multiload: Use common subdirs - src, data

1 files changed, 501 insertions, 0 deletions

diff --git a/multiload/src/load-graph.c b/multiload/src/load-graph.c
new file mode 100644
index 00000000..953dc5b2
--- /dev/null
+++ b/multiload/src/load-graph.c
@@ -0,0 +1,501 @@
+#include <config.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <signal.h>
+#include <dirent.h>
+#include <string.h>
+#include <time.h>
+#include <glib.h>
+#include <gdk/gdkx.h>
+#include <gtk/gtk.h>
+#include <gio/gio.h>
+#include <mate-panel-applet.h>
+#include <mate-panel-applet-gsettings.h>
+#include <math.h>
+
+#include "global.h"
+
+/*
+  Shifts data right
+
+  data[i+1] = data[i]
+
+  data[i] are int*, so we just move the pointer, not the data.
+  But moving data loses data[n-1], so we save data[n-1] and reuse
+  it as new data[0]. In fact, we rotate data[].
+
+*/
+
+static void
+shift_right(LoadGraph *g)
+{
+    unsigned i;
+    int* last_data;
+
+    /* data[g->draw_width - 1] becomes data[0] */
+    last_data = g->data[g->draw_width - 1];
+
+    /* data[i+1] = data[i] */
+    for(i = g->draw_width - 1; i != 0; --i)
+        g->data[i] = g->data[i - 1];
+
+    g->data[0] = last_data;
+}
+
+
+/* Redraws the backing pixmap for the load graph and updates the window */
+static void
+load_graph_draw (LoadGraph *g)
+{
+  guint i, j, k;
+  cairo_t *cr;
+  int load;
+  MultiloadApplet *multiload;
+
+  multiload = g->multiload;
+
+  /* we might get called before the configure event so that
+   * g->disp->allocation may not have the correct size
+   * (after the user resized the applet in the prop dialog). */
+
+  if (!g->surface)
+    g->surface = gdk_window_create_similar_surface (gtk_widget_get_window (g->disp),
+                                                    CAIRO_CONTENT_COLOR,
+                                                    g->draw_width, g->draw_height);
+
+  cr = cairo_create (g->surface);
+  cairo_set_line_width (cr, 1.0);
+  cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
+  cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
+
+  /* all graphs except Load and Net go this path */
+  if (g->id != graph_loadavg && g->id != graph_netload2)
+  {
+    for (i = 0; i < g->draw_width; i++)
+      g->pos [i] = g->draw_height - 1;
+
+    for (j = 0; j < g->n; j++)
+    {
+      gdk_cairo_set_source_rgba (cr, &(g->colors [j]));
+
+      for (i = 0; i < g->draw_width; i++)
+      {
+        if (g->data [i][j] != 0)
+        {
+          cairo_move_to (cr, g->draw_width - i - 0.5, g->pos[i] + 0.5);
+          cairo_line_to (cr, g->draw_width - i - 0.5, g->pos[i] - (g->data [i][j] - 0.5));
+        }
+        g->pos [i] -= g->data [i][j];
+      }
+      cairo_stroke (cr);
+    }
+  }
+  /* This is for network graph */
+  else if (g->id == graph_netload2)
+  {
+    guint maxnet = 1;
+    gint segments = 1;
+    gint combined;
+    guint net_threshold;
+
+    for (i = 0; i < g->draw_width; i++)
+    {
+      g->pos [i] = g->draw_height - 1;
+      combined = g->data[i][0] +
+                 g->data[i][1] +
+                 g->data[i][2];
+      if (combined > maxnet)
+        maxnet = combined;
+    }
+    //printf("max = %d ", maxnet);
+    guint level = 0;
+    if (maxnet > multiload->net_threshold3) {
+      net_threshold = multiload->net_threshold3;
+      level = 3;
+    }
+    else
+      if (maxnet > multiload->net_threshold2) {
