mirror of https://github.com/GNOME/gimp.git
483 lines
16 KiB
C
483 lines
16 KiB
C
/* 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
|
|
* <http://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) \
|
|
G_TYPE_INSTANCE_GET_PRIVATE (preview, \
|
|
GIMP_TYPE_ASPECT_PREVIEW, \
|
|
GimpAspectPreviewPrivate)
|
|
|
|
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 (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;
|
|
|
|
g_type_class_add_private (object_class, sizeof (GimpAspectPreviewPrivate));
|
|
|
|
/**
|
|
* 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", NULL, NULL,
|
|
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", NULL, NULL,
|
|
-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);
|
|
}
|