Adding upstream version 2.10.22.upstream/2.10.22upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 320 insertions, 0 deletions

diff --git a/libgimpwidgets/gimpmemsizeentry.c b/libgimpwidgets/gimpmemsizeentry.c
new file mode 100644
index 0000000..1d925bb
--- /dev/null
+++ b/libgimpwidgets/gimpmemsizeentry.c
@@ -0,0 +1,320 @@
+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * gimpmemsizeentry.c
+ * Copyright (C) 2000-2003  Sven Neumann <sven@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 <gegl.h>
+#include <gtk/gtk.h>
+
+#include "gimpwidgetstypes.h"
+
+#include "gimpmemsizeentry.h"
+#include "gimpspinbutton.h"
+#include "gimpwidgets.h"
+
+#include "libgimp/libgimp-intl.h"
+
+
+/**
+ * SECTION: gimpmemsizeentry
+ * @title: GimpMemSizeEntry
+ * @short_description: A composite widget to enter a memory size.
+ *
+ * Similar to a #GimpSizeEntry but instead of lengths, this widget is
+ * used to let the user enter memory sizes. A combo box allows one to
+ * switch between Kilobytes, Megabytes and Gigabytes. Used in the GIMP
+ * preferences dialog.
+ **/
+
+
+enum
+{
+  VALUE_CHANGED,
+  LAST_SIGNAL
+};
+
+
+static void  gimp_memsize_entry_finalize      (GObject          *object);
+
+static void  gimp_memsize_entry_adj_callback  (GtkAdjustment    *adj,
+                                               GimpMemsizeEntry *entry);
+static void  gimp_memsize_entry_unit_callback (GtkWidget        *widget,
+                                               GimpMemsizeEntry *entry);
+
+static guint64 gimp_memsize_entry_get_rounded_value (GimpMemsizeEntry *entry,
+                                                     guint64           value);
+
+G_DEFINE_TYPE (GimpMemsizeEntry, gimp_memsize_entry, GTK_TYPE_BOX)
+
+#define parent_class gimp_memsize_entry_parent_class
+
+static guint gimp_memsize_entry_signals[LAST_SIGNAL] = { 0 };
+
+
+static void
+gimp_memsize_entry_class_init (GimpMemsizeEntryClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = gimp_memsize_entry_finalize;
+
+  klass->value_changed   = NULL;
+
+  gimp_memsize_entry_signals[VALUE_CHANGED] =
+    g_signal_new ("value-changed",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_FIRST,
+                  G_STRUCT_OFFSET (GimpMemsizeEntryClass, value_changed),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__VOID,
+                  G_TYPE_NONE, 0);
+}
+
+static void
+gimp_memsize_entry_init (GimpMemsizeEntry *entry)
+{
+  gtk_orientable_set_orientation (GTK_ORIENTABLE (entry),
+                                  GTK_ORIENTATION_HORIZONTAL);
+
+  gtk_box_set_spacing (GTK_BOX (entry), 4);
+
+  entry->value      = 0;
+  entry->lower      = 0;
+  entry->upper      = 0;
+  entry->shift      = 0;
+  entry->adjustment = NULL;
+  entry->menu       = NULL;
+}
+
+static void
+gimp_memsize_entry_finalize (GObject *object)
+{
+  GimpMemsizeEntry *entry = (GimpMemsizeEntry *) object;
+
+  g_clear_object (&entry->adjustment);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_memsize_entry_adj_callback (GtkAdjustment    *adj,
+                                 GimpMemsizeEntry *entry)
+{
+  guint64 size = gtk_adjustment_get_value (adj);
+
+  if (gimp_memsize_entry_get_rounded_value (entry, entry->value) != size)
+    /* Do not allow losing accuracy if the converted/displayed value
+     * stays the same.
+     */
+    entry->value = size << entry->shift;
+
+  g_signal_emit (entry, gimp_memsize_entry_signals[VALUE_CHANGED], 0);
+}
+
+static void
+gimp_memsize_entry_unit_callback (GtkWidget        *widget,
+                                  GimpMemsizeEntry *entry)
+{
+  guint  shift;
+
+  gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget), (gint *) &shift);
+
+#if _MSC_VER < 1300
+#  define CAST (gint64)
+#else
+#  define CAST
+#endif
+
+  if (shift != entry->shift)
+    {
+      entry->shift = shift;
+
+      gtk_adjustment_configure (entry->adjustment,
+                                gimp_memsize_entry_get_rounded_value (entry, entry->value),
+                                CAST entry->lower >> shift,
+                                CAST entry->upper >> shift,
+                                gtk_adjustment_get_step_increment (entry->adjustment),
+                                gtk_adjustment_get_page_increment (entry->adjustment),
+                                gtk_adjustment_get_page_size (entry->adjustment));
+    }
+
+#undef CAST
+}
+
+/**
+ * gimp_memsize_entry_get_rounded_value:
+ * @entry: #GimpMemsizeEntry whose set unit is used.
+ * @value: value to convert to @entry unit, and rounded.
+ *
+ * Returns: the proper integer value to be displayed for current unit.
+ *          This value has been appropriately rounded to the nearest
+ *          integer, away from zero.
