mirror of https://github.com/GNOME/gimp.git
556 lines
20 KiB
C
556 lines
20 KiB
C
/* GIMP - The GNU Image Manipulation Program
|
|
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <gegl.h>
|
|
|
|
#include "libgimpbase/gimpbase.h"
|
|
|
|
#include "paint-types.h"
|
|
|
|
#include "base/temp-buf.h"
|
|
|
|
#include "gegl/gimp-gegl-utils.h"
|
|
|
|
#include "core/gimp.h"
|
|
#include "core/gimpdrawable.h"
|
|
#include "core/gimpdynamics.h"
|
|
#include "core/gimpdynamicsoutput.h"
|
|
#include "core/gimperror.h"
|
|
#include "core/gimpimage.h"
|
|
#include "core/gimppickable.h"
|
|
|
|
#include "gimpsourcecore.h"
|
|
#include "gimpsourceoptions.h"
|
|
|
|
#include "gimp-intl.h"
|
|
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_SRC_DRAWABLE,
|
|
PROP_SRC_X,
|
|
PROP_SRC_Y
|
|
};
|
|
|
|
|
|
static void gimp_source_core_set_property (GObject *object,
|
|
guint property_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec);
|
|
static void gimp_source_core_get_property (GObject *object,
|
|
guint property_id,
|
|
GValue *value,
|
|
GParamSpec *pspec);
|
|
|
|
static gboolean gimp_source_core_start (GimpPaintCore *paint_core,
|
|
GimpDrawable *drawable,
|
|
GimpPaintOptions *paint_options,
|
|
const GimpCoords *coords,
|
|
GError **error);
|
|
static void gimp_source_core_paint (GimpPaintCore *paint_core,
|
|
GimpDrawable *drawable,
|
|
GimpPaintOptions *paint_options,
|
|
const GimpCoords *coords,
|
|
GimpPaintState paint_state,
|
|
guint32 time);
|
|
|
|
#if 0
|
|
static void gimp_source_core_motion (GimpSourceCore *source_core,
|
|
GimpDrawable *drawable,
|
|
GimpPaintOptions *paint_options,
|
|
const GimpCoords *coords);
|
|
#endif
|
|
|
|
static GeglBuffer *
|
|
gimp_source_core_real_get_source (GimpSourceCore *source_core,
|
|
GimpDrawable *drawable,
|
|
GimpPaintOptions *paint_options,
|
|
GimpPickable *src_pickable,
|
|
gint src_offset_x,
|
|
gint src_offset_y,
|
|
TempBuf *paint_area,
|
|
gint *paint_area_offset_x,
|
|
gint *paint_area_offset_y,
|
|
gint *paint_area_width,
|
|
gint *paint_area_height,
|
|
GeglRectangle *src_rect);
|
|
|
|
static void gimp_source_core_set_src_drawable (GimpSourceCore *source_core,
|
|
GimpDrawable *drawable);
|
|
|
|
|
|
G_DEFINE_TYPE (GimpSourceCore, gimp_source_core, GIMP_TYPE_BRUSH_CORE)
|
|
|
|
#define parent_class gimp_source_core_parent_class
|
|
|
|
|
|
static void
|
|
gimp_source_core_class_init (GimpSourceCoreClass *klass)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
GimpPaintCoreClass *paint_core_class = GIMP_PAINT_CORE_CLASS (klass);
|
|
GimpBrushCoreClass *brush_core_class = GIMP_BRUSH_CORE_CLASS (klass);
|
|
|
|
object_class->set_property = gimp_source_core_set_property;
|
|
object_class->get_property = gimp_source_core_get_property;
|
|
|
|
paint_core_class->start = gimp_source_core_start;
|
|
paint_core_class->paint = gimp_source_core_paint;
|
|
|
|
brush_core_class->handles_changing_brush = TRUE;
|
|
|
|
klass->get_source = gimp_source_core_real_get_source;
|
|
klass->motion = NULL;
|
|
|
|
g_object_class_install_property (object_class, PROP_SRC_DRAWABLE,
|
|
g_param_spec_object ("src-drawable",
|
|
NULL, NULL,
|
|
GIMP_TYPE_DRAWABLE,
|
|
GIMP_PARAM_READWRITE));
|
|
|
|
g_object_class_install_property (object_class, PROP_SRC_X,
|
|
g_param_spec_double ("src-x", NULL, NULL,
|
|
0, GIMP_MAX_IMAGE_SIZE,
|
|
0.0,
|
|
GIMP_PARAM_READWRITE));
|
|
|
|
g_object_class_install_property (object_class, PROP_SRC_Y,
|
|
g_param_spec_double ("src-y", NULL, NULL,
|
|
0, GIMP_MAX_IMAGE_SIZE,
|
|
0.0,
|
|
GIMP_PARAM_READWRITE));
|
|
}
|
|
|
|
static void
|
|
gimp_source_core_init (GimpSourceCore *source_core)
