Text Class Reference

#include <text.h>

Inheritance diagram for Text:

[legend]Collaboration diagram for Text:

[legend]List of all members.

Public Member Functions
	Text (const std::string &new_txt, Color new_color=white_color, Font *new_font=NULL, bool shadowed=true)
	~Text ()
void	DrawCenter (int x, int y) const
void	DrawCenter (const Point2i &position) const
void	DrawTopLeft (int x, int y) const
void	DrawTopLeft (const Point2i &position) const
void	DrawTopRight (int x, int y) const
void	DrawCenterTop (int x, int y) const
void	DrawCenterOnMap (int x, int y) const
void	DrawTopLeftOnMap (int x, int y) const
void	DrawCenterTopOnMap (int x, int y) const
void	Set (const std::string &new_txt)
const std::string &	GetText () const
void	SetColor (const Color &new_color)
void	SetMaxWidth (uint max_w)
int	GetWidth () const
int	GetHeight () const
Private Member Functions
void	Render ()
void	RenderMultiLines ()
Private Attributes
Surface	surf
Surface	background
std::string	txt
Font *	font
Color	color
bool	shadowed
uint	bg_offset
uint	max_width

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Detailed Description

Definition at line 28 of file text.h.

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Constructor & Destructor Documentation

Text::Text	(	const std::string &	new_txt,
		Color	new_color = white_color,
		Font *	new_font = NULL,
		bool	shadowed = true
	)

Definition at line 34 of file text.cpp.

{
                                
  if( new_font == NULL )
    new_font = Font::GetInstance(Font::FONT_SMALL);
        
  txt = new_txt;
  color = new_color;
  font = new_font;
  this->shadowed = shadowed;

  if( shadowed ){
    int width = font->GetWidth("x");
    bg_offset = (unsigned int)width/8; // shadow offset = 0.125ex
    if (bg_offset < 1) bg_offset = 1;
  }
  else {
    bg_offset = 0;
  }
  max_width = 0;

  Render();
}

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Text::~Text

(

)

Definition at line 59 of file text.cpp.

{
}

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Member Function Documentation

void Text::DrawCenter

(

const Point2i &

position

)

const

Definition at line 219 of file text.cpp.

{
  DrawCenter(position.GetX(), position.GetY());
}

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void Text::DrawCenter	(	int	x,
		int	y
	)			const

Definition at line 214 of file text.cpp.

{ 
  DrawTopLeft(x - surf.GetWidth() / 2, y - surf.GetHeight() / 2);
}

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void Text::DrawCenterOnMap	(	int	x,
		int	y
	)			const

Definition at line 263 of file text.cpp.

{
  DrawTopLeftOnMap(x - surf.GetWidth()/2, y - surf.GetHeight()/2 );
}

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void Text::DrawCenterTop	(	int	x,
		int	y
	)			const

Definition at line 229 of file text.cpp.

{ 
  DrawTopLeft( x - surf.GetWidth()/2, y);
}

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void Text::DrawCenterTopOnMap	(	int	x,
		int	y
	)			const

Definition at line 268 of file text.cpp.

{
  DrawTopLeftOnMap(x - surf.GetWidth()/2, y);
}

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void Text::DrawTopLeft

(

const Point2i &

position

)

const

Definition at line 234 of file text.cpp.

{
  if(txt == "") return;

  Rectanglei dst_rect(position, surf.GetSize());
  AppWormux * app = AppWormux::GetInstance();

  if(shadowed){
    Rectanglei shad_rect;
    
    shad_rect.SetPosition(dst_rect.GetPosition() + bg_offset);
    shad_rect.SetSize(background.GetWidth(), background.GetHeight() );
    
    app->video.window.Blit(background, shad_rect.GetPosition());
    app->video.window.Blit(surf, dst_rect.GetPosition());
                
    world.ToRedrawOnScreen(Rectanglei(dst_rect.GetPosition(),
                                      shad_rect.GetSize() + bg_offset));
  }else{
    app->video.window.Blit(surf, dst_rect.GetPosition());
    world.ToRedrawOnScreen(dst_rect);
  }             
}

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void Text::DrawTopLeft	(	int	x,
		int	y
	)			const

Definition at line 258 of file text.cpp.

{ 
  DrawTopLeft( Point2i(x, y) );
}

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void Text::DrawTopLeftOnMap	(	int	x,
		int	y
	)			const

Definition at line 273 of file text.cpp.

{
  if(shadowed)
    AbsoluteDraw(background, Point2i(bg_offset + x, bg_offset + y) );
  AbsoluteDraw(surf, Point2i(x, y) );
}

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void Text::DrawTopRight	(	int	x,
		int	y
	)			const

Definition at line 224 of file text.cpp.

{ 
  DrawTopLeft( x - surf.GetWidth(), y);
}

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int Text::GetHeight

(

)

const

Definition at line 296 of file text.cpp.

{
  if(txt=="") return 0;
  return surf.GetHeight();
}

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const std::string & Text::GetText

(

)

const

Definition at line 199 of file text.cpp.

