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gimp/app/gui/gradient-editor-commands.c

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/* The GIMP -- an 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "gui-types.h"
#include "core/gimp.h"
#include "core/gimpcontext.h"
#include "core/gimpdatafactory.h"
#include "core/gimpgradient.h"
#include "widgets/gimpgradienteditor.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimpviewabledialog.h"
#include "color-notebook.h"
#include "dialogs.h"
#include "gradient-editor-commands.h"
#include "gimp-intl.h"
/* local function prototypes */
static void gradient_editor_left_color_changed (ColorNotebook *cnb,
const GimpRGB *color,
ColorNotebookState state,
gpointer data);
static void gradient_editor_right_color_changed (ColorNotebook *cnb,
const GimpRGB *color,
ColorNotebookState state,
gpointer data);
static GimpGradientSegment *
gradient_editor_save_selection (GimpGradientEditor *editor);
static void gradient_editor_replace_selection (GimpGradientEditor *editor,
GimpGradientSegment *replace_seg);
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 functionss */
void
gradient_editor_left_color_cmd_callback (GtkWidget *widget,
gpointer data,
guint action)
{
GimpGradientEditor *editor;
GimpGradient *gradient;
editor = GIMP_GRADIENT_EDITOR (data);
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
editor->left_saved_dirty = GIMP_DATA (gradient)->dirty;
editor->left_saved_segments = gradient_editor_save_selection (editor);
editor->color_notebook =
color_notebook_new (GIMP_VIEWABLE (gradient),
_("Left Endpoint Color"),
GIMP_STOCK_GRADIENT,
_("Gradient Segment's Left Endpoint Color"),
GTK_WIDGET (editor),
global_dialog_factory,
"gimp-gradient-editor-color-dialog",
&editor->control_sel_l->left_color,
gradient_editor_left_color_changed, editor,
editor->instant_update, TRUE);
gtk_widget_set_sensitive (GTK_WIDGET (editor), FALSE);
}
void
gradient_editor_load_left_cmd_callback (GtkWidget *widget,
gpointer data,
guint action)
{
GimpGradientEditor *editor;
GimpGradient *gradient;
GimpContext *user_context;
GimpGradientSegment *seg;
GimpRGB color;
gint i;
editor = GIMP_GRADIENT_EDITOR (data);
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
user_context = gimp_get_user_context (GIMP_DATA_EDITOR (editor)->data_factory->gimp);
i = (gint) action;
switch (i)
{
case 0: /* Fetch from left neighbor's right endpoint */
if (editor->control_sel_l->prev != NULL)
seg = editor->control_sel_l->prev;
else
seg = gimp_gradient_segment_get_last (editor->control_sel_l);
gimp_gradient_segments_blend_endpoints (editor->control_sel_l,
editor->control_sel_r,
&seg->right_color,
&editor->control_sel_r->right_color,
TRUE, TRUE);
break;
case 1: /* Fetch from right endpoint */
gimp_gradient_segments_blend_endpoints (editor->control_sel_l,
editor->control_sel_r,
&editor->control_sel_r->right_color,
&editor->control_sel_r->right_color,
TRUE, TRUE);
break;
case 2: /* Fetch from FG color */
gimp_context_get_foreground (user_context, &color);
gimp_gradient_segments_blend_endpoints (editor->control_sel_l,
editor->control_sel_r,
&color,
&editor->control_sel_r->right_color,
TRUE, TRUE);
break;
case 3: /* Fetch from BG color */
gimp_context_get_background (user_context, &color);
gimp_gradient_segments_blend_endpoints (editor->control_sel_l,
editor->control_sel_r,
&color,
&editor->control_sel_r->right_color,
TRUE, TRUE);
break;
default: /* Load a color */
gimp_gradient_segments_blend_endpoints (editor->control_sel_l,
