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kicad/common/widgets/color_swatch.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2017-2024 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 <kiplatform/ui.h>
#include <widgets/color_swatch.h>
#include <wx/dcmemory.h>
#include <dpi_scaling_common.h>
#include <dialogs/dialog_color_picker.h>
#include <memory>
wxDEFINE_EVENT( COLOR_SWATCH_CHANGED, wxCommandEvent );
using KIGFX::COLOR4D;
wxBitmap COLOR_SWATCH::MakeBitmap( const COLOR4D& aColor, const COLOR4D& aBackground,
const wxSize& aSize, const wxSize& aCheckerboardSize,
const COLOR4D& aCheckerboardBackground )
{
wxBitmap bitmap( aSize );
wxMemoryDC iconDC;
iconDC.SelectObject( bitmap );
RenderToDC( &iconDC, aColor, aBackground, aSize, aCheckerboardSize, aCheckerboardBackground );
return bitmap;
}
wxBitmap COLOR_SWATCH::makeBitmap()
{
wxBitmap bitmap = COLOR_SWATCH::MakeBitmap( m_color, m_background,
ToPhys( m_size ), ToPhys( m_checkerboardSize ),
m_checkerboardBg );
bitmap.SetScaleFactor( GetDPIScaleFactor() );
return bitmap;
}
void COLOR_SWATCH::RenderToDC( wxDC* aDC, const KIGFX::COLOR4D& aColor,
const KIGFX::COLOR4D& aBackground, const wxRect& aRect,
const wxSize& aCheckerboardSize,
const KIGFX::COLOR4D& aCheckerboardBackground )
{
wxColor fg = aColor.ToColour();
wxBrush brush;
brush.SetStyle( wxBRUSHSTYLE_SOLID );
aDC->SetPen( *wxTRANSPARENT_PEN );
// Draw a checkerboard
COLOR4D white;
COLOR4D black;
bool rowCycle;
if( aColor == COLOR4D::UNSPECIFIED )
{
if( aCheckerboardBackground.GetBrightness() > 0.4 )
{
white = COLOR4D::WHITE;
black = white.Darkened( 0.15 );
rowCycle = true;
}
else
{
black = COLOR4D::BLACK;
white = black.Brightened( 0.15 );
rowCycle = false;
}
}
else
{
if( aBackground.GetBrightness() > 0.4 )
{
white = aBackground;
black = white.Darkened( 0.15 );
rowCycle = true;
}
else
{
black = COLOR4D::BLACK;
white = black.Brightened( 0.15 );
rowCycle = false;
}
}
for( int x = aRect.GetLeft(); x <= aRect.GetRight(); x += aCheckerboardSize.x )
{
bool colCycle = rowCycle;
for( int y = aRect.GetTop(); y <= aRect.GetBottom(); y += aCheckerboardSize.y )
{
wxColor bg = colCycle ? black.ToColour() : white.ToColour();
// Blend fg bg with the checkerboard
unsigned char r = wxColor::AlphaBlend( fg.Red(), bg.Red(), aColor.a );
unsigned char g = wxColor::AlphaBlend( fg.Green(), bg.Green(), aColor.a );
unsigned char b = wxColor::AlphaBlend( fg.Blue(), bg.Blue(), aColor.a );
brush.SetColour( r, g, b );
aDC->SetBrush( brush );
aDC->DrawRectangle( x, y, aCheckerboardSize.x, aCheckerboardSize.y );
colCycle = !colCycle;
}
rowCycle = !rowCycle;
}
}
COLOR_SWATCH::COLOR_SWATCH( wxWindow* aParent, const COLOR4D& aColor, int aID,
const COLOR4D& aBackground, const COLOR4D& aDefault,
SWATCH_SIZE aSwatchSize, bool aTriggerWithSingleClick ) :
wxPanel( aParent, aID ),
m_color( aColor ),
m_background( aBackground ),
m_default( aDefault ),
m_userColors( nullptr ),
m_readOnly( false ),
m_supportsOpacity( true )
{
wxASSERT_MSG( aSwatchSize != SWATCH_EXPAND, wxS( "SWATCH_EXPAND not supported in COLOR_SWATCH" ) );
switch( aSwatchSize )
{
case SWATCH_MEDIUM: m_size = ConvertDialogToPixels( SWATCH_SIZE_MEDIUM_DU ); break;
case SWATCH_SMALL: m_size = ConvertDialogToPixels( SWATCH_SIZE_SMALL_DU ); break;
case SWATCH_LARGE: m_size = ConvertDialogToPixels( SWATCH_SIZE_LARGE_DU ); break;
case SWATCH_EXPAND: m_size = ConvertDialogToPixels( SWATCH_SIZE_LARGE_DU ); break;
}
