2 // Copyright (C) 2006 Matthias Braun <matze@braunis.de>
4 // This program is free software: you can redistribute it and/or modify
5 // it under the terms of the GNU General Public License as published by
6 // the Free Software Foundation, either version 3 of the License, or
7 // (at your option) any later version.
9 // This program is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License
15 // along with this program. If not, see <http://www.gnu.org/licenses/>.
17 #include "video/drawing_context.hpp"
22 #include "math/sizef.hpp"
23 #include "supertux/gameconfig.hpp"
24 #include "supertux/globals.hpp"
25 #include "util/obstackpp.hpp"
26 #include "video/drawing_request.hpp"
27 #include "video/lightmap.hpp"
28 #include "video/renderer.hpp"
29 #include "video/surface.hpp"
30 #include "video/texture.hpp"
31 #include "video/texture_manager.hpp"
32 #include "video/video_systems.hpp"
34 DrawingContext::DrawingContext(Renderer& renderer, Lightmap& lightmap) :
44 ambient_color(1.0f, 1.0f, 1.0f, 1.0f),
48 screenshot_requested(false)
50 requests = &drawing_requests;
54 DrawingContext::~DrawingContext()
56 clear_drawing_requests(lightmap_requests);
57 clear_drawing_requests(drawing_requests);
59 obstack_free(&obst, NULL);
63 DrawingContext::clear_drawing_requests(DrawingRequests& requests)
65 for(auto& request : requests)
67 if (request->request_data)
69 request->request_data->~DrawingRequestData();
71 request->~DrawingRequest();
77 DrawingContext::draw_surface(SurfacePtr surface, const Vector& position,
78 float angle, const Color& color, const Blend& blend,
83 DrawingRequest* request = new(obst) DrawingRequest();
85 request->target = target;
86 request->type = SURFACE;
87 request->pos = transform.apply(position);
89 if(request->pos.x >= SCREEN_WIDTH || request->pos.y >= SCREEN_HEIGHT
90 || request->pos.x + surface->get_width() < 0
91 || request->pos.y + surface->get_height() < 0)
94 request->layer = layer;
95 request->drawing_effect = transform.drawing_effect;
96 request->alpha = transform.alpha;
97 request->angle = angle;
98 request->color = color;
99 request->blend = blend;
101 SurfaceRequest* surfacerequest = new(obst) SurfaceRequest();
102 surfacerequest->surface = surface.get();
103 request->request_data = surfacerequest;
105 requests->push_back(request);
109 DrawingContext::draw_surface(SurfacePtr surface, const Vector& position,
112 draw_surface(surface, position, 0.0f, Color(1.0f, 1.0f, 1.0f), Blend(), layer);
116 DrawingContext::draw_surface_part(SurfacePtr surface,
117 const Rectf& srcrect, const Rectf& dstrect,
120 assert(surface != 0);
122 DrawingRequest* request = new(obst) DrawingRequest();
124 request->target = target;
125 request->type = SURFACE_PART;
126 request->pos = transform.apply(dstrect.p1);
127 request->layer = layer;
128 request->drawing_effect = transform.drawing_effect;
129 request->alpha = transform.alpha;
131 SurfacePartRequest* surfacepartrequest = new(obst) SurfacePartRequest();
132 surfacepartrequest->srcrect = srcrect;
133 surfacepartrequest->dstsize = dstrect.get_size();
134 surfacepartrequest->surface = surface.get();
136 request->request_data = surfacepartrequest;
138 requests->push_back(request);
142 DrawingContext::draw_text(FontPtr font, const std::string& text,
143 const Vector& position, FontAlignment alignment, int layer, Color color)
145 DrawingRequest* request = new(obst) DrawingRequest();
147 request->target = target;
148 request->type = TEXT;
149 request->pos = transform.apply(position);
150 request->layer = layer;
151 request->drawing_effect = transform.drawing_effect;
152 request->alpha = transform.alpha;
153 request->color = color;
155 TextRequest* textrequest = new(obst) TextRequest();
156 textrequest->font = font.get();
157 textrequest->text = text;
