151 lines
3.4 KiB
C
151 lines
3.4 KiB
C
/* sxiv: thumbs.c
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* Copyright (c) 2011 Bert Muennich <muennich at informatik.hu-berlin.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <pthread.h>
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#include <Imlib2.h>
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#include "config.h"
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#include "thumbs.h"
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#include "util.h"
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typedef struct tload_s {
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const char **filenames;
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tns_t *tns;
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win_t *win;
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} tload_t;
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const int thumb_dim = THUMB_SIZE + 10;
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pthread_t loader;
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tload_t tinfo;
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void* thread_load(void *arg) {
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int i, w, h;
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float z, zw, zh;
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tload_t *tl;
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thumb_t *t;
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Imlib_Image *im;
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tl = (tload_t*) arg;
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for (i = 0; i < tl->tns->cnt; ++i) {
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if (!(im = imlib_load_image(tl->filenames[i])))
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continue;
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imlib_context_set_image(im);
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w = imlib_image_get_width();
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h = imlib_image_get_height();
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zw = (float) THUMB_SIZE / (float) w;
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zh = (float) THUMB_SIZE / (float) h;
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z = MIN(zw, zh);
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t = &tl->tns->thumbs[i];
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t->w = z * w;
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t->h = z * h;
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t->pm = win_create_pixmap(tl->win, t->w, t->h);
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imlib_context_set_drawable(t->pm);
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imlib_render_image_part_on_drawable_at_size(0, 0, w, h,
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0, 0, t->w, t->h);
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t->loaded = 1;
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imlib_free_image();
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}
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tl->tns->loaded = 1;
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return 0;
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}
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void tns_load(tns_t *tns, win_t *win, const char **fnames, int fcnt) {
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pthread_attr_t tattr;
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if (!tns || !win || !fnames || !fcnt)
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return;
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tns->thumbs = (thumb_t*) s_malloc(fcnt * sizeof(thumb_t));
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memset(tns->thumbs, 0, fcnt * sizeof(thumb_t));
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tns->cnt = fcnt;
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tns->loaded = 0;
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tinfo.filenames = fnames;
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tinfo.tns = tns;
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tinfo.win = win;
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pthread_attr_init(&tattr);
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pthread_attr_setdetachstate(&tattr, PTHREAD_CREATE_JOINABLE);
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if (pthread_create(&loader, &tattr, thread_load, (void*) &tinfo))
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die("could not create thread");
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}
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void tns_free(tns_t *tns, win_t *win) {
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int i;
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if (!tns)
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return;
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for (i = 0; i < tns->cnt; ++i)
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win_free_pixmap(win, tns->thumbs[i].pm);
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free(tns->thumbs);
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tns->thumbs = NULL;
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}
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void tns_render(tns_t *tns, win_t *win) {
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int i, cnt, x, y;
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if (!tns || !win)
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return;
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tns->cols = win->w / thumb_dim;
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tns->rows = win->h / thumb_dim;
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cnt = tns->cols * tns->rows;
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if (tns->first && tns->first + cnt > tns->cnt)
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tns->first = MAX(0, tns->cnt - cnt);
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cnt = MIN(tns->first + cnt, tns->cnt);
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win_clear(win);
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x = y = 5;
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i = tns->first;
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while (i < cnt) {
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if (!tns->thumbs[i].loaded)
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continue;
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tns->thumbs[i].x = x + (THUMB_SIZE - tns->thumbs[i].w) / 2;
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tns->thumbs[i].y = y + (THUMB_SIZE - tns->thumbs[i].h) / 2;
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win_draw_pixmap(win, tns->thumbs[i].pm, tns->thumbs[i].x,
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tns->thumbs[i].y, tns->thumbs[i].w, tns->thumbs[i].h);
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if (++i % tns->cols == 0) {
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x = 5;
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y += thumb_dim;
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} else {
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x += thumb_dim;
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}
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}
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win_draw(win);
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}
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