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-rw-r--r--app/paint/gimpdodgeburn.c201
1 files changed, 201 insertions, 0 deletions
diff --git a/app/paint/gimpdodgeburn.c b/app/paint/gimpdodgeburn.c
new file mode 100644
index 0000000..cdfc176
--- /dev/null
+++ b/app/paint/gimpdodgeburn.c
@@ -0,0 +1,201 @@
+/* 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 <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <gegl.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpmath/gimpmath.h"
+
+#include "paint-types.h"
+
+#include "gegl/gimp-gegl-loops.h"
+
+#include "core/gimp.h"
+#include "core/gimpdrawable.h"
+#include "core/gimpdynamics.h"
+#include "core/gimpimage.h"
+#include "core/gimpsymmetry.h"
+
+#include "gimpdodgeburn.h"
+#include "gimpdodgeburnoptions.h"
+
+#include "gimp-intl.h"
+
+
+static void gimp_dodge_burn_paint (GimpPaintCore *paint_core,
+ GimpDrawable *drawable,
+ GimpPaintOptions *paint_options,
+ GimpSymmetry *sym,
+ GimpPaintState paint_state,
+ guint32 time);
+static void gimp_dodge_burn_motion (GimpPaintCore *paint_core,
+ GimpDrawable *drawable,
+ GimpPaintOptions *paint_options,
+ GimpSymmetry *sym);
+
+
+G_DEFINE_TYPE (GimpDodgeBurn, gimp_dodge_burn, GIMP_TYPE_BRUSH_CORE)
+
+#define parent_class gimp_dodge_burn_parent_class
+
+
+void
+gimp_dodge_burn_register (Gimp *gimp,
+ GimpPaintRegisterCallback callback)
+{
+ (* callback) (gimp,
+ GIMP_TYPE_DODGE_BURN,
+ GIMP_TYPE_DODGE_BURN_OPTIONS,
+ "gimp-dodge-burn",
+ _("Dodge/Burn"),
+ "gimp-tool-dodge");
+}
+
+static void
+gimp_dodge_burn_class_init (GimpDodgeBurnClass *klass)
+{
+ GimpPaintCoreClass *paint_core_class = GIMP_PAINT_CORE_CLASS (klass);
+ GimpBrushCoreClass *brush_core_class = GIMP_BRUSH_CORE_CLASS (klass);
+
+ paint_core_class->paint = gimp_dodge_burn_paint;
+
+ brush_core_class->handles_changing_brush = TRUE;
+}
+
+static void
+gimp_dodge_burn_init (GimpDodgeBurn *dodgeburn)
+{
+}
+
+static void
+gimp_dodge_burn_paint (GimpPaintCore *paint_core,
+ GimpDrawable *drawable,
+ GimpPaintOptions *paint_options,
+ GimpSymmetry *sym,
+ GimpPaintState paint_state,
+ guint32 time)
+{
+ switch (paint_state)
+ {
+ case GIMP_PAINT_STATE_INIT:
+ break;
+
+ case GIMP_PAINT_STATE_MOTION:
+ gimp_dodge_burn_motion (paint_core, drawable, paint_options, sym);
+ break;
+
+ case GIMP_PAINT_STATE_FINISH:
+ break;
+ }
+}
+
+static void
+gimp_dodge_burn_motion (GimpPaintCore *paint_core,
+ GimpDrawable *drawable,
+ GimpPaintOptions *paint_options,
+ GimpSymmetry *sym)
+{
+ GimpBrushCore *brush_core = GIMP_BRUSH_CORE (paint_core);
+ GimpDodgeBurnOptions *options = GIMP_DODGE_BURN_OPTIONS (paint_options);
+ GimpContext *context = GIMP_CONTEXT (paint_options);
+ GimpDynamics *dynamics = GIMP_BRUSH_CORE (paint_core)->dynamics;
+ GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
+ GeglBuffer *src_buffer;
+ GeglBuffer *paint_buffer;
+ gint paint_buffer_x;
+ gint paint_buffer_y;
+ gdouble fade_point;
+ gdouble opacity;
+ gdouble force;
+ const GimpCoords *coords;
+ gint paint_width, paint_height;
+ gint n_strokes;
+ gint i;
+
+ fade_point = gimp_paint_options_get_fade (paint_options, image,
+ paint_core->pixel_dist);
+
+ coords = gimp_symmetry_get_origin (sym);
+ opacity = gimp_dynamics_get_linear_value (dynamics,
+ GIMP_DYNAMICS_OUTPUT_OPACITY,
+ coords,
+ paint_options,
+ fade_point);
+ if (opacity == 0.0)
+ return;
+
+ if (paint_options->application_mode == GIMP_PAINT_CONSTANT)
+ src_buffer = gimp_paint_core_get_orig_image (paint_core);
+ else
+ src_buffer = gimp_drawable_get_buffer (drawable);
+
+ 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++)
+ {
+ coords = gimp_symmetry_get_coords (sym, i);
+
+ gimp_brush_core_eval_transform_symmetry (brush_core, sym, i);
+
+ paint_buffer = gimp_paint_core_get_paint_buffer (paint_core, drawable,
+ paint_options,
+ GIMP_LAYER_MODE_NORMAL,
+ coords,
+ &paint_buffer_x,
+ &paint_buffer_y,
+ &paint_width,
+ &paint_height);
+ if (! paint_buffer)
+ continue;
+
+ /* DodgeBurn the region */
+ gimp_gegl_dodgeburn (src_buffer,
+ GEGL_RECTANGLE (paint_buffer_x,
+ paint_buffer_y,
+ gegl_buffer_get_width (paint_buffer),
+ gegl_buffer_get_height (paint_buffer)),
+ paint_buffer,
+ GEGL_RECTANGLE (0, 0, 0, 0),
+ options->exposure / 100.0,
+ options->type,
+ options->mode);
+
+ 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;
+
+ /* Replace the newly dodgedburned area (paint_area) to the image */
+ gimp_brush_core_replace_canvas (GIMP_BRUSH_CORE (paint_core), drawable,
+ coords,
+ MIN (opacity, GIMP_OPACITY_OPAQUE),
+ gimp_context_get_opacity (context),
+ gimp_paint_options_get_brush_mode (paint_options),
+ force,
+ paint_options->application_mode);
+ }
+}