// implementation
// ============================================================================
+// time in milliseconds before partial completion buffer drops
+#define wxODCB_PARTIAL_COMPLETION_TIME 1000
// ----------------------------------------------------------------------------
// wxVListBoxComboPopup is a wxVListBox customized to act as a popup control
void wxVListBoxComboPopup::Init()
{
m_widestWidth = 0;
- m_avgCharWidth = 0;
- m_baseImageWidth = 0;
+ m_widestItem = -1;
+ m_widthsDirty = false;
+ m_findWidest = false;
m_itemHeight = 0;
m_value = -1;
m_itemHover = -1;
m_clientDataItemsType = wxClientData_None;
+ m_partialCompletionString = wxEmptyString;
}
bool wxVListBoxComboPopup::Create(wxWindow* parent)
{
if ( !(m_combo->GetWindowStyle() & wxODCB_STD_CONTROL_PAINT) )
{
- OnDrawBg(dc,rect,m_value,wxODCB_PAINTING_CONTROL);
+ int flags = wxODCB_PAINTING_CONTROL;
+
+ if ( m_combo->ShouldDrawFocus() )
+ flags |= wxODCB_PAINTING_SELECTED;
+
+ OnDrawBg(dc, rect, m_value, flags);
+
if ( m_value >= 0 )
{
OnDrawItem(dc,rect,m_value,wxODCB_PAINTING_CONTROL);
wxASSERT_MSG( combo->IsKindOf(CLASSINFO(wxOwnerDrawnComboBox)),
wxT("you must subclass wxVListBoxComboPopup for drawing and measuring methods") );
+ if ( IsCurrent((size_t)item) && !(flags & wxODCB_PAINTING_CONTROL) )
+ flags |= wxODCB_PAINTING_SELECTED;
+
combo->OnDrawBackground(dc,rect,item,flags);
}
void wxVListBoxComboPopup::DismissWithEvent()
{
+ StopPartialCompletion();
+
int selection = wxVListBox::GetSelection();
Dismiss();
m_value = selection;
if ( valStr != m_combo->GetValue() )
- m_combo->SetValue(valStr);
+ m_combo->SetValueWithEvent(valStr);
SendComboBoxEvent(selection);
}
}
// returns true if key was consumed
-bool wxVListBoxComboPopup::HandleKey( int keycode, bool saturate )
+bool wxVListBoxComboPopup::HandleKey( int keycode, bool saturate, wxChar unicode )
{
int value = m_value;
int itemCount = GetCount();
+ int comboStyle = m_combo->GetWindowStyle();
+
+ // this is the character equivalent of the code
+ wxChar keychar=0;
+ if ((keycode >= WXK_SPACE) && (keycode <=255) && (keycode != WXK_DELETE) && wxIsprint(keycode))
+ {
+ keychar = (wxChar)keycode;
+ }
+ else if (unicode>0)
+ {
+ keychar = unicode;
+ }
if ( keycode == WXK_DOWN || keycode == WXK_RIGHT )
{
value++;
+ StopPartialCompletion();
}
else if ( keycode == WXK_UP || keycode == WXK_LEFT )
{
value--;
+ StopPartialCompletion();
}
else if ( keycode == WXK_PAGEDOWN )
{
value+=10;
+ StopPartialCompletion();
}
else if ( keycode == WXK_PAGEUP )
{
value-=10;
+ StopPartialCompletion();
+ }
+ else if ( comboStyle & wxCB_READONLY )
+ {
+ // Try partial completion
+
+ // find the new partial completion string
+#if wxUSE_TIMER
+ if (m_partialCompletionTimer.IsRunning())
+ m_partialCompletionString+=wxString(keychar);
+ else
+#endif // wxUSE_TIMER
+ m_partialCompletionString=wxString(keychar);
+
+ // now search through the values to see if this is found
+ int found = -1;
+ unsigned int length=m_partialCompletionString.length();
+ int i;
+ for (i=0; i<itemCount; i++)
+ {
+ wxString item=GetString(i);
+ if (( item.length() >= length) && (! m_partialCompletionString.CmpNoCase(item.Left(length))))
+ {
+ found=i;
+ break;
+ }
+ }
+
+ if (found<0)
+ {
+ StopPartialCompletion();
+ ::wxBell();
+ return true; // to stop the first value being set
+ }
+ else
+ {
+ value=i;
+#if wxUSE_TIMER
+ m_partialCompletionTimer.Start(wxODCB_PARTIAL_COMPLETION_TIME, true);
+#endif // wxUSE_TIMER
+ }
}
else
return false;
return true;
}
+// stop partial completion
+void wxVListBoxComboPopup::StopPartialCompletion()
+{
+ m_partialCompletionString = wxEmptyString;
+#if wxUSE_TIMER
+ m_partialCompletionTimer.Stop();
+#endif // wxUSE_TIMER
+}
+
void wxVListBoxComboPopup::OnComboDoubleClick()
{
// Cycle on dclick (disable saturation to allow true cycling).
