Seth Hillbrand
9c258c7dae
Allows pasting images into web browsers preferentially over unicode text. While we have text so that you can paste into text editors and application/kicad so that you can paste between kicads and images for pasting into image editors, if you paste into a web browser either to share an image or similar, the browser will take HTML>>Text>>Image. So you never got the image. This puts the PNG data into base64 and makes a fake HTML entry that the web browser preferentially consumes
365 lines
12 KiB
C++
365 lines
12 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright The KiCad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "clipboard.h"
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#include <wx/clipbrd.h>
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#include <wx/dataobj.h>
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#include <wx/image.h>
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#include <wx/log.h>
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#include <wx/mstream.h>
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#include <wx/string.h>
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#include <wx/sstream.h>
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#include <io/csv.h>
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bool SaveClipboard( const std::string& aTextUTF8 )
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{
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wxLogNull doNotLog; // disable logging of failed clipboard actions
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if( wxTheClipboard->Open() )
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{
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// Store the UTF8 string as Unicode string in clipboard:
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wxTheClipboard->SetData(
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new wxTextDataObject( wxString( aTextUTF8.c_str(), wxConvUTF8 ) ) );
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wxTheClipboard->Flush(); // Allow data to be available after closing KiCad
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wxTheClipboard->Close();
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return true;
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}
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return false;
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}
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bool SaveClipboard( const std::string& aTextUTF8, const std::vector<CLIPBOARD_MIME_DATA>& aMimeData )
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{
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if( aMimeData.empty() )
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return SaveClipboard( aTextUTF8 );
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wxLogNull doNotLog; // disable logging of failed clipboard actions
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if( wxTheClipboard->Open() )
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{
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wxDataObjectComposite* data = new wxDataObjectComposite();
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data->Add( new wxTextDataObject( wxString( aTextUTF8.c_str(), wxConvUTF8 ) ), true );
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for( const CLIPBOARD_MIME_DATA& entry : aMimeData )
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{
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// Skip entries with no data (check both buffer and image)
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if( entry.m_data.GetDataLen() == 0 && !entry.m_image.has_value() )
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continue;
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// Handle pre-encoded PNG data (GTK optimization path).
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// Use wxDF_BITMAP to prevent wx from setting the type to Private
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if( entry.m_useRawPngData && entry.m_data.GetDataLen() > 0 )
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{
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wxCustomDataObject* custom = new wxCustomDataObject( wxDF_BITMAP );
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custom->Alloc( entry.m_data.GetDataLen() );
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custom->SetData( entry.m_data.GetDataLen(), entry.m_data.GetData() );
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data->Add( custom );
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continue;
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}
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// Handle bitmap image data using platform-native clipboard format.
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// wxBitmapDataObject automatically converts to the appropriate format:
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// - Windows: CF_DIB
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// - macOS: kUTTypeTIFF
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if( entry.m_image.has_value() && entry.m_image->IsOk() )
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{
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data->Add( new wxBitmapDataObject( *entry.m_image ) );
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continue;
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}
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// Add custom format data - note that on GTK, custom MIME types may not work
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// with all applications (they often become wxDF_PRIVATE internally), but they
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// work for KiCad-to-KiCad transfers.
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// We allocate and set data in a way that ensures the object is fully initialized.
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wxDataFormat format( entry.m_mimeType );
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wxCustomDataObject* custom = new wxCustomDataObject( format );
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// Allocate buffer first, then copy data - this ensures proper initialization
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custom->Alloc( entry.m_data.GetDataLen() );
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custom->SetData( entry.m_data.GetDataLen(), entry.m_data.GetData() );
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data->Add( custom );
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}
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wxTheClipboard->SetData( data );
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wxTheClipboard->Flush(); // Allow data to be available after closing KiCad
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wxTheClipboard->Close();
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return true;
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}
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return false;
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}
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std::string GetClipboardUTF8()
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{
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std::string result;
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wxLogNull doNotLog; // disable logging of failed clipboard actions
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// Check if clipboard is already open. This can happen if another event handler (such as
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// wxTextEntry::CanPaste() called during UPDATE_UI processing) opened the clipboard and
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// didn't close it. We handle this by reusing the existing session.
