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kicad/pagelayout_editor/tools/pl_selection_tool.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2019 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 <bitmaps.h>
#include <view/view.h>
#include <view/view_controls.h>
#include <preview_items/selection_area.h>
#include <pl_editor_frame.h>
#include <tool/tool_event.h>
#include <tool/tool_manager.h>
#include <tool/selection.h>
#include <tools/pl_actions.h>
#include <ws_data_model.h>
#include <ws_painter.h>
#include <ws_draw_item.h>
#include <collector.h>
#include "pl_selection_tool.h"
/**
* The maximum number of items in the clarify selection context menu. The current
* setting of 40 is arbitrary.
*/
#define MAX_SELECT_ITEM_IDS 40
SELECTION_CONDITION PL_CONDITIONS::Idle = [] (const SELECTION& aSelection )
{
return ( !aSelection.Front() || aSelection.Front()->GetEditFlags() == 0 );
};
#define HITTEST_THRESHOLD_PIXELS 5
PL_SELECTION_TOOL::PL_SELECTION_TOOL() :
TOOL_INTERACTIVE( "plEditor.InteractiveSelection" ),
m_frame( nullptr ),
m_additive( false ),
m_subtractive( false ),
m_multiple( false ),
m_skip_heuristics( false )
{
}
bool PL_SELECTION_TOOL::Init()
{
m_frame = getEditFrame<PL_EDITOR_FRAME>();
auto& menu = m_menu.GetMenu();
menu.AddSeparator( 200 );
menu.AddItem( PL_ACTIONS::drawLine, PL_CONDITIONS::Idle, 250 );
menu.AddItem( PL_ACTIONS::drawRectangle, PL_CONDITIONS::Idle, 250 );
menu.AddItem( PL_ACTIONS::placeText, PL_CONDITIONS::Idle, 250 );
menu.AddItem( PL_ACTIONS::placeImage, PL_CONDITIONS::Idle, 250 );
menu.AddItem( PL_ACTIONS::appendImportedWorksheet, PL_CONDITIONS::Idle, 250 );
menu.AddSeparator( 1000 );
m_frame->AddStandardSubMenus( m_menu );
return true;
}
void PL_SELECTION_TOOL::Reset( RESET_REASON aReason )
{
if( aReason == MODEL_RELOAD )
m_frame = getEditFrame<PL_EDITOR_FRAME>();
}
int PL_SELECTION_TOOL::UpdateMenu( const TOOL_EVENT& aEvent )
{
ACTION_MENU* actionMenu = aEvent.Parameter<ACTION_MENU*>();
CONDITIONAL_MENU* conditionalMenu = dynamic_cast<CONDITIONAL_MENU*>( actionMenu );
if( conditionalMenu )
conditionalMenu->Evaluate( m_selection );
if( actionMenu )
actionMenu->UpdateAll();
return 0;
}
int PL_SELECTION_TOOL::Main( const TOOL_EVENT& aEvent )
{
// Main loop: keep receiving events
while( TOOL_EVENT* evt = Wait() )
{
// Should selected items be added to the current selection or
// become the new selection (discarding previously selected items)
m_additive = evt->Modifier( MD_SHIFT );
// Should selected items be REMOVED from the current selection?
// This will be ignored if the SHIFT modifier is pressed
m_subtractive = !m_additive && evt->Modifier( MD_CTRL );
// Is the user requesting that the selection list include all possible
// items without removing less likely selection candidates
m_skip_heuristics = !!evt->Modifier( MD_ALT );
// Single click? Select single object
if( evt->IsClick( BUT_LEFT ) )
{
// If no modifier keys are pressed, clear the selection
if( !m_additive )
ClearSelection();
SelectPoint( evt->Position());
}
// right click? if there is any object - show the context menu
else if( evt->IsClick( BUT_RIGHT ) )
{
bool selectionCancelled = false;
if( m_selection.Empty() )
{
SelectPoint( evt->Position(), &selectionCancelled );
m_selection.SetIsHover( true );
}
if( !selectionCancelled )
m_menu.ShowContextMenu( m_selection );
}
// double click? Display the properties window
else if( evt->IsDblClick( BUT_LEFT ) )
{
// No double-click actions currently defined
}
// drag with LMB? Select multiple objects (or at least draw a selection box) or drag them
else if( evt->IsDrag( BUT_LEFT ) )
{
if( m_additive || m_subtractive || m_selection.Empty() )
{
selectMultiple();
}
else
{
// Check if dragging has started within any of selected items bounding box
if( selectionContains( evt->Position() ) )
{
// Yes -> run the move tool and wait till it finishes
m_toolMgr->InvokeTool( "plEditor.InteractiveEdit" );
}
else
{
// No -> clear the selection list
ClearSelection();
}
}
}
else if( evt->IsAction( &ACTIONS::cancelInteractive ) || evt->IsCancel() )
{
ClearSelection();
}
else if( evt->Action() == TA_UNDO_REDO_PRE )
{
ClearSelection();
}
else
evt->SetPassEvent();
}
// This tool is supposed to be active forever
assert( false );
return 0;
}
PL_SELECTION& PL_SELECTION_TOOL::GetSelection()
{
return m_selection;
}
EDA_ITEM* PL_SELECTION_TOOL::SelectPoint( const VECTOR2I& aWhere, bool* aSelectionCancelledFlag )
{
int threshold = KiROUND( getView()->ToWorld( HITTEST_THRESHOLD_PIXELS ) );
// locate items.
