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Gimp/app/tools/gimpgradienttool.c
Michael Natterer c480a66187 app: add accessors for GimpDrawableFilter::temporary and use them 
instead of using the property dirtectly.  Also make sure temporary
filters don't go to the undo stack or to the XCF.

(cherry picked from commit 2baab5aa74)
2025-08-09 18:11:14 +02:00

1157 lines
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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* Major improvements for interactivity
* Copyright (C) 2014 Michael Henning <drawoc@darkrefraction.com>
*
* 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 <gdk/gdkkeysyms.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "config/gimpguiconfig.h"
#include "gegl/gimp-gegl-utils.h"
#include "operations/gimp-operation-config.h"
#include "operations/layer-modes/gimp-layer-modes.h"
#include "core/gimp.h"
#include "core/gimpcontainer.h"
#include "core/gimpdrawable.h"
#include "core/gimpdrawable-filters.h"
#include "core/gimpdrawable-gradient.h"
#include "core/gimpdrawablefilter.h"
#include "core/gimperror.h"
#include "core/gimpgradient.h"
#include "core/gimpimage.h"
#include "core/gimpprogress.h"
#include "core/gimpprojection.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimpwidgets-utils.h"
#include "display/gimpdisplay.h"
#include "display/gimptoolline.h"
#include "gimpgradientoptions.h"
#include "gimpgradienttool.h"
#include "gimpgradienttool-editor.h"
#include "gimptoolcontrol.h"
#include "gimptools-utils.h"
#include "gimp-intl.h"
/* local function prototypes */
static void gimp_gradient_tool_dispose (GObject *object);
static gboolean gimp_gradient_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error);
static void gimp_gradient_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display);
static void gimp_gradient_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display);
static void gimp_gradient_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display);
static void gimp_gradient_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static gboolean gimp_gradient_tool_key_press (GimpTool *tool,
GdkEventKey *kevent,
GimpDisplay *display);
static void gimp_gradient_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display);
static void gimp_gradient_tool_cursor_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display);
static const gchar * gimp_gradient_tool_can_undo (GimpTool *tool,
GimpDisplay *display);
static const gchar * gimp_gradient_tool_can_redo (GimpTool *tool,
GimpDisplay *display);
static gboolean gimp_gradient_tool_undo (GimpTool *tool,
GimpDisplay *display);
static gboolean gimp_gradient_tool_redo (GimpTool *tool,
GimpDisplay *display);
static void gimp_gradient_tool_options_notify (GimpTool *tool,
GimpToolOptions *options,
const GParamSpec *pspec);
static void gimp_gradient_tool_start (GimpGradientTool *gradient_tool,
const GimpCoords *coords,
GimpDisplay *display);
static void gimp_gradient_tool_halt (GimpGradientTool *gradient_tool);
static void gimp_gradient_tool_commit (GimpGradientTool *gradient_tool);
static void gimp_gradient_tool_line_changed (GimpToolWidget *widget,
GimpGradientTool *gradient_tool);
static void gimp_gradient_tool_line_response (GimpToolWidget *widget,
gint response_id,
GimpGradientTool *gradient_tool);
static void gimp_gradient_tool_precalc_shapeburst (GimpGradientTool *gradient_tool);
static void gimp_gradient_tool_create_graph (GimpGradientTool *gradient_tool);
static void gimp_gradient_tool_update_graph (GimpGradientTool *gradient_tool);
static void gimp_gradient_tool_fg_bg_changed (GimpGradientTool *gradient_tool);
static void gimp_gradient_tool_gradient_dirty (GimpGradientTool *gradient_tool);
static void gimp_gradient_tool_set_gradient (GimpGradientTool *gradient_tool,
GimpGradient *gradient);
static gboolean gimp_gradient_tool_is_shapeburst (GimpGradientTool *gradient_tool);
