3 // SuperTux - A Jump'n Run
4 // Copyright (C) 2004 Matthias Braun <matze@braunis.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 02111-1307, USA.
23 #include "../video/drawing_context.h"
24 #include "../video/surface.h"
25 #include "../app/globals.h"
26 #include "../video/font.h"
28 using namespace SuperTux;
30 DrawingContext::DrawingContext()
32 transform.draw_effect = NONE_EFFECT;
35 DrawingContext::~DrawingContext()
40 DrawingContext::draw_surface(const Surface* surface, const Vector& position,
41 int layer, Uint32 drawing_effect)
45 DrawingRequest request;
47 request.type = SURFACE;
48 request.layer = layer;
49 request.request_data = const_cast<Surface*> (surface);
50 request.pos = transform.apply(position);
51 request.drawing_effect = drawing_effect;
52 request.drawing_effect = transform.draw_effect | drawing_effect;
54 drawingrequests.push_back(request);
58 DrawingContext::draw_surface_part(const Surface* surface, const Vector& source,
59 const Vector& size, const Vector& dest, int layer, Uint32 drawing_effect)
63 DrawingRequest request;
65 request.type = SURFACE_PART;
66 request.layer = layer;
67 request.pos = transform.apply(dest);
68 request.drawing_effect = drawing_effect;
70 SurfacePartRequest* surfacepartrequest = new SurfacePartRequest();
71 surfacepartrequest->size = size;
72 surfacepartrequest->source = source;
73 surfacepartrequest->surface = surface;
74 request.request_data = surfacepartrequest;
76 drawingrequests.push_back(request);
80 DrawingContext::draw_text(Font* font, const std::string& text,
81 const Vector& position, int layer, Uint32 drawing_effect)
83 DrawingRequest request;
86 request.layer = layer;
87 request.pos = transform.apply(position);
88 request.drawing_effect = drawing_effect;
90 TextRequest* textrequest = new TextRequest;
91 textrequest->font = font;
92 textrequest->text = text;
93 textrequest->center = false;
94 request.request_data = textrequest;
96 drawingrequests.push_back(request);
100 DrawingContext::draw_text_center(Font* font, const std::string& text,
101 const Vector& position, int layer, Uint32 drawing_effect)
103 DrawingRequest request;
106 request.layer = layer;
107 request.pos = transform.apply(position);
108 request.drawing_effect = drawing_effect;
110 TextRequest* textrequest = new TextRequest;
111 textrequest->font = font;
112 textrequest->text = text;
113 textrequest->center = true;
114 request.request_data = textrequest;
116 drawingrequests.push_back(request);
120 DrawingContext::draw_gradient(Color top, Color bottom, int layer)
122 DrawingRequest request;
124 request.type = GRADIENT;
125 request.layer = layer;
126 request.pos = Vector(0,0);
128 GradientRequest* gradientrequest = new GradientRequest;
129 gradientrequest->top = top;
130 gradientrequest->bottom = bottom;
131 request.request_data = gradientrequest;
133 drawingrequests.push_back(request);
137 DrawingContext::draw_filled_rect(const Vector& topleft, const Vector& size,
138 Color color, int layer)
140 DrawingRequest request;
142 request.type = FILLRECT;
143 request.layer = layer;
144 request.pos = transform.apply(topleft);
146 FillRectRequest* fillrectrequest = new FillRectRequest;
147 fillrectrequest->size = size;
148 fillrectrequest->color = color;
149 request.request_data = fillrectrequest;
151 drawingrequests.push_back(request);
155 DrawingContext::draw_surface_part(DrawingRequest& request)
157 SurfacePartRequest* surfacepartrequest
158 = (SurfacePartRequest*) request.request_data;
160 surfacepartrequest->surface->impl->draw_part(
