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8cfdf13af0d80e514b61bd8bb7b51a5270b937a2
gimp/app/tools/gimpcagetool.c
Ell 637105b962 app: in all tools, blink lock box when the current item is locked 
In all tools, when the current item can't be edited due to its lock
mask, use gimp_tools_blink_lock_box(), added in the previous
commit,to blink the lock box of the corresponding dockable, in
addition to showing an error message in the status bar, to hint at
the source of the error.
2018-12-10 08:55:17 -05:00

1293 lines
42 KiB
C
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/* GIMP - The GNU Image Manipulation Program
*
* gimpcagetool.c
* Copyright (C) 2010 Michael Muré <batolettre@gmail.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 <string.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "gegl/gimp-gegl-utils.h"
#include "operations/gimpcageconfig.h"
#include "core/gimpdrawablefilter.h"
#include "core/gimperror.h"
#include "core/gimpimage.h"
#include "core/gimpitem.h"
#include "core/gimpprogress.h"
#include "core/gimpprojection.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimpwidgets-utils.h"
#include "display/gimpcanvasitem.h"
#include "display/gimpdisplay.h"
#include "gimpcagetool.h"
#include "gimpcageoptions.h"
#include "gimptoolcontrol.h"
#include "gimptools-utils.h"
#include "gimp-intl.h"
/* XXX: if this state list is updated, in particular if for some reason,
a new CAGE_STATE_* was to be inserted after CAGE_STATE_CLOSING, check
if the function gimp_cage_tool_is_complete() has to be updated.
Current algorithm is that all DEFORM_* states are complete states,
and all CAGE_* states are incomplete states. */
enum
{
CAGE_STATE_INIT,
CAGE_STATE_WAIT,
CAGE_STATE_MOVE_HANDLE,
CAGE_STATE_SELECTING,
CAGE_STATE_CLOSING,
DEFORM_STATE_WAIT,
DEFORM_STATE_MOVE_HANDLE,
DEFORM_STATE_SELECTING
};
static gboolean gimp_cage_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error);
static void gimp_cage_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display);
static void gimp_cage_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display);
static void gimp_cage_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display);
static void gimp_cage_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static gboolean gimp_cage_tool_key_press (GimpTool *tool,
GdkEventKey *kevent,
GimpDisplay *display);
static void gimp_cage_tool_cursor_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display);
static void gimp_cage_tool_oper_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display);
static void gimp_cage_tool_options_notify (GimpTool *tool,
GimpToolOptions *options,
const GParamSpec *pspec);
static void gimp_cage_tool_draw (GimpDrawTool *draw_tool);
static void gimp_cage_tool_start (GimpCageTool *ct,
GimpDisplay *display);
static void gimp_cage_tool_halt (GimpCageTool *ct);
static void gimp_cage_tool_commit (GimpCageTool *ct);
static gint gimp_cage_tool_is_on_handle (GimpCageTool *ct,
GimpDrawTool *draw_tool,
GimpDisplay *display,
gdouble x,
gdouble y,
gint handle_size);
static gint gimp_cage_tool_is_on_edge (GimpCageTool *ct,
gdouble x,
gdouble y,
gint handle_size);
static gboolean gimp_cage_tool_is_complete (GimpCageTool *ct);
static void gimp_cage_tool_remove_last_handle (GimpCageTool *ct);
static void gimp_cage_tool_compute_coef (GimpCageTool *ct);
static void gimp_cage_tool_create_filter (GimpCageTool *ct);
static void gimp_cage_tool_filter_flush (GimpDrawableFilter *filter,
GimpTool *tool);
static void gimp_cage_tool_filter_update (GimpCageTool *ct);
