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| -rw-r--r-- | libgimpwidgets/gimpsizeentry.c | 1594 |
1 files changed, 1594 insertions, 0 deletions
diff --git a/libgimpwidgets/gimpsizeentry.c b/libgimpwidgets/gimpsizeentry.c new file mode 100644 index 0000000..497899b --- /dev/null +++ b/libgimpwidgets/gimpsizeentry.c @@ -0,0 +1,1594 @@ +/* LIBGIMP - The GIMP Library + * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball + * + * gimpsizeentry.c + * Copyright (C) 1999-2000 Sven Neumann <sven@gimp.org> + * Michael Natterer <mitch@gimp.org> + * + * 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 + * <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <string.h> + +#include <gegl.h> +#include <gtk/gtk.h> + +#include "libgimpbase/gimpbase.h" + +#include "gimpwidgets.h" + +#include "gimpeevl.h" +#include "gimpsizeentry.h" + + +/** + * SECTION: gimpsizeentry + * @title: GimpSizeEntry + * @short_description: Widget for entering pixel values and resolutions. + * @see_also: #GimpUnit, #GimpUnitComboBox, gimp_coordinates_new() + * + * This widget is used to enter pixel distances/sizes and resolutions. + * + * You can specify the number of fields the widget should provide. For + * each field automatic mappings are performed between the field's + * "reference value" and its "value". + * + * There is a #GimpUnitComboBox right of the entry fields which lets + * you specify the #GimpUnit of the displayed values. + * + * For each field, there can be one or two #GtkSpinButton's to enter + * "value" and "reference value". If you specify @show_refval as + * #FALSE in gimp_size_entry_new() there will be only one + * #GtkSpinButton and the #GimpUnitComboBox will contain an item for + * selecting GIMP_UNIT_PIXEL. + * + * The "reference value" is either of GIMP_UNIT_PIXEL or dpi, + * depending on which #GimpSizeEntryUpdatePolicy you specify in + * gimp_size_entry_new(). The "value" is either the size in pixels + * mapped to the size in a real-world-unit (see #GimpUnit) or the dpi + * value mapped to pixels per real-world-unit. + **/ + + +#define SIZE_MAX_VALUE 500000.0 + +#define GIMP_SIZE_ENTRY_DIGITS(unit) (MIN (gimp_unit_get_digits (unit), 5) + 1) + + +enum +{ + VALUE_CHANGED, + REFVAL_CHANGED, + UNIT_CHANGED, + LAST_SIGNAL +}; + + +struct _GimpSizeEntryField +{ + GimpSizeEntry *gse; + + gdouble resolution; + gdouble lower; + gdouble upper; + + GtkAdjustment *value_adjustment; + GtkWidget *value_spinbutton; + gdouble value; + gdouble min_value; + gdouble max_value; + + GtkAdjustment *refval_adjustment; + GtkWidget *refval_spinbutton; + gdouble refval; + gdouble min_refval; + gdouble max_refval; + gint refval_digits; + + gint stop_recursion; +}; + + +static void gimp_size_entry_finalize (GObject *object); +static void gimp_size_entry_update_value (GimpSizeEntryField *gsef, + gdouble value); +static void gimp_size_entry_value_callback (GtkWidget *widget, + gpointer data); +static void gimp_size_entry_update_refval (GimpSizeEntryField *gsef, + gdouble refval); +static void gimp_size_entry_refval_callback (GtkWidget *widget, + gpointer data); +static void gimp_size_entry_update_unit (GimpSizeEntry *gse, + GimpUnit unit); +static void gimp_size_entry_unit_callback (GtkWidget *widget, + GimpSizeEntry *sizeentry); +static void gimp_size_entry_attach_eevl (GtkSpinButton *spin_button, + GimpSizeEntryField *gsef); +static gint gimp_size_entry_eevl_input_callback (GtkSpinButton *spinner, + gdouble *return_val, + gpointer *data); +static gboolean gimp_size_entry_eevl_unit_resolver (const gchar *ident, + GimpEevlQuantity *factor, + gdouble *offset, + gpointer data); + + +G_DEFINE_TYPE (GimpSizeEntry, gimp_size_entry, GTK_TYPE_TABLE) + +#define parent_class gimp_size_entry_parent_class + +static guint gimp_size_entry_signals[LAST_SIGNAL] = { 0 }; + + +static void +gimp_size_entry_class_init (GimpSizeEntryClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + gimp_size_entry_signals[VALUE_CHANGED] = + g_signal_new ("value-changed", + G_TYPE_FROM_CLASS (klass), + G_SIGNAL_RUN_FIRST, + G_STRUCT_OFFSET (GimpSizeEntryClass, value_changed), + NULL, NULL, + g_cclosure_marshal_VOID__VOID, + G_TYPE_NONE, 0); + + gimp_size_entry_signals[REFVAL_CHANGED] = + g_signal_new ("refval-changed", + G_TYPE_FROM_CLASS (klass), + G_SIGNAL_RUN_FIRST, + G_STRUCT_OFFSET (GimpSizeEntryClass, refval_changed), + NULL, NULL, + g_cclosure_marshal_VOID__VOID, + G_TYPE_NONE, 0); + + gimp_size_entry_signals[UNIT_CHANGED] = + g_signal_new ("unit-changed", + G_TYPE_FROM_CLASS (klass), + G_SIGNAL_RUN_FIRST, + G_STRUCT_OFFSET (GimpSizeEntryClass, unit_changed), + NULL, NULL, + g_cclosure_marshal_VOID__VOID, + G_TYPE_NONE, 0); + + object_class->finalize = gimp_size_entry_finalize; + + klass->value_changed = NULL; + klass->refval_changed = NULL; + klass->unit_changed = NULL; +} + +static void +gimp_size_entry_init (GimpSizeEntry *gse) +{ + gse->fields = NULL; + gse->number_of_fields = 0; + gse->unitmenu = NULL; + gse->unit = GIMP_UNIT_PIXEL; + gse->menu_show_pixels = TRUE; + gse->menu_show_percent = TRUE; + gse->show_refval = FALSE; + gse->update_policy = GIMP_SIZE_ENTRY_UPDATE_NONE; +} + +static void +gimp_size_entry_finalize (GObject *object) +{ + GimpSizeEntry *gse = GIMP_SIZE_ENTRY (object); + + if (gse->fields) + { + GSList *list; + + for (list = gse->fields; list; list = list->next) + g_slice_free (GimpSizeEntryField, list->data); + + g_slist_free (gse->fields); + gse->fields = NULL; + } + + G_OBJECT_CLASS (parent_class)->finalize (object); +} + +/** + * gimp_size_entry_new: + * @number_of_fields: The number of input fields. + * @unit: The initial unit. + * @unit_format: A printf-like unit-format string as is used with + * gimp_unit_menu_new(). + * @menu_show_pixels: %TRUE if the unit menu should contain an item for + * GIMP_UNIT_PIXEL (ignored if the @update_policy is not + * GIMP_SIZE_ENTRY_UPDATE_NONE). + * @menu_show_percent: %TRUE if the unit menu should contain an item for + * GIMP_UNIT_PERCENT. + * @show_refval: %TRUE if you want an extra "reference value" + * spinbutton per input field. + * @spinbutton_width: The minimal horizontal size of the #GtkSpinButton's. + * @update_policy: How the automatic pixel <-> real-world-unit + * calculations should be done. + * + * Creates a new #GimpSizeEntry widget. + * + * To have all automatic calculations performed correctly, set up the + * widget in the following order: + * + * 1. gimp_size_entry_new() + * + * 2. (for each additional input field) gimp_size_entry_add_field() + * + * 3. gimp_size_entry_set_unit() + * + * For each input field: + * + * 4. gimp_size_entry_set_resolution() + * + * 5. gimp_size_entry_set_refval_boundaries() + * (or gimp_size_entry_set_value_boundaries()) + * + * 6. gimp_size_entry_set_size() + * + * 7. gimp_size_entry_set_refval() (or gimp_size_entry_set_value()) + * + * The #GimpSizeEntry is derived from #GtkTable and will have + * an empty border of one cell width on each side plus an empty column left + * of the #GimpUnitComboBox to allow the caller to add labels or a + * #GimpChainButton. + * + * Returns: A Pointer to the new #GimpSizeEntry widget. + **/ +GtkWidget * +gimp_size_entry_new (gint number_of_fields, + GimpUnit unit, + const gchar *unit_format, + gboolean menu_show_pixels, + gboolean menu_show_percent, + gboolean show_refval, + gint spinbutton_width, + GimpSizeEntryUpdatePolicy update_policy) +{ + GimpSizeEntry *gse; + GimpUnitStore *store; + gint i; + + g_return_val_if_fail ((number_of_fields >= 0) && (number_of_fields <= 16), + NULL); + + gse = g_object_new (GIMP_TYPE_SIZE_ENTRY, NULL); + + gse->number_of_fields = number_of_fields; + gse->unit = unit; + gse->show_refval = show_refval; + gse->update_policy = update_policy; + + gtk_table_resize (GTK_TABLE (gse), + 1 + gse->show_refval + 2, + number_of_fields + 1 + 3); + + /* show the 'pixels' menu entry only if we are a 'size' sizeentry and + * don't have the reference value spinbutton + */ + if ((update_policy == GIMP_SIZE_ENTRY_UPDATE_RESOLUTION) || + (show_refval == TRUE)) + gse->menu_show_pixels = FALSE; + else + gse->menu_show_pixels = menu_show_pixels; + + /* show the 'percent' menu entry only if we are a 'size' sizeentry + */ + if (update_policy == GIMP_SIZE_ENTRY_UPDATE_RESOLUTION) + gse->menu_show_percent = FALSE; + else + gse->menu_show_percent = menu_show_percent; + + for (i = 0; i < number_of_fields; i++) + { + GimpSizeEntryField *gsef = g_slice_new0 (GimpSizeEntryField); + gint digits; + + gse->fields = g_slist_append (gse->fields, gsef); + + gsef->gse = gse; + gsef->resolution = 1.0; /* just to avoid division by zero */ + gsef->lower = 0.0; + gsef->upper = 100.0; + gsef->value = 0; + gsef->min_value = 0; + gsef->max_value = SIZE_MAX_VALUE; + gsef->refval_adjustment = NULL; + gsef->value_adjustment = NULL; + gsef->refval = 0; + gsef->min_refval = 0; + gsef->max_refval = SIZE_MAX_VALUE; + gsef->refval_digits = + (update_policy == GIMP_SIZE_ENTRY_UPDATE_SIZE) ? 0 : 3; + gsef->stop_recursion = 0; + + digits = ((unit == GIMP_UNIT_PIXEL) ? + gsef->refval_digits : ((unit == GIMP_UNIT_PERCENT) ? + 2 : GIMP_SIZE_ENTRY_DIGITS (unit))); + + gsef->value_adjustment = (GtkAdjustment *) + gtk_adjustment_new (gsef->value, + gsef->min_value, gsef->max_value, + 1.0, 10.0, 0.0); + gsef->value_spinbutton = gimp_spin_button_new (gsef->value_adjustment, + 1.0, digits); + gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (gsef->value_spinbutton), + TRUE); + + gimp_size_entry_attach_eevl (GTK_SPIN_BUTTON (gsef->value_spinbutton), + gsef); + + if (spinbutton_width > 0) + { + if (spinbutton_width < 17) + gtk_entry_set_width_chars (GTK_ENTRY (gsef->value_spinbutton), + spinbutton_width); + else + gtk_widget_set_size_request (gsef->value_spinbutton, + spinbutton_width, -1); + } + + gtk_table_attach_defaults (GTK_TABLE (gse), gsef->value_spinbutton, + i+1, i+2, + gse->show_refval+1, gse->show_refval+2); + g_signal_connect (gsef->value_adjustment, "value-changed", + G_CALLBACK (gimp_size_entry_value_callback), + gsef); + + gtk_widget_show (gsef->value_spinbutton); + + if (gse->show_refval) + { + gsef->refval_adjustment = (GtkAdjustment *) + gtk_adjustment_new (gsef->refval, + gsef->min_refval, gsef->max_refval, + 1.0, 10.0, 0.0); + gsef->refval_spinbutton = gimp_spin_button_new (gsef->refval_adjustment, + 1.0, + gsef->refval_digits); + gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (gsef->refval_spinbutton), + TRUE); + + gtk_widget_set_size_request (gsef->refval_spinbutton, + spinbutton_width, -1); + gtk_table_attach_defaults (GTK_TABLE (gse), gsef->refval_spinbutton, + i + 1, i + 2, 1, 2); + g_signal_connect (gsef->refval_adjustment, + "value-changed", + G_CALLBACK (gimp_size_entry_refval_callback), + gsef); + + gtk_widget_show (gsef->refval_spinbutton); + } + + if (gse->menu_show_pixels && (unit == GIMP_UNIT_PIXEL) && + ! gse->show_refval) + gtk_spin_button_set_digits (GTK_SPIN_BUTTON (gsef->value_spinbutton), + gsef->refval_digits); + } + + store = gimp_unit_store_new (gse->number_of_fields); + gimp_unit_store_set_has_pixels (store, gse->menu_show_pixels); + gimp_unit_store_set_has_percent (store, gse->menu_show_percent); + + if (unit_format) + { + gchar *short_format = g_strdup (unit_format); + gchar *p; + + p = strstr (short_format, "%s"); + if (p) + strcpy (p, "%a"); + + p = strstr (short_format, "%p"); + if (p) + strcpy (p, "%a"); + + g_object_set (store, + "short-format", short_format, + "long-format", unit_format, + NULL); + + g_free (short_format); + } + + gse->unitmenu = gimp_unit_combo_box_new_with_model (store); + g_object_unref (store); + + gimp_unit_combo_box_set_active (GIMP_UNIT_COMBO_BOX (gse->unitmenu), unit); + + gtk_table_attach (GTK_TABLE (gse), gse->unitmenu, + i+2, i+3, + gse->show_refval+1, gse->show_refval+2, + GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0); + g_signal_connect (gse->unitmenu, "changed", + G_CALLBACK (gimp_size_entry_unit_callback), + gse); + gtk_widget_show (gse->unitmenu); + + return GTK_WIDGET (gse); +} + + +/** + * gimp_size_entry_add_field: + * @gse: The sizeentry you want to add a field to. + * @value_spinbutton: The spinbutton to display the field's value. + * @refval_spinbutton: The spinbutton to display the field's reference value. + * + * Adds an input field to the #GimpSizeEntry. + * + * The new input field will have the index 0. If you specified @show_refval + * as %TRUE in gimp_size_entry_new() you have to pass an additional + * #GtkSpinButton to hold the reference value. If @show_refval was %FALSE, + * @refval_spinbutton will be ignored. + **/ +void +gimp_size_entry_add_field (GimpSizeEntry *gse, + GtkSpinButton *value_spinbutton, + GtkSpinButton *refval_spinbutton) +{ + GimpSizeEntryField *gsef; + gint digits; + + g_return_if_fail (GIMP_IS_SIZE_ENTRY (gse)); + g_return_if_fail (GTK_IS_SPIN_BUTTON (value_spinbutton)); + + if (gse->show_refval) + { + g_return_if_fail (GTK_IS_SPIN_BUTTON (refval_spinbutton)); + } + + gsef = g_slice_new0 (GimpSizeEntryField); + + gse->fields = g_slist_prepend (gse->fields, gsef); + gse->number_of_fields++; + + gsef->gse = gse; + gsef->resolution = 1.0; /* just to avoid division by zero */ + gsef->lower = 0.0; + gsef->upper = 100.0; + gsef->value = 0; + gsef->min_value = 0; + gsef->max_value = SIZE_MAX_VALUE; + gsef->refval = 0; + gsef->min_refval = 0; + gsef->max_refval = SIZE_MAX_VALUE; + gsef->refval_digits = + (gse->update_policy == GIMP_SIZE_ENTRY_UPDATE_SIZE) ? 0 : 3; + gsef->stop_recursion = 0; + + gsef->value_adjustment = gtk_spin_button_get_adjustment (value_spinbutton); + gsef->value_spinbutton = GTK_WIDGET (value_spinbutton); + g_signal_connect (gsef->value_adjustment, "value-changed", + G_CALLBACK (gimp_size_entry_value_callback), + gsef); + + gimp_size_entry_attach_eevl (GTK_SPIN_BUTTON (gsef->value_spinbutton), + gsef); + + if (gse->show_refval) + { + gsef->refval_adjustment = gtk_spin_button_get_adjustment (refval_spinbutton); + gsef->refval_spinbutton = GTK_WIDGET (refval_spinbutton); + g_signal_connect (gsef->refval_adjustment, "value-changed", + G_CALLBACK (gimp_size_entry_refval_callback), + gsef); + } + + digits = ((gse->unit == GIMP_UNIT_PIXEL) ? gsef->refval_digits : + (gse->unit == GIMP_UNIT_PERCENT) ? 2 : + GIMP_SIZE_ENTRY_DIGITS (gse->unit)); + + gtk_spin_button_set_digits (GTK_SPIN_BUTTON (value_spinbutton), digits); + + if (gse->menu_show_pixels && + !gse->show_refval && + (gse->unit == GIMP_UNIT_PIXEL)) + { + gtk_spin_button_set_digits (GTK_SPIN_BUTTON (gsef->value_spinbutton), + gsef->refval_digits); + } +} + +/** + * gimp_size_entry_attach_label: + * @gse: The sizeentry you want to add a label to. + * @text: The text of the label. + * @row: The row where the label will be attached. + * @column: The column where the label will be attached. + * @alignment: The horizontal alignment of the label. + * + * Attaches a #GtkLabel to the #GimpSizeEntry (which is a #GtkTable). + * + * Returns: A pointer to the new #GtkLabel widget. + **/ +GtkWidget * +gimp_size_entry_attach_label (GimpSizeEntry *gse, + const gchar *text, + gint row, + gint column, + gfloat alignment) +{ + GtkWidget *label; + + g_return_val_if_fail (GIMP_IS_SIZE_ENTRY (gse), NULL); + g_return_val_if_fail (text != NULL, NULL); + + label = gtk_label_new_with_mnemonic (text); + + if (column == 0) + { + GList *children; + GList *list; + + children = gtk_container_get_children (GTK_CONTAINER (gse)); + + for (list = children; list; list = g_list_next (list)) + { + GtkWidget *child = list->data; + gint left_attach; + gint top_attach; + + gtk_container_child_get (GTK_CONTAINER (gse), child, + "left-attach", &left_attach, + "top-attach", &top_attach, + NULL); + + if (left_attach == 1 && top_attach == row) + { + gtk_label_set_mnemonic_widget (GTK_LABEL (label), child); + break; + } + } + + g_list_free (children); + } + + gtk_label_set_xalign (GTK_LABEL (label), alignment); + + gtk_table_attach (GTK_TABLE (gse), label, column, column+1, row, row+1, + GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0); + gtk_widget_show (label); + + return label; +} + + +/** + * gimp_size_entry_set_resolution: + * @gse: The sizeentry you want to set a resolution for. + * @field: The index of the field you want to set the resolution for. + * @resolution: The new resolution (in dpi) for the chosen @field. + * @keep_size: %TRUE if the @field's size in pixels should stay the same. + * %FALSE if the @field's size in units should stay the same. + * + * Sets the resolution (in dpi) for field # @field of the #GimpSizeEntry. + * + * The @resolution passed will be clamped to fit in + * [#GIMP_MIN_RESOLUTION..