332 lines
9.9 KiB
C
332 lines
9.9 KiB
C
/*
|
|
* GTK plotting routines source file
|
|
*
|
|
* Copyright (c) 1999 Mark Taylor
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
/* $Id: gpkplotting.c,v 1.12 2011/05/07 16:05:17 rbrito Exp $ */
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif
|
|
|
|
#include "gpkplotting.h"
|
|
|
|
#ifdef STDC_HEADERS
|
|
# include <string.h>
|
|
#else
|
|
# ifndef HAVE_STRCHR
|
|
# define strchr index
|
|
# define strrchr rindex
|
|
# endif
|
|
char *strchr(), *strrchr();
|
|
# ifndef HAVE_MEMCPY
|
|
# define memcpy(d, s, n) bcopy ((s), (d), (n))
|
|
# define memmove(d, s, n) bcopy ((s), (d), (n))
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef WITH_DMALLOC
|
|
#include <dmalloc.h>
|
|
#endif
|
|
|
|
static gint num_plotwindows = 0;
|
|
static gint max_plotwindows = 10;
|
|
static GdkPixmap *pixmaps[10];
|
|
static GtkWidget *pixmapboxes[10];
|
|
|
|
|
|
|
|
|
|
/* compute a gdkcolor */
|
|
void
|
|
setcolor(GtkWidget * widget, GdkColor * color, gint red, gint green, gint blue)
|
|
{
|
|
|
|
/* colors in GdkColor are taken from 0 to 65535, not 0 to 255. */
|
|
color->red = red * (65535 / 255);
|
|
color->green = green * (65535 / 255);
|
|
color->blue = blue * (65535 / 255);
|
|
color->pixel = (gulong) (color->red * 65536 + color->green * 256 + color->blue);
|
|
/* find closest in colormap, if needed */
|
|
gdk_color_alloc(gtk_widget_get_colormap(widget), color);
|
|
}
|
|
|
|
|
|
void
|
|
gpk_redraw(GdkPixmap * pixmap, GtkWidget * pixmapbox)
|
|
{
|
|
/* redraw the entire pixmap */
|
|
gdk_draw_pixmap(pixmapbox->window,
|
|
pixmapbox->style->fg_gc[GTK_WIDGET_STATE(pixmapbox)],
|
|
pixmap, 0, 0, 0, 0, pixmapbox->allocation.width, pixmapbox->allocation.height);
|
|
}
|
|
|
|
|
|
static GdkPixmap **
|
|
findpixmap(GtkWidget * widget)
|
|
{
|
|
int i;
|
|
for (i = 0; i < num_plotwindows && widget != pixmapboxes[i]; i++);
|
|
if (i >= num_plotwindows) {
|
|
g_print("findpixmap(): bad argument widget \n");
|
|
return NULL;
|
|
}
|
|
return &pixmaps[i];
|
|
}
|
|
|
|
void
|
|
gpk_graph_draw(GtkWidget * widget, /* plot on this widged */
|
|
int n, /* number of data points */
|
|
gdouble * xcord, gdouble * ycord, /* data */
|
|
gdouble xmn, gdouble ymn, /* coordinates of corners */
|
|
gdouble xmx, gdouble ymx, int clear, /* clear old plot first */
|
|
char *title, /* add a title (only if clear=1) */
|
|
GdkColor * color)
|
|
{
|
|
GdkPixmap **ppixmap;
|
|
GdkPoint *points;
|
|
int i;
|
|
gint16 width, height;
|
|
GdkFont *fixed_font;
|
|
GdkGC *gc;
|
|
|
|
gc = gdk_gc_new(widget->window);
|
|
gdk_gc_set_foreground(gc, color);
|
|
|
|
|
|
|
|
if ((ppixmap = findpixmap(widget))) {
|
|
width = widget->allocation.width;
|
|
height = widget->allocation.height;
|
|
|
|
|
|
if (clear) {
|
|
/* white background */
|
|
gdk_draw_rectangle(*ppixmap, widget->style->white_gc, TRUE, 0, 0, width, height);
|
|
/* title */
|
|
#ifdef _WIN32
|
|
fixed_font = gdk_font_load("-misc-fixed-large-r-*-*-*-100-*-*-*-*-*-*");
