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treectlg.cpp
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2002-09-05
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/////////////////////////////////////////////////////////////////////////////
// Name: treectlg.cpp
// Purpose: generic tree control implementation
// Author: Robert Roebling
// Created: 01/02/97
// Modified: 22/10/98 - almost total rewrite, simpler interface (VZ)
// Id: $Id: treectlg.cpp,v 1.85 2002/09/05 19:50:41 JS Exp $
// Copyright: (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// =============================================================================
// declarations
// =============================================================================
// -----------------------------------------------------------------------------
// headers
// -----------------------------------------------------------------------------
#ifdef __GNUG__
#pragma implementation "treectlg.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#if wxUSE_TREECTRL
#include "wx/treebase.h"
#include "wx/generic/treectlg.h"
#include "wx/timer.h"
#include "wx/textctrl.h"
#include "wx/imaglist.h"
#include "wx/settings.h"
#include "wx/dcclient.h"
// -----------------------------------------------------------------------------
// array types
// -----------------------------------------------------------------------------
class WXDLLEXPORT wxGenericTreeItem;
WX_DEFINE_EXPORTED_ARRAY(wxGenericTreeItem *, wxArrayGenericTreeItems);
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
static const int NO_IMAGE = -1;
static const int PIXELS_PER_UNIT = 10;
// ----------------------------------------------------------------------------
// Aqua arrows
// ----------------------------------------------------------------------------
/* XPM */
static const char *aqua_arrow_right[] = {
/* columns rows colors chars-per-pixel */
"13 11 4 1",
" c None",
"b c #C0C0C0",
"c c #707070",
"d c #A0A0A0",
/* pixels */
" b ",
" ddb ",
" cccdb ",
" cccccd ",
" ccccccdb ",
" ccccccccd",
" ccccccdb ",
" cccccb ",
" cccdb ",
" ddb ",
" b "
};
/* XPM */
static const char *aqua_arrow_down[] = {
/* columns rows colors chars-per-pixel */
"13 11 4 1",
" c None",
"b c #C0C0C0",
"c c #707070",
"d c #A0A0A0",
/* pixels */
" ",
" ",
" bdcccccccdb ",
" dcccccccd ",
" bcccccccb ",
" dcccccd ",
" bcccccb ",
" bcccd ",
" dcd ",
" bcb ",
" d "
};
// -----------------------------------------------------------------------------
// private classes
// -----------------------------------------------------------------------------
// timer used for enabling in-place edit
class WXDLLEXPORT wxTreeRenameTimer: public wxTimer
{
public:
// start editing the current item after half a second (if the mouse hasn't
// been clicked/moved)
enum { DELAY = 500 };
wxTreeRenameTimer( wxGenericTreeCtrl *owner );
virtual void Notify();
private:
wxGenericTreeCtrl *m_owner;
};
// control used for in-place edit
class WXDLLEXPORT wxTreeTextCtrl: public wxTextCtrl
{
public:
wxTreeTextCtrl(wxGenericTreeCtrl *owner, wxGenericTreeItem *item);
protected:
void OnChar( wxKeyEvent &event );
void OnKeyUp( wxKeyEvent &event );
void OnKillFocus( wxFocusEvent &event );
bool AcceptChanges();
void Finish();
private:
wxGenericTreeCtrl *m_owner;
wxGenericTreeItem *m_itemEdited;
wxString m_startValue;
bool m_finished;
DECLARE_EVENT_TABLE()
};
// timer used to clear wxGenericTreeCtrl::m_findPrefix if no key was pressed
// for a sufficiently long time
class WXDLLEXPORT wxTreeFindTimer : public wxTimer
{
public:
// reset the current prefix after half a second of inactivity
enum { DELAY = 500 };
wxTreeFindTimer( wxGenericTreeCtrl *owner ) { m_owner = owner; }
virtual void Notify() { m_owner->m_findPrefix.clear(); }
private:
wxGenericTreeCtrl *m_owner;
};
// a tree item
class WXDLLEXPORT wxGenericTreeItem
{
public:
// ctors & dtor
wxGenericTreeItem() { m_data = NULL; }
wxGenericTreeItem( wxGenericTreeItem *parent,
const wxString& text,
int image,
int selImage,
wxTreeItemData *data );
~wxGenericTreeItem();
// trivial accessors
wxArrayGenericTreeItems& GetChildren() { return m_children; }
const wxString& GetText() const { return m_text; }
int GetImage(wxTreeItemIcon which = wxTreeItemIcon_Normal) const
{ return m_images[which]; }
wxTreeItemData *GetData() const { return m_data; }
// returns the current image for the item (depending on its
// selected/expanded/whatever state)
int GetCurrentImage() const;
void SetText( const wxString &text );
void SetImage(int image, wxTreeItemIcon which) { m_images[which] = image; }
void SetData(wxTreeItemData *data) { m_data = data; }
void SetHasPlus(bool has = TRUE) { m_hasPlus = has; }
void SetBold(bool bold) { m_isBold = bold; }
int GetX() const { return m_x; }
int GetY() const { return m_y; }
void SetX(int x) { m_x = x; }
void SetY(int y) { m_y = y; }
int GetHeight() const { return m_height; }
int GetWidth() const { return m_width; }
void SetHeight(int h) { m_height = h; }
void SetWidth(int w) { m_width = w; }
wxGenericTreeItem *GetParent() const { return m_parent; }
// operations
// deletes all children notifying the treectrl about it if !NULL
// pointer given
void DeleteChildren(wxGenericTreeCtrl *tree = NULL);
// get count of all children (and grand children if 'recursively')
size_t GetChildrenCount(bool recursively = TRUE) const;
void Insert(wxGenericTreeItem *child, size_t index)
{ m_children.Insert(child, index); }
void GetSize( int &x, int &y, const wxGenericTreeCtrl* );
// return the item at given position (or NULL if no item), onButton is
// TRUE if the point belongs to the item's button, otherwise it lies
// on the button's label
wxGenericTreeItem *HitTest( const wxPoint& point,
const wxGenericTreeCtrl *,
int &flags,
int level );
void Expand() { m_isCollapsed = FALSE; }
void Collapse() { m_isCollapsed = TRUE; }
void SetHilight( bool set = TRUE ) { m_hasHilight = set; }
// status inquiries
bool HasChildren() const { return !m_children.IsEmpty(); }
bool IsSelected() const { return m_hasHilight != 0; }
bool IsExpanded() const { return !m_isCollapsed; }
bool HasPlus() const { return m_hasPlus || HasChildren(); }
bool IsBold() const { return m_isBold != 0; }
// attributes
// get them - may be NULL
wxTreeItemAttr *GetAttributes() const { return m_attr; }
// get them ensuring that the pointer is not NULL
wxTreeItemAttr& Attr()
{
if ( !m_attr )
{
m_attr = new wxTreeItemAttr;
m_ownsAttr = TRUE;
}
return *m_attr;
}
// set them
void SetAttributes(wxTreeItemAttr *attr)
{
if ( m_ownsAttr ) delete m_attr;
m_attr = attr;
m_ownsAttr = FALSE;
}
// set them and delete when done
void AssignAttributes(wxTreeItemAttr *attr)
{
SetAttributes(attr);
m_ownsAttr = TRUE;
}
private:
// since there can be very many of these, we save size by chosing
// the smallest representation for the elements and by ordering
// the members to avoid padding.
wxString m_text; // label to be rendered for item
wxTreeItemData *m_data; // user-provided data
wxArrayGenericTreeItems m_children; // list of children
wxGenericTreeItem *m_parent; // parent of this item
wxTreeItemAttr *m_attr; // attributes???
// tree ctrl images for the normal, selected, expanded and
// expanded+selected states
short m_images[wxTreeItemIcon_Max];
wxCoord m_x; // (virtual) offset from top
short m_y; // (virtual) offset from left
short m_width; // width of this item
unsigned char m_height; // height of this item
// use bitfields to save size
int m_isCollapsed :1;
int m_hasHilight :1; // same as focused
int m_hasPlus :1; // used for item which doesn't have
// children but has a [+] button
int m_isBold :1; // render the label in bold font
int m_ownsAttr :1; // delete attribute when done
};
// =============================================================================
// implementation
// =============================================================================
// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------
// translate the key or mouse event flags to the type of selection we're
// dealing with
static void EventFlagsToSelType(long style,
bool shiftDown,
bool ctrlDown,
bool &is_multiple,
bool &extended_select,
bool &unselect_others)
{
is_multiple = (style & wxTR_MULTIPLE) != 0;
extended_select = shiftDown && is_multiple;
unselect_others = !(extended_select || (ctrlDown && is_multiple));
}
// check if the given item is under another one
static bool IsDescendantOf(wxGenericTreeItem *parent, wxGenericTreeItem *item)
{
while ( item )
{
if ( item == parent )
{
// item is a descendant of parent
return TRUE;
}
item = item->GetParent();
}
return FALSE;
}
// -----------------------------------------------------------------------------
// wxTreeRenameTimer (internal)
// -----------------------------------------------------------------------------
wxTreeRenameTimer::wxTreeRenameTimer( wxGenericTreeCtrl *owner )
{
m_owner = owner;
}
void wxTreeRenameTimer::Notify()
{
m_owner->OnRenameTimer();
}
//-----------------------------------------------------------------------------
// wxTreeTextCtrl (internal)
//-----------------------------------------------------------------------------
BEGIN_EVENT_TABLE(wxTreeTextCtrl,wxTextCtrl)
EVT_CHAR (wxTreeTextCtrl::OnChar)
EVT_KEY_UP (wxTreeTextCtrl::OnKeyUp)
EVT_KILL_FOCUS (wxTreeTextCtrl::OnKillFocus)
END_EVENT_TABLE()
wxTreeTextCtrl::wxTreeTextCtrl(wxGenericTreeCtrl *owner,
wxGenericTreeItem *item)
: m_itemEdited(item), m_startValue(item->GetText())
{
m_owner = owner;
m_finished = FALSE;
int w = m_itemEdited->GetWidth(),
h = m_itemEdited->GetHeight();
int x, y;
m_owner->CalcScrolledPosition(item->GetX(), item->GetY(), &x, &y);
int image_h = 0,
image_w = 0;
int image = item->GetCurrentImage();
if ( image != NO_IMAGE )
{
if ( m_owner->m_imageListNormal )
{
m_owner->m_imageListNormal->GetSize( image, image_w, image_h );
image_w += 4;
}
else
{
wxFAIL_MSG(_T("you must create an image list to use images!"));
}
}
// FIXME: what are all these hardcoded 4, 8 and 11s really?
x += image_w;
w -= image_w + 4;
(void)Create(m_owner, wxID_ANY, m_startValue,
wxPoint(x - 4, y - 4), wxSize(w + 11, h + 8));
}
bool wxTreeTextCtrl::AcceptChanges()
{
const wxString value = GetValue();
if ( value == m_startValue )
{
// nothing changed, always accept
return TRUE;
}
if ( !m_owner->OnRenameAccept(m_itemEdited, value) )
{
// vetoed by the user
return FALSE;
}
// accepted, do rename the item
m_owner->SetItemText(m_itemEdited, value);
return TRUE;
}
void wxTreeTextCtrl::Finish()
{
if ( !m_finished )
{
wxPendingDelete.Append(this);
m_finished = TRUE;
m_owner->SetFocus(); // This doesn't work. TODO.