#GIMP_MAX_RESOLUTION]. + * + * This function does nothing if the #GimpSizeEntryUpdatePolicy specified in + * gimp_size_entry_new() doesn't equal to #GIMP_SIZE_ENTRY_UPDATE_SIZE. + **/ +void +gimp_size_entry_set_resolution (GimpSizeEntry *gse, + gint field, + gdouble resolution, + gboolean keep_size) +{ + GimpSizeEntryField *gsef; + gfloat val; + + g_return_if_fail (GIMP_IS_SIZE_ENTRY (gse)); + g_return_if_fail ((field >= 0) && (field < gse->number_of_fields)); + + resolution = CLAMP (resolution, GIMP_MIN_RESOLUTION, GIMP_MAX_RESOLUTION); + + gsef = (GimpSizeEntryField*) g_slist_nth_data (gse->fields, field); + gsef->resolution = resolution; + + val = gsef->value; + + gsef->stop_recursion = 0; + gimp_size_entry_set_refval_boundaries (gse, field, + gsef->min_refval, gsef->max_refval); + + if (! keep_size) + gimp_size_entry_set_value (gse, field, val); +} + + +/** + * gimp_size_entry_set_size: + * @gse: The sizeentry you want to set a size for. + * @field: The index of the field you want to set the size for. + * @lower: The reference value which will be treated as 0%. + * @upper: The reference value which will be treated as 100%. + * + * Sets the pixel values for field # @field of the #GimpSizeEntry + * which will be treated as 0% and 100%. + * + * These values will be used if you specified @menu_show_percent as %TRUE + * in gimp_size_entry_new() and the user has selected GIMP_UNIT_PERCENT in + * the #GimpSizeEntry's #GimpUnitComboBox. + * + * This function does nothing if the #GimpSizeEntryUpdatePolicy specified in + * gimp_size_entry_new() doesn't equal to GIMP_SIZE_ENTRY_UPDATE_SIZE. + **/ +void +gimp_size_entry_set_size (GimpSizeEntry *gse, + gint field, + gdouble lower, + gdouble upper) +{ + GimpSizeEntryField *gsef; + + g_return_if_fail (GIMP_IS_SIZE_ENTRY (gse)); + g_return_if_fail ((field >= 0) && (field < gse->number_of_fields)); + g_return_if_fail (lower <= upper); + + gsef = (GimpSizeEntryField*) g_slist_nth_data (gse->fields, field); + gsef->lower = lower; + gsef->upper = upper; + + gimp_size_entry_set_refval (gse, field, gsef->refval); +} + + +/** + * gimp_size_entry_set_value_boundaries: + * @gse: The sizeentry you want to set value boundaries for. + * @field: The index of the field you want to set value boundaries for. + * @lower: The new lower boundary of the value of the chosen @field. + * @upper: The new upper boundary of the value of the chosen @field. + * + * Limits the range of possible values which can be entered in field # @field + * of the #GimpSizeEntry. + * + * The current value of the @field will be clamped to fit in the @field's + * new boundaries. + * + * NOTE: In most cases you won't be interested in this function because the + * #GimpSizeEntry's purpose is to shield the programmer from unit + * calculations. Use gimp_size_entry_set_refval_boundaries() instead. + * Whatever you do, don't mix these calls. A size entry should either + * be clamped by the value or the reference value. + **/ +void +gimp_size_entry_set_value_boundaries (GimpSizeEntry *gse, + gint field, + gdouble lower, + gdouble upper) +{ + GimpSizeEntryField *gsef; + + g_return_if_fail (GIMP_IS_SIZE_ENTRY (gse)); + g_return_if_fail ((field >= 0) && (field < gse->number_of_fields)); + g_return_if_fail (lower <= upper); + + gsef = (GimpSizeEntryField*) g_slist_nth_data (gse->fields, field); + gsef->min_value = lower; + gsef->max_value = upper; + + g_object_freeze_notify (G_OBJECT (gsef->value_adjustment)); + + gtk_adjustment_set_lower (gsef->value_adjustment, gsef->min_value); + gtk_adjustment_set_upper (gsef->value_adjustment, gsef->max_value); + + if (gsef->stop_recursion) /* this is a hack (but useful ;-) */ + { + g_object_thaw_notify (G_OBJECT (gsef->value_adjustment)); + return; + } + + gsef->stop_recursion++; + switch (gsef->gse->update_policy) + { + case GIMP_SIZE_ENTRY_UPDATE_NONE: + break; + + case GIMP_SIZE_ENTRY_UPDATE_SIZE: + switch (gse->unit) + { + case GIMP_UNIT_PIXEL: + gimp_size_entry_set_refval_boundaries (gse, field, + gsef->min_value, + gsef->max_value); + break; + case GIMP_UNIT_PERCENT: + gimp_size_entry_set_refval_boundaries (gse, field, + gsef->lower + + (gsef->upper - gsef->lower) * + gsef->min_value / 100, + gsef->lower + + (gsef->upper - gsef->lower) * + gsef->max_value / 100); + break; + default: + gimp_size_entry_set_refval_boundaries (gse, field, + gsef->min_value * + gsef->resolution / + gimp_unit_get_factor (gse->unit), + gsef->max_value * + gsef->resolution / + gimp_unit_get_factor (gse->unit)); + break; + } + break; + + case GIMP_SIZE_ENTRY_UPDATE_RESOLUTION: + gimp_size_entry_set_refval_boundaries (gse, field, + gsef->min_value * + gimp_unit_get_factor (gse->unit), + gsef->max_value * + gimp_unit_get_factor (gse->unit)); + break; + + default: + break; + } + gsef->stop_recursion--; + + gimp_size_entry_set_value (gse, field, gsef->value); + + g_object_thaw_notify (G_OBJECT (gsef->value_adjustment)); +} + +/** + * gimp_size_entry_get_value: + * @gse: The sizeentry you want to know a value of. + * @field: The index of the field you want to know the value of. + * + * Returns the value of field # @field of the #GimpSizeEntry. + * + * The @value returned is a distance or resolution + * in the #GimpUnit the user has selected in the #GimpSizeEntry's + * #GimpUnitComboBox. + * + * NOTE: In most cases you won't