cppconsui/Label.cpp

   1 // Copyright (C) 2007 Mark Pustjens <pustjens@dds.nl>
   2 // Copyright (C) 2010-2015 Petr Pavlu <setup@dagobah.cz>
   3 //
   4 // This file is part of CenterIM.
   5 //
   6 // CenterIM is free software; you can redistribute it and/or modify
   7 // it under the terms of the GNU General Public License as published by
   8 // the Free Software Foundation; either version 2 of the License, or
   9 // (at your option) any later version.
  10 //
  11 // CenterIM is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License
  17 // along with CenterIM.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 /// @file
  20 /// Label class implementation.
  21 ///
  22 /// @ingroup cppconsui
  23
  24 #include "Label.h"
  25
  26 #include "ColorScheme.h"
  27
  28 #include <cstring>
  29
  30 namespace CppConsUI {
  31
  32 Label::Label(int w, int h, const char *text) : Widget(w, h), text_(nullptr)
  33 {
  34   setText(text);
  35 }
  36
  37 Label::Label(const char *text) : Widget(AUTOSIZE, AUTOSIZE), text_(nullptr)
  38 {
  39   setText(text);
  40 }
  41
  42 Label::~Label()
  43 {
  44   delete[] text_;
  45 }
  46
  47 int Label::draw(Curses::ViewPort area, Error &error)
  48 {
  49   int attrs;
  50   DRAW(getAttributes(ColorScheme::PROPERTY_LABEL_TEXT, &attrs, error));
  51   DRAW(area.attrOn(attrs, error));
  52
  53   // Print text.
  54   int y = 0;
  55   const char *start, *end;
  56   start = end = text_;
  57   int printed;
  58   while (*end != '\0') {
  59     if (*end == '\n') {
  60       DRAW(area.addString(
  61         0, y, real_width_ * (real_height_ - y), start, end, error, &printed));
  62       y += (printed / real_width_) + 1;
  63       start = end + 1;
  64     }
  65     ++end;
  66   }
  67   DRAW(
  68     area.addString(0, y, real_width_ * (real_height_ - y), start, end, error));
  69
  70   DRAW(area.attrOff(attrs, error));
  71
  72   return 0;
  73 }
  74
  75 void Label::setText(const char *new_text)
  76 {
  77   std::size_t size = 1;
  78   if (new_text != nullptr)
  79     size += std::strlen(new_text);
  80   auto new_storage = new char[size];
  81   if (new_text != nullptr)
  82     std::strcpy(new_storage, new_text);
  83   else
  84     new_storage[0] = '\0';
  85
  86   delete[] text_;
  87   text_ = new_storage;
  88
  89   // Update wish height.
  90   int h = 1;
  91   for (const char *cur = text_; *cur; ++cur)
  92     if (*cur == '\n')
  93       ++h;
  94   setWishHeight(h);
  95
  96   redraw();
  97 }
  98
  99 } // namespace CppConsUI
 100
 101 // vim: set tabstop=2 shiftwidth=2 textwidth=80 expandtab: