src/Widget/OffsetButtonsWidget.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 #include "OffsetButtonsWidget.hpp"
  25 #include "Form/Button.hpp"
  26 #include "Util/Macros.hpp"
  27 #include "Screen/Layout.hpp"
  28
  29 PixelSize
  30 OffsetButtonsWidget::GetMinimumSize() const
  31 {
  32   return { 4u * Layout::GetMinimumControlHeight(),
  33       Layout::GetMinimumControlHeight() };
  34 }
  35
  36 PixelSize
  37 OffsetButtonsWidget::GetMaximumSize() const
  38 {
  39   return { 4u * Layout::GetMaximumControlHeight(),
  40       Layout::GetMaximumControlHeight() };
  41 }
  42
  43 static void
  44 LayoutOffsetButtons(const PixelRect &total_rc, PixelRect buttons[4])
  45 {
  46   const unsigned total_width = total_rc.right - total_rc.left;
  47   PixelRect rc = { 0, total_rc.top, total_rc.left, total_rc.bottom };
  48
  49   for (unsigned i = 0; i < 4; ++i) {
  50     rc.left = rc.right;
  51     rc.right = total_rc.left + (i + 1) * total_width / 4;
  52     buttons[i] = rc;
  53   }
  54 }
  55
  56 void
  57 OffsetButtonsWidget::Prepare(ContainerWindow &parent,
  58                              const PixelRect &total_rc)
  59 {
  60   PixelRect rc[ARRAY_SIZE(buttons)];
  61   LayoutOffsetButtons(total_rc, rc);
  62
  63   ButtonWindowStyle style;
  64   style.TabStop();
  65   style.Hide();
  66
  67   for (unsigned i = 0; i < ARRAY_SIZE(buttons); ++i) {
  68     TCHAR caption[16];
  69     _stprintf(caption, format, (double)offsets[i]);
  70     buttons[i] = new WndButton(parent, look, caption, rc[i], style,
  71                                *this, i);
  72   }
  73 }
  74
  75 void
  76 OffsetButtonsWidget::Unprepare()
  77 {
  78   for (unsigned i = 0; i < ARRAY_SIZE(offsets); ++i)
  79     delete buttons[i];
  80 }
  81
  82 void
  83 OffsetButtonsWidget::Show(const PixelRect &total_rc)
  84 {
  85   PixelRect rc[ARRAY_SIZE(buttons)];
  86   LayoutOffsetButtons(total_rc, rc);
  87
  88   for (unsigned i = 0; i < ARRAY_SIZE(buttons); ++i)
  89     buttons[i]->MoveAndShow(rc[i]);
  90 }
  91
  92 void
  93 OffsetButtonsWidget::Hide()
  94 {
  95   for (unsigned i = 0; i < ARRAY_SIZE(buttons); ++i)
  96     buttons[i]->Hide();
  97 }
  98
  99 void
 100 OffsetButtonsWidget::Move(const PixelRect &total_rc)
 101 {
 102   PixelRect rc[ARRAY_SIZE(buttons)];
 103   LayoutOffsetButtons(total_rc, rc);
 104
 105   for (unsigned i = 0; i < ARRAY_SIZE(buttons); ++i)
 106     buttons[i]->Move(rc[i]);
 107 }
 108
 109 bool
 110 OffsetButtonsWidget::SetFocus()
 111 {
 112   buttons[2]->SetFocus();
 113   return true;
 114 }
 115
 116 void
 117 OffsetButtonsWidget::OnAction(int id)
 118 {
 119   assert(unsigned(id) < ARRAY_SIZE(offsets));
 120
 121   OnOffset(offsets[id]);
 122 }