195 lines
7.3 KiB
C++
195 lines
7.3 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 (C) 2012 Jean-Pierre Charras, jean-pierre.charras@ujf-grenoble.fr
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* Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
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* Copyright (C) 2012 Wayne Stambaugh <stambaughw@verizon.net>
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* Copyright (C) 1992-2012 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 <fctsys.h>
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#include <common.h>
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#include <macros.h>
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#include <trigo.h>
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#include <pcb_screen.h>
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#include <eda_text.h> // FILLED
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#include <base_units.h>
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#include <pcbnew.h>
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#include <class_board_design_settings.h>
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#include <layers_id_colors_and_visibility.h>
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#include <pcbnew_id.h>
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#define ZOOM_FACTOR( x ) ( x * IU_PER_MILS / 10 )
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#define DMIL_GRID( x ) wxRealPoint( x * IU_PER_MILS / 10,\
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x * IU_PER_MILS / 10 )
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#define MM_GRID( x ) wxRealPoint( x * IU_PER_MM,\
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x * IU_PER_MM )
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/**
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Default Pcbnew zoom values.
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Limited to 19 values to keep a decent size to menus.
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Roughly a 1.5 progression.
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The last 2 values are handy when somebody uses a library import of a module
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(or foreign data) which has a bad coordinate.
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Also useful in GerbView for this reason.
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Zoom 5 and 10 can create artefacts when drawing (integer overflow in low level graphic
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functions )
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*/
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#define DEFAULT_ZOOM ZOOM_FACTOR( 120 )
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static const double pcbZoomList[] =
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{
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ZOOM_FACTOR( 0.1 ),
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ZOOM_FACTOR( 0.2 ),
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ZOOM_FACTOR( 0.3 ),
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ZOOM_FACTOR( 0.5 ),
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ZOOM_FACTOR( 1.0 ),
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ZOOM_FACTOR( 1.5 ),
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ZOOM_FACTOR( 2.0 ),
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ZOOM_FACTOR( 3.0 ),
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ZOOM_FACTOR( 4.5 ),
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ZOOM_FACTOR( 6.0 ),
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ZOOM_FACTOR( 8.0 ),
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ZOOM_FACTOR( 11.0 ),
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ZOOM_FACTOR( 15.0 ),
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ZOOM_FACTOR( 22.0 ),
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ZOOM_FACTOR( 35.0 ),
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ZOOM_FACTOR( 50.0 ),
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ZOOM_FACTOR( 80.0 ),
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ZOOM_FACTOR( 110.0 ),
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ZOOM_FACTOR( 150.0 ),
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ZOOM_FACTOR( 200.0 ),
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ZOOM_FACTOR( 300.0 ),
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/*
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The largest distance that wx can support is INT_MAX, since it represents
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distance often in a wxCoord or wxSize. As a scalar, a distance is always
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positive. On most machines which run KiCad, int is 32 bits and INT_MAX is
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2147483647. The most difficult distance for a virtual (world) cartesian
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space is the hypotenuse, or diagonal measurement at a 45 degree angle. This
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puts the most stress on the distance magnitude within the bounded virtual
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space. So if we allow this distance to be our constraint of <= INT_MAX, this
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constraint then propagates to the maximum distance in X and in Y that can be
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supported on each axis. Remember that the hypotenuse of a 1x1 square is
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sqrt( 1x1 + 1x1 ) = sqrt(2) = 1.41421356.
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hypotenuse of any square = sqrt(2) * deltaX;
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Let maximum supported hypotenuse be INT_MAX, then:
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MAX_AXIS = INT_MAX / sqrt(2) = 2147483647 / 1.41421356 = 1518500251
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This maximum distance is imposed by wxWidgets, not by KiCad. The imposition
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comes in the form of the data structures used in the graphics API at the
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wxDC level. Obviously when we are not interacting with wx we can use double
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to compute distances larger than this. For example the computation of the
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total length of a net, can and should be done in double, since it might
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actually be longer than a single diagonal line.
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The next choice is what to use for internal units (IU), sometimes called
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world units. If nanometers, then the virtual space must be limited to
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about 1.5 x 1.5 meters square. This is 1518500251 divided by 1e9 nm/meter.
