aboutsummaryrefslogtreecommitdiff
path: root/src/imagestore.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/imagestore.c')
-rw-r--r--src/imagestore.c369
1 files changed, 0 insertions, 369 deletions
diff --git a/src/imagestore.c b/src/imagestore.c
deleted file mode 100644
index 61ebcfb..0000000
--- a/src/imagestore.c
+++ /dev/null
@@ -1,369 +0,0 @@
-/*
- * imagestore.c
- *
- * Copyright © 2013-2018 Thomas White <taw@bitwiz.org.uk>
- *
- * This file is part of Colloquium.
- *
- * Colloquium 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 <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <libgen.h>
-#include <cairo.h>
-#include <glib.h>
-#include <gio/gio.h>
-#include <gdk/gdk.h>
-#include <gdk-pixbuf/gdk-pixbuf.h>
-
-#include "imagestore.h"
-#include "utils.h"
-
-#define MAX_SIZES (32)
-
-struct image_record
-{
- char *filename;
- cairo_surface_t *surf[MAX_SIZES];
- int w[MAX_SIZES];
- int last_used[MAX_SIZES];
- int n_sizes;
- int h_last_used;
- int full_width;
- int full_height;
-};
-
-
-struct _imagestore
-{
- int n_images;
- struct image_record *images;
- int max_images;
- GFile *pparent;
- GFile *iparent;
- const char *storename;
-};
-
-
-static int alloc_images(ImageStore *is, int new_max_images)
-{
- struct image_record *images_new;
-
- images_new = realloc(is->images,
- sizeof(struct image_record)*new_max_images);
- if ( images_new == NULL ) return 1;
-
- is->images = images_new;
- is->max_images = new_max_images;
- return 0;
-}
-
-
-ImageStore *imagestore_new(const char *storename)
-{
- ImageStore *is;
-
- is = calloc(1, sizeof(ImageStore));
- if ( is == NULL ) return NULL;
-
- is->images = NULL;
- is->pparent = NULL;
- if ( storename != NULL ) {
- is->iparent = g_file_new_for_uri(storename);
- } else {
- is->iparent = NULL;
- }
- is->n_images = 0;
- is->max_images = 0;
- if ( alloc_images(is, 32) ) {
- free(is);
- return NULL;
- }
-
- return is;
-}
-
-
-void imagestore_set_parent(ImageStore *is, GFile *parent)
-{
- if ( is->pparent != NULL ) {
- g_object_unref(is->pparent);
- }
- is->pparent = parent;
-}
-
-
-void imagestore_destroy(ImageStore *is)
-{
- int i;
-
- for ( i=0; i<is->n_images; i++ ) {
- int j;
- free(is->images[i].filename);
- for ( j=0; j<is->images[i].n_sizes; j++ ) {
- if ( is->images[i].surf[j] != NULL ) {
- g_object_unref(is->images[i].surf[j]);
- }
- }
- }
- g_object_unref(is->pparent);
- g_object_unref(is->iparent);
- free(is->images);
- free(is);
-}
-
-
-static cairo_surface_t *pixbuf_to_surface(GdkPixbuf *t)
-{
- cairo_surface_t *surf;
- cairo_t *cr;
- int w, h;
-
- if ( t == NULL ) return NULL;
-
- w = gdk_pixbuf_get_width(t);
- h = gdk_pixbuf_get_height(t);
-
- surf = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w, h);
- if ( surf == NULL ) return NULL;
-
- cr = cairo_create(surf);
-
- gdk_cairo_set_source_pixbuf(cr, t, 0, 0);
- cairo_pattern_t *patt = cairo_get_source(cr);
- cairo_pattern_set_extend(patt, CAIRO_EXTEND_PAD);
- cairo_pattern_set_filter(patt, CAIRO_FILTER_BEST);
- cairo_paint(cr);
-
- cairo_destroy(cr);
-
- return surf;
-}
-
-
-static int try_load(GFile *file, GdkPixbuf **pixbuf, gint w, gint h)
-{
- GFileInputStream *stream;
- GError *error = NULL;
-
- stream = g_file_read(file, NULL, &error);
- if ( stream != NULL ) {
- GError *pberr = NULL;
- *pixbuf = gdk_pixbuf_new_from_stream_at_scale(G_INPUT_STREAM(stream),
- w, h, TRUE,
- NULL, &pberr);
- g_object_unref(stream);
- g_object_unref(file);
- return 1;
- }
-
- return 0;
-}
-
-
-static GdkPixbuf *load_image(const char *uri, GFile *pparent, GFile *iparent,
- gint w, gint h)
-{
- GFile *file;
- GdkPixbuf *pixbuf;
-
- /* Literal pathname */
- file = g_file_new_for_path(uri);
- if ( try_load(file, &pixbuf, w, h) ) return pixbuf;
