Added.
2002-03-09 Richard Hestilow <hestilow@ximian.com> * preview-file-selection.[ch]: Added. * Makefile.am: Compile preview-file-selection.c. * preferences.c (bg_preferences_init): Initialize adjust_opacity to FALSE.
This commit is contained in:
Richard Hestilow
Rachel Hestilow
parent
2aea2f0f33
commit
18e6eb221f
5 changed files with 347 additions and 3 deletions
273
libbackground/preview-file-selection.c
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273
libbackground/preview-file-selection.c
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/* -*- mode: c; style: linux -*- */
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/* preview-file-selection.c
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* Copyright (C) 2001 Ximian, Inc.
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*
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* Written by Richard Hestilow <hestilow@ximian.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <libgnome/libgnome.h>
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#include <gtk/gtkimage.h>
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#include <gtk/gtkhbox.h>
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#include <gtk/gtkframe.h>
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#include <gtk/gtktreeview.h>
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#include <gtk/gtkmain.h>
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#include "preview-file-selection.h"
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#define SCALE 100
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struct _PreviewFileSelectionPrivate
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{
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GtkWidget *preview;
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};
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enum
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{
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PROP_0,
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PROP_DO_PREVIEW
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};
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static GObjectClass *parent_class;
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static void preview_file_selection_set_property (GObject *object, guint arg_id, const GValue *value, GParamSpec *spec);
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static void preview_file_selection_get_property (GObject *object, guint arg_id, GValue *value, GParamSpec *spec);
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static void
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preview_file_selection_finalize (GObject *object)
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{
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PreviewFileSelection *fsel = PREVIEW_FILE_SELECTION (object);
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g_free (fsel->priv);
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parent_class->finalize (object);
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}
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static void
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preview_file_selection_class_init (GObjectClass *object_class)
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{
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parent_class = g_type_class_ref (GTK_TYPE_FILE_SELECTION);
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object_class->set_property = preview_file_selection_set_property;
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object_class->get_property = preview_file_selection_get_property;
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object_class->finalize = preview_file_selection_finalize;
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g_object_class_install_property
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(object_class, PROP_DO_PREVIEW,
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g_param_spec_boolean ("do_preview",
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"Preview images",
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"Whether to preview images",
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TRUE,
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY));
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}
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static void
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preview_file_selection_init (GObject *object)
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{
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PreviewFileSelection *fsel = PREVIEW_FILE_SELECTION (object);
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fsel->priv = g_new0 (PreviewFileSelectionPrivate, 1);
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}
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GType
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preview_file_selection_get_type (void)
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{
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static GType type = 0;
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if (!type)
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{
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GTypeInfo info =
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{
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sizeof (PreviewFileSelectionClass),
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NULL,
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NULL,
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(GClassInitFunc) preview_file_selection_class_init,
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NULL,
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NULL,
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sizeof (PreviewFileSelection),
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0,
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(GInstanceInitFunc) preview_file_selection_init,
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NULL
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};
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type = g_type_register_static (GTK_TYPE_FILE_SELECTION,
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"PreviewFileSelection",
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&info, 0);
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}
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return type;
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}
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GtkWidget*
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preview_file_selection_new (const gchar *title, gboolean do_preview)
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{
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return GTK_WIDGET (
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g_object_new (PREVIEW_FILE_SELECTION_TYPE,
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"title", title,
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"do_preview", do_preview,
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NULL));
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}
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static void
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preview_file_selection_update (PreviewFileSelection *fsel, gpointer data)
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{
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GdkPixbuf *buf;
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const gchar *filename;
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g_return_if_fail (IS_PREVIEW_FILE_SELECTION (fsel));
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filename = gtk_file_selection_get_filename (GTK_FILE_SELECTION (fsel));
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if (filename && (buf = gdk_pixbuf_new_from_file (filename, NULL)))
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{
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GdkPixbuf *scaled;
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int w, h;
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int ow = gdk_pixbuf_get_width (buf);
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int oh = gdk_pixbuf_get_height (buf);
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if (ow <= SCALE && oh <= SCALE)
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scaled = gdk_pixbuf_ref (buf);
