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rockbox/apps/menu.c
Björn Stenberg 942bc9449e Only redraw the status line when info actually changed. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3588 a1c6a512-1295-4272-9138-f99709370657
2003-04-23 11:26:25 +00:00

355 lines
9.1 KiB
C
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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 "hwcompat.h"
#include "lcd.h"
#include "font.h"
#include "backlight.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"
#include "screens.h"
#ifdef HAVE_LCD_BITMAP
#include "icons.h"
#include "widgets.h"
#endif
struct menu {
int top;
int cursor;
struct menu_items* items;
int itemcount;
};
#define MAX_MENUS 4
#ifdef HAVE_LCD_BITMAP
/* pixel margins */
#define MARGIN_X (global_settings.scrollbar && \
menu_lines < menus[m].itemcount ? SCROLLBAR_WIDTH : 0) +\
CURSOR_WIDTH
#define MARGIN_Y (global_settings.statusbar ? STATUSBAR_HEIGHT : 0)
/* position the entry-list starts at */
#define LINE_X 0
#define LINE_Y (global_settings.statusbar ? 1 : 0)
#define CURSOR_X (global_settings.scrollbar && \
menu_lines < menus[m].itemcount ? 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 (global_settings.invert_cursor ? 0 : 4)
#define SCROLLBAR_X 0
#define SCROLLBAR_Y lcd_getymargin()
#define SCROLLBAR_WIDTH 6
#else /* HAVE_LCD_BITMAP */
#define LINE_X 1 /* 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 */
#define CURSOR_CHAR 0x92
static struct menu menus[MAX_MENUS];
static bool inuse[MAX_MENUS] = { false };
/* count in letter positions, NOT pixels */
void put_cursorxy(int x, int y, bool on)
{
#ifdef HAVE_LCD_BITMAP
int fh, fw;
int xpos, ypos;
if (global_settings.invert_cursor)
return;
lcd_getstringsize("A", &fw, &fh);
xpos = x*6;
ypos = y*fh + lcd_getymargin();
if ( fh > 8 )
ypos += (fh - 8) / 2;
#endif
/* place the cursor */
if(on) {
#ifdef HAVE_LCD_BITMAP
lcd_bitmap ( bitmap_icons_6x8[Cursor],
xpos, ypos, 4, 8, true);
#else
lcd_putc(x, y, CURSOR_CHAR);
#endif
}
else {
#if defined(HAVE_LCD_BITMAP)
/* I use xy here since it needs to disregard the margins */
lcd_clearrect (xpos, ypos, 4, 8);
#else
lcd_putc(x, y, ' ');
#endif
}
}
static void menu_draw(int m)
{
int i = 0;
#ifdef HAVE_LCD_BITMAP
int fw, fh;
int menu_lines;
lcd_setfont(FONT_UI);
lcd_getstringsize("A", &fw, &fh);
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_clear_display(); /* ...then clean the screen */
#ifdef HAVE_LCD_BITMAP
lcd_setmargins(MARGIN_X,MARGIN_Y); /* leave room for cursor and icon */
#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))
#ifdef HAVE_LCD_BITMAP
if (global_settings.invert_cursor)
lcd_puts_scroll_style(LINE_X, i-menus[m].top,
menus[m].items[i].desc, STYLE_INVERT);
else
#endif
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 && menus[m].itemcount > menu_lines)
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(true);
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 HAVE_LCD_BITMAP
int fw, fh;
int menu_lines;
lcd_getstringsize("A", &fw, &fh);
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 && !global_settings.invert_cursor) {
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;
}
int menu_show(int m)
{
bool exit = false;
menu_draw(m);
while (!exit) {
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);
}
else {
/* move to bottom */
#ifdef HAVE_RECORDER_KEYPAD
menus[m].top = menus[m].itemcount-9;
#else
menus[m].top = menus[m].itemcount-3;
#endif
if (menus[m].top < 0)
menus[m].top = 0;
menus[m].cursor = menus[m].itemcount-1;
put_cursor(m, menus[m].itemcount-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);
}
else {
/* move to top */
menus[m].top = 0;
menus[m].cursor = 0;
put_cursor(m, 0);
}
break;
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_RIGHT:
#endif
case BUTTON_PLAY:
/* Erase current display state */
lcd_clear_display();
return menus[m].cursor;
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_LEFT:
case BUTTON_F1:
#else
case BUTTON_STOP:
case BUTTON_MENU:
#endif
lcd_stop_scroll();
exit = true;
break;
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_F2:
if (f2_screen())
return MENU_ATTACHED_USB;
menu_draw(m);
break;
case BUTTON_F3:
if (f3_screen())
return MENU_ATTACHED_USB;
menu_draw(m);
break;
#endif
case SYS_USB_CONNECTED:
usb_screen();
#ifdef HAVE_LCD_CHARCELLS
status_set_param(false);
#endif
return MENU_ATTACHED_USB;
}
status_draw(false);
}
return MENU_SELECTED_EXIT;
}
bool menu_run(int m)
{
bool stop=false;
while (!stop) {
int result=menu_show(m);
if (result == MENU_SELECTED_EXIT)
return false;
else if (result == MENU_ATTACHED_USB)
return true;
if (menus[m].items[menus[m].cursor].function()) {
return true;
}
}
return false;
}
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