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display values correctly (offsets, correct steps, suffixes, labels)

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This commit is contained in:
Tomasz Moń
2010-01-03 14:18:53 +01:00
parent 2523b27205
commit 07cfd70941
3 changed files with 369 additions and 85 deletions
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200
gui.c
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@@ -15,6 +15,7 @@
*/
#include <gtk/gtk.h>
#include <string.h>
#include "gdigi.h"
#include "gui.h"
#include "effects.h"
@@ -56,6 +57,169 @@ void show_error_message(GtkWidget *parent, gchar *message)
gtk_widget_destroy(msg);
}
/**
* \param value value to examine
* \param values EffectValues to check value against
*
* Examines whether value fits inside values range for given EffectValues.
*
* \return TRUE is value fits inside range, otherwise FALSE.
**/
static gboolean check_value_range(gint value, EffectValues *values)
{
if (((gint) values->min <= value) && (value <= (gint) values->max))
return TRUE;
else
return FALSE;
}
/**
* \param spin a GtkSpinButton
* \param new_val return value for valid input
* \param values signal user data, EffectValues for this parameter
*
* Custom GtkSpinButton "input" handler for EffectValues with non plain type.
*
* \return TRUE if new_val was set, otherwise FALSE.
**/
static gboolean custom_value_input_cb(GtkSpinButton *spin, gdouble *new_val, EffectValues *values)
{
gchar *text = g_strdup(gtk_entry_get_text(GTK_ENTRY(spin)));
gchar *err = NULL;
gdouble value;
for (;;) {
if (values->type & VALUE_TYPE_LABEL) {
/** search labels for value */
gint n;
for (n = 0; values->labels[n] != NULL; n++) {
if (g_strcmp0(values->labels[n], text) == 0) {
/* Value found */
*new_val = values->min + (gdouble)n;
g_free(text);
return TRUE;
}
}
/* Value not found */
if (values->type & VALUE_TYPE_EXTRA) {
values = values->extra;
continue;
} else {
g_free(text);
return FALSE;
}
}
if (values->type & VALUE_TYPE_SUFFIX) {
/* remove suffix from entry text */
gchar *tmp;
tmp = strstr(text, values->suffix);
if (tmp != NULL) {
gchar *temp = g_strndup(text, tmp - text);
g_free(text);
text = temp;
}
}
g_strstrip(text);
value = g_strtod(text, &err);
if (*err) {
if (values->type & VALUE_TYPE_EXTRA) {
values = values->extra;
continue;
} else {
g_free(text);
return FALSE;
}
}
if (values->type & VALUE_TYPE_STEP) {
value /= values->step;
}
if (values->type & VALUE_TYPE_OFFSET) {
value -= values->offset;
}
if (check_value_range((gint) value, values) == FALSE) {
if (values->type & VALUE_TYPE_EXTRA) {
values = values->extra;
continue;
} else {
g_free(text);
return FALSE;
}
}
*new_val = value;
g_free(text);
return TRUE;
}
}
/**
* \param spin a GtkSpinButton
* \param values signal user data, EffectValues for this parameter
*
* Custom GtkSpinButton "output" handler for EffectValues with non plain type.
*
* \return TRUE if text was set, otherwise FALSE.
**/
static gboolean custom_value_output_cb(GtkSpinButton *spin, EffectValues *values)
{
GtkAdjustment *adj;
gchar *text;
gdouble value;
adj = gtk_spin_button_get_adjustment(spin);
value = gtk_adjustment_get_value(adj);
while (check_value_range(value, values) == FALSE) {
if (values->type & VALUE_TYPE_EXTRA) {
values = values->extra;
} else {
g_message("custom_value_output_cb called with out of bounds value");
return FALSE;
}
}
if (values->type & VALUE_TYPE_LABEL) {
gtk_entry_set_text(GTK_ENTRY(spin), values->labels[(gint) value - (gint) values->min]);
return TRUE;
}
if (values->type & VALUE_TYPE_OFFSET) {
value += (gdouble) values->offset;
}
if (values->type & VALUE_TYPE_STEP) {
value *= values->step;
}
if (values->type & VALUE_TYPE_DECIMAL) {
text = g_strdup_printf("%.*f", values->decimal, value);
} else {
text = g_strdup_printf("%d", (gint) value);
}
if (values->type & VALUE_TYPE_SUFFIX) {
gchar *tmp;
tmp = g_strdup_printf("%s %s", text, values->suffix);
g_free(text);
text = tmp;
}
gtk_entry_set_text(GTK_ENTRY(spin), text);
g_free(text);
return TRUE;
}
/**
* \param adj the object which emitted the signal
* \param setting setting controlled by adj
@@ -71,20 +235,6 @@ void value_changed_option_cb(GtkAdjustment *adj, EffectSettings *setting)
g_object_get(G_OBJECT(adj), "value", &val, NULL);
set_option(setting->id, setting->position, (gint)val);
}
if (setting->values != NULL && setting->values->labels != NULL) {
GtkWidget *label;
gint x;
gdouble val = -1.0;
g_object_get(G_OBJECT(adj), "value", &val, NULL);
x = (gint)val;
if ((x >= setting->values->min) && (x <= setting->values->max)) {
label = g_object_get_data(G_OBJECT(adj), "label");
gtk_label_set_text(GTK_LABEL(label), setting->values->labels[x]);
}
}
}
/**
@@ -248,20 +398,24 @@ GtkWidget *create_table(EffectSettings *settings, gint amt, GHashTable *widget_t
table = gtk_table_new(3, amt, FALSE);
for (x = 0; x<amt; x++) {
gdouble min, max;
gboolean custom;
get_values_info(settings[x].values, &min, &max, &custom);
label = gtk_label_new(settings[x].label);
adj = gtk_adjustment_new(0.0, settings[x].values->min, settings[x].values->max,
adj = gtk_adjustment_new(0.0, min, max,
1.0, /* step increment */
MAX((settings[x].values->max / 100), 5.0), /* page increment */
MAX((max / 100), 5.0), /* page increment */
0.0);
knob = gtk_knob_new(GTK_ADJUSTMENT(adj), knob_anim);
if (settings[x].values->labels == NULL) {
widget = gtk_spin_button_new(GTK_ADJUSTMENT(adj), 1.0, 0);
gtk_spin_button_set_numeric(GTK_SPIN_BUTTON(widget), TRUE);
gtk_spin_button_set_update_policy(GTK_SPIN_BUTTON(widget), GTK_UPDATE_IF_VALID);
} else {
widget = gtk_label_new(settings[x].values->labels[0]);
g_object_set_data(G_OBJECT(adj), "label", widget);
widget = gtk_spin_button_new(GTK_ADJUSTMENT(adj), 1.0, 0);
gtk_spin_button_set_numeric(GTK_SPIN_BUTTON(widget), FALSE);
gtk_spin_button_set_update_policy(GTK_SPIN_BUTTON(widget), GTK_UPDATE_IF_VALID);
if (custom == TRUE) {
g_signal_connect(G_OBJECT(widget), "input", G_CALLBACK(custom_value_input_cb), settings[x].values);
g_signal_connect(G_OBJECT(widget), "output", G_CALLBACK(custom_value_output_cb), settings[x].values);
}
widget_tree_add(adj, settings[x].id, settings[x].position, -1, -1);