#ifndef lint
static char SccsId[] = "%W% %G%";
#endif
/* Module: grphlbl.c (Color Graph Label)
* Purpose: Initialize or reset color bar and graph
* Subroutine: label_colorbar() returns: void
* Subroutine: label_color_graph() returns: void
* Subroutine: label_gamma() returns: void
* Subroutine: init_graph_text() returns: void
* Extern: normform, minform in WndwDesktop.c
* Extern: cgraph in CgraphCtrl.c (from Cgraph.def)
* Xlib call: XDrawImageString(), XTextExtents(), XTextWidth()
* Copyright: 1989 Smithsonian Astrophysical Observatory
* You may do anything you like with this file except remove
* this copyright. The Smithsonian Astrophysical Observatory
* makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without
* express or implied warranty.
* Modified: {0} Michael VanHilst initial version 22 June 1989
* {n} <who> -- <does what> -- <when>
*/
#include <stdio.h> /* stderr, NULL, etc. */
#include <X11/Xlib.h> /* X window stuff */
#include <X11/Xutil.h> /* X window manager stuff */
#include "hfiles/define.h" /* define MIN, etc. */
#include "hfiles/struct.h" /* declare structure types */
#include "hfiles/extern.h" /* extern main parameter structures */
#include "hfiles/cgraph.h"
extern struct cgraphRec cgraph;
/*
* Subroutine: label_colorbar
* Purpose: Label the maximum color level by that end of the color bar
* Xlib call: XDrawImageString()
*/
void label_colorbar ( )
{
char max[4];
GC gc, set_edit_gc();
if( cgraph.graphlabel.active ) {
gc = set_edit_gc(cgraph.font, cgraph.menu->foreground,
cgraph.menu->background);
XDrawImageString(cgraph.bar.display, cgraph.barlabel.min_ID, gc,
cgraph.barlabel.min_x, cgraph.barlabel.min_y, "0", 1);
if( color.ncolors > 1 )
sprintf(max, "%3d", color.ncolors - 1);
else
sprintf(max, "255");
XDrawImageString(cgraph.bar.display, cgraph.barlabel.max_ID, gc,
cgraph.barlabel.max_x, cgraph.barlabel.max_y, max, 3);
}
}
/*
* Subroutine: label_color_graph
* Purpose: Draw entire graph label
*/
void label_color_graph ( )
{
GC gc, set_edit_gc();
void label_gamma();
if( cgraph.graphlabel.active && graphbox.active ) {
gc = set_edit_gc(cgraph.font, cgraph.menu->foreground,
cgraph.menu->background);
if( cgraph.graphlabel.geq_active )
XDrawImageString(cgraph.graph.display, cgraph.graphlabel.geq_ID, gc,
cgraph.graphlabel.geq_text_x,
cgraph.graphlabel.geq_text_y, "g=", 2);
XDrawImageString(cgraph.graph.display, cgraph.graphlabel.minmax_ID, gc,
cgraph.graphlabel.min_x, cgraph.graphlabel.min_y,
"min", 3);
XDrawImageString(cgraph.graph.display, cgraph.graphlabel.minmax_ID, gc,
cgraph.graphlabel.max_x, cgraph.graphlabel.max_y,
"max", 3);
label_gamma(1, 1, 1);
}
}
/*
* Subroutine: label_gamma
* Purpose: Label color gamma levels
* Xlib call: XDrawImageString()
*/
void label_gamma ( red, green, blue )
int red, green, blue;
{
double gamma;
char string[8];
GC gc, set_edit_gc();
if( cgraph.graphlabel.active && graphbox.active ) {
gc = set_edit_gc(cgraph.font, cgraph.menu->foreground,
cgraph.menu->background);
if( red ) {
gamma = MIN(color.ctable.red.gamma, 9.99);
sprintf(string, "%3.2f", gamma);
XDrawImageString(cgraph.graph.display, cgraph.graphlabel.red_ID, gc,
cgraph.graphlabel.box_x, cgraph.graphlabel.box_y,
string, 4);
}
if( green ) {
if( color.ctable.green.gamma != gamma ) {
gamma = MIN(color.ctable.green.gamma, 9.99);
sprintf(string, "%3.2f", gamma);
}
XDrawImageString(cgraph.graph.display, cgraph.graphlabel.green_ID, gc,
cgraph.graphlabel.box_x, cgraph.graphlabel.box_y,
string, 4);
}
if( blue ) {
if( color.ctable.blue.gamma != gamma ) {
gamma = MIN(color.ctable.blue.gamma, 9.99);
sprintf(string, "%3.2f", gamma);
}
XDrawImageString(cgraph.graph.display, cgraph.graphlabel.blue_ID, gc,
cgraph.graphlabel.box_x, cgraph.graphlabel.box_y,
string, 4);
}
}
}
/*
* Subroutine: init_cgraph_text
* Purpose: Set basic text parameters for color bar and graph labels
* Xlib calls: XTextExtents(), XTextWidth()
* Note: To be called before the color and graph windows are created
*/
void init_cgraph_text ( )
{
int dir, ascent, descent; /* l: character image bitmap extents */
XCharStruct charstruct; /* l: character bitmap pattern extents */
XFontStruct *get_fontstruct();
/* determine if colorbar will be vertical or horizontal */
if( graphbox.hints.height > graphbox.hints.width )
cgraph.vertical = 1;
else
cgraph.vertical = 0;
/* get measurements of string using mini (0) font (check for failure) */
if( (cgraph.fontstruct = get_fontstruct(0)) == NULL ) {
