xmms-titlefader/Xlib_textfader.h

/**
 *
 * Copyright (c) 2002, Marc Bruenink
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * 3. Neither the name of the author nor the names of his contributors may be
 * used to endorse or promote products derived from this software without
 * specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
*/


#ifndef _XLIB_TEXTFADER_H_
#define _XLIB_TEXTFADER_H_

#include <X11/Xlib.h>
#include <X11/Xcms.h>   // color 
#include <X11/Xutil.h> // XGetPixel

#include <climits> // MAX_INT
#include <ostream.h>
#include <unistd.h>
#include <stdlib.h> //rand() 

// class define

//text will be faded in the center of the screen. 
#define TF_WINDOW_CENTER (1<<1)

// Coordinates marks the middlex and middley of the text 
// default: upper left corner of text
//#define TF_COORDINATES_CENTER (1<<2)


// some defines for the arrangement method
// first 2 bytes marks the row and last 2 bytes the column
// use XOR !!!!
#define TF_COORDINATES_UPPER_LEFT 	((1<<2)		|(1<<4))
#define TF_COORDINATES_UPPER_CENTER 	((1<<2)		|(1<<5))
#define TF_COORDINATES_UPPER_RIGHT  	((1<<2)		|(1<<4)|(1<<5))
#define TF_COORDINATES_CENTER_LEFT	((1<<3)		|(1<<4))
#define TF_COORDINATES_CENTER_CENTER	((1<<3)		|(1<<5))
#define TF_COORDINATES_CENTER_RIGHT	((1<<3)		|(1<<4)|(1<<5))
#define TF_COORDINATES_LOWER_LEFT		((1<<2)|(1<<3)	|(1<<4))
#define TF_COORDINATES_LOWER_CENTER	((1<<2)|(1<<3)	|(1<<5))
#define TF_COORDINATES_LOWER_RIGHT	((1<<2)|(1<<3)	|(1<<4)|(1<<5))
#define TF_COORDINATES_SET(old, new)   ((old & (~((unsigned long) (1<<2)|(1<<3)|(1<<4)|(1<<5)))) | new)
#define TF_COORDINATES_GET(old)		(old & ((unsigned long)(1<<2)|(1<<3)|(1<<4)|(1<<5)))


class Xlib_textfader {

   Display *dpy;
   int screen;
   int screenHeight, screenWidth;
   int screenDepth;
   Visual *screenVisual;
   XFontStruct *font;
   XGCValues gc_val;
   unsigned long gc_valValueMask;
   XSetWindowAttributes attr;
   unsigned long attrValueMask;

   XColor textColor;

   // fade positions
   int pos_x, pos_y;

 public:

   Xlib_textfader();
   ~Xlib_textfader();



   // fade section
   int fade(char* text, int length, unsigned int fadeTime, unsigned long optionmask);
   inline int get_fade_position_x() {
     return pos_x;
   }
   inline int get_fade_position_y() {
     return pos_y;
   }
   inline void set_fade_position_x(int _x){
     pos_x = _x;
   }
   inline void set_fade_position_y(int _y) {
     pos_y = _y;
   }
   inline void set_fade_position(int _x, int _y){
     pos_y = _y;
     pos_x = _x;
   }



   // font section
   int get_font_height();
   int get_font_width();
   inline XFontStruct* get_font(){
     return font;
   }
   int set_font(char* name);
   char** get_list_fonts(int* count, char *pattern);


   // screen section
   inline int get_screen_height(){
     return screenHeight;
   }
   inline int get_screen_width() {
     return screenWidth;
   }

   // gc values section
   int set_text_color(char* name);
   int set_text_color(double red, double green, double blue);
   inline unsigned long get_text_color(){
     return gc_val.foreground;
   }


};// end class 

#endif