Adding upstream version 2.10.34.upstream/2.10.34upstream

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

1 files changed, 483 insertions, 0 deletions

diff --git a/libgimp/gimpaspectpreview.c b/libgimp/gimpaspectpreview.c
new file mode 100644
index 0000000..6177746
--- /dev/null
+++ b/libgimp/gimpaspectpreview.c
@@ -0,0 +1,483 @@
+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * gimpaspectpreview.c
+ *
+ * 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
+ * Lesser 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 "libgimpwidgets/gimpwidgets.h"
+
+#include "gimpuitypes.h"
+
+#include "gimp.h"
+
+#include "libgimp-intl.h"
+
+#include "gimpaspectpreview.h"
+
+
+/**
+ * SECTION: gimpaspectpreview
+ * @title: GimpAspectPreview
+ * @short_description: A widget providing a preview with fixed aspect ratio.
+ *
+ * A widget providing a preview with fixed aspect ratio.
+ **/
+
+
+enum
+{
+  PROP_0,
+  PROP_DRAWABLE,
+  PROP_DRAWABLE_ID
+};
+
+typedef struct
+{
+  gint32 drawable_ID;
+} GimpAspectPreviewPrivate;
+
+typedef struct
+{
+  gboolean  update;
+} PreviewSettings;
+
+
+#define GIMP_ASPECT_PREVIEW_GET_PRIVATE(obj) \
+  ((GimpAspectPreviewPrivate *) gimp_aspect_preview_get_instance_private ((GimpAspectPreview *) (preview)))
+
+static void  gimp_aspect_preview_constructed  (GObject         *object);
+static void  gimp_aspect_preview_dispose      (GObject         *object);
+static void  gimp_aspect_preview_get_property (GObject         *object,
+                                               guint            property_id,
+                                               GValue          *value,
+                                               GParamSpec      *pspec);
+static void  gimp_aspect_preview_set_property (GObject         *object,
+                                               guint            property_id,
+                                               const GValue    *value,
+                                               GParamSpec      *pspec);
+
+static void  gimp_aspect_preview_style_set    (GtkWidget       *widget,
+                                               GtkStyle        *prev_style);
+static void  gimp_aspect_preview_draw         (GimpPreview     *preview);
+static void  gimp_aspect_preview_draw_buffer  (GimpPreview     *preview,
+                                               const guchar    *buffer,
+                                               gint             rowstride);
+static void  gimp_aspect_preview_transform    (GimpPreview     *preview,
+                                               gint             src_x,
+                                               gint             src_y,
+                                               gint            *dest_x,
+                                               gint            *dest_y);
+static void  gimp_aspect_preview_untransform  (GimpPreview     *preview,
+                                               gint             src_x,
+                                               gint             src_y,
+                                               gint            *dest_x,
+                                               gint            *dest_y);
+
+static void  gimp_aspect_preview_set_drawable (GimpAspectPreview *preview,
+                                               GimpDrawable      *drawable);
+static void  gimp_aspect_preview_set_drawable_id
+                                              (GimpAspectPreview *preview,
+                                               gint32             drawable_ID);
+
+
+G_DEFINE_TYPE_WITH_PRIVATE (GimpAspectPreview, gimp_aspect_preview,
+                            GIMP_TYPE_PREVIEW)
+
+#define parent_class gimp_aspect_preview_parent_class
+
+static gint gimp_aspect_preview_counter = 0;
+
+
+static void
+gimp_aspect_preview_class_init (GimpAspectPreviewClass *klass)
+{
+  GObjectClass     *object_class  = G_OBJECT_CLASS (klass);
+  GtkWidgetClass   *widget_class  = GTK_WIDGET_CLASS (klass);
+  GimpPreviewClass *preview_class = GIMP_PREVIEW_CLASS (klass);
+
+  object_class->constructed  = gimp_aspect_preview_constructed;
+  object_class->dispose      = gimp_aspect_preview_dispose;
+  object_class->get_property = gimp_aspect_preview_get_property;
+  object_class->set_property = gimp_aspect_preview_set_property;
+
+  widget_class->style_set    = gimp_aspect_preview_style_set;
+
+  preview_class->draw        = gimp_aspect_preview_draw;
+  preview_class->draw_buffer = gimp_aspect_preview_draw_buffer;
+  preview_class->transform   = gimp_aspect_preview_transform;
+  preview_class->untransform = gimp_aspect_preview_untransform;
+
+  /**
+   * GimpAspectPreview:drawable:
+   *
+   * Deprecated: use the drawable-id property instead.
