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Stroked lines in Cairo GAL are always drawn at least 1 pixel wide.

This commit is contained in:
Maciej Suminski 2013-07-16 08:48:21 +02:00
parent 9374d642bf
commit 64122ae057
1 changed files with 14 additions and 2 deletions
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16
common/gal/cairo/cairo_gal.cpp
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@ -496,7 +496,12 @@ void CAIRO_GAL::SetLineWidth( double aLineWidth )
storePath(); storePath();
lineWidth = aLineWidth; lineWidth = aLineWidth;
cairo_set_line_width( cairoImage, aLineWidth );
// Make lines appear at least 1 pixel wide, no matter of zoom
double x = 1.0, y = 1.0;
cairo_device_to_user_distance( cairoImage, &x, &y );
double minWidth = std::min( fabs( x ), fabs( y ) );
cairo_set_line_width( cairoImage, std::max( aLineWidth, minWidth ) );
if( isGrouping ) if( isGrouping )
{ {
@ -716,9 +721,16 @@ void CAIRO_GAL::DrawGroup( int aGroupNumber )
break; break;
case CMD_SET_LINE_WIDTH: case CMD_SET_LINE_WIDTH:
cairo_set_line_width( cairoImage, it->arguments[0] ); {
// Make lines appear at least 1 pixel wide, no matter of zoom
double x = 1.0, y = 1.0;
cairo_device_to_user_distance( cairoImage, &x, &y );
double minWidth = std::min( fabs( x ), fabs( y ) );
cairo_set_line_width( cairoImage, std::max( it->arguments[0], minWidth ) );
}
break; break;
case CMD_STROKE_PATH: case CMD_STROKE_PATH:
cairo_set_source_rgb( cairoImage, strokeColor.r, strokeColor.g, strokeColor.b ); cairo_set_source_rgb( cairoImage, strokeColor.r, strokeColor.g, strokeColor.b );
cairo_append_path( cairoImage, it->cairoPath ); cairo_append_path( cairoImage, it->cairoPath );