Dogcows Code - chaz/openbox/blob - otk/label.cc

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #ifdef HAVE_CONFIG_H
   4 # include "../config.h"
   5 #endif
   6
   7 #include "label.hh"
   8
   9 namespace otk {
  10
  11 OtkLabel::OtkLabel(OtkWidget *parent)
  12   : OtkWidget(parent), _text("")
  13 {
  14   const ScreenInfo *info = OBDisplay::screenInfo(getScreen());
  15   _xftdraw = XftDrawCreate(OBDisplay::display, getWindow(), info->getVisual(),
  16                            info->getColormap());
  17
  18   setTexture(getStyle()->getLabelUnfocus());
  19 }
  20
  21 OtkLabel::~OtkLabel()
  22 {
  23   XftDrawDestroy(_xftdraw);
  24 }
  25
  26 void OtkLabel::update(void)
  27 {
  28   if (_dirty) {
  29     const BFont &ft = getStyle()->getFont();
  30     unsigned int bevel = getStyle()->getBevelWidth();
  31
  32     std::string t = _text; // the actual text to draw
  33     int x = bevel;         // x coord for the text
  34
  35     // find a string that will fit inside the area for text
  36     int max_length = width() - getBevelWidth() * 2;
  37     if (max_length <= 0) {
  38       t = ""; // can't fit anything
  39     } else {
  40       size_t text_len = t.size();
  41       int length;
  42
  43       do {
  44         t.resize(text_len);
  45         length = ft.measureString(t);
  46       } while (length > max_length && text_len-- > 0);
  47
  48       // justify the text
  49       switch (getStyle()->textJustify()) {
  50       case Style::RightJustify:
  51         x += max_length - length;
  52         break;
  53       case Style::CenterJustify:
  54         x += (max_length - length) / 2;
  55         break;
  56       case Style::LeftJustify:
  57         break;
  58       }
  59     }
  60
  61     OtkWidget::update();
  62
  63     ft.drawString(_xftdraw, x, bevel, *getStyle()->getTextUnfocus(), t);
  64   } else
  65     OtkWidget::update();
  66 }
  67
  68 }