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-rw-r--r--app/operations/gimpcurvesconfig.c695
1 files changed, 695 insertions, 0 deletions
diff --git a/app/operations/gimpcurvesconfig.c b/app/operations/gimpcurvesconfig.c
new file mode 100644
index 0000000..b63bcf3
--- /dev/null
+++ b/app/operations/gimpcurvesconfig.c
@@ -0,0 +1,695 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpcurvesconfig.c
+ * Copyright (C) 2007 Michael Natterer <mitch@gimp.org>
+ *
+ * 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 <gegl.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpmath/gimpmath.h"
+#include "libgimpconfig/gimpconfig.h"
+
+#include "operations-types.h"
+
+#include "core/gimp-utils.h"
+#include "core/gimpcurve.h"
+#include "core/gimphistogram.h"
+
+#include "gimpcurvesconfig.h"
+
+#include "gimp-intl.h"
+
+
+enum
+{
+ PROP_0,
+ PROP_LINEAR,
+ PROP_CHANNEL,
+ PROP_CURVE
+};
+
+
+static void gimp_curves_config_iface_init (GimpConfigInterface *iface);
+
+static void gimp_curves_config_finalize (GObject *object);
+static void gimp_curves_config_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec);
+static void gimp_curves_config_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec);
+
+static gboolean gimp_curves_config_serialize (GimpConfig *config,
+ GimpConfigWriter *writer,
+ gpointer data);
+static gboolean gimp_curves_config_deserialize (GimpConfig *config,
+ GScanner *scanner,
+ gint nest_level,
+ gpointer data);
+static gboolean gimp_curves_config_equal (GimpConfig *a,
+ GimpConfig *b);
+static void gimp_curves_config_reset (GimpConfig *config);
+static gboolean gimp_curves_config_copy (GimpConfig *src,
+ GimpConfig *dest,
+ GParamFlags flags);
+
+static void gimp_curves_config_curve_dirty (GimpCurve *curve,
+ GimpCurvesConfig *config);
+
+
+G_DEFINE_TYPE_WITH_CODE (GimpCurvesConfig, gimp_curves_config,
+ GIMP_TYPE_OPERATION_SETTINGS,
+ G_IMPLEMENT_INTERFACE (GIMP_TYPE_CONFIG,
+ gimp_curves_config_iface_init))
+
+#define parent_class gimp_curves_config_parent_class
+
+
+static void
+gimp_curves_config_class_init (GimpCurvesConfigClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GimpViewableClass *viewable_class = GIMP_VIEWABLE_CLASS (klass);
+
+ object_class->finalize = gimp_curves_config_finalize;
+ object_class->set_property = gimp_curves_config_set_property;
+ object_class->get_property = gimp_curves_config_get_property;
+
+ viewable_class->default_icon_name = "gimp-tool-curves";
+
+ GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_LINEAR,
+ "linear",
+ _("Linear"),
+ _("Work on linear RGB"),
+ FALSE, 0);
+
+ GIMP_CONFIG_PROP_ENUM (object_class, PROP_CHANNEL,
+ "channel",
+ _("Channel"),
+ _("The affected channel"),
+ GIMP_TYPE_HISTOGRAM_CHANNEL,
+ GIMP_HISTOGRAM_VALUE, 0);
+
+ GIMP_CONFIG_PROP_OBJECT (object_class, PROP_CURVE,
+ "curve",
+ _("Curve"),
+ _("Curve"),
+ GIMP_TYPE_CURVE,
+ GIMP_CONFIG_PARAM_AGGREGATE);
+}
+
+static void
+gimp_curves_config_iface_init (GimpConfigInterface *iface)
+{
+ iface->serialize = gimp_curves_config_serialize;
+ iface->deserialize = gimp_curves_config_deserialize;
+ iface->equal = gimp_curves_config_equal;
+ iface->reset = gimp_curves_config_reset;