be interested in this value because the + * #GimpSizeEntry's purpose is to shield the programmer from unit + * calculations. Use gimp_size_entry_get_refval() instead. + * + * Returns: The value of the chosen @field. + **/ +gdouble +gimp_size_entry_get_value (GimpSizeEntry *gse, + gint field) +{ + GimpSizeEntryField *gsef; + + g_return_val_if_fail (GIMP_IS_SIZE_ENTRY (gse), 0); + g_return_val_if_fail ((field >= 0) && (field < gse->number_of_fields), 0); + + gsef = (GimpSizeEntryField *) g_slist_nth_data (gse->fields, field); + return gsef->value; +} + +static void +gimp_size_entry_update_value (GimpSizeEntryField *gsef, + gdouble value) +{ + if (gsef->stop_recursion > 1) + return; + + gsef->value = value; + + switch (gsef->gse->update_policy) + { + case GIMP_SIZE_ENTRY_UPDATE_NONE: + break; + + case GIMP_SIZE_ENTRY_UPDATE_SIZE: + switch (gsef->gse->unit) + { + case GIMP_UNIT_PIXEL: + gsef->refval = value; + break; + case GIMP_UNIT_PERCENT: + gsef->refval = + CLAMP (gsef->lower + (gsef->upper - gsef->lower) * value / 100, + gsef->min_refval, gsef->max_refval); + break; + default: + gsef->refval = + CLAMP (value * gsef->resolution / + gimp_unit_get_factor (gsef->gse->unit), + gsef->min_refval, gsef->max_refval); + break; + } + if (gsef->gse->show_refval) + gtk_adjustment_set_value (gsef->refval_adjustment, gsef->refval); + break; + + case GIMP_SIZE_ENTRY_UPDATE_RESOLUTION: + gsef->refval = + CLAMP (value * gimp_unit_get_factor (gsef->gse->unit), + gsef->min_refval, gsef->max_refval); + if (gsef->gse->show_refval) + gtk_adjustment_set_value (gsef->refval_adjustment, gsef->refval); + break; + + default: + break; + } + + g_signal_emit (gsef->gse, gimp_size_entry_signals[VALUE_CHANGED], 0); +} + +/** + * gimp_size_entry_set_value: + * @gse: The sizeentry you want to set a value for. + * @field: The index of the field you want to set a value for. + * @value: The new value for @field. + * + * Sets the value for field # @field of the #GimpSizeEntry. + * + * The @value passed is treated to be a distance or resolution + * in the #GimpUnit the user has selected in the #GimpSizeEntry's + * #GimpUnitComboBox. + * + * NOTE: In most cases you won't be interested in this value because the + * #GimpSizeEntry's purpose is to shield the programmer from unit + * calculations. Use gimp_size_entry_set_refval() instead. + **/ +void +gimp_size_entry_set_value (GimpSizeEntry *gse, + gint field, + gdouble value) +{ + GimpSizeEntryField *gsef; + + g_return_if_fail (GIMP_IS_SIZE_ENTRY (gse)); + g_return_if_fail ((field >= 0) && (field < gse->number_of_fields)); + + gsef = (GimpSizeEntryField *) g_slist_nth_data (gse->fields, field); + + value = CLAMP (value, gsef->min_value, gsef->max_value); + + gtk_adjustment_set_value (gsef->value_adjustment, value); + gimp_size_entry_update_value (gsef, value); +} + + +static void +gimp_size_entry_value_callback (GtkWidget *widget, + gpointer data) +{ + GimpSizeEntryField *gsef; + gdouble new_value; + + gsef = (GimpSizeEntryField *) data; + + new_value = gtk_adjustment_get_value (GTK_ADJUSTMENT (widget)); + + if (gsef->value != new_value) + gimp_size_entry_update_value (gsef, new_value); +} + + +/** + * gimp_size_entry_set_refval_boundaries: + * @gse: The sizeentry you want to set the reference value boundaries for. + * @field: The index of the field you want to set the reference value + * boundaries for. + * @lower: The new lower boundary of the reference value of the chosen @field. + * @upper: The new upper boundary of the reference value of the chosen @field. + * + * Limits the range of possible reference values which can be entered in + * field # @field of the #GimpSizeEntry. + * + * The current reference value of the @field will be clamped to fit in the + * @field's new boundaries. + **/ +void +gimp_size_entry_set_refval_boundaries (GimpSizeEntry *gse, + gint field, + gdouble lower, + gdouble upper) +{ + GimpSizeEntryField *gsef; + + g_return_if_fail (GIMP_IS_SIZE_ENTRY (gse)); + g_return_if_fail ((field >= 0) && (field < gse->number_of_fields)); + g_return_if_fail (lower <= upper); + + gsef = (GimpSizeEntryField *) g_slist_nth_data (gse->fields, field); + gsef->min_refval = lower; + gsef->max_refval = upper; + + if (gse->show_refval) + { + g_object_freeze_notify (G_OBJECT (gsef->refval_adjustment)); + + gtk_adjustment_set_lower (gsef->refval_adjustment, gsef->min_refval); + gtk_adjustment_set_upper (gsef->refval_adjustment, gsef->max_refval); + } + + if (gsef->stop_recursion) /* this is a hack (but useful ;-) */ + { + if (gse->show_refval) + g_object_thaw_notify (G_OBJECT (gsef->refval_adjustment)); + + return; + } + + gsef->stop_recursion++; + switch (gsef->gse->update_policy) + { + case GIMP_SIZE_ENTRY_UPDATE_NONE: + break; + + case GIMP_SIZE_ENTRY_UPDATE_SIZE: + switch (gse->unit) + { + case GIMP_UNIT_PIXEL: + gimp_size_entry_set_value_boundaries (gse, field, + gsef->min_refval, + gsef->max_refval); + break; + case GIMP_UNIT_PERCENT: + gimp_size_entry_set_value_boundaries (gse, field, + 100 * (gsef->min_refval - + gsef->lower) / + (gsef->upper - gsef->lower), + 100 * (gsef->max_refval - + gsef->lower) / + (gsef->upper - gsef->lower)); + break; + default: + gimp_size_entry_set_value_boundaries (gse, field, + gsef->min_refval * + gimp_unit_get_factor (gse->unit) / + gsef->resolution, + gsef->max_refval * + gimp_unit_get_factor (gse->unit) / + gsef->resolution); + break; + } + break; + + case GIMP_SIZE_ENTRY_UPDATE_RESOLUTION: + gimp_size_entry_set_value_boundaries (gse, field, + gsef->min_refval / + gimp_unit_get_factor (gse->unit), + gsef->max_refval / + gimp_unit_get_factor (gse->unit)); + break; + + default: + break; + } + gsef->stop_recursion--; + + gimp_size_entry_set_refval (gse, field, gsef->refval); + + if (gse->show_refval) + g_object_thaw_notify (G_OBJECT (gsef->refval_adjustment)); +} + +/** + * gimp_size_entry_set_refval_digits: + * @gse: The sizeentry you want to set the reference value digits for. + * @field: The index of the field you want to set the reference value for. + * @digits: The new number of decimal digits for the #GtkSpinButton which + * displays @field's reference value. + * + * Sets the decimal digits of field # @field of the #GimpSizeEntry to + * @digits. + * + * If you don't specify this value explicitly, the reference value's number + * of digits will equal to 0 for #GIMP_SIZE_ENTRY_UPDATE_SIZE and to 2 for + * #GIMP_SIZE_ENTRY_UPDATE_RESOLUTION. + **/ +void +gimp_size_entry_set_refval_digits (GimpSizeEntry *gse, + gint field, + gint digits) +{ + GimpSizeEntryField *gsef; + + g_return_if_fail (GIMP_IS_SIZE_ENTRY (gse)); + g_return_if_fail ((field >= 0) && (field < gse->number_of_fields)); + g_return_if_fail ((digits >= 0) && (digits <= 6)); + + gsef = (GimpSizeEntryField*) g_slist_nth_data (gse->fields, field); + gsef->refval_digits = digits; + + if (gse->update_policy == GIMP_SIZE_ENTRY_UPDATE_SIZE) + { + if (gse->show_refval) + gtk_spin_button_set_digits (GTK_SPIN_BUTTON (gsef->refval_spinbutton), + gsef->refval_digits); + else if (gse->unit == GIMP_UNIT_PIXEL) + gtk_spin_button_set_digits (GTK_SPIN_BUTTON (gsef->value_spinbutton), + gsef->refval_digits); + } +} + +/** + * gimp_size_entry_get_refval: + * @gse: The sizeentry you want to know a reference value of. + * @field: The index of the field you want to know the reference value of. + * + * Returns the reference value for field # @field of the #GimpSizeEntry. + * + * The reference value is either a distance in pixels or a resolution + * in dpi, depending on which #GimpSizeEntryUpdatePolicy you chose in + * gimp_size_entry_new(). + * + * Returns: The reference value of the chosen @field. + **/ +gdouble +gimp_size_entry_get_refval (GimpSizeEntry *gse, + gint field) +{ + GimpSizeEntryField *gsef; + + /* return 1.0 to avoid division by zero */ + g_return_val_if_fail (GIMP_IS_SIZE_ENTRY (gse), 1.0); + g_return_val_if_fail ((field >= 0) && (field < gse->number_of_fields), 1.0); + + gsef = (GimpSizeEntryField*) g_slist_nth_data (gse->fields, field); + return gsef->refval; +} + +static void +gimp_size_entry_update_refval (GimpSizeEntryField *gsef, + gdouble refval) +{ + if (gsef->stop_recursion > 1) + return; + + gsef->refval = refval; + + switch (gsef->gse->update_policy) + { + case GIMP_SIZE_ENTRY_UPDATE_NONE: + break; + + case GIMP_SIZE_ENTRY_UPDATE_SIZE: + switch (gsef->gse->unit) + { + case GIMP_UNIT_PIXEL: + gsef->value = refval; + break; + case GIMP_UNIT_PERCENT: + gsef->value = + CLAMP (100 * (refval - gsef->lower) / (gsef->upper - gsef->lower), + gsef->min_value, gsef->max_value); + break; + default: + gsef->value = + CLAMP (refval * gimp_unit_get_factor (gsef->gse->unit) / + gsef->resolution, + gsef->min_value, gsef->max_value); + break; + } + gtk_adjustment_set_value (gsef->value_adjustment, gsef->value); + break; + + case GIMP_SIZE_ENTRY_UPDATE_RESOLUTION: + gsef->value = + CLAMP (refval / gimp_unit_get_factor (gsef->gse->unit), + gsef->min_value, gsef->max_value); + gtk_adjustment_set_value (gsef->value_adjustment, gsef->value); + break; + + default: + break; + } + + g_signal_emit (gsef->gse, gimp_size_entry_signals[REFVAL_CHANGED], 0); +} + +/** + * gimp_size_entry_set_refval: + * @gse: The sizeentry you want to set a reference value for. + * @field: The index of the field you want to set the reference value for. + * @refval: The new reference value for @field. + * + * Sets the reference value for field # @field of the #GimpSizeEntry. + * + * The @refval passed is either a distance in pixels or a resolution in dpi, + * depending on which #GimpSizeEntryUpdatePolicy you chose in + * gimp_size_entry_new(). + **/ +void +gimp_size_entry_set_refval (GimpSizeEntry *gse, + gint field, + gdouble refval) +{ + GimpSizeEntryField *gsef; + + g_return_if_fail (GIMP_IS_SIZE_ENTRY (gse)); + g_return_if_fail ((field >= 0) && (field < gse->number_of_fields)); + + gsef = (GimpSizeEntryField *) g_slist_nth_data (gse->fields, field); + + refval = CLAMP (refval, gsef->min_refval, gsef->max_refval); + + if (gse->show_refval) + gtk_adjustment_set_value (gsef->refval_adjustment, refval); + + gimp_size_entry_update_refval (gsef, refval); +} + +static void +gimp_size_entry_refval_callback (GtkWidget *widget, + gpointer data) +{ + GimpSizeEntryField *gsef; + gdouble new_refval; + + gsef = (GimpSizeEntryField *) data; + + new_refval = gtk_adjustment_get_value (GTK_ADJUSTMENT (widget)); + + if (gsef->refval != new_refval) + gimp_size_entry_update_refval (gsef, new_refval); +} + + +/** + * gimp_size_entry_get_unit: + * @gse: The sizeentry you want to know the unit of. + * + * Returns the #GimpUnit the user has selected in the #GimpSizeEntry's + * #GimpUnitComboBox. + * + * Returns: The sizeentry's unit. + **/ +GimpUnit +gimp_size_entry_get_unit (GimpSizeEntry *gse) +{ + g_return_val_if_fail (GIMP_IS_SIZE_ENTRY (gse), GIMP_UNIT_INCH); + + return gse->unit; +} + +static void +gimp_size_entry_update_unit (GimpSizeEntry *gse, + GimpUnit unit) +{ + GimpSizeEntryField *gsef; + gint i; + gint digits; + + gse->unit = unit; + + digits = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (gse), + "gimp-pixel-digits")); + + for (i = 0; i < gse->number_of_fields; i++) + { + gsef = (GimpSizeEntryField *) g_slist_nth_data (gse->fields, i); + + if (gse->update_policy == GIMP_SIZE_ENTRY_UPDATE_SIZE) + { + if (unit == GIMP_UNIT_PIXEL) + gtk_spin_button_set_digits (GTK_SPIN_BUTTON (gsef->value_spinbutton), + gsef->refval_digits + digits); + else if (unit == GIMP_UNIT_PERCENT) + gtk_spin_button_set_digits (GTK_SPIN_BUTTON (gsef->value_spinbutton), + 2 + digits); + else + gtk_spin_button_set_digits (GTK_SPIN_BUTTON (gsef->value_spinbutton), + GIMP_SIZE_ENTRY_DIGITS (unit) + digits); + } + else if (gse->update_policy == GIMP_SIZE_ENTRY_UPDATE_RESOLUTION) + { + digits = (gimp_unit_get_digits (GIMP_UNIT_INCH) - + gimp_unit_get_digits (unit)); + gtk_spin_button_set_digits (GTK_SPIN_BUTTON (gsef->value_spinbutton), + MAX (3 + digits, 3)); + } + + gsef->stop_recursion = 0; /* hack !!! */ + + gimp_size_entry_set_refval_boundaries (gse, i, + gsef->min_refval, + gsef->max_refval); + } + + g_signal_emit (gse, gimp_size_entry_signals[UNIT_CHANGED], 0); +} + + +/** + * gimp_size_entry_set_unit: + * @gse: The sizeentry you want to change the unit for. + * @unit: The new unit. + * + * Sets the #GimpSizeEntry's unit. The reference value for all fields will + * stay the same but the value in units or pixels per unit will change + * according to which #GimpSizeEntryUpdatePolicy you chose in + * gimp_size_entry_new(). + **/ +void +gimp_size_entry_set_unit (GimpSizeEntry *gse, + GimpUnit unit) +{ + g_return_if_fail (GIMP_IS_SIZE_ENTRY (gse)); + g_return_if_fail (gse->menu_show_pixels || (unit != GIMP_UNIT_PIXEL)); + g_return_if_fail (gse->menu_show_percent || (unit != GIMP_UNIT_PERCENT)); + + gimp_unit_combo_box_set_active (GIMP_UNIT_COMBO_BOX (gse->unitmenu), unit); + gimp_size_entry_update_unit (gse, unit); +} + +static void +gimp_size_entry_unit_callback (GtkWidget *widget, + GimpSizeEntry *gse) +{ + GimpUnit new_unit; + + new_unit = gimp_unit_combo_box_get_active (GIMP_UNIT_COMBO_BOX (widget)); + + if (gse->unit != new_unit) + gimp_size_entry_update_unit (gse, new_unit); +} + +/** + * gimp_size_entry_attach_eevl: + * @spin_button: one of the size_entry's spinbuttons. + * @gsef: a size entry field. + * + * Hooks in the GimpEevl unit expression parser into the + * #GtkSpinButton of the #GimpSizeEntryField. + **/ +static void +gimp_size_entry_attach_eevl (GtkSpinButton *spin_button, + GimpSizeEntryField *gsef) +{ + gtk_spin_button_set_numeric (spin_button, FALSE); + gtk_spin_button_set_update_policy (spin_button, GTK_UPDATE_IF_VALID); + + g_signal_connect_after (spin_button, "input", + G_CALLBACK (gimp_size_entry_eevl_input_callback), + gsef); +} + +static gint +gimp_size_entry_eevl_input_callback (GtkSpinButton *spinner, + gdouble *return_val, + gpointer *data) +{ + GimpSizeEntryField *gsef = (GimpSizeEntryField *) data; + GimpEevlOptions options = GIMP_EEVL_OPTIONS_INIT; + gboolean success = FALSE; + const gchar *error_pos = 0; + GError *error = NULL; + GimpEevlQuantity result; + + g_return_val_if_fail (GTK_IS_SPIN_BUTTON (spinner), FALSE); + g_return_val_if_fail (GIMP_IS_SIZE_ENTRY (gsef->gse), FALSE); + + options.unit_resolver_proc = gimp_size_entry_eevl_unit_resolver; + options.data = data; + + /* enable ratio expressions when there are two fields */ + if (gsef->gse->number_of_fields == 2) + { + GimpSizeEntryField *other_gsef; + GimpEevlQuantity default_unit_factor; + gdouble default_unit_offset; + + options.ratio_expressions = TRUE; + + if (gsef == gsef->gse->fields->data) + { + other_gsef = gsef->gse->fields->next->data; + + options.ratio_invert = FALSE; + } + else + { + other_gsef = gsef->gse->fields->data; + + options.ratio_invert = TRUE; + } + + options.unit_resolver_proc (NULL, + &default_unit_factor, &default_unit_offset, + options.data); + + options.ratio_quantity.value = other_gsef->value / + default_unit_factor.value; + options.ratio_quantity.dimension = default_unit_factor.dimension; + } + + success = gimp_eevl_evaluate (gtk_entry_get_text (GTK_ENTRY (spinner)), + &options, + &result, + &error_pos, + &error); + if (! success) + { + if (error && error_pos) + { + g_printerr ("ERROR: %s at '%s'\n", + error->message, + *error_pos ? error_pos : "<End of input>"); + } + else + { + g_printerr ("ERROR: Expression evaluation failed without error.\n"); + } + + gtk_widget_error_bell (GTK_WIDGET (spinner)); + return GTK_INPUT_ERROR; + } + else if (result.dimension != 1 && gsef->gse->unit != GIMP_UNIT_PERCENT) + { + g_printerr ("ERROR: result has wrong dimension (expected 1, got %d)\n", result.dimension); + + gtk_widget_error_bell (GTK_WIDGET (spinner)); + return GTK_INPUT_ERROR; + } + else if (result.dimension != 0 && gsef->gse->unit == GIMP_UNIT_PERCENT) + { + g_printerr ("ERROR: result has wrong dimension (expected 0, got %d)\n", result.dimension); + + gtk_widget_error_bell (GTK_WIDGET (spinner)); + return GTK_INPUT_ERROR; + } + else + { + /* transform back to UI-unit */ + GimpEevlQuantity ui_unit; + GtkAdjustment *adj; + gdouble val; + + switch (gsef->gse->unit) + { + case GIMP_UNIT_PIXEL: + ui_unit.value = gsef->resolution; + ui_unit.dimension = 1; + break; + case GIMP_UNIT_PERCENT: + ui_unit.value = 1.0; + ui_unit.dimension = 0; + break; + default: + ui_unit.value = gimp_unit_get_factor(gsef->gse->unit); + ui_unit.dimension = 1; + break; + } + + *return_val = result.value * ui_unit.value; + + /* CLAMP() to adjustment bounds, or too large/small values + * will make the validation machinery revert to the old value. + * See bug #694477. + */ + adj = gtk_spin_button_get_adjustment (spinner); + + val = CLAMP (*return_val, + gtk_adjustment_get_lower (adj), + gtk_adjustment_get_upper (adj)); + + if (val != *return_val) + { + gtk_widget_error_bell (GTK_WIDGET (spinner)); + *return_val = val; + } + + return TRUE; + } +} + +static gboolean +gimp_size_entry_eevl_unit_resolver (const gchar *identifier, + GimpEevlQuantity *factor, + gdouble *offset, + gpointer data) +{ + GimpSizeEntryField *gsef = (GimpSizeEntryField *) data; + gboolean resolve_default_unit = (identifier == NULL); + GimpUnit unit; + + g_return_val_if_fail (gsef, FALSE); + g_return_val_if_fail (factor != NULL, FALSE); + g_return_val_if_fail (offset != NULL, FALSE); + g_return_val_if_fail (GIMP_IS_SIZE_ENTRY (gsef->gse), FALSE); + + *offset = 0.0; + + for (unit = 0; + unit <= gimp_unit_get_number_of_units (); + unit++) + { + /* Hack to handle percent within the loop */ + if (unit == gimp_unit_get_number_of_units ()) + unit = GIMP_UNIT_PERCENT; + + if ((resolve_default_unit && unit == gsef->gse->unit) || + (identifier && + (strcmp (gimp_unit_get_symbol (unit), identifier) == 0 || + strcmp (gimp_unit_get_abbreviation (unit), identifier) == 0))) + { + switch (unit) + { + case GIMP_UNIT_PERCENT: + if (gsef->gse->unit == GIMP_UNIT_PERCENT) + { + factor->value = 1; + factor->dimension = 0; + } + else + { + /* gsef->upper contains the '100%'-value */ + factor->value = 100*gsef->resolution/(gsef->upper - gsef->lower); + /* gsef->lower contains the '0%'-value */ + *offset = gsef->lower/gsef->resolution; + factor->dimension = 1; + } + /* return here, don't perform percentage conversion */ + return TRUE; + case GIMP_UNIT_PIXEL: + factor->value = gsef->resolution; + break; + default: + factor->value = gimp_unit_get_factor (unit); + break; + } + + if (gsef->gse->unit == GIMP_UNIT_PERCENT) + { + /* map non-percentages onto percent */ + factor->value = gsef->upper/(100*gsef->resolution); + factor->dimension = 0; + } + else + { + factor->dimension = 1; + } + + /* We are done */ + return TRUE; + } + } + + return FALSE; +} + +/** + * gimp_size_entry_show_unit_menu: + * @gse: a #GimpSizeEntry + * @show: Boolean + * + * Controls whether a unit menu is shown in the size entry. If + * @show is #TRUE, the menu is shown; otherwise it is hidden. + * + * Since: 2.4 + **/ +void +gimp_size_entry_show_unit_menu (GimpSizeEntry *gse, + gboolean show) +{ + g_return_if_fail (GIMP_IS_SIZE_ENTRY (gse)); + + gtk_widget_set_visible (gse->unitmenu, show); +} + + +/** + * gimp_size_entry_set_pixel_digits: + * @gse: a #GimpSizeEntry + * @digits: the number of digits to display for a pixel size + * + * This function allows you set up a #GimpSizeEntry so that sub-pixel + * sizes can be entered. + **/ +void +gimp_size_entry_set_pixel_digits (GimpSizeEntry *gse, + gint digits) +{ + GimpUnitComboBox *combo; + + g_return_if_fail (GIMP_IS_SIZE_ENTRY (gse)); + + combo = GIMP_UNIT_COMBO_BOX (gse->unitmenu); + + g_object_set_data (G_OBJECT (gse), "gimp-pixel-digits", + GINT_TO_POINTER (digits)); + gimp_size_entry_update_unit (gse, gimp_unit_combo_box_get_active (combo)); +} + + +/** + * gimp_size_entry_grab_focus: + * @gse: The sizeentry you want to grab the keyboard focus. + * + * This function is rather ugly and just a workaround for the fact that + * it's impossible to implement gtk_widget_grab_focus() for a #GtkTable. + **/ +void +gimp_size_entry_grab_focus (GimpSizeEntry *gse) +{ + GimpSizeEntryField *gsef; + + g_return_if_fail (GIMP_IS_SIZE_ENTRY (gse)); + + gsef = gse->fields->data; + if (gsef) + gtk_widget_grab_focus (gse->show_refval ? + gsef->refval_spinbutton : gsef->value_spinbutton); +} + +/** + * gimp_size_entry_set_activates_default: + * @gse: A #GimpSizeEntry + * @setting: %TRUE to activate window's default widget on Enter keypress + * + * Iterates over all entries in the #GimpSizeEntry and calls + * gtk_entry_set_activates_default() on them. + * + * Since: 2.4 + **/ +void +gimp_size_entry_set_activates_default (GimpSizeEntry *gse, + gboolean setting) +{ + GSList *list; + + g_return_if_fail (GIMP_IS_SIZE_ENTRY (gse)); + + for (list = gse->fields; list; list = g_slist_next (list)) + { + GimpSizeEntryField *gsef = list->data; + + if (gsef->value_spinbutton) + gtk_entry_set_activates_default (GTK_ENTRY (gsef->value_spinbutton), + setting); + + if (gsef->refval_spinbutton) + gtk_entry_set_activates_default (GTK_ENTRY (gsef->refval_spinbutton), + setting); + } +} + +/** + * gimp_size_entry_get_help_widget: + * @gse: a #GimpSizeEntry + * @field: the index of the widget you want to get a pointer to + * + * You shouldn't fiddle with the internals of a #GimpSizeEntry but + * if you want to set tooltips using gimp_help_set_help_data() you + * can use this function to get a pointer to the spinbuttons. + * + * Return value: a #GtkWidget pointer that you can attach a tooltip to. + **/ +GtkWidget * +gimp_size_entry_get_help_widget (GimpSizeEntry *gse, + gint field) +{ + GimpSizeEntryField *gsef; + + g_return_val_if_fail (GIMP_IS_SIZE_ENTRY (gse), NULL); + g_return_val_if_fail ((field >= 0) && (field < gse->number_of_fields), NULL); + + gsef = g_slist_nth_data (gse->fields, field); + if (!gsef) + return NULL; + + return (gsef->refval_spinbutton ? + gsef->refval_spinbutton : gsef->value_spinbutton); +} |