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/********************* -*- mode: C; coding: utf-8 -*- *************************/
/**
* \file dialogSupport.c
* \brief Dialog helper functions.
*
* \author Copyright (C) 2006, 2011, 2012 Ralf Hoppe <ralf.hoppe@ieee.org>
* \version $Id: dialogSupport.c 235 2012-06-08 15:32:46Z ralf $
*
******************************************************************************/
/* INCLUDE FILES **************************************************************/
#include "gui.h"
#include "dialogSupport.h"
#include "cfgSettings.h"
#include <stdlib.h>
#include <stdarg.h>
#include <errno.h>
#include <glib.h>
/* GLOBAL CONSTANT DEFINITIONS ************************************************/
/* GLOBAL VARIABLE DEFINITIONS ************************************************/
/* LOCAL TYPE DECLARATIONS ****************************************************/
/* LOCAL CONSTANT DEFINITIONS *************************************************/
/* LOCAL VARIABLE DEFINITIONS *************************************************/
/* LOCAL MACRO DEFINITIONS ****************************************************/
/* LOCAL FUNCTION DECLARATIONS ************************************************/
static void dlgEntryNumericError (GtkWidget* entry, double vmin, double vmax);
/* LOCAL FUNCTION DEFINITIONS *************************************************/
/* FUNCTION *******************************************************************/
/** Error dialog for GTkEntry dialog elements.
*
* \param entry GtkEntry widget which has generated the error.
* \param vmin Minimum allowed value (after applying \p multiplier).
* \param vmax Maximum allowed value (after applying \p multiplier).
*
******************************************************************************/
static void dlgEntryNumericError (GtkWidget* entry, double vmin, double vmax)
{
GList* list;
GtkWidget* topWidget = gtk_widget_get_toplevel (entry);
gtk_widget_grab_focus (entry);
/* Get list of mnemonic labels for GtkEntry
*/
list = gtk_widget_list_mnemonic_labels (entry);
ASSERT (g_list_first (list)->data != NULL); /* required by GUI design */
dlgError (topWidget,
_("Input \"<b>%s</b>\" is invalid for <b>%s</b> (min. %G, max. %G)."),
gtk_entry_get_text (GTK_ENTRY (entry)),
gtk_label_get_label (GTK_LABEL (g_list_first (list)->data)),
vmin, vmax);
g_list_free(list);
} /* dlgEntryNumericError() */
/* EXPORTED FUNCTION DEFINITIONS **********************************************/
/* FUNCTION *******************************************************************/
/** Generic error message dialog.
*
* \param topWidget Toplevel widget.
* \param format Printf like format string.
* \param ... Arguments associated with format string.
*
******************************************************************************/
void dlgError (GtkWidget* topWidget, char* format, ...)
{
va_list args;
gchar *msg;
GtkWidget *dialog;
va_start(args, format);
msg = g_strdup_vprintf (format, args);
dialog = gtk_message_dialog_new_with_markup (GTK_WINDOW (topWidget),
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
"%s",
msg);
gtk_dialog_run (GTK_DIALOG (dialog));
gtk_widget_destroy (dialog);
va_end(args);
g_free (msg);
} /* dlgError() */
/* FUNCTION *******************************************************************/
/** File error message dialog.
*
* \param topWidget Toplevel widget.
* \param format Printf like format string.
* \param filename Filename in filesystem coding (must not be UTF-8), which
* is used as first argument into the format string (needs
* %s format coding).
* \param err GLib error pointer.
*
******************************************************************************/
void dlgErrorFile (GtkWidget* topWidget, char* format, char *filename, GError *err)
{
GtkWidget *dialog;
char *utf8name = g_filename_to_utf8 (filename, -1, NULL, NULL, NULL);
if (utf8name == NULL) /* may be an UTF-8 conversion error */
{
utf8name = g_strdup (_("<i>Unknown</i>"));
} /* if */
dialog = gtk_message_dialog_new_with_markup (GTK_WINDOW (topWidget),
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
format, filename);
if (err != NULL)
{
gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
"%s", err->message);
} /* if */
gtk_dialog_run (GTK_DIALOG (dialog));
gtk_widget_destroy (dialog);
g_free (utf8name);
} /* dlgErrorFile() */
/* FUNCTION *******************************************************************/
/** Fetches a double value from a GtkEntry dialog widget.
*
* \param topWidget Toplevel widget.
* \param ename Name of text entry widget (as set with GLADE_HOOKUP_OBJECT).
* \param vmin Minimum allowed value (after applying \p multiplier).
* \param vmax Maximum allowed value (after applying \p multiplier).
* \param multiplier Multiplier for scaling the result (wrt. units).
* \param pResult Pointer to result buffer.
*
* \return TRUE on success, else FALSE. If FALSE is returned then
* a message was given to the user indicating the wrong
* input.
******************************************************************************/
BOOL dlgGetDouble (GtkWidget* topWidget, const char *ename,
double vmin, double vmax, double multiplier, double *pResult)
{
const char *str;
char *tail;
double result;
GtkWidget *entry = lookup_widget (topWidget, ename);
ASSERT (entry != NULL);
str = gtk_entry_get_text (GTK_ENTRY (entry));
errno = 0;
result = g_strtod (str, &tail);
if ((errno == 0) && (tail != str) && (*tail == '\0'))
{
result *= multiplier;
if ((result >= vmin) && (result <= vmax))
{
*pResult = result;
return TRUE;
} /* if */
} /* if */
dlgEntryNumericError (entry, vmin / multiplier, vmax / multiplier);
return FALSE;
} /* dlgGetDouble() */
/* FUNCTION *******************************************************************/
/** Fetches an integer value from a GtkEntry dialog widget.
