From 9d13c75153b88be90b227c98d809b25db179805d Mon Sep 17 00:00:00 2001
From: Moritz Lipp <mlq@pwmt.org>
Date: Sat, 1 Oct 2011 09:40:44 +0200
Subject: [PATCH] Fit page to width / bestfit

---
 shortcuts.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 55 insertions(+), 1 deletion(-)

diff --git a/shortcuts.c b/shortcuts.c
index 3edf917..a60d6d5 100644
--- a/shortcuts.c
+++ b/shortcuts.c
@@ -22,10 +22,64 @@ sc_abort(girara_session_t* session, girara_argument_t* UNUSED(argument),
 }
 
 bool
-sc_adjust_window(girara_session_t* session, girara_argument_t* UNUSED(argument),
+sc_adjust_window(girara_session_t* session, girara_argument_t* argument,
     unsigned int UNUSED(t))
 {
   g_return_val_if_fail(session != NULL, false);
+  g_return_val_if_fail(session->global.data != NULL, false);
+  zathura_t* zathura = session->global.data;
+  g_return_val_if_fail(argument != NULL, false);
+
+  unsigned int* pages_per_row = girara_setting_get(session, "pages-per-row");
+
+  if (zathura->ui.page_view == NULL || zathura->document == NULL || pages_per_row == NULL) {
+    goto error_ret;
+  }
+
+  /* get window size */
+  /* TODO: Get correct size of the view widget */
+  gint width;
+  gint height;
+  gtk_window_get_size(GTK_WINDOW(session->gtk.window), &width, &height);
+
+  /* calculate total width and max-height */
+  double total_width = 0;
+  double max_height = 0;
+
+  for (unsigned int page_id = 0; page_id < *pages_per_row; page_id++) {
+    if (page_id == zathura->document->number_of_pages) {
+      break;
+    }
+
+    zathura_page_t* page = zathura->document->pages[page_id];
+    if (page == NULL) {
+      goto error_free;
+    }
+
+    if (page->height > max_height) {
+      max_height = page->height;
+    }
+
+    total_width += page->width;
+  }
+
+  if (argument->n == ADJUST_WIDTH) {
+    zathura->document->scale = width / total_width;
+  } else if (argument->n == ADJUST_BESTFIT) {
+    zathura->document->scale = height / max_height;
+  } else {
+    goto error_free;
+  }
+
+  /* re-render all pages */
+  render_all(zathura);
+
+error_free:
+
+  /* cleanup */
+  free(pages_per_row);
+
+error_ret:
 
   return false;
 }