COLLECTOR collector;
for( WS_DATA_ITEM* dataItem : WS_DATA_MODEL::GetTheInstance().GetItems() )
{
for( WS_DRAW_ITEM_BASE* drawItem : dataItem->GetDrawItems() )
{
if( drawItem->HitTest( (wxPoint) aWhere, threshold ) )
collector.Append( drawItem );
}
}
bool anyCollected = collector.GetCount() != 0;
m_selection.ClearReferencePoint();
// Apply some ugly heuristics to avoid disambiguation menus whenever possible
if( collector.GetCount() > 1 && !m_skip_heuristics )
{
guessSelectionCandidates( collector, aWhere );
}
// If still more than one item we're going to have to ask the user.
if( collector.GetCount() > 1 )
{
collector.m_MenuTitle = _( "Clarify Selection" );
// Must call selectionMenu via RunAction() to avoid event-loop contention
m_toolMgr->RunAction( PL_ACTIONS::selectionMenu, true, &collector );
if( collector.m_MenuCancelled )
{
if( aSelectionCancelledFlag )
*aSelectionCancelledFlag = true;
return nullptr;
}
}
if( collector.GetCount() == 1 )
{
EDA_ITEM* item = collector[ 0 ];
toggleSelection( item );
return item;
}
if( !m_additive && anyCollected )
ClearSelection();
return nullptr;
}
void PL_SELECTION_TOOL::guessSelectionCandidates( COLLECTOR& collector, const VECTOR2I& aPos )
{
// There are certain conditions that can be handled automatically.
// Prefer an exact hit to a sloppy one
for( int i = 0; collector.GetCount() == 2 && i < 2; ++i )
{
EDA_ITEM* item = collector[ i ];
EDA_ITEM* other = collector[ ( i + 1 ) % 2 ];
if( item->HitTest( (wxPoint) aPos, 0 ) && !other->HitTest( (wxPoint) aPos, 0 ) )
collector.Remove( other );
}
}
PL_SELECTION& PL_SELECTION_TOOL::RequestSelection()
{
// If nothing is selected do a hover selection
if( m_selection.Empty() )
{
VECTOR2D cursorPos = getViewControls()->GetCursorPosition( true );
ClearSelection();
SelectPoint( cursorPos );
m_selection.SetIsHover( true );
}
return m_selection;
}
bool PL_SELECTION_TOOL::selectMultiple()
{
bool cancelled = false; // Was the tool cancelled while it was running?
m_multiple = true; // Multiple selection mode is active
KIGFX::VIEW* view = getView();
KIGFX::PREVIEW::SELECTION_AREA area;
view->Add( &area );
while( TOOL_EVENT* evt = Wait() )
{
if( TOOL_EVT_UTILS::IsCancelInteractive( *evt ) || evt->IsActivate() )
{
cancelled = true;
break;
}
if( evt->IsDrag( BUT_LEFT ) )
{
// Start drawing a selection box
area.SetOrigin( evt->DragOrigin() );
area.SetEnd( evt->Position() );
area.SetAdditive( m_additive );
area.SetSubtractive( m_subtractive );
view->SetVisible( &area, true );
view->Update( &area );
getViewControls()->SetAutoPan( true );
}
if( evt->IsMouseUp( BUT_LEFT ) )
{
getViewControls()->SetAutoPan( false );
// End drawing the selection box
view->SetVisible( &area, false );
int width = area.GetEnd().x - area.GetOrigin().x;
int height = area.GetEnd().y - area.GetOrigin().y;
/* Selection mode depends on direction of drag-selection:
* Left > Right : Select objects that are fully enclosed by selection
* Right > Left : Select objects that are crossed by selection
*/
bool windowSelection = width >= 0 ? true : false;
// Construct an EDA_RECT to determine EDA_ITEM selection
EDA_RECT selectionRect( (wxPoint)area.GetOrigin(), wxSize( width, height ) );
selectionRect.Normalize();
for( WS_DATA_ITEM* dataItem : WS_DATA_MODEL::GetTheInstance().GetItems() )
{
for( WS_DRAW_ITEM_BASE* item : dataItem->GetDrawItems() )
{
if( item->HitTest( selectionRect, windowSelection ) )
{
