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path: root/apps/plugins/textviewer/tv_text_processor.c
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Diffstat (limited to 'apps/plugins/textviewer/tv_text_processor.c')
-rw-r--r--apps/plugins/textviewer/tv_text_processor.c505
1 files changed, 0 insertions, 505 deletions
diff --git a/apps/plugins/textviewer/tv_text_processor.c b/apps/plugins/textviewer/tv_text_processor.c
deleted file mode 100644
index 3ad80db..0000000
--- a/apps/plugins/textviewer/tv_text_processor.c
+++ /dev/null
@@ -1,505 +0,0 @@
-/***************************************************************************
- * __________ __ ___.
- * Open \______ \ ____ ____ | | _\_ |__ _______ ___
- * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
- * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
- * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
- * \/ \/ \/ \/ \/
- * $Id$
- *
- * Copyright (C) 2002 Gilles Roux, 2003 Garrett Derner
- *
- * 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_drawtext.h"
-
-#define WRAP_TRIM 44 /* Max number of spaces to trim (arbitrary) */
-#define NARROW_MAX_COLUMNS 64 /* Max displayable string len [narrow] (over-estimate) */
-#define WIDE_MAX_COLUMNS 128 /* Max displayable string len [wide] (over-estimate) */
-#define MAX_WIDTH 910 /* Max line length in WIDE mode */
-#define READ_PREV_ZONE (block_size*9/10) /* Arbitrary number less than SMALL_BLOCK_SIZE */
-#define SMALL_BLOCK_SIZE block_size /* Smallest file chunk we will read */
-#define LARGE_BLOCK_SIZE (block_size << 1) /* Preferable size of file chunk to read */
-#define TOP_SECTOR buffer
-#define MID_SECTOR (buffer + SMALL_BLOCK_SIZE)
-#define BOTTOM_SECTOR (buffer + (SMALL_BLOCK_SIZE << 1))
-#undef SCROLLBAR_WIDTH
-#define SCROLLBAR_WIDTH rb->global_settings->scrollbar_width
-#define MAX_PAGE 9999
-
-/* Is a scrollbar called for on the current screen? */
-#define NEED_SCROLLBAR() \
- ((!(ONE_SCREEN_FITS_ALL())) && (prefs.scrollbar_mode==SB_ON))
-
-static void increment_current_line(void)
-{
- if (cline < display_lines)
- cline++;
- else if (cpage < MAX_PAGE)
- {
- cpage++;
- cline = 1;
- }
-}
-
-static void decrement_current_line(void)
-{
- if (cline > 1)
- cline--;
- else if (cpage > 1)
- {
- cpage--;
- cline = display_lines;
- }
-}
-
-static void viewer_scroll_up(void)
-{
- unsigned char *p;
-
- p = find_prev_line(screen_top_ptr);
- if (p == NULL && !BUFFER_BOF()) {
- read_and_synch(-1);
- p = find_prev_line(screen_top_ptr);
- }
- if (p != NULL)
- screen_top_ptr = p;
-
- decrement_current_line();
-}
-
-static void viewer_scroll_down(bool autoscroll)
-{
- if (cpage == lpage)
- return;
-
- if (next_line_ptr != NULL)
- screen_top_ptr = next_line_ptr;
-
- if (prefs.scroll_mode == LINE || autoscroll)
- increment_current_line();
-}
-
-static void viewer_scroll_to_top_line(void)
-{
- int line;
-
- for (line = cline; line > 1; line--)
- viewer_scroll_up();
-}
-
-#ifdef HAVE_LCD_BITMAP
-static void viewer_scrollbar(void) {
- int items, min_shown, max_shown, sb_begin_y, sb_height;
-
- items = (int) file_size; /* (SH1 int is same as long) */