void wxVListBoxComboPopup::OnComboKeyEvent( wxKeyEvent& event )
{
// Saturated key movement on
- if ( !HandleKey(event.GetKeyCode(),true) )
+ if ( !HandleKey(event.GetKeyCode(),true,
+#if wxUSE_UNICODE
+ event.GetUnicodeKey()
+#else
+ 0
+#endif
+ ) )
event.Skip();
}
void wxVListBoxComboPopup::OnMouseMove(wxMouseEvent& event)
{
+ event.Skip();
+
// Move selection to cursor if it is inside the popup
- int itemHere = GetItemAtPosition(event.GetPosition());
- if ( itemHere >= 0 )
- wxVListBox::SetSelection(itemHere);
- event.Skip();
+ int y = event.GetPosition().y;
+ int fromBottom = GetClientSize().y - y;
+
+ // Since in any case we need to find out if the last item is only
+ // partially visible, we might just as well replicate the HitTest
+ // loop here.
+ const size_t lineMax = GetVisibleEnd();
+ for ( size_t line = GetVisibleBegin(); line < lineMax; line++ )
+ {
+ y -= OnGetLineHeight(line);
+ if ( y < 0 )
+ {
+ // Only change selection if item is fully visible
+ if ( (y + fromBottom) >= 0 )
+ {
+ wxVListBox::SetSelection((int)line);
+ return;
+ }
+ }
+ }
}
void wxVListBoxComboPopup::OnLeftClick(wxMouseEvent& WXUNUSED(event))
void wxVListBoxComboPopup::OnKey(wxKeyEvent& event)
{
+ // Hide popup if certain key or key combination was pressed
+ if ( m_combo->IsKeyPopupToggle(event) )
+ {
+ StopPartialCompletion();
+ Dismiss();
+ }
+ else if ( event.AltDown() )
+ {
+ // On both wxGTK and wxMSW, pressing Alt down seems to
+ // completely freeze things in popup (ie. arrow keys and
+ // enter won't work).