+ iface->copy = gimp_curves_config_copy;
+}
+
+static void
+gimp_curves_config_init (GimpCurvesConfig *self)
+{
+ GimpHistogramChannel channel;
+
+ for (channel = GIMP_HISTOGRAM_VALUE;
+ channel <= GIMP_HISTOGRAM_ALPHA;
+ channel++)
+ {
+ self->curve[channel] = GIMP_CURVE (gimp_curve_new ("curves config"));
+
+ g_signal_connect_object (self->curve[channel], "dirty",
+ G_CALLBACK (gimp_curves_config_curve_dirty),
+ self, 0);
+ }
+
+ gimp_config_reset (GIMP_CONFIG (self));
+}
+
+static void
+gimp_curves_config_finalize (GObject *object)
+{
+ GimpCurvesConfig *self = GIMP_CURVES_CONFIG (object);
+ GimpHistogramChannel channel;
+
+ for (channel = GIMP_HISTOGRAM_VALUE;
+ channel <= GIMP_HISTOGRAM_ALPHA;
+ channel++)
+ {
+ g_object_unref (self->curve[channel]);
+ self->curve[channel] = NULL;
+ }
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_curves_config_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GimpCurvesConfig *self = GIMP_CURVES_CONFIG (object);
+
+ switch (property_id)
+ {
+ case PROP_LINEAR:
+ g_value_set_boolean (value, self->linear);
+ break;
+
+ case PROP_CHANNEL:
+ g_value_set_enum (value, self->channel);
+ break;
+
+ case PROP_CURVE:
+ g_value_set_object (value, self->curve[self->channel]);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_curves_config_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GimpCurvesConfig *self = GIMP_CURVES_CONFIG (object);
+
+ switch (property_id)
+ {
+ case PROP_LINEAR:
+ self->linear = g_value_get_boolean (value);
+ break;
+
+ case PROP_CHANNEL:
+ self->channel = g_value_get_enum (value);
+ g_object_notify (object, "curve");
+ break;
+
+ case PROP_CURVE:
+ {
+ GimpCurve *src_curve = g_value_get_object (value);
+ GimpCurve *dest_curve = self->curve[self->channel];
+
+ if (src_curve && dest_curve)
+ {
+ gimp_config_copy (GIMP_CONFIG (src_curve),
+ GIMP_CONFIG (dest_curve), 0);
+ }
+ }
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static gboolean
+gimp_curves_config_serialize (GimpConfig *config,
+ GimpConfigWriter *writer,
+ gpointer data)
+{
+ GimpCurvesConfig *c_config = GIMP_CURVES_CONFIG (config);
+ GimpHistogramChannel channel;
+ GimpHistogramChannel old_channel;
+ gboolean success = TRUE;
+
+ if (! gimp_operation_settings_config_serialize_base (config, writer, data) ||
+ ! gimp_config_serialize_property_by_name (config, "linear", writer))
+ return FALSE;
+
+ old_channel = c_config->channel;
+
+ for (channel = GIMP_HISTOGRAM_VALUE;
+ channel <= GIMP_HISTOGRAM_ALPHA;
+ channel++)
+ {
+ c_config->channel = channel;
+
+ /* serialize the channel properties manually (not using
+ * gimp_config_serialize_properties()), so the parent class'
+ * properties don't end up in the config file one per channel.
+ * See bug #700653.
+ */
+ success =
+ (gimp_config_serialize_property_by_name (config, "channel", writer) &&
+ gimp_config_serialize_property_by_name (config, "curve", writer));
+
+ if (! success)
+ break;
+ }
+
+ c_config->channel = old_channel;
+
+ return success;
+}
+
+static gboolean
+gimp_curves_config_deserialize (GimpConfig *config,
+ GScanner *scanner,
+ gint nest_level,
+ gpointer data)
+{
+ GimpCurvesConfig *c_config = GIMP_CURVES_CONFIG (config);
+ GimpHistogramChannel old_channel;
