Make texts search-able in PDF files (using invisible texts behind stroked texts)
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jean-pierre charras
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9447181a08
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0999b5cb77
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@ -775,66 +775,67 @@ void PDF_PLOTTER::Text( const wxPoint& aPos,
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aMultilineAllowed = false; // the text has only one line.
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// Emit native PDF text (if requested)
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// Currently: does not work: disable it
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bool use_native = false; // = m_textMode != PLOTTEXTMODE_STROKE && !aMultilineAllowed;
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// Currently: is not supported, because only our stroke font is alloxed: disable it
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// However, shadowed texts (searchable texts) works reasonably well because
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// pixel accurate precision is not requested, so we add searchable texts
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// behind our stroked font texts
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bool use_native_font = false;
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// render_mode 0 shows the text, render_mode 3 is invisible
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int render_mode = use_native_font ? 0 : 3;
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if( use_native )
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const char *fontname = aItalic ? (aBold ? "/KicadFontBI" : "/KicadFontI")
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: (aBold ? "/KicadFontB" : "/KicadFont");
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// Compute the copious tranformation parameters of the Curent Transform Matrix
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double ctm_a, ctm_b, ctm_c, ctm_d, ctm_e, ctm_f;
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double wideningFactor, heightFactor;
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computeTextParameters( aPos, aText, aOrient, aSize, m_plotMirror, aH_justify,
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aV_justify, aWidth, aItalic, aBold,
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&wideningFactor, &ctm_a, &ctm_b, &ctm_c,
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&ctm_d, &ctm_e, &ctm_f, &heightFactor );
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SetColor( aColor );
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SetCurrentLineWidth( aWidth, aData );
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/* We use the full CTM instead of the text matrix because the same
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coordinate system will be used for the overlining. Also the %f
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for the trig part of the matrix to avoid %g going in exponential
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format (which is not supported)
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render_mode 0 shows the text, render_mode 3 is invisible */
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fprintf( workFile, "q %f %f %f %f %g %g cm BT %s %g Tf %d Tr %g Tz ",
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ctm_a, ctm_b, ctm_c, ctm_d, ctm_e, ctm_f,
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fontname, heightFactor, render_mode,
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wideningFactor * 100 );
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// The text must be escaped correctly
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fputsPostscriptString( workFile, aText );
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fputs( " Tj ET\n", workFile );
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// We are in text coordinates, plot the overbars, if we're not doing phantom text
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if( use_native_font )
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{
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const char *fontname = aItalic ? (aBold ? "/KicadFontBI" : "/KicadFontI")
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: (aBold ? "/KicadFontB" : "/KicadFont");
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// Compute the copious tranformation parameters
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double ctm_a, ctm_b, ctm_c, ctm_d, ctm_e, ctm_f;
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double wideningFactor, heightFactor;
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computeTextParameters( aPos, aText, aOrient, aSize, aH_justify,
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aV_justify, aWidth, aItalic, aBold,
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&wideningFactor, &ctm_a, &ctm_b, &ctm_c,
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&ctm_d, &ctm_e, &ctm_f, &heightFactor );
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SetColor( aColor );
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SetCurrentLineWidth( aWidth, aData );
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/* We use the full CTM instead of the text matrix because the same
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coordinate system will be used for the overlining. Also the %f
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for the trig part of the matrix to avoid %g going in exponential
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format (which is not supported)
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Rendermode 0 shows the text, rendermode 3 is invisible */
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fprintf( workFile, "q %f %f %f %f %g %g cm BT %s %g Tf %d Tr %g Tz ",
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ctm_a, ctm_b, ctm_c, ctm_d, ctm_e, ctm_f,
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fontname, heightFactor,
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(m_textMode == PLOTTEXTMODE_NATIVE) ? 0 : 3,
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wideningFactor * 100 );
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// The text must be escaped correctly
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fputsPostscriptString( workFile, aText );
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fputs( " Tj ET\n", workFile );
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/* We are still in text coordinates, plot the overbars (if we're
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* not doing phantom text) */
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if( m_textMode == PLOTTEXTMODE_NATIVE )
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std::vector<int> pos_pairs;
