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#include <clutter/clutter.h>
#include <stdlib.h>
#include <string.h>
#define STAGE_WIDTH 800
#define STAGE_HEIGHT 600
static int font_size;
static int n_chars;
static int rows, cols;
static void
on_paint (ClutterActor *actor, gconstpointer *data)
{
static GTimer *timer = NULL;
static int fps = 0;
if (!timer)
{
timer = g_timer_new ();
g_timer_start (timer);
}
if (g_timer_elapsed (timer, NULL) >= 1)
{
printf ("fps=%d, strings/sec=%d, chars/sec=%d\n",
fps,
fps * rows * cols,
fps * rows * cols * n_chars);
g_timer_start (timer);
fps = 0;
}
++fps;
}
static gboolean
queue_redraw (gpointer stage)
{
clutter_actor_queue_redraw (CLUTTER_ACTOR (stage));
return TRUE;
}
static gunichar
get_character (int ch)
{
int total_letters = 0;
int i;
static const struct
{
gunichar first_letter;
int n_letters;
}
ranges[] =
{
{ 'a', 26 }, /* lower case letters */
{ 'A', 26 }, /* upper case letters */
{ '0', 10 }, /* digits */
{ 0x410, 0x40 }, /* cyrillic alphabet */
{ 0x3b1, 18 } /* greek alphabet */
};
for (i = 0; i < G_N_ELEMENTS (ranges); i++)
total_letters += ranges[i].n_letters;
ch %= total_letters;
for (i = 0; i < G_N_ELEMENTS (ranges) - 1; i++)
if (ch < ranges[i].n_letters)
return ch + ranges[i].first_letter;
else
ch -= ranges[i].n_letters;
return ch + ranges[i].first_letter;
}
static ClutterActor *
create_label (void)
{
ClutterColor label_color = { 0xff, 0xff, 0xff, 0xff };
ClutterActor *label;
char *font_name;
GString *str;
int i;
font_name = g_strdup_printf ("Monospace %dpx", font_size);
str = g_string_new (NULL);
for (i = 0; i < n_chars; i++)
g_string_append_unichar (str, get_character (i));
label = clutter_text_new_with_text (font_name, str->str);
clutter_text_set_color (CLUTTER_TEXT (label), &label_color);
g_free (font_name);
g_string_free (str, TRUE);
return label;
}
int
main (int argc, char *argv[])
{
ClutterActor *stage;
ClutterColor stage_color = { 0x00, 0x00, 0x00, 0xff };
ClutterActor *label;
int w, h;
int row, col;
float scale = 1.0f;
g_setenv ("CLUTTER_VBLANK", "none", FALSE);
g_setenv ("CLUTTER_DEFAULT_FPS", "1000", FALSE);
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
return 1;
if (argc != 3)
{
g_printerr ("Usage test-text-perf FONT_SIZE N_CHARS\n");
exit (1);
}
font_size = atoi (argv[1]);
n_chars = atoi (argv[2]);
g_print ("Monospace %dpx, string length = %d\n", font_size, n_chars);
stage = clutter_stage_get_default ();
clutter_actor_set_size (stage, STAGE_WIDTH, STAGE_HEIGHT);
clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_color);
g_signal_connect (stage, "paint", G_CALLBACK (on_paint), NULL);
label = create_label ();
w = clutter_actor_get_width (label);
h = clutter_actor_get_height (label);
/* If the label is too big to fit on the stage then scale it so that
it will fit */
if (w > STAGE_WIDTH || h > STAGE_HEIGHT)
{
float x_scale = STAGE_WIDTH / (float) w;
float y_scale = STAGE_HEIGHT / (float) h;
if (x_scale < y_scale)
{
scale = x_scale;
cols = 1;
rows = STAGE_HEIGHT / (h * scale);
}
else
{
scale = y_scale;
cols = STAGE_WIDTH / (w * scale);
rows = 1;
}
g_print ("Text scaled by %f to fit on the stage\n", scale);
}
else
{
cols = STAGE_WIDTH / w;
rows = STAGE_HEIGHT / h;
}
clutter_actor_destroy (label);
for (row=0; row<rows; row++)
for (col=0; col<cols; col++)
{
label = create_label();
clutter_actor_set_scale (label, scale, scale);
clutter_actor_set_position (label, w * col * scale, h * row * scale);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), label);
}
clutter_actor_show_all (stage);
g_idle_add (queue_redraw, stage);
clutter_main ();
return 0;
}
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