---

drawing_area.cpp

Go to the documentation of this file.

#include "drawing_area.h"

namespace crs {

  drawing_area::drawing_area( const chtype Background, unsigned int Width, unsigned int Height ):
    width( Width ), height( Height ), background( Background ), buffer(0) {
      resize_buffer();
    }

  void drawing_area::resize_buffer() {
    delete [] buffer;
    buffer = new chtype[ width * height ];
    std::memset( buffer, background, width * height * sizeof( chtype ) );
  }

  void drawing_area::setText( const std::string &text, const unsigned int x, const unsigned int y ) {
    if( width * height == 0 )
      return;
    if( y >= height )
      return;
    unsigned int max = text.size() + x < width ? text.size() : width - x;
    for( unsigned int i=0; i < max; i++ )
      buffer[ x + i + ( y * width ) ] = text[i];
  }

  void drawing_area::drawHLine( const unsigned int x, const unsigned int y, unsigned int len, const chtype ch ) {
    if( width * height == 0 )
      return;
    if( x + len > width )
      len = width - x;
    chtype *foo = &buffer[ y * width + x ];
    for( unsigned int i = 0; i < len; i++ )
      *foo++ = ch;
  }

  void drawing_area::drawVLine( const unsigned int x, const unsigned int y, unsigned int height, const chtype ch ) {
    if( width * height == 0 )
      return;
    for( unsigned int i = 0; i < height; i++ ) {
      buffer[ x + ( i + y ) * width ] = ch;
    }
  }

  void drawing_area::fillRect( const unsigned int x1, const unsigned int y1, const unsigned int x2, const unsigned int y2, const chtype ch ) {
    if( width * height == 0 )
      return;
    if( x1 > x2 || y1 > y2 )
      throw bad_coords();
    for( unsigned int y = 1; y <= y2 - y1; y++ )
      drawHLine( x1, y, x2 - x1, ch );
  }

  void drawing_area::resize( const unsigned int Width, const unsigned int Height ) {
    width = Width;
    height = Height;
    resize_buffer();
  }

  void drawing_area::putPixel( const unsigned int x, const unsigned int y, const chtype ch ) {
    buffer[ x + ( y * width ) ] = ch;
  }

  void drawing_area::fill( const chtype ch ) {
    std::memset( buffer, ch, width * height * sizeof( chtype ) );
  }

}

---