636 lines
21 KiB
C
636 lines
21 KiB
C
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/* LIBPIKA - The PIKA Library
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* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
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*
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* pikadrawablepreview.c
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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 3 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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* Lesser 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, see
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* <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include "libpikawidgets/pikawidgets.h"
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#include "pikauitypes.h"
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#include "pika.h"
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#include "pikadrawablepreview.h"
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/**
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* SECTION: pikadrawablepreview
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* @title: PikaDrawablePreview
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* @short_description: A widget providing a preview of a #PikaDrawable.
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*
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* A widget providing a preview of a #PikaDrawable.
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**/
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#define SELECTION_BORDER 8
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enum
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{
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PROP_0,
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PROP_DRAWABLE
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};
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typedef struct
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{
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gint x;
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gint y;
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gboolean update;
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} PreviewSettings;
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struct _PikaDrawablePreviewPrivate
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{
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PikaDrawable *drawable;
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};
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#define GET_PRIVATE(obj) (((PikaDrawablePreview *) (obj))->priv)
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static void pika_drawable_preview_constructed (GObject *object);
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static void pika_drawable_preview_dispose (GObject *object);
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static void pika_drawable_preview_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec);
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static void pika_drawable_preview_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec);
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static void pika_drawable_preview_style_updated (GtkWidget *widget);
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static void pika_drawable_preview_draw_original (PikaPreview *preview);
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static void pika_drawable_preview_draw_thumb (PikaPreview *preview,
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PikaPreviewArea *area,
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gint width,
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gint height);
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static void pika_drawable_preview_draw_buffer (PikaPreview *preview,
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const guchar *buffer,
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gint rowstride);
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static void pika_drawable_preview_set_drawable (PikaDrawablePreview *preview,
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PikaDrawable *drawable);
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G_DEFINE_TYPE_WITH_PRIVATE (PikaDrawablePreview, pika_drawable_preview,
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PIKA_TYPE_SCROLLED_PREVIEW)
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#define parent_class pika_drawable_preview_parent_class
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static gint pika_drawable_preview_counter = 0;
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static void
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pika_drawable_preview_class_init (PikaDrawablePreviewClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
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PikaPreviewClass *preview_class = PIKA_PREVIEW_CLASS (klass);
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object_class->constructed = pika_drawable_preview_constructed;
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object_class->dispose = pika_drawable_preview_dispose;
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object_class->get_property = pika_drawable_preview_get_property;
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object_class->set_property = pika_drawable_preview_set_property;
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widget_class->style_updated = pika_drawable_preview_style_updated;
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preview_class->draw = pika_drawable_preview_draw_original;
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preview_class->draw_thumb = pika_drawable_preview_draw_thumb;
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preview_class->draw_buffer = pika_drawable_preview_draw_buffer;
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/**