}
}
void wxTreeTextCtrl::OnChar( wxKeyEvent &event )
{
switch ( event.m_keyCode )
{
case WXK_RETURN:
if ( !AcceptChanges() )
{
// vetoed by the user, don't disappear
break;
}
//else: fall through
case WXK_ESCAPE:
Finish();
m_owner->OnRenameCancelled(m_itemEdited);
break;
default:
event.Skip();
}
}
void wxTreeTextCtrl::OnKeyUp( wxKeyEvent &event )
{
if ( !m_finished )
{
// auto-grow the textctrl:
wxSize parentSize = m_owner->GetSize();
wxPoint myPos = GetPosition();
wxSize mySize = GetSize();
int sx, sy;
GetTextExtent(GetValue() + _T("M"), &sx, &sy);
if (myPos.x + sx > parentSize.x)
sx = parentSize.x - myPos.x;
if (mySize.x > sx)
sx = mySize.x;
SetSize(sx, -1);
}
event.Skip();
}
void wxTreeTextCtrl::OnKillFocus( wxFocusEvent &event )
{
if ( m_finished )
{
event.Skip();
return;
}
if ( AcceptChanges() )
{
Finish();
}
}
// -----------------------------------------------------------------------------
// wxGenericTreeItem
// -----------------------------------------------------------------------------
wxGenericTreeItem::wxGenericTreeItem(wxGenericTreeItem *parent,
const wxString& text,
int image, int selImage,
wxTreeItemData *data)
: m_text(text)
{
m_images[wxTreeItemIcon_Normal] = image;
m_images[wxTreeItemIcon_Selected] = selImage;
m_images[wxTreeItemIcon_Expanded] = NO_IMAGE;
m_images[wxTreeItemIcon_SelectedExpanded] = NO_IMAGE;
m_data = data;
m_x = m_y = 0;
m_isCollapsed = TRUE;
m_hasHilight = FALSE;
m_hasPlus = FALSE;
m_isBold = FALSE;
m_parent = parent;
m_attr = (wxTreeItemAttr *)NULL;
m_ownsAttr = FALSE;
// We don't know the height here yet.
m_width = 0;
m_height = 0;
}
wxGenericTreeItem::~wxGenericTreeItem()
{
delete m_data;
if (m_ownsAttr) delete m_attr;
wxASSERT_MSG( m_children.IsEmpty(),
wxT("please call DeleteChildren() before deleting the item") );
}
void wxGenericTreeItem::DeleteChildren(wxGenericTreeCtrl *tree)
{
size_t count = m_children.Count();
for ( size_t n = 0; n < count; n++ )
{
wxGenericTreeItem *child = m_children[n];
if (tree)
tree->SendDeleteEvent(child);
child->DeleteChildren(tree);
delete child;
}
m_children.Empty();
}
void wxGenericTreeItem::SetText( const wxString &text )
{
m_text = text;
}
size_t wxGenericTreeItem::GetChildrenCount(bool recursively) const
{
size_t count = m_children.Count();
if ( !recursively )
return count;
size_t total = count;
for (size_t n = 0; n < count; ++n)
{
total += m_children[n]->GetChildrenCount();
}
return total;
}
void wxGenericTreeItem::GetSize( int &x, int &y,
const wxGenericTreeCtrl *theButton )
{
int bottomY=m_y+theButton->GetLineHeight(this);
if ( y < bottomY ) y = bottomY;
int width = m_x + m_width;
if ( x < width ) x = width;
if (IsExpanded())
{
size_t count = m_children.Count();
for ( size_t n = 0; n < count; ++n )
{
m_children[n]->GetSize( x, y, theButton );
}
}
}
wxGenericTreeItem *wxGenericTreeItem::HitTest(const wxPoint& point,
const wxGenericTreeCtrl *theCtrl,
int &flags,
int level)
{
// for a hidden root node, don't evaluate it, but do evaluate children
if ( !(level == 0 && theCtrl->HasFlag(wxTR_HIDE_ROOT)) )
{
// evaluate the item
int h = theCtrl->GetLineHeight(this);
if ((point.y > m_y) && (point.y < m_y + h))
{
int y_mid = m_y + h/2;
if (point.y < y_mid )
flags |= wxTREE_HITTEST_ONITEMUPPERPART;
else
flags |= wxTREE_HITTEST_ONITEMLOWERPART;
// 5 is the size of the plus sign
int xCross = m_x - theCtrl->GetSpacing();
if ((point.x > xCross-5) && (point.x < xCross+5) &&
(point.y > y_mid-5) && (point.y < y_mid+5) &&
HasPlus() && theCtrl->HasButtons() )
{
flags |= wxTREE_HITTEST_ONITEMBUTTON;
return this;
}
if ((point.x >= m_x) && (point.x <= m_x+m_width))
{
int image_w = -1;
int image_h;
// assuming every image (normal and selected) has the same size!
if ( (GetImage() != NO_IMAGE) && theCtrl->m_imageListNormal )
theCtrl->m_imageListNormal->GetSize(GetImage(),
image_w, image_h);
if ((image_w != -1) && (point.x <= m_x + image_w + 1))
flags |= wxTREE_HITTEST_ONITEMICON;
else
flags |= wxTREE_HITTEST_ONITEMLABEL;
return this;
}
if (point.x < m_x)
flags |= wxTREE_HITTEST_ONITEMINDENT;
if (point.x > m_x+m_width)
flags |= wxTREE_HITTEST_ONITEMRIGHT;
return this;
}
// if children are expanded, fall through to evaluate them
if (m_isCollapsed) return (wxGenericTreeItem*) NULL;
}
// evaluate children
size_t count = m_children.Count();
for ( size_t n = 0; n < count; n++ )
{
wxGenericTreeItem *res = m_children[n]->HitTest( point,
theCtrl,
flags,
level + 1 );
if ( res != NULL )
return res;
}
return (wxGenericTreeItem*) NULL;
}
int wxGenericTreeItem::GetCurrentImage() const
{
int image = NO_IMAGE;
if ( IsExpanded() )
{
if ( IsSelected() )
{
image = GetImage(wxTreeItemIcon_SelectedExpanded);
}
if ( image == NO_IMAGE )
{
// we usually fall back to the normal item, but try just the
// expanded one (and not selected) first in this case
image = GetImage(wxTreeItemIcon_Expanded);
}
}
else // not expanded
{
if ( IsSelected() )
image = GetImage(wxTreeItemIcon_Selected);
}
// maybe it doesn't have the specific image we want,
// try the default one instead
if ( image == NO_IMAGE ) image = GetImage();
return image;
}
// -----------------------------------------------------------------------------
// wxGenericTreeCtrl implementation
// -----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxGenericTreeCtrl, wxScrolledWindow)
BEGIN_EVENT_TABLE(wxGenericTreeCtrl,wxScrolledWindow)
EVT_PAINT (wxGenericTreeCtrl::OnPaint)
EVT_MOUSE_EVENTS (wxGenericTreeCtrl::OnMouse)
EVT_CHAR (wxGenericTreeCtrl::OnChar)
EVT_SET_FOCUS (wxGenericTreeCtrl::OnSetFocus)
EVT_KILL_FOCUS (wxGenericTreeCtrl::OnKillFocus)
EVT_IDLE (wxGenericTreeCtrl::OnIdle)
END_EVENT_TABLE()
#if !defined(__WXMSW__) || defined(__WIN16__) || defined(__WXUNIVERSAL__)
/*
* wxTreeCtrl has to be a real class or we have problems with
* the run-time information.
*/
IMPLEMENT_DYNAMIC_CLASS(wxTreeCtrl, wxGenericTreeCtrl)
#endif
// -----------------------------------------------------------------------------
// construction/destruction
// -----------------------------------------------------------------------------
void wxGenericTreeCtrl::Init()
{
m_current = m_key_current = m_anchor = (wxGenericTreeItem *) NULL;
m_hasFocus = FALSE;
m_dirty = FALSE;
m_lineHeight = 10;
m_indent = 15;
m_spacing = 18;
m_hilightBrush = new wxBrush
(
wxSystemSettings::GetColour
(
wxSYS_COLOUR_HIGHLIGHT
),
wxSOLID
);
m_hilightUnfocusedBrush = new wxBrush
(
wxSystemSettings::GetColour
(
wxSYS_COLOUR_BTNSHADOW
),
wxSOLID
);
m_imageListNormal = m_imageListButtons =
m_imageListState = (wxImageList *) NULL;
m_ownsImageListNormal = m_ownsImageListButtons =
m_ownsImageListState = FALSE;
m_dragCount = 0;
m_isDragging = FALSE;
m_dropTarget = m_oldSelection = (wxGenericTreeItem *)NULL;
m_renameTimer = NULL;
m_findTimer = NULL;
m_lastOnSame = FALSE;
m_normalFont = wxSystemSettings::GetFont( wxSYS_DEFAULT_GUI_FONT );
m_boldFont = wxFont( m_normalFont.GetPointSize(),
m_normalFont.GetFamily(),
m_normalFont.GetStyle(),
wxBOLD,
m_normalFont.GetUnderlined());
}
bool wxGenericTreeCtrl::Create(wxWindow *parent,
wxWindowID id,
const wxPoint& pos,
const wxSize& size,
long style,
const wxValidator &validator,
const wxString& name )
{
#ifdef __WXMAC__
int major,minor;
wxGetOsVersion( &major, &minor );
if (style & wxTR_HAS_BUTTONS) style |= wxTR_MAC_BUTTONS;
if (style & wxTR_HAS_BUTTONS) style &= ~wxTR_HAS_BUTTONS;
style &= ~wxTR_LINES_AT_ROOT;
style |= wxTR_NO_LINES;
if (major < 10)
style |= wxTR_ROW_LINES;
if (major >= 10)
style |= wxTR_AQUA_BUTTONS;
#endif
if (style & wxTR_AQUA_BUTTONS)
{
m_arrowRight = new wxBitmap( aqua_arrow_right );
m_arrowDown = new wxBitmap( aqua_arrow_down );
}
else
{
m_arrowRight = NULL;
m_arrowDown = NULL;
}
wxScrolledWindow::Create( parent, id, pos, size,
style|wxHSCROLL|wxVSCROLL, name );
// If the tree display has no buttons, but does have
// connecting lines, we can use a narrower layout.