|
|
{
|
|
source_core->set_source = FALSE;
|
|
|
|
source_core->src_drawable = NULL;
|
|
source_core->src_x = 0.0;
|
|
source_core->src_y = 0.0;
|
|
|
|
source_core->orig_src_x = 0.0;
|
|
source_core->orig_src_y = 0.0;
|
|
|
|
source_core->offset_x = 0.0;
|
|
source_core->offset_y = 0.0;
|
|
source_core->first_stroke = TRUE;
|
|
}
|
|
|
|
static void
|
|
gimp_source_core_set_property (GObject *object,
|
|
guint property_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GimpSourceCore *source_core = GIMP_SOURCE_CORE (object);
|
|
|
|
switch (property_id)
|
|
{
|
|
case PROP_SRC_DRAWABLE:
|
|
gimp_source_core_set_src_drawable (source_core,
|
|
g_value_get_object (value));
|
|
break;
|
|
case PROP_SRC_X:
|
|
source_core->src_x = g_value_get_double (value);
|
|
break;
|
|
case PROP_SRC_Y:
|
|
source_core->src_y = g_value_get_double (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gimp_source_core_get_property (GObject *object,
|
|
guint property_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GimpSourceCore *source_core = GIMP_SOURCE_CORE (object);
|
|
|
|
switch (property_id)
|
|
{
|
|
case PROP_SRC_DRAWABLE:
|
|
g_value_set_object (value, source_core->src_drawable);
|
|
break;
|
|
case PROP_SRC_X:
|
|
g_value_set_int (value, source_core->src_x);
|
|
break;
|
|
case PROP_SRC_Y:
|
|
g_value_set_int (value, source_core->src_y);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gimp_source_core_start (GimpPaintCore *paint_core,
|
|
GimpDrawable *drawable,
|
|
GimpPaintOptions *paint_options,
|
|
const GimpCoords *coords,
|
|
GError **error)
|
|
{
|
|
GimpSourceCore *source_core = GIMP_SOURCE_CORE (paint_core);
|
|
GimpSourceOptions *options = GIMP_SOURCE_OPTIONS (paint_options);
|
|
|
|
if (! GIMP_PAINT_CORE_CLASS (parent_class)->start (paint_core, drawable,
|
|
paint_options, coords,
|
|
error))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
paint_core->use_saved_proj = FALSE;
|
|
|
|
if (! source_core->set_source && options->use_source)
|
|
{
|
|
if (! source_core->src_drawable)
|
|
{
|
|
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
|
|
_("Set a source image first."));
|
|
return FALSE;
|
|
}
|
|
|
|
if (options->sample_merged &&
|
|
gimp_item_get_image (GIMP_ITEM (source_core->src_drawable)) ==
|
|
gimp_item_get_image (GIMP_ITEM (drawable)))
|
|
{
|
|
paint_core->use_saved_proj = TRUE;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gimp_source_core_paint (GimpPaintCore *paint_core,
|
|
GimpDrawable *drawable,
|
|
GimpPaintOptions *paint_options,
|
|
const GimpCoords *coords,
|
|
GimpPaintState paint_state,
|
|
guint32 time)
|
|
{
|
|
GimpSourceCore *source_core = GIMP_SOURCE_CORE (paint_core);
|
|
GimpSourceOptions *options = GIMP_SOURCE_OPTIONS (paint_options);
|
|
|
|
switch (paint_state)
|
|
{
|
|
case GIMP_PAINT_STATE_INIT:
|
|
if (source_core->set_source)
|
|
{
|
|
gimp_source_core_set_src_drawable (source_core, drawable);
|
|
|
|
source_core->src_x = coords->x;
|
|
source_core->src_y = coords->y;
|
|
|
|
source_core->first_stroke = TRUE;
|
|
}
|
|
else if (options->align_mode == GIMP_SOURCE_ALIGN_NO)
|
|
{
|
|
source_core->orig_src_x = source_core->src_x;
|
|
source_core->orig_src_y = source_core->src_y;
|
|
|
|
source_core->first_stroke = TRUE;
|
|
}
|
|
break;
|
|
|
|
case GIMP_PAINT_STATE_MOTION:
|
|
if (source_core->set_source)
|
|
{
|
|
/* If the control key is down, move the src target and return */
|
|
|
|
source_core->src_x = coords->x;
|
|
source_core->src_y = coords->y;
|
|
|
|
source_core->first_stroke = TRUE;
|
|
}
|
|
else
|
|
{
|
|
/* otherwise, update the target */
