540 lines
13 KiB
C
540 lines
13 KiB
C
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/*
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* Copyright (c) 1997-2006 Motoyuki Kasahara
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "build-pre.h"
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#include "eb.h"
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#include "error.h"
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#include "font.h"
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#include "build-post.h"
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/*
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* Initialize all fonts in the current subbook.
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*/
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void
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eb_initialize_fonts(EB_Book *book)
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{
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EB_Subbook *subbook;
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EB_Font *font;
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int i;
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LOG(("in: eb_initialize_fonts(book=%d)", (int)book->code));
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subbook = book->subbook_current;
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for (i = 0, font = subbook->narrow_fonts; i < EB_MAX_FONTS; i++, font++) {
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font->font_code = EB_FONT_INVALID;
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font->initialized = 0;
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font->start = -1;
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font->end = -1;
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font->page = 0;
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font->glyphs = NULL;
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zio_initialize(&font->zio);
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}
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for (i = 0, font = subbook->wide_fonts; i < EB_MAX_FONTS; i++, font++) {
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font->font_code = EB_FONT_INVALID;
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font->initialized = 0;
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font->start = -1;
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font->end = -1;
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font->page = 0;
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font->glyphs = NULL;
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zio_initialize(&font->zio);
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}
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LOG(("out: eb_initialize_fonts()"));
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}
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/*
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* Load font files.
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*/
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void
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eb_load_font_headers(EB_Book *book)
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{
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EB_Error_Code error_code;
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EB_Subbook *subbook;
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EB_Font_Code i;
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LOG(("in: eb_load_fonts(book=%d)", (int)book->code));
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subbook = book->subbook_current;
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/*
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* Load narrow font headers.
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*/
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for (i = 0; i < EB_MAX_FONTS; i++) {
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if (subbook->narrow_fonts[i].font_code == EB_FONT_INVALID
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|| subbook->narrow_fonts[i].initialized)
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continue;
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error_code = eb_open_narrow_font_file(book, i);
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if (error_code == EB_SUCCESS)
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error_code = eb_load_narrow_font_header(book, i);
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if (error_code != EB_SUCCESS)
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subbook->narrow_fonts[i].font_code = EB_FONT_INVALID;
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subbook->narrow_fonts[i].initialized = 1;
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zio_close(&subbook->narrow_fonts[i].zio);
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}
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/*
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* Load wide font header.
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*/
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for (i = 0; i < EB_MAX_FONTS; i++) {
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if (subbook->wide_fonts[i].font_code == EB_FONT_INVALID
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|| subbook->wide_fonts[i].initialized)
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continue;
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error_code = eb_open_wide_font_file(book, i);
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if (error_code == EB_SUCCESS)
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error_code = eb_load_wide_font_header(book, i);
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if (error_code != EB_SUCCESS)
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subbook->wide_fonts[i].font_code = EB_FONT_INVALID;
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subbook->wide_fonts[i].initialized = 1;
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zio_close(&subbook->wide_fonts[i].zio);
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}
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LOG(("out: eb_load_font_headers()"));
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}
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/*
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* Finalize all fonts in the current subbook.
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*/
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void
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eb_finalize_fonts(EB_Book *book)
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{
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EB_Subbook *subbook;
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EB_Font *font;
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int i;
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LOG(("in: eb_finalize_fonts(book=%d)", (int)book->code));
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subbook = book->subbook_current;
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for (i = 0, font = subbook->narrow_fonts; i < EB_MAX_FONTS; i++, font++) {
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zio_finalize(&font->zio);
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if (font->glyphs != NULL) {
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free(font->glyphs);
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font->glyphs = NULL;
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}
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}
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for (i = 0, font = subbook->wide_fonts; i < EB_MAX_FONTS; i++, font++) {
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zio_finalize(&font->zio);
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if (font->glyphs != NULL) {
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free(font->glyphs);
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font->glyphs = NULL;
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}
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}
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LOG(("out: eb_finalize_fonts()"));
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}
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/*
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* Look up the height of the current font of the current subbook in
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* `book'.