// It may not be a good idea to force this...
if (!HasButtons() && !HasFlag(wxTR_NO_LINES))
{
m_indent= 10;
m_spacing = 10;
}
#if wxUSE_VALIDATORS
SetValidator( validator );
#endif
SetForegroundColour( wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT) );
SetBackgroundColour( wxSystemSettings::GetColour(wxSYS_COLOUR_LISTBOX) );
// m_dottedPen = wxPen( "grey", 0, wxDOT ); too slow under XFree86
m_dottedPen = wxPen( wxT("grey"), 0, 0 );
return TRUE;
}
wxGenericTreeCtrl::~wxGenericTreeCtrl()
{
delete m_hilightBrush;
delete m_hilightUnfocusedBrush;
delete m_arrowRight;
delete m_arrowDown;
DeleteAllItems();
delete m_renameTimer;
delete m_findTimer;
if (m_ownsImageListNormal)
delete m_imageListNormal;
if (m_ownsImageListState)
delete m_imageListState;
if (m_ownsImageListButtons)
delete m_imageListButtons;
}
// -----------------------------------------------------------------------------
// accessors
// -----------------------------------------------------------------------------
size_t wxGenericTreeCtrl::GetCount() const
{
return m_anchor == NULL ? 0u : m_anchor->GetChildrenCount();
}
void wxGenericTreeCtrl::SetIndent(unsigned int indent)
{
m_indent = (unsigned short) indent;
m_dirty = TRUE;
}
void wxGenericTreeCtrl::SetSpacing(unsigned int spacing)
{
m_spacing = (unsigned short) spacing;
m_dirty = TRUE;
}
size_t wxGenericTreeCtrl::GetChildrenCount(const wxTreeItemId& item, bool recursively)
{
wxCHECK_MSG( item.IsOk(), 0u, wxT("invalid tree item") );
return ((wxGenericTreeItem*) item.m_pItem)->GetChildrenCount(recursively);
}
void wxGenericTreeCtrl::SetWindowStyle(const long styles)
{
if (!HasFlag(wxTR_HIDE_ROOT) && (styles & wxTR_HIDE_ROOT))
{
// if we will hide the root, make sure children are visible
m_anchor->SetHasPlus();
m_anchor->Expand();
CalculatePositions();
}
// right now, just sets the styles. Eventually, we may
// want to update the inherited styles, but right now
// none of the parents has updatable styles
m_windowStyle = styles;
m_dirty = TRUE;
}
// -----------------------------------------------------------------------------
// functions to work with tree items
// -----------------------------------------------------------------------------
wxString wxGenericTreeCtrl::GetItemText(const wxTreeItemId& item) const
{
wxCHECK_MSG( item.IsOk(), wxT(""), wxT("invalid tree item") );
return ((wxGenericTreeItem*) item.m_pItem)->GetText();
}
int wxGenericTreeCtrl::GetItemImage(const wxTreeItemId& item,
wxTreeItemIcon which) const
{
wxCHECK_MSG( item.IsOk(), -1, wxT("invalid tree item") );
return ((wxGenericTreeItem*) item.m_pItem)->GetImage(which);
}
wxTreeItemData *wxGenericTreeCtrl::GetItemData(const wxTreeItemId& item) const
{
wxCHECK_MSG( item.IsOk(), NULL, wxT("invalid tree item") );
return ((wxGenericTreeItem*) item.m_pItem)->GetData();
}
void wxGenericTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text)
{
wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
wxClientDC dc(this);
wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
pItem->SetText(text);
CalculateSize(pItem, dc);
RefreshLine(pItem);
}
void wxGenericTreeCtrl::SetItemImage(const wxTreeItemId& item,
int image,
wxTreeItemIcon which)
{
wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
pItem->SetImage(image, which);
wxClientDC dc(this);
CalculateSize(pItem, dc);
RefreshLine(pItem);
}
void wxGenericTreeCtrl::SetItemData(const wxTreeItemId& item, wxTreeItemData *data)
{
wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
((wxGenericTreeItem*) item.m_pItem)->SetData(data);
}
void wxGenericTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has)
{
wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
pItem->SetHasPlus(has);
RefreshLine(pItem);
}
void wxGenericTreeCtrl::SetItemBold(const wxTreeItemId& item, bool bold)
{
wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
// avoid redrawing the tree if no real change
wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
if ( pItem->IsBold() != bold )
{
pItem->SetBold(bold);
RefreshLine(pItem);
}
}
void wxGenericTreeCtrl::SetItemTextColour(const wxTreeItemId& item,
const wxColour& col)
{
wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
pItem->Attr().SetTextColour(col);
RefreshLine(pItem);
}
void wxGenericTreeCtrl::SetItemBackgroundColour(const wxTreeItemId& item,
const wxColour& col)
{
wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
pItem->Attr().SetBackgroundColour(col);
RefreshLine(pItem);
}
void wxGenericTreeCtrl::SetItemFont(const wxTreeItemId& item, const wxFont& font)
{
wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
pItem->Attr().SetFont(font);
RefreshLine(pItem);
}
bool wxGenericTreeCtrl::SetFont( const wxFont &font )
{
wxScrolledWindow::SetFont(font);
m_normalFont = font ;
m_boldFont = wxFont( m_normalFont.GetPointSize(),
m_normalFont.GetFamily(),
m_normalFont.GetStyle(),
wxBOLD,
m_normalFont.GetUnderlined());
return TRUE;
}
// -----------------------------------------------------------------------------
// item status inquiries
// -----------------------------------------------------------------------------
bool wxGenericTreeCtrl::IsVisible(const wxTreeItemId& item) const
{
wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
// An item is only visible if it's not a descendant of a collapsed item
wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
wxGenericTreeItem* parent = pItem->GetParent();
while (parent)
{
if (!parent->IsExpanded())
return FALSE;
parent = parent->GetParent();
}
int startX, startY;
GetViewStart(& startX, & startY);
wxSize clientSize = GetClientSize();
wxRect rect;
if (!GetBoundingRect(item, rect))
return FALSE;
if (rect.GetWidth() == 0 || rect.GetHeight() == 0)
return FALSE;
if (rect.GetBottom() < 0 || rect.GetTop() > clientSize.y)
return FALSE;
if (rect.GetRight() < 0 || rect.GetLeft() > clientSize.x)
return FALSE;
return TRUE;
}
bool wxGenericTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const
{
wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
// consider that the item does have children if it has the "+" button: it
// might not have them (if it had never been expanded yet) but then it
// could have them as well and it's better to err on this side rather than
// disabling some operations which are restricted to the items with
// children for an item which does have them
return ((wxGenericTreeItem*) item.m_pItem)->HasPlus();
}
bool wxGenericTreeCtrl::IsExpanded(const wxTreeItemId& item) const
{
wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
return ((wxGenericTreeItem*) item.m_pItem)->IsExpanded();
}
bool wxGenericTreeCtrl::IsSelected(const wxTreeItemId& item) const
{
wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
return ((wxGenericTreeItem*) item.m_pItem)->IsSelected();
}
bool wxGenericTreeCtrl::IsBold(const wxTreeItemId& item) const
{
wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
return ((wxGenericTreeItem*) item.m_pItem)->IsBold();
}
// -----------------------------------------------------------------------------
// navigation
// -----------------------------------------------------------------------------
wxTreeItemId wxGenericTreeCtrl::GetParent(const wxTreeItemId& item) const
{
wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
return ((wxGenericTreeItem*) item.m_pItem)->GetParent();
}
wxTreeItemId wxGenericTreeCtrl::GetFirstChild(const wxTreeItemId& item, long& cookie) const
{
wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
cookie = 0;
return GetNextChild(item, cookie);
}
wxTreeItemId wxGenericTreeCtrl::GetNextChild(const wxTreeItemId& item, long& cookie) const
{
wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
wxArrayGenericTreeItems& children = ((wxGenericTreeItem*) item.m_pItem)->GetChildren();
if ( (size_t)cookie < children.Count() )
{
return children.Item((size_t)cookie++);
}
else
{
// there are no more of them
return wxTreeItemId();
}
}
wxTreeItemId wxGenericTreeCtrl::GetLastChild(const wxTreeItemId& item) const
{
wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
wxArrayGenericTreeItems& children = ((wxGenericTreeItem*) item.m_pItem)->GetChildren();
return (children.IsEmpty() ? wxTreeItemId() : wxTreeItemId(children.Last()));
}
wxTreeItemId wxGenericTreeCtrl::GetNextSibling(const wxTreeItemId& item) const
{
wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
wxGenericTreeItem *parent = i->GetParent();
if ( parent == NULL )
{
// root item doesn't have any siblings
return wxTreeItemId();
}
wxArrayGenericTreeItems& siblings = parent->GetChildren();
int index = siblings.Index(i);
wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
size_t n = (size_t)(index + 1);
return n == siblings.Count() ? wxTreeItemId() : wxTreeItemId(siblings[n]);
}
wxTreeItemId wxGenericTreeCtrl::GetPrevSibling(const wxTreeItemId& item) const
{
wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
wxGenericTreeItem *parent = i->GetParent();
if ( parent == NULL )
{
// root item doesn't have any siblings
return wxTreeItemId();
}
wxArrayGenericTreeItems& siblings = parent->GetChildren();
int index = siblings.Index(i);
wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
return index == 0 ? wxTreeItemId()
: wxTreeItemId(siblings[(size_t)(index - 1)]);
}
// Only for internal use right now, but should probably be public
wxTreeItemId wxGenericTreeCtrl::GetNext(const wxTreeItemId& item) const
{
wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
// First see if there are any children.