+ gboolean success = TRUE;
+
+ old_channel = c_config->channel;
+
+ success = gimp_config_deserialize_properties (config, scanner, nest_level);
+
+ g_object_set (config, "channel", old_channel, NULL);
+
+ return success;
+}
+
+static gboolean
+gimp_curves_config_equal (GimpConfig *a,
+ GimpConfig *b)
+{
+ GimpCurvesConfig *config_a = GIMP_CURVES_CONFIG (a);
+ GimpCurvesConfig *config_b = GIMP_CURVES_CONFIG (b);
+ GimpHistogramChannel channel;
+
+ if (! gimp_operation_settings_config_equal_base (a, b) ||
+ config_a->linear != config_b->linear)
+ return FALSE;
+
+ for (channel = GIMP_HISTOGRAM_VALUE;
+ channel <= GIMP_HISTOGRAM_ALPHA;
+ channel++)
+ {
+ GimpCurve *curve_a = config_a->curve[channel];
+ GimpCurve *curve_b = config_b->curve[channel];
+
+ if (curve_a && curve_b)
+ {
+ if (! gimp_config_is_equal_to (GIMP_CONFIG (curve_a),
+ GIMP_CONFIG (curve_b)))
+ return FALSE;
+ }
+ else if (curve_a || curve_b)
+ {
+ return FALSE;
+ }
+ }
+
+ /* don't compare "channel" */
+
+ return TRUE;
+}
+
+static void
+gimp_curves_config_reset (GimpConfig *config)
+{
+ GimpCurvesConfig *c_config = GIMP_CURVES_CONFIG (config);
+ GimpHistogramChannel channel;
+
+ gimp_operation_settings_config_reset_base (config);
+
+ for (channel = GIMP_HISTOGRAM_VALUE;
+ channel <= GIMP_HISTOGRAM_ALPHA;
+ channel++)
+ {
+ c_config->channel = channel;
+ gimp_curves_config_reset_channel (c_config);
+ }
+
+ gimp_config_reset_property (G_OBJECT (config), "linear");
+ gimp_config_reset_property (G_OBJECT (config), "channel");
+}
+
+static gboolean
+gimp_curves_config_copy (GimpConfig *src,
+ GimpConfig *dest,
+ GParamFlags flags)
+{
+ GimpCurvesConfig *src_config = GIMP_CURVES_CONFIG (src);
+ GimpCurvesConfig *dest_config = GIMP_CURVES_CONFIG (dest);
+ GimpHistogramChannel channel;
+
+ if (! gimp_operation_settings_config_copy_base (src, dest, flags))
+ return FALSE;
+
+ for (channel = GIMP_HISTOGRAM_VALUE;
+ channel <= GIMP_HISTOGRAM_ALPHA;
+ channel++)
+ {
+ gimp_config_copy (GIMP_CONFIG (src_config->curve[channel]),
+ GIMP_CONFIG (dest_config->curve[channel]),
+ flags);
+ }
+
+ dest_config->linear = src_config->linear;
+ dest_config->channel = src_config->channel;
+
+ g_object_notify (G_OBJECT (dest), "linear");
+ g_object_notify (G_OBJECT (dest), "channel");
+
+ return TRUE;
+}
+
+static void
+gimp_curves_config_curve_dirty (GimpCurve *curve,
+ GimpCurvesConfig *config)
+{
+ g_object_notify (G_OBJECT (config), "curve");
+}
+
+
+/* public functions */
+
+GObject *
+gimp_curves_config_new_spline (gint32 channel,
+ const gdouble *points,
+ gint n_points)
+{
+ GimpCurvesConfig *config;
+ GimpCurve *curve;
+ gint i;
+
+ g_return_val_if_fail (channel >= GIMP_HISTOGRAM_VALUE &&
+ channel <= GIMP_HISTOGRAM_ALPHA, NULL);
+ g_return_val_if_fail (points != NULL, NULL);
+ g_return_val_if_fail (n_points >= 2 && n_points <= 1024, NULL);
+
+ config = g_object_new (GIMP_TYPE_CURVES_CONFIG, NULL);
+
+ curve = config->curve[channel];
+
+ gimp_data_freeze (GIMP_DATA (curve));
+
+ gimp_curve_set_curve_type (curve, GIMP_CURVE_SMOOTH);
+ gimp_curve_clear_points (curve);
+
+ for (i = 0; i < n_points; i++)
+ gimp_curve_add_point (curve,
+ (gdouble) points[i * 2],
+ (gdouble) points[i * 2 + 1]);
