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;
34 transform.alpha = 255;
37 DrawingContext::~DrawingContext()
42 DrawingContext::draw_surface(const Surface* surface, const Vector& position,
43 int layer, Uint32 drawing_effect)
47 DrawingRequest request;
49 request.type = SURFACE;
50 request.layer = layer;
51 request.request_data = const_cast<Surface*> (surface);
52 request.pos = transform.apply(position);
53 request.drawing_effect = drawing_effect;
54 request.drawing_effect = transform.draw_effect | drawing_effect;
55 request.zoom = transform.zoom;
56 request.alpha = transform.alpha;
58 drawingrequests.push_back(request);
62 DrawingContext::draw_surface_part(const Surface* surface, const Vector& source,
63 const Vector& size, const Vector& dest, int layer, Uint32 drawing_effect)
67 DrawingRequest request;
69 request.type = SURFACE_PART;
70 request.layer = layer;
71 request.pos = transform.apply(dest);
72 request.drawing_effect = drawing_effect;
73 request.alpha = transform.alpha;
75 SurfacePartRequest* surfacepartrequest = new SurfacePartRequest();
76 surfacepartrequest->size = size;
77 surfacepartrequest->source = source;
78 surfacepartrequest->surface = surface;
79 request.request_data = surfacepartrequest;
81 drawingrequests.push_back(request);
85 DrawingContext::draw_text(Font* font, const std::string& text,
86 const Vector& position, int allignment, int layer,
87 Uint32 drawing_effect)
89 DrawingRequest request;
92 request.layer = layer;
93 request.pos = transform.apply(position);
94 request.drawing_effect = drawing_effect;
95 request.alpha = transform.alpha;
97 TextRequest* textrequest = new TextRequest;
98 textrequest->font = font;
99 textrequest->text = text;
100 textrequest->allignment = allignment;
101 request.request_data = textrequest;
103 drawingrequests.push_back(request);
107 DrawingContext::draw_center_text(Font* font, const std::string& text,
108 const Vector& position, int layer, Uint32 drawing_effect)
110 draw_text(font, text, Vector(position.x + screen->w/2, position.y),
111 CENTER_ALLIGN, layer, drawing_effect);
115 DrawingContext::draw_gradient(Color top, Color bottom, int layer)
117 DrawingRequest request;
119 request.type = GRADIENT;
120 request.layer = layer;
121 request.pos = Vector(0,0);
123 GradientRequest* gradientrequest = new GradientRequest;
124 gradientrequest->top = top;
125 gradientrequest->bottom = bottom;
126 request.request_data = gradientrequest;
128 drawingrequests.push_back(request);
132 DrawingContext::draw_filled_rect(const Vector& topleft, const Vector& size,
133 Color color, int layer)
135 DrawingRequest request;
137 request.type = FILLRECT;
138 request.layer = layer;
139 request.pos = transform.apply(topleft);
141 FillRectRequest* fillrectrequest = new FillRectRequest;
142 fillrectrequest->size = size;
143 fillrectrequest->color = color;
144 request.request_data = fillrectrequest;
146 drawingrequests.push_back(request);
150 DrawingContext::draw_surface_part(DrawingRequest& request)
152 SurfacePartRequest* surfacepartrequest
153 = (SurfacePartRequest*) request.request_data;
155 surfacepartrequest->surface->impl->draw_part(
156 surfacepartrequest->source.x, surfacepartrequest->source.y,
157 request.pos.x, request.pos.y,
158 surfacepartrequest->size.x, surfacepartrequest->size.y, request.alpha,
159 request.drawing_effect);
161 delete surfacepartrequest;
165 DrawingContext::draw_gradient(DrawingRequest& request)
