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hekate/bdk/libs/lvgl/lv_core/lv_indev.c
CTCaer 185526d134 Introducing Bootloader Development Kit (BDK) 
BDK will allow developers to use the full collection of drivers,
with limited editing, if any, for making payloads for Nintendo Switch.

Using a single source for everything will also help decoupling
Switch specific code and easily port it to other Tegra X1/X1+ platforms.
And maybe even to lower targets.

Everything is now centrilized into bdk folder.
Every module or project can utilize it by simply including it.

This is just the start and it will continue to improve.
2020-06-14 15:25:21 +03:00

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/**
* @file lv_indev_proc.c
*
*/
/*********************
* INCLUDES
********************/
#include "lv_indev.h"
#include "../lv_hal/lv_hal_tick.h"
#include "../lv_core/lv_group.h"
#include "../lv_core/lv_refr.h"
#include "../lv_misc/lv_task.h"
#include "../lv_misc/lv_math.h"
#include "../lv_draw/lv_draw_rbasic.h"
#include "lv_obj.h"
/*********************
* DEFINES
*********************/
#if LV_INDEV_DRAG_THROW <= 0
#warning "LV_INDEV_DRAG_THROW must be greater than 0"
#endif
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
#if LV_INDEV_READ_PERIOD != 0
static void indev_proc_task(void * param);
static void indev_pointer_proc(lv_indev_t * i, lv_indev_data_t * data);
static void indev_keypad_proc(lv_indev_t * i, lv_indev_data_t * data);
static void indev_encoder_proc(lv_indev_t * i, lv_indev_data_t * data);
static void indev_button_proc(lv_indev_t * i, lv_indev_data_t * data);
static void indev_proc_press(lv_indev_proc_t * proc);
static void indev_proc_release(lv_indev_proc_t * proc);
static void indev_proc_reset_query_handler(lv_indev_t * indev);
static lv_obj_t * indev_search_obj(const lv_indev_proc_t * proc, lv_obj_t * obj);
static void indev_drag(lv_indev_proc_t * state);
static void indev_drag_throw(lv_indev_proc_t * state);
#endif
/**********************
* STATIC VARIABLES
**********************/
static lv_indev_t * indev_act;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Initialize the display input device subsystem
*/
void lv_indev_init(void)
{
#if LV_INDEV_READ_PERIOD != 0
lv_task_create(indev_proc_task, LV_INDEV_READ_PERIOD, LV_TASK_PRIO_MID, NULL);
#endif
lv_indev_reset(NULL); /*Reset all input devices*/
}
/**
* Get the currently processed input device. Can be used in action functions too.
* @return pointer to the currently processed input device or NULL if no input device processing right now
*/
lv_indev_t * lv_indev_get_act(void)
{
return indev_act;
}
/**
* Get the type of an input device
* @param indev pointer to an input device
* @return the type of the input device from `lv_hal_indev_type_t` (`LV_INDEV_TYPE_...`)
*/
lv_hal_indev_type_t lv_indev_get_type(const lv_indev_t * indev)
{
if(indev == NULL) return LV_INDEV_TYPE_NONE;
return indev->driver.type;
}
/**
* Reset one or all input devices
* @param indev pointer to an input device to reset or NULL to reset all of them
*/
void lv_indev_reset(lv_indev_t * indev)
{
if(indev) indev->proc.reset_query = 1;
else {
lv_indev_t * i = lv_indev_next(NULL);
while(i) {
i->proc.reset_query = 1;
i = lv_indev_next(i);
}
}
}
/**
* Reset the long press state of an input device
* @param indev pointer to an input device
*/
void lv_indev_reset_lpr(lv_indev_t * indev)
{
indev->proc.long_pr_sent = 0;
indev->proc.longpr_rep_timestamp = lv_tick_get();
indev->proc.pr_timestamp = lv_tick_get();
}
/**
* Enable input devices device by type
* @param type Input device type
* @param enable true: enable this type; false: disable this type
*/
void lv_indev_enable(lv_hal_indev_type_t type, bool enable)
{
lv_indev_t * i = lv_indev_next(NULL);
while(i) {
if(i->driver.type == type) i->proc.disabled = enable == false ? 1 : 0;
i = lv_indev_next(i);
}
}
/**
* Set a cursor for a pointer input device (for LV_INPUT_TYPE_POINTER and LV_INPUT_TYPE_BUTTON)
* @param indev pointer to an input device
* @param cur_obj pointer to an object to be used as cursor
*/
void lv_indev_set_cursor(lv_indev_t * indev, lv_obj_t * cur_obj)
{
if(indev->driver.type != LV_INDEV_TYPE_POINTER) return;
indev->cursor = cur_obj;
if (indev->cursor)
{
lv_obj_set_parent(indev->cursor, lv_layer_sys());
lv_obj_set_pos(indev->cursor, indev->proc.act_point.x, indev->proc.act_point.y);
}
}
#if USE_LV_GROUP
/**
* Set a destination group for a keypad input device (for LV_INDEV_TYPE_KEYPAD)
* @param indev pointer to an input device
* @param group point to a group
*/
void lv_indev_set_group(lv_indev_t * indev, lv_group_t * group)
{
if(indev->driver.type == LV_INDEV_TYPE_KEYPAD || indev->driver.type == LV_INDEV_TYPE_ENCODER) indev->group = group;
}
#endif
/**
* Set the an array of points for LV_INDEV_TYPE_BUTTON.
