// Name: dnd.h
// Purpose: interface of wxDropSource and wx*DropTarget
// Author: wxWidgets team
-// RCS-ID: $Id$
-// Licence: wxWindows license
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
/**
- @class wxTextDropTarget
-
- A predefined drop target for dealing with text data.
-
- @library{wxcore}
- @category{dnd}
-
- @see @ref overview_dnd, wxDropSource, wxDropTarget, wxFileDropTarget
-*/
-class wxTextDropTarget : public wxDropTarget
+ Possible flags for drag and drop operations.
+ */
+enum
{
-public:
- /**
- Constructor.
- */
- wxTextDropTarget();
-
- /**
- See wxDropTarget::OnDrop(). This function is implemented appropriately
- for text, and calls OnDropText().
- */
- virtual bool OnDrop(long x, long y, const void data, size_t size);
-
- /**
- Override this function to receive dropped text.
-
- @param x
- The x coordinate of the mouse.
- @param y
- The y coordinate of the mouse.
- @param data
- The data being dropped: a wxString.
-
- Return @true to accept the data, or @false to veto the operation.
- */
- virtual bool OnDropText(wxCoord x, wxCoord y, const wxString& data);
+ wxDrag_CopyOnly = 0, ///< Allow only copying.
+ wxDrag_AllowMove = 1, ///< Allow moving too (copying is always allowed).
+ wxDrag_DefaultMove = 3 ///< Allow moving and make it default operation.
};
-
-
/**
Result returned from a wxDropSource::DoDragDrop() call.
*/
wxDragCancel ///< The operation was cancelled by user (not an error).
};
+
+
/**
@class wxDropTarget
associated with this drop target, calling its wxDataObject::SetData()
method.
*/
- virtual void GetData();
+ virtual bool GetData();
/**
Called after OnDrop() returns @true. By default this will usually
- GetData() and will return the suggested default value @a def.
+ GetData() and will return the suggested default value @a defResult.
*/
- virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def);
+ virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult defResult) = 0;
/**
Called when the mouse is being dragged over the drop target. By
- default, this calls functions return the suggested return value @a def.
+ default, this calls functions return the suggested return value @a defResult.
@param x
The x coordinate of the mouse.
@param y
The y coordinate of the mouse.
- @param def
+ @param defResult
Suggested value for return value. Determined by SHIFT or CONTROL
key states.
feedback from the side of the drop source, typically in form
of changing the icon.
*/
- virtual wxDragResult OnDragOver(wxCoord x, wxCoord y, wxDragResult def);
+ virtual wxDragResult OnDragOver(wxCoord x, wxCoord y, wxDragResult defResult);
/**
Called when the user drops a data object on the target. Return @false
The x coordinate of the mouse.
@param y
The y coordinate of the mouse.
- @param def
+ @param defResult
Suggested default for return value. Determined by SHIFT or CONTROL
key states.
feedback from the side of the drop source, typically in form
of changing the icon.
*/
- virtual wxDragResult OnEnter(wxCoord x, wxCoord y, wxDragResult def);
+ virtual wxDragResult OnEnter(wxCoord x, wxCoord y, wxDragResult defResult);
/**
Called when the mouse leaves the drop target.
*/
virtual void OnLeave();
+ /**
+ Returns the data wxDataObject associated with the drop target
+ */
+ wxDataObject *GetDataObject() const;
+
/**
Sets the data wxDataObject associated with the drop target and deletes
any previously associated data object.
*/
void SetDataObject(wxDataObject* data);
+
+
+ /**
+ Sets the default action for drag and drop. Use wxDragMove or
+ wxDragCopy to set deafult action to move or copy and use wxDragNone
+ (default) to set default action specified by initialization of draging
+ (see wxDropSource::DoDragDrop())
+ */
+ void SetDefaultAction(wxDragResult action);
+
+ /**
+ Returns default action for drag and drop or wxDragNone if this not
+ specified.
