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.
19 #ifndef SUPERTUX_DRAWINGCONTEXT_H
20 #define SUPERTUX_DRAWINGCONTEXT_H
27 #include "math/vector.h"
28 #include "video/screen.h"
29 #include "video/surface.h"
37 // some constants for predefined layer values
39 LAYER_BACKGROUND0 = -300,
40 LAYER_BACKGROUND1 = -200,
41 LAYER_BACKGROUNDTILES = -100,
44 LAYER_FOREGROUNDTILES = 200,
45 LAYER_FOREGROUND0 = 300,
46 LAYER_FOREGROUND1 = 400,
51 * This class provides functions for drawing things on screen. It also
52 * maintains a stack of transforms that are applied to graphics.
60 /** Adds a drawing request for a surface into the request list */
61 void draw_surface(const Surface* surface, const Vector& position, int layer,
62 Uint32 drawing_effect = NONE_EFFECT);
63 /** Adds a drawing request for part of a surface */
64 void draw_surface_part(const Surface* surface, const Vector& source,
65 const Vector& size, const Vector& dest, int layer,
66 Uint32 drawing_effect = NONE_EFFECT);
68 void draw_text(Font* font, const std::string& text, const Vector& position,
69 int layer, Uint32 drawing_effect = NONE_EFFECT);
70 /** draws aligned text */
71 void draw_text_center(Font* font, const std::string& text,
72 const Vector& position, int layer, Uint32 drawing_effect = NONE_EFFECT);
73 /** draws a color gradient onto the whole screen */
74 void draw_gradient(Color from, Color to, int layer);
75 /** fills a rectangle */
76 void draw_filled_rect(const Vector& topleft, const Vector& size,
77 Color color, int layer);
79 /** Processes all pending drawing requests and flushes the list */
82 const Vector& get_translation() const
84 return transform.translation;
86 void set_translation(const Vector& newtranslation)
88 transform.translation = newtranslation;
91 void push_transform();
94 /** apply that effect in the next draws (effects are listed on surface.h) */
95 void set_drawing_effect(int effect);
101 Vector translation; // only translation for now...
103 Vector apply(const Vector& v) const
105 return v - translation;
111 /// the transform stack
112 std::vector<Transform> transformstack;
113 /// the currently active transform
118 SURFACE, SURFACE_PART, TEXT, GRADIENT, FILLRECT
121 struct SurfacePartRequest
123 const Surface* surface;
133 struct GradientRequest
139 struct FillRectRequest
145 struct DrawingRequest
148 Uint32 drawing_effect;
155 bool operator<(const DrawingRequest& other) const
157 return layer < other.layer;
161 void draw_surface_part(DrawingRequest& request);
162 void draw_text(DrawingRequest& request);
163 void draw_gradient(DrawingRequest& request);
164 void draw_filled_rect(DrawingRequest& request);
166 typedef std::vector<DrawingRequest> DrawingRequests;
167 DrawingRequests drawingrequests;
170 } //namespace SuperTux
172 #endif /*SUPERTUX_DRAWINGCONTEXT_H*/