+        net_threshold = multiload->net_threshold2;
+        level = 2;
+      }
+      else {
+        net_threshold = multiload->net_threshold1;
+        level = 1;
+        if (maxnet < multiload->net_threshold1)
+          level = 0;
+      }
+
+    //printf("level %d maxnet = %d ", level, maxnet);
+    maxnet = maxnet/net_threshold;
+    segments = MAX (maxnet+1,1);
+    float ratio = (float)g->draw_height/net_threshold/segments;
+    //printf("segments %d ratio = %f t1=%ld t2=%ld t3=%ld t=%ld\n", segments, ratio, multiload->net_threshold1, multiload->net_threshold2, multiload->net_threshold3, multiload->net_threshold);
+
+    for (j = 0; j < g->n-1; j++)
+    {
+      gdk_cairo_set_source_rgba (cr, &(g->colors [j]));
+
+      for (i = 0; i < g->draw_width; i++)
+      {
+        cairo_move_to (cr, g->draw_width - i - 0.5, g->pos[i] + 0.5);
+        cairo_line_to (cr, g->draw_width - i - 0.5, g->pos[i] - 0.5 - ((g->data [i][j] * ratio)));
+        g->pos [i] -= ((g->data [i][j] * ratio));
+      }
+      cairo_stroke (cr);
+    }
+
+    for (j = g->n-1; j < g->n; j++)
+    {
+      gdk_cairo_set_source_rgba (cr, &(g->colors [j]));
+      for (i = 0; i < g->draw_width; i++)
+      {
+          cairo_move_to (cr, g->draw_width - i - 0.5, g->pos[i] + 0.5);
+          cairo_line_to (cr, g->draw_width - i - 0.5, 0.5);
+      }
+      cairo_stroke (cr);
+    }
+
+    /* draw grid lines if needed */
+    gdk_cairo_set_source_rgba (cr, &(g->colors [4]));
+    double spacing;
+    for (k = 0; k < segments -1; k++)
+    {
+      spacing = ((double) g->draw_height/segments) * (k+1);
+      cairo_move_to (cr, 0.5, spacing);
+      cairo_line_to (cr, g->draw_width-0.5, spacing);
+    }
+    cairo_stroke (cr);
+    /* draw indicator if needed */
+    if (level > 0)
+    {
+      gdk_cairo_set_source_rgba (cr, &(g->colors [5]));
+      for (k = 0; k< level; k++ )
+        cairo_rectangle(cr, 0.5, (k*2) * g->draw_height/5, 5, g->draw_height/5);
+      cairo_fill(cr);
+    }
+    cairo_stroke (cr);
+  }
+  /* this is Load graph */
+  else
+  {
+    guint maxload = 1;
+    for (i = 0; i < g->draw_width; i++)
+    {
+      g->pos [i] = g->draw_height - 1;
+      /* find maximum value */
+      if (g->data[i][0] > maxload)
+        maxload = g->data[i][0];
+    }
+    load = ceil ((double) (maxload/g->draw_height)) + 1;
+    load = MAX (load,1);
+
+    for (j = 0; j < g->n; j++)
+    {
+      gdk_cairo_set_source_rgba (cr, &(g->colors [j]));
+
+      for (i = 0; i < g->draw_width; i++)
+      {
+        cairo_move_to (cr, g->draw_width - i - 0.5, g->pos[i] + 0.5);
+        if (j == 0)
+        {
+          cairo_line_to (cr, g->draw_width - i - 0.5, g->pos[i] - ((g->data [i][j] - 0.5)/load));
+        }
+        else
+        {
+          cairo_line_to (cr, g->draw_width - i - 0.5, 0.5);
+        }
+        g->pos [i] -= g->data [i][j] / load;
+      }
+      cairo_stroke (cr);
+    }
+
+    /* draw grid lines in Load graph if needed */
+    gdk_cairo_set_source_rgba (cr, &(g->colors [2]));
+
+    double spacing;
+    for (k = 0; k < load - 1; k++)
+    {
+      spacing = ((double) g->draw_height/load) * (k+1);
+      cairo_move_to (cr, 0.5, spacing);
+      cairo_line_to (cr, g->draw_width-0.5, spacing);
+        }
+
+    cairo_stroke (cr);
+  }
+  gtk_widget_queue_draw (g->disp);
+
+  cairo_destroy (cr);
+}
+
+/* Updates the load graph when the timeout expires */