- min_shown = (int) file_pos + (screen_top_ptr - buffer);
-
- if (next_screen_ptr == NULL)
- max_shown = items;
- else
- max_shown = min_shown + (next_screen_ptr - screen_top_ptr);
-
- sb_begin_y = header_height;
- sb_height = LCD_HEIGHT - header_height - footer_height;
-
- rb->gui_scrollbar_draw(rb->screens[SCREEN_MAIN],0, sb_begin_y,
- SCROLLBAR_WIDTH-1, sb_height,
- items, min_shown, max_shown, VERTICAL);
-}
-
-static void viewer_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 - pf->height, file_name);
-}
-
-static void viewer_show_footer(void)
-{
- 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)
- {
- unsigned char buf[12];
-
- if (cline == 1)
- rb->snprintf(buf, sizeof(buf), "%d", cpage);
- else
- rb->snprintf(buf, sizeof(buf), "%d - %d", cpage, cpage+1);
-
- rb->lcd_putsxy(0, LCD_HEIGHT - footer_height, buf);
- }
-}
-#endif
-
-void viewer_draw(int col)
-{
- int i, j, k, line_len, line_width, spaces, left_col=0;
- int width, extra_spaces, indent_spaces, spaces_per_word;
- bool multiple_spacing, line_is_short;
- unsigned short ch;
- unsigned char *str, *oldstr;
- unsigned char *line_begin;
- unsigned char *line_end;
- unsigned char c;
- unsigned char scratch_buffer[max_columns + 1];
- unsigned char utf8_buffer[max_columns*4 + 1];
- unsigned char *endptr;
-
- /* If col==-1 do all calculations but don't display */
- if (col != -1) {
-#ifdef HAVE_LCD_BITMAP
- left_col = prefs.need_scrollbar? SCROLLBAR_WIDTH:0;
-#else
- left_col = 0;
-#endif
- rb->lcd_clear_display();
- }
- max_line_len = 0;
- line_begin = line_end = screen_top_ptr;
-
- for (i = 0; i < display_lines; i++) {
- if (BUFFER_OOB(line_end))
- {
- if (lpage == cpage)
- break; /* Happens after display last line at BUFFER_EOF() */
-
- if (lpage == 0 && cline == 1)
- {
- lpage = cpage;
- last_screen_top_ptr = screen_top_ptr;
- last_file_pos = file_pos;
- }
- }
-
- get_next_line_position(&line_begin, &line_end, &line_is_short);
- if (line_end == NULL)
- {
- if (BUFFER_OOB(line_begin))
- break;
- line_end = buffer_end + 1;
- }
-
- line_len = line_end - line_begin;
-
- /* calculate line_len */
- str = oldstr = line_begin;
- j = -1;
- while (str < line_end) {
- oldstr = str;
- str = crop_at_width(str);
- j++;
- }
- line_width = j*draw_columns;
- while (oldstr < line_end) {
- oldstr = get_ucs(oldstr, &ch);
- line_width += glyph_width(ch);
- }
-
- if (prefs.line_mode == JOIN) {
- if (line_begin[0] == 0) {
- line_begin++;
- if (prefs.word_mode == CHOP)
- line_end++;
- else
- line_len--;
- }
- for (j=k=spaces=0; j < line_len; j++) {
- if (k == max_columns)
- break;
-
- c = line_begin[j];
- switch (c) {
- case ' ':
- spaces++;
- break;
- case 0:
- spaces = 0;
- scratch_buffer[k++] = ' ';
- break;
- default:
- while (spaces) {
- spaces--;
- scratch_buffer[k++] = ' ';
- if (k == max_columns - 1)
- break;
- }
- scratch_buffer[k++] = c;
- break;
- }
- }
- if (col != -1) {
- scratch_buffer[k] = 0;
- endptr = decode2utf8(scratch_buffer, utf8_buffer, col, draw_columns);
- *endptr = 0;
- }
- }
- else if (prefs.line_mode == REFLOW) {
- if (line_begin[0] == 0) {
- line_begin++;
- if (prefs.word_mode == CHOP)
- line_end++;