+ */
+ wxDragResult GetDefaultAction();
+
};
/**
This constructor requires that you must call SetData() later.
- Note that the exact type of @a iconCopy and subsequent parameters
- differs between wxMSW and wxGTK: these are cursors under Windows but
- icons for GTK. You should use the macro wxDROP_ICON() in portable
+ Note that the type of @a iconCopy and subsequent parameters
+ differs between different ports: these are cursors under Windows and OS
+ X but icons for GTK. You should use the macro wxDROP_ICON() in portable
programs instead of directly using either of these types.
+ @onlyfor{wxmsw,wxosx}
+
@param win
The window which initiates the drag and drop operation.
@param iconCopy
The icon or cursor used for feedback when operation can't be done.
*/
wxDropSource(wxWindow* win = NULL,
- const wxIconOrCursor& iconCopy = wxNullIconOrCursor,
- const wxIconOrCursor& iconMove = wxNullIconOrCursor,
- const wxIconOrCursor& iconNone = wxNullIconOrCursor);
+ const wxCursor& iconCopy = wxNullCursor,
+ const wxCursor& iconMove = wxNullCursor,
+ const wxCursor& iconNone = wxNullCursor);
+
/**
- Note that the exact type of @a iconCopy and subsequent parameters
- differs between wxMSW and wxGTK: these are cursors under Windows but
- icons for GTK. You should use the macro wxDROP_ICON() in portable
+ The constructor taking a wxDataObject.
+
+ Note that the type of @a iconCopy and subsequent parameters
+ differs between different ports: these are cursors under Windows and OS
+ X but icons for GTK. You should use the macro wxDROP_ICON() in portable
programs instead of directly using either of these types.
+ @onlyfor{wxmsw,wxosx}
+
+ @param data
+ The data associated with the drop source.
@param win
The window which initiates the drag and drop operation.
@param iconCopy
The icon or cursor used for feedback when operation can't be done.
*/
wxDropSource(wxDataObject& data, wxWindow* win = NULL,
- const wxIconOrCursor& iconCopy = wxNullIconOrCursor,
- const wxIconOrCursor& iconMove = wxNullIconOrCursor,
- const wxIconOrCursor& iconNone = wxNullIconOrCursor);
+ const wxCursor& iconCopy = wxNullCursor,
+ const wxCursor& iconMove = wxNullCursor,
+ const wxCursor& iconNone = wxNullCursor);
+
+ /**
+ This constructor requires that you must call SetData() later.
+
+ This is the wxGTK-specific version of the constructor taking wxIcon
+ instead of wxCursor as the other ports.
+
+ @onlyfor{wxgtk}
+
+ @param win
+ The window which initiates the drag and drop operation.
+ @param iconCopy
+ The icon or cursor used for feedback for copy operation.
+ @param iconMove
+ The icon or cursor used for feedback for move operation.
+ @param iconNone
+ The icon or cursor used for feedback when operation can't be done.
+ */
+ wxDropSource(wxWindow* win = NULL,
+ const wxIcon& iconCopy = wxNullIcon,
+ const wxIcon& iconMove = wxNullIcon,
+ const wxIcon& iconNone = wxNullIcon);
/**
- Default constructor.
+ The constructor taking a wxDataObject.
+
+ This is the wxGTK-specific version of the constructor taking wxIcon
+ instead of wxCursor as the other ports.
+
+ @onlyfor{wxgtk}
+
+ @param data
+ The data associated with the drop source.
+ @param win
+ The window which initiates the drag and drop operation.
+ @param iconCopy
+ The icon or cursor used for feedback for copy operation.
+ @param iconMove
+ The icon or cursor used for feedback for move operation.
+ @param iconNone
+ The icon or cursor used for feedback when operation can't be done.