editor->control_sel_r,
&editor->saved_colors[i - 4],
&editor->control_sel_r->right_color,
TRUE, TRUE);
break;
}
gimp_data_dirty (GIMP_DATA (gradient));
}
void
gradient_editor_save_left_cmd_callback (GtkWidget *widget,
gpointer data,
guint action)
{
GimpGradientEditor *editor;
editor = GIMP_GRADIENT_EDITOR (data);
editor->saved_colors[action] = editor->control_sel_l->left_color;
}
void
gradient_editor_right_color_cmd_callback (GtkWidget *widget,
gpointer data,
guint action)
{
GimpGradientEditor *editor;
GimpGradient *gradient;
editor = GIMP_GRADIENT_EDITOR (data);
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
editor->right_saved_dirty = GIMP_DATA (gradient)->dirty;
editor->right_saved_segments = gradient_editor_save_selection (editor);
editor->color_notebook =
color_notebook_new (GIMP_VIEWABLE (gradient),
_("Right Endpoint Color"),
GIMP_STOCK_GRADIENT,
_("Gradient Segment's Right Endpoint Color"),
GTK_WIDGET (editor),
global_dialog_factory,
"gimp-gradient-editor-color-dialog",
&editor->control_sel_l->right_color,
gradient_editor_right_color_changed, editor,
editor->instant_update, TRUE);
gtk_widget_set_sensitive (GTK_WIDGET (editor), FALSE);
}
void
gradient_editor_load_right_cmd_callback (GtkWidget *widget,
gpointer data,
guint action)
{
GimpGradientEditor *editor;
GimpGradient *gradient;
GimpContext *user_context;
GimpGradientSegment *seg;
GimpRGB color;
gint i;
editor = GIMP_GRADIENT_EDITOR (data);
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
user_context = gimp_get_user_context (GIMP_DATA_EDITOR (editor)->data_factory->gimp);
i = (gint) action;
switch (i)
{
case 0: /* Fetch from right neighbor's left endpoint */
if (editor->control_sel_r->next != NULL)
seg = editor->control_sel_r->next;
else
seg = gimp_gradient_segment_get_first (editor->control_sel_r);
gimp_gradient_segments_blend_endpoints (editor->control_sel_l,
editor->control_sel_r,
&editor->control_sel_r->left_color,
&seg->left_color,
TRUE, TRUE);
break;
case 1: /* Fetch from left endpoint */
gimp_gradient_segments_blend_endpoints (editor->control_sel_l,
editor->control_sel_r,
&editor->control_sel_l->left_color,
&editor->control_sel_l->left_color,
TRUE, TRUE);
break;
case 2: /* Fetch from FG color */
gimp_context_get_foreground (user_context, &color);
gimp_gradient_segments_blend_endpoints (editor->control_sel_l,
editor->control_sel_r,
&editor->control_sel_l->left_color,
&color,
TRUE, TRUE);
break;
case 3: /* Fetch from BG color */
gimp_context_get_background (user_context, &color);
gimp_gradient_segments_blend_endpoints (editor->control_sel_l,
editor->control_sel_r,
&editor->control_sel_l->left_color,
&color,
TRUE, TRUE);
break;
default: /* Load a color */
gimp_gradient_segments_blend_endpoints (editor->control_sel_l,
editor->control_sel_r,
&editor->control_sel_l->left_color,
&editor->saved_colors[i - 4],
TRUE, TRUE);
break;
}
gimp_data_dirty (GIMP_DATA (gradient));
}
void
gradient_editor_save_right_cmd_callback (GtkWidget *widget,
gpointer data,
guint action)
{
GimpGradientEditor *editor;
editor = GIMP_GRADIENT_EDITOR (data);
editor->saved_colors[action] = editor->control_sel_l->left_color;
}
void
gradient_editor_blending_func_cmd_callback (GtkWidget *widget,
gpointer data,
guint action)
{
GimpGradientEditor *editor;
GimpGradient *gradient;
GimpGradientSegmentType type;
GimpGradientSegment *seg, *aseg;
if (! GTK_CHECK_MENU_ITEM (widget)->active)
return;
editor = GIMP_GRADIENT_EDITOR (data);
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