+static gboolean
+load_graph_update (LoadGraph *g)
+{
+    if (g->data == NULL)
+    return TRUE;
+
+    shift_right(g);
+
+    if (g->tooltip_update)
+    multiload_applet_tooltip_update(g);
+
+    g->get_data (g->draw_height, g->data [0], g);
+
+    load_graph_draw (g);
+    return TRUE;
+}
+
+void
+load_graph_unalloc (LoadGraph *g)
+{
+    guint i;
+
+    if (!g->allocated)
+        return;
+
+    for (i = 0; i < g->draw_width; i++)
+    {
+        g_free (g->data [i]);
+    }
+
+    g_free (g->data);
+    g_free (g->pos);
+
+    g->pos = NULL;
+    g->data = NULL;
+
+    g->size = g_settings_get_int(g->multiload->settings, "size");
+    g->size = MAX (g->size, 10);
+
+    if (g->surface) {
+        cairo_surface_destroy (g->surface);
+        g->surface = NULL;
+    }
+
+    g->allocated = FALSE;
+}
+
+static void
+load_graph_alloc (LoadGraph *g)
+{
+    guint i;
+
+    if (g->allocated)
+        return;
+
+    g->data = g_new0 (gint *, g->draw_width);
+    g->pos = g_new0 (guint, g->draw_width);
+
+    g->data_size = sizeof (guint) * g->n;
+
+    for (i = 0; i < g->draw_width; i++) {
+        g->data [i] = g_malloc0 (g->data_size);
+    }
+
+    g->allocated = TRUE;
+}
+
+static gint
+load_graph_configure (GtkWidget *widget, GdkEventConfigure *event,
+                      gpointer data_ptr)
+{
+    GtkAllocation allocation;
+    LoadGraph *c = (LoadGraph *) data_ptr;
+
+    load_graph_unalloc (c);
+
+    gtk_widget_get_allocation (c->disp, &allocation);
+
+    c->draw_width = allocation.width;
+    c->draw_height = allocation.height;
+    c->draw_width = MAX (c->draw_width, 1);
+    c->draw_height = MAX (c->draw_height, 1);
+
+    load_graph_alloc (c);
+
+    if (!c->surface)
+        c->surface = gdk_window_create_similar_surface (gtk_widget_get_window (c->disp),
+                                                        CAIRO_CONTENT_COLOR,
+                                                        c->draw_width, c->draw_height);
+    gtk_widget_queue_draw (widget);
+
+    return TRUE;
+}
+
+static gint
+load_graph_expose (GtkWidget *widget,
+                   cairo_t *cr,
+                   gpointer data_ptr)
+{
+    LoadGraph *g = (LoadGraph *) data_ptr;
+
+    cairo_set_source_surface (cr, g->surface, 0, 0);
+    cairo_paint (cr);
+
+    return FALSE;
+}
+
+static void
+load_graph_destroy (GtkWidget *widget, gpointer data_ptr)
+{
+    LoadGraph *g = (LoadGraph *) data_ptr;
+
+    load_graph_stop (g);
+
+    gtk_widget_destroy(widget);
+}
+
+static gboolean
+load_graph_clicked (GtkWidget *widget, GdkEventButton *event, LoadGraph *load)
+{
+    load->multiload->last_clicked = load->id;
+
+    return FALSE;
+}
+
+static gboolean
+load_graph_enter_cb(GtkWidget *widget, GdkEventCrossing *event, gpointer data)
+{
+    LoadGraph *graph;
+    graph = (LoadGraph *)data;
+
+    graph->tooltip_update = TRUE;
+    multiload_applet_tooltip_update(graph);
+
+    return TRUE;
+}
+
+static gboolean
+load_graph_leave_cb(GtkWidget *widget, GdkEventCrossing *event, gpointer data)
+{
+    LoadGraph *graph;
+    graph = (LoadGraph *)data;
+
+    graph->tooltip_update = FALSE;
+
+    return TRUE;
+}
+
+static void
+load_graph_load_config (LoadGraph *g)
+{
+    gchar *name, *temp;
+    guint i;
+
+    if (!g->colors)
+        g->colors = g_new0(GdkRGBA, g->n);
+
+    for (i = 0; i < g->n; i++)
+    {
+        name = g_strdup_printf ("%s-color%u", g->name, i);