static void gimp_cage_tool_create_render_node (GimpCageTool *ct);
static void gimp_cage_tool_render_node_update (GimpCageTool *ct);
G_DEFINE_TYPE (GimpCageTool, gimp_cage_tool, GIMP_TYPE_DRAW_TOOL)
#define parent_class gimp_cage_tool_parent_class
void
gimp_cage_tool_register (GimpToolRegisterCallback callback,
gpointer data)
{
(* callback) (GIMP_TYPE_CAGE_TOOL,
GIMP_TYPE_CAGE_OPTIONS,
gimp_cage_options_gui,
0,
"gimp-cage-tool",
_("Cage Transform"),
_("Cage Transform: Deform a selection with a cage"),
N_("_Cage Transform"), "<shift>G",
NULL, GIMP_HELP_TOOL_CAGE,
GIMP_ICON_TOOL_CAGE,
data);
}
static void
gimp_cage_tool_class_init (GimpCageToolClass *klass)
{
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
GimpDrawToolClass *draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass);
tool_class->initialize = gimp_cage_tool_initialize;
tool_class->control = gimp_cage_tool_control;
tool_class->button_press = gimp_cage_tool_button_press;
tool_class->button_release = gimp_cage_tool_button_release;
tool_class->key_press = gimp_cage_tool_key_press;
tool_class->motion = gimp_cage_tool_motion;
tool_class->cursor_update = gimp_cage_tool_cursor_update;
tool_class->oper_update = gimp_cage_tool_oper_update;
tool_class->options_notify = gimp_cage_tool_options_notify;
draw_tool_class->draw = gimp_cage_tool_draw;
}
static void
gimp_cage_tool_init (GimpCageTool *self)
{
GimpTool *tool = GIMP_TOOL (self);
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_SELECTION |
GIMP_DIRTY_ACTIVE_DRAWABLE);
gimp_tool_control_set_wants_click (tool->control, TRUE);
gimp_tool_control_set_tool_cursor (tool->control,
GIMP_TOOL_CURSOR_PERSPECTIVE);
self->config = g_object_new (GIMP_TYPE_CAGE_CONFIG, NULL);
self->hovering_handle = -1;
self->tool_state = CAGE_STATE_INIT;
}
static gboolean
gimp_cage_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error)
{
GimpImage *image = gimp_display_get_image (display);
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
if (! drawable)
return FALSE;
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)))
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("The active layer's pixels are locked."));
if (error)
gimp_tools_blink_lock_box (display->gimp, GIMP_ITEM (drawable));
return FALSE;
}
if (! gimp_item_is_visible (GIMP_ITEM (drawable)))
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("The active layer is not visible."));
return FALSE;
}
gimp_cage_tool_start (GIMP_CAGE_TOOL (tool), display);
return TRUE;
}
static void
gimp_cage_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display)
{
GimpCageTool *ct = GIMP_CAGE_TOOL (tool);
switch (action)
{
case GIMP_TOOL_ACTION_PAUSE:
case GIMP_TOOL_ACTION_RESUME:
break;
case GIMP_TOOL_ACTION_HALT:
gimp_cage_tool_halt (ct);
break;
case GIMP_TOOL_ACTION_COMMIT:
gimp_cage_tool_commit (ct);
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, display);
}
static void
gimp_cage_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display)
{
GimpCageTool *ct = GIMP_CAGE_TOOL (tool);
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
gint handle = -1;
gint edge = -1;
gimp_tool_control_activate (tool->control);
if (ct->config)
{
handle = gimp_cage_tool_is_on_handle (ct,
draw_tool,
display,
coords->x,
coords->y,
GIMP_TOOL_HANDLE_SIZE_CIRCLE);
edge = gimp_cage_tool_is_on_edge (ct,
coords->x,
coords->y,
GIMP_TOOL_HANDLE_SIZE_CIRCLE);
}
ct->movement_start_x = coords->x;
ct->movement_start_y = coords->y;
switch (ct->tool_state)
{
case CAGE_STATE_INIT:
/* No handle yet, we add the first one and switch the tool to
* moving handle state.
