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rockbox/apps/gui/viewport.c
Jonathan Gordon 9928e3418f Another major skin backend update/hopefully bugfix: 
Skins are now more self contained in the skin manager which in the future might allow on demand skin loading (i.e smaller skin buffers)
Skin backdrops are also managed more intelegently (fixes a bug where you can get a crazy backdrop loaded if a .sbs fails to load)

the rockbox_default rescue theme is now called rockbox_failsafe to better express what it actually is.

This commit hopefully/maybe fixes the heavily reported data aborts, so please check if you are getting them

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28073 a1c6a512-1295-4272-9138-f99709370657
2010-09-14 11:56:50 +00:00

413 lines
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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 <stdlib.h>
#include "config.h"
#include "lcd.h"
#include "lcd-remote.h"
#include "font.h"
#include "viewport.h"
#include "screen_access.h"
#include "settings.h"
#include "misc.h"
/*some short cuts for fg/bg/line selector handling */
#ifdef HAVE_LCD_COLOR
#define FG_FALLBACK global_settings.fg_color
#define BG_FALLBACK global_settings.bg_color
#else
#define FG_FALLBACK LCD_DEFAULT_FG
#define BG_FALLBACK LCD_DEFAULT_BG
#endif
#ifdef HAVE_REMOTE_LCD
#define REMOTE_FG_FALLBACK LCD_REMOTE_DEFAULT_FG
#define REMOTE_BG_FALLBACK LCD_REMOTE_DEFAULT_BG
#endif
/* all below isn't needed for pc tools (i.e. checkwps/wps editor)
* only viewport_parse_viewport() is */
#ifndef __PCTOOL__
#include "string.h"
#include "kernel.h"
#include "system.h"
#include "statusbar.h"
#include "appevents.h"
#include "panic.h"
#ifdef HAVE_LCD_BITMAP
#include "language.h"
#endif
#include "statusbar-skinned.h"
#include "skin_engine/skin_engine.h"
#include "debug.h"
#define VPSTACK_DEPTH 16
struct viewport_stack_item
{
struct viewport* vp;
bool enabled;
};
#ifdef HAVE_LCD_BITMAP
static void viewportmanager_redraw(void* data);
static int theme_stack_top[NB_SCREENS]; /* the last item added */
static struct viewport_stack_item theme_stack[NB_SCREENS][VPSTACK_DEPTH];
static bool is_theme_enabled(enum screen_type screen);
static void toggle_events(bool enable)
{
if (enable)
{
add_event(GUI_EVENT_ACTIONUPDATE, false, viewportmanager_redraw);
#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
add_event(LCD_EVENT_ACTIVATION, false, do_sbs_update_callback);
#endif
add_event(PLAYBACK_EVENT_TRACK_CHANGE, false,
do_sbs_update_callback);
add_event(PLAYBACK_EVENT_NEXTTRACKID3_AVAILABLE, false,
do_sbs_update_callback);
}
else
{
#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
remove_event(LCD_EVENT_ACTIVATION, do_sbs_update_callback);
#endif
remove_event(PLAYBACK_EVENT_TRACK_CHANGE, do_sbs_update_callback);
remove_event(PLAYBACK_EVENT_NEXTTRACKID3_AVAILABLE, do_sbs_update_callback);
remove_event(GUI_EVENT_ACTIONUPDATE, viewportmanager_redraw);
}
}
static void toggle_theme(enum screen_type screen, bool force)
{
bool enable_event = false;
static bool was_enabled[NB_SCREENS] = {false};
static bool after_boot[NB_SCREENS] = {false};
int i;
FOR_NB_SCREENS(i)
{
enable_event = enable_event || is_theme_enabled(i);
sb_set_title_text(NULL, Icon_NOICON, i);
}
toggle_events(enable_event);
if (is_theme_enabled(screen))
{
bool first_boot = theme_stack_top[screen] == 0;
/* remove the left overs from the previous screen.
