mirror of https://github.com/GNOME/gimp.git
163 lines
4.6 KiB
C
163 lines
4.6 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* GimpImagefilePreview Widget
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* Copyright (C) 2001 Michael Natterer <mitch@gimp.org>
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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 of the License, or
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* (at your option) 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 02111-1307, USA.
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*/
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#include "config.h"
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#include <gtk/gtk.h>
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#include "widgets-types.h"
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#include "base/temp-buf.h"
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#include "core/gimpimagefile.h"
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#include "gimpimagefilepreview.h"
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static void gimp_imagefile_preview_class_init (GimpImagefilePreviewClass *klass);
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static void gimp_imagefile_preview_render (GimpPreview *preview);
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static gboolean gimp_imagefile_preview_needs_popup (GimpPreview *preview);
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static void gimp_imagefile_preview_double_clicked (GimpPreview *preview);
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static GimpPreviewClass *parent_class = NULL;
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GType
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gimp_imagefile_preview_get_type (void)
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{
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static GType preview_type = 0;
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if (! preview_type)
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{
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static const GTypeInfo preview_info =
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{
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sizeof (GimpImagefilePreviewClass),
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NULL, /* base_init */
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NULL, /* base_finalize */
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(GClassInitFunc) gimp_imagefile_preview_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GimpImagefilePreview),
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0, /* n_preallocs */
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NULL /* instance_init */
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};
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preview_type = g_type_register_static (GIMP_TYPE_PREVIEW,
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"GimpImagefilePreview",
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&preview_info, 0);
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}
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return preview_type;
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}
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static void
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gimp_imagefile_preview_class_init (GimpImagefilePreviewClass *klass)
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{
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GimpPreviewClass *preview_class;
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preview_class = GIMP_PREVIEW_CLASS (klass);
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parent_class = g_type_class_peek_parent (klass);
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preview_class->double_clicked = gimp_imagefile_preview_double_clicked;
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preview_class->needs_popup = gimp_imagefile_preview_needs_popup;
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preview_class->render = gimp_imagefile_preview_render;
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}
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static void
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gimp_imagefile_preview_render (GimpPreview *preview)
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{
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TempBuf *render_buf;
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TempBuf *temp_buf;
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g_return_if_fail (preview->width > 0 && preview->height > 0);
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render_buf = gimp_viewable_get_new_preview (preview->viewable,
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preview->width,
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preview->height);
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if (!render_buf)
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return; /* FIXME: render an empty image icon */
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if (render_buf->width > preview->width ||
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render_buf->height > preview->height)
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{
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gdouble ratio;
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gint width;
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gint height;
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if (render_buf->width >= render_buf->height)
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ratio = (gdouble) preview->width / (gdouble) render_buf->width;
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else
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ratio = (gdouble) preview->height / (gdouble) render_buf->height;
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width = RINT (ratio * render_buf->width);
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height = RINT (ratio * render_buf->height);
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temp_buf = render_buf;
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render_buf = temp_buf_scale (temp_buf, width, height);
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temp_buf_free (temp_buf);
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}
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if (render_buf->width != preview->width ||
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render_buf->height != preview->height)
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{
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gint x, y;
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guchar white[4] = { 255, 255, 255, 255 };
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x = (preview->width - render_buf->width) / 2;
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y = (preview->height - render_buf->height) / 2;
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temp_buf = temp_buf_new (preview->width, preview->height,
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render_buf->bytes,
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0, 0,
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white);
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temp_buf_copy_area (render_buf, temp_buf,
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0, 0,
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render_buf->width,
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render_buf->height,
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x, y);
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temp_buf_free (render_buf);
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render_buf = temp_buf;
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}
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gimp_preview_render_and_flush (preview, render_buf, -1);
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temp_buf_free (render_buf);
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}
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static gboolean
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gimp_imagefile_preview_needs_popup (GimpPreview *preview)
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{
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return FALSE;
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}
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static void
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gimp_imagefile_preview_double_clicked (GimpPreview *preview)
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{
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gimp_imagefile_update_thumbnail (GIMP_IMAGEFILE (preview->viewable));
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}
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