69893e4f72
and change some legacy places to get their tiles from the buffer returned by GimpPickable::get_buffer().
278 lines
8.8 KiB
C
278 lines
8.8 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 <gegl.h>
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#include "core-types.h"
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#include "base/pixel-region.h"
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#include "gegl/gimp-gegl-utils.h"
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#include "gimplayer.h"
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#include "gimppickable.h"
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#include "gimpprojectable.h"
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#include "gimpprojection.h"
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#include "gimpprojection-construct.h"
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/* local function prototypes */
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static void gimp_projection_construct_gegl (GimpProjection *proj,
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gint x,
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gint y,
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gint w,
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gint h);
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static void gimp_projection_construct_legacy (GimpProjection *proj,
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gint x,
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gint y,
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gint w,
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gint h);
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static void gimp_projection_initialize (GimpProjection *proj,
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gint x,
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gint y,
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gint w,
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gint h);
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/* public functions */
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void
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gimp_projection_construct (GimpProjection *proj,
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gint x,
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gint y,
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gint w,
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gint h)
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{
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g_return_if_fail (GIMP_IS_PROJECTION (proj));
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/* First, determine if the projection image needs to be
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* initialized--this is the case when there are no visible
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* layers that cover the entire canvas--either because layers
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* are offset or only a floating selection is visible
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*/
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gimp_projection_initialize (proj, x, y, w, h);
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/* call functions which process the list of layers and
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* the list of channels
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*/
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if (proj->use_gegl)
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{
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gimp_projection_construct_gegl (proj, x, y, w, h);
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}
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else
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{
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proj->construct_flag = FALSE;
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gimp_projection_construct_legacy (proj, x, y, w, h);
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}
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}
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/* private functions */
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static void
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gimp_projection_construct_gegl (GimpProjection *proj,
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gint x,
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gint y,
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gint w,
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gint h)
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{
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GeglRectangle rect = { x, y, w, h };
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if (! proj->processor)
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{
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GeglNode *sink = gimp_projection_get_sink_node (proj);
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proj->processor = gegl_node_new_processor (sink, &rect);
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}
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else
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{
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gegl_processor_set_rectangle (proj->processor, &rect);
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}
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while (gegl_processor_work (proj->processor, NULL));
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}
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static void
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gimp_projection_construct_legacy (GimpProjection *proj,
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gint x,
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gint y,
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gint w,
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gint h)
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{
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GList *list;
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GList *reverse_list = NULL;
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gint proj_off_x;
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gint proj_off_y;
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for (list = gimp_projectable_get_channels (proj->projectable);
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list;
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list = g_list_next (list))
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{
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if (gimp_item_get_visible (GIMP_ITEM (list->data)))
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{
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reverse_list = g_list_prepend (reverse_list, list->data);
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}
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}
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for (list = gimp_projectable_get_layers (proj->projectable);
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list;
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list = g_list_next (list))
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{
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GimpLayer *layer = list->data;
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if (! gimp_layer_is_floating_sel (layer) &&
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gimp_item_get_visible (GIMP_ITEM (layer)))
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{
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/* only add layers that are visible and not floating selections
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* to the list
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*/
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reverse_list = g_list_prepend (reverse_list, layer);
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}
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}
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gimp_projectable_get_offset (proj->projectable, &proj_off_x, &proj_off_y);
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for (list = reverse_list; list; list = g_list_next (list))
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{
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GimpItem *item = list->data;
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GeglBuffer *proj_buffer;
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PixelRegion projPR;
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gint x1, y1;
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gint x2, y2;
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gint off_x;
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gint off_y;
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gimp_item_get_offset (item, &off_x, &off_y);
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/* subtract the projectable's offsets because the list of
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* update areas is in tile-pyramid coordinates, but our
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* external API is always in terms of image coordinates.
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*/
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off_x -= proj_off_x;
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off_y -= proj_off_y;
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x1 = CLAMP (off_x, x, x + w);
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y1 = CLAMP (off_y, y, y + h);
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x2 = CLAMP (off_x + gimp_item_get_width (item), x, x + w);
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y2 = CLAMP (off_y + gimp_item_get_height (item), y, y + h);
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proj_buffer = gimp_pickable_get_buffer (GIMP_PICKABLE (proj));
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pixel_region_init (&projPR,
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gimp_gegl_buffer_get_tiles (proj_buffer),
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x1, y1, x2 - x1, y2 - y1,
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TRUE);
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gimp_drawable_project_region (GIMP_DRAWABLE (item),
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x1 - off_x, y1 - off_y,
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x2 - x1, y2 - y1,
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&projPR,
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proj->construct_flag);
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proj->construct_flag = TRUE; /* something was projected */
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}
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g_list_free (reverse_list);
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}
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/**
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* gimp_projection_initialize:
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* @proj: A #GimpProjection.
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* @x:
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* @y:
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* @w:
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* @h:
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*
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* This function determines whether a visible layer with combine mode
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* Normal provides complete coverage over the specified area. If not,
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* the projection is initialized to transparent black.
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*/
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static void
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gimp_projection_initialize (GimpProjection *proj,
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gint x,
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gint y,
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gint w,
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gint h)
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{
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GList *list;
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gint proj_off_x;
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gint proj_off_y;
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gboolean coverage = FALSE;
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gimp_projectable_get_offset (proj->projectable, &proj_off_x, &proj_off_y);
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for (list = gimp_projectable_get_layers (proj->projectable);
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list;
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list = g_list_next (list))
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{
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GimpLayer *layer = list->data;
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GimpDrawable *drawable = GIMP_DRAWABLE (layer);
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GimpItem *item = GIMP_ITEM (layer);
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gint off_x, off_y;
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gimp_item_get_offset (item, &off_x, &off_y);
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/* subtract the projectable's offsets because the list of
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* update areas is in tile-pyramid coordinates, but our
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* external API is always in terms of image coordinates.
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*/
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off_x -= proj_off_x;
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off_y -= proj_off_y;
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if (gimp_item_get_visible (item) &&
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! gimp_drawable_has_alpha (drawable) &&
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! gimp_layer_get_mask (layer) &&
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gimp_layer_get_mode (layer) == GIMP_NORMAL_MODE &&
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gimp_layer_get_opacity (layer) == GIMP_OPACITY_OPAQUE &&
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off_x <= x &&
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off_y <= y &&
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(off_x + gimp_item_get_width (item)) >= (x + w) &&
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(off_y + gimp_item_get_height (item)) >= (y + h))
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{
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coverage = TRUE;
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break;
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}
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}
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if (! coverage)
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{
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GeglBuffer *buffer;
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if (proj->use_gegl)
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{
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/* GEGL should really do this for us... */
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gegl_node_get (gimp_projection_get_sink_node (proj),
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"buffer", &buffer, NULL);
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}
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else
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{
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GeglBuffer *buffer = gimp_pickable_get_buffer (GIMP_PICKABLE (proj));
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TileManager *tiles = gimp_gegl_buffer_get_tiles (buffer);
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const Babl *format = gimp_pickable_get_format (GIMP_PICKABLE (proj));
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buffer = gimp_tile_manager_create_buffer (tiles, format);
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}
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gegl_buffer_clear (buffer, GEGL_RECTANGLE (x, y, w, h));
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g_object_unref (buffer);
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}
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}
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