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rockbox/apps/menu.c
Markus Braun 000c2db035 Added scrollbar to tree view and menus. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@2084 a1c6a512-1295-4272-9138-f99709370657
2002-08-30 13:49:32 +00:00

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 Robert E. Hak
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdbool.h>
#include "lcd.h"
#include "menu.h"
#include "button.h"
#include "kernel.h"
#include "debug.h"
#include "usb.h"
#include "panic.h"
#include "settings.h"
#include "status.h"
#ifdef HAVE_LCD_BITMAP
#include "icons.h"
#include "widgets.h"
#endif
#ifdef LOADABLE_FONTS
#include "ajf.h"
#endif
struct menu {
int top;
int cursor;
struct menu_items* items;
int itemcount;
};
#define MAX_MENUS 4
#ifdef HAVE_LCD_BITMAP
#define MARGIN_X (global_settings.scrollbar ? SCROLLBAR_WIDTH : 0) + CURSOR_WIDTH /* X pixel margin */
#define MARGIN_Y (global_settings.statusbar ? STATUSBAR_HEIGHT : 0) /* Y pixel margin */
#define LINE_X 0 /* X position the entry-list starts at */
#define LINE_Y (global_settings.statusbar ? 1 : 0) /* Y position the entry-list starts at */
#define LINE_HEIGTH 8 /* pixels for each text line */
#define MENU_LINES (LCD_HEIGHT / LINE_HEIGTH - LINE_Y)
#define CURSOR_X (global_settings.scrollbar ? 1 : 0)
#define CURSOR_Y 0 /* the cursor is not positioned in regard to
the margins, so this is the amount of lines
we add to the cursor Y position to position
it on a line */
#define CURSOR_WIDTH 4
#define SCROLLBAR_X 0
#define SCROLLBAR_Y lcd_getymargin()
#define SCROLLBAR_WIDTH 6
#else /* HAVE_LCD_BITMAP */
#define LINE_X 0 /* X position the entry-list starts at */
#define MENU_LINES 2
#define CURSOR_X 0
#define CURSOR_Y 0 /* not really used for players */
#endif /* HAVE_LCD_BITMAP */
#ifdef HAVE_NEW_CHARCELL_LCD
#define CURSOR_CHAR "\x7e"
#else
#define CURSOR_CHAR "\x89"
#endif
static struct menu menus[MAX_MENUS];
static bool inuse[MAX_MENUS] = { false };
/* count in letter posistions, NOT pixels */
void put_cursorxy(int x, int y, bool on)
{
#ifdef HAVE_LCD_BITMAP
#ifdef LOADABLE_FONTS
int fh;
unsigned char* font = lcd_getcurrentldfont();
fh = ajf_get_fontheight(font);
#else
int fh = 8;
#endif
#endif
/* place the cursor */
if(on) {
#ifdef HAVE_LCD_BITMAP
lcd_bitmap ( bitmap_icons_6x8[Cursor],
x*6, y*fh + lcd_getymargin(), 4, 8, true);
#elif defined(SIMULATOR)
/* player simulator */
unsigned char cursor[] = { 0x7f, 0x3e, 0x1c, 0x08 };
lcd_bitmap ( cursor, x*6, 12+y*16, 4, 8, true);
#else
lcd_puts(x, y, CURSOR_CHAR);
#endif
}
else {
#if defined(HAVE_LCD_BITMAP)
/* I use xy here since it needs to disregard the margins */
lcd_clearrect (x*6, y*fh + lcd_getymargin(), 4, 8);
#elif defined(SIMULATOR)
/* player simulator in action */
lcd_clearrect (x*6, 12+y*16, 4, 8);
#else
lcd_puts(x, y, " ");
#endif
}
}
static void menu_draw(int m)
{
int i = 0;
#ifdef LOADABLE_FONTS
int menu_lines;
int fh;
unsigned char* font = lcd_getcurrentldfont();
fh = ajf_get_fontheight(font);
if (global_settings.statusbar)
menu_lines = (LCD_HEIGHT - STATUSBAR_HEIGHT) / fh;
else
menu_lines = LCD_HEIGHT/fh;
#else
int menu_lines = MENU_LINES;
#endif
lcd_scroll_pause(); /* halt scroll first... */
lcd_clear_display(); /* ...then clean the screen */
#ifdef HAVE_LCD_BITMAP
lcd_setmargins(MARGIN_X,MARGIN_Y); /* leave room for cursor and icon */
lcd_setfont(0);
#endif
/* correct cursor pos if out of screen */
if (menus[m].cursor - menus[m].top >= menu_lines)
menus[m].top++;
for (i = menus[m].top;
(i < menus[m].itemcount) && (i<menus[m].top+menu_lines);
i++) {
if((menus[m].cursor - menus[m].top)==(i-menus[m].top))
lcd_puts_scroll(LINE_X, i-menus[m].top, menus[m].items[i].desc);
else
