%{
bool wxGBPosition_helper(PyObject* source, wxGBPosition** obj)
{
+ if (source == Py_None) {
+ **obj = wxGBPosition(-1,-1);
+ return true;
+ }
return wxPyTwoIntItem_helper(source, obj, wxT("wxGBPosition"));
}
bool wxGBSpan_helper(PyObject* source, wxGBSpan** obj)
{
+ if (source == Py_None) {
+ **obj = wxGBSpan(-1,-1);
+ return true;
+ }
return wxPyTwoIntItem_helper(source, obj, wxT("wxGBSpan"));
}
//---------------------------------------------------------------------------
%newgroup;
+DocStr(wxGBPosition,
+"This class represents the position of an item in a virtual grid of
+rows and columns managed by a `wx.GridBagSizer`. wxPython has
+typemaps that will automatically convert from a 2-element sequence of
+integers to a wx.GBPosition, so you can use the more pythonic
+representation of the position nearly transparently in Python code.", "");
class wxGBPosition
{
public:
wxGBPosition(int row=0, int col=0);
-
+ ~wxGBPosition();
+
int GetRow() const;
int GetCol() const;
void SetRow(int row);
void SetCol(int col);
-
- bool operator==(const wxGBPosition& p) const;
- bool operator!=(const wxGBPosition& p) const;
+
+ %extend {
+ KeepGIL(__eq__);
+ DocStr(__eq__, "Compare GBPosition for equality.", "");
+ bool __eq__(PyObject* other) {
+ wxGBPosition temp, *obj = &temp;
+ if ( other == Py_None ) return false;
+ if ( ! wxGBPosition_helper(other, &obj) ) {
+ PyErr_Clear();
+ return false;
+ }
+ return self->operator==(*obj);
+ }
+
+
+ KeepGIL(__ne__);
+ DocStr(__ne__, "Compare GBPosition for inequality.", "");
+ bool __ne__(PyObject* other) {
+ wxGBPosition temp, *obj = &temp;
+ if ( other == Py_None ) return true;
+ if ( ! wxGBPosition_helper(other, &obj)) {
+ PyErr_Clear();
+ return true;
+ }
+ return self->operator!=(*obj);
+ }
+ }
+
+
%extend {
- PyObject* asTuple() {
- wxPyBeginBlockThreads();
+ void Set(int row=0, int col=0) {
+ self->SetRow(row);
+ self->SetCol(col);
+ }
+
+ PyObject* Get() {
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
PyObject* tup = PyTuple_New(2);
PyTuple_SET_ITEM(tup, 0, PyInt_FromLong(self->GetRow()));
PyTuple_SET_ITEM(tup, 1, PyInt_FromLong(self->GetCol()));
- wxPyEndBlockThreads();
+ wxPyEndBlockThreads(blocked);
return tup;
}
}
%pythoncode {
- def __str__(self): return str(self.asTuple())
- def __repr__(self): return 'wxGBPosition'+str(self.asTuple())
- def __len__(self): return len(self.asTuple())
- def __getitem__(self, index): return self.asTuple()[index]
+ asTuple = wx._deprecated(Get, "asTuple is deprecated, use `Get` instead")
+ def __str__(self): return str(self.Get())
+ def __repr__(self): return 'wx.GBPosition'+str(self.Get())
+ def __len__(self): return len(self.Get())
+ def __getitem__(self, index): return self.Get()[index]
def __setitem__(self, index, val):
if index == 0: self.SetRow(val)
elif index == 1: self.SetCol(val)
else: raise IndexError
- def __nonzero__(self): return self.asTuple() != (0,0)
- def __getinitargs__(self): return ()
- def __getstate__(self): return self.asTuple()
- def __setstate__(self, state): self.Set(*state)
+ def __nonzero__(self): return self.Get() != (0,0)
+ __safe_for_unpickling__ = True
+ def __reduce__(self): return (wx.GBPosition, self.Get())
}
%pythoncode {
+DocStr(wxGBSpan,
+"This class is used to hold the row and column spanning attributes of
+items in a `wx.GridBagSizer`. wxPython has typemaps that will
+automatically convert from a 2-element sequence of integers to a
+wx.GBSpan, so you can use the more pythonic representation of the span
+nearly transparently in Python code.