wxArrayGenericTreeItems& children = i->GetChildren();
if (children.GetCount() > 0)
{
return children.Item(0);
}
else
{
// Try a sibling of this or ancestor instead
wxTreeItemId p = item;
wxTreeItemId toFind;
do
{
toFind = GetNextSibling(p);
p = GetParent(p);
} while (p.IsOk() && !toFind.IsOk());
return toFind;
}
}
wxTreeItemId wxGenericTreeCtrl::GetFirstVisibleItem() const
{
wxTreeItemId id = GetRootItem();
if (!id.IsOk())
return id;
do
{
if (IsVisible(id))
return id;
id = GetNext(id);
} while (id.IsOk());
return wxTreeItemId();
}
wxTreeItemId wxGenericTreeCtrl::GetNextVisible(const wxTreeItemId& item) const
{
wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
wxTreeItemId id = item;
if (id.IsOk())
{
while (id = GetNext(id), id.IsOk())
{
if (IsVisible(id))
return id;
}
}
return wxTreeItemId();
}
wxTreeItemId wxGenericTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const
{
wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
wxFAIL_MSG(wxT("not implemented"));
return wxTreeItemId();
}
// find the first item starting with the given prefix after the given item
wxTreeItemId wxGenericTreeCtrl::FindItem(const wxTreeItemId& idParent,
const wxString& prefixOrig) const
{
// match is case insensitive as this is more convenient to the user: having
// to press Shift-letter to go to the item starting with a capital letter
// would be too bothersome
wxString prefix = prefixOrig.Lower();
// determine the starting point: we shouldn't take the current item (this
// allows to switch between two items starting with the same letter just by
// pressing it) but we shouldn't jump to the next one if the user is
// continuing to type as otherwise he might easily skip the item he wanted
wxTreeItemId id = idParent;
if ( prefix.length() == 1 )
{
id = GetNext(id);
}
// look for the item starting with the given prefix after it
while ( id.IsOk() && !GetItemText(id).Lower().StartsWith(prefix) )
{
id = GetNext(id);
}
// if we haven't found anything...
if ( !id.IsOk() )
{
// ... wrap to the beginning
id = GetRootItem();
if ( HasFlag(wxTR_HIDE_ROOT) )
{
// can't select virtual root
id = GetNext(id);
}
// and try all the items (stop when we get to the one we started from)
while ( id != idParent && !GetItemText(id).Lower().StartsWith(prefix) )
{
id = GetNext(id);
}
}
return id;
}
// -----------------------------------------------------------------------------
// operations
// -----------------------------------------------------------------------------
wxTreeItemId wxGenericTreeCtrl::DoInsertItem(const wxTreeItemId& parentId,
size_t previous,
const wxString& text,
int image, int selImage,
wxTreeItemData *data)
{
wxGenericTreeItem *parent = (wxGenericTreeItem*) parentId.m_pItem;
if ( !parent )
{
// should we give a warning here?
return AddRoot(text, image, selImage, data);
}
m_dirty = TRUE; // do this first so stuff below doesn't cause flicker
wxGenericTreeItem *item =
new wxGenericTreeItem( parent, text, image, selImage, data );
if ( data != NULL )
{
data->m_pItem = (long) item;
}
parent->Insert( item, previous );
return item;
}
wxTreeItemId wxGenericTreeCtrl::AddRoot(const wxString& text,
int image, int selImage,
wxTreeItemData *data)
{
wxCHECK_MSG( !m_anchor, wxTreeItemId(), wxT("tree can have only one root") );
m_dirty = TRUE; // do this first so stuff below doesn't cause flicker
m_anchor = new wxGenericTreeItem((wxGenericTreeItem *)NULL, text,
image, selImage, data);
if ( data != NULL )
{
data->m_pItem = (long) m_anchor;
}
if (HasFlag(wxTR_HIDE_ROOT))
{
// if root is hidden, make sure we can navigate
// into children
m_anchor->SetHasPlus();
m_anchor->Expand();
CalculatePositions();
}
if (!HasFlag(wxTR_MULTIPLE))
{
m_current = m_key_current = m_anchor;
m_current->SetHilight( TRUE );
}
return m_anchor;
}
wxTreeItemId wxGenericTreeCtrl::PrependItem(const wxTreeItemId& parent,
const wxString& text,
int image, int selImage,
wxTreeItemData *data)
{
return DoInsertItem(parent, 0u, text, image, selImage, data);
}
wxTreeItemId wxGenericTreeCtrl::InsertItem(const wxTreeItemId& parentId,
const wxTreeItemId& idPrevious,
const wxString& text,
int image, int selImage,
wxTreeItemData *data)
{
wxGenericTreeItem *parent = (wxGenericTreeItem*) parentId.m_pItem;
if ( !parent )
{
// should we give a warning here?
return AddRoot(text, image, selImage, data);
}
int index = -1;
if (idPrevious.IsOk())
{
index = parent->GetChildren().Index((wxGenericTreeItem*) idPrevious.m_pItem);
wxASSERT_MSG( index != wxNOT_FOUND,
wxT("previous item in wxGenericTreeCtrl::InsertItem() is not a sibling") );
}
return DoInsertItem(parentId, (size_t)++index, text, image, selImage, data);
}
wxTreeItemId wxGenericTreeCtrl::InsertItem(const wxTreeItemId& parentId,
size_t before,
const wxString& text,
int image, int selImage,
wxTreeItemData *data)
{
wxGenericTreeItem *parent = (wxGenericTreeItem*) parentId.m_pItem;
if ( !parent )
{
// should we give a warning here?
return AddRoot(text, image, selImage, data);
}
return DoInsertItem(parentId, before, text, image, selImage, data);
}
wxTreeItemId wxGenericTreeCtrl::AppendItem(const wxTreeItemId& parentId,
const wxString& text,
int image, int selImage,
wxTreeItemData *data)
{
wxGenericTreeItem *parent = (wxGenericTreeItem*) parentId.m_pItem;
if ( !parent )
{
// should we give a warning here?
return AddRoot(text, image, selImage, data);
}
return DoInsertItem( parent, parent->GetChildren().Count(), text,
image, selImage, data);
}
void wxGenericTreeCtrl::SendDeleteEvent(wxGenericTreeItem *item)
{
wxTreeEvent event( wxEVT_COMMAND_TREE_DELETE_ITEM, GetId() );
event.m_item = (long) item;
event.SetEventObject( this );
ProcessEvent( event );
}
void wxGenericTreeCtrl::DeleteChildren(const wxTreeItemId& itemId)
{
m_dirty = TRUE; // do this first so stuff below doesn't cause flicker
wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
item->DeleteChildren(this);
}
void wxGenericTreeCtrl::Delete(const wxTreeItemId& itemId)
{
m_dirty = TRUE; // do this first so stuff below doesn't cause flicker
wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
wxGenericTreeItem *parent = item->GetParent();
// don't keep stale pointers around!
if ( IsDescendantOf(item, m_key_current) )
{
m_key_current = parent;
}
if ( IsDescendantOf(item, m_current) )
{
m_current = parent;
}
// remove the item from the tree
if ( parent )
{
parent->GetChildren().Remove( item ); // remove by value
}
else // deleting the root
{
// nothing will be left in the tree
m_anchor = NULL;
}
// and delete all of its children and the item itself now
item->DeleteChildren(this);
SendDeleteEvent(item);
delete item;
}
void wxGenericTreeCtrl::DeleteAllItems()
{
if ( m_anchor )
{
Delete(m_anchor);
}
}
void wxGenericTreeCtrl::Expand(const wxTreeItemId& itemId)
{
wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
wxCHECK_RET( item, _T("invalid item in wxGenericTreeCtrl::Expand") );
wxCHECK_RET( !HasFlag(wxTR_HIDE_ROOT) || itemId != GetRootItem(),
_T("can't expand hidden root") );
if ( !item->HasPlus() )
return;
if ( item->IsExpanded() )
return;
wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_EXPANDING, GetId() );
event.m_item = (long) item;
event.SetEventObject( this );
if ( ProcessEvent( event ) && !event.IsAllowed() )
{
// cancelled by program
return;
}
item->Expand();
CalculatePositions();
RefreshSubtree(item);
event.SetEventType(wxEVT_COMMAND_TREE_ITEM_EXPANDED);
ProcessEvent( event );
}
void wxGenericTreeCtrl::ExpandAll(const wxTreeItemId& item)
{
if ( !HasFlag(wxTR_HIDE_ROOT) || item != GetRootItem())
{
Expand(item);
if ( !IsExpanded(item) )
return;
}
long cookie;
wxTreeItemId child = GetFirstChild(item, cookie);
while ( child.IsOk() )
{
ExpandAll(child);
child = GetNextChild(item, cookie);
}
}
void wxGenericTreeCtrl::Collapse(const wxTreeItemId& itemId)
{
wxCHECK_RET( !HasFlag(wxTR_HIDE_ROOT) || itemId != GetRootItem(),
_T("can't collapse hidden root") );
wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
if ( !item->IsExpanded() )
return;
wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_COLLAPSING, GetId() );
event.m_item = (long) item;
event.SetEventObject( this );
if ( ProcessEvent( event ) && !event.IsAllowed() )
{
// cancelled by program
return;
}
item->Collapse();
#if 0 // TODO why should items be collapsed recursively?
wxArrayGenericTreeItems& children = item->GetChildren();
size_t count = children.Count();
for ( size_t n = 0; n < count; n++ )
{
Collapse(children[n]);
}
#endif
CalculatePositions();
RefreshSubtree(item);
event.SetEventType(wxEVT_COMMAND_TREE_ITEM_COLLAPSED);
ProcessEvent( event );
}
void wxGenericTreeCtrl::CollapseAndReset(const wxTreeItemId& item)
{
Collapse(item);
DeleteChildren(item);
}
void wxGenericTreeCtrl::Toggle(const wxTreeItemId& itemId)
{
wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
if (item->IsExpanded())
Collapse(itemId);
else
Expand(itemId);
}
void wxGenericTreeCtrl::Unselect()
{
if (m_current)
{
m_current->SetHilight( FALSE );
RefreshLine( m_current );
m_current = NULL;
}
}
void wxGenericTreeCtrl::UnselectAllChildren(wxGenericTreeItem *item)
{
if (item->IsSelected())
{
item->SetHilight(FALSE);
RefreshLine(item);
}
if (item->HasChildren())
{
wxArrayGenericTreeItems& children = item->GetChildren();
size_t count = children.Count();
for ( size_t n = 0; n < count; ++n )
{
UnselectAllChildren(children[n]);
}
}
}
void wxGenericTreeCtrl::UnselectAll()
{
wxTreeItemId rootItem = GetRootItem();
// the tree might not have the root item at all
if ( rootItem )
{
UnselectAllChildren((wxGenericTreeItem*) rootItem.m_pItem);
}
}
// Recursive function !
