wxWidgets/include/wx/generic/private/listctrl.h
Vadim Zeitlin 3d167c0022 Improve column auto-sizing code in generic wxListCtrl.
Take the width of the header itself into account when setting width to
wxLIST_AUTOSIZE.

Also refactor the code to reuse the code used in wxLIST_AUTOSIZE_USEHEADER
case in SetColumnWidth() when inserting or updating the column width to this
value.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70285 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2012-01-07 15:09:54 +00:00

827 lines
25 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: wx/generic/listctrl.h
// Purpose: private definitions of wxListCtrl helpers
// Author: Robert Roebling
// Vadim Zeitlin (virtual list control support)
// Id: $Id$
// Copyright: (c) 1998 Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_GENERIC_LISTCTRL_PRIVATE_H_
#define _WX_GENERIC_LISTCTRL_PRIVATE_H_
#include "wx/defs.h"
#if wxUSE_LISTCTRL
#include "wx/listctrl.h"
#include "wx/selstore.h"
#include "wx/timer.h"
#include "wx/settings.h"
// ============================================================================
// private classes
// ============================================================================
//-----------------------------------------------------------------------------
// wxColWidthInfo (internal)
//-----------------------------------------------------------------------------
struct wxColWidthInfo
{
int nMaxWidth;
bool bNeedsUpdate; // only set to true when an item whose
// width == nMaxWidth is removed
wxColWidthInfo(int w = 0, bool needsUpdate = false)
{
nMaxWidth = w;
bNeedsUpdate = needsUpdate;
}
};
WX_DEFINE_ARRAY_PTR(wxColWidthInfo *, ColWidthArray);
//-----------------------------------------------------------------------------
// wxListItemData (internal)
//-----------------------------------------------------------------------------
class wxListItemData
{
public:
wxListItemData(wxListMainWindow *owner);
~wxListItemData();
void SetItem( const wxListItem &info );
void SetImage( int image ) { m_image = image; }
void SetData( wxUIntPtr data ) { m_data = data; }
void SetPosition( int x, int y );
void SetSize( int width, int height );
bool HasText() const { return !m_text.empty(); }
const wxString& GetText() const { return m_text; }
void SetText(const wxString& text) { m_text = text; }
// we can't use empty string for measuring the string width/height, so
// always return something
wxString GetTextForMeasuring() const
{
wxString s = GetText();
if ( s.empty() )
s = wxT('H');
return s;
}
bool IsHit( int x, int y ) const;
int GetX() const;
int GetY() const;
int GetWidth() const;
int GetHeight() const;
int GetImage() const { return m_image; }
bool HasImage() const { return GetImage() != -1; }
void GetItem( wxListItem &info ) const;
void SetAttr(wxListItemAttr *attr) { m_attr = attr; }
wxListItemAttr *GetAttr() const { return m_attr; }
public:
// the item image or -1
int m_image;
// user data associated with the item
wxUIntPtr m_data;
// the item coordinates are not used in report mode; instead this pointer is
// NULL and the owner window is used to retrieve the item position and size
wxRect *m_rect;
// the list ctrl we are in
wxListMainWindow *m_owner;
// custom attributes or NULL
wxListItemAttr *m_attr;
protected:
// common part of all ctors
void Init();
wxString m_text;
};
//-----------------------------------------------------------------------------
// wxListHeaderData (internal)
//-----------------------------------------------------------------------------
class wxListHeaderData : public wxObject
{
public:
wxListHeaderData();
wxListHeaderData( const wxListItem &info );
void SetItem( const wxListItem &item );
void SetPosition( int x, int y );
void SetWidth( int w );
void SetState( int state );
void SetFormat( int format );
void SetHeight( int h );
bool HasImage() const;
bool HasText() const { return !m_text.empty(); }
const wxString& GetText() const { return m_text; }
void SetText(const wxString& text) { m_text = text; }
void GetItem( wxListItem &item );
bool IsHit( int x, int y ) const;
int GetImage() const;
int GetWidth() const;
int GetFormat() const;
int GetState() const;
protected:
long m_mask;
int m_image;
wxString m_text;
int m_format;
int m_width;
int m_xpos,
m_ypos;
int m_height;
int m_state;
private:
void Init();
};
//-----------------------------------------------------------------------------
// wxListLineData (internal)
//-----------------------------------------------------------------------------
WX_DECLARE_LIST(wxListItemData, wxListItemDataList);
class wxListLineData
{
public:
// the list of subitems: only may have more than one item in report mode
wxListItemDataList m_items;
// this is not used in report view
struct GeometryInfo
{
// total item rect
wxRect m_rectAll;
// label only
wxRect m_rectLabel;
// icon only
wxRect m_rectIcon;
// the part to be highlighted
wxRect m_rectHighlight;
// extend all our rects to be centered inside the one of given width
void ExtendWidth(wxCoord w)
{
wxASSERT_MSG( m_rectAll.width <= w,
wxT("width can only be increased") );
m_rectAll.width = w;
m_rectLabel.x = m_rectAll.x + (w - m_rectLabel.width) / 2;
m_rectIcon.x = m_rectAll.x + (w - m_rectIcon.width) / 2;
m_rectHighlight.x = m_rectAll.x + (w - m_rectHighlight.width) / 2;
}
}
*m_gi;
// is this item selected? [NB: not used in virtual mode]
bool m_highlighted;
// back pointer to the list ctrl
wxListMainWindow *m_owner;
public:
wxListLineData(wxListMainWindow *owner);
~wxListLineData()
{
WX_CLEAR_LIST(wxListItemDataList, m_items);
delete m_gi;
}
// called by the owner when it toggles report view
void SetReportView(bool inReportView)
{
// we only need m_gi when we're not in report view so update as needed
if ( inReportView )
{
delete m_gi;
m_gi = NULL;
}
else
{
m_gi = new GeometryInfo;
}
}
// are we in report mode?
