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mpv/libmenu/menu_list.c

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/*
* This file is part of MPlayer.
*
* MPlayer 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 2 of the License, or
* (at your option) any later version.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include "config.h"
#include "libmpcodecs/img_format.h"
#include "libmpcodecs/mp_image.h"
#include "m_struct.h"
#include "menu.h"
#include "libvo/font_load.h"
#include "osdep/keycodes.h"
#define IMPL 1
#include "menu_list.h"
extern double menu_mouse_x;
extern double menu_mouse_y;
extern int menu_mouse_pos_updated;
static int mouse_x;
static int mouse_y;
static int selection_x;
static int selection_y;
static int selection_w;
static int selection_h;
#define mpriv (menu->priv)
void menu_list_draw(menu_t* menu,mp_image_t* mpi) {
int x = mpriv->x;
int y = mpriv->y;
int i;
int h = mpriv->h;
int w = mpriv->w;
int dh = 0,dw = 0;
int bx, dx, dy = 0;
int need_h = 0,need_w = 0,ptr_l,sidx = 0;
int th,count = 0;
int bg_w;
int line_h;
list_entry_t* m;
if(mpriv->count < 1)
return;
if(h <= 0) h = mpi->height;
if(w <= 0) w = mpi->width;
dh = h - 2*mpriv->minb;
dw = w - 2*mpriv->minb;
ptr_l = mpriv->ptr ? menu_text_length(mpriv->ptr) : 0;
// mpi is too small
if(h - vo_font->height <= 0 || w - ptr_l <= 0 || dw <= 0 || dh <= 0)
return;
line_h = mpriv->vspace + vo_font->height;
th = menu_text_num_lines(mpriv->title,dw) * line_h + mpriv->vspace;
// the selected item is hidden, find a visible one
if(mpriv->current->hide) {
// try the next
for(m = mpriv->current->next ; m ; m = m->next)
if(!m->hide) break;
if(!m) // or the previous
for(m = mpriv->current->prev ; m ; m = m->prev)
if(!m->hide) break;
if(m) mpriv->current = m;
else ptr_l = 0;
}
for(i = 0, m = mpriv->menu ; m ; m = m->next, i++) {
int ll;
if(m->hide) continue;
ll = menu_text_length(m->txt);
if(ptr_l + ll > need_w) need_w = ptr_l + ll;
if(m == mpriv->current) sidx = i;
count++;
}
if(need_w > dw) need_w = dw;
if(x >= 0)
x += mpriv->minb;
if(y > 0)
y += mpriv->minb;
else
y = mpriv->minb;
need_h = count * line_h - mpriv->vspace;
if( need_h + th > dh) {
int start,end;
mpriv->disp_lines = (dh + mpriv->vspace - th) / line_h;
if(mpriv->disp_lines < 4) {
th = 0;
mpriv->disp_lines = (dh + mpriv->vspace) / line_h;
}
// Too smoll
if(mpriv->disp_lines < 1) return;
need_h = mpriv->disp_lines * line_h - mpriv->vspace;
start = sidx - (mpriv->disp_lines/2);
if(start < 0) start = 0;
end = start + mpriv->disp_lines;
if(end > count) {
end = count;
if(end - start < mpriv->disp_lines)
start = end - mpriv->disp_lines < 0 ? 0 : end - mpriv->disp_lines;
}
m = mpriv->menu;
for(i = 0 ; m->next && i < start ; ) {
if(!m->hide) i++;
m = m->next;
}
} else {
m = mpriv->menu;
mpriv->disp_lines = count;
}
bg_w = need_w+2*mpriv->minb;
if(th > 0) {
int tw,th2;
menu_text_size(mpriv->title,dw,mpriv->vspace,1,&tw,&th2);
if(mpriv->title_bg >= 0) {
if(tw+2*mpriv->minb > bg_w) bg_w = tw+2*mpriv->minb;
menu_draw_box(mpi,mpriv->title_bg,mpriv->title_bg_alpha,
x < 0 ? (mpi->w-bg_w)/2 : x-mpriv->minb,dy+y-mpriv->vspace/2,bg_w,th);
}
menu_draw_text_full(mpi,mpriv->title,
x < 0 ? mpi->w / 2 : x,
dy+y, x < 0 ? dw : (tw > need_w ? tw : need_w), 0,
mpriv->vspace,1,
MENU_TEXT_TOP|MENU_TEXT_HCENTER,
MENU_TEXT_TOP|(x < 0 ? MENU_TEXT_HCENTER :MENU_TEXT_LEFT));
dy += th;
}
dx = x < 0 ? (mpi->w - need_w) / 2 : x;
bx = x < 0 ? (mpi->w - bg_w) / 2 : x - mpriv->minb;
// If mouse moved, try to update selected menu item by the mouse position.
