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=a6d78228b5d82d455cad9de47a1e7cd2470ad822;hpb=bf325e9279324f02bcadc0145cd553ed94c23d2d;p=evince.git diff --git a/backend/ev-page-cache.c b/backend/ev-page-cache.c index a6d78228..17cd6414 100644 --- a/backend/ev-page-cache.c +++ b/backend/ev-page-cache.c @@ -19,12 +19,21 @@ struct _EvPageCache int n_pages; char *title; char **page_labels; - + + gint max_label_chars; + gboolean has_labels; gboolean uniform; + double uniform_width; double uniform_height; + double max_width; + double max_height; + double* height_to_page; + double* dual_height_to_page; + EvPageCacheInfo *size_cache; + EvDocumentInfo *page_info; }; struct _EvPageCacheClass @@ -52,6 +61,7 @@ static void ev_page_cache_init (EvPageCache *page_cache) { page_cache->current_page = -1; + page_cache->max_label_chars = 0; } static void @@ -84,6 +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 * @@ -93,6 +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); @@ -102,8 +117,11 @@ _ev_page_cache_new (EvDocument *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->page_labels = g_new0 (char *, page_cache->n_pages); + 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) { @@ -116,10 +134,33 @@ _ev_page_cache_new (EvDocument *document) for (i = 0; i < page_cache->n_pages; i++) { double page_width = 0; double page_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); + page_cache->page_labels[i] = ev_document_get_page_label (document, i); + + 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; @@ -148,9 +189,46 @@ _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); + if (page_cache->uniform) + g_assert (page_cache->uniform_width > 0 && page_cache->uniform_height > 0); ev_document_doc_mutex_unlock (); @@ -274,11 +352,68 @@ 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); } + + +void +ev_page_cache_get_max_width (EvPageCache *page_cache, + gfloat scale, + gint *width) +{ + g_return_if_fail (EV_IS_PAGE_CACHE (page_cache)); + + if (width) + *width = page_cache->max_width * scale; +} + +void +ev_page_cache_get_max_height (EvPageCache *page_cache, + gfloat scale, + gint *height) +{ + g_return_if_fail (EV_IS_PAGE_CACHE (page_cache)); + + if (height) + *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, gint page) @@ -292,6 +427,21 @@ ev_page_cache_get_page_label (EvPageCache *page_cache, 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; +} + gboolean ev_page_cache_next_page (EvPageCache *page_cache)