241 lines
8.3 KiB
C++
241 lines
8.3 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 Torsten Hueter, torstenhtr <at> gmx.de
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* Copyright (C) 2012 Kicad Developers, see change_log.txt for contributors.
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*
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* Graphics Abstraction Layer (GAL) - base class
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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 <wx/log.h>
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#include <gal/graphics_abstraction_layer.h>
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#include <gal/definitions.h>
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using namespace KIGFX;
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const double GAL::METRIC_UNIT_LENGTH = 1e9;
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GAL::GAL() :
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strokeFont( this )
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{
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// Set the default values for the internal variables
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SetIsFill( false );
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SetIsStroke( true );
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SetFillColor( COLOR4D( 0.0, 0.0, 0.0, 0.0 ) );
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SetStrokeColor( COLOR4D( 1.0, 1.0, 1.0, 1.0 ) );
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SetLookAtPoint( VECTOR2D( 0, 0 ) );
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SetZoomFactor( 1.0 );
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SetWorldUnitLength( 1.0 / METRIC_UNIT_LENGTH * 2.54 ); // 1 inch in nanometers
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SetScreenDPI( 106 ); // Display resolution setting
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SetDepthRange( VECTOR2D( GAL::MIN_DEPTH, GAL::MAX_DEPTH ) );
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SetLayerDepth( 0.0 );
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SetFlip( false, false );
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SetLineWidth( 1.0 );
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ComputeWorldScale();
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// Set grid defaults
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SetGridVisibility( true );
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SetGridStyle( GRID_STYLE_LINES );
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SetGridDrawThreshold( 10 );
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SetCoarseGrid( 10 );
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SetGridLineWidth( 0.5 );
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// Initialize the cursor shape
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SetCursorColor( COLOR4D( 1.0, 1.0, 1.0, 1.0 ) );
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SetCursorSize( 80 );
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SetCursorEnabled( false );
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strokeFont.LoadNewStrokeFont( newstroke_font, newstroke_font_bufsize );
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}
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GAL::~GAL()
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{
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}
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void GAL::SetTextAttributes( const EDA_TEXT* aText )
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{
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strokeFont.SetGlyphSize( VECTOR2D( aText->GetSize() ) );
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strokeFont.SetHorizontalJustify( aText->GetHorizJustify() );
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strokeFont.SetVerticalJustify( aText->GetVertJustify() );
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strokeFont.SetBold( aText->IsBold() );
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strokeFont.SetItalic( aText->IsItalic() );
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strokeFont.SetMirrored( aText->IsMirrored() );
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}
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void GAL::ComputeWorldScreenMatrix()
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{
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ComputeWorldScale();
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worldScreenMatrix.SetIdentity();
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MATRIX3x3D translation;
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translation.SetIdentity();
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translation.SetTranslation( 0.5 * VECTOR2D( screenSize ) );
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MATRIX3x3D scale;
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scale.SetIdentity();
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scale.SetScale( VECTOR2D( worldScale, worldScale ) );
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MATRIX3x3D flip;
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flip.SetIdentity();
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flip.SetScale( VECTOR2D( flipX, flipY ) );
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MATRIX3x3D lookat;
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lookat.SetIdentity();
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lookat.SetTranslation( -lookAtPoint );
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worldScreenMatrix = translation * flip * scale * lookat * worldScreenMatrix;
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screenWorldMatrix = worldScreenMatrix.Inverse();
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}
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void GAL::DrawGrid()
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{
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if( !gridVisibility )
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return;
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SetTarget( TARGET_NONCACHED );
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// Draw the grid
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// For the drawing the start points, end points and increments have
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// to be calculated in world coordinates
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VECTOR2D worldStartPoint = screenWorldMatrix * VECTOR2D( 0.0, 0.0 );
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VECTOR2D worldEndPoint = screenWorldMatrix * VECTOR2D( screenSize );
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int gridScreenSizeDense = round( gridSize.x * worldScale );
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int gridScreenSizeCoarse = round( gridSize.x * static_cast<double>( gridTick ) * worldScale );
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// Compute the line marker or point radius of the grid
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double marker = 2.0 * gridLineWidth / worldScale;
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double doubleMarker = 2.0 * marker;
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// Check if the grid would not be too dense
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if( std::max( gridScreenSizeDense, gridScreenSizeCoarse ) > gridDrawThreshold )
