bc8d5f84d6
It made the transform code hard to read and never belonged into the tile manager anyway. It's a simple pixel buffer that should not know about any position in an image. Instead, pass around the offsets of tile managers explicitly, so everything is less obscure for the price of having more parameters. This will also help replacing TileManagers with GeglBuffers.
336 lines
10 KiB
C
336 lines
10 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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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 3 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, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <glib-object.h>
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#include "libgimpmath/gimpmath.h"
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#include "core-types.h"
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#include "base/pixel-region.h"
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#include "base/tile-manager.h"
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#include "base/tile-manager-preview.h"
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#include "base/temp-buf.h"
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#include "gimpbuffer.h"
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static void gimp_buffer_finalize (GObject *object);
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static gint64 gimp_buffer_get_memsize (GimpObject *object,
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gint64 *gui_size);
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static gboolean gimp_buffer_get_size (GimpViewable *viewable,
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gint *width,
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gint *height);
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static void gimp_buffer_get_preview_size (GimpViewable *viewable,
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gint size,
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gboolean is_popup,
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gboolean dot_for_dot,
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gint *popup_width,
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gint *popup_height);
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static gboolean gimp_buffer_get_popup_size (GimpViewable *viewable,
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gint width,
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gint height,
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gboolean dot_for_dot,
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gint *popup_width,
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gint *popup_height);
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static TempBuf * gimp_buffer_get_new_preview (GimpViewable *viewable,
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GimpContext *context,
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gint width,
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gint height);
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static gchar * gimp_buffer_get_description (GimpViewable *viewable,
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gchar **tooltip);
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G_DEFINE_TYPE (GimpBuffer, gimp_buffer, GIMP_TYPE_VIEWABLE)
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#define parent_class gimp_buffer_parent_class
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static void
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gimp_buffer_class_init (GimpBufferClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GimpObjectClass *gimp_object_class = GIMP_OBJECT_CLASS (klass);
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GimpViewableClass *viewable_class = GIMP_VIEWABLE_CLASS (klass);
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object_class->finalize = gimp_buffer_finalize;
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gimp_object_class->get_memsize = gimp_buffer_get_memsize;
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viewable_class->default_stock_id = "gtk-paste";
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viewable_class->get_size = gimp_buffer_get_size;
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viewable_class->get_preview_size = gimp_buffer_get_preview_size;
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viewable_class->get_popup_size = gimp_buffer_get_popup_size;
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viewable_class->get_new_preview = gimp_buffer_get_new_preview;
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viewable_class->get_description = gimp_buffer_get_description;
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}
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static void
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gimp_buffer_init (GimpBuffer *buffer)
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{
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buffer->tiles = NULL;
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}
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static void
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gimp_buffer_finalize (GObject *object)
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{
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GimpBuffer *buffer = GIMP_BUFFER (object);
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if (buffer->tiles)
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{
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tile_manager_unref (buffer->tiles);
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buffer->tiles = NULL;
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}
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gint64
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gimp_buffer_get_memsize (GimpObject *object,
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gint64 *gui_size)
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{
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GimpBuffer *buffer = GIMP_BUFFER (object);
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gint64 memsize = 0;
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memsize += tile_manager_get_memsize (buffer->tiles, FALSE);
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return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
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gui_size);
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}
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static gboolean
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gimp_buffer_get_size (GimpViewable *viewable,
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gint *width,
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gint *height)
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{
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GimpBuffer *buffer = GIMP_BUFFER (viewable);
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*width = gimp_buffer_get_width (buffer);
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*height = gimp_buffer_get_height (buffer);
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return TRUE;
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}
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static void
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gimp_buffer_get_preview_size (GimpViewable *viewable,
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gint size,
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gboolean is_popup,
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gboolean dot_for_dot,
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gint *width,
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gint *height)
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{
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GimpBuffer *buffer = GIMP_BUFFER (viewable);
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gimp_viewable_calc_preview_size (gimp_buffer_get_width (buffer),
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gimp_buffer_get_height (buffer),
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size,
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size,
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dot_for_dot, 1.0, 1.0,
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width,
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height,
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NULL);
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}
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static gboolean
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gimp_buffer_get_popup_size (GimpViewable *viewable,
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gint width,
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gint height,
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gboolean dot_for_dot,
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gint *popup_width,
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gint *popup_height)
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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 (viewable);
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buffer_width = gimp_buffer_get_width (buffer);
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buffer_height = gimp_buffer_get_height (buffer);
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if (buffer_width > width || buffer_height > height)
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{
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gboolean scaling_up;
