mirror of https://github.com/GNOME/gimp.git
534 lines
20 KiB
C
534 lines
20 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 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 <glib-object.h>
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#include "libgimpbase/gimpbase.h"
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#include "paint-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 "base/pixel-region.h"
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#include "core/gimp.h"
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#include "core/gimpdrawable.h"
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#include "core/gimpimage.h"
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#include "core/gimppickable.h"
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#include "gimpsourcecore.h"
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#include "gimpsourceoptions.h"
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#include "gimp-intl.h"
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enum
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{
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PROP_0,
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PROP_SRC_DRAWABLE,
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PROP_SRC_X,
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PROP_SRC_Y
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};
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static void gimp_source_core_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gimp_source_core_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec);
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static gboolean gimp_source_core_start (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpCoords *coords,
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GError **error);
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static void gimp_source_core_paint (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpPaintState paint_state,
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guint32 time);
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#if 0
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static void gimp_source_core_motion (GimpSourceCore *source_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options);
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#endif
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static gboolean gimp_source_core_real_get_source (GimpSourceCore *source_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpPickable *src_pickable,
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gint src_offset_x,
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gint src_offset_y,
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TempBuf *paint_area,
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gint *paint_area_offset_x,
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gint *paint_area_offset_y,
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gint *paint_area_width,
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gint *paint_area_height,
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PixelRegion *srcPR);
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static void gimp_source_core_set_src_drawable (GimpSourceCore *source_core,
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GimpDrawable *drawable);
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G_DEFINE_TYPE (GimpSourceCore, gimp_source_core, GIMP_TYPE_BRUSH_CORE)
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#define parent_class gimp_source_core_parent_class
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static void
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gimp_source_core_class_init (GimpSourceCoreClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GimpPaintCoreClass *paint_core_class = GIMP_PAINT_CORE_CLASS (klass);
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GimpBrushCoreClass *brush_core_class = GIMP_BRUSH_CORE_CLASS (klass);
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object_class->set_property = gimp_source_core_set_property;
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object_class->get_property = gimp_source_core_get_property;
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paint_core_class->start = gimp_source_core_start;
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paint_core_class->paint = gimp_source_core_paint;
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brush_core_class->handles_changing_brush = TRUE;
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klass->get_source = gimp_source_core_real_get_source;
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klass->motion = NULL;
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g_object_class_install_property (object_class, PROP_SRC_DRAWABLE,
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g_param_spec_object ("src-drawable",
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NULL, NULL,
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GIMP_TYPE_DRAWABLE,
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GIMP_PARAM_READWRITE));
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g_object_class_install_property (object_class, PROP_SRC_X,
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g_param_spec_double ("src-x", NULL, NULL,
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0, GIMP_MAX_IMAGE_SIZE,
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0.0,
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GIMP_PARAM_READWRITE));
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g_object_class_install_property (object_class, PROP_SRC_Y,
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g_param_spec_double ("src-y", NULL, NULL,
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0, GIMP_MAX_IMAGE_SIZE,
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0.0,
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GIMP_PARAM_READWRITE));
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}
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static void
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gimp_source_core_init (GimpSourceCore *source_core)
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{
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source_core->set_source = FALSE;
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source_core->src_drawable = NULL;
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source_core->src_x = 0.0;
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source_core->src_y = 0.0;
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source_core->orig_src_x = 0.0;
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source_core->orig_src_y = 0.0;
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source_core->offset_x = 0.0;
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source_core->offset_y = 0.0;
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source_core->first_stroke = TRUE;
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}
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static void
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gimp_source_core_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GimpSourceCore *source_core = GIMP_SOURCE_CORE (object);
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switch (property_id)
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{
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case PROP_SRC_DRAWABLE:
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gimp_source_core_set_src_drawable (source_core,
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g_value_get_object (value));
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break;
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case PROP_SRC_X:
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source_core->src_x = g_value_get_double (value);
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break;
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case PROP_SRC_Y:
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source_core->src_y = g_value_get_double (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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gimp_source_core_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GimpSourceCore *source_core = GIMP_SOURCE_CORE (object);
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switch (property_id)
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{
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case PROP_SRC_DRAWABLE:
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g_value_set_object (value, source_core->src_drawable);
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break;
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case PROP_SRC_X:
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g_value_set_int (value, source_core->src_x);
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break;
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case PROP_SRC_Y:
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g_value_set_int (value, source_core->src_y);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static gboolean
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gimp_source_core_start (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpCoords *coords,
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GError **error)
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{
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GimpSourceCore *source_core = GIMP_SOURCE_CORE (paint_core);
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GimpSourceOptions *options = GIMP_SOURCE_OPTIONS (paint_options);
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if (! GIMP_PAINT_CORE_CLASS (parent_class)->start (paint_core, drawable,
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paint_options, coords,
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error))
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{
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return FALSE;
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}
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paint_core->use_saved_proj = FALSE;
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if (! source_core->set_source && options->use_source)