inline bool InReportView() const;
// are we in virtual report mode?
inline bool IsVirtual() const;
// these 2 methods shouldn't be called for report view controls, in that
// case we determine our position/size ourselves
// calculate the size of the line
void CalculateSize( wxDC *dc, int spacing );
// remember the position this line appears at
void SetPosition( int x, int y, int spacing );
// wxListCtrl API
void SetImage( int image ) { SetImage(0, image); }
int GetImage() const { return GetImage(0); }
void SetImage( int index, int image );
int GetImage( int index ) const;
bool HasImage() const { return GetImage() != -1; }
bool HasText() const { return !GetText(0).empty(); }
void SetItem( int index, const wxListItem &info );
void GetItem( int index, wxListItem &info );
wxString GetText(int index) const;
void SetText( int index, const wxString& s );
wxListItemAttr *GetAttr() const;
void SetAttr(wxListItemAttr *attr);
// return true if the highlighting really changed
bool Highlight( bool on );
void ReverseHighlight();
bool IsHighlighted() const
{
wxASSERT_MSG( !IsVirtual(), wxT("unexpected call to IsHighlighted") );
return m_highlighted;
}
// draw the line on the given DC in icon/list mode
void Draw( wxDC *dc, bool current );
// the same in report mode: it needs more parameters as we don't store
// everything in the item in report mode
void DrawInReportMode( wxDC *dc,
const wxRect& rect,
const wxRect& rectHL,
bool highlighted,
bool current );
private:
// set the line to contain num items (only can be > 1 in report mode)
void InitItems( int num );
// get the mode (i.e. style) of the list control
inline int GetMode() const;
// Apply this item attributes to the given DC: set the text font and colour
// and also erase the background appropriately.
void ApplyAttributes(wxDC *dc,
const wxRect& rectHL,
bool highlighted,
bool current);
// draw the text on the DC with the correct justification; also add an
// ellipsis if the text is too large to fit in the current width
void DrawTextFormatted(wxDC *dc,
const wxString &text,
int col,
int x,
int yMid, // this is middle, not top, of the text
int width);
};
WX_DECLARE_OBJARRAY(wxListLineData, wxListLineDataArray);
//-----------------------------------------------------------------------------
// wxListHeaderWindow (internal)
//-----------------------------------------------------------------------------
class wxListHeaderWindow : public wxWindow
{
protected:
wxListMainWindow *m_owner;
const wxCursor *m_currentCursor;
wxCursor *m_resizeCursor;
bool m_isDragging;
// column being resized or -1
int m_column;
// divider line position in logical (unscrolled) coords
int m_currentX;
// minimal position beyond which the divider line
// can't be dragged in logical coords
int m_minX;
public:
wxListHeaderWindow();
wxListHeaderWindow( wxWindow *win,
wxWindowID id,
wxListMainWindow *owner,
const wxPoint &pos = wxDefaultPosition,
const wxSize &size = wxDefaultSize,
long style = 0,
const wxString &name = wxT("wxlistctrlcolumntitles") );
virtual ~wxListHeaderWindow();
void DrawCurrent();
void AdjustDC( wxDC& dc );
void OnPaint( wxPaintEvent &event );
void OnMouse( wxMouseEvent &event );
void OnSetFocus( wxFocusEvent &event );
// needs refresh
bool m_dirty;
// Update main window's column later
bool m_sendSetColumnWidth;
int m_colToSend;
int m_widthToSend;
virtual void OnInternalIdle();
private:
// common part of all ctors
void Init();
// generate and process the list event of the given type, return true if
// it wasn't vetoed, i.e. if we should proceed
bool SendListEvent(wxEventType type, const wxPoint& pos);
DECLARE_EVENT_TABLE()
};
//-----------------------------------------------------------------------------
// wxListRenameTimer (internal)
//-----------------------------------------------------------------------------
class wxListRenameTimer: public wxTimer
{
private:
wxListMainWindow *m_owner;
public:
wxListRenameTimer( wxListMainWindow *owner );
void Notify();
};
//-----------------------------------------------------------------------------
// wxListTextCtrlWrapper: wraps a wxTextCtrl to make it work for inline editing
//-----------------------------------------------------------------------------
class wxListTextCtrlWrapper : public wxEvtHandler
{
public:
// NB: text must be a valid object but not Create()d yet
wxListTextCtrlWrapper(wxListMainWindow *owner,
wxTextCtrl *text,
size_t itemEdit);
wxTextCtrl *GetText() const { return m_text; }
// Check if the given key event should stop editing and return true if it
// does or false otherwise.
