src/framework/showtextactivity.cpp

   1 /*
   2  * Copyright (c) 2007-2013, Czirkos Zoltan http://code.google.com/p/gdash/
   3  *
   4  * Permission to use, copy, modify, and distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include <glib.h>
  18 #include <glib/gi18n.h>
  19 #include <cstring>
  20
  21 #include "framework/showtextactivity.hpp"
  22 #include "framework/commands.hpp"
  23 #include "cave/helper/colors.hpp"
  24 #include "gfx/screen.hpp"
  25 #include "gfx/fontmanager.hpp"
  26 #include "misc/util.hpp"
  27 #include "misc/printf.hpp"
  28
  29
  30 ShowTextActivity::ShowTextActivity(App *app, char const *title_line, std::string const &text, SmartPtr<Command> command_after_exit)
  31 :
  32     Activity(app),
  33     command_after_exit(command_after_exit),
  34     title_line(title_line)
  35 {
  36     wrapped_text = gd_wrap_text(text.c_str(), app->screen->get_width() / app->font_manager->get_font_width_narrow()-4);
  37     linesavailable = app->screen->get_height() / app->font_manager->get_line_height()-4;
  38     if ((int)wrapped_text.size() < linesavailable)
  39         scroll_max_y = 0;
  40     else
  41         scroll_max_y = wrapped_text.size()-linesavailable;
  42     scroll_y = 0;
  43 }
  44
  45
  46 void ShowTextActivity::redraw_event() {
  47     app->clear_screen();
  48
  49     app->title_line(title_line.c_str());
  50     // TRANSLATORS: 40 chars max
  51     app->status_line(_("Crsr: move     Esc: exit"));
  52
  53     // up & down arrow
  54     app->set_color(GD_GDASH_GRAY2);
  55     if (scroll_y<scroll_max_y)
  56         app->blittext_n(app->screen->get_width() - app->font_manager->get_font_width_narrow(),
  57             app->screen->get_height()-3*app->font_manager->get_line_height(), CPrintf("%c") % GD_DOWN_CHAR);
  58     if (scroll_y>0)
  59         app->blittext_n(app->screen->get_width() - app->font_manager->get_font_width_narrow(),
  60             app->font_manager->get_line_height()*2, CPrintf("%c") % GD_UP_CHAR);
  61     // text
  62     app->set_color(GD_GDASH_LIGHTBLUE);
  63     for (int l=0; l<linesavailable && scroll_y + l<(int)wrapped_text.size(); ++l)
  64         app->blittext_n(app->font_manager->get_font_width_narrow()*2,
  65             l*app->font_manager->get_line_height()+app->font_manager->get_line_height()*2, wrapped_text[scroll_y+l].c_str());
  66
  67     app->screen->flip();
  68 }
  69
  70
  71 ShowTextActivity::~ShowTextActivity() {
  72     app->enqueue_command(command_after_exit);
  73 }
  74
  75
  76 void ShowTextActivity::keypress_event(KeyCode keycode, int gfxlib_keycode) {
  77     switch (keycode) {
  78         case App::PageUp:
  79             scroll_y -= linesavailable-1;
  80             if (scroll_y < 0)
  81                 scroll_y = 0;
  82             redraw_event();
  83             break;
  84         case App::Up:
  85             if (scroll_y > 0) {
  86                 scroll_y--;
  87                 redraw_event();
  88             }
  89             break;
  90         case App::PageDown:
  91             scroll_y += linesavailable-1;
  92             if (scroll_y > scroll_max_y)
  93                 scroll_y = scroll_max_y;
  94             redraw_event();
  95             break;
  96         case App::Down:
  97             if (scroll_y < scroll_max_y) {
  98                 scroll_y++;
  99                 redraw_event();
 100             }
 101             break;
 102         default:
 103             app->enqueue_command(new PopActivityCommand(app));
 104             break;
 105         case 0:
 106             /* unknown key or modifier - do nothing */
 107             break;
 108     }
 109 }