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rockbox/apps/gui/quickscreen.c
Jens Arnold 4dab6235cf The second part of this expression always becomes true before the first part, so the first part is unnecessary. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17907 a1c6a512-1295-4272-9138-f99709370657
2008-07-01 17:45:16 +00:00

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 by Jonathan Gordon
*
* This program 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.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include "config.h"
#include "system.h"
#include "icons.h"
#include "font.h"
#include "kernel.h"
#include "misc.h"
#include "statusbar.h"
#include "action.h"
#include "settings_list.h"
#include "lang.h"
#include "playlist.h"
#include "dsp.h"
#include "viewport.h"
#include "audio.h"
#include "quickscreen.h"
#include "talk.h"
static struct viewport vps[NB_SCREENS][QUICKSCREEN_ITEM_COUNT];
static struct viewport vp_icons[NB_SCREENS];
/* vp_icons will be used like this:
the side icons will be aligned to the top of this vp and to their sides
the bottom icon wil be aligned center and at the bottom of this vp */
#define MIN_LINES 4
#define MAX_NEEDED_LINES 8
#define CENTER_MARGIN 10 /* pixels between the 2 center items minimum */
#define CENTER_ICONAREA_WIDTH (CENTER_MARGIN+8*2)
static void quickscreen_fix_viewports(struct gui_quickscreen *qs,
struct screen *display,
struct viewport *parent)
{
#ifdef HAVE_REMOTE_LCD
int screen = display->screen_type;
#else
const int screen = 0;
#endif
int char_height, i;
int left_width, right_width, bottom_lines = 3;
unsigned char *s;
int nb_lines = viewport_get_nb_lines(parent);
char_height = parent->height/nb_lines;
vp_icons[screen] = *parent;
vps[screen][QUICKSCREEN_BOTTOM] = *parent;
if (nb_lines <= MIN_LINES) /* make the bottom item use 1 line */
bottom_lines = 1;
else
bottom_lines = 2;
vps[screen][QUICKSCREEN_BOTTOM].height = bottom_lines*char_height;
vps[screen][QUICKSCREEN_BOTTOM].y =
parent->y + parent->height - bottom_lines*char_height;
if (nb_lines >= MAX_NEEDED_LINES)
{
vps[screen][QUICKSCREEN_BOTTOM].y -= char_height;
}
/* adjust the left/right items widths to fit the screen nicely */
s = P2STR(ID2P(qs->items[QUICKSCREEN_LEFT]->lang_id));
left_width = display->getstringsize(s, NULL, NULL);
s = P2STR(ID2P(qs->items[QUICKSCREEN_RIGHT]->lang_id));
right_width = display->getstringsize(s, NULL, NULL);
nb_lines -= bottom_lines;
vps[screen][QUICKSCREEN_LEFT] = *parent;
vps[screen][QUICKSCREEN_RIGHT] = *parent;
vps[screen][QUICKSCREEN_LEFT].x = parent->x;
if (nb_lines <= MIN_LINES)
i = 0;
else
i = nb_lines/2;
vps[screen][QUICKSCREEN_LEFT].y = parent->y + (i*char_height);
vps[screen][QUICKSCREEN_RIGHT].y = parent->y + (i*char_height);
if (nb_lines >= 3)
i = 3*char_height;
else
i = nb_lines*char_height;
vps[screen][QUICKSCREEN_LEFT].height = i;
vps[screen][QUICKSCREEN_RIGHT].height = i;
vp_icons[screen].y = vps[screen][QUICKSCREEN_LEFT].y + (char_height/2);
vp_icons[screen].height =
vps[screen][QUICKSCREEN_BOTTOM].y - vp_icons[screen].y;
if (MAX(left_width, right_width)*2 > parent->width - CENTER_ICONAREA_WIDTH)
{
/* scrolling needed */
int center = (parent->width - CENTER_ICONAREA_WIDTH)/2;
int width = MIN(center, MIN(left_width, right_width));
vps[screen][QUICKSCREEN_LEFT].width = width;
vps[screen][QUICKSCREEN_RIGHT].width = width;
vps[screen][QUICKSCREEN_RIGHT].x = parent->x+parent->width - width;
vp_icons[screen].x = parent->x + center;
