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rockbox/apps/gui/viewport.c

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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"
#include "list.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};
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();
skinlist_set_cfg(screen, NULL);
}
/* 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
if (!vp->line_height)
return vp->height/font_get(vp->font)->height;
return vp->height/vp->line_height;
#else
(void)vp;
return 2;
#endif
}
static void viewportmanager_redraw(void* data)
{
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
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)
{
#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_LANGUAGE)
{
}
if (which & (THEME_STATUSBAR|THEME_UI_VIEWPORT))
{
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 = screens[screen].getuifont();
vp->line_height = 0; /* calculate from font height */
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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