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kicad/common/eda_text.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2016 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 2004-2016 KiCad Developers, see change_log.txt for contributors.
*
* 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
*/
/**
* @file eda_text.cpp
* @brief Implementation of base KiCad text object.
*/
#include <eda_text.h>
#include <drawtxt.h>
#include <macros.h>
#include <trigo.h> // RotatePoint
#include <class_drawpanel.h> // EDA_DRAW_PANEL
#include <basic_gal.h>
// Conversion to application internal units defined at build time.
#if defined( PCBNEW )
#include <class_board_item.h> // for FMT_IU
#elif defined( EESCHEMA )
#include <sch_item_struct.h> // for FMT_IU
#elif defined( GERBVIEW )
#elif defined( PL_EDITOR )
#include <base_units.h>
#define FMT_IU Double2Str
#else
#error "Cannot resolve units formatting due to no definition of EESCHEMA or PCBNEW."
#endif
#include <convert_to_biu.h>
EDA_TEXT::EDA_TEXT( const wxString& text )
{
m_Size.x = m_Size.y = Mils2iu( DEFAULT_SIZE_TEXT ); // Width and height of font.
m_Orient = 0; // Rotation angle in 0.1 degrees.
m_Attributs = 0;
m_Mirror = false; // display mirror if true
m_HJustify = GR_TEXT_HJUSTIFY_CENTER; // Default horizontal justification is centered.
m_VJustify = GR_TEXT_VJUSTIFY_CENTER; // Default vertical justification is centered.
m_Thickness = 0; // thickness
m_Italic = false; // true = italic shape.
m_Bold = false;
m_MultilineAllowed = false; // Set to true for multiline text.
m_Text = text;
}
EDA_TEXT::~EDA_TEXT()
{
}
void EDA_TEXT::SetOrientation( double aOrientation )
{
m_Orient = aOrientation;
NORMALIZE_ANGLE_360( m_Orient );
}
int EDA_TEXT::LenSize( const wxString& aLine ) const
{
basic_gal.SetFontItalic( m_Italic );
basic_gal.SetFontBold( m_Bold );
basic_gal.SetGlyphSize( VECTOR2D( m_Size ) );
VECTOR2D tsize = basic_gal.GetTextLineSize( aLine );
return KiROUND( tsize.x );
}
wxString EDA_TEXT::ShortenedShownText() const
{
wxString tmp = GetShownText();
tmp.Replace( wxT( "\n" ), wxT( " " ) );
tmp.Replace( wxT( "\r" ), wxT( " " ) );
tmp.Replace( wxT( "\t" ), wxT( " " ) );
if( tmp.Length() > 15 )
tmp = tmp.Left( 12 ) + wxT( "..." );
return tmp;
}
/*
* calculate the distance (pitch) between 2 text lines
* the distance includes the interline + room for chars like j { and [
* Is used for multiline texts, but also for single line texts, to calculate
* the text bounding box
*/
int EDA_TEXT::GetInterline( int aTextThickness ) const
{
int thickness = aTextThickness <= 0 ? m_Thickness : aTextThickness;
return KiROUND( KIGFX::STROKE_FONT::GetInterline( m_Size.y, thickness ) );
}
EDA_RECT EDA_TEXT::GetTextBox( int aLine, int aThickness, bool aInvertY ) const
{
EDA_RECT rect;
wxArrayString strings;
wxString text = GetShownText();
int thickness = ( aThickness < 0 ) ? m_Thickness : aThickness;
int linecount = 1;
bool hasOverBar = false; // true if the first line of text as an overbar
if( m_MultilineAllowed )
{
wxStringSplit( text, strings, '\n' );
if( strings.GetCount() ) // GetCount() == 0 for void strings
{
if( aLine >= 0 && (aLine < (int)strings.GetCount()) )
text = strings.Item( aLine );
else
text = strings.Item( 0 );
linecount = strings.GetCount();
}
}
// Search for overbar symbol. Only text is scanned,
// because only this line can change the bounding box
for( unsigned ii = 1; ii < text.size(); ii++ )
{
if( text[ii-1] == '~' && text[ii] != '~' )
{
hasOverBar = true;
break;
}
}
// calculate the H and V size
int dx = KiROUND( basic_gal.GetStrokeFont().ComputeStringBoundaryLimits(
text, VECTOR2D( m_Size ), double( thickness ) ).x );
int dy = GetInterline( thickness );
// Creates bounding box (rectangle) for an horizontal
// and left and top justified text. the bounding box will be moved later
// according to the actual text options
wxSize textsize = wxSize( dx, dy );
wxPoint pos = m_Pos;
if( aInvertY )
pos.y = -pos.y;
rect.SetOrigin( pos );
// The bbox vertical size returned by GetInterline( aThickness )
// includes letters like j and y and ] + interval between lines.
