From 25998f832079decd8cbb2092b3cfb41d9fb75a3b Mon Sep 17 00:00:00 2001
From: Abdo Roig-Maranges <abdo.roig@gmail.com>
Date: Sun, 20 Oct 2013 17:05:15 +0200
Subject: [PATCH] make the document object aware of page layout

Now the document object knows about pages_per_row, first_page_column and
page_padding, so we will be able to compute sizes and positions of the
document view without querying the GTK widgets.
---
 document.c | 40 ++++++++++++++++++++++++++++++++++++++++
 document.h | 35 +++++++++++++++++++++++++++++++++++
 2 files changed, 75 insertions(+)

diff --git a/document.c b/document.c
index aa55a5e..7fd104d 100644
--- a/document.c
+++ b/document.c
@@ -52,6 +52,9 @@ struct zathura_document_s {
   int page_offset; /**< Page offset */
   double cell_width; /**< width of a page cell in the document (not ransformed by scale and rotation) */
   double cell_height; /**< height of a page cell in the document (not ransformed by scale and rotation) */
+  unsigned int pages_per_row; /**< number of pages in a row */
+  unsigned int first_page_column; /**< column of the first page */
+  unsigned int page_padding; /**< padding between pages */
 
   /**
    * Document pages
@@ -424,6 +427,43 @@ zathura_document_get_cell_size(zathura_document_t* document,
 
 }
 
+void
+zathura_document_set_page_layout(zathura_document_t* document, unsigned int page_padding,
+                                 unsigned int pages_per_row, unsigned int first_page_column)
+{
+  g_return_if_fail(document != NULL);
+  document->page_padding = page_padding;
+  document->pages_per_row = pages_per_row;
+  document->first_page_column = first_page_column;
+}
+
+unsigned int
+zathura_document_get_page_padding(zathura_document_t* document)
+{
+  if (document == NULL) {
+    return 0;
+  }
+  return document->page_padding;
+}
+
+unsigned int
+zathura_document_get_pages_per_row(zathura_document_t* document)
+{
+  if (document == NULL) {
+    return 0;
+  }
+  return document->pages_per_row;
+}
+
+unsigned int
+zathura_document_get_first_page_column(zathura_document_t* document)
+{
+  if (document == NULL) {
+    return 0;
+  }
+  return document->first_page_column;
+}
+
 zathura_error_t
 zathura_document_save_as(zathura_document_t* document, const char* path)
 {
diff --git a/document.h b/document.h
index d803d34..3264abe 100644
--- a/document.h
+++ b/document.h
@@ -188,6 +188,41 @@ void zathura_document_set_data(zathura_document_t* document, void* data);
 void zathura_document_get_cell_size(zathura_document_t* document,
                                     unsigned int* height, unsigned int* width);
 
+/**
+ * Sets the layout of the pages in the document
+ *
+ * @param[in]  document          The document instance
+ * @param[in]  page_padding      pixels of padding between pages
+ * @param[in]  pages_per_row     number of pages per row
+ * @param[in]  first_page_column column of the first page (first column is 1)
+ */
+void zathura_document_set_page_layout(zathura_document_t* document, unsigned int page_padding,
+                                      unsigned int pages_per_row, unsigned int first_page_column);
+
+/**
+ * Returns the padding in pixels betwen pages
+ *
+ * @param document The document
+ * @return The padding in pixels between pages
+ */
+unsigned int zathura_document_get_page_padding(zathura_document_t* document);
+
+/**
+ * Returns the number of pages per row
+ *
+ * @param document The document
+ * @return The number of pages per row
+ */
+unsigned int zathura_document_get_pages_per_row(zathura_document_t* document);
+
+/**
+ * Returns the column for the first page (first column = 1)
+ *
+ * @param document The document
+ * @return The column for the first page
+ */
+unsigned int zathura_document_get_first_page_column(zathura_document_t* document);
+
 /**
  * Save the document
  *