347 lines
11 KiB
C++
347 lines
11 KiB
C++
/****************************************************************************
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* NxWidgets/libnxwidgets/include/cimage.hxx
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*
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* Copyright (C) 2012-2014 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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*
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* Portions of this package derive from Woopsi (http://woopsi.org/) and
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* portions are original efforts. It is difficult to determine at this
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* point what parts are original efforts and which parts derive from Woopsi.
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* However, in any event, the work of Antony Dzeryn will be acknowledged
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* in all NxWidget files. Thanks Antony!
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*
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* Copyright (c) 2007-2011, Antony Dzeryn
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* All rights reserved.
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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 are met:
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*
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* * 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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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the names "Woopsi", "Simian Zombie" nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Antony Dzeryn ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL Antony Dzeryn BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_CIMAGE_HXX
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#define __INCLUDE_CIMAGE_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 <stdint.h>
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#include <stdbool.h>
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#include <nuttx/nx/nxglib.h>
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#include "cnxwidget.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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/**
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* Forward references
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*/
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class CWidgetControl;
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class IBitmap;
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/**
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* Simple image widget for present static images in the widget framework.
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*/
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class CImage : public CNxWidget
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{
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protected:
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FAR IBitmap *m_bitmap; /**< Source bitmap image */
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struct nxgl_point_s m_origin; /**< Origin for offset image display position */
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bool m_highlighted; /**< Image is highlighted */
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/**
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* Draw the area of this widget that falls within the clipping region.
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* Called by the drawContents(port) and by classes that inherit from
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* CImage.
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*
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* @param port The CGraphicsPort to draw to.
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* @see redraw()
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*/
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void drawContents(CGraphicsPort *port, bool selected);
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/**
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* Draw the area of this widget that falls within the clipping region.
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* Called by the redraw() function to draw all visible regions.
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*
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* @param port The CGraphicsPort to draw to.
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* @see redraw()
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*/
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virtual void drawContents(CGraphicsPort *port);
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/**
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* Draw the border of this widget. Called by the indirectly via
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* drawBoard(port) and also by classes that inherit from CImage.
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*
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* @param port The CGraphicsPort to draw to.
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* @see redraw()
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*/
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void drawBorder(CGraphicsPort *port, bool selected);
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/**
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* Draw the border of this widget. Called by the redraw() function to draw
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* all visible regions.
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*
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* @param port The CGraphicsPort to draw to.
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* @see redraw()
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*/
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virtual void drawBorder(CGraphicsPort *port);
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/**
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* Redraws the button.
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*
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* @param x The x coordinate of the click.
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* @param y The y coordinate of the click.
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*/
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virtual void onClick(nxgl_coord_t x, nxgl_coord_t y);
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/**
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* Raises an action.
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*
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* @param x The x coordinate of the mouse.
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* @param y The y coordinate of the mouse.
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*/
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virtual void onPreRelease(nxgl_coord_t x, nxgl_coord_t y);
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/**
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* Redraws the image.
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*
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* @param x The x coordinate of the mouse.
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* @param y The y coordinate of the mouse.
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*/
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virtual void onRelease(nxgl_coord_t x, nxgl_coord_t y);
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/**
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* Redraws the image.
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*
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* @param x The x coordinate of the mouse.
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* @param y The y coordinate of the mouse.
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*/
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virtual void onReleaseOutside(nxgl_coord_t x, nxgl_coord_t y);
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/**
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* Copy constructor is protected to prevent usage.
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*/
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inline CImage(const CImage &label) : CNxWidget(label) { };
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public:
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/**
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* Constructor for an image.
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*
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* @param pWidgetControl The controlling widget for the display
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* @param x The x coordinate of the image box, relative to its parent.
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* @param y The y coordinate of the image box, relative to its parent.
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* @param width The width of the textbox.
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* @param height The height of the textbox.
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* @param bitmap The source bitmap image.
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* @param style The style that the widget should use. If this is not
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* specified, the button will use the global default widget
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* style.
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*/
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CImage(CWidgetControl *pWidgetControl, nxgl_coord_t x, nxgl_coord_t y,
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nxgl_coord_t width, nxgl_coord_t height, FAR IBitmap *bitmap,
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CWidgetStyle *style = (CWidgetStyle *)NULL);
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/**
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* Destructor.
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*
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* NOTE: That the contained bitmap image is not destroyed when the image
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* container is destroyed.
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*/
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virtual inline ~CImage() { }
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/**
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* Get pointer to the bitmap that this image contains.
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*/
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inline FAR IBitmap *getBitmap() const { return m_bitmap; }
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/**
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* Set the bitmap that this image contains.
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*/
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inline void setBitmap(FAR IBitmap *bitmap) { m_bitmap = bitmap; }
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/**
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* Insert the dimensions that this widget wants to have into the rect
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* passed in as a parameter. All coordinates are relative to the
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* widget's parent.
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*
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* @param rect Reference to a rect to populate with data.
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*/
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void getPreferredDimensions(CRect &rect) const;
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/**
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* Set the horizontal position of the bitmap. Zero is the left edge
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* of the bitmap and values >0 will move the bit map to the right.
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* This method is useful for horizontal scrolling a large bitmap
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* within a smaller window
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*/
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void setImageLeft(nxgl_coord_t column);
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/**
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* Align the image at the left of the widget region.
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*
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* NOTE: The CImage widget does not support any persistent alignment
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* attribute (at least not at the moment). As a result, this alignment
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* can be lost if the image is changed or if the widget is resized.
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*/
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inline void alignHorizontalLeft(void)
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{
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setImageLeft(0);
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}
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/**
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* Align the image at the left of the widget region.
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*
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* NOTE: The CImage widget does not support any persistent alignment
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* attribute (at least not at the moment). As a result, this alignment
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* can be lost if the image is changed or if the widget is resized.
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*/
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void alignHorizontalCenter(void);
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/**
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* Align the image at the left of the widget region.
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*
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* NOTE: The CImage widget does not support any persistent alignment
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* attribute (at least not at the moment). As a result, this alignment
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* can be lost if the image is changed or if the widget is resized.
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*/
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void alignHorizontalRight(void);
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/**
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* Set the vertical position of the bitmap. Zero is the top edge
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* of the bitmap and values >0 will move the bit map down.
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* This method is useful for vertical scrolling a large bitmap
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* within a smaller window
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*/
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void setImageTop(nxgl_coord_t row);
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/**
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* Align the image at the top of the widget region.
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*
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* NOTE: The CImage widget does not support any persistent alignment
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* attribute (at least not at the moment). As a result, this alignment
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* can be lost if the image is changed or if the widget is resized.
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*/
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inline void alignVerticalTop(void)
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{
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setImageTop(0);
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}
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/**
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* Align the image at the middle of the widget region.
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*
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* NOTE: The CImage widget does not support any persistent alignment
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* attribute (at least not at the moment). As a result, this alignment
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* can be lost if the image is changed or if the widget is resized.
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*/
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void alignVerticalCenter(void);
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/**
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* Align the image at the left of the widget region.
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*
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* NOTE: The CImage widget does not support any persistent alignment
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* attribute (at least not at the moment). As a result, this alignment
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* can be lost if the image is changed or if the widget is resized.
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*/
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void alignVerticalBottom(void);
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/**
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* Control the highlight state.
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*
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* @param highlightOn True(1), the image will be highlighted
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*/
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void highlight(bool highlightOn);
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};
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}
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#endif // __cplusplus
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#endif // __INCLUDE_CIMAGE_HXX
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