mirror of https://github.com/GNOME/gimp.git
780 lines
24 KiB
C
780 lines
24 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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#include <glib-object.h>
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#include <cairo.h>
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#include "libgimpbase/gimpbase.h"
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#include "libgimpmath/gimpmath.h"
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#include "core-types.h"
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#include "base/temp-buf.h"
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#include "gimpbezierdesc.h"
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#include "gimpbrush.h"
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#include "gimpbrush-boundary.h"
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#include "gimpbrush-load.h"
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#include "gimpbrush-transform.h"
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#include "gimpbrushcache.h"
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#include "gimpbrushgenerated.h"
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#include "gimpmarshal.h"
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#include "gimptagged.h"
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#include "gimp-intl.h"
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enum
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{
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SPACING_CHANGED,
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LAST_SIGNAL
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};
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enum
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{
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PROP_0,
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PROP_SPACING
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};
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static void gimp_brush_tagged_iface_init (GimpTaggedInterface *iface);
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static void gimp_brush_finalize (GObject *object);
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static void gimp_brush_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_brush_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 gint64 gimp_brush_get_memsize (GimpObject *object,
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gint64 *gui_size);
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static gboolean gimp_brush_get_size (GimpViewable *viewable,
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gint *width,
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gint *height);
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static TempBuf * gimp_brush_get_new_preview (GimpViewable *viewable,
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GimpContext *context,
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gint width,
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gint height);
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static gchar * gimp_brush_get_description (GimpViewable *viewable,
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gchar **tooltip);
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static void gimp_brush_dirty (GimpData *data);
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static const gchar * gimp_brush_get_extension (GimpData *data);
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static void gimp_brush_real_begin_use (GimpBrush *brush);
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static void gimp_brush_real_end_use (GimpBrush *brush);
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static GimpBrush * gimp_brush_real_select_brush (GimpBrush *brush,
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const GimpCoords *last_coords,
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const GimpCoords *current_coords);
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static gboolean gimp_brush_real_want_null_motion (GimpBrush *brush,
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const GimpCoords *last_coords,
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const GimpCoords *current_coords);
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static gchar * gimp_brush_get_checksum (GimpTagged *tagged);
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G_DEFINE_TYPE_WITH_CODE (GimpBrush, gimp_brush, GIMP_TYPE_DATA,
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G_IMPLEMENT_INTERFACE (GIMP_TYPE_TAGGED,
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gimp_brush_tagged_iface_init))
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#define parent_class gimp_brush_parent_class
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static guint brush_signals[LAST_SIGNAL] = { 0 };
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static void
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gimp_brush_class_init (GimpBrushClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GimpObjectClass *gimp_object_class = GIMP_OBJECT_CLASS (klass);
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GimpViewableClass *viewable_class = GIMP_VIEWABLE_CLASS (klass);
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GimpDataClass *data_class = GIMP_DATA_CLASS (klass);
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brush_signals[SPACING_CHANGED] =
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g_signal_new ("spacing-changed",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GimpBrushClass, spacing_changed),
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NULL, NULL,
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gimp_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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object_class->finalize = gimp_brush_finalize;
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object_class->get_property = gimp_brush_get_property;
