X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=backend%2Fev-page-cache.c;h=17cd641437eaead3c315ab730b0e1c5470cffbc6;hb=6c9ba464fdfc4b92f5d472705a53eb3f476431fb;hp=8fb8bcd17f6b4e6b189eece16653dfe578d57afa;hpb=0616c7d07421dc271f0a1b9a10de9e7c7d44582d;p=evince.git diff --git a/backend/ev-page-cache.c b/backend/ev-page-cache.c index 8fb8bcd1..17cd6414 100644 --- a/backend/ev-page-cache.c +++ b/backend/ev-page-cache.c @@ -20,18 +20,20 @@ struct _EvPageCache char *title; char **page_labels; + gint max_label_chars; gboolean has_labels; gboolean uniform; double uniform_width; double uniform_height; - double max_width_page_width; - double max_width_page_height; - double max_height_page_width; - double max_height_page_height; + double max_width; + double max_height; + double* height_to_page; + double* dual_height_to_page; EvPageCacheInfo *size_cache; + EvDocumentInfo *page_info; }; struct _EvPageCacheClass @@ -59,6 +61,7 @@ static void ev_page_cache_init (EvPageCache *page_cache) { page_cache->current_page = -1; + page_cache->max_label_chars = 0; } static void @@ -91,6 +94,10 @@ ev_page_cache_finalize (GObject *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); + + ev_document_info_free (page_cache->page_info); } EvPageCache * @@ -100,6 +107,7 @@ _ev_page_cache_new (EvDocument *document) EvPageCache *page_cache; EvPageCacheInfo *info; gint i; + double saved_height; page_cache = (EvPageCache *) g_object_new (EV_TYPE_PAGE_CACHE, NULL); @@ -112,10 +120,8 @@ _ev_page_cache_new (EvDocument *document) page_cache->has_labels = FALSE; page_cache->n_pages = ev_document_get_n_pages (document); page_cache->page_labels = g_new0 (char *, page_cache->n_pages); - page_cache->max_width_page_width = 0; - page_cache->max_width_page_height = 0; - page_cache->max_height_page_width = 0; - page_cache->max_height_page_height = 0; + page_cache->max_width = 0; + page_cache->max_height = 0; doc_info = ev_document_get_info (document); if (doc_info->fields_mask & EV_DOCUMENT_INFO_TITLE) { @@ -132,26 +138,29 @@ _ev_page_cache_new (EvDocument *document) ev_document_get_page_size (document, i, &page_width, &page_height); page_cache->page_labels[i] = ev_document_get_page_label (document, i); - - if (!page_cache->has_labels && page_cache->page_labels[i] != NULL) { - gchar *expected_label; + + 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); + 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_width) { - page_cache->max_width_page_width = page_width; - page_cache->max_width_page_height = page_height; + if (page_width > page_cache->max_width) { + page_cache->max_width = page_width; } - if (page_height > page_cache->max_height_page_height) { - page_cache->max_height_page_width = page_width; - page_cache->max_height_page_height = page_height; + 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; @@ -180,6 +189,41 @@ _ev_page_cache_new (EvDocument *document) } } + 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); + + saved_height = 0; + for (i = 0; i < page_cache->n_pages; i++) { + + if (page_cache->uniform) { + page_cache->height_to_page [i] = (i + 1) * page_cache->uniform_height; + } else { + page_cache->height_to_page [i] = saved_height + page_cache->size_cache [i].height; + saved_height = page_cache->height_to_page [i]; + } + } + + saved_height = 0; + for (i = 0; i < page_cache->n_pages; i += 2) { + + if (page_cache->uniform) { + page_cache->dual_height_to_page [i / 2] = (i / 2 + 1) * page_cache->uniform_height; + } else { + if (i == page_cache->n_pages - 1) { + page_cache->dual_height_to_page [i / 2] = + saved_height + page_cache->size_cache [i].height; + } + else { + page_cache->dual_height_to_page [i / 2] = saved_height + + MAX(page_cache->size_cache [i].height, + page_cache->size_cache [i + 1].height); + saved_height = page_cache->dual_height_to_page [i / 2]; + } + } + } + + page_cache->page_info = ev_document_get_info (document); + /* make some sanity check assertions */ if (! page_cache->uniform) g_assert (page_cache->size_cache != NULL); @@ -236,7 +280,7 @@ ev_page_cache_set_page_label (EvPageCache *page_cache, g_return_val_if_fail (page_label != NULL, FALSE); /* First, look for a literal label match */ - for (i = 0; i < page_cache->n_pages && page_cache->has_labels; i ++) { + 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); @@ -308,43 +352,67 @@ ev_page_cache_get_size (EvPageCache *page_cache, } if (width) - *width = (*width) * scale; + *width = (int) ((*width) * scale + 0.5); if (width) - *height = (*height) * scale; + *height = (int) ((*height) * scale + 0.5); } -/* Note that these aren't necessarily from the same page. - */ void -ev_page_cache_get_max_width_size (EvPageCache *page_cache, +ev_page_cache_get_max_width (EvPageCache *page_cache, gfloat scale, - gint *width, - gint *height) + gint *width) { g_return_if_fail (EV_IS_PAGE_CACHE (page_cache)); if (width) - *width = page_cache->max_width_page_width * scale; - if (height) - *height = page_cache->max_width_page_height * scale; + *width = page_cache->max_width * scale; } void -ev_page_cache_get_max_height_size (EvPageCache *page_cache, +ev_page_cache_get_max_height (EvPageCache *page_cache, gfloat scale, - gint *width, gint *height) { g_return_if_fail (EV_IS_PAGE_CACHE (page_cache)); - if (width) - *width = page_cache->max_height_page_width * scale; if (height) - *height = page_cache->max_height_page_height * scale; + *height = page_cache->max_height * scale; } +void +ev_page_cache_get_height_to_page (EvPageCache *page_cache, + gint page, + gfloat scale, + gint *height, + gint *dual_height) +{ + double result = 0.0; + double dual_result = 0.0; + + g_return_if_fail (EV_IS_PAGE_CACHE (page_cache)); + + if (page > 0) + result = page_cache->height_to_page [page - 1]; + + if (height) + *height = result * scale; + + if (page > 1) + dual_result = page_cache->dual_height_to_page [page / 2 - 1]; + + if (dual_height) + *dual_height = dual_result * scale; +} + +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; +} gchar * ev_page_cache_get_page_label (EvPageCache *page_cache, @@ -366,6 +434,15 @@ ev_page_cache_has_nonnumeric_page_labels (EvPageCache *page_cache) 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; +} + + gboolean ev_page_cache_next_page (EvPageCache *page_cache) {