161 surfacepartrequest->source.x, surfacepartrequest->source.y,
162 request.pos.x, request.pos.y,
163 surfacepartrequest->size.x, surfacepartrequest->size.y, 255,
164 request.drawing_effect);
166 delete surfacepartrequest;
170 DrawingContext::draw_gradient(DrawingRequest& request)
172 GradientRequest* gradientrequest = (GradientRequest*) request.request_data;
173 const Color& top = gradientrequest->top;
174 const Color& bottom = gradientrequest->bottom;
180 glColor3ub(top.red, top.green, top.blue);
182 glVertex2f(screen->w, 0);
183 glColor3ub(bottom.red, bottom.green, bottom.blue);
184 glVertex2f(screen->w, screen->h);
185 glVertex2f(0, screen->h);
193 fillrect(0, 0, screen->w, screen->h, top.red, top.green, top.blue);
197 float redstep = (float(bottom.red)-float(top.red)) / float(screen->h);
198 float greenstep = (float(bottom.green)-float(top.green)) / float(screen->h);
199 float bluestep = (float(bottom.blue) - float(top.blue)) / float(screen->h);
201 for(float y = 0; y < screen->h; y += 2)
202 fillrect(0, (int)y, screen->w, 2,
203 int(float(top.red) + redstep * y),
204 int(float(top.green) + greenstep * y),
205 int(float(top.blue) + bluestep * y), 255);
212 delete gradientrequest;
216 DrawingContext::draw_text(DrawingRequest& request)
218 TextRequest* textrequest = (TextRequest*) request.request_data;
220 if(textrequest->center)
221 textrequest->font->draw_center(textrequest->text, request.pos, request.drawing_effect);
223 textrequest->font->draw(textrequest->text, request.pos, request.drawing_effect);
229 DrawingContext::draw_filled_rect(DrawingRequest& request)
231 FillRectRequest* fillrectrequest = (FillRectRequest*) request.request_data;
233 float x = request.pos.x;
234 float y = request.pos.y;
235 float w = fillrectrequest->size.x;
236 float h = fillrectrequest->size.y;
242 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
243 glColor4ub(fillrectrequest->color.red, fillrectrequest->color.green,
244 fillrectrequest->color.blue, fillrectrequest->color.alpha);
249 glVertex2f(x+w, y+h);
258 SDL_Surface *temp = NULL;
265 if(fillrectrequest->color.alpha != 255)
267 temp = SDL_CreateRGBSurface(screen->flags, rect.w, rect.h, screen->format->BitsPerPixel,
268 screen->format->Rmask,
269 screen->format->Gmask,
270 screen->format->Bmask,
271 screen->format->Amask);
279 SDL_FillRect(temp, &src, SDL_MapRGB(screen->format,
280 fillrectrequest->color.red, fillrectrequest->color.green,
281 fillrectrequest->color.blue));
283 SDL_SetAlpha(temp, SDL_SRCALPHA, fillrectrequest->color.alpha);
285 SDL_BlitSurface(temp,0,screen,&rect);
287 SDL_FreeSurface(temp);
290 SDL_FillRect(screen, &rect, SDL_MapRGB(screen->format,
291 fillrectrequest->color.red, fillrectrequest->color.green,
292 fillrectrequest->color.blue));
299 delete fillrectrequest;
303 DrawingContext::do_drawing()
305 std::stable_sort(drawingrequests.begin(), drawingrequests.end());
307 for(DrawingRequests::iterator i = drawingrequests.begin();
308 i != drawingrequests.end(); ++i) {
312 const Surface* surface = (const Surface*) i->request_data;
313 surface->impl->draw(i->pos.x, i->pos.y, 255, i->drawing_effect);
317 draw_surface_part(*i);
326 draw_filled_rect(*i);
333 SDL_GL_SwapBuffers();
337 drawingrequests.clear();
341 DrawingContext::push_transform()
343 transformstack.push_back(transform);
347 DrawingContext::pop_transform()
349 assert(!transformstack.empty());
351 transform = transformstack.back();
352 transformstack.pop_back();
356 DrawingContext::set_drawing_effect(int effect)
358 transform.draw_effect = effect;