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object_class->set_property = gimp_brush_set_property;
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gimp_object_class->get_memsize = gimp_brush_get_memsize;
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viewable_class->default_stock_id = "gimp-tool-paintbrush";
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viewable_class->get_size = gimp_brush_get_size;
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viewable_class->get_new_preview = gimp_brush_get_new_preview;
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viewable_class->get_description = gimp_brush_get_description;
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data_class->dirty = gimp_brush_dirty;
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data_class->get_extension = gimp_brush_get_extension;
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klass->begin_use = gimp_brush_real_begin_use;
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klass->end_use = gimp_brush_real_end_use;
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klass->select_brush = gimp_brush_real_select_brush;
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klass->want_null_motion = gimp_brush_real_want_null_motion;
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klass->transform_size = gimp_brush_real_transform_size;
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klass->transform_mask = gimp_brush_real_transform_mask;
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klass->transform_pixmap = gimp_brush_real_transform_pixmap;
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klass->transform_boundary = gimp_brush_real_transform_boundary;
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klass->spacing_changed = NULL;
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g_object_class_install_property (object_class, PROP_SPACING,
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g_param_spec_double ("spacing", NULL,
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_("Brush Spacing"),
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1.0, 5000.0, 20.0,
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GIMP_PARAM_READWRITE |
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G_PARAM_CONSTRUCT));
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}
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static void
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gimp_brush_tagged_iface_init (GimpTaggedInterface *iface)
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{
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iface->get_checksum = gimp_brush_get_checksum;
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}
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static void
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gimp_brush_init (GimpBrush *brush)
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{
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brush->mask = NULL;
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brush->pixmap = NULL;
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brush->spacing = 20;
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brush->x_axis.x = 15.0;
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brush->x_axis.y = 0.0;
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brush->y_axis.x = 0.0;
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brush->y_axis.y = 15.0;
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}
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static void
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gimp_brush_finalize (GObject *object)
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{
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GimpBrush *brush = GIMP_BRUSH (object);
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if (brush->mask)
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{
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temp_buf_free (brush->mask);
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brush->mask = NULL;
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}
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if (brush->pixmap)
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{
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temp_buf_free (brush->pixmap);
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brush->pixmap = NULL;
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}
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if (brush->mask_cache)
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{
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g_object_unref (brush->mask_cache);
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brush->mask_cache = NULL;
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}
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if (brush->pixmap_cache)
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{
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g_object_unref (brush->pixmap_cache);
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brush->pixmap_cache = NULL;
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}
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if (brush->boundary_cache)
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{
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g_object_unref (brush->boundary_cache);
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brush->boundary_cache = NULL;
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}
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gimp_brush_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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GimpBrush *brush = GIMP_BRUSH (object);
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switch (property_id)
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{
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case PROP_SPACING:
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gimp_brush_set_spacing (brush, 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_brush_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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GimpBrush *brush = GIMP_BRUSH (object);
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switch (property_id)
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{
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case PROP_SPACING:
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g_value_set_double (value, brush->spacing);
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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 gint64
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gimp_brush_get_memsize (GimpObject *object,
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gint64 *gui_size)
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{
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GimpBrush *brush = GIMP_BRUSH (object);
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gint64 memsize = 0;
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memsize += temp_buf_get_memsize (brush->mask);
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memsize += temp_buf_get_memsize (brush->pixmap);
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return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
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gui_size);
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}
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static gboolean
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gimp_brush_get_size (GimpViewable *viewable,
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gint *width,
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gint *height)
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{
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GimpBrush *brush = GIMP_BRUSH (viewable);
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*width = brush->mask->width;
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*height = brush->mask->height;
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return TRUE;
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}
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static TempBuf *
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gimp_brush_get_new_preview (GimpViewable *viewable,
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GimpContext *context,
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gint width,
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gint height)
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{
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GimpBrush *brush = GIMP_BRUSH (viewable);
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const TempBuf *mask_buf = NULL;
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gboolean free_mask = FALSE;
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const TempBuf *pixmap_buf = NULL;
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TempBuf *return_buf = NULL;
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gint mask_width;
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gint mask_height;
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guchar transp[4] = { 0, 0, 0, 0 };
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guchar *mask;
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guchar *buf;
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gint x, y;
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gboolean scaled = FALSE;
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mask_buf = brush->mask;
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pixmap_buf = brush->pixmap;
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mask_width = mask_buf->width;
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mask_height = mask_buf->height;
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if (mask_width > width || mask_height > height)
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{
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gdouble ratio_x = (gdouble) width / (gdouble) mask_width;
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gdouble ratio_y = (gdouble) height / (gdouble) mask_height;
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gdouble scale = MIN (ratio_x, ratio_y);
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if (scale != 1.0)
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{
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gimp_brush_begin_use (brush);
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mask_buf = gimp_brush_transform_mask (brush, scale,
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0.0, 0.0, 1.0);
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if (! mask_buf)
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{
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mask_buf = temp_buf_new (1, 1, 1, 0, 0, transp);
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free_mask = TRUE;
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}
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if (pixmap_buf)
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pixmap_buf = gimp_brush_transform_pixmap (brush, scale,
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0.0, 0.0, 1.0);
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mask_width = mask_buf->width;
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mask_height = mask_buf->height;
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scaled = TRUE;
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}
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}
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return_buf = temp_buf_new (mask_width, mask_height, 4, 0, 0, transp);
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mask = temp_buf_get_data (mask_buf);
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buf = temp_buf_get_data (return_buf);
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if (pixmap_buf)
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{
