/****************************************************************************
* NxWidgets/nxwm/include/chexcalculator.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.
*
****************************************************************************/
#ifndef __INCLUDE_CHEXCALCULATOR_HXX
#define __INCLUDE_CHEXCALCULATOR_HXX
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <nuttx/nx/nxtk.h>
#include <nuttx/nx/nxconsole.h>
#include "cbuttonarray.hxx"
#include "clabel.hxx"
#include "cnxfont.hxx"
#include "iapplication.hxx"
#include "capplicationwindow.hxx"
#include "ctaskbar.hxx"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
#define NXWM_HEXCALCULATOR_NROWS 6
#define NXWM_HEXCALCULATOR_NCOLUMNS 6
/****************************************************************************
* Implementation Classes
****************************************************************************/
#if defined(__cplusplus)
namespace NxWM
{
/**
* This class implements the NxConsole application.
*/
class CHexCalculator : public IApplication,
private IApplicationCallback,
private NXWidgets::CWidgetEventHandler
{
private:
/**
* The structure defines a pending operation.
*/
struct SPendingOperation
{
int64_t value; /**< Accumulated value */
uint8_t operation; /**< Identifies the operations */
};
/**
* Calculator state data.
*/
/**
* Cached constructor parameters.
*/
CTaskbar *m_taskbar; /**< Reference to the "parent" taskbar */
CApplicationWindow *m_window; /**< Reference to the application window */
/**
* Widgets
*/
NXWidgets::CButtonArray *m_keypad; /**< The calculator keyboard */
NXWidgets::CLabel *m_text; /**< The accumulator text display */
NXWidgets::CNxFont *m_font; /**< The font used in the calculator */
/**
* Calculator geometry. This stuff does not really have to be retained
* in memory. If you are pinched for memory, get rid of these.
*/
struct nxgl_size_s m_windowSize; /**< The size of the calculator window */
struct nxgl_size_s m_keypadSize; /**< The size the calculator keypad */
struct nxgl_size_s m_buttonSize; /**< The size of one calculator button */
struct nxgl_size_s m_textSize; /**< The size of the calculator textbox */
struct nxgl_point_s m_keypadPos; /**< The position the calculator keypad */
struct nxgl_point_s m_textPos; /**< The position of the calculator textbox */
/**
* Calculator computational data. Note: Since we do not support
* parentheses and support only two levels of operator precedence, it is
* not necessary to maintain a stack of operations. Within there
* limitations, there can be at most only one pending low prececence
* operation and one pending high precedence operation. If you want
* to support parentheses or more levels of precedence, they you will
* have to extend the design.
*/
int64_t m_accum; /**< The current accumulated value */
int64_t m_memory; /**< The current value saved in memory */
struct SPendingOperation m_low; /**< Low precedence pending operation */
struct SPendingOperation m_high; /**< Hight precedence pending operation */
bool m_hexMode; /**< True if in hex mode */
bool m_result ; /**< True if the accumulator holds a previoius result */
/**
* Select the geometry of the calculator given the current window size.
* Only called as part of construction.
*/
inline void setGeometry(void);
/**
* Create the calculator keypad. Only start as part of the applicaiton
* start method.
*/
inline bool createCalculator(void);
/**
* Applies labels to the keys.
*/
void labelKeypad(void);
/**
* Evaluate a binary operation.
*
* @param value1. The first value
* @param value2. The second value
*
* @return The result of the operation
*/
int64_t evaluateBinaryOperation(uint8_t operation, int64_t value1, int64_t value2);
/**
* Show the current value of the accumulator.
*/
void updateText(void);
/**
* Called when the window minimize button is pressed.
*/
void minimize(void);
/**
* Called when the window minimize close is pressed.
*/
void close(void);
/**
* Handle a widget action event. For CImage, this is a button pre-
* release event.
*
* @param e The event data.
*/
void handleActionEvent(const NXWidgets::CWidgetEventArgs &e);
public:
/**
* CHexCalculator constructor
*
* @param window. The application window
*
* @param taskbar. A pointer to the parent task bar instance
* @param window. The window to be used by this application.
*/
CHexCalculator(CTaskbar *taskbar, CApplicationWindow *window);
/**
* CHexCalculator destructor
*/
~CHexCalculator(void);
/**
* Each implementation of IApplication must provide a method to recover
* the contained CApplicationWindow instance.
*/
IApplicationWindow *getWindow(void) const;
/**
* Get the icon associated with the application
*
* @return An instance if IBitmap that may be used to rend the
* application's icon. This is an new IBitmap instance that must
* be deleted by the caller when it is no long needed.
*/
NXWidgets::IBitmap *getIcon(void);
/**
* Get the name string associated with the application
*
* @return A copy if CNxString that contains the name of the application.
*/
NXWidgets::CNxString getName(void);
/**
* Start the application (perhaps in the minimized state).
*
* @return True if the application was successfully started.
*/
bool run(void);
/**
* Stop the application.
*/
void stop(void);
/**
* Destroy the application and free all of its resources. This method
* will initiate blocking of messages from the NX server. The server
* will flush the window message queue and reply with the blocked
* message. When the block message is received by CWindowMessenger,
* it will send the destroy message to the start window task which
* will, finally, safely delete the application.
*/
void destroy(void);
/**
* The application window is hidden (either it is minimized or it is
* maximized, but not at the top of the hierarchy
*/
void hide(void);
/**
* Redraw the entire window. The application has been maximized or
* otherwise moved to the top of the hierarchy. This method is call from
* CTaskbar when the application window must be displayed
*/
void redraw(void);
/**
* Report of this is a "normal" window or a full screen window. The
* primary purpose of this method is so that window manager will know
* whether or not it show draw the task bar.
*
* @return True if this is a full screen window.
*/
bool isFullScreen(void) const;
};
class CHexCalculatorFactory : public IApplicationFactory
{
private:
CTaskbar *m_taskbar; /**< The taskbar */
public:
/**
* CHexCalculatorFactory Constructor
*
* @param taskbar. The taskbar instance used to terminate calibration
*/
CHexCalculatorFactory(CTaskbar *taskbar);
/**
* CHexCalculatorFactory Destructor
*/
inline ~CHexCalculatorFactory(void) { }
/**
* Create a new instance of an CHexCalculator (as IApplication).
*/
IApplication *create(void);
/**
* Get the icon associated with the application
*
* @return An instance if IBitmap that may be used to rend the
* application's icon. This is an new IBitmap instance that must
* be deleted by the caller when it is no long needed.
*/
NXWidgets::IBitmap *getIcon(void);
};
}
#endif // __cplusplus
#endif // __INCLUDE_CHEXCALCULATOR_HXX