+ */
+static guint64
+gimp_memsize_entry_get_rounded_value (GimpMemsizeEntry *entry,
+                                      guint64           value)
+{
+  guint64 converted;
+
+#if _MSC_VER < 1300
+#  define CAST (gint64)
+#else
+#  define CAST
+#endif
+
+  converted = (CAST value >> entry->shift) +
+              ((CAST entry->value >> (entry->shift - 1)) & 1);
+
+#undef CAST
+
+  return converted;
+}
+
+
+/**
+ * gimp_memsize_entry_new:
+ * @value: the initial value (in Bytes)
+ * @lower: the lower limit for the value (in Bytes)
+ * @upper: the upper limit for the value (in Bytes)
+ *
+ * Creates a new #GimpMemsizeEntry which is a #GtkHBox with a #GtkSpinButton
+ * and a #GtkOptionMenu all setup to allow the user to enter memory sizes.
+ *
+ * Returns: Pointer to the new #GimpMemsizeEntry.
+ **/
+GtkWidget *
+gimp_memsize_entry_new (guint64  value,
+                        guint64  lower,
+                        guint64  upper)
+{
+  GimpMemsizeEntry *entry;
+  GtkAdjustment    *adj;
+  guint             shift;
+
+#if _MSC_VER < 1300
+#  define CAST (gint64)
+#else
+#  define CAST
+#endif
+
+  g_return_val_if_fail (value >= lower && value <= upper, NULL);
+
+  entry = g_object_new (GIMP_TYPE_MEMSIZE_ENTRY, NULL);
+
+  for (shift = 30; shift > 10; shift -= 10)
+    {
+      if (value > (G_GUINT64_CONSTANT (1) << shift) &&
+          value % (G_GUINT64_CONSTANT (1) << shift) == 0)
+        break;
+    }
+
+  entry->value = value;
+  entry->lower = lower;
+  entry->upper = upper;
+  entry->shift = shift;
+
+  adj = (GtkAdjustment *) gtk_adjustment_new (gimp_memsize_entry_get_rounded_value (entry,
+                                                                                    entry->value),
+                                              CAST (lower >> shift),
+                                              CAST (upper >> shift),
+                                              1, 8, 0);
+
+  entry->spinbutton = gimp_spin_button_new (adj, 1.0, 0);
+  gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (entry->spinbutton), TRUE);
+
+#undef CAST
+
+  entry->adjustment = GTK_ADJUSTMENT (adj);
+  g_object_ref_sink (entry->adjustment);
+
+  gtk_entry_set_width_chars (GTK_ENTRY (entry->spinbutton), 7);
+  gtk_box_pack_start (GTK_BOX (entry), entry->spinbutton, FALSE, FALSE, 0);
+  gtk_widget_show (entry->spinbutton);
+
+  g_signal_connect (entry->adjustment, "value-changed",
+                    G_CALLBACK (gimp_memsize_entry_adj_callback),
+                    entry);
+
+  entry->menu = gimp_int_combo_box_new (_("Kibibyte"), 10,
+                                        _("Mebibyte"), 20,
+                                        _("Gibibyte"), 30,
+                                        NULL);
+
+  gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (entry->menu), shift);
+
+  g_signal_connect (entry->menu, "changed",
+                    G_CALLBACK (gimp_memsize_entry_unit_callback),
+                    entry);
+
+  gtk_box_pack_start (GTK_BOX (entry), entry->menu, FALSE, FALSE, 0);
+  gtk_widget_show (entry->menu);
+
+  return GTK_WIDGET (entry);
+}
+
+/**
+ * gimp_memsize_entry_set_value:
+ * @entry: a #GimpMemsizeEntry
+ * @value: the new value (in Bytes)
+ *
+ * Sets the @entry's value. Please note that the #GimpMemsizeEntry rounds
+ * the value to full Kilobytes.
+ **/
+void
+gimp_memsize_entry_set_value (GimpMemsizeEntry *entry,
+                              guint64           value)
+{
+  guint shift;
+
+  g_return_if_fail (GIMP_IS_MEMSIZE_ENTRY (entry));
+  g_return_if_fail (value >= entry->lower && value <= entry->upper);
+
+  for (shift = 30; shift > 10; shift -= 10)
+    {
+      if (value > (G_GUINT64_CONSTANT (1) << shift) &&
+          value % (G_GUINT64_CONSTANT (1) << shift) == 0)
+        break;
+    }
+
+  if (shift != entry->shift)
+    gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (entry->menu), shift);
+
+  gtk_adjustment_set_value (entry->adjustment,
+                            (gdouble) gimp_memsize_entry_get_rounded_value (entry, value));
+
+#undef CASE
+}
+
+/**
+ * gimp_memsize_entry_get_value:
+ * @entry: a #GimpMemsizeEntry
+ *
+ * Retrieves the current value from a #GimpMemsizeEntry.
+ *
+ * Returns: the current value of @entry (in Bytes).
+ **/
+guint64
+gimp_memsize_entry_get_value (GimpMemsizeEntry *entry)
+{
+  g_return_val_if_fail (GIMP_IS_MEMSIZE_ENTRY (entry), 0);
+
+  return entry->value;
+}