// To stop we must have crt_item<last_item
// Algorithm :
// Tag all next children, when no more children,
// Move to parent (not to tag)
// Keep going... if we found last_item, we stop.
bool wxGenericTreeCtrl::TagNextChildren(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select)
{
wxGenericTreeItem *parent = crt_item->GetParent();
if (parent == NULL) // This is root item
return TagAllChildrenUntilLast(crt_item, last_item, select);
wxArrayGenericTreeItems& children = parent->GetChildren();
int index = children.Index(crt_item);
wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
size_t count = children.Count();
for (size_t n=(size_t)(index+1); n<count; ++n)
{
if (TagAllChildrenUntilLast(children[n], last_item, select)) return TRUE;
}
return TagNextChildren(parent, last_item, select);
}
bool wxGenericTreeCtrl::TagAllChildrenUntilLast(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select)
{
crt_item->SetHilight(select);
RefreshLine(crt_item);
if (crt_item==last_item)
return TRUE;
if (crt_item->HasChildren())
{
wxArrayGenericTreeItems& children = crt_item->GetChildren();
size_t count = children.Count();
for ( size_t n = 0; n < count; ++n )
{
if (TagAllChildrenUntilLast(children[n], last_item, select))
return TRUE;
}
}
return FALSE;
}
void wxGenericTreeCtrl::SelectItemRange(wxGenericTreeItem *item1, wxGenericTreeItem *item2)
{
// item2 is not necessary after item1
wxGenericTreeItem *first=NULL, *last=NULL;
// choice first' and 'last' between item1 and item2
if (item1->GetY()<item2->GetY())
{
first=item1;
last=item2;
}
else
{
first=item2;
last=item1;
}
bool select = m_current->IsSelected();
if ( TagAllChildrenUntilLast(first,last,select) )
return;
TagNextChildren(first,last,select);
}
void wxGenericTreeCtrl::SelectItem(const wxTreeItemId& itemId,
bool unselect_others,
bool extended_select)
{
wxCHECK_RET( itemId.IsOk(), wxT("invalid tree item") );
bool is_single=!(GetWindowStyleFlag() & wxTR_MULTIPLE);
wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
//wxCHECK_RET( ( (!unselect_others) && is_single),
// wxT("this is a single selection tree") );
// to keep going anyhow !!!
if (is_single)
{
if (item->IsSelected())
return; // nothing to do
unselect_others = TRUE;
extended_select = FALSE;
}
else if ( unselect_others && item->IsSelected() )
{
// selection change if there is more than one item currently selected
wxArrayTreeItemIds selected_items;
if ( GetSelections(selected_items) == 1 )
return;
}
wxTreeEvent event( wxEVT_COMMAND_TREE_SEL_CHANGING, GetId() );
event.m_item = (long) item;
event.m_itemOld = (long) m_current;
event.SetEventObject( this );
// TODO : Here we don't send any selection mode yet !
if ( GetEventHandler()->ProcessEvent( event ) && !event.IsAllowed() )
return;
wxTreeItemId parent = GetParent( itemId );
while (parent.IsOk())
{
if (!IsExpanded(parent))
Expand( parent );
parent = GetParent( parent );
}
EnsureVisible( itemId );
// ctrl press
if (unselect_others)
{
if (is_single) Unselect(); // to speed up thing
else UnselectAll();
}
// shift press
if (extended_select)
{
if ( !m_current )
{
m_current = m_key_current = (wxGenericTreeItem*) GetRootItem().m_pItem;
}
// don't change the mark (m_current)
SelectItemRange(m_current, item);
}
else
{
bool select=TRUE; // the default
// Check if we need to toggle hilight (ctrl mode)
if (!unselect_others)
select=!item->IsSelected();
m_current = m_key_current = item;
m_current->SetHilight(select);
RefreshLine( m_current );
}
event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGED);
GetEventHandler()->ProcessEvent( event );
}
void wxGenericTreeCtrl::FillArray(wxGenericTreeItem *item,
wxArrayTreeItemIds &array) const
{
if ( item->IsSelected() )
array.Add(wxTreeItemId(item));
if ( item->HasChildren() )
{
wxArrayGenericTreeItems& children = item->GetChildren();
size_t count = children.GetCount();
for ( size_t n = 0; n < count; ++n )
FillArray(children[n], array);
}
}
size_t wxGenericTreeCtrl::GetSelections(wxArrayTreeItemIds &array) const
{
array.Empty();
wxTreeItemId idRoot = GetRootItem();
if ( idRoot.IsOk() )
{
FillArray((wxGenericTreeItem*) idRoot.m_pItem, array);
}
//else: the tree is empty, so no selections
return array.Count();
}
void wxGenericTreeCtrl::EnsureVisible(const wxTreeItemId& item)
{
if (!item.IsOk()) return;
wxGenericTreeItem *gitem = (wxGenericTreeItem*) item.m_pItem;
// first expand all parent branches
wxGenericTreeItem *parent = gitem->GetParent();
if ( HasFlag(wxTR_HIDE_ROOT) )
{
while ( parent != m_anchor )
{
Expand(parent);
parent = parent->GetParent();
}
}
else
{
while ( parent )
{
Expand(parent);
parent = parent->GetParent();
}
}
//if (parent) CalculatePositions();
ScrollTo(item);
}
void wxGenericTreeCtrl::ScrollTo(const wxTreeItemId &item)
{
if (!item.IsOk()) return;
// We have to call this here because the label in
// question might just have been added and no screen
// update taken place.
if (m_dirty) wxYieldIfNeeded();
wxGenericTreeItem *gitem = (wxGenericTreeItem*) item.m_pItem;
// now scroll to the item
int item_y = gitem->GetY();
int start_x = 0;
int start_y = 0;
GetViewStart( &start_x, &start_y );
start_y *= PIXELS_PER_UNIT;
int client_h = 0;
int client_w = 0;
GetClientSize( &client_w, &client_h );
if (item_y < start_y+3)
{
// going down
int x = 0;
int y = 0;
m_anchor->GetSize( x, y, this );
y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
x += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
int x_pos = GetScrollPos( wxHORIZONTAL );
// Item should appear at top
SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, item_y/PIXELS_PER_UNIT );
}
else if (item_y+GetLineHeight(gitem) > start_y+client_h)
{
// going up
int x = 0;
int y = 0;
m_anchor->GetSize( x, y, this );
y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
x += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
item_y += PIXELS_PER_UNIT+2;
int x_pos = GetScrollPos( wxHORIZONTAL );
// Item should appear at bottom
SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, (item_y+GetLineHeight(gitem)-client_h)/PIXELS_PER_UNIT );
}
}
// FIXME: tree sorting functions are not reentrant and not MT-safe!
static wxGenericTreeCtrl *s_treeBeingSorted = NULL;
static int LINKAGEMODE tree_ctrl_compare_func(wxGenericTreeItem **item1,
wxGenericTreeItem **item2)
{
wxCHECK_MSG( s_treeBeingSorted, 0, wxT("bug in wxGenericTreeCtrl::SortChildren()") );
return s_treeBeingSorted->OnCompareItems(*item1, *item2);
}
int wxGenericTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
const wxTreeItemId& item2)
{
return wxStrcmp(GetItemText(item1), GetItemText(item2));
}
void wxGenericTreeCtrl::SortChildren(const wxTreeItemId& itemId)
{
wxCHECK_RET( itemId.IsOk(), wxT("invalid tree item") );
wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
wxCHECK_RET( !s_treeBeingSorted,
wxT("wxGenericTreeCtrl::SortChildren is not reentrant") );
wxArrayGenericTreeItems& children = item->GetChildren();
if ( children.Count() > 1 )
{
m_dirty = TRUE;
s_treeBeingSorted = this;
children.Sort(tree_ctrl_compare_func);
s_treeBeingSorted = NULL;
}
//else: don't make the tree dirty as nothing changed
}
wxImageList *wxGenericTreeCtrl::GetImageList() const
{
return m_imageListNormal;
}
wxImageList *wxGenericTreeCtrl::GetButtonsImageList() const
{
return m_imageListButtons;
}
wxImageList *wxGenericTreeCtrl::GetStateImageList() const
{
return m_imageListState;
}
void wxGenericTreeCtrl::CalculateLineHeight()
{
wxClientDC dc(this);
m_lineHeight = (int)(dc.GetCharHeight() + 4);
if ( m_imageListNormal )
{
// Calculate a m_lineHeight value from the normal Image sizes.
// May be toggle off. Then wxGenericTreeCtrl will spread when
// necessary (which might look ugly).
int n = m_imageListNormal->GetImageCount();
for (int i = 0; i < n ; i++)
{
int width = 0, height = 0;
m_imageListNormal->GetSize(i, width, height);
if (height > m_lineHeight) m_lineHeight = height;
}
}
if (m_imageListButtons)
{
// Calculate a m_lineHeight value from the Button image sizes.
// May be toggle off. Then wxGenericTreeCtrl will spread when
// necessary (which might look ugly).
int n = m_imageListButtons->GetImageCount();
for (int i = 0; i < n ; i++)
{
int width = 0, height = 0;
m_imageListButtons->GetSize(i, width, height);
if (height > m_lineHeight) m_lineHeight = height;
}
}
if (m_lineHeight < 30)
m_lineHeight += 2; // at least 2 pixels
else
m_lineHeight += m_lineHeight/10; // otherwise 10% extra spacing
}
void wxGenericTreeCtrl::SetImageList(wxImageList *imageList)
{
if (m_ownsImageListNormal) delete m_imageListNormal;
m_imageListNormal = imageList;
m_ownsImageListNormal = FALSE;
m_dirty = TRUE;
// Don't do any drawing if we're setting the list to NULL,
// since we may be in the process of deleting the tree control.
