#include <stdlib.h>
#include <string.h>
-#define THUMBNAIL_WIDTH 100
-
-typedef struct _EvPageCacheInfo
-{
- double width;
- double height;
-} EvPageCacheInfo;
-
-typedef struct _EvPageThumbsInfo
-{
- gint width;
- gint height;
-} EvPageThumbsInfo;
-
struct _EvPageCache
{
GObject parent;
+ EvDocument *document;
+
gint current_page;
- int n_pages;
- char *title;
- char **page_labels;
-
- gint max_label_chars;
- gboolean has_labels;
- gboolean uniform;
- gboolean dual_even_left;
-
- double uniform_width;
- double uniform_height;
- double max_width;
- double max_height;
+ gboolean dual_even_left;
double* height_to_page;
double* dual_height_to_page;
int rotation;
-
- EvPageCacheInfo *size_cache;
- EvDocumentInfo *page_info;
-
- /* Thumbnail dimensions */
- gboolean thumbs_uniform;
- gint thumbs_uniform_width;
- gint thumbs_uniform_height;
- gint thumbs_max_width;
- gint thumbs_max_height;
- EvPageThumbsInfo *thumbs_size_cache;
};
struct _EvPageCacheClass
ev_page_cache_init (EvPageCache *page_cache)
{
page_cache->current_page = -1;
- page_cache->max_label_chars = 0;
}
static void
static void
ev_page_cache_finalize (GObject *object)
{
- EvPageCache *page_cache;
-
- page_cache = EV_PAGE_CACHE (object);
-
- if (page_cache->title) {
- g_free (page_cache->title);
- page_cache->title = NULL;
- }
+ EvPageCache *page_cache = EV_PAGE_CACHE (object);
- if (page_cache->size_cache) {
- g_free (page_cache->size_cache);
- page_cache->size_cache = NULL;
- }
-
- if (page_cache->thumbs_size_cache) {
- g_free (page_cache->thumbs_size_cache);
- page_cache->thumbs_size_cache = NULL;
- }
+ page_cache->document = NULL;
if (page_cache->height_to_page) {
g_free (page_cache->height_to_page);
page_cache->dual_height_to_page = NULL;
}
- if (page_cache->page_labels) {
- gint i;
-
- for (i = 0; i < page_cache->n_pages; i++) {
- if (page_cache->page_labels[i])
- g_free (page_cache->page_labels[i]);
- }
- g_free (page_cache->page_labels);
- page_cache->page_labels = NULL;
- }
-
- if (page_cache->page_info) {
- ev_document_info_free (page_cache->page_info);
- page_cache->page_info = NULL;
- }
-
G_OBJECT_CLASS (ev_page_cache_parent_class)->finalize (object);
}
static void
build_height_to_page (EvPageCache *page_cache)
{
- gboolean swap;
+ gboolean swap, uniform, dual_even_left;
int i;
double uniform_height, page_height, next_page_height;
double saved_height;
+ gdouble u_width, u_height;
+ gint n_pages;
swap = (page_cache->rotation == 90 ||
page_cache->rotation == 270);
+ uniform = ev_document_is_page_size_uniform (page_cache->document);
+ n_pages = ev_document_get_n_pages (page_cache->document);
+ dual_even_left = (n_pages > 2);
+
g_free (page_cache->height_to_page);
g_free (page_cache->dual_height_to_page);
- page_cache->height_to_page = g_new0(double, page_cache->n_pages + 1);
- page_cache->dual_height_to_page = g_new0(double, page_cache->n_pages + 2);
-
+ page_cache->height_to_page = g_new0 (double, n_pages + 1);
+ page_cache->dual_height_to_page = g_new0 (double, n_pages + 2);
+
+ if (uniform)
+ ev_document_get_page_size (page_cache->document, 0, &u_width, &u_height);
+
saved_height = 0;
- for (i = 0; i <= page_cache->n_pages; i++) {
- if (page_cache->uniform) {
- if (!swap) {
- uniform_height = page_cache->uniform_height;
- } else {
- uniform_height = page_cache->uniform_width;
- }
- page_cache->height_to_page [i] = i * uniform_height;
+ for (i = 0; i <= n_pages; i++) {
+ if (uniform) {
