LXDE Forums


https://forum.lxde.org/

Configure panel plugins

https://forum.lxde.org/viewtopic.php?t=49

Page 1 of 1

Configure panel plugins

Posted: Mon Oct 13, 2008 9:41 pm
by kinu
Hi all,

I'm trying to figure how to change colours, wide and so on for the panel plugins (I'm focused on cpu plugin by now).

Is there an easy way?

Oh, I'm running linux mint + lxde, and it works ok. And very fast, I must say.

Thank you in advance.

Re: Configure panel plugins

Posted: Tue Oct 14, 2008 8:54 am
by delirium
Not in the current version! :?
But well have a look at the source and see what you can do!
The plugin is very simple and easily to understand and custimizing it for your needs shouldnt be a big deal.
If you are not capable of fixing the code yourself just drop me a line of your needs and i will se what i can do.

Re: Configure panel plugins

Posted: Tue Oct 14, 2008 11:34 am
by kinu
Thank you for your quick answer.

It Is just an aesthetics preference.

I'm using precompiled packages on an apt repository. I'm not a programmer (well, long long ago maybe...but not now), so please forgive me for all the crap I'm going to write right now.

I see you (I think you are a developer?) are using things like gdk_gc_set_foreground(c->gc_cpu, c->ccpu); that I can figure sets something in some structure, but I dont know how to manage this, so here I go;

I would like some kind of parameter like BGColor and FGColor. Maybe you can do something like in dclock:

Change and add

Code: Select all

char *ccpu;
char *bgcpu;
to the cpu_t definition. I don´t know about gtk, just a place for store the background color.

Then

Code: Select all

 if( fp )
    {
        while (lxpanel_get_line(fp, &s) != LINE_BLOCK_END) {
            if (s.type == LINE_NONE) {
                ERR( "cpu_t: illegal token %s\n", s.str);
                goto error;
            }
            if (s.type == LINE_VAR) {
                if (!g_ascii_strcasecmp(s.t[0], "BGColor"))
                    c->bgcpu = g_strdup(s.t[1]);
                else if (!g_ascii_strcasecmp(s.t[0], "FGColor"))
                    c->ccpu= g_strdup(s.t[1]);
               else {
                    ERR( "cpu_t: unknown var %s\n", s.t[0]);
                    goto error;
                }
            } else {
                ERR( "cpu_t: illegal in this context %s\n", s.str);
                goto error;
            }
        }
    }
And then something like:

Code: Select all

static void cpu_config( Plugin *p, GtkWindow* parent )
{
    GtkWidget* dlg;
    cpu_t *c = (cpu_t *)p->priv;
    dlg = create_generic_config_dlg( _(p->class->name),
                                     GTK_WIDGET(parent),
                                    (GSourceFunc) apply_config, (gpointer) p,
                                     _("Background Color"), &c->ccpu, G_TYPE_STRING,
                                     _("Foreground Color"), &c->bgcpu, G_TYPE_STRING,
                                     NULL );
    gtk_window_present( GTK_WINDOW(dlg) );
}

static void save_config( Plugin* p, FILE* fp )
{
    cpu_t *c = (cpu_t *)p->priv;
    lxpanel_put_str( fp, "BGColor", c->bgcpu );
    lxpanel_put_str( fp, "FGColor", c->ccpu );
}
Then you can use these parameters at cpu_update. This is not efficient, and I know you are using some kind of gtk predefined struct, and obscure (for me) c pointers and all the magic, but you know, I'm not a programmer

Code: Select all

.
.
.
GdkColor *cpufg;
GdkColor *cpubg;
.
.
gdk_color_parse(c->bgcpu, cpubg);
gdk_color_parse(c->ccpu, cpufg);.
.
gdk_draw_rectangle(c->pixmap,  [i] cpubg[/i] , TRUE, 0, 0, c->Wwg, c->Hwg);
.
.
           gdk_draw_line(c->pixmap,[i]cpufg[/i], i, c->Hwg, i, c->Hwg - val);
.
.
.
Ufff. I think my brain will explode soon....;-)

If you like the idea, maybe you can do it the right way, and then do it for a future version.

Thanks to the team for this amazing fast and useful DE.

