472 lines
12 KiB
C++
472 lines
12 KiB
C++
/* -*- Mode: c++; tab-width: 2; indent-tabs-mode: nil; -*- */
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/*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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//
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// nsMacMessagePump
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//
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// This file contains the default implementation for the mac event loop. Events that
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// pertain to the layout engine are routed there via a MessageSink that is passed in
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// at creation time. Events not destined for layout are handled here (such as window
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// moved).
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//
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// Clients may either use this implementation or write their own. Embedding applications
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// will almost certainly write their own because they will want control of the event
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// loop to do other processing. There is nothing in the architecture which forces the
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// embedding app to use anything called a "message pump" so the event loop can actually
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// live anywhere the app wants.
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//
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#include "nsMacMessagePump.h"
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#include "nsMacMessageSink.h"
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#include "nsWidgetsCID.h"
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#include "nsToolkit.h"
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#include "nscore.h"
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#include <MacWindows.h>
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#include <LPeriodical.h>
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#include <ToolUtils.h>
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#include <LowMem.h>
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#define DRAW_ON_RESIZE
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const char SUSPENDRESUMEMESSAGE = 0x01;
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const char MOUSEMOVEDMESSAGE = 0xFA;
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const short kMinWindowWidth = 300;
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const short kMinWindowHeight = 150;
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NS_WIDGET nsMacMessagePump::nsWindowlessMenuEventHandler nsMacMessagePump::gWindowlessMenuEventHandler = nsnull;
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// a small helper routine, inlined for efficiency
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bool IsUserWindow(WindowPtr);
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inline bool IsUserWindow(WindowPtr wp)
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{
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return wp && ((::GetWindowKind(wp) & kRaptorWindowKindBit) != 0);
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}
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//=================================================================
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/* Constructor
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* @update dc 08/31/98
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* @param aToolkit -- The toolkit created by the application
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* @return NONE
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*/
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nsMacMessagePump::nsMacMessagePump(nsToolkit *aToolkit, nsMacMessageSink* aSink)
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: mToolkit(aToolkit), mMessageSink(aSink)
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{
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mRunning = PR_FALSE;
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}
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//=================================================================
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/* Destructor
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* @update dc 08/31/98
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* @param NONE
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* @return NONE
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*/
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nsMacMessagePump::~nsMacMessagePump()
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{
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//¥TODO? release the toolkits and sinks? not if we use COM_auto_ptr.
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}
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//=================================================================
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/* Runs the message pump for the macintosh. Turns them into Raptor events
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* @update dc 08/31/98
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* @param NONE
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* @return A boolean which states how the pump terminated
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*/
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PRBool
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nsMacMessagePump::DoMessagePump()
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{
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Boolean haveEvent;
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EventRecord theEvent;
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long sleep = 0;
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unsigned short eventMask = (everyEvent - diskMask);
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mRunning = PR_TRUE;
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mInBackground = PR_FALSE;
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// calculate the region to watch
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RgnHandle mouseRgn = ::NewRgn();
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::SetRectRgn(mouseRgn, -32000, -32000, -32001, -32001);
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while (mRunning)
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{
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::LMSetSysEvtMask(eventMask); // we need keyUp events
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haveEvent = ::WaitNextEvent(eventMask, &theEvent, sleep, mouseRgn);
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if (haveEvent)
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{
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switch(theEvent.what)
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{
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case keyUp:
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case keyDown:
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case autoKey:
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DoKey(theEvent);
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break;
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case mouseDown:
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DoMouseDown(theEvent);
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break;
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case mouseUp:
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DoMouseUp(theEvent);
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break;
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case updateEvt:
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DoUpdate(theEvent);
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break;
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case activateEvt:
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DoActivate(theEvent);
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break;
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case osEvt:
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unsigned char eventType = ((theEvent.message >> 24) & 0x00ff);
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switch (eventType)
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{
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case SUSPENDRESUMEMESSAGE:
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if (theEvent.message & 0x00000001)
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mInBackground = PR_FALSE; // resume message
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else
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mInBackground = PR_TRUE; // suspend message
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break;
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case MOUSEMOVEDMESSAGE:
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DoMouseMove(theEvent);
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break;
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}
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break;
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}