static void gimp_gradient_tool_create_filter (GimpGradientTool *gradient_tool,
GimpDrawable *drawable);
static void gimp_gradient_tool_filter_flush (GimpDrawableFilter *filter,
GimpTool *tool);
G_DEFINE_TYPE (GimpGradientTool, gimp_gradient_tool, GIMP_TYPE_DRAW_TOOL)
#define parent_class gimp_gradient_tool_parent_class
void
gimp_gradient_tool_register (GimpToolRegisterCallback callback,
gpointer data)
{
(* callback) (GIMP_TYPE_GRADIENT_TOOL,
GIMP_TYPE_GRADIENT_OPTIONS,
gimp_gradient_options_gui,
GIMP_CONTEXT_PROP_MASK_FOREGROUND |
GIMP_CONTEXT_PROP_MASK_BACKGROUND |
GIMP_CONTEXT_PROP_MASK_OPACITY |
GIMP_CONTEXT_PROP_MASK_PAINT_MODE |
GIMP_CONTEXT_PROP_MASK_GRADIENT,
"gimp-gradient-tool",
_("Gradient"),
_("Gradient Tool: Fill selected area with a color gradient"),
N_("Gra_dient"), "G",
NULL, GIMP_HELP_TOOL_GRADIENT,
GIMP_ICON_TOOL_GRADIENT,
data);
}
static void
gimp_gradient_tool_class_init (GimpGradientToolClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
object_class->dispose = gimp_gradient_tool_dispose;
tool_class->initialize = gimp_gradient_tool_initialize;
tool_class->control = gimp_gradient_tool_control;
tool_class->button_press = gimp_gradient_tool_button_press;
tool_class->button_release = gimp_gradient_tool_button_release;
tool_class->motion = gimp_gradient_tool_motion;
tool_class->key_press = gimp_gradient_tool_key_press;
tool_class->modifier_key = gimp_gradient_tool_modifier_key;
tool_class->cursor_update = gimp_gradient_tool_cursor_update;
tool_class->can_undo = gimp_gradient_tool_can_undo;
tool_class->can_redo = gimp_gradient_tool_can_redo;
tool_class->undo = gimp_gradient_tool_undo;
tool_class->redo = gimp_gradient_tool_redo;
tool_class->options_notify = gimp_gradient_tool_options_notify;
}
static void
gimp_gradient_tool_init (GimpGradientTool *gradient_tool)
{
GimpTool *tool = GIMP_TOOL (gradient_tool);
gimp_tool_control_set_scroll_lock (tool->control, TRUE);
gimp_tool_control_set_preserve (tool->control, FALSE);
gimp_tool_control_set_dirty_mask (tool->control,
GIMP_DIRTY_IMAGE |
GIMP_DIRTY_IMAGE_STRUCTURE |
GIMP_DIRTY_DRAWABLE |
GIMP_DIRTY_ACTIVE_DRAWABLE);
gimp_tool_control_set_dirty_action (tool->control,
GIMP_TOOL_ACTION_COMMIT);
gimp_tool_control_set_wants_click (tool->control, TRUE);
gimp_tool_control_set_wants_double_click (tool->control, TRUE);
gimp_tool_control_set_active_modifiers (tool->control,
GIMP_TOOL_ACTIVE_MODIFIERS_SEPARATE);
gimp_tool_control_set_precision (tool->control,
GIMP_CURSOR_PRECISION_SUBPIXEL);
gimp_tool_control_set_tool_cursor (tool->control,
GIMP_TOOL_CURSOR_GRADIENT);
gimp_tool_control_set_action_opacity (tool->control,
"context-opacity-set");
gimp_tool_control_set_action_object_1 (tool->control,
"context-gradient-select-set");
gimp_draw_tool_set_default_status (GIMP_DRAW_TOOL (tool),
_("Click-Drag to draw a gradient"));
}
static void
gimp_gradient_tool_dispose (GObject *object)
{
GimpGradientTool *gradient_tool = GIMP_GRADIENT_TOOL (object);
gimp_gradient_tool_set_gradient (gradient_tool, NULL);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static gboolean
gimp_gradient_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error)
{
GimpImage *image = gimp_display_get_image (display);
GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (tool);
GimpGuiConfig *config = GIMP_GUI_CONFIG (display->gimp->config);
GimpItem *locked_item = NULL;
GList *drawables;
GimpDrawable *drawable;
if (! GIMP_TOOL_CLASS (parent_class)->initialize (tool, display, error))
{
return FALSE;
}
drawables = gimp_image_get_selected_drawables (image);
if (g_list_length (drawables) != 1)
{
if (g_list_length (drawables) > 1)
gimp_tool_message_literal (tool, display,
_("Cannot paint on multiple drawables. Select only one."));
else
gimp_tool_message_literal (tool, display, _("No active drawables."));
g_list_free (drawables);
return FALSE;
}
