[evince] libview: Make sure we don't return negative values when converting view points to doc points

[Carlos Garcia Campos <carlosgc src gnome org>]

commit df0015052c2773badfb58f7c6ab80d1bdee9f5b9
Author: Carlos Garcia Campos <carlosgc gnome org>
Date:   Sun Mar 2 14:01:32 2014 +0100

    libview: Make sure we don't return negative values when converting view points to doc points

 libview/ev-view.c |   12 ++++--------
 1 files changed, 4 insertions(+), 8 deletions(-)
---
diff --git a/libview/ev-view.c b/libview/ev-view.c
index be6d17b..0dacb6a 100644
--- a/libview/ev-view.c
+++ b/libview/ev-view.c
@@ -1289,8 +1289,8 @@ _ev_view_transform_view_point_to_doc_point (EvView       *view,
                                            double       *doc_point_x,
                                            double       *doc_point_y)
 {
-       *doc_point_x = (double) (view_point->x - page_area->x - border->left) / view->scale;
-       *doc_point_y = (double) (view_point->y - page_area->y - border->right) / view->scale;
+       *doc_point_x = MAX ((double) (view_point->x - page_area->x - border->left) / view->scale, 0);
+       *doc_point_y = MAX ((double) (view_point->y - page_area->y - border->right) / view->scale, 0);
 }
 
 void
@@ -1300,8 +1300,8 @@ _ev_view_transform_view_rect_to_doc_rect (EvView       *view,
                                          GtkBorder    *border,
                                          EvRectangle  *doc_rect)
 {
-       doc_rect->x1 = (double) (view_rect->x - page_area->x - border->left) / view->scale;
-       doc_rect->y1 = (double) (view_rect->y - page_area->y - border->right) / view->scale;
+       doc_rect->x1 = MAX ((double) (view_rect->x - page_area->x - border->left) / view->scale, 0);
+       doc_rect->y1 = MAX ((double) (view_rect->y - page_area->y - border->right) / view->scale, 0);
        doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
        doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 }
@@ -7957,8 +7957,6 @@ compute_new_selection (EvView          *view,
                                                                    &page_area, &border,
                                                                    &selection->rect.x1,
                                                                    &selection->rect.y1);
-                       selection->rect.x1 = MAX (selection->rect.x1, 0);
-                       selection->rect.y1 = MAX (selection->rect.y1, 0);
                }
 
                /* If the selection is contained within just one page,
@@ -7972,8 +7970,6 @@ compute_new_selection (EvView          *view,
                                                                    &page_area, &border,
                                                                    &selection->rect.x2,
                                                                    &selection->rect.y2);
-                       selection->rect.x2 = MAX (selection->rect.x2, 0);
-                       selection->rect.y2 = MAX (selection->rect.y2, 0);
                }
 
                list = g_list_prepend (list, selection);