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-rw-r--r--libview/ev-page-cache.c169
1 files changed, 128 insertions, 41 deletions
diff --git a/libview/ev-page-cache.c b/libview/ev-page-cache.c
index d814144..cdec16c 100644
--- a/libview/ev-page-cache.c
+++ b/libview/ev-page-cache.c
@@ -32,17 +32,18 @@
#include "ev-page-cache.h"
typedef struct _EvPageCacheData {
- EvJob *job;
- gboolean done : 1;
-
- EvMappingList *link_mapping;
- EvMappingList *image_mapping;
- EvMappingList *form_field_mapping;
- EvMappingList *annot_mapping;
- cairo_region_t *text_mapping;
- EvRectangle *text_layout;
- guint text_layout_length;
- gchar *text;
+ EvJob *job;
+ gboolean done : 1;
+ EvJobPageDataFlags flags;
+
+ EvMappingList *link_mapping;
+ EvMappingList *image_mapping;
+ EvMappingList *form_field_mapping;
+ EvMappingList *annot_mapping;
+ cairo_region_t *text_mapping;
+ EvRectangle *text_layout;
+ guint text_layout_length;
+ gchar *text;
} EvPageCacheData;
struct _EvPageCache {
@@ -51,6 +52,11 @@ struct _EvPageCache {
EvDocument *document;
EvPageCacheData *page_list;
gint n_pages;
+
+ /* Current range */
+ gint start_page;
+ gint end_page;
+
EvJobPageDataFlags flags;
};
@@ -58,8 +64,18 @@ struct _EvPageCacheClass {
GObjectClass parent_class;
};
+#define EV_PAGE_DATA_FLAGS_DEFAULT ( \
+ EV_PAGE_DATA_INCLUDE_LINKS | \
+ EV_PAGE_DATA_INCLUDE_TEXT_MAPPING | \
+ EV_PAGE_DATA_INCLUDE_IMAGES | \
+ EV_PAGE_DATA_INCLUDE_FORMS | \
+ EV_PAGE_DATA_INCLUDE_ANNOTS)
+
+
static void job_page_data_finished_cb (EvJob *job,
EvPageCache *cache);
+static void job_page_data_cancelled_cb (EvJob *job,
+ EvPageCacheData *data);
G_DEFINE_TYPE (EvPageCache, ev_page_cache, G_TYPE_OBJECT)
@@ -120,10 +136,14 @@ ev_page_cache_finalize (GObject *object)
data = &cache->page_list[i];
- if (data->job)
+ if (data->job) {
g_signal_handlers_disconnect_by_func (data->job,
G_CALLBACK (job_page_data_finished_cb),
cache);
+ g_signal_handlers_disconnect_by_func (data->job,
+ G_CALLBACK (job_page_data_cancelled_cb),
+ data);
+ }
ev_page_cache_data_free (data);
}
@@ -154,22 +174,56 @@ ev_page_cache_class_init (EvPageCacheClass *klass)
}
static EvJobPageDataFlags
-get_flags_for_document (EvDocument *document)
+ev_page_cache_get_flags_for_data (EvPageCache *cache,
+ EvPageCacheData *data)
{
EvJobPageDataFlags flags = EV_PAGE_DATA_INCLUDE_NONE;
- if (EV_IS_DOCUMENT_LINKS (document))
- flags |= EV_PAGE_DATA_INCLUDE_LINKS;
- if (EV_IS_DOCUMENT_IMAGES (document))
- flags |= EV_PAGE_DATA_INCLUDE_IMAGES;
- if (EV_IS_DOCUMENT_FORMS (document))
- flags |= EV_PAGE_DATA_INCLUDE_FORMS;
- if (EV_IS_DOCUMENT_ANNOTATIONS (document))
- flags |= EV_PAGE_DATA_INCLUDE_ANNOTS;
- if (EV_IS_SELECTION (document) && EV_IS_DOCUMENT_TEXT (document))
- flags |= EV_PAGE_DATA_INCLUDE_TEXT_MAPPING;
- if (EV_IS_DOCUMENT_TEXT (document))
- flags |= EV_PAGE_DATA_INCLUDE_TEXT | EV_PAGE_DATA_INCLUDE_TEXT_LAYOUT;
+ if (data->flags == cache->flags)
+ return cache->flags;
+
+ /* Flags changed */
+ if (cache->flags & EV_PAGE_DATA_INCLUDE_LINKS) {
+ flags = (data->link_mapping) ?
+ flags & ~EV_PAGE_DATA_INCLUDE_LINKS :
+ flags | EV_PAGE_DATA_INCLUDE_LINKS;
+ }
+
+ if (cache->flags & EV_PAGE_DATA_INCLUDE_IMAGES) {
+ flags = (data->image_mapping) ?
+ flags & ~EV_PAGE_DATA_INCLUDE_IMAGES :
+ flags | EV_PAGE_DATA_INCLUDE_IMAGES;
+ }
+
+ if (cache->flags & EV_PAGE_DATA_INCLUDE_FORMS) {
+ flags = (data->form_field_mapping) ?
+ flags & ~EV_PAGE_DATA_INCLUDE_FORMS :
+ flags | EV_PAGE_DATA_INCLUDE_FORMS;
+ }
+
+ if (cache->flags & EV_PAGE_DATA_INCLUDE_ANNOTS) {
+ flags = (data->annot_mapping) ?