{
  return txt;
}

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int Text::GetWidth

(

)

const

Definition at line 290 of file text.cpp.

{
  if(txt=="") return 0;
  return surf.GetWidth();
}

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void Text::Render

(

)

[private]

Definition at line 63 of file text.cpp.

{
  if (txt=="") return;

  if (max_width != 0) {
    RenderMultiLines();
    return;
  }

  surf = font->CreateSurface(txt, color);
  if ( shadowed ) {
    background = font->CreateSurface(txt, black_color);
  }
}

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void Text::RenderMultiLines

(

)

[private]

Definition at line 78 of file text.cpp.

{
  if (txt=="") return;

  // Make a first try
  if (font->GetWidth(txt) < int(max_width)) {
    surf = font->CreateSurface(txt, color);
    if ( shadowed ) {
      background = font->CreateSurface(txt, black_color);
    }
    return;
  }

  // Cut the text on space
  std::vector<std::string> tokens;
  std::string::size_type old_pos = 0, current_pos = 0;

  while ( old_pos < txt.size() &&
          (current_pos = txt.find_first_of(" ", old_pos)) != std::string::npos )
    {
      std::string tmp = txt.substr(old_pos, current_pos-old_pos);
      if (tmp != " ") {
        tokens.push_back(tmp);
      }
      old_pos = current_pos+1;
    }
  tokens.push_back(txt.substr(old_pos));

  // Compute size
  std::vector<std::string> lines;
  uint index_lines = 0;
  uint index_word = 0;

  while (index_word < tokens.size()) 
    {
      if ( lines.size() == index_lines ) {
        // first word of a line
        lines.push_back(tokens.at(index_word));

      } else {

        if ( font->GetWidth(lines.at(index_lines)+" "+tokens.at(index_word)) > int(max_width) ) {
          
          // line will be too long : prepare next line!
          index_lines++;
          index_word--;
        } else {
          lines.at(index_lines) += " " + tokens.at(index_word);
        }
        
      }
      
      index_word++;
    }
  
  // really Render !

  // First, creating a destination surface
  Point2i size(max_width, (font->GetHeight()+2) * lines.size());
  surf.NewSurface(size, SDL_SWSURFACE|SDL_SRCALPHA, true);
  surf = surf.DisplayFormatAlpha();

  // Puting pixels of each image in destination surface
  surf.Lock();

  // for each lines
  for (uint i = 0; i < lines.size(); i++) {
    Surface tmp=(font->CreateSurface(lines.at(i), color)).DisplayFormatAlpha();
    tmp.Lock();

    // for each pixel lines of a source image
    for (int x=0; x < tmp.GetWidth() && x < int(max_width); x++) 
      { // for each pixel rows of a source image
        for (int y=0; y < tmp.GetHeight(); y++) 
          { 
            surf.PutPixel(x, ((font->GetHeight()+2)*i)+y, 
                          tmp.GetPixel(x, y));
          }
      }
    tmp.Unlock();
  }
  surf.Unlock();

  // Render the shadow !
  if (!shadowed) return;

  background.NewSurface(size, SDL_SWSURFACE|SDL_SRCALPHA, true);
  background = background.DisplayFormatAlpha();

  // Puting pixels of each image in destination surface
  background.Lock();

  // for each lines
  for (uint i = 0; i < lines.size(); i++) {
    Surface tmp=(font->CreateSurface(lines.at(i), black_color)).DisplayFormatAlpha();
    tmp.Lock();

    // for each pixel lines of a source image
    for (int x=0; x < tmp.GetWidth() && x < int(max_width); x++) 
      { // for each pixel rows of a source image
        for (int y=0; y < tmp.GetHeight(); y++) 
          { 
            background.PutPixel(x, ((font->GetHeight()+2)*i)+y, 
                                tmp.GetPixel(x, y));
          }
      }
    tmp.Unlock();
  }
  background.Unlock();
}

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void Text::Set

(

const std::string &

new_txt

)

Definition at line 189 of file text.cpp.

{
  if(txt == new_txt)
    return;

  txt = new_txt;
        
  Render();
}

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void Text::SetColor

(

const Color &

new_color

)

Definition at line 204 of file text.cpp.

{
  if(color == new_color)
    return;

  color = new_color;
        
  Render();
}

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void Text::SetMaxWidth

(

uint

max_w

)

Definition at line 280 of file text.cpp.

{
  if (max_width == max_w)
    return;

  max_width = max_w;

  Render();
}

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Member Data Documentation

Surface Text::background [private]

Definition at line 31 of file text.h.

uint Text::bg_offset [private]

Definition at line 36 of file text.h.

Color Text::color [private]

Definition at line 34 of file text.h.

Font* Text::font [private]

Definition at line 33 of file text.h.

uint Text::max_width [private]

Definition at line 37 of file text.h.

bool Text::shadowed [private]

Definition at line 35 of file text.h.

Surface Text::surf [private]

Definition at line 30 of file text.h.

std::string Text::txt [private]

Definition at line 32 of file text.h.

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The documentation for this class was generated from the following files:

• src/graphic/text.h
• src/graphic/text.cpp

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