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Diffstat (limited to 'app/file-data/file-data-gbr.c')
| -rw-r--r-- | app/file-data/file-data-gbr.c | 417 |
1 files changed, 417 insertions, 0 deletions
diff --git a/app/file-data/file-data-gbr.c b/app/file-data/file-data-gbr.c new file mode 100644 index 0000000..63d4c0e --- /dev/null +++ b/app/file-data/file-data-gbr.c @@ -0,0 +1,417 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <cairo.h> +#include <gdk-pixbuf/gdk-pixbuf.h> +#include <gegl.h> + +#include "libgimpbase/gimpbase.h" +#include "libgimpcolor/gimpcolor.h" + +#include "core/core-types.h" + +#include "core/gimp.h" +#include "core/gimpbrush.h" +#include "core/gimpbrush-load.h" +#include "core/gimpbrush-private.h" +#include "core/gimpdrawable.h" +#include "core/gimpimage.h" +#include "core/gimplayer-new.h" +#include "core/gimpimage-resize.h" +#include "core/gimpparamspecs.h" +#include "core/gimptempbuf.h" + +#include "pdb/gimpprocedure.h" + +#include "file-data-gbr.h" + +#include "gimp-intl.h" + + +/* local function prototypes */ + +static GimpImage * file_gbr_brush_to_image (Gimp *gimp, + GimpBrush *brush); +static GimpBrush * file_gbr_image_to_brush (GimpImage *image, + GimpDrawable *drawable, + const gchar *name, + gdouble spacing); + + +/* public functions */ + +GimpValueArray * +file_gbr_load_invoker (GimpProcedure *procedure, + Gimp *gimp, + GimpContext *context, + GimpProgress *progress, + const GimpValueArray *args, + GError **error) +{ + GimpValueArray *return_vals; + GimpImage *image = NULL; + const gchar *uri; + GFile *file; + GInputStream *input; + GError *my_error = NULL; + + gimp_set_busy (gimp); + + uri = g_value_get_string (gimp_value_array_index (args, 1)); + file = g_file_new_for_uri (uri); + + input = G_INPUT_STREAM (g_file_read (file, NULL, &my_error)); + + if (input) + { + GimpBrush *brush = gimp_brush_load_brush (context, file, input, error); + + if (brush) + { + image = file_gbr_brush_to_image (gimp, brush); + g_object_unref (brush); + } + + g_object_unref (input); + } + else + { + g_propagate_prefixed_error (error, my_error, + _("Could not open '%s' for reading: "), + gimp_file_get_utf8_name (file)); + } + + g_object_unref (file); + + return_vals = gimp_procedure_get_return_values (procedure, image != NULL, + error ? *error : NULL); + + if (image) + gimp_value_set_image (gimp_value_array_index (return_vals, 1), image); + + gimp_unset_busy (gimp); + + return return_vals; +} + +GimpValueArray * +file_gbr_save_invoker (GimpProcedure *procedure, + Gimp *gimp, + GimpContext *context, + GimpProgress *progress, + const GimpValueArray *args, + GError **error) +{ + GimpValueArray *return_vals; + GimpImage *image; + GimpDrawable *drawable; + GimpBrush *brush; + const gchar *uri; + const gchar *name; + GFile *file; + gint spacing; + gboolean success; + + gimp_set_busy (gimp); + + image = gimp_value_get_image (gimp_value_array_index (args, 1), gimp); + drawable = gimp_value_get_drawable (gimp_value_array_index (args, 2), gimp); + uri = g_value_get_string (gimp_value_array_index (args, 3)); + spacing = g_value_get_int (gimp_value_array_index (args, 5)); + name = g_value_get_string (gimp_value_array_index (args, 6)); + + file = g_file_new_for_uri (uri); + + brush = file_gbr_image_to_brush (image, drawable, name, spacing); + + gimp_data_set_file (GIMP_DATA (brush), file, TRUE, TRUE); + + success = gimp_data_save (GIMP_DATA (brush), error); + + g_object_unref (brush); + g_object_unref (file); + + return_vals = gimp_procedure_get_return_values (procedure, success, + error ? *error : NULL); + + gimp_unset_busy (gimp); + + return return_vals; +} + +GimpLayer * +file_gbr_brush_to_layer (GimpImage *image, + GimpBrush *brush) +{ + GimpLayer *layer; + const Babl *format; + gboolean alpha; + gint width; + gint height; + gint image_width; + gint image_height; + GimpTempBuf *mask; + GimpTempBuf *pixmap; + GeglBuffer *buffer; + + g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL); + g_return_val_if_fail (GIMP_IS_BRUSH (brush), NULL); + + mask = gimp_brush_get_mask (brush); + pixmap = gimp_brush_get_pixmap (brush); + + if (pixmap) + alpha = TRUE; + else + alpha = FALSE; + + width = gimp_temp_buf_get_width (mask); + height = gimp_temp_buf_get_height (mask); + + image_width = gimp_image_get_width (image); + image_height = gimp_image_get_height (image); + + if (width > image_width || height > image_height) + { + gint new_width = MAX (image_width, width); + gint new_height = MAX (image_height, height); + + gimp_image_resize (image, gimp_get_user_context (image->gimp), + new_width, new_height, + (new_width - image_width) / 2, + (new_height - image_height) / 2, + NULL); + + image_width = new_width; + image_height = new_height; + } + + format = gimp_image_get_layer_format (image, alpha); + + layer = gimp_layer_new (image, width, height, format, + gimp_object_get_name (brush), + 1.0, GIMP_LAYER_MODE_NORMAL); + + gimp_item_set_offset (GIMP_ITEM (layer), + (image_width - width) / 2, + (image_height - height) / 2); + + buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (layer)); + + if (pixmap) + { + guchar *pixmap_data; + guchar *mask_data; + guchar *p; + guchar *m; + gint i; + + gegl_buffer_set (buffer, GEGL_RECTANGLE (0, 0, width, height), 0, + babl_format ("R'G'B' u8"), + gimp_temp_buf_get_data (pixmap), GEGL_AUTO_ROWSTRIDE); + + pixmap_data = gegl_buffer_linear_open (buffer, NULL, NULL, NULL); + mask_data = gimp_temp_buf_get_data (mask); + + for (i = 0, p = pixmap_data, m = mask_data; + i < width * height; + i++, p += 4, m += 1) + { + p[3] = *m; + } + + gegl_buffer_linear_close (buffer, pixmap_data); + } + else + { + guchar *mask_data = gimp_temp_buf_get_data (mask); + gint i; + + for (i = 0; i < width * height; i++) + mask_data[i] = 255 - mask_data[i]; + + gegl_buffer_set (buffer, GEGL_RECTANGLE (0, 0, width, height), 0, + babl_format ("Y' u8"), + mask_data, GEGL_AUTO_ROWSTRIDE); + } + + return layer; +} + +GimpBrush * +file_gbr_drawable_to_brush (GimpDrawable *drawable, + const GeglRectangle *rect, + const gchar *name, + gdouble spacing) +{ + GimpBrush *brush; + GeglBuffer *buffer; + GimpTempBuf *mask; + GimpTempBuf *pixmap = NULL; + gint width; + gint height; + + g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL); + g_return_val_if_fail (rect != NULL, NULL); + + buffer = gimp_drawable_get_buffer (drawable); + width = rect->width; + height = rect->height; + + brush = g_object_new (GIMP_TYPE_BRUSH, + "name", name, + "mime-type", "image/x-gimp-gbr", + "spacing", spacing, + NULL); + + mask = gimp_temp_buf_new (width, height, babl_format ("Y u8")); + + if (gimp_drawable_is_gray (drawable)) + { + guchar *m = gimp_temp_buf_get_data (mask); + gint i; + + if (gimp_drawable_has_alpha (drawable)) + { + GeglBufferIterator *iter; + GimpRGB white; + + gimp_rgba_set_uchar (&white, 255, 255, 255, 255); + + iter = gegl_buffer_iterator_new (buffer, rect, 0, + babl_format ("Y'A u8"), + GEGL_ACCESS_READ, GEGL_ABYSS_NONE, + 1); + + while (gegl_buffer_iterator_next (iter)) + { + guint8 *data = (guint8 *) iter->items[0].data; + gint j; + + for (j = 0; j < iter->length; j++) + { + GimpRGB gray; + gint x, y; + gint dest; + + gimp_rgba_set_uchar (&gray, + data[0], data[0], data[0], + data[1]); + + gimp_rgb_composite (&gray, &white, + GIMP_RGB_COMPOSITE_BEHIND); + + x = iter->items[0].roi.x + j % iter->items[0].roi.width; + y = iter->items[0].roi.y + j / iter->items[0].roi.width; + + dest = y * width + x; + + gimp_rgba_get_uchar (&gray, &m[dest], NULL, NULL, NULL); + + data += 2; + } + } + } + else + { + gegl_buffer_get (buffer, rect, 1.0, + babl_format ("Y' u8"), m, + GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE); + } + + /* invert */ + for (i = 0; i < width * height; i++) + m[i] = 255 - m[i]; + } + else + { + pixmap = gimp_temp_buf_new (width, height, babl_format ("R'G'B' u8")); + + gegl_buffer_get (buffer, rect, 1.0, + babl_format ("R'G'B' u8"), + gimp_temp_buf_get_data (pixmap), + GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE); + + gegl_buffer_get (buffer, rect, 1.0, + babl_format ("A u8"), + gimp_temp_buf_get_data (mask), + GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE); + } + + + brush->priv->mask = mask; + brush->priv->pixmap = pixmap; + + return brush; +} + + +/* private functions */ + +static GimpImage * +file_gbr_brush_to_image (Gimp *gimp, + GimpBrush *brush) +{ + GimpImage *image; + GimpLayer *layer; + const gchar *name; + GimpImageBaseType base_type; + gint width; + gint height; + GimpTempBuf *mask = gimp_brush_get_mask (brush); + GimpTempBuf *pixmap = gimp_brush_get_pixmap (brush); + GimpParasite *parasite; + + if (pixmap) + base_type = GIMP_RGB; + else + base_type = GIMP_GRAY; + + name = gimp_object_get_name (brush); + width = gimp_temp_buf_get_width (mask); + height = gimp_temp_buf_get_height (mask); + + image = gimp_image_new (gimp, width, height, base_type, + GIMP_PRECISION_U8_GAMMA); + + parasite = gimp_parasite_new ("gimp-brush-name", + GIMP_PARASITE_PERSISTENT, + strlen (name) + 1, name); + gimp_image_parasite_attach (image, parasite, FALSE); + gimp_parasite_free (parasite); + + layer = file_gbr_brush_to_layer (image, brush); + gimp_image_add_layer (image, layer, NULL, 0, FALSE); + + return image; +} + +static GimpBrush * +file_gbr_image_to_brush (GimpImage *image, + GimpDrawable *drawable, + const gchar *name, + gdouble spacing) +{ + gint width = gimp_item_get_width (GIMP_ITEM (drawable)); + gint height = gimp_item_get_height (GIMP_ITEM (drawable)); + + return file_gbr_drawable_to_brush (drawable, + GEGL_RECTANGLE (0, 0, width, height), + name, spacing); +} |