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guchar *pixmap = temp_buf_get_data (pixmap_buf);
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for (y = 0; y < mask_height; y++)
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{
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for (x = 0; x < mask_width ; x++)
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{
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*buf++ = *pixmap++;
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*buf++ = *pixmap++;
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*buf++ = *pixmap++;
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*buf++ = *mask++;
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}
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}
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}
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else
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{
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for (y = 0; y < mask_height; y++)
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{
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for (x = 0; x < mask_width ; x++)
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{
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*buf++ = 0;
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*buf++ = 0;
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*buf++ = 0;
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*buf++ = *mask++;
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}
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}
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}
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if (scaled)
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{
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if (free_mask)
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temp_buf_free ((TempBuf *) mask_buf);
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gimp_brush_end_use (brush);
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}
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return return_buf;
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}
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static gchar *
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gimp_brush_get_description (GimpViewable *viewable,
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gchar **tooltip)
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{
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GimpBrush *brush = GIMP_BRUSH (viewable);
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return g_strdup_printf ("%s (%d × %d)",
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gimp_object_get_name (brush),
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brush->mask->width,
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brush->mask->height);
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}
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static void
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gimp_brush_dirty (GimpData *data)
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{
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GimpBrush *brush = GIMP_BRUSH (data);
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if (brush->mask_cache)
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gimp_brush_cache_clear (brush->mask_cache);
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if (brush->pixmap_cache)
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gimp_brush_cache_clear (brush->pixmap_cache);
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if (brush->boundary_cache)
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gimp_brush_cache_clear (brush->boundary_cache);
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GIMP_DATA_CLASS (parent_class)->dirty (data);
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}
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static const gchar *
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gimp_brush_get_extension (GimpData *data)
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{
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return GIMP_BRUSH_FILE_EXTENSION;
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}
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static void
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gimp_brush_real_begin_use (GimpBrush *brush)
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{
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brush->mask_cache =
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gimp_brush_cache_new ((GDestroyNotify) temp_buf_free, 'M', 'm');
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brush->pixmap_cache =
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gimp_brush_cache_new ((GDestroyNotify) temp_buf_free, 'P', 'p');
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brush->boundary_cache =
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gimp_brush_cache_new ((GDestroyNotify) gimp_bezier_desc_free, 'B', 'b');
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}
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static void
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gimp_brush_real_end_use (GimpBrush *brush)
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{
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g_object_unref (brush->mask_cache);
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brush->mask_cache = NULL;
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g_object_unref (brush->pixmap_cache);
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brush->pixmap_cache = NULL;
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g_object_unref (brush->boundary_cache);
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brush->boundary_cache = NULL;
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}
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static GimpBrush *