// The interval below the last line is not usefull, and we can use its half value
// as vertical margin above the text
// the full interval is roughly m_Size.y * 0.4 - aThickness/2
rect.Move( wxPoint( 0, thickness/4 - KiROUND( m_Size.y * 0.22 ) ) );
if( hasOverBar )
{ // A overbar adds an extra size to the text
// Height from the base line text of chars like [ or {
double curr_height = m_Size.y * 1.15;
int extra_height = KiROUND(
basic_gal.GetStrokeFont().ComputeOverbarVerticalPosition( m_Size.y, thickness ) - curr_height );
extra_height += thickness/2;
textsize.y += extra_height;
rect.Move( wxPoint( 0, -extra_height ) );
}
// for multiline texts and aLine < 0, merge all rectangles
// ( if aLine < 0, we want the full text bounding box )
if( m_MultilineAllowed && aLine < 0 )
{
for( unsigned ii = 1; ii < strings.GetCount(); ii++ )
{
text = strings.Item( ii );
dx = KiROUND( basic_gal.GetStrokeFont().ComputeStringBoundaryLimits(
text, VECTOR2D( m_Size ), double( thickness ) ).x );
textsize.x = std::max( textsize.x, dx );
textsize.y += dy;
}
}
rect.SetSize( textsize );
/* Now, calculate the rect origin, according to text justification
* At this point the rectangle origin is the text origin (m_Pos).
* This is true only for left and top text justified texts (using top to bottom Y axis
* orientation). and must be recalculated for others justifications
* also, note the V justification is relative to the first line
*/
switch( m_HJustify )
{
case GR_TEXT_HJUSTIFY_LEFT:
if( m_Mirror )
rect.SetX( rect.GetX() - rect.GetWidth() );
break;
case GR_TEXT_HJUSTIFY_CENTER:
rect.SetX( rect.GetX() - (rect.GetWidth() / 2) );
break;
case GR_TEXT_HJUSTIFY_RIGHT:
if( !m_Mirror )
rect.SetX( rect.GetX() - rect.GetWidth() );
break;
}
dy = m_Size.y + thickness;
switch( m_VJustify )
{
case GR_TEXT_VJUSTIFY_TOP:
break;
case GR_TEXT_VJUSTIFY_CENTER:
rect.SetY( rect.GetY() - ( dy / 2) );
break;
case GR_TEXT_VJUSTIFY_BOTTOM:
rect.SetY( rect.GetY() - dy );
break;
}
if( linecount > 1 )
{
int yoffset;
linecount -= 1;
switch( m_VJustify )
{
case GR_TEXT_VJUSTIFY_TOP:
break;
case GR_TEXT_VJUSTIFY_CENTER:
yoffset = linecount * GetInterline() / 2;
rect.SetY( rect.GetY() - yoffset );
break;
case GR_TEXT_VJUSTIFY_BOTTOM:
yoffset = linecount * GetInterline( aThickness );
rect.SetY( rect.GetY() - yoffset );
break;
}
}
rect.Normalize(); // Make h and v sizes always >= 0
return rect;
}
bool EDA_TEXT::TextHitTest( const wxPoint& aPoint, int aAccuracy ) const
{
EDA_RECT rect = GetTextBox( -1 ); // Get the full text area.