+", "");
+
class wxGBSpan
{
public:
- wxGBSpan(int rowspan=1, int colspan=1);
+ DocCtorStr(
+ wxGBSpan(int rowspan=1, int colspan=1),
+ "Construct a new wxGBSpan, optionally setting the rowspan and
+colspan. The default is (1,1). (Meaning that the item occupies one
+cell in each direction.", "");
+
+ ~wxGBSpan();
int GetRowspan() const;
int GetColspan() const;
void SetRowspan(int rowspan);
void SetColspan(int colspan);
+
- bool operator==(const wxGBSpan& o) const;
- bool operator!=(const wxGBSpan& o) const;
+ %extend {
+ KeepGIL(__eq__);
+ DocStr(__eq__, "Compare wxGBSpan for equality.", "");
+ bool __eq__(PyObject* other) {
+ wxGBSpan temp, *obj = &temp;
+ if ( other == Py_None ) return false;
+ if ( ! wxGBSpan_helper(other, &obj) ) {
+ PyErr_Clear();
+ return false;
+ }
+ return self->operator==(*obj);
+ }
+
+
+ KeepGIL(__ne__);
+ DocStr(__ne__, "Compare GBSpan for inequality.", "");
+ bool __ne__(PyObject* other) {
+ wxGBSpan temp, *obj = &temp;
+ if ( other == Py_None ) return true;
+ if ( ! wxGBSpan_helper(other, &obj)) {
+ PyErr_Clear();
+ return true;
+ }
+ return self->operator!=(*obj);
+ }
+ }
+
%extend {
- PyObject* asTuple() {
- wxPyBeginBlockThreads();
+ void Set(int rowspan=1, int colspan=1) {
+ self->SetRowspan(rowspan);
+ self->SetColspan(colspan);
+ }
+
+ PyObject* Get() {
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
PyObject* tup = PyTuple_New(2);
PyTuple_SET_ITEM(tup, 0, PyInt_FromLong(self->GetRowspan()));
PyTuple_SET_ITEM(tup, 1, PyInt_FromLong(self->GetColspan()));
- wxPyEndBlockThreads();
+ wxPyEndBlockThreads(blocked);
return tup;
}
}
%pythoncode {
- def __str__(self): return str(self.asTuple())
- def __repr__(self): return 'wxGBSpan'+str(self.asTuple())
- def __len__(self): return len(self.asTuple())
- def __getitem__(self, index): return self.asTuple()[index]
+ asTuple = wx._deprecated(Get, "asTuple is deprecated, use `Get` instead")
+ def __str__(self): return str(self.Get())
+ def __repr__(self): return 'wx.GBSpan'+str(self.Get())
+ def __len__(self): return len(self.Get())
+ def __getitem__(self, index): return self.Get()[index]
def __setitem__(self, index, val):
if index == 0: self.SetRowspan(val)
elif index == 1: self.SetColspan(val)
else: raise IndexError
- def __nonzero__(self): return self.asTuple() != (0,0)
- def __getinitargs__(self): return ()
- def __getstate__(self): return self.asTuple()
- def __setstate__(self, state): self.Set(*state)
+ def __nonzero__(self): return self.Get() != (0,0)
+ __safe_for_unpickling__ = True
+ def __reduce__(self): return (wx.GBSpan, self.Get())
}
%pythoncode {
//---------------------------------------------------------------------------
+DocStr(wxGBSizerItem,
+"The wx.GBSizerItem class is used to track the additional data about
+items in a `wx.GridBagSizer` such as the item's position in the grid
+and how many rows or columns it spans.
+", "");
class wxGBSizerItem : public wxSizerItem
{
public:
- wxGBSizerItem();
-
- %name(GBSizerItemWindow) wxGBSizerItem( wxWindow *window,
- const wxGBPosition& pos,
- const wxGBSpan& span,
- int flag,
- int border,
- wxObject* userData );
+ DocCtorStr(
+ wxGBSizerItem(),
+ "Constructs an empty wx.GBSizerItem. Either a window, sizer or spacer
+size will need to be set, as well as a position and span before this
+item can be used in a Sizer.