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{
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if (! source_core->src_drawable)
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{
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g_set_error (error, 0, 0, _("Set a source image first."));
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return FALSE;
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}
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if (options->sample_merged &&
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gimp_item_get_image (GIMP_ITEM (source_core->src_drawable)) ==
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gimp_item_get_image (GIMP_ITEM (drawable)))
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{
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paint_core->use_saved_proj = TRUE;
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}
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}
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return TRUE;
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}
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static void
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gimp_source_core_paint (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpPaintState paint_state,
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guint32 time)
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{
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GimpSourceCore *source_core = GIMP_SOURCE_CORE (paint_core);
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GimpSourceOptions *options = GIMP_SOURCE_OPTIONS (paint_options);
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switch (paint_state)
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{
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case GIMP_PAINT_STATE_INIT:
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if (source_core->set_source)
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{
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gimp_source_core_set_src_drawable (source_core, drawable);
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source_core->src_x = paint_core->cur_coords.x;
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source_core->src_y = paint_core->cur_coords.y;
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source_core->first_stroke = TRUE;
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}
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else if (options->align_mode == GIMP_SOURCE_ALIGN_NO)
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{
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source_core->orig_src_x = source_core->src_x;
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source_core->orig_src_y = source_core->src_y;
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source_core->first_stroke = TRUE;
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}
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break;
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case GIMP_PAINT_STATE_MOTION:
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if (source_core->set_source)
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{
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/* If the control key is down, move the src target and return */
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source_core->src_x = paint_core->cur_coords.x;
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source_core->src_y = paint_core->cur_coords.y;
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source_core->first_stroke = TRUE;
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}
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else
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{
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/* otherwise, update the target */
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gint dest_x;
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gint dest_y;
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dest_x = paint_core->cur_coords.x;
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dest_y = paint_core->cur_coords.y;
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if (options->align_mode == GIMP_SOURCE_ALIGN_REGISTERED)
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{
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source_core->offset_x = 0;
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source_core->offset_y = 0;
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}
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else if (options->align_mode == GIMP_SOURCE_ALIGN_FIXED)
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{
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source_core->offset_x = source_core->src_x - dest_x;
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source_core->offset_y = source_core->src_y - dest_y;
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}
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else if (source_core->first_stroke)
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{
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source_core->offset_x = source_core->src_x - dest_x;
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source_core->offset_y = source_core->src_y - dest_y;
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source_core->first_stroke = FALSE;
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}
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source_core->src_x = dest_x + source_core->offset_x;
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source_core->src_y = dest_y + source_core->offset_y;
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gimp_source_core_motion (source_core, drawable, paint_options);
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}
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break;
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case GIMP_PAINT_STATE_FINISH:
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if (options->align_mode == GIMP_SOURCE_ALIGN_NO &&
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! source_core->first_stroke)
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{
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source_core->src_x = source_core->orig_src_x;
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source_core->src_y = source_core->orig_src_y;
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}
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break;
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default:
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break;
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}
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g_object_notify (G_OBJECT (source_core), "src-x");
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g_object_notify (G_OBJECT (source_core), "src-y");
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}
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void
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gimp_source_core_motion (GimpSourceCore *source_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options)
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{
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GimpPaintCore *paint_core = GIMP_PAINT_CORE (source_core);
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GimpSourceOptions *options = GIMP_SOURCE_OPTIONS (paint_options);
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GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
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GimpPickable *src_pickable = NULL;
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PixelRegion srcPR;
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gint src_offset_x;
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gint src_offset_y;
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TempBuf *paint_area;
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gint paint_area_offset_x;
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gint paint_area_offset_y;
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gint paint_area_width;
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gint paint_area_height;
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gdouble opacity;
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opacity = gimp_paint_options_get_fade (paint_options, image,
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paint_core->pixel_dist);
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if (opacity == 0.0)
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return;
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src_offset_x = source_core->offset_x;
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src_offset_y = source_core->offset_y;
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if (options->use_source)
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{
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src_pickable = GIMP_PICKABLE (source_core->src_drawable);
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if (options->sample_merged)
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{
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GimpImage *src_image = gimp_pickable_get_image (src_pickable);
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gint off_x, off_y;
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src_pickable = GIMP_PICKABLE (src_image->projection);
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gimp_item_offsets (GIMP_ITEM (source_core->src_drawable),
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&off_x, &off_y);
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src_offset_x += off_x;
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src_offset_y += off_y;
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}
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gimp_pickable_flush (src_pickable);
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}
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paint_area = gimp_paint_core_get_paint_area (paint_core, drawable,
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paint_options);
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if (! paint_area)
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return;