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* PikaDrawablePreview:drawable-id:
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*
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* The drawable the #PikaDrawablePreview is attached to.
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*
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* Since: 2.10
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*/
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g_object_class_install_property (object_class, PROP_DRAWABLE,
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g_param_spec_object ("drawable",
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"Drawable",
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"The drawable this preview is attached to",
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PIKA_TYPE_DRAWABLE,
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PIKA_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY));
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}
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static void
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pika_drawable_preview_init (PikaDrawablePreview *preview)
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{
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preview->priv = pika_drawable_preview_get_instance_private (preview);
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g_object_set (pika_preview_get_area (PIKA_PREVIEW (preview)),
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"check-size", pika_check_size (),
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"check-type", pika_check_type (),
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"check-custom-color1", pika_check_custom_color1 (),
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"check-custom-color2", pika_check_custom_color2 (),
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NULL);
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}
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static void
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pika_drawable_preview_constructed (GObject *object)
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{
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gchar *data_name;
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PreviewSettings settings;
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G_OBJECT_CLASS (parent_class)->constructed (object);
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data_name = g_strdup_printf ("%s-drawable-preview-%d",
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g_get_prgname (),
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++pika_drawable_preview_counter);
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if (pika_get_data (data_name, &settings))
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{
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pika_preview_set_update (PIKA_PREVIEW (object), settings.update);
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pika_scrolled_preview_set_position (PIKA_SCROLLED_PREVIEW (object),
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settings.x, settings.y);
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}
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g_object_set_data_full (object, "pika-drawable-preview-data-name",
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data_name, (GDestroyNotify) g_free);
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}
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static void
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pika_drawable_preview_dispose (GObject *object)
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{
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PikaDrawablePreviewPrivate *priv = GET_PRIVATE (object);
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const gchar *data_name;
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data_name = g_object_get_data (G_OBJECT (object),
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"pika-drawable-preview-data-name");
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if (data_name)
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{
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PikaPreview *preview = PIKA_PREVIEW (object);
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PreviewSettings settings;
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pika_preview_get_position (preview, &settings.x, &settings.y);
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settings.update = pika_preview_get_update (preview);
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pika_set_data (data_name, &settings, sizeof (PreviewSettings));
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}
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g_clear_object (&priv->drawable);
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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static void
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pika_drawable_preview_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec)
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{
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PikaDrawablePreview *preview = PIKA_DRAWABLE_PREVIEW (object);
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switch (property_id)
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{
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case PROP_DRAWABLE:
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g_value_set_object (value,
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pika_drawable_preview_get_drawable (preview));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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pika_drawable_preview_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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PikaDrawablePreview *preview = PIKA_DRAWABLE_PREVIEW (object);
