#include "ev-page-cache.h"
#include "ev-job-queue.h"
+#include "ev-document-thumbnails.h"
#include <stdlib.h>
#include <string.h>
+#define THUMBNAIL_WIDTH 100
+
typedef struct _EvPageCacheInfo
{
double width;
double height;
-}
-EvPageCacheInfo;
+} EvPageCacheInfo;
+typedef struct _EvPageThumbsInfo
+{
+ gint width;
+ gint height;
+} EvPageThumbsInfo;
struct _EvPageCache
{
gint max_label_chars;
gboolean has_labels;
gboolean uniform;
+ gboolean dual_even_left;
double uniform_width;
double uniform_height;
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
GObjectClass parent_class;
void (* page_changed) (EvPageCache *page_cache, gint page);
+ void (* history_changed) (EvPageCache *page_cache, gint page);
};
enum
{
PAGE_CHANGED,
+ HISTORY_CHANGED,
N_SIGNALS,
};
G_TYPE_NONE, 1,
G_TYPE_INT);
+ signals [HISTORY_CHANGED] =
+ g_signal_new ("history-changed",
+ EV_TYPE_PAGE_CACHE,
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (EvPageCacheClass, history_changed),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__INT,
+ G_TYPE_NONE, 1,
+ G_TYPE_INT);
+
}
static void
page_cache = EV_PAGE_CACHE (object);
- g_free (page_cache->title);
- g_free (page_cache->size_cache);
- g_free (page_cache->height_to_page);
- g_free (page_cache->dual_height_to_page);
+ if (page_cache->title) {
+ g_free (page_cache->title);
+ page_cache->title = NULL;
+ }
+
+ if (page_cache->size_cache) {
+ g_free (page_cache->size_cache);
+ page_cache->size_cache = NULL;
+ }
+
+ if (page_cache->height_to_page) {
+ g_free (page_cache->height_to_page);
+ page_cache->height_to_page = NULL;
+ }
+
+ if (page_cache->dual_height_to_page) {
+ g_free (page_cache->dual_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;
+ }
- ev_document_info_free (page_cache->page_info);
+ G_OBJECT_CLASS (ev_page_cache_parent_class)->finalize (object);
}
static void
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);
- page_cache->dual_height_to_page = g_new0(double, page_cache->n_pages / 2 + 1);
+ 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);
saved_height = 0;
- for (i = 0; i < page_cache->n_pages; i++) {
+ 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 + 1) * uniform_height;
+ page_cache->height_to_page [i] = i * uniform_height;
} else {
- if (!swap) {
- page_height = page_cache->size_cache [i].height;
+ 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;
+ }
} else {
- page_height = page_cache->size_cache [i].width;
+ page_height = 0;
}
- page_cache->height_to_page [i] = saved_height + page_height;
- saved_height = page_cache->height_to_page [i];
+ page_cache->height_to_page [i] = saved_height;
+ saved_height += page_height;
}
}
-
- saved_height = 0;
- for (i = 0; i < page_cache->n_pages; i += 2) {
+
+ 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;
+ }
+ } 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 / 2] = (i / 2 + 1) * uniform_height;
+ 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;
} else {
- if (!swap) {
- page_height = page_cache->size_cache [i].height;
- next_page_height = page_cache->size_cache [i + 1].height;
+ 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;
+ }
} else {
- page_height = page_cache->size_cache [i].width;
- next_page_height = page_cache->size_cache [i + 1].width;
+ next_page_height = 0;
}
- if (i == page_cache->n_pages - 1) {
- page_cache->dual_height_to_page [i / 2] =
- saved_height + page_height;
+ 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;
+ }
+ } else {
+ page_height = 0;
}
- else {
- page_cache->dual_height_to_page [i / 2] = saved_height +
- MAX(page_height, next_page_height);
- saved_height = page_cache->dual_height_to_page [i / 2];
+ 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;
+ saved_height += MAX(page_height, next_page_height);
+ } else {
+ page_cache->dual_height_to_page [i] = saved_height;
}
}
}
{
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);
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);
page_cache->title = NULL;
}
+ has_thumbs = EV_IS_DOCUMENT_THUMBNAILS (document);
+
for (i = 0; i < page_cache->n_pages; i++) {
double page_width = 0;
double page_height = 0;
-
+ gint thumb_width = 0;
+ gint thumb_height = 0;
+
ev_document_get_page_size (document, i, &page_width, &page_height);
page_cache->page_labels[i] = ev_document_get_page_label (document, i);
info->width = page_width;
info->height = page_height;
}
+
+ if (!has_thumbs)
+ continue;
+
+ if (!rc) {
+ rc = ev_render_context_new (0, i, (gdouble)THUMBNAIL_WIDTH / page_width);
+ } else {
+ ev_render_context_set_page (rc, i);
+ 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;
+ }
+ }
+
+ if (rc) {
+ g_object_unref (rc);
}
build_height_to_page (page_cache);
g_signal_emit (page_cache, signals[PAGE_CHANGED], 0, page);
}
+void
+ev_page_cache_set_current_page_history (EvPageCache *page_cache,
+ int page)
+{
+ if (abs (page - page_cache->current_page) > 1)
+ g_signal_emit (page_cache, signals [HISTORY_CHANGED], 0, page);
+
+ ev_page_cache_set_current_page (page_cache, page);
+}
+
gboolean
ev_page_cache_set_page_label (EvPageCache *page_cache,
const char *page_label)
/* convert from a page label to a page offset */
page --;
if (page >= 0 &&
- page < page_cache->n_pages &&
- page_cache->page_labels[page] == NULL) {
+ page < page_cache->n_pages) {
ev_page_cache_set_current_page (page_cache, page);
return TRUE;
}
gint *width,
gint *height)
{
- int w, h;
+ double w, h;
g_return_if_fail (EV_IS_PAGE_CACHE (page_cache));
g_return_if_fail (page >= 0 && page < page_cache->n_pages);
h = info->height;
}
- w = (int) (w * scale + 0.5);
- h = (int) (h * scale + 0.5);
+ w = w * scale + 0.5;
+ h = h * scale + 0.5;
if (rotation == 0 || rotation == 180) {
- if (width) *width = w;
- if (height) *height = h;
+ if (width) *width = (int)w;
+ if (height) *height = (int)h;
} else {
- if (width) *width = h;
- if (height) *height = w;
+ if (width) *width = (int)h;
+ if (height) *height = (int)w;
}
}
gint *height,
gint *dual_height)
{
- double result = 0.0;
- double dual_result = 0.0;
-
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 (page > 0)
- result = page_cache->height_to_page [page - 1];
if (height)
- *height = result * scale;
+ *height = page_cache->height_to_page [page] * scale;
- if (page > 1)
- dual_result = page_cache->dual_height_to_page [page / 2 - 1];
-
if (dual_height)
- *dual_height = dual_result * scale;
+ *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
return page_cache->max_label_chars;
}
+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)