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Files
gimp/app/actions/gradient-editor-commands.c
Jehan b6856af9d8 app: GimpGradient now uses GeglColor.
I still see some limitations in GimpGradient, and in particular, they are still
always stored as RGB in GGR files. It would be nice if we could store the actual
color format. This way, if someone chooses a gradient stop as Lab or CMYK color,
that's what the gradient file would keep track of. But also even storing the
space of a color (instead of storing/loading always in sRGB, even though this
may still work fine as we store unbounded double values). This might warrant for
a v2 of GGR file format.

This commit also fixes loading of SVG gradient which was apparently broken
regarding hexadecimal color parsing.

Finally I improve gegl_color_set_alpha() by adding an alpha channel when the
initial format had none.
2024-02-11 23:28:03 +01:00

740 lines
25 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 <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "actions-types.h"
#include "core/gimp.h"
#include "core/gimpcontext.h"
#include "core/gimpgradient.h"
#include "widgets/gimpgradienteditor.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimpuimanager.h"
#include "widgets/gimpviewabledialog.h"
#include "gradient-editor-commands.h"
#include "gimp-intl.h"
/* local function prototypes */
static void gradient_editor_split_uniform_response (GtkWidget *widget,
gint response_id,
GimpGradientEditor *editor);
static void gradient_editor_replicate_response (GtkWidget *widget,
gint response_id,
GimpGradientEditor *editor);
/* public functions */
void
gradient_editor_left_color_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
gimp_gradient_editor_edit_left_color (editor);
}
void
gradient_editor_left_color_type_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *left;
GimpGradientColor color_type;
color_type = (GimpGradientColor) g_variant_get_int32 (value);
gimp_gradient_editor_get_selection (editor, &gradient, &left, NULL);
if (gradient &&
color_type >= 0 &&
color_type !=
gimp_gradient_segment_get_left_color_type (gradient, left))
{
gimp_data_freeze (GIMP_DATA (gradient));
gimp_gradient_segment_set_left_color_type (gradient, left, color_type);
if (color_type == GIMP_GRADIENT_COLOR_FIXED)
{
GeglColor *color;
color = gimp_gradient_segment_get_left_flat_color (gradient,
GIMP_DATA_EDITOR (editor)->context,
left);
gimp_gradient_segment_set_left_color (gradient, left, color);
g_object_unref (color);
}
gimp_data_thaw (GIMP_DATA (gradient));
}
}
void
gradient_editor_load_left_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpDataEditor *data_editor = GIMP_DATA_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *left;
GimpGradientSegment *right;
GimpGradientSegment *seg;
GeglColor *color;
GimpGradientColor color_type = GIMP_GRADIENT_COLOR_FIXED;
gint index = g_variant_get_int32 (value);
gimp_gradient_editor_get_selection (editor, &gradient, &left, &right);
switch (index)
{
case GRADIENT_EDITOR_COLOR_NEIGHBOR_ENDPOINT:
if (left->prev != NULL)
seg = left->prev;
else
seg = gimp_gradient_segment_get_last (left);
color = seg->right_color;
color_type = seg->right_color_type;
break;
case GRADIENT_EDITOR_COLOR_OTHER_ENDPOINT:
color = right->right_color;
color_type = right->right_color_type;
break;
case GRADIENT_EDITOR_COLOR_FOREGROUND:
color = gimp_context_get_foreground (data_editor->context);
break;
case GRADIENT_EDITOR_COLOR_BACKGROUND:
color = gimp_context_get_background (data_editor->context);
break;
default: /* Load a color */
color = editor->saved_colors[index - GRADIENT_EDITOR_COLOR_FIRST_CUSTOM];
break;
}
gimp_data_freeze (GIMP_DATA (gradient));
gimp_gradient_segment_range_blend (gradient, left, right, color,
right->right_color, TRUE, TRUE);
gimp_gradient_segment_set_left_color_type (gradient, left, color_type);
gimp_data_thaw (GIMP_DATA (gradient));
}
void
gradient_editor_save_left_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *left;
gint index = g_variant_get_int32 (value);
gimp_gradient_editor_get_selection (editor, &gradient, &left, NULL);
g_clear_object (&editor->saved_colors[index]);