+ return;
+ }
// Select item if ENTER is pressed
- if ( event.GetKeyCode() == WXK_RETURN || event.GetKeyCode() == WXK_NUMPAD_ENTER )
+ else if ( event.GetKeyCode() == WXK_RETURN || event.GetKeyCode() == WXK_NUMPAD_ENTER )
{
DismissWithEvent();
}
- // Hide popup if ESC is pressed
- else if ( event.GetKeyCode() == WXK_ESCAPE )
- Dismiss();
else
- event.Skip();
-}
-
-void wxVListBoxComboPopup::CheckWidth( int pos )
-{
- wxCoord x = OnMeasureItemWidth(pos);
-
- if ( x < 0 )
{
- if ( !m_useFont.Ok() )
- m_useFont = m_combo->GetFont();
-
- wxCoord y;
- m_combo->GetTextExtent(m_strings[pos], &x, &y, 0, 0, &m_useFont);
- x += 4;
- }
-
- if ( m_widestWidth < x )
- {
- m_widestWidth = x;
+ int comboStyle = m_combo->GetWindowStyle();
+ int keycode = event.GetKeyCode();
+ // Process partial completion key codes here, but not the arrow keys as the base class will do that for us
+ if ((comboStyle & wxCB_READONLY) &&
+ (keycode >= WXK_SPACE) && (keycode <=255) && (keycode != WXK_DELETE) && wxIsprint(keycode))
+ {
+ OnComboKeyEvent(event);
+ SetSelection(m_value); // ensure the highlight bar moves
+ }
+ else
+ event.Skip();
}
}
}
m_strings.Insert(item,pos);
+ m_widths.Insert(-1,pos);
+ m_widthsDirty = true;
if ( IsCreated() )
wxVListBox::SetItemCount( wxVListBox::GetItemCount()+1 );
-
- // Calculate width
- CheckWidth(pos);
}
int wxVListBoxComboPopup::Append(const wxString& item)
wxASSERT(m_combo);
m_strings.Empty();
+ m_widths.Empty();
+
+ m_widestWidth = 0;
+ m_widestItem = -1;
ClearClientDatas();
m_clientDatas.SetCount(n+1,NULL);
m_clientDatas[n] = clientData;
+
+ ItemWidthChanged(n);
}
void* wxVListBoxComboPopup::GetItemClientData(unsigned int n) const
}
m_strings.RemoveAt(item);
+ m_widths.RemoveAt(item);
+
+ if ( (int)item == m_widestItem )
+ m_findWidest = true;
+
+ int sel = GetSelection();
if ( IsCreated() )
wxVListBox::SetItemCount( wxVListBox::GetItemCount()-1 );
+
+ // Fix selection
+ if ( (int)item < sel )
+ SetSelection(sel-1);
+ else if ( (int)item == sel )
+ SetSelection(wxNOT_FOUND);
}
int wxVListBoxComboPopup::FindString(const wxString& s, bool bCase) const
void wxVListBoxComboPopup::SetString( int item, const wxString& str )
{
m_strings[item] = str;
+ ItemWidthChanged(item);
}
wxString wxVListBoxComboPopup::GetStringValue() const
wxVListBox::SetSelection(index);
}
+void wxVListBoxComboPopup::CalcWidths()
+{
+ bool doFindWidest = m_findWidest;
+
+ // Measure items with dirty width.
+ if ( m_widthsDirty )
+ {
+ unsigned int i;
+ unsigned int n = m_widths.GetCount();
+ int dirtyHandled = 0;
+ wxArrayInt& widths = m_widths;
+
+ // I think using wxDC::GetTextExtent is faster than
+ // wxWindow::GetTextExtent (assuming same dc is used
+ // for all calls, as we do here).
+ wxClientDC dc(m_combo);
+ dc.SetFont(m_useFont);
+
+ for ( i=0; i<n; i++ )
+ {
+ if ( widths[i] < 0 )
+ {
+ wxCoord x = OnMeasureItemWidth(i);
+
+ if ( x < 0 )
+ {
+ const wxString& text = m_strings[i];
+
+ // To make sure performance won't suck in extreme scenarios,
+ // we'll estimate length after some arbitrary number of items
+ // have been checked precily.
+ if ( dirtyHandled < 1024 )
+ {
+ wxCoord y;
+ dc.GetTextExtent(text, &x, &y, 0, 0);
+ x += 4;
+ }
+ else
+ {
+ x = text.length() * (dc.GetCharWidth()+1);
+ }
+ }
+
+ widths[i] = x;
+
+ if ( x >= m_widestWidth )
+ {
+ m_widestWidth = x;
+ m_widestItem = (int)i;
+ }
+ else if ( (int)i == m_widestItem )
+ {
+ // Width of previously widest item has been decreased, so
+ // we'll have to check all to find current widest item.