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paint_area_offset_x = 0;
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paint_area_offset_y = 0;
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paint_area_width = paint_area->width;
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paint_area_height = paint_area->height;
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if (options->use_source &&
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! GIMP_SOURCE_CORE_GET_CLASS (source_core)->get_source (source_core,
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drawable,
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paint_options,
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src_pickable,
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src_offset_x,
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src_offset_y,
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paint_area,
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&paint_area_offset_x,
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&paint_area_offset_y,
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&paint_area_width,
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&paint_area_height,
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&srcPR))
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{
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return;
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}
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/* Set the paint area to transparent */
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temp_buf_data_clear (paint_area);
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GIMP_SOURCE_CORE_GET_CLASS (source_core)->motion (source_core,
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drawable,
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paint_options,
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opacity,
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src_pickable,
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&srcPR,
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src_offset_x,
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src_offset_y,
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paint_area,
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paint_area_offset_x,
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paint_area_offset_y,
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paint_area_width,
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paint_area_height);
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}
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static gboolean
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gimp_source_core_real_get_source (GimpSourceCore *source_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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GimpPickable *src_pickable,
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gint src_offset_x,
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gint src_offset_y,
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TempBuf *paint_area,
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gint *paint_area_offset_x,
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gint *paint_area_offset_y,
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gint *paint_area_width,
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gint *paint_area_height,
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PixelRegion *srcPR)
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{
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GimpSourceOptions *options = GIMP_SOURCE_OPTIONS (paint_options);
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GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
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GimpImage *src_image = gimp_pickable_get_image (src_pickable);
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TileManager *src_tiles = gimp_pickable_get_tiles (src_pickable);
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gint x1, y1;
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gint x2, y2;
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x1 = CLAMP (paint_area->x + src_offset_x,
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0, tile_manager_width (src_tiles));
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y1 = CLAMP (paint_area->y + src_offset_y,
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0, tile_manager_height (src_tiles));
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x2 = CLAMP (paint_area->x + src_offset_x + paint_area->width,
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0, tile_manager_width (src_tiles));
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y2 = CLAMP (paint_area->y + src_offset_y + paint_area->height,
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0, tile_manager_height (src_tiles));
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if (!(x2 - x1) || !(y2 - y1))
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return FALSE;
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/* If the source image is different from the destination,
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* then we should copy straight from the source image
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* to the canvas.
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* Otherwise, we need a call to get_orig_image to make sure
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* we get a copy of the unblemished (offset) image
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*/
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if (( options->sample_merged && (src_image != image)) ||
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(! options->sample_merged && (source_core->src_drawable != drawable)))
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{
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pixel_region_init (srcPR, src_tiles,
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x1, y1, x2 - x1, y2 - y1, FALSE);
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}
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else
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{
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TempBuf *orig;
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/* get the original image */
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if (options->sample_merged)
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orig = gimp_paint_core_get_orig_proj (GIMP_PAINT_CORE (source_core),
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src_pickable,
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x1, y1, x2, y2);
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else
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orig = gimp_paint_core_get_orig_image (GIMP_PAINT_CORE (source_core),
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GIMP_DRAWABLE (src_pickable),
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x1, y1, x2, y2);
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pixel_region_init_temp_buf (srcPR, orig,
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0, 0, x2 - x1, y2 - y1);
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}
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*paint_area_offset_x = x1 - (paint_area->x + src_offset_x);
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*paint_area_offset_y = y1 - (paint_area->y + src_offset_y);
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*paint_area_width = x2 - x1;
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*paint_area_height = y2 - y1;
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return TRUE;
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}
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static void
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gimp_source_core_src_drawable_removed (GimpDrawable *drawable,
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GimpSourceCore *source_core)
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{
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if (drawable == source_core->src_drawable)
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{
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source_core->src_drawable = NULL;
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}
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g_signal_handlers_disconnect_by_func (drawable,
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gimp_source_core_src_drawable_removed,
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source_core);
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}
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static void
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gimp_source_core_set_src_drawable (GimpSourceCore *source_core,
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|
GimpDrawable *drawable)
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|
{
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|
if (source_core->src_drawable == drawable)
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return;
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|
|
|
if (source_core->src_drawable)
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g_signal_handlers_disconnect_by_func (source_core->src_drawable,
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gimp_source_core_src_drawable_removed,
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|
source_core);
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|
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|
source_core->src_drawable = drawable;
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|
|
|
if (source_core->src_drawable)
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|
g_signal_connect (source_core->src_drawable, "removed",
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|
G_CALLBACK (gimp_source_core_src_drawable_removed),
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|
source_core);
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|
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|
g_object_notify (G_OBJECT (source_core), "src-drawable");
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|
}
|