+ uniform_height = swap ? u_width : u_height;
+ page_cache->height_to_page[i] = i * uniform_height;
} else {
- if (i < page_cache->n_pages) {
- if (!swap) {
- page_height = page_cache->size_cache [i].height;
- } else {
- page_height = page_cache->size_cache [i].width;
- }
+ if (i < n_pages) {
+ gdouble w, h;
+
+ ev_document_get_page_size (page_cache->document, i, &w, &h);
+ page_height = swap ? w : h;
} else {
page_height = 0;
}
- page_cache->height_to_page [i] = saved_height;
+ page_cache->height_to_page[i] = saved_height;
saved_height += page_height;
}
}
- if (page_cache->dual_even_left && !page_cache->uniform) {
- if (!swap) {
- saved_height = page_cache->size_cache [0].height;
- } else {
- saved_height = page_cache->size_cache [0].width;
- }
+ if (dual_even_left && !uniform) {
+ gdouble w, h;
+
+ ev_document_get_page_size (page_cache->document, 0, &w, &h);
+ saved_height = swap ? w : h;
} else {
saved_height = 0;
}
- for (i = page_cache->dual_even_left; i < page_cache->n_pages + 2; i += 2) {
- if (page_cache->uniform) {
- if (!swap) {
- uniform_height = page_cache->uniform_height;
- } else {
- uniform_height = page_cache->uniform_width;
- }
- page_cache->dual_height_to_page [i] = ((i + page_cache->dual_even_left) / 2) * uniform_height;
- if (i + 1 < page_cache->n_pages + 2)
- page_cache->dual_height_to_page [i + 1] = ((i + page_cache->dual_even_left) / 2) * uniform_height;
+
+ for (i = dual_even_left; i < n_pages + 2; i += 2) {
+ if (uniform) {
+ uniform_height = swap ? u_width : u_height;
+ page_cache->dual_height_to_page[i] = ((i + dual_even_left) / 2) * uniform_height;
+ if (i + 1 < n_pages + 2)
+ page_cache->dual_height_to_page[i + 1] = ((i + dual_even_left) / 2) * uniform_height;
} else {
- if (i + 1 < page_cache->n_pages) {
- if (!swap) {
- next_page_height = page_cache->size_cache [i + 1].height;
- } else {
- next_page_height = page_cache->size_cache [i + 1].width;
- }
+ if (i + 1 < n_pages) {
+ gdouble w, h;
+
+ ev_document_get_page_size (page_cache->document, i + 1, &w, &h);
+ next_page_height = swap ? w : h;
} else {
next_page_height = 0;
}
- if (i < page_cache->n_pages) {
- if (!swap) {
- page_height = page_cache->size_cache [i].height;
- } else {
- page_height = page_cache->size_cache [i].width;
- }
+
+ if (i < n_pages) {
+ gdouble w, h;
+
+ ev_document_get_page_size (page_cache->document, i, &w, &h);
+ page_height = swap ? w : h;
} else {
page_height = 0;
}
- if (i + 1 < page_cache->n_pages + 2) {
- page_cache->dual_height_to_page [i] = saved_height;
- page_cache->dual_height_to_page [i + 1] = saved_height;
+
+ if (i + 1 < n_pages + 2) {
+ page_cache->dual_height_to_page[i] = saved_height;
+ page_cache->dual_height_to_page[i + 1] = saved_height;
saved_height += MAX(page_height, next_page_height);
} else {
- page_cache->dual_height_to_page [i] = saved_height;
+ page_cache->dual_height_to_page[i] = saved_height;
}
}
}
}
-EvPageCache *
+static EvPageCache *
ev_page_cache_new (EvDocument *document)
{
EvPageCache *page_cache;
- EvPageCacheInfo *info;
- EvPageThumbsInfo *thumb_info;
- EvRenderContext *rc = NULL;
- gboolean has_thumbs;
- gint i;
page_cache = (EvPageCache *) g_object_new (EV_TYPE_PAGE_CACHE, NULL);
-
- ev_document_doc_mutex_lock ();
-
- /* We read page information out of the document */
-
- /* Assume all pages are the same size until proven otherwise */
- page_cache->uniform = TRUE;
- page_cache->has_labels = FALSE;
