src/gui/dialog.cpp

   1 //  SuperTux
   2 //  Copyright (C) 2014 Ingo Ruhnke <grumbel@gmail.com>
   3 //
   4 //  This program is free software: you can redistribute it and/or modify
   5 //  it under the terms of the GNU General Public License as published by
   6 //  the Free Software Foundation, either version 3 of the License, or
   7 //  (at your option) any later version.
   8 //
   9 //  This program is distributed in the hope that it will be useful,
  10 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 //  GNU General Public License for more details.
  13 //
  14 //  You should have received a copy of the GNU General Public License
  15 //  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 #include "gui/dialog.hpp"
  18
  19 #include "control/controller.hpp"
  20 #include "gui/menu_manager.hpp"
  21 #include "supertux/resources.hpp"
  22 #include "video/drawing_context.hpp"
  23
  24 Dialog::Dialog() :
  25   m_text(),
  26   m_buttons(),
  27   m_selected_button()
  28 {
  29 }
  30
  31 Dialog::~Dialog()
  32 {
  33 }
  34
  35 void
  36 Dialog::set_text(const std::string& text)
  37 {
  38   m_text = text;
  39 }
  40
  41 void
  42 Dialog::add_button(const std::string& text)
  43 {
  44   m_buttons.push_back(text);
  45 }
  46
  47 void
  48 Dialog::process_input(const Controller& controller)
  49 {
  50   if (controller.pressed(Controller::LEFT))
  51   {
  52     m_selected_button -= 1;
  53     m_selected_button = std::max(m_selected_button, 0);
  54   }
  55
  56   if (controller.pressed(Controller::RIGHT))
  57   {
  58     m_selected_button += 1;
  59     m_selected_button = std::min(m_selected_button, static_cast<int>(m_buttons.size()) - 1);
  60   }
  61
  62   if (controller.pressed(Controller::ACTION) ||
  63       controller.pressed(Controller::MENU_SELECT))
  64   {
  65     on_select(m_selected_button);
  66
  67     // warning: this will "delete this"
  68     MenuManager::instance().set_dialog({});
  69   }
  70 }
  71
  72 void
  73 Dialog::draw(DrawingContext& ctx)
  74 {
  75   Vector center(SCREEN_WIDTH/2, SCREEN_HEIGHT/2);
  76
  77   Sizef text_size(Resources::normal_font->get_text_width(m_text),
  78                   Resources::normal_font->get_text_height(m_text));
  79
  80   Rectf text_rect(Vector(center.x - text_size.width/2,
  81                          center.y - text_size.height/2),
  82                   text_size);
  83
  84   Rectf bg_rect = text_rect;
  85   bg_rect.p2.y += 44;
  86
  87   // draw background rect
  88   ctx.draw_filled_rect(bg_rect.grown(12.0f),
  89                        Color(0.2f, 0.3f, 0.4f, 0.8f),
  90                        16.0f,
  91                        LAYER_GUI-10);
  92
  93   ctx.draw_filled_rect(bg_rect.grown(8.0f),
  94                        Color(0.6f, 0.7f, 0.8f, 0.5f),
  95                        16.0f,
  96                        LAYER_GUI-10);
  97
  98   // draw text
  99   ctx.draw_text(Resources::normal_font, m_text,
 100                 Vector(bg_rect.p1.x + bg_rect.get_width()/2.0f,
 101                        bg_rect.p1.y),
 102                 ALIGN_CENTER, LAYER_GUI);
 103
 104   // draw HL line
 105   ctx.draw_filled_rect(Vector(bg_rect.p1.x, bg_rect.p2.y - 35),
 106                            Vector(bg_rect.get_width(), 4),
 107                            Color(0.6f, 0.7f, 1.0f, 1.0f), LAYER_GUI);
 108   ctx.draw_filled_rect(Vector(bg_rect.p1.x, bg_rect.p2.y - 35),
 109                            Vector(bg_rect.get_width(), 2),
 110                            Color(1.0f, 1.0f, 1.0f, 1.0f), LAYER_GUI);
 111
 112   // draw buttons
 113   for(int i = 0; i < static_cast<int>(m_buttons.size()); ++i)
 114   {
 115     float segment_width = bg_rect.get_width() / m_buttons.size();
 116     float button_width = segment_width * 0.95;
 117     float button_height = 24.0f;
 118     Vector pos(bg_rect.p1.x + segment_width/2.0f + i * segment_width,
 119                bg_rect.p2.y - 12);
 120
 121     if (i == m_selected_button)
 122     {
 123       float blink = (sinf(real_time * M_PI * 1.0f)/2.0f + 0.5f) * 0.5f + 0.25f;
 124       ctx.draw_filled_rect(Rectf(Vector(pos.x - button_width/2, pos.y - button_height/2),
 125                                  Vector(pos.x + button_width/2, pos.y + button_height/2)).grown(2.0f),
 126                            Color(1.0f, 1.0f, 1.0f, blink),
 127                            14.0f,
 128                            LAYER_GUI-10);
 129       ctx.draw_filled_rect(Rectf(Vector(pos.x - button_width/2, pos.y - button_height/2),
 130                                  Vector(pos.x + button_width/2, pos.y + button_height/2)),
 131                            Color(1.0f, 1.0f, 1.0f, 0.5f),
 132                            12.0f,
 133                            LAYER_GUI-10);
 134     }
 135
 136     ctx.draw_text(Resources::normal_font, m_buttons[i],
 137                   Vector(pos.x, pos.y - int(Resources::normal_font->get_height()/2)),
 138                   ALIGN_CENTER, LAYER_GUI);
 139   }
 140 }
 141
 142 void
 143 Dialog::on_select(int id)
 144 {
 145 }
 146
 147 /* EOF */