wxWidgets/include/wx/treebase.h
2000-12-03 18:25:13 +00:00

292 lines
13 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: treebase.h
// Purpose: wxTreeCtrl base classes and types
// Author: Julian Smart et al
// Modified by:
// Created: 01/02/97
// RCS-ID: $Id$
// Copyright: (c) 1997,1998 Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_TREEBASE_H_
#define _WX_TREEBASE_H_
#ifdef __GNUG__
#pragma interface "treebase.h"
#endif
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
// Not defined in setup.h so removing for now
// #if wxUSE_TREECTRL
#include "wx/control.h"
#include "wx/event.h"
// ----------------------------------------------------------------------------
// wxTreeItemId identifies an element of the tree. In this implementation, it's
// just a trivial wrapper around Win32 HTREEITEM. It's opaque for the
// application.
// ----------------------------------------------------------------------------
// Using this typedef removes an ambiguity when calling Remove()
typedef unsigned long wxTreeItemIdValue;
class WXDLLEXPORT wxTreeItemId
{
friend class WXDLLEXPORT wxTreeCtrl;
friend class WXDLLEXPORT wxGenericTreeCtrl;
friend class WXDLLEXPORT wxTreeEvent;
public:
// ctors
// 0 is invalid value for HTREEITEM
wxTreeItemId() { m_pItem = 0; }
// default copy ctor/assignment operator are ok for us
// accessors
// is this a valid tree item?
bool IsOk() const { return m_pItem != 0; }
// deprecated: only for compatibility
wxTreeItemId(long itemId) { m_pItem = itemId; }
//operator long() const { return m_pItem; }
operator wxTreeItemIdValue() const { return m_pItem; }
void operator=(long item) { m_pItem = item; }
wxTreeItemId(void *pItem) { m_pItem = (long) pItem; }
wxTreeItemIdValue m_pItem;
};
// ----------------------------------------------------------------------------
// wxTreeItemData is some (arbitrary) user class associated with some item. The
// main advantage of having this class (compared to old untyped interface) is
// that wxTreeItemData's are destroyed automatically by the tree and, as this
// class has virtual dtor, it means that the memory will be automatically
// freed. OTOH, we don't just use wxObject instead of wxTreeItemData because
// the size of this class is critical: in any real application, each tree leaf
// will have wxTreeItemData associated with it and number of leaves may be
// quite big.
//
// Because the objects of this class are deleted by the tree, they should
// always be allocated on the heap!
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxTreeItemData: public wxClientData
{
friend class WXDLLEXPORT wxTreeCtrl;
friend class WXDLLEXPORT wxGenericTreeCtrl;
public:
// creation/destruction
// --------------------
// default ctor
wxTreeItemData() { }
// default copy ctor/assignment operator are ok
// accessor: get the item associated with us
const wxTreeItemId& GetId() const { return m_pItem; }
void SetId(const wxTreeItemId& id) { m_pItem = id; }
protected:
wxTreeItemId m_pItem;
};
WX_DEFINE_EXPORTED_ARRAY(wxTreeItemId, wxArrayTreeItemIds);
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// enum for different images associated with a treectrl item
enum wxTreeItemIcon
{
wxTreeItemIcon_Normal, // not selected, not expanded
wxTreeItemIcon_Selected, // selected, not expanded
wxTreeItemIcon_Expanded, // not selected, expanded
wxTreeItemIcon_SelectedExpanded, // selected, expanded
wxTreeItemIcon_Max
};
// values for the `flags' parameter of wxTreeCtrl::HitTest() which determine
// where exactly the specified point is situated:
static const int wxTREE_HITTEST_ABOVE = 0x0001;
static const int wxTREE_HITTEST_BELOW = 0x0002;
static const int wxTREE_HITTEST_NOWHERE = 0x0004;
// on the button associated with an item.
static const int wxTREE_HITTEST_ONITEMBUTTON = 0x0008;
// on the bitmap associated with an item.