- page_cache->n_pages = ev_document_get_n_pages (document);
- page_cache->dual_even_left = (page_cache->n_pages > 2);
- page_cache->page_labels = g_new0 (char *, page_cache->n_pages);
- page_cache->max_width = 0;
- page_cache->max_height = 0;
- page_cache->page_info = ev_document_get_info (document);
- page_cache->thumbs_uniform = TRUE;
-
- if (page_cache->page_info->fields_mask & EV_DOCUMENT_INFO_TITLE) {
- page_cache->title = g_strdup (page_cache->page_info->title);
- } else {
- page_cache->title = NULL;
- }
-
- has_thumbs = EV_IS_DOCUMENT_THUMBNAILS (document);
-
- for (i = 0; i < page_cache->n_pages; i++) {
- EvPage *page;
- double page_width = 0;
- double page_height = 0;
- gint thumb_width = 0;
- gint thumb_height = 0;
-
- page = ev_document_get_page (document, i);
-
- ev_document_get_page_size (document, page, &page_width, &page_height);
-
- page_cache->page_labels[i] = ev_document_get_page_label (document, page);
-
- if (page_cache->page_labels[i] != NULL) {
-
- page_cache->max_label_chars = MAX (page_cache->max_label_chars,
- g_utf8_strlen (page_cache->page_labels[i], 256));
- if (!page_cache->has_labels) {
- gchar *expected_label;
-
- expected_label = g_strdup_printf ("%d", i + 1);
- if (strcmp (expected_label, page_cache->page_labels[i]))
- page_cache->has_labels = TRUE;
- g_free (expected_label);
- }
- }
-
- if (page_width > page_cache->max_width) {
- page_cache->max_width = page_width;
- }
-
- if (page_height > page_cache->max_height) {
- page_cache->max_height = page_height;
- }
-
- if (i == 0) {
- page_cache->uniform_width = page_width;
- page_cache->uniform_height = page_height;
- } else if (page_cache->uniform &&
- (page_cache->uniform_width != page_width ||
- page_cache->uniform_height != page_height)) {
- /* It's a different page size. Backfill the array. */
- int j;
-
- page_cache->size_cache = g_new0 (EvPageCacheInfo, page_cache->n_pages);
-
- for (j = 0; j < i; j++) {
- info = &(page_cache->size_cache [j]);
- info->width = page_cache->uniform_width;
- info->height = page_cache->uniform_height;
- }
- page_cache->uniform = FALSE;
-
- }
-
- if (! page_cache->uniform) {
- info = &(page_cache->size_cache [i]);
-
- info->width = page_width;
- info->height = page_height;
- }
-
- if (!has_thumbs) {
- g_object_unref (page);
- continue;
- }
-
- if (!rc) {
- rc = ev_render_context_new (page, 0, (gdouble)THUMBNAIL_WIDTH / page_width);
- } else {
- ev_render_context_set_page (rc, page);
- ev_render_context_set_scale (rc, (gdouble)THUMBNAIL_WIDTH / page_width);
- }
-
- ev_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (document),
- rc, &thumb_width, &thumb_height);
-
- if (thumb_width > page_cache->thumbs_max_width) {
- page_cache->thumbs_max_width = thumb_width;
- }
-
- if (thumb_height > page_cache->thumbs_max_height) {
- page_cache->thumbs_max_height = thumb_height;
- }
-
- if (i == 0) {
- page_cache->thumbs_uniform_width = thumb_width;
- page_cache->thumbs_uniform_height = thumb_height;
- } else if (page_cache->thumbs_uniform &&
- (page_cache->thumbs_uniform_width != thumb_width ||
- page_cache->thumbs_uniform_height != thumb_height)) {
- /* It's a different thumbnail size. Backfill the array. */
- int j;
-
- page_cache->thumbs_size_cache = g_new0 (EvPageThumbsInfo, page_cache->n_pages);
-
- for (j = 0; j < i; j++) {
- thumb_info = &(page_cache->thumbs_size_cache [j]);
- thumb_info->width = page_cache->thumbs_uniform_width;
- thumb_info->height = page_cache->thumbs_uniform_height;