- %name(GBSizerItemSizer) wxGBSizerItem( wxSizer *sizer,
- const wxGBPosition& pos,
- const wxGBSpan& span,
- int flag,
- int border,
- wxObject* userData );
+You will probably never need to create a wx.GBSizerItem directly as they
+are created automatically when the sizer's Add method is called.", "");
- %name(GBSizerItemSpacer) wxGBSizerItem( int width,
- int height,
- const wxGBPosition& pos,
- const wxGBSpan& span,
- int flag,
- int border,
- wxObject* userData);
+ ~wxGBSizerItem();
+
+ %extend {
+ DocStr(wxGBSizerItem( wxWindow *window, const wxGBPosition& pos,const wxGBSpan& span,int flag,int border,PyObject* userData=NULL ),
+ "Construct a `wx.GBSizerItem` for a window.", "");
+
+ %RenameCtor(GBSizerItemWindow, wxGBSizerItem( wxWindow *window,
+ const wxGBPosition& pos,
+ const wxGBSpan& span,
+ int flag,
+ int border,
+ PyObject* userData=NULL ))
+ {
+ wxPyUserData* data = NULL;
+ if ( userData ) {
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ data = new wxPyUserData(userData);
+ wxPyEndBlockThreads(blocked);
+ }
+ return new wxGBSizerItem(window, pos, span, flag, border, data);
+ }
+
+
+ DocStr(wxGBSizerItem( wxSizer *sizer,const wxGBPosition& pos,const wxGBSpan& span,int flag,int border,PyObject* userData=NULL ),
+ "Construct a `wx.GBSizerItem` for a sizer", "");
+ %disownarg( wxSizer *sizer );
+ %RenameCtor(GBSizerItemSizer, wxGBSizerItem( wxSizer *sizer,
+ const wxGBPosition& pos,
+ const wxGBSpan& span,
+ int flag,
+ int border,
+ PyObject* userData=NULL ))
+ {
+ wxPyUserData* data = NULL;
+ if ( userData ) {
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ data = new wxPyUserData(userData);
+ wxPyEndBlockThreads(blocked);
+ }
+ return new wxGBSizerItem(sizer, pos, span, flag, border, data);
+ }
+ %cleardisown( wxSizer *sizer );
+
+
+ DocStr(wxGBSizerItem( int width,int height,const wxGBPosition& pos,const wxGBSpan& span,int flag,int border,PyObject* userData=NULL),
+ "Construct a `wx.GBSizerItem` for a spacer.", "");
+ %RenameCtor(GBSizerItemSpacer, wxGBSizerItem( int width,
+ int height,
+ const wxGBPosition& pos,
+ const wxGBSpan& span,
+ int flag,
+ int border,
+ PyObject* userData=NULL))
+ {
+ wxPyUserData* data = NULL;
+ if ( userData ) {
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ data = new wxPyUserData(userData);
+ wxPyEndBlockThreads(blocked);
+ }
+ return new wxGBSizerItem(width, height, pos, span, flag, border, data);
+ }
+ }
- // Get the grid position of the item
- wxGBPosition GetPos() const;
- %pythoncode { def GetPosTuple(self): return self.GetPos().asTuple() }
-
- // Get the row and column spanning of the item
- wxGBSpan GetSpan() const;
- %pythoncode { def GetSpanTuple(self): return self.GetSpan().asTuple() }
+
+ DocDeclStr(
+ wxGBPosition , GetPos() const,
+ "Get the grid position of the item", "");
+
+ %pythoncode { def GetPosTuple(self): return self.GetPos().Get() }
- // If the item is already a member of a sizer then first ensure that there
- // is no other item that would intersect with this one at the new
- // position, then set the new position. Returns true if the change is
- // successful and after the next Layout the item will be moved.
- bool SetPos( const wxGBPosition& pos );
+
+
+ DocDeclStr(
+ wxGBSpan , GetSpan() const,
+ "Get the row and column spanning of the item", "");
+
+ %pythoncode { def GetSpanTuple(self): return self.GetSpan().Get() }
- // If the item is already a member of a sizer then first ensure that there
- // is no other item that would intersect with this one with its new
- // spanning size, then set the new spanning. Returns true if the change
- // is successful and after the next Layout the item will be resized.
