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/*
g3data : A program for grabbing data from scanned graphs
Copyright (C) 2000 Jonas Frantz
This file is part of g3data.
g3data 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 of the License, or
(at your option) any later version.
g3data 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Authors email : jonas.frantz@welho.com
*/
#include <stdlib.h>
#include <gtk/gtk.h>
#include "main.h"
/****************************************************************/
/* This function draws the X-axis, Y-axis or point marker on */
/* the drawing_area depending on the value of the type */
/* parameter. */
/****************************************************************/
void DrawMarker(GtkWidget *da, gint x, gint y, gint type, GdkColor *color)
{
GdkGC *bpegc;
bpegc = gdk_gc_new (da->window);
if (type==0) {
gdk_gc_set_foreground (bpegc, &color[0]);
gdk_draw_rectangle(da->window,bpegc,TRUE,
x-MARKERLENGTH,y-MARKERTHICKNESS/2,MARKERLENGTH*2+1,MARKERTHICKNESS+1);
gdk_draw_rectangle(da->window,bpegc,TRUE,
x-MARKERTHICKNESS/2,y-MARKERLENGTH,MARKERTHICKNESS+1,MARKERLENGTH+1);
} else if (type==1) {
gdk_gc_set_foreground (bpegc, &color[1]);
gdk_draw_rectangle(da->window,bpegc,TRUE,
x-MARKERTHICKNESS/2,y-MARKERLENGTH,MARKERTHICKNESS+1,MARKERLENGTH*2+1);
gdk_draw_rectangle(da->window,bpegc,TRUE,
x,y-MARKERTHICKNESS/2,MARKERLENGTH+1,MARKERTHICKNESS+1);
} else {
gdk_gc_set_foreground (bpegc, &color[2]);
gdk_draw_rectangle(da->window,bpegc,TRUE,
x-OUTERSIZE,y-OUTERSIZE,OUTERSIZE*2+1,OUTERSIZE*2+1);
gdk_gc_set_foreground (bpegc, &color[3]);
gdk_draw_rectangle(da->window,bpegc,TRUE,
x-INNERSIZE,y-INNERSIZE,INNERSIZE*2+1,INNERSIZE*2+1);
}
g_object_unref(bpegc);
}
/****************************************************************/
/* This function initializes the colors which are used when */
/* drawing the axispoints and the graph points */
/****************************************************************/
gboolean setcolors(GdkColor **color)
{
gboolean *success;
gint i, ncolors;
gushort xcolor[19][4] = {{40000,20000,48000}, /* x axis marker color */
{40000,48000,20000}, /* y axis marker color */
{65535,00000,00000}, /* outer square color */
{65535,65535,65535}}; /* inner square color */
ncolors=4; /* Number of colors to be initialized */
*color = (GdkColor *) calloc (ncolors, sizeof(GdkColor)); /* Allocate memory for the colors */
success = (gboolean *) calloc (ncolors, sizeof(gboolean));
for(i=0;i<ncolors;i++) { /* Transfer colorindexes into colors array */
(*color)[i].red = xcolor[i][0];
(*color)[i].green = xcolor[i][1];
(*color)[i].blue = xcolor[i][2];
}
/* Allocate the colors */
gdk_colormap_alloc_colors(gdk_colormap_get_system(),*color, ncolors, FALSE, FALSE, success);
free(success);
return TRUE;
}
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