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switch (property_id)
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{
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case PROP_DRAWABLE:
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pika_drawable_preview_set_drawable (preview,
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g_value_dup_object (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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pika_drawable_preview_style_updated (GtkWidget *widget)
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{
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PikaPreview *preview = PIKA_PREVIEW (widget);
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GtkWidget *area = pika_preview_get_area (preview);
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GTK_WIDGET_CLASS (parent_class)->style_updated (widget);
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if (area)
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{
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gint xmin, ymin;
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gint xmax, ymax;
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gint size;
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pika_preview_get_bounds (preview, &xmin, &ymin, &xmax, &ymax);
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gtk_widget_style_get (widget,
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"size", &size,
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NULL);
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gtk_widget_set_size_request (area,
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MIN (xmax - xmin, size),
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MIN (ymax - ymin, size));
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}
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}
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static void
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pika_drawable_preview_draw_original (PikaPreview *preview)
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{
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PikaDrawablePreviewPrivate *priv = GET_PRIVATE (preview);
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GBytes *buffer;
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gint width, height;
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gint tn_width, tn_height;
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gint xoff, yoff;
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gint xmin, ymin;
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gint xmax, ymax;
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gint bpp;
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PikaImageType type;
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if (priv->drawable == NULL)
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return;
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pika_preview_get_size (preview, &width, &height);
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pika_preview_get_offsets (preview, &xoff, &yoff);
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pika_preview_get_bounds (preview, &xmin, &ymin, &xmax, &ymax);
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xoff = CLAMP (xoff, 0, xmax - xmin - width);
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yoff = CLAMP (yoff, 0, ymax - ymin - height);
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pika_preview_set_offsets (preview, xoff, yoff);
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buffer = pika_drawable_get_sub_thumbnail_data (priv->drawable,
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xoff + xmin,
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yoff + ymin,
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width, height,
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width, height,
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&tn_width, &tn_height, &bpp);
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switch (bpp)
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{
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case 1: type = PIKA_GRAY_IMAGE; break;
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case 2: type = PIKA_GRAYA_IMAGE; break;
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case 3: type = PIKA_RGB_IMAGE; break;
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case 4: type = PIKA_RGBA_IMAGE; break;
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default:
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g_bytes_unref (buffer);
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return;
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}
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pika_preview_area_draw (PIKA_PREVIEW_AREA (pika_preview_get_area (preview)),
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0, 0, tn_width, tn_height, type,
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g_bytes_get_data (buffer, NULL), width * bpp);
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g_bytes_unref (buffer);
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}
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static void
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pika_drawable_preview_draw_thumb (PikaPreview *preview,
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PikaPreviewArea *area,
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gint width,
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gint height)
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{
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PikaDrawablePreviewPrivate *priv = GET_PRIVATE (preview);
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if (priv->drawable)
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_pika_drawable_preview_area_draw_thumb (area, priv->drawable,
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width, height);
