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"
33 // some constants for predefined layer values
35 LAYER_BACKGROUND0 = -300,
36 LAYER_BACKGROUND1 = -200,
37 LAYER_BACKGROUNDTILES = -100,
40 LAYER_FOREGROUNDTILES = 200,
41 LAYER_FOREGROUND0 = 300,
42 LAYER_FOREGROUND1 = 400,
47 * This class provides functions for drawing things on screen. It also
48 * maintains a stack of transforms that are applied to graphics.
56 /** Adds a drawing request for a surface into the request list */
57 void draw_surface(const Surface* surface, const Vector& position, int layer,
58 Uint32 drawing_effect = NONE_EFFECT);
59 /** Adds a drawing request for part of a surface */
60 void draw_surface_part(const Surface* surface, const Vector& source,
61 const Vector& size, const Vector& dest, int layer,
62 Uint32 drawing_effect = NONE_EFFECT);
64 void draw_text(Font* font, const std::string& text, const Vector& position,
65 int layer, Uint32 drawing_effect = NONE_EFFECT);
66 /** draws aligned text */
67 void draw_text_center(Font* font, const std::string& text,
68 const Vector& position, int layer, Uint32 drawing_effect = NONE_EFFECT);
69 /** draws a color gradient onto the whole screen */
70 void draw_gradient(Color from, Color to, int layer);
71 /** fills a rectangle */
72 void draw_filled_rect(const Vector& topleft, const Vector& size,
73 Color color, int layer);
75 /** Processes all pending drawing requests and flushes the list */
78 const Vector& get_translation() const
79 { return transform.translation; }
80 void set_translation(const Vector& newtranslation)
81 { transform.translation = newtranslation; }
83 void push_transform();
86 /** apply that effect in the next draws (effects are listed on surface.h) */
87 void set_drawing_effect(int effect);
93 Vector translation; // only translation for now...
95 Vector apply(const Vector& v) const
97 return v - translation;
103 /// the transform stack
104 std::vector<Transform> transformstack;
105 /// the currently active transform
110 SURFACE, SURFACE_PART, TEXT, GRADIENT, FILLRECT
113 struct SurfacePartRequest
115 const Surface* surface;
125 struct GradientRequest
131 struct FillRectRequest
137 struct DrawingRequest
140 Uint32 drawing_effect;
147 bool operator<(const DrawingRequest& other) const
149 return layer < other.layer;
153 void draw_surface_part(DrawingRequest& request);
154 void draw_text(DrawingRequest& request);
155 void draw_gradient(DrawingRequest& request);
156 void draw_filled_rect(DrawingRequest& request);
158 typedef std::vector<DrawingRequest> DrawingRequests;
159 DrawingRequests drawingrequests;
162 #endif /*SUPERTUX_DRAWINGCONTEXT_H*/