+
+ gimp_data_thaw (GIMP_DATA (curve));
+
+ return G_OBJECT (config);
+}
+
+GObject *
+gimp_curves_config_new_explicit (gint32 channel,
+ const gdouble *samples,
+ gint n_samples)
+{
+ GimpCurvesConfig *config;
+ GimpCurve *curve;
+ gint i;
+
+ g_return_val_if_fail (channel >= GIMP_HISTOGRAM_VALUE &&
+ channel <= GIMP_HISTOGRAM_ALPHA, NULL);
+ g_return_val_if_fail (samples != NULL, NULL);
+ g_return_val_if_fail (n_samples >= 2 && n_samples <= 4096, NULL);
+
+ config = g_object_new (GIMP_TYPE_CURVES_CONFIG, NULL);
+
+ curve = config->curve[channel];
+
+ gimp_data_freeze (GIMP_DATA (curve));
+
+ gimp_curve_set_curve_type (curve, GIMP_CURVE_FREE);
+ gimp_curve_set_n_samples (curve, n_samples);
+
+ for (i = 0; i < n_samples; i++)
+ gimp_curve_set_curve (curve,
+ (gdouble) i / (gdouble) (n_samples - 1),
+ (gdouble) samples[i]);
+
+ gimp_data_thaw (GIMP_DATA (curve));
+
+ return G_OBJECT (config);
+}
+
+GObject *
+gimp_curves_config_new_spline_cruft (gint32 channel,
+ const guint8 *points,
+ gint n_points)
+{
+ GObject *config;
+ gdouble *d_points;
+ gint i;
+
+ g_return_val_if_fail (channel >= GIMP_HISTOGRAM_VALUE &&
+ channel <= GIMP_HISTOGRAM_ALPHA, NULL);
+ g_return_val_if_fail (points != NULL, NULL);
+ g_return_val_if_fail (n_points >= 2 && n_points <= 1024, NULL);
+
+ d_points = g_new (gdouble, 2 * n_points);
+
+ for (i = 0; i < n_points; i++)
+ {
+ d_points[i * 2] = (gdouble) points[i * 2] / 255.0;
+ d_points[i * 2 + 1] = (gdouble) points[i * 2 + 1] / 255.0;
+ }
+
+ config = gimp_curves_config_new_spline (channel, d_points, n_points);
+
+ g_free (d_points);
+
+ return config;
+}
+
+GObject *
+gimp_curves_config_new_explicit_cruft (gint32 channel,
+ const guint8 *samples,
+ gint n_samples)
+{
+ GObject *config;
+ gdouble *d_samples;
+ gint i;
+
+ g_return_val_if_fail (channel >= GIMP_HISTOGRAM_VALUE &&
+ channel <= GIMP_HISTOGRAM_ALPHA, NULL);
+ g_return_val_if_fail (samples != NULL, NULL);
+ g_return_val_if_fail (n_samples >= 2 && n_samples <= 4096, NULL);
+
+ d_samples = g_new (gdouble, n_samples);
+
+ for (i = 0; i < n_samples; i++)
+ {
+ d_samples[i] = (gdouble) samples[i] / 255.0;
+ }
+
+ config = gimp_curves_config_new_explicit (channel, d_samples, n_samples);
+
+ g_free (d_samples);
+
+ return config;
+}
+
+void
+gimp_curves_config_reset_channel (GimpCurvesConfig *config)
+{
+ g_return_if_fail (GIMP_IS_CURVES_CONFIG (config));
+
+ gimp_config_reset (GIMP_CONFIG (config->curve[config->channel]));
+}
+
+#define GIMP_CURVE_N_CRUFT_POINTS 17
+
+gboolean
+gimp_curves_config_load_cruft (GimpCurvesConfig *config,
+ GInputStream *input,
+ GError **error)
+{
+ GDataInputStream *data_input;
+ gint index[5][GIMP_CURVE_N_CRUFT_POINTS];
+ gint value[5][GIMP_CURVE_N_CRUFT_POINTS];
+ gchar *line;
+ gsize line_len;
+ gint i, j;
+
+ g_return_val_if_fail (GIMP_IS_CURVES_CONFIG (config), FALSE);
+ g_return_val_if_fail (G_IS_INPUT_STREAM (input), FALSE);
+ g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+
+ data_input = g_data_input_stream_new (input);
+
+ line_len = 64;
+ line = gimp_data_input_stream_read_line_always (data_input, &line_len,
+ NULL, error);
+ if (! line)
+ return FALSE;
+
+ if (strcmp (line, "# GIMP Curves File") != 0)
