X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=libview%2Fev-page-cache.c;h=8257ce42763b7aeeddab270238cb3c74e5663d4e;hb=0408e03f3da0e9e3d94b591684d5fb867115effc;hp=9d271a042fc6e3019066661f475d7cf46a4f977f;hpb=c4b192c34c4758bd078d1a212d69c6ae5084d6c8;p=evince.git diff --git a/libview/ev-page-cache.c b/libview/ev-page-cache.c index 9d271a04..8257ce42 100644 --- a/libview/ev-page-cache.c +++ b/libview/ev-page-cache.c @@ -5,14 +5,6 @@ #include #include -#define THUMBNAIL_WIDTH 100 - -typedef struct _EvPageThumbsInfo -{ - gint width; - gint height; -} EvPageThumbsInfo; - struct _EvPageCache { GObject parent; @@ -23,18 +15,7 @@ struct _EvPageCache gboolean dual_even_left; - double* height_to_page; - double* dual_height_to_page; - int rotation; - - /* 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 @@ -104,216 +85,23 @@ ev_page_cache_finalize (GObject *object) page_cache->document = NULL; - if (page_cache->thumbs_size_cache) { - g_free (page_cache->thumbs_size_cache); - page_cache->thumbs_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; - } - G_OBJECT_CLASS (ev_page_cache_parent_class)->finalize (object); } -static void -build_height_to_page (EvPageCache *page_cache) -{ - 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, 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 <= n_pages; i++) { - if (uniform) { - uniform_height = swap ? u_width : u_height; - page_cache->height_to_page[i] = i * uniform_height; - } else { - 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; - saved_height += page_height; - } - } - - 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 = 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 < 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 < 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 < 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; - } - } - } -} - static EvPageCache * ev_page_cache_new (EvDocument *document) { EvPageCache *page_cache; - EvPageThumbsInfo *thumb_info; - EvRenderContext *rc = NULL; - gint i, n_pages; page_cache = (EvPageCache *) g_object_new (EV_TYPE_PAGE_CACHE, NULL); page_cache->document = document; - n_pages = ev_document_get_n_pages (document); - - build_height_to_page (page_cache); - - if (!EV_IS_DOCUMENT_THUMBNAILS (document)) { - if (n_pages > 0) - ev_page_cache_set_current_page (page_cache, 0); - return page_cache; - } - - /* Assume all pages are the same size until proven otherwise */ - page_cache->thumbs_uniform = TRUE; - - for (i = 0; i < n_pages; i++) { - EvPage *page; - gdouble page_width, page_height; - gint thumb_width = 0; - gint thumb_height = 0; - - page = ev_document_get_page (document, i); - - ev_document_get_page_size (document, i, &page_width, &page_height); - - 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, 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); - } - - if (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; } -gboolean -ev_page_cache_check_dimensions (EvPageCache *page_cache) -{ - gdouble document_width, document_height; - - ev_document_get_max_page_size (page_cache->document, - &document_width, &document_height); - - return (document_width > 0 && document_height > 0); -} - gint ev_page_cache_get_current_page (EvPageCache *page_cache) { @@ -421,69 +209,6 @@ ev_page_cache_get_max_height (EvPageCache *page_cache, *height = (rotation == 0 || rotation == 180) ? h * scale : w * scale; } -void -ev_page_cache_get_height_to_page (EvPageCache *page_cache, - gint page, - gint rotation, - gfloat scale, - gint *height, - gint *dual_height) -{ - g_return_if_fail (EV_IS_PAGE_CACHE (page_cache)); - g_return_if_fail (page >= 0); - - 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; - - 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)); - - 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; - } -} - -gboolean -ev_page_cache_get_dual_even_left (EvPageCache *page_cache) -{ - g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), 0); - - return (ev_document_get_n_pages (page_cache->document) > 2); -} - #define PAGE_CACHE_STRING "ev-page-cache" EvPageCache *