colorbar.c

seismic software,very useful

/*
colorbar object
*/
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#ifdef XAW
#include <X11/Xutil.h>
#include <X11/Intrinsic.h>
#include <X11/StringDefs.h>
#endif
#ifdef XVIEW
#include <xview/xview.h>
#include <xview/canvas.h>
#include <xview/panel.h>
#endif
#include "main.h"
#include "axis.h"
#include "data.h"
#include "map.h"
#include "render.h"
#include "view.h"
#ifdef XAW
#include "xaw.h"
#endif
#ifdef XVIEW
#include "xv.h"
#endif
#include "color.h"
#include "draw.h"
#include "colorbar.h"
#include <stdio.h>

Colorbar colorbar;

/* initialize colorbar */
ColorbarInit ()
	{
	NEW (Colorbar,colorbar,1);
	colorbar->low[BOTTOM_MARK] = NO_INDEX;
	colorbar->high[BOTTOM_MARK] = NO_INDEX;
	colorbar->low[TOP_MARK] = NO_INDEX;
	colorbar->high[TOP_MARK] = NO_INDEX;
	colorbar->buffer = 0;
	colorbar->image = 0;
	}

/* draw horizontal colorbar */
ColorbarDraw ()
	{
	int i, wide, hite, color;
	int x1, y1, x2, y2;
	register byte bp, be;
	string label;
	extern View view;
	extern Draw draw;

	if (!colorbar) return;
#ifdef XVIEW
	if (UIFirst()) return;
#endif
	UIColorbarSize (&wide,&hite);
	MapSetSize (view->map[AXIS_COLOR],wide);
	FREE (colorbar->buffer);
	NEW (byte,colorbar->buffer,wide*hite);
	for (i=0, bp=colorbar->buffer; i<wide; i++) {
		*bp++ = ((((ColorSize()) * i) / (wide - 1)) / 2) *2 + ColorBase();
		}
	for (be=colorbar->buffer+wide*hite; bp<be; bp++) {
		*bp = *(bp-wide);
		}
	DrawWindow (UIColorbarWindow());
	DrawClear ();
	colorbar->image = (XImage*)XCreateImage (draw->display,draw->visual,8,
		ZPixmap,0,(char*)colorbar->buffer,wide,hite,16,wide);
	DrawMask (IMAGE_MASK);
	XPutImage (draw->display,UIColorbarWindow(),draw->gc,colorbar->image,
		0,0,0,0,wide,hite);
	ColorbarOverlay ();
	}

/* draw colorbar overlays: labels, hitogram and pick bars */
ColorbarOverlay ()
	{
	int wide, hite, i, x1, y1, x2, y2;
	float tic;
	string label;
	extern Data data;
	extern View view;

	if (!colorbar) return;
	/* draw into colorbar */
	DrawWindow (UIColorbarWindow());
	/* clear */
	UIColorbarSize (&wide,&hite);
	DrawSheet (0,0,wide,hite,ERASE);
	DrawColor (OVERLAY_COLOR);
	/* tics */
	for (tic=MapTic0(view->map[AXIS_COLOR]);
		tic<MapTic2(view->map[AXIS_COLOR])+.5*MapDtic(view->map[AXIS_COLOR]); 
		tic+=MapDtic(view->map[AXIS_COLOR])) {
		x1 = MapIndex (view->map[AXIS_COLOR],tic);
		y1 = 0;
/*
		fprintf (stderr,"%s %s %g \n",label,MapFormat(view->map[AXIS_COLOR]),tic);
*/
		sprintf (label,MapFormat(view->map[AXIS_COLOR]),tic);
		if (x1 < 25) {
			DrawText (x1,y1+TIC_LENGTH,TEXT_V0|TEXT_H0,label);
			}
		else if (x1 > wide-25) {
			DrawText (x1,y1+TIC_LENGTH,TEXT_V0|TEXT_H100,label);
			}
		else	{
			DrawText (x1,y1+TIC_LENGTH,TEXT_V0|TEXT_H50,label);
			}
		DrawLine (x1,y1,x1,y1+TIC_LENGTH,DRAW);
		}

	/* histogram */
	x1 = 0;
	y1 = hite - (hite * DataHistogram(ColorBase())) / 100;
	for (i=0; i<ColorSize(); i++) {
		x2 = (i * (wide-1)) / ColorSize();
/*		y2 = (i * (DataValueSize (data) + DataValueBase(data))) / ColorSize();*/
		y2 = (i * DataValueSize (data)) / ColorSize() + DataValueBase(data);
		y2 = hite - (hite * DataHistogram(i)) / 100 - 1;
		DrawLine (x1,y1,x2,y2,DRAW);
		x1 = x2;
		y1 = y2;
		}

	/* top pick bar */
	if (colorbar->low[TOP_MARK] > NO_INDEX) {
		DrawSheet ((colorbar->low[TOP_MARK]*wide)/DataValueSize (data),0,
			(colorbar->high[BOTTOM_MARK]*wide)/DataValueSize (data),hite/3,DRAW);
		}
	/* bottom pick bar */
	if (colorbar->low[BOTTOM_MARK] > NO_INDEX) {
		x1 = (colorbar->low[BOTTOM_MARK] * wide) / DataValueSize (data);
		x2 = wide / (2 * DataValueSize (data));
		DrawSheet (x1-x2,hite/2,x1+x2,hite,DRAW);
		if (colorbar->low[BOTTOM_MARK] != colorbar->high[BOTTOM_MARK]) {
			x2 = (colorbar->high[BOTTOM_MARK] * wide) / DataValueSize (data);
			DrawSheet (x1,(2*hite)/3,x2,hite,DRAW);
			}
		}
	DrawWindow (UICanvasWindow());
	/* reset draw widnow to canvas */
	}

/* set colorbar mark */
ColorbarSetMark (low,high,index)
int low, high, index;
	{
	if (!colorbar) return;
	colorbar->low[index] = low;
	colorbar->high[index] = high;
	ColorbarOverlay();
	}

/* return colorbar marks */
ColorbarMark (low,high,index)
int *low, *high, index;
	{
	*low = NO_INDEX;
	*high = NO_INDEX;
	if (!colorbar || index < 0 || index > 2) return;
	*low = colorbar->low[index];
	*high = colorbar->high[index];
	}