/* We keep a link to our containing view just for style information. */
GtkWidget *view;
EvDocument *document;
+ EvDocumentModel *model;
int start_page;
int end_page;
gboolean inverted_colors;
+ gsize max_size;
+
/* preload_cache_size is the number of pages prior to the current
* visible area that we cache. It's normally 1, but could be 2 in the
* case of twin pages.
#define PAGE_CACHE_LEN(pixbuf_cache) \
((pixbuf_cache->end_page - pixbuf_cache->start_page) + 1)
+#define MAX_PRELOADED_PAGES 3
+
G_DEFINE_TYPE (EvPixbufCache, ev_pixbuf_cache, G_TYPE_OBJECT)
static void
ev_pixbuf_cache_init (EvPixbufCache *pixbuf_cache)
{
- pixbuf_cache->start_page = 0;
- pixbuf_cache->end_page = 0;
- pixbuf_cache->job_list = g_new0 (CacheJobInfo, PAGE_CACHE_LEN (pixbuf_cache));
-
- pixbuf_cache->preload_cache_size = 2;
- pixbuf_cache->prev_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
- pixbuf_cache->next_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
+ pixbuf_cache->start_page = -1;
+ pixbuf_cache->end_page = -1;
}
static void
g_free (pixbuf_cache->job_list);
g_free (pixbuf_cache->next_job);
+ g_object_unref (pixbuf_cache->model);
+
G_OBJECT_CLASS (ev_pixbuf_cache_parent_class)->finalize (object);
}
EvPixbufCache *
-ev_pixbuf_cache_new (GtkWidget *view,
- EvDocument *document)
+ev_pixbuf_cache_new (GtkWidget *view,
+ EvDocumentModel *model,
+ gsize max_size)
{
EvPixbufCache *pixbuf_cache;
pixbuf_cache = (EvPixbufCache *) g_object_new (EV_TYPE_PIXBUF_CACHE, NULL);
/* This is a backlink, so we don't ref this */
pixbuf_cache->view = view;
- pixbuf_cache->document = document;
+ pixbuf_cache->model = g_object_ref (model);
+ pixbuf_cache->document = ev_document_model_get_document (model);
+ pixbuf_cache->max_size = max_size;
return pixbuf_cache;
}
+void
+ev_pixbuf_cache_set_max_size (EvPixbufCache *pixbuf_cache,
+ gsize max_size)
+{
+ if (pixbuf_cache->max_size == max_size)
+ return;
+
+ if (pixbuf_cache->max_size > max_size)
+ ev_pixbuf_cache_clear (pixbuf_cache);
+ pixbuf_cache->max_size = max_size;
+}
+
static void
copy_job_to_job_info (EvJobRender *job_render,
CacheJobInfo *job_info,
CacheJobInfo *new_job_list,
CacheJobInfo *new_prev_job,
CacheJobInfo *new_next_job,
+ int new_preload_cache_size,
int start_page,
int end_page,
gint priority)
int page_offset;
gint new_priority;
- if (page < (start_page - pixbuf_cache->preload_cache_size) ||
- page > (end_page + pixbuf_cache->preload_cache_size)) {
+ if (page < (start_page - new_preload_cache_size) ||
+ page > (end_page + new_preload_cache_size)) {
dispose_cache_job_info (job_info, pixbuf_cache);
return;
}
/* find the target page to copy it over to. */
if (page < start_page) {
- page_offset = (page - (start_page - pixbuf_cache->preload_cache_size));
+ page_offset = (page - (start_page - new_preload_cache_size));
g_assert (page_offset >= 0 &&
- page_offset < pixbuf_cache->preload_cache_size);
+ page_offset < new_preload_cache_size);
target_page = new_prev_job + page_offset;
new_priority = EV_JOB_PRIORITY_LOW;
} else if (page > end_page) {
page_offset = (page - (end_page + 1));
g_assert (page_offset >= 0 &&
- page_offset < pixbuf_cache->preload_cache_size);
+ page_offset < new_preload_cache_size);
target_page = new_next_job + page_offset;
new_priority = EV_JOB_PRIORITY_LOW;
} else {
}
}
+static gsize
+ev_pixbuf_cache_get_page_size (EvPixbufCache *pixbuf_cache,
+ gint page_index,
+ gdouble scale,
+ gint rotation)
+{
+ gint width, height;
+
+ _get_page_size_for_scale_and_rotation (pixbuf_cache->document,
+ page_index, scale, rotation,
+ &width, &height);
+ return height * cairo_format_stride_for_width (CAIRO_FORMAT_RGB24, width);
+}
+
+static gint
+ev_pixbuf_cache_get_preload_size (EvPixbufCache *pixbuf_cache,
+ gint start_page,
+ gint end_page,
+ gdouble scale,
+ gint rotation)
+{
+ gsize range_size = 0;
+ gint new_preload_cache_size = 0;
+ gint i;
