506 lines
10 KiB
C++
506 lines
10 KiB
C++
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//------------------------------------------------------------------------------
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// Copyright (c) 2001-2002, OpenBeOS
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// 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, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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// File Name: CursorManager.cpp
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// Author: DarkWyrm <bpmagic@columbus.rr.com>
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// Description: Handles the system's cursor infrastructure
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//
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//------------------------------------------------------------------------------
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#include "CursorManager.h"
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#include "ServerCursor.h"
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#include <Errors.h>
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//! Initializes the CursorManager
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CursorManager::CursorManager(void)
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{
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_cursorlist=new BList(0);
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_lock=create_sem(1,"cursor_manager_sem");
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// Error code for AddCursor
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_tokenizer.ExcludeValue(B_ERROR);
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// Set system cursors to "unassigned"
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_defaultcsr=NULL;
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_textcsr=NULL;
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_movecsr=NULL;
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_dragcsr=NULL;
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_resizecsr=NULL;
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_resize_nwse_csr=NULL;
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_resize_nesw_csr=NULL;
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_resize_ns_csr=NULL;
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_resize_ew_csr=NULL;
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}
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//! Does all the teardown
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CursorManager::~CursorManager(void)
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{
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ServerCursor *temp;
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for(int32 i=0; i<_cursorlist->CountItems();i++)
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{
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temp=(ServerCursor*)_cursorlist->ItemAt(i);
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if(temp)
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delete temp;
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}
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_cursorlist->MakeEmpty();
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delete _cursorlist;
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delete_sem(_lock);
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// Note that it is not necessary to remove and delete the system
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// cursors. These cursors are kept in the list with a NULL application
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// signature so they cannot be removed very easily except via
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// SetCursor(cursor_which). At shutdown, they are removed with the
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// above loop.
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}
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/*!
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\brief Registers a cursor with the manager.
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\param sc ServerCursor object to register
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\return The token assigned to the cursor or B_ERROR if sc is NULL
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*/
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int32 CursorManager::AddCursor(ServerCursor *sc)
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{
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if(!sc)
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return B_ERROR;
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acquire_sem(_lock);
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_cursorlist->AddItem(sc);
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int32 value=_tokenizer.GetToken();
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sc->_token=value;
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release_sem(_lock);
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return value;
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}
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/*!
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\brief Removes a cursor from the internal list and deletes it
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\param token ID value of the cursor to be deleted
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If the cursor is not found, this call does nothing
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*/
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void CursorManager::DeleteCursor(int32 token)
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{
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acquire_sem(_lock);
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ServerCursor *temp;
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for(int32 i=0; i<_cursorlist->CountItems();i++)
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{
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temp=(ServerCursor*)_cursorlist->ItemAt(i);
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if(temp && temp->_token==token)
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{
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_cursorlist->RemoveItem(i);
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delete temp;
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break;
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}
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}
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release_sem(_lock);
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}
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/*!
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\brief Removes and deletes all of an application's cursors
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\param signature Signature to which the cursors belong
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*/
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void CursorManager::RemoveAppCursors(const char *signature)
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{
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// OPTIMIZATION: For an optimization, it perhaps may be wise down
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// the road to replace the ServerCursor's app signature with a
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// pointer to its application and compare ServerApp pointers instead.
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acquire_sem(_lock);
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ServerCursor *temp;
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for(int32 i=0; i<_cursorlist->CountItems();i++)
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{
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temp=(ServerCursor*)_cursorlist->ItemAt(i);
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if(temp && temp->_app_signature &&
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strcmp(signature, temp->_app_signature)==0)
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{
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_cursorlist->RemoveItem(i);
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delete temp;
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break;
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}
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}
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release_sem(_lock);
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}
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//! Wrapper around the DisplayDriver ShowCursor call
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void CursorManager::ShowCursor(void)
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{
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acquire_sem(_lock);
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// TODO: enable this when Desktop.h is added to server
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// DisplayDriver *driver=GetGfxDriver();
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// driver->ShowCursor();
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release_sem(_lock);
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}
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//! Wrapper around the DisplayDriver HideCursor call
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void CursorManager::HideCursor(void)
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{
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acquire_sem(_lock);
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// TODO: enable this when Desktop.h is added to server
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// DisplayDriver *driver=GetGfxDriver();
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// driver->HideCursor();
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release_sem(_lock);
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}
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//! Wrapper around the DisplayDriver ObscureCursor call
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void CursorManager::ObscureCursor(void)
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{
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acquire_sem(_lock);
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// TODO: enable this when Desktop.h is added to server
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// DisplayDriver *driver=GetGfxDriver();
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// driver->ObscureCursor();
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release_sem(_lock);
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}
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/*!