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bool wasAlreadyOpen = wxTheClipboard->IsOpened();
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bool isOpen = wasAlreadyOpen || wxTheClipboard->Open();
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if( isOpen )
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{
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if( wxTheClipboard->IsSupported( wxDataFormat( wxS( "application/kicad" ) ) ) )
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{
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wxCustomDataObject data( wxDataFormat( wxS( "application/kicad" ) ) );
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if( wxTheClipboard->GetData( data ) )
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{
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result.assign( static_cast<const char*>( data.GetData() ), data.GetSize() );
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if( !wasAlreadyOpen )
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wxTheClipboard->Close();
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return result;
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}
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}
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if( wxTheClipboard->IsSupported( wxDF_TEXT )
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|| wxTheClipboard->IsSupported( wxDF_UNICODETEXT ) )
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{
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wxTextDataObject data;
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wxTheClipboard->GetData( data );
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// The clipboard is expected containing a Unicode string, so return it
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// as UTF8 string
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result = data.GetText().utf8_str();
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}
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if( !wasAlreadyOpen )
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wxTheClipboard->Close();
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}
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return result;
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}
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std::unique_ptr<wxBitmap> GetImageFromClipboard()
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{
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std::unique_ptr<wxBitmap> bitmap;
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wxLogNull doNotLog; // disable logging of failed clipboard actions
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// Check if clipboard is already open (same handling as GetClipboardUTF8)
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bool wasAlreadyOpen = wxTheClipboard->IsOpened();
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bool isOpen = wasAlreadyOpen || wxTheClipboard->Open();
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if( isOpen )
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{
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if( wxTheClipboard->IsSupported( wxDF_BITMAP ) )
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{
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wxBitmapDataObject data;
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if( wxTheClipboard->GetData( data ) )
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{
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bitmap = std::make_unique<wxBitmap>( data.GetBitmap() );
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}
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}
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#ifdef __APPLE__
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// macOS screenshots use PNG format with UTI "public.png"
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else if( wxDataFormat pngFormat( wxS( "public.png" ) ); wxTheClipboard->IsSupported( pngFormat ) )
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{
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wxCustomDataObject pngData( pngFormat );
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if( wxTheClipboard->GetData( pngData ) && pngData.GetSize() > 0 )
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{
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wxMemoryInputStream stream( pngData.GetData(), pngData.GetSize() );
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wxImage img( stream, wxBITMAP_TYPE_PNG );
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if( img.IsOk() )
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bitmap = std::make_unique<wxBitmap>( img );
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}
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}
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#endif
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else if( wxTheClipboard->IsSupported( wxDF_FILENAME ) )
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{
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wxFileDataObject data;
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if( wxTheClipboard->GetData( data ) && data.GetFilenames().size() == 1 )
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{
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wxImage img( data.GetFilenames()[0] );
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bitmap = std::make_unique<wxBitmap>( img );
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if( !bitmap->IsOk() )
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bitmap.reset();
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}
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}
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if( !wasAlreadyOpen )
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wxTheClipboard->Close();
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}
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return bitmap;
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}
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bool SaveTabularDataToClipboard( const std::vector<std::vector<wxString>>& aData )
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{
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wxLogNull doNotLog; // disable logging of failed clipboard actions
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if( wxTheClipboard->Open() )
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{
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wxDataObjectComposite* data = new wxDataObjectComposite();
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// Set plain text CSV
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{
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wxStringOutputStream os;
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CSV_WRITER writer( os );
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writer.WriteLines( aData );
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data->Add( new wxTextDataObject( os.GetString() ), true );
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}
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// At this point, it would be great if we could add some format that spreadsheet
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// programs can understand without asking the user for options: perhaps SYLK or DIF.
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// But it doesn't seem like WX allows to put arbitrary MIME types on the clipboard,
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// even with wxCustomDataObject( wxDataFormat( "mime/type" ) ), which just ends up as
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// wxDF_PRIVATE, and wxDF_SYLK/DIF aren't mapped on GTK.
