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/* $Id: widget.h,v 1.12 2005/01/18 06:30:24 reinelt Exp $
 *
 * generic widget handling
 *
 * Copyright (C) 2003, 2004 Michael Reinelt <reinelt@eunet.at>
 * Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
 *
 * This file is part of LCD4Linux.
 *
 * LCD4Linux 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, or (at your option)
 * any later version.
 *
 * LCD4Linux is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *
 * $Log: widget.h,v $
 * Revision 1.12  2005/01/18 06:30:24  reinelt
 * added (C) to all copyright statements
 *
 * Revision 1.11  2004/06/26 12:05:00  reinelt
 *
 * uh-oh... the last CVS log message messed up things a lot...
 *
 * Revision 1.10  2004/06/26 09:27:21  reinelt
 *
 * added '-W' to CFLAGS
 * changed all C++ comments to C ones
 * cleaned up a lot of signed/unsigned mistakes
 *
 * Revision 1.9  2004/06/20 10:09:56  reinelt
 *
 * 'const'ified the whole source
 *
 * Revision 1.8  2004/03/03 03:47:04  reinelt
 * big patch from Martin Hejl:
 * - use qprintf() where appropriate
 * - save CPU cycles on gettimeofday()
 * - add quit() functions to free allocated memory
 * - fixed lots of memory leaks
 *
 * Revision 1.7  2004/01/14 11:33:00  reinelt
 * new plugin 'uname' which does what it's called
 * text widget nearly finished
 * first results displayed on MatrixOrbital
 *
 * Revision 1.6  2004/01/13 08:18:20  reinelt
 * timer queues added
 * liblcd4linux deactivated turing transformation to new layout
 *
 * Revision 1.5  2004/01/11 18:26:02  reinelt
 * further widget and layout processing
 *
 * Revision 1.4  2004/01/10 20:22:33  reinelt
 * added new function 'cfg_list()' (not finished yet)
 * added layout.c (will replace processor.c someday)
 * added widget_text.c (will be the first and most important widget)
 * modified lcd4linux.c so that old-style configs should work, too
 *
 * Revision 1.3  2004/01/10 17:34:40  reinelt
 * further matrixOrbital changes
 * widgets initialized
 *
 * Revision 1.2  2003/10/05 17:58:50  reinelt
 * libtool junk; copyright messages cleaned up
 *
 * Revision 1.1  2003/09/19 03:51:29  reinelt
 * minor fixes, widget.c added
 *
 */


#ifndef _WIDGET_H_
#define _WIDGET_H_


struct WIDGET; /* forward declaration */


typedef struct WIDGET_CLASS {
  char *name;
  int (*init)   (struct WIDGET *Self);
  int (*draw)   (struct WIDGET *Self);
  int (*quit)   (struct WIDGET *Self);
} WIDGET_CLASS;


typedef struct WIDGET{
  char         *name;
  WIDGET_CLASS *class;
  int           row;
  int           col;
  void         *data;
} WIDGET;



int  widget_register   (WIDGET_CLASS *widget);
void widget_unregister (void);
int  widget_add        (const char *name, const int row, const int col);

#endif
or: #008800 } /* Operator.Word */ .highlight .w { color: #bbbbbb } /* Text.Whitespace */ .highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
/* $Id: drv_X11.c,v 1.2 2004/05/25 14:26:29 reinelt Exp $
 *
 * new style X11 Driver for LCD4Linux 
 *
 * Copyright 1999-2004 Michael Reinelt <reinelt@eunet.at>
 * Copyright 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
 *
 * based on the old XWindow.c which is
 * Copyright 2000 Herbert Rosmanith <herp@wildsau.idv.uni-linz.ac.at>
 *
 * This file is part of LCD4Linux.
 *
 * LCD4Linux 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, or (at your option)
 * any later version.
 *
 * LCD4Linux is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *
 * $Log: drv_X11.c,v $
 * Revision 1.2  2004/05/25 14:26:29  reinelt
 *
 * added "Image" driver (was: Raster.c) for PPM and PNG creation
 * fixed some glitches in the X11 driver
 *
 * Revision 1.1  2004/02/24 05:55:04  reinelt
 *
 * X11 driver ported
 *
 */

/* 
 *
 * exported fuctions:
 *
 * struct DRIVER drv_X11
 *
 */


#include "config.h"

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <termios.h>
#include <fcntl.h>
#include <sys/time.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>

#include "debug.h"
#include "cfg.h"
#include "timer.h"
#include "plugin.h"
#include "widget.h"
#include "widget_text.h"
#include "widget_icon.h"
#include "widget_bar.h"
#include "drv.h"
#include "drv_generic_graphic.h"

