-// $Id: drawing_context.h 2334 2005-04-04 16:26:14Z grumbel $
+// SuperTux
+// Copyright (C) 2006 Matthias Braun <matze@braunis.de>
//
-// SuperTux - A Jump'n Run
-// Copyright (C) 2004 Matthias Braun <matze@braunis.de
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License
-// as published by the Free Software Foundation; either version 2
-// of the License, or (at your option) any later version.
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-#ifndef SUPERTUX_DRAWINGCONTEXT_H
-#define SUPERTUX_DRAWINGCONTEXT_H
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
-#include <vector>
+#ifndef HEADER_SUPERTUX_VIDEO_DRAWING_CONTEXT_HPP
+#define HEADER_SUPERTUX_VIDEO_DRAWING_CONTEXT_HPP
+
+#include <memory>
#include <string>
-#include <stdint.h>
+#include <vector>
-#include <SDL.h>
#include <stdint.h>
+#include "math/rect.hpp"
#include "math/vector.hpp"
-#include "video/screen.hpp"
-#include "video/surface.hpp"
+#include "obstack/obstack.h"
+#include "video/color.hpp"
+#include "video/drawing_request.hpp"
#include "video/font.hpp"
+#include "video/texture.hpp"
class Surface;
+class Texture;
+class Renderer;
+class Lightmap;
-// some constants for predefined layer values
-enum {
- LAYER_BACKGROUND0 = -300,
- LAYER_BACKGROUND1 = -200,
- LAYER_BACKGROUNDTILES = -100,
- LAYER_TILES = 0,
- LAYER_OBJECTS = 100,
- LAYER_FOREGROUNDTILES = 200,
- LAYER_FOREGROUND0 = 300,
- LAYER_FOREGROUND1 = 400,
- LAYER_GUI = 500
-};
-
-/// Handles drawing of things.
/**
* This class provides functions for drawing things on screen. It also
* maintains a stack of transforms that are applied to graphics.
class DrawingContext
{
public:
- DrawingContext(SDL_Surface* targetsurface = 0);
+ DrawingContext();
~DrawingContext();
-
+
+ void init_renderer();
+
/// Adds a drawing request for a surface into the request list.
void draw_surface(const Surface* surface, const Vector& position,
int layer);
+ /// Adds a drawing request for a surface into the request list.
+ void draw_surface(const Surface* surface, const Vector& position,
+ float angle, const Color& color, const Blend& blend,
+ int layer);
/// Adds a drawing request for part of a surface.
void draw_surface_part(const Surface* surface, const Vector& source,
const Vector& size, const Vector& dest, int layer);
/// Draws a text.
void draw_text(const Font* font, const std::string& text,
- const Vector& position, FontAlignment alignment, int layer);
-
+ const Vector& position, FontAlignment alignment, int layer, Color color = Color(1.0,1.0,1.0));
+
/// Draws text on screen center (feed Vector.x with a 0).
/// This is the same as draw_text() with a SCREEN_WIDTH/2 position and
- /// alignment set to LEFT_ALLIGN
+ /// alignment set to LEFT_ALIGN
void draw_center_text(const Font* font, const std::string& text,
- const Vector& position, int layer);
+ const Vector& position, int layer, Color color = Color(1.0,1.0,1.0));
/// Draws a color gradient onto the whole screen */
- void draw_gradient(Color from, Color to, int layer);
+ void draw_gradient(const Color& from, const Color& to, int layer);
/// Fills a rectangle.
void draw_filled_rect(const Vector& topleft, const Vector& size,
- Color color, int layer);
-
+ const Color& color, int layer);
+ void draw_filled_rect(const Rect& rect, const Color& color, int layer);
+ void draw_filled_rect(const Rect& rect, const Color& color, float radius, int layer);
+
+ void draw_inverse_ellipse(const Vector& pos, const Vector& size, const Color& color, int layer);
+
/// Processes all pending drawing requests and flushes the list.
void do_drawing();
-
+
const Vector& get_translation() const
{ return transform.translation; }
-
+
void set_translation(const Vector& newtranslation)
{ transform.translation = newtranslation; }
-
+
void push_transform();
void pop_transform();
-
+
/// Apply that effect in the next draws (effects are listed on surface.h).
