Dogcows Code - chaz/openbox/blob - 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 Label::Label(Widget *parent)
  12   : Widget(parent), _text("")
  13 {
  14   const ScreenInfo *info = Display::screenInfo(screen());
  15   _xftdraw = XftDrawCreate(Display::display, window(), info->visual(),
  16                            info->colormap());
  17 }
  18
  19 Label::~Label()
  20 {
  21   XftDrawDestroy(_xftdraw);
  22 }
  23
  24 void Label::setStyle(Style *style)
  25 {
  26   Widget::setStyle(style);
  27
  28   setTexture(style->getLabelUnfocus());
  29 }
  30
  31
  32 void Label::update(void)
  33 {
  34   if (_dirty) {
  35     const Font *ft = style()->getFont();
  36     unsigned int sidemargin = style()->getBevelWidth() * 2;
  37
  38     userstring t = _text; // the actual text to draw
  39     int x = sidemargin;    // x coord for the text
  40
  41     // find a string that will fit inside the area for text
  42     int max_length = width() - sidemargin * 2;
  43     if (max_length <= 0) {
  44       t = ""; // can't fit anything
  45     } else {
  46       size_t text_len = t.size();
  47       int length;
  48
  49       do {
  50         t.resize(text_len);
  51         length = ft->measureString(t);
  52       } while (length > max_length && text_len-- > 0);
  53
  54       // justify the text
  55       switch (style()->textJustify()) {
  56       case Style::RightJustify:
  57         x += max_length - length;
  58         break;
  59       case Style::CenterJustify:
  60         x += (max_length - length) / 2;
  61         break;
  62       case Style::LeftJustify:
  63         break;
  64       }
  65     }
  66
  67     Widget::update();
  68
  69     ft->drawString(_xftdraw, x, 0, *style()->getTextUnfocus(), t);
  70   } else
  71     Widget::update();
  72 }
  73
  74 }