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;
+}