+ guint n_pages = ev_document_get_n_pages (pixbuf_cache->document);
+
+ /* Get the size of the current range */
+ for (i = start_page; i <= end_page; i++) {
+ range_size += ev_pixbuf_cache_get_page_size (pixbuf_cache, i, scale, rotation);
+ }
+
+ if (range_size >= pixbuf_cache->max_size)
+ return new_preload_cache_size;
+
+ i = 1;
+ while (((start_page - i > 0) || (end_page + i < n_pages)) &&
+ new_preload_cache_size < MAX_PRELOADED_PAGES) {
+ gsize page_size;
+ gboolean updated = FALSE;
+
+ if (end_page + i < n_pages) {
+ page_size = ev_pixbuf_cache_get_page_size (pixbuf_cache, end_page + i,
+ scale, rotation);
+ if (page_size + range_size <= pixbuf_cache->max_size) {
+ range_size += page_size;
+ new_preload_cache_size++;
+ updated = TRUE;
+ } else {
+ break;
+ }
+ }
+
+ if (start_page - i > 0) {
+ page_size = ev_pixbuf_cache_get_page_size (pixbuf_cache, start_page - i,
+ scale, rotation);
+ if (page_size + range_size <= pixbuf_cache->max_size) {
+ range_size += page_size;
+ if (!updated)
+ new_preload_cache_size++;
+ } else {
+ break;
+ }
+ }
+ i++;
+ }
+
+ return new_preload_cache_size;
+}
+
static void
ev_pixbuf_cache_update_range (EvPixbufCache *pixbuf_cache,
gint start_page,
gint end_page)
{
CacheJobInfo *new_job_list;
- CacheJobInfo *new_prev_job;
- CacheJobInfo *new_next_job;
- int i, page;
-
+ CacheJobInfo *new_prev_job = NULL;
+ CacheJobInfo *new_next_job = NULL;
+ gint new_preload_cache_size;
+ int i, page;
+ gdouble scale = ev_document_model_get_scale (pixbuf_cache->model);
+ gint rotation = ev_document_model_get_rotation (pixbuf_cache->model);
+
+ new_preload_cache_size = ev_pixbuf_cache_get_preload_size (pixbuf_cache,
+ start_page,
+ end_page,
+ scale,
+ rotation);
if (pixbuf_cache->start_page == start_page &&
- pixbuf_cache->end_page == end_page)
+ pixbuf_cache->end_page == end_page &&
+ pixbuf_cache->preload_cache_size == new_preload_cache_size)
return;
new_job_list = g_new0 (CacheJobInfo, (end_page - start_page) + 1);
- new_prev_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
- new_next_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
+ if (new_preload_cache_size > 0) {
+ new_prev_job = g_new0 (CacheJobInfo, new_preload_cache_size);
+ new_next_job = g_new0 (CacheJobInfo, new_preload_cache_size);
+ }
/* We go through each job in the old cache and either clear it or move
* it to a new location. */
move_one_job (pixbuf_cache->prev_job + i,
pixbuf_cache, page,
new_job_list, new_prev_job, new_next_job,
+ new_preload_cache_size,
start_page, end_page, EV_JOB_PRIORITY_LOW);
}
page ++;
}
page = pixbuf_cache->start_page;
- for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
+ for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache) && page >= 0; i++) {
move_one_job (pixbuf_cache->job_list + i,
pixbuf_cache, page,
new_job_list, new_prev_job, new_next_job,
+ new_preload_cache_size,
start_page, end_page, EV_JOB_PRIORITY_URGENT);
page ++;
}
move_one_job (pixbuf_cache->next_job + i,
pixbuf_cache, page,
new_job_list, new_prev_job, new_next_job,
+ new_preload_cache_size,
start_page, end_page, EV_JOB_PRIORITY_LOW);
}
page ++;
g_free (pixbuf_cache->prev_job);
g_free (pixbuf_cache->next_job);
+ pixbuf_cache->preload_cache_size = new_preload_cache_size;
+
pixbuf_cache->job_list = new_job_list;
pixbuf_cache->prev_job = new_prev_job;
pixbuf_cache->next_job = new_next_job;
cairo_image_surface_get_height (job_info->surface) == height)
return;
+ /* Free old surfaces for non visible pages */
+ if (priority == EV_JOB_PRIORITY_LOW) {
+ if (job_info->surface) {
+ cairo_surface_destroy (job_info->surface);
+ job_info->surface = NULL;
+ }
+
+ if (job_info->selection) {
+ cairo_surface_destroy (job_info->selection);
+ job_info->selection = NULL;
+ }
+ }
+
add_job (pixbuf_cache, job_info, NULL,
width, height, page, rotation, scale,
priority);
https://www.fi.muni.cz/~kas/git / evince.git / blobdiff