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