*/
- virtual ~wxDropSource();
+ wxDropSource(wxDataObject& data, wxWindow* win = NULL,
+ const wxIcon& iconCopy = wxNullIcon,
+ const wxIcon& iconMove = wxNullIcon,
+ const wxIcon& iconNone = wxNullIcon);
/**
Starts the drag-and-drop operation which will terminate when the user
example.
@param flags
- If wxDrag_AllowMove is included in the flags, data may be moved and
- not only copied (default). If wxDrag_DefaultMove is specified
- (which includes the previous flag), this is even the default
- operation.
+ If ::wxDrag_AllowMove is included in the flags, data may be moved
+ and not only copied as is the case for the default
+ ::wxDrag_CopyOnly. If ::wxDrag_DefaultMove is specified
+ (which includes the previous flag), moving is not only possible but
+ becomes the default operation.
@return The operation requested by the user, may be ::wxDragCopy,
::wxDragMove, ::wxDragLink, ::wxDragCancel or ::wxDragNone if
@param effect
The effect to implement. One of ::wxDragCopy, ::wxDragMove,
::wxDragLink and ::wxDragNone.
- @param scrolling
- @true if the window is scrolling. MSW only.
@return @false if you want default feedback, or @true if you implement
your own feedback. The return value is ignored under GTK.
@param res
The drag result to set the icon for.
@param cursor
- The ion to show when this drag result occurs.
+ The icon to show when this drag result occurs.
+
+ @onlyfor{wxmsw,wxosx}
*/
void SetCursor(wxDragResult res, const wxCursor& cursor);
+ /**
+ Set the icon to use for a certain drag result.
+
+ @param res
+ The drag result to set the icon for.
+ @param icon
+ The icon to show when this drag result occurs.
+
+ @onlyfor{wxgtk}
+ */
+ void SetIcon(wxDragResult res, const wxIcon& icon);
+
/**
Sets the data wxDataObject associated with the drop source. This will
not delete any previously associated data.
+/**
+ @class wxTextDropTarget
+
+ A predefined drop target for dealing with text data.
+
+ @library{wxcore}
+ @category{dnd}
+
+ @see @ref overview_dnd, wxDropSource, wxDropTarget, wxFileDropTarget
+*/
+class wxTextDropTarget : public wxDropTarget
+{
+public:
+ /**
+ Constructor.
+ */
+ wxTextDropTarget();
+
+ /**
+ See wxDropTarget::OnDrop(). This function is implemented appropriately
+ for text, and calls OnDropText().
+ */
+ virtual bool OnDrop(wxCoord x, wxCoord y);
+
+ /**
+ Override this function to receive dropped text.
+
+ @param x
+ The x coordinate of the mouse.
+ @param y
+ The y coordinate of the mouse.
+ @param data
+ The data being dropped: a wxString.
+
+ Return @true to accept the data, or @false to veto the operation.
+ */
+ virtual bool OnDropText(wxCoord x, wxCoord y, const wxString& data) = 0;
+};
+
+
/**
@class wxFileDropTarget
See wxDropTarget::OnDrop(). This function is implemented appropriately
for files, and calls OnDropFiles().
*/
- virtual bool OnDrop(long x, long y, const void data, size_t size);
+ virtual bool OnDrop(wxCoord x, wxCoord y);
/**
Override this function to receive dropped files.
Return @true to accept the data, or @false to veto the operation.
*/
virtual bool OnDropFiles(wxCoord x, wxCoord y,
- const wxArrayString& filenames);
+ const wxArrayString& filenames) = 0;
};
// Global functions/macros
// ============================================================================
-/** @ingroup group_funcmacro_gdi */
+/** @addtogroup group_funcmacro_gdi */
//@{
/**
*/
#define wxDROP_ICON(name)
+/**
+ Returns true if res indicates that something was done during a DnD operation,
+ i.e. is neither error nor none nor cancel.
+*/
+bool wxIsDragResultOk(wxDragResult res);
+
//@}
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