if( m_subtractive )
unselect( item );
else
select( item );
}
}
}
// Inform other potentially interested tools
if( !m_selection.Empty() )
m_toolMgr->ProcessEvent( EVENTS::SelectedEvent );
break; // Stop waiting for events
}
}
getViewControls()->SetAutoPan( false );
// Stop drawing the selection box
view->Remove( &area );
m_multiple = false; // Multiple selection mode is inactive
if( !cancelled )
m_selection.ClearReferencePoint();
return cancelled;
}
int PL_SELECTION_TOOL::AddItemToSel( const TOOL_EVENT& aEvent )
{
AddItemToSel( aEvent.Parameter<EDA_ITEM*>() );
return 0;
}
void PL_SELECTION_TOOL::AddItemToSel( EDA_ITEM* aItem, bool aQuietMode )
{
if( aItem )
{
select( aItem );
// Inform other potentially interested tools
if( !aQuietMode )
m_toolMgr->ProcessEvent( EVENTS::SelectedEvent );
}
}
int PL_SELECTION_TOOL::AddItemsToSel( const TOOL_EVENT& aEvent )
{
AddItemsToSel( aEvent.Parameter<EDA_ITEMS*>(), false );
return 0;
}
void PL_SELECTION_TOOL::AddItemsToSel( EDA_ITEMS* aList, bool aQuietMode )
{
if( aList )
{
for( EDA_ITEM* item : *aList )
select( item );
// Inform other potentially interested tools
if( !aQuietMode )
m_toolMgr->ProcessEvent( EVENTS::SelectedEvent );
}
}
int PL_SELECTION_TOOL::RemoveItemFromSel( const TOOL_EVENT& aEvent )
{
RemoveItemFromSel( aEvent.Parameter<EDA_ITEM*>() );
return 0;
}
void PL_SELECTION_TOOL::RemoveItemFromSel( EDA_ITEM* aItem, bool aQuietMode )
{
if( aItem )
{
unselect( aItem );
// Inform other potentially interested tools
if( !aQuietMode )
m_toolMgr->ProcessEvent( EVENTS::UnselectedEvent );
}
}
int PL_SELECTION_TOOL::RemoveItemsFromSel( const TOOL_EVENT& aEvent )
{
RemoveItemsFromSel( aEvent.Parameter<EDA_ITEMS*>(), false );
return 0;
}
void PL_SELECTION_TOOL::RemoveItemsFromSel( EDA_ITEMS* aList, bool aQuietMode )
{
if( aList )
{
for( EDA_ITEM* item : *aList )
unselect( item );
// Inform other potentially interested tools
if( !aQuietMode )
m_toolMgr->ProcessEvent( EVENTS::UnselectedEvent );
}
}
int PL_SELECTION_TOOL::ClearSelection( const TOOL_EVENT& aEvent )
{
ClearSelection();
return 0;
}
void PL_SELECTION_TOOL::RebuildSelection()
{
m_selection.Clear();
for( WS_DATA_ITEM* dataItem : WS_DATA_MODEL::GetTheInstance().GetItems() )
{
for( WS_DRAW_ITEM_BASE* item : dataItem->GetDrawItems() )
{
if( item->IsSelected() )
select( item );
}
}
}
int PL_SELECTION_TOOL::SelectionMenu( const TOOL_EVENT& aEvent )
{
COLLECTOR* collector = aEvent.Parameter<COLLECTOR*>();
if( !doSelectionMenu( collector ) )
collector->m_MenuCancelled = true;
return 0;
}
bool PL_SELECTION_TOOL::doSelectionMenu( COLLECTOR* aCollector )
{
EDA_ITEM* current = nullptr;
ACTION_MENU menu( true );
int limit = std::min( MAX_SELECT_ITEM_IDS, aCollector->GetCount() );
for( int i = 0; i < limit; ++i )
{
wxString text;
EDA_ITEM* item = ( *aCollector )[i];
text = item->GetSelectMenuText( m_frame->GetUserUnits() );
wxString menuText = wxString::Format("&%d. %s", i + 1, text );
menu.Add( menuText, i + 1, item->GetMenuImage() );
}
if( aCollector->m_MenuTitle.Length() )
menu.SetTitle( aCollector->m_MenuTitle );
menu.SetIcon( info_xpm );
menu.DisplayTitle( true );
SetContextMenu( &menu, CMENU_NOW );
while( TOOL_EVENT* evt = Wait() )
{
if( evt->Action() == TA_CHOICE_MENU_UPDATE )
{
if( current )
unhighlight( current, BRIGHTENED );
int id = *evt->GetCommandId();
// User has pointed an item, so show it in a different way
if( id > 0 && id <= limit )