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*/
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EB_Error_Code
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eb_font(EB_Book *book, EB_Font_Code *font_code)
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{
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EB_Error_Code error_code;
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eb_lock(&book->lock);
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LOG(("in: eb_font(book=%d)", (int)book->code));
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/*
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* Current subbook must have been set.
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*/
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if (book->subbook_current == NULL) {
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error_code = EB_ERR_NO_CUR_SUB;
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goto failed;
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}
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/*
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* Look up the height of the current font.
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*/
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if (book->subbook_current->narrow_current != NULL)
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*font_code = book->subbook_current->narrow_current->font_code;
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else if (book->subbook_current->wide_current != NULL)
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*font_code = book->subbook_current->wide_current->font_code;
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else {
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error_code = EB_ERR_NO_CUR_FONT;
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goto failed;
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}
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LOG(("out: eb_font(font_code=%d) = %s", (int)*font_code,
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eb_error_string(EB_SUCCESS)));
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eb_unlock(&book->lock);
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return EB_SUCCESS;
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/*
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* An error occurs...
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*/
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failed:
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*font_code = EB_FONT_INVALID;
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LOG(("out: eb_font() = %s", eb_error_string(error_code)));
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eb_unlock(&book->lock);
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return error_code;
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}
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/*
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* Set the font with `font_code' as the current font of the current
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* subbook in `book'.
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*/
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EB_Error_Code
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eb_set_font(EB_Book *book, EB_Font_Code font_code)
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{
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EB_Error_Code error_code;
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EB_Subbook *subbook;
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eb_lock(&book->lock);
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LOG(("in: eb_set_font(book=%d, font_code=%d)", (int)book->code,
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(int)font_code));
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/*
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* Check `font_code'.
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*/
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if (font_code < 0 || EB_MAX_FONTS <= font_code) {
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error_code = EB_ERR_NO_SUCH_FONT;
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goto failed;
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}
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/*
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* Current subbook must have been set.
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*/
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subbook = book->subbook_current;
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if (subbook == NULL) {
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error_code = EB_ERR_NO_CUR_SUB;
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goto failed;
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}
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/*
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* If the current font is the font with `font_code', return immediately.
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* Otherwise close the current font and continue.
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*/
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if (subbook->narrow_current != NULL) {
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if (subbook->narrow_current->font_code == font_code)
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goto succeeded;
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if (book->disc_code == EB_DISC_EPWING)
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zio_close(&subbook->narrow_current->zio);
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subbook->narrow_current = NULL;
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}
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if (subbook->wide_current != NULL) {
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if (subbook->wide_current->font_code == font_code)
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goto succeeded;
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if (book->disc_code == EB_DISC_EPWING)
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zio_close(&subbook->wide_current->zio);
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subbook->wide_current = NULL;
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}
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/*
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* Set the current font.
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*/
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if (subbook->narrow_fonts[font_code].font_code != EB_FONT_INVALID)
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subbook->narrow_current = subbook->narrow_fonts + font_code;
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if (subbook->wide_fonts[font_code].font_code != EB_FONT_INVALID)
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subbook->wide_current = subbook->wide_fonts + font_code;
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if (subbook->narrow_current == NULL && subbook->wide_current == NULL) {
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error_code = EB_ERR_NO_SUCH_FONT;
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goto failed;
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}
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/*
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* Initialize current font informtaion.
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*/
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if (subbook->narrow_current != NULL) {
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error_code = eb_open_narrow_font_file(book, font_code);
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if (error_code != EB_SUCCESS)
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goto failed;
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}
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if (subbook->wide_current != NULL) {
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error_code = eb_open_wide_font_file(book, font_code);
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if (error_code != EB_SUCCESS)
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goto failed;
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}
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succeeded:
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LOG(("out: eb_set_font() = %s", eb_error_string(EB_SUCCESS)));
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eb_unlock(&book->lock);
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return EB_SUCCESS;
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/*
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* An error occurs...
