test/src/ViewImage.cpp

   1 /*
   2 Copyright_License {
   3
   4   XCSoar Glide Computer - http://www.xcsoar.org/
   5   Copyright (C) 2000-2013 The XCSoar Project
   6   A detailed list of copyright holders can be found in the file "AUTHORS".
   7
   8   This program is free software; you can redistribute it and/or
   9   modify it under the terms of the GNU General Public License
  10   as published by the Free Software Foundation; either version 2
  11   of the License, or (at your option) any later version.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with this program; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 }
  22 */
  23
  24 #define ENABLE_SCREEN
  25 #define ENABLE_CMDLINE
  26 #define USAGE "PATH"
  27
  28 #include "Main.hpp"
  29 #include "Screen/SingleWindow.hpp"
  30 #include "Screen/Bitmap.hpp"
  31 #include "Screen/Canvas.hpp"
  32
  33 class TestWindow : public SingleWindow {
  34   Bitmap bitmap;
  35
  36 public:
  37   bool LoadFile(const TCHAR *path) {
  38     Invalidate();
  39     return bitmap.LoadFile(path);
  40   }
  41
  42 protected:
  43   virtual void OnPaint(Canvas &canvas) override {
  44     if (bitmap.IsDefined())
  45       canvas.Stretch(bitmap);
  46     else
  47       canvas.ClearWhite();
  48   }
  49 };
  50
  51 static tstring path;
  52
  53 static void
  54 ParseCommandLine(Args &args)
  55 {
  56   path = args.ExpectNextT();
  57 }
  58
  59 static void
  60 Main()
  61 {
  62   TestWindow window;
  63   window.Create(_T("ViewImage"), {640, 480});
  64   if (window.LoadFile(path.c_str()))
  65     window.RunEventLoop();
  66   else
  67     fprintf(stderr, "Failed to load file\n");
  68 }