if (imageList)
CalculateLineHeight();
}
void wxGenericTreeCtrl::SetStateImageList(wxImageList *imageList)
{
if (m_ownsImageListState) delete m_imageListState;
m_imageListState = imageList;
m_ownsImageListState = FALSE;
}
void wxGenericTreeCtrl::SetButtonsImageList(wxImageList *imageList)
{
if (m_ownsImageListButtons) delete m_imageListButtons;
m_imageListButtons = imageList;
m_ownsImageListButtons = FALSE;
m_dirty = TRUE;
CalculateLineHeight();
}
void wxGenericTreeCtrl::AssignImageList(wxImageList *imageList)
{
SetImageList(imageList);
m_ownsImageListNormal = TRUE;
}
void wxGenericTreeCtrl::AssignStateImageList(wxImageList *imageList)
{
SetStateImageList(imageList);
m_ownsImageListState = TRUE;
}
void wxGenericTreeCtrl::AssignButtonsImageList(wxImageList *imageList)
{
SetButtonsImageList(imageList);
m_ownsImageListButtons = TRUE;
}
// -----------------------------------------------------------------------------
// helpers
// -----------------------------------------------------------------------------
void wxGenericTreeCtrl::AdjustMyScrollbars()
{
if (m_anchor)
{
int x = 0, y = 0;
m_anchor->GetSize( x, y, this );
y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
x += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
int x_pos = GetScrollPos( wxHORIZONTAL );
int y_pos = GetScrollPos( wxVERTICAL );
SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, y_pos );
}
else
{
SetScrollbars( 0, 0, 0, 0 );
}
}
int wxGenericTreeCtrl::GetLineHeight(wxGenericTreeItem *item) const
{
if (GetWindowStyleFlag() & wxTR_HAS_VARIABLE_ROW_HEIGHT)
return item->GetHeight();
else
return m_lineHeight;
}
void wxGenericTreeCtrl::PaintItem(wxGenericTreeItem *item, wxDC& dc)
{
// TODO implement "state" icon on items
wxTreeItemAttr *attr = item->GetAttributes();
if ( attr && attr->HasFont() )
dc.SetFont(attr->GetFont());
else if (item->IsBold())
dc.SetFont(m_boldFont);
long text_w = 0, text_h = 0;
dc.GetTextExtent( item->GetText(), &text_w, &text_h );
int image_h = 0, image_w = 0;
int image = item->GetCurrentImage();
if ( image != NO_IMAGE )
{
if ( m_imageListNormal )
{
m_imageListNormal->GetSize( image, image_w, image_h );
image_w += 4;
}
else
{
image = NO_IMAGE;
}
}
int total_h = GetLineHeight(item);
if ( item->IsSelected() )
{
dc.SetBrush(*(m_hasFocus ? m_hilightBrush : m_hilightUnfocusedBrush));
}
else
{
wxColour colBg;
if ( attr && attr->HasBackgroundColour() )
colBg = attr->GetBackgroundColour();
else
colBg = m_backgroundColour;
dc.SetBrush(wxBrush(colBg, wxSOLID));
}
int offset = HasFlag(wxTR_ROW_LINES) ? 1 : 0;
if ( HasFlag(wxTR_FULL_ROW_HIGHLIGHT) )
{
int x, y, w, h;
DoGetPosition(&x, &y);
DoGetSize(&w, &h);
dc.DrawRectangle(x, item->GetY()+offset, w, total_h-offset);
}
else
{
if ( item->IsSelected() && image != NO_IMAGE )
{
// If it's selected, and there's an image, then we should
// take care to leave the area under the image painted in the
// background colour.
dc.DrawRectangle( item->GetX() + image_w - 2, item->GetY()+offset,
item->GetWidth() - image_w + 2, total_h-offset );
}
else
{
dc.DrawRectangle( item->GetX()-2, item->GetY()+offset,
item->GetWidth()+2, total_h-offset );
}
}
if ( image != NO_IMAGE )
{
dc.SetClippingRegion( item->GetX(), item->GetY(), image_w-2, total_h );
m_imageListNormal->Draw( image, dc,
item->GetX(),
item->GetY() +((total_h > image_h)?((total_h-image_h)/2):0),
wxIMAGELIST_DRAW_TRANSPARENT );
dc.DestroyClippingRegion();
}
dc.SetBackgroundMode(wxTRANSPARENT);
int extraH = (total_h > text_h) ? (total_h - text_h)/2 : 0;
dc.DrawText( item->GetText(),
(wxCoord)(image_w + item->GetX()),
(wxCoord)(item->GetY() + extraH));
// restore normal font
dc.SetFont( m_normalFont );
}
// Now y stands for the top of the item, whereas it used to stand for middle !
void wxGenericTreeCtrl::PaintLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &y )
{
int x = level*m_indent;
if (!HasFlag(wxTR_HIDE_ROOT))
{
x += m_indent;
}
else if (level == 0)
{
// always expand hidden root
int origY = y;
wxArrayGenericTreeItems& children = item->GetChildren();
int count = children.Count();
if (count > 0)
{
int n = 0, oldY;
do {
oldY = y;
PaintLevel(children[n], dc, 1, y);
} while (++n < count);
if (!HasFlag(wxTR_NO_LINES) && HasFlag(wxTR_LINES_AT_ROOT) && count > 0)
{
// draw line down to last child
origY += GetLineHeight(children[0])>>1;
oldY += GetLineHeight(children[n-1])>>1;
dc.DrawLine(3, origY, 3, oldY);
}
}
return;
}
item->SetX(x+m_spacing);
item->SetY(y);
int h = GetLineHeight(item);
int y_top = y;
int y_mid = y_top + (h>>1);
y += h;
int exposed_x = dc.LogicalToDeviceX(0);
int exposed_y = dc.LogicalToDeviceY(y_top);
if (IsExposed(exposed_x, exposed_y, 10000, h)) // 10000 = very much
{
wxPen *pen =
#ifndef __WXMAC__
// don't draw rect outline if we already have the
// background color under Mac
(item->IsSelected() && m_hasFocus) ? wxBLACK_PEN :
#endif // !__WXMAC__
wxTRANSPARENT_PEN;
wxColour colText;
if ( item->IsSelected() )
{
colText = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
}
else
{
wxTreeItemAttr *attr = item->GetAttributes();
if (attr && attr->HasTextColour())
colText = attr->GetTextColour();
else
colText = GetForegroundColour();
}
// prepare to draw
dc.SetTextForeground(colText);
dc.SetPen(*pen);
// draw
PaintItem(item, dc);
if (HasFlag(wxTR_ROW_LINES))
{
// if the background colour is white, choose a
// contrasting color for the lines
dc.SetPen(*((GetBackgroundColour() == *wxWHITE)
? wxMEDIUM_GREY_PEN : wxWHITE_PEN));
dc.DrawLine(0, y_top, 10000, y_top);
dc.DrawLine(0, y, 10000, y);
}
// restore DC objects
dc.SetBrush(*wxWHITE_BRUSH);
dc.SetPen(m_dottedPen);
dc.SetTextForeground(*wxBLACK);
if (item->HasPlus() && HasButtons()) // should the item show a button?
{
if (!HasFlag(wxTR_NO_LINES))
{
if (x > (signed)m_indent)
dc.DrawLine(x - m_indent, y_mid, x - 5, y_mid);
else if (HasFlag(wxTR_LINES_AT_ROOT))
dc.DrawLine(3, y_mid, x - 5, y_mid);
dc.DrawLine(x + 5, y_mid, x + m_spacing, y_mid);
}
if (m_imageListButtons != NULL)
{
// draw the image button here
int image_h = 0, image_w = 0, image = wxTreeItemIcon_Normal;
if (item->IsExpanded()) image = wxTreeItemIcon_Expanded;
if (item->IsSelected())
image += wxTreeItemIcon_Selected - wxTreeItemIcon_Normal;
m_imageListButtons->GetSize(image, image_w, image_h);
int xx = x - (image_w>>1);
int yy = y_mid - (image_h>>1);
dc.SetClippingRegion(xx, yy, image_w, image_h);
m_imageListButtons->Draw(image, dc, xx, yy,
wxIMAGELIST_DRAW_TRANSPARENT);
dc.DestroyClippingRegion();
}
else if (HasFlag(wxTR_TWIST_BUTTONS))
{
// draw the twisty button here
if (HasFlag(wxTR_AQUA_BUTTONS))
{
if (item->IsExpanded())
dc.DrawBitmap( *m_arrowDown, x-5, y_mid-6, TRUE );
else
dc.DrawBitmap( *m_arrowRight, x-5, y_mid-6, TRUE );
}
else
{
dc.SetBrush(*m_hilightBrush);
dc.SetPen(*wxBLACK_PEN);
wxPoint button[3];
if (item->IsExpanded())
{
button[0].x = x-5;
button[0].y = y_mid-2;
button[1].x = x+5;
button[1].y = y_mid-2;
button[2].x = x;
button[2].y = y_mid+3;
}
else
{
button[0].y = y_mid-5;
button[0].x = x-2;
button[1].y = y_mid+5;
button[1].x = x-2;
button[2].y = y_mid;
button[2].x = x+3;
}
dc.DrawPolygon(3, button);
dc.SetPen(m_dottedPen);
}
}
else // if (HasFlag(wxTR_HAS_BUTTONS))
{
// draw the plus sign here
dc.SetPen(*wxGREY_PEN);
dc.SetBrush(*wxWHITE_BRUSH);
dc.DrawRectangle(x-5, y_mid-4, 11, 9);
dc.SetPen(*wxBLACK_PEN);
dc.DrawLine(x-2, y_mid, x+3, y_mid);
if (!item->IsExpanded())
dc.DrawLine(x, y_mid-2, x, y_mid+3);
dc.SetPen(m_dottedPen);
}
}
else if (!HasFlag(wxTR_NO_LINES)) // no button; maybe a line?
{
// draw the horizontal line here
int x_start = x;
if (x > (signed)m_indent)
x_start -= m_indent;
else if (HasFlag(wxTR_LINES_AT_ROOT))
x_start = 3;
dc.DrawLine(x_start, y_mid, x + m_spacing, y_mid);
}
}
if (item->IsExpanded())
{
wxArrayGenericTreeItems& children = item->GetChildren();
int count = children.Count();
if (count > 0)
{
int n = 0, oldY;
++level;
do {
oldY = y;
PaintLevel(children[n], dc, level, y);
} while (++n < count);
if (!HasFlag(wxTR_NO_LINES) && count > 0)
{
// draw line down to last child
oldY += GetLineHeight(children[n-1])>>1;
if (HasButtons()) y_mid += 5;
dc.DrawLine(x, y_mid, x, oldY);
}
}
}
}
void wxGenericTreeCtrl::DrawDropEffect(wxGenericTreeItem *item)
{
if ( item )
{
if ( item->HasPlus() )
{
// it's a folder, indicate it by a border
DrawBorder(item);
}
else
{
// draw a line under the drop target because the item will be
// dropped there
DrawLine(item, TRUE /* below */);
}
SetCursor(wxCURSOR_BULLSEYE);
}
else
{
// can't drop here
SetCursor(wxCURSOR_NO_ENTRY);
}
}
void wxGenericTreeCtrl::DrawBorder(const wxTreeItemId &item)
{
wxCHECK_RET( item.IsOk(), _T("invalid item in wxGenericTreeCtrl::DrawLine") );
wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
wxClientDC dc(this);
PrepareDC( dc );
dc.SetLogicalFunction(wxINVERT);
dc.SetBrush(*wxTRANSPARENT_BRUSH);
int w = i->GetWidth() + 2;
int h = GetLineHeight(i) + 2;
dc.DrawRectangle( i->GetX() - 1, i->GetY() - 1, w, h);
}
void wxGenericTreeCtrl::DrawLine(const wxTreeItemId &item, bool below)
{
wxCHECK_RET( item.IsOk(), _T("invalid item in wxGenericTreeCtrl::DrawLine") );
wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
wxClientDC dc(this);
PrepareDC( dc );
dc.SetLogicalFunction(wxINVERT);
int x = i->GetX(),
y = i->GetY();
if ( below )
{
y += GetLineHeight(i) - 1;
}
dc.DrawLine( x, y, x + i->GetWidth(), y);
}
// -----------------------------------------------------------------------------
// wxWindows callbacks
// -----------------------------------------------------------------------------
void wxGenericTreeCtrl::OnPaint( wxPaintEvent &WXUNUSED(event) )
{
wxPaintDC dc(this);
PrepareDC( dc );
if ( !m_anchor)
return;
dc.SetFont( m_normalFont );
dc.SetPen( m_dottedPen );
// this is now done dynamically
//if(GetImageList() == NULL)
// m_lineHeight = (int)(dc.GetCharHeight() + 4);
int y = 2;
PaintLevel( m_anchor, dc, 0, y );
}
void wxGenericTreeCtrl::OnSetFocus( wxFocusEvent &event )
{
m_hasFocus = TRUE;
RefreshSelected();
event.Skip();
}
void wxGenericTreeCtrl::OnKillFocus( wxFocusEvent &event )
{
m_hasFocus = FALSE;
RefreshSelected();
event.Skip();
}
void wxGenericTreeCtrl::OnChar( wxKeyEvent &event )
{
wxTreeEvent te( wxEVT_COMMAND_TREE_KEY_DOWN, GetId() );
te.m_evtKey = event;
te.SetEventObject( this );
if ( GetEventHandler()->ProcessEvent( te ) )
{
// intercepted by the user code
return;
}
if ( (m_current == 0) || (m_key_current == 0) )
{
event.Skip();
return;
}
// how should the selection work for this event?