type = (GimpGradientSegmentType) action;
seg = editor->control_sel_l;
do
{
seg->type = type;
aseg = seg;
seg = seg->next;
}
while (aseg != editor->control_sel_r);
gimp_data_dirty (GIMP_DATA (gradient));
}
void
gradient_editor_coloring_type_cmd_callback (GtkWidget *widget,
gpointer data,
guint action)
{
GimpGradientEditor *editor;
GimpGradient *gradient;
GimpGradientSegmentColor color;
GimpGradientSegment *seg, *aseg;
if (! GTK_CHECK_MENU_ITEM (widget)->active)
return;
editor = GIMP_GRADIENT_EDITOR (data);
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
color = (GimpGradientSegmentColor) action;
seg = editor->control_sel_l;
do
{
seg->color = color;
aseg = seg;
seg = seg->next;
}
while (aseg != editor->control_sel_r);
gimp_data_dirty (GIMP_DATA (gradient));
}
void
gradient_editor_flip_cmd_callback (GtkWidget *widget,
gpointer data,
guint action)
{
GimpGradientEditor *editor;
GimpGradient *gradient;
GimpGradientSegment *oseg, *oaseg;
GimpGradientSegment *seg, *prev, *tmp;
GimpGradientSegment *lseg, *rseg;
gdouble left, right;
editor = GIMP_GRADIENT_EDITOR (data);
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
left = editor->control_sel_l->left;
right = editor->control_sel_r->right;
/* Build flipped segments */
prev = NULL;
oseg = editor->control_sel_r;
tmp = NULL;
do
{
seg = gimp_gradient_segment_new ();
if (prev == NULL)
{
seg->left = left;
tmp = seg; /* Remember first segment */
}
else
seg->left = left + right - oseg->right;
seg->middle = left + right - oseg->middle;
seg->right = left + right - oseg->left;
seg->left_color = oseg->right_color;
seg->right_color = oseg->left_color;
switch (oseg->type)
{
case GIMP_GRAD_SPHERE_INCREASING:
seg->type = GIMP_GRAD_SPHERE_DECREASING;
break;
case GIMP_GRAD_SPHERE_DECREASING:
seg->type = GIMP_GRAD_SPHERE_INCREASING;
break;
default:
seg->type = oseg->type;
}
switch (oseg->color)
{
case GIMP_GRAD_HSV_CCW:
seg->color = GIMP_GRAD_HSV_CW;
break;
case GIMP_GRAD_HSV_CW:
seg->color = GIMP_GRAD_HSV_CCW;
break;
default:
seg->color = oseg->color;
}
seg->prev = prev;
seg->next = NULL;
if (prev)
prev->next = seg;
prev = seg;
oaseg = oseg;
oseg = oseg->prev; /* Move backwards! */
}
while (oaseg != editor->control_sel_l);
seg->right = right; /* Squish accumulative error */
/* Free old segments */
lseg = editor->control_sel_l->prev;
rseg = editor->control_sel_r->next;
oseg = editor->control_sel_l;
do
{
oaseg = oseg->next;
gimp_gradient_segment_free (oseg);
oseg = oaseg;
}
while (oaseg != rseg);
/* Link in new segments */
if (lseg)
lseg->next = tmp;
else
gradient->segments = tmp;
tmp->prev = lseg;
seg->next = rseg;
if (rseg)
rseg->prev = seg;
/* Reset selection */
editor->control_sel_l = tmp;
editor->control_sel_r = seg;
/* Done */
gimp_data_dirty (GIMP_DATA (gradient));
gimp_gradient_editor_update (editor);
}
void
gradient_editor_replicate_cmd_callback (GtkWidget *widget,
gpointer data,
guint action)
{
GimpGradientEditor *editor;
GtkWidget *dialog;
GtkWidget *vbox;
GtkWidget *label;
GtkWidget *scale;
GtkObject *scale_data;
const gchar *title;
const gchar *desc;
editor = GIMP_GRADIENT_EDITOR (data);
if (editor->control_sel_l == editor->control_sel_r)
{
title = _("Replicate Segment");
desc = _("Replicate Gradient Segment");
}
else
{
title = _("Replicate Selection");
desc = _("Replicate Gradient Selection");
}
dialog =
gimp_viewable_dialog_new (GIMP_VIEWABLE (GIMP_DATA_EDITOR (editor)->data),
title, "gimp-gradient-segment-replicate",
GIMP_STOCK_GRADIENT, desc,