- }
- page_cache->thumbs_uniform = FALSE;
- }
-
- if (! page_cache->thumbs_uniform) {
- thumb_info = &(page_cache->thumbs_size_cache [i]);
-
- thumb_info->width = thumb_width;
- thumb_info->height = thumb_height;
- }
-
- g_object_unref (page);
- }
-
- if (rc) {
- g_object_unref (rc);
- }
+ page_cache->document = document;
build_height_to_page (page_cache);
- /* make some sanity check assertions */
- if (! page_cache->uniform)
- g_assert (page_cache->size_cache != NULL);
- if (page_cache->uniform && page_cache->n_pages > 0)
- g_assert (page_cache->uniform_width > 0 && page_cache->uniform_height > 0);
-
- ev_document_doc_mutex_unlock ();
-
- if (page_cache->n_pages > 0)
+ if (ev_document_get_n_pages (page_cache->document) > 0)
ev_page_cache_set_current_page (page_cache, 0);
return page_cache;
}
-gint
-ev_page_cache_get_n_pages (EvPageCache *page_cache)
-{
- g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), 0);
-
- return page_cache->n_pages;
-}
-
gint
ev_page_cache_get_current_page (EvPageCache *page_cache)
{
int page)
{
g_return_if_fail (EV_IS_PAGE_CACHE (page_cache));
- g_return_if_fail (page >= 0 || page < page_cache->n_pages);
if (page == page_cache->current_page)
return;
gboolean
ev_page_cache_set_page_label (EvPageCache *page_cache,
- const char *page_label)
+ const gchar *page_label)
{
- gint i, page;
- long value;
- char *endptr = NULL;
-
- g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), FALSE);
- g_return_val_if_fail (page_label != NULL, FALSE);
-
- /* First, look for a literal label match */
- for (i = 0; i < page_cache->n_pages; i ++) {
- if (page_cache->page_labels[i] != NULL &&
- ! strcmp (page_label, page_cache->page_labels[i])) {
- ev_page_cache_set_current_page (page_cache, i);
- return TRUE;
- }
- }
+ gint page;
- /* Second, look for a match with case insensitively */
- for (i = 0; i < page_cache->n_pages; i++) {
- if (page_cache->page_labels[i] != NULL &&
- ! strcasecmp (page_label, page_cache->page_labels[i])) {
- ev_page_cache_set_current_page (page_cache, i);
- return TRUE;
- }
- }
+ g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), FALSE);
- /* Next, parse the label, and see if the number fits */
- value = strtol (page_label, &endptr, 10);
- if (endptr[0] == '\0') {
- /* Page number is an integer */
- page = MIN (G_MAXINT, value);
-
- /* convert from a page label to a page offset */
- page --;
- if (page >= 0 &&
- page < page_cache->n_pages) {
- ev_page_cache_set_current_page (page_cache, page);
- return TRUE;
- }
+ if (ev_document_find_page_by_label (page_cache->document, page_label, &page)) {
+ ev_page_cache_set_current_page (page_cache, page);
+ return TRUE;
}
return FALSE;
}
-const char *
-ev_page_cache_get_title (EvPageCache *page_cache)
-{
- g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), NULL);
-
- return page_cache->title;
-}
-
void
ev_page_cache_get_size (EvPageCache *page_cache,
gint page,
double w, h;
g_return_if_fail (EV_IS_PAGE_CACHE (page_cache));
- g_return_if_fail (page >= 0 && page < page_cache->n_pages);
-
- if (page_cache->uniform) {
- w = page_cache->uniform_width;
- h = page_cache->uniform_height;
- } else {
- EvPageCacheInfo *info;
- info = &(page_cache->size_cache [page]);
-
- w = info->width;
- h = info->height;
- }
+ ev_document_get_page_size (page_cache->document, page, &w, &h);
w = w * scale + 0.5;
h = h * scale + 0.5;
gfloat scale,
gint *width)
{
+ double w, h;
