Added a function to draw text on center of screen for comodity.

[supertux.git] / lib / video / drawing_context.h

diff --git a/lib/video/drawing_context.h b/lib/video/drawing_context.h
index b200e7b..6c7e774 100644 (file)
--- a/lib/video/drawing_context.h
+++ b/lib/video/drawing_context.h
@@ -24,9 +24,9 @@
 
 #include "SDL.h"
 
-#include "math/vector.h"
-#include "video/screen.h"
-#include "video/surface.h"
+#include "../math/vector.h"
+#include "../video/screen.h"
+#include "../video/surface.h"
 
 namespace SuperTux
   {
@@ -47,6 +47,7 @@ namespace SuperTux
     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.
@@ -57,42 +58,50 @@ namespace SuperTux
       DrawingContext();
       ~DrawingContext();
 
-      /** Adds a drawing request for a surface into the request list */
+      /// Adds a drawing request for a surface into the request list.
       void draw_surface(const Surface* surface, const Vector& position, int layer,
                         Uint32 drawing_effect = NONE_EFFECT);
-      /** Adds a drawing request for part of a surface */
+      /// 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,
                              Uint32 drawing_effect = NONE_EFFECT);
-      /** draws a text */
+      /// Draws a text.
       void draw_text(Font* font, const std::string& text, const Vector& position,
-                     int layer, Uint32 drawing_effect = NONE_EFFECT);
-      /** draws aligned text */
-      void draw_text_center(Font* font, const std::string& text,
-                            const Vector& position, int layer, Uint32 drawing_effect = NONE_EFFECT);
-      /** draws a color gradient onto the whole screen */
+                     int allignment, int layer,
+                     Uint32 drawing_effect = NONE_EFFECT);
+
+      /// Draws text on screen center (feed Vector.x with a 0).
+      /// This is the same as draw_text() with a screen->w/2 position and
+      /// allignment set to LEFT_ALLIGN
+      void draw_center_text(Font* font, const std::string& text,
+                           const Vector& position, int layer,
+                           Uint32 drawing_effect = NONE_EFFECT);
+      /// Draws a color gradient onto the whole screen */
       void draw_gradient(Color from, Color to, int layer);
-      /** fills a rectangle */
+      /// Fills a rectangle.
       void draw_filled_rect(const Vector& topleft, const Vector& size,
                             Color color, int layer);
 
-      /** Processes all pending drawing requests and flushes the list */
+      /// Processes all pending drawing requests and flushes the list.
       void do_drawing();
 
       const Vector& get_translation() const
-        {
-          return transform.translation;
-        }
+        {  return transform.translation;  }
+      Uint32 get_drawing_effect() const
+        {  return transform.draw_effect;  }
+
       void set_translation(const Vector& newtranslation)
-      {
-        transform.translation = newtranslation;
-      }
+        {  transform.translation = newtranslation;  }
 
       void push_transform();
       void pop_transform();
 
-      /** apply that effect in the next draws (effects are listed on surface.h) */
+      /// Apply that effect in the next draws (effects are listed on surface.h).
       void set_drawing_effect(int effect);
+      /// apply that zoom in the next draws */
+      void set_zooming(float zoom);
+      /// apply that alpha in the next draws */
+      void set_alpha(int alpha);
 
     private:
       class Transform
@@ -105,7 +114,9 @@ namespace SuperTux
               return v - translation;
             }
 
-          int draw_effect;
+          Uint32 draw_effect;
+          float zoom;
+          int alpha;
         };
 
       /// the transform stack
@@ -128,6 +139,7 @@ namespace SuperTux
         {
           Font* font;
           std::string text;
+          int allignment;
         };
 
       struct GradientRequest
@@ -146,6 +158,8 @@ namespace SuperTux
         {
           int layer;
           Uint32 drawing_effect;
+          float zoom;
+          int alpha;
 
           RequestType type;
           Vector pos;
@@ -160,6 +174,7 @@ namespace SuperTux
 
       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);