GTK_WIDGET (editor),
gimp_standard_help_func,
GIMP_HELP_GRADIENT_EDITOR_REPLICATE,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
_("Replicate"), GTK_RESPONSE_OK,
NULL);
g_signal_connect (dialog, "response",
G_CALLBACK (gradient_editor_replicate_response),
editor);
vbox = gtk_vbox_new (FALSE, 4);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 6);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dialog)->vbox), vbox);
gtk_widget_show (vbox);
/* Instructions */
if (editor->control_sel_l == editor->control_sel_r)
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 */
editor->replicate_times = 2;
scale_data = gtk_adjustment_new (2.0, 2.0, 21.0, 1.0, 1.0, 1.0);
scale = gtk_hscale_new (GTK_ADJUSTMENT (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_signal_connect (scale_data, "value_changed",
G_CALLBACK (gimp_int_adjustment_update),
&editor->replicate_times);
gtk_widget_show (dialog);
gtk_widget_set_sensitive (GTK_WIDGET (editor), FALSE);
}
void
gradient_editor_split_midpoint_cmd_callback (GtkWidget *widget,
gpointer data,
guint action)
{
GimpGradientEditor *editor;
GimpGradient *gradient;
GimpGradientSegment *seg, *lseg, *rseg;
editor = GIMP_GRADIENT_EDITOR (data);
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
seg = editor->control_sel_l;
do
{
gimp_gradient_segment_split_midpoint (gradient, seg, &lseg, &rseg);
seg = rseg->next;
}
while (lseg != editor->control_sel_r);
editor->control_sel_r = rseg;
gimp_data_dirty (GIMP_DATA (gradient));
gimp_gradient_editor_update (editor);
}
void
gradient_editor_split_uniformly_cmd_callback (GtkWidget *widget,
gpointer data,
guint action)
{
GimpGradientEditor *editor;
GtkWidget *dialog;
GtkWidget *vbox;
GtkWidget *label;
GtkWidget *scale;
GtkObject *scale_data;
const gchar *title;
const gchar *desc;
editor = GIMP_GRADIENT_EDITOR (data);
if (editor->control_sel_l == editor->control_sel_r)
{
title = _("Split Segment Uniformly");
desc = _("Split Gradient Segment Uniformly");
}
else
{
title = _("Split Segments Uniformly");
desc = _("Split Gradient Segments Uniformly");
}
dialog =
gimp_viewable_dialog_new (GIMP_VIEWABLE (GIMP_DATA_EDITOR (editor)->data),
title, "gimp-gradient-segment-split-uniformly",
GIMP_STOCK_GRADIENT, desc,
GTK_WIDGET (editor),
gimp_standard_help_func,
GIMP_HELP_GRADIENT_EDITOR_SPLIT_UNIFORM,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
_("Split"), GTK_RESPONSE_OK,
NULL);
g_signal_connect (dialog, "response",
G_CALLBACK (gradient_editor_split_uniform_response),
editor);
/* The main vbox */
vbox = gtk_vbox_new (FALSE, 4);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 6);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dialog)->vbox), vbox);
gtk_widget_show (vbox);
/* Instructions */
if (editor->control_sel_l == editor->control_sel_r)
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 */
editor->split_parts = 2;
scale_data = gtk_adjustment_new (2.0, 2.0, 21.0, 1.0, 1.0, 1.0);
scale = gtk_hscale_new (GTK_ADJUSTMENT (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_signal_connect (scale_data, "value_changed",
G_CALLBACK (gimp_int_adjustment_update),
&editor->split_parts);
/* Show! */
gtk_widget_show (dialog);
gtk_widget_set_sensitive (GTK_WIDGET (editor), FALSE);
}
void
gradient_editor_delete_cmd_callback (GtkWidget *widget,
gpointer data,
guint action)
{
GimpGradientEditor *editor;
GimpGradient *gradient;
GimpGradientSegment *lseg, *rseg, *seg, *aseg, *next;
gdouble join;
editor = GIMP_GRADIENT_EDITOR (data);
