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Don't use items without values in generic wxDVC

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In particular, don't draw them, as this would reuse the value of the
previously drawn item, which would be wrong -- just leave them blank if
PrepareForItem() returned false, which happens if GetValue() returned a
null value or a value of a wrong type.
This commit is contained in:
Vadim Zeitlin
2021-12-01 01:32:22 +00:00
parent 9cb360a0aa
commit 55420130b5
1 changed files with 19 additions and 15 deletions
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20
src/generic/datavgen.cpp
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@@ -2463,14 +2463,15 @@ wxBitmap wxDataViewMainWindow::CreateItemBitmap( unsigned int row, int &indent )
width -= indent;
wxDataViewItem item = GetItemByRow( row );
cell->PrepareForItem(model, item, column->GetModelColumn());
if ( cell->PrepareForItem(model, item, column->GetModelColumn()) )
{
wxRect item_rect(x, 0, width, height);
item_rect.Deflate(PADDING_RIGHTLEFT, 0);
// dc.SetClippingRegion( item_rect );
cell->WXCallRender(item_rect, &dc, 0);
// dc.DestroyClippingRegion();
}
x += width;
}
@@ -2836,7 +2837,7 @@ void wxDataViewMainWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
cell->SetState(state);
if (hasValue)
cell->PrepareForItem(model, dataitem, col->GetModelColumn());
hasValue = cell->PrepareForItem(model, dataitem, col->GetModelColumn());
// draw the background
if ( !selected )
@@ -3789,8 +3790,7 @@ int wxDataViewMainWindow::QueryAndCacheLineHeight(unsigned int row, wxDataViewIt
wxDataViewRenderer *renderer =
const_cast<wxDataViewRenderer*>(column->GetRenderer());
renderer->PrepareForItem(model, item, column->GetModelColumn());
if ( renderer->PrepareForItem(model, item, column->GetModelColumn()) )
height = wxMax(height, renderer->GetSize().y);
}
@@ -5998,7 +5998,7 @@ public:
if ( m_model->HasValue(item, GetColumn()) )
{
m_renderer->PrepareForItem(m_model, item, GetColumn());
if ( m_renderer->PrepareForItem(m_model, item, GetColumn()) )
width += m_renderer->GetSize().x;
}
@@ -6747,7 +6747,9 @@ wxAccStatus wxDataViewCtrlAccessible::GetName(int childId, wxString* name)
continue; // Skip non-textual items
wxDataViewRenderer* r = dvCol->GetRenderer();
r->PrepareForItem(model, item, dvCol->GetModelColumn());
if ( !r->PrepareForItem(model, item, dvCol->GetModelColumn()) )
continue;
wxString vs = r->GetAccessibleDescription();
if ( !vs.empty() )
{
@@ -6905,7 +6907,9 @@ wxAccStatus wxDataViewCtrlAccessible::GetDescription(int childId, wxString* desc
model->GetValue(value, item, dvCol->GetModelColumn());
wxDataViewRenderer* r = dvCol->GetRenderer();
r->PrepareForItem(model, item, dvCol->GetModelColumn());
if ( !r->PrepareForItem(model, item, dvCol->GetModelColumn()) )
continue;
wxString valStr = r->GetAccessibleDescription();
// Skip first textual item
if ( !firstTextSkipped && !value.IsNull() && !value.IsType(wxS("bool")) && !valStr.empty() )