* These points will be assigned to the buttons to press a specific point on the screen
* @param indev pointer to an input device
* @param group point to a group
*/
void lv_indev_set_button_points(lv_indev_t * indev, const lv_point_t * points)
{
if(indev->driver.type == LV_INDEV_TYPE_BUTTON) indev->btn_points = points;
}
/**
* Set feedback callback for indev.
* @param indev pointer to an input device
* @param feedback feedback callback
*/
void lv_indev_set_feedback(lv_indev_t *indev, lv_indev_feedback_t feedback)
{
indev->feedback = feedback;
}
/**
* Get the last point of an input device (for LV_INDEV_TYPE_POINTER and LV_INDEV_TYPE_BUTTON)
* @param indev pointer to an input device
* @param point pointer to a point to store the result
*/
void lv_indev_get_point(const lv_indev_t * indev, lv_point_t * point)
{
if(indev->driver.type != LV_INDEV_TYPE_POINTER && indev->driver.type != LV_INDEV_TYPE_BUTTON) {
point->x = -1;
point->y = -1;
} else {
point->x = indev->proc.act_point.x;
point->y = indev->proc.act_point.y;
}
}
/**
* Get the last key of an input device (for LV_INDEV_TYPE_KEYPAD)
* @param indev pointer to an input device
* @return the last pressed key (0 on error)
*/
uint32_t lv_indev_get_key(const lv_indev_t * indev)
{
if(indev->driver.type != LV_INDEV_TYPE_KEYPAD) return 0;
else return indev->proc.last_key;
}
/**
* Check if there is dragging with an input device or not (for LV_INDEV_TYPE_POINTER and LV_INDEV_TYPE_BUTTON)
* @param indev pointer to an input device
* @return true: drag is in progress
*/
bool lv_indev_is_dragging(const lv_indev_t * indev)
{
if(indev == NULL) return false;
if(indev->driver.type != LV_INDEV_TYPE_POINTER && indev->driver.type != LV_INDEV_TYPE_BUTTON) return false;
return indev->proc.drag_in_prog == 0 ? false : true;
}
/**
* Get the vector of dragging of an input device (for LV_INDEV_TYPE_POINTER and LV_INDEV_TYPE_BUTTON)
* @param indev pointer to an input device
* @param point pointer to a point to store the vector
*/
void lv_indev_get_vect(const lv_indev_t * indev, lv_point_t * point)
{
if(indev == NULL) {
point->x = 0;
point->y = 0;
return;
}
if(indev->driver.type != LV_INDEV_TYPE_POINTER && indev->driver.type != LV_INDEV_TYPE_BUTTON) {
point->x = 0;
point->y = 0;
} else {
point->x = indev->proc.vect.x;
point->y = indev->proc.vect.y;
}
}
/**
* Get elapsed time since last press
* @param indev pointer to an input device (NULL to get the overall smallest inactivity)
* @return Elapsed ticks (milliseconds) since last press
*/
uint32_t lv_indev_get_inactive_time(const lv_indev_t * indev)
{
uint32_t t;
if(indev) return t = lv_tick_elaps(indev->last_activity_time);
lv_indev_t * i;
t = UINT16_MAX;
i = lv_indev_next(NULL);
while(i) {
t = LV_MATH_MIN(t, lv_tick_elaps(i->last_activity_time));
i = lv_indev_next(i);
}
return t;
}
/**
* Get feedback callback for indev.