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
/* Remember segments to the left and to the right of the selection */
lseg = editor->control_sel_l->prev;
rseg = editor->control_sel_r->next;
/* Cannot delete all the segments in the gradient */
if ((lseg == NULL) && (rseg == NULL))
return;
/* Calculate join point */
join = (editor->control_sel_l->left +
editor->control_sel_r->right) / 2.0;
if (lseg == NULL)
join = 0.0;
else if (rseg == NULL)
join = 1.0;
/* Move segments */
if (lseg != NULL)
gimp_gradient_segments_compress_range (lseg, lseg, lseg->left, join);
if (rseg != NULL)
gimp_gradient_segments_compress_range (rseg, rseg, join, rseg->right);
/* Link */
if (lseg)
lseg->next = rseg;
if (rseg)
rseg->prev = lseg;
/* Delete old segments */
seg = editor->control_sel_l;
do
{
next = seg->next;
aseg = seg;
gimp_gradient_segment_free (seg);
seg = next;
}
while (aseg != editor->control_sel_r);
/* Change selection */
if (rseg)
{
editor->control_sel_l = rseg;
editor->control_sel_r = rseg;
}
else
{
editor->control_sel_l = lseg;
editor->control_sel_r = lseg;
}
if (lseg == NULL)
gradient->segments = rseg;
/* Done */
gimp_data_dirty (GIMP_DATA (gradient));
gimp_gradient_editor_update (editor);
}
void
gradient_editor_recenter_cmd_callback (GtkWidget *widget,
gpointer data,
guint action)
{
GimpGradientEditor *editor;
GimpGradient *gradient;
GimpGradientSegment *seg, *aseg;
editor = GIMP_GRADIENT_EDITOR (data);
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
seg = editor->control_sel_l;
do
{
seg->middle = (seg->left + seg->right) / 2.0;
aseg = seg;
seg = seg->next;
}
while (aseg != editor->control_sel_r);
gimp_data_dirty (GIMP_DATA (gradient));
gimp_gradient_editor_update (editor);
}
void
gradient_editor_redistribute_cmd_callback (GtkWidget *widget,
gpointer data,
guint action)
{
GimpGradientEditor *editor;
GimpGradient *gradient;
GimpGradientSegment *seg, *aseg;
gdouble left, right, seg_len;
gint num_segs;
gint i;
editor = GIMP_GRADIENT_EDITOR (data);
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
/* Count number of segments in selection */
num_segs = 0;
seg = editor->control_sel_l;
do
{
num_segs++;
aseg = seg;
seg = seg->next;
}
while (aseg != editor->control_sel_r);
/* Calculate new segment length */
left = editor->control_sel_l->left;
right = editor->control_sel_r->right;
seg_len = (right - left) / num_segs;
/* Redistribute */
seg = editor->control_sel_l;
for (i = 0; i < num_segs; i++)
{
seg->left = left + i * seg_len;
seg->right = left + (i + 1) * seg_len;
seg->middle = (seg->left + seg->right) / 2.0;
seg = seg->next;
}
/* Fix endpoints to squish accumulative error */
editor->control_sel_l->left = left;
editor->control_sel_r->right = right;
/* Done */
gimp_data_dirty (GIMP_DATA (gradient));
gimp_gradient_editor_update (editor);
}
void
gradient_editor_blend_color_cmd_callback (GtkWidget *widget,
gpointer data,
guint action)
{
GimpGradientEditor *editor;
editor = GIMP_GRADIENT_EDITOR (data);
gimp_gradient_segments_blend_endpoints (editor->control_sel_l,
editor->control_sel_r,
&editor->control_sel_l->left_color,
&editor->control_sel_r->right_color,
TRUE, FALSE);
gimp_data_dirty (GIMP_DATA_EDITOR (editor)->data);
}
void
gradient_editor_blend_opacity_cmd_callback (GtkWidget *widget,
gpointer data,
guint action)
{
GimpGradientEditor *editor;
editor = GIMP_GRADIENT_EDITOR (data);
gimp_gradient_segments_blend_endpoints (editor->control_sel_l,
editor->control_sel_r,
&editor->control_sel_l->left_color,
