diff options
Diffstat (limited to 'multiload/src/load-graph.c')
| -rw-r--r-- | multiload/src/load-graph.c | 501 |
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; +} |