1 files changed, 116 insertions, 0 deletions
diff --git a/thumbs.c b/thumbs.c
new file mode 100644
index 0000000..9a8791f
--- /dev/null
+++ b/thumbs.c
@@ -0,0 +1,116 @@
+/* sxiv: thumbs.c
+ * Copyright (c) 2011 Bert Muennich <muennich at informatik.hu-berlin.de>
+ *
+ * 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 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <Imlib2.h>
+
+#include "config.h"
+#include "thumbs.h"
+#include "util.h"
+
+const int thumb_dim = THUMB_SIZE + 10;
+
+void tns_init(tns_t *tns, int cnt) {
+	if (!tns)
+		return;
+
+	tns->cnt = tns->first = tns->sel = 0;
+	tns->thumbs = (thumb_t*) s_malloc(cnt * sizeof(thumb_t));
+}
+
+void tns_free(tns_t *tns, win_t *win) {
+	int i;
+
+	if (!tns)
+		return;
+
+	for (i = 0; i < tns->cnt; ++i)
+		win_free_pixmap(win, tns->thumbs[i].pm);
+
+	free(tns->thumbs);
+	tns->thumbs = NULL;
+}
+
+void tns_load(tns_t *tns, win_t *win, const char *filename) {
+	int w, h;
+	float z, zw, zh;
+	thumb_t *t;
+	Imlib_Image *im;
+
+	if (!tns || !win || !filename)
+		return;
+
+	if (!(im = imlib_load_image(filename)))
+		return;
+
+	imlib_context_set_image(im);
+
+	w = imlib_image_get_width();
+	h = imlib_image_get_height();
+	zw = (float) THUMB_SIZE / (float) w;
+	zh = (float) THUMB_SIZE / (float) h;
+	z = MIN(zw, zh);
+
+	t = &tns->thumbs[tns->cnt++];
+	t->w = z * w;
+	t->h = z * h;
+
+	t->pm = win_create_pixmap(win, t->w, t->h);
+	imlib_context_set_drawable(t->pm);
+	imlib_render_image_part_on_drawable_at_size(0, 0, w, h,
+	                                            0, 0, t->w, t->h);
+	imlib_free_image();
+}
+
+void tns_render(tns_t *tns, win_t *win) {
+	int i, cnt, x, y;
+
+	if (!tns || !win)
+		return;
+
+	tns->cols = win->w / thumb_dim;
+	tns->rows = win->h / thumb_dim;
+
+	cnt = tns->cols * tns->rows;
+	if (tns->first && tns->first + cnt > tns->cnt)
+		tns->first = MAX(0, tns->cnt - cnt);
+	cnt = MIN(tns->first + cnt, tns->cnt);
+
+	win_clear(win);
+
+	x = y = 5;
+	i = tns->first;
+
+	while (i < cnt) {
+		tns->thumbs[i].x = x + (THUMB_SIZE - tns->thumbs[i].w) / 2;
+		tns->thumbs[i].y = y + (THUMB_SIZE - tns->thumbs[i].h) / 2;
+		win_draw_pixmap(win, tns->thumbs[i].pm, tns->thumbs[i].x,
+		                tns->thumbs[i].y, tns->thumbs[i].w, tns->thumbs[i].h);
+		if (++i % tns->cols == 0) {
+			x = 5;
+			y += thumb_dim;
+		} else {
+			x += thumb_dim;
+		}
+	}
+
+	win_draw(win);
+}
+