vp_icons[screen].width = CENTER_ICONAREA_WIDTH;
}
else
{
int width, pad = 0;
if (left_width > right_width)
width = left_width;
else
width = right_width;
width += CENTER_MARGIN;
if (width*2 < parent->width/2)
{
width += parent->width/6;
/* add some padding on the edges */
pad = CENTER_MARGIN;
}
vps[screen][QUICKSCREEN_LEFT].width = width;
vps[screen][QUICKSCREEN_RIGHT].width = width;
vps[screen][QUICKSCREEN_RIGHT].x = parent->x + parent->width - width;
vp_icons[screen].x = parent->x + width;
if (pad)
{
vp_icons[screen].x += pad;
vps[screen][QUICKSCREEN_LEFT].x += pad;
vps[screen][QUICKSCREEN_RIGHT].x -= pad;
/* need to add the pad to the bottom to make it all centered nicely */
vps[screen][QUICKSCREEN_BOTTOM].x += pad;
vps[screen][QUICKSCREEN_BOTTOM].width -= pad;
}
vp_icons[screen].width = vps[screen][QUICKSCREEN_RIGHT].x - (vps[screen][QUICKSCREEN_LEFT].x+width);
}
}
static void quickscreen_draw_text(char *s, int item, bool title,
struct screen *display, struct viewport *vp)
{
int nb_lines = viewport_get_nb_lines(vp);
int w, h, line = 0, x = 0;
display->getstringsize(s, &w, &h);
if (nb_lines > 1 && !title)
line = 1;
switch (item)
{
case QUICKSCREEN_BOTTOM:
x = (vp->width - w)/2;
break;
case QUICKSCREEN_LEFT:
x = 0;
break;
case QUICKSCREEN_RIGHT:
x = vp->width - w;
break;
}
if (w>vp->width)
display->puts_scroll(0, line, s);
else
display->putsxy(x, line*h, s);
}
static void gui_quickscreen_draw(struct gui_quickscreen *qs,
struct screen *display,
struct viewport *parent)
{
#ifdef HAVE_REMOTE_LCD
int screen = display->screen_type;
#else
const int screen = 0;
#endif
int i;
char buf[MAX_PATH];
unsigned char *title, *value;
void *setting;
int temp;
display->set_viewport(parent);
display->clear_viewport();
for (i=0; i<QUICKSCREEN_ITEM_COUNT; i++)
{
if (!qs->items[i])
continue;
display->set_viewport(&vps[screen][i]);
display->scroll_stop(&vps[screen][i]);
title = P2STR(ID2P(qs->items[i]->lang_id));
setting = qs->items[i]->setting;
temp = option_value_as_int(qs->items[i]);
value = option_get_valuestring((struct settings_list*)qs->items[i],
buf, MAX_PATH, temp);
if (vps[screen][i].height < display->char_height*2)
{
char text[MAX_PATH];
snprintf(text, MAX_PATH, "%s: %s", title, value);
quickscreen_draw_text(text, i, true, display, &vps[screen][i]);
}
else
{
quickscreen_draw_text(title, i, true, display, &vps[screen][i]);
quickscreen_draw_text(value, i, false, display, &vps[screen][i]);
}
display->update_viewport();
}
/* draw the icons */
display->set_viewport(&vp_icons[screen]);
display->mono_bitmap(bitmap_icons_7x8[Icon_FastForward],
vp_icons[screen].width - 8, 0, 7, 8);
display->mono_bitmap(bitmap_icons_7x8[Icon_FastBackward], 0, 0, 7, 8);
display->mono_bitmap(bitmap_icons_7x8[Icon_DownArrow],
(vp_icons[screen].width/2) - 4,
vp_icons[screen].height - 7, 7, 8);
display->update_viewport();
display->set_viewport(parent);
display->update_viewport();
display->set_viewport(NULL);
}
static void talk_qs_option(struct settings_list *opt, bool enqueue)
{
if (global_settings.talk_menu) {
if(!enqueue)
talk_shutup();
talk_id(opt->lang_id, true);
option_talk_value(opt, option_value_as_int(opt), true);
}
}
/*
* Does the actions associated to the given button if any
* - qs : the quickscreen
* - button : the key we are going to analyse
* returns : true if the button corresponded to an action, false otherwise
*/
static bool gui_quickscreen_do_button(struct gui_quickscreen * qs, int button)
{
int item;
switch(button)