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gimp_brush_real_select_brush (GimpBrush *brush,
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const GimpCoords *last_coords,
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const GimpCoords *current_coords)
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{
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return brush;
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}
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static gboolean
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gimp_brush_real_want_null_motion (GimpBrush *brush,
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const GimpCoords *last_coords,
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const GimpCoords *current_coords)
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{
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return TRUE;
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}
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static gchar *
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gimp_brush_get_checksum (GimpTagged *tagged)
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{
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GimpBrush *brush = GIMP_BRUSH (tagged);
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gchar *checksum_string = NULL;
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if (brush->mask)
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{
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GChecksum *checksum = g_checksum_new (G_CHECKSUM_MD5);
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g_checksum_update (checksum, temp_buf_get_data (brush->mask), temp_buf_get_data_size (brush->mask));
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if (brush->pixmap)
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g_checksum_update (checksum, temp_buf_get_data (brush->pixmap), temp_buf_get_data_size (brush->pixmap));
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g_checksum_update (checksum, (const guchar *) &brush->spacing, sizeof (brush->spacing));
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g_checksum_update (checksum, (const guchar *) &brush->x_axis, sizeof (brush->x_axis));
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g_checksum_update (checksum, (const guchar *) &brush->y_axis, sizeof (brush->y_axis));
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checksum_string = g_strdup (g_checksum_get_string (checksum));
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g_checksum_free (checksum);
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}
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return checksum_string;
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}
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/* public functions */
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GimpData *
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gimp_brush_new (GimpContext *context,
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const gchar *name)
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{
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g_return_val_if_fail (name != NULL, NULL);
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return gimp_brush_generated_new (name,
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GIMP_BRUSH_GENERATED_CIRCLE,
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5.0, 2, 0.5, 1.0, 0.0);
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}
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GimpData *
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gimp_brush_get_standard (GimpContext *context)
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{
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static GimpData *standard_brush = NULL;
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if (! standard_brush)
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{
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standard_brush = gimp_brush_new (context, "Standard");
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gimp_data_clean (standard_brush);
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gimp_data_make_internal (standard_brush, "gimp-brush-standard");
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g_object_add_weak_pointer (G_OBJECT (standard_brush),
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(gpointer *) &standard_brush);
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}
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return standard_brush;
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}
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void
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gimp_brush_begin_use (GimpBrush *brush)
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{
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g_return_if_fail (GIMP_IS_BRUSH (brush));
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brush->use_count++;
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if (brush->use_count == 1)
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GIMP_BRUSH_GET_CLASS (brush)->begin_use (brush);
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}
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void
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gimp_brush_end_use (GimpBrush *brush)
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{
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g_return_if_fail (GIMP_IS_BRUSH (brush));
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g_return_if_fail (brush->use_count > 0);
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brush->use_count--;
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if (brush->use_count == 0)
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GIMP_BRUSH_GET_CLASS (brush)->end_use (brush);
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}
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GimpBrush *
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gimp_brush_select_brush (GimpBrush *brush,
