src/apps/terminal/Globals.cpp

   1 /*
   2  * Copyright 2008, Ingo Weinhold, ingo_weinhold@gmx.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6 #include "Globals.h"
   7
   8 #include <math.h>
   9 #include <stddef.h>
  10
  11 #include <Font.h>
  12
  13
  14 BClipboard* gMouseClipboard = NULL;
  15
  16
  17 bool
  18 IsFontUsable(const BFont& font)
  19 {
  20         // TODO: If BFont::IsFullAndHalfFixed() was implemented, we could
  21         // use that. But I don't think it's easily implementable using
  22         // Freetype.
  23
  24         if (font.IsFixed())
  25                 return true;
  26
  27         // manually check if all applicable chars are the same width
  28         char buffer[2] = { ' ', 0 };
  29         int firstWidth = (int)ceilf(font.StringWidth(buffer));
  30
  31         // TODO: Workaround for broken fonts/font_subsystem
  32         if (firstWidth <= 0)
  33                 return false;
  34
  35         for (int c = ' ' + 1; c <= 0x7e; c++) {
  36                 buffer[0] = c;
  37                 int width = (int)ceilf(font.StringWidth(buffer));
  38
  39                 if (width != firstWidth)
  40                         return false;
  41         }
  42
  43         return true;
  44 }