kicad/common/widgets/indicator_icon.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
* Copyright (C) 2017-2018 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/indicator_icon.h>
INDICATOR_ICON::INDICATOR_ICON( wxWindow* aParent, ICON_PROVIDER& aIconProvider,
ICON_ID aInitialIcon, int aID ):
wxPanel( aParent, aID ),
m_iconProvider( aIconProvider ),
m_currentId( aInitialIcon )
{
auto sizer = new wxBoxSizer( wxHORIZONTAL );
SetSizer( sizer );
const wxBitmap& icon = m_iconProvider.GetIndicatorIcon( m_currentId );
m_bitmap = new wxStaticBitmap( this, aID, icon, wxDefaultPosition, icon.GetSize() );
sizer->Add( m_bitmap, 0, 0 );
auto evtSkipper = [this] ( wxEvent& aEvent )
{
wxPostEvent( this, aEvent );
};
m_bitmap->Bind( wxEVT_LEFT_DOWN, evtSkipper );
}
void INDICATOR_ICON::SetIndicatorState( ICON_ID aIconId )
{
if( aIconId == m_currentId )
return;
m_currentId = aIconId;
const wxBitmap& icon = m_iconProvider.GetIndicatorIcon( m_currentId );
m_bitmap->SetBitmap( icon );
m_bitmap->SetSize( icon.GetSize() );
}
INDICATOR_ICON::ICON_ID INDICATOR_ICON::GetIndicatorState() const
{
return m_currentId;
}
wxImage createBlankImage( int size )
{
wxImage image( size, size );
image.InitAlpha();
for( int y = 0; y < size; ++y )
for( int x = 0; x < size; ++x )
image.SetAlpha( x, y, wxIMAGE_ALPHA_TRANSPARENT );
#ifdef __WXMSW__
// wxWidgets on Windows chokes on an empty fully transparent bitmap and draws it
// as a black box
image.SetRGB( size / 2, size / 2, 128, 128, 128 );
image.SetAlpha( size / 2, size / 2, 10 );
#endif
return image;
}
// Create an arrow icon of a particular size, colour and direction. 0 points up, 1 points
// right, and so forth.
wxBitmap createArrow( int size, int aDirection, wxColour aColour )
{
wxImage image = createBlankImage( size );
int startX = size / 2 - 1;
int len = 1;
int startY = aDirection % 2;
for( int y = startY; y < startY + ( size / 2 ); ++y )
{
for( int x = startX; x < startX + len; ++x )
{
image.SetRGB( x, y, aColour.Red(), aColour.Green(), aColour.Blue() );
image.SetAlpha( x, y, wxIMAGE_ALPHA_OPAQUE );
}
// Next row will start one pixel back and be two pixels longer
startX -= 1;
len += 2;
}
for( int i = 0; i < aDirection; ++i )
image = image.Rotate90();
return wxBitmap( image );
}
// Create a diamond icon of a particular size and colour.
wxBitmap createDiamond( int size, wxColour aColour )
{
wxImage image = createBlankImage( size );
int startX = size / 2 - 1;
int len = 1;
int startY = 2;
for( int y = startY; y < size && len > 0; ++y )
{
for( int x = startX; x < startX + len; ++x )
{
image.SetRGB( x, y, aColour.Red(), aColour.Green(), aColour.Blue() );
image.SetAlpha( x, y, wxIMAGE_ALPHA_OPAQUE );
}
// Next row will start one pixel back and be two pixels longer
if( y < ( size / 2) - 1 )
{
startX -= 1;
len += 2;
}
else
{
startX += 1;
len -= 2;
}
}
return wxBitmap( image );
}
ROW_ICON_PROVIDER::ROW_ICON_PROVIDER( int aSize )
{
m_blankBitmap = wxBitmap( createBlankImage( aSize ) );
m_rightArrowBitmap = createArrow( aSize, 1, wxColour( 64, 72, 255 ) );
m_upArrowBitmap = createArrow( aSize - 2, 0, wxSystemSettings().GetColour( wxSYS_COLOUR_3DDKSHADOW ) );
m_downArrowBitmap = createArrow( aSize - 2, 2, wxSystemSettings().GetColour( wxSYS_COLOUR_3DDKSHADOW ) );
m_dotBitmap = createDiamond( aSize, wxColour( 128, 144, 255 ) );
}
const wxBitmap& ROW_ICON_PROVIDER::GetIndicatorIcon( INDICATOR_ICON::ICON_ID aId ) const
{
switch( aId )
{
case STATE::UP: return m_upArrowBitmap;
case STATE::DOWN: return m_downArrowBitmap;
case STATE::ON: return m_rightArrowBitmap;
case STATE::DIMMED: return m_dotBitmap;
case STATE::OFF: return m_blankBitmap;
default: return m_blankBitmap;
}
}