418 lines
13 KiB
C++
418 lines
13 KiB
C++
/****************************************************************************
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* apps/include/graphics/nxwidgets/clistbox.hxx
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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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 __APPS_INCLUDE_GRAPHICS_NXWIDGETS_CLISTBOX_HXX
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#define __APPS_INCLUDE_GRAPHICS_NXWIDGETS_CLISTBOX_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 <cstdint>
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#include <cstdbool>
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#include <nuttx/nx/nxglib.h>
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#include "graphics/nxwidgets/nxconfig.hxx"
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#include "graphics/nxwidgets/cscrollingpanel.hxx"
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#include "graphics/nxwidgets/ilistdataeventhandler.hxx"
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#include "graphics/nxwidgets/clistdata.hxx"
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#include "graphics/nxwidgets/clistboxdataitem.hxx"
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#include "graphics/nxwidgets/cwidgetstyle.hxx"
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#include "graphics/nxwidgets/ilistbox.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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* Class providing a scrollable list of options. The CListBox can be set
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* up to only allow one selection or multiple selections. Processes
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* double-clicks and raises double-click events, so that a double-click
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* on an option can be made to automatically select and close a window/etc.
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* The options themselves have user-definable text and background colors
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* for their selected and unselected states.
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*/
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class CListBox : public IListBox, public CScrollingPanel,
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public IListDataEventHandler
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{
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protected:
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CListData m_options; /**< Option storage. */
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uint8_t m_optionPadding; /**< Padding between options. */
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int m_lastSelectedIndex; /**< Index of the last option 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 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 drawBorder(CGraphicsPort *port);
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/**
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* Determines which item was clicked and selects or deselects it as
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* appropriate. Also starts the dragging system.
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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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* Selects the clicked item and deselects all others.
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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 onDoubleClick(nxgl_coord_t x, nxgl_coord_t y);
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/**
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* Select or deselect an option by its index. Does not deselect any other
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* selected options. Set index to -1 to select nothing. Redraws the widget
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* and raises a value changed event.
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*
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* @param index The index of the option to select.
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* @param selected True to select the option, false to deselect it.
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*/
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virtual void setOptionSelected(const int index, const bool selected);
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/**
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* Copy constructor is protected to prevent usage.
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*/
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inline CListBox(const CListBox &listBox) : CScrollingPanel(listBox) { }
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public:
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/**
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* Constructor.
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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 widget.
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* @param y The y coordinate of the widget.
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* @param width The width of the widget.
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* @param height The height of the widget.
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* @param style The style that the widget should use. If this is not
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* specified, the widget will use the values stored in the global
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* g_defaultWidgetStyle object. The widget will copy the properties of
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* the style into its own internal style object.
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*/
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CListBox(CWidgetControl *pWidgetControl,
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nxgl_coord_t x, nxgl_coord_t y,
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nxgl_coord_t width, nxgl_coord_t height,
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CWidgetStyle *style = NULL);
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/**
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* Destructor.
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*/
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virtual ~CListBox(void);
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/**
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* Add a new option to the widget using default colors.
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*
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* @param text Text to show in the option.
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* @param value The value of the option.
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*/
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virtual void addOption(const CNxString &text, const uint32_t value);
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/**
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* Add an option to the widget.
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*
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* @param option The option to add.
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*/
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virtual void addOption(CListBoxDataItem *option);
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/**
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* Remove an option from the widget by its index.
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*
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* @param index The index of the option to remove.
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*/
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virtual void removeOption(const int index);
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/**
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* Remove all options from the widget.
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*/
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virtual void removeAllOptions(void);
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/**
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* Add a new option to the widget.
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*
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* @param text Text to show in the option.
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* @param value The value of the option.
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* @param normalTextColor Color to draw the text with when not selected.
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* @param normalBackColor Color to draw the background with when not selected.
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* @param selectedTextColor Color to draw the text with when selected.
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* @param selectedBackColor Color to draw the background with when selected.