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gimp_viewable_calc_preview_size (buffer_width,
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buffer_height,
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width * 2,
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height * 2,
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dot_for_dot, 1.0, 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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*popup_width = buffer_width;
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*popup_height = buffer_height;
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}
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return TRUE;
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}
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return FALSE;
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}
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static TempBuf *
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gimp_buffer_get_new_preview (GimpViewable *viewable,
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GimpContext *context,
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gint width,
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gint height)
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{
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GimpBuffer *buffer = GIMP_BUFFER (viewable);
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return tile_manager_get_preview (buffer->tiles, width, height);
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}
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static gchar *
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gimp_buffer_get_description (GimpViewable *viewable,
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gchar **tooltip)
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{
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GimpBuffer *buffer = GIMP_BUFFER (viewable);
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return g_strdup_printf ("%s (%d × %d)",
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gimp_object_get_name (buffer),
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gimp_buffer_get_width (buffer),
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gimp_buffer_get_height (buffer));
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}
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GimpBuffer *
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gimp_buffer_new (TileManager *tiles,
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const gchar *name,
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gint offset_x,
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gint offset_y,
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gboolean copy_pixels)
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{
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GimpBuffer *buffer;
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gint width, height;
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g_return_val_if_fail (tiles != NULL, NULL);
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g_return_val_if_fail (name != NULL, NULL);
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width = tile_manager_width (tiles);
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height = tile_manager_height (tiles);
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buffer = g_object_new (GIMP_TYPE_BUFFER,
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"name", name,
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NULL);
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if (copy_pixels)
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buffer->tiles = tile_manager_duplicate (tiles);
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else
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buffer->tiles = tile_manager_ref (tiles);
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buffer->offset_x = offset_x;
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buffer->offset_y = offset_y;
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return buffer;
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}
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GimpBuffer *
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gimp_buffer_new_from_pixbuf (GdkPixbuf *pixbuf,
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const gchar *name,
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gint offset_x,
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gint offset_y)
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{
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GimpBuffer *buffer;
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TileManager *tiles;
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guchar *pixels;
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PixelRegion destPR;
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gint width;
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gint height;
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gint rowstride;
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gint channels;
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gint y;
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g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), NULL);
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g_return_val_if_fail (name != NULL, NULL);
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width = gdk_pixbuf_get_width (pixbuf);
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height = gdk_pixbuf_get_height (pixbuf);
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rowstride = gdk_pixbuf_get_rowstride (pixbuf);
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channels = gdk_pixbuf_get_n_channels (pixbuf);
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tiles = tile_manager_new (width, height, channels);
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pixel_region_init (&destPR, tiles, 0, 0, width, height, TRUE);
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for (y = 0, pixels = gdk_pixbuf_get_pixels (pixbuf);
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y < height;
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y++, pixels += rowstride)
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{
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pixel_region_set_row (&destPR, 0, y, width, pixels);
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}
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buffer = gimp_buffer_new (tiles, name, offset_x, offset_y, FALSE);
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tile_manager_unref (tiles);
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return buffer;
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}
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gint
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gimp_buffer_get_width (const GimpBuffer *buffer)
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{
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g_return_val_if_fail (GIMP_IS_BUFFER (buffer), 0);
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return tile_manager_width (buffer->tiles);
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}
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gint
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gimp_buffer_get_height (const GimpBuffer *buffer)
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{
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g_return_val_if_fail (GIMP_IS_BUFFER (buffer), 0);
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return tile_manager_height (buffer->tiles);
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}
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gint
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gimp_buffer_get_bytes (const GimpBuffer *buffer)
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{
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g_return_val_if_fail (GIMP_IS_BUFFER (buffer), 0);
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return tile_manager_bpp (buffer->tiles);
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}
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GimpImageType
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gimp_buffer_get_image_type (const GimpBuffer *buffer)
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{
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g_return_val_if_fail (GIMP_IS_BUFFER (buffer), 0);
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switch (tile_manager_bpp (buffer->tiles))
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{
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case 1: return GIMP_GRAY_IMAGE;
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case 2: return GIMP_GRAYA_IMAGE;
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case 3: return GIMP_RGB_IMAGE;
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case 4: return GIMP_RGBA_IMAGE;
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}
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return 0;
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}
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TileManager *
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gimp_buffer_get_tiles (const GimpBuffer *buffer)
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{
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g_return_val_if_fail (GIMP_IS_BUFFER (buffer), NULL);
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return buffer->tiles;
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}
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