mirror of https://github.com/GNOME/gimp.git
566 lines
17 KiB
C
566 lines
17 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 <glib-object.h>
|
||
|
||
#include "libgimpbase/gimpbase.h"
|
||
#include "libgimpmath/gimpmath.h"
|
||
|
||
#include "core-types.h"
|
||
|
||
#include "base/temp-buf.h"
|
||
|
||
#include "gimpbrush.h"
|
||
#include "gimpbrush-load.h"
|
||
#include "gimpbrush-transform.h"
|
||
#include "gimpbrushgenerated.h"
|
||
#include "gimpmarshal.h"
|
||
#include "gimptagged.h"
|
||
|
||
#include "gimp-intl.h"
|
||
|
||
|
||
enum
|
||
{
|
||
SPACING_CHANGED,
|
||
LAST_SIGNAL
|
||
};
|
||
|
||
enum
|
||
{
|
||
PROP_0,
|
||
PROP_SPACING
|
||
};
|
||
|
||
|
||
static void gimp_brush_tagged_iface_init (GimpTaggedInterface *iface);
|
||
|
||
static void gimp_brush_set_property (GObject *object,
|
||
guint property_id,
|
||
const GValue *value,
|
||
GParamSpec *pspec);
|
||
static void gimp_brush_get_property (GObject *object,
|
||
guint property_id,
|
||
GValue *value,
|
||
GParamSpec *pspec);
|
||
static void gimp_brush_finalize (GObject *object);
|
||
|
||
static gint64 gimp_brush_get_memsize (GimpObject *object,
|
||
gint64 *gui_size);
|
||
|
||
static gboolean gimp_brush_get_size (GimpViewable *viewable,
|
||
gint *width,
|
||
gint *height);
|
||
static TempBuf * gimp_brush_get_new_preview (GimpViewable *viewable,
|
||
GimpContext *context,
|
||
gint width,
|
||
gint height);
|
||
static gchar * gimp_brush_get_description (GimpViewable *viewable,
|
||
gchar **tooltip);
|
||
static const gchar * gimp_brush_get_extension (GimpData *data);
|
||
|
||
static GimpBrush * gimp_brush_real_select_brush (GimpBrush *brush,
|
||
const GimpCoords *last_coords,
|
||
const GimpCoords *current_coords);
|
||
static gboolean gimp_brush_real_want_null_motion (GimpBrush *brush,
|
||
const GimpCoords *last_coords,
|
||
const GimpCoords *current_coords);
|
||
|
||
static gchar * gimp_brush_get_checksum (GimpTagged *tagged);
|
||
|
||
|
||
G_DEFINE_TYPE_WITH_CODE (GimpBrush, gimp_brush, GIMP_TYPE_DATA,
|
||
G_IMPLEMENT_INTERFACE (GIMP_TYPE_TAGGED,
|
||
gimp_brush_tagged_iface_init))
|
||
|
||
#define parent_class gimp_brush_parent_class
|
||
|
||
static guint brush_signals[LAST_SIGNAL] = { 0 };
|
||
|
||
|
||
static void
|
||
gimp_brush_class_init (GimpBrushClass *klass)
|
||
{
|
||
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
||
GimpObjectClass *gimp_object_class = GIMP_OBJECT_CLASS (klass);
|
||
GimpViewableClass *viewable_class = GIMP_VIEWABLE_CLASS (klass);
|
||
GimpDataClass *data_class = GIMP_DATA_CLASS (klass);
|
||
|
||
brush_signals[SPACING_CHANGED] =
|
||
g_signal_new ("spacing-changed",
|
||
G_TYPE_FROM_CLASS (klass),
|
||
G_SIGNAL_RUN_FIRST,
|
||
G_STRUCT_OFFSET (GimpBrushClass, spacing_changed),
|
||
NULL, NULL,
|
||
gimp_marshal_VOID__VOID,
|
||
G_TYPE_NONE, 0);
|
||
|
||
object_class->get_property = gimp_brush_get_property;
|
||
object_class->set_property = gimp_brush_set_property;
|
||
object_class->finalize = gimp_brush_finalize;
|
||
|
||
gimp_object_class->get_memsize = gimp_brush_get_memsize;
|
||
|
||
viewable_class->default_stock_id = "gimp-tool-paintbrush";
|
||
viewable_class->get_size = gimp_brush_get_size;