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The maximum zoom factor then depends on the client window size. If we ask
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wx to handle something outside INT_MIN to INT_MAX, there are unreported
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problems in the non-Debug build because wxRound() goes silent.
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Let:
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const double MAX_AXIS = 1518500251;
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Then a maximum zoom factor for a screen of 1920 pixels wide is
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1518500251 / 1920 = 790885.
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The largest ZOOM_FACTOR in above table is ZOOM_FACTOR( 300 ), which computes
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out to 762000 just below 790885.
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*/
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};
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// Default grid sizes for PCB editor screens.
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static GRID_TYPE pcbGridList[] =
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{
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// predefined grid list in 0.0001 inches
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{ ID_POPUP_GRID_LEVEL_1000, DMIL_GRID( 1000 ) },
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{ ID_POPUP_GRID_LEVEL_500, DMIL_GRID( 500 ) },
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{ ID_POPUP_GRID_LEVEL_250, DMIL_GRID( 250 ) },
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{ ID_POPUP_GRID_LEVEL_200, DMIL_GRID( 200 ) },
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{ ID_POPUP_GRID_LEVEL_100, DMIL_GRID( 100 ) },
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{ ID_POPUP_GRID_LEVEL_50, DMIL_GRID( 50 ) },
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{ ID_POPUP_GRID_LEVEL_25, DMIL_GRID( 25 ) },
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{ ID_POPUP_GRID_LEVEL_20, DMIL_GRID( 20 ) },
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{ ID_POPUP_GRID_LEVEL_10, DMIL_GRID( 10 ) },
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{ ID_POPUP_GRID_LEVEL_5, DMIL_GRID( 5 ) },
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{ ID_POPUP_GRID_LEVEL_2, DMIL_GRID( 2 ) },
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{ ID_POPUP_GRID_LEVEL_1, DMIL_GRID( 1 ) },
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// predefined grid list in mm
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{ ID_POPUP_GRID_LEVEL_5MM, MM_GRID( 5.0 ) },
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{ ID_POPUP_GRID_LEVEL_2_5MM, MM_GRID( 2.5 ) },
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{ ID_POPUP_GRID_LEVEL_1MM, MM_GRID( 1.0 ) },
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{ ID_POPUP_GRID_LEVEL_0_5MM, MM_GRID( 0.5 ) },
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{ ID_POPUP_GRID_LEVEL_0_25MM, MM_GRID( 0.25 ) },
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{ ID_POPUP_GRID_LEVEL_0_2MM, MM_GRID( 0.2 ) },
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{ ID_POPUP_GRID_LEVEL_0_1MM, MM_GRID( 0.1 ) },
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{ ID_POPUP_GRID_LEVEL_0_0_5MM, MM_GRID( 0.05 ) },
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{ ID_POPUP_GRID_LEVEL_0_0_25MM, MM_GRID( 0.025 ) },
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{ ID_POPUP_GRID_LEVEL_0_0_1MM, MM_GRID( 0.01 ) }
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};
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PCB_SCREEN::PCB_SCREEN( const wxSize& aPageSizeIU ) :
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BASE_SCREEN( SCREEN_T )
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{
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// D(wxSize displayz = wxGetDisplaySize();)
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// D(printf( "displayz x:%d y:%d lastZoomFactor: %.16g\n", displayz.x, displayz.y, pcbZoomList[DIM(pcbZoomList)-1] );)
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for( unsigned i = 0; i < DIM( pcbZoomList ); ++i )
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m_ZoomList.push_back( pcbZoomList[i] );
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for( unsigned i = 0; i < DIM( pcbGridList ); ++i )
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AddGrid( pcbGridList[i] );
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// Set the working grid size to a reasonable value (in 1/10000 inch)
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SetGrid( DMIL_GRID( 500 ) );
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m_Active_Layer = F_Cu; // default active layer = front layer
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m_Route_Layer_TOP = F_Cu; // default layers pair for vias (bottom to top)
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m_Route_Layer_BOTTOM = B_Cu;
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SetZoom( DEFAULT_ZOOM ); // a default value for zoom
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InitDataPoints( aPageSizeIU );
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}
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PCB_SCREEN::~PCB_SCREEN()
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{
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ClearUndoRedoList();
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}
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int PCB_SCREEN::MilsToIuScalar()
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{
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return (int)IU_PER_MILS;
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}
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