150 lines
4.8 KiB
C++
150 lines
4.8 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// apps/graphics/twm4nx/include/cbackground.hxx
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// Manage background image
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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_CBACKGROUND_HXX
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#define __APPS_INCLUDE_GRAPHICS_TWM4NX_CBACKGROUND_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 "graphics/nxwidgets/nxconfig.hxx"
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#include "graphics/nxwidgets/cnxwindow.hxx"
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#include "graphics/nxwidgets/cnxserver.hxx"
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#include "graphics/nxwidgets/cwidgeteventhandler.hxx"
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#include "graphics/nxwidgets/cwidgeteventargs.hxx"
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/////////////////////////////////////////////////////////////////////////////
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// Implementation Class Definition
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/////////////////////////////////////////////////////////////////////////////
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namespace NXWidgets
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{
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class CBgWindow; // Forward reference
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class CImage; // Forward reference
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class CWidgetControl; // Forward reference
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struct SRlePaletteBitmap; // Forward reference
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}
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namespace Twm4Nx
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{
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class CTwm4Nx; // Forward reference
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/**
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* Background management
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*/
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class CBackground
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{
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protected:
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FAR CTwm4Nx *m_twm4nx; /**< Cached CTwm4Nx instance */
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FAR NXWidgets::CBgWindow *m_backWindow; /**< The background window */
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FAR NXWidgets::CImage *m_backImage; /**< The background image */
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/**
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* Create the background window.
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*
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* @return true on success
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*/
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bool createBackgroundWindow(void);
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/**
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* Create the background image.
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*
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* @param sbitmap. Identifies the bitmap to paint on background
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* @return true on success
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*/
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bool createBackgroundImage(FAR const struct NXWidgets::SRlePaletteBitmap *sbitmap);
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/**
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* (Re-)draw the background window.
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*
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* @return true on success
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*/
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bool redrawBackgroundWindow(void);
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public:
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/**
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* CBackground Constructor
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*
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* @param twm4nx The Twm4Nx session object
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*/
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CBackground(FAR CTwm4Nx *twm4nx);
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/**
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* CBackground Destructor
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*/
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~CBackground(void);
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/**
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* Get the widget control instance needed to support application drawing
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* into the background.
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*/
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inline FAR NXWidgets::CWidgetControl *getWidgetControl()
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{
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return m_backWindow->getWidgetControl();
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}
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/**
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* Set the background image
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*
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* @param sbitmap. Identifies the bitmap to paint on background
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* @return true on success
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*/
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bool setBackgroundImage(FAR const struct NXWidgets::SRlePaletteBitmap *sbitmap);
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/**
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* Get the size of the physical display device which is equivalent to
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* size of the background window.
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*
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* @return The size of the display
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*/
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void getDisplaySize(FAR struct nxgl_size_s &size);
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};
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}
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#endif // __APPS_INCLUDE_GRAPHICS_TWM4NX_CBACKGROUND_HXX
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