/* Only a single drawable at this point. */
drawable = drawables->data;
g_list_free (drawables);
if (gimp_viewable_get_children (GIMP_VIEWABLE (drawable)))
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("Cannot modify the pixels of layer groups."));
return FALSE;
}
if (gimp_item_is_content_locked (GIMP_ITEM (drawable), &locked_item))
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("The selected layer's pixels are locked."));
if (error)
gimp_tools_blink_lock_box (display->gimp, locked_item);
return FALSE;
}
if (! gimp_item_is_visible (GIMP_ITEM (drawable)) &&
! config->edit_non_visible)
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("The selected item is not visible."));
return FALSE;
}
if (! gimp_context_get_gradient (GIMP_CONTEXT (options)))
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("No gradient available for use with this tool."));
return FALSE;
}
return TRUE;
}
static void
gimp_gradient_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display)
{
GimpGradientTool *gradient_tool = GIMP_GRADIENT_TOOL (tool);
switch (action)
{
case GIMP_TOOL_ACTION_PAUSE:
case GIMP_TOOL_ACTION_RESUME:
break;
case GIMP_TOOL_ACTION_HALT:
gimp_gradient_tool_halt (gradient_tool);
break;
case GIMP_TOOL_ACTION_COMMIT:
gimp_gradient_tool_commit (gradient_tool);
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, display);
}
static void
gimp_gradient_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display)
{
GimpGradientTool *gradient_tool = GIMP_GRADIENT_TOOL (tool);
if (tool->display && display != tool->display)
gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, tool->display);
if (! gradient_tool->widget)
{
gimp_gradient_tool_start (gradient_tool, coords, display);
gimp_tool_widget_hover (gradient_tool->widget, coords, state, TRUE);
}
/* call start_edit() before widget_button_press(), because we need to record
* the undo state before widget_button_press() potentially changes it. note
* that if widget_button_press() return FALSE, nothing changes and no undo
* step is created.
*/
if (press_type == GIMP_BUTTON_PRESS_NORMAL)
gimp_gradient_tool_editor_start_edit (gradient_tool);
if (gimp_tool_widget_button_press (gradient_tool->widget, coords, time, state,
press_type))
{
gradient_tool->grab_widget = gradient_tool->widget;
}
if (press_type == GIMP_BUTTON_PRESS_NORMAL)
gimp_tool_control_activate (tool->control);
}
static void
gimp_gradient_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display)
{
GimpGradientTool *gradient_tool = GIMP_GRADIENT_TOOL (tool);
GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (tool);
gimp_tool_pop_status (tool, display);
gimp_tool_control_halt (tool->control);
if (gradient_tool->grab_widget)
{
gimp_tool_widget_button_release (gradient_tool->grab_widget,
coords, time, state, release_type);
gradient_tool->grab_widget = NULL;
if (options->instant)
{
if (release_type == GIMP_BUTTON_RELEASE_CANCEL)
gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, display);
else
gimp_tool_control (tool, GIMP_TOOL_ACTION_COMMIT, display);
}
}
if (! options->instant)
{
gimp_gradient_tool_editor_end_edit (gradient_tool,
release_type ==
GIMP_BUTTON_RELEASE_CANCEL);
}
}
static void
gimp_gradient_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpGradientTool *gradient_tool = GIMP_GRADIENT_TOOL (tool);
if (gradient_tool->grab_widget)
{
gimp_tool_widget_motion (gradient_tool->grab_widget, coords, time, state);
}
}
static gboolean
gimp_gradient_tool_key_press (GimpTool *tool,
GdkEventKey *kevent,
GimpDisplay *display)
{
GimpGradientTool *gradient_tool = GIMP_GRADIENT_TOOL (tool);
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
gboolean result;
/* call start_edit() before widget_key_press(), because we need to record the
* undo state before widget_key_press() potentially changes it. note that if
* widget_key_press() return FALSE, nothing changes and no undo step is
* created.