editor->saved_colors[index] = gegl_color_duplicate (gimp_gradient_segment_get_left_color (gradient, left));
}
void
gradient_editor_right_color_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
gimp_gradient_editor_edit_right_color (editor);
}
void
gradient_editor_right_color_type_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *right;
GimpGradientColor color_type;
color_type = (GimpGradientColor) g_variant_get_int32 (value);
gimp_gradient_editor_get_selection (editor, &gradient, NULL, &right);
if (gradient &&
color_type >= 0 &&
color_type !=
gimp_gradient_segment_get_right_color_type (gradient, right))
{
gimp_data_freeze (GIMP_DATA (gradient));
gimp_gradient_segment_set_right_color_type (gradient, right, color_type);
if (color_type == GIMP_GRADIENT_COLOR_FIXED)
{
GeglColor *color;
color = gimp_gradient_segment_get_right_flat_color (gradient, GIMP_DATA_EDITOR (editor)->context,
right);
gimp_gradient_segment_set_right_color (gradient, right, color);
g_object_unref (color);
}
gimp_data_thaw (GIMP_DATA (gradient));
}
}
void
gradient_editor_load_right_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpDataEditor *data_editor = GIMP_DATA_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *left;
GimpGradientSegment *right;
GimpGradientSegment *seg;
GeglColor *color;
GimpGradientColor color_type = GIMP_GRADIENT_COLOR_FIXED;
gint index = g_variant_get_int32 (value);
gimp_gradient_editor_get_selection (editor, &gradient, &left, &right);
switch (index)
{
case GRADIENT_EDITOR_COLOR_NEIGHBOR_ENDPOINT:
if (right->next != NULL)
seg = right->next;
else
seg = gimp_gradient_segment_get_first (right);
color = seg->left_color;
color_type = seg->left_color_type;
break;
case GRADIENT_EDITOR_COLOR_OTHER_ENDPOINT:
color = left->left_color;
color_type = left->left_color_type;
break;
case GRADIENT_EDITOR_COLOR_FOREGROUND:
color = gimp_context_get_foreground (data_editor->context);
break;
case GRADIENT_EDITOR_COLOR_BACKGROUND:
color = gimp_context_get_background (data_editor->context);
break;
default: /* Load a color */
color = editor->saved_colors[index - GRADIENT_EDITOR_COLOR_FIRST_CUSTOM];
break;
}
gimp_data_freeze (GIMP_DATA (gradient));
gimp_gradient_segment_range_blend (gradient, left, right, left->left_color,
color, TRUE, TRUE);
gimp_gradient_segment_set_right_color_type (gradient, left, color_type);
gimp_data_thaw (GIMP_DATA (gradient));
}
void
gradient_editor_save_right_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *right;
gint index = g_variant_get_int32 (value);
gimp_gradient_editor_get_selection (editor, &gradient, NULL, &right);
g_clear_object (&editor->saved_colors[index]);
editor->saved_colors[index] = gegl_color_duplicate (gimp_gradient_segment_get_right_color (gradient, right));
}
void
gradient_editor_blending_func_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *left;
GimpGradientSegment *right;
GEnumClass *enum_class = NULL;
GimpGradientSegmentType type;
type = (GimpGradientSegmentType) g_variant_get_int32 (value);
gimp_gradient_editor_get_selection (editor, &gradient, &left, &right);
enum_class = g_type_class_ref (GIMP_TYPE_GRADIENT_SEGMENT_TYPE);
if (gradient && g_enum_get_value (enum_class, type))
{
gimp_gradient_segment_range_set_blending_function (gradient,
left, right,
type);
}
g_type_class_unref (enum_class);
}
void
gradient_editor_coloring_type_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *left;
GimpGradientSegment *right;
GEnumClass *enum_class = NULL;
GimpGradientSegmentColor color;
color = (GimpGradientSegmentColor) g_variant_get_int32 (value);
gimp_gradient_editor_get_selection (editor, &gradient, &left, &right);
enum_class = g_type_class_ref (GIMP_TYPE_GRADIENT_SEGMENT_COLOR);
if (gradient && g_enum_get_value (enum_class, color))
{
gimp_gradient_segment_range_set_coloring_type (gradient,
left, right,
color);
}
g_type_class_unref (enum_class);
}
void
gradient_editor_flip_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *left;
GimpGradientSegment *right;
gimp_gradient_editor_get_selection (editor, &gradient, &left, &right);
gimp_gradient_segment_range_flip (gradient,
left, right,
&left, &right);
