wx_bitmap_combobox.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright The KiCad Developers, see AUTHORS.txt for contributors.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
#include <widgets/wx_bitmap_combobox.h>
#include <wx/odcombo.h>
#include <wx/textctrl.h>
 
WX_BITMAP_COMBOBOX::WX_BITMAP_COMBOBOX( wxWindow* parent, wxWindowID id, const wxString& value,
                                        const wxPoint& pos, const wxSize& size, int n,
                                        const wxString choices[], long style,
                                        const wxValidator& validator, const wxString& name ) :
        wxBitmapComboBox( parent, id, value, pos, size, n, choices, style, validator, name )
{
}
 
 
#ifdef __WXMAC__
void WX_BITMAP_COMBOBOX::DoShowPopup( const wxRect& aRect, int aFlags )
{
    wxBitmapComboBox::DoShowPopup( aRect, aFlags );
    holdPopupMouseCapture();
}
 
 
void WX_BITMAP_COMBOBOX::holdPopupMouseCapture()
{
    wxComboPopup* popup = GetPopupControl();
    wxWindow*     list = popup ? popup->GetControl() : nullptr;
    wxWindow*     popupWindow = GetPopupWindow();
 
    if( !list || !popupWindow || popupWindow == m_hookedPopupWindow )
        return;
 
    m_hookedPopupWindow = popupWindow;
 
    // Deliberately not skipped, so that wxPopupTransientWindow's own idle handler never runs
    popupWindow->Bind( wxEVT_IDLE,
                       [list]( wxIdleEvent& )
                       {
                           // CaptureMouse() asserts on anything already in the capture stack, so
                           // test the stack rather than just the top of it
                           if( list->IsShownOnScreen() && !wxWindow::GetCapture() )
                               list->CaptureMouse();
                       } );
}
#endif
 
 
wxSize WX_BITMAP_COMBOBOX::DoGetBestSize() const
{
    wxSize size = wxBitmapComboBox::DoGetBestSize();
 
#ifdef __WXGTK__
    wxSize bmpSize = GetBitmapSize();
 
    if( bmpSize.y > 0 )
    {
        // wxBitmapComboBox::DoGetBestSize on GTK only adjusts the height when the bitmap is
        // taller than the text (GetCharHeight). When the text is taller, it skips the bitmap
        // adjustment entirely. But on some GTK themes (Plasma/Breeze), the cell renderer
        // padding around the bitmap means the combo still needs extra height beyond what the
        // text-only calculation provides. Ensure the combo is at least tall enough for the
        // bitmap plus the non-content overhead (borders, frame, focus ring).
        int overhead = size.y - GetCharHeight();
        size.y = std::max( size.y, bmpSize.y + overhead + 4 );
    }
 
    if( bmpSize.x > 0 )
    {
        // The width calculation in wxBitmapComboBox::DoGetBestSize on GTK is derived from the
        // text-only wxComboBox best size and does not account for the pixbuf cell renderer.
        // Add the bitmap width plus padding to prevent horizontal clipping.
        size.x += bmpSize.x + 4;
    }
 
#if !wxCHECK_VERSION( 3, 2, 9 )
    // wxWidgets had a bug on GTK where the wxBitmapComboBox doesn't scale correctly with fontsize.
    // Fixed upstream in wxWidgets 3.2.9: https://github.com/wxWidgets/wxWidgets/issues/25468
    wxTextCtrl dummyCtrl( m_parent, wxID_ANY );
    int        dummyWidth = 100;
 
    size.y = std::max( size.y, dummyCtrl.GetBestHeight( dummyWidth ) + 4 );
#endif
#endif
 
    return size;
}