diff options
Diffstat (limited to 'thumbs.c')
| -rw-r--r-- | thumbs.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/thumbs.c b/thumbs.c new file mode 100644 index 0000000..25a7fc1 --- /dev/null +++ b/thumbs.c @@ -0,0 +1,188 @@ +/* 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" + +extern Imlib_Image *im_broken; +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))) + imlib_context_set_image(im); + else + imlib_context_set_image(im_broken); + + 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); + if (!im && z > 1.0) + z = 1.0; + + 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 = MAX(1, win->w / thumb_dim); + tns->rows = MAX(1, 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; + } + } + + tns_highlight(tns, win, -1); +} + +void tns_highlight(tns_t *tns, win_t *win, int old) { + thumb_t *t; + + if (!tns || !win) + return; + + if (old >= 0 && old < tns->cnt) { + t = &tns->thumbs[old]; + win_draw_rect(win, t->x - 2, t->y - 2, t->w + 4, t->h + 4, False); + } + if (tns->sel < tns->cnt) { + t = &tns->thumbs[tns->sel]; + win_draw_rect(win, t->x - 2, t->y - 2, t->w + 4, t->h + 4, True); + } + + win_draw(win); +} + +void tns_move_selection(tns_t *tns, win_t *win, movedir_t dir) { + int sel; + + if (!tns || !win) + return; + + sel = tns->sel; + + switch (dir) { + case MOVE_LEFT: + if (sel % tns->cols > 0) { + --tns->sel; + tns_highlight(tns, win, sel); + } + break; + case MOVE_RIGHT: + if (sel % tns->cols < tns->cols - 1 && sel < tns->cnt - 1) { + ++tns->sel; + tns_highlight(tns, win, sel); + } + break; + case MOVE_UP: + if (sel / tns->cols > 0) { + tns->sel -= tns->cols; + tns_highlight(tns, win, sel); + } + break; + case MOVE_DOWN: + if (sel / tns->cols < tns->rows - 1 && sel + tns->cols < tns->cnt) { + tns->sel += tns->cols; + tns_highlight(tns, win, sel); + } + break; + } +} + +int tns_translate(tns_t *tns, int x, int y) { + int n; + thumb_t *t; + + if (!tns || x < 5 || y < 5) + return -1; + + if ((n = y / thumb_dim * tns-> cols + x / thumb_dim) < tns->cnt) { + t = &tns->thumbs[n]; + if (x > t->x && x < t->x + t->w && y > t->y && y < t->y + t->h) + return n; + } + + return -1; +} |