mirror of https://github.com/GNOME/gimp.git
258 lines
8.6 KiB
C
258 lines
8.6 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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#ifdef HAVE_LIBMYPAINT
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#include <string.h>
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#include <cairo.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include <mypaint-brush.h>
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#include <mypaint-tiled-surface.h>
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#include <mypaint-gegl-surface.h>
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#include "libgimpmath/gimpmath.h"
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#include "libgimpcolor/gimpcolor.h"
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#include "paint-types.h"
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#include "gegl/gimp-gegl-utils.h"
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#include "config/gimpguiconfig.h" /* playground */
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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/gimpimage-undo.h"
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#include "core/gimptempbuf.h"
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#include "gimpmybrushoptions.h"
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#include "gimpmybrush.h"
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#include "gimp-intl.h"
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struct _GimpMybrushPrivate
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{
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MyPaintGeglTiledSurface *surface;
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MyPaintBrush *brush;
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};
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/* local function prototypes */
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static void gimp_mybrush_paint (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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const GimpCoords *coords,
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GimpPaintState paint_state,
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guint32 time);
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static void gimp_mybrush_motion (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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const GimpCoords *coords,
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guint32 time);
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G_DEFINE_TYPE (GimpMybrush, gimp_mybrush, GIMP_TYPE_PAINT_CORE)
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#define parent_class gimp_mybrush_parent_class
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void
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gimp_mybrush_register (Gimp *gimp,
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GimpPaintRegisterCallback callback)
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{
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if (GIMP_GUI_CONFIG (gimp->config)->playground_mybrush_tool)
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(* callback) (gimp,
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GIMP_TYPE_MYBRUSH,
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GIMP_TYPE_MYBRUSH_OPTIONS,
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"gimp-mybrush",
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_("Mybrush"),
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"gimp-tool-mybrush");
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}
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static void
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gimp_mybrush_class_init (GimpMybrushClass *klass)
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{
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GimpPaintCoreClass *paint_core_class = GIMP_PAINT_CORE_CLASS (klass);
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paint_core_class->paint = gimp_mybrush_paint;
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g_type_class_add_private (klass, sizeof (GimpMybrushPrivate));
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}
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static void
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gimp_mybrush_init (GimpMybrush *mybrush)
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{
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mybrush->private = G_TYPE_INSTANCE_GET_PRIVATE (mybrush,
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GIMP_TYPE_MYBRUSH,
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GimpMybrushPrivate);
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}
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static void
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gimp_mybrush_paint (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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const GimpCoords *coords,
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GimpPaintState paint_state,
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guint32 time)
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{
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GimpMybrush *mybrush = GIMP_MYBRUSH (paint_core);
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GimpMybrushOptions *options = GIMP_MYBRUSH_OPTIONS (paint_options);
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GeglBuffer *buffer;
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switch (paint_state)
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{
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case GIMP_PAINT_STATE_INIT:
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mybrush->private->surface = mypaint_gegl_tiled_surface_new ();
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buffer = mypaint_gegl_tiled_surface_get_buffer (mybrush->private->surface);
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buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
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gimp_item_get_width (GIMP_ITEM (drawable)),
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gimp_item_get_height (GIMP_ITEM (drawable))),
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gegl_buffer_get_format (buffer));
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gegl_buffer_copy (gimp_drawable_get_buffer (drawable), NULL,
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GEGL_ABYSS_NONE,
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buffer, NULL);
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mypaint_gegl_tiled_surface_set_buffer (mybrush->private->surface, buffer);
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g_object_unref (buffer);
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mybrush->private->brush = mypaint_brush_new ();
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mypaint_brush_from_defaults (mybrush->private->brush);
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if (options->mybrush)
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{
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gchar *string;
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gsize length;
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if (g_file_get_contents (options->mybrush,
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&string, &length, NULL))
