forked from len0rd/rockbox
reworks text viewer plugin. (FS#11209)
new text viewer plugin: text_viewer.rock. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26571 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Yoshihisa Uchida
parent
991e92fd3d
commit
fdba840450
30 changed files with 4798 additions and 2 deletions
394
apps/plugins/text_viewer/tv_window.c
Normal file
394
apps/plugins/text_viewer/tv_window.c
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 Gilles Roux
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* 2003 Garrett Derner
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* 2010 Yoshihisa Uchida
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "plugin.h"
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#include "tv_bookmark.h"
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#include "tv_preferences.h"
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#include "tv_screen_pos.h"
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#include "tv_text_reader.h"
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#include "tv_window.h"
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#define TV_WINDOWS_PER_SCREEN 2
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#define TV_SCROLLBAR_WIDTH rb->global_settings->scrollbar_width
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#ifndef HAVE_LCD_BITMAP
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#define TV_BOOKMARK_ICON 0xe101
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#endif
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#ifdef HAVE_LCD_BITMAP
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static int header_height;
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static int footer_height;
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static bool need_scrollbar = false;
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#endif
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static int start_width;
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static int display_lines;
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static int window_width;
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static int window_columns;
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static int col_width;
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static int max_windows;
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static int cur_window;
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static int cur_column;
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static const struct tv_preferences *prefs = NULL;
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#ifdef HAVE_LCD_BITMAP
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static bool tv_set_font(const unsigned char *font)
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{
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unsigned char path[MAX_PATH];
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if (font != NULL && *font != '\0')
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{
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rb->snprintf(path, MAX_PATH, "%s/%s.fnt", FONT_DIR, font);
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if (rb->font_load(NULL, path) < 0)
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{
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rb->splash(HZ/2, "font load failed");
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return false;
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}
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}
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return true;
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}
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static void tv_check_header_and_footer(void)
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{
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struct tv_preferences new_prefs;
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tv_copy_preferences(&new_prefs);
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if (rb->global_settings->statusbar != STATUSBAR_TOP)
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{
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if (new_prefs.header_mode == HD_SBAR)
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new_prefs.header_mode = HD_NONE;
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else if (new_prefs.header_mode == HD_BOTH)
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new_prefs.header_mode = HD_PATH;
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}
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if (rb->global_settings->statusbar != STATUSBAR_BOTTOM)
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{
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if (new_prefs.footer_mode == FT_SBAR)
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new_prefs.footer_mode = FT_NONE;
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else if (new_prefs.footer_mode == FT_BOTH)
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new_prefs.footer_mode = FT_PAGE;
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}
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tv_set_preferences(&new_prefs);
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}
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static void tv_show_header(void)
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{
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if (prefs->header_mode == HD_SBAR || prefs->header_mode == HD_BOTH)
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rb->gui_syncstatusbar_draw(rb->statusbars, true);
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if (prefs->header_mode == HD_PATH || prefs->header_mode == HD_BOTH)
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rb->lcd_putsxy(0, header_height - prefs->font->height, prefs->file_name);
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}
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static void tv_show_footer(const struct tv_screen_pos *pos)
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{
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unsigned char buf[12];
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if (prefs->footer_mode == FT_SBAR || prefs->footer_mode == FT_BOTH)
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rb->gui_syncstatusbar_draw(rb->statusbars, true);
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if (prefs->footer_mode == FT_PAGE || prefs->footer_mode == FT_BOTH)
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{
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if (pos->line == 0)
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rb->snprintf(buf, sizeof(buf), "%d", pos->page + 1);
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else
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rb->snprintf(buf, sizeof(buf), "%d - %d", pos->page + 1, pos->page + 2);
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rb->lcd_putsxy(0, LCD_HEIGHT - footer_height, buf);
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}
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}
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static void tv_show_scrollbar(off_t cur_pos, int size)
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{
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int items;
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int min_shown;
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int max_shown;
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int sb_begin_y;
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int sb_height;
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if (!need_scrollbar)
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return;
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items = (int) tv_get_total_text_size();
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min_shown = (int) cur_pos;
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max_shown = min_shown + size;
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sb_begin_y = header_height;
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sb_height = LCD_HEIGHT - header_height - footer_height;
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rb->gui_scrollbar_draw(rb->screens[SCREEN_MAIN],0, sb_begin_y,
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TV_SCROLLBAR_WIDTH-1, sb_height,
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items, min_shown, max_shown, VERTICAL);
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}
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static int tv_calc_display_lines(void)
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{
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header_height = (prefs->header_mode == HD_SBAR || prefs->header_mode == HD_BOTH)?
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STATUSBAR_HEIGHT : 0;
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footer_height = (prefs->footer_mode == FT_SBAR || prefs->footer_mode == FT_BOTH)?