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\brief Set the screen's cursor
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\param token ID of the screen's new cursor
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*/
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void CursorManager::SetCursor(int32 token)
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{
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acquire_sem(_lock);
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ServerCursor *c=_FindCursor(token);
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if(c)
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{
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// TODO: enable this when Desktop.h is added to server
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// DisplayDriver *driver=GetGfxDriver();
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// driver->SetCursor(c);
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}
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release_sem(_lock);
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}
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void CursorManager::SetCursor(cursor_which which)
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{
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acquire_sem(_lock);
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// TODO: enable this when Desktop.h is added to server
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/* DisplayDriver *driver=GetGfxDriver();
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switch(which)
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{
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case B_CURSOR_DEFAULT:
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{
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driver->SetCursor(_defaultcsr);
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break;
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}
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case B_CURSOR_TEXT:
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{
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driver->SetCursor(_textcsr);
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break;
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}
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case B_CURSOR_MOVE:
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{
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driver->SetCursor(_movecsr);
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break;
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}
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case B_CURSOR_DRAG:
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{
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driver->SetCursor(_dragcsr);
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break;
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}
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case B_CURSOR_RESIZE:
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{
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driver->SetCursor(_resizecsr);
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break;
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}
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case B_CURSOR_RESIZE_NWSE:
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{
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driver->SetCursor(_resize_nwse_csr);
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break;
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}
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case B_CURSOR_RESIZE_NESW:
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{
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driver->SetCursor(_resize_nesw_csr);
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break;
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}
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case B_CURSOR_RESIZE_NS:
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{
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driver->SetCursor(_resize_ns_csr);
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break;
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}
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case B_CURSOR_RESIZE_EW:
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{
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driver->SetCursor(_resize_ew_csr);
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break;
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}
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default:
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break;
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}
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*/
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release_sem(_lock);
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}
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/*!
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\brief Acquire the cursor which is used for a particular system cursor
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\param which Which system cursor to get
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\return Pointer to the particular cursor used or NULL if which is
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invalid or the cursor has not been assigned
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*/
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ServerCursor *CursorManager::GetCursor(cursor_which which)
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{
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ServerCursor *temp=NULL;
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acquire_sem(_lock);
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switch(which)
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{
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case B_CURSOR_DEFAULT:
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{
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temp=_defaultcsr;
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break;
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}
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case B_CURSOR_TEXT:
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{
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temp=_textcsr;
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break;
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}
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case B_CURSOR_MOVE:
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{
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temp=_movecsr;
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break;
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}
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case B_CURSOR_DRAG:
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{
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temp=_dragcsr;
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break;
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}
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case B_CURSOR_RESIZE:
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{
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temp=_resizecsr;
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break;
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}
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case B_CURSOR_RESIZE_NWSE:
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{
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temp=_resize_nwse_csr;
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break;
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}
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case B_CURSOR_RESIZE_NESW:
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{
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temp=_resize_nesw_csr;
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break;
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}
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case B_CURSOR_RESIZE_NS:
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{
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temp=_resize_ns_csr;
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break;
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}
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case B_CURSOR_RESIZE_EW:
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{
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temp=_resize_ew_csr;
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break;
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}
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default:
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break;
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}
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release_sem(_lock);
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return temp;
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}
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/*!
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\brief Gets the current system cursor value
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\return The current cursor value or CURSOR_OTHER if some non-system cursor
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*/
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cursor_which CursorManager::GetCursorWhich(void)
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{
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cursor_which temp;
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acquire_sem(_lock);
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temp=_current_which;
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release_sem(_lock);
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return temp;
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}
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/*!
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\brief Sets the specified system cursor to the a particular cursor
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\param which Which system cursor to change
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\param token The ID of the cursor to become the new one
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A word of warning: once a cursor has been assigned to the system, the
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system will take ownership of the cursor and deleting the cursor
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will have not effect on the system.
