rockbox/apps/gui/statusbar-skinned.c
Solomon Peachy a605cdf700 Fix multiple potential null pointer dereferencess
GCC's optimizer thinks all of these _will_ fail at some point

Change-Id: I287eeb574162a5d3b3347654d25aa1f53e9f5563
2020-10-28 08:42:49 -04:00

326 lines
9.7 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2009 Thomas Martitz
*
* 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 "config.h"
#include "action.h"
#include "system.h"
#include "settings.h"
#include "appevents.h"
#include "screens.h"
#include "screen_access.h"
#include "strlcpy.h"
#include "skin_parser.h"
#include "skin_buffer.h"
#include "skin_engine/skin_engine.h"
#include "skin_engine/wps_internals.h"
#include "viewport.h"
#include "statusbar.h"
#include "statusbar-skinned.h"
#include "debug.h"
#include "font.h"
#include "icon.h"
#include "icons.h"
#include "option_select.h"
#ifdef HAVE_TOUCHSCREEN
#include "sound.h"
#include "misc.h"
#endif
/* initial setup of wps_data */
static int update_delay = DEFAULT_UPDATE_DELAY;
static bool sbs_has_title[NB_SCREENS];
static char* sbs_title[NB_SCREENS];
static enum themable_icons sbs_icon[NB_SCREENS];
static bool sbs_loaded[NB_SCREENS] = { false };
bool sb_set_title_text(char* title, enum themable_icons icon, enum screen_type screen)
{
sbs_title[screen] = title;
/* Icon_NOICON == -1 which the skin engine wants at position 1, so + 2 */
sbs_icon[screen] = icon + 2;
return sbs_has_title[screen];
}
void sb_skin_has_title(enum screen_type screen)
{
sbs_has_title[screen] = true;
}
const char* sb_get_title(enum screen_type screen)
{
return sbs_has_title[screen] ? sbs_title[screen] : NULL;
}
enum themable_icons sb_get_icon(enum screen_type screen)
{
return sbs_has_title[screen] ? sbs_icon[screen] : Icon_NOICON + 2;
}
int sb_preproccess(enum screen_type screen, struct wps_data *data)
{
(void)data;
sbs_loaded[screen] = false;
sbs_has_title[screen] = false;
viewportmanager_theme_enable(screen, false, NULL);
return 1;
}
int sb_postproccess(enum screen_type screen, struct wps_data *data)
{
if (data->wps_loaded)
{
/* hide the sb's default viewport because it has nasty effect with stuff
* not part of the statusbar,
* hence .sbs's without any other vps are unsupported*/
struct skin_viewport *vp = skin_find_item(VP_DEFAULT_LABEL_STRING, SKIN_FIND_VP, data);
struct skin_element *tree = SKINOFFSETTOPTR(get_skin_buffer(data), data->tree);
struct skin_element *next_vp = NULL;
if (tree) next_vp = SKINOFFSETTOPTR(get_skin_buffer(data), tree->next);
if (vp)
{
if (!next_vp)
{ /* no second viewport, let parsing fail */
return 0;
}
/* hide this viewport, forever */
vp->hidden_flags = VP_NEVER_VISIBLE;
}
sb_set_info_vp(screen, VP_DEFAULT_LABEL);
sbs_loaded[screen] = true;
}
viewportmanager_theme_undo(screen, false);
return 1;
}
static OFFSETTYPE(char*) infovp_label[NB_SCREENS];
static OFFSETTYPE(char*) oldinfovp_label[NB_SCREENS];
void sb_set_info_vp(enum screen_type screen, OFFSETTYPE(char*) label)
{
infovp_label[screen] = label;
}
struct viewport *sb_skin_get_info_vp(enum screen_type screen)
{
if (sbs_loaded[screen] == false)
return NULL;
struct wps_data *data = skin_get_gwps(CUSTOM_STATUSBAR, screen)->data;
struct skin_viewport *vp = NULL;
char *label;
if (oldinfovp_label[screen] &&
(oldinfovp_label[screen] != infovp_label[screen]))
{
/* UI viewport changed, so force a redraw */
oldinfovp_label[screen] = infovp_label[screen];
viewportmanager_theme_enable(screen, false, NULL);
viewportmanager_theme_undo(screen, true);
}
if (infovp_label[screen] == VP_DEFAULT_LABEL)
label = VP_DEFAULT_LABEL_STRING;
else
label = SKINOFFSETTOPTR(get_skin_buffer(data), infovp_label[screen]);
if (!label)
return NULL;
vp = skin_find_item(label, SKIN_FIND_UIVP, data);
if (!vp)
return NULL;
if (vp->parsed_fontid == 1)
vp->vp.font = screens[screen].getuifont();
return &vp->vp;
}
#if (LCD_DEPTH > 1) || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
int sb_get_backdrop(enum screen_type screen)
