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style fix, convert dialog size preview in SI units

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This commit is contained in:
Mario Hüttel
2019-03-08 20:46:48 +01:00
parent 34a19fa11d
commit bbf08a4d6e
2 changed files with 60 additions and 10 deletions
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58
widgets/conv-settings-dialog.c
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@@ -127,24 +127,73 @@ static gboolean shape_drawer_drawing_callback(GtkWidget *widget, cairo_t *cr, gp
return FALSE;
}
static double convert_number_to_engineering(double input, const char **out_prefix)
{
const char *selected_prefix = NULL;
double return_val = 0.0;
int idx;
const static char * prefixes[] = {"y", "z", "a", "f", "p", "n", "u", "m", "c", "d", /* < 1 */
"", /* 1 */
"h", "k", "M", "G", "T", "P", "E", "Z", "Y"}; /* > 1 */
const static double scale[] = {1E-24, 1E-21, 1E-18, 1E-15, 1E-12, 1E-9, 1E-6, 1E-3, 1E-2, 1E-1,
1,
1E2, 1E3, 1E6, 1E9, 1E12, 1E15, 1E18, 1E21, 1E24};
const int prefix_count = (int)(sizeof(prefixes)/sizeof(char *));
for (idx = 1; idx < prefix_count; idx++) {
if (input < scale[idx]) {
/* This prefix is bigger than the number. Take the previous one */
selected_prefix = prefixes[idx-1];
return_val = input / scale[idx-1];
break;
}
}
/* Check if prefix was set by loop. Else take the largest in the list */
if (selected_prefix == NULL) {
selected_prefix = prefixes[prefix_count-1];
return_val = input / scale[prefix_count-1];
}
if (out_prefix)
*out_prefix = selected_prefix;
return return_val;
}
static void renderer_settings_dialog_update_labels(RendererSettingsDialog *self)
{
char default_buff[100];
double scale;
double width_meters;
double height_meters;
double width_engineering;
const char *width_prefix;
double height_engineering;
const char *height_prefix;
if (!self)
return;
snprintf(default_buff, sizeof(default_buff), "Width: %E", self->cell_width * self->unit_in_meters);
width_meters = (double)self->cell_width * self->unit_in_meters;
height_meters = (double)self->cell_height * self->unit_in_meters;
width_engineering = convert_number_to_engineering(width_meters, &width_prefix);
height_engineering = convert_number_to_engineering(height_meters, &height_prefix);
snprintf(default_buff, sizeof(default_buff), "Width: %.3lf %sm", width_engineering, width_prefix);
gtk_label_set_text(self->x_label, default_buff);
snprintf(default_buff, sizeof(default_buff), "Height: %E", self->cell_height * self->unit_in_meters);
snprintf(default_buff, sizeof(default_buff), "Height: %.3lf %sm", height_engineering, height_prefix);
gtk_label_set_text(self->y_label, default_buff);
scale = gtk_range_get_value(GTK_RANGE(self->scale));
snprintf(default_buff, sizeof(default_buff), "Output Width: %u px", (unsigned int)((double)self->cell_width / scale));
/* Set the pixel sizes */
snprintf(default_buff, sizeof(default_buff), "Output Width: %u px",
(unsigned int)((double)self->cell_width / scale));
gtk_label_set_text(self->x_output_label, default_buff);
snprintf(default_buff, sizeof(default_buff), "Output Height: %u px", (unsigned int)((double)self->cell_height / scale));
snprintf(default_buff, sizeof(default_buff), "Output Height: %u px",
(unsigned int)((double)self->cell_height / scale));
gtk_label_set_text(self->y_output_label, default_buff);
}
@@ -265,7 +314,6 @@ void renderer_settings_dialog_set_cell_width(RendererSettingsDialog *dialog, uns
if (width == 0)
width = 1;
dialog->cell_width = width;
renderer_settings_dialog_update_labels(dialog);
}