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{
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// Compute grid variables
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int gridStartX = round( worldStartPoint.x / gridSize.x );
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int gridEndX = round( worldEndPoint.x / gridSize.x );
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int gridStartY = round( worldStartPoint.y / gridSize.y );
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int gridEndY = round( worldEndPoint.y / gridSize.y );
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assert( gridEndX >= gridStartX );
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assert( gridEndY >= gridStartY );
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// Correct the index, else some lines are not correctly painted
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gridStartX -= std::abs( gridOrigin.x / gridSize.x ) + 1;
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gridStartY -= std::abs( gridOrigin.y / gridSize.y ) + 1;
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gridEndX += std::abs( gridOrigin.x / gridSize.x ) + 1;
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gridEndY += std::abs( gridOrigin.y / gridSize.y ) + 1;
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// Draw the grid behind all other layers
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SetLayerDepth( depthRange.y * 0.75 );
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if( gridStyle == GRID_STYLE_LINES )
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{
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SetIsFill( false );
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SetIsStroke( true );
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SetStrokeColor( gridColor );
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// Now draw the grid, every coarse grid line gets the double width
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// Vertical lines
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for( int j = gridStartY; j < gridEndY; j += 1 )
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{
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if( j % gridTick == 0 && gridScreenSizeDense > gridDrawThreshold )
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SetLineWidth( doubleMarker );
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else
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SetLineWidth( marker );
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if( ( j % gridTick == 0 && gridScreenSizeCoarse > gridDrawThreshold )
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|| gridScreenSizeDense > gridDrawThreshold )
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{
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drawGridLine( VECTOR2D( gridStartX * gridSize.x, j * gridSize.y + gridOrigin.y ),
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VECTOR2D( gridEndX * gridSize.x, j * gridSize.y + gridOrigin.y ) );
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}
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}
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// Horizontal lines
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for( int i = gridStartX; i < gridEndX; i += 1 )
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{
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if( i % gridTick == 0 && gridScreenSizeDense > gridDrawThreshold )
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SetLineWidth( doubleMarker );
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else
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SetLineWidth( marker );
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if( ( i % gridTick == 0 && gridScreenSizeCoarse > gridDrawThreshold )
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|| gridScreenSizeDense > gridDrawThreshold )
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{
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drawGridLine( VECTOR2D( i * gridSize.x + gridOrigin.x, gridStartY * gridSize.y ),
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VECTOR2D( i * gridSize.x + gridOrigin.x, gridEndY * gridSize.y ) );
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}
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}
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}
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else // Dotted grid
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{
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bool tickX, tickY;
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SetIsFill( true );
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SetIsStroke( false );
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SetFillColor( gridColor );
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for( int j = gridStartY; j < gridEndY; j += 1 )
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{
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if( j % gridTick == 0 && gridScreenSizeDense > gridDrawThreshold )
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tickY = true;
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else
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tickY = false;
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for( int i = gridStartX; i < gridEndX; i += 1 )
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{
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if( i % gridTick == 0 && gridScreenSizeDense > gridDrawThreshold )
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tickX = true;
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else
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tickX = false;
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if( tickX || tickY || gridScreenSizeDense > gridDrawThreshold )
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{
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double radius = ( tickX && tickY ) ? doubleMarker : marker;
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DrawRectangle( VECTOR2D( i * gridSize.x - radius + gridOrigin.x,
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j * gridSize.y - radius + gridOrigin.y ),
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VECTOR2D( i * gridSize.x + radius + gridOrigin.x,
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j * gridSize.y + radius + gridOrigin.y ) );
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}
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}
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}
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}
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}
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}
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VECTOR2D GAL::GetGridPoint( const VECTOR2D& aPoint ) const
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{
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return VECTOR2D( round( ( aPoint.x - gridOffset.x ) / gridSize.x ) * gridSize.x + gridOffset.x,
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round( ( aPoint.y - gridOffset.y ) / gridSize.y ) * gridSize.y + gridOffset.y );
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}
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const int GAL::MIN_DEPTH = -1024;
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const int GAL::MAX_DEPTH = 1023;
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const int GAL::GRID_DEPTH = MAX_DEPTH - 1;
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