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kicad/common/widgets/split_button.cpp

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/*
* This program source code file is part of KICAD, a free EDA CAD application.
*
* Copyright (C) 2016 Anil8735(https://stackoverflow.com/users/3659387/anil8753)
* from https://stackoverflow.com/a/37274011
* Copyright (C) 2020-2023 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 2
* 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, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <widgets/split_button.h>
#include <wx/button.h>
#include <wx/dcclient.h>
#include <wx/dcmemory.h>
#include <wx/menu.h>
#include <wx/renderer.h>
#include <wx/settings.h>
#include <wx/version.h>
#include <kiplatform/ui.h>
SPLIT_BUTTON::SPLIT_BUTTON( wxWindow* aParent, wxWindowID aId, const wxString& aLabel,
const wxPoint& aPos, const wxSize& aSize ) :
wxPanel( aParent, aId, aPos, aSize, wxBORDER_NONE | wxTAB_TRAVERSAL, wxS( "DropDownButton" ) ),
m_label( aLabel )
{
m_arrowButtonWidth = FromDIP( 20 ); // just a fixed eyeballed constant width
m_widthPadding = FromDIP( 10 );
if( aSize == wxDefaultSize )
{
wxSize defaultSize = wxButton::GetDefaultSize( aParent );
wxSize textSize = GetTextExtent( m_label );
SetMinSize( wxSize( std::max( textSize.GetWidth(), defaultSize.GetWidth() + 1 ),
defaultSize.GetHeight() + 1 ) );
}
Bind( wxEVT_PAINT, &SPLIT_BUTTON::OnPaint, this );
Bind( wxEVT_LEFT_UP, &SPLIT_BUTTON::OnLeftButtonUp, this );
Bind( wxEVT_LEFT_DOWN, &SPLIT_BUTTON::OnLeftButtonDown, this );
Bind( wxEVT_KILL_FOCUS, &SPLIT_BUTTON::OnKillFocus, this );
Bind( wxEVT_LEAVE_WINDOW, &SPLIT_BUTTON::OnMouseLeave, this );
Bind( wxEVT_ENTER_WINDOW, &SPLIT_BUTTON::OnMouseEnter, this );
Bind( wxEVT_SYS_COLOUR_CHANGED, wxSysColourChangedEventHandler( SPLIT_BUTTON::onThemeChanged ),
this );
m_pMenu = new wxMenu();
}
SPLIT_BUTTON::~SPLIT_BUTTON()
{
delete m_pMenu;
m_pMenu = nullptr;
}
void SPLIT_BUTTON::onThemeChanged( wxSysColourChangedEvent &aEvent )
{
Refresh();
}
void SPLIT_BUTTON::SetMinSize( const wxSize& aSize )
{
m_unadjustedMinSize = aSize;
wxPanel::SetMinSize( wxSize( aSize.GetWidth() + m_arrowButtonWidth + m_widthPadding,
aSize.GetHeight() ) );
}
void SPLIT_BUTTON::SetWidthPadding( int aPadding )
{
m_widthPadding = aPadding;
SetMinSize( m_unadjustedMinSize );
}
void SPLIT_BUTTON::SetBitmap( const wxBitmapBundle& aBmp )
{
m_bitmap = aBmp;
#ifndef __WXMSW__
SetMinSize( m_bitmap.GetDefaultSize() );
#else
SetMinSize( m_bitmap.GetPreferredBitmapSizeFor( this ) );
#endif
}
void SPLIT_BUTTON::SetLabel( const wxString& aLabel )
{
if( m_label != aLabel )
{
m_label = aLabel;
Refresh();
}
}
wxMenu* SPLIT_BUTTON::GetSplitButtonMenu()
{
return m_pMenu;
}
void SPLIT_BUTTON::OnKillFocus( wxFocusEvent& aEvent )
{
if( m_stateButton != 0 || m_stateMenu != 0 )
{
m_stateButton = 0;
m_stateMenu = 0;
Refresh();
}
aEvent.Skip();
}
void SPLIT_BUTTON::OnMouseLeave( wxMouseEvent& aEvent )
{
if( m_stateButton != 0 || m_stateMenu != 0 )
{
m_stateButton = 0;
m_stateMenu = 0;
Refresh();
}
aEvent.Skip();
}
void SPLIT_BUTTON::OnMouseEnter( wxMouseEvent& aEvent )
{
if( m_stateButton != wxCONTROL_CURRENT || m_stateMenu != wxCONTROL_CURRENT )
{
m_stateButton = wxCONTROL_CURRENT;
m_stateMenu = wxCONTROL_CURRENT;
Refresh();
}
aEvent.Skip();
}
void SPLIT_BUTTON::OnLeftButtonUp( wxMouseEvent& aEvent )
{
m_stateButton = 0;
m_stateMenu = 0;
Refresh();
int x = -1;
int y = -1;
aEvent.GetPosition( &x, &y );
if( x < ( GetSize().GetWidth() - m_arrowButtonWidth ) )
{
wxEvtHandler* pEventHandler = GetEventHandler();
wxASSERT( pEventHandler );
pEventHandler->CallAfter(
[this]()
{
wxCommandEvent evt( wxEVT_BUTTON, GetId() );
evt.SetEventObject( this );
GetEventHandler()->ProcessEvent( evt );
} );
}
m_bLButtonDown = false;
aEvent.Skip();
}
void SPLIT_BUTTON::OnLeftButtonDown( wxMouseEvent& aEvent )
{
m_bLButtonDown = true;
int x = -1;
int y = -1;
aEvent.GetPosition( &x, &y );
if( x >= ( GetSize().GetWidth() - m_arrowButtonWidth ) )
{
m_stateButton = 0;
m_stateMenu = wxCONTROL_PRESSED;
Refresh();
wxSize size = GetSize();
wxPoint position;
position.x = 0;
position.y = size.GetHeight();
PopupMenu( m_pMenu, position );
m_stateMenu = 0;
Refresh();
}
else
{
m_stateButton = wxCONTROL_PRESSED;
m_stateMenu = wxCONTROL_PRESSED;
Refresh();
}
aEvent.Skip();
}
void SPLIT_BUTTON::OnPaint( wxPaintEvent& WXUNUSED( aEvent ) )
{
wxPaintDC dc( this );
wxSize size = GetSize();
const int width = size.GetWidth() - m_arrowButtonWidth;
#ifdef __WXMAC__
auto drawBackground =
[&]( wxRect aRect )
{
// wxWidgets doesn't have much support for dark mode on OSX; none of the
// system colours return the right values, nor does wxRendererNative draw
// the borders correctly. So we add some empirically chosen hacks here.
