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 DrawingContext::DrawingContext()
30 transform.draw_effect = NONE_EFFECT;
33 DrawingContext::~DrawingContext()
38 DrawingContext::draw_surface(const Surface* surface, const Vector& position,
39 int layer, Uint32 drawing_effect)
43 DrawingRequest request;
45 request.type = SURFACE;
46 request.layer = layer;
47 request.request_data = const_cast<Surface*> (surface);
48 request.pos = transform.apply(position);
49 request.drawing_effect = drawing_effect;
50 request.drawing_effect = transform.draw_effect | drawing_effect;
52 drawingrequests.push_back(request);
56 DrawingContext::draw_surface_part(const Surface* surface, const Vector& source,
57 const Vector& size, const Vector& dest, int layer, Uint32 drawing_effect)
61 DrawingRequest request;
63 request.type = SURFACE_PART;
64 request.layer = layer;
65 request.pos = transform.apply(dest);
66 request.drawing_effect = drawing_effect;
68 SurfacePartRequest* surfacepartrequest = new SurfacePartRequest();
69 surfacepartrequest->size = size;
70 surfacepartrequest->source = source;
71 surfacepartrequest->surface = surface;
72 request.request_data = surfacepartrequest;
74 drawingrequests.push_back(request);
78 DrawingContext::draw_text(Font* font, const std::string& text,
79 const Vector& position, int layer, Uint32 drawing_effect)
81 DrawingRequest request;
84 request.layer = layer;
85 request.pos = transform.apply(position);
86 request.drawing_effect = drawing_effect;
88 TextRequest* textrequest = new TextRequest;
89 textrequest->font = font;
90 textrequest->text = text;
91 request.request_data = textrequest;
93 drawingrequests.push_back(request);
97 DrawingContext::draw_text_center(Font* font, const std::string& text,
98 const Vector& position, int layer, Uint32 drawing_effect)
100 DrawingRequest request;
103 request.layer = layer;
104 request.pos = transform.apply(position) + Vector(screen->w/2 -
105 font->get_text_width(text)/2, 0);
106 request.drawing_effect = drawing_effect;
108 TextRequest* textrequest = new TextRequest;
109 textrequest->font = font;
110 textrequest->text = text;
111 request.request_data = textrequest;
113 drawingrequests.push_back(request);
117 DrawingContext::draw_gradient(Color top, Color bottom, int layer)
119 DrawingRequest request;
121 request.type = GRADIENT;
122 request.layer = layer;
123 request.pos = Vector(0,0);
125 GradientRequest* gradientrequest = new GradientRequest;
126 gradientrequest->top = top;
127 gradientrequest->bottom = bottom;
128 request.request_data = gradientrequest;
130 drawingrequests.push_back(request);
134 DrawingContext::draw_filled_rect(const Vector& topleft, const Vector& size,
135 Color color, int layer)
137 DrawingRequest request;
139 request.type = FILLRECT;
140 request.layer = layer;
141 request.pos = transform.apply(topleft);
143 FillRectRequest* fillrectrequest = new FillRectRequest;
144 fillrectrequest->size = size;
145 fillrectrequest->color = color;
146 request.request_data = fillrectrequest;
148 drawingrequests.push_back(request);
152 DrawingContext::draw_surface_part(DrawingRequest& request)
154 SurfacePartRequest* surfacepartrequest
155 = (SurfacePartRequest*) request.request_data;
157 surfacepartrequest->surface->impl->draw_part(
158 surfacepartrequest->source.x, surfacepartrequest->source.y,
159 request.pos.x, request.pos.y,
160 surfacepartrequest->size.x, surfacepartrequest->size.y, 255,
161 request.drawing_effect);
163 delete surfacepartrequest;
167 DrawingContext::draw_gradient(DrawingRequest& request)
169 GradientRequest* gradientrequest = (GradientRequest*) request.request_data;
170 const Color& top = gradientrequest->top;
171 const Color& bottom = gradientrequest->bottom;
177 glColor3ub(top.red, top.green, top.blue);
179 glVertex2f(screen->w, 0);
180 glColor3ub(bottom.red, bottom.green, bottom.blue);
181 glVertex2f(screen->w, screen->h);
182 glVertex2f(0, screen->h);
190 fillrect(0, 0, screen->w, screen->h, top.red, top.green, top.blue);
194 float redstep = (float(bottom.red)-float(top.red)) / float(screen->h);
195 float greenstep = (float(bottom.green)-float(top.green)) / float(screen->h);
196 float bluestep = (float(bottom.blue) - float(top.blue)) / float(screen->h);
198 for(float y = 0; y < screen->h; y += 2)
199 fillrect(0, (int)y, screen->w, 2,
200 int(float(top.red) + redstep * y),
201 int(float(top.green) + greenstep * y),
202 int(float(top.blue) + bluestep * y), 255);
209 delete gradientrequest;
213 DrawingContext::draw_text(DrawingRequest& request)
215 TextRequest* textrequest = (TextRequest*) request.request_data;
217 textrequest->font->draw(textrequest->text, request.pos, request.drawing_effect);
223 DrawingContext::draw_filled_rect(DrawingRequest& request)
225 FillRectRequest* fillrectrequest = (FillRectRequest*) request.request_data;
227 float x = request.pos.x;
228 float y = request.pos.y;
229 float w = fillrectrequest->size.x;
230 float h = fillrectrequest->size.y;
236 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
237 glColor4ub(fillrectrequest->color.red, fillrectrequest->color.green,
238 fillrectrequest->color.blue, fillrectrequest->color.alpha);
243 glVertex2f(x+w, y+h);
252 SDL_Surface *temp = NULL;
259 if(fillrectrequest->color.alpha != 255)
261 temp = SDL_CreateRGBSurface(screen->flags, rect.w, rect.h, screen->format->BitsPerPixel,
262 screen->format->Rmask,
263 screen->format->Gmask,
264 screen->format->Bmask,
265 screen->format->Amask);
273 SDL_FillRect(temp, &src, SDL_MapRGB(screen->format,
274 fillrectrequest->color.red, fillrectrequest->color.green,
275 fillrectrequest->color.blue));
277 SDL_SetAlpha(temp, SDL_SRCALPHA, fillrectrequest->color.alpha);
279 SDL_BlitSurface(temp,0,screen,&rect);
281 SDL_FreeSurface(temp);
284 SDL_FillRect(screen, &rect, SDL_MapRGB(screen->format,
285 fillrectrequest->color.red, fillrectrequest->color.green,
286 fillrectrequest->color.blue));
293 delete fillrectrequest;
297 DrawingContext::do_drawing()
299 std::stable_sort(drawingrequests.begin(), drawingrequests.end());
301 for(DrawingRequests::iterator i = drawingrequests.begin();
302 i != drawingrequests.end(); ++i) {
306 const Surface* surface = (const Surface*) i->request_data;
307 surface->impl->draw(i->pos.x, i->pos.y, 255, i->drawing_effect);
311 draw_surface_part(*i);
320 draw_filled_rect(*i);
327 SDL_GL_SwapBuffers();
331 drawingrequests.clear();
335 DrawingContext::push_transform()
337 transformstack.push_back(transform);
341 DrawingContext::pop_transform()
343 assert(!transformstack.empty());
345 transform = transformstack.back();
346 transformstack.pop_back();
350 DrawingContext::set_drawing_effect(int effect)
352 transform.draw_effect = effect;