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}
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else
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{
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DoIdle(theEvent);
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if (mRunning)
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LPeriodical::DevoteTimeToIdlers(theEvent);
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}
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if (mRunning)
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LPeriodical::DevoteTimeToRepeaters(theEvent);
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}
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return NS_OK;
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}
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#pragma mark -
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//-------------------------------------------------------------------------
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//
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// DoUpdate
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//
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//-------------------------------------------------------------------------
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void nsMacMessagePump::DoUpdate(EventRecord &anEvent)
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{
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WindowPtr whichWindow = (WindowPtr)anEvent.message;
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GrafPtr savePort;
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::GetPort(&savePort);
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::SetPort(whichWindow);
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::BeginUpdate(whichWindow);
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// The app can do its own updates here
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DispatchOSEventToRaptor(anEvent, whichWindow);
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::EndUpdate(whichWindow);
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::SetPort(savePort);
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}
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//-------------------------------------------------------------------------
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//
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// DoMouseDown
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//
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//-------------------------------------------------------------------------
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void nsMacMessagePump::DoMouseDown(EventRecord &anEvent)
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{
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WindowPtr whichWindow;
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PRInt16 partCode;
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partCode = ::FindWindow(anEvent.where, &whichWindow);
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switch (partCode)
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{
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case inSysWindow:
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break;
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case inMenuBar:
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{
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long menuResult = ::MenuSelect(anEvent.where);
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if (HiWord(menuResult) != 0)
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DoMenu(anEvent, menuResult);
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break;
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}
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case inContent:
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{
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::SetPort(whichWindow);
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if (IsWindowHilited(whichWindow))
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DispatchOSEventToRaptor(anEvent, whichWindow);
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else
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::SelectWindow(whichWindow);
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break;
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}
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case inDrag:
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{
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::SetPort(whichWindow);
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if (!(anEvent.modifiers & cmdKey))
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::SelectWindow(whichWindow);
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Rect screenRect = (**::GetGrayRgn()).rgnBBox;
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::DragWindow(whichWindow, anEvent.where, &screenRect);
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::GetMouse(&anEvent.where);
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::LocalToGlobal(&anEvent.where);
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// it's not really necessary to send that event to Raptor but (who knows?)
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// some windows may want to know that they have been moved
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DispatchOSEventToRaptor(anEvent, whichWindow);
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break;
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}
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case inGrow:
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{
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::SetPort(whichWindow);
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#ifdef DRAW_ON_RESIZE
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Point oldPt = anEvent.where;
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while (::WaitMouseUp())
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{
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LPeriodical::DevoteTimeToRepeaters(anEvent);
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Point origin = {0,0};
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::LocalToGlobal(&origin);
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Point newPt;
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::GetMouse(&newPt);
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::LocalToGlobal(&newPt);
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if (::DeltaPoint(oldPt, newPt))
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{
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Rect portRect = whichWindow->portRect;
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short width = newPt.h - origin.h;
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short height = newPt.v - origin.v;
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if (width < kMinWindowWidth)
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width = kMinWindowWidth;
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if (height < kMinWindowHeight)
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height = kMinWindowHeight;
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oldPt = newPt;
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::SizeWindow(whichWindow, width, height, true);
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::DrawGrowIcon(whichWindow);
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anEvent.where.h = width; // simulate a click in the grow icon
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anEvent.where.v = height;
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::LocalToGlobal(&anEvent.where);
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DispatchOSEventToRaptor(anEvent, whichWindow);
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Boolean haveEvent;
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EventRecord updateEvent;
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haveEvent = ::WaitNextEvent(updateMask, &updateEvent, 0, nil);
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if (haveEvent)
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DoUpdate(updateEvent);
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}
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}
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#else
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Rect sizeRect = (**::GetGrayRgn()).rgnBBox;
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sizeRect.top = kMinWindowHeight;
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sizeRect.left = kMinWindowWidth;
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long newSize = ::GrowWindow(whichWindow, anEvent.where, &sizeRect);
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if (newSize != 0)
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::SizeWindow(whichWindow, newSize & 0x0FFFF, (newSize >> 16) & 0x0FFFF, true);
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::DrawGrowIcon(whichWindow);
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Point newPt;
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::GetMouse(&newPt);
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::LocalToGlobal(&newPt);
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anEvent.where = newPt; // important!
