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+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Copyright (C) 2004 Jean-Pierre Charras, jaen-pierre.charras@gipsa-lab.inpg.com
+ * Copyright (C) 1992-2011 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 <class_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;
+
+ wxPoint dPos = posBefore - m_canvas->GetClientSize() / 2; // relative screen position to center before zoom
+ wxPoint newScreenPos = m_canvas->ToDeviceXY( GetCrossHairPosition() ); // screen position of crosshair after zoom
+ wxPoint newCenter = m_canvas->ToLogicalXY( newScreenPos - dPos );
+
+ AdjustScrollBars( newCenter );
+
+ m_canvas->Refresh();
+ m_canvas->Update();
+}
+
+
+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 );
+}
+
+
+/** Compute the zoom factor and the new draw offset to draw the
+ * selected area (Rect) in full window screen
+ * @param Rect = selected area to show after zooming
+ */
+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 );
+}
+
+
+/**
+ * Function OnZoom
+ * Called from any zoom event (toolbar , hotkey or popup )
+ */
+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();
+
+ 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();
+}
+
+
+/* add the zoom list menu the the MasterMenu.
+ * used in OnRightClick(wxMouseEvent& event)
+ */
+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, true );
+
+ 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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