- bool SetSpan( const wxGBSpan& span );
+
+
+ DocDeclStr(
+ bool , SetPos( const wxGBPosition& pos ),
+ "If the item is already a member of a sizer then first ensure that
+there is no other item that would intersect with this one at the new
+position, then set the new position. Returns True if the change is
+successful and after the next Layout() the item will be moved.", "");
+
- %nokwargs Intersects;
+ DocDeclStr(
+ bool , SetSpan( const wxGBSpan& span ),
+ "If the item is already a member of a sizer then first ensure that
+there is no other item that would intersect with this one with its new
+spanning size, then set the new spanning. Returns True if the change
+is successful and after the next Layout() the item will be resized.
+", "");
- // Returns true if this item and the other item instersect
- bool Intersects(const wxGBSizerItem& other);
- // Returns true if the given pos/span would intersect with this item.
- bool Intersects(const wxGBPosition& pos, const wxGBSpan& span);
+
+ DocDeclStr(
+ bool , Intersects(const wxGBSizerItem& other),
+ "Returns True if this item and the other item instersect.", "");
+
- // Get the row and column of the endpoint of this item
- void GetEndPos(int& row, int& col);
+ DocDeclStrName(
+ bool , Intersects(const wxGBPosition& pos, const wxGBSpan& span),
+ "Returns True if the given pos/span would intersect with this item.", "",
+ IntersectsPos);
+
+ %extend {
+ DocStr(GetEndPos,
+ "Get the row and column of the endpoint of this item.", "");
+ wxGBPosition GetEndPos() {
+ int row, col;
+ self->GetEndPos(row, col);
+ return wxGBPosition(row, col);
+ }
+ }
+
- wxGridBagSizer* GetGBSizer() const;
- void SetGBSizer(wxGridBagSizer* sizer);
+ DocDeclStr(
+ wxGridBagSizer* , GetGBSizer() const,
+ "Get the sizer this item is a member of.", "");
+ DocDeclStr(
+ void , SetGBSizer(wxGridBagSizer* sizer),
+ "Set the sizer this item is a member of.", "");
+
+ %property(EndPos, GetEndPos, doc="See `GetEndPos`");
+ %property(GBSizer, GetGBSizer, SetGBSizer, doc="See `GetGBSizer` and `SetGBSizer`");
+ %property(Pos, GetPos, SetPos, doc="See `GetPos` and `SetPos`");
+ %property(Span, GetSpan, SetSpan, doc="See `GetSpan` and `SetSpan`");
};
//---------------------------------------------------------------------------
+DocStr(wxGridBagSizer,
+"A `wx.Sizer` that can lay out items in a virtual grid like a
+`wx.FlexGridSizer` but in this case explicit positioning of the items
+is allowed using `wx.GBPosition`, and items can optionally span more
+than one row and/or column using `wx.GBSpan`. The total size of the
+virtual grid is determined by the largest row and column that items are
+positioned at, adjusted for spanning.
+", "");
class wxGridBagSizer : public wxFlexGridSizer
{
public:
- wxGridBagSizer(int vgap = 0, int hgap = 0 );
+ %pythonAppend wxGridBagSizer "self._setOORInfo(self)"
+
+ DocCtorStr(
+ wxGridBagSizer(int vgap = 0, int hgap = 0 ),
+ "Constructor, with optional parameters to specify the gap between the
+rows and columns.", "");
- // The Add method returns true if the item was successfully placed at the
- // given cell position, false if something was already there.
+
%extend {
- bool Add( PyObject* item,
- const wxGBPosition& pos,
- const wxGBSpan& span = wxDefaultSpan,
- int flag = 0,
- int border = 0,
- PyObject* userData = NULL ) {
+ DocAStr(Add,
+ "Add(self, item, GBPosition pos, GBSpan span=DefaultSpan, int flag=0,
+int border=0, userData=None) -> wx.GBSizerItem",
+
+ "Adds an item to the sizer at the grid cell *pos*, optionally spanning
+more than one row or column as specified with *span*. The remaining
+args behave similarly to `wx.Sizer.Add`.
+
+Returns True if the item was successfully placed at the given cell
+position, False if something was already there.