+ flags & ~EV_PAGE_DATA_INCLUDE_ANNOTS :
+ flags | EV_PAGE_DATA_INCLUDE_ANNOTS;
+ }
+
+ if (cache->flags & EV_PAGE_DATA_INCLUDE_TEXT_MAPPING) {
+ flags = (data->text_mapping) ?
+ flags & ~EV_PAGE_DATA_INCLUDE_TEXT_MAPPING :
+ flags | EV_PAGE_DATA_INCLUDE_TEXT_MAPPING;
+ }
+
+ if (cache->flags & EV_PAGE_DATA_INCLUDE_TEXT) {
+ flags = (data->text) ?
+ flags & ~EV_PAGE_DATA_INCLUDE_TEXT :
+ flags | EV_PAGE_DATA_INCLUDE_TEXT;
+ }
+
+ if (cache->flags & EV_PAGE_DATA_INCLUDE_TEXT_LAYOUT) {
+ flags = (data->text_layout_length > 0) ?
+ flags & ~EV_PAGE_DATA_INCLUDE_TEXT_LAYOUT :
+ flags | EV_PAGE_DATA_INCLUDE_TEXT_LAYOUT;
+ }
return flags;
}
@@ -184,11 +238,8 @@ ev_page_cache_new (EvDocument *document)
cache = EV_PAGE_CACHE (g_object_new (EV_TYPE_PAGE_CACHE, NULL));
cache->document = g_object_ref (document);
cache->n_pages = ev_document_get_n_pages (document);
- cache->flags = get_flags_for_document (document);
-
- if (cache->flags != EV_PAGE_DATA_INCLUDE_NONE) {
- cache->page_list = g_new0 (EvPageCacheData, cache->n_pages);
- }
+ cache->flags = EV_PAGE_DATA_FLAGS_DEFAULT;
+ cache->page_list = g_new0 (EvPageCacheData, cache->n_pages);
return cache;
}
@@ -201,20 +252,37 @@ job_page_data_finished_cb (EvJob *job,
EvPageCacheData *data;
data = &cache->page_list[job_data->page];
- data->link_mapping = job_data->link_mapping;
- data->image_mapping = job_data->image_mapping;
- data->form_field_mapping = job_data->form_field_mapping;
- data->annot_mapping = job_data->annot_mapping;
- data->text_mapping = job_data->text_mapping;
- data->text_layout = job_data->text_layout;
- data->text_layout_length = job_data->text_layout_length;
- data->text = job_data->text;
+
+ if (job_data->flags & EV_PAGE_DATA_INCLUDE_LINKS)
+ data->link_mapping = job_data->link_mapping;
+ if (job_data->flags & EV_PAGE_DATA_INCLUDE_IMAGES)
+ data->image_mapping = job_data->image_mapping;
+ if (job_data->flags & EV_PAGE_DATA_INCLUDE_FORMS)
+ data->form_field_mapping = job_data->form_field_mapping;
+ if (job_data->flags & EV_PAGE_DATA_INCLUDE_ANNOTS)
+ data->annot_mapping = job_data->annot_mapping;
+ if (job_data->flags & EV_PAGE_DATA_INCLUDE_TEXT_MAPPING)
+ data->text_mapping = job_data->text_mapping;
+ if (job_data->flags & EV_PAGE_DATA_INCLUDE_TEXT_LAYOUT) {
+ data->text_layout = job_data->text_layout;
+ data->text_layout_length = job_data->text_layout_length;
+ }
+ if (job_data->flags & EV_PAGE_DATA_INCLUDE_TEXT)
+ data->text = job_data->text;
data->done = TRUE;
g_object_unref (data->job);
data->job = NULL;
}
+static void
+job_page_data_cancelled_cb (EvJob *job,
+ EvPageCacheData *data)
+{
+ g_object_unref (data->job);
+ data->job = NULL;
+}
+
void
ev_page_cache_set_page_range (EvPageCache *cache,
gint start,
@@ -225,16 +293,29 @@ ev_page_cache_set_page_range (EvPageCache *cache,
if (cache->flags == EV_PAGE_DATA_INCLUDE_NONE)
return;
+ cache->start_page = start;
+ cache->end_page = end;
+
for (i = start; i <= end; i++) {
- EvPageCacheData *data = &cache->page_list[i];
+ EvPageCacheData *data = &cache->page_list[i];
+ EvJobPageDataFlags flags;
- if (data->done || data->job)
+ if (data->flags == cache->flags && (data->done || data->job))
continue;
- data->job = ev_job_page_data_new (cache->document, i, cache->flags);
+ if (data->job)
+ ev_job_cancel (data->job);
+
+ flags = ev_page_cache_get_flags_for_data (cache, data);
+
+ data->flags = cache->flags;
+ data->job = ev_job_page_data_new (cache->document, i, flags);
g_signal_connect (data->job, "finished",
G_CALLBACK (job_page_data_finished_cb),
cache);
+ g_signal_connect (data->job, "cancelled",
+ G_CALLBACK (job_page_data_cancelled_cb),
+ data);
ev_job_scheduler_push_job (data->job, EV_JOB_PRIORITY_NONE);
}
}
@@ -249,7 +330,13 @@ void
ev_page_cache_set_flags (EvPageCache *cache,
EvJobPageDataFlags flags)
{
+ if (cache->flags == flags)
+ return;
+
cache->flags = flags;
+
+ /* Update the current range for new flags */
+ ev_page_cache_set_page_range (cache, cache->start_page, cache->end_page);
}
EvMappingList *
generated by cgit v0.9.1 at 2024-04-16 04:28:56 (GMT)