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#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "eve.h"
#include "eve_kbd.h"
#include "screen/screen.h"
#include "screen/window.h"
#include "screen/page.h"
#include "screen/font.h"
#include "label.h"
#include "widget.h"
#include "str.h"
#define CH_BS 0x08
#define CH_DEL 0x7f
#define CH_EOF 0x1a
#define CH_CTRLX 0x18
#define CH_CTRLC 0x03
#define CH_CTRLV 0x16
#define STRW_TMODE_CURSOR 1
#define STRW_TMODE_SCROLL_X 2
#define STRW_TMODE_SCROLL_Y 3
#define CHAR_VALID_INPUT(c) ((c >= 0x20) && (c < 0x7f))
void eve_strw_init(EVEStrWidget *widget, EVERect *g, EVEFont *font, char *str, uint16_t str_size) {
EVEWidget *_widget = &widget->w;
memset(widget, 0, sizeof(EVEStrWidget));
eve_widget_init(_widget, EVE_WIDGET_TYPE_STR, g, eve_strw_touch, eve_strw_draw, eve_strw_putc);
widget->font = font;
widget->str = str;
widget->str_size = str_size;
}
static EVEStrCursor *cursor_prox(EVEStrWidget *widget, EVEStrCursor *cursor, EVEPage *page, EVETouch *t, short *dx) {
EVEWidget *_widget = &widget->w;
int x = eve_page_x(page, t->x0) - _widget->g.x + widget->str_g.x;
int _dx;
*dx = cursor->x - x;
_dx = *dx < 0 ? -(*dx) : *dx;
if (_dx <= widget->font->w) return cursor;
return NULL;
}
int eve_strw_touch(EVEWidget *_widget, EVEPage *page, uint8_t tag0, int touch_idx, EVERect *focus) {
EVEStrWidget *widget = (EVEStrWidget *)_widget;
EVETouch *t;
uint16_t evt;
if (touch_idx > 0) return 0;
t = eve_touch_evt(tag0, touch_idx, widget->tag, 1, &evt);
if (t && evt) {
EVEStrCursor *t_cursor = NULL;
short dx;
char f = 0;
if (evt & (EVE_TOUCH_ETYPE_LPRESS | EVE_TOUCH_ETYPE_TRACK_START)) {
if (widget->cursor2.on) {
t_cursor = cursor_prox(widget, &widget->cursor2, page, t, &dx);
}
if ((t_cursor == NULL) && widget->cursor1.on) {
t_cursor = cursor_prox(widget, &widget->cursor1, page, t, &dx);
}
if (evt & EVE_TOUCH_ETYPE_TRACK_START) {
widget->track.cursor = t_cursor;
if (t_cursor) {
widget->track.mode = STRW_TMODE_CURSOR;
widget->track.dx = dx;
} else if (t->eevt & EVE_TOUCH_EETYPE_TRACK_X) {
widget->track.mode = STRW_TMODE_SCROLL_X;
} else if (t->eevt & EVE_TOUCH_EETYPE_TRACK_Y) {
widget->track.mode = STRW_TMODE_SCROLL_Y;
}
}
}
switch (widget->track.mode) {
case STRW_TMODE_SCROLL_Y:
if (page && page->handle_evt) page->handle_evt(page, _widget, t, evt, tag0, touch_idx);
break;
case STRW_TMODE_SCROLL_X:
if (evt & EVE_TOUCH_ETYPE_TRACK_START) {
widget->str_g.x0 = widget->str_g.x;
}
if (evt & EVE_TOUCH_ETYPE_TRACK) {
int x = widget->str_g.x0 + t->x0 - t->x;
int w1 = widget->w.g.w - widget->font->w;
if (x < 0) x = 0;
if (x > widget->str_g.w - w1) x = widget->str_g.w - w1;
widget->str_g.x = x;
}
break;
case STRW_TMODE_CURSOR:
if (evt & EVE_TOUCH_ETYPE_TRACK) eve_strw_cursor_set(widget, widget->track.cursor, eve_page_x(page, t->x) + widget->track.dx);
break;
default:
if (evt & EVE_TOUCH_ETYPE_LPRESS) {
if (widget->cursor2.on) {
// copy
} else if (widget->cursor1.on) {
if (t_cursor) {
// paste
} else {
eve_strw_cursor_set(widget, &widget->cursor2, eve_page_x(page, t->x));
}
} else {
// select
}
}
if ((evt & EVE_TOUCH_ETYPE_POINT_UP) && !(t->eevt & EVE_TOUCH_EETYPE_LPRESS)) {
eve_strw_cursor_set(widget, &widget->cursor1, eve_page_x(page, t->x));
if (widget->cursor2.on) eve_strw_cursor_clear(widget, &widget->cursor2);
f = 1;
}
break;
}
if (evt & EVE_TOUCH_ETYPE_TRACK_STOP) {
widget->track.mode = 0;
widget->track.cursor = NULL;
widget->track.dx = 0;
}
if (f && focus) {
focus->x = _widget->g.x;
focus->y = _widget->g.y;
focus->w = _widget->g.w;
focus->h = 2 * widget->font->h;
}
return 1;
}
return 0;
}
uint8_t eve_strw_draw(EVEWidget *_widget, EVEPage *page, uint8_t tag0) {
EVEStrWidget *widget = (EVEStrWidget *)_widget;
int16_t x = _widget->g.x - widget->str_g.x;
