Add support for scrolling left and right in the canvas window. Ctrl+LeftScroll zooms...

git-svn-id: http://svn.voria.com/code@554 1f10aa63-cdf2-0310-b900-c93c546f37ac

diff --git a/synfig-studio/trunk/src/gtkmm/workarea.cpp b/synfig-studio/trunk/src/gtkmm/workarea.cpp
index 6c4e252..bf9cebe 100644 (file)
--- a/synfig-studio/trunk/src/gtkmm/workarea.cpp
+++ b/synfig-studio/trunk/src/gtkmm/workarea.cpp
@@ -1689,11 +1689,13 @@ WorkArea::on_drawing_area_event(GdkEvent *event)
                        switch(event->scroll.direction)
                        {
                                case GDK_SCROLL_UP:
+                               case GDK_SCROLL_RIGHT:
                                        get_scrollx_adjustment()->set_value(scroll_point[0]+(mouse_pos[0]-scroll_point[0])*(1.25-(1+drift)));
                                        get_scrolly_adjustment()->set_value(scroll_point[1]-(mouse_pos[1]+scroll_point[1])*(1.25-(1+drift)));
                                        zoom_in();
                                        break;
                                case GDK_SCROLL_DOWN:
+                               case GDK_SCROLL_LEFT:
                                        get_scrollx_adjustment()->set_value(scroll_point[0]+(mouse_pos[0]-scroll_point[0])*(1/1.25-(1+drift)));
                                        get_scrolly_adjustment()->set_value(scroll_point[1]-(mouse_pos[1]+scroll_point[1])*(1/1.25-(1+drift)));
                                        zoom_out();
@@ -1719,6 +1721,12 @@ WorkArea::on_drawing_area_event(GdkEvent *event)
                                case GDK_SCROLL_DOWN:
                                        get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()+scroll_pixel*pw);
                                        break;
+                               case GDK_SCROLL_LEFT:
+                                       get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()+scroll_pixel*ph);
+                                       break;
+                               case GDK_SCROLL_RIGHT:
+                                       get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()-scroll_pixel*ph);
+                                       break;
                                default:
                                        break;
                        }
@@ -1740,6 +1748,12 @@ WorkArea::on_drawing_area_event(GdkEvent *event)
                                case GDK_SCROLL_DOWN:
                                        get_scrolly_adjustment()->set_value(get_scrolly_adjustment()->get_value()-scroll_pixel*ph);
                                        break;
+                               case GDK_SCROLL_LEFT:
+                                       get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()-scroll_pixel*pw);
+                                       break;
+                               case GDK_SCROLL_RIGHT:
+                                       get_scrollx_adjustment()->set_value(get_scrollx_adjustment()->get_value()+scroll_pixel*pw);
+                                       break;
                                default:
                                        break;
                        }