|
|
#else
|
|
fixed_font = gdk_font_load("-misc-fixed-medium-r-*-*-*-100-*-*-*-*-iso8859-1");
|
|
#endif
|
|
|
|
gdk_draw_text(*ppixmap, fixed_font,
|
|
widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
|
|
0, 10, title, strlen(title));
|
|
}
|
|
|
|
|
|
points = g_malloc(n * sizeof(GdkPoint));
|
|
for (i = 0; i < n; i++) {
|
|
points[i].x = .5 + ((xcord[i] - xmn) * (width - 1) / (xmx - xmn));
|
|
points[i].y = .5 + ((ycord[i] - ymx) * (height - 1) / (ymn - ymx));
|
|
}
|
|
gdk_draw_lines(*ppixmap, gc, points, n);
|
|
g_free(points);
|
|
gpk_redraw(*ppixmap, widget);
|
|
}
|
|
gdk_gc_destroy(gc);
|
|
}
|
|
|
|
|
|
|
|
void
|
|
gpk_rectangle_draw(GtkWidget * widget, /* plot on this widged */
|
|
gdouble * xcord, gdouble * ycord, /* corners */
|
|
gdouble xmn, gdouble ymn, /* coordinates of corners */
|
|
gdouble xmx, gdouble ymx, GdkColor * color)
|
|
{
|
|
GdkPixmap **ppixmap;
|
|
GdkPoint points[2];
|
|
int i;
|
|
gint16 width, height;
|
|
GdkGC *gc;
|
|
|
|
|
|
gc = gdk_gc_new(widget->window);
|
|
gdk_gc_set_foreground(gc, color);
|
|
|
|
|
|
if ((ppixmap = findpixmap(widget))) {
|
|
width = widget->allocation.width;
|
|
height = widget->allocation.height;
|
|
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
points[i].x = .5 + ((xcord[i] - xmn) * (width - 1) / (xmx - xmn));
|
|
points[i].y = .5 + ((ycord[i] - ymx) * (height - 1) / (ymn - ymx));
|
|
}
|
|
width = points[1].x - points[0].x + 1;
|
|
height = points[1].y - points[0].y + 1;
|
|
gdk_draw_rectangle(*ppixmap, gc, TRUE, points[0].x, points[0].y, width, height);
|
|
gpk_redraw(*ppixmap, widget);
|
|
}
|
|
gdk_gc_destroy(gc);
|
|
}
|
|
|
|
|
|
|
|
void
|
|
gpk_bargraph_draw(GtkWidget * widget, /* plot on this widged */
|
|
int n, /* number of data points */
|
|
gdouble * xcord, gdouble * ycord, /* data */
|
|
gdouble xmn, gdouble ymn, /* coordinates of corners */
|
|
gdouble xmx, gdouble ymx, int clear, /* clear old plot first */
|
|
char *title, /* add a title (only if clear=1) */
|
|
int barwidth, /* bar width. 0=compute based on window size */
|
|
GdkColor * color)
|
|
{
|
|
GdkPixmap **ppixmap;
|
|
GdkPoint points[2];
|
|
int i;
|
|
gint16 width, height, x, y, barheight;
|
|
GdkFont *fixed_font;
|
|
GdkGC *gc;
|
|
int titleSplit;
|
|
|
|
|
|
gc = gdk_gc_new(widget->window);
|
|
gdk_gc_set_foreground(gc, color);
|
|
|
|
|
|
if ((ppixmap = findpixmap(widget))) {
|
|
width = widget->allocation.width;
|
|
height = widget->allocation.height;
|
|
|
|
|
|
if (clear) {
|
|
/* white background */
|
|
gdk_draw_rectangle(*ppixmap, widget->style->white_gc, TRUE, 0, 0, width, height);
|
|
/* title */
|
|
#ifdef _WIN32
|
|
fixed_font = gdk_font_load("-misc-fixed-large-r-*-*-*-100-*-*-*-*-*-*");
|
|
#else
|
|
fixed_font = gdk_font_load("-misc-fixed-medium-r-*-*-*-100-*-*-*-*-iso8859-1");
|
|
#endif
|
|
|
|
titleSplit = strcspn(title, "\n");
|
|
|
|
if (titleSplit && (titleSplit != strlen(title))) {
|
|
gdk_draw_text(*ppixmap, fixed_font,
|
|
widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