bool CheckForEndEditKey(const wxKeyEvent& event);
// Different reasons for calling EndEdit():
//
// It was called because:
enum EndReason
{
End_Accept, // user has accepted the changes.
End_Discard, // user has cancelled editing.
End_Destroy // the entire control is being destroyed.
};
void EndEdit(EndReason reason);
protected:
void OnChar( wxKeyEvent &event );
void OnKeyUp( wxKeyEvent &event );
void OnKillFocus( wxFocusEvent &event );
bool AcceptChanges();
void Finish( bool setfocus );
private:
wxListMainWindow *m_owner;
wxTextCtrl *m_text;
wxString m_startValue;
size_t m_itemEdited;
bool m_aboutToFinish;
DECLARE_EVENT_TABLE()
};
//-----------------------------------------------------------------------------
// wxListMainWindow (internal)
//-----------------------------------------------------------------------------
WX_DECLARE_LIST(wxListHeaderData, wxListHeaderDataList);
class wxListMainWindow : public wxWindow
{
public:
wxListMainWindow();
wxListMainWindow( wxWindow *parent,
wxWindowID id,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
long style = 0,
const wxString &name = wxT("listctrlmainwindow") );
virtual ~wxListMainWindow();
// called by the main control when its mode changes
void SetReportView(bool inReportView);
// helper to simplify testing for wxLC_XXX flags
bool HasFlag(int flag) const { return m_parent->HasFlag(flag); }
// return true if this is a virtual list control
bool IsVirtual() const { return HasFlag(wxLC_VIRTUAL); }
// return true if the control is in report mode
bool InReportView() const { return HasFlag(wxLC_REPORT); }
// return true if we are in single selection mode, false if multi sel
bool IsSingleSel() const { return HasFlag(wxLC_SINGLE_SEL); }
// do we have a header window?
bool HasHeader() const
{ return InReportView() && !HasFlag(wxLC_NO_HEADER); }
void HighlightAll( bool on );
// all these functions only do something if the line is currently visible
// change the line "selected" state, return true if it really changed
bool HighlightLine( size_t line, bool highlight = true);
// as HighlightLine() but do it for the range of lines: this is incredibly
// more efficient for virtual list controls!
//
// NB: unlike HighlightLine() this one does refresh the lines on screen
void HighlightLines( size_t lineFrom, size_t lineTo, bool on = true );
// toggle the line state and refresh it
void ReverseHighlight( size_t line )
{ HighlightLine(line, !IsHighlighted(line)); RefreshLine(line); }
// return true if the line is highlighted
bool IsHighlighted(size_t line) const;
// refresh one or several lines at once
void RefreshLine( size_t line );
void RefreshLines( size_t lineFrom, size_t lineTo );
// refresh all selected items
void RefreshSelected();
// refresh all lines below the given one: the difference with
// RefreshLines() is that the index here might not be a valid one (happens
// when the last line is deleted)
void RefreshAfter( size_t lineFrom );
// the methods which are forwarded to wxListLineData itself in list/icon
// modes but are here because the lines don't store their positions in the
// report mode
// get the bound rect for the entire line
wxRect GetLineRect(size_t line) const;
// get the bound rect of the label
wxRect GetLineLabelRect(size_t line) const;
// get the bound rect of the items icon (only may be called if we do have
// an icon!)