+ {
+ g_set_error_literal (error, GIMP_CONFIG_ERROR, GIMP_CONFIG_ERROR_PARSE,
+ _("not a GIMP Curves file"));
+ g_object_unref (data_input);
+ g_free (line);
+ return FALSE;
+ }
+
+ for (i = 0; i < 5; i++)
+ {
+ for (j = 0; j < GIMP_CURVE_N_CRUFT_POINTS; j++)
+ {
+ gchar *x_str = NULL;
+ gchar *y_str = NULL;
+
+ if (! (x_str = g_data_input_stream_read_upto (data_input, " ", -1,
+ NULL, NULL, error)) ||
+ ! g_data_input_stream_read_byte (data_input, NULL, error) ||
+ ! (y_str = g_data_input_stream_read_upto (data_input, " ", -1,
+ NULL, NULL, error)) ||
+ ! g_data_input_stream_read_byte (data_input, NULL, error))
+ {
+ g_free (x_str);
+ g_free (y_str);
+ g_object_unref (data_input);
+ return FALSE;
+ }
+
+ if (sscanf (x_str, "%d", &index[i][j]) != 1 ||
+ sscanf (y_str, "%d", &value[i][j]) != 1)
+ {
+ g_set_error_literal (error,
+ GIMP_CONFIG_ERROR, GIMP_CONFIG_ERROR_PARSE,
+ _("Parse error, didn't find 2 integers"));
+ g_free (x_str);
+ g_free (y_str);
+ g_object_unref (data_input);
+ return FALSE;
+ }
+
+ g_free (x_str);
+ g_free (y_str);
+ }
+ }
+
+ g_object_unref (data_input);
+
+ g_object_freeze_notify (G_OBJECT (config));
+
+ for (i = 0; i < 5; i++)
+ {
+ GimpCurve *curve = config->curve[i];
+
+ gimp_data_freeze (GIMP_DATA (curve));
+
+ gimp_curve_set_curve_type (curve, GIMP_CURVE_SMOOTH);
+ gimp_curve_clear_points (curve);
+
+ for (j = 0; j < GIMP_CURVE_N_CRUFT_POINTS; j++)
+ {
+ gdouble x;
+ gdouble y;
+
+ x = (gdouble) index[i][j] / 255.0;
+ y = (gdouble) value[i][j] / 255.0;
+
+ if (x >= 0.0)
+ gimp_curve_add_point (curve, x, y);
+ }
+
+ gimp_data_thaw (GIMP_DATA (curve));
+ }
+
+ config->linear = FALSE;
+
+ g_object_notify (G_OBJECT (config), "linear");
+
+ g_object_thaw_notify (G_OBJECT (config));
+
+ return TRUE;
+}
+
+gboolean
+gimp_curves_config_save_cruft (GimpCurvesConfig *config,
+ GOutputStream *output,
+ GError **error)
+{
+ GString *string;
+ gint i;
+
+ g_return_val_if_fail (GIMP_IS_CURVES_CONFIG (config), FALSE);
+ g_return_val_if_fail (G_IS_OUTPUT_STREAM (output), FALSE);
+ g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+
+ string = g_string_new ("# GIMP Curves File\n");
+
+ for (i = 0; i < 5; i++)
+ {
+ GimpCurve *curve = config->curve[i];
+ gint j;
+
+ if (curve->curve_type == GIMP_CURVE_SMOOTH)
+ {
+ g_object_ref (curve);
+ }
+ else
+ {
+ curve = GIMP_CURVE (gimp_data_duplicate (GIMP_DATA (curve)));
+
+ gimp_curve_set_curve_type (curve, GIMP_CURVE_SMOOTH);
+ }
+
+ for (j = 0; j < GIMP_CURVE_N_CRUFT_POINTS; j++)
+ {
+ gint x = -1;
+ gint y = -1;
+
+ if (j < gimp_curve_get_n_points (curve))
+ {
+ gdouble point_x;
+ gdouble point_y;
+
+ gimp_curve_get_point (curve, j, &point_x, &point_y);
+
+ x = floor (point_x * 255.999);
+ y = floor (point_y * 255.999);
+ }
+
+ g_string_append_printf (string, "%d %d ", x, y);
+ }
+
+ g_string_append_printf (string, "\n");
+
+ g_object_unref (curve);
+ }
+
+ if (! g_output_stream_write_all (output, string->str, string->len,
+ NULL, NULL, error))
+ {
+ g_prefix_error (error, _("Writing curves file failed: "));
+ g_string_free (string, TRUE);
+ return FALSE;
+ }
+
+ g_string_free (string, TRUE);
+
+ return TRUE;
+}
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