*/
gimp_cage_config_add_cage_point (ct->config,
coords->x - ct->offset_x,
coords->y - ct->offset_y);
gimp_cage_config_select_point (ct->config, 0);
ct->tool_state = CAGE_STATE_MOVE_HANDLE;
break;
case CAGE_STATE_WAIT:
if (handle == -1 && edge <= 0)
{
/* User clicked on the background, we add a new handle
* and move it
*/
gimp_cage_config_add_cage_point (ct->config,
coords->x - ct->offset_x,
coords->y - ct->offset_y);
gimp_cage_config_select_point (ct->config,
gimp_cage_config_get_n_points (ct->config) - 1);
ct->tool_state = CAGE_STATE_MOVE_HANDLE;
}
else if (handle == 0 && gimp_cage_config_get_n_points (ct->config) > 2)
{
/* User clicked on the first handle, we wait for
* release for closing the cage and switching to
* deform if possible
*/
gimp_cage_config_select_point (ct->config, 0);
ct->tool_state = CAGE_STATE_CLOSING;
}
else if (handle >= 0)
{
/* User clicked on a handle, so we move it */
if (state & gimp_get_extend_selection_mask ())
{
/* Multiple selection */
gimp_cage_config_toggle_point_selection (ct->config, handle);
}
else
{
/* New selection */
if (! gimp_cage_config_point_is_selected (ct->config, handle))
{
gimp_cage_config_select_point (ct->config, handle);
}
}
ct->tool_state = CAGE_STATE_MOVE_HANDLE;
}
else if (edge > 0)
{
/* User clicked on an edge, we add a new handle here and select it */
gimp_cage_config_insert_cage_point (ct->config, edge,
coords->x, coords->y);
gimp_cage_config_select_point (ct->config, edge);
ct->tool_state = CAGE_STATE_MOVE_HANDLE;
}
break;
case DEFORM_STATE_WAIT:
if (handle == -1)
{
/* User clicked on the background, we start a rubber band
* selection
*/
ct->selection_start_x = coords->x;
ct->selection_start_y = coords->y;
ct->tool_state = DEFORM_STATE_SELECTING;
}
if (handle >= 0)
{
/* User clicked on a handle, so we move it */
if (state & gimp_get_extend_selection_mask ())
{
/* Multiple selection */
gimp_cage_config_toggle_point_selection (ct->config, handle);
}
else
{
/* New selection */
if (! gimp_cage_config_point_is_selected (ct->config, handle))
{
gimp_cage_config_select_point (ct->config, handle);
}
}
ct->tool_state = DEFORM_STATE_MOVE_HANDLE;
}
break;
}
}
void
gimp_cage_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display)
{
GimpCageTool *ct = GIMP_CAGE_TOOL (tool);
GimpCageOptions *options = GIMP_CAGE_TOOL_GET_OPTIONS (ct);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (ct));
gimp_tool_control_halt (tool->control);
if (release_type == GIMP_BUTTON_RELEASE_CANCEL)
{
/* Cancelling */
switch (ct->tool_state)
{
case CAGE_STATE_CLOSING:
ct->tool_state = CAGE_STATE_WAIT;
break;
case CAGE_STATE_MOVE_HANDLE:
gimp_cage_config_remove_last_cage_point (ct->config);
ct->tool_state = CAGE_STATE_WAIT;
break;
case CAGE_STATE_SELECTING:
ct->tool_state = CAGE_STATE_WAIT;
break;
case DEFORM_STATE_MOVE_HANDLE:
gimp_cage_tool_filter_update (ct);
ct->tool_state = DEFORM_STATE_WAIT;
break;
case DEFORM_STATE_SELECTING:
ct->tool_state = DEFORM_STATE_WAIT;
break;
}
gimp_cage_config_reset_displacement (ct->config);
}
else
{
/* Normal release */
switch (ct->tool_state)
{
case CAGE_STATE_CLOSING:
ct->dirty_coef = TRUE;
gimp_cage_config_commit_displacement (ct->config);
if (release_type == GIMP_BUTTON_RELEASE_CLICK)
g_object_set (options, "cage-mode", GIMP_CAGE_MODE_DEFORM, NULL);
break;
case CAGE_STATE_MOVE_HANDLE:
ct->dirty_coef = TRUE;