#ifdef WITH_DMALLOC
#include <dmalloc.h>
#endif

static char Name[]="X11";

static char *fg_col,*bg_col,*hg_col;

static int pixel  = -1;	// pointsize in pixel
static int pgap   =  0;	// gap between points
static int rgap   =  0;	// row gap between lines
static int cgap   =  0;	// column gap between characters
static int border =  0;	// window border

static int dimx, dimy;	// total window dimension in pixel

static unsigned char *drv_X11_FB=NULL;

static Display *dp;
static int sc, dd;
static Window w, rw;
static Visual *vi;
static GC fg_gc, bg_gc, hg_gc;
static Colormap cm;
static XColor fg_xc, bg_xc, hg_xc;
static Pixmap pm;


// ****************************************
// ***  hardware dependant functions    ***
// ****************************************

static void drv_X11_blit(int row, int col, int height, int width)
{
  int r, c;
  int dirty = 0;

  for (r=row; r<row+height && r<DROWS; r++) {
    int y = border + (r/YRES)*rgap + r*(pixel+pgap);
    for (c=col; c<col+width && c<DCOLS; c++) {
      int x = border + (c/XRES)*cgap + c*(pixel+pgap);
      unsigned char p = drv_generic_graphic_FB[r*LCOLS+c];
      if (drv_X11_FB[r*DCOLS+c] != p) {
	XFillRectangle( dp, w, p? fg_gc:hg_gc, x, y, pixel, pixel);
	drv_X11_FB[r*DCOLS+c] = p;
	dirty=1;
      }
    }
  }
  if (dirty) {
    XSync(dp, False);
  }
}


static void drv_X11_expose(int x, int y, int width, int height)
{
  /*
   * theory of operation:
   * instead of the old, fully-featured but complicated update
   * region calculation, we do an update of the whole display,
   * but check before every pixel if the pixel region is inside
   * the update region.
   */
  
  int r,  c;
  int x0, y0;
  int x1, y1;
  
  x0 = x-pixel;
  x1 = x+pixel+width;
  y0 = y-pixel;
  y1 = y+pixel+height;

  for (r=0; r<DROWS; r++) {
    int yc = border + (r/YRES)*rgap + r*(pixel+pgap);
    if (yc<y0 || yc>y1) continue;
    for (c=0; c<DCOLS; c++) {
      int xc = border + (c/XRES)*cgap + c*(pixel+pgap);
      if (xc<x0 || xc>x1) continue;
      XFillRectangle( dp, w, drv_generic_graphic_FB[r*LCOLS+c]? fg_gc:hg_gc, xc, yc, pixel, pixel);
    }
  }
  XSync(dp, False);
}


static void drv_X11_timer (void *notused)
{
  XEvent ev;
  
  if (XCheckWindowEvent(dp, w, ExposureMask, &ev)==0) return;
  if (ev.type==Expose) {
    drv_X11_expose (ev.xexpose.x, ev.xexpose.y, ev.xexpose.width, ev.xexpose.height);
  }
}


static int drv_X11_start (char *section)
{
  char *s;
  XSetWindowAttributes wa;
  XSizeHints sh;
  XColor dummy;
  XEvent ev;


  // read display size from config
  if (sscanf(s=cfg_get(section, "Size", "120x32"), "%dx%d", &DCOLS, &DROWS)!=2 || DCOLS<1 || DROWS<1) {
    error ("%s: bad %s.Size '%s' from %s", Name, section, s, cfg_source());
    free(s);
    return -1;
  }
  free(s);
  
  if (sscanf(s=cfg_get(section, "font", "5x8"), "%dx%d", &XRES, &YRES)!=2 || XRES<1|| YRES<1) {
    error ("%s: bad %s.font '%s' from %s", Name, section, s, cfg_source());
    free(s);
    return -1;
  }
  free(s);
  
  if (sscanf(s=cfg_get(section, "pixel", "4+1"), "%d+%d", &pixel, &pgap)!=2 || pixel<1 || pgap<0) {
    error ("%s: bad %s.pixel '%s' from %s", Name, section, s, cfg_source());
    free(s);
    return -1;
  }
  free(s);
  
  if (sscanf(s=cfg_get(section, "gap", "-1x-1"), "%dx%d", &cgap, &rgap)!=2 || cgap<-1 || rgap<-1) {
    error ("%s: bad %s.gap '%s' from %s", Name, section, s, cfg_source());
    free(s);
    return -1;
  }
  free(s);

  if (rgap<0) rgap=pixel+pgap;
  if (cgap<0) cgap=pixel+pgap;
  
  if (cfg_number(section, "border", 0, 0, 1000000, &border)<0) return -1;

  fg_col = cfg_get(section, "foreground", "#000000");
  bg_col = cfg_get(section, "background", "#80d000");
  hg_col = cfg_get(section, "halfground", "#70c000");
  if (*fg_col=='\\') fg_col++;
  if (*bg_col=='\\') bg_col++;
  if (*hg_col=='\\') hg_col++;


  drv_X11_FB = malloc(DCOLS*DROWS);
  if (drv_X11_FB==NULL) {
    error ("%s: framebuffer could not be allocated: malloc() failed", Name);
    return -1;
  }

