mirror of https://github.com/GNOME/gimp.git
299 lines
6.9 KiB
C
299 lines
6.9 KiB
C
/* The GIMP -- an 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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "gimpbrush.h"
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#include "gimpbrushlist.h"
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#include "gimpsignal.h"
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#include "gimprc.h"
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#include "brush_header.h"
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#include "libgimp/gimpintl.h"
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enum{
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DIRTY,
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RENAME,
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LAST_SIGNAL
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};
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static GimpBrush *gimp_brush_select_brush (PaintCore *paint_core);
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static gboolean gimp_brush_want_null_motion (PaintCore *paint_core);
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static guint gimp_brush_signals[LAST_SIGNAL];
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static GimpObjectClass* parent_class;
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static void
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gimp_brush_destroy(GtkObject *object)
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{
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GimpBrush* brush=GIMP_BRUSH(object);
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if (brush->filename)
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g_free(brush->filename);
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if (brush->name)
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g_free(brush->name);
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if (brush->mask)
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temp_buf_free(brush->mask);
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GTK_OBJECT_CLASS(parent_class)->destroy (object);
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}
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static void
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gimp_brush_class_init (GimpBrushClass *klass)
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{
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GtkObjectClass *object_class;
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GtkType type;
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object_class = GTK_OBJECT_CLASS(klass);
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parent_class = gtk_type_class (gimp_object_get_type ());
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type=object_class->type;
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object_class->destroy = gimp_brush_destroy;
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klass->select_brush = gimp_brush_select_brush;
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klass->want_null_motion = gimp_brush_want_null_motion;
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gimp_brush_signals[DIRTY] =
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gimp_signal_new ("dirty", GTK_RUN_FIRST, type, 0, gimp_sigtype_void);
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gimp_brush_signals[RENAME] =
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gimp_signal_new ("rename", GTK_RUN_FIRST, type, 0, gimp_sigtype_void);
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gtk_object_class_add_signals (object_class, gimp_brush_signals, LAST_SIGNAL);
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}
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void
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gimp_brush_init(GimpBrush *brush)
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{
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brush->filename = NULL;
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brush->name = NULL;
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brush->spacing = 20;
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brush->mask = NULL;
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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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GtkType
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gimp_brush_get_type (void)
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{
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static GtkType type = 0;
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if(!type)
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{
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static const GtkTypeInfo info = {
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"GimpBrush",
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sizeof (GimpBrush),
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sizeof (GimpBrushClass),
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(GtkClassInitFunc) gimp_brush_class_init,
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(GtkObjectInitFunc) gimp_brush_init,
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/* reserved_1 */ NULL,
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/* reserved_2 */ NULL,
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(GtkClassInitFunc) NULL
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};
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type = gtk_type_unique (gimp_object_get_type (), &info);
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}
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return type;
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}
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GimpBrush *
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gimp_brush_new (char *filename)
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{
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GimpBrush *brush=GIMP_BRUSH(gtk_type_new(gimp_brush_get_type ()));
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gimp_brush_load(brush, filename);
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return brush;
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}
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static GimpBrush *
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gimp_brush_select_brush (PaintCore *paint_core)
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{
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return paint_core->brush;
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}
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static gboolean
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gimp_brush_want_null_motion (PaintCore *paint_core)
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{
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return TRUE;
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}
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TempBuf *
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gimp_brush_get_mask (GimpBrush *brush)
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{
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g_return_val_if_fail(GIMP_IS_BRUSH(brush), NULL);
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return brush->mask;
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}
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char *
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gimp_brush_get_name (GimpBrush *brush)
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{
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g_return_val_if_fail(GIMP_IS_BRUSH(brush), NULL);
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return brush->name;
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}
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void
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gimp_brush_set_name (GimpBrush *brush,
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char *name)
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{
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g_return_if_fail(GIMP_IS_BRUSH(brush));
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if (strcmp(brush->name, name) == 0)
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return;
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if (brush->name)
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g_free(brush->name);
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brush->name = g_strdup(name);
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gtk_signal_emit(GTK_OBJECT(brush), gimp_brush_signals[RENAME]);
