420 lines
13 KiB
C++
420 lines
13 KiB
C++
/*
|
|
* This program source code file is part of KICAD, a free EDA CAD application.
|
|
*
|
|
* Copyright (C) 2012 Torsten Hueter, torstenhtr <at> gmx.de
|
|
* Copyright (C) 2012-2017 Kicad Developers, see change_log.txt for contributors.
|
|
*
|
|
* Graphics Abstraction Layer (GAL) - base class
|
|
*
|
|
* 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 <wx/log.h>
|
|
|
|
#include <gal/graphics_abstraction_layer.h>
|
|
#include <gal/definitions.h>
|
|
|
|
#include <cmath>
|
|
|
|
using namespace KIGFX;
|
|
|
|
|
|
const double GAL::METRIC_UNIT_LENGTH = 1e9;
|
|
|
|
|
|
GAL::GAL( GAL_DISPLAY_OPTIONS& aDisplayOptions ) :
|
|
options( aDisplayOptions ),
|
|
strokeFont( this )
|
|
{
|
|
// Set the default values for the internal variables
|
|
SetIsFill( false );
|
|
SetIsStroke( true );
|
|
SetFillColor( COLOR4D( 0.0, 0.0, 0.0, 0.0 ) );
|
|
SetStrokeColor( COLOR4D( 1.0, 1.0, 1.0, 1.0 ) );
|
|
SetLookAtPoint( VECTOR2D( 0, 0 ) );
|
|
SetZoomFactor( 1.0 );
|
|
SetWorldUnitLength( 1.0 / METRIC_UNIT_LENGTH * 2.54 ); // 1 inch in nanometers
|
|
SetScreenDPI( 106 ); // Display resolution setting
|
|
SetDepthRange( VECTOR2D( GAL::MIN_DEPTH, GAL::MAX_DEPTH ) );
|
|
SetLayerDepth( 0.0 );
|
|
SetFlip( false, false );
|
|
SetLineWidth( 1.0 );
|
|
computeWorldScale();
|
|
SetAxesEnabled( false );
|
|
|
|
// Set grid defaults
|
|
SetGridVisibility( true );
|
|
SetCoarseGrid( 10 );
|
|
gridLineWidth = 0.5;
|
|
gridStyle = GRID_STYLE::LINES;
|
|
gridMinSpacing = 10;
|
|
|
|
// Initialize the cursor shape
|
|
SetCursorColor( COLOR4D( 1.0, 1.0, 1.0, 1.0 ) );
|
|
fullscreenCursor = false;
|
|
forceDisplayCursor = false;
|
|
SetCursorEnabled( false );
|
|
|
|
// Initialize text properties
|
|
ResetTextAttributes();
|
|
|
|
strokeFont.LoadNewStrokeFont( newstroke_font, newstroke_font_bufsize );
|
|
|
|
// subscribe for settings updates
|
|
observerLink = options.Subscribe( this );
|
|
}
|
|
|
|
|
|
GAL::~GAL()
|
|
{
|
|
}
|
|
|
|
|
|
void GAL::OnGalDisplayOptionsChanged( const GAL_DISPLAY_OPTIONS& aOptions )
|
|
{
|
|
// defer to the child class first
|
|
updatedGalDisplayOptions( aOptions );
|
|
|
|
// there is no refresh to do at this level
|
|
}
|
|
|
|
|
|
bool GAL::updatedGalDisplayOptions( const GAL_DISPLAY_OPTIONS& aOptions )
|
|
{
|
|
bool refresh = false;
|
|
|
|
if( options.m_gridStyle != gridStyle )
|
|
{
|
|
gridStyle = options.m_gridStyle ;
|
|
refresh = true;
|
|
}
|
|
|
|
if( options.m_gridLineWidth != gridLineWidth )
|
|
{
|
|
gridLineWidth = options.m_gridLineWidth ;
|
|
refresh = true;
|
|
}
|
|
|
|
if( options.m_gridMinSpacing != gridMinSpacing )
|
|
{
|
|
gridMinSpacing = options.m_gridMinSpacing;
|
|
refresh = true;
|
|
}
|
|
|
|
if( options.m_axesEnabled != axesEnabled )
|
|
{
|
|
axesEnabled = options.m_axesEnabled;
|
|
refresh = true;
|
|
}
|
|
|
|
