1 #include "drawing_context.h"
9 DrawingContext::DrawingContext()
13 DrawingContext::~DrawingContext()
18 DrawingContext::draw_surface(const Surface* surface, const Vector& position,
23 DrawingRequest request;
25 request.type = SURFACE;
26 request.layer = layer;
27 request.request_data = const_cast<Surface*> (surface);
28 request.pos = transform.apply(position);
30 drawingrequests.push_back(request);
34 DrawingContext::draw_surface_part(const Surface* surface, const Vector& source,
35 const Vector& size, const Vector& dest, int layer)
39 DrawingRequest request;
41 request.type = SURFACE_PART;
42 request.layer = layer;
43 request.pos = transform.apply(dest);
45 SurfacePartRequest* surfacepartrequest = new SurfacePartRequest();
46 surfacepartrequest->size = size;
47 surfacepartrequest->source = source;
48 surfacepartrequest->surface = surface;
49 request.request_data = surfacepartrequest;
51 drawingrequests.push_back(request);
55 DrawingContext::draw_text(Font* font, const std::string& text,
56 const Vector& position, int layer)
58 DrawingRequest request;
61 request.layer = layer;
62 request.pos = transform.apply(position);
64 TextRequest* textrequest = new TextRequest;
65 textrequest->font = font;
66 textrequest->text = text;
67 request.request_data = textrequest;
69 drawingrequests.push_back(request);
73 DrawingContext::draw_text_center(Font* font, const std::string& text,
74 const Vector& position, int layer)
76 DrawingRequest request;
79 request.layer = layer;
80 request.pos = transform.apply(position) + Vector(screen->w/2 -
81 font->get_text_width(text)/2, 0);
83 TextRequest* textrequest = new TextRequest;
84 textrequest->font = font;
85 textrequest->text = text;
86 request.request_data = textrequest;
88 drawingrequests.push_back(request);
92 DrawingContext::draw_gradient(Color top, Color bottom, int layer)
94 DrawingRequest request;
96 request.type = GRADIENT;
97 request.layer = layer;
98 request.pos = Vector(0,0);
100 GradientRequest* gradientrequest = new GradientRequest;
101 gradientrequest->top = top;
102 gradientrequest->bottom = bottom;
103 request.request_data = gradientrequest;
105 drawingrequests.push_back(request);
109 DrawingContext::draw_filled_rect(const Vector& topleft, const Vector& size,
110 Color color, int layer)
112 DrawingRequest request;
114 request.type = FILLRECT;
115 request.layer = layer;
116 request.pos = topleft;
118 FillRectRequest* fillrectrequest = new FillRectRequest;
119 fillrectrequest->size = size;
120 fillrectrequest->color = color;
121 request.request_data = fillrectrequest;
123 drawingrequests.push_back(request);
127 DrawingContext::draw_surface_part(DrawingRequest& request)
129 SurfacePartRequest* surfacepartrequest
130 = (SurfacePartRequest*) request.request_data;
132 surfacepartrequest->surface->impl->draw_part(
133 surfacepartrequest->source.x, surfacepartrequest->source.y,
134 request.pos.x, request.pos.y,
135 surfacepartrequest->size.x, surfacepartrequest->size.y, 255);
137 delete surfacepartrequest;
141 DrawingContext::draw_gradient(DrawingRequest& request)
143 GradientRequest* gradientrequest = (GradientRequest*) request.request_data;
144 const Color& top = gradientrequest->top;
145 const Color& bottom = gradientrequest->bottom;
151 glColor3ub(top.red, top.green, top.blue);
153 glVertex2f(screen->w, 0);
154 glColor3ub(bottom.red, bottom.green, bottom.blue);
155 glVertex2f(screen->w, screen->h);
156 glVertex2f(0, screen->h);
162 float redstep = (float(bottom.red)-float(top.red)) / float(screen->h);
163 float greenstep = (float(bottom.green)-float(top.green)) / float(screen->h);
164 float bluestep = (float(bottom.blue) - float(top.blue)) / float(screen->h);
166 for(float y = 0; y < screen->h; y += 2)
167 fillrect(0, (int)y, screen->w, 2,
168 int(float(top.red) + redstep * y),
169 int(float(top.green) + greenstep * y),
170 int(float(top.blue) + bluestep * y), 255);
176 delete gradientrequest;
180 DrawingContext::draw_text(DrawingRequest& request)
182 TextRequest* textrequest = (TextRequest*) request.request_data;
184 textrequest->font->draw(textrequest->text, request.pos);
190 DrawingContext::draw_filled_rect(DrawingRequest& request)
192 FillRectRequest* fillrectrequest = (FillRectRequest*) request.request_data;
194 float x = request.pos.x;
195 float y = request.pos.y;
196 float w = fillrectrequest->size.x;
197 float h = fillrectrequest->size.y;
202 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
203 glColor4ub(fillrectrequest->color.red, fillrectrequest->color.green,
204 fillrectrequest->color.blue, fillrectrequest->color.alpha);
209 glVertex2f(x+w, y+h);
218 SDL_Surface *temp = NULL;
225 if(fillrectrequest->color.alpha != 255)
227 temp = SDL_CreateRGBSurface(screen->flags, rect.w, rect.h, screen->format->BitsPerPixel,
228 screen->format->Rmask,
229 screen->format->Gmask,
230 screen->format->Bmask,
231 screen->format->Amask);
239 SDL_FillRect(temp, &src, SDL_MapRGB(screen->format,
240 fillrectrequest->color.red, fillrectrequest->color.green,
241 fillrectrequest->color.blue));
243 SDL_SetAlpha(temp, SDL_SRCALPHA, fillrectrequest->color.alpha);
245 SDL_BlitSurface(temp,0,screen,&rect);
247 SDL_FreeSurface(temp);
250 SDL_FillRect(screen, &rect, SDL_MapRGB(screen->format,
251 fillrectrequest->color.red, fillrectrequest->color.green,
252 fillrectrequest->color.blue));
259 delete fillrectrequest;
263 DrawingContext::do_drawing()
265 std::sort(drawingrequests.begin(), drawingrequests.end());
267 for(DrawingRequests::iterator i = drawingrequests.begin();
268 i != drawingrequests.end(); ++i) {
272 const Surface* surface = (const Surface*) i->request_data;
273 surface->impl->draw(i->pos.x, i->pos.y, 255);
277 draw_surface_part(*i);
286 draw_filled_rect(*i);
293 SDL_GL_SwapBuffers();
297 drawingrequests.clear();
301 DrawingContext::push_transform()
303 transformstack.push_back(transform);
307 DrawingContext::pop_transform()
309 assert(!transformstack.empty());
311 transform = transformstack.back();
312 transformstack.pop_back();