{
case ACTION_QS_LEFT:
item = QUICKSCREEN_LEFT;
break;
case ACTION_QS_DOWN:
case ACTION_QS_DOWNINV:
item = QUICKSCREEN_BOTTOM;
break;
case ACTION_QS_RIGHT:
item = QUICKSCREEN_RIGHT;
break;
default:
return false;
}
option_select_next_val((struct settings_list *)qs->items[item], false, true);
talk_qs_option((struct settings_list *)qs->items[item], false);
return true;
}
bool gui_syncquickscreen_run(struct gui_quickscreen * qs, int button_enter)
{
int button, i;
struct viewport vp[NB_SCREENS];
bool changed = false;
/* To quit we need either :
* - a second press on the button that made us enter
* - an action taken while pressing the enter button,
* then release the enter button*/
bool can_quit = false;
gui_syncstatusbar_draw(&statusbars, true);
FOR_NB_SCREENS(i)
{
screens[i].set_viewport(NULL);
screens[i].stop_scroll();
viewport_set_defaults(&vp[i], i);
quickscreen_fix_viewports(qs, &screens[i], &vp[i]);
gui_quickscreen_draw(qs, &screens[i], &vp[i]);
}
/* Announce current selection on entering this screen. This is all
queued up, but can be interrupted as soon as a setting is
changed. */
cond_talk_ids(VOICE_QUICKSCREEN);
talk_qs_option((struct settings_list *)qs->items[QUICKSCREEN_LEFT], true);
talk_qs_option((struct settings_list *)qs->items[QUICKSCREEN_BOTTOM], true);
talk_qs_option((struct settings_list *)qs->items[QUICKSCREEN_RIGHT], true);
while (true) {
button = get_action(CONTEXT_QUICKSCREEN,HZ/5);
if(default_event_handler(button) == SYS_USB_CONNECTED)
return(true);
if(gui_quickscreen_do_button(qs, button))
{
changed = true;
can_quit=true;
FOR_NB_SCREENS(i)
gui_quickscreen_draw(qs, &screens[i], &vp[i]);
if (qs->callback)
qs->callback(qs);
}
else if(button==button_enter)
can_quit=true;
if((button == button_enter) && can_quit)
break;
if(button==ACTION_STD_CANCEL)
break;
gui_syncstatusbar_draw(&statusbars, false);
}
/* Notify that we're exiting this screen */
cond_talk_ids_fq(VOICE_OK);
return changed;
}
bool quick_screen_quick(int button_enter)
{
struct gui_quickscreen qs;
bool oldshuffle = global_settings.playlist_shuffle;
int oldrepeat = global_settings.repeat_mode;
qs.items[QUICKSCREEN_LEFT] =
find_setting(&global_settings.playlist_shuffle, NULL);
qs.items[QUICKSCREEN_RIGHT] =
find_setting(&global_settings.repeat_mode, NULL);
qs.items[QUICKSCREEN_BOTTOM] =
find_setting(&global_settings.dirfilter, NULL);
qs.callback = NULL;
if (gui_syncquickscreen_run(&qs, button_enter))
{
settings_save();
settings_apply(false);
/* make sure repeat/shuffle/any other nasty ones get updated */
if ( oldrepeat != global_settings.repeat_mode &&
(audio_status() & AUDIO_STATUS_PLAY) )
{
audio_flush_and_reload_tracks();
}
if (oldshuffle != global_settings.playlist_shuffle
&& audio_status() & AUDIO_STATUS_PLAY)
{
#if CONFIG_CODEC == SWCODEC
dsp_set_replaygain();
#endif
if (global_settings.playlist_shuffle)
playlist_randomise(NULL, current_tick, true);
else
playlist_sort(NULL, true);
}
}
return(0);
}
#ifdef BUTTON_F3
bool quick_screen_f3(int button_enter)
{
struct gui_quickscreen qs;
qs.items[QUICKSCREEN_LEFT] =
find_setting(&global_settings.scrollbar, NULL);
qs.items[QUICKSCREEN_RIGHT] =
find_setting(&global_settings.statusbar, NULL);
qs.items[QUICKSCREEN_BOTTOM] =
find_setting(&global_settings.flip_display, NULL);
qs.callback = NULL;
if (gui_syncquickscreen_run(&qs, button_enter))
{
settings_save();
settings_apply(false);
}
return(0);
}
#endif /* BUTTON_F3 */
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