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.
20 #include "drawing_context.h"
28 DrawingContext::DrawingContext()
32 DrawingContext::~DrawingContext()
37 DrawingContext::draw_surface(const Surface* surface, const Vector& position,
38 int layer, uint32_t drawing_effect)
42 DrawingRequest request;
44 request.type = SURFACE;
45 request.layer = layer;
46 request.request_data = const_cast<Surface*> (surface);
47 request.pos = transform.apply(position);
48 request.drawing_effect = drawing_effect;
50 drawingrequests.push_back(request);
54 DrawingContext::draw_surface_part(const Surface* surface, const Vector& source,
55 const Vector& size, const Vector& dest, int layer, uint32_t drawing_effect)
59 DrawingRequest request;
61 request.type = SURFACE_PART;
62 request.layer = layer;
63 request.pos = transform.apply(dest);
64 request.drawing_effect = drawing_effect;
66 SurfacePartRequest* surfacepartrequest = new SurfacePartRequest();
67 surfacepartrequest->size = size;
68 surfacepartrequest->source = source;
69 surfacepartrequest->surface = surface;
70 request.request_data = surfacepartrequest;
72 drawingrequests.push_back(request);
76 DrawingContext::draw_text(Font* font, const std::string& text,
77 const Vector& position, int layer)
79 DrawingRequest request;
82 request.layer = layer;
83 request.pos = transform.apply(position);
85 TextRequest* textrequest = new TextRequest;
86 textrequest->font = font;
87 textrequest->text = text;
88 request.request_data = textrequest;
90 drawingrequests.push_back(request);
94 DrawingContext::draw_text_center(Font* font, const std::string& text,
95 const Vector& position, int layer)
97 DrawingRequest request;
100 request.layer = layer;
101 request.pos = transform.apply(position) + Vector(screen->w/2 -
102 font->get_text_width(text)/2, 0);
104 TextRequest* textrequest = new TextRequest;
105 textrequest->font = font;
106 textrequest->text = text;
107 request.request_data = textrequest;
109 drawingrequests.push_back(request);
113 DrawingContext::draw_gradient(Color top, Color bottom, int layer)
115 DrawingRequest request;
117 request.type = GRADIENT;
118 request.layer = layer;
119 request.pos = Vector(0,0);
121 GradientRequest* gradientrequest = new GradientRequest;
122 gradientrequest->top = top;
123 gradientrequest->bottom = bottom;
124 request.request_data = gradientrequest;
126 drawingrequests.push_back(request);
130 DrawingContext::draw_filled_rect(const Vector& topleft, const Vector& size,
131 Color color, int layer)
133 DrawingRequest request;
135 request.type = FILLRECT;
136 request.layer = layer;
137 request.pos = transform.apply(topleft);
139 FillRectRequest* fillrectrequest = new FillRectRequest;
140 fillrectrequest->size = size;
141 fillrectrequest->color = color;
142 request.request_data = fillrectrequest;
144 drawingrequests.push_back(request);
148 DrawingContext::draw_surface_part(DrawingRequest& request)
150 SurfacePartRequest* surfacepartrequest
151 = (SurfacePartRequest*) request.request_data;
153 surfacepartrequest->surface->impl->draw_part(
154 surfacepartrequest->source.x, surfacepartrequest->source.y,
155 request.pos.x, request.pos.y,
156 surfacepartrequest->size.x, surfacepartrequest->size.y, 255,
157 request.drawing_effect);
159 delete surfacepartrequest;
163 DrawingContext::draw_gradient(DrawingRequest& request)
165 GradientRequest* gradientrequest = (GradientRequest*) request.request_data;
166 const Color& top = gradientrequest->top;
167 const Color& bottom = gradientrequest->bottom;
173 glColor3ub(top.red, top.green, top.blue);
175 glVertex2f(screen->w, 0);
176 glColor3ub(bottom.red, bottom.green, bottom.blue);
177 glVertex2f(screen->w, screen->h);
178 glVertex2f(0, screen->h);
184 float redstep = (float(bottom.red)-float(top.red)) / float(screen->h);
185 float greenstep = (float(bottom.green)-float(top.green)) / float(screen->h);
186 float bluestep = (float(bottom.blue) - float(top.blue)) / float(screen->h);
188 for(float y = 0; y < screen->h; y += 2)
189 fillrect(0, (int)y, screen->w, 2,
190 int(float(top.red) + redstep * y),
191 int(float(top.green) + greenstep * y),
192 int(float(top.blue) + bluestep * y), 255);
198 delete gradientrequest;
202 DrawingContext::draw_text(DrawingRequest& request)
204 TextRequest* textrequest = (TextRequest*) request.request_data;
206 textrequest->font->draw(textrequest->text, request.pos);
212 DrawingContext::draw_filled_rect(DrawingRequest& request)
214 FillRectRequest* fillrectrequest = (FillRectRequest*) request.request_data;
216 float x = request.pos.x;
217 float y = request.pos.y;
218 float w = fillrectrequest->size.x;
219 float h = fillrectrequest->size.y;
224 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
225 glColor4ub(fillrectrequest->color.red, fillrectrequest->color.green,
226 fillrectrequest->color.blue, fillrectrequest->color.alpha);
231 glVertex2f(x+w, y+h);
240 SDL_Surface *temp = NULL;
247 if(fillrectrequest->color.alpha != 255)
249 temp = SDL_CreateRGBSurface(screen->flags, rect.w, rect.h, screen->format->BitsPerPixel,
250 screen->format->Rmask,
251 screen->format->Gmask,
252 screen->format->Bmask,
253 screen->format->Amask);
261 SDL_FillRect(temp, &src, SDL_MapRGB(screen->format,
262 fillrectrequest->color.red, fillrectrequest->color.green,
263 fillrectrequest->color.blue));
265 SDL_SetAlpha(temp, SDL_SRCALPHA, fillrectrequest->color.alpha);
267 SDL_BlitSurface(temp,0,screen,&rect);
269 SDL_FreeSurface(temp);
272 SDL_FillRect(screen, &rect, SDL_MapRGB(screen->format,
273 fillrectrequest->color.red, fillrectrequest->color.green,
274 fillrectrequest->color.blue));
281 delete fillrectrequest;
285 DrawingContext::do_drawing()
287 std::stable_sort(drawingrequests.begin(), drawingrequests.end());
289 for(DrawingRequests::iterator i = drawingrequests.begin();
290 i != drawingrequests.end(); ++i) {
294 const Surface* surface = (const Surface*) i->request_data;
295 surface->impl->draw(i->pos.x, i->pos.y, 255, i->drawing_effect);
299 draw_surface_part(*i);
308 draw_filled_rect(*i);
315 SDL_GL_SwapBuffers();
319 drawingrequests.clear();
323 DrawingContext::push_transform()
325 transformstack.push_back(transform);
329 DrawingContext::pop_transform()
331 assert(!transformstack.empty());
333 transform = transformstack.back();
334 transformstack.pop_back();