* @param indev pointer to an input device
* @return feedback callback
*/
lv_indev_feedback_t lv_indev_get_feedback(const lv_indev_t *indev)
{
return indev->feedback;
}
/**
* Do nothing until the next release
* @param indev pointer to an input device
*/
void lv_indev_wait_release(lv_indev_t * indev)
{
indev->proc.wait_unil_release = 1;
}
/**********************
* STATIC FUNCTIONS
**********************/
#if LV_INDEV_READ_PERIOD != 0
/**
* Called periodically to handle the input devices
* @param param unused
*/
static void indev_proc_task(void * param)
{
(void)param;
LV_LOG_TRACE("indev task started");
lv_indev_data_t data;
lv_indev_t * i;
i = lv_indev_next(NULL);
/*Read and process all indevs*/
while(i) {
indev_act = i;
/*Handle reset query before processing the point*/
indev_proc_reset_query_handler(i);
if(i->proc.disabled == 0) {
bool more_to_read;
do {
/*Read the data*/
more_to_read = lv_indev_read(i, &data);
indev_proc_reset_query_handler(i); /*The active object might deleted even in the read function*/
i->proc.state = data.state;
if(i->proc.state == LV_INDEV_STATE_PR) {
i->last_activity_time = lv_tick_get();
}
if(i->driver.type == LV_INDEV_TYPE_POINTER) {
indev_pointer_proc(i, &data);
} else if(i->driver.type == LV_INDEV_TYPE_KEYPAD) {
indev_keypad_proc(i, &data);
} else if(i->driver.type == LV_INDEV_TYPE_ENCODER) {
indev_encoder_proc(i, &data);
} else if(i->driver.type == LV_INDEV_TYPE_BUTTON) {
indev_button_proc(i, &data);
}
/*Handle reset query if it happened in during processing*/
indev_proc_reset_query_handler(i);
} while(more_to_read);
}
i = lv_indev_next(i); /*Go to the next indev*/
}
indev_act = NULL; /*End of indev processing, so no act indev*/
LV_LOG_TRACE("indev task finished");
}
/**
* Process a new point from LV_INDEV_TYPE_POINTER input device
* @param i pointer to an input device
* @param data pointer to the data read from the input device
*/
static void indev_pointer_proc(lv_indev_t * i, lv_indev_data_t * data)
{
/*Move the cursor if set and moved*/
if(i->cursor != NULL &&
(i->proc.last_point.x != data->point.x ||
i->proc.last_point.y != data->point.y)) {
/*Use cursor's center as pointer*/
uint32_t off_x = lv_obj_get_width(i->cursor) >> 1;
uint32_t off_y = lv_obj_get_height(i->cursor) >> 1;
lv_obj_set_pos(i->cursor, data->point.x - off_x, data->point.y - off_y);
}
i->proc.act_point.x = data->point.x;
i->proc.act_point.y = data->point.y;
if(i->proc.state == LV_INDEV_STATE_PR) {
#if LV_INDEV_POINT_MARKER != 0
lv_area_t area;
area.x1 = i->proc.act_point.x - (LV_INDEV_POINT_MARKER >> 1);
area.y1 = i->proc.act_point.y - (LV_INDEV_POINT_MARKER >> 1);
area.x2 = i->proc.act_point.x + ((LV_INDEV_POINT_MARKER >> 1) | 0x1);
area.y2 = i->proc.act_point.y + ((LV_INDEV_POINT_MARKER >> 1) | 0x1);
lv_rfill(&area, NULL, LV_COLOR_MAKE(0xFF, 0, 0), LV_OPA_COVER);
#endif
indev_proc_press(&i->proc);
} else {
indev_proc_release(&i->proc);
}
i->proc.last_point.x = i->proc.act_point.x;
i->proc.last_point.y = i->proc.act_point.y;
}
/**
* Process a new point from LV_INDEV_TYPE_KEYPAD input device
* @param i pointer to an input device
* @param data pointer to the data read from the input device
*/
static void indev_keypad_proc(lv_indev_t * i, lv_indev_data_t * data)
{
#if USE_LV_GROUP
if(i->group == NULL) return;
/*Key press happened*/
if(data->state == LV_INDEV_STATE_PR &&
i->proc.last_state == LV_INDEV_STATE_REL) {
i->proc.pr_timestamp = lv_tick_get();
lv_obj_t * focused = lv_group_get_focused(i->group);
if(focused && data->key == LV_GROUP_KEY_ENTER) {
focused->signal_func(focused, LV_SIGNAL_PRESSED, indev_act);
}
}
/*Pressing*/
else if(data->state == LV_INDEV_STATE_PR && i->proc.last_state == LV_INDEV_STATE_PR) {
if(data->key == LV_GROUP_KEY_ENTER &&
i->proc.long_pr_sent == 0 &&
lv_tick_elaps(i->proc.pr_timestamp) > LV_INDEV_LONG_PRESS_TIME) {
/*On enter long press leave edit mode.*/
lv_obj_t * focused = lv_group_get_focused(i->group);
if(focused) {
focused->signal_func(focused, LV_SIGNAL_LONG_PRESS, indev_act);
i->proc.long_pr_sent = 1;
}
}
}
/*Release happened*/
else if(data->state == LV_INDEV_STATE_REL && i->proc.last_state == LV_INDEV_STATE_PR) {
/*The user might clear the key when it was released. Always release the pressed key*/
data->key = i->proc.last_key;
/* Edit mode is not used by KEYPAD devices.