|
|
|
|
gint dest_x;
|
|
gint dest_y;
|
|
|
|
dest_x = coords->x;
|
|
dest_y = coords->y;
|
|
|
|
if (options->align_mode == GIMP_SOURCE_ALIGN_REGISTERED)
|
|
{
|
|
source_core->offset_x = 0;
|
|
source_core->offset_y = 0;
|
|
}
|
|
else if (options->align_mode == GIMP_SOURCE_ALIGN_FIXED)
|
|
{
|
|
source_core->offset_x = source_core->src_x - dest_x;
|
|
source_core->offset_y = source_core->src_y - dest_y;
|
|
}
|
|
else if (source_core->first_stroke)
|
|
{
|
|
source_core->offset_x = source_core->src_x - dest_x;
|
|
source_core->offset_y = source_core->src_y - dest_y;
|
|
|
|
source_core->first_stroke = FALSE;
|
|
}
|
|
|
|
source_core->src_x = dest_x + source_core->offset_x;
|
|
source_core->src_y = dest_y + source_core->offset_y;
|
|
|
|
gimp_source_core_motion (source_core, drawable, paint_options, coords);
|
|
}
|
|
break;
|
|
|
|
case GIMP_PAINT_STATE_FINISH:
|
|
if (options->align_mode == GIMP_SOURCE_ALIGN_NO &&
|
|
! source_core->first_stroke)
|
|
{
|
|
source_core->src_x = source_core->orig_src_x;
|
|
source_core->src_y = source_core->orig_src_y;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
g_object_notify (G_OBJECT (source_core), "src-x");
|
|
g_object_notify (G_OBJECT (source_core), "src-y");
|
|
}
|
|
|
|
void
|
|
gimp_source_core_motion (GimpSourceCore *source_core,
|
|
GimpDrawable *drawable,
|
|
GimpPaintOptions *paint_options,
|
|
const GimpCoords *coords)
|
|
|
|
{
|
|
GimpPaintCore *paint_core = GIMP_PAINT_CORE (source_core);
|
|
GimpSourceOptions *options = GIMP_SOURCE_OPTIONS (paint_options);
|
|
GimpDynamics *dynamics = GIMP_BRUSH_CORE (paint_core)->dynamics;
|
|
GimpDynamicsOutput *opacity_output;
|
|
GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
|
|
GimpPickable *src_pickable = NULL;
|
|
GeglBuffer *src_buffer = NULL;
|
|
GeglRectangle src_rect;
|
|
gint src_offset_x;
|
|
gint src_offset_y;
|
|
TempBuf *paint_area;
|
|
gint paint_area_offset_x;
|
|
gint paint_area_offset_y;
|
|
gint paint_area_width;
|
|
gint paint_area_height;
|
|
gdouble fade_point;
|
|
gdouble opacity;
|
|
|
|
opacity_output = gimp_dynamics_get_output (dynamics,
|
|
GIMP_DYNAMICS_OUTPUT_OPACITY);
|
|
|
|
fade_point = gimp_paint_options_get_fade (paint_options, image,
|
|
paint_core->pixel_dist);
|
|
|
|
opacity = gimp_dynamics_output_get_linear_value (opacity_output,
|
|
coords,
|
|
paint_options,
|
|
fade_point);
|
|
if (opacity == 0.0)
|
|
return;
|
|
|
|
src_offset_x = source_core->offset_x;
|
|
src_offset_y = source_core->offset_y;
|
|
|
|
if (options->use_source)
|
|
{
|
|
src_pickable = GIMP_PICKABLE (source_core->src_drawable);
|
|
|
|
if (options->sample_merged)
|
|
{
|
|
GimpImage *src_image = gimp_pickable_get_image (src_pickable);
|
|
gint off_x, off_y;
|
|
|
|
src_pickable = GIMP_PICKABLE (gimp_image_get_projection (src_image));
|
|
|
|
gimp_item_get_offset (GIMP_ITEM (source_core->src_drawable),
|
|
&off_x, &off_y);
|
|
|
|
src_offset_x += off_x;
|
|
src_offset_y += off_y;
|
|
}
|
|
|
|
gimp_pickable_flush (src_pickable);
|
|
}
|
|
|
|
paint_area = gimp_paint_core_get_paint_area (paint_core, drawable,
|
|
paint_options, coords);
|
|
if (! paint_area)
|
|
return;
|
|
|
|
paint_area_offset_x = 0;
|
|
paint_area_offset_y = 0;
|
|
paint_area_width = paint_area->width;
|
|
paint_area_height = paint_area->height;
|
|
|
|
if (options->use_source)
|
|
{
|
|
src_buffer =
|
|
GIMP_SOURCE_CORE_GET_CLASS (source_core)->get_source (source_core,
|
|
drawable,
|
|
paint_options,
|
|
src_pickable,
|
|
src_offset_x,
|
|
src_offset_y,
|
|
paint_area,
|
|
&paint_area_offset_x,
|
|
&paint_area_offset_y,
|
|
&paint_area_width,
|
|
