diff options
author | Thomas White <taw@bitwiz.org.uk> | 2012-10-12 00:53:34 +0200 |
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committer | Thomas White <taw@bitwiz.org.uk> | 2012-10-12 00:53:34 +0200 |
commit | 350c51a006edba2a46e7f17bf05098b398a4cb80 (patch) | |
tree | b6a996032b7131eb72c5b070325c78a005087ed0 /src/frame.c | |
parent | eea7bf93ada2a57fad1dac3e5233f703d1af02ff (diff) |
Move "frame" to new module
Diffstat (limited to 'src/frame.c')
-rw-r--r-- | src/frame.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/src/frame.c b/src/frame.c new file mode 100644 index 0000000..637fff1 --- /dev/null +++ b/src/frame.c @@ -0,0 +1,84 @@ +/* + * frame.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 <assert.h> +#include <stdlib.h> + +#include "frame.h" + + +static int alloc_ro(struct frame *fr) +{ + struct frame **new_ro; + + new_ro = realloc(fr->rendering_order, + fr->max_ro*sizeof(struct frame *)); + if ( new_ro == NULL ) return 1; + + fr->rendering_order = new_ro; + + return 0; +} + + +struct frame *frame_new() +{ + struct frame *n; + + n = calloc(1, sizeof(struct frame)); + if ( n == NULL ) return NULL; + + n->rendering_order = NULL; + n->max_ro = 32; + alloc_ro(n); + + n->num_ro = 1; + n->rendering_order[0] = n; + + n->pl = NULL; + + return n; +} + + +struct frame *add_subframe(struct frame *fr) +{ + struct frame *n; + + n = frame_new(); + if ( n == NULL ) return NULL; + + if ( fr->num_ro == fr->max_ro ) { + fr->max_ro += 32; + if ( alloc_ro(fr) ) return NULL; + } + + fr->rendering_order[fr->num_ro++] = n; + + return n; +} + |