wxRect GetLineIconRect(size_t line) const;
// get the rect to be highlighted when the item has focus
wxRect GetLineHighlightRect(size_t line) const;
// get the size of the total line rect
wxSize GetLineSize(size_t line) const
{ return GetLineRect(line).GetSize(); }
// return the hit code for the corresponding position (in this line)
long HitTestLine(size_t line, int x, int y) const;
// bring the selected item into view, scrolling to it if necessary
void MoveToItem(size_t item);
bool ScrollList( int WXUNUSED(dx), int dy );
// bring the current item into view
void MoveToFocus() { MoveToItem(m_current); }
// start editing the label of the given item
wxTextCtrl *EditLabel(long item,
wxClassInfo* textControlClass = wxCLASSINFO(wxTextCtrl));
wxTextCtrl *GetEditControl() const
{
return m_textctrlWrapper ? m_textctrlWrapper->GetText() : NULL;
}
void ResetTextControl(wxTextCtrl *text)
{
delete text;
m_textctrlWrapper = NULL;
}
void OnRenameTimer();
bool OnRenameAccept(size_t itemEdit, const wxString& value);
void OnRenameCancelled(size_t itemEdit);
void OnMouse( wxMouseEvent &event );
// called to switch the selection from the current item to newCurrent,
void OnArrowChar( size_t newCurrent, const wxKeyEvent& event );
void OnCharHook( wxKeyEvent &event );
void OnChar( wxKeyEvent &event );
void OnKeyDown( wxKeyEvent &event );
void OnKeyUp( wxKeyEvent &event );
void OnSetFocus( wxFocusEvent &event );
void OnKillFocus( wxFocusEvent &event );
void OnScroll( wxScrollWinEvent& event );
void OnPaint( wxPaintEvent &event );
void OnChildFocus(wxChildFocusEvent& event);
void DrawImage( int index, wxDC *dc, int x, int y );
void GetImageSize( int index, int &width, int &height ) const;
void SetImageList( wxImageList *imageList, int which );
void SetItemSpacing( int spacing, bool isSmall = false );
int GetItemSpacing( bool isSmall = false );
void SetColumn( int col, const wxListItem &item );
void SetColumnWidth( int col, int width );
void GetColumn( int col, wxListItem &item ) const;
int GetColumnWidth( int col ) const;
int GetColumnCount() const { return m_columns.GetCount(); }
// returns the sum of the heights of all columns
int GetHeaderWidth() const;
int GetCountPerPage() const;
void SetItem( wxListItem &item );
void GetItem( wxListItem &item ) const;
void SetItemState( long item, long state, long stateMask );
void SetItemStateAll( long state, long stateMask );
int GetItemState( long item, long stateMask ) const;
bool GetItemRect( long item, wxRect &rect ) const
{
return GetSubItemRect(item, wxLIST_GETSUBITEMRECT_WHOLEITEM, rect);
}
bool GetSubItemRect( long item, long subItem, wxRect& rect ) const;
wxRect GetViewRect() const;
bool GetItemPosition( long item, wxPoint& pos ) const;
int GetSelectedItemCount() const;
wxString GetItemText(long item, int col = 0) const
{
wxListItem info;
info.m_mask = wxLIST_MASK_TEXT;
info.m_itemId = item;
info.m_col = col;
GetItem( info );
return info.m_text;
}
void SetItemText(long item, const wxString& value)
{
wxListItem info;
info.m_mask = wxLIST_MASK_TEXT;
info.m_itemId = item;
info.m_text = value;
SetItem( info );
}
wxImageList* GetSmallImageList() const
{ return m_small_image_list; }
// set the scrollbars and update the positions of the items
void RecalculatePositions(bool noRefresh = false);
// refresh the window and the header
void RefreshAll();
long GetNextItem( long item, int geometry, int state ) const;
void DeleteItem( long index );
void DeleteAllItems();
void DeleteColumn( int col );
void DeleteEverything();
void EnsureVisible( long index );
long FindItem( long start, const wxString& str, bool partial = false );
long FindItem( long start, wxUIntPtr data);
long FindItem( const wxPoint& pt );
long HitTest( int x, int y, int &flags ) const;
void InsertItem( wxListItem &item );
void InsertColumn( long col, const wxListItem &item );
int GetItemWidthWithImage(wxListItem * item);
void SortItems( wxListCtrlCompare fn, wxIntPtr data );
size_t GetItemCount() const;
bool IsEmpty() const { return GetItemCount() == 0; }
void SetItemCount(long count);
// change the current (== focused) item, send a notification event
void ChangeCurrent(size_t current);
void ResetCurrent() { ChangeCurrent((size_t)-1); }
bool HasCurrent() const { return m_current != (size_t)-1; }
