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 request.request_data = textrequest;
95 drawingrequests.push_back(request);
99 DrawingContext::draw_text_center(Font* font, const std::string& text,
100 const Vector& position, int layer, Uint32 drawing_effect)
102 DrawingRequest request;
105 request.layer = layer;
106 request.pos = transform.apply(position) + Vector(screen->w/2 -
107 font->get_text_width(text)/2, 0);
108 request.drawing_effect = drawing_effect;
110 TextRequest* textrequest = new TextRequest;
111 textrequest->font = font;
112 textrequest->text = text;
113 request.request_data = textrequest;
115 drawingrequests.push_back(request);
119 DrawingContext::draw_gradient(Color top, Color bottom, int layer)
121 DrawingRequest request;
123 request.type = GRADIENT;
124 request.layer = layer;
125 request.pos = Vector(0,0);
127 GradientRequest* gradientrequest = new GradientRequest;
128 gradientrequest->top = top;
129 gradientrequest->bottom = bottom;
130 request.request_data = gradientrequest;
132 drawingrequests.push_back(request);
136 DrawingContext::draw_filled_rect(const Vector& topleft, const Vector& size,
137 Color color, int layer)
139 DrawingRequest request;
141 request.type = FILLRECT;
142 request.layer = layer;
143 request.pos = transform.apply(topleft);
145 FillRectRequest* fillrectrequest = new FillRectRequest;
146 fillrectrequest->size = size;
147 fillrectrequest->color = color;
148 request.request_data = fillrectrequest;
150 drawingrequests.push_back(request);
154 DrawingContext::draw_surface_part(DrawingRequest& request)
156 SurfacePartRequest* surfacepartrequest
157 = (SurfacePartRequest*) request.request_data;
159 surfacepartrequest->surface->impl->draw_part(
160 surfacepartrequest->source.x, surfacepartrequest->source.y,
161 request.pos.x, request.pos.y,
162 surfacepartrequest->size.x, surfacepartrequest->size.y, 255,
163 request.drawing_effect);
165 delete surfacepartrequest;
169 DrawingContext::draw_gradient(DrawingRequest& request)
171 GradientRequest* gradientrequest = (GradientRequest*) request.request_data;
172 const Color& top = gradientrequest->top;
173 const Color& bottom = gradientrequest->bottom;
179 glColor3ub(top.red, top.green, top.blue);
181 glVertex2f(screen->w, 0);
182 glColor3ub(bottom.red, bottom.green, bottom.blue);
183 glVertex2f(screen->w, screen->h);
184 glVertex2f(0, screen->h);
192 fillrect(0, 0, screen->w, screen->h, top.red, top.green, top.blue);
196 float redstep = (float(bottom.red)-float(top.red)) / float(screen->h);
197 float greenstep = (float(bottom.green)-float(top.green)) / float(screen->h);
198 float bluestep = (float(bottom.blue) - float(top.blue)) / float(screen->h);
200 for(float y = 0; y < screen->h; y += 2)
201 fillrect(0, (int)y, screen->w, 2,
202 int(float(top.red) + redstep * y),
203 int(float(top.green) + greenstep * y),
204 int(float(top.blue) + bluestep * y), 255);
211 delete gradientrequest;
215 DrawingContext::draw_text(DrawingRequest& request)
217 TextRequest* textrequest = (TextRequest*) request.request_data;
219 textrequest->font->draw(textrequest->text, request.pos, request.drawing_effect);
225 DrawingContext::draw_filled_rect(DrawingRequest& request)
227 FillRectRequest* fillrectrequest = (FillRectRequest*) request.request_data;
229 float x = request.pos.x;
230 float y = request.pos.y;
231 float w = fillrectrequest->size.x;
232 float h = fillrectrequest->size.y;
238 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
239 glColor4ub(fillrectrequest->color.red, fillrectrequest->color.green,
240 fillrectrequest->color.blue, fillrectrequest->color.alpha);
245 glVertex2f(x+w, y+h);
254 SDL_Surface *temp = NULL;
261 if(fillrectrequest->color.alpha != 255)
263 temp = SDL_CreateRGBSurface(screen->flags, rect.w, rect.h, screen->format->BitsPerPixel,
264 screen->format->Rmask,
265 screen->format->Gmask,
266 screen->format->Bmask,
267 screen->format->Amask);
275 SDL_FillRect(temp, &src, SDL_MapRGB(screen->format,
276 fillrectrequest->color.red, fillrectrequest->color.green,
277 fillrectrequest->color.blue));
279 SDL_SetAlpha(temp, SDL_SRCALPHA, fillrectrequest->color.alpha);
281 SDL_BlitSurface(temp,0,screen,&rect);
283 SDL_FreeSurface(temp);
286 SDL_FillRect(screen, &rect, SDL_MapRGB(screen->format,
287 fillrectrequest->color.red, fillrectrequest->color.green,
288 fillrectrequest->color.blue));
295 delete fillrectrequest;
299 DrawingContext::do_drawing()
301 std::stable_sort(drawingrequests.begin(), drawingrequests.end());
303 for(DrawingRequests::iterator i = drawingrequests.begin();
304 i != drawingrequests.end(); ++i) {
308 const Surface* surface = (const Surface*) i->request_data;
309 surface->impl->draw(i->pos.x, i->pos.y, 255, i->drawing_effect);
313 draw_surface_part(*i);
322 draw_filled_rect(*i);
329 SDL_GL_SwapBuffers();
333 drawingrequests.clear();
337 DrawingContext::push_transform()
339 transformstack.push_back(transform);
343 DrawingContext::pop_transform()
345 assert(!transformstack.empty());
347 transform = transformstack.back();
348 transformstack.pop_back();
352 DrawingContext::set_drawing_effect(int effect)
354 transform.draw_effect = effect;