* So leave edit mode if we are in it before focusing on the next/prev object*/
if(data->key == LV_GROUP_KEY_NEXT || data->key == LV_GROUP_KEY_PREV) {
lv_group_set_editing(i->group, false);
}
if(data->key == LV_GROUP_KEY_NEXT) {
lv_group_focus_next(i->group);
} else if(data->key == LV_GROUP_KEY_PREV) {
lv_group_focus_prev(i->group);
} else if(data->key == LV_GROUP_KEY_ENTER) {
if(!i->proc.long_pr_sent) {
lv_group_send_data(i->group, data->key);
}
} else {
lv_group_send_data(i->group, data->key);
}
if(i->proc.reset_query) return; /*The object might be deleted in `focus_cb` or due to any other user event*/
i->proc.pr_timestamp = 0;
i->proc.long_pr_sent = 0;
}
i->proc.last_state = data->state;
i->proc.last_key = data->key;
#else
(void)data; /*Unused*/
(void)i; /*Unused*/
#endif
}
/**
* Process a new point from LV_INDEV_TYPE_ENCODER input device
* @param i pointer to an input device
* @param data pointer to the data read from the input device
*/
static void indev_encoder_proc(lv_indev_t * i, lv_indev_data_t * data)
{
#if USE_LV_GROUP
if(i->group == NULL) return;
/*Process the steps first. They are valid only with released button*/
if(data->state == LV_INDEV_STATE_REL) {
/*In edit mode send LEFT/RIGHT keys*/
if(lv_group_get_editing(i->group)) {
int32_t s;
if(data->enc_diff < 0) {
for(s = 0; s < -data->enc_diff; s++) lv_group_send_data(i->group, LV_GROUP_KEY_LEFT);
} else if(data->enc_diff > 0) {
for(s = 0; s < data->enc_diff; s++) lv_group_send_data(i->group, LV_GROUP_KEY_RIGHT);
}
}
/*In navigate mode focus on the next/prev objects*/
else {
int32_t s;
if(data->enc_diff < 0) {
for(s = 0; s < -data->enc_diff; s++) lv_group_focus_prev(i->group);
} else if(data->enc_diff > 0) {
for(s = 0; s < data->enc_diff; s++) lv_group_focus_next(i->group);
}
}
}
/*Key press happened*/
if(data->state == LV_INDEV_STATE_PR &&
i->proc.last_state == LV_INDEV_STATE_REL) {
i->proc.pr_timestamp = lv_tick_get();
}
/*Pressing*/
else if(data->state == LV_INDEV_STATE_PR && i->proc.last_state == LV_INDEV_STATE_PR) {
if(i->proc.long_pr_sent == 0 &&
lv_tick_elaps(i->proc.pr_timestamp) > LV_INDEV_LONG_PRESS_TIME) {
/*On enter long press leave edit mode.*/
lv_obj_t * focused = lv_group_get_focused(i->group);
bool editable = false;
if(focused) focused->signal_func(focused, LV_SIGNAL_GET_EDITABLE, &editable);
if(editable) {
if(i->group->obj_ll.head != i->group->obj_ll.tail)
lv_group_set_editing(i->group, lv_group_get_editing(i->group) ? false : true); /*Toggle edit mode on long press*/
else if(focused)
focused->signal_func(focused, LV_SIGNAL_LONG_PRESS, indev_act);
}
/*If not editable then just send a long press signal*/
else {
if(focused)
focused->signal_func(focused, LV_SIGNAL_LONG_PRESS, indev_act);
}
i->proc.long_pr_sent = 1;
}
}
/*Release happened*/
else if(data->state == LV_INDEV_STATE_REL && i->proc.last_state == LV_INDEV_STATE_PR) {
lv_obj_t * focused = lv_group_get_focused(i->group);
bool editable = false;
if(focused) focused->signal_func(focused, LV_SIGNAL_GET_EDITABLE, &editable);
/*The button was released on a non-editable object. Just send enter*/
if(!editable) {
lv_group_send_data(i->group, LV_GROUP_KEY_ENTER);
}
/*An object is being edited and the button is releases. Just send enter */
else if(i->group->editing) {