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*/
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virtual void addOption(const CNxString &text, const uint32_t value,
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const nxwidget_pixel_t normalTextColor,
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const nxwidget_pixel_t normalBackColor,
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const nxwidget_pixel_t selectedTextColor,
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const nxwidget_pixel_t selectedBackColor);
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/**
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* Select an option by its index.
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* Redraws the widget and raises a value changed event.
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*
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* @param index The index of the option to select.
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*/
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virtual void selectOption(const int index);
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/**
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* De-select an option by its index.
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* Redraws the widget and raises a value changed event.
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*
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* @param index The index of the option to select.
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*/
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virtual void deselectOption(const int index);
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/**
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* Select all options. Does nothing if the listbox does not allow
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* multiple selections. Redraws the widget and raises a value changed
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* event.
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*/
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virtual void selectAllOptions(void);
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/**
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* Deselect all options.
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* Redraws the widget and raises a value changed event.
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*/
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virtual void deselectAllOptions(void);
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/**
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* Get the selected index. Returns -1 if nothing is selected. If
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* more than one option is selected, the index of the first selected
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* option is returned.
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*
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* @return The selected index.
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*/
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virtual const int getSelectedIndex(void) const;
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/**
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* Sets the selected index. Specify -1 to select nothing. Resets any
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* other selected options to deselected. Redraws the widget and raises
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* a value changed event.
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*
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* @param index The selected index.
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*/
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virtual void setSelectedIndex(const int index);
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/**
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* Get the selected option. Returns NULL if nothing is selected.
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*
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* @return The selected option.
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*/
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virtual const CListBoxDataItem *getSelectedOption(void) const;
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/**
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* Sets whether multiple selections are possible or not.
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*
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* @param allowMultipleSelections True to allow multiple selections.
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*/
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virtual inline void
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setAllowMultipleSelections(const bool allowMultipleSelections)
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{
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m_options.setAllowMultipleSelections(allowMultipleSelections);
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}
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/**
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* Sets whether multiple selections are possible or not.
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*
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* @return True if multiple selections are allowed.
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*/
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virtual inline const bool allowsMultipleSelections(void) const
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{
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return m_options.allowsMultipleSelections();
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}
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/**
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* Resize the scrolling canvas to encompass all options.
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*/
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virtual void resizeCanvas(void);
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/**
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* Get the specified option.
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*
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* @return The specified option.
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*/
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virtual inline const CListBoxDataItem *getOption(const int index)
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{
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return (const CListBoxDataItem *)m_options.getItem(index);
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}
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/**
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* Sort the options alphabetically by the text of the options.
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*/
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virtual void sort(void);
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/**
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* Get the total number of options.
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*
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* @return The number of options.
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*/
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virtual inline const int getOptionCount(void) const
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{
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return m_options.getItemCount();
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}
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/**
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* Get the height of a single option.
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*
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* @return The height of an option.
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*/
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virtual const nxgl_coord_t getOptionHeight(void) const;
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/**
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* Sets whether or not items added to the list are automatically sorted on insert or not.
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*
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* @param sortInsertedItems True to enable sort on insertion.
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*/
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virtual inline void setSortInsertedItems(const bool sortInsertedItems)
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{
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m_options.setSortInsertedItems(sortInsertedItems);
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}
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/**
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* Handles list data changed events.
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*
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* @param e Event arguments.
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*/
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virtual void handleListDataChangedEvent(const CListDataEventArgs &e);
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/**
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* Handles list selection changed events.
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*
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* @param e Event arguments.
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*/
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virtual void handleListDataSelectionChangedEvent(const CListDataEventArgs &e);
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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 widget's
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* parent. Value is based on the length of the largest string in the
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* set of options.
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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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virtual void getPreferredDimensions(CRect &rect) const;
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/**
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* Check if the click is a double-click.
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*
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* @param x X coordinate of the click.
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* @param y Y coordinate of the click.
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* @return True if the click is a double-click.
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*/
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virtual bool isDoubleClick(nxgl_coord_t x, nxgl_coord_t y);
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};
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}
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#endif // __cplusplus
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#endif // __APPS_INCLUDE_GRAPHICS_NXWIDGETS_CLISTBOX_HXX
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