#include <glib/gi18n.h>
#include <gtk/gtk.h>
+#include <math.h>
+
#include <cfg.h>
#include <plog.h>
#include <psensor.h>
/* horizontal padding */
-#define GRAPH_H_PADDING 4
+const int GRAPH_H_PADDING = 4;
/* vertical padding */
-#define GRAPH_V_PADDING 4
+const int GRAPH_V_PADDING = 4;
+
+bool is_smooth_curves_enabled;
+
+struct graph_info {
+ /* Horizontal position of the central area (curves) */
+ int g_xoff;
+ /* Vertical position of the central area (curves) */
+ int g_yoff;
+
+ /* Width of the central area (curves) */
+ int g_width;
+ /* Height of the central area (curves) */
+ int g_height;
+
+ /* Height of the drawing canvas */
+ int height;
+ /* Width of the drawing canvas */
+ int width;
+
+ /* Background color of the current desktop theme */
+ GdkRGBA theme_bg_color;
+ /* Foreground color of the current desktop theme */
+ GdkRGBA theme_fg_color;
+};
+
-static time_t get_graph_end_time_s()
+/* Return the end time of the graph i.e. the more recent measure. If
+ * no measure are available, return 0.
+ */
+static time_t get_graph_end_time_s(struct psensor **sensors)
{
- struct timeval tv;
+ time_t ret, t;
+ struct psensor *s;
+ struct measure *measures;
+ int i;
- if (gettimeofday(&tv, NULL) == 0)
- return tv.tv_sec;
- else
- return 0;
-}
+ ret = 0;
+ while (*sensors) {
+ s = *sensors;
+ measures = s->measures;
-static time_t get_graph_begin_time_s(struct config *cfg)
-{
- int ct;
+ for (i = s->values_max_length - 1; i >= 0; i--) {
+ if (measures[i].value != UNKNOWN_DBL_VALUE) {
+ t = measures[i].time.tv_sec;
+
+ if (t > ret)
+ ret = t;
+ }
+ i--;
+ }
+
+ sensors++;
+ }
- ct = get_graph_end_time_s();
+ return ret;
+}
- if (!ct)
+static time_t get_graph_begin_time_s(struct config *cfg, time_t etime)
+{
+ if (!etime)
return 0;
- return ct - cfg->graph_monitoring_duration * 60;
+ return etime - cfg->graph_monitoring_duration * 60;
}
static double
compute_y(double value, double min, double max, int height, int off)
{
double t = value - min;
+
return height - ((double)height * (t / (max - min))) + off;
}
return str;
}
+static void draw_left_region(cairo_t *cr, struct graph_info *info)
+{
+ cairo_set_source_rgb(cr,
+ info->theme_bg_color.red,
+ info->theme_bg_color.green,
+ info->theme_bg_color.blue);
+
+ cairo_rectangle(cr, 0, 0, info->g_xoff, info->height);
+ cairo_fill(cr);
+}
+
static void
draw_graph_background(cairo_t *cr,
- int g_xoff, int g_yoff,
- int g_width, int g_height,
- int width, int height, struct config *config,
- GtkWidget *widget,
- GtkWidget *window)
+ struct config *config,
+ struct graph_info *info)
{
- 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,
+ info->theme_bg_color.red,
+ info->theme_bg_color.green,
+ info->theme_bg_color.blue,
config->graph_bg_alpha);
else
cairo_set_source_rgb(cr,
- rgba.red,
- rgba.green,
- rgba.blue);
+ info->theme_bg_color.red,
+ info->theme_bg_color.green,
+ info->theme_bg_color.blue);
- cairo_rectangle(cr, 0, 0, width, height);
+ cairo_rectangle(cr, info->g_xoff, 0, info->g_width, info->height);
cairo_fill(cr);
+
if (config->alpha_channel_enabled)
cairo_set_source_rgba(cr,
bgcolor->red,
bgcolor->green,
bgcolor->blue);
- cairo_rectangle(cr, g_xoff, g_yoff, g_width, g_height);
+ cairo_rectangle(cr,
+ info->g_xoff,
+ info->g_yoff,
+ info->g_width,
+ info->g_height);
cairo_fill(cr);
}
static void draw_background_lines(cairo_t *cr,