ct->tool_state = CAGE_STATE_WAIT;
gimp_cage_config_commit_displacement (ct->config);
break;
case CAGE_STATE_SELECTING:
{
GeglRectangle area =
{ MIN (ct->selection_start_x, coords->x) - ct->offset_x,
MIN (ct->selection_start_y, coords->y) - ct->offset_y,
ABS (ct->selection_start_x - coords->x),
ABS (ct->selection_start_y - coords->y) };
if (state & gimp_get_extend_selection_mask ())
{
gimp_cage_config_select_add_area (ct->config,
GIMP_CAGE_MODE_CAGE_CHANGE,
area);
}
else
{
gimp_cage_config_select_area (ct->config,
GIMP_CAGE_MODE_CAGE_CHANGE,
area);
}
ct->tool_state = CAGE_STATE_WAIT;
}
break;
case DEFORM_STATE_MOVE_HANDLE:
ct->tool_state = DEFORM_STATE_WAIT;
gimp_cage_config_commit_displacement (ct->config);
gegl_node_set (ct->cage_node,
"config", ct->config,
NULL);
gimp_cage_tool_filter_update (ct);
break;
case DEFORM_STATE_SELECTING:
{
GeglRectangle area =
{ MIN (ct->selection_start_x, coords->x) - ct->offset_x,
MIN (ct->selection_start_y, coords->y) - ct->offset_y,
ABS (ct->selection_start_x - coords->x),
ABS (ct->selection_start_y - coords->y) };
if (state & gimp_get_extend_selection_mask ())
{
gimp_cage_config_select_add_area (ct->config,
GIMP_CAGE_MODE_DEFORM, area);
}
else
{
gimp_cage_config_select_area (ct->config,
GIMP_CAGE_MODE_DEFORM, area);
}
ct->tool_state = DEFORM_STATE_WAIT;
}
break;
}
}
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_cage_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpCageTool *ct = GIMP_CAGE_TOOL (tool);
GimpCageOptions *options = GIMP_CAGE_TOOL_GET_OPTIONS (ct);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
ct->cursor_x = coords->x;
ct->cursor_y = coords->y;
switch (ct->tool_state)
{
case CAGE_STATE_MOVE_HANDLE:
case CAGE_STATE_CLOSING:
case DEFORM_STATE_MOVE_HANDLE:
gimp_cage_config_add_displacement (ct->config,
options->cage_mode,
ct->cursor_x - ct->movement_start_x,
ct->cursor_y - ct->movement_start_y);
break;
}
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static gboolean
gimp_cage_tool_key_press (GimpTool *tool,
GdkEventKey *kevent,
GimpDisplay *display)
{
GimpCageTool *ct = GIMP_CAGE_TOOL (tool);
if (! ct->config)
return FALSE;
switch (kevent->keyval)
{
case GDK_KEY_BackSpace:
if (ct->tool_state == CAGE_STATE_WAIT)
{
if (gimp_cage_config_get_n_points (ct->config) != 0)
gimp_cage_tool_remove_last_handle (ct);
}
else if (ct->tool_state == DEFORM_STATE_WAIT)
{
gimp_cage_config_remove_selected_points (ct->config);
/* if the cage have less than 3 handles, we reopen it */
if (gimp_cage_config_get_n_points (ct->config) <= 2)
{
ct->tool_state = CAGE_STATE_WAIT;
}
gimp_cage_tool_compute_coef (ct);
gimp_cage_tool_render_node_update (ct);
}
return TRUE;
case GDK_KEY_Return:
case GDK_KEY_KP_Enter:
case GDK_KEY_ISO_Enter:
if (! gimp_cage_tool_is_complete (ct) &&
gimp_cage_config_get_n_points (ct->config) > 2)
{
g_object_set (gimp_tool_get_options (tool),
"cage-mode", GIMP_CAGE_MODE_DEFORM,
NULL);
}
else if (ct->tool_state == DEFORM_STATE_WAIT)
{
gimp_tool_control (tool, GIMP_TOOL_ACTION_COMMIT, display);
}
return TRUE;
case GDK_KEY_Escape:
gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, display);
return TRUE;
default:
break;
}
return FALSE;
}
static void
gimp_cage_tool_oper_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display)
{
GimpCageTool *ct = GIMP_CAGE_TOOL (tool);
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