158 textrequest->alignment = alignment;
159 request->request_data = textrequest;
161 requests->push_back(request);
165 DrawingContext::draw_center_text(FontPtr font, const std::string& text,
166 const Vector& position, int layer, Color color)
168 draw_text(font, text, Vector(position.x + SCREEN_WIDTH/2, position.y),
169 ALIGN_CENTER, layer, color);
173 DrawingContext::draw_gradient(const Color& top, const Color& bottom, int layer)
175 DrawingRequest* request = new(obst) DrawingRequest();
177 request->target = target;
178 request->type = GRADIENT;
179 request->pos = Vector(0,0);
180 request->layer = layer;
182 request->drawing_effect = transform.drawing_effect;
183 request->alpha = transform.alpha;
185 GradientRequest* gradientrequest = new(obst) GradientRequest();
186 gradientrequest->top = top;
187 gradientrequest->bottom = bottom;
188 request->request_data = gradientrequest;
190 requests->push_back(request);
194 DrawingContext::draw_filled_rect(const Vector& topleft, const Vector& size,
195 const Color& color, int layer)
197 DrawingRequest* request = new(obst) DrawingRequest();
199 request->target = target;
200 request->type = FILLRECT;
201 request->pos = transform.apply(topleft);
202 request->layer = layer;
204 request->drawing_effect = transform.drawing_effect;
205 request->alpha = transform.alpha;
207 FillRectRequest* fillrectrequest = new(obst) FillRectRequest();
208 fillrectrequest->size = size;
209 fillrectrequest->color = color;
210 fillrectrequest->color.alpha = color.alpha * transform.alpha;
211 fillrectrequest->radius = 0.0f;
212 request->request_data = fillrectrequest;
214 requests->push_back(request);
218 DrawingContext::draw_filled_rect(const Rectf& rect, const Color& color,
221 draw_filled_rect(rect, color, 0.0f, layer);
225 DrawingContext::draw_filled_rect(const Rectf& rect, const Color& color, float radius, int layer)
227 DrawingRequest* request = new(obst) DrawingRequest();
229 request->target = target;
230 request->type = FILLRECT;
231 request->pos = transform.apply(rect.p1);
232 request->layer = layer;
234 request->drawing_effect = transform.drawing_effect;
235 request->alpha = transform.alpha;
237 FillRectRequest* fillrectrequest = new(obst) FillRectRequest;
238 fillrectrequest->size = Vector(rect.get_width(), rect.get_height());
239 fillrectrequest->color = color;
240 fillrectrequest->color.alpha = color.alpha * transform.alpha;
241 fillrectrequest->radius = radius;
242 request->request_data = fillrectrequest;
244 requests->push_back(request);
248 DrawingContext::draw_inverse_ellipse(const Vector& pos, const Vector& size, const Color& color, int layer)
250 DrawingRequest* request = new(obst) DrawingRequest();
252 request->target = target;
253 request->type = INVERSEELLIPSE;
254 request->pos = transform.apply(pos);
255 request->layer = layer;
257 request->drawing_effect = transform.drawing_effect;
258 request->alpha = transform.alpha;
260 InverseEllipseRequest* ellipse = new(obst)InverseEllipseRequest;
262 ellipse->color = color;
263 ellipse->color.alpha = color.alpha * transform.alpha;
264 ellipse->size = size;
265 request->request_data = ellipse;
267 requests->push_back(request);
271 DrawingContext::get_cliprect() const
273 return Rectf(get_translation().x, get_translation().y,
274 get_translation().x + SCREEN_WIDTH,
275 get_translation().y + SCREEN_HEIGHT);
279 DrawingContext::get_light(const Vector& position, Color* color)
281 if( ambient_color.red == 1.0f && ambient_color.green == 1.0f
282 && ambient_color.blue == 1.0f ) {
283 *color = Color( 1.0f, 1.0f, 1.0f);
287 DrawingRequest* request = new(obst) DrawingRequest();
288 request->target = target;
289 request->type = GETLIGHT;
290 request->pos = transform.apply(position);
292 //There is no light offscreen.
