Use GtkGrid instead of GtkTable

config.c

@@ -53,8 +53,13 @@ cb_page_padding_changed(girara_session_t* session, const char* UNUSED(name),
 
   int val = *(int*) value;
   if (GTK_IS_TABLE(zathura->ui.page_widget) == TRUE) {
+#if (GTK_MAJOR_VERSION == 3)
+    gtk_grid_set_row_spacing(GTK_GRID(zathura->ui.page_widget), val);
+    gtk_grid_set_column_spacing(GTK_GRID(zathura->ui.page_widget), val);
+#else
     gtk_table_set_row_spacings(GTK_TABLE(zathura->ui.page_widget), val);
     gtk_table_set_col_spacings(GTK_TABLE(zathura->ui.page_widget), val);
+#endif
   }
 }
 

shortcuts.c

@@ -343,7 +343,7 @@ sc_mouse_scroll(girara_session_t* session, girara_argument_t* argument, girara_e
       break;
     case GIRARA_EVENT_MOTION_NOTIFY:
       x_adj = gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(session->gtk.view));
-      y_adj =gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(session->gtk.view));
+      y_adj = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(session->gtk.view));
 
       if (x_adj == NULL || y_adj == NULL) {
         return false;
@@ -543,7 +543,6 @@ sc_scroll(girara_session_t* session, girara_argument_t* argument,
     adjustment = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(session->gtk.view));
   }
 
-
   gdouble view_size                  = gtk_adjustment_get_page_size(adjustment);
   gdouble value                      = gtk_adjustment_get_value(adjustment);
   gdouble max                        = gtk_adjustment_get_upper(adjustment) - view_size;

zathura.c

@@ -227,7 +227,11 @@ zathura_init(int argc, char* argv[])
   zathura->ui.session->events.unknown_command = cb_unknown_command;
 
   /* page view */
+#if (GTK_MAJOR_VERSION == 3)
+  zathura->ui.page_widget = gtk_grid_new();
+#else
   zathura->ui.page_widget = gtk_table_new(0, 0, TRUE);
+#endif
   if (zathura->ui.page_widget == NULL) {
     goto error_free;
   }
@@ -274,8 +278,13 @@ zathura_init(int argc, char* argv[])
   int page_padding = 1;
   girara_setting_get(zathura->ui.session, "page-padding", &page_padding);
 
+#if (GTK_MAJOR_VERSION == 3)
+  gtk_grid_set_row_spacing(GTK_GRID(zathura->ui.page_widget), page_padding);
+  gtk_grid_set_column_spacing(GTK_GRID(zathura->ui.page_widget), page_padding);
+#else
   gtk_table_set_row_spacings(GTK_TABLE(zathura->ui.page_widget), page_padding);
   gtk_table_set_col_spacings(GTK_TABLE(zathura->ui.page_widget), page_padding);
+#endif
 
   /* database */
   char* database = NULL;
@@ -937,15 +946,22 @@ page_widget_set_mode(zathura_t* zathura, unsigned int pages_per_row, unsigned in
   gtk_container_foreach(GTK_CONTAINER(zathura->ui.page_widget), remove_page_from_table, (gpointer)0);
 
   unsigned int number_of_pages     = zathura_document_get_number_of_pages(zathura->document);
+#if (GTK_MAJOR_VERSION == 3)
+#else
   gtk_table_resize(GTK_TABLE(zathura->ui.page_widget), ceil((number_of_pages + first_page_column - 1) / pages_per_row), pages_per_row);
-  for (unsigned int i = 0; i < number_of_pages; i++)
-  {
+#endif
+
+  for (unsigned int i = 0; i < number_of_pages; i++) {
     int x = (i + first_page_column - 1) % pages_per_row;
     int y = (i + first_page_column - 1) / pages_per_row;
 
     zathura_page_t* page   = zathura_document_get_page(zathura->document, i);
     GtkWidget* page_widget = zathura_page_get_widget(zathura, page);
+#if (GTK_MAJOR_VERSION == 3)
+    gtk_grid_attach(GTK_GRID(zathura->ui.page_widget), page_widget, x, y, 1, 1);
+#else
     gtk_table_attach(GTK_TABLE(zathura->ui.page_widget), page_widget, x, x + 1, y, y + 1, GTK_SHRINK, GTK_SHRINK, 0, 0);
+#endif
   }
 
   gtk_widget_show_all(zathura->ui.page_widget);