if (ct->config)
{
ct->hovering_handle = gimp_cage_tool_is_on_handle (ct,
draw_tool,
display,
coords->x,
coords->y,
GIMP_TOOL_HANDLE_SIZE_CIRCLE);
ct->hovering_edge = gimp_cage_tool_is_on_edge (ct,
coords->x,
coords->y,
GIMP_TOOL_HANDLE_SIZE_CIRCLE);
}
gimp_draw_tool_pause (draw_tool);
ct->cursor_x = coords->x;
ct->cursor_y = coords->y;
gimp_draw_tool_resume (draw_tool);
}
static void
gimp_cage_tool_cursor_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
GimpCageTool *ct = GIMP_CAGE_TOOL (tool);
GimpCageOptions *options = GIMP_CAGE_TOOL_GET_OPTIONS (ct);
GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_PLUS;
if (tool->display)
{
if (ct->hovering_handle != -1)
{
modifier = GIMP_CURSOR_MODIFIER_MOVE;
}
else if (ct->hovering_edge != -1 &&
options->cage_mode == GIMP_CAGE_MODE_CAGE_CHANGE)
{
modifier = GIMP_CURSOR_MODIFIER_PLUS;
}
else
{
if (gimp_cage_tool_is_complete (ct))
modifier = GIMP_CURSOR_MODIFIER_BAD;
}
}
else
{
GimpImage *image = gimp_display_get_image (display);
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
if (gimp_viewable_get_children (GIMP_VIEWABLE (drawable)) ||
gimp_item_is_content_locked (GIMP_ITEM (drawable)) ||
! gimp_item_is_visible (GIMP_ITEM (drawable)))
{
modifier = GIMP_CURSOR_MODIFIER_BAD;
}
}
gimp_tool_control_set_cursor_modifier (tool->control, modifier);
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static void
gimp_cage_tool_options_notify (GimpTool *tool,
GimpToolOptions *options,
const GParamSpec *pspec)
{
GimpCageTool *ct = GIMP_CAGE_TOOL (tool);
GIMP_TOOL_CLASS (parent_class)->options_notify (tool, options, pspec);
if (! tool->display)
return;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
if (strcmp (pspec->name, "cage-mode") == 0)
{
GimpCageMode mode;
g_object_get (options,
"cage-mode", &mode,
NULL);
if (mode == GIMP_CAGE_MODE_DEFORM)
{
/* switch to deform mode */
if (gimp_cage_config_get_n_points (ct->config) > 2)
{
gimp_cage_config_reset_displacement (ct->config);
gimp_cage_config_reverse_cage_if_needed (ct->config);
gimp_tool_push_status (tool, tool->display,
_("Press ENTER to commit the transform"));
ct->tool_state = DEFORM_STATE_WAIT;
if (! ct->render_node)
{
gimp_cage_tool_create_render_node (ct);
}
if (ct->dirty_coef)
{
gimp_cage_tool_compute_coef (ct);
gimp_cage_tool_render_node_update (ct);
}
if (! ct->filter)
gimp_cage_tool_create_filter (ct);
gimp_cage_tool_filter_update (ct);
}
else
{
g_object_set (options,
"cage-mode", GIMP_CAGE_MODE_CAGE_CHANGE,
NULL);
}
}
else
{
/* switch to edit mode */
if (ct->filter)
{
gimp_drawable_filter_abort (ct->filter);
gimp_tool_pop_status (tool, tool->display);
ct->tool_state = CAGE_STATE_WAIT;
}
}
}
else if (strcmp (pspec->name, "fill-plain-color") == 0)
{
if (ct->tool_state == DEFORM_STATE_WAIT)
{
gimp_cage_tool_render_node_update (ct);
gimp_cage_tool_filter_update (ct);
}
}
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_cage_tool_draw (GimpDrawTool *draw_tool)
{
GimpCageTool *ct = GIMP_CAGE_TOOL (draw_tool);
GimpCageOptions *options = GIMP_CAGE_TOOL_GET_OPTIONS (ct);
GimpCageConfig *config = ct->config;
GimpCanvasGroup *stroke_group;
gint n_vertices;
gint i;
GimpHandleType handle;
n_vertices = gimp_cage_config_get_n_points (config);
if (n_vertices == 0)
return;
if (ct->tool_state == CAGE_STATE_INIT)
return;
stroke_group = gimp_draw_tool_add_stroke_group (draw_tool);
