324155cd1e
Gregory Nutt is has submitted the SGA Uros Platise has submitted the ICLA Ken Pettit has submitted the ICLA Sebastien Lorquet has submitted the ICLA Pierre-Noel Bouteville has submitted the ICLA as a result we can migrate the licenses to Apache. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
417 lines
14 KiB
C++
417 lines
14 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// apps/include/graphics/twm4nx/apps/ccalibration.hxx
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//
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// Licensed to the Apache Software Foundation (ASF) under one or more
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// contributor license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright ownership. The
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// ASF licenses this file to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance with the
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// License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations
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// under the License.
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//
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/////////////////////////////////////////////////////////////////////////////
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#ifndef __APPS_INCLUDE_GRAPHICS_TWM4NX_APPS_CCALIBRATION_HXX
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#define __APPS_INCLUDE_GRAPHICS_TWM4NX_APPS_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 <pthread.h>
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#include <semaphore.h>
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#include <fixedmath.h>
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#include "graphics/nxwidgets/cnxstring.hxx"
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#include "graphics/nxwidgets/cwidgeteventhandler.hxx"
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#include "graphics/nxwidgets/cwidgetcontrol.hxx"
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#include "graphics/nxwidgets/clabel.hxx"
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#include "graphics/nxwidgets/cnxfont.hxx"
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#include "graphics/twm4nx/ctwm4nx.hxx"
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#include "graphics/twm4nx/ctwm4nxevent.hxx"
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#include "graphics/twm4nx/twm4nx_events.hxx"
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#include "graphics/twm4nx/iapplication.hxx"
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#include "graphics/twm4nx/cinput.hxx"
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/////////////////////////////////////////////////////////////////////////////
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// Pre-processor Definitions
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/////////////////////////////////////////////////////////////////////////////
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// CNxTerm application events
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// Window Events
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#define EVENT_CALIB_REDRAW EVENT_SYSTEM_NOP
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#define EVENT_CALIB_RESIZE EVENT_SYSTEM_NOP
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#define EVENT_CALIB_XYINPUT (EVENT_RECIPIENT_APP | 0x0000)
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#define EVENT_CALIB_KBDINPUT EVENT_SYSTEM_NOP
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#define EVENT_CALIB_DELETE (EVENT_RECIPIENT_APP | 0x0001)
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// Button events (there are no buttons)
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#define EVENT_CALIB_CLOSE EVENT_SYSTEM_NOP
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// Menu Events
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#define EVENT_CALIB_START (EVENT_RECIPIENT_APP | 0x0002)
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// Calibration indices
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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 Twm4Nx
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{
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class CTwm4Nx; // Forward reference
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/**
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* The CCalibration class provides the the calibration window and obtains
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* calibration data.
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*/
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class CCalibration : public CTwm4NxEvent
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{
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private:
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// The state of the calibration thread.
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enum ECalThreadState
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{
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CALTHREAD_NOTRUNNING = 0, /**< The calibration thread has not yet been started */
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CALTHREAD_STARTED, /**< The calibration thread has been started, but is not yet running */
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CALTHREAD_RUNNING, /**< The calibration thread is running normally */
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CALTHREAD_STOPREQUESTED, /**< The calibration thread has been requested to stop */
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CALTHREAD_TERMINATED /**< The calibration thread terminated normally */
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};
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// Identifies the current display state
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enum ECalibrationPhase
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{
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CALPHASE_NOT_STARTED = 0, /**< Constructed, but not yet started */
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CALPHASE_UPPER_LEFT, /**< Touch point is in the upper left corner */
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CALPHASE_UPPER_RIGHT, /**< Touch point is in the upper right corner */
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CALPHASE_LOWER_RIGHT, /**< Touch point is in the lower left corner */
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CALPHASE_LOWER_LEFT, /**< Touch point is in the lower right corner */
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CALPHASE_COMPLETE /**< Calibration is complete */
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};
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// Describes one touchscreen sample. CInput treats mouse and touchscreen
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// input the same so this reflects the mousey nature of the object.
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struct STouchSample
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{
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bool valid; /**< True: Sample is valid */
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uint8_t buttons; /**< Left button reflects touch state */
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struct nxgl_point_s pos; /**< True: Touch position */
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};
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// Characterizes one calibration screen
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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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// CCalibration state data
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FAR CTwm4Nx *m_twm4nx; /**< Twm4Nx session instance */
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FAR NXWidgets::CNxWindow *m_nxWin; /**< The window for the calibration display */
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#ifdef CONFIG_TWM4NX_CALIBRATION_MESSAGES
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FAR NXWidgets::CLabel *m_text; /**< Calibration message */
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FAR NXWidgets::CNxFont *m_font; /**< The font used in the message */
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#endif
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pthread_t m_thread; /**< The calibration thread ID */
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sem_t m_synchSem; /**< Synchronize calibration thread with events */
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sem_t m_exclSem; /**< For mutually exclusive access to data */
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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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volatile uint8_t m_calthread; /**< Current calibration display state (See ECalibThreadState)*/
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uint8_t m_calphase; /**< Current calibration display state (See ECalibrationPhase)*/
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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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struct STouchSample m_sample; /**< Catches new touch samples */
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#ifdef CONFIG_TWM4NX_CALIBRATION_AVERAGE
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uint8_t m_nsamples; /**< Number of samples collected so far at this position */
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struct nxgl_point_s m_sampleData[CONFIG_TWM4NX_CALIBRATION_NSAMPLES];
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#endif
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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 STouchSample &sample);
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#ifdef CONFIG_TWM4NX_CALIBRATION_MESSAGES
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/**
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* Create widgets need by the calibration thread.
