140 lines
3.7 KiB
C++
140 lines
3.7 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) 2019 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 modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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 along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <preview_items/preview_utils.h>
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#include <gal/graphics_abstraction_layer.h>
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#include <base_units.h>
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#include <painter.h>
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#include <view/view.h>
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double KIGFX::PREVIEW::PreviewOverlayDeemphAlpha( bool aDeemph )
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{
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return aDeemph ? 0.5 : 1.0;
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}
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static wxString formatPreviewDimension( double aVal, EDA_UNITS_T aUnits )
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{
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int precision = 4;
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// show a sane precision for the preview, which doesn't need to
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// be accurate down to the nanometre
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switch( aUnits )
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{
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case MILLIMETRES:
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precision = 3; // 1um
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break;
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case INCHES:
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precision = 4; // 0.1mil
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break;
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case DEGREES:
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precision = 1; // 0.1deg
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break;
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case PERCENT:
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precision = 1; // 0.1%
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break;
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case UNSCALED_UNITS:
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break;
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}
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const wxString fmtStr = wxString::Format( "%%.%df", precision );
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wxString str = wxString::Format( fmtStr, To_User_Unit( aUnits, aVal ) );
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const wxString symbol = GetAbbreviatedUnitsLabel( aUnits, false );
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if( symbol.size() )
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str << " " << symbol;
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return str;
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}
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wxString KIGFX::PREVIEW::DimensionLabel( const wxString& prefix,
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double aVal, EDA_UNITS_T aUnits )
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{
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wxString str;
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if( prefix.size() )
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str << prefix << ": ";
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str << formatPreviewDimension( aVal, aUnits );
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return str;
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}
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void KIGFX::PREVIEW::SetConstantGlyphHeight( KIGFX::GAL& aGal, double aHeight )
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{
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aHeight /= aGal.GetWorldScale();
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auto glyphSize = aGal.GetGlyphSize();
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glyphSize = glyphSize * ( aHeight / glyphSize.y );
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aGal.SetGlyphSize( glyphSize );
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}
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void KIGFX::PREVIEW::DrawTextNextToCursor( KIGFX::VIEW* aView,
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const VECTOR2D& aCursorPos, const VECTOR2D& aTextQuadrant,
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const std::vector<wxString>& aStrings )
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{
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auto gal = aView->GetGAL();
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auto glyphSize = gal->GetGlyphSize();
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auto rs = aView->GetPainter()->GetSettings();
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const auto lineSpace = glyphSize.y * 0.2;
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auto linePitch = glyphSize.y + lineSpace;
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// radius string goes on the right of the cursor centre line
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// with a small horizontal offset (enough to keep clear of a
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// system cursor if present)
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auto textPos = aCursorPos;
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// if the text goes above the cursor, shift it up
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if( aTextQuadrant.y > 0 )
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{
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textPos.y -= linePitch * ( aStrings.size() + 1 );
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}
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if( aTextQuadrant.x < 0 )
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{
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gal->SetHorizontalJustify( GR_TEXT_HJUSTIFY_LEFT );
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textPos.x += 15.0 / gal->GetWorldScale();
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}
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else
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{
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gal->SetHorizontalJustify( GR_TEXT_HJUSTIFY_RIGHT );
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textPos.x -= 15.0 / gal->GetWorldScale();
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}
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gal->SetStrokeColor( rs->GetLayerColor( LAYER_AUX_ITEMS ).WithAlpha(
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PreviewOverlayDeemphAlpha( true ) ) );
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gal->SetIsFill( false );
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// write strings top-to-bottom
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for( const auto& str : aStrings )
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{
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textPos.y += linePitch;
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gal->BitmapText( str, textPos, 0.0 );
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}
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}
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