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gimp/app/tools/gimpeditselectiontool.c

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/* 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 <stdlib.h>
#include <stdarg.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimp.h"
#include "core/gimp-utils.h"
#include "core/gimpboundary.h"
#include "core/gimpgrouplayer.h"
#include "core/gimpimage.h"
#include "core/gimpimage-guides.h"
#include "core/gimpimage-item-list.h"
#include "core/gimpimage-undo.h"
#include "core/gimpitem-linked.h"
#include "core/gimplayer.h"
#include "core/gimplayermask.h"
#include "core/gimpprojection.h"
#include "core/gimpselection.h"
#include "core/gimpundostack.h"
#include "widgets/gimpwidgets-utils.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpdisplayshell-appearance.h"
#include "display/gimpdisplayshell-selection.h"
#include "display/gimpdisplayshell-transform.h"
#include "gimpdrawtool.h"
#include "gimpeditselectiontool.h"
#include "gimptoolcontrol.h"
#include "gimptools-utils.h"
#include "tool_manager.h"
#include "gimp-intl.h"
#define ARROW_VELOCITY 25
typedef struct _GimpEditSelectionTool GimpEditSelectionTool;
typedef struct _GimpEditSelectionToolClass GimpEditSelectionToolClass;
struct _GimpEditSelectionTool
{
GimpDrawTool parent_instance;
gdouble start_x; /* Coords where button was pressed */
gdouble start_y;
gint last_x; /* Last x and y coords */
gint last_y;
gint current_x; /* Current x and y coords */
gint current_y;
gint cuml_x; /* Cumulative changes to x and y */
gint cuml_y;
gint sel_x; /* Bounding box of selection mask */
gint sel_y; /* Bounding box of selection mask */
gint sel_width;
gint sel_height;
gint num_segs_in; /* Num seg in selection boundary */
gint num_segs_out; /* Num seg in selection boundary */
GimpBoundSeg *segs_in; /* Pointer to the channel sel. segs */
GimpBoundSeg *segs_out; /* Pointer to the channel sel. segs */
gdouble center_x; /* Where to draw the mark of center */
gdouble center_y;
GimpTranslateMode edit_mode; /* Translate the mask or layer? */
GList *live_items; /* Items that are transformed live */
GList *delayed_items; /* Items that are transformed later */
gboolean first_move; /* Don't push undos after the first */
gboolean propagate_release;
gboolean constrain; /* Constrain the movement */
gdouble last_motion_x; /* Previous coords sent to _motion */
gdouble last_motion_y;
};
struct _GimpEditSelectionToolClass
{
GimpDrawToolClass parent_class;
};
static void gimp_edit_selection_tool_finalize (GObject *object);
static void gimp_edit_selection_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display);
static void gimp_edit_selection_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static void gimp_edit_selection_tool_active_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display);
static void gimp_edit_selection_tool_draw (GimpDrawTool *tool);
static GimpItem * gimp_edit_selection_tool_get_active_item (GimpEditSelectionTool *edit_select,
GimpImage *image);
static void gimp_edit_selection_tool_calc_coords (GimpEditSelectionTool *edit_select,
GimpImage *image,
gdouble x,
gdouble y);
static void gimp_edit_selection_tool_start_undo_group (GimpEditSelectionTool *edit_select,
GimpImage *image);
G_DEFINE_TYPE (GimpEditSelectionTool, gimp_edit_selection_tool,
GIMP_TYPE_DRAW_TOOL)
#define parent_class gimp_edit_selection_tool_parent_class
static void
gimp_edit_selection_tool_class_init (GimpEditSelectionToolClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
GimpDrawToolClass *draw_class = GIMP_DRAW_TOOL_CLASS (klass);
object_class->finalize = gimp_edit_selection_tool_finalize;
tool_class->button_release = gimp_edit_selection_tool_button_release;
tool_class->motion = gimp_edit_selection_tool_motion;
tool_class->active_modifier_key = gimp_edit_selection_tool_active_modifier_key;
draw_class->draw = gimp_edit_selection_tool_draw;
}
static void
gimp_edit_selection_tool_init (GimpEditSelectionTool *edit_select)
{
GimpTool *tool = GIMP_TOOL (edit_select);
edit_select->first_move = TRUE;
gimp_tool_control_set_active_modifiers (tool->control,
GIMP_TOOL_ACTIVE_MODIFIERS_SEPARATE);
}