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*/
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void CursorManager::ChangeCursor(cursor_which which, int32 token)
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{
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acquire_sem(_lock);
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// Find the cursor, based on the token
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ServerCursor *cursor=_FindCursor(token);
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// Did we find a cursor with this token?
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if(!cursor)
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{
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release_sem(_lock);
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return;
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}
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// Do the assignment
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switch(which)
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{
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case B_CURSOR_DEFAULT:
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{
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if(_defaultcsr)
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delete _defaultcsr;
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_defaultcsr=cursor;
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if(cursor->_app_signature)
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{
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delete cursor->_app_signature;
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cursor->_app_signature=NULL;
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}
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break;
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}
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case B_CURSOR_TEXT:
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{
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if(_textcsr)
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delete _textcsr;
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_textcsr=cursor;
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if(cursor->_app_signature)
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{
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delete cursor->_app_signature;
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cursor->_app_signature=NULL;
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}
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break;
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}
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case B_CURSOR_MOVE:
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{
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if(_movecsr)
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delete _movecsr;
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_movecsr=cursor;
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if(cursor->_app_signature)
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{
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delete cursor->_app_signature;
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cursor->_app_signature=NULL;
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}
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break;
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}
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case B_CURSOR_DRAG:
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{
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if(_dragcsr)
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delete _dragcsr;
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_dragcsr=cursor;
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if(cursor->_app_signature)
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{
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delete cursor->_app_signature;
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cursor->_app_signature=NULL;
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}
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break;
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}
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case B_CURSOR_RESIZE:
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{
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if(_resizecsr)
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delete _resizecsr;
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_resizecsr=cursor;
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||
|
|
if(cursor->_app_signature)
|
||
|
|
{
|
||
|
|
delete cursor->_app_signature;
|
||
|
|
cursor->_app_signature=NULL;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case B_CURSOR_RESIZE_NWSE:
|
||
|
|
{
|
||
|
|
if(_resize_nwse_csr)
|
||
|
|
delete _resize_nwse_csr;
|
||
|
|
|
||
|
|
_resize_nwse_csr=cursor;
|
||
|
|
|
||
|
|
if(cursor->_app_signature)
|
||
|
|
{
|
||
|
|
delete cursor->_app_signature;
|
||
|
|
cursor->_app_signature=NULL;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case B_CURSOR_RESIZE_NESW:
|
||
|
|
{
|
||
|
|
if(_resize_nesw_csr)
|
||
|
|
delete _resize_nesw_csr;
|
||
|
|
|
||
|
|
_resize_nesw_csr=cursor;
|
||
|
|
|
||
|
|
if(cursor->_app_signature)
|
||
|
|
{
|
||
|
|
delete cursor->_app_signature;
|
||
|
|
cursor->_app_signature=NULL;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case B_CURSOR_RESIZE_NS:
|
||
|
|
{
|
||
|
|
if(_resize_ns_csr)
|
||
|
|
delete _resize_ns_csr;
|
||
|
|
|
||
|
|
_resize_ns_csr=cursor;
|
||
|
|
|
||
|
|
if(cursor->_app_signature)
|
||
|
|
{
|
||
|
|
delete cursor->_app_signature;
|
||
|
|
cursor->_app_signature=NULL;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case B_CURSOR_RESIZE_EW:
|
||
|
|
{
|
||
|
|
if(_resize_ew_csr)
|
||
|
|
delete _resize_ew_csr;
|
||
|
|
|
||
|
|
_resize_ew_csr=cursor;
|
||
|
|
|
||
|
|
if(cursor->_app_signature)
|
||
|
|
{
|
||
|
|
delete cursor->_app_signature;
|
||
|
|
cursor->_app_signature=NULL;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
release_sem(_lock);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief Internal function which finds the cursor with a particular ID
|
||
|
|
\param token ID of the cursor to find
|
||
|
|
\return The cursor or NULL if not found
|
||
|
|
*/
|
||
|
|
ServerCursor *CursorManager::_FindCursor(int32 token)
|
||
|
|
{
|
||
|
|
ServerCursor *temp;
|
||
|
|
for(int32 i=0; i<_cursorlist->CountItems();i++)
|
||
|
|
{
|
||
|
|
temp=(ServerCursor*)_cursorlist->ItemAt(i);
|
||
|
|
if(temp && temp->_token==token)
|
||
|
|
return temp;
|
||
|
|
}
|
||
|
|
return NULL;
|
||
|
|
}
|