- void set_drawing_effect(uint32_t effect);
+ void set_drawing_effect(DrawingEffect effect);
/// return currently applied drawing effect
- uint32_t get_drawing_effect() const;
- /// apply that zoom in the next draws */
- void set_zooming(float zoom);
- /// apply that alpha in the next draws */
- void set_alpha(uint8_t alpha);
+ DrawingEffect get_drawing_effect() const;
+ /// apply that alpha in the next draws (1.0 means fully opaque) */
+ void set_alpha(float alpha);
/// return currently set alpha
- uint8_t get_alpha() const;
-
+ float get_alpha() const;
+
+ /// on next update, set color to lightmap's color at position
+ void get_light(const Vector& position, Color* color );
+
+ typedef ::Target Target;
+ static const Target NORMAL = ::NORMAL;
+ static const Target LIGHTMAP = ::LIGHTMAP;
+ void push_target();
+ void pop_target();
+ void set_target(Target target);
+
+ void set_ambient_color( Color new_color );
+
+ /**
+ * requests that a screenshot be taken after the next frame has been rendered
+ */
+ void take_screenshot();
+
private:
class Transform
{
public:
Vector translation;
- uint32_t drawing_effect;
- float zoom;
- uint8_t alpha;
-
- Transform()
- : drawing_effect(NONE_EFFECT), zoom(1), alpha(255)
+ DrawingEffect drawing_effect;
+ float alpha;
+
+ Transform() :
+ translation(),
+ drawing_effect(NO_EFFECT),
+ alpha(1.0f)
{ }
-
+
Vector apply(const Vector& v) const
{
return v - translation;
}
};
-
+
+ Renderer *renderer;
+ Lightmap *lightmap;
+
/// the transform stack
std::vector<Transform> transformstack;
/// the currently active transform
Transform transform;
-
- enum RequestType
- {
- SURFACE, SURFACE_PART, TEXT, GRADIENT, FILLRECT
- };
-
- struct SurfacePartRequest
- {
- const Surface* surface;
- Vector source, size;
- };
-
- struct TextRequest
- {
- const Font* font;
- std::string text;
- FontAlignment alignment;
- };
-
- struct GradientRequest
- {
- Color top, bottom;
- Vector size;
- };
-
- struct FillRectRequest
- {
- Color color;
- Vector size;
- };
-
- struct DrawingRequest
- {
- RequestType type;
- Vector pos;
-
- int layer;
- uint32_t drawing_effect;
- float zoom;
- int alpha;
-
- void* request_data;
-
- bool operator<(const DrawingRequest& other) const
- {
- return layer < other.layer;
- }
- };
-
- void draw_surface_part(DrawingRequest& request);
- void draw_text(DrawingRequest& request);
- void draw_text_center(DrawingRequest& request);
- void draw_gradient(DrawingRequest& request);
- void draw_filled_rect(DrawingRequest& request);
-
- typedef std::vector<DrawingRequest> DrawingRequests;
- DrawingRequests drawingrequests;
-
- SDL_Surface* screen;
+
+ std::vector<Blend> blend_stack;
+ Blend blend_mode;
+
+ typedef std::vector<DrawingRequest*> DrawingRequests;
+
+ void handle_drawing_requests(DrawingRequests& requests);
+
+ DrawingRequests drawing_requests;
+ DrawingRequests lightmap_requests;
+
+ DrawingRequests* requests;
+ Color ambient_color;
+
+ Target target;
+ std::vector<Target> target_stack;
+
+ /* obstack holding the memory of the drawing requests */
+ struct obstack obst;
+
+ bool screenshot_requested; /**< true if a screenshot should be taken after the next frame has been rendered */
+
+private:
+ DrawingContext(const DrawingContext&);
+ DrawingContext& operator=(const DrawingContext&);
};
#endif
+
+/* EOF */
projects / supertux.git / blobdiff