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{
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if (! mypaint_brush_from_string (mybrush->private->brush, string))
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g_printerr ("Failed to deserialize MyPaint brush\n");
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g_free (string);
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}
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}
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mypaint_brush_new_stroke (mybrush->private->brush);
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break;
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case GIMP_PAINT_STATE_MOTION:
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gimp_mybrush_motion (paint_core, drawable, paint_options, coords, time);
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break;
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case GIMP_PAINT_STATE_FINISH:
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mypaint_surface_unref ((MyPaintSurface *) mybrush->private->surface);
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mybrush->private->surface = NULL;
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mypaint_brush_unref (mybrush->private->brush);
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mybrush->private->brush = NULL;
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break;
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}
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}
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static void
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gimp_mybrush_motion (GimpPaintCore *paint_core,
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GimpDrawable *drawable,
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GimpPaintOptions *paint_options,
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const GimpCoords *coords,
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guint32 time)
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{
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GimpMybrush *mybrush = GIMP_MYBRUSH (paint_core);
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GimpMybrushOptions *options = GIMP_MYBRUSH_OPTIONS (paint_options);
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GimpContext *context = GIMP_CONTEXT (paint_options);
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GimpComponentMask active_mask;
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GimpRGB fg;
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GimpHSV hsv;
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MyPaintRectangle rect;
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active_mask = gimp_drawable_get_active_mask (drawable);
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mypaint_brush_set_base_value (mybrush->private->brush,
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MYPAINT_BRUSH_SETTING_LOCK_ALPHA,
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(active_mask & GIMP_COMPONENT_ALPHA) ?
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FALSE : TRUE);
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gimp_context_get_foreground (context, &fg);
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gimp_rgb_to_hsv (&fg, &hsv);
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mypaint_brush_set_base_value (mybrush->private->brush,
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MYPAINT_BRUSH_SETTING_COLOR_H,
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hsv.h);
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mypaint_brush_set_base_value (mybrush->private->brush,
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MYPAINT_BRUSH_SETTING_COLOR_S,
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hsv.s);
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mypaint_brush_set_base_value (mybrush->private->brush,
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MYPAINT_BRUSH_SETTING_COLOR_V,
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hsv.v);
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mypaint_brush_set_base_value (mybrush->private->brush,
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MYPAINT_BRUSH_SETTING_OPAQUE,
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gimp_context_get_opacity (context));
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mypaint_brush_set_base_value (mybrush->private->brush,
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MYPAINT_BRUSH_SETTING_RADIUS_LOGARITHMIC,
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options->radius);
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mypaint_brush_set_base_value (mybrush->private->brush,
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MYPAINT_BRUSH_SETTING_HARDNESS,
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options->hardness);
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mypaint_surface_begin_atomic ((MyPaintSurface *) mybrush->private->surface);
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mypaint_brush_stroke_to (mybrush->private->brush,
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(MyPaintSurface *) mybrush->private->surface,
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coords->x,
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coords->y,
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coords->pressure,
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coords->xtilt,
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coords->ytilt,
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1);
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mypaint_surface_end_atomic ((MyPaintSurface *) mybrush->private->surface,
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&rect);
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g_printerr ("painted rect: %d %d %d %d\n",
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rect.x, rect.y, rect.width, rect.height);
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if (rect.width > 0 && rect.height > 0)
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{
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GeglBuffer *src;
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src = mypaint_gegl_tiled_surface_get_buffer (mybrush->private->surface);
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gegl_buffer_copy (src,
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(GeglRectangle *) &rect,
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GEGL_ABYSS_NONE,
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gimp_drawable_get_buffer (drawable),
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NULL);
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paint_core->x1 = MIN (paint_core->x1, rect.x);
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paint_core->y1 = MIN (paint_core->y1, rect.y);
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paint_core->x2 = MAX (paint_core->x2, rect.x + rect.width);
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paint_core->y2 = MAX (paint_core->y2, rect.y + rect.height);
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gimp_drawable_update (drawable, rect.x, rect.y, rect.width, rect.height);
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}
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}
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#endif
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