Check for execinfo.h and use it only if it exists.

[evince.git] / shell / ev-page-cache.c

diff --git a/shell/ev-page-cache.c b/shell/ev-page-cache.c
index 1b0f8e4604adc130f952c3e5f94b8ef8fed3ba42..eb88ed9d607880b346382bc6378e848a1d40c5ae 100644 (file)
--- a/shell/ev-page-cache.c
+++ b/shell/ev-page-cache.c
@@ -33,7 +33,7 @@ struct _EvPageCache
        double* height_to_page;
        double* dual_height_to_page;
 
-       EvOrientation orientation;
+       int rotation;
 
        EvPageCacheInfo *size_cache;
        EvDocumentInfo *page_info;
@@ -111,8 +111,8 @@ build_height_to_page (EvPageCache *page_cache)
        double uniform_height, page_height, next_page_height;
        double saved_height;
 
-       swap = (page_cache->orientation == EV_ORIENTATION_LANDSCAPE ||
-               page_cache->orientation == EV_ORIENTATION_SEASCAPE);
+       swap = (page_cache->rotation == 90 ||
+               page_cache->rotation == 270);
 
        g_free (page_cache->height_to_page);
        g_free (page_cache->dual_height_to_page);
@@ -130,7 +130,7 @@ build_height_to_page (EvPageCache *page_cache)
                        }
                        page_cache->height_to_page [i] = (i + 1) * uniform_height;
                } else {
-                       if (swap) {
+                       if (!swap) {
                                page_height = page_cache->size_cache [i].height;
                        } else {
                                page_height = page_cache->size_cache [i].width;
@@ -186,7 +186,6 @@ 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->orientation = ev_document_get_orientation (document);
        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;
@@ -262,7 +261,7 @@ ev_page_cache_new (EvDocument *document)
        /* make some sanity check assertions */
        if (! page_cache->uniform)
                g_assert (page_cache->size_cache != NULL);
-       if (page_cache->uniform)
+       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 ();
@@ -363,55 +362,50 @@ ev_page_cache_get_title (EvPageCache *page_cache)
 void
 ev_page_cache_get_size (EvPageCache  *page_cache,
                        gint          page,
-                       EvOrientation orientation,
+                       gint          rotation,
                        gfloat        scale,
                        gint         *width,
                        gint         *height)
 {
+       int 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) {
-               if (width)
-                       *width = page_cache->uniform_width;
-               if (height)
-                       *height = page_cache->uniform_height;
+               w = page_cache->uniform_width;
+               h = page_cache->uniform_height;
        } else {
                EvPageCacheInfo *info;
 
                info = &(page_cache->size_cache [page]);
                
-               if (width)
-                       *width = info->width;
-               if (height)
-                       *height = info->height;
+               w = info->width;
+               h = info->height;
        }
 
-       if (orientation == EV_ORIENTATION_PORTRAIT ||
-           orientation == EV_ORIENTATION_UPSIDEDOWN) {
-               if (width)
-                       *width = (int) ((*width) * scale + 0.5);
-               if (height)
-                       *height = (int) ((*height) * scale + 0.5);
+       w = (int) (w * scale + 0.5);
+       h = (int) (h * scale + 0.5);
+
+       if (rotation == 0 || rotation == 180) {
+               if (width) *width = w;
+               if (height) *height = h;
        } else {
-               if (width)
-                       *width = (int) ((*height) * scale + 0.5);
-               if (height)
-                       *height = (int) ((*width) * scale + 0.5);
+               if (width) *width = h;
+               if (height) *height = w;
        }
 }
 
 void
 ev_page_cache_get_max_width (EvPageCache   *page_cache,
-                            EvOrientation  orientation,
+                            gint           rotation,
                             gfloat         scale,
                             gint          *width)
 {
        g_return_if_fail (EV_IS_PAGE_CACHE (page_cache));
 
        if (width) {
-               if (orientation == EV_ORIENTATION_PORTRAIT ||
-                   orientation == EV_ORIENTATION_UPSIDEDOWN) {
+               if (rotation == 0 || rotation == 180) {
                        *width = page_cache->max_width * scale;
                } else {
                        *width = page_cache->max_height * scale;
@@ -421,15 +415,14 @@ ev_page_cache_get_max_width (EvPageCache   *page_cache,
 
 void
 ev_page_cache_get_max_height (EvPageCache   *page_cache,
-                             EvOrientation  orientation,
+                             gint           rotation,
                              gfloat         scale,
                              gint          *height)
 {
        g_return_if_fail (EV_IS_PAGE_CACHE (page_cache));
 
        if (height) {
-               if (orientation == EV_ORIENTATION_PORTRAIT ||
-                   orientation == EV_ORIENTATION_UPSIDEDOWN) {
+               if (rotation == 0 || rotation == 180) {
                        *height = page_cache->max_height * scale;
                } else {
                        *height = page_cache->max_width * scale;
@@ -440,7 +433,7 @@ ev_page_cache_get_max_height (EvPageCache   *page_cache,
 void    
 ev_page_cache_get_height_to_page (EvPageCache   *page_cache,
                                  gint           page,
-                                 EvOrientation  orientation,
+                                 gint           rotation,
                                  gfloat         scale,
                                  gint          *height,
                                  gint          *dual_height)
@@ -450,8 +443,8 @@ ev_page_cache_get_height_to_page (EvPageCache   *page_cache,
        
        g_return_if_fail (EV_IS_PAGE_CACHE (page_cache));
 
-       if (page_cache->orientation != orientation) {
-               page_cache->orientation = orientation;
+       if (page_cache->rotation != rotation) {
+               page_cache->rotation = rotation;
                build_height_to_page (page_cache);
        }