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   setStyle(getStyle());
  19 }
  20
  21 OtkLabel::~OtkLabel()
  22 {
  23   XftDrawDestroy(_xftdraw);
  24 }
  25
  26 void OtkLabel::setStyle(Style *style)
  27 {
  28   OtkWidget::setStyle(style);
  29
  30   setTexture(getStyle()->getLabelUnfocus());
  31 }
  32
  33
  34 void OtkLabel::update(void)
  35 {
  36   if (_dirty) {
  37     const BFont &ft = getStyle()->getFont();
  38     unsigned int sidemargin = getStyle()->getBevelWidth() * 2;
  39
  40     std::string t = _text; // the actual text to draw
  41     int x = sidemargin;    // x coord for the text
  42
  43     // find a string that will fit inside the area for text
  44     int max_length = width() - sidemargin * 2;
  45     if (max_length <= 0) {
  46       t = ""; // can't fit anything
  47     } else {
  48       size_t text_len = t.size();
  49       int length;
  50
  51       do {
  52         t.resize(text_len);
  53         length = ft.measureString(t);
  54       } while (length > max_length && text_len-- > 0);
  55
  56       // justify the text
  57       switch (getStyle()->textJustify()) {
  58       case Style::RightJustify:
  59         x += max_length - length;
  60         break;
  61       case Style::CenterJustify:
  62         x += (max_length - length) / 2;
  63         break;
  64       case Style::LeftJustify:
  65         break;
  66       }
  67     }
  68
  69     OtkWidget::update();
  70
  71     ft.drawString(_xftdraw, x, 0, *getStyle()->getTextUnfocus(), t);
  72   } else
  73     OtkWidget::update();
  74 }
  75
  76 }