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scroll: add scroll throw

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This commit is contained in:
Gabor Kiss-Vamosi 2020-07-08 12:29:47 +02:00
parent d813bbe5e2
commit 9cfd399fb3
4 changed files with 77 additions and 50 deletions
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98
src/lv_core/lv_indev.c
View File

@ -1259,7 +1259,6 @@ static void indev_drag(lv_indev_proc_t * proc)
if(target_obj == NULL) return;
lv_drag_dir_t dirs = LV_DRAG_DIR_VER; //scrollable ? lv_obj_get_scroll_dir(target_obj) : lv_obj_get_drag_dir(target_obj);
bool just_started = false;
/*Get the coordinates of the object and modify them*/
@ -1379,67 +1378,94 @@ static void indev_drag_throw(lv_indev_proc_t * proc)
{
if(proc->types.pointer.drag_in_prog == 0) return;
lv_obj_t * drag_obj = get_dragged_obj(proc->types.pointer.last_obj);
if(drag_obj == NULL) return;
bool scrollable = true;
/*Get which object to drad/scroll*/
lv_obj_t * target_obj = get_dragged_obj(proc->types.pointer.last_obj);
if(target_obj == NULL) return;
/*Return if the drag throw is not enabled*/
if(lv_obj_get_drag_throw(drag_obj) == false) {
proc->types.pointer.drag_in_prog = 0;
drag_obj->signal_cb(drag_obj, LV_SIGNAL_DRAG_END, indev_act);
if(indev_reset_check(proc)) return;
lv_event_send(drag_obj, LV_EVENT_DRAG_END, NULL);
return;
}
lv_drag_dir_t allowed_dirs = lv_obj_get_drag_dir(drag_obj);
// if(lv_obj_get_drag_throw(target_obj) == false) {
// proc->types.pointer.drag_in_prog = 0;
// target_obj->signal_cb(target_obj, scrollable ? LV_SIGNAL_SCROLL_END : LV_SIGNAL_DRAG_END, indev_act);
// if(indev_reset_check(proc)) return;
//
// lv_event_send(target_obj, LV_EVENT_DRAG_END, NULL);
// return;
// }
/*Reduce the vectors*/
proc->types.pointer.drag_throw_vect.x =
proc->types.pointer.drag_throw_vect.x * (100 - indev_act->driver.drag_throw) / 100;
proc->types.pointer.drag_throw_vect.x * (100 - indev_act->driver.drag_throw) / 30;
proc->types.pointer.drag_throw_vect.y =
proc->types.pointer.drag_throw_vect.y * (100 - indev_act->driver.drag_throw) / 100;
proc->types.pointer.drag_throw_vect.y * (100 - indev_act->driver.drag_throw) / 30;
if(proc->types.pointer.drag_throw_vect.x != 0 || proc->types.pointer.drag_throw_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) + proc->types.pointer.drag_throw_vect.x;
lv_coord_t act_y = lv_obj_get_y(drag_obj) + proc->types.pointer.drag_throw_vect.y;
if(allowed_dirs == LV_DRAG_DIR_BOTH) lv_obj_set_pos(drag_obj, act_x, act_y);
else if(allowed_dirs == LV_DRAG_DIR_HOR) lv_obj_set_x(drag_obj, act_x);
else if(allowed_dirs == LV_DRAG_DIR_VER) lv_obj_set_y(drag_obj, act_y);
else if(allowed_dirs == LV_DRAG_DIR_ONE) {
if(proc->types.pointer.drag_sum.x) lv_obj_set_x(drag_obj, act_x);
else lv_obj_set_y(drag_obj, act_y);
switch(proc->types.pointer.drag_dir) {
case LV_DRAG_DIR_HOR:
proc->types.pointer.drag_throw_vect.y = 0;
break;
case LV_DRAG_DIR_VER:
proc->types.pointer.drag_throw_vect.x = 0;
break;
}
lv_area_t coord_new;
lv_obj_get_coords(drag_obj, &coord_new);
lv_area_t child_box;
lv_obj_get_children_box(target_obj, &child_box);
if((target_obj->scroll.y < 0 && child_box.y2 > target_obj->coords.y2) &&
(proc->types.pointer.drag_throw_vect.x != 0 || proc->types.pointer.drag_throw_vect.y != 0)) {
/*Get the coordinates and modify them*/
if(scrollable) {
if(target_obj->scroll.y + proc->types.pointer.drag_throw_vect.y > 0) {
proc->types.pointer.drag_throw_vect.y = 0;
lv_obj_scroll_to_y(target_obj, 0, LV_ANIM_OFF);
}
if(child_box.y2 + proc->types.pointer.drag_throw_vect.y < target_obj->coords.y2) {
proc->types.pointer.drag_throw_vect.y = 0;
lv_obj_scroll_by(target_obj, 0, -(child_box.y2 - target_obj->coords.y2), LV_ANIM_OFF);
}
lv_obj_scroll_by(target_obj, proc->types.pointer.drag_throw_vect.x, proc->types.pointer.drag_throw_vect.y);
} else {
lv_area_t coords_ori;
lv_obj_get_coords(target_obj, &coords_ori);
lv_coord_t act_x = lv_obj_get_x(target_obj) + proc->types.pointer.drag_throw_vect.x;
lv_coord_t act_y = lv_obj_get_y(target_obj) + proc->types.pointer.drag_throw_vect.y;
lv_obj_set_pos(target_obj, act_x, act_y);
lv_area_t coords_new;
lv_obj_get_coords(target_obj, &coords_new);
/*If non of the coordinates are changed then do not continue throwing*/
if((coords_ori.x1 == coord_new.x1 || proc->types.pointer.drag_throw_vect.x == 0) &&
(coords_ori.y1 == coord_new.y1 || proc->types.pointer.drag_throw_vect.y == 0)) {
if((coords_ori.x1 == coords_new.x1 || proc->types.pointer.drag_throw_vect.x == 0) &&
(coords_ori.y1 == coords_new.y1 || proc->types.pointer.drag_throw_vect.y == 0)) {
proc->types.pointer.drag_in_prog = 0;
proc->types.pointer.vect.x = 0;
proc->types.pointer.vect.y = 0;
proc->types.pointer.drag_throw_vect.x = 0;
proc->types.pointer.drag_throw_vect.y = 0;
drag_obj->signal_cb(drag_obj, LV_SIGNAL_DRAG_END, indev_act);
target_obj->signal_cb(target_obj, LV_SIGNAL_DRAG_END, indev_act);
if(indev_reset_check(proc)) return;
lv_event_send(drag_obj, LV_EVENT_DRAG_END, NULL);
lv_event_send(target_obj, LV_EVENT_DRAG_END, NULL);
if(indev_reset_check(proc)) return;
}
}
}
/*If the types.pointer.vectors become 0 -> types.pointer.drag_in_prog = 0 and send a drag end
signal*/
else {
proc->types.pointer.drag_in_prog = 0;
drag_obj->signal_cb(drag_obj, LV_SIGNAL_DRAG_END, indev_act);
target_obj->signal_cb(target_obj, scrollable ? LV_SIGNAL_SCROLL_END : LV_SIGNAL_DRAG_END, indev_act);
if(indev_reset_check(proc)) return;
lv_event_send(drag_obj, LV_EVENT_DRAG_END, NULL);
lv_event_send(target_obj, LV_EVENT_DRAG_END, NULL);
if(indev_reset_check(proc)) return;
}
}