cgraph.graphlabel.active = 0;
return;
}
cgraph.graphlabel.active = 1;
cgraph.font = cgraph.fontstruct->fid;
XTextExtents(cgraph.fontstruct, "2.00", 4,
&dir, &ascent, &descent, &charstruct);
/* define a box which nicely encloses text bitmap for "2.00" */
cgraph.graphlabel.box_x = descent - (charstruct.lbearing);
cgraph.graphlabel.box_width =
descent + descent + (charstruct.rbearing - charstruct.lbearing);
if( charstruct.descent > 1 )
/* character's y position is defined high (above baseline) */
cgraph.graphlabel.box_y = descent + charstruct.ascent - 1;
else
cgraph.graphlabel.box_y = descent + charstruct.ascent;
cgraph.graphlabel.box_height = cgraph.graphlabel.box_y + descent;
cgraph.graphlabel.geq_height = cgraph.graphlabel.box_height;
if( cgraph.vertical ) {
/* all boxes leave one pixel between border and top and bottom of window */
cgraph.graphlabel.geq_y = 1;
cgraph.graphlabel.red_y = 1;
cgraph.graphlabel.green_y = 1;
cgraph.graphlabel.blue_y = 1;
cgraph.graphlabel.height = cgraph.graphlabel.box_height + 4;
/* barlabel area has same height, minimum width */
cgraph.barlabel.height = cgraph.graphlabel.height;
cgraph.barlabel.base_width = 2 + cgraph.graphlabel.box_width -
XTextWidth(cgraph.fontstruct, ".", 1);
cgraph.barlabel.width = cgraph.barlabel.base_width;
cgraph.barlabel.max_y = cgraph.graphlabel.box_y + 2;
cgraph.barlabel.min_y = cgraph.barlabel.max_y;
/* determine placement of "g=" */
cgraph.graphlabel.geq_width = XTextWidth(cgraph.fontstruct, "g=", 2) + 5;
cgraph.graphlabel.geq_text_x = 3;
cgraph.graphlabel.geq_text_y = cgraph.graphlabel.box_y;
/* limits are in x dimension (for labels and the color bar) */
cgraph.graphlabel.three_limit = (3 * cgraph.graphlabel.box_width) + 9 +
cgraph.barlabel.width;
cgraph.graphlabel.four_limit =
cgraph.graphlabel.three_limit + cgraph.graphlabel.geq_width + 4;
/* "min" and "max" y is offset from bottom, "max" is offset from right */
cgraph.graphlabel.minmax_xoff = XTextWidth(cgraph.fontstruct,"max", 3) + 3;
cgraph.graphlabel.minmax_yoff =
cgraph.graphlabel.height - (cgraph.graphlabel.box_y + 1);
cgraph.graphlabel.min_x = 4 - charstruct.lbearing + cgraph.barlabel.width;
/* max_x depends on the graphbox width and must be set later */
/* set window parameters tied to the text size */
graphbox.yzero = cgraph.graphlabel.height + BDRWDTH;
/* set recommended graphbox sizes in structure used do determine size */
graphbox.hints.min_width = cgraph.graphlabel.three_limit;
graphbox.hints.width = cgraph.graphlabel.four_limit;
} else {
/* all boxes leave one pixel between border and sides of subwindow */
cgraph.graphlabel.geq_x = 1;
cgraph.graphlabel.red_x = 1;
cgraph.graphlabel.green_x = 1;
cgraph.graphlabel.blue_x = 1;
cgraph.graphlabel.width = cgraph.graphlabel.box_width + 4;
/* barlabel area has same width, minimum height */
cgraph.barlabel.width = cgraph.graphlabel.width;
cgraph.barlabel.height = cgraph.graphlabel.box_height;
/* determine placement of "g=" */
cgraph.graphlabel.geq_width = cgraph.graphlabel.box_width;
cgraph.graphlabel.geq_text_x =
(cgraph.graphlabel.box_width -
XTextWidth(cgraph.fontstruct, "g=", 2)) / 2;
cgraph.graphlabel.geq_text_y = cgraph.graphlabel.box_y;
/* limits are in y dimension (enough for labels and the color bar) */
cgraph.graphlabel.three_limit = (3 * cgraph.graphlabel.box_height) + 10 +
cgraph.barlabel.height;
cgraph.graphlabel.four_limit = (4 * cgraph.graphlabel.box_height) + 12 +
cgraph.barlabel.height;
/* "min" and "max" x is offset from right, min y is offset from bottom */
cgraph.graphlabel.minmax_xoff =
XTextWidth(cgraph.fontstruct, "max", 3) + 3;
cgraph.graphlabel.minmax_yoff = descent + 3 + cgraph.barlabel.height;
cgraph.graphlabel.max_y = ascent + 2;
/* graphlabel.min_y is dependent on height and must be set later */
/* width is fixed so x's can be determined now */
cgraph.graphlabel.min_x =
cgraph.graphlabel.width - cgraph.graphlabel.minmax_xoff;
cgraph.graphlabel.max_x = cgraph.graphlabel.min_x;
/* 0 and ncolors-1 are placed near side toward colorbar */
cgraph.barlabel.max_x = 4 + charstruct.lbearing;
cgraph.barlabel.min_x =
cgraph.barlabel.width - (XTextWidth(cgraph.fontstruct, "0", 1) + 4);
/* set window parameters tied to the text size */
graphbox.xzero = cgraph.graphlabel.width + BDRWDTH;
graphbox.hints.min_height = cgraph.graphlabel.three_limit;
graphbox.hints.height = cgraph.graphlabel.four_limit;
}
}
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