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const GimpCoords *last_coords,
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const GimpCoords *current_coords)
|
||
{
|
||
g_return_val_if_fail (GIMP_IS_BRUSH (brush), NULL);
|
||
g_return_val_if_fail (last_coords != NULL, NULL);
|
||
g_return_val_if_fail (current_coords != NULL, NULL);
|
||
|
||
return GIMP_BRUSH_GET_CLASS (brush)->select_brush (brush,
|
||
last_coords,
|
||
current_coords);
|
||
}
|
||
|
||
gboolean
|
||
gimp_brush_want_null_motion (GimpBrush *brush,
|
||
const GimpCoords *last_coords,
|
||
const GimpCoords *current_coords)
|
||
{
|
||
g_return_val_if_fail (GIMP_IS_BRUSH (brush), FALSE);
|
||
g_return_val_if_fail (last_coords != NULL, FALSE);
|
||
g_return_val_if_fail (current_coords != NULL, FALSE);
|
||
|
||
return GIMP_BRUSH_GET_CLASS (brush)->want_null_motion (brush,
|
||
last_coords,
|
||
current_coords);
|
||
}
|
||
|
||
void
|
||
gimp_brush_transform_size (GimpBrush *brush,
|
||
gdouble scale,
|
||
gdouble aspect_ratio,
|
||
gdouble angle,
|
||
gint *width,
|
||
gint *height)
|
||
{
|
||
g_return_if_fail (GIMP_IS_BRUSH (brush));
|
||
g_return_if_fail (scale > 0.0);
|
||
g_return_if_fail (width != NULL);
|
||
g_return_if_fail (height != NULL);
|
||
|
||
if (scale == 1.0 &&
|
||
aspect_ratio == 0.0 &&
|
||
((angle == 0.0) || (angle == 0.5) || (angle == 1.0)))
|
||
{
|
||
*width = brush->mask->width;
|
||
*height = brush->mask->height;
|
||
|
||
return;
|
||
}
|
||
|
||
GIMP_BRUSH_GET_CLASS (brush)->transform_size (brush,
|
||
scale, aspect_ratio, angle,
|
||
width, height);
|
||
}
|
||
|
||
const TempBuf *
|
||
gimp_brush_transform_mask (GimpBrush *brush,
|
||
gdouble scale,
|
||
gdouble aspect_ratio,
|
||
gdouble angle,
|
||
gdouble hardness)
|
||
{
|
||
const TempBuf *mask;
|
||
gint width;
|
||
gint height;
|
||
|
||
g_return_val_if_fail (GIMP_IS_BRUSH (brush), NULL);
|
||
g_return_val_if_fail (scale > 0.0, NULL);
|
||
|
||
gimp_brush_transform_size (brush,
|
||
scale, aspect_ratio, angle,
|
||
&width, &height);
|
||
|
||
mask = gimp_brush_cache_get (brush->mask_cache,
|
||
width, height,
|
||
scale, aspect_ratio, angle, hardness);
|
||
|
||
if (! mask)
|
||
{
|
||
if (scale == 1.0 &&
|
||
aspect_ratio == 0.0 &&
|
||
angle == 0.0 &&
|
||
hardness == 1.0)
|
||
{
|
||
mask = temp_buf_copy (brush->mask, NULL);
|
||
}
|
||
else
|
||
{
|
||
mask = GIMP_BRUSH_GET_CLASS (brush)->transform_mask (brush,
|
||
scale,
|
||
aspect_ratio,
|
||
angle,
|
||
hardness);
|
||
}
|
||
|
||
gimp_brush_cache_add (brush->mask_cache,
|
||
(gpointer) mask,
|
||
width, height,
|
||
scale, aspect_ratio, angle, hardness);
|
||
}
|
||
|
||
return mask;
|
||
}
|
||
|
||
const TempBuf *
|
||
gimp_brush_transform_pixmap (GimpBrush *brush,
|
||
gdouble scale,
|
||
gdouble aspect_ratio,
|
||
gdouble angle,
|
||
gdouble hardness)
|
||
{
|
||
const TempBuf *pixmap;
|
||
gint width;
|
||
gint height;
|
||
|
||
g_return_val_if_fail (GIMP_IS_BRUSH (brush), NULL);
|
||
g_return_val_if_fail (brush->pixmap != NULL, NULL);
|
||
g_return_val_if_fail (scale > 0.0, NULL);
|
||
|
||
gimp_brush_transform_size (brush,
|
||
scale, aspect_ratio, angle,
|
||
&width, &height);
|
||
|
||
pixmap = gimp_brush_cache_get (brush->pixmap_cache,
|
||
width, height,
|
||
scale, aspect_ratio, angle, hardness);
|
||
|
||
if (! pixmap)
|
||
{
|
||
if (scale == 1.0 &&
|
||
aspect_ratio == 0.0 &&
|
||
angle == 0.0 &&
|
||
hardness == 1.0)
|
||
{
|
||
pixmap = temp_buf_copy (brush->pixmap, NULL);
|
||
}
|
||
else
|
||
{
|
||
pixmap = GIMP_BRUSH_GET_CLASS (brush)->transform_pixmap (brush,
|
||
scale,
|
||
aspect_ratio,
|
||
angle,
|
||
hardness);
|
||
}
|
||
|
||
gimp_brush_cache_add (brush->pixmap_cache,
|
||
(gpointer) pixmap,
|
||
width, height,
|
||
scale, aspect_ratio, angle, hardness);
|
||
}
|
||
|
||
return pixmap;
|
||
}
|
||
|
||
const GimpBezierDesc *
|
||
gimp_brush_transform_boundary (GimpBrush *brush,
|
||
gdouble scale,
|
||
gdouble aspect_ratio,
|
||
gdouble angle,
|
||
gdouble hardness,
|
||
gint *width,
|
||
gint *height)
|
||
{
|
||
const GimpBezierDesc *boundary;
|
||
|
||
g_return_val_if_fail (GIMP_IS_BRUSH (brush), NULL);
|
||
g_return_val_if_fail (scale > 0.0, NULL);
|
||
g_return_val_if_fail (width != NULL, NULL);
|
||
g_return_val_if_fail (height != NULL, NULL);
|
||
|
||
gimp_brush_transform_size (brush,
|
||
scale, aspect_ratio, angle,
|
||
width, height);
|
||
|
||
boundary = gimp_brush_cache_get (brush->boundary_cache,
|
||
*width, *height,
|
||
scale, aspect_ratio, angle, hardness);
|
||
|
||
if (! boundary)
|
||
{
|
||
boundary = GIMP_BRUSH_GET_CLASS (brush)->transform_boundary (brush,
|
||
scale,
|
||
aspect_ratio,
|
||
angle,
|
||
hardness,
|
||
width,
|
||
height);
|
||
|
||
/* while the brush mask is always at least 1x1 pixels, its
|
||
* outline can correctly be NULL
|
||
*
|
||
* FIXME: make the cache handle NULL things when it is
|
||
* properly implemented
|
||
*/
|
||
if (boundary)
|
||
gimp_brush_cache_add (brush->boundary_cache,
|
||
(gpointer) boundary,
|
||
*width, *height,
|
||
scale, aspect_ratio, angle, hardness);
|
||
}
|
||
|
||
return boundary;
|
||
}
|
||
|
||
TempBuf *
|
||
gimp_brush_get_mask (const GimpBrush *brush)
|
||
{
|
||
g_return_val_if_fail (brush != NULL, NULL);
|
||
g_return_val_if_fail (GIMP_IS_BRUSH (brush), NULL);
|
||
|
||
return brush->mask;
|
||
}
|
||
|
||
TempBuf *
|
||
gimp_brush_get_pixmap (const GimpBrush *brush)
|
||
{
|
||
g_return_val_if_fail (brush != NULL, NULL);
|
||
g_return_val_if_fail (GIMP_IS_BRUSH (brush), NULL);
|
||
|
||
return brush->pixmap;
|
||
}
|
||
|
||
gint
|
||
gimp_brush_get_spacing (const GimpBrush *brush)
|
||
{
|
||
g_return_val_if_fail (GIMP_IS_BRUSH (brush), 0);
|
||
|
||
return brush->spacing;
|
||
}
|
||
|
||
void
|
||
gimp_brush_set_spacing (GimpBrush *brush,
|
||
gint spacing)
|
||
{
|
||
g_return_if_fail (GIMP_IS_BRUSH (brush));
|
||
|
||
if (brush->spacing != spacing)
|
||
{
|
||
brush->spacing = spacing;
|
||
|
||
g_signal_emit (brush, brush_signals[SPACING_CHANGED], 0);
|
||
g_object_notify (G_OBJECT (brush), "spacing");
|
||
}
|
||
}
|