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DispatchOSEventToRaptor(anEvent, whichWindow);
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#endif
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break;
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}
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case inGoAway:
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{
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::SetPort(whichWindow);
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if (::TrackGoAway(whichWindow, anEvent.where))
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DispatchOSEventToRaptor(anEvent, whichWindow);
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break;
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}
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case inZoomIn:
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case inZoomOut:
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break;
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}
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}
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//-------------------------------------------------------------------------
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//
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// DoMouseUp
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//
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//-------------------------------------------------------------------------
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void nsMacMessagePump::DoMouseUp(EventRecord &anEvent)
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{
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WindowPtr whichWindow;
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PRInt16 partCode;
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partCode = ::FindWindow(anEvent.where, &whichWindow);
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if (whichWindow == nil)
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{
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// We need to report the event even when it happens over no window:
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// when the user clicks a widget, keeps the mouse button pressed and
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// releases it outside the window, the event needs to be reported to
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// the widget so that it can deactivate itself.
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whichWindow = ::FrontWindow();
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}
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DispatchOSEventToRaptor(anEvent, whichWindow);
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}
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//-------------------------------------------------------------------------
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//
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// DoMouseMove
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//
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//-------------------------------------------------------------------------
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void nsMacMessagePump::DoMouseMove(EventRecord &anEvent)
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{
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// same thing as DoMouseUp
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WindowPtr whichWindow;
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PRInt16 partCode;
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partCode = ::FindWindow(anEvent.where, &whichWindow);
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if (whichWindow == nil)
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whichWindow = ::FrontWindow();
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DispatchOSEventToRaptor(anEvent, whichWindow);
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}
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//-------------------------------------------------------------------------
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//
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// DoKey
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//
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// This is called for keydown, keyup, and key repeating events. So we need
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// to be careful not to do things twice.
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//-------------------------------------------------------------------------
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void nsMacMessagePump::DoKey(EventRecord &anEvent)
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{
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char theChar = (char)(anEvent.message & charCodeMask);
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if ((anEvent.what == keyDown) && ((anEvent.modifiers & cmdKey) != 0))
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{
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// do a menu key command
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long menuResult = ::MenuKey(theChar);
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if (HiWord(menuResult) != 0)
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DoMenu(anEvent, menuResult);
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}
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else
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{
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DispatchOSEventToRaptor(anEvent, ::FrontWindow());
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}
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}
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//-------------------------------------------------------------------------
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//
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// DoMenu
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//
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//-------------------------------------------------------------------------
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void nsMacMessagePump::DoMenu(EventRecord &anEvent, long menuResult)
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{
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// The app can handle its menu commands here or
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// in the nsNativeBrowserWindow and nsNativeViewerApp
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if (::FrontWindow() != nil)
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{
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DispatchMenuCommandToRaptor(anEvent, menuResult);
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}
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else
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{
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if (gWindowlessMenuEventHandler != nsnull)
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gWindowlessMenuEventHandler(menuResult);
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}
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HiliteMenu(0);
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}
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//-------------------------------------------------------------------------
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//
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// DoActivate
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//
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//-------------------------------------------------------------------------
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void nsMacMessagePump::DoActivate(EventRecord &anEvent)
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{
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WindowPtr whichWindow = (WindowPtr)anEvent.message;
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::SetPort(whichWindow);
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if (anEvent.modifiers & activeFlag)
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{
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::BringToFront(whichWindow);
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::HiliteWindow(whichWindow,TRUE);
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}
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else
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{
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::HiliteWindow(whichWindow,FALSE);
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}
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DispatchOSEventToRaptor(anEvent, whichWindow);
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}
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//-------------------------------------------------------------------------
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//
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// DoIdle
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//
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//-------------------------------------------------------------------------
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void nsMacMessagePump::DoIdle(EventRecord &anEvent)
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{
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// send mouseMove event
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static Point lastWhere = {0, 0};
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if (*(long*)&lastWhere == *(long*)&anEvent.where)
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return;
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lastWhere = anEvent.where;
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DoMouseMove(anEvent);
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}
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#pragma mark -
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//-------------------------------------------------------------------------
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//
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// DispatchOSEventToRaptor
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//
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//-------------------------------------------------------------------------
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void nsMacMessagePump::DispatchOSEventToRaptor(
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EventRecord &anEvent,
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WindowPtr aWindow)
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{
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if (aWindow && IsUserWindow(aWindow))
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mMessageSink->DispatchOSEvent(anEvent, aWindow);
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}
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//-------------------------------------------------------------------------
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//
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// DispatchMenuCommandToRaptor
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//
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//-------------------------------------------------------------------------
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void nsMacMessagePump::DispatchMenuCommandToRaptor(
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EventRecord &anEvent,
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long menuResult)
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{
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WindowPtr whichWindow = ::FrontWindow();
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if (whichWindow && IsUserWindow(whichWindow))
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mMessageSink->DispatchMenuCommand(anEvent, menuResult);
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}
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