gimp_draw_tool_push_group (draw_tool, stroke_group);
/* If needed, draw line to the cursor. */
if (! gimp_cage_tool_is_complete (ct))
{
GimpVector2 last_point;
last_point = gimp_cage_config_get_point_coordinate (ct->config,
options->cage_mode,
n_vertices - 1);
gimp_draw_tool_add_line (draw_tool,
last_point.x + ct->offset_x,
last_point.y + ct->offset_y,
ct->cursor_x,
ct->cursor_y);
}
gimp_draw_tool_pop_group (draw_tool);
/* Draw the cage with handles. */
for (i = 0; i < n_vertices; i++)
{
GimpCanvasItem *item;
GimpVector2 point1, point2;
point1 = gimp_cage_config_get_point_coordinate (ct->config,
options->cage_mode,
i);
point1.x += ct->offset_x;
point1.y += ct->offset_y;
if (i > 0 || gimp_cage_tool_is_complete (ct))
{
gint index_point2;
if (i == 0)
index_point2 = n_vertices - 1;
else
index_point2 = i - 1;
point2 = gimp_cage_config_get_point_coordinate (ct->config,
options->cage_mode,
index_point2);
point2.x += ct->offset_x;
point2.y += ct->offset_y;
if (i != ct->hovering_edge ||
gimp_cage_tool_is_complete (ct))
{
gimp_draw_tool_push_group (draw_tool, stroke_group);
}
item = gimp_draw_tool_add_line (draw_tool,
point1.x,
point1.y,
point2.x,
point2.y);
if (i == ct->hovering_edge &&
! gimp_cage_tool_is_complete (ct))
{
gimp_canvas_item_set_highlight (item, TRUE);
}
else
{
gimp_draw_tool_pop_group (draw_tool);
}
}
if (gimp_cage_config_point_is_selected (ct->config, i))
{
if (i == ct->hovering_handle)
handle = GIMP_HANDLE_FILLED_SQUARE;
else
handle = GIMP_HANDLE_SQUARE;
}
else
{
if (i == ct->hovering_handle)
handle = GIMP_HANDLE_FILLED_CIRCLE;
else
handle = GIMP_HANDLE_CIRCLE;
}
item = gimp_draw_tool_add_handle (draw_tool,
handle,
point1.x,
point1.y,
GIMP_TOOL_HANDLE_SIZE_CIRCLE,
GIMP_TOOL_HANDLE_SIZE_CIRCLE,
GIMP_HANDLE_ANCHOR_CENTER);
if (i == ct->hovering_handle)
gimp_canvas_item_set_highlight (item, TRUE);
}
if (ct->tool_state == DEFORM_STATE_SELECTING ||
ct->tool_state == CAGE_STATE_SELECTING)
{
gimp_draw_tool_add_rectangle (draw_tool,
FALSE,
MIN (ct->selection_start_x, ct->cursor_x),
MIN (ct->selection_start_y, ct->cursor_y),
ABS (ct->selection_start_x - ct->cursor_x),
ABS (ct->selection_start_y - ct->cursor_y));
}
}
static void
gimp_cage_tool_start (GimpCageTool *ct,
GimpDisplay *display)
{
GimpTool *tool = GIMP_TOOL (ct);
GimpImage *image = gimp_display_get_image (display);
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
tool->display = display;
tool->drawable = drawable;
g_clear_object (&ct->config);
g_clear_object (&ct->coef);
ct->dirty_coef = TRUE;
if (ct->filter)
{
gimp_drawable_filter_abort (ct->filter);
g_clear_object (&ct->filter);
}
if (ct->render_node)
{
g_clear_object (&ct->render_node);
ct->coef_node = NULL;
ct->cage_node = NULL;
}
ct->config = g_object_new (GIMP_TYPE_CAGE_CONFIG, NULL);
ct->hovering_handle = -1;
ct->hovering_edge = -1;
ct->tool_state = CAGE_STATE_INIT;
/* Setting up cage offset to convert the cage point coords to
* drawable coords
*/
gimp_item_get_offset (GIMP_ITEM (tool->drawable),
&ct->offset_x, &ct->offset_y);
gimp_draw_tool_start (GIMP_DRAW_TOOL (ct), display);
}
static void
gimp_cage_tool_halt (GimpCageTool *ct)
{
GimpTool *tool = GIMP_TOOL (ct);
g_clear_object (&ct->config);
g_clear_object (&ct->coef);
g_clear_object (&ct->render_node);
ct->coef_node = NULL;
ct->cage_node = NULL;
if (ct->filter)
{
gimp_tool_control_push_preserve (tool->control, TRUE);