+", "");
+ wxGBSizerItem* Add( PyObject* item,
+ const wxGBPosition& pos,
+ const wxGBSpan& span = wxDefaultSpan,
+ int flag = 0,
+ int border = 0,
+ PyObject* userData = NULL ) {
wxPyUserData* data = NULL;
- wxPyBeginBlockThreads();
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
wxPySizerItemInfo info = wxPySizerItemTypeHelper(item, true, false);
if ( userData && (info.window || info.sizer || info.gotSize) )
data = new wxPyUserData(userData);
- wxPyEndBlockThreads();
+ if ( info.sizer )
+ PyObject_SetAttrString(item,"thisown",Py_False);
+ wxPyEndBlockThreads(blocked);
// Now call the real Add method if a valid item type was found
if ( info.window )
- return self->Add(info.window, pos, span, flag, border, data);
+ return (wxGBSizerItem*)self->Add(info.window, pos, span, flag, border, data);
else if ( info.sizer )
- return self->Add(info.sizer, pos, span, flag, border, data);
+ return (wxGBSizerItem*)self->Add(info.sizer, pos, span, flag, border, data);
else if (info.gotSize)
- return self->Add(info.size.GetWidth(), info.size.GetHeight(),
- pos, span, flag, border, data);
- return false;
+ return (wxGBSizerItem*)self->Add(info.size.GetWidth(), info.size.GetHeight(),
+ pos, span, flag, border, data);
+ return NULL;
}
}
-
- %name(AddItem) bool Add( wxGBSizerItem *item );
+ %disownarg( wxGBSizerItem *item );
+ DocDeclAStrName(
+ wxGBSizerItem* , Add( wxGBSizerItem *item ),
+ "Add(self, GBSizerItem item) -> wx.GBSizerItem",
+ "Add an item to the sizer using a `wx.GBSizerItem`. Returns True if
+the item was successfully placed at its given cell position, False if
+something was already there.", "",
+ AddItem);
+ %cleardisown( wxGBSizerItem *item );
+
+ DocDeclStr(
+ wxSize , GetCellSize(int row, int col) const,
+ "Get the size of the specified cell, including hgap and
+vgap. Only valid after a Layout.", "");
+
+ DocDeclStr(
+ wxSize , GetEmptyCellSize() const,
+ "Get the size used for cells in the grid with no item.", "");
+
+ DocDeclStr(
+ void , SetEmptyCellSize(const wxSize& sz),
+ "Set the size used for cells in the grid with no item.", "");
+
- // Get/Set the size used for cells in the grid with no item.
- wxSize GetEmptyCellSize() const;
- void SetEmptyCellSize(const wxSize& sz);
-
- // Get the grid position of the specified item
+
%nokwargs GetItemPosition;
+ %noautodoc GetItemPosition;
+ DocStr(GetItemPosition,
+ "GetItemPosition(self, item) -> GBPosition
+
+Get the grid position of the specified *item* where *item* is either a
+window or subsizer that is a member of this sizer, or a zero-based
+index of an item.", "");
wxGBPosition GetItemPosition(wxWindow *window);
wxGBPosition GetItemPosition(wxSizer *sizer);
wxGBPosition GetItemPosition(size_t index);
- // Set the grid position of the specified item. Returns true on success.
- // If the move is not allowed (because an item is already there) then
- // false is returned.
+
%nokwargs SetItemPosition;
+ %noautodoc SetItemPosition;
+ DocStr(SetItemPosition,
+ "SetItemPosition(self, item, GBPosition pos) -> bool
+
+Set the grid position of the specified *item* where *item* is either a
+window or subsizer that is a member of this sizer, or a zero-based
+index of an item. Returns True on success. If the move is not
+allowed (because an item is already there) then False is returned.
+", "");
bool SetItemPosition(wxWindow *window, const wxGBPosition& pos);
bool SetItemPosition(wxSizer *sizer, const wxGBPosition& pos);
bool SetItemPosition(size_t index, const wxGBPosition& pos);
- // Get the row/col spanning of the specified item
+
+
%nokwargs GetItemSpan;
+ %noautodoc GetItemSpan;
+ DocStr(GetItemSpan,
+ "GetItemSpan(self, item) -> GBSpan
+
+Get the row/col spanning of the specified *item* where *item* is
+either a window or subsizer that is a member of this sizer, or a
+zero-based index of an item.", "");
wxGBSpan GetItemSpan(wxWindow *window);
wxGBSpan GetItemSpan(wxSizer *sizer);
wxGBSpan GetItemSpan(size_t index);
- // Set the row/col spanning of the specified item. Returns true on
- // success. If the move is not allowed (because an item is already there)
- // then false is returned.