struct color *color,
- int g_width, int g_height,
- int g_xoff, int g_yoff,
- int min, int max)
+ int min, int max,
+ struct graph_info *info)
{
int i;
/* vertical lines representing time steps */
for (i = 0; i <= 5; i++) {
- int x = i * (g_width / 5) + g_xoff;
- cairo_move_to(cr, x, g_yoff);
- cairo_line_to(cr, x, g_yoff + g_height);
+ int x = i * (info->g_width / 5) + info->g_xoff;
+
+ cairo_move_to(cr, x, info->g_yoff);
+ cairo_line_to(cr, x, info->g_yoff + info->g_height);
cairo_stroke(cr);
}
/* horizontal lines draws a line for each 10C step */
for (i = min; i < max; i++) {
if (i % 10 == 0) {
- int y = compute_y(i, min, max, g_height, g_yoff);
-
- cairo_move_to(cr, g_xoff, y);
- cairo_line_to(cr, g_xoff + g_width, y);
+ int y = compute_y(i,
+ min,
+ max,
+ info->g_height,
+ info->g_yoff);
+
+ cairo_move_to(cr, info->g_xoff, y);
+ cairo_line_to(cr, info->g_xoff + info->g_width, y);
cairo_stroke(cr);
}
}
cairo_set_dash(cr, 0, 0, 0);
}
-/* contains the time_t of the measures which have been draw ie not the
- * bezier control points for each sensor. */
+/* Keys: sensor identifier.
+ *
+ * Values: array of time_t. Each time_t is corresponding to a sensor
+ * measure which has been used as the start point of a Bezier curve.
+ */
static GHashTable *times;
static void draw_sensor_smooth_curve(struct psensor *s,
double max,
int bt,
int et,
- int g_width,
- int g_height,
- int g_xoff,
- int g_yoff)
+ struct graph_info *info)
{
int i, dt, vdt, j, k, found;
double x[4], y[4], v;
s->color->green,
s->color->blue);
+ /* search the index of the first measure used as a start point
+ * of a Bezier curve. The start and end points of the Bezier
+ * curves must be preserved to ensure the same overall shape
+ * of the graph. */
i = 0;
if (stimes) {
while (i < s->values_max_length) {
vdt = t - bt;
- x[0 + j] = ((double)vdt * g_width) / dt + g_xoff;
- y[0 + j] = compute_y(v, min, max, g_height, g_yoff);
-
+ x[0 + j] = ((double)vdt * info->g_width)
+ / dt + info->g_xoff;
+ y[0 + j] = compute_y(v,
+ min,
+ max,
+ info->g_height,
+ info->g_yoff);
if (j == 0)
t0 = t;
double max,
int bt,
int et,
- int g_width,
- int g_height,
- int g_xoff,
- int g_yoff)
+ struct graph_info *info)
{
int first, i, t, dt, vdt;
double v, x, y;
continue;
vdt = t - bt;
- if (vdt < 0)
- continue;
- x = ((double)vdt * g_width) / dt + g_xoff;
+ x = ((double)vdt * info->g_width) / dt + info->g_xoff;
- y = compute_y(v, min, max, g_height, g_yoff);
+ y = compute_y(v, min, max, info->g_height, info->g_yoff);
if (first) {
cairo_move_to(cr, x, y);
{
struct color *fgcolor = config->graph_fgcolor;
int et, bt, width, height, g_width, g_height;
- double min_rpm, max_rpm, mint, maxt;
+ double min_rpm, max_rpm, mint, maxt, min, max;
char *strmin, *strmax;
/* horizontal and vertical offset of the graph */
- int g_xoff, g_yoff, no_graphs, min, max;
+ int g_xoff, g_yoff, no_graphs;
cairo_surface_t *cst;
cairo_t *cr, *cr_pixmap;
char *str_btime, *str_etime;
struct psensor **sensor_cur, **enabled_sensors;
GtkAllocation galloc;
GtkStyleContext *style_ctx;
- GdkRGBA rgba;
+ struct graph_info info;
if (!gtk_widget_is_drawable(w_graph))
- return ;
+ return;
enabled_sensors = psensor_list_filter_graph_enabled(sensors);
maxt,
config->temperature_unit == CELSIUS);
- str_btime = time_to_str(get_graph_begin_time_s(config));
- str_etime = time_to_str(get_graph_end_time_s());
