/* 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 .
*/
#include "config.h"
#include
#include
#include
#include "libgimpcolor/gimpcolor.h"
#include "libgimpmath/gimpmath.h"
#include "libgimpbase/gimpbase.h"
#include "paint-types.h"
#include "gegl/gimp-gegl-utils.h"
#include "core/gimp.h"
#include "core/gimp-palettes.h"
#include "core/gimpbrush.h"
#include "core/gimpdrawable.h"
#include "core/gimpdynamics.h"
#include "core/gimpgradient.h"
#include "core/gimpimage.h"
#include "core/gimpsymmetry.h"
#include "core/gimptempbuf.h"
#include "gimppaintbrush.h"
#include "gimppaintoptions.h"
#include "gimp-intl.h"
static void gimp_paintbrush_paint (GimpPaintCore *paint_core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
GimpSymmetry *sym,
GimpPaintState paint_state,
guint32 time);
G_DEFINE_TYPE (GimpPaintbrush, gimp_paintbrush, GIMP_TYPE_BRUSH_CORE)
void
gimp_paintbrush_register (Gimp *gimp,
GimpPaintRegisterCallback callback)
{
(* callback) (gimp,
GIMP_TYPE_PAINTBRUSH,
GIMP_TYPE_PAINT_OPTIONS,
"gimp-paintbrush",
_("Paintbrush"),
"gimp-tool-paintbrush");
}
static void
gimp_paintbrush_class_init (GimpPaintbrushClass *klass)
{
GimpPaintCoreClass *paint_core_class = GIMP_PAINT_CORE_CLASS (klass);
GimpBrushCoreClass *brush_core_class = GIMP_BRUSH_CORE_CLASS (klass);
paint_core_class->paint = gimp_paintbrush_paint;
brush_core_class->handles_changing_brush = TRUE;
}
static void
gimp_paintbrush_init (GimpPaintbrush *paintbrush)
{
}
static void
gimp_paintbrush_paint (GimpPaintCore *paint_core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
GimpSymmetry *sym,
GimpPaintState paint_state,
guint32 time)
{
switch (paint_state)
{
case GIMP_PAINT_STATE_INIT:
{
GimpContext *context = GIMP_CONTEXT (paint_options);
GimpBrushCore *brush_core = GIMP_BRUSH_CORE (paint_core);
GimpDynamics *dynamics;
dynamics = gimp_context_get_dynamics (GIMP_CONTEXT (paint_options));
if (! gimp_dynamics_is_output_enabled (dynamics, GIMP_DYNAMICS_OUTPUT_COLOR) &&
(! brush_core->brush || ! gimp_brush_get_pixmap (brush_core->brush)))
{
/* We don't save gradient color history and
* pixmap brushes have no color to save.
*/
GimpRGB foreground;
gimp_context_get_foreground (context, &foreground);
gimp_palettes_add_color_history (context->gimp,
&foreground);
}
}
break;
case GIMP_PAINT_STATE_MOTION:
_gimp_paintbrush_motion (paint_core, drawable, paint_options,
sym, GIMP_OPACITY_OPAQUE);
break;
default:
break;
}
}
void
_gimp_paintbrush_motion (GimpPaintCore *paint_core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
GimpSymmetry *sym,
gdouble opacity)
{
GimpBrushCore *brush_core = GIMP_BRUSH_CORE (paint_core);
GimpContext *context = GIMP_CONTEXT (paint_options);
GimpDynamics *dynamics = brush_core->dynamics;
GimpImage *image;
GimpRGB gradient_color;
GeglBuffer *paint_buffer;
gint paint_buffer_x;
gint paint_buffer_y;
GimpPaintApplicationMode paint_appl_mode;
gdouble fade_point;
gdouble grad_point;
gdouble force;
const GimpCoords *coords;
GeglNode *op;
gint n_strokes;
gint i;
image = gimp_item_get_image (GIMP_ITEM (drawable));
fade_point = gimp_paint_options_get_fade (paint_options, image,
paint_core->pixel_dist);
coords = gimp_symmetry_get_origin (sym);
/* Some settings are based on the original stroke. */
opacity *= gimp_dynamics_get_linear_value (dynamics,
GIMP_DYNAMICS_OUTPUT_OPACITY,
coords,
paint_options,
fade_point);
if (opacity == 0.0)
return;
paint_appl_mode = paint_options->application_mode;
grad_point = gimp_dynamics_get_linear_value (dynamics,
GIMP_DYNAMICS_OUTPUT_COLOR,
coords,
paint_options,
fade_point);
if (GIMP_BRUSH_CORE_GET_CLASS (brush_core)->handles_transforming_brush)
{
gimp_brush_core_eval_transform_dynamics (brush_core,
drawable,
paint_options,
coords);
}
n_strokes = gimp_symmetry_get_size (sym);
for (i = 0; i < n_strokes; i++)
{
gint paint_width, paint_height;
coords = gimp_symmetry_get_coords (sym, i);
paint_buffer = gimp_paint_core_get_paint_buffer (paint_core, drawable,
paint_options, coords,
&paint_buffer_x,
&paint_buffer_y,
&paint_width,
&paint_height);
if (! paint_buffer)
continue;
op = gimp_symmetry_get_operation (sym, i,
paint_width,
paint_height);
if (gimp_paint_options_get_gradient_color (paint_options, image,
grad_point,
paint_core->pixel_dist,
&gradient_color))
{
/* optionally take the color from the current gradient */
GeglColor *color;
opacity *= gradient_color.a;
gimp_rgb_set_alpha (&gradient_color, GIMP_OPACITY_OPAQUE);
color = gimp_gegl_color_new (&gradient_color);
gegl_buffer_set_color (paint_buffer, NULL, color);
g_object_unref (color);
paint_appl_mode = GIMP_PAINT_INCREMENTAL;
}
else if (brush_core->brush && gimp_brush_get_pixmap (brush_core->brush))
{
/* otherwise check if the brush has a pixmap and use that to
* color the area
*/
gimp_brush_core_color_area_with_pixmap (brush_core, drawable,
coords, op,
paint_buffer,
paint_buffer_x,
paint_buffer_y,
gimp_paint_options_get_brush_mode (paint_options));
paint_appl_mode = GIMP_PAINT_INCREMENTAL;
}
else
{
/* otherwise fill the area with the foreground color */
GimpRGB foreground;
GeglColor *color;
gimp_context_get_foreground (context, &foreground);
color = gimp_gegl_color_new (&foreground);
gegl_buffer_set_color (paint_buffer, NULL, color);
g_object_unref (color);
}
if (gimp_dynamics_is_output_enabled (dynamics, GIMP_DYNAMICS_OUTPUT_FORCE))
force = gimp_dynamics_get_linear_value (dynamics,
GIMP_DYNAMICS_OUTPUT_FORCE,
coords,
paint_options,
fade_point);
else
force = paint_options->brush_force;
/* finally, let the brush core paste the colored area on the canvas */
gimp_brush_core_paste_canvas (brush_core, drawable,
coords,
MIN (opacity, GIMP_OPACITY_OPAQUE),
gimp_context_get_opacity (context),
gimp_context_get_paint_mode (context),
gimp_paint_options_get_brush_mode (paint_options),
force,
paint_appl_mode, op);
}
}