From 017121b0816250ddcc8a08746a6f140e48ca2d9e Mon Sep 17 00:00:00 2001 From: Thomas White Date: Sat, 8 Sep 2012 11:07:54 +0200 Subject: Plug in stylesheets and load/save --- src/stylesheet.c | 247 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 247 insertions(+) create mode 100644 src/stylesheet.c (limited to 'src/stylesheet.c') diff --git a/src/stylesheet.c b/src/stylesheet.c new file mode 100644 index 0000000..8cf519f --- /dev/null +++ b/src/stylesheet.c @@ -0,0 +1,247 @@ +/* + * stylesheet.c + * + * Colloquium - A tiny presentation program + * + * Copyright (c) 2011 Thomas White + * + * 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 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + */ + + +#ifdef HAVE_CONFIG_H +#include +#endif + +#include +#include +#include +#include + +#include "presentation.h" +#include "stylesheet.h" +#include "loadsave.h" + + +struct style *new_style(StyleSheet *ss, const char *name) +{ + struct style *sty; + int n; + struct style **styles_new; + + sty = calloc(1, sizeof(*sty)); + if ( sty == NULL ) return NULL; + + sty->name = strdup(name); + + n = ss->n_styles; + styles_new = realloc(ss->styles, (n+1)*sizeof(sty)); + if ( styles_new == NULL ) { + free(sty->name); + free(sty); + return NULL; + } + ss->styles = styles_new; + ss->styles[n] = sty; + ss->n_styles = n+1; + + return sty; +} + + +void free_stylesheet(StyleSheet *ss) +{ + int i; + + for ( i=0; in_styles; i++ ) { + free(ss->styles[i]->name); + free(ss->styles[i]); + } + + free(ss->styles); + free(ss); +} + + +void default_stylesheet(StyleSheet *ss) +{ + struct style *sty; + + /* Default style must be first */ + sty = new_style(ss, "Default"); + sty->lop.margin_l = 20.0; + sty->lop.margin_r = 20.0; + sty->lop.margin_t = 20.0; + sty->lop.margin_b = 20.0; + + sty = new_style(ss, "Slide title"); + sty->lop.margin_l = 20.0; + sty->lop.margin_r = 20.0; + sty->lop.margin_t = 20.0; + sty->lop.margin_b = 20.0; +} + + +static int read_style(struct style *sty, struct ds_node *root) +{ + get_field_f(root, "margin_l", &sty->lop.margin_l); + get_field_f(root, "margin_r", &sty->lop.margin_r); + get_field_f(root, "margin_t", &sty->lop.margin_t); + get_field_f(root, "margin_b", &sty->lop.margin_b); + + return 0; +} + + +StyleSheet *tree_to_stylesheet(struct ds_node *root) +{ + StyleSheet *ss; + struct ds_node *node; + int i; + + ss = new_stylesheet(); + if ( ss == NULL ) return NULL; + + node = find_node(root, "styles", 0); + if ( node == NULL ) { + fprintf(stderr, "Couldn't find styles\n"); + free_stylesheet(ss); + return NULL; + } + + for ( i=0; in_children; i++ ) { + + struct style *ns; + char *v; + + get_field_s(node->children[i], "name", &v); + if ( v == NULL ) { + fprintf(stderr, "No name for style '%s'\n", + node->children[i]->key); + continue; + } + + ns = new_style(ss, v); + if ( ns == NULL ) { + fprintf(stderr, "Couldn't create style for '%s'\n", + node->children[i]->key); + continue; + } + + if ( read_style(ns, node->children[i]) ) { + fprintf(stderr, "Couldn't read style '%s'\n", v); + continue; + } + + } + + node = find_node(root, "bgblocks", 0); + if ( node == NULL ) { + fprintf(stderr, "Couldn't find bgblocks\n"); + free_stylesheet(ss); + return NULL; + } + + return ss; +} + + +StyleSheet *new_stylesheet() +{ + StyleSheet *ss; + + ss = calloc(1, sizeof(struct _stylesheet)); + if ( ss == NULL ) return NULL; + + ss->n_styles = 0; + ss->styles = NULL; + + return ss; +} + + +int save_stylesheet(StyleSheet *ss, const char *filename) +{ + FILE *fh; + struct serializer ser; + + fh = fopen(filename, "w"); + if ( fh == NULL ) return 1; + + /* Set up the serializer */ + ser.fh = fh; + ser.stack_depth = 0; + ser.prefix = NULL; + + fprintf(fh, "# Colloquium style sheet file\n"); + serialize_f(&ser, "version", 0.1); + + serialize_start(&ser, "stylesheet"); + write_stylesheet(ss, &ser); + serialize_end(&ser); + + return 0; +} + + +StyleSheet *load_stylesheet(const char *filename) +{ + StyleSheet *ss; + + ss = new_stylesheet(); + if ( ss == NULL ) return NULL; + + /* FIXME: Implement this */ + + return ss; +} + + +void write_stylesheet(StyleSheet *ss, struct serializer *ser) +{ + int i; + + serialize_start(ser, "styles"); + for ( i=0; in_styles; i++ ) { + + struct style *s = ss->styles[i]; + char id[32]; + + snprintf(id, 31, "%i", i); + + serialize_start(ser, id); + serialize_s(ser, "name", s->name); + serialize_f(ser, "margin_l", s->lop.margin_l); + serialize_f(ser, "margin_r", s->lop.margin_r); + serialize_f(ser, "margin_t", s->lop.margin_t); + serialize_f(ser, "margin_b", s->lop.margin_b); + serialize_end(ser); + + } + serialize_end(ser); +} + + +struct style *find_style(StyleSheet *ss, const char *name) +{ + int i; + for ( i=0; in_styles; i++ ) { + if ( strcmp(ss->styles[i]->name, name) == 0 ) { + return ss->styles[i]; + } + } + + return NULL; +} -- cgit v1.2.3