301 lines
8.6 KiB
C++
301 lines
8.6 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 Kicad Developers, see change_log.txt for contributors.
|
|
*
|
|
* Stroke font 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 <gal/stroke_font.h>
|
|
#include <gal/graphics_abstraction_layer.h>
|
|
|
|
using namespace KiGfx;
|
|
|
|
STROKE_FONT::STROKE_FONT( GAL* aGal ) :
|
|
m_gal( aGal ),
|
|
m_bold( false ),
|
|
m_italic( false ),
|
|
m_mirrored( false )
|
|
{
|
|
// Default values
|
|
m_scaleFactor = 1.0 / 21.0;
|
|
m_glyphSize = VECTOR2D( 10.0, 10.0 );
|
|
m_verticalJustify = GR_TEXT_VJUSTIFY_BOTTOM;
|
|
m_horizontalJustify = GR_TEXT_HJUSTIFY_LEFT;
|
|
}
|
|
|
|
|
|
STROKE_FONT::~STROKE_FONT()
|
|
{
|
|
}
|
|
|
|
|
|
bool STROKE_FONT::LoadNewStrokeFont( const char* const aNewStrokeFont[], int aNewStrokeFontSize )
|
|
{
|
|
m_glyphs.clear();
|
|
m_glyphBoundingBoxes.clear();
|
|
|
|
for( int j = 0; j < aNewStrokeFontSize; j++ )
|
|
{
|
|
Glyph glyph;
|
|
double glyphStartX = 0.0;
|
|
double glyphEndX = 0.0;
|
|
VECTOR2D glyphBoundingX;
|
|
|
|
std::deque<VECTOR2D> pointList;
|
|
|
|
int i = 0;
|
|
|
|
while( aNewStrokeFont[j][i] )
|
|
{
|
|
VECTOR2D point( 0.0, 0.0 );
|
|
char coordinate[2] = { 0, };
|
|
|
|
for( int k = 0; k < 2; k++ )
|
|
{
|
|
coordinate[k] = aNewStrokeFont[j][i + k];
|
|
}
|
|
|
|
if( i < 2 )
|
|
{
|
|
// The first two values contain the width of the char
|
|
glyphStartX = coordinate[0] - 'R';
|
|
glyphEndX = coordinate[1] - 'R';
|
|
glyphBoundingX = VECTOR2D( 0, glyphEndX - glyphStartX );
|
|
}
|
|
else if( ( coordinate[0] == ' ' ) && ( coordinate[1] == 'R' ) )
|
|
{
|
|
// Raise pen
|
|
if( pointList.size() > 0 )
|
|
glyph.push_back( pointList );
|
|
|
|
pointList.clear();
|
|
}
|
|
else
|
|
{
|
|
// Every coordinate description of the Hershey format has an offset,
|
|
// it has to be subtracted
|
|
point.x = (double) ( coordinate[0] - 'R' ) - glyphStartX;
|
|
point.y = (double) ( coordinate[1] - 'R' ) - 11.0;
|
|
pointList.push_back( point );
|
|
}
|
|
|
|
i += 2;
|
|
}
|
|
|
|
if( pointList.size() > 0 )
|
|
glyph.push_back( pointList );
|
|
|
|
m_glyphs.push_back( glyph );
|
|
|
|
// Compute the bounding box of the glyph
|
|
m_glyphBoundingBoxes.push_back( computeBoundingBox( glyph, glyphBoundingX ) );
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
BOX2D STROKE_FONT::computeBoundingBox( const Glyph& aGlyph, const VECTOR2D& aGlyphBoundingX ) const
|
|
{
|
|
BOX2D boundingBox;
|
|
|
|
std::deque<VECTOR2D> boundingPoints;
|
|
|
|
boundingPoints.push_back( VECTOR2D( aGlyphBoundingX.x, 0 ) );
|
|
boundingPoints.push_back( VECTOR2D( aGlyphBoundingX.y, 0 ) );
|
|
|
|
for( Glyph::const_iterator pointListIt = aGlyph.begin(); pointListIt != aGlyph.end(); ++pointListIt )
|
|
{
|
|
for( std::deque<VECTOR2D>::const_iterator pointIt = pointListIt->begin();
|
|
pointIt != pointListIt->end(); ++pointIt )
|
|
{
|
|
boundingPoints.push_back( VECTOR2D( aGlyphBoundingX.x, pointIt->y ) );
|
|
}
|
|
}
|
|
|
|
boundingBox.Compute( boundingPoints );
|
|
|
|
return boundingBox;
|
|
}
|
|
|
|
|
|
void STROKE_FONT::Draw( std::string aText, const VECTOR2D& aPosition, double aRotationAngle )
|
|
{
|
|
// Split multiline strings into separate ones and draw line by line
|
|
size_t newlinePos = aText.find( '\n' );
|
|
|
|
if( newlinePos != std::string::npos )
|
|
{
|
|
VECTOR2D nextlinePosition( aPosition );
|
|
nextlinePosition += VECTOR2D( 0.0, m_glyphSize.y * 1.6 ); // FIXME remove magic number
|
|
|
|
Draw( aText.substr( newlinePos + 1 ), nextlinePosition, aRotationAngle );
|
|
aText = aText.substr( 0, newlinePos );
|
|
}
|
|
|
|
// Compute the text size
|
|
VECTOR2D textsize = computeTextSize( aText );