if(!i->proc.long_pr_sent || i->group->obj_ll.head == i->group->obj_ll.tail)
lv_group_send_data(i->group, LV_GROUP_KEY_ENTER); /*Ignore long pressed enter release because it comes from mode switch*/
}
/*If the focused object is editable and now in navigate mode then enter edit mode*/
else if(editable && !i->group->editing && !i->proc.long_pr_sent) {
lv_group_set_editing(i->group, lv_group_get_editing(i->group) ? false : true); /*Toggle edit mode on long press*/
}
if(i->proc.reset_query) return; /*The object might be deleted in `focus_cb` or due to any other user event*/
i->proc.pr_timestamp = 0;
i->proc.long_pr_sent = 0;
}
i->proc.last_state = data->state;
i->proc.last_key = data->key;
#else
(void)data; /*Unused*/
(void)i; /*Unused*/
#endif
}
/**
* Process new points from a input device. indev->state.pressed has to be set
* @param indev pointer to an input device state
* @param x x coordinate of the next point
* @param y y coordinate of the next point
*/
static void indev_button_proc(lv_indev_t * i, lv_indev_data_t * data)
{
i->proc.act_point.x = i->btn_points[data->btn].x;
i->proc.act_point.y = i->btn_points[data->btn].y;
/*Still the same point is pressed*/
if(i->proc.last_point.x == i->proc.act_point.x &&
i->proc.last_point.y == i->proc.act_point.y &&
data->state == LV_INDEV_STATE_PR) {
#if LV_INDEV_POINT_MARKER != 0
lv_area_t area;
area.x1 = i->proc.act_point.x - (LV_INDEV_POINT_MARKER >> 1);
area.y1 = i->proc.act_point.y - (LV_INDEV_POINT_MARKER >> 1);
area.x2 = i->proc.act_point.x + ((LV_INDEV_POINT_MARKER >> 1) | 0x1);
area.y2 = i->proc.act_point.y + ((LV_INDEV_POINT_MARKER >> 1) | 0x1);
lv_rfill(&area, NULL, LV_COLOR_MAKE(0xFF, 0, 0), LV_OPA_COVER);
#endif
indev_proc_press(&i->proc);
} else {
/*If a new point comes always make a release*/
indev_proc_release(&i->proc);
}
i->proc.last_point.x = i->proc.act_point.x;
i->proc.last_point.y = i->proc.act_point.y;
}
/**
* Process the pressed state of LV_INDEV_TYPE_POINER input devices
* @param indev pointer to an input device 'proc'
*/
static void indev_proc_press(lv_indev_proc_t * proc)
{
lv_obj_t * pr_obj = proc->act_obj;
if(proc->wait_unil_release != 0) return;
/*If there is no last object then search*/
if(proc->act_obj == NULL) {
pr_obj = indev_search_obj(proc, lv_layer_top());
if(pr_obj == NULL) pr_obj = indev_search_obj(proc, lv_scr_act());
}
/*If there is last object but it is not dragged and not protected also search*/
else if(proc->drag_in_prog == 0 &&
lv_obj_is_protected(proc->act_obj, LV_PROTECT_PRESS_LOST) == false) {/*Now act_obj != NULL*/
pr_obj = indev_search_obj(proc, lv_layer_top());
if(pr_obj == NULL) pr_obj = indev_search_obj(proc, lv_scr_act());
}
/*If a dragable or a protected object was the last then keep it*/
else {
}
/*If a new object was found reset some variables and send a pressed signal*/
if(pr_obj != proc->act_obj) {
proc->last_point.x = proc->act_point.x;
proc->last_point.y = proc->act_point.y;
/*If a new object found the previous was lost, so send a signal*/
if(proc->act_obj != NULL) {
proc->act_obj->signal_func(proc->act_obj, LV_SIGNAL_PRESS_LOST, indev_act);
if(proc->reset_query != 0) return;
}
proc->act_obj = pr_obj; /*Save the pressed object*/
proc->last_obj = proc->act_obj; /*Refresh the last_obj*/
if(proc->act_obj != NULL) {
/* Save the time when the obj pressed.