+
+
%nokwargs SetItemSpan;
+ %noautodoc SetItemSpan;
+ DocStr(SetItemSpan,
+ "SetItemSpan(self, item, GBSpan span) -> bool
+
+Set the row/col spanning of the specified *item* where *item* is
+either a window or subsizer that is a member of this sizer, or a
+zero-based index of an item. Returns True on success. If the move is
+not allowed (because an item is already there) then False is returned.", "");
bool SetItemSpan(wxWindow *window, const wxGBSpan& span);
bool SetItemSpan(wxSizer *sizer, const wxGBSpan& span);
bool SetItemSpan(size_t index, const wxGBSpan& span);
+
- // Find the sizer item for the given window or subsizer, returns NULL if
- // not found. (non-recursive)
%nokwargs FindItem;
+ %noautodoc FindItem;
+ DocStr(FindItem,
+ "FindItem(self, item) -> GBSizerItem
+
+Find the sizer item for the given window or subsizer, returns None if
+not found. (non-recursive)", "");
wxGBSizerItem* FindItem(wxWindow* window);
wxGBSizerItem* FindItem(wxSizer* sizer);
- // Return the sizer item for the given grid cell, or NULL if there is no
- // item at that position. (non-recursive)
- wxGBSizerItem* FindItemAtPosition(const wxGBPosition& pos);
-
+ DocDeclStr(
+ wxGBSizerItem* , FindItemAtPosition(const wxGBPosition& pos),
+ "Return the sizer item for the given grid cell, or None if there is no
+item at that position. (non-recursive)", "");
- // Return the sizer item that has a matching user data (it only compares
- // pointer values) or NULL if not found. (non-recursive)
- wxGBSizerItem* FindItemWithData(const wxObject* userData);
- // These are what make the sizer do size calculations and layout
- virtual void RecalcSizes();
- virtual wxSize CalcMin();
+ DocDeclStr(
+ wxGBSizerItem* , FindItemAtPoint(const wxPoint& pt),
+ "Return the sizer item located at the point given in *pt*, or None if
+there is no item at that point. The (x,y) coordinates in pt correspond
+to the client coordinates of the window using the sizer for
+layout. (non-recursive)", "");
+
+
+// DocDeclStr(
+// wxGBSizerItem* , FindItemWithData(const wxObject* userData),
+// "Return the sizer item that has a matching user data (it only compares
+// pointer values) or None if not found. (non-recursive)", "");
+
+
// Look at all items and see if any intersect (or would overlap) the given
- // item. Returns true if so, false if there would be no overlap. If an
+ // item. Returns True if so, False if there would be no overlap. If an
// excludeItem is given then it will not be checked for intersection, for
// example it may be the item we are checking the position of.
- %nokwargs CheckForIntersection;
- bool CheckForIntersection(wxGBSizerItem* item, wxGBSizerItem* excludeItem = NULL);
- bool CheckForIntersection(const wxGBPosition& pos, const wxGBSpan& span, wxGBSizerItem* excludeItem = NULL);
+
+ DocDeclStr(
+ bool , CheckForIntersection(wxGBSizerItem* item, wxGBSizerItem* excludeItem = NULL),
+ "Look at all items and see if any intersect (or would overlap) the
+given *item*. Returns True if so, False if there would be no overlap.
+If an *excludeItem* is given then it will not be checked for
+intersection, for example it may be the item we are checking the
+position of.
+", "");
+
+ DocDeclStrName(
+ bool , CheckForIntersection(const wxGBPosition& pos, const wxGBSpan& span, wxGBSizerItem* excludeItem = NULL),
+ "Look at all items and see if any intersect (or would overlap) the
+given position and span. Returns True if so, False if there would be
+no overlap. If an *excludeItem* is given then it will not be checked
+for intersection, for example it may be the item we are checking the
+position of.", "",
+ CheckForIntersectionPos);
+
};
projects / wxWidgets.git / blobdiff