167 GradientRequest* gradientrequest = (GradientRequest*) request.request_data;
168 const Color& top = gradientrequest->top;
169 const Color& bottom = gradientrequest->bottom;
175 glColor3ub(top.red, top.green, top.blue);
177 glVertex2f(screen->w, 0);
178 glColor3ub(bottom.red, bottom.green, bottom.blue);
179 glVertex2f(screen->w, screen->h);
180 glVertex2f(0, screen->h);
188 fillrect(0, 0, screen->w, screen->h, top.red, top.green, top.blue);
192 float redstep = (float(bottom.red)-float(top.red)) / float(screen->h);
193 float greenstep = (float(bottom.green)-float(top.green)) / float(screen->h);
194 float bluestep = (float(bottom.blue) - float(top.blue)) / float(screen->h);
196 for(float y = 0; y < screen->h; y += 2)
197 fillrect(0, (int)y, screen->w, 2,
198 int(float(top.red) + redstep * y),
199 int(float(top.green) + greenstep * y),
200 int(float(top.blue) + bluestep * y), 255);
207 delete gradientrequest;
211 DrawingContext::draw_text(DrawingRequest& request)
213 TextRequest* textrequest = (TextRequest*) request.request_data;
215 textrequest->font->draw(textrequest->text, request.pos, textrequest->allignment, request.drawing_effect, request.alpha);
221 DrawingContext::draw_filled_rect(DrawingRequest& request)
223 FillRectRequest* fillrectrequest = (FillRectRequest*) request.request_data;
225 float x = request.pos.x;
226 float y = request.pos.y;
227 float w = fillrectrequest->size.x;
228 float h = fillrectrequest->size.y;
234 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
235 glColor4ub(fillrectrequest->color.red, fillrectrequest->color.green,
236 fillrectrequest->color.blue, fillrectrequest->color.alpha);
241 glVertex2f(x+w, y+h);
250 SDL_Surface *temp = NULL;
257 if(fillrectrequest->color.alpha != 255)
259 temp = SDL_CreateRGBSurface(screen->flags, rect.w, rect.h, screen->format->BitsPerPixel,
260 screen->format->Rmask,
261 screen->format->Gmask,
262 screen->format->Bmask,
263 screen->format->Amask);
271 SDL_FillRect(temp, &src, SDL_MapRGB(screen->format,
272 fillrectrequest->color.red, fillrectrequest->color.green,
273 fillrectrequest->color.blue));
275 SDL_SetAlpha(temp, SDL_SRCALPHA, fillrectrequest->color.alpha);
277 SDL_BlitSurface(temp,0,screen,&rect);
279 SDL_FreeSurface(temp);
282 SDL_FillRect(screen, &rect, SDL_MapRGB(screen->format,
283 fillrectrequest->color.red, fillrectrequest->color.green,
284 fillrectrequest->color.blue));
291 delete fillrectrequest;
295 DrawingContext::do_drawing()
297 std::stable_sort(drawingrequests.begin(), drawingrequests.end());
299 for(DrawingRequests::iterator i = drawingrequests.begin();
300 i != drawingrequests.end(); ++i) {
304 const Surface* surface = (const Surface*) i->request_data;
307 surface->impl->draw_stretched(i->pos.x * i->zoom, i->pos.y * i->zoom,
308 (int)(surface->w * i->zoom), (int)(surface->h * i->zoom),
309 i->alpha, i->drawing_effect);
311 surface->impl->draw(i->pos.x, i->pos.y, i->alpha, i->drawing_effect);
315 draw_surface_part(*i);
324 draw_filled_rect(*i);
331 SDL_GL_SwapBuffers();
335 drawingrequests.clear();
339 DrawingContext::push_transform()
341 transformstack.push_back(transform);
345 DrawingContext::pop_transform()
347 assert(!transformstack.empty());
349 transform = transformstack.back();
350 transformstack.pop_back();
354 DrawingContext::set_drawing_effect(int effect)
356 transform.draw_effect = effect;
360 DrawingContext::set_zooming(float zoom)
362 transform.zoom = zoom;
366 DrawingContext::set_alpha(int alpha)
368 transform.alpha = alpha;