+ et = get_graph_end_time_s(enabled_sensors);
+ bt = get_graph_begin_time_s(config, et);
+
+ str_btime = time_to_str(bt);
+ str_etime = time_to_str(et);
gtk_widget_get_allocation(w_graph, &galloc);
width = galloc.width;
+ info.width = galloc.width;
height = galloc.height;
+ info.height = height;
+
cst = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
cr = cairo_create(cst);
cairo_text_extents(cr, strmin, &te_min);
g_yoff = GRAPH_V_PADDING;
+ info.g_yoff = g_yoff;
g_height = height - GRAPH_V_PADDING;
if (te_etime.height > te_btime.height)
else
g_height -= GRAPH_V_PADDING + te_btime.height + GRAPH_V_PADDING;
+ info.g_height = g_height;
+
if (te_min.width > te_max.width)
g_xoff = (2 * GRAPH_H_PADDING) + te_max.width;
else
g_xoff = (2 * GRAPH_H_PADDING) + te_min.width;
+ info.g_xoff = g_xoff;
+
+ style_ctx = gtk_widget_get_style_context(window);
+ gtk_style_context_get_background_color(style_ctx,
+ GTK_STATE_FLAG_NORMAL,
+ &info.theme_bg_color);
+ gtk_style_context_get_color(style_ctx,
+ GTK_STATE_FLAG_NORMAL,
+ &info.theme_fg_color);
+
+
g_width = width - g_xoff - GRAPH_H_PADDING;
+ info.g_width = g_width;
- draw_graph_background(cr,
- g_xoff, g_yoff, g_width, g_height,
- width, height, config,
- w_graph,
- window);
+ draw_graph_background(cr, config, &info);
- /** 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);
+ /* Set the color for text drawing */
+ cairo_set_source_rgb(cr,
+ info.theme_fg_color.red,
+ info.theme_fg_color.green,
+ info.theme_fg_color.blue);
/* draw graph begin time */
cairo_move_to(cr, g_xoff, height - GRAPH_V_PADDING);
cairo_show_text(cr, str_etime);
free(str_etime);
- /* draw min and max temp */
- cairo_move_to(cr, GRAPH_H_PADDING, te_max.height + GRAPH_V_PADDING);
- cairo_show_text(cr, strmax);
- free(strmax);
-
- cairo_move_to(cr,
- GRAPH_H_PADDING, height - (te_min.height / 2) - g_yoff);
- cairo_show_text(cr, strmin);
- free(strmin);
-
- draw_background_lines(cr, fgcolor,
- g_width, g_height,
- g_xoff, g_yoff,
- mint, maxt);
+ draw_background_lines(cr, fgcolor, mint, maxt, &info);
/* .. and finaly draws the temperature graphs */
- bt = get_graph_begin_time_s(config);
- et = get_graph_end_time_s();
-
if (bt && et) {
sensor_cur = enabled_sensors;
max = maxt;
}
- if (1)
+ if (is_smooth_curves_enabled)
draw_sensor_smooth_curve(s, cr,
min, max,
bt, et,
- g_width, g_height,
- g_xoff, g_yoff);
+ &info);
else
draw_sensor_curve(s, cr,
min, max,
bt, et,
- g_width, g_height,
- g_xoff, g_yoff);
+ &info);
sensor_cur++;
}
g_height / 2);
}
+ draw_left_region(cr, &info);
+
+ /* draw min and max temp */
+ cairo_set_source_rgb(cr,
+ info.theme_fg_color.red,
+ info.theme_fg_color.green,
+ info.theme_fg_color.blue);
+
+ cairo_move_to(cr, GRAPH_H_PADDING, te_max.height + GRAPH_V_PADDING);
+ cairo_show_text(cr, strmax);
+ free(strmax);
+
+ cairo_move_to(cr,
+ GRAPH_H_PADDING, height - (te_min.height / 2) - g_yoff);
+ cairo_show_text(cr, strmin);
+ free(strmin);
+
cr_pixmap = gdk_cairo_create(gtk_widget_get_window(w_graph));
if (cr_pixmap) {
cairo_surface_destroy(cst);
cairo_destroy(cr);
}
+
+int compute_values_max_length(struct config *c)
+{
+ int n, duration, interval;
+
+ duration = c->graph_monitoring_duration * 60;
+ interval = c->sensor_update_interval;
+
+ n = 3 + ceil((((double)duration) / interval) + 0.5) + 3;
+
+ return n;
+}
projects / psensor.git / blobdiff