/**************************************************************************** * NxWidgets/libnxwidgets/include/ctextbox.hxx * * Copyright (C) 2012 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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 #include #include #include #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