+ doFindWidest = true;
+ }
+
+ dirtyHandled++;
+ }
+ }
+
+ m_widthsDirty = false;
+ }
+
+ if ( doFindWidest )
+ {
+ unsigned int i;
+ unsigned int n = m_widths.GetCount();
+
+ int bestWidth = -1;
+ int bestIndex = -1;
+
+ for ( i=0; i<n; i++ )
+ {
+ int w = m_widths[i];
+ if ( w > bestWidth )
+ {
+ bestIndex = (int)i;
+ bestWidth = w;
+ }
+ }
+
+ m_widestWidth = bestWidth;
+ m_widestItem = bestIndex;
+
+ m_findWidest = false;
+ }
+}
+
wxSize wxVListBoxComboPopup::GetAdjustedSize( int minWidth, int prefHeight, int maxHeight )
{
int height = 250;
+ maxHeight -= 2; // Must take borders into account
+
if ( m_strings.GetCount() )
{
if ( prefHeight > 0 )
// NB: Calculations that take variable height into account
// are unnecessary.
int fih = GetLineHeight(0);
- int shown = height/fih;
- height = shown * fih;
+ height -= height % fih;
}
}
else
height = 50;
+ CalcWidths();
+
// Take scrollbar into account in width calculations
int widestWidth = m_widestWidth + wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
return wxSize(minWidth > widestWidth ? minWidth : widestWidth,
{
const wxString& item = choices.Item(i);
m_strings.Add(item);
- CheckWidth(i);
}
+ m_widths.SetCount(n,-1);
+ m_widthsDirty = true;
+
if ( IsCreated() )
wxVListBox::SetItemCount(n);
void wxOwnerDrawnComboBox::Init()
{
- m_popupInterface = NULL;
}
bool wxOwnerDrawnComboBox::Create(wxWindow *parent,
wxOwnerDrawnComboBox::~wxOwnerDrawnComboBox()
{
if ( m_popupInterface )
- m_popupInterface->ClearClientDatas();
+ GetVListBoxComboPopup()->ClearClientDatas();
}
void wxOwnerDrawnComboBox::DoSetPopupControl(wxComboPopup* popup)
wxComboCtrl::DoSetPopupControl(popup);
wxASSERT(popup);
- m_popupInterface = (wxVListBoxComboPopup*) popup;
// Add initial choices to the wxVListBox
- if ( !m_popupInterface->GetCount() )
+ if ( !GetVListBoxComboPopup()->GetCount() )
{
- //m_popupInterface->Populate(m_initChs.GetCount(),m_initChs.GetStrings());
- m_popupInterface->Populate(m_initChs);
+ GetVListBoxComboPopup()->Populate(m_initChs);
m_initChs.Clear();
}
}
{
EnsurePopupControl();
- m_popupInterface->Clear();
+ GetVListBoxComboPopup()->Clear();
SetValue(wxEmptyString);
}
if ( GetSelection() == (int) n )
SetValue(wxEmptyString);
- m_popupInterface->Delete(n);
+ GetVListBoxComboPopup()->Delete(n);
}
unsigned int wxOwnerDrawnComboBox::GetCount() const
if ( !m_popupInterface )
return m_initChs.GetCount();
- return m_popupInterface->GetCount();
+ return GetVListBoxComboPopup()->GetCount();
}
wxString wxOwnerDrawnComboBox::GetString(unsigned int n) const
if ( !m_popupInterface )
return m_initChs.Item(n);
- return m_popupInterface->GetString(n);
+ return GetVListBoxComboPopup()->GetString(n);
}
void wxOwnerDrawnComboBox::SetString(unsigned int n, const wxString& s)
wxCHECK_RET( IsValid(n), _T("invalid index in wxOwnerDrawnComboBox::SetString") );
- m_popupInterface->SetString(n,s);
+ GetVListBoxComboPopup()->SetString(n,s);
}
int wxOwnerDrawnComboBox::FindString(const wxString& s, bool bCase) const
if ( !m_popupInterface )
