/* LIBGIMP - The GIMP Library * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball * * gimpnumberpairentry.c * Copyright (C) 2006 Simon Budig * Copyright (C) 2007 Sven Neumann * Copyright (C) 2007 Martin Nordholts * * This library is free software: you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 3 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library. If not, see * . */ #include "config.h" #include #include #include #include #include "libgimpmath/gimpmath.h" #include "gimpwidgetstypes.h" #include "gimpicons.h" #include "gimpnumberpairentry.h" /** * SECTION: gimpnumberpairentry * @title: GimpNumberPairEntry * @short_description: A #GtkEntry subclass to enter ratios. * * A #GtkEntry subclass to enter ratios. **/ #define EPSILON 0.000001 enum { NUMBERS_CHANGED, RATIO_CHANGED, LAST_SIGNAL }; enum { PROP_0, PROP_LEFT_NUMBER, PROP_RIGHT_NUMBER, PROP_DEFAULT_LEFT_NUMBER, PROP_DEFAULT_RIGHT_NUMBER, PROP_USER_OVERRIDE, PROP_SEPARATORS, PROP_DEFAULT_TEXT, PROP_ALLOW_SIMPLIFICATION, PROP_MIN_VALID_VALUE, PROP_MAX_VALID_VALUE, PROP_RATIO, PROP_ASPECT }; typedef enum { PARSE_VALID, PARSE_CLEAR, PARSE_INVALID } ParseResult; typedef struct { /* The current number pair displayed in the widget. */ gdouble left_number; gdouble right_number; /* What number pair that should be displayed when not in user_override mode. */ gdouble default_left_number; gdouble default_right_number; /* Whether or not the current value in the entry has been explicitly * set by the user. */ gboolean user_override; /* Is the font style currently set to ITALIC or NORMAL ? */ gboolean font_italic; /* What separators that are valid when parsing input, e.g. when the * widget is used for aspect ratio, valid separators are typically * ':' and '/'. */ gunichar *separators; glong num_separators; /* A string to be shown in the entry when in automatic mode */ gchar *default_text; /* Whether or to not to divide the numbers with the greatest common * divisor when input ends in '='. */ gboolean allow_simplification; /* What range of values considered valid. */ gdouble min_valid_value; gdouble max_valid_value; } GimpNumberPairEntryPrivate; #define GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE(obj) \ ((GimpNumberPairEntryPrivate *) ((GimpNumberPairEntry *) (obj))->priv) static void gimp_number_pair_entry_finalize (GObject *entry); static gboolean gimp_number_pair_entry_valid_separator (GimpNumberPairEntry *entry, gunichar candidate); static void gimp_number_pair_entry_ratio_to_fraction (gdouble ratio, gdouble *numerator, gdouble *denominator); static void gimp_number_pair_entry_set_property (GObject *object, guint property_id, const GValue *value, GParamSpec *pspec); static void gimp_number_pair_entry_get_property (GObject *object, guint property_id, GValue *value, GParamSpec *pspec); static void gimp_number_pair_entry_changed (GimpNumberPairEntry *entry); static void gimp_number_pair_entry_icon_press (GimpNumberPairEntry *entry); static gboolean gimp_number_pair_entry_events (GtkWidget *widget, GdkEvent *event); static void gimp_number_pair_entry_update_text (GimpNumberPairEntry *entry); static ParseResult gimp_number_pair_entry_parse_text (GimpNumberPairEntry *entry, const gchar *text, gdouble *left_value, gdouble *right_value); static gboolean gimp_number_pair_entry_numbers_in_range (GimpNumberPairEntry *entry, gdouble left_number, gdouble right_number); static gchar * gimp_number_pair_entry_strdup_number_pair_string (GimpNumberPairEntry *entry, gdouble left_number, gdouble right_number); G_DEFINE_TYPE_WITH_PRIVATE (GimpNumberPairEntry, gimp_number_pair_entry, GTK_TYPE_ENTRY) #define parent_class gimp_number_pair_entry_parent_class /* What the user shall end the input with when simplification is desired. */ #define SIMPLIFICATION_CHAR ((gunichar) '=') #define DEFAULT_SEPARATOR ((gunichar) ',') static guint entry_signals[LAST_SIGNAL] = { 0 }; static void gimp_number_pair_entry_class_init (GimpNumberPairEntryClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); entry_signals[NUMBERS_CHANGED] = g_signal_new ("numbers-changed", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GimpNumberPairEntryClass, numbers_changed), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); entry_signals[RATIO_CHANGED] = g_signal_new ("ratio-changed", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GimpNumberPairEntryClass, ratio_changed), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); object_class->set_property = gimp_number_pair_entry_set_property; object_class->get_property = gimp_number_pair_entry_get_property; object_class->finalize = gimp_number_pair_entry_finalize; klass->numbers_changed = NULL; klass->ratio_changed = NULL; g_object_class_install_property (object_class, PROP_LEFT_NUMBER, g_param_spec_double ("left-number", "Left number", "The left number", G_MINDOUBLE, G_MAXDOUBLE, 100.0, GIMP_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_RIGHT_NUMBER, g_param_spec_double ("right-number", "Right number", "The right number", G_MINDOUBLE, G_MAXDOUBLE, 100.0, GIMP_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_DEFAULT_LEFT_NUMBER, g_param_spec_double ("default-left-number", "Default left number", "The default left number", G_MINDOUBLE, G_MAXDOUBLE, 100.0, GIMP_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_DEFAULT_RIGHT_NUMBER, g_param_spec_double ("default-right-number", "Default right number", "The default right number", G_MINDOUBLE, G_MAXDOUBLE, 100.0, GIMP_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_USER_OVERRIDE, g_param_spec_boolean ("user-override", "User override", "Whether the widget is in 'user override' mode", FALSE, GIMP_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_SEPARATORS, g_param_spec_string ("separators", "Separators", "A string of valid separators", NULL, GIMP_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); g_object_class_install_property (object_class, PROP_DEFAULT_TEXT, g_param_spec_string ("default-text", "Default text", "String to show when in automatic mode", NULL, GIMP_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_ALLOW_SIMPLIFICATION, g_param_spec_boolean ("allow-simplification", "Allow simplification", "Whether to allow simplification", FALSE, GIMP_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_MIN_VALID_VALUE, g_param_spec_double ("min-valid-value", "Min valid value", "Minimum value valid when parsing input", G_MINDOUBLE, G_MAXDOUBLE, G_MINDOUBLE, GIMP_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_MAX_VALID_VALUE, g_param_spec_double ("max-valid-value", "Max valid value", "Maximum value valid when parsing input", G_MINDOUBLE, G_MAXDOUBLE, G_MAXDOUBLE, GIMP_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_RATIO, g_param_spec_double ("ratio", "Ratio", "The value as ratio", G_MINDOUBLE, G_MAXDOUBLE, 1.0, GIMP_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_ASPECT, g_param_spec_enum ("aspect", "Aspect", "The value as aspect", GIMP_TYPE_ASPECT_TYPE, GIMP_ASPECT_SQUARE, GIMP_PARAM_READWRITE)); } static void gimp_number_pair_entry_init (GimpNumberPairEntry *entry) { GimpNumberPairEntryPrivate *priv; entry->priv = gimp_number_pair_entry_get_instance_private (entry); priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); priv->left_number = 1.0; priv->right_number = 1.0; priv->default_left_number = 1.0; priv->default_right_number = 1.0; priv->user_override = FALSE; priv->font_italic = FALSE; priv->separators = NULL; priv->default_text = NULL; priv->num_separators = 