gimp_drawable_filter_abort (ct->filter);
g_clear_object (&ct->filter);
gimp_tool_control_pop_preserve (tool->control);
gimp_image_flush (gimp_display_get_image (tool->display));
}
tool->display = NULL;
tool->drawable = NULL;
ct->tool_state = CAGE_STATE_INIT;
g_object_set (gimp_tool_get_options (tool),
"cage-mode", GIMP_CAGE_MODE_CAGE_CHANGE,
NULL);
}
static void
gimp_cage_tool_commit (GimpCageTool *ct)
{
if (ct->filter)
{
GimpTool *tool = GIMP_TOOL (ct);
gimp_tool_control_push_preserve (tool->control, TRUE);
gimp_drawable_filter_commit (ct->filter, GIMP_PROGRESS (tool), FALSE);
g_clear_object (&ct->filter);
gimp_tool_control_pop_preserve (tool->control);
gimp_image_flush (gimp_display_get_image (tool->display));
}
}
static gint
gimp_cage_tool_is_on_handle (GimpCageTool *ct,
GimpDrawTool *draw_tool,
GimpDisplay *display,
gdouble x,
gdouble y,
gint handle_size)
{
GimpCageOptions *options = GIMP_CAGE_TOOL_GET_OPTIONS (ct);
GimpCageConfig *config = ct->config;
gdouble dist = G_MAXDOUBLE;
gint i;
GimpVector2 cage_point;
guint n_cage_vertices;
g_return_val_if_fail (GIMP_IS_CAGE_TOOL (ct), -1);
n_cage_vertices = gimp_cage_config_get_n_points (config);
if (n_cage_vertices == 0)
return -1;
for (i = 0; i < n_cage_vertices; i++)
{
cage_point = gimp_cage_config_get_point_coordinate (config,
options->cage_mode,
i);
cage_point.x += ct->offset_x;
cage_point.y += ct->offset_y;
dist = gimp_draw_tool_calc_distance_square (GIMP_DRAW_TOOL (draw_tool),
display,
x, y,
cage_point.x,
cage_point.y);
if (dist <= SQR (handle_size / 2))
return i;
}
return -1;
}
static gint
gimp_cage_tool_is_on_edge (GimpCageTool *ct,
gdouble x,
gdouble y,
gint handle_size)
{
GimpCageOptions *options = GIMP_CAGE_TOOL_GET_OPTIONS (ct);
GimpCageConfig *config = ct->config;
gint i;
guint n_cage_vertices;
GimpVector2 A, B, C, AB, BC, AC;
gdouble lAB, lBC, lAC, lEB, lEC;
g_return_val_if_fail (GIMP_IS_CAGE_TOOL (ct), -1);
n_cage_vertices = gimp_cage_config_get_n_points (config);
if (n_cage_vertices < 2)
return -1;
A = gimp_cage_config_get_point_coordinate (config,
options->cage_mode,
n_cage_vertices-1);
B = gimp_cage_config_get_point_coordinate (config,
options->cage_mode,
0);
C.x = x;
C.y = y;
for (i = 0; i < n_cage_vertices; i++)
{
gimp_vector2_sub (&AB, &A, &B);
gimp_vector2_sub (&BC, &B, &C);
gimp_vector2_sub (&AC, &A, &C);
lAB = gimp_vector2_length (&AB);
lBC = gimp_vector2_length (&BC);
lAC = gimp_vector2_length (&AC);
lEB = lAB / 2 + (SQR (lBC) - SQR (lAC)) / (2 * lAB);
lEC = sqrt (SQR (lBC) - SQR (lEB));
if ((lEC < handle_size / 2) && (ABS (SQR (lBC) - SQR (lAC)) <= SQR (lAB)))
return i;
A = B;
B = gimp_cage_config_get_point_coordinate (config,
options->cage_mode,
(i+1) % n_cage_vertices);
}
return -1;
}
static gboolean
gimp_cage_tool_is_complete (GimpCageTool *ct)
{
return (ct->tool_state > CAGE_STATE_CLOSING);
}
static void
gimp_cage_tool_remove_last_handle (GimpCageTool *ct)
{
GimpCageConfig *config = ct->config;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (ct));
gimp_cage_config_remove_last_cage_point (config);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (ct));
}
static void
gimp_cage_tool_compute_coef (GimpCageTool *ct)
{
GimpCageConfig *config = ct->config;
GimpProgress *progress;
const Babl *format;
GeglNode *gegl;
GeglNode *input;
GeglNode *output;
GeglProcessor *processor;
GeglBuffer *buffer;