- else
- line_len--;
- }
-
- indent_spaces = 0;
- if (!line_is_short) {
- multiple_spacing = false;
- width=spaces=0;
- for (str = line_begin; str < line_end; ) {
- str = get_ucs(str, &ch);
- switch (ch) {
- case ' ':
- case 0:
- if ((str == line_begin) && (prefs.word_mode==WRAP))
- /* special case: indent the paragraph,
- * don't count spaces */
- indent_spaces = par_indent_spaces;
- else if (!multiple_spacing)
- spaces++;
- multiple_spacing = true;
- break;
- default:
- multiple_spacing = false;
- width += glyph_width(ch);
- break;
- }
- }
- if (multiple_spacing) spaces--;
-
- if (spaces) {
- /* total number of spaces to insert between words */
- extra_spaces = (max_width-width)/glyph_width(' ')
- - indent_spaces;
- /* number of spaces between each word*/
- spaces_per_word = extra_spaces / spaces;
- /* number of words with n+1 spaces (to fill up) */
- extra_spaces = extra_spaces % spaces;
- if (spaces_per_word > 2) { /* too much spacing is awful */
- spaces_per_word = 3;
- extra_spaces = 0;
- }
- } else { /* this doesn't matter much... no spaces anyway */
- spaces_per_word = extra_spaces = 0;
- }
- } else { /* end of a paragraph: don't fill line */
- spaces_per_word = 1;
- extra_spaces = 0;
- }
-
- multiple_spacing = false;
- for (j=k=spaces=0; j < line_len; j++) {
- if (k == max_columns)
- break;
-
- c = line_begin[j];
- switch (c) {
- case ' ':
- case 0:
- if (j==0 && prefs.word_mode==WRAP) { /* indent paragraph */
- for (j=0; j<par_indent_spaces; j++)
- scratch_buffer[k++] = ' ';
- j=0;
- }
- else if (!multiple_spacing) {
- for (width = spaces<extra_spaces ? -1:0; width < spaces_per_word; width++)
- scratch_buffer[k++] = ' ';
- spaces++;
- }
- multiple_spacing = true;
- break;
- default:
- scratch_buffer[k++] = c;
- multiple_spacing = false;
- break;
- }
- }
- if (col != -1) {
- scratch_buffer[k] = 0;
- endptr = decode2utf8(scratch_buffer, utf8_buffer, col, draw_columns);
- *endptr = 0;
- }
- }
- else { /* prefs.line_mode != JOIN && prefs.line_mode != REFLOW */
- if (col != -1)
- if (line_width > col) {
- str = oldstr = line_begin;
- k = col;
- width = 0;
- while( (width<draw_columns) && (oldstr<line_end) )
- {
- oldstr = get_ucs(oldstr, &ch);
- if (k > 0) {
- k -= glyph_width(ch);
- line_begin = oldstr;
- } else {
- width += glyph_width(ch);
- }
- }
-
- if(prefs.view_mode==WIDE)
- endptr = rb->iso_decode(line_begin, utf8_buffer,
- prefs.encoding, oldstr-line_begin);
- else
- endptr = rb->iso_decode(line_begin, utf8_buffer,
- prefs.encoding, line_end-line_begin);
- *endptr = 0;
- }
- }
- if (col != -1 && line_width > col)
- {
- int dpage = (cline+i <= display_lines)?cpage:cpage+1;
- int dline = cline+i - ((cline+i <= display_lines)?0:display_lines);
- bool bflag = (viewer_find_bookmark(dpage, dline) >= 0);
-#ifdef HAVE_LCD_BITMAP
- int dy = i * pf->height + header_height;
-#endif
- if (bflag)
-#ifdef HAVE_LCD_BITMAP
- {
- rb->lcd_set_drawmode(DRMODE_BG|DRMODE_FG);
- rb->lcd_fillrect(left_col, dy, LCD_WIDTH, pf->height);
- rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
- }
- rb->lcd_putsxy(left_col, dy, utf8_buffer);
- rb->lcd_set_drawmode(DRMODE_SOLID);
