kicad/common/bitmap.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2011 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
* 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 <wx/image.h>
#include <wx/bitmap.h>
#include <wx/mstream.h>
#include <wx/menu.h>
#include <wx/menuitem.h>
#include <wx/aui/auibar.h>
#include <cstdint>
#include <mutex>
#include <unordered_map>
#include <common.h>
#include <bitmaps.h>
#include <pgm_base.h>
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#include <eda_base_frame.h>
#include <eda_draw_frame.h>
#include <settings/common_settings.h>
struct SCALED_BITMAP_ID {
BITMAP_DEF bitmap;
int scale;
bool operator==( SCALED_BITMAP_ID const& other ) const noexcept
{
return bitmap == other.bitmap && scale == other.scale;
}
};
namespace std {
template<> struct hash<SCALED_BITMAP_ID>
{
typedef SCALED_BITMAP_ID argument_type;
typedef std::size_t result_type;
result_type operator()( argument_type const& id ) const noexcept
{
static const bool sz64 = sizeof( uintptr_t ) == 8;
static const size_t mask = sz64 ? 0xF000000000000000uLL : 0xF0000000uL;
static const size_t offset = sz64 ? 60 : 28;
// The hash only needs to be fast and simple, not necessarily accurate - a collision
// only makes things slower, not broken. BITMAP_DEF is a pointer, so the most
// significant several bits are generally going to be the same for all. Just convert
// it to an integer and stuff the scale factor into those bits.
return
( (uintptr_t)( id.bitmap ) & ~mask ) |
( ( (uintptr_t)( id.scale ) & 0xF ) << offset );
}
};
}
wxBitmap KiBitmap( BITMAP_DEF aBitmap )
{
wxMemoryInputStream is( aBitmap->png, aBitmap->byteCount );
wxImage image( is, wxBITMAP_TYPE_PNG );
wxBitmap bitmap( image );
return bitmap;
}
int KiIconScale( wxWindow* aWindow )
{
const int vert_size = aWindow->ConvertDialogToPixels( wxSize( 0, 8 ) ).y;
// Autoscale won't exceed unity until the system has quite high resolution,
// because we don't want the icons to look obviously scaled on a system
// where it's easy to see it.
if( vert_size > 34 ) return 8;
else if( vert_size > 29 ) return 7;
else if( vert_size > 24 ) return 6;
else return 4;
}
static int get_scale_factor( wxWindow* aWindow )
{
int requested_scale = Pgm().GetCommonSettings()->m_Appearance.icon_scale;
if( requested_scale > 0 )
return requested_scale;
else
return KiIconScale( aWindow );
}
wxBitmap KiScaledBitmap( BITMAP_DEF aBitmap, wxWindow* aWindow )
{
// Bitmap conversions are cached because they can be slow.
static std::unordered_map<SCALED_BITMAP_ID, wxBitmap> bitmap_cache;
static std::mutex bitmap_cache_mutex;
const int scale = get_scale_factor( aWindow );
SCALED_BITMAP_ID id = { aBitmap, scale };
std::lock_guard<std::mutex> guard( bitmap_cache_mutex );
auto it = bitmap_cache.find( id );
if( it != bitmap_cache.end() )
{
return it->second;
}
else
{
wxMemoryInputStream is( aBitmap->png, aBitmap->byteCount );
wxImage image( is, wxBITMAP_TYPE_PNG );
// Bilinear seems to genuinely look better for these line-drawing icons
// than bicubic, despite claims in the wx documentation that bicubic is
// "highest quality". I don't recommend changing this. Bicubic looks
// blurry and makes me want an eye exam.