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}
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void
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_pika_drawable_preview_area_draw_thumb (PikaPreviewArea *area,
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PikaDrawable *drawable,
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gint width,
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gint height)
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{
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GBytes *buffer;
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gint x1, y1, x2, y2;
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gint bpp;
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gint size = 100;
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gint nav_width, nav_height;
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gint tn_width, tn_height;
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g_return_if_fail (PIKA_IS_PREVIEW_AREA (area));
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g_return_if_fail (pika_item_is_valid (PIKA_ITEM (drawable)));
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g_return_if_fail (pika_item_is_drawable (PIKA_ITEM (drawable)));
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if (_pika_drawable_preview_get_bounds (drawable, &x1, &y1, &x2, &y2))
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{
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width = x2 - x1;
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height = y2 - y1;
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}
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else
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{
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width = pika_drawable_get_width (drawable);
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height = pika_drawable_get_height (drawable);
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}
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if (width > height)
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{
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nav_width = MIN (width, size);
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nav_height = (height * nav_width) / width;
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}
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else
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{
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nav_height = MIN (height, size);
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nav_width = (width * nav_height) / height;
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}
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if (_pika_drawable_preview_get_bounds (drawable, &x1, &y1, &x2, &y2))
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{
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buffer = pika_drawable_get_sub_thumbnail_data (drawable,
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x1, y1, x2 - x1, y2 - y1,
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nav_width, nav_height,
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&tn_width, &tn_height,
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&bpp);
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}
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else
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{
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buffer = pika_drawable_get_thumbnail_data (drawable,
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nav_width, nav_height,
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&tn_width, &tn_height,
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&bpp);
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}
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if (buffer)
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{
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PikaImageType type;
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|
|
gtk_widget_set_size_request (GTK_WIDGET (area), tn_width, tn_height);
|
||
|
|
gtk_widget_show (GTK_WIDGET (area));
|
||
|
|
gtk_widget_realize (GTK_WIDGET (area));
|
||
|
|
|
||
|
|
switch (bpp)
|
||
|
|
{
|
||
|
|
case 1: type = PIKA_GRAY_IMAGE; break;
|
||
|
|
case 2: type = PIKA_GRAYA_IMAGE; break;
|
||
|
|
case 3: type = PIKA_RGB_IMAGE; break;
|
||
|
|
case 4: type = PIKA_RGBA_IMAGE; break;
|
||
|
|
default:
|
||
|
|
g_bytes_unref (buffer);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
pika_preview_area_draw (area,
|
||
|
|
0, 0, tn_width, tn_height,
|
||
|
|
type,
|
||
|
|
g_bytes_get_data (buffer, NULL), bpp * tn_width);
|
||
|
|
g_bytes_unref (buffer);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_drawable_preview_draw_area (PikaDrawablePreview *preview,
|
||
|
|
gint x,
|
||
|
|
gint y,
|
||
|
|
gint width,
|
||
|
|
gint height,
|
||
|
|
const guchar *buf,
|
||
|
|
gint rowstride)
|
||
|
|
{
|
||
|
|
PikaDrawablePreviewPrivate *priv = GET_PRIVATE (preview);
|
||
|
|
PikaPreview *pika_preview = PIKA_PREVIEW (preview);
|
||
|
|
GtkWidget *area = pika_preview_get_area (pika_preview);
|
||
|
|
PikaImage *image;
|
||
|
|
gint xmin, ymin;
|
||
|
|
gint xoff, yoff;
|
||
|
|
|
||
|
|
pika_preview_get_bounds (pika_preview, &xmin, &ymin, NULL, NULL);
|
||
|
|
pika_preview_get_offsets (pika_preview, &xoff, &yoff);
|
||
|
|
|
||
|
|
image = pika_item_get_image (PIKA_ITEM (priv->drawable));
|
||
|
|
|
||
|
|
if (pika_selection_is_empty (image))
|
||
|
|
{
|
||
|
|
pika_preview_area_draw (PIKA_PREVIEW_AREA (area),
|
||
|
|
x - xoff - xmin,
|
||
|
|
y - yoff - ymin,
|
||
|
|
width,
|
||
|
|
height,
|
||
|
|
pika_drawable_type (priv->drawable),
|
||
|
|
buf, rowstride);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
gint offset_x, offset_y;
|
||
|
|
gint mask_x, mask_y;
|
||
|
|
gint mask_width, mask_height;
|
||
|
|
gint draw_x, draw_y;
|
||
|
|
gint draw_width, draw_height;
|
||
|
|