-
- /* Try the file prefixed with the directory the presentation is in */
- if ( pparent != NULL ) {
- file = g_file_get_child(pparent, uri);
- if ( try_load(file, &pixbuf, w, h) ) return pixbuf;
- }
-
- /* Try prefixing with imagestore folder */
- if ( iparent != NULL ) {
- file = g_file_get_child(iparent, uri);
- if ( try_load(file, &pixbuf, w, h) ) return pixbuf;
- }
-
- return NULL;
-}
-
-
-static struct image_record *add_image_record(ImageStore *is,
- const char *filename)
-{
- int idx;
-
- if ( is->n_images == is->max_images ) {
- if ( alloc_images(is, is->max_images+32) ) {
- fprintf(stderr, "Couldn't allocate memory for image "
- "records.\n");
- return NULL;
- }
- }
-
- idx = is->n_images++;
-
- is->images[idx].n_sizes = 0;
- is->images[idx].filename = strdup(filename);
- is->images[idx].h_last_used = 0;
-
- return &is->images[idx];
-}
-
-
-
-int imagestore_get_size(ImageStore *is, const char *filename,
- int *w, int *h)
-{
- GdkPixbuf *pixbuf;
- struct image_record *ir;
- int i;
-
- for ( i=0; i<is->n_images; i++ ) {
- if ( strcmp(is->images[i].filename, filename) == 0 ) {
- *w = is->images[i].full_width;
- *h = is->images[i].full_height;
- return 0;
- }
- }
-
- pixbuf = load_image(filename, is->pparent, is->iparent, -1, -1);
- if ( pixbuf == NULL ) return 1;
-
-
- *w = gdk_pixbuf_get_width(pixbuf);
- *h = gdk_pixbuf_get_height(pixbuf);
-
- ir = add_image_record(is, filename);
- if ( ir != NULL ) {
- ir->full_width = *w;
- ir->full_height = *h;
- } /* otherwise can't cache, too bad */
-
- g_object_unref(pixbuf);
-
- return 0;
-}
-
-
-static int find_earliest(struct image_record *im)
-{
- int i, earliest, l;
-
- earliest = im->h_last_used;
- l = im->n_sizes;
-
- for ( i=0; i<im->n_sizes; i++ ) {
- if ( im->last_used[i] < earliest ) {
- earliest = im->last_used[i];
- l = i;
- }
- }
-
- assert(l != im->n_sizes);
-
- cairo_surface_destroy(im->surf[l]);
-
- return l;
-}
-
-
-static cairo_surface_t *add_image_size(struct image_record *im,
- const char *filename,
- GFile *pparent, GFile *iparent,
- int w)
-{
- cairo_surface_t *surf;
- GdkPixbuf *t;
- int pos;
-
- t = load_image(filename, pparent, iparent, w, -1);
- if ( t == NULL ) return NULL;
- surf = pixbuf_to_surface(t);
- g_object_unref(t);
-
- /* Add surface to list */
- if ( im->n_sizes == MAX_SIZES ) {
- pos = find_earliest(im);
- } else {
- pos = im->n_sizes++;
- }
-
- im->w[pos] = w;
- im->surf[pos] = surf;
- im->last_used[pos] = im->h_last_used++;
-
- return surf;
-}
-
-
-static cairo_surface_t *add_new_image(ImageStore *is, const char *filename, int w)
-{
- struct image_record *ir;
- ir = add_image_record(is, filename);
- if ( ir == NULL ) return NULL;
- return add_image_size(ir, filename, is->pparent, is->iparent, w);
-}
-
-
-void show_imagestore(ImageStore *is)
-{
- int i;
-
- printf("Store %p contains %i records.\n", is, is->n_images);
-
- for ( i=0; i<is->n_images; i++ ) {
-
- printf("%s :\n", is->images[i].filename);
- printf("\n");
-
- }
-}
-
-
-cairo_surface_t *lookup_image(ImageStore *is, const char *filename, int w)
-{
- int i, j;
- int found = 0;
- cairo_surface_t *surf;
-
- for ( i=0; i<is->n_images; i++ ) {
- if ( strcmp(is->images[i].filename, filename) == 0 ) {
- found = 1;
- break;
- }
- }
- if ( !found ) {
- return add_new_image(is, filename, w);
- }
-
- for ( j=0; j<is->images[i].n_sizes; j++ ) {
- if ( is->images[i].w[j] == w ) {
- is->images[i].last_used[j] = is->images[i].h_last_used++;
- return is->images[i].surf[j];
- }
- }
-
- /* We don't have this size yet */
- surf = add_image_size(&is->images[i], filename, is->pparent,
- is->iparent, w);
- return surf;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 01:46:17 +0000