/****************************************************************************
* NxWidgets/libnxwidgets/include/ctextbox.hxx
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX, NxWidgets, nor the names of its contributors
* me be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************
*
* Portions of this package derive from Woopsi (http://woopsi.org/) and
* portions are original efforts. It is difficult to determine at this
* point what parts are original efforts and which parts derive from Woopsi.
* However, in any event, the work of Antony Dzeryn will be acknowledged
* in most NxWidget files. Thanks Antony!
*
* Copyright (c) 2007-2011, Antony Dzeryn
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the names "Woopsi", "Simian Zombie" nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Antony Dzeryn ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Antony Dzeryn BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __INCLUDE_CTEXTBOX_HXX
#define __INCLUDE_CTEXTBOX_HXX
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include <nuttx/nx/nxglib.h>
#include "clabel.hxx"
#include "cnxstring.hxx"
#include "cwidgetstyle.hxx"
#include "cwidgeteventargs.hxx"
#include "itextbox.hxx"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Implementation Classes
****************************************************************************/
#if defined(__cplusplus)
namespace NXWidgets
{
/**
* Forward references.
*/
class CWidgetControl;
class CNxTimer;
class CNxString;
/**
* Single-line textbox widget. Can align text both vertically and
* horizontally in different ways. The widget gains this functionality by
* inheriting from the CLabel class. However, if the amount of text exceeds
* the dimensions of the widget, the widget will ignore its horizontal
* alignment settings and switch to left-aligned instead. This ensures that
* moving the cursor over the text will scroll through it correctly.
*/
class CTextBox : public ITextBox, public CLabel, public CWidgetEventHandler
{
protected:
int m_cursorPos; /**< Position of the cursor within the string. */
uint8_t m_showCursor; /**< Controls cursor visibility. */
bool m_wrapCursor; /**< True wrap cursor at the ends of the text */
/**
* Redraws the widget
*/
inline void onBlur(void);
/**
* Draw the area of this widget that falls within the clipping region.
* Called by the redraw() function to draw all visible regions.
*
* @param port The CGraphicsPort to draw to.
* @see redraw()
*/
virtual void drawContents(CGraphicsPort *port);
/**
* Moves the cursor without redrawing.
*
* @param position New cursor position.
* @return True if the cursor position changed
*/
virtual bool repositionCursor(const int position);
/**
* Move the cursor to the specified coordinates. The coordinates
* are expected to be the result of a click, and therefore in
* world-space rather than widget-space.
*/
void moveCursorToClickLocation(nxgl_coord_t x, nxgl_coord_t y);
/**
* Draw the area of this widget that falls within the clipping region.
* Called by the redraw() function to draw all visible regions.
*
* @param port The CGraphicsPort to draw to.
* @see redraw()
*/
virtual void drawBorder(CGraphicsPort *port);
/**
* Moves the cursor to the clicked coordinates.
*
* @param x The x coordinates of the click.
* @param y The y coordinates of the click.
*/
virtual void onClick(nxgl_coord_t x, nxgl_coord_t y);
/**
* Does nothing.
*
* @param x The x coordinates of the click.
* @param y The y coordinates of the click.
*/
virtual void onDoubleClick(nxgl_coord_t x, nxgl_coord_t y);
/**
* Return true if the cursor is visible
*/
virtual bool isCursorVisible(void) const;
/**
* Get the x coordinate of the cursor in pixels relative
* to the left-hand edge of the client rect.
*
* @return The x coordinate of the cursor in pixels.
*/
virtual const nxgl_coord_t getCursorXPos(void) const;
/**
* Get the width of the cursor in pixels.
*
* @return The width of the cursor in pixels.
*/
virtual nxgl_coord_t getCursorWidth(void) const;
/**
* Calculate the horizontal position of the string based on its length
* and the alignment options. Alignment options are overridden if the
* width of the string exceeds the width of the textbox.
*/
virtual void calculateTextPositionHorizontal(void);
/**
* Copy constructor is protected to prevent usage.
*/
inline CTextBox(const CTextBox& textbox) : CLabel(textbox) { };
public:
/**
* Constructor for a textbox containing a string.
*
* @param pWidgetControl The controlling widget for the window
* @param x The x coordinate of the text box, relative to its parent.
* @param y The y coordinate of the text box, relative to its parent.
* @param width The width of the textbox.
* @param height The height of the textbox.
* @param text Pointer to a string to display in the textbox.
* @param style The style that the button should use. If this is not
* specified, the button will use the global default widget
* style.
*/
CTextBox(CWidgetControl *pWidgetControl, nxgl_coord_t x, nxgl_coord_t y,
nxgl_coord_t width, nxgl_coord_t height, const CNxString &text,
CWidgetStyle *style = (CWidgetStyle *)NULL);
/**
* Sets the cursor display mode.
*
* @param cursorMode Determines cursor display mode
*/
virtual void showCursor(EShowCursor cursorMode);
/**
* Shows the cursor in default mode (only when the TextBox has focus).
*/
virtual inline void showCursor(void)
{
showCursor(SHOW_CURSOR_ONFOCUS);
}
/**
* Hides the cursor.
*/
virtual inline void hideCursor(void)
{
showCursor(SHOW_CURSOR_NEVER);
}
/**
* Enables/disables cursor wrapping
*
* @param wrap True enables cursor wrapping
*/
virtual inline void wrapCursor(bool wrap)
{
m_wrapCursor = wrap;
}
/**
* Set the text displayed in the label.
*
* @param text String to display.
*/
virtual void setText(const CNxString &text);
/**
* Append new text to the end of the current text displayed in the
* label.
*
* @param text String to append.
*/
virtual void appendText(const CNxString &text);
/**
* Remove all characters from the string from the start index onwards.
*
* @param startIndex Index to remove from.
*/
virtual void removeText(const unsigned int startIndex);
/**
* Remove specified number of characters from the string from the
* start index onwards.
*
* @param startIndex Index to remove from.
* @param count Number of characters to remove.
*/
virtual void removeText(const unsigned int startIndex, const unsigned int count);
/**
* Insert text at the specified index.
*
* @param text The text to insert.
* @param index Index at which to insert the text.
*/
virtual void insertText(const CNxString &text, const unsigned int index);
/**
* Insert text at the current cursor position.
*
* @param text The text to insert.
*/
virtual void insertTextAtCursor(const CNxString &text);
/**
* Move the cursor to the text position specified. 0 indicates the
* start of the string. If position is greater than the length of the
* string, the cursor is moved to the end of the string.
*
* @param position The new cursor position.
*/
virtual void moveCursorToPosition(const int position);
/**
* Get the cursor position. This is the index within the string that
* the cursor is currently positioned over.
*
* @return position The cursor position.
*/
virtual inline const int getCursorPosition(void) const
{
return m_cursorPos;
}
/**
* Handle a keyboard press event. Replaces CWidgetEventHandler method.
*
* @param e The event data.
*/
void handleKeyPressEvent(const CWidgetEventArgs &e);
/**
* Handle a cursor control event. Replaces CWidgetEventHandler method.
*
* @param e The event data.
*/
void handleCursorControlEvent(const CWidgetEventArgs &e);
};
}
#endif // __cplusplus
#endif // __INCLUDE_CTEXTBOX_HXX
