Nyaaori/rockbox
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
rockbox/apps/plugins/text_viewer/tv_window.c
Yoshihisa Uchida 88bd00903a text viewer: 1) fix uisim abends when fonts list is displayed. 
2) simplify the logic to change font.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26685 a1c6a512-1295-4272-9138-f99709370657
2010-06-08 10:34:13 +00:00

408 lines
11 KiB
C
Raw Blame History

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 Gilles Roux
* 2003 Garrett Derner
* 2010 Yoshihisa Uchida
*
* 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 "plugin.h"
#include "tv_bookmark.h"
#include "tv_preferences.h"
#include "tv_screen_pos.h"
#include "tv_text_reader.h"
#include "tv_window.h"
#define TV_SCROLLBAR_WIDTH rb->global_settings->scrollbar_width
#define TV_SCROLLBAR_HEIGHT 4
#ifndef HAVE_LCD_BITMAP
#define TV_BOOKMARK_ICON 0xe101
#endif
#ifdef HAVE_LCD_BITMAP
static int header_height;
static int footer_height;
static bool need_vertical_scrollbar = false;
#endif
static int start_width;
static int display_lines;
static int window_width;
static int window_columns;
static int col_width;
static int cur_window;
static int cur_column;
static const struct tv_preferences *prefs = NULL;
#ifdef HAVE_LCD_BITMAP
static bool tv_set_font(const unsigned char *font)
{
unsigned char path[MAX_PATH];
if (font != NULL && *font != '\0')
{
rb->snprintf(path, MAX_PATH, "%s/%s.fnt", FONT_DIR, font);
if (rb->font_load(NULL, path) < 0)
{
rb->splash(HZ/2, "font load failed");
return false;
}
}
return true;
}
static void tv_check_header_and_footer(void)
{
struct tv_preferences new_prefs;
tv_copy_preferences(&new_prefs);
if (rb->global_settings->statusbar != STATUSBAR_TOP)
{
if (new_prefs.header_mode == HD_SBAR)
new_prefs.header_mode = HD_NONE;
else if (new_prefs.header_mode == HD_BOTH)
new_prefs.header_mode = HD_PATH;
}
if (rb->global_settings->statusbar != STATUSBAR_BOTTOM)
{
if (new_prefs.footer_mode == FT_SBAR)
new_prefs.footer_mode = FT_NONE;
else if (new_prefs.footer_mode == FT_BOTH)
new_prefs.footer_mode = FT_PAGE;
}
tv_set_preferences(&new_prefs);
}
static void tv_show_header(void)
{
if (prefs->header_mode == HD_SBAR || prefs->header_mode == HD_BOTH)
rb->gui_syncstatusbar_draw(rb->statusbars, true);
if (prefs->header_mode == HD_PATH || prefs->header_mode == HD_BOTH)
rb->lcd_putsxy(0, header_height - prefs->font->height, prefs->file_name);
}
static void tv_show_footer(const struct tv_screen_pos *pos)
{
unsigned char buf[12];
if (prefs->footer_mode == FT_SBAR || prefs->footer_mode == FT_BOTH)
rb->gui_syncstatusbar_draw(rb->statusbars, true);
if (prefs->footer_mode == FT_PAGE || prefs->footer_mode == FT_BOTH)
{
if (pos->line == 0)
rb->snprintf(buf, sizeof(buf), "%d", pos->page + 1);
else
rb->snprintf(buf, sizeof(buf), "%d - %d", pos->page + 1, pos->page + 2);
rb->lcd_putsxy(0, LCD_HEIGHT - footer_height, buf);
}
}
static void tv_show_scrollbar(off_t cur_pos, int size)
{
int items;
int min_shown;
int max_shown;
int sb_width;
int sb_height;
sb_height = LCD_HEIGHT - header_height - footer_height;
if (prefs->horizontal_scrollbar)
{
items = prefs->windows * window_columns;
min_shown = cur_window * window_columns + cur_column;
max_shown = min_shown + window_columns;
sb_width = (need_vertical_scrollbar)? TV_SCROLLBAR_WIDTH : 0;
sb_height -= TV_SCROLLBAR_HEIGHT;
rb->gui_scrollbar_draw(rb->screens[SCREEN_MAIN],
sb_width,
LCD_HEIGHT - footer_height - TV_SCROLLBAR_HEIGHT,
LCD_WIDTH - sb_width, TV_SCROLLBAR_HEIGHT,
items, min_shown, max_shown, HORIZONTAL);
}
if (need_vertical_scrollbar)
{
items = (int) tv_get_total_text_size();
min_shown = (int) cur_pos;
max_shown = min_shown + size;
rb->gui_scrollbar_draw(rb->screens[SCREEN_MAIN], 0, header_height,
TV_SCROLLBAR_WIDTH-1, sb_height,
items, min_shown, max_shown, VERTICAL);
}
}
static int tv_calc_display_lines(void)
{
int scrollbar_height = (prefs->horizontal_scrollbar)? TV_SCROLLBAR_HEIGHT : 0;
header_height = (prefs->header_mode == HD_SBAR || prefs->header_mode == HD_BOTH)?
STATUSBAR_HEIGHT : 0;
footer_height = (prefs->footer_mode == FT_SBAR || prefs->footer_mode == FT_BOTH)?