gdouble value;
progress = gimp_progress_start (GIMP_PROGRESS (ct), FALSE,
_("Computing Cage Coefficients"));
g_clear_object (&ct->coef);
format = babl_format_n (babl_type ("float"),
gimp_cage_config_get_n_points (config) * 2);
gegl = gegl_node_new ();
input = gegl_node_new_child (gegl,
"operation", "gimp:cage-coef-calc",
"config", ct->config,
NULL);
output = gegl_node_new_child (gegl,
"operation", "gegl:buffer-sink",
"buffer", &buffer,
"format", format,
NULL);
gegl_node_connect_to (input, "output",
output, "input");
processor = gegl_node_new_processor (output, NULL);
while (gegl_processor_work (processor, &value))
{
if (progress)
gimp_progress_set_value (progress, value);
}
if (progress)
gimp_progress_end (progress);
g_object_unref (processor);
ct->coef = buffer;
g_object_unref (gegl);
ct->dirty_coef = FALSE;
}
static void
gimp_cage_tool_create_render_node (GimpCageTool *ct)
{
GimpCageOptions *options = GIMP_CAGE_TOOL_GET_OPTIONS (ct);
GeglNode *render;
GeglNode *input;
GeglNode *output;
g_return_if_fail (ct->render_node == NULL);
/* render_node is not supposed to be recreated */
ct->render_node = gegl_node_new ();
input = gegl_node_get_input_proxy (ct->render_node, "input");
output = gegl_node_get_output_proxy (ct->render_node, "output");
ct->coef_node = gegl_node_new_child (ct->render_node,
"operation", "gegl:buffer-source",
"buffer", ct->coef,
NULL);
ct->cage_node = gegl_node_new_child (ct->render_node,
"operation", "gimp:cage-transform",
"config", ct->config,
"fill-plain-color", options->fill_plain_color,
NULL);
render = gegl_node_new_child (ct->render_node,
"operation", "gegl:map-absolute",
NULL);
gegl_node_connect_to (input, "output",
ct->cage_node, "input");
gegl_node_connect_to (ct->coef_node, "output",
ct->cage_node, "aux");
gegl_node_connect_to (input, "output",
render, "input");
gegl_node_connect_to (ct->cage_node, "output",
render, "aux");
gegl_node_connect_to (render, "output",
output, "input");
gimp_gegl_progress_connect (ct->cage_node, GIMP_PROGRESS (ct),
_("Cage Transform"));
}
static void
gimp_cage_tool_render_node_update (GimpCageTool *ct)
{
GimpCageOptions *options = GIMP_CAGE_TOOL_GET_OPTIONS (ct);
gboolean fill;
GeglBuffer *buffer;
gegl_node_get (ct->cage_node,
"fill-plain-color", &fill,
NULL);
if (fill != options->fill_plain_color)
{
gegl_node_set (ct->cage_node,
"fill-plain-color", options->fill_plain_color,
NULL);
}
gegl_node_get (ct->coef_node,
"buffer", &buffer,
NULL);
if (buffer != ct->coef)
{
gegl_node_set (ct->coef_node,
"buffer", ct->coef,
NULL);
}
if (buffer)
g_object_unref (buffer);
}
static void
gimp_cage_tool_create_filter (GimpCageTool *ct)
{
if (! ct->render_node)
gimp_cage_tool_create_render_node (ct);
ct->filter = gimp_drawable_filter_new (GIMP_TOOL (ct)->drawable,
_("Cage transform"),
ct->render_node,
GIMP_ICON_TOOL_CAGE);
gimp_drawable_filter_set_region (ct->filter, GIMP_FILTER_REGION_DRAWABLE);
g_signal_connect (ct->filter, "flush",
G_CALLBACK (gimp_cage_tool_filter_flush),
ct);
}
static void
gimp_cage_tool_filter_flush (GimpDrawableFilter *filter,
GimpTool *tool)
{
GimpImage *image = gimp_display_get_image (tool->display);
gimp_projection_flush (gimp_image_get_projection (image));
}
static void
gimp_cage_tool_filter_update (GimpCageTool *ct)
{
gimp_drawable_filter_apply (ct->filter, NULL);
}
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