|
||
viewable_class->get_new_preview = gimp_brush_get_new_preview;
|
||
viewable_class->get_description = gimp_brush_get_description;
|
||
|
||
data_class->get_extension = gimp_brush_get_extension;
|
||
|
||
klass->select_brush = gimp_brush_real_select_brush;
|
||
klass->want_null_motion = gimp_brush_real_want_null_motion;
|
||
klass->transform_size = gimp_brush_real_transform_size;
|
||
klass->transform_mask = gimp_brush_real_transform_mask;
|
||
klass->transform_pixmap = gimp_brush_real_transform_pixmap;
|
||
klass->spacing_changed = NULL;
|
||
|
||
g_object_class_install_property (object_class, PROP_SPACING,
|
||
g_param_spec_double ("spacing", NULL,
|
||
_("Brush Spacing"),
|
||
1.0, 5000.0, 20.0,
|
||
GIMP_PARAM_READWRITE |
|
||
G_PARAM_CONSTRUCT));
|
||
}
|
||
|
||
static void
|
||
gimp_brush_tagged_iface_init (GimpTaggedInterface *iface)
|
||
{
|
||
iface->get_checksum = gimp_brush_get_checksum;
|
||
}
|
||
|
||
static void
|
||
gimp_brush_init (GimpBrush *brush)
|
||
{
|
||
brush->mask = NULL;
|
||
brush->pixmap = NULL;
|
||
|
||
brush->spacing = 20;
|
||
brush->x_axis.x = 15.0;
|
||
brush->x_axis.y = 0.0;
|
||
brush->y_axis.x = 0.0;
|
||
brush->y_axis.y = 15.0;
|
||
}
|
||
|
||
static void
|
||
gimp_brush_set_property (GObject *object,
|
||
guint property_id,
|
||
const GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GimpBrush *brush = GIMP_BRUSH (object);
|
||
|
||
switch (property_id)
|
||
{
|
||
case PROP_SPACING:
|
||
gimp_brush_set_spacing (brush, g_value_get_double (value));
|
||
break;
|
||
|
||
default:
|
||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
||
break;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gimp_brush_get_property (GObject *object,
|
||
guint property_id,
|
||
GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GimpBrush *brush = GIMP_BRUSH (object);
|
||
|
||
switch (property_id)
|
||
{
|
||
case PROP_SPACING:
|
||
g_value_set_double (value, brush->spacing);
|
||
break;
|
||
|
||
default:
|
||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
||
break;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gimp_brush_finalize (GObject *object)
|
||
{
|
||
GimpBrush *brush = GIMP_BRUSH (object);
|
||
|
||
if (brush->mask)
|
||
{
|
||
temp_buf_free (brush->mask);
|
||
brush->mask = NULL;
|
||
}
|
||
|
||
if (brush->pixmap)
|
||
{
|
||
temp_buf_free (brush->pixmap);
|
||
brush->pixmap = NULL;
|
||
}
|
||
|
||
G_OBJECT_CLASS (parent_class)->finalize (object);
|
||
}
|
||
|
||
static gint64
|
||
gimp_brush_get_memsize (GimpObject *object,
|
||
gint64 *gui_size)
|
||
{
|
||
GimpBrush *brush = GIMP_BRUSH (object);
|
||
gint64 memsize = 0;
|
||
|
||
memsize += temp_buf_get_memsize (brush->mask);
|
||
memsize += temp_buf_get_memsize (brush->pixmap);
|
||
|
||
return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
|
||
gui_size);
|
||
}
|
||
|
||
static gboolean
|
||
gimp_brush_get_size (GimpViewable *viewable,
|
||
gint *width,
|
||
gint *height)
|
||
{
|
||
GimpBrush *brush = GIMP_BRUSH (viewable);
|
||
|
||
*width = brush->mask->width;
|
||
*height = brush->mask->height;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static TempBuf *
|
||