* could cause a tiny flicker. Redo your screen code if that happens */
#if LCD_DEPTH > 1 || defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1
skin_backdrop_show(sb_get_backdrop(screen));
#endif
if (LIKELY(after_boot[screen]) && (!was_enabled[screen] || force))
{
struct viewport deadspace, user;
viewport_set_defaults(&user, screen);
deadspace = user; /* get colours and everything */
/* above */
deadspace.x = 0;
deadspace.y = 0;
deadspace.width = screens[screen].lcdwidth;
deadspace.height = user.y;
if (deadspace.width && deadspace.height)
{
screens[screen].set_viewport(&deadspace);
screens[screen].clear_viewport();
screens[screen].update_viewport();
}
/* below */
deadspace.y = user.y + user.height;
deadspace.height = screens[screen].lcdheight - deadspace.y;
if (deadspace.width && deadspace.height)
{
screens[screen].set_viewport(&deadspace);
screens[screen].clear_viewport();
screens[screen].update_viewport();
}
/* left */
deadspace.x = 0;
deadspace.y = 0;
deadspace.width = user.x;
deadspace.height = screens[screen].lcdheight;
if (deadspace.width && deadspace.height)
{
screens[screen].set_viewport(&deadspace);
screens[screen].clear_viewport();
screens[screen].update_viewport();
}
/* below */
deadspace.x = user.x + user.width;
deadspace.width = screens[screen].lcdwidth - deadspace.x;
if (deadspace.width && deadspace.height)
{
screens[screen].set_viewport(&deadspace);
screens[screen].clear_viewport();
screens[screen].update_viewport();
}
screens[screen].set_viewport(NULL);
}
intptr_t force = first_boot?0:1;
send_event(GUI_EVENT_ACTIONUPDATE, (void*)force);
}
else
{
#if LCD_DEPTH > 1 || (defined(LCD_REMOTE_DEPTH) && LCD_REMOTE_DEPTH > 1)
screens[screen].backdrop_show(NULL);
#endif
screens[screen].stop_scroll();
}
/* let list initialize viewport in case viewport dimensions is changed. */
send_event(GUI_EVENT_THEME_CHANGED, NULL);
FOR_NB_SCREENS(i)
was_enabled[i] = is_theme_enabled(i);
#ifdef HAVE_TOUCHSCREEN
sb_bypass_touchregions(!is_theme_enabled(SCREEN_MAIN));
#endif
after_boot[screen] = true;
}
void viewportmanager_theme_enable(enum screen_type screen, bool enable,
struct viewport *viewport)
{
int top = ++theme_stack_top[screen];
if (top >= VPSTACK_DEPTH-1)
panicf("Stack overflow... viewportmanager");
theme_stack[screen][top].enabled = enable;
theme_stack[screen][top].vp = viewport;
toggle_theme(screen, false);
/* then be nice and set the viewport up */
if (viewport)
viewport_set_defaults(viewport, screen);
}
void viewportmanager_theme_undo(enum screen_type screen, bool force_redraw)
{
int top = --theme_stack_top[screen];
if (top < 0)
panicf("Stack underflow... viewportmanager");
toggle_theme(screen, force_redraw);
}
static bool is_theme_enabled(enum screen_type screen)
{
int top = theme_stack_top[screen];
return theme_stack[screen][top].enabled;
}
#endif /* HAVE_LCD_BITMAP */
int viewport_get_nb_lines(const struct viewport *vp)
{
#ifdef HAVE_LCD_BITMAP
return vp->height/font_get(vp->font)->height;
#else
(void)vp;
return 2;
#endif
}
static void viewportmanager_redraw(void* data)
{
int i;
FOR_NB_SCREENS(i)
{
#ifdef HAVE_LCD_BITMAP
if (is_theme_enabled(i))
sb_skin_update(i, NULL != data);
#else
(void)data;
gui_statusbar_draw(&statusbars.statusbars[i], NULL, NULL);
#endif
}
}
void viewportmanager_init()
{
#ifdef HAVE_LCD_BITMAP
int i;
FOR_NB_SCREENS(i)
{
theme_stack_top[i] = -1; /* the next call fixes this to 0 */
/* We always want the theme enabled by default... */
viewportmanager_theme_enable(i, true, NULL);
}
#else
add_event(GUI_EVENT_ACTIONUPDATE, false, viewportmanager_redraw);
#endif
}
#ifdef HAVE_LCD_BITMAP
void viewportmanager_theme_changed(const int which)
{
int i;
#ifdef HAVE_BUTTONBAR
if (which & THEME_BUTTONBAR)
{ /* don't handle further, the custom ui viewport ignores the buttonbar,
* as does viewport_set_defaults(), since only lists use it*/
screens[SCREEN_MAIN].has_buttonbar = global_settings.buttonbar;
}
#endif
if (which & THEME_UI_VIEWPORT)
{
}
if (which & THEME_LANGUAGE)
{
}
if (which & THEME_STATUSBAR)
{
FOR_NB_SCREENS(i)
{
/* This can probably be done better...
