kicad/common/tool/zoom_tool.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2017 KiCad Developers, see AUTHORS.txt for contributors.
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*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
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#include <pcb_edit_frame.h>
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#include <class_draw_panel_gal.h>
#include <view/view_controls.h>
#include <view/view.h>
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#include <tool/tool_manager.h>
#include <tool/actions.h>
#include <tool/zoom_tool.h>
#include <preview_items/selection_area.h>
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ZOOM_TOOL::ZOOM_TOOL() :
TOOL_INTERACTIVE( "common.Control.zoomTool" )
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{
m_frame = NULL;
}
ZOOM_TOOL::~ZOOM_TOOL() {}
void ZOOM_TOOL::Reset( RESET_REASON aReason )
{
m_frame = getEditFrame<EDA_DRAW_FRAME>();
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}
int ZOOM_TOOL::Main( const TOOL_EVENT& aEvent )
{
// This method is called both when the zoom tool is activated (on) or deactivated (off)
wxMenuBar* menu = m_frame->GetMenuBar();
bool zoom_tool_is_on = m_frame->GetToolToggled( ID_ZOOM_SELECTION ) ||
( menu && menu->IsChecked( ID_ZOOM_SELECTION ) );
if( !zoom_tool_is_on ) // This is a tool deselection: do nothing
return 0;
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m_frame->SetToolID( ID_ZOOM_SELECTION, wxCURSOR_MAGNIFIER, _( "Zoom to selection" ) );
while( auto evt = Wait() )
{
if( evt->IsCancel() || evt->IsActivate() )
break;
else if( evt->IsDrag( BUT_LEFT ) || evt->IsDrag( BUT_RIGHT ) )
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{
if( selectRegion() )
break;
}
else
m_toolMgr->PassEvent();
}
// Exit zoom tool
m_frame->SetNoToolSelected();
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return 0;
}
bool ZOOM_TOOL::selectRegion()
{
bool cancelled = false;
auto view = getView();
auto canvas = m_frame->GetGalCanvas();
getViewControls()->SetAutoPan( true );
KIGFX::PREVIEW::SELECTION_AREA area;
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view->Add( &area );
while( auto evt = Wait() )
{
if( evt->IsCancel() || evt->IsActivate() )
{
cancelled = true;
break;
}
if( evt->IsDrag( BUT_LEFT ) || evt->IsDrag( BUT_RIGHT ) )
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{
area.SetOrigin( evt->DragOrigin() );
area.SetEnd( evt->Position() );
view->SetVisible( &area, true );
view->Update( &area, KIGFX::GEOMETRY );
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}
if( evt->IsMouseUp( BUT_LEFT ) || evt->IsMouseUp( BUT_RIGHT ) )
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{
view->SetVisible( &area, false );
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auto selectionBox = area.ViewBBox();
VECTOR2D screenSize = view->ToWorld( canvas->GetClientSize(), false );
if( selectionBox.GetWidth() == 0 || selectionBox.GetHeight() == 0 )
{
break;
}
else
{
VECTOR2D vsize = selectionBox.GetSize();
double scale;
double ratio = std::max( fabs( vsize.x / screenSize.x ),
fabs( vsize.y / screenSize.y ) );
if( evt->IsMouseUp( BUT_LEFT ) )
{
scale = view->GetScale() / ratio;
}
else
{
scale = view->GetScale() * ratio;
}
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view->SetScale( scale );
view->SetCenter( selectionBox.Centre() );
break;
}
}
}
view->SetVisible( &area, false );
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view->Remove( &area );
getViewControls()->SetAutoPan( false );
return cancelled;
}
void ZOOM_TOOL::setTransitions()
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{
Go( &ZOOM_TOOL::Main, ACTIONS::zoomTool.MakeEvent() );
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}