bool is_multiple, extended_select, unselect_others;
EventFlagsToSelType(GetWindowStyleFlag(),
event.ShiftDown(),
event.ControlDown(),
is_multiple, extended_select, unselect_others);
// + : Expand
// - : Collaspe
// * : Expand all/Collapse all
// ' ' | return : activate
// up : go up (not last children!)
// down : go down
// left : go to parent
// right : open if parent and go next
// home : go to root
// end : go to last item without opening parents
// alnum : start or continue searching for the item with this prefix
int keyCode = event.KeyCode();
switch ( keyCode )
{
case '+':
case WXK_ADD:
if (m_current->HasPlus() && !IsExpanded(m_current))
{
Expand(m_current);
}
break;
case '*':
case WXK_MULTIPLY:
if ( !IsExpanded(m_current) )
{
// expand all
ExpandAll(m_current);
break;
}
//else: fall through to Collapse() it
case '-':
case WXK_SUBTRACT:
if (IsExpanded(m_current))
{
Collapse(m_current);
}
break;
case ' ':
case WXK_RETURN:
if ( !event.HasModifiers() )
{
wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_ACTIVATED, GetId() );
event.m_item = (long) m_current;
event.SetEventObject( this );
GetEventHandler()->ProcessEvent( event );
}
// in any case, also generate the normal key event for this key,
// even if we generated the ACTIVATED event above: this is what
// wxMSW does and it makes sense because you might not want to
// process ACTIVATED event at all and handle Space and Return
// directly (and differently) which would be impossible otherwise
event.Skip();
break;
// up goes to the previous sibling or to the last
// of its children if it's expanded
case WXK_UP:
{
wxTreeItemId prev = GetPrevSibling( m_key_current );
if (!prev)
{
prev = GetParent( m_key_current );
if ((prev == GetRootItem()) && HasFlag(wxTR_HIDE_ROOT))
{
break; // don't go to root if it is hidden
}
if (prev)
{
long cookie = 0;
wxTreeItemId current = m_key_current;
// TODO: Huh? If we get here, we'd better be the first child of our parent. How else could it be?
if (current == GetFirstChild( prev, cookie ))
{
// otherwise we return to where we came from
SelectItem( prev, unselect_others, extended_select );
m_key_current= (wxGenericTreeItem*) prev.m_pItem;
break;
}
}
}
if (prev)
{
while ( IsExpanded(prev) && HasChildren(prev) )
{
wxTreeItemId child = GetLastChild(prev);
if ( child )
{
prev = child;
}
}
SelectItem( prev, unselect_others, extended_select );
m_key_current=(wxGenericTreeItem*) prev.m_pItem;
}
}
break;
// left arrow goes to the parent
case WXK_LEFT:
{
wxTreeItemId prev = GetParent( m_current );
if ((prev == GetRootItem()) && HasFlag(wxTR_HIDE_ROOT))
{
// don't go to root if it is hidden
prev = GetPrevSibling( m_current );
}
if (prev)
{
SelectItem( prev, unselect_others, extended_select );
}
}
break;
case WXK_RIGHT:
// this works the same as the down arrow except that we
// also expand the item if it wasn't expanded yet
Expand(m_current);
// fall through
case WXK_DOWN:
{
if (IsExpanded(m_key_current) && HasChildren(m_key_current))
{
long cookie = 0;
wxTreeItemId child = GetFirstChild( m_key_current, cookie );
SelectItem( child, unselect_others, extended_select );
m_key_current=(wxGenericTreeItem*) child.m_pItem;
}
else
{
wxTreeItemId next = GetNextSibling( m_key_current );
if (!next)
{
wxTreeItemId current = m_key_current;
while (current && !next)
{
current = GetParent( current );
if (current) next = GetNextSibling( current );
}
}
if (next)
{
SelectItem( next, unselect_others, extended_select );
m_key_current=(wxGenericTreeItem*) next.m_pItem;
}
}
}
break;
// <End> selects the last visible tree item
case WXK_END:
{
wxTreeItemId last = GetRootItem();
while ( last.IsOk() && IsExpanded(last) )
{
wxTreeItemId lastChild = GetLastChild(last);
// it may happen if the item was expanded but then all of
// its children have been deleted - so IsExpanded() returned
// TRUE, but GetLastChild() returned invalid item
if ( !lastChild )
break;
last = lastChild;
}
if ( last.IsOk() )
{
SelectItem( last, unselect_others, extended_select );
}
}
break;
// <Home> selects the root item
case WXK_HOME:
{
wxTreeItemId prev = GetRootItem();
if (!prev)
break;
if ( HasFlag(wxTR_HIDE_ROOT) )
{
long dummy;
prev = GetFirstChild(prev, dummy);
if (!prev)
break;
}
SelectItem( prev, unselect_others, extended_select );
}
break;
default:
// do not use wxIsalnum() here
if ( !event.HasModifiers() &&
((keyCode >= '0' && keyCode <= '9') ||
(keyCode >= 'a' && keyCode <= 'z') ||
(keyCode >= 'A' && keyCode <= 'Z' )))
{
// find the next item starting with the given prefix
char ch = (char)keyCode;
wxTreeItemId id = FindItem(m_current, m_findPrefix + (wxChar)ch);
if ( !id.IsOk() )
{
// no such item
break;
}
SelectItem(id);
m_findPrefix += ch;
// also start the timer to reset the current prefix if the user
// doesn't press any more alnum keys soon -- we wouldn't want
// to use this prefix for a new item search
if ( !m_findTimer )
{
m_findTimer = new wxTreeFindTimer(this);
}
m_findTimer->Start(wxTreeFindTimer::DELAY, wxTIMER_ONE_SHOT);
}
else
{
event.Skip();
}
}
}
wxTreeItemId wxGenericTreeCtrl::HitTest(const wxPoint& point, int& flags)
{
// JACS: removed wxYieldIfNeeded() because it can cause the window
// to be deleted from under us if a close window event is pending
int w, h;
GetSize(&w, &h);
flags=0;
if (point.x<0) flags |= wxTREE_HITTEST_TOLEFT;
if (point.x>w) flags |= wxTREE_HITTEST_TORIGHT;
if (point.y<0) flags |= wxTREE_HITTEST_ABOVE;
if (point.y>h) flags |= wxTREE_HITTEST_BELOW;
if (flags) return wxTreeItemId();
if (m_anchor == NULL)
{
flags = wxTREE_HITTEST_NOWHERE;
return wxTreeItemId();
}
wxGenericTreeItem *hit = m_anchor->HitTest(CalcUnscrolledPosition(point),
this, flags, 0);
if (hit == NULL)
{
flags = wxTREE_HITTEST_NOWHERE;
return wxTreeItemId();
}
return hit;
}
// get the bounding rectangle of the item (or of its label only)
bool wxGenericTreeCtrl::GetBoundingRect(const wxTreeItemId& item,
wxRect& rect,
bool WXUNUSED(textOnly)) const
{
wxCHECK_MSG( item.IsOk(), FALSE, _T("invalid item in wxGenericTreeCtrl::GetBoundingRect") );
wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
int startX, startY;
GetViewStart(& startX, & startY);
rect.x = i->GetX() - startX*PIXELS_PER_UNIT;
rect.y = i->GetY() - startY*PIXELS_PER_UNIT;
rect.width = i->GetWidth();
//rect.height = i->GetHeight();
rect.height = GetLineHeight(i);
return TRUE;
}
void wxGenericTreeCtrl::Edit( const wxTreeItemId& item )
{
wxCHECK_RET( item.IsOk(), _T("can't edit an invalid item") );
wxGenericTreeItem *itemEdit = (wxGenericTreeItem *)item.m_pItem;
wxTreeEvent te( wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT, GetId() );
te.m_item = (long) itemEdit;
te.SetEventObject( this );
if ( GetEventHandler()->ProcessEvent( te ) && !te.IsAllowed() )
{
// vetoed by user
return;
}
// We have to call this here because the label in
// question might just have been added and no screen
// update taken place.
