 Introduction of Graphics Abstraction Layer based rendering for pcbnew.
New classes:
- VIEW - represents view that is seen by user, takes care of layer ordering & visibility and how it is displayed (which location, how much zoomed, etc.)
- VIEW_ITEM - Base class for every item that can be displayed on VIEW (the biggest change is that now it may be necessary to override ViewBBox & ViewGetLayers method for derived classes).
- EDA_DRAW_PANEL_GAL - Inherits after EDA_DRAW_PANEL, displays VIEW output, right now it is not editable (in opposite to usual EDA_DRAW_PANEL).
- GAL/OPENGL_GAL/CAIRO_GAL - Base Graphics Abstraction Layer class + two different flavours (Cairo is not fully supported yet), that offers methods to draw primitives using different libraries.
- WX_VIEW_CONTROLS - Controller for VIEW, handles user events, allows zooming, panning, etc.
- PAINTER/PCB_PAINTER - Classes that uses GAL interface to draw items (as you may have already guessed - PCB_PAINTER is a class for drawing PCB specific object, PAINTER is an abstract class). Its methods are invoked by VIEW, when an item has to be drawn. To display a new type of item - you need to implement draw(ITEM_TYPE*) method that draws it using GAL methods.
- STROKE_FONT - Implements stroke font drawing using GAL methods.
Most important changes to Kicad original code:
* EDA_ITEM now inherits from VIEW_ITEM, which is a base class for all drawable objects.
* EDA_DRAW_FRAME contains both usual EDA_DRAW_PANEL and new EDA_DRAW_PANEL_GAL, that can be switched anytime.
* There are some new layers for displaying multilayer pads, vias & pads holes (these are not shown yet on the right sidebar in pcbnew)
* Display order of layers is different than in previous versions (if you are curious - you may check m_galLayerOrder@pcbnew/basepcbframe.cpp). Preserving usual order would result in not very natural display, such as showing silkscreen texts on the bottom.
* Introduced new hotkey (Alt+F12) and new menu option (View->Switch canvas) for switching canvas during runtime.
* Some of classes (mostly derived from BOARD_ITEM) now includes ViewBBox & ViewGetLayers methods.
* Removed tools/class_painter.h, as now it is extended and included in source code.
Build changes:
* GAL-based rendering option is turned on by a new compilation CMake option KICAD_GAL.
* When compiling with CMake option KICAD_GAL=ON, GLEW and Cairo libraries are required.
* GAL-related code is compiled into a static library (common/libgal).
* Build with KICAD_GAL=OFF should not need any new libraries and should come out as a standard version of Kicad
Currently most of items in pcbnew can be displayed using OpenGL (to be done are DIMENSIONS and MARKERS).
More details about GAL can be found in: http://www.ohwr.org/attachments/1884/view-spec.pdf
13 years ago |
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/**
* @file class_board_item.cpp * @brief Class BOARD_ITEM definition and some basic functions. */
/*
* This program source code file is part of KiCad, a free EDA CAD application. * * Copyright (C) 2012 Jean-Pierre Charras, jean-pierre.charras@ujf-grenoble.fr * Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com> * Copyright (C) 1992-2019 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 <fctsys.h>
#include <common.h>
#include <pcbnew.h>
#include <wx/debug.h>
#include <class_board.h>
#include <string>
wxString BOARD_ITEM::ShowShape( STROKE_T aShape ){ switch( aShape ) { case S_SEGMENT: return _( "Line" ); case S_RECT: return _( "Rect" ); case S_ARC: return _( "Arc" ); case S_CIRCLE: return _( "Circle" ); case S_CURVE: return _( "Bezier Curve" ); case S_POLYGON: return _( "Polygon" ); default: return wxT( "??" ); }}
BOARD* BOARD_ITEM::GetBoard() const{ if( Type() == PCB_T ) return (BOARD*) this;
BOARD_ITEM* parent = GetParent();
if( parent ) return parent->GetBoard();
return NULL;}
wxString BOARD_ITEM::GetLayerName() const{ BOARD* board = GetBoard();
if( board ) return board->GetLayerName( m_Layer );
// If no parent, return standard name
return BOARD::GetStandardLayerName( m_Layer );}
void BOARD_ITEM::ViewGetLayers( int aLayers[], int& aCount ) const{ // Basic fallback
aCount = 1; aLayers[0] = m_Layer;}
int BOARD_ITEM::getNextNumberInSequence( const std::set<int>& aSeq, bool aFillSequenceGaps){ if( aSeq.empty() ) return 1;
// By default go to the end of the sequence
int candidate = *aSeq.rbegin();
// Filling in gaps in pad numbering
if( aFillSequenceGaps ) { // start at the beginning
candidate = *aSeq.begin();
for( auto it : aSeq ) { if( it - candidate > 1 ) break;
candidate = it; } }
++candidate;
return candidate;}
void BOARD_ITEM::DeleteStructure(){ auto parent = GetParent();
if( parent ) parent->Remove( this );
delete this;}
void BOARD_ITEM::SwapData( BOARD_ITEM* aImage ){
}
void BOARD_ITEM::TransformShapeWithClearanceToPolygon( SHAPE_POLY_SET& aCornerBuffer, int aClearanceValue, int aError, bool ignoreLineWidth ) const{ wxASSERT_MSG( false, "Called TransformShapeWithClearanceToPolygon() on unsupported BOARD_ITEM." );};
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