f730108adb
apps/graphics/NxWidgets: Fix a possible deadlock condition when waiting for window geometry data that will never come. Fixed by re-requesting geometry data if we don't already have it.
apps/graphics/twm4nx: Add some debug output.
apps/graphics/twm4nx: Rethink how background events are handled.
apps/grephics/twm4nx: Expermimental organization to capture background events.
125 lines
3.9 KiB
C++
125 lines
3.9 KiB
C++
/****************************************************************************
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* apps/include/graphics/nxwidgets/cwindoweventhandler.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 __APPS_INCLUDE_GRAPHICS_NXWIDGETS_CWINDOWEVENTHANDLER_HXX
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#define __APPS_INCLUDE_GRAPHICS_NXWIDGETS_CWINDOWEVENTHANDLER_HXX
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include "graphics/nxwidgets/nxconfig.hxx"
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Implementation Classes
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****************************************************************************/
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#if defined(__cplusplus)
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namespace NXWidgets
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{
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class CNxWidget;
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/**
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* Base CWindowEventHandler class, intended to be subclassed. Any class that
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* needs to listen for window events should inherit from this class.
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*/
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class CWindowEventHandler
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{
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public:
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/**
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* Constructor.
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*/
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inline CWindowEventHandler() { }
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/**
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* Destructor.
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*/
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virtual inline ~CWindowEventHandler() { }
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/**
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* Handle a NX window redraw request event
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*
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* @param nxRect The region in the window to be redrawn
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* @param more More redraw requests will follow
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*/
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virtual void handleRedrawEvent(FAR const nxgl_rect_s *nxRect, bool more)
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{
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}
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/**
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* Handle a NX window position/size change event
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*/
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virtual void handleGeometryEvent(void) { }
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#ifdef CONFIG_NX_XYINPUT
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/**
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* Handle an NX window mouse input event.
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*/
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virtual void handleMouseEvent(void) { }
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#endif
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#ifdef CONFIG_NX_KBD
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/**
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* Handle a NX window keyboard input event.
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*/
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virtual void handleKeyboardEvent(void) { }
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#endif
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/**
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* Handle a NX window blocked event
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*
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* @param arg - User provided argument (see nx_block or nxtk_block)
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*/
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virtual void handleBlockedEvent(FAR void *arg) { }
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};
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}
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#endif // __cplusplus
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#endif // __APPS_INCLUDE_GRAPHICS_NXWIDGETS_CWINDOWEVENTHANDLER_HXX
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