+
g_return_if_fail (EV_IS_PAGE_CACHE (page_cache));
- if (width) {
- if (rotation == 0 || rotation == 180) {
- *width = page_cache->max_width * scale;
- } else {
- *width = page_cache->max_height * scale;
- }
- }
+ if (!width)
+ return;
+
+ ev_document_get_max_page_size (page_cache->document, &w, &h);
+ *width = (rotation == 0 || rotation == 180) ? w * scale : h * scale;
}
void
gfloat scale,
gint *height)
{
+ double w, h;
+
g_return_if_fail (EV_IS_PAGE_CACHE (page_cache));
- if (height) {
- if (rotation == 0 || rotation == 180) {
- *height = page_cache->max_height * scale;
- } else {
- *height = page_cache->max_width * scale;
- }
- }
+ if (!height)
+ return;
+
+ ev_document_get_max_page_size (page_cache->document, &w, &h);
+ *height = (rotation == 0 || rotation == 180) ? h * scale : w * scale;
}
-void
+void
ev_page_cache_get_height_to_page (EvPageCache *page_cache,
gint page,
gint rotation,
{
g_return_if_fail (EV_IS_PAGE_CACHE (page_cache));
g_return_if_fail (page >= 0);
- g_return_if_fail (!height || page <= page_cache->n_pages);
- g_return_if_fail (!dual_height || page <= page_cache->n_pages + 1);
if (page_cache->rotation != rotation) {
page_cache->rotation = rotation;
build_height_to_page (page_cache);
}
-
+
if (height)
- *height = page_cache->height_to_page [page] * scale;
+ *height = page_cache->height_to_page[page] * scale;
if (dual_height)
- *dual_height = page_cache->dual_height_to_page [page] * scale;
-}
-
-void
-ev_page_cache_get_thumbnail_size (EvPageCache *page_cache,
- gint page,
- gint rotation,
- gint *width,
- gint *height)
-{
- gint w, h;
-
- g_return_if_fail (EV_IS_PAGE_CACHE (page_cache));
- g_return_if_fail (page >= 0 && page < page_cache->n_pages);
-
- if (page_cache->thumbs_uniform) {
- w = page_cache->thumbs_uniform_width;
- h = page_cache->thumbs_uniform_height;
- } else {
- EvPageThumbsInfo *info;
-
- info = &(page_cache->thumbs_size_cache [page]);
-
- w = info->width;
- h = info->height;
- }
-
- if (rotation == 0 || rotation == 180) {
- if (width) *width = w;
- if (height) *height = h;
- } else {
- if (width) *width = h;
- if (height) *height = w;
- }
-}
-
-gint
-ev_page_cache_get_max_label_chars (EvPageCache *page_cache)
-{
- g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), 0);
-
- return page_cache->max_label_chars;
+ *dual_height = page_cache->dual_height_to_page[page] * scale;
}
gboolean
ev_page_cache_get_dual_even_left (EvPageCache *page_cache)
{
g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), 0);
-
- return page_cache->dual_even_left;
-}
-
-gchar *
-ev_page_cache_get_page_label (EvPageCache *page_cache,
- gint page)
-{
- g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), NULL);
- g_return_val_if_fail (page >= 0 && page < page_cache->n_pages, NULL);
-
- if (page_cache->page_labels[page] == NULL)
- return g_strdup_printf ("%d", page + 1);
-
- return g_strdup (page_cache->page_labels[page]);
-}
-
-gboolean
-ev_page_cache_has_nonnumeric_page_labels (EvPageCache *page_cache)
-{
- g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), FALSE);
- return page_cache->has_labels;
-}
-
-const EvDocumentInfo *
-ev_page_cache_get_info (EvPageCache *page_cache)
-{
- g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), NULL);
- return page_cache->page_info;
+ return (ev_document_get_n_pages (page_cache->document) > 2);
}
#define PAGE_CACHE_STRING "ev-page-cache"
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