* It is necessary to count the long press time.*/
proc->pr_timestamp = lv_tick_get();
proc->long_pr_sent = 0;
proc->drag_range_out = 0;
proc->drag_in_prog = 0;
proc->drag_sum.x = 0;
proc->drag_sum.y = 0;
proc->vect.x = 0;
proc->vect.y = 0;
/*Search for 'top' attribute*/
lv_obj_t * i = proc->act_obj;
lv_obj_t * last_top = NULL;
while(i != NULL) {
if(i->top != 0) last_top = i;
i = lv_obj_get_parent(i);
}
if(last_top != NULL) {
/*Move the last_top object to the foreground*/
lv_obj_t * par = lv_obj_get_parent(last_top);
/*After list change it will be the new head*/
lv_ll_chg_list(&par->child_ll, &par->child_ll, last_top);
lv_obj_invalidate(last_top);
}
/*Send a signal about the press*/
proc->act_obj->signal_func(proc->act_obj, LV_SIGNAL_PRESSED, indev_act);
if(proc->reset_query != 0) return;
}
}
/*Calculate the vector*/
proc->vect.x = proc->act_point.x - proc->last_point.x;
proc->vect.y = proc->act_point.y - proc->last_point.y;
/*If there is active object and it can be dragged run the drag*/
if(proc->act_obj != NULL) {
proc->act_obj->signal_func(proc->act_obj, LV_SIGNAL_PRESSING, indev_act);
if(proc->reset_query != 0) return;
indev_drag(proc);
if(proc->reset_query != 0) return;
/*If there is no drag then check for long press time*/
if(proc->drag_in_prog == 0 && proc->long_pr_sent == 0) {
/*Send a signal about the long press if enough time elapsed*/
if(lv_tick_elaps(proc->pr_timestamp) > LV_INDEV_LONG_PRESS_TIME) {
pr_obj->signal_func(pr_obj, LV_SIGNAL_LONG_PRESS, indev_act);
if(proc->reset_query != 0) return;
/*Mark the signal sending to do not send it again*/
proc->long_pr_sent = 1;
/*Save the long press time stamp for the long press repeat handler*/
proc->longpr_rep_timestamp = lv_tick_get();
}
}
/*Send long press repeated signal*/
if(proc->drag_in_prog == 0 && proc->long_pr_sent == 1) {
/*Send a signal about the long press repeate if enough time elapsed*/
if(lv_tick_elaps(proc->longpr_rep_timestamp) > LV_INDEV_LONG_PRESS_REP_TIME) {
pr_obj->signal_func(pr_obj, LV_SIGNAL_LONG_PRESS_REP, indev_act);
if(proc->reset_query != 0) return;
proc->longpr_rep_timestamp = lv_tick_get();
}
}
}
}
/**
* Process the released state of LV_INDEV_TYPE_POINER input devices
* @param proc pointer to an input device 'proc'
*/
static void indev_proc_release(lv_indev_proc_t * proc)
{
if(proc->wait_unil_release != 0) {
proc->act_obj = NULL;
proc->last_obj = NULL;
proc->pr_timestamp = 0;
proc->longpr_rep_timestamp = 0;
proc->wait_unil_release = 0;
}
/*Forgot the act obj and send a released signal */
if(proc->act_obj != NULL) {
/* If the object was protected against press lost then it possible that
* the object is already not pressed but still it is the `act_obj`.
* In this case send the `LV_SIGNAL_RELEASED` if the indev is ON the `act_obj` */
if(lv_obj_is_protected(proc->act_obj, LV_PROTECT_PRESS_LOST)) {
/* Search the object on the current current coordinates.
* The start object is the object itself. If not ON it the the result will be NULL*/
lv_obj_t * obj_on = indev_search_obj(proc, proc->act_obj);
if(obj_on == proc->act_obj) proc->act_obj->signal_func(proc->act_obj, LV_SIGNAL_RELEASED, indev_act);
else proc->act_obj->signal_func(proc->act_obj, LV_SIGNAL_PRESS_LOST, indev_act);
}
/* The simple case: `act_obj` was not protected against press lost.
