eaffa13f54
apps/graphics/twm4nx: Replace most usage of NUL-terminated C strings with NXWidgets::CNxString.
apps/graphics/twm4nx: Add initial support for the main menu. The main menu will come up when a left click is performed on the background. The main menu is used for starting applications. The adds the CMainMenu class that implements the main menu and an IApplication interface class the provides th template for how any external C++ application can add itself to the Main Menu.
Still missing is the logic that responds to the meny item selection and sends the event to the Main Menu as well as the logic in the Main Menu that handles the event and either brings up a sub-menu or starts and application.
Things are still basically functional after these changes, but my gut feeling is these changes added some instabilities that will need to be smoothed out.
88 lines
3.1 KiB
C++
88 lines
3.1 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// apps/graphics/twm4nx/include/ctwmnxevent.hxx
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// Twm4Nx Event handler base class
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//
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// Copyright (C) 2019 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 nor the names of its contributors may be
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// 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 __APPS_INCLUDE_GRAPHICS_TWM4NX_CTWM4NXEVENT_HXX
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#define __APPS_INCLUDE_GRAPHICS_TWM4NX_CTWM4NXEVENT_HXX
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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 <cstdbool>
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/////////////////////////////////////////////////////////////////////////////
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// Implementation Class Definition
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/////////////////////////////////////////////////////////////////////////////
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namespace Twm4Nx
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{
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/**
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* Twm4Nx Event Handler base class
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*/
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class CTwm4NxEvent
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{
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public:
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/**
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* A virtual destructor is required in order to override the INxWindow
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* destructor. We do this because if we delete INxWindow, we want the
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* destructor of the class that inherits from INxWindow to run, not this
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* one.
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*/
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virtual ~CTwm4NxEvent(void)
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{
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}
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/**
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* Handle Twm4Nx events.
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*
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* @param eventmsg. The received NxWidget WINDOW event message.
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* @return True if the message was properly handled. false is
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* return on any failure.
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*/
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virtual bool event(FAR struct SEventMsg *eventmsg)
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{
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return false;
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}
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};
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}
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#endif // __APPS_INCLUDE_GRAPHICS_TWM4NX_CTWM4NXEVENT_HXX
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