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-rw-r--r--src/listbox.c138
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diff --git a/src/listbox.c b/src/listbox.c
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+/*
+ * Calcurse - text-based organizer
+ *
+ * Copyright (c) 2004-2014 calcurse Development Team <misc@calcurse.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer in the documentation and/or other
+ * materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Send your feedback or comments to : misc@calcurse.org
+ * Calcurse home page : http://calcurse.org
+ *
+ */
+
+#include "calcurse.h"
+
+void listbox_init(struct listbox *lb, int y, int x, int h, int w,
+ const char *label, listbox_fn_item_height_t fn_height,
+ listbox_fn_draw_item_t fn_draw)
+{
+ EXIT_IF(lb == NULL, "null pointer");
+ wins_scrollwin_init(&(lb->sw), y, x, h, w, label);
+ lb->item_count = lb->item_sel = 0;
+ lb->fn_height = fn_height;
+ lb->ch = NULL;
+ lb->fn_draw = fn_draw;
+ lb->cb_data = NULL;
+}
+
+void listbox_delete(struct listbox *lb)
+{
+ EXIT_IF(lb == NULL, "null pointer");
+ wins_scrollwin_delete(&(lb->sw));
+ free(lb->ch);
+}
+
+void listbox_resize(struct listbox *lb, int y, int x, int h, int w)
+{
+ EXIT_IF(lb == NULL, "null pointer");
+ wins_scrollwin_resize(&(lb->sw), y, x, h, w);
+ wins_scrollwin_ensure_visible(&(lb->sw), lb->ch[lb->item_sel]);
+ wins_scrollwin_ensure_visible(&(lb->sw), lb->ch[lb->item_sel + 1] - 1);
+}
+
+void listbox_set_cb_data(struct listbox *lb, void *cb_data)
+{
+ lb->cb_data = cb_data;
+}
+
+void listbox_load_items(struct listbox *lb, int item_count)
+{
+ int i, ch;
+
+ lb->item_count = item_count;
+
+ if (lb->item_sel >= item_count)
+ lb->item_sel = item_count - 1;
+
+ free(lb->ch);
+ lb->ch = xmalloc((item_count + 1) * sizeof(unsigned));
+ for (i = 0, ch = 0; i < item_count; i++) {
+ lb->ch[i] = ch;
+ ch += lb->fn_height(i, lb->cb_data);
+ }
+ lb->ch[item_count] = ch;
+
+ wins_scrollwin_set_linecount(&(lb->sw), ch);
+}
+
+void listbox_draw_deco(struct listbox *lb)
+{
+ wins_scrollwin_draw_deco(&(lb->sw));
+}
+
+void listbox_display(struct listbox *lb)
+{
+ int i;
+
+ werase(lb->sw.inner);
+
+ for (i = 0; i < lb->item_count; i++) {
+ int is_sel = (i == lb->item_sel);
+ lb->fn_draw(i, lb->sw.inner, lb->ch[i], is_sel, lb->cb_data);
+ }
+
+ wins_scrollwin_display(&(lb->sw));
+}
+
+int listbox_get_sel(struct listbox *lb)
+{
+ return lb->item_sel;
+}
+
+void listbox_set_sel(struct listbox *lb, unsigned pos)
+{
+ lb->item_sel = pos;
+
+ wins_scrollwin_ensure_visible(&(lb->sw), lb->ch[lb->item_sel]);
+ wins_scrollwin_ensure_visible(&(lb->sw), lb->ch[lb->item_sel + 1] - 1);
+}
+
+void listbox_sel_move(struct listbox *lb, int delta)
+{
+ if (lb->item_count == 0)
+ return;
+
+ if (delta < 0 && lb->item_sel < -delta)
+ lb->item_sel = 0;
+ else if (delta > 0 && lb->item_sel + delta >= lb->item_count)
+ lb->item_sel = lb->item_count - 1;
+ else
+ lb->item_sel += delta;
+
+ wins_scrollwin_ensure_visible(&(lb->sw), lb->ch[lb->item_sel]);
+ wins_scrollwin_ensure_visible(&(lb->sw), lb->ch[lb->item_sel + 1] - 1);
+}