-#else
- {
- rb->lcd_puts(left_col, i, BOOKMARK_ICON);
- }
- rb->lcd_puts(left_col+1, i, utf8_buffer);
-#endif
- }
- if (line_width > max_line_len)
- max_line_len = line_width;
-
- if (i == 0)
- next_line_ptr = line_end;
- }
- next_screen_ptr = line_end;
- if (BUFFER_OOB(next_screen_ptr))
- next_screen_ptr = NULL;
-
-#ifdef HAVE_LCD_BITMAP
- next_screen_to_draw_ptr = prefs.page_mode==OVERLAP? line_begin: next_screen_ptr;
-
- if (prefs.need_scrollbar)
- viewer_scrollbar();
-#else
- next_screen_to_draw_ptr = next_screen_ptr;
-#endif
-
-#ifdef HAVE_LCD_BITMAP
- /* show header */
- viewer_show_header();
-
- /* show footer */
- viewer_show_footer();
-#endif
-
- if (col != -1)
- rb->lcd_update();
-}
-
-#ifdef HAVE_LCD_BITMAP
-static void init_need_scrollbar(void) {
- /* Call viewer_draw in quiet mode to initialize next_screen_ptr,
- and thus ONE_SCREEN_FITS_ALL(), and thus NEED_SCROLLBAR() */
- viewer_draw(-1);
- prefs.need_scrollbar = NEED_SCROLLBAR();
- draw_columns = prefs.need_scrollbar? display_columns-SCROLLBAR_WIDTH : display_columns;
- par_indent_spaces = draw_columns/(5*glyph_width(' '));
- calc_max_width();
-}
-
-static void init_header_and_footer(void)
-{
- header_height = 0;
- footer_height = 0;
- if (rb->global_settings->statusbar == STATUSBAR_TOP)
- {
- if (prefs.header_mode == HD_SBAR || prefs.header_mode == HD_BOTH)
- header_height = STATUSBAR_HEIGHT;
-
- if (prefs.footer_mode == FT_SBAR)
- prefs.footer_mode = FT_NONE;
- else if (prefs.footer_mode == FT_BOTH)
- prefs.footer_mode = FT_PAGE;
- }
- else if (rb->global_settings->statusbar == STATUSBAR_BOTTOM)
- {
- if (prefs.footer_mode == FT_SBAR || prefs.footer_mode == FT_BOTH)
- footer_height = STATUSBAR_HEIGHT;
-
- if (prefs.header_mode == HD_SBAR)
- prefs.header_mode = HD_NONE;
- else if (prefs.header_mode == HD_BOTH)
- prefs.header_mode = HD_PATH;
- }
- else /* STATUSBAR_OFF || STATUSBAR_CUSTOM */
- {
- if (prefs.header_mode == HD_SBAR)
- prefs.header_mode = HD_NONE;
- else if (prefs.header_mode == HD_BOTH)
- prefs.header_mode = HD_PATH;
-
- if (prefs.footer_mode == FT_SBAR)
- prefs.footer_mode = FT_NONE;
- else if (prefs.footer_mode == FT_BOTH)
- prefs.footer_mode = FT_PAGE;
- }
-
- 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 += pf->height;
- if (prefs.footer_mode == FT_PAGE || prefs.footer_mode == FT_BOTH)
- footer_height += pf->height;
-
- display_lines = (LCD_HEIGHT - header_height - footer_height) / pf->height;
-
- lpage = 0;
- last_file_pos = 0;
- last_screen_top_ptr = NULL;
-}
-
-static void change_font(unsigned char *font)
-{
- unsigned char buf[MAX_PATH];
-
- if (font == NULL || *font == '\0')
- return;
-
- rb->snprintf(buf, MAX_PATH, "%s/%s.fnt", FONT_DIR, font);
- if (rb->font_load(NULL, buf) < 0)
- rb->splash(HZ/2, "font load failed.");
-}
-#endif
-
-/* When a file is UTF-8 file with BOM, if prefs.encoding is UTF-8,
- * then file size decreases only BOM_SIZE.
- */
-static void get_filesize(void)
-{
- file_size = rb->filesize(fd);
- if (file_size == -1)
- return;
-
- if (prefs.encoding == UTF_8 && is_bom)
- file_size -= BOM_SIZE;
-}
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