318 lines
10 KiB
C++
318 lines
10 KiB
C++
/****************************************************************************
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* NxWidgets/libnxwidgets/include/cbuttonarray.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 __INCLUDE_CBUTTONARRAY_HXX
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#define __INCLUDE_CBUTTONARRAY_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 "clabel.hxx"
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#include "cwidgetstyle.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 CNxString;
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/**
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* Manages a two-dimensional array of buttons as one widget. A two-
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* dimensional array of buttons might also be called a "keyboard".
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*/
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class CButtonArray : public CNxWidget
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{
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protected:
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uint8_t m_buttonColumns; /**< The number of columns in one row */
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uint8_t m_buttonRows; /**< The number buttons in one column */
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bool m_redrawButton; /**< True: Redraw button; False: redraw all */
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bool m_cursorOn; /**< Cursor on; highlighted button displayed */
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bool m_cursorChange; /**< True: Redraw cursor button only */
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nxgl_coord_t m_buttonWidth; /**< The width of one button in pixels */
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nxgl_coord_t m_buttonHeight; /**< The height of one button in rows */
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nxgl_coord_t m_clickX; /**< The X position of the last clicked button */
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nxgl_coord_t m_clickY; /**< The Y position of the last clicked button */
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uint8_t m_cursorColumn; /**< The column index of the highlighted button */
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uint8_t m_cursorRow; /**< The row index of the highlighted button */
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CNxString *m_buttonText; /**< Text for each button */
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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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* Redraw only one button
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*
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* @param port The CGraphicsPort to draw to.
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* @param column The button column index
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* @param row The button row index
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* @param useClicked Draw the button using the 'clicked' button style,
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* regardless of the actual button state.
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* @see onClick() and onRelease()
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*/
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virtual void drawButton(CGraphicsPort *port, int column, int row, bool useClicked);
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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 event and redraws the button.
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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 button.
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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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* Convert an X/Y position to a button column/row index
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*
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* @param x The x position
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* @param y The y position
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* @param column The location to return the column index of the button
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* of interest
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* @param row The location to return the row index of the button of
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* interest
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* @return false is the position is invalid
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*/
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virtual bool posToButton(nxgl_coord_t x, nxgl_coord_t y, int &column, int &row);
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/**
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* Updates the GUI after the text has changed.
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*/
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virtual void onTextChange(void);
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/**
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* Copy constructor is protected to prevent usage.
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*/
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inline CButtonArray(const CButtonArray &button) : CNxWidget(button) { }
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public:
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/**
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* Constructor for an array of buttons.
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*
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* @param pWidgetControl The widget control for the display.
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* @param x The x coordinate of the button array, relative to its parent.
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* @param y The y coordinate of the button array, relative to its parent.
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* @param buttonColumns The number of buttons in one row of the button array
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* @param buttonRows The number of buttons in one column of the button array
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* @param buttonWidth The width of one button
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* @param buttonHeight The height of one button
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* @param style The style that the button 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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CButtonArray(CWidgetControl *pWidgetControl,
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nxgl_coord_t x, nxgl_coord_t y,
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uint8_t buttonColumns, uint8_t buttonRows,
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nxgl_coord_t buttonWidth, nxgl_coord_t buttonHeight,
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CWidgetStyle *style = (CWidgetStyle *)NULL);
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/**
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* CButtonArray Destructor.
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*/
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~CButtonArray(void);
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/**
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* Returns the string shown in the label.
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*
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* @param column The column index of the button of interest
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* @param row The row index of the button of interest
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* @return The label's text.
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*/
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virtual const CNxString &getText(int column, int row) const;
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/**
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* Set the text displayed in the label.
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*
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* @param column The column index of the button to set
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* @param row The row index of the button to set
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* @param text String to display.
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*/
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virtual void setText(int column, int row, const CNxString &text);
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/**
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* Return the position of the last clicked button (0,0 will be returned
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* the no button has every been clicked). The button at this position
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* is currently clicked then, in addition, return true.
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*
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* @param column The location to return the column index of the button
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* of interest
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* @param row The location to return the row index of the button of
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* interest
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* @return True if any button in the array is clicked
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*/
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virtual bool isButtonClicked(int &column, int &row) const;
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/**
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* Check if this specific button in the array is clicked
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*
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* @param column The column of the button to check.
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* @param row The row of the button to check.
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* @return True if this button is clicked
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*/
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virtual bool isThisButtonClicked(int column, int row) const;
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/**
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* Control the cursor state.
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*
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* @param cursorOn True(1), the current cursor position will be highlighted
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*/
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virtual void cursor(bool cursorOn);
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/**
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* Return the current cursor position (button indices) and an indication
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* if the button at the cursor is currently hightlighted.
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*
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* @param column The location to return the column index of the button
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* of interest
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* @param row The location to return the row index of the button of
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* interest
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* @return True if the cursor is enabled and the button is highlighted
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*/
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virtual bool getCursorPosition(int &column, int &row) const;
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/**
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* Set the cursor position (button indices). Note that the cursor
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* does not have to be enabled to set the position.
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*
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* @param column The column index of the button of interest
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* @param row The row index of the button of interest
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* @return True if the cursor position is valid
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*/
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virtual bool setCursorPosition(int column, int row);
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/**
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* Check if this specific button in the array is at the cursor position
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* and highlighted.
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*
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* @param column The column of the button to check.
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* @param row The row of the button to check.
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* @return True if this button is at the cursor postion and highlighted.
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*/
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virtual bool isCursorPosition(int column, int row) const;
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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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virtual void getPreferredDimensions(CRect &rect) const;
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/**
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* Sets the font.
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*
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* @param font A pointer to the font to use.
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*/
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virtual void setFont(CNxFont *font);
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};
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}
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#endif // __cplusplus
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#endif // __INCLUDE_CBUTTONARRAY_HXX
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