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wxTheClipboard->SetData( data );
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wxTheClipboard->Flush(); // Allow data to be available after closing KiCad
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wxTheClipboard->Close();
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return true;
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}
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return false;
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}
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bool GetTabularDataFromClipboard( std::vector<std::vector<wxString>>& aData )
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{
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// Again, it would be ideal if we could detect a spreadsheet mimetype here,
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// but WX doesn't seem to do that on Linux, at least.
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bool ok = false;
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// Check if clipboard is already open (same handling as GetClipboardUTF8)
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bool wasAlreadyOpen = wxTheClipboard->IsOpened();
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bool isOpen = wasAlreadyOpen || wxTheClipboard->Open();
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if( isOpen )
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{
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if( wxTheClipboard->IsSupported( wxDF_TEXT ) )
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{
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wxTextDataObject data;
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if( wxTheClipboard->GetData( data ) )
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{
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ok = AutoDecodeCSV( data.GetText(), aData );
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}
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}
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// We could also handle .csv wxDF_FILENAMEs here
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if( !wasAlreadyOpen )
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wxTheClipboard->Close();
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}
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return ok;
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}
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bool EncodeImageToPng( const wxImage& aImage, wxMemoryBuffer& aOutput )
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{
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if( !aImage.IsOk() )
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return false;
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wxImage imageCopy( aImage );
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// Fast PNG settings optimized for clipboard graphics
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imageCopy.SetOption( wxIMAGE_OPTION_PNG_COMPRESSION_LEVEL, 1 ); // Z_BEST_SPEED
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imageCopy.SetOption( wxIMAGE_OPTION_PNG_COMPRESSION_STRATEGY, 3 ); // Z_RLE
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imageCopy.SetOption( wxIMAGE_OPTION_PNG_FILTER, 0x08 ); // PNG_FILTER_NONE
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wxMemoryOutputStream memStream;
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wxBufferedOutputStream bufferedStream( memStream );
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if( !imageCopy.SaveFile( bufferedStream, wxBITMAP_TYPE_PNG ) )
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{
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wxLogDebug( wxS( "Failed to encode PNG" ) );
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return false;
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}
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bufferedStream.Close();
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auto stBuf = memStream.GetOutputStreamBuffer();
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aOutput.SetDataLen( 0 );
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aOutput.AppendData( stBuf->GetBufferStart(), stBuf->GetIntPosition() );
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return true;
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}
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bool AddPngToClipboardData( wxDataObjectComposite* aData, const wxMemoryBuffer& aPngData,
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const wxImage* aFallbackImage )
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{
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wxCHECK( wxTheClipboard->IsOpened(), false );
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wxCHECK( aPngData.GetDataLen() > 0, false );
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#if defined( __WXMSW__ )
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aData->Add( new wxCustomDataObject( wxDataFormat( wxDataFormatId::wxDF_BITMAP ) ) );
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wxCustomDataObject* pngObj = new wxCustomDataObject( wxDataFormat( "PNG" ) );
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pngObj->SetData( aPngData.GetDataLen(), aPngData.GetData() );
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aData->Add( pngObj );
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#elif defined( __WXGTK__ )
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wxCustomDataObject* pngObj = new wxCustomDataObject( wxDF_BITMAP );
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pngObj->SetData( aPngData.GetDataLen(), aPngData.GetData() );
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aData->Add( pngObj );
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#else // __WXOSX__
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wxCHECK( aFallbackImage && aFallbackImage->IsOk(), false );
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aData->Add( new wxBitmapDataObject( wxBitmap( *aFallbackImage ) ) );
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#endif
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return true;
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}
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bool AddTransparentImageToClipboardData( wxDataObjectComposite* aData, wxImage aImage )
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{
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wxCHECK( wxTheClipboard->IsOpened(), false );
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wxCHECK( aImage.IsOk(), false );
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#if defined( __WXGTK__ ) || defined( __WXMSW__ )
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wxMemoryBuffer pngData;
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if( !EncodeImageToPng( aImage, pngData ) )
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return false;
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return AddPngToClipboardData( aData, pngData );
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#else // __WXOSX__
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aData->Add( new wxBitmapDataObject( wxBitmap( aImage ) ) );
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return true;
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#endif
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} |