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postscriptOverlinePositions( aText, aSize.x, aItalic, aBold, &pos_pairs );
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int overbar_y = KiROUND( aSize.y * 1.1 );
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for( unsigned i = 0; i < pos_pairs.size(); i += 2)
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{
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std::vector<int> pos_pairs;
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postscriptOverlinePositions( aText, aSize.x, aItalic, aBold, &pos_pairs );
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int overbar_y = KiROUND( aSize.y * 1.1 );
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for( unsigned i = 0; i < pos_pairs.size(); i += 2)
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{
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/* This is a nontrivial situation: we are *not* in the user
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coordinate system, so the userToDeviceCoordinates function
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can't be used! Strange as it may seem, the userToDeviceSize
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is the right function to use here... */
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DPOINT dev_from = userToDeviceSize( wxSize( pos_pairs[i], overbar_y ) );
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DPOINT dev_to = userToDeviceSize( wxSize( pos_pairs[i + 1], overbar_y ) );
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fprintf( workFile, "%g %g m %g %g l ",
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dev_from.x, dev_from.y, dev_to.x, dev_to.y );
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}
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/* This is a nontrivial situation: we are *not* in the user
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coordinate system, so the userToDeviceCoordinates function
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can't be used! Strange as it may seem, the userToDeviceSize
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is the right function to use here... */
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DPOINT dev_from = userToDeviceSize( wxSize( pos_pairs[i], overbar_y ) );
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DPOINT dev_to = userToDeviceSize( wxSize( pos_pairs[i + 1], overbar_y ) );
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fprintf( workFile, "%g %g m %g %g l ",
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dev_from.x, dev_from.y, dev_to.x, dev_to.y );
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}
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// Stroke and restore the CTM
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fputs( "S Q\n", workFile );
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}
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// Stroke and restore the CTM
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fputs( "S Q\n", workFile );
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// Plot the stroked text (if requested)
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if( !use_native )
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if( !use_native_font )
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{
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PLOTTER::Text( aPos, aColor, aText, aOrient, aSize, aH_justify, aV_justify,
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aWidth, aItalic, aBold, aMultilineAllowed );
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@ -427,6 +427,7 @@ void PSLIKE_PLOTTER::computeTextParameters( const wxPoint& aPos,
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const wxString& aText,
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int aOrient,
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const wxSize& aSize,
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bool aMirror,
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enum EDA_TEXT_HJUSTIFY_T aH_justify,
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enum EDA_TEXT_VJUSTIFY_T aV_justify,
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int aWidth,
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@ -487,7 +488,14 @@ void PSLIKE_PLOTTER::computeTextParameters( const wxPoint& aPos,
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DPOINT sz_dev = userToDeviceSize( aSize );
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// Now returns the final values... the widening factor
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*wideningFactor = sz_dev.y / sz_dev.x;
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*wideningFactor = sz_dev.x / sz_dev.y;
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// Mirrored texts must be plotted as mirrored!
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if( m_plotMirror )
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{
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*wideningFactor = -*wideningFactor;
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aOrient = -aOrient;
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}
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// The CTM transformation matrix
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double alpha = DECIDEG2RAD( aOrient );
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@ -953,7 +961,7 @@ void PS_PLOTTER::Text( const wxPoint& aPos,
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// Compute the copious tranformation parameters
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double ctm_a, ctm_b, ctm_c, ctm_d, ctm_e, ctm_f;
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double wideningFactor, heightFactor;
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computeTextParameters( aPos, aText, aOrient, aSize, aH_justify,
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computeTextParameters( aPos, aText, aOrient, aSize, m_plotMirror, aH_justify,
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aV_justify, aWidth, aItalic, aBold,
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&wideningFactor, &ctm_a, &ctm_b, &ctm_c,
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&ctm_d, &ctm_e, &ctm_f, &heightFactor );
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@ -692,6 +692,7 @@ protected:
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const wxString& aText,
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int aOrient,
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const wxSize& aSize,
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bool aMirror,
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enum EDA_TEXT_HJUSTIFY_T aH_justify,
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enum EDA_TEXT_VJUSTIFY_T aV_justify,
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int aWidth,
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