{
current = ( *aCollector )[id - 1];
highlight( current, BRIGHTENED );
}
else
{
current = NULL;
}
}
else if( evt->Action() == TA_CHOICE_MENU_CHOICE )
{
if( current )
unhighlight( current, BRIGHTENED );
OPT<int> id = evt->GetCommandId();
// User has selected an item, so this one will be returned
if( id && ( *id > 0 ) )
current = ( *aCollector )[*id - 1];
else
current = NULL;
break;
}
getView()->UpdateItems();
m_frame->GetCanvas()->Refresh();
}
if( current )
{
unhighlight( current, BRIGHTENED );
getView()->UpdateItems();
m_frame->GetCanvas()->Refresh();
aCollector->Empty();
aCollector->Append( current );
return true;
}
return false;
}
void PL_SELECTION_TOOL::ClearSelection()
{
if( m_selection.Empty() )
return;
while( m_selection.GetSize() )
unhighlight( (EDA_ITEM*) m_selection.Front(), SELECTED, &m_selection );
getView()->Update( &m_selection );
m_selection.SetIsHover( false );
m_selection.ClearReferencePoint();
// Inform other potentially interested tools
m_toolMgr->ProcessEvent( EVENTS::ClearedEvent );
}
void PL_SELECTION_TOOL::toggleSelection( EDA_ITEM* aItem )
{
if( aItem->IsSelected() )
{
unselect( aItem );
// Inform other potentially interested tools
m_toolMgr->ProcessEvent( EVENTS::UnselectedEvent );
}
else
{
if( !m_additive )
ClearSelection();
select( aItem );
// Inform other potentially interested tools
m_toolMgr->ProcessEvent( EVENTS::SelectedEvent );
}
if( m_frame )
m_frame->GetCanvas()->ForceRefresh();
}
void PL_SELECTION_TOOL::select( EDA_ITEM* aItem )
{
highlight( aItem, SELECTED, &m_selection );
}
void PL_SELECTION_TOOL::unselect( EDA_ITEM* aItem )
{
unhighlight( aItem, SELECTED, &m_selection );
}
void PL_SELECTION_TOOL::highlight( EDA_ITEM* aItem, int aMode, PL_SELECTION* aGroup )
{
if( aMode == SELECTED )
aItem->SetSelected();
else if( aMode == BRIGHTENED )
aItem->SetBrightened();
if( aGroup )
aGroup->Add( aItem );
getView()->Update( aItem );
}
void PL_SELECTION_TOOL::unhighlight( EDA_ITEM* aItem, int aMode, PL_SELECTION* aGroup )
{
if( aMode == SELECTED )
aItem->ClearSelected();
else if( aMode == BRIGHTENED )
aItem->ClearBrightened();
if( aGroup )
aGroup->Remove( aItem );
getView()->Update( aItem );
}
bool PL_SELECTION_TOOL::selectionContains( const VECTOR2I& aPoint ) const
{
const unsigned GRIP_MARGIN = 20;
VECTOR2I margin = getView()->ToWorld( VECTOR2I( GRIP_MARGIN, GRIP_MARGIN ), false );
// Check if the point is located within any of the currently selected items bounding boxes
for( auto item : m_selection )
{
BOX2I itemBox = item->ViewBBox();
itemBox.Inflate( margin.x, margin.y ); // Give some margin for gripping an item
if( itemBox.Contains( aPoint ) )
return true;
}
return false;
}
void PL_SELECTION_TOOL::setTransitions()
{
Go( &PL_SELECTION_TOOL::UpdateMenu, ACTIONS::updateMenu.MakeEvent() );
Go( &PL_SELECTION_TOOL::Main, PL_ACTIONS::selectionActivate.MakeEvent() );
Go( &PL_SELECTION_TOOL::ClearSelection, PL_ACTIONS::clearSelection.MakeEvent() );
Go( &PL_SELECTION_TOOL::AddItemToSel, PL_ACTIONS::addItemToSel.MakeEvent() );
Go( &PL_SELECTION_TOOL::AddItemsToSel, PL_ACTIONS::addItemsToSel.MakeEvent() );
Go( &PL_SELECTION_TOOL::RemoveItemFromSel, PL_ACTIONS::removeItemFromSel.MakeEvent() );
Go( &PL_SELECTION_TOOL::RemoveItemsFromSel, PL_ACTIONS::removeItemsFromSel.MakeEvent() );
Go( &PL_SELECTION_TOOL::SelectionMenu, PL_ACTIONS::selectionMenu.MakeEvent() );
}
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