpec (kEventClassWindow, WindowHandler.kEventWindowCollapsing),
+									new EventTypeSpec (kEventClassWindow, WindowHandler.kEventWindowExpanded),
+									new EventTypeSpec (kEventClassWindow, WindowHandler.kEventWindowExpanding),
+									new EventTypeSpec (kEventClassWindow, WindowHandler.kEventWindowBoundsChanged),
+									new EventTypeSpec (kEventClassWindow, WindowHandler.kEventWindowResizeStarted),
+									new EventTypeSpec (kEventClassWindow, WindowHandler.kEventWindowResizeCompleted),
+									new EventTypeSpec (kEventClassWindow, WindowHandler.kEventWindowClose),
+									new EventTypeSpec (kEventClassWindow, WindowHandler.kEventWindowShown),
+
+									new EventTypeSpec (kEventClassKeyboard, KeyboardHandler.kEventRawKeyModifiersChanged),
+									new EventTypeSpec (kEventClassKeyboard, KeyboardHandler.kEventRawKeyDown),
+									new EventTypeSpec (kEventClassKeyboard, KeyboardHandler.kEventRawKeyRepeat),
+									new EventTypeSpec (kEventClassKeyboard, KeyboardHandler.kEventRawKeyUp),
+									new EventTypeSpec (kEventClassTextInput, KeyboardHandler.kEventTextInputUnicodeForKeyEvent)
+									};
+
+		internal static int EventCallback (IntPtr callref, IntPtr eventref, IntPtr handle) {
+			uint klass = GetEventClass (eventref);
+			uint kind = GetEventKind (eventref);
+			MSG msg = new MSG ();
+			IEventHandler handler = null;
+
+			switch (klass) {
+				case kEventClassHIObject: {
+					handler = (IEventHandler) Driver.HIObjectHandler;
+					break;
+				}
+				case kEventClassKeyboard:
+				case kEventClassTextInput:
+					handler = (IEventHandler) Driver.KeyboardHandler;
+					break;
+				case kEventClassWindow:
+					handler = (IEventHandler) Driver.WindowHandler;
+					break;
+				case kEventClassMouse:
+					handler = (IEventHandler) Driver.MouseHandler;
+					break;
+				case kEventClassWidget:
+					handler = (IEventHandler) Driver.WidgetHandler;
+					break;
+				case kEventClassApplication:
+					handler = (IEventHandler) Driver.ApplicationHandler;
+					break;
+				default:
+					return EVENT_NOT_HANDLED;
+			}
+
+			if (handler.ProcessEvent (callref, eventref, handle, kind, ref msg)) {
+				Driver.EnqueueMessage (msg);
+				return EVENT_HANDLED;
+			}
+			
+			return EVENT_NOT_HANDLED;
+		}
+
+		internal static bool TranslateMessage (ref MSG msg) {
+			bool result = false;
+ 
+			if (!result)
+				result = Driver.KeyboardHandler.TranslateMessage (ref msg);
+			if (!result)
+				result = Driver.MouseHandler.TranslateMessage (ref msg);
+
+ 			return result;
+		}
+
+		internal static void InstallApplicationHandler () {
+			InstallEventHandler (GetApplicationEventTarget (), EventHandlerDelegate, (uint)ApplicationEvents.Length, ApplicationEvents, IntPtr.Zero, IntPtr.Zero);
+		}
+
+		internal static void InstallWidgetHandler (IntPtr Widget) {
+			InstallEventHandler (GetWidgetEventTarget (Widget), EventHandlerDelegate, (uint)WidgetEvents.Length, WidgetEvents, Widget, IntPtr.Zero);
+		}
+		
+		internal static void InstallWindowHandler (IntPtr window) {
+			InstallEventHandler (GetWindowEventTarget (window), EventHandlerDelegate, (uint)WindowEvents.Length, WindowEvents, window, IntPtr.Zero);
+		}
+
+		[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
+		static extern IntPtr GetApplicationEventTarget ();
+		[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
+		internal static extern IntPtr GetWidgetEventTarget (IntPtr Widget);
+		[DllImport("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
+		internal static extern IntPtr GetWindowEventTarget (IntPtr window);
+
+		[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
+		internal static extern uint GetEventClass (IntPtr eventref);
+		[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
+		static extern uint GetEventKind (IntPtr eventref);
+		
+		[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
+		static extern int InstallEventHandler (IntPtr window, EventDelegate event_handler, uint count, EventTypeSpec [] types, IntPtr user_data, IntPtr handlerref);
+	}
+}