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*/
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failed:
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eb_unset_font(book);
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LOG(("out: eb_set_font() = %s", eb_error_string(error_code)));
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return error_code;
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}
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/*
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* Unset the font in the current subbook in `book'.
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*/
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void
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eb_unset_font(EB_Book *book)
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{
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EB_Subbook *subbook;
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eb_lock(&book->lock);
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LOG(("in: eb_unset_font(book=%d)", (int)book->code));
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subbook = book->subbook_current;
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if (subbook == NULL)
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goto succeeded;
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/*
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* Close font files.
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*/
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if (subbook->narrow_current != NULL) {
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zio_close(&subbook->narrow_current->zio);
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if (subbook->narrow_current->glyphs != NULL) {
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free(subbook->narrow_current->glyphs);
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subbook->narrow_current->glyphs = NULL;
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}
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}
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if (subbook->wide_current != NULL) {
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zio_close(&subbook->wide_current->zio);
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if (subbook->wide_current->glyphs != NULL) {
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free(subbook->wide_current->glyphs);
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subbook->wide_current->glyphs = NULL;
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}
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}
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book->subbook_current->narrow_current = NULL;
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book->subbook_current->wide_current = NULL;
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succeeded:
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LOG(("out: eb_unset_font()"));
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eb_unlock(&book->lock);
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}
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/*
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* Make a list of fonts in the current subbook in `book'.
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*/
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EB_Error_Code
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eb_font_list(EB_Book *book, EB_Font_Code *font_list, int *font_count)
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{
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EB_Error_Code error_code;
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EB_Subbook *subbook;
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EB_Font_Code *list_p;
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int i;
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eb_lock(&book->lock);
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LOG(("in: eb_font_list(book=%d)", (int)book->code));
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/*
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* Current subbook must have been set.
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*/
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subbook = book->subbook_current;
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if (subbook == NULL) {
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error_code = EB_ERR_NO_CUR_SUB;
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goto failed;
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}
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/*
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* Scan the font table in the book.
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*/
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subbook = book->subbook_current;
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list_p = font_list;
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*font_count = 0;
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for (i = 0; i < EB_MAX_FONTS; i++) {
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if (subbook->narrow_fonts[i].font_code != EB_FONT_INVALID
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|| subbook->wide_fonts[i].font_code != EB_FONT_INVALID) {
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*list_p++ = i;
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*font_count += 1;
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}
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}
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LOG(("out: eb_font(font_count=%d) = %s", *font_count,
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eb_error_string(EB_SUCCESS)));
|
||
|
|
eb_unlock(&book->lock);
|
||
|
|
|
||
|
|
return EB_SUCCESS;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* An error occurs...
|
||
|
|
*/
|
||
|
|
failed:
|
||
|
|
LOG(("out: eb_font_list() = %s", eb_error_string(error_code)));
|
||
|
|
eb_unlock(&book->lock);
|
||
|
|
return error_code;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Test whether the current subbook in `book' has a font with
|
||
|
|
* `font_code' or not.
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
eb_have_font(EB_Book *book, EB_Font_Code font_code)
|
||
|
|
{
|
||
|
|
EB_Subbook *subbook;
|
||
|
|
|
||
|
|
eb_lock(&book->lock);
|
||
|
|
LOG(("in: eb_have_font(book=%d, font_code=%d)", (int)book->code,
|
||
|
|
(int)font_code));
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Check `font_code'.
|
||
|
|
*/
|
||
|
|
if (font_code < 0 || EB_MAX_FONTS <= font_code)
|
||
|
|
goto failed;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Current subbook must have been set.
|
||
|
|
*/
|
||
|
|
subbook = book->subbook_current;
|
||
|
|
if (subbook == NULL)
|
||
|
|
goto failed;
|
||
|
|
|
||
|
|
if (subbook->narrow_fonts[font_code].font_code == EB_FONT_INVALID
|
||
|
|
&& subbook->wide_fonts[font_code].font_code == EB_FONT_INVALID)
|
||
|
|
goto failed;
|
||
|
|
|
||
|
|
LOG(("out: eb_have_font() = %d", 1));
|
||
|
|
eb_unlock(&book->lock);
|
||
|
|
|
||
|
|
return 1;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* An error occurs...
