renamed enabled => graph_enabled
[psensor.git] / src / graph.c
index 2625ce5..71e8396 100644 (file)
@@ -1,27 +1,31 @@
 /*
-    Copyright (C) 2010-2011 jeanfi@gmail.com
-
-    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., 51 Franklin Street, Fifth Floor, Boston, MA
-    02110-1301 USA
-*/
-
+ * Copyright (C) 2010-2013 jeanfi@gmail.com
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
 #include <stdlib.h>
+#include <string.h>
+
 #include <sys/time.h>
+
+#include <glib/gi18n.h>
 #include <gtk/gtk.h>
 
 #include "cfg.h"
+#include "log.h"
 #include "psensor.h"
 
 /* horizontal padding */
@@ -74,31 +78,57 @@ static char *time_to_str(time_t s)
 
 static void
 draw_graph_background(cairo_t *cr,
-                     int width, int height, struct config *config)
+                     int g_xoff, int g_yoff,
+                     int g_width, int g_height,
+                     int width, int height, struct config *config,
+                     GtkWidget *widget,
+                     GtkWidget *window)
 {
-       struct color *bgcolor = config->graph_bgcolor;
+       GtkStyleContext *style_ctx;
+       struct color *bgcolor;
+       GdkRGBA rgba;
+
+       bgcolor = config->graph_bgcolor;
+
+       style_ctx = gtk_widget_get_style_context(window);
+       gtk_style_context_get_background_color(style_ctx,
+                                              GTK_STATE_FLAG_NORMAL,
+                                              &rgba);
+
+       if (config->alpha_channel_enabled)
+               cairo_set_source_rgba(cr,
+                                     rgba.red,
+                                     rgba.green,
+                                     rgba.blue,
+                                     config->graph_bg_alpha);
+       else
+               cairo_set_source_rgb(cr,
+                                    rgba.red,
+                                    rgba.green,
+                                    rgba.blue);
 
-       /* draw background */
+       cairo_rectangle(cr, 0, 0, width, height);
+       cairo_fill(cr);
        if (config->alpha_channel_enabled)
                cairo_set_source_rgba(cr,
                                      bgcolor->f_red,
                                      bgcolor->f_green,
-                                     bgcolor->f_blue, config->graph_bg_alpha);
+                                     bgcolor->f_blue,
+                                     config->graph_bg_alpha);
        else
                cairo_set_source_rgb(cr,
                                     bgcolor->f_red,
-                                    bgcolor->f_green, bgcolor->f_blue);
+                                    bgcolor->f_green,
+                                    bgcolor->f_blue);
 
-       cairo_rectangle(cr, 0, 0, width, height);
+       cairo_rectangle(cr, g_xoff, g_yoff, g_width, g_height);
        cairo_fill(cr);
 }
 
 /* setup dash style */
 static double dashes[] = {
        1.0,            /* ink */
-       1.0,            /* skip */
-       1.0,            /* ink */
-       1.0             /* skip */
+       2.0,            /* skip */
 };
 static int ndash = sizeof(dashes) / sizeof(dashes[0]);
 
@@ -111,8 +141,8 @@ static void draw_background_lines(cairo_t *cr,
        int i;
 
        /* draw background lines */
-       cairo_set_dash(cr, dashes, ndash, 0);
        cairo_set_line_width(cr, 1);
+       cairo_set_dash(cr, dashes, ndash, 0);
        cairo_set_source_rgb(cr,
                             color->f_red, color->f_green, color->f_blue);
 
@@ -137,7 +167,6 @@ static void draw_background_lines(cairo_t *cr,
 
        /* back to normal line style */
        cairo_set_dash(cr, 0, 0, 0);
-
 }
 
 static void draw_sensor_curve(struct psensor *s,
@@ -151,26 +180,28 @@ static void draw_sensor_curve(struct psensor *s,
                              int g_xoff,
                              int g_yoff)
 {
-       int first = 1;
-       int i;
+       int first, i, x, y, t, dt, vdt;
+       double v;
 
        cairo_set_source_rgb(cr,
                             s->color->f_red,
                             s->color->f_green,
                             s->color->f_blue);
-       cairo_set_line_width(cr, 1);
 
+       dt = et - bt;
+       first = 1;
        for (i = 0; i < s->values_max_length; i++) {
-               int x, y, t;
-               double v;
-
                t = s->measures[i].time.tv_sec;
                v = s->measures[i].value;
 
-               if (v == UNKNOWN_VALUE || !t || (t - bt) < 0)
+               if (v == UNKNOWN_DBL_VALUE || !t)
                        continue;
 
-               x = (t - bt) * g_width / (et - bt) + g_xoff;
+               vdt = t - bt;
+               if (vdt < 0)
+                       continue;
+
+               x = vdt * g_width / dt + g_xoff;
 
                y = compute_y(v, min, max, g_height, g_yoff);
 
@@ -185,47 +216,71 @@ static void draw_sensor_curve(struct psensor *s,
        cairo_stroke(cr);
 }
 
-
-void
-graph_update(struct psensor **sensors,
-            GtkWidget *w_graph, struct config *config)
+static void display_no_graphs_warning(cairo_t *cr, int x, int y)
 {
-       struct color *fgcolor = config->graph_fgcolor;
-       int et, bt;
-       double min_rpm = get_min_rpm(sensors);
-       double max_rpm = get_max_rpm(sensors);
+       char *msg;
 