+   *
+   * Since: 2.4
+   */
+  g_object_class_install_property (object_class, PROP_DRAWABLE,
+                                   g_param_spec_pointer ("drawable",
+                                                         "Drawable",
+                                                         "Deprecated: use the drawable-id property instead",
+                                                         GIMP_PARAM_READWRITE |
+                                                         G_PARAM_CONSTRUCT_ONLY));
+
+  /**
+   * GimpAspectPreview:drawable-id:
+   *
+   * The drawable the #GimpAspectPreview is attached to.
+   *
+   * Since: 2.10
+   */
+  g_object_class_install_property (object_class, PROP_DRAWABLE_ID,
+                                   g_param_spec_int ("drawable-id",
+                                                     "Drawable ID",
+                                                     "The drawable this preview is attached to",
+                                                     -1, G_MAXINT, -1,
+                                                     GIMP_PARAM_READWRITE |
+                                                     G_PARAM_CONSTRUCT_ONLY));
+}
+
+static void
+gimp_aspect_preview_init (GimpAspectPreview *preview)
+{
+  g_object_set (GIMP_PREVIEW (preview)->area,
+                "check-size", gimp_check_size (),
+                "check-type", gimp_check_type (),
+                NULL);
+}
+
+static void
+gimp_aspect_preview_constructed (GObject *object)
+{
+  gchar           *data_name;
+  PreviewSettings  settings;
+
+  G_OBJECT_CLASS (parent_class)->constructed (object);
+
+  data_name = g_strdup_printf ("%s-aspect-preview-%d",
+                               g_get_prgname (),
+                               gimp_aspect_preview_counter++);
+
+  if (gimp_get_data (data_name, &settings))
+    {
+      gimp_preview_set_update (GIMP_PREVIEW (object), settings.update);
+    }
+
+  g_object_set_data_full (object, "gimp-aspect-preview-data-name",
+                          data_name, (GDestroyNotify) g_free);
+}
+
+static void
+gimp_aspect_preview_dispose (GObject *object)
+{
+  const gchar *data_name = g_object_get_data (G_OBJECT (object),
+                                              "gimp-aspect-preview-data-name");
+
+  if (data_name)
+    {
+      GimpPreview     *preview = GIMP_PREVIEW (object);
+      PreviewSettings  settings;
+
+      settings.update = gimp_preview_get_update (preview);
+
+      gimp_set_data (data_name, &settings, sizeof (PreviewSettings));
+    }
+
+  G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gimp_aspect_preview_get_property (GObject    *object,
+                                  guint       property_id,
+                                  GValue     *value,
+                                  GParamSpec *pspec)
+{
+  GimpAspectPreview        *preview = GIMP_ASPECT_PREVIEW (object);
+  GimpAspectPreviewPrivate *priv    = GIMP_ASPECT_PREVIEW_GET_PRIVATE (preview);
+
+  switch (property_id)
+    {
+    case PROP_DRAWABLE:
+      g_value_set_pointer (value, preview->drawable);
+      break;
+
+    case PROP_DRAWABLE_ID:
+      g_value_set_int (value, priv->drawable_ID);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_aspect_preview_set_property (GObject      *object,
+                                    guint         property_id,
+                                    const GValue *value,
+                                    GParamSpec   *pspec)
+{
+  GimpAspectPreview        *preview = GIMP_ASPECT_PREVIEW (object);
+  GimpAspectPreviewPrivate *priv    = GIMP_ASPECT_PREVIEW_GET_PRIVATE (preview);
+
+  switch (property_id)
+    {
+    case PROP_DRAWABLE:
+      g_return_if_fail (priv->drawable_ID < 1);
+      if (g_value_get_pointer (value))