// NOTE: KEEP THESE HACKS IN SYNC WITH STD_BITMAP_BUTTON
wxColor fg = wxSystemSettings::GetColour( wxSYS_COLOUR_BTNTEXT );
wxColor bg = wxSystemSettings::GetColour( wxSYS_COLOUR_BTNFACE );
aRect.width += 1;
aRect.height += 1;
if( KIPLATFORM::UI::IsDarkTheme() )
{
bg = bg.ChangeLightness( m_bIsEnable ? 130 : 120 );
dc.SetBrush( bg );
dc.SetPen( bg );
}
else
{
bg = bg.ChangeLightness( m_bIsEnable ? 200 : 160 );
dc.SetBrush( bg );
fg = fg.ChangeLightness( 180 );
dc.SetPen( fg );
}
dc.DrawRoundedRectangle( aRect, aRect.height / 4.0 );
};
#endif
// Draw first part of button
wxRect r1;
r1.x = 0;
r1.y = 0;
r1.width = width;
r1.height = size.GetHeight();
#ifdef __WXMAC__
// wxRendereNative doesn't handle dark mode on OSX.
drawBackground( r1 );
#else
#ifdef _WXMSW_
r1.width += 2;
#endif
wxRendererNative::Get().DrawPushButton( this, dc, r1, m_stateButton );
#endif
SetForegroundColour( m_bIsEnable ? wxSystemSettings::GetColour( wxSYS_COLOUR_BTNTEXT )
: wxSystemSettings::GetColour( wxSYS_COLOUR_GRAYTEXT ) );
if( m_bitmap.IsOk() )
{
#ifndef __WXMSW__
wxSize bmpSize = m_bitmap.GetDefaultSize();
#else
wxSize bmpSize = m_bitmap.GetPreferredBitmapSizeFor( this );
#endif
wxBitmap bmp = m_bitmap.GetBitmapFor( this );
wxMemoryDC mdc( bmp );
r1.x = ( width - bmpSize.GetWidth() ) / 2;
if( r1.x < 0 )
r1.x = 0;
r1.y += ( size.GetHeight() - bmpSize.GetHeight() ) / 2;
dc.Blit( wxPoint( r1.x, r1.y ), bmpSize, &mdc, wxPoint( 0, 0 ), wxCOPY, true );
}
else
{
r1.y += ( ( size.GetHeight() - GetCharHeight() ) / 2 ) - 1;
dc.DrawLabel( m_label, r1, wxALIGN_CENTER_HORIZONTAL );
}
// Draw second part of button
wxRect r2;
r2.x = width;
r2.y = 0;
r2.width = m_arrowButtonWidth;
r2.height = size.GetHeight();
#ifdef __WXMAC__
// wxRendereNative doesn't handle dark mode on OSX.
drawBackground( r2 );
#else
r2.x -= 2;
wxRendererNative::Get().DrawPushButton( this, dc, r2, m_stateMenu );
#endif
wxRendererNative::Get().DrawDropArrow( this, dc, r2, m_stateMenu );
}
bool SPLIT_BUTTON::Enable( bool aEnable )
{
m_bIsEnable = aEnable;
wxPanel::Enable( m_bIsEnable );
if( m_bIsEnable
&& ( m_stateButton == wxCONTROL_DISABLED || m_stateMenu == wxCONTROL_DISABLED ) )
{
m_stateButton = 0;
m_stateMenu = 0;
Refresh();
}
if( !m_bIsEnable
&& ( m_stateButton != wxCONTROL_DISABLED || m_stateMenu != wxCONTROL_DISABLED ) )
{
m_stateButton = wxCONTROL_DISABLED;
m_stateMenu = wxCONTROL_DISABLED;
Refresh();
}
return aEnable;
}
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