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kicad/common/zoom.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2017 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 1992-2018 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
*/
/**
* @file zoom.cpp
*/
/*
* Manage zoom, grid step, and auto crop.
*/
#include <fctsys.h>
#include <id.h>
#include <class_drawpanel.h>
#include <view/view.h>
#include <base_screen.h>
#include <draw_frame.h>
#include <kicad_device_context.h>
#include <hotkeys_basic.h>
#include <menus_helpers.h>
#include <base_units.h>
#include <tool/tool_manager.h>
void EDA_DRAW_FRAME::RedrawScreen( const wxPoint& aCenterPoint, bool aWarpPointer )
{
if( IsGalCanvasActive() )
return;
AdjustScrollBars( aCenterPoint );
// Move the mouse cursor to the on grid graphic cursor position
if( aWarpPointer )
m_canvas->MoveCursorToCrossHair();
m_canvas->Refresh();
m_canvas->Update();
}
void EDA_DRAW_FRAME::RedrawScreen2( const wxPoint& posBefore )
{
if( IsGalCanvasActive() )
return;
// relative screen position to center before zoom
wxPoint dPos = posBefore - m_canvas->GetClientSize() / 2;
// screen position of crosshair after zoom
wxPoint newScreenPos = m_canvas->ToDeviceXY( GetCrossHairPosition() );
wxPoint newCenter = m_canvas->ToLogicalXY( newScreenPos - dPos );
AdjustScrollBars( newCenter );
m_canvas->Refresh();
m_canvas->Update();
}
// Factor out the calculation portion of the various BestZoom() implementations.
//
// Note that like it's forerunners this routine has an intentional side-effect: it
// sets the scroll centre position. While I'm not happy about that, it's probably
// not worth fixing as its days are numbered (GAL canvases use a different method).
double EDA_DRAW_FRAME::bestZoom( double sizeX, double sizeY, double scaleFactor, wxPoint centre )
{
double bestzoom = std::max( sizeX * scaleFactor / (double) m_canvas->GetClientSize().x,
sizeY * scaleFactor / (double) m_canvas->GetClientSize().y );
// Take scrollbars into account
DSIZE scrollbarSize = m_canvas->GetSize() - m_canvas->GetClientSize();
centre.x -= int( bestzoom * scrollbarSize.x / 2.0 );
centre.y -= int( bestzoom * scrollbarSize.y / 2.0 );
SetScrollCenterPosition( centre );
return bestzoom;
}
void EDA_DRAW_FRAME::Zoom_Automatique( bool aWarpPointer )
{
BASE_SCREEN* screen = GetScreen();
// Set the best zoom and get center point.
// BestZoom() can compute an illegal zoom if the client window size
// is small, say because frame is not maximized. So use the clamping form
// of SetZoom():
double bestzoom = BestZoom();
screen->SetScalingFactor( bestzoom );
if( screen->m_FirstRedraw )
SetCrossHairPosition( GetScrollCenterPosition() );
if( !IsGalCanvasActive() )
RedrawScreen( GetScrollCenterPosition(), aWarpPointer );
else
m_toolManager->RunAction( "common.Control.zoomFitScreen", true );
}
void EDA_DRAW_FRAME::Window_Zoom( EDA_RECT& Rect )
{
// Compute the best zoom
Rect.Normalize();
wxSize size = m_canvas->GetClientSize();
// Use ceil to at least show the full rect
double scalex = (double) Rect.GetSize().x / size.x;
double bestscale = (double) Rect.GetSize().y / size.y;
bestscale = std::max( bestscale, scalex );
GetScreen()->SetScalingFactor( bestscale );
RedrawScreen( Rect.Centre(), true );
}
void EDA_DRAW_FRAME::OnZoom( wxCommandEvent& event )
{
if( m_canvas == NULL )
return;
int id = event.GetId();
bool zoom_at_cursor = false;
BASE_SCREEN* screen = GetScreen();
wxPoint center = GetScrollCenterPosition();
if ( id == ID_KEY_ZOOM_IN )
{
id = GetCanvas()->GetEnableZoomNoCenter() ?
ID_OFFCENTER_ZOOM_IN : ID_POPUP_ZOOM_IN;
}
else if ( id == ID_KEY_ZOOM_OUT )
{
id = GetCanvas()->GetEnableZoomNoCenter() ?