m_checkerboardSize = ConvertDialogToPixels( CHECKERBOARD_SIZE_DU );
m_checkerboardBg = aParent->GetBackgroundColour();
auto sizer = new wxBoxSizer( wxHORIZONTAL );
SetSizer( sizer );
m_swatch = new wxStaticBitmap( this, aID, makeBitmap() );
sizer->Add( m_swatch, 0, 0 );
setupEvents( aTriggerWithSingleClick );
}
COLOR_SWATCH::COLOR_SWATCH( wxWindow* aParent, wxWindowID aID, const wxPoint& aPos,
const wxSize& aSize, long aStyle ) :
wxPanel( aParent, aID, aPos, aSize, aStyle ),
m_userColors( nullptr ),
m_readOnly( false ),
m_supportsOpacity( true )
{
if( aSize == wxDefaultSize )
m_size = ConvertDialogToPixels( SWATCH_SIZE_MEDIUM_DU );
else
m_size = aSize;
m_checkerboardSize = ConvertDialogToPixels( CHECKERBOARD_SIZE_DU );
m_checkerboardBg = aParent->GetBackgroundColour();
#ifdef __WXMAC__
// Adjust for border
m_size.x -= 2;
m_size.y -= 2;
#endif
SetSize( m_size );
auto sizer = new wxBoxSizer( wxHORIZONTAL );
SetSizer( sizer );
m_swatch = new wxStaticBitmap( this, aID, makeBitmap() );
sizer->Add( m_swatch, 0, 0 );
setupEvents( false );
}
void COLOR_SWATCH::setupEvents( bool aTriggerWithSingleClick )
{
wxWindow* topLevelParent = wxGetTopLevelParent( GetParent() );
if( topLevelParent && dynamic_cast<DIALOG_SHIM*>( topLevelParent ) )
{
m_swatch->Bind( wxEVT_LEFT_DOWN,
[this] ( wxMouseEvent& aEvt )
{
GetNewSwatchColor();
} );
}
else
{
// forward click to any other listeners, since we don't want them
m_swatch->Bind( wxEVT_LEFT_DOWN, &COLOR_SWATCH::rePostEvent, this );
// bind the events that trigger the dialog
m_swatch->Bind( wxEVT_LEFT_DCLICK,
[this] ( wxMouseEvent& aEvt )
{
GetNewSwatchColor();
} );
if( aTriggerWithSingleClick )
{
m_swatch->Bind( wxEVT_LEFT_UP,
[this] ( wxMouseEvent& aEvt )
{
GetNewSwatchColor();
} );
}
}
m_swatch->Bind( wxEVT_MIDDLE_DOWN,
[this] ( wxMouseEvent& aEvt )
{
GetNewSwatchColor();
} );
m_swatch->Bind( wxEVT_RIGHT_DOWN, &COLOR_SWATCH::rePostEvent, this );
}
void COLOR_SWATCH::rePostEvent( wxEvent& aEvent )
{
wxPostEvent( this, aEvent );
}
static void sendSwatchChangeEvent( COLOR_SWATCH& aSender )
{
wxCommandEvent changeEvt( COLOR_SWATCH_CHANGED, aSender.GetId() );
// use this class as the object (alternative might be to
// set a custom event class but that's more work)
changeEvt.SetEventObject( &aSender );
wxPostEvent( &aSender, changeEvt );
}
void COLOR_SWATCH::SetSwatchColor( const COLOR4D& aColor, bool aSendEvent )
{
m_color = aColor;
m_swatch->SetBitmap( makeBitmap() );
if( aSendEvent )
sendSwatchChangeEvent( *this );
}
void COLOR_SWATCH::SetDefaultColor( const COLOR4D& aColor )
{
m_default = aColor;
}
void COLOR_SWATCH::SetSwatchBackground( const COLOR4D& aBackground )
{
m_background = aBackground;
m_swatch->SetBitmap( makeBitmap() );
}
COLOR4D COLOR_SWATCH::GetSwatchColor() const
{
return m_color;
}
void COLOR_SWATCH::GetNewSwatchColor()
{
if( m_readOnly )
{
if( m_readOnlyCallback )
m_readOnlyCallback();
return;
}
DIALOG_COLOR_PICKER dialog( ::wxGetTopLevelParent( this ), m_color, m_supportsOpacity,
m_userColors, m_default );
if( dialog.ShowModal() == wxID_OK )
{
COLOR4D newColor = dialog.GetColor();
if( newColor != COLOR4D::UNSPECIFIED || m_default == COLOR4D::UNSPECIFIED )
{
m_color = newColor;
m_swatch->SetBitmap( makeBitmap() );
sendSwatchChangeEvent( *this );
}
}
}
void COLOR_SWATCH::OnDarkModeToggle()
{
m_checkerboardBg = m_parent->GetBackgroundColour();
m_swatch->SetBitmap( makeBitmap() );
}
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