453 lines
15 KiB
C++
453 lines
15 KiB
C++
/****************************************************************************
|
|
* NxWidgets/nxwm/include/ccalibration.hxx
|
|
*
|
|
* Copyright (C) 2012-2013 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 <pthread.h>
|
|
#include <fixedmath.h>
|
|
|
|
#include "cnxstring.hxx"
|
|
#include "cwidgeteventhandler.hxx"
|
|
#include "cwidgetcontrol.hxx"
|
|
#include "clabel.hxx"
|
|
#include "cnxfont.hxx"
|
|
|
|
#include "ctaskbar.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
|
|
*/
|
|
|
|
#ifdef CONFIG_NXWM_CALIBRATION_ANISOTROPIC
|
|
struct SCalibrationLine
|
|
{
|
|
float slope; /**< The slope of a line */
|
|
float offset; /**< The offset of a line */
|
|
};
|
|
|
|
struct SCalibrationData
|
|
{
|
|
struct SCalibrationLine left; /**< Describes Y values along left edge */
|
|
struct SCalibrationLine right; /**< Describes Y values along right edge */
|
|
struct SCalibrationLine top; /**< Describes X values along top */
|
|
struct SCalibrationLine bottom; /**< Describes X values along bottom edge */
|
|
nxgl_coord_t leftX; /**< Left X value used in calibration */
|
|
nxgl_coord_t rightX; /**< Right X value used in calibration */
|
|
nxgl_coord_t topY; /**< Top Y value used in calibration */
|
|
nxgl_coord_t bottomY; /**< Bottom Y value used in calibration */
|
|
};
|
|
|
|
#else
|
|
struct SCalibrationData
|
|
{
|
|
b16_t xSlope; /**< X conversion: xSlope*(x) + xOffset */
|
|
b16_t xOffset;
|
|
b16_t ySlope; /**< Y conversion: ySlope*(y) + yOffset */
|
|
b16_t yOffset;
|
|
};
|
|
|
|
#endif
|
|
|
|
/**
|
|
* The CCalibration class provides the the calibration window and obtains
|
|
* callibration data.
|
|
*/
|
|
|
|
class CCalibration : public IApplication
|
|
{
|
|
private:
|
|
/**
|
|
* The state of the calibration thread.
|
|
*/
|
|
|
|
enum ECalThreadState
|
|
{
|
|
CALTHREAD_NOTRUNNING = 0, /**< The calibration thread has not yet been started */
|
|
CALTHREAD_STARTED, /**< The calibration thread has been started, but is not yet running */
|
|
CALTHREAD_RUNNING, /**< The calibration thread is running normally */
|
|
CALTHREAD_STOPREQUESTED, /**< The calibration thread has been requested to stop */
|
|
CALTHREAD_HIDE, /**< The hide() called by calibration thread running */
|
|
CALTHREAD_SHOW, /**< The redraw() called by calibration thread running */
|
|
CALTHREAD_TERMINATED /**< The calibration thread terminated normally */
|
|
};
|
|
|
|
/**
|
|
* Identifies the current display state
|
|
*/
|
|
|
|
enum ECalibrationPhase
|
|
{
|
|
CALPHASE_NOT_STARTED = 0, /**< Constructed, but not yet started */
|
|
CALPHASE_UPPER_LEFT, /**< Touch point is in the upper left corner */
|
|
CALPHASE_UPPER_RIGHT, /**< Touch point is in the upper right corner */
|
|
CALPHASE_LOWER_RIGHT, /**< Touch point is in the lower left corner */
|
|
CALPHASE_LOWER_LEFT, /**< Touch point is in the lower right corner */
|
|
CALPHASE_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
|
|
*/
|
|
|
|
CTaskbar *m_taskbar; /**< The taskbar (used to terminate calibration) */
|
|
CFullScreenWindow *m_window; /**< The window for the calibration display */
|
|
CTouchscreen *m_touchscreen; /**< The touchscreen device */
|
|
#ifdef CONFIG_NXWM_CALIBRATION_MESSAGES
|
|
NXWidgets::CLabel *m_text; /**< Calibration message */
|
|
NXWidgets::CNxFont *m_font; /**< The font used in the message */
|
|
#endif
|
|
pthread_t m_thread; /**< The calibration thread ID */
|
|
struct SCalibScreenInfo m_screenInfo; /**< Describes the current calibration display */
|
|
struct nxgl_point_s m_touchPos; /**< This is the last touch position */
|
|
volatile uint8_t m_calthread; /**< Current calibration display state (See ECalibThreadState)*/
|
|
uint8_t m_calphase; /**< Current calibration display state (See ECalibrationPhase)*/
|
|
bool m_stop; /**< True: We have been asked to stop the calibration */
|
|
bool m_touched; /**< True: The screen is touched */
|
|
uint8_t m_touchId; /**< The ID of the touch */
|
|
#if CONFIG_NXWM_CALIBRATION_AVERAGE
|
|
uint8_t m_nsamples; /**< Number of samples collected so far at this position */
|
|
struct nxgl_point_s m_sampleData[CONFIG_NXWM_CALIBRATION_NSAMPLES];
|
|
#endif
|
|
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);
|
|
|
|
#ifdef CONFIG_NXWM_CALIBRATION_MESSAGES
|
|
/**
|
|
* Create widgets need by the calibration thread.
