267 lines
8.1 KiB
C++
267 lines
8.1 KiB
C++
/*
|
|
* This program source code file is part of KiCad, a free EDA CAD application.
|
|
*
|
|
* Copyright (C) 2017 Kicad Developers, see change_log.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 <preview_items/ruler_item.h>
|
|
|
|
#include <preview_items/preview_utils.h>
|
|
#include <gal/graphics_abstraction_layer.h>
|
|
#include <layers_id_colors_and_visibility.h>
|
|
#include <view/view.h>
|
|
#include <pcb_painter.h>
|
|
|
|
#include <base_units.h>
|
|
#include <common.h>
|
|
|
|
using namespace KIGFX::PREVIEW;
|
|
|
|
static const double maxTickDensity = 10.0; // min pixels between tick marks
|
|
static const double midTickLengthFactor = 1.5;
|
|
static const double majorTickLengthFactor = 2.5;
|
|
|
|
|
|
static void drawCursorStrings( KIGFX::VIEW* aView, const VECTOR2D& aCursor,
|
|
const VECTOR2D& aRulerVec, EDA_UNITS_T aUnits )
|
|
{
|
|
// draw the cursor labels
|
|
std::vector<wxString> cursorStrings;
|
|
|
|
cursorStrings.push_back( DimensionLabel( "x", aRulerVec.x, aUnits ) );
|
|
cursorStrings.push_back( DimensionLabel( "y", aRulerVec.y, aUnits ) );
|
|
|
|
cursorStrings.push_back( DimensionLabel( "r", aRulerVec.EuclideanNorm(), aUnits ) );
|
|
|
|
double degs = RAD2DECIDEG( -aRulerVec.Angle() );
|
|
cursorStrings.push_back( DimensionLabel( wxString::FromUTF8( "θ" ), degs, DEGREES ) );
|
|
|
|
auto temp = aRulerVec;
|
|
DrawTextNextToCursor( aView, aCursor, -temp, cursorStrings );
|
|
}
|
|
|
|
|
|
/**
|
|
* Description of a "tick format" for a scale factor - how many ticks there are
|
|
* between medium/major ticks and how each scale relates to the last one
|
|
*/
|
|
struct TICK_FORMAT
|
|
{
|
|
double divisionBase; ///> multiple from the last scale
|
|
int majorStep; ///> ticks between major ticks
|
|
int midStep; ///> ticks between medium ticks (0 if no medium ticks)
|
|
};
|
|
|
|
|
|
static TICK_FORMAT getTickFormatForScale( double aScale, double& aTickSpace, EDA_UNITS_T aUnits )
|
|
{
|
|
// simple 1/2/5 scales per decade
|
|
static std::vector<TICK_FORMAT> tickFormats =
|
|
{
|
|
{ 2, 10, 5 }, // |....:....|
|
|
{ 2, 5, 0 }, // |....|
|
|
{ 2.5, 2, 0 }, // |.|.|
|
|
};
|
|
|
|
// could start at a set number of MM, but that's not available in common
|
|
aTickSpace = 1;
|
|
|
|
// convert to a round (mod-10) number of mils
|
|
if( aUnits == INCHES )
|
|
{
|
|
aTickSpace *= 2.54;
|
|
}
|
|
|
|
int tickFormat = 0;
|
|
|
|
while( true )
|
|
{
|
|
const auto pixelSpace = aTickSpace * aScale;
|
|
|
|
if( pixelSpace >= maxTickDensity )
|
|
break;
|
|
|
|
tickFormat = ( tickFormat + 1 ) % tickFormats.size();
|
|
aTickSpace *= tickFormats[tickFormat].divisionBase;
|
|
}
|
|
|
|
return tickFormats[tickFormat];
|
|
}
|
|
|
|
|
|
/**
|
|
* Draw labelled ticks on a line. Ticks are spaced according to a
|
|
* maximum density. Miror ticks are not labelled.
|
|
*
|
|
* @param aGal the GAL to draw on
|
|
* @param aOrigin start of line to draw ticks on
|
|
* @param aLine line vector
|
|
* @param aMinorTickLen length of minor ticks in IU
|
|
*/
|
|
void drawTicksAlongLine( KIGFX::VIEW *aView, const VECTOR2D& aOrigin,
|
|
const VECTOR2D& aLine, double aMinorTickLen, EDA_UNITS_T aUnits )
|
|
{
|
|
VECTOR2D tickLine = aLine.Rotate( -M_PI_2 );
|
|
auto gal = aView->GetGAL();
|
|
double tickSpace;
|
|
TICK_FORMAT tickF = getTickFormatForScale( gal->GetWorldScale(), tickSpace, aUnits );
|
|
auto rs = static_cast<KIGFX::PCB_RENDER_SETTINGS*>( aView->GetPainter()->GetSettings() );
|
|
|
|
// number of ticks in whole ruler
|
|
int numTicks = (int) std::ceil( aLine.EuclideanNorm() / tickSpace );
|
|
|
|
// work out which way up the tick labels go
|
|
double labelAngle = -tickLine.Angle();
|
|
|
|
if( aLine.Angle() > 0 )
|
|
{
|
|
gal->SetHorizontalJustify( GR_TEXT_HJUSTIFY_LEFT );
|
|
}
|
|
else
|
|
{
|
|
gal->SetHorizontalJustify( GR_TEXT_HJUSTIFY_RIGHT );
|
|
labelAngle += M_PI;
|
|
}
|
|
|
|
// text and ticks are dimmed
|
|
gal->SetStrokeColor( rs->GetLayerColor( LAYER_AUX_ITEMS ).WithAlpha( PreviewOverlayDeemphAlpha( true ) ) );
|
|
|
|
const auto labelOffset = tickLine.Resize( aMinorTickLen * ( majorTickLengthFactor + 1 ) );
|
|
|
|
for( int i = 0; i < numTicks; ++i )
|
|
{
|
|
const auto tickPos = aOrigin + aLine.Resize( tickSpace * i );
|
|
|
|
double length = aMinorTickLen;
|
|
bool drawLabel = false;
|
|
|
|
if( i % tickF.majorStep == 0)
|
|
{
|
|
drawLabel = true;
|
|
length *= majorTickLengthFactor;
|
|
}
|
|
else if( tickF.midStep && i % tickF.midStep == 0 )
|
|
{
|
|
drawLabel = true;
|
|
length *= midTickLengthFactor;
|
|
}
|
|
|
|
gal->DrawLine( tickPos, tickPos + tickLine.Resize( length ) );
|
|
|
|
if( drawLabel )
|
|
{
|
|
wxString label = DimensionLabel( "", tickSpace * i, aUnits );
|
|
gal->BitmapText( label, tickPos + labelOffset, labelAngle );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Draw simple ticks on the back of a line such that the line is
|
|
* divided into n parts.