*/
if (display == draw_tool->display)
gimp_gradient_tool_editor_start_edit (gradient_tool);
result = GIMP_TOOL_CLASS (parent_class)->key_press (tool, kevent, display);
if (display == draw_tool->display)
gimp_gradient_tool_editor_end_edit (gradient_tool, FALSE);
return result;
}
static void
gimp_gradient_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display)
{
GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (tool);
if (key == gimp_get_extend_selection_mask ())
{
if (options->instant_toggle &&
gtk_widget_get_sensitive (options->instant_toggle))
{
g_object_set (options,
"instant", ! options->instant,
NULL);
}
}
}
static void
gimp_gradient_tool_cursor_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
GimpGuiConfig *config = GIMP_GUI_CONFIG (display->gimp->config);
GimpImage *image = gimp_display_get_image (display);
GList *drawables = gimp_image_get_selected_drawables (image);
if (g_list_length (drawables) != 1 ||
gimp_viewable_get_children (drawables->data) ||
gimp_item_is_content_locked (drawables->data, NULL) ||
! (gimp_item_is_visible (drawables->data) ||
config->edit_non_visible))
{
gimp_tool_set_cursor (tool, display,
gimp_tool_control_get_cursor (tool->control),
gimp_tool_control_get_tool_cursor (tool->control),
GIMP_CURSOR_MODIFIER_BAD);
g_list_free (drawables);
return;
}
g_list_free (drawables);
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static const gchar *
gimp_gradient_tool_can_undo (GimpTool *tool,
GimpDisplay *display)
{
return gimp_gradient_tool_editor_can_undo (GIMP_GRADIENT_TOOL (tool));
}
static const gchar *
gimp_gradient_tool_can_redo (GimpTool *tool,
GimpDisplay *display)
{
return gimp_gradient_tool_editor_can_redo (GIMP_GRADIENT_TOOL (tool));
}
static gboolean
gimp_gradient_tool_undo (GimpTool *tool,
GimpDisplay *display)
{
return gimp_gradient_tool_editor_undo (GIMP_GRADIENT_TOOL (tool));
}
static gboolean
gimp_gradient_tool_redo (GimpTool *tool,
GimpDisplay *display)
{
return gimp_gradient_tool_editor_redo (GIMP_GRADIENT_TOOL (tool));
}
static void
gimp_gradient_tool_options_notify (GimpTool *tool,
GimpToolOptions *options,
const GParamSpec *pspec)
{
GimpContext *context = GIMP_CONTEXT (options);
GimpGradientTool *gradient_tool = GIMP_GRADIENT_TOOL (tool);
if (! strcmp (pspec->name, "gradient"))
{
gimp_gradient_tool_set_gradient (gradient_tool, context->gradient);
if (gradient_tool->filter)
gimp_drawable_filter_apply (gradient_tool->filter, NULL);
}
else if (gradient_tool->render_node &&
gegl_node_find_property (gradient_tool->render_node, pspec->name))
{
/* Sync any property changes on the config object that match the op */
GValue value = G_VALUE_INIT;
g_value_init (&value, pspec->value_type);
g_object_get_property (G_OBJECT (options), pspec->name, &value);
gegl_node_set_property (gradient_tool->render_node, pspec->name, &value);
g_value_unset (&value);
if (! strcmp (pspec->name, "gradient-type"))
{
GimpRepeatMode gradient_repeat;
GimpRepeatMode node_repeat;
GimpGradientType gradient_type;
gradient_repeat = GIMP_PAINT_OPTIONS (options)->gradient_options->gradient_repeat;
gradient_type = GIMP_GRADIENT_OPTIONS (options)->gradient_type;
gegl_node_get (gradient_tool->render_node,
"gradient-repeat", &node_repeat,
NULL);
if (gradient_type >= GIMP_GRADIENT_SHAPEBURST_ANGULAR)
{
/* These gradient types are only meant to work with repeat
* value of "none" so these are the only ones where we
* don't keep the render node and the gradient options in
* sync.
* We could instead reset the "gradient-repeat" value on
* GimpGradientOptions, but I assume one would want to revert
* back to the last set value if changing back the
* gradient type. So instead we just make the option
* insensitive (both in GUI and in render).