&editor->control_sel_r->right_color,
FALSE, TRUE);
gimp_data_dirty (GIMP_DATA_EDITOR (editor)->data);
}
/* private functions */
static void
gradient_editor_left_color_changed (ColorNotebook *cnb,
const GimpRGB *color,
ColorNotebookState state,
gpointer data)
{
GimpGradientEditor *editor;
GimpGradient *gradient;
editor = (GimpGradientEditor *) data;
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
switch (state)
{
case COLOR_NOTEBOOK_UPDATE:
gimp_gradient_segments_blend_endpoints (editor->control_sel_l,
editor->control_sel_r,
(GimpRGB *) color,
&editor->control_sel_r->right_color,
TRUE, TRUE);
gimp_data_dirty (GIMP_DATA (gradient));
break;
case COLOR_NOTEBOOK_OK:
gimp_gradient_segments_blend_endpoints (editor->control_sel_l,
editor->control_sel_r,
(GimpRGB *) color,
&editor->control_sel_r->right_color,
TRUE, TRUE);
gimp_gradient_segments_free (editor->left_saved_segments);
gimp_data_dirty (GIMP_DATA (gradient));
color_notebook_free (cnb);
editor->color_notebook = NULL;
gtk_widget_set_sensitive (GTK_WIDGET (editor), TRUE);
break;
case COLOR_NOTEBOOK_CANCEL:
gradient_editor_replace_selection (editor, editor->left_saved_segments);
GIMP_DATA (gradient)->dirty = editor->left_saved_dirty;
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (gradient));
color_notebook_free (cnb);
editor->color_notebook = NULL;
gtk_widget_set_sensitive (GTK_WIDGET (editor), TRUE);
break;
}
}
static void
gradient_editor_right_color_changed (ColorNotebook *cnb,
const GimpRGB *color,
ColorNotebookState state,
gpointer data)
{
GimpGradientEditor *editor;
GimpGradient *gradient;
editor = (GimpGradientEditor *) data;
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
switch (state)
{
case COLOR_NOTEBOOK_UPDATE:
gimp_gradient_segments_blend_endpoints (editor->control_sel_l,
editor->control_sel_r,
&editor->control_sel_r->left_color,
(GimpRGB *) color,
TRUE, TRUE);
gimp_data_dirty (GIMP_DATA (gradient));
break;
case COLOR_NOTEBOOK_OK:
gimp_gradient_segments_blend_endpoints (editor->control_sel_l,
editor->control_sel_r,
&editor->control_sel_r->left_color,
(GimpRGB *) color,
TRUE, TRUE);
gimp_gradient_segments_free (editor->right_saved_segments);
gimp_data_dirty (GIMP_DATA (gradient));
color_notebook_free (cnb);
editor->color_notebook = NULL;
gtk_widget_set_sensitive (GTK_WIDGET (editor), TRUE);
break;
case COLOR_NOTEBOOK_CANCEL:
gradient_editor_replace_selection (editor, editor->right_saved_segments);
GIMP_DATA (gradient)->dirty = editor->right_saved_dirty;
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (gradient));
color_notebook_free (cnb);
editor->color_notebook = NULL;
gtk_widget_set_sensitive (GTK_WIDGET (editor), TRUE);
break;
}
}
static GimpGradientSegment *
gradient_editor_save_selection (GimpGradientEditor *editor)
{
GimpGradientSegment *seg, *prev, *tmp;
GimpGradientSegment *oseg, *oaseg;
prev = NULL;
oseg = editor->control_sel_l;
tmp = NULL;
do
{
seg = gimp_gradient_segment_new ();
*seg = *oseg; /* Copy everything */
if (prev == NULL)
tmp = seg; /* Remember first segment */
else
prev->next = seg;
seg->prev = prev;
seg->next = NULL;
prev = seg;
oaseg = oseg;
oseg = oseg->next;
}
while (oaseg != editor->control_sel_r);
return tmp;
}
static void
gradient_editor_replace_selection (GimpGradientEditor *editor,
GimpGradientSegment *replace_seg)
{
GimpGradient *gradient;
GimpGradientSegment *lseg, *rseg;
GimpGradientSegment *replace_last;
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
/* Remember left and right segments */