0; priv->allow_simplification = FALSE; priv->min_valid_value = G_MINDOUBLE; priv->max_valid_value = G_MAXDOUBLE; g_signal_connect (entry, "changed", G_CALLBACK (gimp_number_pair_entry_changed), NULL); g_signal_connect (entry, "icon-press", G_CALLBACK (gimp_number_pair_entry_icon_press), NULL); g_signal_connect (entry, "focus-out-event", G_CALLBACK (gimp_number_pair_entry_events), NULL); g_signal_connect (entry, "key-press-event", G_CALLBACK (gimp_number_pair_entry_events), NULL); gtk_widget_set_direction (GTK_WIDGET (entry), GTK_TEXT_DIR_LTR); gtk_entry_set_icon_from_icon_name (GTK_ENTRY (entry), GTK_ENTRY_ICON_SECONDARY, GIMP_ICON_EDIT_CLEAR); } static void gimp_number_pair_entry_finalize (GObject *object) { GimpNumberPairEntryPrivate *priv; priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (object); g_clear_pointer (&priv->separators, g_free); priv->num_separators = 0; g_clear_pointer (&priv->default_text, g_free); G_OBJECT_CLASS (parent_class)->finalize (object); } /** * gimp_number_pair_entry_new: * @separators: The allowed separators. * @allow_simplification: Whether to do simplification on the entered term. * @min_valid_value: The minimum allowed result value. * @max_valid_value: The maximum allowed result value. * * Creates a new #GimpNumberPairEntry widget, which is a GtkEntry that * accepts two numbers separated by a separator. Typical input example * with a 'x' separator: "377x233". * * The widget supports simplification of the entered ratio when the * input ends in '=', if "allow-simplification" is TRUE. * * The "separators" property contains a string of characters valid as * separators when parsing input. The first separator is used when * displaying the current values. * * It is possible to specify what range of values that shall be * considered as valid when parsing user input, by changing * "min-valid-value" and "max-valid-value". * * The first separator of @separators is used to display the current * value. * * Return value: The new #GimpNumberPairEntry widget. * * Since: 2.4 **/ GtkWidget * gimp_number_pair_entry_new (const gchar *separators, gboolean allow_simplification, gdouble min_valid_value, gdouble max_valid_value) { return g_object_new (GIMP_TYPE_NUMBER_PAIR_ENTRY, "separators", separators, "allow-simplification", allow_simplification, "min-valid-value", min_valid_value, "max-valid-value", max_valid_value, NULL); } static void gimp_number_pair_entry_ratio_to_fraction (gdouble ratio, gdouble *numerator, gdouble *denominator) { gdouble remainder, next_cf; gint p0, p1, p2; gint q0, q1, q2; /* calculate the continued fraction to approximate the desired ratio */ p0 = 1; q0 = 0; p1 = floor (ratio); q1 = 1; remainder = ratio - p1; while (fabs (remainder) >= 0.0001 && fabs (((gdouble) p1 / q1) - ratio) > 0.0001) { remainder = 1.0 / remainder; next_cf = floor (remainder); p2 = next_cf * p1 + p0; q2 = next_cf * q1 + q0; /* remember the last two fractions */ p0 = p1; q0 = q1; p1 = p2; q1 = q2; remainder = remainder - next_cf; } /* only use the calculated fraction if it is "reasonable" */ if (p1 < 1000 && q1 < 1000) { *numerator = p1; *denominator = q1; } else { *numerator = ratio; *denominator = 1.0; } } /** * gimp_number_pair_entry_set_ratio: * @entry: A #GimpNumberPairEntry widget. * @ratio: Ratio to set in the widget. * * Sets the numbers of the #GimpNumberPairEntry to have the desired * ratio. If the new ratio is different than the previous ratio, the * "ratio-changed" signal is emitted. * * An attempt is made to convert the decimal number into a fraction * with left_number and right_number < 1000. * * Since: 2.4 **/ void gimp_number_pair_entry_set_ratio (GimpNumberPairEntry *entry, gdouble ratio) { gdouble numerator; gdouble denominator; g_return_if_fail (GIMP_IS_NUMBER_PAIR_ENTRY (entry)); gimp_number_pair_entry_ratio_to_fraction (ratio, &numerator, &denominator); gimp_number_pair_entry_set_values (entry, numerator, denominator); } /** * gimp_number_pair_entry_get_ratio: * @entry: A #GimpNumberPairEntry widget. * * Retrieves the ratio of the numbers displayed by a #GimpNumberPairEntry. * * Returns: The ratio value. * * Since: 2.4 **/ gdouble gimp_number_pair_entry_get_ratio (GimpNumberPairEntry *entry) { GimpNumberPairEntryPrivate *priv; g_return_val_if_fail (GIMP_IS_NUMBER_PAIR_ENTRY (entry), 1.0); priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); return priv->left_number / priv->right_number; } /** * gimp_number_pair_entry_set_values: * @entry: A #GimpNumberPairEntry widget. * @left: Left number in the entry. * @right: Right number in the entry. * * Forces setting the numbers displayed by a #GimpNumberPairEntry, * ignoring if the user has set his/her own value. The state of * user-override will not be changed. * * Since: 2.4 **/ void gimp_number_pair_entry_set_values (GimpNumberPairEntry *entry, gdouble left, gdouble right) { GimpNumberPairEntryPrivate *priv; GimpAspectType old_aspect; gdouble old_ratio; gdouble old_left_number; gdouble old_right_number; gboolean numbers_changed = FALSE; gboolean ratio_changed = FALSE; g_return_if_fail (GIMP_IS_NUMBER_PAIR_ENTRY (entry)); priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); /* Store current values */ old_left_number = priv->left_number; old_right_number = priv->right_number; old_ratio = gimp_number_pair_entry_get_ratio (entry); old_aspect = gimp_number_pair_entry_get_aspect (entry); /* Freeze notification */ g_object_freeze_notify (G_OBJECT (entry)); /* Set the new numbers and update the entry */ priv->left_number = left; priv->right_number = right; g_object_notify (G_OBJECT (entry), "left-number"); g_object_notify (G_OBJECT (entry), "right-number"); gimp_number_pair_entry_update_text (entry); /* Find out what has changed */ if (fabs (old_ratio - gimp_number_pair_entry_get_ratio (entry)) > EPSILON) { g_object_notify (G_OBJECT (entry), "ratio"); ratio_changed = TRUE; if (old_aspect != gimp_number_pair_entry_get_aspect (entry)) g_object_notify (G_OBJECT (entry), "aspect"); } if (old_left_number != priv->left_number || old_right_number != priv->right_number) { numbers_changed = TRUE; } /* Thaw */ g_object_thaw_notify (G_OBJECT (entry)); /* Emit relevant signals */ if (numbers_changed) g_signal_emit (entry, entry_signals[NUMBERS_CHANGED], 0); if (ratio_changed) g_signal_emit (entry, entry_signals[RATIO_CHANGED], 0); } /** * gimp_number_pair_entry_get_values: * @entry: A #GimpNumberPairEntry widget. * @left: Pointer of where to store the left number (may be %NULL). * @right: Pointer of to store the right number (may be %NULL). * * Gets the numbers displayed by a #GimpNumberPairEntry. * * Since: 2.4 **/ void gimp_number_pair_entry_get_values (GimpNumberPairEntry *entry, gdouble *left, gdouble *right) { GimpNumberPairEntryPrivate *priv; g_return_if_fail (GIMP_IS_NUMBER_PAIR_ENTRY (entry)); priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); if (left != NULL) *left = priv->left_number; if (right != NULL) *right = priv->right_number; } /** * gimp_number_pair_entry_set_default_text: * @entry: A #GimpNumberPairEntry widget. * @string: Default string. * * Causes the entry to show a given string when in automatic mode, * instead of the default numbers. The only thing this does is making * the #GimpNumberPairEntry showing this string, the internal state * and API calls are not affected. * * Set the default string to %NULL to display default values as * normal. * * Since: 2.4 */ void gimp_number_pair_entry_set_default_text (GimpNumberPairEntry *entry, const gchar *string) { GimpNumberPairEntryPrivate *priv; g_return_if_fail (GIMP_IS_NUMBER_PAIR_ENTRY (entry)); priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); g_free (priv->default_text); priv->default_text = g_strdup (string); gimp_number_pair_entry_update_text (entry); g_object_notify (G_OBJECT (entry), "default-text"); } /** * gimp_number_pair_entry_get_default_text: * @entry: A #GimpNumberPairEntry widget. * * Returns: the string manually set to be shown, or %NULL if values are * shown in a normal fashion. * * Since: 2.4 */ const gchar * gimp_number_pair_entry_get_default_text (GimpNumberPairEntry *entry) { GimpNumberPairEntryPrivate *priv; g_return_val_if_fail (GIMP_IS_NUMBER_PAIR_ENTRY (entry), NULL); priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); return priv->default_text; } /** * gimp_number_pair_entry_set_aspect: * @entry: A #GimpNumberPairEntry widget. * @aspect: The new aspect. * * Sets the aspect of the ratio by swapping the left_number and * right_number if necessary (or setting them to 1.0 in case that * @aspect is %GIMP_ASPECT_SQUARE). * * Since: 2.4 **/ void gimp_number_pair_entry_set_aspect (GimpNumberPairEntry *entry, GimpAspectType aspect) { GimpNumberPairEntryPrivate *priv; g_return_if_fail (GIMP_IS_NUMBER_PAIR_ENTRY (entry)); if (gimp_number_pair_entry_get_aspect (entry) == aspect) return; priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); switch (aspect) { case GIMP_ASPECT_SQUARE: gimp_number_pair_entry_set_values (entry, priv->left_number, priv->left_number); break; case GIMP_ASPECT_LANDSCAPE: case GIMP_ASPECT_PORTRAIT: gimp_number_pair_entry_set_values (entry, priv->right_number, priv->left_number); break; } } /** * gimp_number_pair_entry_get_aspect: * @entry: A #GimpNumberPairEntry widget. * * Gets the aspect of the ratio displayed by a #GimpNumberPairEntry. * * Returns: The entry's current aspect. * * Since: 2.4 **/ GimpAspectType gimp_number_pair_entry_get_aspect (GimpNumberPairEntry *entry) { GimpNumberPairEntryPrivate *priv; g_return_val_if_fail (GIMP_IS_NUMBER_PAIR_ENTRY (entry), GIMP_ASPECT_SQUARE); priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); if (priv->left_number > priv->right_number) { return GIMP_ASPECT_LANDSCAPE; } else if (priv->left_number < priv->right_number) { return GIMP_ASPECT_PORTRAIT; } else { return GIMP_ASPECT_SQUARE; } } static void gimp_number_pair_entry_modify_font (GimpNumberPairEntry *entry, gboolean italic) { GimpNumberPairEntryPrivate *priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); GtkRcStyle *rc_style; if (priv->font_italic == italic) return; rc_style = gtk_widget_get_modifier_style (GTK_WIDGET (entry)); if (! rc_style->font_desc) { PangoContext *context; PangoFontDescription *font_desc; context = gtk_widget_get_pango_context (GTK_WIDGET (entry)); font_desc = pango_context_get_font_description (context); rc_style->font_desc = pango_font_description_copy (font_desc); } pango_font_description_set_style (rc_style->font_desc, italic ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL); gtk_widget_modify_style (GTK_WIDGET (entry), rc_style); gtk_entry_set_icon_sensitive (GTK_ENTRY (entry), GTK_ENTRY_ICON_SECONDARY, ! italic); priv->font_italic = italic; } /** * gimp_number_pair_entry_set_user_override: * @entry: A #GimpNumberPairEntry widget. * @user_override: %TRUE sets the entry in user overridden mode, * %FALSE disables. * * When the entry is not in user overridden mode, the values will * change when the default values are changed. When in user overridden * mode, setting default values will not affect the active values. * * Since: 2.4 **/ void gimp_number_pair_entry_set_user_override (GimpNumberPairEntry *entry, gboolean user_override) { GimpNumberPairEntryPrivate *priv; g_return_if_fail (GIMP_IS_NUMBER_PAIR_ENTRY (entry)); priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); priv->user_override = user_override; if (! user_override) { gimp_number_pair_entry_set_default_values (entry, priv->default_left_number, priv->default_right_number); } gimp_number_pair_entry_modify_font (entry, ! user_override); g_object_notify (G_OBJECT (entry), "user-override"); } /** * gimp_number_pair_entry_get_user_override: * @entry: A #GimpNumberPairEntry widget. * * Returns: Whether or not the the widget is in user overridden mode. * * Since: 2.4 **/ gboolean gimp_number_pair_entry_get_user_override (GimpNumberPairEntry *entry) { GimpNumberPairEntryPrivate *priv; g_return_val_if_fail (GIMP_IS_NUMBER_PAIR_ENTRY (entry), FALSE); priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); return priv->user_override; } static void gimp_number_pair_entry_changed (GimpNumberPairEntry *entry) { gimp_number_pair_entry_modify_font (entry, FALSE); } static void gimp_number_pair_entry_icon_press (GimpNumberPairEntry *entry) { gimp_number_pair_entry_set_user_override (entry, FALSE); gtk_editable_set_position (GTK_EDITABLE (entry), -1); } static gboolean gimp_number_pair_entry_events (GtkWidget *widget, GdkEvent *event) { GimpNumberPairEntry *entry; GimpNumberPairEntryPrivate *priv; gboolean force_user_override; entry = GIMP_NUMBER_PAIR_ENTRY (widget); priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); force_user_override = FALSE; switch (event->type) { case GDK_KEY_PRESS: { GdkEventKey *kevent = (GdkEventKey *) event; if (kevent->keyval != GDK_KEY_Return && kevent->keyval != GDK_KEY_KP_Enter && kevent->keyval != GDK_KEY_ISO_Enter) break; /* If parsing was done due to widgets focus being lost, we only change * to user-override mode if the values differ from the default ones. If * Return was pressed however, we always switch to user-override mode. */ force_user_override = TRUE; } /* Fall through */ case GDK_FOCUS_CHANGE: { const gchar *text; ParseResult parse_result; gdouble left_value; gdouble right_value; text = gtk_entry_get_text (GTK_ENTRY (entry)); parse_result = gimp_number_pair_entry_parse_text (entry, text, &left_value, &right_value); switch (parse_result) { case PARSE_VALID: { if (priv->left_number != left_value || priv->right_number != right_value || force_user_override) { gimp_number_pair_entry_set_values (entry, left_value, right_value); gimp_number_pair_entry_set_user_override (entry, TRUE); } } break; case PARSE_CLEAR: gimp_number_pair_entry_set_user_override (entry, FALSE); break; default: break; } /* Make sure the entry text is up to date */ gimp_number_pair_entry_update_text (entry); gtk_editable_set_position (GTK_EDITABLE (entry), -1); } break; default: break; } return FALSE; } /** * gimp_number_pair_entry_strdup_number_pair_string: * @entry: * @left_number: * @right_number: * * Returns: allocated data, must be g_free:d. **/ static gchar * gimp_number_pair_entry_strdup_number_pair_string (GimpNumberPairEntry *entry, gdouble left_number, gdouble right_number) { GimpNumberPairEntryPrivate *priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); gchar sep[8]; gint len; if (priv->num_separators > 0) len = g_unichar_to_utf8 (priv->separators[0], sep); else len = g_unichar_to_utf8 (DEFAULT_SEPARATOR, sep); sep[len] = '\0'; return g_strdup_printf ("%g%s%g", left_number, sep, right_number); } static void gimp_number_pair_entry_update_text (GimpNumberPairEntry *entry) { GimpNumberPairEntryPrivate *priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); gchar *buffer; if (! priv->user_override && priv->default_text != NULL) { /* Instead of the numbers, show the string explicitly set by a * client to show when in automatic mode. */ buffer = g_strdup (priv->default_text); } else { buffer = gimp_number_pair_entry_strdup_number_pair_string (entry, priv->left_number, priv->right_number); } g_signal_handlers_block_by_func (entry, gimp_number_pair_entry_changed, NULL); gtk_entry_set_text (GTK_ENTRY (entry), buffer); g_free (buffer); g_signal_handlers_unblock_by_func (entry, gimp_number_pair_entry_changed, NULL); gimp_number_pair_entry_modify_font (entry, ! priv->user_override); } static gboolean gimp_number_pair_entry_valid_separator (GimpNumberPairEntry *entry, gunichar candidate) { GimpNumberPairEntryPrivate *priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); if (priv->num_separators > 0) { gint i; for (i = 0; i < priv->num_separators; i++) if (priv->separators[i] == candidate) return TRUE; } else if (candidate == DEFAULT_SEPARATOR) { return TRUE; } return FALSE; } static ParseResult gimp_number_pair_entry_parse_text (GimpNumberPairEntry *entry, const gchar *text, gdouble *left_value, gdouble *right_value) { GimpNumberPairEntryPrivate *priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); gdouble new_left_number; gdouble new_right_number; gboolean simplify = FALSE; gchar *end; /* skip over whitespace */ while (g_unichar_isspace (g_utf8_get_char (text))) text = g_utf8_next_char (text); /* check if clear */ if (! *text) return PARSE_CLEAR; /* try to parse a number */ new_left_number = strtod (text, &end); if (end == text) return PARSE_INVALID; else text = end; /* skip over whitespace */ while (g_unichar_isspace (g_utf8_get_char (text))) text = g_utf8_next_char (text); /* check for a valid separator */ if (! gimp_number_pair_entry_valid_separator (entry, g_utf8_get_char (text))) return PARSE_INVALID; else text = g_utf8_next_char (text); /* try to parse another number */ new_right_number = strtod (text, &end); if (end == text) return PARSE_INVALID; else text = end; /* skip over whitespace */ while (g_unichar_isspace (g_utf8_get_char (text))) text = g_utf8_next_char (text); /* check for the simplification char */ if (g_utf8_get_char (text) == SIMPLIFICATION_CHAR) { simplify = priv->allow_simplification; text = g_utf8_next_char (text); } /* skip over whitespace */ while (g_unichar_isspace (g_utf8_get_char (text))) text = g_utf8_next_char (text); /* check for trailing garbage */ if (*text) return PARSE_INVALID; if (! gimp_number_pair_entry_numbers_in_range (entry, new_left_number, new_right_number)) return PARSE_INVALID; if (simplify && new_right_number != 0.0) { gimp_number_pair_entry_ratio_to_fraction (new_left_number / new_right_number, left_value, right_value); } else { *left_value = new_left_number; *right_value = new_right_number; } return PARSE_VALID; } static void gimp_number_pair_entry_set_property (GObject *object, guint property_id, const GValue *value, GParamSpec *pspec) { GimpNumberPairEntry *entry = GIMP_NUMBER_PAIR_ENTRY (object); GimpNumberPairEntryPrivate *priv; priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); switch (property_id) { case PROP_LEFT_NUMBER: gimp_number_pair_entry_set_values (entry, g_value_get_double (value), priv->right_number); break; case PROP_RIGHT_NUMBER: gimp_number_pair_entry_set_values (entry, priv->left_number, g_value_get_double (value)); break; case PROP_DEFAULT_LEFT_NUMBER: gimp_number_pair_entry_set_default_values (entry, g_value_get_double (value), priv->default_right_number); break; case PROP_DEFAULT_RIGHT_NUMBER: gimp_number_pair_entry_set_default_values (entry, priv->default_left_number, g_value_get_double (value)); break; case PROP_USER_OVERRIDE: gimp_number_pair_entry_set_user_override (entry, g_value_get_boolean (value)); break; case PROP_SEPARATORS: g_free (priv->separators); priv->num_separators = 0; if (g_value_get_string (value)) priv->separators = g_utf8_to_ucs4 (g_value_get_string (value), -1, NULL, &priv->num_separators, NULL); else priv->separators = NULL; break; case PROP_DEFAULT_TEXT: gimp_number_pair_entry_set_default_text (entry, g_value_get_string (value)); break; case PROP_ALLOW_SIMPLIFICATION: priv->allow_simplification = g_value_get_boolean (value); break; case PROP_MIN_VALID_VALUE: priv->min_valid_value = g_value_get_double (value); break; case PROP_MAX_VALID_VALUE: priv->max_valid_value = g_value_get_double (value); break; case PROP_RATIO: gimp_number_pair_entry_set_ratio (entry, g_value_get_double (value)); break; case PROP_ASPECT: gimp_number_pair_entry_set_aspect (entry, g_value_get_enum (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); break; } } static void gimp_number_pair_entry_get_property (GObject *object, guint property_id, GValue *value, GParamSpec *pspec) { GimpNumberPairEntry *entry = GIMP_NUMBER_PAIR_ENTRY (object); GimpNumberPairEntryPrivate *priv; priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); switch (property_id) { case PROP_LEFT_NUMBER: g_value_set_double (value, priv->left_number); break; case PROP_RIGHT_NUMBER: g_value_set_double (value, priv->right_number); break; case PROP_DEFAULT_LEFT_NUMBER: g_value_set_double (value, priv->default_left_number); break; case PROP_DEFAULT_RIGHT_NUMBER: g_value_set_double (value, priv->default_right_number); break; case PROP_USER_OVERRIDE: g_value_set_boolean (value, priv->user_override); break; case PROP_SEPARATORS: g_value_take_string (value, g_ucs4_to_utf8 (priv->separators, priv->num_separators, NULL, NULL, NULL)); break; case PROP_ALLOW_SIMPLIFICATION: g_value_set_boolean (value, priv->allow_simplification); break; case PROP_DEFAULT_TEXT: g_value_set_string (value, priv->default_text); break; case PROP_MIN_VALID_VALUE: g_value_set_double (value, priv->min_valid_value); break; case PROP_MAX_VALID_VALUE: g_value_set_double (value, priv->max_valid_value); break; case PROP_RATIO: g_value_set_double (value, gimp_number_pair_entry_get_ratio (entry)); break; case PROP_ASPECT: g_value_set_enum (value, gimp_number_pair_entry_get_aspect (entry)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); break; } } /** * gimp_number_pair_entry_set_default_values: * @entry: A #GimpNumberPairEntry widget. * @left: Default left value in the entry. * @right: Default right value in the entry. * * Since: 2.4 **/ void gimp_number_pair_entry_set_default_values (GimpNumberPairEntry *entry, gdouble left, gdouble right) { GimpNumberPairEntryPrivate *priv; g_return_if_fail (GIMP_IS_NUMBER_PAIR_ENTRY (entry)); priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); priv->default_left_number = left; priv->default_right_number = right; if (! priv->user_override) { gimp_number_pair_entry_set_values (entry, priv->default_left_number, priv->default_right_number); } } /** * gimp_number_pair_entry_get_default_values: * @entry: A #GimpNumberPairEntry widget. * @left: Pointer of where to put left value. * @right: Pointer of where to put right value. * * Since: 2.4 **/ void gimp_number_pair_entry_get_default_values (GimpNumberPairEntry *entry, gdouble *left, gdouble *right) { GimpNumberPairEntryPrivate *priv; g_return_if_fail (GIMP_IS_NUMBER_PAIR_ENTRY (entry)); priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); if (left != NULL) *left = priv->default_left_number; if (right != NULL) *right = priv->default_right_number; } static gboolean gimp_number_pair_entry_numbers_in_range (GimpNumberPairEntry *entry, gdouble left_number, gdouble right_number) { GimpNumberPairEntryPrivate *priv = GIMP_NUMBER_PAIR_ENTRY_GET_PRIVATE (entry); return (left_number >= priv->min_valid_value && left_number <= priv->max_valid_value && right_number >= priv->min_valid_value && right_number <= priv->max_valid_value); }