*/
if (node_repeat != GIMP_REPEAT_NONE)
gegl_node_set (gradient_tool->render_node,
"gradient-repeat", GIMP_REPEAT_NONE,
NULL);
}
else if (node_repeat != gradient_repeat)
{
gegl_node_set (gradient_tool->render_node,
"gradient-repeat", gradient_repeat,
NULL);
}
if (gimp_gradient_tool_is_shapeburst (gradient_tool))
gimp_gradient_tool_precalc_shapeburst (gradient_tool);
gimp_gradient_tool_update_graph (gradient_tool);
}
gimp_drawable_filter_apply (gradient_tool->filter, NULL);
}
else if (gradient_tool->render_node &&
gimp_gradient_tool_is_shapeburst (gradient_tool) &&
g_strcmp0 (pspec->name, "distance-metric") == 0)
{
g_clear_object (&gradient_tool->dist_buffer);
gimp_gradient_tool_precalc_shapeburst (gradient_tool);
gimp_gradient_tool_update_graph (gradient_tool);
gimp_drawable_filter_apply (gradient_tool->filter, NULL);
}
else if (gradient_tool->filter &&
! strcmp (pspec->name, "opacity"))
{
gimp_drawable_filter_set_opacity (gradient_tool->filter,
gimp_context_get_opacity (context));
}
else if (gradient_tool->filter &&
! strcmp (pspec->name, "paint-mode"))
{
gimp_drawable_filter_set_mode (gradient_tool->filter,
gimp_context_get_paint_mode (context),
GIMP_LAYER_COLOR_SPACE_AUTO,
GIMP_LAYER_COLOR_SPACE_AUTO,
gimp_layer_mode_get_paint_composite_mode (
gimp_context_get_paint_mode (context)));
}
gimp_gradient_tool_editor_options_notify (gradient_tool, options, pspec);
}
static void
gimp_gradient_tool_start (GimpGradientTool *gradient_tool,
const GimpCoords *coords,
GimpDisplay *display)
{
GimpTool *tool = GIMP_TOOL (gradient_tool);
GimpDisplayShell *shell = gimp_display_get_shell (display);
GimpImage *image = gimp_display_get_image (display);
GList *drawables = gimp_image_get_selected_drawables (image);
GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
GimpContext *context = GIMP_CONTEXT (options);
GimpContainer *filters;
g_return_if_fail (g_list_length (drawables) == 1);
if (options->instant_toggle)
gtk_widget_set_sensitive (options->instant_toggle, FALSE);
tool->display = display;
g_list_free (tool->drawables);
tool->drawables = drawables;
gradient_tool->start_x = coords->x;
gradient_tool->start_y = coords->y;
gradient_tool->end_x = coords->x;
gradient_tool->end_y = coords->y;
gradient_tool->widget = gimp_tool_line_new (shell,
gradient_tool->start_x,
gradient_tool->start_y,
gradient_tool->end_x,
gradient_tool->end_y);
g_object_set (gradient_tool->widget,
"status-title", _("Gradient: "),
NULL);
gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (tool), gradient_tool->widget);
g_signal_connect (gradient_tool->widget, "changed",
G_CALLBACK (gimp_gradient_tool_line_changed),
gradient_tool);
g_signal_connect (gradient_tool->widget, "response",
G_CALLBACK (gimp_gradient_tool_line_response),
gradient_tool);
g_signal_connect_swapped (context, "background-changed",
G_CALLBACK (gimp_gradient_tool_fg_bg_changed),
gradient_tool);
g_signal_connect_swapped (context, "foreground-changed",
G_CALLBACK (gimp_gradient_tool_fg_bg_changed),
gradient_tool);
gimp_gradient_tool_create_filter (gradient_tool, tool->drawables->data);
/* Initially sync all of the properties */
gimp_operation_config_sync_node (G_OBJECT (options),
gradient_tool->render_node);
/* We don't allow repeat values for some shapes. */
if (options->gradient_type >= GIMP_GRADIENT_SHAPEBURST_ANGULAR)
gegl_node_set (gradient_tool->render_node,
"gradient-repeat", GIMP_REPEAT_NONE,
NULL);
/* Connect signal handlers for the gradient */
gimp_gradient_tool_set_gradient (gradient_tool, context->gradient);
if (gimp_gradient_tool_is_shapeburst (gradient_tool))
gimp_gradient_tool_precalc_shapeburst (gradient_tool);
gimp_draw_tool_start (GIMP_DRAW_TOOL (gradient_tool), display);
gimp_gradient_tool_editor_start (gradient_tool);
gimp_drawable_filter_apply (gradient_tool->filter, NULL);