|
|
*
|
|
* @return True if the widgets were successfully created.
|
|
*/
|
|
|
|
bool createWidgets(void);
|
|
|
|
/**
|
|
* Destroy widgets created for the calibration thread.
|
|
*/
|
|
|
|
void destroyWidgets(void);
|
|
#endif
|
|
|
|
/**
|
|
* Start the calibration thread.
|
|
*
|
|
* @param initialState. The initial state of the calibration thread
|
|
* @return True if the thread was successfully started.
|
|
*/
|
|
|
|
bool startCalibration(enum ECalThreadState initialState);
|
|
|
|
/**
|
|
* Return true if the calibration thread is running normally. There are
|
|
* lots of potential race conditions. There are also two ambiguous
|
|
* states:
|
|
*
|
|
* 1) The thread may have been started but not yet running
|
|
* (CALTHREAD_STARTED), or the
|
|
* 2) The thread may been requested to terminate, but has not yet
|
|
* terminated (CALTHREAD_STOPREQUESTED)
|
|
*
|
|
* Both of those states will cause isRunning() to return false.
|
|
*
|
|
* @return True if the calibration thread is runnning normally.
|
|
*/
|
|
|
|
inline bool isRunning(void) const
|
|
{
|
|
return (m_calthread == CALTHREAD_RUNNING ||
|
|
m_calthread == CALTHREAD_HIDE ||
|
|
m_calthread == CALTHREAD_SHOW);
|
|
}
|
|
|
|
/**
|
|
* Return true if the calibration thread is has been started and has not
|
|
* yet terminated. There is a potential race condition here when the
|
|
* thread has been requested to terminate, but has not yet terminated
|
|
* (CALTHREAD_STOPREQUESTED). isStarted() will return false in that case.
|
|
*
|
|
* @return True if the calibration thread has been started and/or is
|
|
* running normally.
|
|
*/
|
|
|
|
inline bool isStarted(void) const
|
|
{
|
|
return (m_calthread == CALTHREAD_STARTED ||
|
|
m_calthread == CALTHREAD_RUNNING ||
|
|
m_calthread == CALTHREAD_HIDE ||
|
|
m_calthread == CALTHREAD_SHOW);
|
|
}
|
|
|
|
/**
|
|
* The calibration thread. This is the entry point of a thread that provides the
|
|
* calibration displays, waits for input, and collects calibration data.
|
|
*
|
|
* @param arg. The CCalibration 'this' pointer cast to a void*.
|
|
* @return This function always returns NULL when the thread exits
|
|
*/
|
|
|
|
static FAR void *calibration(FAR void *arg);
|
|
|
|
/**
|
|
* Accumulate and average touch sample data
|
|
*
|
|
* @param average. When the averaged data is available, return it here
|
|
* @return True: Average data is available; False: Need to collect more samples
|
|
*/
|
|
|
|
#if CONFIG_NXWM_CALIBRATION_AVERAGE
|
|
bool averageSamples(struct nxgl_point_s &average);
|
|
#endif
|
|
|
|
/**
|
|
* 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);
|
|
|
|
/**
|
|
* Finish calibration steps and provide the calibration data to the
|
|
* touchscreen driver.
|
|
*/
|
|
|
|
void finishCalibration(void);
|
|
|
|
/**
|
|
* Given the raw touch data collected by the calibration thread, create the
|
|
* massaged calibration data needed by CTouchscreen.
|
|
*
|
|
* @param data. A reference to the location to save the calibration data
|
|
* @return True if the calibration data was successfully created.
|
|
*/
|
|
|
|
bool createCalibrationData(struct SCalibrationData &data);
|
|
|
|
public:
|
|
|
|
/**
|
|
* CCalibration Constructor
|
|
*
|
|
* @param taskbar. The taskbar instance used to terminate calibration
|
|
* @param window. The window to use for the calibration display
|
|
* @param touchscreen. An instance of the class that wraps the
|
|
* touchscreen device.
|
|
*/
|
|
|
|
CCalibration(CTaskbar *taskbar, 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);
|
|
|
|
/**
|
|
* 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 called 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 CCalibrationFactory : public IApplicationFactory
|
|
{
|
|
private:
|
|
CTaskbar *m_taskbar; /**< The taskbar */
|
|
CTouchscreen *m_touchscreen; /**< The touchscreen device */
|
|
|
|
public:
|
|
/**
|
|
* CCalibrationFactory Constructor
|
|
*
|
|
* @param taskbar. The taskbar instance used to terminate calibration
|
|
* @param touchscreen. An instance of the class that wraps the
|
|
* touchscreen device.
|
|
*/
|
|
|
|
CCalibrationFactory(CTaskbar *taskbar, CTouchscreen *touchscreen);
|
|
|
|
/**
|
|
* CCalibrationFactory Destructor
|
|
*/
|
|
|
|
inline ~CCalibrationFactory(void) { }
|
|
|
|
/**
|
|
* Create a new instance of an CCalibration (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 // __INCLUDE_CCALIBRATION_HXX
|