gimp_gradient_editor_set_selection (editor, left, right);
}
void
gradient_editor_replicate_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpDataEditor *data_editor = GIMP_DATA_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *left;
GimpGradientSegment *right;
GtkWidget *dialog;
GtkWidget *vbox;
GtkWidget *label;
GtkWidget *scale;
GtkAdjustment *scale_data;
const gchar *title;
const gchar *desc;
gimp_gradient_editor_get_selection (editor, &gradient, &left, &right);
if (left == right)
{
title = _("Replicate Segment");
desc = _("Replicate Gradient Segment");
}
else
{
title = _("Replicate Selection");
desc = _("Replicate Gradient Selection");
}
dialog = gimp_viewable_dialog_new (g_list_prepend (NULL, gradient),
data_editor->context,
title,
"gimp-gradient-segment-replicate",
GIMP_ICON_GRADIENT, desc,
GTK_WIDGET (editor),
gimp_standard_help_func,
GIMP_HELP_GRADIENT_EDITOR_REPLICATE,
_("_Cancel"), GTK_RESPONSE_CANCEL,
_("_Replicate"), GTK_RESPONSE_OK,
NULL);
gimp_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
g_signal_connect (dialog, "response",
G_CALLBACK (gradient_editor_replicate_response),
editor);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
/* Instructions */
if (left == right)
label = gtk_label_new (_("Select the number of times\n"
"to replicate the selected segment."));
else
label = gtk_label_new (_("Select the number of times\n"
"to replicate the selection."));
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
/* Scale */
scale_data = gtk_adjustment_new (2.0, 2.0, 21.0, 1.0, 1.0, 1.0);
scale = gtk_scale_new (GTK_ORIENTATION_HORIZONTAL, scale_data);
gtk_scale_set_digits (GTK_SCALE (scale), 0);
gtk_scale_set_value_pos (GTK_SCALE (scale), GTK_POS_TOP);
gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, TRUE, 4);
gtk_widget_show (scale);
g_object_set_data (G_OBJECT (dialog), "adjustment", scale_data);
gtk_widget_set_sensitive (GTK_WIDGET (editor), FALSE);
gimp_ui_manager_update (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)),
gimp_editor_get_popup_data (GIMP_EDITOR (editor)));
gtk_widget_show (dialog);
}
void
gradient_editor_split_midpoint_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpDataEditor *data_editor = GIMP_DATA_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *left;
GimpGradientSegment *right;
gimp_gradient_editor_get_selection (editor, &gradient, &left, &right);
gimp_gradient_segment_range_split_midpoint (gradient,
data_editor->context,
left, right,
editor->blend_color_space,
&left, &right);
gimp_gradient_editor_set_selection (editor, left, right);
}
void
gradient_editor_split_uniformly_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpDataEditor *data_editor = GIMP_DATA_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *left;
GimpGradientSegment *right;
GtkWidget *dialog;
GtkWidget *vbox;
GtkWidget *label;
GtkWidget *scale;
GtkAdjustment *scale_data;
const gchar *title;
const gchar *desc;
gimp_gradient_editor_get_selection (editor, &gradient, &left, &right);
if (left == right)
{
title = _("Split Segment Uniformly");
desc = _("Split Gradient Segment Uniformly");
}
else
{
title = _("Split Segments Uniformly");
desc = _("Split Gradient Segments Uniformly");
}
dialog = gimp_viewable_dialog_new (g_list_prepend (NULL, gradient),
data_editor->context,
title,
"gimp-gradient-segment-split-uniformly",
GIMP_ICON_GRADIENT, desc,
GTK_WIDGET (editor),
gimp_standard_help_func,
GIMP_HELP_GRADIENT_EDITOR_SPLIT_UNIFORM,
_("_Cancel"), GTK_RESPONSE_CANCEL,
_("_Split"), GTK_RESPONSE_OK,
NULL);
gimp_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
g_signal_connect (dialog, "response",
G_CALLBACK (gradient_editor_split_uniform_response),
editor);
/* The main vbox */
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
/* Instructions */
if (left == right)
label = gtk_label_new (_("Select the number of uniform parts\n"
"in which to split the selected segment."));
else
label = gtk_label_new (_("Select the number of uniform parts\n"
"in which to split the segments in the selection."));
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
/* Scale */
scale_data = gtk_adjustment_new (2.0, 2.0, 21.0, 1.0, 1.0, 1.0);