/* Move this operation below any non-destructive filters that
* may be active, so that it's directly affect the raw pixels. */
filters =
gimp_drawable_get_filters (gimp_drawable_filter_get_drawable (gradient_tool->filter));
if (gimp_container_have (filters, GIMP_OBJECT (gradient_tool->filter)))
{
gint end_index = gimp_container_get_n_children (filters) - 1;
gint index = gimp_container_get_child_index (filters,
GIMP_OBJECT (gradient_tool->filter));
if (end_index > 0 && index != end_index)
gimp_container_reorder (filters, GIMP_OBJECT (gradient_tool->filter),
end_index);
}
}
static void
gimp_gradient_tool_halt (GimpGradientTool *gradient_tool)
{
GimpTool *tool = GIMP_TOOL (gradient_tool);
GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
GimpContext *context = GIMP_CONTEXT (options);
gimp_gradient_tool_editor_halt (gradient_tool);
if (gradient_tool->graph)
{
g_clear_object (&gradient_tool->graph);
gradient_tool->render_node = NULL;
#if 0
gradient_tool->subtract_node = NULL;
gradient_tool->divide_node = NULL;
#endif
gradient_tool->dist_node = NULL;
}
g_clear_object (&gradient_tool->dist_buffer);
if (gradient_tool->filter)
{
gimp_tool_control_push_preserve (tool->control, TRUE);
gimp_drawable_filter_abort (gradient_tool->filter);
g_object_unref (gradient_tool->filter);
gradient_tool->filter = NULL;
gimp_tool_control_pop_preserve (tool->control);
gimp_image_flush (gimp_display_get_image (tool->display));
}
gimp_gradient_tool_set_tentative_gradient (gradient_tool, NULL);
g_signal_handlers_disconnect_by_func (context,
G_CALLBACK (gimp_gradient_tool_fg_bg_changed),
gradient_tool);
if (tool->display)
gimp_tool_pop_status (tool, tool->display);
if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (gradient_tool)))
gimp_draw_tool_stop (GIMP_DRAW_TOOL (gradient_tool));
gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (tool), NULL);
g_clear_object (&gradient_tool->widget);
tool->display = NULL;
g_list_free (tool->drawables);
tool->drawables = NULL;
if (options->instant_toggle)
gtk_widget_set_sensitive (options->instant_toggle, TRUE);
}
static void
gimp_gradient_tool_commit (GimpGradientTool *gradient_tool)
{
GimpTool *tool = GIMP_TOOL (gradient_tool);
if (gradient_tool->filter)
{
/* halt the editor before committing the filter so that the image-flush
* idle source is removed, to avoid flushing the image, and hence
* restarting the projection rendering, while applying the filter.
*/
gimp_gradient_tool_editor_halt (gradient_tool);
gimp_tool_control_push_preserve (tool->control, TRUE);
gimp_drawable_filter_commit (gradient_tool->filter, FALSE,
GIMP_PROGRESS (tool), FALSE);
g_clear_object (&gradient_tool->filter);
gimp_tool_control_pop_preserve (tool->control);
gimp_image_flush (gimp_display_get_image (tool->display));
}
}
static void
gimp_gradient_tool_line_changed (GimpToolWidget *widget,
GimpGradientTool *gradient_tool)
{
gdouble start_x;
gdouble start_y;
gdouble end_x;
gdouble end_y;
gboolean update = FALSE;
g_object_get (widget,
"x1", &start_x,
"y1", &start_y,
"x2", &end_x,
"y2", &end_y,
NULL);
if (start_x != gradient_tool->start_x ||
start_y != gradient_tool->start_y ||
end_x != gradient_tool->end_x ||
end_y != gradient_tool->end_y)
{
gradient_tool->start_x = start_x;
gradient_tool->start_y = start_y;
gradient_tool->end_x = end_x;
gradient_tool->end_y = end_y;
update = TRUE;
}
if (gimp_gradient_tool_editor_line_changed (gradient_tool))
update = TRUE;
if (update)
{
gimp_gradient_tool_update_graph (gradient_tool);
gimp_drawable_filter_apply (gradient_tool->filter, NULL);
}
}
static void
gimp_gradient_tool_line_response (GimpToolWidget *widget,
gint response_id,
GimpGradientTool *gradient_tool)
{
GimpTool *tool = GIMP_TOOL (gradient_tool);
switch (response_id)
{
case GIMP_TOOL_WIDGET_RESPONSE_CONFIRM:
