/* LIBGIMP - The GIMP Library * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball * * gimpsizeentry.c * Copyright (C) 1999-2000 Sven Neumann * Michael Natterer * * 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 "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 : ""); } 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); }