mirror of
https://github.com/libretro/RetroArch.git
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204 lines
6.4 KiB
C
204 lines
6.4 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2017 - Daniel De Matteis
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* Copyright (C) 2016-2019 - Brad Parker
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _MENU_INPUT_H
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#define _MENU_INPUT_H
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#include <stdint.h>
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#include <compat/strl.h>
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#include <retro_common_api.h>
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#include <libretro.h>
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#include "menu_defines.h"
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#include "../input/input_types.h"
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RETRO_BEGIN_DECLS
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/* Mouse wheel tilt actions repeat at a very high
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* frequency - we ignore any input that occurs
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* with a period less than MENU_INPUT_HORIZ_WHEEL_DELAY */
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#define MENU_INPUT_HORIZ_WHEEL_DELAY 250000 /* 250 ms */
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/* Press directions are triggered as a pulse train.
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* Pulse period starts at MENU_INPUT_PRESS_DIRECTION_DELAY_MAX,
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* and decreases to MENU_INPUT_PRESS_DIRECTION_DELAY_MIN as
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* the start/current delta offset increases from
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* MENU_INPUT_DPI_THRESHOLD_PRESS_DIRECTION_MIN to
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* MENU_INPUT_DPI_THRESHOLD_PRESS_DIRECTION_MAX */
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#define MENU_INPUT_PRESS_DIRECTION_DELAY_MIN 100000 /* 100 ms */
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#define MENU_INPUT_PRESS_DIRECTION_DELAY_MAX 500000 /* 500 ms */
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#define MENU_INPUT_HIDE_CURSOR_DELAY 4000000 /* 4 seconds */
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#define MENU_INPUT_PRESS_TIME_SHORT 200000 /* 200 ms */
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#define MENU_INPUT_PRESS_TIME_LONG 1000000 /* 1 second */
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/* (Anything less than 'short' is considered a tap) */
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/* Swipe gestures must be completed within a duration
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* of MENU_INPUT_SWIPE_TIMEOUT ms (helps to minimise
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* unwanted input if user 'zones out' and meanders on
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* a touchscreen) */
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#define MENU_INPUT_SWIPE_TIMEOUT 500000 /* 500 ms */
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/* Standard behaviour (on Android, at least) is to stop
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* scrolling when the user touches the screen. To prevent
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* jerky stop/start scrolling, we wait MENU_INPUT_Y_ACCEL_RESET_DELAY
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* ms before resetting y acceleration after a stationary
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* pointer down event is detected */
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#define MENU_INPUT_Y_ACCEL_RESET_DELAY 50000 /* 50 ms */
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#define MENU_INPUT_Y_ACCEL_DECAY_FACTOR 0.96f
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/* Pointer is considered stationary if dx/dy remain
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* below (display DPI) * MENU_INPUT_DPI_THRESHOLD_DRAG */
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#define MENU_INPUT_DPI_THRESHOLD_DRAG 0.1f
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/* Press direction detection:
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* While holding the pointer down, a press in a
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* specific direction (up, down, left, right) will
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* be detected if:
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* - Current delta (i.e. from start to current) in
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* press direction is greater than
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* (display DPI) * MENU_INPUT_DPI_THRESHOLD_PRESS_DIRECTION_MIN
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* - Current delta in perpendicular axis is less than
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* (display DPI) * MENU_INPUT_DPI_THRESHOLD_PRESS_DIRECTION_TANGENT
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* Press direction repeat rate is proportional to the current
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* delta in press direction.