* If it is already not pressed then was handled in `indev_proc_press`*/
else {
proc->act_obj->signal_func(proc->act_obj, LV_SIGNAL_RELEASED, indev_act);
}
if(proc->reset_query != 0) return;
/*Handle click focus*/
#if USE_LV_GROUP
/*Edit mode is not used by POINTER devices. So leave edit mode if we are in it*/
lv_group_t * act_g = lv_obj_get_group(proc->act_obj);
if(lv_group_get_editing(act_g)) {
lv_group_set_editing(act_g, false);
}
/*Check, if the parent is in a group focus on it.*/
if(lv_obj_is_protected(proc->act_obj, LV_PROTECT_CLICK_FOCUS) == false) { /*Respect the click protection*/
lv_group_t * g = lv_obj_get_group(proc->act_obj);
lv_obj_t * parent = proc->act_obj;
while(g == NULL) {
parent = lv_obj_get_parent(parent);
if(parent == NULL) break;
if(lv_obj_is_protected(parent, LV_PROTECT_CLICK_FOCUS)) { /*Ignore is the protected against click focus*/
parent = NULL;
break;
}
g = lv_obj_get_group(parent);
}
if(g != NULL && parent != NULL)
if(lv_group_get_click_focus(g)) {
lv_group_focus_obj(parent);
}
}
#endif
if(proc->reset_query != 0) return;
proc->act_obj = NULL;
proc->pr_timestamp = 0;
proc->longpr_rep_timestamp = 0;
}
/*The reset can be set in the signal function.
* In case of reset query ignore the remaining parts.*/
if(proc->last_obj != NULL && proc->reset_query == 0) {
indev_drag_throw(proc);
if(proc->reset_query != 0) return;
}
}
/**
* Process a new point from LV_INDEV_TYPE_BUTTON input device
* @param i pointer to an input device
* @param data pointer to the data read from the input device
* Reset input device if a reset query has been sent to it
* @param indev pointer to an input device
*/
static void indev_proc_reset_query_handler(lv_indev_t * indev)
{
if(indev->proc.reset_query) {
indev->proc.act_obj = NULL;
indev->proc.last_obj = NULL;
indev->proc.drag_range_out = 0;
indev->proc.drag_in_prog = 0;
indev->proc.long_pr_sent = 0;
indev->proc.pr_timestamp = 0;
indev->proc.longpr_rep_timestamp = 0;
indev->proc.drag_sum.x = 0;
indev->proc.drag_sum.y = 0;
indev->proc.reset_query = 0;
}
}
/**
* Search the most top, clickable object on the last point of an input device
* @param proc pointer to the `lv_indev_proc_t` part of the input device
* @param obj pointer to a start object, typically the screen
* @return pointer to the found object or NULL if there was no suitable object
*/
static lv_obj_t * indev_search_obj(const lv_indev_proc_t * proc, lv_obj_t * obj)
{
lv_obj_t * found_p = NULL;
/*If the point is on this object*/
/*Check its children too*/
if(lv_area_is_point_on(&obj->coords, &proc->act_point)) {
lv_obj_t * i;
LL_READ(obj->child_ll, i) {
found_p = indev_search_obj(proc, i);
/*If a child was found then break*/
if(found_p != NULL) {
break;
}
}
/*If then the children was not ok, and this obj is clickable
* and it or its parent is not hidden then save this object*/
if(found_p == NULL && lv_obj_get_click(obj) != false) {
lv_obj_t * hidden_i = obj;
while(hidden_i != NULL) {
if(lv_obj_get_hidden(hidden_i) == true) break;
hidden_i = lv_obj_get_parent(hidden_i);
}
/*No parent found with hidden == true*/
if(hidden_i == NULL) found_p = obj;
}
}
return found_p;
}
/**
* Handle the dragging of indev_proc_p->act_obj
* @param indev pointer to a input device state
*/
static void indev_drag(lv_indev_proc_t * state)
{
lv_obj_t * drag_obj = state->act_obj;
/*If drag parent is active check recursively the drag_parent attribute*/
while(lv_obj_get_drag_parent(drag_obj) != false &&
drag_obj != NULL) {
drag_obj = lv_obj_get_parent(drag_obj);
}
if(drag_obj == NULL) return;
if(lv_obj_get_drag(drag_obj) == false) return;
/*Count the movement by drag*/
state->drag_sum.x += state->vect.x;
state->drag_sum.y += state->vect.y;
