static int select_trace(int x, int y) {
int n;
scope_disp_t *disp = &(ctrl_usr->disp);
min_dist = hypot(disp->width, disp->height) / 100.;
if(min_dist < 5) min_dist = 5;
target = -1;
DRAWING = 0;
select_x = x;
select_y = y;
for(n=0; n<16; n++) {
scope_vert_t *vert = &(ctrl_usr->vert);
draw_baseline(n+1, FALSE);
if((vert->chan_enabled[n]) && (vert->data_offset[n] >= 0)) {
draw_waveform(n+1, FALSE);
}
}
draw_triggerline(ctrl_shm->trig_chan, FALSE);
return target;
}
int main(int argc, char* argv[])
{
struct wave* w;
struct image* img;
int width, height;
char* in_file_name;
char* out_file_name;
FILE* file;
int style = DEFAULT_STYLE;
/* Options */
int c;
opterr = 0;
print_greeting();
/* Defaults */
width = 1024;
height = 256;
in_file_name = "";
out_file_name = "";
while ((c = getopt (argc, argv, "W:H:hi:o:s:")) != -1)
switch (c)
{
case 'W':
width = atoi(optarg);
DPRINTF("Width set to %d\n", width);
break;
case 'H':
height = atoi(optarg);
DPRINTF("Height set to %d\n", height);
break;
case 'h':
print_help();
return 0;
break;
case 'i':
in_file_name = optarg;
break;
case 'o':
out_file_name = optarg;
break;
case 's':
style = MIN(MAX(atoi(optarg), 1), MAX_STYLE);
printf("Style set to %d\n", style);
break;
case '?':
fprintf (stderr, "Unknown option `-%c'.\n", optopt);
return 1;
default:
abort();
}
if (argc == 1) {
print_help();
return 0;
}
w = ini_wave(in_file_name);
assert(w!=NULL);
DPRINTF(PRINT_DIVISION);
DPRINTF("We seem to have a valid WAVE file!\n");
/* Create image. Note width first.*/
img = image_alloc(width, height);
draw_waveform(w, img, style);
/* Output where? */
if (strlen(out_file_name) == 0) {
asprintf(&out_file_name, "%s.png", in_file_name); /* Small leak; avoiding it would be a bit messy. */
}
/* Open */
printf("Writing to file %s\n", out_file_name);
file = fopen(out_file_name, "w");
assert(file != NULL);
/* Write */
write_PNG_image_to_file(file, img);
/* Close */
image_free(img);
fclose(file);
cleanup_wave(w);
free(w);
return 0;
}
void refresh_display(void)
{
int n;
scope_disp_t *disp;
scope_vert_t *vert;
scope_horiz_t *horiz;
int depth;
double pixels_per_div, pixels_per_sec, overall_record_length;
double screen_center_time, screen_start_time, screen_end_time;
/* cancel any pending refresh request */
ctrl_usr->display_refresh_timer = 0;
/* set pointers */
disp = &(ctrl_usr->disp);
vert = &(ctrl_usr->vert);
horiz = &(ctrl_usr->horiz);
/* get window pointer */
disp->win = disp->drawing->window;
if (disp->win == NULL) {
/* window isn't visible yet, do nothing */
printf("refresh_display(): win = NULL, bailing!\n");
return;
}
/* create drawing context if needed */
if (disp->context == NULL) {
disp->context = gdk_gc_new(disp->win);
}
/* get window dimensions */
gdk_window_get_geometry(disp->win, NULL, NULL, &(disp->width),
&(disp->height), &depth);
/* calculate horizontal params that depend on width */
pixels_per_div = disp->width * 0.1;
pixels_per_sec = pixels_per_div / horiz->disp_scale;
disp->pixels_per_sample = pixels_per_sec * horiz->sample_period;
overall_record_length = horiz->sample_period * ctrl_shm->rec_len;
screen_center_time = overall_record_length * horiz->pos_setting;
screen_start_time = screen_center_time - (5.0 * horiz->disp_scale);
disp->horiz_offset = screen_start_time * pixels_per_sec;
disp->start_sample = screen_start_time / horiz->sample_period;
if (disp->start_sample < 0) {
disp->start_sample = 0;
}
screen_end_time = screen_center_time + (5.0 * horiz->disp_scale);
disp->end_sample = (screen_end_time / horiz->sample_period) + 1;
if (disp->end_sample > ctrl_shm->rec_len - 1) {
disp->end_sample = ctrl_shm->rec_len - 1;
}
{
GdkRectangle rect = {0, 0, disp->width, disp->height};
GdkRegion *region = gdk_region_rectangle(&rect);
gdk_window_begin_paint_region(disp->drawing->window, region);
gdk_region_destroy(region);
}
DRAWING = 1;
clear_display_window();
draw_grid();
/* calculate offsets for AC-offset channels */
for (n = 0; n < 16; n++) {
if (vert->chan_enabled[n]) calculate_offset(n);
}
/* draw baselines first */
for (n = 0; n < 16; n++) {
if ((vert->chan_enabled[n]) && (n + 1 != vert->selected)) {
draw_baseline(n + 1, FALSE);
}
}
if (vert->chan_enabled[vert->selected - 1]) {
draw_baseline(vert->selected, TRUE);
}
/* Draw trigger line */
if (vert->chan_enabled[ctrl_shm->trig_chan - 1]) {
draw_triggerline(ctrl_shm->trig_chan,
ctrl_shm->trig_chan == vert->selected);
}
conflict_reset(disp->height);
/* draw non-highlighted waveforms next */
for (n = 0; n < 16; n++) {
if ((vert->chan_enabled[n]) && (vert->data_offset[n] >= 0)
&& (n + 1 != vert->selected)) {
draw_waveform(n + 1, FALSE);
}
}
/* draw highlighted waveform last */
if ((vert->chan_enabled[vert->selected - 1])
&& (vert->data_offset[vert->selected - 1] >= 0)) {
draw_waveform(vert->selected, TRUE);
}
update_readout();
gdk_window_end_paint(disp->drawing->window);
}
static void redraw(void) {
glClear(GL_COLOR_BUFFER_BIT);
draw_grid();
draw_waveform();
glfwSwapBuffers(main_window);
}