|
|
0, 10, title, titleSplit);
|
|
|
|
gdk_draw_text(*ppixmap, fixed_font,
|
|
widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
|
|
0, 22, title + titleSplit + 1, (strlen(title) - titleSplit) - 1);
|
|
|
|
|
|
}
|
|
else {
|
|
gdk_draw_text(*ppixmap, fixed_font,
|
|
widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
|
|
0, 10, title, strlen(title));
|
|
}
|
|
}
|
|
|
|
|
|
for (i = 0; i < n; i++) {
|
|
points[1].x = .5 + ((xcord[i] - xmn) * (width - 1) / (xmx - xmn));
|
|
points[1].y = .5 + ((ycord[i] - ymx) * (height - 1) / (ymn - ymx));
|
|
points[0].x = points[1].x;
|
|
points[0].y = height - 1;
|
|
|
|
x = .5 + ((xcord[i] - xmn) * (width - 1) / (xmx - xmn));
|
|
y = .5 + ((ycord[i] - ymx) * (height - 1) / (ymn - ymx));
|
|
if (!barwidth)
|
|
barwidth = (width / (n + 1)) - 1;
|
|
barwidth = barwidth > 5 ? 5 : barwidth;
|
|
barwidth = barwidth < 1 ? 1 : barwidth;
|
|
barheight = height - 1 - y;
|
|
/* gdk_draw_lines(*ppixmap,gc,points,2); */
|
|
gdk_draw_rectangle(*ppixmap, gc, TRUE, x, y, barwidth, barheight);
|
|
|
|
}
|
|
gpk_redraw(*ppixmap, widget);
|
|
}
|
|
gdk_gc_destroy(gc);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Create a new backing pixmap of the appropriate size */
|
|
static gint
|
|
configure_event(GtkWidget * widget, GdkEventConfigure * event, gpointer data)
|
|
{
|
|
GdkPixmap **ppixmap;
|
|
if ((ppixmap = findpixmap(widget))) {
|
|
if (*ppixmap)
|
|
gdk_pixmap_unref(*ppixmap);
|
|
*ppixmap = gdk_pixmap_new(widget->window,
|
|
widget->allocation.width, widget->allocation.height, -1);
|
|
gdk_draw_rectangle(*ppixmap,
|
|
widget->style->white_gc,
|
|
TRUE, 0, 0, widget->allocation.width, widget->allocation.height);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
|
|
/* Redraw the screen from the backing pixmap */
|
|
static gint
|
|
expose_event(GtkWidget * widget, GdkEventExpose * event, gpointer data)
|
|
{
|
|
GdkPixmap **ppixmap;
|
|
if ((ppixmap = findpixmap(widget))) {
|
|
gdk_draw_pixmap(widget->window,
|
|
widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
|
|
*ppixmap,
|
|
event->area.x, event->area.y,
|
|
event->area.x, event->area.y, event->area.width, event->area.height);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
GtkWidget *
|
|
gpk_plot_new(int width, int height)
|
|
{
|
|
GtkWidget *pixmapbox;
|
|
|
|
pixmapbox = gtk_drawing_area_new();
|
|
gtk_drawing_area_size(GTK_DRAWING_AREA(pixmapbox), width, height);
|
|
gtk_signal_connect(GTK_OBJECT(pixmapbox), "expose_event", (GtkSignalFunc) expose_event, NULL);
|
|
gtk_signal_connect(GTK_OBJECT(pixmapbox), "configure_event",
|
|
(GtkSignalFunc) configure_event, NULL);
|
|
gtk_widget_set_events(pixmapbox, GDK_EXPOSURE_MASK);
|
|
|
|
if (num_plotwindows < max_plotwindows) {
|
|
pixmapboxes[num_plotwindows] = pixmapbox;
|
|
pixmaps[num_plotwindows] = NULL;
|
|
num_plotwindows++;
|
|
}
|
|
else {
|
|
g_print("gtk_plotarea_new(): exceeded maximum of 10 plotarea windows\n");
|
|
}
|
|
|
|
return pixmapbox;
|
|
}
|