lseg = editor->control_sel_l->prev;
rseg = editor->control_sel_r->next;
replace_last = gimp_gradient_segment_get_last (replace_seg);
/* Free old selection */
editor->control_sel_r->next = NULL;
gimp_gradient_segments_free (editor->control_sel_l);
/* Link in new segments */
if (lseg)
lseg->next = replace_seg;
else
gradient->segments = replace_seg;
replace_seg->prev = lseg;
if (rseg)
rseg->prev = replace_last;
replace_last->next = rseg;
editor->control_sel_l = replace_seg;
editor->control_sel_r = replace_last;
gradient->last_visited = NULL; /* Force re-search */
}
static void
gradient_editor_split_uniform_response (GtkWidget *widget,
gint response_id,
GimpGradientEditor *editor)
{
gtk_widget_destroy (widget);
gtk_widget_set_sensitive (GTK_WIDGET (editor), TRUE);
if (response_id == GTK_RESPONSE_OK)
{
GimpGradient *gradient;
GimpGradientSegment *seg, *aseg, *lseg, *rseg, *lsel;
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
seg = editor->control_sel_l;
lsel = NULL;
do
{
aseg = seg;
gimp_gradient_segment_split_uniform (gradient, seg,
editor->split_parts,
&lseg, &rseg);
if (seg == editor->control_sel_l)
lsel = lseg;
seg = rseg->next;
}
while (aseg != editor->control_sel_r);
editor->control_sel_l = lsel;
editor->control_sel_r = rseg;
gimp_data_dirty (GIMP_DATA (gradient));
gimp_gradient_editor_update (editor);
}
}
static void
gradient_editor_replicate_response (GtkWidget *widget,
gint response_id,
GimpGradientEditor *editor)
{
gtk_widget_destroy (widget);
gtk_widget_set_sensitive (GTK_WIDGET (editor), TRUE);
if (response_id == GTK_RESPONSE_OK)
{
GimpGradient *gradient;
gdouble sel_left, sel_right, sel_len;
gdouble new_left;
gdouble factor;
GimpGradientSegment *prev, *seg, *tmp;
GimpGradientSegment *oseg, *oaseg;
GimpGradientSegment *lseg, *rseg;
gint i;
gradient = GIMP_GRADIENT (GIMP_DATA_EDITOR (editor)->data);
/* Remember original parameters */
sel_left = editor->control_sel_l->left;
sel_right = editor->control_sel_r->right;
sel_len = sel_right - sel_left;
factor = 1.0 / editor->replicate_times;
/* Build replicated segments */
prev = NULL;
seg = NULL;
tmp = NULL;
for (i = 0; i < editor->replicate_times; i++)
{
/* Build one cycle */
new_left = sel_left + i * factor * sel_len;
oseg = editor->control_sel_l;
do
{
seg = gimp_gradient_segment_new ();
if (prev == NULL)
{
seg->left = sel_left;
tmp = seg; /* Remember first segment */
}
else
{
seg->left = new_left + factor * (oseg->left - sel_left);
}
seg->middle = new_left + factor * (oseg->middle - sel_left);
seg->right = new_left + factor * (oseg->right - sel_left);
seg->left_color = oseg->left_color;
seg->right_color = oseg->right_color;
seg->type = oseg->type;
seg->color = oseg->color;
seg->prev = prev;
seg->next = NULL;
if (prev)
prev->next = seg;
prev = seg;
oaseg = oseg;
oseg = oseg->next;
}
while (oaseg != editor->control_sel_r);
}
seg->right = sel_right; /* Squish accumulative error */
/* Free old segments */
lseg = editor->control_sel_l->prev;
rseg = editor->control_sel_r->next;
oseg = editor->control_sel_l;
do
{
oaseg = oseg->next;
gimp_gradient_segment_free (oseg);
oseg = oaseg;
}
while (oaseg != rseg);
/* Link in new segments */
if (lseg)
lseg->next = tmp;
else
gradient->segments = tmp;
tmp->prev = lseg;
seg->next = rseg;
if (rseg)
rseg->prev = seg;
/* Reset selection */
editor->control_sel_l = tmp;
editor->control_sel_r = seg;
/* Done */
gimp_data_dirty (GIMP_DATA (gradient));
gimp_gradient_editor_update (editor);
}
}
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