+        gimp_aspect_preview_set_drawable (preview,
+                                          g_value_get_pointer (value));
+      break;
+
+    case PROP_DRAWABLE_ID:
+      gimp_aspect_preview_set_drawable_id (preview,
+                                           g_value_get_int (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_aspect_preview_style_set (GtkWidget *widget,
+                               GtkStyle  *prev_style)
+{
+  GimpPreview              *preview = GIMP_PREVIEW (widget);
+  GimpAspectPreviewPrivate *priv    = GIMP_ASPECT_PREVIEW_GET_PRIVATE (preview);
+  gint                      width;
+  gint                      height;
+  gint                      size;
+
+  if (GTK_WIDGET_CLASS (parent_class)->style_set)
+    GTK_WIDGET_CLASS (parent_class)->style_set (widget, prev_style);
+
+  gtk_widget_style_get (widget,
+                        "size", &size,
+                        NULL);
+
+  width  = gimp_drawable_width  (priv->drawable_ID);
+  height = gimp_drawable_height (priv->drawable_ID);
+
+  if (width > height)
+    {
+      preview->width  = MIN (width, size);
+      preview->height = (height * preview->width) / width;
+    }
+  else
+    {
+      preview->height = MIN (height, size);
+      preview->width  = (width * preview->height) / height;
+    }
+
+  gtk_widget_set_size_request (preview->area,
+                               preview->width, preview->height);
+}
+
+
+static void
+gimp_aspect_preview_draw (GimpPreview *preview)
+{
+  g_return_if_fail (GIMP_IS_ASPECT_PREVIEW (preview));
+
+  gimp_preview_area_fill (GIMP_PREVIEW_AREA (preview->area),
+                          0, 0,
+                          preview->width,
+                          preview->height,
+                          0, 0, 0);
+}
+
+static void
+gimp_aspect_preview_draw_buffer (GimpPreview  *preview,
+                                 const guchar *buffer,
+                                 gint          rowstride)
+{
+  GimpAspectPreviewPrivate *priv = GIMP_ASPECT_PREVIEW_GET_PRIVATE (preview);
+  gint32                    image_ID;
+
+  image_ID = gimp_item_get_image (priv->drawable_ID);
+
+  if (gimp_selection_is_empty (image_ID))
+    {
+      gimp_preview_area_draw (GIMP_PREVIEW_AREA (preview->area),
+                              0, 0,
+                              preview->width, preview->height,
+                              gimp_drawable_type (priv->drawable_ID),
+                              buffer,
+                              rowstride);
+    }
+  else
+    {
+      guchar *sel;
+      guchar *src;
+      gint    selection_ID;
+      gint    width, height;
+      gint    bpp;
+
+      selection_ID = gimp_image_get_selection (image_ID);
+
+      width  = preview->width;
+      height = preview->height;
+
+      src = gimp_drawable_get_thumbnail_data (priv->drawable_ID,
+                                              &width, &height, &bpp);
+      sel = gimp_drawable_get_thumbnail_data (selection_ID,
+                                              &width, &height, &bpp);
+
+      gimp_preview_area_mask (GIMP_PREVIEW_AREA (preview->area),
+                              0, 0, preview->width, preview->height,
+                              gimp_drawable_type (priv->drawable_ID),
+                              src, width * gimp_drawable_bpp (priv->drawable_ID),
+                              buffer, rowstride,
+                              sel, width);
+
+      g_free (sel);
+      g_free (src);
+    }
+}
+
+static void
+gimp_aspect_preview_transform (GimpPreview *preview,
+                               gint         src_x,
+                               gint         src_y,
+                               gint        *dest_x,
+                               gint        *dest_y)