{
struct wps_data *data = skin_get_gwps(CUSTOM_STATUSBAR, screen)->data;
if (data->wps_loaded)
return data->backdrop_id;
else
return -1;
}
#endif
static bool force_waiting = false;
void sb_skin_update(enum screen_type screen, bool force)
{
struct wps_data *data = skin_get_gwps(CUSTOM_STATUSBAR, screen)->data;
static long next_update[NB_SCREENS] = {0};
int i = screen;
if (!data->wps_loaded)
return;
if (TIME_AFTER(current_tick, next_update[i]) || force || force_waiting)
{
force_waiting = false;
#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
/* currently, all remotes are readable without backlight
* so still update those */
if (lcd_active() || (i != SCREEN_MAIN))
#endif
{
if (force)
skin_request_full_update(CUSTOM_STATUSBAR);
skin_update(CUSTOM_STATUSBAR, screen, SKIN_REFRESH_NON_STATIC);
}
next_update[i] = current_tick + update_delay; /* don't update too often */
}
}
void do_sbs_update_callback(unsigned short id, void *param)
{
(void)id;
(void)param;
/* the WPS handles changing the actual id3 data in the id3 pointers
* we imported, we just want a full update */
skin_request_full_update(CUSTOM_STATUSBAR);
force_waiting = true;
/* force timeout in wps main loop, so that the update is instantly */
queue_post(&button_queue, BUTTON_NONE, 0);
}
void sb_skin_set_update_delay(int delay)
{
update_delay = delay;
}
/* This creates and loads a ".sbs" based on the user settings for:
* - regular statusbar
* - colours
* - ui viewport
* - backdrop
*/
char* sb_create_from_settings(enum screen_type screen)
{
static char buf[128];
char *ptr, *ptr2;
int len, remaining = sizeof(buf);
int bar_position = statusbar_position(screen);
ptr = buf;
ptr[0] = '\0';
/* setup the inbuilt statusbar */
if (bar_position != STATUSBAR_OFF)
{
int y = 0, height = STATUSBAR_HEIGHT;
if (bar_position == STATUSBAR_BOTTOM)
{
y = screens[screen].lcdheight - STATUSBAR_HEIGHT;
}
len = snprintf(ptr, remaining, "%%V(0,%d,-,%d,0)\n%%wi\n",
y, height);
remaining -= len;
ptr += len;
}
/* %Vi viewport, colours handled by the parser */
#if NB_SCREENS > 1
if (screen == SCREEN_REMOTE)
ptr2 = global_settings.remote_ui_vp_config;
else
#endif
ptr2 = global_settings.ui_vp_config;
if (ptr2[0] && ptr2[0] != '-') /* from ui viewport setting */
{
char *comma = ptr;
int param_count = 0;
len = snprintf(ptr, remaining, "%%ax%%Vi(-,%s)\n", ptr2);
/* The config put the colours at the end of the viewport,
* they need to be stripped for the skin code though */
do {
param_count++;
comma = strchr(comma+1, ',');
} while (comma && param_count < 6);
if (comma)
{
char *end = comma;
char fg[8], bg[8];
int i = 0;
comma++;
while (*comma != ',')
fg[i++] = *comma++;
fg[i] = '\0'; comma++; i=0;
while (*comma != ')')
bg[i++] = *comma++;
bg[i] = '\0';
len += snprintf(end, remaining-len, ") %%Vf(%s) %%Vb(%s)\n", fg, bg);
}
}
else
{
int y = 0, height;
switch (bar_position)
{
case STATUSBAR_TOP:
y = STATUSBAR_HEIGHT;
case STATUSBAR_BOTTOM:
height = screens[screen].lcdheight - STATUSBAR_HEIGHT;
break;
default:
height = screens[screen].lcdheight;
}
len = snprintf(ptr, remaining, "%%ax%%Vi(-,0,%d,-,%d,1)\n",
y, height);
}
return buf;
}
void sb_skin_init(void)
{
FOR_NB_SCREENS(i)
{
oldinfovp_label[i] = VP_DEFAULT_LABEL;
}
}
#ifdef HAVE_TOUCHSCREEN
static bool bypass_sb_touchregions = true;
void sb_bypass_touchregions(bool enable)
{
bypass_sb_touchregions = enable;
}
int sb_touch_to_button(int context)
{
struct touchregion *region;
static int last_context = -1;
int button, offset;
if (bypass_sb_touchregions)
return ACTION_TOUCHSCREEN;
if (last_context != context)
skin_disarm_touchregions(skin_get_gwps(CUSTOM_STATUSBAR, SCREEN_MAIN)->data);
last_context = context;
button = skin_get_touchaction(skin_get_gwps(CUSTOM_STATUSBAR, SCREEN_MAIN)->data,
&offset, &region);
switch (button)
{
#ifdef HAVE_VOLUME_IN_LIST
case ACTION_WPS_VOLUP:
return ACTION_LIST_VOLUP;
case ACTION_WPS_VOLDOWN:
return ACTION_LIST_VOLDOWN;
#endif
/* TODO */
}
return button;
}
#endif