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