char cut = widget->str_g.x || (widget->str_g.w > _widget->g.w);
widget->tag = tag0;
if (tag0 != EVE_TAG_NOTAG) {
eve_cmd_dl(TAG(tag0));
tag0++;
}
if (cut && page) {
int16_t x = eve_page_scrx(page, _widget->g.x);
int16_t y = eve_page_scrx(page, _widget->g.y);
if (x < 0) x = 0;
if (y < 0) y = 0;
eve_cmd_dl(SAVE_CONTEXT());
eve_cmd_dl(SCISSOR_XY(x, y));
eve_cmd_dl(SCISSOR_SIZE(_widget->g.w, _widget->g.h));
}
eve_cmd(CMD_TEXT, "hhhhs", x, _widget->g.y, widget->font->id, 0, widget->str);
if (cut && page) {
eve_cmd_dl(RESTORE_CONTEXT());
}
return tag0;
}
void eve_strw_putc(void *_page, int c) {
EVEPage *page = _page;
EVEStrWidget *widget = (EVEStrWidget *)eve_page_get_focus(page);
EVEStrCursor *cursor1 = &widget->cursor1;
EVEStrCursor *cursor2 = &widget->cursor2;
char *str;
int w0 = widget->font->w;
int w1 = widget->w.g.w - widget->font->w;
if (c == CH_EOF) {
if (cursor1->on) eve_strw_cursor_clear(widget, cursor1);
if (cursor2->on) eve_strw_cursor_clear(widget, cursor2);
return;
}
if (cursor2->on) {
EVEStrCursor *c1;
EVEStrCursor *c2;
char *clipb = NULL;
int ins_c = 0, del_c = 0;
int ins_ch_w = 0, del_ch_w = 0;
if (cursor1->ch <= cursor2->ch) {
c1 = cursor1;
c2 = cursor2;
} else {
c1 = cursor2;
c2 = cursor1;
}
str = widget->str + c1->ch;
del_c = c2->ch - c1->ch;
del_ch_w = eve_font_bufw(widget->font, str, del_c);
if ((c == CH_CTRLX) || (c == CH_CTRLC)) {
// eve_clipb_push(str, del_c);
if (c == CH_CTRLC) return;
}
if (CHAR_VALID_INPUT(c) && (widget->str_len < widget->str_size + del_c - 1)) {
ins_c = 1;
ins_ch_w = widget->font->w_ch[c];
} else if (c == CH_CTRLV) {
// clipb = eve_clipb_pop();
ins_c = clipb ? strlen(clipb) : 0;
if (ins_c) {
if (widget->str_len >= widget->str_size - (ins_c - del_c)) ins_c = widget->str_size - widget->str_len + del_c - 1;
ins_ch_w = eve_font_bufw(widget->font, clipb, ins_c);
}
}
if (ins_c != del_c) memmove(str + ins_c, str + del_c, widget->str_len - c2->ch + 1);
if (ins_c) {
if (c == CH_CTRLV) {
memcpy(str, clipb, ins_c);
} else {
*str = c;
}
c1->ch += ins_c;
c1->x += ins_ch_w;
}
widget->str_len += ins_c - del_c;
widget->str_g.w += ins_ch_w - del_ch_w;
if (c1 == cursor2) widget->cursor1 = widget->cursor2;
eve_strw_cursor_clear(widget, cursor2);
} else if (cursor1->on) {
uint8_t ch_w;
str = widget->str + cursor1->ch;
switch (c) {
case CH_BS:
if (cursor1->ch > 0) {
ch_w = widget->font->w_ch[*(str - 1)];
memmove(str - 1, str, widget->str_len - cursor1->ch + 1);
widget->str_len--;
widget->str_g.w -= ch_w;
cursor1->ch--;
cursor1->x -= ch_w;
}
break;
case CH_DEL:
if (cursor1->ch < widget->str_len) {
ch_w = widget->font->w_ch[*str];
memmove(str, str + 1, widget->str_len - cursor1->ch);
widget->str_len--;
widget->str_g.w -= ch_w;
}
break;
default:
if (CHAR_VALID_INPUT(c) && (widget->str_len < widget->str_size - 1)) {
ch_w = widget->font->w_ch[c];
memmove(str + 1, str, widget->str_len - cursor1->ch + 1);
*str = c;
widget->str_len++;
widget->str_g.w += ch_w;
cursor1->ch++;
cursor1->x += ch_w;
}
break;
}
}
if (cursor1->x - widget->str_g.x < w0) widget->str_g.x = cursor1->x - w0 > 0 ? cursor1->x - w0 : 0;
if (cursor1->x - widget->str_g.x > w1) widget->str_g.x = cursor1->x - w1;
}
void eve_strw_cursor_set(EVEStrWidget *widget, EVEStrCursor *cursor, int16_t x) {
int i;
uint16_t _x, _d;
EVEWidget *_widget = &widget->w;
x = x - _widget->g.x + widget->str_g.x;
_x = 0;
_d = x;
for (i=0; i<widget->str_len; i++) {
_x += widget->font->w_ch[widget->str[i]];
if (_x >= x) {
if (_x - x < _d) {
i++;
} else {
_x -= widget->font->w_ch[widget->str[i]];
}
break;
} else {
_d = x - _x;
}
}
cursor->x = _x;
cursor->ch = i;
cursor->on = 1;
}
void eve_strw_cursor_clear(EVEStrWidget *widget, EVEStrCursor *cursor) {
cursor->on = 0;
}
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