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ListBox perf improvements 

On Windows, reduces trips through the windows message system, substantially increasing performance of long list boxes (such as in the footprint assignment tool)
This commit is contained in:
Brian Fiete 2022-10-22 11:05:55 -04:00 committed by Wayne Stambaugh
parent 4a489a5d16
commit 0e758d6bc2
2 changed files with 21 additions and 9 deletions
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28
cvpcb/listbox_base.cpp
View File

@ -48,33 +48,43 @@ ITEMS_LISTBOX_BASE::~ITEMS_LISTBOX_BASE()
void ITEMS_LISTBOX_BASE::UpdateWidth( int aLine )
{
wxClientDC dc( this );
int itemCount = GetItemCount();
// Less than zero: recalculate width of all items.
if( aLine < 0 )
{
columnWidth = 0;
for( int ii = 0; ii < GetItemCount(); ii++ )
for( int ii = 0; ii < itemCount; ii++ )
{
UpdateLineWidth( (unsigned)ii );
UpdateLineWidth( (unsigned)ii, dc );
}
}
// Zero or above: update from a single line.
else
{
if( aLine < GetItemCount() )
UpdateLineWidth( (unsigned)aLine );
if( aLine < itemCount )
UpdateLineWidth( (unsigned)aLine, dc );
}
}
void ITEMS_LISTBOX_BASE::UpdateLineWidth( unsigned aLine )
void ITEMS_LISTBOX_BASE::UpdateLineWidth( unsigned aLine, wxClientDC& dc )
{
wxClientDC dc( this );
wxCoord w;
int newWidth = 10; // Value of AUTOSIZE_COL_MARGIN from wxWidgets source.
wxString str;
dc.SetFont( GetFont() );
dc.GetTextExtent( GetItemText( aLine, 0 ) + " ", &w, nullptr );
if( IsVirtual() )
str = OnGetItemText( aLine, 0 );
else
str = GetItemText( aLine, 0 );
str += " ";
dc.GetTextExtent( str, &w, nullptr );
newWidth += w;
if( newWidth > columnWidth )
@ -93,8 +103,10 @@ int ITEMS_LISTBOX_BASE::GetSelection()
void ITEMS_LISTBOX_BASE::DeselectAll()
{
for( int i = 0; i < GetItemCount(); i++ )
for( int i = GetFirstSelected(); i >= 0; i = GetNextSelected(i))
{
Select( i, false );
}
}

2
cvpcb/listboxes.h
View File

@ -76,7 +76,7 @@ private:
* if needed. This is effectively the wxListCtrl code for autosizing.
* NB. it relies on the caller checking the given line number is valid.
*/
void UpdateLineWidth( unsigned aLine );
void UpdateLineWidth( unsigned aLine, wxClientDC& dc );
int columnWidth;
};