lcd_puts(LINE_X, i-menus[m].top, menus[m].items[i].desc);
}
/* place the cursor */
put_cursorxy(CURSOR_X, menus[m].cursor - menus[m].top, true);
#ifdef HAVE_LCD_BITMAP
if (global_settings.scrollbar)
scrollbar(SCROLLBAR_X, SCROLLBAR_Y, SCROLLBAR_WIDTH - 1,
LCD_HEIGHT - SCROLLBAR_Y, menus[m].itemcount, menus[m].top,
menus[m].top + menu_lines, VERTICAL);
#endif
status_draw();
lcd_update();
}
/*
* Move the cursor to a particular id,
* target: where you want it to be
*/
static void put_cursor(int m, int target)
{
bool do_update = true;
#ifdef LOADABLE_FONTS
int menu_lines;
int fh;
unsigned char* font = lcd_getcurrentldfont();
fh = ajf_get_fontheight(font);
if (global_settings.statusbar)
menu_lines = (LCD_HEIGHT-STATUSBAR_HEIGHT)/fh;
else
menu_lines = LCD_HEIGHT/fh;
#else
int menu_lines = MENU_LINES;
#endif
put_cursorxy(CURSOR_X, menus[m].cursor - menus[m].top, false);
menus[m].cursor = target;
menu_draw(m);
if ( target < menus[m].top ) {
menus[m].top--;
menu_draw(m);
do_update = false;
}
else if ( target-menus[m].top > menu_lines-1 ) {
menus[m].top++;
menu_draw(m);
do_update = false;
}
if (do_update) {
put_cursorxy(CURSOR_X, menus[m].cursor - menus[m].top, true);
lcd_update();
}
}
int menu_init(struct menu_items* mitems, int count)
{
int i;
for ( i=0; i<MAX_MENUS; i++ ) {
if ( !inuse[i] ) {
inuse[i] = true;
break;
}
}
if ( i == MAX_MENUS ) {
DEBUGF("Out of menus!\n");
return -1;
}
menus[i].items = mitems;
menus[i].itemcount = count;
menus[i].top = 0;
menus[i].cursor = 0;
return i;
}
void menu_exit(int m)
{
inuse[m] = false;
}
Menu menu_run(int m)
{
#ifndef SIMULATOR
#ifdef HAVE_LCD_BITMAP
bool laststate;
#endif
#endif
Menu result = MENU_OK;
menu_draw(m);
while(1) {
switch( button_get_w_tmo(HZ/2) ) {
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_UP:
case BUTTON_UP | BUTTON_REPEAT:
#else
case BUTTON_LEFT:
case BUTTON_LEFT | BUTTON_REPEAT:
#endif
if (menus[m].cursor) {
/* move up */
put_cursor(m, menus[m].cursor-1);
}
break;
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_DOWN:
case BUTTON_DOWN | BUTTON_REPEAT:
#else
case BUTTON_RIGHT:
case BUTTON_RIGHT | BUTTON_REPEAT:
#endif
if (menus[m].cursor < menus[m].itemcount-1) {
/* move down */
put_cursor(m, menus[m].cursor+1);
}
break;
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_RIGHT:
#endif
case BUTTON_PLAY:
/* Erase current display state */
lcd_scroll_pause(); /* pause is better than stop when
are gonna clear the screen anyway */
lcd_clear_display();
/* if a child returns that the contents is changed, we
must remember this, even if we perhaps invoke other
children too before returning back */
if(MENU_DISK_CHANGED ==
menus[m].items[menus[m].cursor].function())
result = MENU_DISK_CHANGED;
/* Return to previous display state */
menu_draw(m);
break;
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_LEFT:
case BUTTON_F1:
#else
case BUTTON_STOP:
case BUTTON_MENU:
#endif
lcd_stop_scroll();
return result;
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_F3: {
#ifdef HAVE_LCD_BITMAP
unsigned char state;
state = global_settings.statusbar << 1 | global_settings.scrollbar;
state = (state + 1) % 4;
global_settings.statusbar = state >> 1;
global_settings.scrollbar = state & 0x1;
settings_save();
menu_draw(m);
#endif
}
break;
#endif
#ifndef SIMULATOR
case SYS_USB_CONNECTED:
#ifdef HAVE_LCD_BITMAP
laststate = statusbar(false);
#endif
usb_acknowledge(SYS_USB_CONNECTED_ACK);
usb_wait_for_disconnect(&button_queue);
#ifdef HAVE_LCD_BITMAP
statusbar(laststate);
#else
lcd_icon(ICON_PARAM, true);
#endif
menu_draw(m);
result = MENU_DISK_CHANGED;
break;
#endif
default:
break;
}
status_draw();
lcd_update();
}
return result;
}
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