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
26 #include "app/globals.h"
29 #include "drawing_context.h"
30 #include "utils/lispreader.h"
32 using namespace SuperTux;
34 Font::Font(const std::string& file, FontType ntype, int nw, int nh,
36 : chars(0), shadow_chars(0), type(ntype), w(nw), h(nh),
37 shadowsize(nshadowsize)
39 chars = new Surface(file, true);
49 last_char = first_char + (chars->h / h) * 16;
50 if(last_char > 127) // we have left out some control chars at 128-159
55 SDL_Surface* conv = SDL_DisplayFormatAlpha(chars->impl->get_sdl_surface());
56 int pixels = conv->w * conv->h;
57 SDL_LockSurface(conv);
58 for(int i = 0; i < pixels; ++i) {
59 Uint32 *p = (Uint32 *)conv->pixels + i;
60 *p = *p & conv->format->Amask;
62 SDL_UnlockSurface(conv);
63 SDL_SetAlpha(conv, SDL_SRCALPHA, 128);
64 shadow_chars = new Surface(conv, true);
65 SDL_FreeSurface(conv);
76 Font::get_text_width(const std::string& text) const
78 /** Let's calculate the size of the biggest paragraph */
79 std::string::size_type l, hl, ol;
84 l = text.find("\n", l+1);
85 if(l == std::string::npos)
97 Font::get_text_height(const std::string& text) const
99 /** Let's calculate height of the text */
100 std::string::size_type l, hh;
104 l = text.find("\n", l+1);
105 if(l == std::string::npos)
114 Font::get_height() const
120 Font::draw(const std::string& text, const Vector& pos_, int allignment, Uint32 drawing_effect, int alpha)
122 /* Cut lines changes into seperate strings, needed to support center/right text
123 allignments with break lines.
124 Feel free to replace this hack with a more elegant solution
127 std::string::size_type l, i, y;
133 l = text.find("\n", i);
134 if(l == std::string::npos)
140 temp[text.copy(temp, l - i, i)] = '\0';
142 // calculate X positions based on the allignment type
143 Vector pos = Vector(pos_);
144 if(allignment == CENTER_ALLIGN)
145 pos.x -= get_text_width(temp) / 2;
146 else if(allignment == RIGHT_ALLIGN)
147 pos.x -= get_text_width(temp);
149 draw_text(temp, pos + Vector(0,y), drawing_effect, alpha);
157 Font::draw_text(const std::string& text, const Vector& pos, Uint32 drawing_effect, int alpha)
160 draw_chars(shadow_chars, text, pos + Vector(shadowsize, shadowsize),
161 drawing_effect, alpha);
163 draw_chars(chars, text, pos, drawing_effect, alpha);
167 Font::draw_chars(Surface* pchars, const std::string& text, const Vector& pos,
168 Uint32 drawing_effect, int alpha)
170 SurfaceImpl* impl = pchars->impl;
173 for(size_t i = 0; i < text.size(); ++i)
175 int c = (unsigned char) text[i];
176 if(c > 127) // correct for the 32 controlchars at 128-159
178 // a non-printable character?
184 if(c == ' ' || c < first_char || c > last_char) {
189 int index = c - first_char;
190 int source_x = (index % 16) * w;
191 int source_y = (index / 16) * h;
193 impl->draw_part(source_x, source_y, p.x, p.y, w, h, alpha, drawing_effect);
198 /* --- SCROLL TEXT FUNCTION --- */
201 #define SPEED_INC 0.01
203 #define ITEMS_SPACE 4
205 void SuperTux::display_text_file(const std::string& file, float scroll_speed, Font* heading_font, Font* normal_font, Font* small_font, Font* reference_font )
208 std::vector<std::string> names;
210 LispReader* reader = LispReader::load(datadir + "/" + file, "supertux-text");
214 std::cerr << "Error: Could not open text. Ignoring...\n";
218 reader->read_string("text", text, true);
219 std::string background_file;
220 reader->read_string("background", background_file, true);
223 // Split text string lines into a vector
225 std::string::size_type i, l;
229 l = text.find("\n", i);
231 if(l == std::string::npos)
234 temp[text.copy(temp, text.size() - i, i)] = '\0';
235 names.push_back(temp);
240 temp[text.copy(temp, l-i, i)] = '\0';
241 names.push_back(temp);
246 // load background image
247 Surface* background = new Surface(datadir + "/images/background/" + background_file, false);
251 float speed = scroll_speed / 50;
253 DrawingContext context;
254 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
256 Uint32 lastticks = SDL_GetTicks();
259 /* in case of input, exit */
261 while(SDL_PollEvent(&event))
265 switch(event.key.keysym.sym)
294 else if(speed < -MAX_VEL)
297 /* draw the credits */
298 context.draw_surface(background, Vector(0,0), 0);
301 for(size_t i = 0; i < names.size(); i++) {
302 if(names[i].size() == 0) {
303 y += normal_font->get_height() + ITEMS_SPACE;
310 case ' ': font = small_font; break;
311 case '\t': font = normal_font; break;
312 case '-': font = heading_font; break;
313 case '*': font = reference_font; break;
314 default: font = reference_font; break;
317 context.draw_text(font,
318 names[i].substr(1, names[i].size()-1),
319 Vector(screen->w/2, screen->h + y - scroll), CENTER_ALLIGN, LAYER_FOREGROUND1);
320 y += font->get_height() + ITEMS_SPACE;
323 context.do_drawing();
325 if(screen->h+y-scroll < 0 && 20+screen->h+y-scroll < 0)
328 Uint32 ticks = SDL_GetTicks();
329 scroll += speed * (ticks - lastticks);
337 SDL_EnableKeyRepeat(0, 0); // disables key repeating