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STATUSBAR_HEIGHT : 0;
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if (prefs->header_mode == HD_NONE || prefs->header_mode == HD_PATH ||
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prefs->footer_mode == FT_NONE || prefs->footer_mode == FT_PAGE)
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rb->gui_syncstatusbar_draw(rb->statusbars, false);
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if (prefs->header_mode == HD_PATH || prefs->header_mode == HD_BOTH)
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header_height += prefs->font->height;
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if (prefs->footer_mode == FT_PAGE || prefs->footer_mode == FT_BOTH)
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footer_height += prefs->font->height;
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return (LCD_HEIGHT - header_height - footer_height) / prefs->font->height;
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}
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#endif
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static void tv_show_bookmarks(const struct tv_screen_pos *top_pos)
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{
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struct tv_screen_pos bookmarks[TV_MAX_BOOKMARKS];
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int count = tv_get_bookmark_positions(bookmarks);
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int line;
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#ifdef HAVE_LCD_BITMAP
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rb->lcd_set_drawmode(DRMODE_COMPLEMENT);
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#endif
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while (count--)
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{
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line = (bookmarks[count].page - top_pos->page) * display_lines
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+ (bookmarks[count].line - top_pos->line);
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if (line >= 0 && line < display_lines)
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{
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#ifdef HAVE_LCD_BITMAP
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rb->lcd_fillrect(start_width, header_height + line * prefs->font->height,
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window_width, prefs->font->height);
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#else
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rb->lcd_putc(start_width - 1, line, TV_BOOKMARK_ICON);
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#endif
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}
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}
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#ifdef HAVE_LCD_BITMAP
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rb->lcd_set_drawmode(DRMODE_SOLID);
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#endif
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}
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void tv_draw_window(void)
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{
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struct tv_screen_pos pos;
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const unsigned char *line_buf;
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int line;
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int offset = cur_column * col_width;
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int size = 0;
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int line_width;
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int draw_width = (max_windows - cur_window) * LCD_WIDTH - offset;
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int dx = start_width - offset;
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tv_copy_screen_pos(&pos);
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rb->lcd_clear_display();
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if (prefs->alignment == LEFT)
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tv_read_start(cur_window, (cur_column > 0));
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else
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tv_read_start(0, prefs->view_mode == WIDE);
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for (line = 0; line < display_lines; line++)
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{
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if (!tv_get_next_line(&line_buf))
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break;
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if (prefs->alignment == RIGHT)
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{
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rb->lcd_getstringsize(line_buf, &line_width, NULL);
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dx = draw_width - line_width;
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}
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#ifdef HAVE_LCD_BITMAP
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rb->lcd_putsxy(dx, header_height + line * prefs->font->height, line_buf);
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#else
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rb->lcd_puts(dx, line, line_buf);
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#endif
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}
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size = tv_read_end();
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tv_show_bookmarks(&pos);
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#ifdef HAVE_LCD_BITMAP
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tv_show_scrollbar(pos.file_pos, size);
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tv_show_header();
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tv_show_footer(&pos);
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#endif
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rb->lcd_update();
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}
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bool tv_traverse_lines(void)
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{
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int i;
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bool res = true;
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tv_read_start(0, false);
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for (i = 0; i < display_lines; i++)
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{
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if (!tv_get_next_line(NULL))
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{
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res = false;
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break;
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}
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}
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tv_read_end();
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return res;
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}
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static void tv_change_preferences(const struct tv_preferences *oldp)
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{
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#ifdef HAVE_LCD_BITMAP
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static bool is_executing = false;
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is_executing = true;
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/* change font */
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if (oldp == NULL || rb->strcmp(oldp->font_name, prefs->font_name))
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{
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if (!tv_set_font(prefs->font_name))
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{
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struct tv_preferences new_prefs = *prefs;
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const unsigned char *font_str;
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font_str = (oldp == NULL)? rb->global_settings->font_file : oldp->font_name;
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if (!tv_set_font(font_str) && oldp != NULL)
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{
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font_str = rb->global_settings->font_file;
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tv_set_font(new_prefs.font_name);
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}
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rb->strlcpy(new_prefs.font_name, font_str, MAX_PATH);
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tv_set_preferences(&new_prefs);
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}
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}
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/* calculates display lines */
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tv_check_header_and_footer();
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display_lines = tv_calc_display_lines();
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if (!is_executing)
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return;
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is_executing = false;
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#else
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(void)oldp;
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/* REAL fixed pitch :) all chars use up 1 cell */
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display_lines = 2;
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#endif
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#ifdef HAVE_LCD_BITMAP
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col_width = 2 * rb->font_get_width(prefs->font, ' ');
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#else
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col_width = 1;
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#endif
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max_windows = (prefs->view_mode == NARROW)? 1: TV_WINDOWS_PER_SCREEN;
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if (cur_window >= max_windows)
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cur_window = 0;
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window_width = LCD_WIDTH;
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#ifdef HAVE_LCD_BITMAP
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need_scrollbar = false;
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start_width = 0;
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tv_seek_top();
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tv_set_read_conditions(max_windows, window_width);
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if (tv_traverse_lines() && prefs->scrollbar_mode)
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{
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need_scrollbar = true;
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start_width = TV_SCROLLBAR_WIDTH;
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}
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tv_seek_top();
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#else
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start_width = 1;
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#endif
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window_width -= start_width;
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window_columns = window_width / col_width;
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cur_column = 0;
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tv_set_read_conditions(max_windows, window_width);
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}
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bool tv_init_window(unsigned char *buf, size_t bufsize, size_t *used_size)
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{
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tv_add_preferences_change_listner(tv_change_preferences);
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if (!tv_init_text_reader(buf, bufsize, used_size))
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return false;
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prefs = tv_get_preferences();
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return true;
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}
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void tv_finalize_window(void)
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{
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tv_finalize_text_reader();
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}
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void tv_move_window(int window_delta, int column_delta)
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{
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cur_window += window_delta;
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cur_column += column_delta;
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if (cur_window < 0)
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{
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cur_window = 0;
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cur_column = 0;
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}
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else if (cur_window >= max_windows)
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{
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cur_window = max_windows - 1;
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cur_column = 0;
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}
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if (cur_column < 0)
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{
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if (cur_window == 0)
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cur_column = 0;
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else
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{
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cur_window--;
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cur_column = window_columns - 1;
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}
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}
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else
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{
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if (cur_window == max_windows - 1)
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cur_column = 0;
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else if (cur_column >= window_columns)
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{
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cur_window++;
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cur_column = 0;
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}
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}
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}
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