4 // Copyright (C) 2004 Tobias Glaesser <tobi.web@gmx.de>
6 // This program is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU General Public License
8 // as published by the Free Software Foundation; either version 2
9 // of the License, or (at your option) any later version.
11 // This program is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License
17 // along with this program; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
24 #include "app/globals.h"
25 #include "video/screen.h"
26 #include "video/font.h"
27 #include "video/drawing_context.h"
28 #include "utils/lispreader.h"
30 using namespace SuperTux;
32 Font::Font(const std::string& file, FontType ntype, int nw, int nh,
34 : chars(0), shadow_chars(0), type(ntype), w(nw), h(nh),
35 shadowsize(nshadowsize)
37 chars = new Surface(file, true);
47 last_char = first_char + (chars->h / h) * 16;
48 if(last_char > 127) // we have left out some control chars at 128-159
53 SDL_Surface* conv = SDL_DisplayFormatAlpha(chars->impl->get_sdl_surface());
54 int pixels = conv->w * conv->h;
55 SDL_LockSurface(conv);
56 for(int i = 0; i < pixels; ++i) {
57 Uint32 *p = (Uint32 *)conv->pixels + i;
58 *p = *p & conv->format->Amask;
60 SDL_UnlockSurface(conv);
61 SDL_SetAlpha(conv, SDL_SRCALPHA, 128);
62 shadow_chars = new Surface(conv, true);
63 SDL_FreeSurface(conv);
74 Font::get_height() const
80 Font::get_text_width(const std::string& text) const
82 return text.size() * w;
86 Font::draw(const std::string& text, const Vector& pos, Uint32 drawing_effect)
89 draw_chars(shadow_chars, text, pos + Vector(shadowsize, shadowsize),
92 draw_chars(chars, text, pos, drawing_effect);
96 Font::draw_chars(Surface* pchars, const std::string& text, const Vector& pos,
97 Uint32 drawing_effect)
99 SurfaceImpl* impl = pchars->impl;
102 for(size_t i = 0; i < text.size(); ++i)
104 int c = (unsigned char) text[i];
105 if(c > 127) // correct for the 32 controlchars at 128-159
107 // a non-printable character?
113 if(c == ' ' || c < first_char || c > last_char) {
118 int index = c - first_char;
119 int source_x = (index % 16) * w;
120 int source_y = (index / 16) * h;
122 impl->draw_part(source_x, source_y, p.x, p.y, w, h, 255, drawing_effect);
127 /* --- SCROLL TEXT FUNCTION --- */
130 #define SPEED_INC 0.01
132 #define ITEMS_SPACE 4
134 void SuperTux::display_text_file(const std::string& file, float scroll_speed)
137 std::vector<std::string> names;
139 LispReader* reader = LispReader::load(datadir + "/" + file, "supertux-text");
143 std::cerr << "Error: Could not open text. Ignoring...\n";
147 reader->read_string("text", text, true);
148 std::string background_file;
149 reader->read_string("background", background_file, true);
152 // Split text string lines into a vector
158 l = text.find("\n", i);
160 if(l == std::string::npos)
163 temp[text.copy(temp, text.size() - i, i)] = '\0';
164 names.push_back(temp);
169 temp[text.copy(temp, l-i, i)] = '\0';
170 names.push_back(temp);
175 // load background image
176 Surface* background = new Surface(datadir + "/images/background/" + background_file, false);
180 float speed = scroll_speed / 50;
182 DrawingContext context;
183 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
185 Uint32 lastticks = SDL_GetTicks();
188 /* in case of input, exit */
190 while(SDL_PollEvent(&event))
194 switch(event.key.keysym.sym)
223 else if(speed < -MAX_VEL)
226 /* draw the credits */
227 context.draw_surface(background, Vector(0,0), 0);
230 for(size_t i = 0; i < names.size(); i++) {
231 if(names[i].size() == 0) {
232 y += white_text->get_height() + ITEMS_SPACE;
239 case ' ': font = white_small_text; break;
240 case '\t': font = white_text; break;
241 case '-': font = white_big_text; break;
242 case '*': font = blue_text; break;
243 default: font = blue_text; break;
246 context.draw_text_center(font,
247 names[i].substr(1, names[i].size()-1),
248 Vector(0, screen->h + y - scroll), LAYER_FOREGROUND1);
249 y += font->get_height() + ITEMS_SPACE;
252 context.do_drawing();
254 if(screen->h+y-scroll < 0 && 20+screen->h+y-scroll < 0)
257 Uint32 ticks = SDL_GetTicks();
258 scroll += speed * (ticks - lastticks);
266 SDL_EnableKeyRepeat(0, 0); // disables key repeating