/*Enough move?*/
if(state->drag_range_out == 0) {
/*If a move is greater then LV_DRAG_LIMIT then begin the drag*/
if(LV_MATH_ABS(state->drag_sum.x) >= LV_INDEV_DRAG_LIMIT ||
LV_MATH_ABS(state->drag_sum.y) >= LV_INDEV_DRAG_LIMIT) {
state->drag_range_out = 1;
}
}
/*If the drag limit is stepped over then handle the dragging*/
if(state->drag_range_out != 0) {
/*Set new position if the vector is not zero*/
if(state->vect.x != 0 ||
state->vect.y != 0) {
/*Get the coordinates of the object and modify them*/
lv_coord_t act_x = lv_obj_get_x(drag_obj);
lv_coord_t act_y = lv_obj_get_y(drag_obj);
uint16_t inv_buf_size = lv_refr_get_buf_size(); /*Get the number of currently invalidated areas*/
lv_coord_t prev_x = drag_obj->coords.x1;
lv_coord_t prev_y = drag_obj->coords.y1;
lv_coord_t prev_par_w = lv_obj_get_width(lv_obj_get_parent(drag_obj));
lv_coord_t prev_par_h = lv_obj_get_height(lv_obj_get_parent(drag_obj));
lv_obj_set_pos(drag_obj, act_x + state->vect.x, act_y + state->vect.y);
/*Set the drag in progress flag if the object is really moved*/
if(drag_obj->coords.x1 != prev_x || drag_obj->coords.y1 != prev_y) {
if(state->drag_range_out != 0) { /*Send the drag begin signal on first move*/
drag_obj->signal_func(drag_obj, LV_SIGNAL_DRAG_BEGIN, indev_act);
if(state->reset_query != 0) return;
}
state->drag_in_prog = 1;
}
/*If the object didn't moved then clear the invalidated areas*/
else {
/*In a special case if the object is moved on a page and
* the scrollable has fit == true and the object is dragged of the page then
* while its coordinate is not changing only the parent's size is reduced */
lv_coord_t act_par_w = lv_obj_get_width(lv_obj_get_parent(drag_obj));
lv_coord_t act_par_h = lv_obj_get_height(lv_obj_get_parent(drag_obj));
if(act_par_w == prev_par_w && act_par_h == prev_par_h) {
uint16_t new_inv_buf_size = lv_refr_get_buf_size();
lv_refr_pop_from_buf(new_inv_buf_size - inv_buf_size);
}
}
}
}
}
/**
* Handle throwing by drag if the drag is ended
* @param indev pointer to an input device state
*/
static void indev_drag_throw(lv_indev_proc_t * state)
{
if(state->drag_in_prog == 0) return;
/*Set new position if the vector is not zero*/
lv_obj_t * drag_obj = state->last_obj;
/*If drag parent is active check recursively the drag_parent attribute*/
while(lv_obj_get_drag_parent(drag_obj) != false &&
drag_obj != NULL) {
drag_obj = lv_obj_get_parent(drag_obj);
}
if(drag_obj == NULL) return;
/*Return if the drag throw is not enabled*/
if(lv_obj_get_drag_throw(drag_obj) == false) {
state->drag_in_prog = 0;
drag_obj->signal_func(drag_obj, LV_SIGNAL_DRAG_END, indev_act);
return;
}
/*Reduce the vectors*/
state->vect.x = state->vect.x * (100 - LV_INDEV_DRAG_THROW) / 100;
state->vect.y = state->vect.y * (100 - LV_INDEV_DRAG_THROW) / 100;
if(state->vect.x != 0 ||
state->vect.y != 0) {
/*Get the coordinates and modify them*/
lv_area_t coords_ori;
lv_obj_get_coords(drag_obj, &coords_ori);
lv_coord_t act_x = lv_obj_get_x(drag_obj) + state->vect.x;
lv_coord_t act_y = lv_obj_get_y(drag_obj) + state->vect.y;
lv_obj_set_pos(drag_obj, act_x, act_y);
lv_area_t coord_new;
lv_obj_get_coords(drag_obj, &coord_new);
/*If non of the coordinates are changed then do not continue throwing*/
if((coords_ori.x1 == coord_new.x1 || state->vect.x == 0) &&
(coords_ori.y1 == coord_new.y1 || state->vect.y == 0)) {
state->drag_in_prog = 0;
state->vect.x = 0;
state->vect.y = 0;
drag_obj->signal_func(drag_obj, LV_SIGNAL_DRAG_END, indev_act);
}
}
/*If the vectors become 0 -> drag_in_prog = 0 and send a drag end signal*/
else {
state->drag_in_prog = 0;
drag_obj->signal_func(drag_obj, LV_SIGNAL_DRAG_END, indev_act);
}
}
#endif
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