-       double mint = get_min_temp(sensors);
-       char *strmin = psensor_value_to_string(SENSOR_TYPE_TEMP, mint);
+       msg = strdup(_("No graphs enabled"));
 
-       double maxt = get_max_temp(sensors);
-       char *strmax = psensor_value_to_string(SENSOR_TYPE_TEMP, maxt);
+       cairo_select_font_face(cr,
+                              "sans-serif",
+                              CAIRO_FONT_SLANT_NORMAL,
+                              CAIRO_FONT_WEIGHT_NORMAL);
+       cairo_set_font_size(cr, 18.0);
 
-       int width = w_graph->allocation.width;
-       int height = w_graph->allocation.height;
+       cairo_move_to(cr, x, y);
+       cairo_show_text(cr, msg);
 
-       int g_width, g_height;
+       free(msg);
+}
 
+void
+graph_update(struct psensor **sensors,
+            GtkWidget *w_graph,
+            struct config *config,
+            GtkWidget *window)
+{
+       struct color *fgcolor = config->graph_fgcolor;
+       int et, bt, width, height, g_width, g_height;
+       double min_rpm, max_rpm, mint, maxt;
+       char *strmin, *strmax;
        /* horizontal and vertical offset of the graph */
-       int g_xoff, g_yoff;
+       int g_xoff, g_yoff, no_graphs, min, max;
+       cairo_surface_t *cst;
+       cairo_t *cr, *cr_pixmap;
+       char *str_btime, *str_etime;
+       cairo_text_extents_t te_btime, te_etime, te_max, te_min;
+       struct psensor **sensor_cur;
+       GtkAllocation galloc;
+       GtkStyleContext *style_ctx;
+       GdkRGBA rgba;
 
-       cairo_surface_t *cst = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
-                                                         width,
-                                                         height);
-       cairo_t *cr = cairo_create(cst);
-       cairo_t *cr_pixmap;
+       if (!gtk_widget_is_drawable(w_graph))
+               return ;
 
-       char *str_btime = time_to_str(get_graph_begin_time_s(config));
-       cairo_text_extents_t te_btime;
+       min_rpm = get_min_rpm(sensors);
+       max_rpm = get_max_rpm(sensors);
 
-       char *str_etime = time_to_str(get_graph_end_time_s());
-       cairo_text_extents_t te_etime;
+       mint = get_min_temp(sensors);
 
-       cairo_text_extents_t te_max, te_min;
+       strmin = psensor_value_to_str(SENSOR_TYPE_TEMP,
+                                     mint,
+                                     config->temperature_unit == CELCIUS);
 
-       struct psensor **sensor_cur;
+       maxt = get_max_temp(sensors);
+       strmax = psensor_value_to_str(SENSOR_TYPE_TEMP,
+                                     maxt,
+                                     config->temperature_unit == CELCIUS);
+
+       str_btime = time_to_str(get_graph_begin_time_s(config));
+       str_etime = time_to_str(get_graph_end_time_s());
+
+       gtk_widget_get_allocation(w_graph, &galloc);
+       width = galloc.width;
+       height = galloc.height;
 
-       draw_graph_background(cr, width, height, config);
+       cst = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
+       cr = cairo_create(cst);
 
        cairo_select_font_face(cr,
                               "sans-serif",
@@ -253,8 +308,16 @@ graph_update(struct psensor **sensors,
 
        g_width = width - g_xoff - GRAPH_H_PADDING;
 
-       cairo_set_source_rgb(cr,
-                            fgcolor->f_red, fgcolor->f_green, fgcolor->f_blue);
+       draw_graph_background(cr,
+                             g_xoff, g_yoff, g_width, g_height,
+                             width, height, config,
+                             w_graph,
+                             window);
+
+       /** Set the color for text drawing */
+       style_ctx = gtk_widget_get_style_context(window);
+       gtk_style_context_get_color(style_ctx, GTK_STATE_FLAG_NORMAL, &rgba);
+       cairo_set_source_rgb(cr, rgba.red, rgba.green, rgba.blue);
 
        /* draw graph begin time */
        cairo_move_to(cr, g_xoff, height - GRAPH_V_PADDING);
@@ -289,15 +352,23 @@ graph_update(struct psensor **sensors,
 
        if (bt && et) {
                sensor_cur = sensors;
+
+               cairo_set_line_join(cr, CAIRO_LINE_JOIN_ROUND);
+               cairo_set_line_width(cr, 1);
+               no_graphs = 1;
                while (*sensor_cur) {
                        struct psensor *s = *sensor_cur;
 
-                       if (s->enabled) {
-                               double min, max;
-
+                       if (s->graph_enabled) {
+                               no_graphs = 0;
                                if (is_fan_type(s->type)) {
                                        min = min_rpm;
                                        max = max_rpm;
+                               } else if (s->type & SENSOR_TYPE_CPU_USAGE) {
+                                       min = 0;
+                                       max = get_max_value
+                                               (sensors,
+                                                SENSOR_TYPE_CPU_USAGE);
                                } else {
                                        min = mint;
                                        max = maxt;
@@ -312,6 +383,11 @@ graph_update(struct psensor **sensors,
 
                        sensor_cur++;
                }
+
+               if (no_graphs)
+                       display_no_graphs_warning(cr,
+                                                 g_xoff + 12,
+                                                 g_height / 2);
        }
 
        cr_pixmap = gdk_cairo_create(gtk_widget_get_window(w_graph));