* disable the theme so it's forced to do a full redraw */
viewportmanager_theme_enable(i, false, NULL);
viewportmanager_theme_undo(i, true);
}
}
send_event(GUI_EVENT_THEME_CHANGED, NULL);
}
#ifdef HAVE_TOUCHSCREEN
/* check if a point (x and y coordinates) are within a viewport */
bool viewport_point_within_vp(const struct viewport *vp,
const int x, const int y)
{
bool is_x = (x >= vp->x && x < (vp->x + vp->width));
bool is_y = (y >= vp->y && y < (vp->y + vp->height));
return (is_x && is_y);
}
#endif /* HAVE_TOUCHSCREEN */
static void set_default_align_flags(struct viewport *vp)
{
vp->flags &= ~VP_FLAG_ALIGNMENT_MASK;
if (UNLIKELY(lang_is_rtl()))
vp->flags |= VP_FLAG_ALIGN_RIGHT;
}
#endif /* HAVE_LCD_BITMAP */
#endif /* __PCTOOL__ */
void viewport_set_fullscreen(struct viewport *vp,
const enum screen_type screen)
{
vp->x = 0;
vp->y = 0;
vp->width = screens[screen].lcdwidth;
vp->height = screens[screen].lcdheight;
#ifdef HAVE_LCD_BITMAP
#ifndef __PCTOOL__
set_default_align_flags(vp);
#endif
vp->font = FONT_UI + screen; /* default to UI to discourage SYSFONT use */
vp->drawmode = DRMODE_SOLID;
#if LCD_DEPTH > 1
#ifdef HAVE_REMOTE_LCD
/* We only need this test if there is a remote LCD */
if (screen == SCREEN_MAIN)
#endif
{
vp->fg_pattern = FG_FALLBACK;
vp->bg_pattern = BG_FALLBACK;
#ifdef HAVE_LCD_COLOR
vp->lss_pattern = global_settings.lss_color;
vp->lse_pattern = global_settings.lse_color;
vp->lst_pattern = global_settings.lst_color;
#endif
}
#endif
#if defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1
if (screen == SCREEN_REMOTE)
{
vp->fg_pattern = LCD_REMOTE_DEFAULT_FG;
vp->bg_pattern = LCD_REMOTE_DEFAULT_BG;
}
#endif
#endif
}
void viewport_set_defaults(struct viewport *vp,
const enum screen_type screen)
{
#if defined(HAVE_LCD_BITMAP) && !defined(__PCTOOL__)
struct viewport *sbs_area = NULL;
if (!is_theme_enabled(screen))
{
viewport_set_fullscreen(vp, screen);
return;
}
sbs_area = sb_skin_get_info_vp(screen);
if (sbs_area)
*vp = *sbs_area;
else
#endif /* HAVE_LCD_BITMAP */
viewport_set_fullscreen(vp, screen);
}
#ifdef HAVE_LCD_BITMAP
int get_viewport_default_colour(enum screen_type screen, bool fgcolour)
{
(void)screen; (void)fgcolour;
#if (LCD_DEPTH > 1) || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
int colour;
if (fgcolour)
{
#if (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
if (screen == SCREEN_REMOTE)
colour = REMOTE_FG_FALLBACK;
else
#endif
#if defined(HAVE_LCD_COLOR)
colour = global_settings.fg_color;
#else
colour = FG_FALLBACK;
#endif
}
else
{
#if (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1)
if (screen == SCREEN_REMOTE)
colour = REMOTE_BG_FALLBACK;
else
#endif
#if defined(HAVE_LCD_COLOR)
colour = global_settings.bg_color;
#else
colour = BG_FALLBACK;
#endif
}
return colour;
#else
return 0;
#endif /* LCD_DEPTH > 1 || LCD_REMOTE_DEPTH > 1 */
}
#endif
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