gimp_tool_control (tool, GIMP_TOOL_ACTION_COMMIT, tool->display);
break;
case GIMP_TOOL_WIDGET_RESPONSE_CANCEL:
gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, tool->display);
break;
}
}
static void
gimp_gradient_tool_precalc_shapeburst (GimpGradientTool *gradient_tool)
{
GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
GimpTool *tool = GIMP_TOOL (gradient_tool);
gint x, y, width, height;
if (gradient_tool->dist_buffer || ! tool->drawables)
return;
g_return_if_fail (g_list_length (tool->drawables) == 1);
if (! gimp_item_mask_intersect (GIMP_ITEM (tool->drawables->data),
&x, &y, &width, &height))
return;
gradient_tool->dist_buffer =
gimp_drawable_gradient_shapeburst_distmap (tool->drawables->data,
options->distance_metric,
GEGL_RECTANGLE (x, y, width, height),
GIMP_PROGRESS (gradient_tool));
if (gradient_tool->dist_node)
gegl_node_set (gradient_tool->dist_node,
"buffer", gradient_tool->dist_buffer,
NULL);
gimp_progress_end (GIMP_PROGRESS (gradient_tool));
}
/* gegl graph stuff */
static void
gimp_gradient_tool_create_graph (GimpGradientTool *gradient_tool)
{
GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
GimpContext *context = GIMP_CONTEXT (options);
GeglNode *output;
/* render_node is not supposed to be recreated */
g_return_if_fail (gradient_tool->graph == NULL);
gradient_tool->graph = gegl_node_new ();
gradient_tool->dist_node =
gegl_node_new_child (gradient_tool->graph,
"operation", "gegl:buffer-source",
"buffer", gradient_tool->dist_buffer,
NULL);
#if 0
gradient_tool->subtract_node =
gegl_node_new_child (gradient_tool->graph,
"operation", "gegl:subtract",
NULL);
gradient_tool->divide_node =
gegl_node_new_child (gradient_tool->graph,
"operation", "gegl:divide",
NULL);
#endif
gradient_tool->render_node =
gegl_node_new_child (gradient_tool->graph,
"operation", "gimp:gradient",
"context", context,
NULL);
output = gegl_node_get_output_proxy (gradient_tool->graph, "output");
gegl_node_link_many (gradient_tool->dist_node,
#if 0
gradient_tool->subtract_node,
gradient_tool->divide_node,
#endif
gradient_tool->render_node,
output,
NULL);
gimp_gegl_node_set_underlying_operation (gradient_tool->graph,
gradient_tool->render_node);
gimp_gradient_tool_update_graph (gradient_tool);
}
static void
gimp_gradient_tool_update_graph (GimpGradientTool *gradient_tool)
{
GimpTool *tool = GIMP_TOOL (gradient_tool);
GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
gint off_x, off_y;
gimp_item_get_offset (GIMP_ITEM (tool->drawables->data), &off_x, &off_y);
#if 0
if (gimp_gradient_tool_is_shapeburst (gradient_tool))
{
gfloat start, end;
gegl_buffer_get (gradient_tool->dist_buffer,
GEGL_RECTANGLE (gradient_tool->start_x - off_x,
gradient_tool->start_y - off_y,
1, 1),
1.0, babl_format("Y float"), &start,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
gegl_buffer_get (gradient_tool->dist_buffer,
GEGL_RECTANGLE (gradient_tool->end_x - off_x,
gradient_tool->end_y - off_y,
1, 1),
1.0, babl_format("Y float"), &end,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
if (start != end)
{
gegl_node_set (gradient_tool->subtract_node,
"value", (gdouble) start,
NULL);
gegl_node_set (gradient_tool->divide_node,
"value", (gdouble) (end - start),
NULL);
}
}
else
#endif
{
GeglRectangle roi;
gdouble start_x, start_y;
gdouble end_x, end_y;
gimp_item_mask_intersect (GIMP_ITEM (tool->drawables->data),
&roi.x, &roi.y, &roi.width, &roi.height);
start_x = gradient_tool->start_x - off_x;
start_y = gradient_tool->start_y - off_y;
end_x = gradient_tool->end_x - off_x;
end_y = gradient_tool->end_y - off_y;
gimp_drawable_gradient_adjust_coords (tool->drawables->data,
options->gradient_type,
&roi,
&start_x, &start_y, &end_x, &end_y);
gegl_node_set (gradient_tool->render_node,
"start-x", start_x,
"start-y", start_y,
"end-x", end_x,
"end-y", end_y,
