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Bootstrap pinch_gestures class

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This commit is contained in:
Rico Tiongson 2019-02-07 22:30:03 +08:00
parent 3a0e1361c9
commit e7573938b4
5 changed files with 279 additions and 2 deletions
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106
src/lib/gesture/pinch_gesture.cpp Normal file
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/* WARNING: pinch gestures are experimental */
#ifndef __COMFORTABLE_SWIPE__gesture_pinch_gesture__
#define __COMFORTABLE_SWIPE__gesture_pinch_gesture__
/*
Comfortable Swipe
by Rico Tiongson
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <iostream> // std::cout, std::endl
#include "xdo_gesture.h"
extern "C"
{
#include <xdo.h> // xdo, xdo_new, xdo_free,
// xdo_get_mouse_location
// CURRENT_WINDOW
}
namespace comfortable_swipe::gesture
{
/**
* Constructs a new pinch gesture, given configurations for certain pinch events.
*/
pinch_gesture::pinch_gesture
(
const float threshold,
const char* pinch_in3,
const char* pinch_in4,
const char* pinch_out3,
const char* pinch_out4
):
comfortable_swipe::gesture::xdo_gesture(),
threshold_squared(threshold),
commands(new const char*[4]{pinch_in3, pinch_in4, pinch_out3, pinch_out4})
{ }
/**
* Destructs this pinch gesture.
*/
pinch_gesture::~pinch_gesture()
{
delete[] commands;
}
/**
* Hook on begin of pinch gesture.
*/
void pinch_gesture::begin()
{
this->previous_gesture = swipe_gesture::FRESH;
this->previous_radius = this->radius;
}
/**
* Hook on update of swipe gesture.
*/
void swipe_gesture::update()
{
float delta_radius = this->radius - this->previous_radius;
this->previous_radius = this->radius;
if (this->delta_radius > EPSILON)
{
// TODO: pinch out
}
else if (this->delta_radius < -EPSILON)
{
// TODO: pinch in
}
}
/**
* Hook on end of swipe gesture.
*/
void pinch_gesture::end()
{ }
/* STATICS DEFINITIONS */
const int pinch_gesture::MSK_THREE_FINGERS = 0;
const int pinch_gesture::MSK_FOUR_FINGERS = 1;
const int pinch_gesture::MSK_NEGATIVE = 0;
const int pinch_gesture::MSK_POSITIVE = 2;
const int pinch_gesture::FRESH = -1;
const char * const pinch_gesture::command_map[4] = {
"pinch_in 3",
"pinch_in 4",
"pinch_out 3",
"pinch_out 4"
};
}
#endif /* __COMFORTABLE_SWIPE__gesture_pinch_gesture__ */

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src/lib/gesture/pinch_gesture.h Normal file
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/* WARNING: experimental */
#ifndef __COMFORTABLE_SWIPE__gesture_pinch_gesture_h__
#define __COMFORTABLE_SWIPE__gesture_pinch_gesture_h__
/*
Comfortable Swipe
by Rico Tiongson
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "xdo_gesture.h"
#ifdef __cplusplus
extern "C" {
#endif
namespace comfortable_swipe::gesture
{
class pinch_gesture : protected xdo_gesture
{
public:
// constructor
pinch_gesture(
const float threshold,
const char* pinch_in3,
const char* pinch_in4,
const char* pinch_out3,
const char* pinch_out4
);
~pinch_gesture();
float radius, omega;
void begin() override;
void update() override;
void end() override;
protected:
// current location
float previous_radius;
float threshold_squared;
int previous_gesture;
const char ** commands;
public:
// static constants
static const int MSK_THREE_FINGERS;
static const int MSK_FOUR_FINGERS;
static const int MSK_NEGATIVE;
static const int MSK_POSITIVE;
static const int FRESH;
static const char * const command_map[4];
// regex patterns
static const char* GESTURE_BEGIN_REGEX_PATTERN;
static const char* GESTURE_UPDATE_REGEX_PATTERN;
static const char* GESTURE_END_REGEX_PATTERN;
};
}
#ifdef __cplusplus
}
#endif
#endif /* __COMFORTABLE_SWIPE__gesture_pinch_gesture_h__ */

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src/lib/gesture/pinch_gesture.regex.cpp Normal file
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/* WARNING: pinch gestures are experimental */
#ifndef __COMFORTABLE_SWIPE__gesture_pinch_gesture_regex__
#define __COMFORTABLE_SWIPE__gesture_pinch_gesture_regex__
/*
Comfortable Swipe
by Rico Tiongson
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
namespace comfortable_swipe::gesture
{
/**
* Regex pattern for the libinput entry for start of pinch.
* Extracts one match for the number of fingers used during the pionch.
*
* eg. event15 GESTURE_PINCH_BEGIN +34.33s 3
* ^
* fingers
*/
const char* pinch_gesture::GESTURE_BEGIN_REGEX_PATTERN =
"^" // start of string
"[ -]event\\d+" // event
"\\s+GESTURE_PINCH_BEGIN" // gesture
"\\s+\\S+" // timestamp
"\\s+(\\d+)" // fingers
"\\s*$" // end of string
;
/**
* Regex pattern for the libinput entry for the end of swipe.
* Extracts one match for the number of fingers used during the swipe.
*
* eg. event15 GESTURE_PINCH_END +35.03s 3
* ^
* fingers
*/
const char* pinch_gesture::GESTURE_END_REGEX_PATTERN =
"^" // start of string
"[ -]event\\d+" // event
"\\s+GESTURE_PINCH_END" // gesture
"\\s+\\S+" // timestamp
"\\s+(\\d+)" // fingers
"\\s*$" // end of string
;
// matches signed decimal numbers (eg. "6.02" "-1.1")
#define CF_NUMBER_REGEX "-?\\d+(?:\\.\\d+)"
// matches and extracts a space-prefixed signed fraction (eg. "-3.00/ 5.12")
#define CF_NUMBER_DIVISION "\\s*(" CF_NUMBER_REGEX ")/\\s*(" CF_NUMBER_REGEX ")"
/**
* Regex pattern for the libinput entry for during a pinch.
* Extracts number of fingers used and the speed (normal and accelerated) of the pinch.
* Extracts radius and rotational velocity of the pinch motion as well.
*
* eg. event8 GESTURE_PINCH_UPDATE +128.15s 3 -1.64/ 2.08 (-4.43/ 5.62 unaccelerated) 1.40 @ -0.14
* ^ ^ ^ ^ ^ ^ ^
* fingers dx dy udx udy radius omega
*/
const char* pinch_gesture::GESTURE_UPDATE_REGEX_PATTERN =
"^" // start of string
"[ -]event\\d+" // event
"\\s+GESTURE_PINCH_UPDATE" // gesture
"\\s+\\S+" // timestamp
"\\s+(\\d+)" // fingers
"\\s+" CF_NUMBER_DIVISION // speed (dx/dy)
"\\s+\\(" CF_NUMBER_DIVISION "\\s+unaccelerated\\)" // unaccelerated speed (udx/udy)
"\\s+(" CF_NUMBER_REGEX ")" // radius
" @\\s+(" CF_NUMBER_REGEX ")" // angular velocity (omega)
"\\s*$" // end of string
;
// delete macros
#undef CF_NUMBER_DIVISION
#undef CF_NUMBER_EXTRACT
#undef CF_NUMBER_REGEX
}
#endif /* __COMFORTABLE_SWIPE__gesture_pinch_gesture_regex__ */