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}
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int
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gimp_brush_get_spacing (GimpBrush *brush)
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{
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g_return_val_if_fail (brush != NULL, 0);
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g_return_val_if_fail (GIMP_IS_BRUSH (brush), 0);
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return brush->spacing;
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}
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void
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gimp_brush_set_spacing (GimpBrush *brush,
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int spacing)
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{
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g_return_if_fail (brush != NULL);
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g_return_if_fail (GIMP_IS_BRUSH (brush));
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brush->spacing = spacing;
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}
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void
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gimp_brush_load (GimpBrush *brush,
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char *filename)
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{
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FILE * fp;
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brush->filename = g_strdup (filename);
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/* Open the requested file */
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if (! (fp = fopen (filename, "rb")))
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{
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gimp_object_destroy (brush);
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return;
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}
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gimp_brush_load_brush(brush,fp,filename);
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/* Clean up */
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fclose (fp);
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/* Swap the brush to disk (if we're being stingy with memory) */
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if (stingy_memory_use)
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temp_buf_swap (brush->mask);
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}
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int
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gimp_brush_load_brush (GimpBrush *brush,
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FILE *fp,
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char *filename)
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{
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int bn_size;
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unsigned char buf [sz_BrushHeader];
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BrushHeader header;
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unsigned int * hp;
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int i;
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/* Read in the header size */
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if ((fread (buf, 1, sz_BrushHeader, fp)) < sz_BrushHeader)
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{
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fclose (fp);
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gimp_object_destroy (brush);
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return 0;
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}
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/* rearrange the bytes in each unsigned int */
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hp = (unsigned int *) &header;
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for (i = 0; i < (sz_BrushHeader / 4); i++)
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hp [i] = (buf [i * 4] << 24) + (buf [i * 4 + 1] << 16) +
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(buf [i * 4 + 2] << 8) + (buf [i * 4 + 3]);
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/* Check for correct file format */
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if (header.magic_number != GBRUSH_MAGIC)
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{
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if (header.version != 1)
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{
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fclose (fp);
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gimp_object_destroy (brush);
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return 0;
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}
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}
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if (header.version == 1)
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{
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/* If this is a version 1 brush, set the fp back 8 bytes */
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fseek (fp, -8, SEEK_CUR);
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header.header_size += 8;
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/* spacing is not defined in version 1 */
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header.spacing = 25;
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}
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/* Read in the brush name */
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if ((bn_size = (header.header_size - sz_BrushHeader)))
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{
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brush->name = (char *) g_malloc (sizeof (char) * bn_size);
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if ((fread (brush->name, 1, bn_size, fp)) < bn_size)
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{
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g_message (_("Error in GIMP brush file...aborting."));
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fclose (fp);
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gimp_object_destroy (brush);
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return 0;
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}
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}
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else
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brush->name = g_strdup (_("Unnamed"));
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switch(header.version)
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{
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case 1:
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case 2:
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/* Get a new brush mask */
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brush->mask = temp_buf_new (header.width, header.height, header.bytes,
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0, 0, NULL);
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brush->spacing = header.spacing;
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/* set up spacing axis */
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brush->x_axis.x = header.width / 2.0;
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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 = header.height / 2.0;
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/* Read the brush mask data */
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if ((fread (temp_buf_data (brush->mask), 1, header.width * header.height,
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fp)) < header.width * header.height)
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g_message (_("GIMP brush file appears to be truncated."));
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break;
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default:
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g_message (_("Unknown brush format version #%d in \"%s\"\n"),
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header.version, filename);
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fclose (fp);
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gimp_object_destroy (brush);
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return 0;
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}
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return 1;
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}
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