NULL);
}
}
static void
gimp_gradient_tool_fg_bg_changed (GimpGradientTool *gradient_tool)
{
if (! gradient_tool->filter || ! gradient_tool->gradient)
return;
if (gimp_gradient_has_fg_bg_segments (gradient_tool->gradient))
{
/* Set a property on the node. Otherwise it will cache and refuse to update */
gegl_node_set (gradient_tool->render_node,
"gradient", gradient_tool->gradient,
NULL);
/* Update the filter */
gimp_drawable_filter_apply (gradient_tool->filter, NULL);
gimp_gradient_tool_editor_fg_bg_changed (gradient_tool);
}
}
static void
gimp_gradient_tool_gradient_dirty (GimpGradientTool *gradient_tool)
{
if (! gradient_tool->filter)
return;
if (! gradient_tool->tentative_gradient)
{
/* Set a property on the node. Otherwise it will cache and refuse to update */
gegl_node_set (gradient_tool->render_node,
"gradient", gradient_tool->gradient,
NULL);
/* Update the filter */
gimp_drawable_filter_apply (gradient_tool->filter, NULL);
}
gimp_gradient_tool_editor_gradient_dirty (gradient_tool);
}
static void
gimp_gradient_tool_set_gradient (GimpGradientTool *gradient_tool,
GimpGradient *gradient)
{
if (gradient_tool->gradient)
g_signal_handlers_disconnect_by_func (gradient_tool->gradient,
G_CALLBACK (gimp_gradient_tool_gradient_dirty),
gradient_tool);
g_set_object (&gradient_tool->gradient, gradient);
if (gradient_tool->gradient)
{
g_signal_connect_swapped (gradient_tool->gradient, "dirty",
G_CALLBACK (gimp_gradient_tool_gradient_dirty),
gradient_tool);
if (gradient_tool->render_node)
gegl_node_set (gradient_tool->render_node,
"gradient", gradient_tool->gradient,
NULL);
}
gimp_gradient_tool_editor_gradient_changed (gradient_tool);
}
static gboolean
gimp_gradient_tool_is_shapeburst (GimpGradientTool *gradient_tool)
{
GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
return options->gradient_type >= GIMP_GRADIENT_SHAPEBURST_ANGULAR &&
options->gradient_type <= GIMP_GRADIENT_SHAPEBURST_DIMPLED;
}
/* image map stuff */
static void
gimp_gradient_tool_create_filter (GimpGradientTool *gradient_tool,
GimpDrawable *drawable)
{
GimpGradientOptions *options = GIMP_GRADIENT_TOOL_GET_OPTIONS (gradient_tool);
GimpContext *context = GIMP_CONTEXT (options);
if (! gradient_tool->graph)
gimp_gradient_tool_create_graph (gradient_tool);
gradient_tool->filter = gimp_drawable_filter_new (drawable,
C_("undo-type", "Gradient"),
gradient_tool->graph,
GIMP_ICON_TOOL_GRADIENT);
gimp_drawable_filter_set_temporary (gradient_tool->filter, TRUE);
gimp_drawable_filter_set_region (gradient_tool->filter,
GIMP_FILTER_REGION_DRAWABLE);
gimp_drawable_filter_set_opacity (gradient_tool->filter,
gimp_context_get_opacity (context));
gimp_drawable_filter_set_mode (gradient_tool->filter,
gimp_context_get_paint_mode (context),
GIMP_LAYER_COLOR_SPACE_AUTO,
GIMP_LAYER_COLOR_SPACE_AUTO,
gimp_layer_mode_get_paint_composite_mode (
gimp_context_get_paint_mode (context)));
g_signal_connect (gradient_tool->filter, "flush",
G_CALLBACK (gimp_gradient_tool_filter_flush),
gradient_tool);
}
static void
gimp_gradient_tool_filter_flush (GimpDrawableFilter *filter,
GimpTool *tool)
{
GimpImage *image = gimp_display_get_image (tool->display);
gimp_projection_flush (gimp_image_get_projection (image));
}
/* protected functions */
void
gimp_gradient_tool_set_tentative_gradient (GimpGradientTool *gradient_tool,
GimpGradient *gradient)
{
g_return_if_fail (GIMP_IS_GRADIENT_TOOL (gradient_tool));
g_return_if_fail (gradient == NULL || GIMP_IS_GRADIENT (gradient));
if (g_set_object (&gradient_tool->tentative_gradient, gradient))
{
if (gradient_tool->render_node)
{
gegl_node_set (gradient_tool->render_node,
"gradient", gradient ? gradient : gradient_tool->gradient,
NULL);
gimp_drawable_filter_apply (gradient_tool->filter, NULL);
}
}
}
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