&paint_area_height,
|
|
&src_rect);
|
|
if (! src_buffer)
|
|
return;
|
|
}
|
|
|
|
/* Set the paint area to transparent */
|
|
temp_buf_data_clear (paint_area);
|
|
|
|
GIMP_SOURCE_CORE_GET_CLASS (source_core)->motion (source_core,
|
|
drawable,
|
|
paint_options,
|
|
coords,
|
|
opacity,
|
|
src_pickable,
|
|
src_buffer,
|
|
&src_rect,
|
|
src_offset_x,
|
|
src_offset_y,
|
|
paint_area,
|
|
paint_area_offset_x,
|
|
paint_area_offset_y,
|
|
paint_area_width,
|
|
paint_area_height);
|
|
|
|
if (src_buffer)
|
|
g_object_unref (src_buffer);
|
|
}
|
|
|
|
static GeglBuffer *
|
|
gimp_source_core_real_get_source (GimpSourceCore *source_core,
|
|
GimpDrawable *drawable,
|
|
GimpPaintOptions *paint_options,
|
|
GimpPickable *src_pickable,
|
|
gint src_offset_x,
|
|
gint src_offset_y,
|
|
TempBuf *paint_area,
|
|
gint *paint_area_offset_x,
|
|
gint *paint_area_offset_y,
|
|
gint *paint_area_width,
|
|
gint *paint_area_height,
|
|
GeglRectangle *src_rect)
|
|
{
|
|
GimpSourceOptions *options = GIMP_SOURCE_OPTIONS (paint_options);
|
|
GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
|
|
GimpImage *src_image = gimp_pickable_get_image (src_pickable);
|
|
GeglBuffer *src_buffer = gimp_pickable_get_buffer (src_pickable);
|
|
GeglBuffer *dest_buffer;
|
|
gint x, y;
|
|
gint width, height;
|
|
|
|
if (! gimp_rectangle_intersect (paint_area->x + src_offset_x,
|
|
paint_area->y + src_offset_y,
|
|
paint_area->width,
|
|
paint_area->height,
|
|
0, 0,
|
|
gegl_buffer_get_width (src_buffer),
|
|
gegl_buffer_get_height (src_buffer),
|
|
&x, &y,
|
|
&width, &height))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
/* If the source image is different from the destination,
|
|
* then we should copy straight from the source image
|
|
* to the canvas.
|
|
* Otherwise, we need a call to get_orig_image to make sure
|
|
* we get a copy of the unblemished (offset) image
|
|
*/
|
|
if (( options->sample_merged && (src_image != image)) ||
|
|
(! options->sample_merged && (source_core->src_drawable != drawable)))
|
|
{
|
|
dest_buffer = src_buffer;
|
|
}
|
|
else
|
|
{
|
|
/* get the original image */
|
|
if (options->sample_merged)
|
|
dest_buffer = gimp_paint_core_get_orig_proj (GIMP_PAINT_CORE (source_core));
|
|
else
|
|
dest_buffer = gimp_paint_core_get_orig_image (GIMP_PAINT_CORE (source_core));
|
|
}
|
|
|
|
*paint_area_offset_x = x - (paint_area->x + src_offset_x);
|
|
*paint_area_offset_y = y - (paint_area->y + src_offset_y);
|
|
*paint_area_width = width;
|
|
*paint_area_height = height;
|
|
|
|
*src_rect = *GIMP_GEGL_RECT (x, y, width, height);
|
|
|
|
return g_object_ref (dest_buffer);
|
|
}
|
|
|
|
static void
|
|
gimp_source_core_src_drawable_removed (GimpDrawable *drawable,
|
|
GimpSourceCore *source_core)
|
|
{
|
|
if (drawable == source_core->src_drawable)
|
|
{
|
|
source_core->src_drawable = NULL;
|
|
}
|
|
|
|
g_signal_handlers_disconnect_by_func (drawable,
|
|
gimp_source_core_src_drawable_removed,
|
|
source_core);
|
|
}
|
|
|
|
static void
|
|
gimp_source_core_set_src_drawable (GimpSourceCore *source_core,
|
|
GimpDrawable *drawable)
|
|
{
|
|
if (source_core->src_drawable == drawable)
|
|
return;
|
|
|
|
if (source_core->src_drawable)
|
|
g_signal_handlers_disconnect_by_func (source_core->src_drawable,
|
|
gimp_source_core_src_drawable_removed,
|
|
source_core);
|
|
|
|
source_core->src_drawable = drawable;
|
|
|
|
if (source_core->src_drawable)
|
|
g_signal_connect (source_core->src_drawable, "removed",
|
|
G_CALLBACK (gimp_source_core_src_drawable_removed),
|
|
source_core);
|
|
|
|
g_object_notify (G_OBJECT (source_core), "src-drawable");
|
|
}
|