+{
+  GimpAspectPreviewPrivate *priv = GIMP_ASPECT_PREVIEW_GET_PRIVATE (preview);
+
+  *dest_x = (gdouble) src_x * preview->width  / gimp_drawable_width  (priv->drawable_ID);
+  *dest_y = (gdouble) src_y * preview->height / gimp_drawable_height (priv->drawable_ID);
+}
+
+static void
+gimp_aspect_preview_untransform (GimpPreview *preview,
+                                 gint         src_x,
+                                 gint         src_y,
+                                 gint        *dest_x,
+                                 gint        *dest_y)
+{
+  GimpAspectPreviewPrivate *priv = GIMP_ASPECT_PREVIEW_GET_PRIVATE (preview);
+
+  *dest_x = (gdouble) src_x * gimp_drawable_width  (priv->drawable_ID) / preview->width;
+  *dest_y = (gdouble) src_y * gimp_drawable_height (priv->drawable_ID) / preview->height;
+}
+
+static void
+gimp_aspect_preview_set_drawable (GimpAspectPreview *preview,
+                                  GimpDrawable      *drawable)
+{
+  GimpAspectPreviewPrivate *priv = GIMP_ASPECT_PREVIEW_GET_PRIVATE (preview);
+
+  g_return_if_fail (preview->drawable == NULL);
+  g_return_if_fail (priv->drawable_ID < 1);
+
+  preview->drawable = drawable;
+
+  gimp_aspect_preview_set_drawable_id (preview, drawable->drawable_id);
+}
+
+static void
+gimp_aspect_preview_set_drawable_id (GimpAspectPreview *preview,
+                                     gint32             drawable_ID)
+{
+  GimpAspectPreviewPrivate *priv = GIMP_ASPECT_PREVIEW_GET_PRIVATE (preview);
+  gint                      d_width;
+  gint                      d_height;
+  gint                      width;
+  gint                      height;
+
+  g_return_if_fail (priv->drawable_ID < 1);
+
+  priv->drawable_ID = drawable_ID;
+
+  d_width  = gimp_drawable_width  (priv->drawable_ID);
+  d_height = gimp_drawable_height (priv->drawable_ID);
+
+  if (d_width > d_height)
+    {
+      width  = MIN (d_width, 512);
+      height = (d_height * width) / d_width;
+    }
+  else
+    {
+      height = MIN (d_height, 512);
+      width  = (d_width * height) / d_height;
+    }
+
+  gimp_preview_set_bounds (GIMP_PREVIEW (preview), 0, 0, width, height);
+
+  if (height > 0)
+    g_object_set (GIMP_PREVIEW (preview)->frame,
+                  "ratio",
+                  (gdouble) d_width / (gdouble) d_height,
+                  NULL);
+}
+
+/**
+ * gimp_aspect_preview_new_from_drawable_id:
+ * @drawable_ID: a drawable ID
+ *
+ * Creates a new #GimpAspectPreview widget for @drawable_ID. See also
+ * gimp_drawable_preview_new_from_drawable_id().
+ *
+ * Since: 2.10
+ *
+ * Returns: a new #GimpAspectPreview.
+ **/
+GtkWidget *
+gimp_aspect_preview_new_from_drawable_id (gint32 drawable_ID)
+{
+  g_return_val_if_fail (gimp_item_is_valid (drawable_ID), NULL);
+  g_return_val_if_fail (gimp_item_is_drawable (drawable_ID), NULL);
+
+  return g_object_new (GIMP_TYPE_ASPECT_PREVIEW,
+                       "drawable-id", drawable_ID,
+                       NULL);
+}
+/**
+ * gimp_aspect_preview_new:
+ * @drawable: a #GimpDrawable
+ * @toggle:   unused
+ *
+ * Creates a new #GimpAspectPreview widget for @drawable. See also
+ * gimp_drawable_preview_new().
+ *
+ * In GIMP 2.2 the @toggle parameter was provided to conviently access
+ * the state of the "Preview" check-button. This is not any longer
+ * necessary as the preview itself now stores this state, as well as
+ * the scroll offset.
+ *
+ * Since: 2.2
+ *
+ * Returns: a new #GimpAspectPreview.
+ **/
+GtkWidget *
+gimp_aspect_preview_new (GimpDrawable *drawable,
+                         gboolean     *toggle)
+{
+  g_return_val_if_fail (drawable != NULL, NULL);
+
+  return g_object_new (GIMP_TYPE_ASPECT_PREVIEW,
+                       "drawable", drawable,
+                       NULL);
+}