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1 files changed, 242 insertions, 0 deletions

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+// Image.hh for Blackbox - an X11 Window manager
+// Copyright (c) 1997 - 2000 Brad Hughes (bhughes@tcac.net)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+#ifndef   _IMAGE_HH_
+#define   _IMAGE_HH_
+
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+
+#include "Timer.hh"
+
+class BImage;
+class BImageControl;
+
+
+class BColor {
+private:
+  int allocated;
+  unsigned char red, green, blue;
+  unsigned long pixel;
+
+public:
+  BColor(char r = 0, char g = 0, char b = 0)
+    { red = r; green = g; blue = b; pixel = 0; allocated = 0; }
+
+  inline const int &isAllocated(void) const { return allocated; }
+
+  inline const unsigned char &getRed(void) const { return red; }
+  inline const unsigned char &getGreen(void) const { return green; }
+  inline const unsigned char &getBlue(void) const { return blue; }
+
+  inline const unsigned long &getPixel(void) const { return pixel; }
+
+  inline void setAllocated(int a) { allocated = a; }
+  inline void setRGB(char r, char g, char b) { red = r; green = g; blue = b; }
+  inline void setPixel(unsigned long p) { pixel = p; }
+};
+
+
+class BTexture {
+private:
+  BColor color, colorTo, hiColor, loColor;
+  unsigned long texture;
+
+public:
+  BTexture(void) { texture = 0; }
+
+  inline BColor *getColor(void) { return &color; }
+  inline BColor *getColorTo(void) { return &colorTo; }
+  inline BColor *getHiColor(void) { return &hiColor; }
+  inline BColor *getLoColor(void) { return &loColor; }
+
+  inline const unsigned long &getTexture(void) const { return texture; }
+
+  inline void setTexture(unsigned long t) { texture = t; }
+  inline void addTexture(unsigned long t) { texture |= t; }
+};
+
+
+// bevel options
+#define BImage_Flat             (1l<<1)
+#define BImage_Sunken           (1l<<2)
+#define BImage_Raised           (1l<<3)
+
+// textures
+#define BImage_Solid            (1l<<4)
+#define BImage_Gradient         (1l<<5)
+
+// gradients
+#define BImage_Horizontal       (1l<<6)
+#define BImage_Vertical         (1l<<7)
+#define BImage_Diagonal         (1l<<8)
+#define BImage_CrossDiagonal    (1l<<9)
+#define BImage_Rectangle        (1l<<10)
+#define BImage_Pyramid          (1l<<11)
+#define BImage_PipeCross        (1l<<12)
+#define BImage_Elliptic         (1l<<13)
+
+// bevel types
+#define BImage_Bevel1           (1l<<14)
+#define BImage_Bevel2           (1l<<15)
+
+// inverted image
+#define BImage_Invert           (1l<<16)
+
+// parent relative image
+#define BImage_ParentRelative   (1l<<17)
+
+#ifdef    INTERLACE
+// fake interlaced image
+#  define BImage_Interlaced     (1l<<18)
+#endif // INTERLACE
+
+#include "BaseDisplay.hh"
+#include "LinkedList.hh"
+
+
+class BImage {
+private:
+  BImageControl *control;
+
+#ifdef    INTERLACE
+  Bool interlaced;
+#endif // INTERLACE
+
+  XColor *colors;
+
+  BColor *from, *to;
+  int red_offset, green_offset, blue_offset, red_bits, green_bits, blue_bits,
+    ncolors, cpc, cpccpc;
+  unsigned char *red, *green, *blue, *red_table, *green_table, *blue_table;
+  unsigned int width, height, *xtable, *ytable;
+
+
+protected:
+  Pixmap renderPixmap(void);
+
+  XImage *renderXImage(void);
+
+  void invert(void);
+  void bevel1(void);
+  void bevel2(void);
+  void dgradient(void);
+  void egradient(void);
+  void hgradient(void);
+  void pgradient(void);
+  void rgradient(void);
+  void vgradient(void);
+  void cdgradient(void);
+  void pcgradient(void);
+
+
+public:
+  BImage(BImageControl *, unsigned int, unsigned int);
+  ~BImage(void);
+
+  Pixmap render(BTexture *);
+  Pixmap render_solid(BTexture *);
+  Pixmap render_gradient(BTexture *);
+};
+
+
+class BImageControl : public TimeoutHandler {
+private:
+  Bool dither;
+  BaseDisplay *basedisplay;
+  ScreenInfo *screeninfo;
+#ifdef    TIMEDCACHE
+  BTimer *timer;
+#endif // TIMEDCACHE
+
+  Colormap colormap;
+
+  Window window;
+  XColor *colors;
+  int colors_per_channel, ncolors, screen_number, screen_depth,
+    bits_per_pixel, red_offset, green_offset, blue_offset,
+    red_bits, green_bits, blue_bits;
+  unsigned char red_color_table[256], green_color_table[256],
+    blue_color_table[256];
+  unsigned int *grad_xbuffer, *grad_ybuffer, grad_buffer_width,
+    grad_buffer_height;
+  unsigned long *sqrt_table, cache_max;
+
+  typedef struct Cache {
+    Pixmap pixmap;
+
+    unsigned int count, width, height;
+    unsigned long pixel1, pixel2, texture;
+  } Cache;
+
+  LinkedList<Cache> *cache;
+
+
+protected:
+  Pixmap searchCache(unsigned int, unsigned int, unsigned long, BColor *,
+                     BColor *);
+
+
+public:
+  BImageControl(BaseDisplay *, ScreenInfo *, Bool = False, int = 4,
+                unsigned long = 300000l, unsigned long = 200l);
+  virtual ~BImageControl(void);
+
+  inline BaseDisplay *getBaseDisplay(void) { return basedisplay; }
+
+  inline const Bool &doDither(void) { return dither; }
+  inline const Colormap &getColormap(void) const { return colormap; }
+  inline ScreenInfo *getScreenInfo(void) { return screeninfo; }
+
+  inline const Window &getDrawable(void) const { return window; }
+
+  inline Visual *getVisual(void) { return screeninfo->getVisual(); }
+
+  inline const int &getBitsPerPixel(void) const { return bits_per_pixel; }
+  inline const int &getDepth(void) const { return screen_depth; }
+  inline const int &getColorsPerChannel(void) const
+    { return colors_per_channel; }
+
+  unsigned long getColor(const char *);
+  unsigned long getColor(const char *, unsigned char *, unsigned char *,
+                         unsigned char *);
+  unsigned long getSqrt(unsigned int);
+
+  Pixmap renderImage(unsigned int, unsigned int, BTexture *);
+
+  void installRootColormap(void);
+  void removeImage(Pixmap);
+  void getColorTables(unsigned char **, unsigned char **, unsigned char **,
+                      int *, int *, int *, int *, int *, int *);
+  void getXColorTable(XColor **, int *);
+  void getGradientBuffers(unsigned int, unsigned int,
+                          unsigned int **, unsigned int **);
+  void setDither(Bool d) { dither = d; }
+  void setColorsPerChannel(int);
+  void parseTexture(BTexture *, char *);
+  void parseColor(BColor *, char * = 0);
+
+  virtual void timeout(void);
+};
+
+
+#endif // __Image_hh
+