STATUSBAR_HEIGHT : 0;
if (prefs->header_mode == HD_NONE || prefs->header_mode == HD_PATH ||
prefs->footer_mode == FT_NONE || prefs->footer_mode == FT_PAGE)
rb->gui_syncstatusbar_draw(rb->statusbars, false);
if (prefs->header_mode == HD_PATH || prefs->header_mode == HD_BOTH)
header_height += prefs->font->height;
if (prefs->footer_mode == FT_PAGE || prefs->footer_mode == FT_BOTH)
footer_height += prefs->font->height;
return (LCD_HEIGHT - header_height - footer_height - scrollbar_height) / prefs->font->height;
}
#endif
static void tv_show_bookmarks(const struct tv_screen_pos *top_pos)
{
struct tv_screen_pos bookmarks[TV_MAX_BOOKMARKS];
int count = tv_get_bookmark_positions(bookmarks);
int line;
#ifdef HAVE_LCD_BITMAP
rb->lcd_set_drawmode(DRMODE_COMPLEMENT);
#endif
while (count--)
{
line = (bookmarks[count].page - top_pos->page) * display_lines
+ (bookmarks[count].line - top_pos->line);
if (line >= 0 && line < display_lines)
{
#ifdef HAVE_LCD_BITMAP
rb->lcd_fillrect(start_width, header_height + line * prefs->font->height,
window_width, prefs->font->height);
#else
rb->lcd_putc(start_width - 1, line, TV_BOOKMARK_ICON);
#endif
}
}
#ifdef HAVE_LCD_BITMAP
rb->lcd_set_drawmode(DRMODE_SOLID);
#endif
}
void tv_draw_window(void)
{
struct tv_screen_pos pos;
const unsigned char *line_buf;
int line;
int offset = cur_column * col_width;
int size = 0;
int line_width;
int draw_width = (prefs->windows - cur_window) * LCD_WIDTH - offset;
int dx = start_width - offset;
tv_copy_screen_pos(&pos);
rb->lcd_clear_display();
if (prefs->alignment == LEFT)
tv_read_start(cur_window, (cur_column > 0));
else
tv_read_start(0, prefs->windows > 1);
for (line = 0; line < display_lines; line++)
{
if (!tv_get_next_line(&line_buf))
break;
if (prefs->alignment == RIGHT)
{
rb->lcd_getstringsize(line_buf, &line_width, NULL);
dx = draw_width - line_width;
}
#ifdef HAVE_LCD_BITMAP
rb->lcd_putsxy(dx, header_height + line * prefs->font->height, line_buf);
#else
rb->lcd_puts(dx, line, line_buf);
#endif
}
size = tv_read_end();
tv_show_bookmarks(&pos);
#ifdef HAVE_LCD_BITMAP
tv_show_scrollbar(pos.file_pos, size);
tv_show_header();
tv_show_footer(&pos);
#endif
rb->lcd_update();
}
bool tv_traverse_lines(void)
{
int i;
bool res = true;
tv_read_start(0, false);
for (i = 0; i < display_lines; i++)
{
if (!tv_get_next_line(NULL))
{
res = false;
break;
}
}
tv_read_end();
return res;
}
static void tv_change_preferences(const struct tv_preferences *oldp)
{
#ifdef HAVE_LCD_BITMAP
static bool font_changing = false;
const unsigned char *font_str;
font_str = (oldp && !font_changing)? oldp->font_name : rb->global_settings->font_file;
font_changing = true;
/* change font */
if (rb->strcmp(font_str, prefs->font_name))
{
if (!tv_set_font(prefs->font_name))
{
struct tv_preferences new_prefs = *prefs;
rb->strlcpy(new_prefs.font_name, font_str, MAX_PATH);
tv_set_preferences(&new_prefs);
}
}
else if (!oldp || font_changing)
tv_set_font(font_str);
/* calculates display lines */
tv_check_header_and_footer();
display_lines = tv_calc_display_lines();
/* if font_changing == false, the remaining processes need not be executed. */
if (!font_changing)
return;
font_changing = false;
#else
(void)oldp;
/* REAL fixed pitch :) all chars use up 1 cell */
display_lines = 2;
#endif
#ifdef HAVE_LCD_BITMAP
col_width = 2 * rb->font_get_width(prefs->font, ' ');
#else
col_width = 1;
#endif
if (cur_window >= prefs->windows)
cur_window = 0;
window_width = LCD_WIDTH;
#ifdef HAVE_LCD_BITMAP
need_vertical_scrollbar = false;
start_width = 0;
tv_seek_top();
tv_set_read_conditions(prefs->windows, window_width);
if (tv_traverse_lines() && prefs->vertical_scrollbar)
{
need_vertical_scrollbar = true;
start_width = TV_SCROLLBAR_WIDTH;
}
tv_seek_top();
#else
start_width = 1;
#endif
window_width -= start_width;
window_columns = window_width / col_width;
cur_column = 0;
tv_set_read_conditions(prefs->windows, window_width);
}
bool tv_init_window(unsigned char *buf, size_t bufsize, size_t *used_size)
{
tv_add_preferences_change_listner(tv_change_preferences);
if (!tv_init_text_reader(buf, bufsize, used_size))
return false;
prefs = tv_get_preferences();
return true;
}
void tv_finalize_window(void)
{
tv_finalize_text_reader();
#ifdef HAVE_LCD_BITMAP
/* restore font */
if (rb->strcmp(rb->global_settings->font_file, prefs->font_name))
{
tv_set_font(rb->global_settings->font_file);
}
#endif
}
void tv_move_window(int window_delta, int column_delta)
{
cur_window += window_delta;
cur_column += column_delta;
if (cur_window < 0)
{
cur_window = 0;
cur_column = 0;
}
else if (cur_window >= prefs->windows)
{
cur_window = prefs->windows - 1;
cur_column = 0;
}
if (cur_column < 0)
{
if (cur_window == 0)
cur_column = 0;
else
{
cur_window--;
cur_column = window_columns - 1;
}
}
else
{
if (cur_window == prefs->windows - 1)
cur_column = 0;
else if (cur_column >= window_columns)
{
cur_window++;
cur_column = 0;
}
}
}
Reference in a new issue View git blame Copy permalink