image.Rescale( scale * image.GetWidth() / 4, scale * image.GetHeight() / 4,
wxIMAGE_QUALITY_BILINEAR );
return bitmap_cache.emplace( id, wxBitmap( image ) ).first->second;
}
}
wxBitmap KiScaledBitmap( const wxBitmap& aBitmap, wxWindow* aWindow )
{
const int scale = get_scale_factor( aWindow );
if( scale == 4)
{
return wxBitmap( aBitmap );
}
else
{
wxImage image = aBitmap.ConvertToImage();
image.Rescale( scale * image.GetWidth() / 4, scale * image.GetHeight() / 4,
wxIMAGE_QUALITY_BILINEAR );
return wxBitmap( image );
}
}
wxBitmap* KiBitmapNew( BITMAP_DEF aBitmap )
{
wxMemoryInputStream is( aBitmap->png, aBitmap->byteCount );
wxImage image( is, wxBITMAP_TYPE_PNG );
wxBitmap* bitmap = new wxBitmap( image );
return bitmap;
}
bool SaveCanvasImageToFile( EDA_DRAW_FRAME* aFrame, const wxString& aFileName,
wxBitmapType aBitmapType )
{
wxCHECK( aFrame != nullptr, false );
bool retv = true;
// Make a screen copy of the canvas:
wxSize image_size = aFrame->GetCanvas()->GetClientSize();
wxClientDC dc( aFrame->GetCanvas() );
wxBitmap bitmap( image_size.x, image_size.y );
wxMemoryDC memdc;
memdc.SelectObject( bitmap );
memdc.Blit( 0, 0, image_size.x, image_size.y, &dc, 0, 0 );
memdc.SelectObject( wxNullBitmap );
wxImage image = bitmap.ConvertToImage();
if( !image.SaveFile( aFileName, aBitmapType ) )
retv = false;
image.Destroy();
return retv;
}
void AddBitmapToMenuItem( wxMenuItem* aMenu, const wxBitmap& aImage )
{
// Retrieve the global applicaton show icon option:
bool useImagesInMenus = Pgm().GetCommonSettings()->m_Appearance.use_icons_in_menus;
wxItemKind menu_type = aMenu->GetKind();
if( useImagesInMenus )
{
if( menu_type == wxITEM_CHECK || menu_type == wxITEM_RADIO )
{
#if defined( __WINDOWS__ )
aMenu->SetBitmaps( KiBitmap( checked_ok_xpm ), aImage );
// A workaround to a strange bug on Windows, wx Widgets 3.0:
// size of bitmaps is not taken in account for wxITEM_{CHECK,RADIO} menu
// unless we call SetFont
aMenu->SetFont( *wxNORMAL_FONT );
#endif
}
else if( menu_type != wxITEM_RADIO )
{
aMenu->SetBitmap( aImage );
}
}
}
wxMenuItem* AddMenuItem( wxMenu* aMenu, int aId, const wxString& aText,
const wxBitmap& aImage, wxItemKind aType = wxITEM_NORMAL )
{
wxMenuItem* item = new wxMenuItem( aMenu, aId, aText, wxEmptyString, aType );
AddBitmapToMenuItem( item, aImage );
aMenu->Append( item );
return item;
}
wxMenuItem* AddMenuItem( wxMenu* aMenu, int aId, const wxString& aText,
const wxString& aHelpText, const wxBitmap& aImage,
wxItemKind aType = wxITEM_NORMAL )
{
wxMenuItem* item = new wxMenuItem( aMenu, aId, aText, aHelpText, aType );
AddBitmapToMenuItem( item, aImage );
aMenu->Append( item );
return item;
}
wxMenuItem* AddMenuItem( wxMenu* aMenu, wxMenu* aSubMenu, int aId,
const wxString& aText, const wxBitmap& aImage )
{
wxMenuItem* item = new wxMenuItem( aMenu, aId, aText );
item->SetSubMenu( aSubMenu );
AddBitmapToMenuItem( item, aImage );
aMenu->Append( item );
return item;
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}
wxMenuItem* AddMenuItem( wxMenu* aMenu, wxMenu* aSubMenu, int aId,
const wxString& aText, const wxString& aHelpText,
const wxBitmap& aImage )
{
wxMenuItem* item = new wxMenuItem( aMenu, aId, aText, aHelpText );
item->SetSubMenu( aSubMenu );
AddBitmapToMenuItem( item, aImage );
aMenu->Append( item );
return item;
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}