if( options.m_forceDisplayCursor != forceDisplayCursor )
|
|
{
|
|
forceDisplayCursor = options.m_forceDisplayCursor;
|
|
refresh = true;
|
|
}
|
|
|
|
if( options.m_fullscreenCursor != fullscreenCursor )
|
|
{
|
|
fullscreenCursor = options.m_fullscreenCursor;
|
|
refresh = true;
|
|
}
|
|
|
|
// tell the derived class if the base class needs an update or not
|
|
return refresh;
|
|
}
|
|
|
|
|
|
void GAL::SetTextAttributes( const EDA_TEXT* aText )
|
|
{
|
|
SetGlyphSize( VECTOR2D( aText->GetTextSize() ) );
|
|
SetHorizontalJustify( aText->GetHorizJustify() );
|
|
SetVerticalJustify( aText->GetVertJustify() );
|
|
SetFontBold( aText->IsBold() );
|
|
SetFontItalic( aText->IsItalic() );
|
|
SetTextMirrored( aText->IsMirrored() );
|
|
}
|
|
|
|
|
|
void GAL::ResetTextAttributes()
|
|
{
|
|
// Tiny but non-zero - this will always need setting
|
|
// there is no built-in default
|
|
SetGlyphSize( { 1.0, 1.0 } );
|
|
|
|
SetHorizontalJustify( GR_TEXT_HJUSTIFY_CENTER );
|
|
SetVerticalJustify( GR_TEXT_VJUSTIFY_CENTER );
|
|
|
|
SetFontBold( false );
|
|
SetFontItalic( false );
|
|
SetTextMirrored( false );
|
|
}
|
|
|
|
|
|
VECTOR2D GAL::GetTextLineSize( const UTF8& aText ) const
|
|
{
|
|
// Compute the X and Y size of a given text.
|
|
// Because computeTextLineSize expects a one line text,
|
|
// aText is expected to be only one line text.
|
|
return strokeFont.computeTextLineSize( aText );
|
|
}
|
|
|
|
|
|
void GAL::ComputeWorldScreenMatrix()
|
|
{
|
|
computeWorldScale();
|
|
|
|
worldScreenMatrix.SetIdentity();
|
|
|
|
MATRIX3x3D translation;
|
|
translation.SetIdentity();
|
|
translation.SetTranslation( 0.5 * VECTOR2D( screenSize ) );
|
|
|
|
MATRIX3x3D scale;
|
|
scale.SetIdentity();
|
|
scale.SetScale( VECTOR2D( worldScale, worldScale ) );
|
|
|
|
MATRIX3x3D flip;
|
|
|
|
flip.SetIdentity();
|
|
flip.SetScale( VECTOR2D( globalFlipX ? -1.0 : 1.0, globalFlipY ? -1.0 : 1.0 ) );
|
|
|
|
MATRIX3x3D lookat;
|
|
lookat.SetIdentity();
|
|
lookat.SetTranslation( -lookAtPoint );
|
|
|
|
worldScreenMatrix = translation * flip * scale * lookat * worldScreenMatrix;
|
|
screenWorldMatrix = worldScreenMatrix.Inverse();
|
|
}
|
|
|
|
|
|
double GAL::computeMinGridSpacing() const
|
|
{
|
|
// just return the current value. This could be cleverer and take
|
|
// into account other settings in future
|
|
return gridMinSpacing;
|
|
}
|
|
|
|
|
|
void GAL::DrawGrid()
|
|
{
|
|
SetTarget( TARGET_NONCACHED );
|
|
|
|
// Draw the grid
|
|
// For the drawing the start points, end points and increments have
|
|
// to be calculated in world coordinates
|
|
VECTOR2D worldStartPoint = screenWorldMatrix * VECTOR2D( 0.0, 0.0 );
|
|
VECTOR2D worldEndPoint = screenWorldMatrix * VECTOR2D( screenSize );
|
|
|
|
const double gridThreshold = computeMinGridSpacing();
|
|
|
|
int gridScreenSizeDense = KiROUND( gridSize.x * worldScale );
|
|