*
* \param topWidget Toplevel widget.
* \param ename Name of text entry widget (as set by GLADE_HOOKUP_OBJECT).
* \param vmin Minimum allowed value.
* \param vmax Maximum allowed value.
* \param pResult Pointer to result buffer.
*
* \return TRUE on success, else FALSE. If FALSe is returned then
* a message was given to the user indicating the wrong
* input.
******************************************************************************/
BOOL dlgGetInt (GtkWidget* topWidget, const char *ename,
int vmin, int vmax, int *pResult)
{
const char *str;
char *tail;
long int result;
GtkWidget *entry = lookup_widget (topWidget, ename);
ASSERT (entry != NULL);
str = gtk_entry_get_text (GTK_ENTRY (entry));
errno = 0;
result = strtol (str, &tail, 10);
if ((errno == 0) && (tail != str) && (*tail == '\0'))
{
if ((result >= vmin) && (result <= vmax))
{
*pResult = result;
return TRUE;
} /* if */
} /* if */
dlgEntryNumericError (entry, vmin, vmax);
return FALSE;
} /* dlgGetInt() */
/* FUNCTION *******************************************************************/
/** Sets a double value into a GtkEntry dialog widget.
*
* \param topWidget Toplevel widget.
* \param name Name of text entry widget (as set by GLADE_HOOKUP_OBJECT).
* \param multiplier Multiplier for scaling the result (wrt. units).
* \param value The double value to set.
*
******************************************************************************/
void dlgSetDouble (GtkWidget* topWidget, const char *name,
double multiplier, double value)
{
char text[128];
g_snprintf (text, sizeof(text), "%.*G", cfgGetDesktopPrefs()->outprec,
value / multiplier);
gtk_entry_set_text (GTK_ENTRY (lookup_widget (topWidget, name)), text);
} /* dlgSetDouble() */
/* FUNCTION *******************************************************************/
/** A little popup dialog, where the user shall enter a double value.
*
* \param title Title of window.
* \param label Label to put before the GtkEntry text field.
* \param comment An introduction displayed at top of the dialog (may be
* NULL, then nothing is displayed at top position).
* \param pResult Pointer to result buffer, which must be initialized with
* a default value.
*
* \return TRUE on success, FALSE if the user has canceled.
******************************************************************************/
BOOL dlgPopupDouble (char *title, char *label, char *comment, double *pResult)
{
BOOL ret;
char text[128];
GtkWidget *widget, *entry, *vbox, *hbox;
GtkWidget *dialog = gtk_dialog_new ();
gtk_window_set_title (GTK_WINDOW (dialog), title);
gtk_window_set_type_hint (GTK_WINDOW (dialog), GDK_WINDOW_TYPE_HINT_DIALOG);
vbox = GTK_DIALOG (dialog)->vbox;
if (comment != NULL)
{
widget = gtk_label_new (comment);
gtk_label_set_line_wrap (GTK_LABEL (widget), TRUE);
gtk_label_set_use_markup (GTK_LABEL (widget), TRUE);
gtk_misc_set_padding (GTK_MISC (widget), 12, 0);
gtk_box_pack_start (GTK_BOX (vbox), widget, FALSE, FALSE, 12);
} /* if */
hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 6);
widget = gtk_label_new_with_mnemonic (label);
gtk_box_pack_start (GTK_BOX (hbox), widget, FALSE, FALSE, 0);
gtk_misc_set_padding (GTK_MISC (widget), 12, 0);
entry = gtk_entry_new ();
gtk_box_pack_start (GTK_BOX (hbox), entry, FALSE, TRUE, 0);
gtk_entry_set_width_chars (GTK_ENTRY (entry), DBL_DIG);
gtk_entry_set_activates_default (GTK_ENTRY (entry), TRUE);
g_snprintf (text, sizeof(text), "%.*G", cfgGetDesktopPrefs()->outprec, *pResult);
gtk_entry_set_text (GTK_ENTRY (entry), text);
GLADE_HOOKUP_OBJECT (dialog, entry, "entry");
gtk_label_set_mnemonic_widget (GTK_LABEL (widget), entry);
vbox = GTK_DIALOG (dialog)->action_area;
gtk_button_box_set_layout (GTK_BUTTON_BOX (vbox), GTK_BUTTONBOX_END);
widget = gtk_button_new_from_stock (GTK_STOCK_CANCEL);
gtk_dialog_add_action_widget (GTK_DIALOG (dialog), widget, GTK_RESPONSE_CANCEL);
GTK_WIDGET_SET_FLAGS (widget, GTK_CAN_DEFAULT);
widget = gtk_button_new_from_stock (GTK_STOCK_OK);
gtk_dialog_add_action_widget (GTK_DIALOG (dialog), widget, GTK_RESPONSE_OK);
GTK_WIDGET_SET_FLAGS (widget, GTK_CAN_DEFAULT);
gtk_widget_grab_default (widget);
gtk_widget_show_all (dialog);
do
{
if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_CANCEL)
{
GLADE_HOOKUP_OBJECT_NO_REF (dialog, NULL, "entry");
gtk_widget_destroy (dialog);
return FALSE;
} /* if */
ret = dlgGetDouble (dialog, "entry", -DBL_MAX, DBL_MAX, 1.0, pResult);
} while (!ret);
GLADE_HOOKUP_OBJECT_NO_REF (dialog, NULL, "entry");
gtk_widget_destroy (dialog);
return ret;
} /* dlgPopupDouble() */
/******************************************************************************/
/* END OF FILE */
/******************************************************************************/
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