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else
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{
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if (ow > oh)
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{
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w = SCALE;
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h = SCALE * (((double)oh)/(double)ow);
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}
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else
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{
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h = SCALE;
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w = SCALE * (((double)ow)/(double)ow);
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}
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scaled = gdk_pixbuf_scale_simple (buf, w, h, GDK_INTERP_BILINEAR);
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}
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gtk_image_set_from_pixbuf (GTK_IMAGE (fsel->priv->preview),
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scaled);
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g_object_unref (scaled);
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g_object_unref (buf);
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}
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else
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gtk_image_set_from_file (GTK_IMAGE (fsel->priv->preview), NULL);
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}
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static void
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preview_file_selection_add_preview (PreviewFileSelection *fsel)
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{
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GtkWidget *hbox, *frame;
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g_return_if_fail (IS_PREVIEW_FILE_SELECTION (fsel));
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hbox = GTK_FILE_SELECTION (fsel)->file_list;
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do
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{
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hbox = hbox->parent;
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if (!hbox)
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{
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g_warning (_("Can't find an hbox, using a normal file selection"));
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return;
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}
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} while (!GTK_IS_HBOX (hbox));
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frame = gtk_frame_new (_("Preview"));
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gtk_widget_set_size_request (frame, SCALE + 10, SCALE + 10);
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gtk_widget_show (frame);
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gtk_box_pack_end (GTK_BOX (hbox), frame, FALSE, FALSE, 0);
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fsel->priv->preview = gtk_image_new ();
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gtk_container_add (GTK_CONTAINER (frame), fsel->priv->preview);
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gtk_widget_show (fsel->priv->preview);
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g_signal_connect_data (G_OBJECT (gtk_tree_view_get_selection (GTK_TREE_VIEW (GTK_FILE_SELECTION (fsel)->file_list))), "changed", (GCallback) preview_file_selection_update, fsel, NULL, G_CONNECT_AFTER | G_CONNECT_SWAPPED);
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preview_file_selection_update (fsel, NULL);
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}
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static void
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preview_file_selection_set_property (GObject *object, guint arg_id, const GValue *value, GParamSpec *spec)
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{
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PreviewFileSelection *fsel = PREVIEW_FILE_SELECTION (object);
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switch (arg_id)
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{
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case PROP_DO_PREVIEW:
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if (g_value_get_boolean (value))
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preview_file_selection_add_preview (fsel);
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break;
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}
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}
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static void preview_file_selection_get_property (GObject *object, guint arg_id, GValue *value, GParamSpec *spec)
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{
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PreviewFileSelection *fsel = PREVIEW_FILE_SELECTION (object);
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switch (arg_id)
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{
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case PROP_DO_PREVIEW:
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g_value_set_boolean (value, fsel->priv->preview != NULL);
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break;
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}
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}
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static void
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browse_dialog_ok (GtkWidget *button, GnomeFileEntry *entry)
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{
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gnome_file_entry_set_filename (entry, gtk_file_selection_get_filename (GTK_FILE_SELECTION (entry->fsw)));
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g_signal_emit_by_name (entry, "activate");
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gtk_widget_destroy (entry->fsw);
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}
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static void
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browse_dialog_kill (GtkFileSelection *fsel, GnomeFileEntry *entry)
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{
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entry->fsw = NULL;
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}
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static void
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browse_clicked_cb (GnomeFileEntry *entry, const gchar *title)
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{
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GtkFileSelection *fs = GTK_FILE_SELECTION (preview_file_selection_new (title, TRUE));
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entry->fsw = GTK_WIDGET (fs);
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g_signal_connect (fs->ok_button, "clicked",
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(GCallback) browse_dialog_ok, entry);
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g_signal_connect_swapped (fs->cancel_button, "clicked",
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(GCallback) gtk_widget_destroy, fs);
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g_signal_connect (fs, "destroy",
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(GCallback) browse_dialog_kill, entry);
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if (gtk_grab_get_current ())
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gtk_grab_add (entry->fsw);
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}
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void
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preview_file_selection_hookup_file_entry (GnomeFileEntry *entry, const gchar *title)
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{
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g_return_if_fail (GNOME_IS_FILE_ENTRY (entry));
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g_return_if_fail (title != NULL);
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g_signal_connect (G_OBJECT (entry), "browse_clicked",
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(GCallback) browse_clicked_cb, (gpointer) title);
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}
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