kicad/common/gr_text.cpp

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2012-06-09 09:38:58 +00:00
/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2018 Jean-Pierre Charras, jp.charras at wanadoo.fr
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* Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
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* Copyright (C) 2012 Wayne Stambaugh <stambaughw@gmail.com>
* Copyright (C) 1992-2023 KiCad Developers, see AUTHORS.txt for contributors.
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*
* 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 <gr_basic.h>
#include <plotters/plotter.h>
#include <trigo.h>
#include <math/util.h> // for KiROUND
#include <font/font.h>
#include <callback_gal.h>
/**
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* @param aTextSize is the char size (height or width).
* @return the "best" value for a pen size to draw/plot a bold text.
*/
int GetPenSizeForBold( int aTextSize )
{
// Dick Hollenbeck's KiROUND R&D // This provides better project control over rounding to int from double // than wxRound() did. This scheme provides better logging in Debug builds // and it provides for compile time calculation of constants. #include <stdio.h> #include <assert.h> #include <limits.h> //-----<KiROUND KIT>------------------------------------------------------------ /** * KiROUND * rounds a floating point number to an int using * "round halfway cases away from zero". * In Debug build an assert fires if will not fit into an int. */ #if defined( DEBUG ) // DEBUG: a macro to capture line and file, then calls this inline static inline int KiRound( double v, int line, const char* filename ) { v = v < 0 ? v - 0.5 : v + 0.5; if( v > INT_MAX + 0.5 ) { printf( "%s: in file %s on line %d, val: %.16g too ' > 0 ' for int\n", __FUNCTION__, filename, line, v ); } else if( v < INT_MIN - 0.5 ) { printf( "%s: in file %s on line %d, val: %.16g too ' < 0 ' for int\n", __FUNCTION__, filename, line, v ); } return int( v ); } #define KiROUND( v ) KiRound( v, __LINE__, __FILE__ ) #else // RELEASE: a macro so compile can pre-compute constants. #define KiROUND( v ) int( (v) < 0 ? (v) - 0.5 : (v) + 0.5 ) #endif //-----</KiROUND KIT>----------------------------------------------------------- // Only a macro is compile time calculated, an inline function causes a static constructor // in a situation like this. // Therefore the Release build is best done with a MACRO not an inline function. int Computed = KiROUND( 14.3 * 8 ); int main( int argc, char** argv ) { for( double d = double(INT_MAX)-1; d < double(INT_MAX)+8; d += 2.0 ) { int i = KiROUND( d ); printf( "t: %d %.16g\n", i, d ); } return 0; }
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return KiROUND( aTextSize / 5.0 );
}
int GetPenSizeForDemiBold( int aTextSize )
{
return KiROUND( aTextSize / 6 );
}
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int GetPenSizeForBold( const wxSize& aTextSize )
{
return GetPenSizeForBold( std::min( aTextSize.x, aTextSize.y ) );
}
int GetPenSizeForDemiBold( const wxSize& aTextSize )
{
return GetPenSizeForDemiBold( std::min( aTextSize.x, aTextSize.y ) );
}
int GetPenSizeForNormal( int aTextSize )
{
return KiROUND( aTextSize / 8.0 );
}
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int GetPenSizeForNormal( const wxSize& aTextSize )
{
return GetPenSizeForNormal( std::min( aTextSize.x, aTextSize.y ) );
}
/**
* Pen width should not allow characters to become cluttered up in their own fatness. Normal
* text is normally around 15% the fontsize, and bold text around 20%. So we set a hard limit
* at 25%, and a secondary limit for non-decorative text that must be readable at small sizes
* at 18%.
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*
* @param aPenSize is the pen size to clamp.
* @param aSize is the character size (height or width).
* @param aBold use true if text accept bold pen size.
* @return the max pen size allowed.
*/
int Clamp_Text_PenSize( int aPenSize, int aSize, bool aStrict )
{
double scale = aStrict ? 0.18 : 0.25;
int maxWidth = KiROUND( (double) aSize * scale );
return std::min( aPenSize, maxWidth );
}
float Clamp_Text_PenSize( float aPenSize, int aSize, bool aStrict )
{
double scale = aStrict ? 0.18 : 0.25;
float maxWidth = (float) aSize * scale;
return std::min( aPenSize, maxWidth );
}
int Clamp_Text_PenSize( int aPenSize, const VECTOR2I& aSize, bool aStrict )
{
int size = std::min( std::abs( aSize.x ), std::abs( aSize.y ) );
return Clamp_Text_PenSize( aPenSize, size, aStrict );
}
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int GraphicTextWidth( const wxString& aText, KIFONT::FONT* aFont, const VECTOR2I& aSize,
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int aThickness, bool aBold, bool aItalic )
{
if( !aFont )
aFont = KIFONT::FONT::GetFont();
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return KiROUND( aFont->StringBoundaryLimits( aText, aSize, aThickness, aBold, aItalic ).x );
}
/**
* Print a graphic text through wxDC.
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*
* @param aDC is the current Device Context.
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* @param aPos is the text position (according to h_justify, v_justify).
* @param aColor is the text color.
* @param aText is the text to draw.
* @param aOrient is the angle.
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* @param aSize is the text size (size.x or size.y can be < 0 for mirrored texts).
* @param aH_justify is the horizontal justification (Left, center, right).
* @param aV_justify is the vertical justification (bottom, center, top).
* @param aWidth is the line width (pen width) (use default width if aWidth = 0).
* if width < 0 : draw segments in sketch mode, width = abs(width)
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* Use a value min(aSize.x, aSize.y) / 5 for a bold text.
* @param aItalic is the true to simulate an italic font.
* @param aBold use true to use a bold font. Useful only with default width value (aWidth = 0).
* @param aFont is the font to use, or nullptr for the KiCad stroke font
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*/
void GRPrintText( wxDC* aDC, const VECTOR2I& aPos, const COLOR4D& aColor, const wxString& aText,
const EDA_ANGLE& aOrient, const VECTOR2I& aSize,
enum GR_TEXT_H_ALIGN_T aH_justify, enum GR_TEXT_V_ALIGN_T aV_justify,
int aWidth, bool aItalic, bool aBold, KIFONT::FONT* aFont )
{
KIGFX::GAL_DISPLAY_OPTIONS empty_opts;
bool fill_mode = true;
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if( !aFont )
aFont = KIFONT::FONT::GetFont();
if( aWidth == 0 && aBold ) // Use default values if aWidth == 0
aWidth = GetPenSizeForBold( std::min( aSize.x, aSize.y ) );
if( aWidth < 0 )
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{
aWidth = -aWidth;
fill_mode = false;
}
CALLBACK_GAL callback_gal( empty_opts,
// Stroke callback
[&]( const VECTOR2I& aPt1, const VECTOR2I& aPt2 )
{
if( fill_mode )
GRLine( aDC, aPt1, aPt2, aWidth, aColor );
else
GRCSegm( aDC, aPt1, aPt2, aWidth, aColor );
},
// Polygon callback
[&]( const SHAPE_LINE_CHAIN& aPoly )
{
GRClosedPoly( aDC, aPoly.PointCount(), aPoly.CPoints().data(), true, aColor );
} );
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TEXT_ATTRIBUTES attributes;
attributes.m_Angle = aOrient;
attributes.m_StrokeWidth = aWidth;
attributes.m_Italic = aItalic;
attributes.m_Bold = aBold;
attributes.m_Halign = aH_justify;
attributes.m_Valign = aV_justify;
attributes.m_Size = aSize;
aFont->Draw( &callback_gal, aText, aPos, attributes );
}