d244b7a11d
apps/graphics/twm4nx: Additional redesign. Window draggin now sort of works in an unreliable hurky-gurky way. More to be done.
apps/graphics/twm4nx: First cut at redesigned dragging logic
299 lines
11 KiB
C++
299 lines
11 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// apps/graphics/twm4nx/include/cinput.hxx
|
|
// Keyboard injection
|
|
//
|
|
// Copyright (C) 2019 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 nor the names of its contributors may 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 __APPS_INCLUDE_GRAPHICS_TWM4NX_CINPUT_HXX
|
|
#define __APPS_INCLUDE_GRAPHICS_TWM4NX_CINPUT_HXX
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// Included Files
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
#include <nuttx/nx/nxglib.h>
|
|
|
|
#include <semaphore.h>
|
|
#include <pthread.h>
|
|
#include <fixedmath.h>
|
|
|
|
#include <nuttx/nx/nxglib.h>
|
|
#include <nuttx/input/mouse.h>
|
|
|
|
#include "graphics/nxwidgets/cnxserver.hxx"
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// Implementation Classes
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
namespace Twm4Nx
|
|
{
|
|
class CTwm4Nx; // Forward reference
|
|
|
|
#ifdef CONFIG_TWM4NX_TOUCHSCREEN
|
|
/**
|
|
* Touchscreen calibration data
|
|
*/
|
|
|
|
#ifdef CONFIG_TWM4NX_TOUCHSCREEN_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
|
|
#endif // CONFIG_TWM4NX_TOUCHSCREEN
|
|
|
|
/**
|
|
* The CInput class provides receives raw keyboard and mouse inputs and
|
|
* injects that input into NX which it can be properly distributed to the
|
|
* window that has focus (i.e., the window at the top of the display
|
|
* hierarchy, often a modal window). In additional, the cursor is
|
|
* controlled to track the mouse position.
|
|
*/
|
|
|
|
class CInput
|
|
{
|
|
private:
|
|
|
|
/**
|
|
* The state of the listener thread.
|
|
*/
|
|
|
|
enum EListenerState
|
|
{
|
|
LISTENER_NOTRUNNING = 0, /**< The listener thread has not yet been started */
|
|
LISTENER_STARTED, /**< The listener thread has been started, but is not yet running */
|
|
LISTENER_RUNNING, /**< The listener thread is running normally */
|
|
LISTENER_STOPREQUESTED, /**< The listener thread has been requested to stop */
|
|
LISTENER_TERMINATED, /**< The listener thread terminated normally */
|
|
LISTENER_FAILED /**< The listener thread terminated abnormally */
|
|
};
|
|
|
|
/**
|
|
* CInput state data
|
|
*/
|
|
|
|
// Session
|
|
|
|
CTwm4Nx *m_twm4nx; /**< The Twm4Nx session */
|
|
#ifndef CONFIG_TWM4NX_NOKEYBOARD
|
|
int m_kbdFd; /**< File descriptor of the opened keyboard device */
|
|
#endif
|
|
#ifndef CONFIG_TWM4NX_NOMOUSE
|
|
int m_mouseFd; /**< File descriptor of the opened mouse device */
|
|
#endif
|
|
|
|
// Listener
|
|
|
|
pthread_t m_thread; /**< The listener thread ID */
|
|
volatile enum EListenerState m_state; /**< The state of the listener thread */
|
|
sem_t m_waitSem; /**< Used to synchronize with the listener thread */
|
|
|
|
#ifdef CONFIG_TWM4NX_TOUCHSCREEN
|
|
// Calibration
|
|
|
|
bool m_calib; /**< False: Use raw, uncalibrated touches */
|
|
struct SCalibrationData m_calData; /**< Touchscreen calibration data */
|
|
#endif
|
|
|
|
|
|
#ifndef CONFIG_TWM4NX_NOKEYBOARD
|
|
/**
|
|
* Open the keyboard device. Not very interesting for the case of
|
|
* standard device but much more interesting for a USB keyboard device
|
|
* that may disappear when the keyboard is disconnect but later reappear
|
|
* when the keyboard is reconnected. In this case, this function will
|
|
* not return until the keyboard device was successfully opened (or
|
|
* until an irrecoverable error occurs.
|
|
*
|
|
* Opens the keyboard device specified by CONFIG_TWM4NX_KEYBOARD_DEVPATH.
|
|
*
|
|
* @return On success, then method returns a valid file descriptor. A
|
|
* negated errno value is returned if an irrecoverable error occurs.
|
|
*/
|
|
|
|
inline int keyboardOpen(void);
|
|
#endif
|
|
|
|
#ifndef CONFIG_TWM4NX_NOMOUSE
|
|
/**
|
|
* Open the mouse/touchscreen input device. Not very interesting for the
|
|
* case of standard character device but much more interesting for
|
|
* USB mouse devices that may disappear when disconnected but later
|
|
* reappear when reconnected. In this case, this function will
|
|
* not return until the input device was successfully opened (or
|
|
* until an irrecoverable error occurs).