Best regards,

Miguel

Re: Configure panel plugins

Posted: Tue Oct 14, 2008 12:59 pm
by delirium
this one should do the job!

cpu.c

Code: Select all

/*
 * CPU usage plugin to lxpanel
 *
 * Copyright (C) 2004 by Alexandre Pereira da Silva <alexandre.pereira@poli.usp.br>
 *
 * This program 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.
 *
 * This program 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
 *
 */
/*A little bug fixed by Mykola <mykola@2ka.mipt.ru>:) */


#include <string.h>
#include <sys/time.h>
#include <time.h>
#include <sys/sysinfo.h>
#include <stdlib.h>
#include <glib/gi18n.h>

#include "plugin.h"
#include "panel.h"
#include "misc.h"

#define KILOBYTE 1024
#define MAX_WGSIZE 100

#include "dbg.h"
typedef unsigned long tick;

struct cpu_stat {
    tick u, n, s, i;
};


typedef struct {
    GdkGC *gc_cpu;
    GdkGC *fc_cpu;
    
    GdkColor *ccpu,*fcpu;
    GtkWidget *da;
    GtkWidget *evbox;
    GdkPixmap *pixmap;
    /* GtkTooltips *tip; */
	char *front_color,*back_color;
    int timer;
    tick *stats_cpu;
    unsigned int ini_stats;
    int Wwg;
    int Hwg;
    struct cpu_stat cpu_anterior;
} cpu_t;


static int
cpu_update(cpu_t *c)
{
    int cpu_u=0, cpu_s=0, cpu_n=0, cpu_i=100;
    unsigned int i;
    struct cpu_stat cpu, cpu_r;
    FILE *stat;
    float total;

    ENTER;
    if(!c->pixmap)
        RET(TRUE);

    stat = fopen("/proc/stat", "r");
    if(!stat)
        RET(TRUE);
    fscanf(stat, "cpu %lu %lu %lu %lu", &cpu.u, &cpu.n, &cpu.s, &cpu.i);
    fclose(stat);

    cpu_r.u = cpu.u - c->cpu_anterior.u;
    cpu_r.n = cpu.n - c->cpu_anterior.n;
    cpu_r.s = cpu.s - c->cpu_anterior.s;
    cpu_r.i = cpu.i - c->cpu_anterior.i;

    total = cpu_r.u + cpu_r.n + cpu_r.s + cpu_r.i;
    cpu_u = cpu_r.u * c->Hwg / total;
    cpu_s = cpu_r.n * c->Hwg / total;
    cpu_n = cpu_r.s * c->Hwg / total;
    cpu_i = cpu_r.i * c->Hwg / total;

    c->cpu_anterior = cpu;

    c->stats_cpu[c->ini_stats++] = cpu_u + cpu_s + cpu_n;
    c->ini_stats %= c->Wwg;
//c->da->style->black_gc
    gdk_draw_rectangle(c->pixmap, c->fc_cpu , TRUE, 0, 0, c->Wwg, c->Hwg);
    for (i = 0; i < c->Wwg; i++) {
    int val;

    val = c->stats_cpu[(i + c->ini_stats) % c->Wwg];
        if (val)
            gdk_draw_line(c->pixmap, c->gc_cpu, i, c->Hwg, i, c->Hwg - val);
    }
    gtk_widget_queue_draw(c->da);
    RET(TRUE);
}

static gint
configure_event(GtkWidget *widget, GdkEventConfigure *event, cpu_t *c)
{
    ENTER;
    if (c->pixmap)
        g_object_unref(c->pixmap);
    c->Wwg = widget->allocation.width;
    c->Hwg = widget->allocation.height;
    if (c->stats_cpu)
        g_free(c->stats_cpu);
    c->stats_cpu = g_new0( typeof(*c->stats_cpu), c->Wwg);
    c->pixmap = gdk_pixmap_new (widget->window,
          widget->allocation.width,
          widget->allocation.height,
          -1);
    gdk_draw_rectangle (c->pixmap,
          c->fc_cpu,
          TRUE,
          0, 0,
          widget->allocation.width,
          widget->allocation.height);

   RET(TRUE);
}


static gint
expose_event(GtkWidget *widget, GdkEventExpose *event, cpu_t *c)
{
    ENTER;
    gdk_draw_drawable (widget->window,
          c->fc_cpu,
          c->pixmap,
          event->area.x, event->area.y,
          event->area.x, event->area.y,
          event->area.width, event->area.height);

    RET(FALSE);
}

static gboolean  on_button_press(GtkWidget* w, GdkEventButton* evt, Plugin* plugin)
{
    if( evt->button == 3 )  /* right button */
    {
        GtkMenu* popup = lxpanel_get_panel_menu( plugin->panel, plugin, FALSE );
        gtk_menu_popup( popup, NULL, NULL, NULL, NULL, evt->button, evt->time );
        return TRUE;
    }
    return FALSE;
}

static int
cpu_constructor(Plugin *p, char **fp)
{
    cpu_t *c;

    ENTER;
    c = g_new0(cpu_t, 1);
    p->priv = c;

    p->pwid = gtk_event_box_new();
    GTK_WIDGET_SET_FLAGS( p->pwid, GTK_NO_WINDOW );

    c->da = gtk_drawing_area_new();
    gtk_widget_set_size_request(c->da, 40, 20);
    gtk_widget_add_events( c->da, GDK_BUTTON_PRESS_MASK );

    gtk_widget_show(c->da);

    c->gc_cpu = gdk_gc_new(p->panel->topgwin->window);
    c->fc_cpu = gdk_gc_new(p->panel->topgwin->window);
    
    c->ccpu = (GdkColor *)malloc(sizeof(GdkColor));
    c->fcpu = (GdkColor *)malloc(sizeof(GdkColor));
    
