c5e96122d1
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4718 42af7a65-404d-4744-a932-0658087f49c3
245 lines
7.6 KiB
C++
245 lines
7.6 KiB
C++
/****************************************************************************
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* NxWidgets/nxwm/include/ccalibration.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_CCALIBRATION_HXX
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#define __INCLUDE_CCALIBRATION_HXX
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/nx/nxglib.h>
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#include <fixedmath.h>
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#include "cnxstring.hxx"
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#include "cwidgeteventhandler.hxx"
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#include "cwidgetcontrol.hxx"
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#include "iapplication.hxx"
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#include "cfullscreenwindow.hxx"
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#include "ctouchscreen.hxx"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/**
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* Calibration indices
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*/
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#define CALIB_UPPER_LEFT_INDEX 0
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#define CALIB_UPPER_RIGHT_INDEX 1
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#define CALIB_LOWER_RIGHT_INDEX 2
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#define CALIB_LOWER_LEFT_INDEX 3
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#define CALIB_DATA_POINTS 4
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/****************************************************************************
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* Implementation Classes
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****************************************************************************/
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namespace NxWM
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{
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/**
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* Touchscreen calibration data
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*/
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struct SCalibrationData
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{
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b16_t xSlope; // X conversion: xSlope*(x) + xOffset
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b16_t xOffset;
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b16_t ySlope; // Y conversion: ySlope*(y) + yOffset
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b16_t yOffset;
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};
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/**
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* The CCalibration class provides the the calibration window and obtains
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* callibration data.
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*/
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class CCalibration : public IApplication, private NXWidgets::CWidgetEventHandler
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{
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private:
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/**
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* Identifies the current display state
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*/
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enum ECalibState
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{
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CALIB_NOT_STARTED = 0, /**< Constructed, but not yet started */
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CALIB_UPPER_LEFT, /**< Touch point is in the upper left corner */
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CALIB_UPPER_RIGHT, /**< Touch point is in the upper right corner */
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CALIB_LOWER_RIGHT, /**< Touch point is in the lower left corner */
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CALIB_LOWER_LEFT, /**< Touch point is in the lower right corner */
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CALIB_COMPLETE /**< Calibration is complete */
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};
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/**
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* Characterizes one calibration screen
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*/
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struct SCalibScreenInfo
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{
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struct nxgl_point_s pos; /**< The position of the touch point */
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nxgl_mxpixel_t lineColor; /**< The color of the cross-hair lines */
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nxgl_mxpixel_t circleFillColor; /**< The color of the circle */
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};
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/**
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* CCalibration state data
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*/
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CFullScreenWindow *m_window; /**< The window for the calibration display */
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CTouchscreen *m_touchscreen; /**< The touchscreen device */
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enum ECalibState m_state; /**< Current calibration display state */
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struct SCalibScreenInfo m_screenInfo; /**< Describes the current calibration display */
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struct nxgl_point_s m_touchPos; /**< This is the last touch position */
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bool m_stop; /**< True: We have been asked to stop the calibration */
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bool m_touched; /**< True: The screen is touched */
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sem_t m_waitSem; /**< Supports wait for calibration data */
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struct nxgl_point_s m_calibData[CALIB_DATA_POINTS];
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/**
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* Accept raw touchscreen input.
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*
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* @param sample Touchscreen input sample
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*/
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void touchscreenInput(struct touch_sample_s &sample);
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/**
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* This is the calibration state machine. It is called initially and then
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* as new touchscreen data is received.
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*/
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void stateMachine(void);
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/**
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* Handle a mouse button click event.
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*
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* @param e The event data.
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*/
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void handleClickEvent(const NXWidgets::CWidgetEventArgs &e);
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/**
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* Presents the next calibration screen
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*/
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void showCalibration(void);
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public:
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/**
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* CCalibration Constructor
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*
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* @param window. The window to use for the calibration display
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* @param touchscreen. An instance of the class that wraps the touchscreen device.
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*/
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CCalibration(CFullScreenWindow *window, CTouchscreen *touchscreen);
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/**
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* CCalibration Destructor
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*/
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~CCalibration(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 IApplicationWindow 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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* 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 called 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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* Wait for calibration data to be received.
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*
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* @return True if the calibration data was successfully obtained.
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*/
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bool waitCalibrationData(struct SCalibrationData &data);
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};
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}
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#endif // __INCLUDE_CCALIBRATION_HXX
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