  // init with 255 so all 'halfground' pixels will be drawn
  memset(drv_X11_FB, 255, DCOLS*DROWS*sizeof(*drv_X11_FB));

  if ((dp=XOpenDisplay(NULL))==NULL) {
    error ("%s: can't open display", Name);
    return -1;
  }
  
  sc    = DefaultScreen(dp);
  fg_gc = DefaultGC(dp, sc);
  vi    = DefaultVisual(dp, sc);
  dd    = DefaultDepth(dp, sc);
  rw    = DefaultRootWindow(dp);
  cm    = DefaultColormap(dp, sc);

  if (XAllocNamedColor(dp, cm, fg_col, &fg_xc, &dummy) == False) {
    error ("%s: can't alloc foreground color '%s'", Name, fg_col);
    return -1;
  }
  
  if (XAllocNamedColor(dp, cm, bg_col, &bg_xc, &dummy)==False) {
    error ("%s: can't alloc background color '%s'", Name, bg_col);
    return -1;
  }
  
  if (XAllocNamedColor(dp, cm, hg_col, &hg_xc, &dummy)==False) {
    error ("%s: can't alloc halfground color '%s'", Name, hg_col);
    return -1;
  }
  
  dimx = DCOLS*pixel + (DCOLS-1)*pgap + (DCOLS/XRES-1)*cgap;
  dimy = DROWS*pixel + (DROWS-1)*pgap + (DROWS/YRES-1)*rgap;

  wa.event_mask=ExposureMask;

  w = XCreateWindow(dp, rw, 0, 0, dimx+2*border, dimy+2*border, 0, 0, InputOutput, vi, CWEventMask, &wa);

  pm = XCreatePixmap(dp, w, dimx, dimy, dd);

  sh.min_width  = sh.max_width  = dimx+2*border;
  sh.min_height = sh.max_height = dimy+2*border;
  sh.flags = PPosition|PSize|PMinSize|PMaxSize;
  
  XSetWMProperties(dp, w, NULL, NULL, NULL, 0, &sh, NULL, NULL);


  XSetForeground(dp, fg_gc, fg_xc.pixel);
  XSetBackground(dp, fg_gc, bg_xc.pixel);

  bg_gc = XCreateGC(dp, w, 0, NULL);
  XSetForeground(dp, bg_gc, bg_xc.pixel);
  XSetBackground(dp, bg_gc, fg_xc.pixel);

  hg_gc = XCreateGC(dp, w, 0, NULL);
  XSetForeground(dp, hg_gc, hg_xc.pixel);
  XSetBackground(dp, hg_gc, fg_xc.pixel);

  XFillRectangle(dp, pm, bg_gc, 0, 0, dimx+2*border, dimy+2*border);
  XSetWindowBackground(dp, w, bg_xc.pixel);
  XClearWindow(dp, w);

  XStoreName(dp, w, "LCD4Linux");
  XMapWindow(dp, w);

  XFlush(dp);

  while(1) {
    XNextEvent(dp,&ev);
    if (ev.type==Expose && ev.xexpose.count==0)
      break;
  }
  
  // regularly process X events
  // Fixme: make 20msec configurable
  timer_add (drv_X11_timer, NULL, 20, 0);

  return 0;
}



// ****************************************
// ***            plugins               ***
// ****************************************

// none at the moment...


// ****************************************
// ***        widget callbacks          ***
// ****************************************


// using drv_generic_graphic_draw(W)
// using drv_generic_graphic_icon_draw(W)
// using drv_generic_graphic_bar_draw(W)


// ****************************************
// ***        exported functions        ***
// ****************************************


// list models
int drv_X11_list (void)
{
  printf ("any");
  return 0;
}


// initialize driver & display
int drv_X11_init (char *section)
{
  WIDGET_CLASS wc;
  int ret;  
  
  // real worker functions
  drv_generic_graphic_real_blit   = drv_X11_blit;
  
  // start display
  if ((ret=drv_X11_start (section))!=0)
    return ret;
  
  // initialize generic graphic driver
  if ((ret=drv_generic_graphic_init(section, Name))!=0)
    return ret;
  
  // initially expose window
  drv_X11_expose (0, 0, dimx+2*border, dimy+2*border);
  
  // register text widget
  wc=Widget_Text;
  wc.draw=drv_generic_graphic_draw;
  widget_register(&wc);
  
  // register icon widget
  wc=Widget_Icon;
  wc.draw=drv_generic_graphic_icon_draw;
  widget_register(&wc);
  
  // register bar widget
  wc=Widget_Bar;
  wc.draw=drv_generic_graphic_bar_draw;
  widget_register(&wc);
  
  // register plugins
  // none at the moment...
  
  
  return 0;
}


// close driver & display
int drv_X11_quit (void) {

  info("%s: shutting down.", Name);
  drv_generic_graphic_quit();
  
  if (drv_X11_FB) {
    free (drv_X11_FB);
    drv_X11_FB=NULL;
  }
  
  return (0);
}


DRIVER drv_X11 = {
  name: Name,
  list: drv_X11_list,
  init: drv_X11_init,
  quit: drv_X11_quit, 
};