wxPoint location = aPoint;
rect.Inflate( aAccuracy );
RotatePoint( &location, m_Pos, -m_Orient );
return rect.Contains( location );
}
bool EDA_TEXT::TextHitTest( const EDA_RECT& aRect, bool aContains, int aAccuracy ) const
{
EDA_RECT rect = aRect;
rect.Inflate( aAccuracy );
if( aContains )
return rect.Contains( GetTextBox( -1 ) );
return rect.Intersects( GetTextBox( -1 ) );
}
void EDA_TEXT::Draw( EDA_RECT* aClipBox, wxDC* aDC, const wxPoint& aOffset,
EDA_COLOR_T aColor, GR_DRAWMODE aDrawMode,
EDA_DRAW_MODE_T aFillMode, EDA_COLOR_T aAnchor_color )
{
if( m_MultilineAllowed )
{
std::vector<wxPoint> positions;
wxArrayString strings;
wxStringSplit( GetShownText(), strings, '\n' );
positions.reserve( strings.Count() );
GetPositionsOfLinesOfMultilineText(positions, strings.Count() );
for( unsigned ii = 0; ii < strings.Count(); ii++ )
{
wxString& txt = strings.Item( ii );
drawOneLineOfText( aClipBox, aDC, aOffset, aColor,
aDrawMode, aFillMode, txt, positions[ii] );
}
}
else
drawOneLineOfText( aClipBox, aDC, aOffset, aColor,
aDrawMode, aFillMode, GetShownText(), m_Pos );
// Draw text anchor, if requested
if( aAnchor_color != UNSPECIFIED_COLOR )
{
GRDrawAnchor( aClipBox, aDC,
m_Pos.x + aOffset.x, m_Pos.y + aOffset.y,
DIM_ANCRE_TEXTE, aAnchor_color );
}
}
void EDA_TEXT::GetPositionsOfLinesOfMultilineText(
std::vector<wxPoint>& aPositions, int aLineCount ) const
{
wxPoint pos = m_Pos; // Position of first line of the
// multiline text according to
// the center of the multiline text block
wxPoint offset; // Offset to next line.
offset.y = GetInterline();
if( aLineCount > 1 )
{
switch( m_VJustify )
{
case GR_TEXT_VJUSTIFY_TOP:
break;
case GR_TEXT_VJUSTIFY_CENTER:
pos.y -= ( aLineCount - 1 ) * offset.y / 2;
break;
case GR_TEXT_VJUSTIFY_BOTTOM:
pos.y -= ( aLineCount - 1 ) * offset.y;
break;
}
}
// Rotate the position of the first line
// around the center of the multiline text block
RotatePoint( &pos, m_Pos, m_Orient );
// Rotate the offset lines to increase happened in the right direction
RotatePoint( &offset, m_Orient );
for( int ii = 0; ii < aLineCount; ii++ )
{
aPositions.push_back( pos );
pos += offset;
}
}
void EDA_TEXT::drawOneLineOfText( EDA_RECT* aClipBox, wxDC* aDC,
const wxPoint& aOffset, EDA_COLOR_T aColor,
GR_DRAWMODE aDrawMode, EDA_DRAW_MODE_T aFillMode,
const wxString& aText, const wxPoint &aPos )
{
int width = m_Thickness;
if( aDrawMode != UNSPECIFIED_DRAWMODE )
GRSetDrawMode( aDC, aDrawMode );
if( aFillMode == SKETCH )
width = -width;
wxSize size = m_Size;
if( m_Mirror )
size.x = -size.x;
DrawGraphicText( aClipBox, aDC, aOffset + aPos, aColor, aText, m_Orient, size,
m_HJustify, m_VJustify, width, m_Italic, m_Bold );
}
wxString EDA_TEXT::GetTextStyleName()
{
int style = 0;
if( m_Italic )
style = 1;
if( m_Bold )
style += 2;
wxString stylemsg[4] = {
_("Normal"),
_("Italic"),
_("Bold"),
_("Bold+Italic")
};
return stylemsg[style];
}
bool EDA_TEXT::IsDefaultFormatting() const
{
return ( ( m_Size.x == Mils2iu( DEFAULT_SIZE_TEXT ) )
&& ( m_Size.y == Mils2iu( DEFAULT_SIZE_TEXT ) )
&& ( m_Attributs == 0 )
&& ( m_Mirror == false )
&& ( m_HJustify == GR_TEXT_HJUSTIFY_CENTER )
&& ( m_VJustify == GR_TEXT_VJUSTIFY_CENTER )
&& ( m_Thickness == 0 )
&& ( m_Italic == false )
&& ( m_Bold == false )
&& ( m_MultilineAllowed == false ) );
}
void EDA_TEXT::Format( OUTPUTFORMATTER* aFormatter, int aNestLevel, int aControlBits ) const
throw( IO_ERROR )
{
#ifndef GERBVIEW // Gerbview does not use EDA_TEXT::Format
// and does not define FMT_IU, used here
// however this function should exist
if( !IsDefaultFormatting() )
{
aFormatter->Print( aNestLevel+1, "(effects" );
if( ( m_Size.x != Mils2iu( DEFAULT_SIZE_TEXT ) )
|| ( m_Size.y != Mils2iu( DEFAULT_SIZE_TEXT ) )
|| ( m_Thickness != 0 ) || m_Bold || m_Italic )
{
aFormatter->Print( 0, " (font" );
// Add font support here at some point in the future.
