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;
36 DrawingContext::~DrawingContext()
41 DrawingContext::draw_surface(const Surface* surface, const Vector& position,
42 int layer, Uint32 drawing_effect)
46 DrawingRequest request;
48 request.type = SURFACE;
49 request.layer = layer;
50 request.request_data = const_cast<Surface*> (surface);
51 request.pos = transform.apply(position);
52 request.drawing_effect = drawing_effect;
53 request.drawing_effect = transform.draw_effect | drawing_effect;
54 request.zoom = transform.zoom;
56 drawingrequests.push_back(request);
60 DrawingContext::draw_surface_part(const Surface* surface, const Vector& source,
61 const Vector& size, const Vector& dest, int layer, Uint32 drawing_effect)
65 DrawingRequest request;
67 request.type = SURFACE_PART;
68 request.layer = layer;
69 request.pos = transform.apply(dest);
70 request.drawing_effect = drawing_effect;
72 SurfacePartRequest* surfacepartrequest = new SurfacePartRequest();
73 surfacepartrequest->size = size;
74 surfacepartrequest->source = source;
75 surfacepartrequest->surface = surface;
76 request.request_data = surfacepartrequest;
78 drawingrequests.push_back(request);
82 DrawingContext::draw_text(Font* font, const std::string& text,
83 const Vector& position, int allignment, int layer,
84 Uint32 drawing_effect, int alpha)
86 DrawingRequest request;
89 request.layer = layer;
90 request.pos = transform.apply(position);
91 request.drawing_effect = drawing_effect;
93 TextRequest* textrequest = new TextRequest;
94 textrequest->font = font;
95 textrequest->text = text;
96 textrequest->allignment = allignment;
97 textrequest->alpha = alpha;
98 request.request_data = textrequest;
100 drawingrequests.push_back(request);
104 DrawingContext::draw_gradient(Color top, Color bottom, int layer)
106 DrawingRequest request;
108 request.type = GRADIENT;
109 request.layer = layer;
110 request.pos = Vector(0,0);
112 GradientRequest* gradientrequest = new GradientRequest;
113 gradientrequest->top = top;
114 gradientrequest->bottom = bottom;
115 request.request_data = gradientrequest;
117 drawingrequests.push_back(request);
121 DrawingContext::draw_filled_rect(const Vector& topleft, const Vector& size,
122 Color color, int layer)
124 DrawingRequest request;
126 request.type = FILLRECT;
127 request.layer = layer;
128 request.pos = transform.apply(topleft);
130 FillRectRequest* fillrectrequest = new FillRectRequest;
131 fillrectrequest->size = size;
132 fillrectrequest->color = color;
133 request.request_data = fillrectrequest;
135 drawingrequests.push_back(request);
139 DrawingContext::draw_surface_part(DrawingRequest& request)
141 SurfacePartRequest* surfacepartrequest
142 = (SurfacePartRequest*) request.request_data;
144 surfacepartrequest->surface->impl->draw_part(
145 surfacepartrequest->source.x, surfacepartrequest->source.y,
146 request.pos.x, request.pos.y,
147 surfacepartrequest->size.x, surfacepartrequest->size.y, 255,
148 request.drawing_effect);
150 delete surfacepartrequest;
154 DrawingContext::draw_gradient(DrawingRequest& request)
156 GradientRequest* gradientrequest = (GradientRequest*) request.request_data;
157 const Color& top = gradientrequest->top;
158 const Color& bottom = gradientrequest->bottom;
164 glColor3ub(top.red, top.green, top.blue);
166 glVertex2f(screen->w, 0);
167 glColor3ub(bottom.red, bottom.green, bottom.blue);
168 glVertex2f(screen->w, screen->h);
169 glVertex2f(0, screen->h);
177 fillrect(0, 0, screen->w, screen->h, top.red, top.green, top.blue);
181 float redstep = (float(bottom.red)-float(top.red)) / float(screen->h);
182 float greenstep = (float(bottom.green)-float(top.green)) / float(screen->h);
183 float bluestep = (float(bottom.blue) - float(top.blue)) / float(screen->h);
185 for(float y = 0; y < screen->h; y += 2)
186 fillrect(0, (int)y, screen->w, 2,
187 int(float(top.red) + redstep * y),
188 int(float(top.green) + greenstep * y),
189 int(float(top.blue) + bluestep * y), 255);
196 delete gradientrequest;
200 DrawingContext::draw_text(DrawingRequest& request)
202 TextRequest* textrequest = (TextRequest*) request.request_data;
204 textrequest->font->draw(textrequest->text, request.pos, textrequest->allignment, request.drawing_effect, textrequest->alpha);
210 DrawingContext::draw_filled_rect(DrawingRequest& request)
212 FillRectRequest* fillrectrequest = (FillRectRequest*) request.request_data;
214 float x = request.pos.x;
215 float y = request.pos.y;
216 float w = fillrectrequest->size.x;
217 float h = fillrectrequest->size.y;
223 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
224 glColor4ub(fillrectrequest->color.red, fillrectrequest->color.green,
225 fillrectrequest->color.blue, fillrectrequest->color.alpha);
230 glVertex2f(x+w, y+h);
239 SDL_Surface *temp = NULL;
246 if(fillrectrequest->color.alpha != 255)
248 temp = SDL_CreateRGBSurface(screen->flags, rect.w, rect.h, screen->format->BitsPerPixel,
249 screen->format->Rmask,
250 screen->format->Gmask,
251 screen->format->Bmask,
252 screen->format->Amask);
260 SDL_FillRect(temp, &src, SDL_MapRGB(screen->format,
261 fillrectrequest->color.red, fillrectrequest->color.green,
262 fillrectrequest->color.blue));
264 SDL_SetAlpha(temp, SDL_SRCALPHA, fillrectrequest->color.alpha);
266 SDL_BlitSurface(temp,0,screen,&rect);
268 SDL_FreeSurface(temp);
271 SDL_FillRect(screen, &rect, SDL_MapRGB(screen->format,
272 fillrectrequest->color.red, fillrectrequest->color.green,
273 fillrectrequest->color.blue));
280 delete fillrectrequest;
284 DrawingContext::do_drawing()
286 std::stable_sort(drawingrequests.begin(), drawingrequests.end());
288 for(DrawingRequests::iterator i = drawingrequests.begin();
289 i != drawingrequests.end(); ++i) {
293 const Surface* surface = (const Surface*) i->request_data;
296 surface->impl->draw_stretched(i->pos.x * i->zoom, i->pos.y * i->zoom,
297 (int)(surface->w * i->zoom), (int)(surface->h * i->zoom),
298 255, i->drawing_effect);
300 surface->impl->draw(i->pos.x, i->pos.y, 255, i->drawing_effect);
304 draw_surface_part(*i);
313 draw_filled_rect(*i);
320 SDL_GL_SwapBuffers();
324 drawingrequests.clear();
328 DrawingContext::push_transform()
330 transformstack.push_back(transform);
334 DrawingContext::pop_transform()
336 assert(!transformstack.empty());
338 transform = transformstack.back();
339 transformstack.pop_back();
343 DrawingContext::set_drawing_effect(int effect)
345 transform.draw_effect = effect;
349 DrawingContext::set_zooming(float zoom)
351 transform.zoom = zoom;