static const int wxTREE_HITTEST_ONITEMICON = 0x0010;
// on the indent associated with an item.
static const int wxTREE_HITTEST_ONITEMINDENT = 0x0020;
// on the label (string) associated with an item.
static const int wxTREE_HITTEST_ONITEMLABEL = 0x0040;
// on the right of the label associated with an item.
static const int wxTREE_HITTEST_ONITEMRIGHT = 0x0080;
// on the label (string) associated with an item.
static const int wxTREE_HITTEST_ONITEMSTATEICON = 0x0100;
// on the left of the wxTreeCtrl.
static const int wxTREE_HITTEST_TOLEFT = 0x0200;
// on the right of the wxTreeCtrl.
static const int wxTREE_HITTEST_TORIGHT = 0x0400;
// on the upper part (first half) of the item.
static const int wxTREE_HITTEST_ONITEMUPPERPART = 0x0800;
// on the lower part (second half) of the item.
static const int wxTREE_HITTEST_ONITEMLOWERPART = 0x1000;
// anywhere on the item
static const int wxTREE_HITTEST_ONITEM = wxTREE_HITTEST_ONITEMICON |
wxTREE_HITTEST_ONITEMLABEL;
// tree ctrl default name
WXDLLEXPORT_DATA(extern const char*) wxTreeCtrlNameStr;
// ----------------------------------------------------------------------------
// wxTreeItemAttr: a structure containing the visual attributes of an item
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxTreeItemAttr
{
public:
// ctors
wxTreeItemAttr() { }
wxTreeItemAttr(const wxColour& colText,
const wxColour& colBack,
const wxFont& font)
: m_colText(colText), m_colBack(colBack), m_font(font) { }
// setters
void SetTextColour(const wxColour& colText) { m_colText = colText; }
void SetBackgroundColour(const wxColour& colBack) { m_colBack = colBack; }
void SetFont(const wxFont& font) { m_font = font; }
// accessors
bool HasTextColour() const { return m_colText.Ok(); }
bool HasBackgroundColour() const { return m_colBack.Ok(); }
bool HasFont() const { return m_font.Ok(); }
const wxColour& GetTextColour() const { return m_colText; }
const wxColour& GetBackgroundColour() const { return m_colBack; }
const wxFont& GetFont() const { return m_font; }
private:
wxColour m_colText,
m_colBack;
wxFont m_font;
};
// ----------------------------------------------------------------------------
// wxTreeEvent is a special class for all events associated with tree controls
//
// NB: note that not all accessors make sense for all events, see the event
// descriptions below
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxTreeEvent : public wxNotifyEvent
{
friend class WXDLLEXPORT wxTreeCtrl;
friend class WXDLLEXPORT wxGenericTreeCtrl;
public:
wxTreeEvent(wxEventType commandType = wxEVT_NULL, int id = 0);
// accessors
// get the item on which the operation was performed or the newly
// selected item for wxEVT_COMMAND_TREE_SEL_CHANGED/ING events
wxTreeItemId GetItem() const { return m_item; }
// for wxEVT_COMMAND_TREE_SEL_CHANGED/ING events, get the previously
// selected item
wxTreeItemId GetOldItem() const { return m_itemOld; }
// the point where the mouse was when the drag operation started (for
// wxEVT_COMMAND_TREE_BEGIN_(R)DRAG events only) or click position
wxPoint GetPoint() const { return m_pointDrag; }
// keyboard code (for wxEVT_COMMAND_TREE_KEY_DOWN only)
int GetCode() const { return m_code; }
// label (for EVT_TREE_{BEGIN|END}_LABEL_EDIT only)
const wxString& GetLabel() const { return m_label; }
private:
// we could probably save some space by using union here
int m_code;
wxTreeItemId m_item,
m_itemOld;
wxPoint m_pointDrag;
wxString m_label;
DECLARE_DYNAMIC_CLASS(wxTreeEvent)
};
typedef void (wxEvtHandler::*wxTreeEventFunction)(wxTreeEvent&);
// ----------------------------------------------------------------------------
// macros for handling tree control events
// ----------------------------------------------------------------------------
// GetItem() returns the item being dragged, GetPoint() the mouse coords
//
// if you call event.Allow(), the drag operation will start and a
// EVT_TREE_END_DRAG event will be sent when the drag is over.