int gridScreenSizeCoarse = KiROUND( gridSize.x * static_cast<double>( gridTick ) * worldScale );
|
|
|
|
// Compute the line marker or point radius of the grid
|
|
// Note: generic grids can't handle sub-pixel lines without
|
|
// either losing fine/course distinction or having some dots
|
|
// fail to render
|
|
double marker = std::max( 1.0, gridLineWidth ) / worldScale;
|
|
double doubleMarker = 2.0 * marker;
|
|
|
|
// Draw axes if desired
|
|
if( axesEnabled )
|
|
{
|
|
SetIsFill( false );
|
|
SetIsStroke( true );
|
|
SetStrokeColor( axesColor );
|
|
SetLineWidth( marker );
|
|
|
|
drawGridLine( VECTOR2D( worldStartPoint.x, 0 ),
|
|
VECTOR2D( worldEndPoint.x, 0 ) );
|
|
|
|
drawGridLine( VECTOR2D( 0, worldStartPoint.y ),
|
|
VECTOR2D( 0, worldEndPoint.y ) );
|
|
}
|
|
|
|
if( !gridVisibility )
|
|
return;
|
|
|
|
// Check if the grid would not be too dense
|
|
if( std::max( gridScreenSizeDense, gridScreenSizeCoarse ) <= gridThreshold )
|
|
return;
|
|
|
|
// Compute grid variables
|
|
int gridStartX = KiROUND( worldStartPoint.x / gridSize.x );
|
|
int gridEndX = KiROUND( worldEndPoint.x / gridSize.x );
|
|
int gridStartY = KiROUND( worldStartPoint.y / gridSize.y );
|
|
int gridEndY = KiROUND( worldEndPoint.y / gridSize.y );
|
|
|
|
// Correct the index, else some lines are not correctly painted
|
|
gridStartY -= std::abs( gridOrigin.y / gridSize.y ) + 1;
|
|
gridEndY -= std::abs( gridOrigin.y / gridSize.y ) - 1;
|
|
|
|
gridStartX -= std::abs( gridOrigin.x / gridSize.x ) + 1;
|
|
gridEndX -= std::abs( gridOrigin.x / gridSize.x ) - 1;
|
|
|
|
int dirX = gridEndX >= gridStartX ? 1 : -1;
|
|
int dirY = gridEndY >= gridStartY ? 1 : -1;
|
|
|
|
// Draw the grid behind all other layers
|
|
SetLayerDepth( depthRange.y * 0.75 );
|
|
|
|
if( gridStyle == GRID_STYLE::LINES )
|
|
{
|
|
SetIsFill( false );
|
|
SetIsStroke( true );
|
|
SetStrokeColor( gridColor );
|
|
|
|
// Now draw the grid, every coarse grid line gets the double width
|
|
|
|
// Vertical lines
|
|
for( int j = gridStartY; j != gridEndY; j += dirY )
|
|
{
|
|
const double y = j * gridSize.y + gridOrigin.y;
|
|
|
|
if( axesEnabled && y == 0 )
|
|
continue;
|
|
|
|
if( j % gridTick == 0 && gridScreenSizeDense > gridThreshold )
|
|
SetLineWidth( doubleMarker );
|
|
else
|
|
SetLineWidth( marker );
|
|
|
|
if( ( j % gridTick == 0 && gridScreenSizeCoarse > gridThreshold )
|
|
|| gridScreenSizeDense > gridThreshold )
|
|
{
|
|
drawGridLine( VECTOR2D( gridStartX * gridSize.x + gridOrigin.x, y ),
|
|
VECTOR2D( gridEndX * gridSize.x + gridOrigin.x, y ) );
|
|
}
|
|
}
|
|
|
|
// Horizontal lines
|
|
for( int i = gridStartX; i != gridEndX; i += dirX )
|
|
{
|
|
const double x = i * gridSize.x + gridOrigin.x;
|
|
|
|
if( axesEnabled && x == 0 )
|
|
continue;
|
|
|
|
if( i % gridTick == 0 && gridScreenSizeDense > gridThreshold )
|
|
SetLineWidth( doubleMarker );
|
|
else
|
|