ID_OFFCENTER_ZOOM_OUT : ID_POPUP_ZOOM_OUT;
}
switch( id )
{
case ID_OFFCENTER_ZOOM_IN:
center = m_canvas->ToDeviceXY( GetCrossHairPosition() );
if( screen->SetPreviousZoom() )
RedrawScreen2( center );
break;
case ID_POPUP_ZOOM_IN:
zoom_at_cursor = true;
center = GetCrossHairPosition();
// fall thru
case ID_VIEWER_ZOOM_IN:
case ID_ZOOM_IN:
if( screen->SetPreviousZoom() )
RedrawScreen( center, zoom_at_cursor );
break;
case ID_OFFCENTER_ZOOM_OUT:
center = m_canvas->ToDeviceXY( GetCrossHairPosition() );
if( screen->SetNextZoom() )
RedrawScreen2( center );
break;
case ID_POPUP_ZOOM_OUT:
zoom_at_cursor = true;
center = GetCrossHairPosition();
// fall thru
case ID_VIEWER_ZOOM_OUT:
case ID_ZOOM_OUT:
if( screen->SetNextZoom() )
RedrawScreen( center, zoom_at_cursor );
break;
case ID_VIEWER_ZOOM_REDRAW:
case ID_POPUP_ZOOM_REDRAW:
case ID_ZOOM_REDRAW:
m_canvas->Refresh();
break;
case ID_POPUP_ZOOM_CENTER:
center = GetCrossHairPosition();
RedrawScreen( center, true );
break;
case ID_POPUP_ZOOM_PAGE:
case ID_VIEWER_ZOOM_PAGE:
case ID_ZOOM_PAGE:
Zoom_Automatique( false );
break;
case ID_POPUP_ZOOM_SELECT:
break;
case ID_POPUP_CANCEL:
m_canvas->MoveCursorToCrossHair();
break;
default:
SetPresetZoom( id - ID_POPUP_ZOOM_LEVEL_START );
}
UpdateStatusBar();
}
void EDA_DRAW_FRAME::SetNextZoom()
{
GetScreen()->SetNextZoom();
}
void EDA_DRAW_FRAME::SetPrevZoom()
{
GetScreen()->SetPreviousZoom();
}
void EDA_DRAW_FRAME::SetPresetZoom( int aIndex )
{
BASE_SCREEN* screen = GetScreen();
if( aIndex >= (int) screen->m_ZoomList.size() )
{
wxLogDebug( wxT( "%s %d: index %d is outside the bounds of the zoom list." ),
__TFILE__, __LINE__, aIndex );
return;
}
if( m_zoomSelectBox )
m_zoomSelectBox->SetSelection( aIndex );
if( screen->SetZoom( screen->m_ZoomList[aIndex] ) )
RedrawScreen( GetScrollCenterPosition(), true );
UpdateStatusBar();
}
void EDA_DRAW_FRAME::AddMenuZoomAndGrid( wxMenu* MasterMenu )
{
int maxZoomIds;
double zoom;
wxString msg;
BASE_SCREEN* screen = m_canvas->GetScreen();
msg = AddHotkeyName( _( "Center" ), m_hotkeysDescrList, HK_ZOOM_CENTER );
AddMenuItem( MasterMenu, ID_POPUP_ZOOM_CENTER, msg, KiBitmap( zoom_center_on_screen_xpm ) );
msg = AddHotkeyName( _( "Zoom In" ), m_hotkeysDescrList, HK_ZOOM_IN );
AddMenuItem( MasterMenu, ID_POPUP_ZOOM_IN, msg, KiBitmap( zoom_in_xpm ) );
msg = AddHotkeyName( _( "Zoom Out" ), m_hotkeysDescrList, HK_ZOOM_OUT );
AddMenuItem( MasterMenu, ID_POPUP_ZOOM_OUT, msg, KiBitmap( zoom_out_xpm ) );
msg = AddHotkeyName( _( "Redraw View" ), m_hotkeysDescrList, HK_ZOOM_REDRAW );
AddMenuItem( MasterMenu, ID_POPUP_ZOOM_REDRAW, msg, KiBitmap( zoom_redraw_xpm ) );
msg = AddHotkeyName( _( "Zoom Auto" ), m_hotkeysDescrList, HK_ZOOM_AUTO );
AddMenuItem( MasterMenu, ID_POPUP_ZOOM_PAGE, msg, KiBitmap( zoom_fit_in_page_xpm ) );
wxMenu* zoom_choice = new wxMenu;
AddMenuItem( MasterMenu, zoom_choice,
ID_POPUP_ZOOM_SELECT, _( "Zoom Select" ),
KiBitmap( zoom_selection_xpm ) );
zoom = screen->GetZoom();
maxZoomIds = ID_POPUP_ZOOM_LEVEL_END - ID_POPUP_ZOOM_LEVEL_START;
maxZoomIds = ( (size_t) maxZoomIds < screen->m_ZoomList.size() ) ?
maxZoomIds : screen->m_ZoomList.size();
// Populate zoom submenu.
for( int i = 0; i < maxZoomIds; i++ )
{
msg.Printf( wxT( "%.2f" ), m_zoomLevelCoeff / screen->m_ZoomList[i] );
zoom_choice->Append( ID_POPUP_ZOOM_LEVEL_START + i, _( "Zoom: " ) + msg,
wxEmptyString, wxITEM_CHECK );
if( zoom == screen->m_ZoomList[i] )
zoom_choice->Check( ID_POPUP_ZOOM_LEVEL_START + i, true );
}
// Create grid submenu as required.
if( screen->GetGridCount() )
{
wxMenu* gridMenu = new wxMenu;
AddMenuItem( MasterMenu, gridMenu, ID_POPUP_GRID_SELECT,
_( "Grid Select" ), KiBitmap( grid_select_xpm ) );
wxArrayString gridsList;
int icurr = screen->BuildGridsChoiceList( gridsList, g_UserUnit != INCHES );
for( unsigned i = 0; i < gridsList.GetCount(); i++ )
{
GRID_TYPE& grid = screen->GetGrid( i );
gridMenu->Append( grid.m_CmdId, gridsList[i], wxEmptyString, wxITEM_CHECK );
if( (int)i == icurr )
gridMenu->Check( grid.m_CmdId, true );
}
}
MasterMenu->AppendSeparator();
AddMenuItem( MasterMenu, ID_POPUP_CANCEL, _( "Close" ), KiBitmap( cancel_xpm ) );
}
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