Plug mainwindow back in

1 files changed, 227 insertions, 0 deletions

diff --git a/src/presentation.c b/src/presentation.c
new file mode 100644
index 0000000..01a8fbf
--- /dev/null
+++ b/src/presentation.c
@@ -0,0 +1,227 @@
+/*
+ * presentation.c
+ *
+ * Colloquium - A tiny presentation program
+ *
+ * Copyright (c) 2012 Thomas White <taw@bitwiz.org.uk>
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <gtk/gtk.h>
+
+#include "presentation.h"
+#include "stylesheet.h"
+
+
+static int num_presentations = 0;
+
+
+void free_presentation(struct presentation *p)
+{
+	int i;
+	int final = 0;
+
+	for ( i=0; i<p->num_slides; i++ ) {
+		free_slide(p->slides[i]);
+	}
+
+	(*p->num_presentations)--;
+	if ( *p->num_presentations == 0 ) final = 1;
+
+	/* FIXME: Loads of stuff leaks here */
+	free(p->filename);
+	free(p);
+
+	if ( final ) {
+		gtk_main_quit();
+	}
+}
+
+
+int insert_slide(struct presentation *p, struct slide *new, int pos)
+{
+	struct slide **try;
+	
+	try = realloc(p->slides, (1+p->num_slides)*sizeof(struct slide *));
+	if ( try == NULL ) {
+		free(new);
+		return 1;
+	}
+	p->slides = try;
+	p->completely_empty = 0;
+
+	/* Insert into list.  Yuk yuk yuk etc. */
+	if ( (p->num_slides>1) && (pos<p->num_slides-1) ) {
+
+		int i;
+
+		for ( i=p->num_slides; i>pos+1; i-- ) {
+			p->slides[i] = p->slides[i-1];
+		}
+		p->slides[pos+1] = new;
+
+	} else if ( pos == p->num_slides-1 ) {
+
+		p->slides[pos+1] = new;
+
+	} else {
+		assert(pos == 0);
+		p->slides[pos] = new;
+	}
+
+	new->parent = p;
+	p->num_slides++;
+
+	return 0;
+}
+
+
+struct slide *new_slide()
+{
+	struct slide *new;
+
+	new = calloc(1, sizeof(struct slide));
+	if ( new == NULL ) return NULL;
+
+	new->rendered_edit = NULL;
+	new->rendered_proj = NULL;
+	new->rendered_thumb = NULL;
+
+	new->notes = strdup("");
+
+	return new;
+}
+
+
+void free_slide(struct slide *s)
+{
+	free(s);
+}
+
+
+struct slide *add_slide(struct presentation *p, int pos)
+{
+	struct slide *s = new_slide();
+	if ( insert_slide(p, s, pos) ) {
+		free_slide(s);
+		return NULL;
+	}
+
+	return s;
+}
+
+
+static char *safe_basename(const char *in)
+{
+	int i;
+	char *cpy;
+	char *res;
+
+	cpy = strdup(in);
+
+	/* Get rid of any trailing slashes */
+	for ( i=strlen(cpy)-1; i>0; i-- ) {
+		if ( cpy[i] == '/' ) {
+			cpy[i] = '\0';
+		} else {
+			break;
+		}
+	}
+
+	/* Find the base name */
+	for ( i=strlen(cpy)-1; i>0; i-- ) {
+		if ( cpy[i] == '/' ) {
+			i++;
+			break;
+		}
+	}
+
+	res = strdup(cpy+i);
+	/* If we didn't find a previous slash, i==0 so res==cpy */
+
+	free(cpy);
+
+	return res;
+}
+
+
+void get_titlebar_string(struct presentation *p)
+{
+	free(p->titlebar);
+
+	if ( p->filename == NULL ) {
+		p->titlebar = strdup("(untitled)");
+	} else {
+		p->titlebar = safe_basename(p->filename);
+	}
+}
+
+
+int slide_number(struct presentation *p, struct slide *s)
+{
+	int i;
+
+	for ( i=0; i<p->num_slides; i++ ) {
+		if ( p->slides[i] == s ) return i;
+	}
+
+	return p->num_slides;
+}
+
+
+struct presentation *new_presentation()
+{
+	struct presentation *new;
+
+	new = calloc(1, sizeof(struct presentation));
+
+	num_presentations++;
+	new->num_presentations = &num_presentations;
+
+	new->filename = NULL;
+	new->titlebar = NULL;
+	get_titlebar_string(new);
+
+	new->window = NULL;
+	new->ui = NULL;
+	new->action_group = NULL;
+	new->slideshow = NULL;
+	new->notes = NULL;
+
+	new->slide_width = 1024.0;
+	new->slide_height = 768.0;
+
+	/* Add one blank slide and view it */
+	new->num_slides = 0;
+	new->slides = NULL;
+	new->cur_edit_slide = NULL;
+	new->cur_proj_slide = NULL;
+
+	new->completely_empty = 1;
+
+	//new->ss = new_stylesheet();
+	//default_stylesheet(new->ss);
+
+	return new;
+}