293 if(request->pos.x >= SCREEN_WIDTH || request->pos.y >= SCREEN_HEIGHT
294 || request->pos.x < 0 || request->pos.y < 0){
295 *color = Color( 0, 0, 0);
299 request->layer = LAYER_GUI; //make sure all get_light requests are handled last.
300 GetLightRequest* getlightrequest = new(obst) GetLightRequest();
301 getlightrequest->color_ptr = color;
302 request->request_data = getlightrequest;
303 lightmap_requests.push_back(request);
307 DrawingContext::do_drawing()
309 assert(transformstack.empty());
310 assert(target_stack.empty());
311 transformstack.clear();
312 target_stack.clear();
314 //Use Lightmap if ambient color is not white.
315 bool use_lightmap = ( ambient_color.red != 1.0f ||
316 ambient_color.green != 1.0f ||
317 ambient_color.blue != 1.0f );
319 // PART1: create lightmap
321 lightmap.start_draw(ambient_color);
322 handle_drawing_requests(lightmap_requests);
325 DrawingRequest* request = new(obst) DrawingRequest();
326 request->target = NORMAL;
327 request->type = DRAW_LIGHTMAP;
328 request->layer = LAYER_HUD - 1;
329 drawing_requests.push_back(request);
331 handle_drawing_requests(drawing_requests);
333 clear_drawing_requests(lightmap_requests);
334 clear_drawing_requests(drawing_requests);
336 obstack_free(&obst, NULL);
339 // if a screenshot was requested, take one
340 if (screenshot_requested) {
341 renderer.do_take_screenshot();
342 screenshot_requested = false;
348 class RequestPtrCompare
351 bool operator()(const DrawingRequest* r1, const DrawingRequest* r2) const
358 DrawingContext::handle_drawing_requests(DrawingRequests& requests)
360 std::stable_sort(requests.begin(), requests.end(), RequestPtrCompare());
362 DrawingRequests::const_iterator i;
363 for(i = requests.begin(); i != requests.end(); ++i) {
364 const DrawingRequest& request = **i;
366 switch(request.target) {
368 switch(request.type) {
370 renderer.draw_surface(request);
373 renderer.draw_surface_part(request);
376 renderer.draw_gradient(request);
380 const TextRequest* textrequest = (TextRequest*) request.request_data;
381 textrequest->font->draw(&renderer, textrequest->text, request.pos,
382 textrequest->alignment, request.drawing_effect, request.color, request.alpha);
386 renderer.draw_filled_rect(request);
389 renderer.draw_inverse_ellipse(request);
395 lightmap.get_light(request);
400 switch(request.type) {
402 lightmap.draw_surface(request);
405 lightmap.draw_surface_part(request);
408 lightmap.draw_gradient(request);
412 const TextRequest* textrequest = (TextRequest*) request.request_data;
413 textrequest->font->draw(&renderer, textrequest->text, request.pos,
414 textrequest->alignment, request.drawing_effect, request.color, request.alpha);
418 lightmap.draw_filled_rect(request);
421 assert(!"InverseEllipse doesn't make sense on the lightmap");
427 lightmap.get_light(request);
436 DrawingContext::push_transform()
438 transformstack.push_back(transform);
442 DrawingContext::pop_transform()
444 assert(!transformstack.empty());
446 transform = transformstack.back();
447 transformstack.pop_back();
451 DrawingContext::set_drawing_effect(DrawingEffect effect)
453 transform.drawing_effect = effect;
457 DrawingContext::get_drawing_effect() const
459 return transform.drawing_effect;
463 DrawingContext::set_alpha(float alpha)
465 transform.alpha = alpha;
469 DrawingContext::get_alpha() const
471 return transform.alpha;
475 DrawingContext::push_target()
477 target_stack.push_back(target);
481 DrawingContext::pop_target()
483 set_target(target_stack.back());
484 target_stack.pop_back();
488 DrawingContext::set_target(Target target)
490 this->target = target;
491 if(target == LIGHTMAP) {
492 requests = &lightmap_requests;
494 assert(target == NORMAL);
495 requests = &drawing_requests;
500 DrawingContext::set_ambient_color( Color new_color )
502 ambient_color = new_color;
506 DrawingContext::take_screenshot()
508 screenshot_requested = true;