mirror of https://github.com/GNOME/gimp.git
278 lines
7.3 KiB
C
278 lines
7.3 KiB
C
/* LIBGIMP - The GIMP Library
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* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
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*
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* gimpmemsizeentry.c
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* Copyright (C) 2000-2003 Sven Neumann <sven@gimp.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <gtk/gtk.h>
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#include "gimpwidgetstypes.h"
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#include "gimpmemsizeentry.h"
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#include "gimpwidgets.h"
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#include "libgimp/libgimp-intl.h"
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enum
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{
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VALUE_CHANGED,
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LAST_SIGNAL
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};
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static void gimp_memsize_entry_finalize (GObject *object);
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static void gimp_memsize_entry_adj_callback (GtkAdjustment *adj,
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GimpMemsizeEntry *entry);
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static void gimp_memsize_entry_unit_callback (GtkWidget *widget,
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GimpMemsizeEntry *entry);
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G_DEFINE_TYPE (GimpMemsizeEntry, gimp_memsize_entry, GTK_TYPE_HBOX)
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#define parent_class gimp_memsize_entry_parent_class
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static guint gimp_memsize_entry_signals[LAST_SIGNAL] = { 0 };
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static void
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gimp_memsize_entry_class_init (GimpMemsizeEntryClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->finalize = gimp_memsize_entry_finalize;
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klass->value_changed = NULL;
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gimp_memsize_entry_signals[VALUE_CHANGED] =
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g_signal_new ("value-changed",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GimpMemsizeEntryClass, value_changed),
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NULL, NULL,
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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}
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static void
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gimp_memsize_entry_init (GimpMemsizeEntry *entry)
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{
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gtk_box_set_spacing (GTK_BOX (entry), 4);
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entry->value = 0;
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entry->lower = 0;
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entry->upper = 0;
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entry->shift = 0;
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entry->adjustment = NULL;
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entry->menu = NULL;
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}
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static void
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gimp_memsize_entry_finalize (GObject *object)
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{
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GimpMemsizeEntry *entry = (GimpMemsizeEntry *) object;
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if (entry->adjustment)
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{
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g_object_unref (entry->adjustment);
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entry->adjustment = NULL;
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}
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gimp_memsize_entry_adj_callback (GtkAdjustment *adj,
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GimpMemsizeEntry *entry)
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{
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guint64 size = gtk_adjustment_get_value (adj);
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entry->value = size << entry->shift;
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g_signal_emit (entry, gimp_memsize_entry_signals[VALUE_CHANGED], 0);
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}
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static void
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gimp_memsize_entry_unit_callback (GtkWidget *widget,
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GimpMemsizeEntry *entry)
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{
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guint shift;
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gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget), (gint *) &shift);
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#if _MSC_VER < 1300
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# define CAST (gint64)
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#else
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# define CAST
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#endif
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if (shift != entry->shift)
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{
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entry->shift = shift;
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entry->adjustment->value = CAST entry->value >> shift;
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entry->adjustment->lower = CAST entry->lower >> shift;
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entry->adjustment->upper = CAST entry->upper >> shift;
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gtk_adjustment_value_changed (entry->adjustment);
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gtk_adjustment_changed (entry->adjustment);
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}
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#undef CAST
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}
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/**
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* gimp_memsize_entry_new:
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* @value: the initial value (in Bytes)
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* @lower: the lower limit for the value (in Bytes)
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* @upper: the upper limit for the value (in Bytes)
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*
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* Creates a new #GimpMemsizeEntry which is a #GtkHBox with a #GtkSpinButton
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* and a #GtkOptionMenu all setup to allow the user to enter memory sizes.
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*
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* Returns: Pointer to the new #GimpMemsizeEntry.
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**/
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GtkWidget *
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gimp_memsize_entry_new (guint64 value,
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guint64 lower,
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guint64 upper)
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{
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GimpMemsizeEntry *entry;
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guint shift;
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#if _MSC_VER < 1300
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# define CAST (gint64)
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#else
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# define CAST
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#endif
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g_return_val_if_fail (value >= lower && value <= upper, NULL);
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entry = g_object_new (GIMP_TYPE_MEMSIZE_ENTRY, NULL);
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for (shift = 30; shift > 10; shift -= 10)
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{
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if (value > ((guint64) 1 << shift) &&
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value % ((guint64) 1 << shift) == 0)
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break;
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}
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entry->value = value;
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entry->lower = lower;
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entry->upper = upper;
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entry->shift = shift;
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entry->spinbutton = gimp_spin_button_new ((GtkObject **) &entry->adjustment,
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CAST (value >> shift),
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CAST (lower >> shift),
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CAST (upper >> shift),
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1, 8, 0, 1, 0);
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#undef CAST
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g_object_ref (entry->adjustment);
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gtk_object_sink (GTK_OBJECT (entry->adjustment));
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gtk_entry_set_width_chars (GTK_ENTRY (entry->spinbutton), 10);
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gtk_box_pack_start (GTK_BOX (entry), entry->spinbutton, FALSE, FALSE, 0);
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gtk_widget_show (entry->spinbutton);
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g_signal_connect (entry->adjustment, "value-changed",
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G_CALLBACK (gimp_memsize_entry_adj_callback),
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entry);
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entry->menu = gimp_int_combo_box_new (_("Kilobytes"), 10,
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_("Megabytes"), 20,
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_("Gigabytes"), 30,
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NULL);
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gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (entry->menu), shift);
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g_signal_connect (entry->menu, "changed",
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G_CALLBACK (gimp_memsize_entry_unit_callback),
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entry);
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gtk_box_pack_start (GTK_BOX (entry), entry->menu, FALSE, FALSE, 0);
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gtk_widget_show (entry->menu);
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return GTK_WIDGET (entry);
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}
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/**
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* gimp_memsize_entry_set_value:
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* @entry: a #GimpMemsizeEntry
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* @value: the new value (in Bytes)
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*
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* Sets the @entry's value. Please note that the #GimpMemsizeEntry rounds
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* the value to full Kilobytes.
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**/
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void
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gimp_memsize_entry_set_value (GimpMemsizeEntry *entry,
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guint64 value)
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{
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guint shift;
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g_return_if_fail (GIMP_IS_MEMSIZE_ENTRY (entry));
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g_return_if_fail (value >= entry->lower && value <= entry->upper);
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for (shift = 30; shift > 10; shift -= 10)
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{
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if (value > ((guint64) 1 << shift) &&
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value % ((guint64) 1 << shift) == 0)
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break;
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}
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if (shift != entry->shift)
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{
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entry->shift = shift;
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entry->value = value;
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gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (entry->menu), shift);
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}
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#if _MSC_VER < 1300
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# define CAST (gint64)
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#else
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# define CAST
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#endif
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gtk_adjustment_set_value (entry->adjustment, CAST (value >> shift));
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#undef CASE
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}
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/**
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* gimp_memsize_entry_get_value:
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* @entry: a #GimpMemsizeEntry
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*
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* Retrieves the current value from a #GimpMemsizeEntry.
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*
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* Returns: the current value of @entry (in Bytes).
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**/
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guint64
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gimp_memsize_entry_get_value (GimpMemsizeEntry *entry)
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{
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g_return_val_if_fail (GIMP_IS_MEMSIZE_ENTRY (entry), 0);
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return entry->value;
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}
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