#define EVT_TREE_BEGIN_DRAG(id, fn) { wxEVT_COMMAND_TREE_BEGIN_DRAG, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
#define EVT_TREE_BEGIN_RDRAG(id, fn) { wxEVT_COMMAND_TREE_BEGIN_RDRAG, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
// GetItem() is the item on which the drop occured (if any) and GetPoint() the
// current mouse coords
#define EVT_TREE_END_DRAG(id, fn) { wxEVT_COMMAND_TREE_END_DRAG, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
// GetItem() returns the itme whose label is being edited, GetLabel() returns
// the current item label for BEGIN and the would be new one for END.
//
// Vetoing BEGIN event means that label editing won't happen at all,
// vetoing END means that the new value is discarded and the old one kept
#define EVT_TREE_BEGIN_LABEL_EDIT(id, fn) { wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
#define EVT_TREE_END_LABEL_EDIT(id, fn) { wxEVT_COMMAND_TREE_END_LABEL_EDIT, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
// provide/update information about GetItem() item
#define EVT_TREE_GET_INFO(id, fn) { wxEVT_COMMAND_TREE_GET_INFO, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
#define EVT_TREE_SET_INFO(id, fn) { wxEVT_COMMAND_TREE_SET_INFO, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
// GetItem() is the item being expanded/collapsed, the "ING" versions can use
#define EVT_TREE_ITEM_EXPANDED(id, fn) { wxEVT_COMMAND_TREE_ITEM_EXPANDED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
#define EVT_TREE_ITEM_EXPANDING(id, fn) { wxEVT_COMMAND_TREE_ITEM_EXPANDING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
#define EVT_TREE_ITEM_COLLAPSED(id, fn) { wxEVT_COMMAND_TREE_ITEM_COLLAPSED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
#define EVT_TREE_ITEM_COLLAPSING(id, fn) { wxEVT_COMMAND_TREE_ITEM_COLLAPSING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL },
// GetOldItem() is the item which had the selection previously, GetItem() is
// the item which acquires selection
#define EVT_TREE_SEL_CHANGED(id, fn) { wxEVT_COMMAND_TREE_SEL_CHANGED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL },
#define EVT_TREE_SEL_CHANGING(id, fn) { wxEVT_COMMAND_TREE_SEL_CHANGING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL },
// GetCode() returns the key code
// NB: this is the only message for which GetItem() is invalid (you may get the
// item from GetSelection())
#define EVT_TREE_KEY_DOWN(id, fn) { wxEVT_COMMAND_TREE_KEY_DOWN, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL },
// GetItem() returns the item being deleted, the associated data (if any) will
// be deleted just after the return of this event handler (if any)
#define EVT_TREE_DELETE_ITEM(id, fn) { wxEVT_COMMAND_TREE_DELETE_ITEM, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
// GetItem() returns the item that was activated (double click, enter, space)
#define EVT_TREE_ITEM_ACTIVATED(id, fn) { wxEVT_COMMAND_TREE_ITEM_ACTIVATED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL },
// GetItem() returns the item that was clicked on
#define EVT_TREE_ITEM_RIGHT_CLICK(id, fn) { wxEVT_COMMAND_TREE_ITEM_RIGHT_CLICK, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL },
#define EVT_TREE_ITEM_MIDDLE_CLICK(id, fn) { wxEVT_COMMAND_TREE_ITEM_MIDDLE_CLICK, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL },
// #endif // wxUSE_TREECTRL
#endif
// _WX_TREEBASE_H_