scale = gtk_scale_new (GTK_ORIENTATION_HORIZONTAL, scale_data);
gtk_scale_set_digits (GTK_SCALE (scale), 0);
gtk_scale_set_value_pos (GTK_SCALE (scale), GTK_POS_TOP);
gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 4);
gtk_widget_show (scale);
g_object_set_data (G_OBJECT (dialog), "adjustment", scale_data);
gtk_widget_set_sensitive (GTK_WIDGET (editor), FALSE);
gimp_ui_manager_update (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)),
gimp_editor_get_popup_data (GIMP_EDITOR (editor)));
gtk_widget_show (dialog);
}
void
gradient_editor_delete_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *left;
GimpGradientSegment *right;
gimp_gradient_editor_get_selection (editor, &gradient, &left, &right);
gimp_gradient_segment_range_delete (gradient,
left, right,
&left, &right);
gimp_gradient_editor_set_selection (editor, left, right);
}
void
gradient_editor_recenter_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *left;
GimpGradientSegment *right;
gimp_gradient_editor_get_selection (editor, &gradient, &left, &right);
gimp_gradient_segment_range_recenter_handles (gradient, left, right);
}
void
gradient_editor_redistribute_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *left;
GimpGradientSegment *right;
gimp_gradient_editor_get_selection (editor, &gradient, &left, &right);
gimp_gradient_segment_range_redistribute_handles (gradient, left, right);
}
void
gradient_editor_blend_color_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *left;
GimpGradientSegment *right;
gimp_gradient_editor_get_selection (editor, &gradient, &left, &right);
gimp_gradient_segment_range_blend (gradient, left, right,
left->left_color,
right->right_color,
TRUE, FALSE);
}
void
gradient_editor_blend_opacity_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpGradient *gradient;
GimpGradientSegment *left;
GimpGradientSegment *right;
gimp_gradient_editor_get_selection (editor, &gradient, &left, &right);
gimp_gradient_segment_range_blend (gradient, left, right,
left->left_color,
right->right_color,
FALSE, TRUE);
}
void
gradient_editor_zoom_cmd_callback (GimpAction *action,
GVariant *value,
gpointer data)
{
GimpGradientEditor *editor = GIMP_GRADIENT_EDITOR (data);
GimpZoomType zoom_type = (GimpZoomType) g_variant_get_int32 (value);
gimp_gradient_editor_zoom (editor, zoom_type, 1.0, 0.5);
}
/* private functions */
static void
gradient_editor_split_uniform_response (GtkWidget *widget,
gint response_id,
GimpGradientEditor *editor)
{
GtkAdjustment *adjustment;
gint split_parts;
adjustment = g_object_get_data (G_OBJECT (widget), "adjustment");
split_parts = RINT (gtk_adjustment_get_value (adjustment));
gtk_widget_destroy (widget);
gtk_widget_set_sensitive (GTK_WIDGET (editor), TRUE);
gimp_ui_manager_update (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)),
gimp_editor_get_popup_data (GIMP_EDITOR (editor)));
if (response_id == GTK_RESPONSE_OK)
{
GimpDataEditor *data_editor = GIMP_DATA_EDITOR (editor);
GimpGradient *gradient;
GimpGradientSegment *left;
GimpGradientSegment *right;
gimp_gradient_editor_get_selection (editor, &gradient, &left, &right);
gimp_gradient_segment_range_split_uniform (gradient,
data_editor->context,
left, right,
split_parts,
editor->blend_color_space,
&left, &right);
gimp_gradient_editor_set_selection (editor, left, right);
}
}
static void
gradient_editor_replicate_response (GtkWidget *widget,
gint response_id,
GimpGradientEditor *editor)
{
GtkAdjustment *adjustment;
gint replicate_times;
adjustment = g_object_get_data (G_OBJECT (widget), "adjustment");
replicate_times = RINT (gtk_adjustment_get_value (adjustment));
gtk_widget_destroy (widget);
gtk_widget_set_sensitive (GTK_WIDGET (editor), TRUE);
gimp_ui_manager_update (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)),
gimp_editor_get_popup_data (GIMP_EDITOR (editor)));
if (response_id == GTK_RESPONSE_OK)
{
GimpGradient *gradient;
GimpGradientSegment *left;
GimpGradientSegment *right;
gimp_gradient_editor_get_selection (editor, &gradient, &left, &right);
gimp_gradient_segment_range_replicate (gradient,
left, right,
replicate_times,
&left, &right);
gimp_gradient_editor_set_selection (editor, left, right);
}
}