// send out a wxListEvent
void SendNotify( size_t line,
wxEventType command,
const wxPoint& point = wxDefaultPosition );
// override base class virtual to reset m_lineHeight when the font changes
virtual bool SetFont(const wxFont& font)
{
if ( !wxWindow::SetFont(font) )
return false;
m_lineHeight = 0;
return true;
}
// these are for wxListLineData usage only
// get the backpointer to the list ctrl
wxGenericListCtrl *GetListCtrl() const
{
return wxStaticCast(GetParent(), wxGenericListCtrl);
}
// get the height of all lines (assuming they all do have the same height)
wxCoord GetLineHeight() const;
// get the y position of the given line (only for report view)
wxCoord GetLineY(size_t line) const;
// get the brush to use for the item highlighting
wxBrush *GetHighlightBrush() const
{
return m_hasFocus ? m_highlightBrush : m_highlightUnfocusedBrush;
}
bool HasFocus() const
{
return m_hasFocus;
}
protected:
// the array of all line objects for a non virtual list control (for the
// virtual list control we only ever use m_lines[0])
wxListLineDataArray m_lines;
// the list of column objects
wxListHeaderDataList m_columns;
// currently focused item or -1
size_t m_current;
// the number of lines per page
int m_linesPerPage;
// this flag is set when something which should result in the window
// redrawing happens (i.e. an item was added or deleted, or its appearance
// changed) and OnPaint() doesn't redraw the window while it is set which
// allows to minimize the number of repaintings when a lot of items are
// being added. The real repainting occurs only after the next OnIdle()
// call
bool m_dirty;
wxColour *m_highlightColour;
wxImageList *m_small_image_list;
wxImageList *m_normal_image_list;
int m_small_spacing;
int m_normal_spacing;
bool m_hasFocus;
bool m_lastOnSame;
wxTimer *m_renameTimer;
bool m_isCreated;
int m_dragCount;
wxPoint m_dragStart;
ColWidthArray m_aColWidths;
// for double click logic
size_t m_lineLastClicked,
m_lineBeforeLastClicked,
m_lineSelectSingleOnUp;
protected:
wxWindow *GetMainWindowOfCompositeControl() { return GetParent(); }
// the total count of items in a virtual list control
size_t m_countVirt;
// the object maintaining the items selection state, only used in virtual
// controls
wxSelectionStore m_selStore;
// common part of all ctors
void Init();
// get the line data for the given index
wxListLineData *GetLine(size_t n) const
{
wxASSERT_MSG( n != (size_t)-1, wxT("invalid line index") );
if ( IsVirtual() )
{
wxConstCast(this, wxListMainWindow)->CacheLineData(n);
n = 0;
}
return &m_lines[n];
}
// get a dummy line which can be used for geometry calculations and such:
// you must use GetLine() if you want to really draw the line
wxListLineData *GetDummyLine() const;
// cache the line data of the n-th line in m_lines[0]
void CacheLineData(size_t line);
// get the range of visible lines
void GetVisibleLinesRange(size_t *from, size_t *to);
// force us to recalculate the range of visible lines
void ResetVisibleLinesRange() { m_lineFrom = (size_t)-1; }
// get the colour to be used for drawing the rules
wxColour GetRuleColour() const
{
return wxSystemSettings::GetColour(wxSYS_COLOUR_3DLIGHT);
}
private:
// initialize the current item if needed
void UpdateCurrent();
// delete all items but don't refresh: called from dtor
void DoDeleteAllItems();
// Compute the minimal width needed to fully display the column header.
int ComputeMinHeaderWidth(const wxListHeaderData* header) const;
// the height of one line using the current font
wxCoord m_lineHeight;
// the total header width or 0 if not calculated yet
wxCoord m_headerWidth;
// the first and last lines being shown on screen right now (inclusive),
// both may be -1 if they must be calculated so never access them directly:
// use GetVisibleLinesRange() above instead
size_t m_lineFrom,
m_lineTo;
// the brushes to use for item highlighting when we do/don't have focus
wxBrush *m_highlightBrush,
*m_highlightUnfocusedBrush;
// wrapper around the text control currently used for in place editing or
// NULL if no item is being edited
wxListTextCtrlWrapper *m_textctrlWrapper;
DECLARE_EVENT_TABLE()
friend class wxGenericListCtrl;
};
#endif // wxUSE_LISTCTRL
#endif // _WX_GENERIC_LISTCTRL_PRIVATE_H_