|
|
*
|
|
* @param aGal the GAL to draw on
|
|
* @param aOrigin start of line to draw ticks on
|
|
* @param aLine line vector
|
|
* @param aTickLen length of ticks in IU
|
|
* @param aNumDivisions number of parts to divide the line into
|
|
*/
|
|
void drawBacksideTicks( KIGFX::GAL& aGal, const VECTOR2D& aOrigin,
|
|
const VECTOR2D& aLine, double aTickLen, int aNumDivisions )
|
|
{
|
|
const double backTickSpace = aLine.EuclideanNorm() / aNumDivisions;
|
|
const auto backTickVec = aLine.Rotate( M_PI_2 ).Resize( aTickLen );
|
|
|
|
for( int i = 0; i < aNumDivisions + 1; ++i )
|
|
{
|
|
const auto backTickPos = aOrigin + aLine.Resize( backTickSpace * i );
|
|
aGal.DrawLine( backTickPos, backTickPos + backTickVec );
|
|
}
|
|
}
|
|
|
|
|
|
RULER_ITEM::RULER_ITEM( const TWO_POINT_GEOMETRY_MANAGER& aGeomMgr, EDA_UNITS_T userUnits ):
|
|
EDA_ITEM( NOT_USED ), // Never added to anything - just a preview
|
|
m_geomMgr( aGeomMgr ),
|
|
m_userUnits( userUnits )
|
|
{}
|
|
|
|
|
|
const BOX2I RULER_ITEM::ViewBBox() const
|
|
{
|
|
BOX2I tmp;
|
|
|
|
tmp.SetOrigin( m_geomMgr.GetOrigin() );
|
|
tmp.SetEnd( m_geomMgr.GetEnd() );
|
|
tmp.Normalize();
|
|
return tmp;
|
|
}
|
|
|
|
|
|
void RULER_ITEM::ViewGetLayers( int aLayers[], int& aCount ) const
|
|
{
|
|
aLayers[0] = LAYER_GP_OVERLAY;
|
|
aCount = 1;
|
|
}
|
|
|
|
|
|
void RULER_ITEM::ViewDraw( int aLayer, KIGFX::VIEW* aView ) const
|
|
{
|
|
auto& gal = *aView->GetGAL();
|
|
auto rs = static_cast<KIGFX::RENDER_SETTINGS*>( aView->GetPainter()->GetSettings() );
|
|
|
|
VECTOR2D origin = m_geomMgr.GetOrigin();
|
|
VECTOR2D end = m_geomMgr.GetEnd();
|
|
|
|
gal.SetLineWidth( 1.0 );
|
|
gal.SetIsStroke( true );
|
|
gal.SetIsFill( false );
|
|
|
|
gal.SetTextMirrored( false );
|
|
gal.SetStrokeColor( rs->GetLayerColor( LAYER_AUX_ITEMS ) );
|
|
|
|
gal.ResetTextAttributes();
|
|
|
|
// draw the main line from the origin to cursor
|
|
gal.DrawLine( origin, end );
|
|
|
|
VECTOR2D rulerVec( end - origin );
|
|
|
|
// constant text size on screen
|
|
SetConstantGlyphHeight( gal, 14.0 );
|
|
|
|
drawCursorStrings( aView, end, rulerVec, m_userUnits );
|
|
|
|
// tick label size
|
|
SetConstantGlyphHeight( gal, 12.0 );
|
|
|
|
// basic tick size
|
|
const double minorTickLen = 5.0 / gal.GetWorldScale();
|
|
|
|
drawTicksAlongLine( aView, origin, rulerVec, minorTickLen, m_userUnits );
|
|
|
|
gal.SetStrokeColor( rs->GetLayerColor( LAYER_AUX_ITEMS ).WithAlpha( PreviewOverlayDeemphAlpha( true ) ) );
|
|
drawBacksideTicks( gal, origin, rulerVec, minorTickLen * majorTickLengthFactor, 2 );
|
|
|
|
// draw the back of the origin "crosshair"
|
|
gal.DrawLine( origin, origin + rulerVec.Resize( -minorTickLen * midTickLengthFactor ) );
|
|
}
|