|
|
*
|
|
* Opens the mouse input device specified by CONFIG_TWM4NX_MOUSE_DEVPATH.
|
|
*
|
|
* @return On success, then method returns a valid file descriptor. A
|
|
* negated errno value is returned if an irrecoverable error occurs.
|
|
*/
|
|
|
|
inline int mouseOpen(void);
|
|
#endif
|
|
|
|
#ifndef CONFIG_TWM4NX_NOKEYBOARD
|
|
/**
|
|
* Read data from the keyboard device and inject the keyboard data
|
|
* into NX for proper distribution.
|
|
*
|
|
* @return On success, then method returns a valid file descriptor. A
|
|
* negated errno value is returned if an irrecoverable error occurs.
|
|
*/
|
|
|
|
inline int keyboardInput(void);
|
|
#endif
|
|
|
|
#ifndef CONFIG_TWM4NX_NOMOUSE
|
|
#ifdef CONFIG_TWM4NX_TOUCHSCREEN
|
|
/**
|
|
* Calibrate raw touchscreen input.
|
|
*
|
|
* @param raw The raw touch sample
|
|
* @param scaled The location to return the scaled touch position
|
|
* @return On success, this method returns zero (OK). A negated errno
|
|
* value is returned if an irrecoverable error occurs.
|
|
*/
|
|
|
|
int scaleTouchData(FAR const struct touch_point_s &raw,
|
|
FAR struct nxgl_point_s &scaled);
|
|
#endif
|
|
|
|
/**
|
|
* Read data from the mouse/touchscreen device. If the input device
|
|
* is a mouse, then update the cursor position. And, in either case,
|
|
* inject the mouse data into NX for proper distribution.
|
|
*
|
|
* @return On success, this method returns zero (OK). A negated errno
|
|
* value is returned if an irrecoverable error occurs.
|
|
*/
|
|
|
|
inline int mouseInput(void);
|
|
#endif
|
|
|
|
/**
|
|
* This is the heart of the keyboard/mouse listener thread. It
|
|
* contains the actual logic that listeners for and dispatches input
|
|
* events to the NX server.
|
|
*
|
|
* @return If the session terminates gracefully (i.e., because >m_state
|
|
* is no longer equal to LISTENER_RUNNING, then method returns OK. A
|
|
* negated errno value is returned if an error occurs while reading from
|
|
* the input device. A read error, depending upon the type of the
|
|
* error, may simply indicate that a USB device was removed and we
|
|
* should wait for the device to be connected.
|
|
*/
|
|
|
|
inline int session(void);
|
|
|
|
/**
|
|
* The keyboard/mouse listener thread. This is the entry point of a
|
|
* thread that listeners for and dispatches keyboard and mouse events
|
|
* to the NX server. It simply opens the input devices (using
|
|
* CInput::keyboardOpen() and CInput::mouseOpen()) and executes the
|
|
* session (via CInput::session()).
|
|
*
|
|
* If an errors while reading from the input device AND that device is
|
|
* configured to use a USB connection, then this function will wait for
|
|
* the USB device to be re-connected.
|
|
*
|
|
* @param arg. The CInput 'this' pointer cast to a void*.
|
|
* @return This function normally does not return but may return NULL
|
|
* on error conditions.
|
|
*/
|
|
|
|
static FAR void *listener(FAR void *arg);
|
|
|
|
public:
|
|
|
|
/**
|
|
* CInput Constructor
|
|
*
|
|
* @param twm4nx. An instance of the Twm4Nx session.
|
|
*/
|
|
|
|
CInput(CTwm4Nx *twm4nx);
|
|
|
|
/**
|
|
* CInput Destructor
|
|
*/
|
|
|
|
~CInput(void);
|
|
|
|
#ifdef CONFIG_TWM4NX_TOUCHSCREEN
|
|
/**
|
|
* Provide touchscreen calibration data. If calibration data is received (and
|
|
* the touchscreen is enabled), then received touchscreen data will be scaled
|
|
* using the calibration data and forward to the NX layer which dispatches the
|
|
* touchscreen events in window-relative positions to the correct NX window.
|
|
*
|
|
* @param caldata. A reference to the touchscreen data.
|
|
*/
|
|
|
|
void setCalibrationData(const struct SCalibrationData &caldata);
|
|
#endif
|
|
|
|
/**
|
|
* Start the keyboard/mouse listener thread.
|
|
*
|
|
* @return True if the keyboard listener thread was correctly started.
|
|
*/
|
|
|
|
bool start(void);
|
|
};
|
|
}
|
|
|
|
#endif // __APPS_INCLUDE_GRAPHICS_TWM4NX_CINPUT_HXX
|