lots of code cleanup, reordering, trimming public API, bugfixes

## FbTk/ImageControl.hh:

* moved 'getSqrt()' over to TextureRender.cc because it is used only there
* removed unused members m_root_window
* use std::vector<> for colors and for the gradient buffers.

## FbTk/ImageControl.cc:

* fixed memory leak in '~ImageControl', 'pixels' where not deleted[]
  at all. switched to std::vector, non-issue anymore.
* moved identical code into functions 'allocateUnallocatedColors', 'initColortables'

## FbTk/TextureRenderer:

* removed 'from', 'to', 'interlaced' from class, only used in
  'renderGradient()' and are actually part of the given
  texture.
* removed 'xtable', 'ytable' from class, only used in
  'renderGradient()'
* removed 'colors' from the class, is part of 'control'
* moved render actions (invert, bevel1, bevel2, *gradient), they need more
  love but for now this is sufficient

1 files changed, 2 insertions, 25 deletions

diff --git a/src/FbTk/TextureRender.hh b/src/FbTk/TextureRender.hh
index 158625e..7896c06 100644
--- a/src/FbTk/TextureRender.hh
+++ b/src/FbTk/TextureRender.hh
@@ -31,7 +31,6 @@
 
 namespace FbTk {
 
-class Color;
 class ImageControl;
 class Texture;
 
@@ -42,8 +41,7 @@ class Texture;
 class TextureRender {
 public:
     TextureRender(ImageControl &ic, unsigned int width, unsigned int height, 
-                  Orientation orient = ROT0,
-                  XColor *_colors=0, size_t num_colors=0);
+                  Orientation orient = ROT0);
     ~TextureRender();
     /// render to pixmap
     Pixmap render(const FbTk::Texture &src_texture);
@@ -66,36 +64,15 @@ private:
        @returns allocated and rendered XImage, user is responsible to deallocate
     */
     XImage *renderXImage();
-    /**
-       @name render functions
-    */
-    //@{
-    void invert();
-    void bevel1();
-    void bevel2();
-    void dgradient();
-    void egradient();
-    void hgradient();
-    void pgradient();
-    void rgradient();
-    void vgradient();
-    void cdgradient();
-    void pcgradient();
-    //@}
 
     ImageControl &control;
-    bool interlaced;
-
-    XColor *colors; // color table
 
-    const FbTk::Color *from, *to;
     int red_offset, green_offset, blue_offset, red_bits, green_bits, blue_bits,
-        ncolors, cpc, cpccpc;
+        cpc, cpccpc;
     unsigned char *red, *green, *blue;
     const unsigned char *red_table, *green_table, *blue_table;
     Orientation orientation;
     unsigned int width, height;
-    unsigned int *xtable, *ytable;
 };
 
 } // end namespace FbTk