if( ( m_Size.x != Mils2iu( DEFAULT_SIZE_TEXT ) )
|| ( m_Size.y != Mils2iu( DEFAULT_SIZE_TEXT ) ) )
aFormatter->Print( 0, " (size %s %s)", FMT_IU( m_Size.GetHeight() ).c_str(),
FMT_IU( m_Size.GetWidth() ).c_str() );
if( m_Thickness != 0 )
aFormatter->Print( 0, " (thickness %s)", FMT_IU( GetThickness() ).c_str() );
if( m_Bold )
aFormatter->Print( 0, " bold" );
if( IsItalic() )
aFormatter->Print( 0, " italic" );
aFormatter->Print( 0, ")");
}
if( m_Mirror || ( m_HJustify != GR_TEXT_HJUSTIFY_CENTER )
|| ( m_VJustify != GR_TEXT_VJUSTIFY_CENTER ) )
{
aFormatter->Print( 0, " (justify");
if( m_HJustify != GR_TEXT_HJUSTIFY_CENTER )
aFormatter->Print( 0, (m_HJustify == GR_TEXT_HJUSTIFY_LEFT) ? " left" : " right" );
if( m_VJustify != GR_TEXT_VJUSTIFY_CENTER )
aFormatter->Print( 0, (m_VJustify == GR_TEXT_VJUSTIFY_TOP) ? " top" : " bottom" );
if( m_Mirror )
aFormatter->Print( 0, " mirror" );
aFormatter->Print( 0, ")" );
}
// As of now the only place this is used is in Eeschema to hide or show the text.
if( m_Attributs )
aFormatter->Print( 0, " hide" );
aFormatter->Print( 0, ")\n" );
}
#endif
}
// Convert the text shape to a list of segment
// each segment is stored as 2 wxPoints: its starting point and its ending point
// we are using DrawGraphicText to create the segments.
// and therefore a call-back function is needed
static std::vector<wxPoint>* s_cornerBuffer;
// This is a call back function, used by DrawGraphicText to put each segment in buffer
static void addTextSegmToBuffer( int x0, int y0, int xf, int yf )
{
s_cornerBuffer->push_back( wxPoint( x0, y0 ) );
s_cornerBuffer->push_back( wxPoint( xf, yf ) );
}
void EDA_TEXT::TransformTextShapeToSegmentList( std::vector<wxPoint>& aCornerBuffer ) const
{
wxSize size = GetSize();
if( IsMirrored() )
size.x = -size.x;
s_cornerBuffer = &aCornerBuffer;
EDA_COLOR_T color = BLACK; // not actually used, but needed by DrawGraphicText
if( IsMultilineAllowed() )
{
wxArrayString strings_list;
wxStringSplit( GetShownText(), strings_list, wxChar('\n') );
std::vector<wxPoint> positions;
positions.reserve( strings_list.Count() );
GetPositionsOfLinesOfMultilineText( positions,strings_list.Count() );
for( unsigned ii = 0; ii < strings_list.Count(); ii++ )
{
wxString txt = strings_list.Item( ii );
DrawGraphicText( NULL, NULL, positions[ii], color,
txt, GetOrientation(), size,
GetHorizJustify(), GetVertJustify(),
GetThickness(), IsItalic(),
true, addTextSegmToBuffer );
}
}
else
{
DrawGraphicText( NULL, NULL, GetTextPosition(), color,
GetText(), GetOrientation(), size,
GetHorizJustify(), GetVertJustify(),
GetThickness(), IsItalic(),
true, addTextSegmToBuffer );
}
}
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