mirror of https://github.com/GNOME/gimp.git
270 lines
6.4 KiB
C
270 lines
6.4 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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* gimpbufferpreview.c
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* Copyright (C) 2001 Michael Natterer
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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 "base/tile-manager.h"
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#include "core/gimpbuffer.h"
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#include "gimpbufferpreview.h"
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static void gimp_buffer_preview_class_init (GimpBufferPreviewClass *klass);
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static void gimp_buffer_preview_init (GimpBufferPreview *preview);
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static void gimp_buffer_preview_get_size (GimpPreview *preview,
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gint size,
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gint *width,
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gint *height);
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static void gimp_buffer_preview_render (GimpPreview *preview);
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static GtkWidget * gimp_buffer_preview_create_popup (GimpPreview *preview);
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static gboolean gimp_buffer_preview_needs_popup (GimpPreview *preview);
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static GimpPreviewClass *parent_class = NULL;
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GtkType
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gimp_buffer_preview_get_type (void)
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{
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static GtkType preview_type = 0;
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if (! preview_type)
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{
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GtkTypeInfo preview_info =
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{
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"GimpBufferPreview",
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sizeof (GimpBufferPreview),
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sizeof (GimpBufferPreviewClass),
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(GtkClassInitFunc) gimp_buffer_preview_class_init,
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(GtkObjectInitFunc) gimp_buffer_preview_init,
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/* reserved_1 */ NULL,
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/* reserved_2 */ NULL,
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(GtkClassInitFunc) NULL
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};
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preview_type = gtk_type_unique (GIMP_TYPE_PREVIEW, &preview_info);
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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_buffer_preview_class_init (GimpBufferPreviewClass *klass)
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{
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GtkObjectClass *object_class;
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GimpPreviewClass *preview_class;
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object_class = (GtkObjectClass *) klass;
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preview_class = (GimpPreviewClass *) klass;
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parent_class = gtk_type_class (GIMP_TYPE_PREVIEW);
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preview_class->get_size = gimp_buffer_preview_get_size;
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preview_class->render = gimp_buffer_preview_render;
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preview_class->create_popup = gimp_buffer_preview_create_popup;
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preview_class->needs_popup = gimp_buffer_preview_needs_popup;
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}
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static void
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gimp_buffer_preview_init (GimpBufferPreview *buffer_preview)
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{
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}
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static void
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gimp_buffer_preview_get_size (GimpPreview *preview,
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gint size,
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gint *width,
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gint *height)
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{
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GimpBuffer *buffer;
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gboolean scaling_up;
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buffer = GIMP_BUFFER (preview->viewable);
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gimp_preview_calc_size (preview,
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tile_manager_width (buffer->tiles),
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tile_manager_height (buffer->tiles),
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size,
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size,
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1.0,
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1.0,
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width,
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height,
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&scaling_up);
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}
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static void
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gimp_buffer_preview_render (GimpPreview *preview)
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{
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GimpBuffer *buffer;
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gint buffer_width;
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gint buffer_height;
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gint width;
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gint height;
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gint preview_width;
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gint preview_height;
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gboolean scaling_up;
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TempBuf *render_buf;
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buffer = GIMP_BUFFER (preview->viewable);
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buffer_width = tile_manager_width (buffer->tiles);
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buffer_height = tile_manager_height (buffer->tiles);
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width = preview->width;
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height = preview->height;
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gimp_preview_calc_size (preview,
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buffer_width,
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buffer_height,
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width,
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height,
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1.0,
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1.0,
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&preview_width,
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&preview_height,
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&scaling_up);
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if (scaling_up)
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{
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TempBuf *temp_buf;
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temp_buf = gimp_viewable_get_new_preview (preview->viewable,
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buffer_width,
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buffer_height);
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render_buf = temp_buf_scale (temp_buf, preview_width, preview_height);
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temp_buf_free (temp_buf);
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}
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else
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{
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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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}
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if (preview_width < width)
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render_buf->x = (width - preview_width) / 2;
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if (preview_height < height)
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render_buf->y = (height - preview_height) / 2;
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if (render_buf->x || render_buf->y)
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{
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TempBuf *temp_buf;
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guchar white[4] = { 255, 255, 255, 255 };
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temp_buf = temp_buf_new (width, 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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render_buf->x,
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render_buf->y);
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temp_buf_free (render_buf);
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gimp_preview_render_and_flush (preview,
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temp_buf,
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-1);
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temp_buf_free (temp_buf);
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return;
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}
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gimp_preview_render_and_flush (preview,
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render_buf,
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-1);
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temp_buf_free (render_buf);
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}
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static GtkWidget *
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gimp_buffer_preview_create_popup (GimpPreview *preview)
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{
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GimpBuffer *buffer;
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gint buffer_width;
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gint buffer_height;
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gint popup_width;
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gint popup_height;
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gboolean scaling_up;
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buffer = GIMP_BUFFER (preview->viewable);
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buffer_width = tile_manager_width (buffer->tiles);
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buffer_height = tile_manager_height (buffer->tiles);
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gimp_preview_calc_size (preview,
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buffer_width,
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buffer_height,
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MIN (preview->width * 2, 256),
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MIN (preview->height * 2, 256),
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1.0,
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1.0,
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&popup_width,
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&popup_height,
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&scaling_up);
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if (scaling_up)
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{
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return gimp_preview_new_full (preview->viewable,
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buffer_width,
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buffer_height,
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0,
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TRUE, FALSE, FALSE);
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}
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else
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{
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return gimp_preview_new_full (preview->viewable,
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popup_width,
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popup_height,
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0,
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TRUE, FALSE, FALSE);
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}
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}
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static gboolean
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gimp_buffer_preview_needs_popup (GimpPreview *preview)
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{
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GimpBuffer *buffer;
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gint buffer_width;
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gint buffer_height;
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buffer = GIMP_BUFFER (preview->viewable);
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buffer_width = tile_manager_width (buffer->tiles);
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buffer_height = tile_manager_height (buffer->tiles);
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if (buffer_width > preview->width || buffer_height > preview->height)
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return TRUE;
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return FALSE;
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}
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