SetLineWidth( marker );
|
|
|
|
if( ( i % gridTick == 0 && gridScreenSizeCoarse > gridThreshold )
|
|
|| gridScreenSizeDense > gridThreshold )
|
|
{
|
|
drawGridLine( VECTOR2D( x, gridStartY * gridSize.y + gridOrigin.y ),
|
|
VECTOR2D( x, gridEndY * gridSize.y + gridOrigin.y ) );
|
|
}
|
|
}
|
|
}
|
|
else if( gridStyle == GRID_STYLE::SMALL_CROSS )
|
|
{
|
|
SetIsFill( false );
|
|
SetIsStroke( true );
|
|
SetStrokeColor( gridColor );
|
|
|
|
SetLineWidth( marker );
|
|
double lineLen = GetLineWidth() * 2;
|
|
|
|
// Vertical positions:
|
|
for( int j = gridStartY; j != gridEndY; j += dirY )
|
|
{
|
|
if( ( j % gridTick == 0 && gridScreenSizeCoarse > gridThreshold )
|
|
|| gridScreenSizeDense > gridThreshold )
|
|
{
|
|
int posY = j * gridSize.y + gridOrigin.y;
|
|
|
|
// Horizontal positions:
|
|
for( int i = gridStartX; i != gridEndX; i += dirX )
|
|
{
|
|
if( ( i % gridTick == 0 && gridScreenSizeCoarse > gridThreshold )
|
|
|| gridScreenSizeDense > gridThreshold )
|
|
{
|
|
int posX = i * gridSize.x + gridOrigin.x;
|
|
|
|
drawGridLine( VECTOR2D( posX - lineLen, posY ),
|
|
VECTOR2D( posX + lineLen, posY ) );
|
|
|
|
drawGridLine( VECTOR2D( posX, posY - lineLen ),
|
|
VECTOR2D( posX, posY + lineLen ) );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else // Dotted grid
|
|
{
|
|
bool tickX, tickY;
|
|
SetIsFill( true );
|
|
SetIsStroke( false );
|
|
SetFillColor( gridColor );
|
|
|
|
for( int j = gridStartY; j != gridEndY; j += dirY )
|
|
{
|
|
if( j % gridTick == 0 && gridScreenSizeDense > gridThreshold )
|
|
tickY = true;
|
|
else
|
|
tickY = false;
|
|
|
|
for( int i = gridStartX; i != gridEndX; i += dirX )
|
|
{
|
|
if( i % gridTick == 0 && gridScreenSizeDense > gridThreshold )
|
|
tickX = true;
|
|
else
|
|
tickX = false;
|
|
|
|
if( tickX || tickY || gridScreenSizeDense > gridThreshold )
|
|
{
|
|
double radius = ( ( tickX && tickY ) ? doubleMarker : marker ) / 2.0;
|
|
DrawRectangle( VECTOR2D( i * gridSize.x - radius + gridOrigin.x,
|
|
j * gridSize.y - radius + gridOrigin.y ),
|
|
VECTOR2D( i * gridSize.x + radius + gridOrigin.x,
|
|
j * gridSize.y + radius + gridOrigin.y ) );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
VECTOR2D GAL::GetGridPoint( const VECTOR2D& aPoint ) const
|
|
{
|
|
return VECTOR2D( KiROUND( ( aPoint.x - gridOffset.x ) / gridSize.x ) * gridSize.x + gridOffset.x,
|
|
KiROUND( ( aPoint.y - gridOffset.y ) / gridSize.y ) * gridSize.y + gridOffset.y );
|
|
}
|
|
|
|
const int GAL::MIN_DEPTH = -1024;
|
|
const int GAL::MAX_DEPTH = 1023;
|
|
const int GAL::GRID_DEPTH = MAX_DEPTH - 1;
|
|
|
|
|
|
COLOR4D GAL::getCursorColor() const
|
|
{
|
|
auto color = cursorColor;
|
|
|
|
// dim the cursor if it's only on because it was forced
|
|
// (this helps to provide a hint for active tools)
|
|
if( !isCursorEnabled )
|
|
{
|
|
color.a = color.a * 0.5;
|
|
}
|
|
|
|
return color;
|
|
}
|