|
||
|
|
*/
|
||
|
|
failed:
|
||
|
|
LOG(("out: eb_have_font() = %d", 0));
|
||
|
|
eb_unlock(&book->lock);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Get height of the font `font_code' in the current subbook of `book'.
|
||
|
|
*/
|
||
|
|
EB_Error_Code
|
||
|
|
eb_font_height(EB_Book *book, int *height)
|
||
|
|
{
|
||
|
|
EB_Error_Code error_code;
|
||
|
|
EB_Font_Code font_code;
|
||
|
|
|
||
|
|
eb_lock(&book->lock);
|
||
|
|
LOG(("in: eb_font_height(book=%d)", (int)book->code));
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Current subbook must have been set.
|
||
|
|
*/
|
||
|
|
if (book->subbook_current == NULL) {
|
||
|
|
error_code = EB_ERR_NO_CUR_SUB;
|
||
|
|
goto failed;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The narrow font must exist in the current subbook.
|
||
|
|
*/
|
||
|
|
if (book->subbook_current->narrow_current != NULL)
|
||
|
|
font_code = book->subbook_current->narrow_current->font_code;
|
||
|
|
else if (book->subbook_current->wide_current != NULL)
|
||
|
|
font_code = book->subbook_current->wide_current->font_code;
|
||
|
|
else {
|
||
|
|
error_code = EB_ERR_NO_CUR_FONT;
|
||
|
|
goto failed;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Calculate height.
|
||
|
|
*/
|
||
|
|
error_code = eb_font_height2(font_code, height);
|
||
|
|
if (error_code != EB_SUCCESS)
|
||
|
|
goto failed;
|
||
|
|
|
||
|
|
LOG(("out: eb_font_heigt(height=%d) = %s", *height,
|
||
|
|
eb_error_string(EB_SUCCESS)));
|
||
|
|
eb_unlock(&book->lock);
|
||
|
|
|
||
|
|
return EB_SUCCESS;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* An error occurs...
|
||
|
|
*/
|
||
|
|
failed:
|
||
|
|
*height = 0;
|
||
|
|
LOG(("out: eb_font_height() = %s", eb_error_string(error_code)));
|
||
|
|
eb_unlock(&book->lock);
|
||
|
|
return error_code;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Get height of the font `font_code'.
|
||
|
|
*/
|
||
|
|
EB_Error_Code
|
||
|
|
eb_font_height2(EB_Font_Code font_code, int *height)
|
||
|
|
{
|
||
|
|
EB_Error_Code error_code;
|
||
|
|
|
||
|
|
LOG(("in: eb_font_height2(font_code=%d)", (int)font_code));
|
||
|
|
|
||
|
|
switch (font_code) {
|
||
|
|
case EB_FONT_16:
|
||
|
|
*height = EB_HEIGHT_FONT_16;
|
||
|
|
break;
|
||
|
|
case EB_FONT_24:
|
||
|
|
*height = EB_HEIGHT_FONT_24;
|
||
|
|
break;
|
||
|
|
case EB_FONT_30:
|
||
|
|
*height = EB_HEIGHT_FONT_30;
|
||
|
|
break;
|
||
|
|
case EB_FONT_48:
|
||
|
|
*height = EB_HEIGHT_FONT_48;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
error_code = EB_ERR_NO_SUCH_FONT;
|
||
|
|
goto failed;
|
||
|
|
}
|
||
|
|
|
||
|
|
LOG(("out: eb_font_heigt2(height=%d) = %s", *height,
|
||
|
|
eb_error_string(EB_SUCCESS)));
|
||
|
|
|
||
|
|
return EB_SUCCESS;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* An error occurs...
|
||
|
|
*/
|
||
|
|
failed:
|
||
|
|
*height = 0;
|
||
|
|
LOG(("out: eb_font_height2() = %s", eb_error_string(error_code)));
|
||
|
|
return error_code;
|
||
|
|
}
|