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*
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* @return True if the widgets were successfully created.
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*/
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bool createWidgets(void);
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/**
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* Destroy widgets created for the calibration thread.
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*/
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void destroyWidgets(void);
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#endif
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/**
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* The calibration thread. This is the entry point of a thread that provides the
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* calibration displays, waits for input, and collects calibration data.
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*
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* @param arg. The CCalibration 'this' pointer cast to a void*.
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* @return This function always returns NULL when the thread exits
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*/
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static FAR void *calibration(FAR void *arg);
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/**
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* Get exclusive access data shared across threads.
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*
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* @return True is returned if the sample data was obtained without error.
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*/
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bool exclusiveAccess(void);
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/**
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* Wait for touchscreen next sample data to become available.
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*
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* @param sample Snapshot of last touchscreen sample
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* @return True is returned if the sample data was obtained without error.
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*/
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bool waitTouchSample(FAR struct STouchSample &sample);
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#ifdef CONFIG_TWM4NX_CALIBRATION_AVERAGE
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/**
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* Accumulate and average touch sample data
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*
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* @param average. When the averaged data is available, return it here
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* @return True: Average data is available; False: Need to collect more samples
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*/
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bool averageSamples(struct nxgl_point_s &average);
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#endif
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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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* Presents the next calibration screen
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*/
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void showCalibration(void);
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/**
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* Finish calibration steps and provide the calibration data to the
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* touchscreen driver.
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*/
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void finishCalibration(void);
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/**
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* Stop the calibration thread.
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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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* Given the raw touch data collected by the calibration thread, create the
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* massaged calibration data needed by CTouchscreen.
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*
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* @param data. A reference to the location to save the calibration data
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* @return True if the calibration data was successfully created.
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*/
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bool createCalibrationData(struct SCalibrationData &data);
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public:
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/**
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* CCalibration Constructor
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*
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* @param twm4nx. The Twm4Nx session instance.
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*/
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CCalibration(FAR CTwm4Nx *twm4nx);
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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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* CCalibration Initializer. Performs parts of the instance
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* construction that may fail. This function creates the
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* initial calibration display.
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*/
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bool initialize(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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* Handle CCalibration events. This overrides a method from
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* CTwm4NXEvent.
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*
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* @param eventmsg. The received NxWidget WINDOW event message.
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* @return True if the message was properly handled. false is
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* return on any failure.
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*/
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bool event(FAR struct SEventMsg *eventmsg);
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};
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class CCalibrationFactory : public IApplication,
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public IApplicationFactory,
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public CTwm4NxEvent
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{
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private:
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FAR CTwm4Nx *m_twm4nx; /**< Twm4Nx session instance */
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/**
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* Handle CCalibrationFactory events. This overrides a method from
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* CTwm4NXEvent
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*
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* @param eventmsg. The received NxWidget WINDOW event message.
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* @return True if the message was properly handled. false is
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* return on any failure.
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*/
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bool event(FAR struct SEventMsg *eventmsg);
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/**
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* Create and start a new instance of an CNxTerm.
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*/
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bool startFunction(void);
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/**
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* Return the Main Menu item string. This overrides the method from
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* IApplication
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*
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* @param name The name of the application.
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*/
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inline NXWidgets::CNxString getName(void)
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{
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return NXWidgets::CNxString("Calibration");
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}
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/**
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* There is no sub-menu for this Main Menu item. This overrides
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* the method from IApplication.
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*
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* @return This implementation will always return a null value.
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*/
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inline FAR CMenus *getSubMenu(void)
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{
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return (FAR CMenus *)0;
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}
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/**
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* There is no custom event handler. We use the common event handler.
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*
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* @return. null is always returned in this implementation.
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*/
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inline FAR CTwm4NxEvent *getEventHandler(void)
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{
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return (FAR CTwm4NxEvent *)this;
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}
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/**
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* Return the Twm4Nx event that will be generated when the Main Menu
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* item is selected.
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*
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* @return. This function always returns EVENT_SYSTEM_NOP.
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*/
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inline uint16_t getEvent(void)
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{
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return EVENT_CALIB_START;
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}
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public:
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/**
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* CCalibrationFactory Constructor
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*/
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inline CCalibrationFactory(void)
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{
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m_twm4nx = (FAR CTwm4Nx *)0;
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}
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/**
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* CCalibrationFactory Destructor
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*/
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inline ~CCalibrationFactory(void)
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{
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// REVISIT: Would need to remove Main Menu item
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}
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/**
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* CCalibrationFactory Initializer. Performs parts of the instance
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* construction that may fail. In this implementation, it registers
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* a menu item in the Main Menu and, optionally, bring up a
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* CCalibration instance now in order calibrate unconditionally on
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* start-up
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*
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* @param twm4nx The Twm4Nx session instance
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* @return True if successfully initialized
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*/
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bool initialize(FAR CTwm4Nx *twm4nx);
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};
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}
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#endif // __APPS_INCLUDE_GRAPHICS_TWM4NX_APPS_CCALIBRATION_HXX
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