if ( m_dirty )
wxYieldIfNeeded();
wxTreeTextCtrl *text = new wxTreeTextCtrl(this, itemEdit);
text->SetFocus();
}
bool wxGenericTreeCtrl::OnRenameAccept(wxGenericTreeItem *item,
const wxString& value)
{
wxTreeEvent le( wxEVT_COMMAND_TREE_END_LABEL_EDIT, GetId() );
le.m_item = (long) item;
le.SetEventObject( this );
le.m_label = value;
le.m_editCancelled = FALSE;
return !GetEventHandler()->ProcessEvent( le ) || le.IsAllowed();
}
void wxGenericTreeCtrl::OnRenameCancelled(wxGenericTreeItem *item)
{
// let owner know that the edit was cancelled
wxTreeEvent le( wxEVT_COMMAND_TREE_END_LABEL_EDIT, GetId() );
le.m_item = (long) item;
le.SetEventObject( this );
le.m_label = wxEmptyString;
le.m_editCancelled = FALSE;
GetEventHandler()->ProcessEvent( le );
}
void wxGenericTreeCtrl::OnRenameTimer()
{
Edit( m_current );
}
void wxGenericTreeCtrl::OnMouse( wxMouseEvent &event )
{
if ( !m_anchor ) return;
// we process left mouse up event (enables in-place edit), right down
// (pass to the user code), left dbl click (activate item) and
// dragging/moving events for items drag-and-drop
if ( !(event.LeftDown() ||
event.LeftUp() ||
event.RightDown() ||
event.LeftDClick() ||
event.Dragging() ||
((event.Moving() || event.RightUp()) && m_isDragging)) )
{
event.Skip();
return;
}
wxPoint pt = CalcUnscrolledPosition(event.GetPosition());
int flags = 0;
wxGenericTreeItem *item = m_anchor->HitTest(pt, this, flags, 0);
if ( event.Dragging() && !m_isDragging )
{
if (m_dragCount == 0)
m_dragStart = pt;
m_dragCount++;
if (m_dragCount != 3)
{
// wait until user drags a bit further...
return;
}
wxEventType command = event.RightIsDown()
? wxEVT_COMMAND_TREE_BEGIN_RDRAG
: wxEVT_COMMAND_TREE_BEGIN_DRAG;
wxTreeEvent nevent( command, GetId() );
nevent.m_item = (long) m_current;
nevent.SetEventObject(this);
// by default the dragging is not supported, the user code must
// explicitly allow the event for it to take place
nevent.Veto();
if ( GetEventHandler()->ProcessEvent(nevent) && nevent.IsAllowed() )
{
// we're going to drag this item
m_isDragging = TRUE;
// remember the old cursor because we will change it while
// dragging
m_oldCursor = m_cursor;
// in a single selection control, hide the selection temporarily
if ( !(GetWindowStyleFlag() & wxTR_MULTIPLE) )
{
m_oldSelection = (wxGenericTreeItem*) GetSelection().m_pItem;
if ( m_oldSelection )
{
m_oldSelection->SetHilight(FALSE);
RefreshLine(m_oldSelection);
}
}
CaptureMouse();
}
}
else if ( event.Moving() )
{
if ( item != m_dropTarget )
{
// unhighlight the previous drop target
DrawDropEffect(m_dropTarget);
m_dropTarget = item;
// highlight the current drop target if any
DrawDropEffect(m_dropTarget);
wxYieldIfNeeded();
}
}
else if ( (event.LeftUp() || event.RightUp()) && m_isDragging )
{
// erase the highlighting
DrawDropEffect(m_dropTarget);
if ( m_oldSelection )
{
m_oldSelection->SetHilight(TRUE);
RefreshLine(m_oldSelection);
m_oldSelection = (wxGenericTreeItem *)NULL;
}
// generate the drag end event
wxTreeEvent event(wxEVT_COMMAND_TREE_END_DRAG, GetId());
event.m_item = (long) item;
event.m_pointDrag = pt;
event.SetEventObject(this);
(void)GetEventHandler()->ProcessEvent(event);
m_isDragging = FALSE;
m_dropTarget = (wxGenericTreeItem *)NULL;
ReleaseMouse();
SetCursor(m_oldCursor);
wxYieldIfNeeded();
}
else
{
// here we process only the messages which happen on tree items
m_dragCount = 0;
if (item == NULL) return; /* we hit the blank area */
if ( event.RightDown() )
{
wxTreeEvent nevent(wxEVT_COMMAND_TREE_ITEM_RIGHT_CLICK, GetId());
nevent.m_item = (long) item;
nevent.m_pointDrag = CalcScrolledPosition(pt);
nevent.SetEventObject(this);
GetEventHandler()->ProcessEvent(nevent);
}
else if ( event.LeftUp() )
{
if ( m_lastOnSame )
{
if ( (item == m_current) &&
(flags & wxTREE_HITTEST_ONITEMLABEL) &&
HasFlag(wxTR_EDIT_LABELS) )
{
if ( m_renameTimer )
{
if ( m_renameTimer->IsRunning() )
m_renameTimer->Stop();
}
else
{
m_renameTimer = new wxTreeRenameTimer( this );
}
m_renameTimer->Start( wxTreeRenameTimer::DELAY, TRUE );
}
m_lastOnSame = FALSE;
}
}
else // !RightDown() && !LeftUp() ==> LeftDown() || LeftDClick()
{
if ( event.LeftDown() )
{
m_lastOnSame = item == m_current;
}
if ( flags & wxTREE_HITTEST_ONITEMBUTTON )
{
// only toggle the item for a single click, double click on
// the button doesn't do anything (it toggles the item twice)
if ( event.LeftDown() )
{
Toggle( item );
}
// don't select the item if the button was clicked
return;
}
// how should the selection work for this event?
bool is_multiple, extended_select, unselect_others;
EventFlagsToSelType(GetWindowStyleFlag(),
event.ShiftDown(),
event.ControlDown(),
is_multiple, extended_select, unselect_others);
SelectItem(item, unselect_others, extended_select);
// For some reason, Windows isn't recognizing a left double-click,
// so we need to simulate it here. Allow 200 milliseconds for now.
if ( event.LeftDClick() )
{
// double clicking should not start editing the item label
if ( m_renameTimer )
m_renameTimer->Stop();
m_lastOnSame = FALSE;
// send activate event first
wxTreeEvent nevent( wxEVT_COMMAND_TREE_ITEM_ACTIVATED, GetId() );
nevent.m_item = (long) item;
nevent.m_pointDrag = CalcScrolledPosition(pt);
nevent.SetEventObject( this );
if ( !GetEventHandler()->ProcessEvent( nevent ) )
{
// if the user code didn't process the activate event,
// handle it ourselves by toggling the item when it is
// double clicked
if ( item->HasPlus() )
{
Toggle(item);
}
}
}
}
}
}
void wxGenericTreeCtrl::OnIdle( wxIdleEvent &WXUNUSED(event) )
{
/* after all changes have been done to the tree control,
* we actually redraw the tree when everything is over */
if (!m_dirty) return;
m_dirty = FALSE;
CalculatePositions();
Refresh();
AdjustMyScrollbars();
}
void wxGenericTreeCtrl::CalculateSize( wxGenericTreeItem *item, wxDC &dc )
{
wxCoord text_w = 0;
wxCoord text_h = 0;
wxTreeItemAttr *attr = item->GetAttributes();
if ( attr && attr->HasFont() )
dc.SetFont(attr->GetFont());
else if ( item->IsBold() )
dc.SetFont(m_boldFont);
dc.GetTextExtent( item->GetText(), &text_w, &text_h );
text_h+=2;
// restore normal font
dc.SetFont( m_normalFont );
int image_h = 0;
int image_w = 0;
int image = item->GetCurrentImage();
if ( image != NO_IMAGE )
{
if ( m_imageListNormal )
{
m_imageListNormal->GetSize( image, image_w, image_h );
image_w += 4;
}
}
int total_h = (image_h > text_h) ? image_h : text_h;
if (total_h < 30)
total_h += 2; // at least 2 pixels
else
total_h += total_h/10; // otherwise 10% extra spacing
item->SetHeight(total_h);
if (total_h>m_lineHeight)
m_lineHeight=total_h;
item->SetWidth(image_w+text_w+2);
}
// -----------------------------------------------------------------------------
// for developper : y is now the top of the level
// not the middle of it !
void wxGenericTreeCtrl::CalculateLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &y )
{
int x = level*m_indent;
if (!HasFlag(wxTR_HIDE_ROOT))
{
x += m_indent;
}
else if (level == 0)
{
// a hidden root is not evaluated, but its
// children are always calculated
goto Recurse;
}
CalculateSize( item, dc );
// set its position
item->SetX( x+m_spacing );
item->SetY( y );
y += GetLineHeight(item);
if ( !item->IsExpanded() )
{
// we don't need to calculate collapsed branches
return;
}
Recurse:
wxArrayGenericTreeItems& children = item->GetChildren();
size_t n, count = children.Count();
++level;
for (n = 0; n < count; ++n )
CalculateLevel( children[n], dc, level, y ); // recurse
}
void wxGenericTreeCtrl::CalculatePositions()
{
if ( !m_anchor ) return;
wxClientDC dc(this);
PrepareDC( dc );
dc.SetFont( m_normalFont );
dc.SetPen( m_dottedPen );
//if(GetImageList() == NULL)
// m_lineHeight = (int)(dc.GetCharHeight() + 4);
int y = 2;
CalculateLevel( m_anchor, dc, 0, y ); // start recursion
}
void wxGenericTreeCtrl::RefreshSubtree(wxGenericTreeItem *item)
{
if (m_dirty) return;
wxSize client = GetClientSize();
wxRect rect;
CalcScrolledPosition(0, item->GetY(), NULL, &rect.y);
rect.width = client.x;
rect.height = client.y;
Refresh(TRUE, &rect);
AdjustMyScrollbars();
}
void wxGenericTreeCtrl::RefreshLine( wxGenericTreeItem *item )
{
if (m_dirty) return;
wxRect rect;
CalcScrolledPosition(0, item->GetY(), NULL, &rect.y);
rect.width = GetClientSize().x;
rect.height = GetLineHeight(item); //dc.GetCharHeight() + 6;
Refresh(TRUE, &rect);
}
void wxGenericTreeCtrl::RefreshSelected()
{
// TODO: this is awfully inefficient, we should keep the list of all
// selected items internally, should be much faster
if ( m_anchor )
RefreshSelectedUnder(m_anchor);
}
void wxGenericTreeCtrl::RefreshSelectedUnder(wxGenericTreeItem *item)
{
if ( item->IsSelected() )
RefreshLine(item);
const wxArrayGenericTreeItems& children = item->GetChildren();
size_t count = children.GetCount();
for ( size_t n = 0; n < count; n++ )
{
RefreshSelectedUnder(children[n]);
}
}
// ----------------------------------------------------------------------------
// changing colours: we need to refresh the tree control
// ----------------------------------------------------------------------------
bool wxGenericTreeCtrl::SetBackgroundColour(const wxColour& colour)
{
if ( !wxWindow::SetBackgroundColour(colour) )
return FALSE;
Refresh();
return TRUE;
}
bool wxGenericTreeCtrl::SetForegroundColour(const wxColour& colour)
{
if ( !wxWindow::SetForegroundColour(colour) )
return FALSE;
Refresh();
return TRUE;
}
#endif // wxUSE_TREECTRL