    //---
    line s;
    s.len = 256;
    
    if( fp )
    {
        while (lxpanel_get_line(fp, &s) != LINE_BLOCK_END) {
            if (s.type == LINE_NONE) {
                ERR( "cpu: illegal token %s\n", s.str);
               
            }
            if (s.type == LINE_VAR) {
                if (!g_ascii_strcasecmp(s.t[0], "FrontColor"))
				{
                    c->front_color = g_strdup(s.t[1]);
                    
                }else if (!g_ascii_strcasecmp(s.t[0], "BackColor")){
                	  c->back_color = g_strdup(s.t[1]);
                	  
                	}else{
                    ERR( "cpu: unknown var %s\n", s.t[0]);
                 
                }
            } else {
                ERR( "cpu: illegal in this context %s\n", s.str);
             
            }
        }
    }
//---
    //selecting color
    gdk_color_parse(c->front_color,  c->ccpu);
    gdk_color_parse(c->back_color,  c->fcpu);
    gdk_colormap_alloc_color(gdk_drawable_get_colormap(p->panel->topgwin->window),  c->ccpu, FALSE, TRUE);
    gdk_colormap_alloc_color(gdk_drawable_get_colormap(p->panel->topgwin->window),  c->fcpu, FALSE, TRUE);
    gdk_gc_set_foreground(c->gc_cpu,  c->ccpu);
	gdk_gc_set_foreground(c->fc_cpu,  c->fcpu);

    gtk_container_add(GTK_CONTAINER(p->pwid), c->da);
    gtk_container_set_border_width (GTK_CONTAINER (p->pwid), 1);

    g_signal_connect (G_OBJECT (c->da),"configure_event",
          G_CALLBACK (configure_event), (gpointer) c);
    g_signal_connect (G_OBJECT (c->da), "expose_event",
          G_CALLBACK (expose_event), (gpointer) c);
    g_signal_connect( c->da, "button-press-event",
          G_CALLBACK(on_button_press), p );

    c->timer = g_timeout_add(1000, (GSourceFunc) cpu_update, (gpointer) c);
    RET(1);
}

static void
cpu_destructor(Plugin *p)
{
    cpu_t *c = (cpu_t *) p->priv;

    ENTER;
    g_object_unref(c->pixmap);
    g_object_unref(c->gc_cpu);
    g_free(c->stats_cpu);
    g_free(c->ccpu);
    g_source_remove(c->timer);
    /* g_object_unref( c->tip ); */
    g_free(p->priv);
    RET();
}

static void apply_config( Plugin* p )
{
	cpu_t *c = (cpu_t *) p->priv;
	
    //selecting color
    if(gdk_color_parse(c->front_color,  c->ccpu) && gdk_color_parse(c->back_color,  c->fcpu))
    {
    	gdk_colormap_alloc_color(gdk_drawable_get_colormap(p->panel->topgwin->window),  c->ccpu, FALSE, TRUE);
    	gdk_colormap_alloc_color(gdk_drawable_get_colormap(p->panel->topgwin->window),  c->fcpu, FALSE, TRUE);
    	gdk_gc_set_foreground(c->gc_cpu,  c->ccpu);	
    	gdk_gc_set_foreground(c->fc_cpu,  c->fcpu);
    }		
}

static void cpu_config( Plugin *p, GtkWindow* parent )
{
    GtkWidget* dlg;
    cpu_t *dc = (cpu_t *)p->priv;
    dlg = create_generic_config_dlg( _(p->class->name),
                                     GTK_WIDGET(parent),
                                    (GSourceFunc) apply_config, (gpointer) p,
                                     _("Graphcolor "), &dc->front_color , G_TYPE_STRING,
                                     _("Background"), &dc->back_color , G_TYPE_STRING,
                                     NULL );
    gtk_window_present( GTK_WINDOW(dlg) );
}

static void save_config( Plugin* p, FILE* fp )
{
    cpu_t *dc = (cpu_t *)p->priv;
    
    lxpanel_put_str( fp, "FrontColor", dc->front_color );
    lxpanel_put_str( fp, "BackColor", dc->back_color );
}

PluginClass cpu_plugin_class = {
    fname: NULL,
    count: 0,

    type : "cpu",
    name : N_("CPU Usage Monitor"),
    version: "1.1",
    description : N_("Display CPU usage"),

    constructor : cpu_constructor,
    destructor  : cpu_destructor,
    config : cpu_config,
    save : save_config
};
english colornames are accepted.....

Re: Configure panel plugins

Posted: Tue Oct 14, 2008 3:08 pm
by kinu
Thank you again !
All times are UTC
Page 1 of 1

Powered by phpBB® Forum Software © phpBB Limited