242 lines
7.4 KiB
C++
242 lines
7.4 KiB
C++
/****************************************************************************
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* NxWidgets/nxwm/include/iapplication.hxx
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX, NxWidgets, nor the names of its contributors
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* me be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_IAPPLICATION_NXX
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#define __INCLUDE_IAPPLICATION_NXX
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include "cnxstring.hxx"
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#include "ibitmap.hxx"
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Abstract Base Classes
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****************************************************************************/
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#if defined(__cplusplus)
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namespace NxWM
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{
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/**
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* Foward references
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*/
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class IApplicationWindow;
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/**
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* IApplication provides the abstract base class for each NxWM application.
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*/
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class IApplication
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{
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protected:
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/**
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* These values (and the accessors that go with them) violate the "purity"
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* of the base class. These are really part of the task bar implementation:
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* Each application provides this state information needed by the taskbar.
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*/
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bool m_minimized; /**< True if the application is minimized */
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bool m_topapp; /**< True if this application is at the top in the hiearchy */
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public:
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/**
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* A virtual destructor is required in order to override the IApplication
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* destructor. We do this because if we delete IApplication, we want the
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* destructor of the class that inherits from IApplication to run, not this
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* one.
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*/
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virtual ~IApplication(void) { }
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/**
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* Each implementation of IApplication must provide a method to recover
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* the contained CApplicationWindow instance.
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*/
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virtual IApplicationWindow *getWindow(void) const = 0;
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/**
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* Get the icon associated with the application
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*
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* @return An instance if IBitmap that may be used to rend the
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* application's icon. This is an new IBitmap instance that must
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* be deleted by the caller when it is no long needed.
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*/
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virtual NXWidgets::IBitmap *getIcon(void) = 0;
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/**
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* Get the name string associated with the application
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*
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* @return A copy if CNxString that contains the name of the application.
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*/
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virtual NXWidgets::CNxString getName(void) = 0;
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/**
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* Start the application (perhaps in the minimized state).
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*
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* @return True if the application was successfully started.
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*/
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virtual bool run(void) = 0;
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/**
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* Stop the application, put all widgets in a deactivated/disabled state
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* and wait to see what happens next.
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*/
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virtual void stop(void) = 0;
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/**
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* Destroy the application and free all of its resources. This method
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* will initiate blocking of messages from the NX server. The server
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* will flush the window message queue and reply with the blocked
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* message. When the block message is received by CWindowMessenger,
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* it will send the destroy message to the start window task which
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* will, finally, safely delete the application.
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*/
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virtual void destroy(void) = 0;
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/**
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* The application window is hidden (either it is minimized or it is
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* maximized, but not at the top of the hierarchy
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*/
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virtual void hide(void) = 0;
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/**
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* Redraw the entire window. The application has been maximized or
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* otherwise moved to the top of the hierarchy. This method is call from
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* CTaskbar when the application window must be displayed
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*/
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virtual void redraw(void) = 0;
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/**
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* Set the application's minimized state
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*
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* @param minimized. True if the application is minimized
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*/
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inline void setMinimized(bool minimized)
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{
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m_minimized = minimized;
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}
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/**
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* Set the application's top state
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*
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* @param topapp. True if the application is the new top application
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*/
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inline void setTopApplication(bool topapp)
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{
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m_topapp = topapp;
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}
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/**
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* Get the application's minimized state
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*
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* @return True if the application is minimized
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*/
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inline bool isMinimized(void) const
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{
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return m_minimized;
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}
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/**
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* Return true if this is the top application
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*
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* @return True if the application is the new top application
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*/
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inline bool isTopApplication(void) const
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{
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return m_topapp;
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}
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/**
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* Report of this is a "normal" window or a full screen window. The
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* primary purpose of this method is so that window manager will know
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* whether or not it show draw the task bar.
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*
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* @return True if this is a full screen window.
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*/
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virtual bool isFullScreen(void) const = 0;
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};
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/**
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* IApplicationFactory provides a mechanism for creating multiple instances
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* of an application.
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*/
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class IApplicationFactory
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{
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public:
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/**
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* Create a new instance of an application.
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*/
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virtual IApplication *create(void) = 0;
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/**
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* Get the icon associated with the application
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*
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* @return An instance if IBitmap that may be used to rend the
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* application's icon. This is an new IBitmap instance that must
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* be deleted by the caller when it is no long needed.
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*/
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virtual NXWidgets::IBitmap *getIcon(void) = 0;
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};
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}
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#endif // __cplusplus
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#endif // __INCLUDE_IAPPLICATION_NXX
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