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* Note: 'Tangent' is technically not the correct word here,
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* but the alternatives look silly, and the actual meaning
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* is transparent... */
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#define MENU_INPUT_DPI_THRESHOLD_PRESS_DIRECTION_MIN 0.5f
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#define MENU_INPUT_DPI_THRESHOLD_PRESS_DIRECTION_MAX 1.4f
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#define MENU_INPUT_DPI_THRESHOLD_PRESS_DIRECTION_TANGENT 0.35f
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/* Swipe detection:
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* A gesture will register as a swipe if:
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* - Final start/current delta in swipe direction is
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* greater than (display DPI) * MENU_INPUT_DPI_THRESHOLD_SWIPE
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* - Maximum start/current delta in all other directions is
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* less than (display DPI) * MENU_INPUT_DPI_THRESHOLD_SWIPE_TANGENT
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* - Pointer was held for less than MENU_INPUT_SWIPE_TIMEOUT ms */
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#define MENU_INPUT_DPI_THRESHOLD_SWIPE 0.55f
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#define MENU_INPUT_DPI_THRESHOLD_SWIPE_TANGENT 0.45f
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enum menu_pointer_type
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{
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MENU_POINTER_DISABLED = 0,
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MENU_POINTER_MOUSE,
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MENU_POINTER_TOUCHSCREEN
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};
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enum menu_input_mouse_hw_id
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{
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MENU_MOUSE_X_AXIS = 0,
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MENU_MOUSE_Y_AXIS,
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MENU_MOUSE_LEFT_BUTTON,
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MENU_MOUSE_RIGHT_BUTTON,
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MENU_MOUSE_WHEEL_UP,
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MENU_MOUSE_WHEEL_DOWN,
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MENU_MOUSE_HORIZ_WHEEL_UP,
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MENU_MOUSE_HORIZ_WHEEL_DOWN
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};
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enum menu_input_pointer_press_direction
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{
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MENU_INPUT_PRESS_DIRECTION_NONE = 0,
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MENU_INPUT_PRESS_DIRECTION_UP,
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MENU_INPUT_PRESS_DIRECTION_DOWN,
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MENU_INPUT_PRESS_DIRECTION_LEFT,
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MENU_INPUT_PRESS_DIRECTION_RIGHT
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};
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enum menu_input_pointer_gesture
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{
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MENU_INPUT_GESTURE_NONE = 0,
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MENU_INPUT_GESTURE_TAP,
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MENU_INPUT_GESTURE_SHORT_PRESS,
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MENU_INPUT_GESTURE_LONG_PRESS,
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MENU_INPUT_GESTURE_SWIPE_UP,
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MENU_INPUT_GESTURE_SWIPE_DOWN,
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MENU_INPUT_GESTURE_SWIPE_LEFT,
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MENU_INPUT_GESTURE_SWIPE_RIGHT
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};
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/* Defines set of (abstracted) inputs/states
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* common to mouse + touchscreen hardware */
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typedef struct menu_input_pointer_hw_state
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{
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bool active;
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int16_t x;
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int16_t y;
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bool select_pressed;
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bool cancel_pressed;
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bool up_pressed;
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bool down_pressed;
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bool left_pressed;
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bool right_pressed;
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} menu_input_pointer_hw_state_t;
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typedef struct menu_input_pointer
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{
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enum menu_pointer_type type;
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bool active;
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bool pressed;
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bool dragged;
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retro_time_t press_duration;
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enum menu_input_pointer_press_direction press_direction;
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int16_t x;
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int16_t y;
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int16_t dx;
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int16_t dy;
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float y_accel;
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} menu_input_pointer_t;
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typedef struct menu_input
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{
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menu_input_pointer_t pointer;
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unsigned ptr;
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bool select_inhibit;
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bool cancel_inhibit;
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} menu_input_t;
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typedef struct menu_input_ctx_hitbox
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{
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int32_t x1;
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int32_t x2;
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int32_t y1;
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int32_t y2;
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} menu_input_ctx_hitbox_t;
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/* Provides access to all pointer device parameters */
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void menu_input_get_pointer_state(menu_input_pointer_t *pointer);
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/* Getters/setters for menu item (index) currently
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* selected/highlighted (hovered over) by the pointer
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* device
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* Note: Each menu driver is responsible for setting this */
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unsigned menu_input_get_pointer_selection(void);
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void menu_input_set_pointer_selection(unsigned selection);
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/* Allows pointer y acceleration to be overridden
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* (typically want to set acceleration to zero when
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* calling populate entries) */
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void menu_input_set_pointer_y_accel(float y_accel);
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RETRO_END_DECLS
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#endif
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