if (menu_mouse_pos_updated) {
mouse_x = menu_mouse_x * mpi->width;
mouse_y = menu_mouse_y * mpi->height;
if (mouse_x >= bx && mouse_x < bx + bg_w) {
int by = dy + y - mpriv->vspace / 2;
int max_by = dh + y + mpriv->vspace / 2;
if (mouse_y >= by && mouse_y < max_by) {
int cur_no = (mouse_y - by) / line_h;
list_entry_t* e = m;
for (i = 0; e != NULL; e = e->next) {
if (e->hide) continue;
if (i == cur_no) {
mpriv->current = e;
break;
}
++i;
}
}
}
menu_mouse_pos_updated = 0;
}
for( ; m != NULL && dy + vo_font->height < dh ; m = m->next ) {
if(m->hide) continue;
if(m == mpriv->current) {
// Record rectangle of current selection box.
selection_x = bx;
selection_y = dy + y - mpriv->vspace / 2;
selection_w = bg_w;
selection_h = line_h;
if(mpriv->ptr_bg >= 0)
menu_draw_box(mpi,mpriv->ptr_bg,mpriv->ptr_bg_alpha,
bx, dy + y - mpriv->vspace / 2,
bg_w, line_h);
if(ptr_l > 0)
menu_draw_text_full(mpi,mpriv->ptr,
dx,
dy+y,dw,dh - dy,
mpriv->vspace,0,
MENU_TEXT_TOP|MENU_TEXT_LEFT,
MENU_TEXT_TOP|MENU_TEXT_LEFT);
} else if(mpriv->item_bg >= 0)
menu_draw_box(mpi,mpriv->item_bg,mpriv->item_bg_alpha,
bx, dy + y - mpriv->vspace / 2,
bg_w, line_h);
menu_draw_text_full(mpi,m->txt,
dx + ptr_l,
dy+y,dw-ptr_l,dh - dy,
mpriv->vspace,0,
MENU_TEXT_TOP|MENU_TEXT_LEFT,
MENU_TEXT_TOP|MENU_TEXT_LEFT);
dy += line_h;
}
}
void menu_list_read_cmd(menu_t* menu,int cmd) {
list_entry_t* m;
int i;
switch(cmd) {
case MENU_CMD_UP:
while(mpriv->current->prev) {
mpriv->current = mpriv->current->prev;
if(!mpriv->current->hide) return;
}
for( ; mpriv->current->next != NULL ; mpriv->current = mpriv->current->next)
/* NOTHING */;
if(!mpriv->current->hide) return;
while(mpriv->current->prev) {
mpriv->current = mpriv->current->prev;
if(!mpriv->current->hide) return;
}
break;
case MENU_CMD_DOWN:
while(mpriv->current->next) {
mpriv->current = mpriv->current->next;
if(!mpriv->current->hide) return;
}
mpriv->current = mpriv->menu;
if(!mpriv->current->hide) return;
while(mpriv->current->next) {
mpriv->current = mpriv->current->next;
if(!mpriv->current->hide) return;
}
break;
case MENU_CMD_HOME:
mpriv->current = mpriv->menu;
break;
case MENU_CMD_END:
for(m = mpriv->current ; m && m->next ; m = m->next)
/**/;
if(m)
mpriv->current = m;
break;
case MENU_CMD_PAGE_UP:
for(i = 0, m = mpriv->current ; m && m->prev && i < mpriv->disp_lines ; m = m->prev, i++)
/**/;
if(m)
mpriv->current = m;
break;
case MENU_CMD_PAGE_DOWN:
for(i = 0, m = mpriv->current ; m && m->next && i < mpriv->disp_lines ; m = m->next, i++)
/**/;
if(m)
mpriv->current = m;
break;
case MENU_CMD_LEFT:
case MENU_CMD_CANCEL:
menu->show = 0;
menu->cl = 1;
break;
case MENU_CMD_CLICK:
if (mouse_x >= selection_x && mouse_x < selection_x + selection_w &&
mouse_y >= selection_y && mouse_y < selection_y + selection_h)
menu_read_cmd(menu, MENU_CMD_OK);
break;
}
}
int menu_list_jump_to_key(menu_t* menu,int c) {
if(c < 256 && isalnum(c)) {
list_entry_t* e = mpriv->current;
if(e->txt[0] == c) e = e->next;
for( ; e ; e = e->next) {
if(e->txt[0] == c) {
mpriv->current = e;
return 1;
}
}
for(e = mpriv->menu ; e ; e = e->next) {
if(e->txt[0] == c) {
mpriv->current = e;
return 1;
}
}
return 1;
}
return 0;
}
void menu_list_add_entry(menu_t* menu,list_entry_t* entry) {
list_entry_t* l;
mpriv->count++;
if(mpriv->menu == NULL) {
mpriv->menu = mpriv->current = entry;
return;
}
for(l = mpriv->menu ; l->next != NULL ; l = l->next)
/* NOP */;
l->next = entry;
entry->prev = l;
}
void menu_list_init(menu_t* menu) {
if(!mpriv)
mpriv = calloc(1,sizeof(struct menu_priv_s));
}
void menu_list_uninit(menu_t* menu,free_entry_t free_func) {
list_entry_t *i,*j;
if(!free_func) free_func = (free_entry_t)free;
for(i = mpriv->menu ; i != NULL ; ) {
j = i->next;
free_func(i);
i = j;
}
mpriv->menu = mpriv->current = NULL;
}
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