+        temp = g_settings_get_string(g->multiload->settings, name);
+        if (!temp)
+            temp = g_strdup ("#000000");
+        gdk_rgba_parse(&(g->colors[i]), temp);
+        g_free(temp);
+        g_free(name);
+    }
+}
+
+LoadGraph *
+load_graph_new (MultiloadApplet *ma, guint n, const gchar *label,
+                guint id, guint speed, guint size, gboolean visible,
+                const gchar *name, LoadGraphDataFunc get_data)
+{
+    LoadGraph *g;
+    MatePanelAppletOrient orient;
+
+    g = g_new0 (LoadGraph, 1);
+    g->visible = visible;
+    g->name = name;
+    g->n = n;
+    g->id = id;
+    g->speed  = MAX (speed, 50);
+    g->size   = MAX (size, 10);
+    g->pixel_size = mate_panel_applet_get_size (ma->applet);
+    g->tooltip_update = FALSE;
+    g->multiload = ma;
+
+    g->main_widget = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
+
+    g->box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
+
+    orient = mate_panel_applet_get_orient (g->multiload->applet);
+    switch (orient)
+    {
+    case MATE_PANEL_APPLET_ORIENT_UP:
+    case MATE_PANEL_APPLET_ORIENT_DOWN:
+    {
+        g->orient = FALSE;
+        break;
+    }
+    case MATE_PANEL_APPLET_ORIENT_LEFT:
+    case MATE_PANEL_APPLET_ORIENT_RIGHT:
+    {
+        g->orient = TRUE;
+        break;
+    }
+    default:
+        g_assert_not_reached ();
+    }
+
+    g->frame = gtk_frame_new (NULL);
+    gtk_frame_set_shadow_type (GTK_FRAME (g->frame), GTK_SHADOW_IN);
+    gtk_container_add (GTK_CONTAINER (g->frame), g->box);
+    gtk_box_pack_start (GTK_BOX (g->main_widget), g->frame, TRUE, TRUE, 0);
+
+    load_graph_load_config (g);
+
+    g->get_data = get_data;
+
+    g->timer_index = -1;
+
+    if (g->orient)
+        gtk_widget_set_size_request (g->main_widget, -1, g->size);
+    else
+        gtk_widget_set_size_request (g->main_widget, g->size, -1);
+
+    g->disp = gtk_drawing_area_new ();
+    gtk_widget_set_events (g->disp, GDK_EXPOSURE_MASK |
+                                    GDK_ENTER_NOTIFY_MASK |
+                                    GDK_LEAVE_NOTIFY_MASK |
+                                    GDK_BUTTON_PRESS_MASK);
+
+    g_signal_connect (G_OBJECT (g->disp), "draw",
+                      G_CALLBACK (load_graph_expose), g);
+    g_signal_connect (G_OBJECT(g->disp), "configure_event",
+                      G_CALLBACK (load_graph_configure), g);
+    g_signal_connect (G_OBJECT(g->disp), "destroy",
+                      G_CALLBACK (load_graph_destroy), g);
+    g_signal_connect (G_OBJECT(g->disp), "button-press-event",
+                      G_CALLBACK (load_graph_clicked), g);
+    g_signal_connect (G_OBJECT(g->disp), "enter-notify-event",
+                      G_CALLBACK(load_graph_enter_cb), g);
+    g_signal_connect (G_OBJECT(g->disp), "leave-notify-event",
+                      G_CALLBACK(load_graph_leave_cb), g);
+
+    gtk_box_pack_start (GTK_BOX (g->box), g->disp, TRUE, TRUE, 0);
+    gtk_widget_show_all(g->box);
+
+    return g;
+}
+
+void
+load_graph_start (LoadGraph *g)
+{
+    if (g->timer_index != -1)
+        g_source_remove (g->timer_index);
+
+    g->timer_index = g_timeout_add (g->speed,
+                                    (GSourceFunc) load_graph_update, g);
+}
+
+void
+load_graph_stop (LoadGraph *g)
+{
+    if (g->timer_index != -1)
+        g_source_remove (g->timer_index);
+
+    g->timer_index = -1;
+}