gimp_brush_get_new_preview (GimpViewable *viewable,
|
||
GimpContext *context,
|
||
gint width,
|
||
gint height)
|
||
{
|
||
GimpBrush *brush = GIMP_BRUSH (viewable);
|
||
TempBuf *mask_buf = NULL;
|
||
TempBuf *pixmap_buf = NULL;
|
||
TempBuf *return_buf = NULL;
|
||
gint mask_width;
|
||
gint mask_height;
|
||
guchar transp[4] = { 0, 0, 0, 0 };
|
||
guchar *mask;
|
||
guchar *buf;
|
||
gint x, y;
|
||
gboolean scaled = FALSE;
|
||
|
||
mask_buf = brush->mask;
|
||
pixmap_buf = brush->pixmap;
|
||
|
||
mask_width = mask_buf->width;
|
||
mask_height = mask_buf->height;
|
||
|
||
if (mask_width > width || mask_height > height)
|
||
{
|
||
gdouble ratio_x = (gdouble) width / (gdouble) mask_width;
|
||
gdouble ratio_y = (gdouble) height / (gdouble) mask_height;
|
||
gdouble scale = MIN (ratio_x, ratio_y);
|
||
|
||
if (scale != 1.0)
|
||
{
|
||
mask_buf = gimp_brush_transform_mask (brush, scale, 1.0, 0.0);
|
||
|
||
if (! mask_buf)
|
||
mask_buf = temp_buf_new (1, 1, 1, 0, 0, transp);
|
||
|
||
if (pixmap_buf)
|
||
pixmap_buf = gimp_brush_transform_pixmap (brush, scale, 1.0, 0.0);
|
||
|
||
mask_width = mask_buf->width;
|
||
mask_height = mask_buf->height;
|
||
|
||
scaled = TRUE;
|
||
}
|
||
}
|
||
|
||
return_buf = temp_buf_new (mask_width, mask_height, 4, 0, 0, transp);
|
||
|
||
mask = temp_buf_get_data (mask_buf);
|
||
buf = temp_buf_get_data (return_buf);
|
||
|
||
if (pixmap_buf)
|
||
{
|
||
guchar *pixmap = temp_buf_get_data (pixmap_buf);
|
||
|
||
for (y = 0; y < mask_height; y++)
|
||
{
|
||
for (x = 0; x < mask_width ; x++)
|
||
{
|
||
*buf++ = *pixmap++;
|
||
*buf++ = *pixmap++;
|
||
*buf++ = *pixmap++;
|
||
*buf++ = *mask++;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
for (y = 0; y < mask_height; y++)
|
||
{
|
||
for (x = 0; x < mask_width ; x++)
|
||
{
|
||
*buf++ = 0;
|
||
*buf++ = 0;
|
||
*buf++ = 0;
|
||
*buf++ = *mask++;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (scaled)
|
||
{
|
||
temp_buf_free (mask_buf);
|
||
|
||
if (pixmap_buf)
|
||
temp_buf_free (pixmap_buf);
|
||
}
|
||
|
||
return return_buf;
|
||
}
|
||
|
||
static gchar *
|
||
gimp_brush_get_description (GimpViewable *viewable,
|
||
gchar **tooltip)
|
||
{
|
||
GimpBrush *brush = GIMP_BRUSH (viewable);
|
||
|
||
return g_strdup_printf ("%s (%d × %d)",
|
||
GIMP_OBJECT (brush)->name,
|
||
brush->mask->width,
|
||
brush->mask->height);
|
||
}
|
||
|
||
static const gchar *
|
||
gimp_brush_get_extension (GimpData *data)
|
||
{
|
||
return GIMP_BRUSH_FILE_EXTENSION;
|
||
}
|
||
|
||
static GimpBrush *
|
||
gimp_brush_real_select_brush (GimpBrush *brush,
|
||
const GimpCoords *last_coords,
|
||
const GimpCoords *current_coords)
|
||
{
|
||
return brush;
|
||
}
|
||
|
||
static gboolean
|
||
gimp_brush_real_want_null_motion (GimpBrush *brush,
|
||
const GimpCoords *last_coords,
|
||
const GimpCoords *current_coords)
|
||
{
|
||
return TRUE;
|
||
}
|
||
|
||
static gchar *
|
||
gimp_brush_get_checksum (GimpTagged *tagged)
|
||
{
|
||
GimpBrush *brush = GIMP_BRUSH (tagged);
|
||
gchar *checksum_string = NULL;
|
||
|
||
if (brush->mask)
|
||
{
|
||
GChecksum *checksum = g_checksum_new (G_CHECKSUM_MD5);
|
||
|
||