return m_initChs.Index(s, bCase);
- return m_popupInterface->FindString(s, bCase);
+ return GetVListBoxComboPopup()->FindString(s, bCase);
}
void wxOwnerDrawnComboBox::Select(int n)
wxCHECK_RET( (n == wxNOT_FOUND) || IsValid(n), _T("invalid index in wxOwnerDrawnComboBox::Select") );
- m_popupInterface->SetSelection(n);
+ GetVListBoxComboPopup()->SetSelection(n);
wxString str;
if ( n >= 0 )
- str = m_popupInterface->GetString(n);
+ str = GetVListBoxComboPopup()->GetString(n);
// Refresh text portion in control
if ( m_text )
if ( !m_popupInterface )
return m_initChs.Index(m_valueString);
- return m_popupInterface->GetSelection();
+ return GetVListBoxComboPopup()->GetSelection();
}
int wxOwnerDrawnComboBox::DoAppend(const wxString& item)
{
EnsurePopupControl();
wxASSERT(m_popupInterface);
- return m_popupInterface->Append(item);
+
+ return GetVListBoxComboPopup()->Append(item);
}
int wxOwnerDrawnComboBox::DoInsert(const wxString& item, unsigned int pos)
wxCHECK_MSG(!(GetWindowStyle() & wxCB_SORT), -1, wxT("can't insert into sorted list"));
wxCHECK_MSG(IsValidInsert(pos), -1, wxT("invalid index"));
- m_popupInterface->Insert(item,pos);
+ GetVListBoxComboPopup()->Insert(item,pos);
return pos;
}
void wxOwnerDrawnComboBox::DoSetItemClientData(unsigned int n, void* clientData)
{
EnsurePopupControl();
- m_popupInterface->SetItemClientData(n,clientData,m_clientDataItemsType);
+
+ GetVListBoxComboPopup()->SetItemClientData(n,clientData,m_clientDataItemsType);
}
void* wxOwnerDrawnComboBox::DoGetItemClientData(unsigned int n) const
if ( !m_popupInterface )
return NULL;
- return m_popupInterface->GetItemClientData(n);
+ return GetVListBoxComboPopup()->GetItemClientData(n);
}
void wxOwnerDrawnComboBox::DoSetItemClientObject(unsigned int n, wxClientData* clientData)
}
else
{
- dc.DrawText( m_popupInterface->GetString(item), rect.x + 2, rect.y );
+ dc.DrawText( GetVListBoxComboPopup()->GetString(item), rect.x + 2, rect.y );
}
}
return -1;
}
-void wxOwnerDrawnComboBox::OnDrawBackground(wxDC& dc, const wxRect& rect, int item, int flags) const
+void wxOwnerDrawnComboBox::OnDrawBackground(wxDC& dc,
+ const wxRect& rect,
+ int WXUNUSED(item),
+ int flags) const
{
- // we need to render selected and current items differently
- if ( m_popupInterface->IsCurrent((size_t)item) )
+ // We need only to explicitly draw background for items
+ // that should have selected background. Also, call PrepareBackground
+ // always when painting the control so that clipping is done properly.
+
+ if ( (flags & wxODCB_PAINTING_SELECTED) ||
+ ((flags & wxODCB_PAINTING_CONTROL) && HasFlag(wxCB_READONLY)) )
{
- DrawFocusBackground(dc,
- rect,
- (flags&wxODCB_PAINTING_CONTROL?0:wxCONTROL_ISSUBMENU) |
- wxCONTROL_SELECTED);
+ int bgFlags = wxCONTROL_SELECTED;
+
+ if ( !(flags & wxODCB_PAINTING_CONTROL) )
+ bgFlags |= wxCONTROL_ISSUBMENU;
+
+ PrepareBackground(dc, rect, bgFlags);
}
- //else: do nothing for the normal items
}
#endif // wxUSE_ODCOMBOBOX
projects / wxWidgets.git / blobdiff