|
||
|
|
pika_drawable_get_offsets (priv->drawable, &offset_x, &offset_y);
|
||
|
|
|
||
|
|
if (pika_drawable_mask_intersect (priv->drawable,
|
||
|
|
&mask_x, &mask_y,
|
||
|
|
&mask_width, &mask_height) &&
|
||
|
|
pika_rectangle_intersect (mask_x, mask_y,
|
||
|
|
mask_width, mask_height,
|
||
|
|
x, y, width, height,
|
||
|
|
&draw_x, &draw_y,
|
||
|
|
&draw_width, &draw_height))
|
||
|
|
{
|
||
|
|
PikaImageType type;
|
||
|
|
PikaSelection *selection;
|
||
|
|
GBytes *src;
|
||
|
|
GBytes *sel;
|
||
|
|
gint d_w, d_h, d_bpp;
|
||
|
|
gint s_w, s_h, s_bpp;
|
||
|
|
|
||
|
|
selection = pika_image_get_selection (image);
|
||
|
|
|
||
|
|
src = pika_drawable_get_sub_thumbnail_data (priv->drawable,
|
||
|
|
draw_x, draw_y,
|
||
|
|
draw_width, draw_height,
|
||
|
|
draw_width, draw_height,
|
||
|
|
&d_w, &d_h,
|
||
|
|
&d_bpp);
|
||
|
|
|
||
|
|
sel = pika_drawable_get_sub_thumbnail_data (PIKA_DRAWABLE (selection),
|
||
|
|
draw_x + offset_x,
|
||
|
|
draw_y + offset_y,
|
||
|
|
draw_width, draw_height,
|
||
|
|
draw_width, draw_height,
|
||
|
|
&s_w, &s_h,
|
||
|
|
&s_bpp);
|
||
|
|
|
||
|
|
switch (d_bpp)
|
||
|
|
{
|
||
|
|
case 1: type = PIKA_GRAY_IMAGE; break;
|
||
|
|
case 2: type = PIKA_GRAYA_IMAGE; break;
|
||
|
|
case 3: type = PIKA_RGB_IMAGE; break;
|
||
|
|
case 4: type = PIKA_RGBA_IMAGE; break;
|
||
|
|
default:
|
||
|
|
g_bytes_unref (sel);
|
||
|
|
g_bytes_unref (src);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
pika_preview_area_mask (PIKA_PREVIEW_AREA (area),
|
||
|
|
draw_x - xoff - xmin,
|
||
|
|
draw_y - yoff - ymin,
|
||
|
|
draw_width,
|
||
|
|
draw_height,
|
||
|
|
type,
|
||
|
|
g_bytes_get_data (src, NULL), draw_width * d_bpp,
|
||
|
|
(buf +
|
||
|
|
(draw_x - x) * d_bpp +
|
||
|
|
(draw_y - y) * d_w * d_bpp),
|
||
|
|
rowstride,
|
||
|
|
g_bytes_get_data (sel, NULL), s_w);
|
||
|
|
|
||
|
|
g_bytes_unref (sel);
|
||
|
|
g_bytes_unref (src);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_drawable_preview_draw_buffer (PikaPreview *preview,
|
||
|
|
const guchar *buffer,
|
||
|
|
gint rowstride)
|
||
|
|
{
|
||
|
|
gint x, y;
|
||
|
|
gint width, height;
|
||
|
|
|
||
|
|
pika_preview_get_position (preview, &x, &y);
|
||
|
|
pika_preview_get_size (preview, &width, &height);
|
||
|
|
|
||
|
|
pika_drawable_preview_draw_area (PIKA_DRAWABLE_PREVIEW (preview),
|
||
|
|
x, y,
|
||
|
|
width, height,
|
||
|
|
buffer, rowstride);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_drawable_preview_set_drawable (PikaDrawablePreview *drawable_preview,
|
||
|
|
PikaDrawable *drawable)
|
||
|
|
{
|
||
|
|
PikaPreview *preview = PIKA_PREVIEW (drawable_preview);
|
||
|
|
PikaDrawablePreviewPrivate *priv = GET_PRIVATE (preview);
|
||
|
|
gint x1, y1, x2, y2;
|
||
|
|
|
||
|
|
g_return_if_fail (priv->drawable == NULL);
|
||
|
|
|
||
|
|
priv->drawable = drawable;
|
||
|
|
|
||
|
|
_pika_drawable_preview_get_bounds (drawable, &x1, &y1, &x2, &y2);
|
||
|
|
|
||
|
|
pika_preview_set_bounds (preview, x1, y1, x2, y2);
|
||
|
|
|
||
|
|
if (pika_drawable_is_indexed (drawable))
|
||
|
|
{
|
||
|
|
PikaImage *image = pika_item_get_image (PIKA_ITEM (drawable));
|
||
|
|
GtkWidget *area = pika_preview_get_area (preview);
|
||
|
|
guchar *cmap;
|
||
|
|
gint num_colors;
|
||
|
|
|
||
|
|
cmap = pika_image_get_colormap (image, NULL, &num_colors);
|
||
|
|
pika_preview_area_set_colormap (PIKA_PREVIEW_AREA (area),
|
||
|
|
cmap, num_colors);
|
||
|
|
g_free (cmap);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#define MAX3(a, b, c) (MAX (MAX ((a), (b)), (c)))
|
||
|
|
#define MIN3(a, b, c) (MIN (MIN ((a), (b)), (c)))
|
||
|
|
|
||
|
|
gboolean
|
||
|
|
_pika_drawable_preview_get_bounds (PikaDrawable *drawable,
|
||
|
|
gint *xmin,
|
||
|
|
gint *ymin,
|
||
|
|
gint *xmax,
|
||
|
|
gint *ymax)
|
||
|
|
{
|
||
|
|
gint width;
|
||
|
|
gint height;
|
||
|
|
gint offset_x;
|
||
|
|
gint offset_y;
|
||
|
|
gint x1, y1;
|
||
|
|
gint x2, y2;
|
||
|
|
gboolean retval;
|
||
|
|
|
||
|
|
g_return_val_if_fail (pika_item_is_valid (PIKA_ITEM (drawable)), FALSE);
|
||
|
|
g_return_val_if_fail (pika_item_is_drawable (PIKA_ITEM (drawable)), FALSE);
|
||
|
|
|
||
|
|
width = pika_drawable_get_width (drawable);
|
||
|
|
height = pika_drawable_get_height (drawable);
|
||
|
|
|
||
|
|
retval = pika_drawable_mask_bounds (drawable, &x1, &y1, &x2, &y2);
|
||
|
|
|
||
|
|
pika_drawable_get_offsets (drawable, &offset_x, &offset_y);
|
||
|
|
|
||
|
|
*xmin = MAX3 (x1 - SELECTION_BORDER, 0, - offset_x);
|
||
|
|
*ymin = MAX3 (y1 - SELECTION_BORDER, 0, - offset_y);
|
||
|
|
*xmax = MIN3 (x2 + SELECTION_BORDER, width, width + offset_x);
|
||
|
|
*ymax = MIN3 (y2 + SELECTION_BORDER, height, height + offset_y);
|
||
|
|
|
||
|
|
return retval;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* pika_drawable_preview_new_from_drawable:
|
||
|
|
* @drawable: (transfer none): a drawable
|
||
|
|
*
|
||
|
|
* Creates a new #PikaDrawablePreview widget for @drawable.
|
||
|
|
*
|
||
|
|
* Returns: A pointer to the new #PikaDrawablePreview widget.
|
||
|
|
*
|
||
|
|
* Since: 2.10
|
||
|
|
**/
|
||
|
|
GtkWidget *
|
||
|
|
pika_drawable_preview_new_from_drawable (PikaDrawable *drawable)
|
||
|
|
{
|
||
|
|
g_return_val_if_fail (pika_item_is_valid (PIKA_ITEM (drawable)), NULL);
|
||
|
|
g_return_val_if_fail (pika_item_is_drawable (PIKA_ITEM (drawable)), NULL);
|
||
|
|
|
||
|
|
return g_object_new (PIKA_TYPE_DRAWABLE_PREVIEW,
|
||
|
|
"drawable", drawable,
|
||
|
|
NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* pika_drawable_preview_get_drawable:
|
||
|
|
* @preview: a #PikaDrawablePreview widget
|
||
|
|
*
|
||
|
|
* Returns: (transfer none): the drawable that has been passed to
|
||
|
|
* pika_drawable_preview_new_from_drawable().
|
||
|
|
*
|
||
|
|
* Since: 2.10
|
||
|
|
**/
|
||
|
|
PikaDrawable *
|
||
|
|
pika_drawable_preview_get_drawable (PikaDrawablePreview *preview)
|
||
|
|
{
|
||
|
|
g_return_val_if_fail (PIKA_IS_DRAWABLE_PREVIEW (preview), NULL);
|
||
|
|
|
||
|
|
return GET_PRIVATE (preview)->drawable;
|
||
|
|
}
|