7
src/lv_core/lv_obj.c
View File

@ -1078,7 +1078,7 @@ void lv_obj_scroll_by_raw(lv_obj_t * obj, lv_coord_t x, lv_coord_t y)
obj->scroll.y += y;
refresh_children_position(obj, x, y);
lv_signal_send(obj, LV_SIGNAL_SCROLLED, NULL);
lv_signal_send(obj, LV_SIGNAL_SCROLL, NULL);
lv_obj_invalidate(obj);
}
/**
@ -3890,10 +3890,10 @@ static lv_res_t lv_obj_signal(lv_obj_t * obj, lv_signal_t sign, void * param)
/*Return 'invalid' if the child change signal is not enabled*/
if(lv_obj_is_protected(obj, LV_PROTECT_CHILD_CHG) != false) res = LV_RES_INV;
}
else if(sign == LV_SIGNAL_SCROLLED) {
else if(sign == LV_SIGNAL_SCROLL) {
}
else if(sign == LV_SIGNAL_PRESS_LOST || sign == LV_SIGNAL_RELEASED) {
else if(sign == LV_SIGNAL_SCROLL_END) {
lv_area_t child_box;
lv_obj_get_children_box(obj, &child_box);
@ -4511,7 +4511,6 @@ static lv_res_t get_scrollbar_area(lv_obj_t * obj, lv_area_t * sbv)
return LV_RES_OK;
}
lv_coord_t sb_y = (rem * (child_box.y2 - obj->coords.y2)) / scroll_h;
printf("overflow: sb_h: %d, y: %d\n", sb_h, sb_y);
sbv->y1 = obj->coords.y1 + sb_y;
sbv->y2 = sbv->y1 + sb_h;

4
src/lv_core/lv_obj.h
View File

@ -122,7 +122,6 @@ enum {
/*General signals*/
LV_SIGNAL_CLEANUP, /**< Object is being deleted */
LV_SIGNAL_CHILD_CHG, /**< Child was removed/added */
LV_SIGNAL_SCROLLED, /**< Object coordinates/size have changed */
LV_SIGNAL_COORD_CHG, /**< Object coordinates/size have changed */
LV_SIGNAL_PARENT_SIZE_CHG, /**< Parent's size has changed */
LV_SIGNAL_STYLE_CHG, /**< Object's style has changed */
@ -140,6 +139,9 @@ enum {
LV_SIGNAL_RELEASED, /**< User pressed object for a short period of time, then released it. Not called if dragged. */
LV_SIGNAL_LONG_PRESS, /**< Object has been pressed for at least `LV_INDEV_LONG_PRESS_TIME`. Not called if dragged.*/
LV_SIGNAL_LONG_PRESS_REP, /**< Called after `LV_INDEV_LONG_PRESS_TIME` in every `LV_INDEV_LONG_PRESS_REP_TIME` ms. Not called if dragged.*/
LV_SIGNAL_SCROLL_BEGIN, /**< The scrolling has just begun */
LV_SIGNAL_SCROLL, /**< The object has been scrolled */
LV_SIGNAL_SCROLL_END, /**< The scrolling has ended */
LV_SIGNAL_DRAG_BEGIN,
LV_SIGNAL_DRAG_THROW_BEGIN,
LV_SIGNAL_DRAG_END,

2
src/lv_core/lv_refr.c
View File

@ -31,7 +31,7 @@
* DEFINES
*********************/
/* Draw translucent random colored areas on the invalidated (redrawn) areas*/
#define MASK_AREA_DEBUG 1
#define MASK_AREA_DEBUG 0
/**********************
* TYPEDEFS