|
|
|
|
// By default overbar is turned off
|
|
m_overbar = false;
|
|
|
|
// Context needs to be saved before any transformations
|
|
m_gal->Save();
|
|
|
|
m_gal->Translate( aPosition );
|
|
m_gal->Rotate( -aRotationAngle );
|
|
|
|
// Adjust the text position to the given alignment
|
|
switch( m_horizontalJustify )
|
|
{
|
|
case GR_TEXT_HJUSTIFY_CENTER:
|
|
m_gal->Translate( VECTOR2D( -textsize.x / 2, 0 ) );
|
|
break;
|
|
|
|
case GR_TEXT_HJUSTIFY_RIGHT:
|
|
if( !m_mirrored )
|
|
m_gal->Translate( VECTOR2D( -textsize.x, 0 ) );
|
|
break;
|
|
|
|
case GR_TEXT_HJUSTIFY_LEFT:
|
|
if( m_mirrored )
|
|
m_gal->Translate( VECTOR2D( -textsize.x, 0 ) );
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
switch( m_verticalJustify )
|
|
{
|
|
case GR_TEXT_VJUSTIFY_CENTER:
|
|
m_gal->Translate( VECTOR2D( 0, textsize.y / 2 ) );
|
|
break;
|
|
|
|
case GR_TEXT_VJUSTIFY_TOP:
|
|
m_gal->Translate( VECTOR2D( 0, textsize.y ) );
|
|
break;
|
|
|
|
case GR_TEXT_VJUSTIFY_BOTTOM:
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
double xOffset, glyphSizeX;
|
|
|
|
if( m_mirrored )
|
|
{
|
|
// In case of mirrored text invert the X scale of points and their X direction
|
|
// (m_glyphSize.x) and start drawing from the position where text normally should end
|
|
// (textsize.x)
|
|
xOffset = textsize.x;
|
|
glyphSizeX = -m_glyphSize.x;
|
|
}
|
|
else
|
|
{
|
|
xOffset = 0.0;
|
|
glyphSizeX = m_glyphSize.x;
|
|
}
|
|
double scaleY = m_scaleFactor * m_glyphSize.y;
|
|
double scaleX = m_scaleFactor * glyphSizeX;
|
|
|
|
m_gal->SetIsStroke( true );
|
|
m_gal->SetIsFill( false );
|
|
|
|
if( m_bold )
|
|
{
|
|
m_gal->SetLineWidth( m_gal->GetLineWidth() * 1.3 );
|
|
}
|
|
|
|
for( std::string::const_iterator chIt = aText.begin(); chIt != aText.end(); chIt++ )
|
|
{
|
|
if( *chIt == '~' )
|
|
{
|
|
m_overbar = !m_overbar;
|
|
continue;
|
|
}
|
|
|
|
GlyphList::iterator glyphIt = m_glyphs.begin();
|
|
std::deque<BOX2D>::iterator bbIt = m_glyphBoundingBoxes.begin();
|
|
|
|
advance( glyphIt, (int) ( *chIt ) - (int) ' ' );
|
|
advance( bbIt, (int) ( *chIt ) - (int) ' ' );
|
|
|
|
Glyph glyph = *glyphIt;
|
|
|
|
for( Glyph::iterator pointListIt = glyph.begin(); pointListIt != glyph.end();
|
|
pointListIt++ )
|
|
{
|
|
std::deque<VECTOR2D> pointListScaled;
|
|
|
|
for( std::deque<VECTOR2D>::iterator pointIt = pointListIt->begin();
|
|
pointIt != pointListIt->end(); pointIt++ )
|
|
{
|
|
VECTOR2D pointPos( pointIt->x * scaleX + xOffset, pointIt->y * scaleY );
|
|
|
|
if( m_italic )
|
|
{
|
|
// FIXME should be done other way - referring to the lowest Y value of point
|
|
// because now italic fonts are translated a bit
|
|
pointPos.x += pointPos.y * 0.1;
|
|
}
|
|
|
|
pointListScaled.push_back( pointPos );
|
|
}
|
|
|
|
m_gal->DrawPolyline( pointListScaled );
|
|
}
|
|
|
|
if( m_overbar )
|
|
{
|
|
VECTOR2D startOverbar( xOffset, -textsize.y * 1.2 );
|
|
VECTOR2D endOverbar( xOffset + m_scaleFactor * glyphSizeX * bbIt->GetEnd().x,
|
|
-textsize.y * 1.2 );
|
|
m_gal->DrawLine( startOverbar, endOverbar );
|
|
}
|
|
|
|
xOffset += m_scaleFactor * glyphSizeX * bbIt->GetEnd().x;
|
|
}
|
|
|
|
m_gal->Restore();
|
|
}
|
|
|
|
|
|
VECTOR2D STROKE_FONT::computeTextSize( const std::string& aText ) const
|
|
{
|
|
VECTOR2D result = VECTOR2D( 0.0, m_glyphSize.y );
|
|
|
|
for( std::string::const_iterator chIt = aText.begin(); chIt != aText.end(); chIt++ )
|
|
{
|
|
if( *chIt == '~' )
|
|
continue;
|
|
|
|
std::deque<BOX2D>::const_iterator bbIt = m_glyphBoundingBoxes.begin();
|
|
advance( bbIt, (int) ( *chIt ) - (int) ' ' );
|
|
result.x += m_scaleFactor * m_glyphSize.x * bbIt->GetEnd().x;
|
|
}
|
|
|
|
return result;
|
|
}
|