g_checksum_update (checksum, temp_buf_get_data (brush->mask), temp_buf_get_data_size (brush->mask));
|
||
if (brush->pixmap)
|
||
g_checksum_update (checksum, temp_buf_get_data (brush->pixmap), temp_buf_get_data_size (brush->pixmap));
|
||
g_checksum_update (checksum, (const guchar *) &brush->spacing, sizeof (brush->spacing));
|
||
g_checksum_update (checksum, (const guchar *) &brush->x_axis, sizeof (brush->x_axis));
|
||
g_checksum_update (checksum, (const guchar *) &brush->y_axis, sizeof (brush->y_axis));
|
||
|
||
checksum_string = g_strdup (g_checksum_get_string (checksum));
|
||
|
||
g_checksum_free (checksum);
|
||
}
|
||
|
||
return checksum_string;
|
||
}
|
||
|
||
/* public functions */
|
||
|
||
GimpData *
|
||
gimp_brush_new (const gchar *name)
|
||
{
|
||
g_return_val_if_fail (name != NULL, NULL);
|
||
|
||
return gimp_brush_generated_new (name,
|
||
GIMP_BRUSH_GENERATED_CIRCLE,
|
||
5.0, 2, 0.5, 1.0, 0.0);
|
||
}
|
||
|
||
GimpData *
|
||
gimp_brush_get_standard (void)
|
||
{
|
||
static GimpData *standard_brush = NULL;
|
||
|
||
if (! standard_brush)
|
||
{
|
||
standard_brush = gimp_brush_new ("Standard");
|
||
|
||
standard_brush->dirty = FALSE;
|
||
gimp_data_make_internal (standard_brush,
|
||
"gimp-brush-standard");
|
||
|
||
/* set ref_count to 2 --> never swap the standard brush */
|
||
g_object_ref (standard_brush);
|
||
}
|
||
|
||
return standard_brush;
|
||
}
|
||
|
||
GimpBrush *
|
||
gimp_brush_select_brush (GimpBrush *brush,
|
||
const GimpCoords *last_coords,
|
||
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 (aspect_ratio > 0.0);
|
||
g_return_if_fail (width != NULL);
|
||
g_return_if_fail (height != NULL);
|
||
|
||
if ((scale == 1.0) && ( aspect_ratio == 1.0) && ((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);
|
||
}
|
||
|
||
TempBuf *
|
||
gimp_brush_transform_mask (GimpBrush *brush,
|
||
gdouble scale,
|
||
gdouble aspect_ratio,
|
||
gdouble angle)
|
||
{
|
||
g_return_val_if_fail (GIMP_IS_BRUSH (brush), NULL);
|
||
g_return_val_if_fail (scale > 0.0, NULL);
|
||
g_return_val_if_fail (aspect_ratio > 0.0, NULL);
|
||
|
||
if ((scale == 1.0) && (aspect_ratio == 1.0) && (angle == 0.0))
|
||
return temp_buf_copy (brush->mask, NULL);
|
||
|
||
return GIMP_BRUSH_GET_CLASS (brush)->transform_mask (brush, scale, aspect_ratio, angle);
|
||
}
|
||
|
||
TempBuf *
|
||
gimp_brush_transform_pixmap (GimpBrush *brush,
|
||
gdouble scale,
|
||
gdouble aspect_ratio,
|
||
gdouble angle)
|
||
{
|
||
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);
|
||
g_return_val_if_fail (aspect_ratio > 0.0, NULL);
|
||
|
||
|
||
if ((scale == 1.0) && (aspect_ratio == 1.0) && (angle == 0.0))
|
||
return temp_buf_copy (brush->pixmap, NULL);
|
||
|
||
return GIMP_BRUSH_GET_CLASS (brush)->transform_pixmap (brush, scale, aspect_ratio, angle);
|
||
}
|
||
|
||
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;
|
||
|
||
gimp_brush_spacing_changed (brush);
|
||
g_object_notify (G_OBJECT (brush), "spacing");
|
||
}
|
||
}
|
||
|
||
void
|
||
gimp_brush_spacing_changed (GimpBrush *brush)
|
||
{
|
||
g_return_if_fail (GIMP_IS_BRUSH (brush));
|
||
|
||
g_signal_emit (brush, brush_signals[SPACING_CHANGED], 0);
|
||
}
|