static void
gimp_edit_selection_tool_finalize (GObject *object)
{
GimpEditSelectionTool *edit_select = GIMP_EDIT_SELECTION_TOOL (object);
g_clear_pointer (&edit_select->segs_in, g_free);
edit_select->num_segs_in = 0;
g_clear_pointer (&edit_select->segs_out, g_free);
edit_select->num_segs_out = 0;
g_clear_pointer (&edit_select->live_items, g_list_free);
g_clear_pointer (&edit_select->delayed_items, g_list_free);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
void
gimp_edit_selection_tool_start (GimpTool *parent_tool,
GimpDisplay *display,
const GimpCoords *coords,
GimpTranslateMode edit_mode,
gboolean propagate_release)
{
GimpEditSelectionTool *edit_select;
GimpTool *tool;
GimpDisplayShell *shell;
GimpImage *image;
GimpItem *active_item;
GList *list;
gint off_x, off_y;
edit_select = g_object_new (GIMP_TYPE_EDIT_SELECTION_TOOL,
"tool-info", parent_tool->tool_info,
NULL);
edit_select->propagate_release = propagate_release;
tool = GIMP_TOOL (edit_select);
shell = gimp_display_get_shell (display);
image = gimp_display_get_image (display);
/* Make a check to see if it should be a floating selection translation */
if ((edit_mode == GIMP_TRANSLATE_MODE_MASK_TO_LAYER ||
edit_mode == GIMP_TRANSLATE_MODE_MASK_COPY_TO_LAYER) &&
gimp_image_get_floating_selection (image))
{
edit_mode = GIMP_TRANSLATE_MODE_FLOATING_SEL;
}
if (edit_mode == GIMP_TRANSLATE_MODE_LAYER)
{
GimpLayer *layer = gimp_image_get_active_layer (image);
if (gimp_layer_is_floating_sel (layer))
edit_mode = GIMP_TRANSLATE_MODE_FLOATING_SEL;
}
edit_select->edit_mode = edit_mode;
gimp_edit_selection_tool_start_undo_group (edit_select, image);
/* Remember starting point for use in constrained movement */
edit_select->start_x = coords->x;
edit_select->start_y = coords->y;
active_item = gimp_edit_selection_tool_get_active_item (edit_select, image);
gimp_item_get_offset (active_item, &off_x, &off_y);
/* Manually set the last coords to the starting point */
edit_select->last_x = coords->x - off_x;
edit_select->last_y = coords->y - off_y;
edit_select->constrain = FALSE;
/* Find the active item's selection bounds */
{
GimpChannel *channel;
const GimpBoundSeg *segs_in;
const GimpBoundSeg *segs_out;
if (GIMP_IS_CHANNEL (active_item))
channel = GIMP_CHANNEL (active_item);
else
channel = gimp_image_get_mask (image);
gimp_channel_boundary (channel,
&segs_in, &segs_out,
&edit_select->num_segs_in,
&edit_select->num_segs_out,
0, 0, 0, 0);
edit_select->segs_in = g_memdup (segs_in,
edit_select->num_segs_in *
sizeof (GimpBoundSeg));
edit_select->segs_out = g_memdup (segs_out,
edit_select->num_segs_out *
sizeof (GimpBoundSeg));
if (edit_select->edit_mode == GIMP_TRANSLATE_MODE_VECTORS)
{
edit_select->sel_x = 0;
edit_select->sel_y = 0;
edit_select->sel_width = gimp_image_get_width (image);
edit_select->sel_height = gimp_image_get_height (image);
}
else
{
/* find the bounding box of the selection mask - this is used
* for the case of a GIMP_TRANSLATE_MODE_MASK_TO_LAYER, where
* the translation will result in floating the selection mask
* and translating the resulting layer
*/
gimp_item_mask_intersect (active_item,
&edit_select->sel_x,
&edit_select->sel_y,
&edit_select->sel_width,
&edit_select->sel_height);
}
}
gimp_edit_selection_tool_calc_coords (edit_select, image,
coords->x, coords->y);
{
gint x, y, w, h;
switch (edit_select->edit_mode)
{
case GIMP_TRANSLATE_MODE_CHANNEL:
case GIMP_TRANSLATE_MODE_MASK:
case GIMP_TRANSLATE_MODE_LAYER_MASK:
gimp_item_bounds (active_item, &x, &y, &w, &h);
x += off_x;
y += off_y;
break;
case GIMP_TRANSLATE_MODE_MASK_TO_LAYER:
case GIMP_TRANSLATE_MODE_MASK_COPY_TO_LAYER:
x = edit_select->sel_x + off_x;
y = edit_select->sel_y + off_y;
w = edit_select->sel_width;
h = edit_select->sel_height;
break;
case GIMP_TRANSLATE_MODE_LAYER:
case GIMP_TRANSLATE_MODE_FLOATING_SEL:
case GIMP_TRANSLATE_MODE_VECTORS:
if (gimp_item_get_linked (active_item))
{
GList *linked;
linked = gimp_image_item_list_get_list (image,
GIMP_IS_LAYER (active_item) ?
GIMP_ITEM_TYPE_LAYERS :
GIMP_ITEM_TYPE_VECTORS,
GIMP_ITEM_SET_LINKED);
linked = gimp_image_item_list_filter (linked);
gimp_image_item_list_bounds (image, linked, &x, &y, &w, &h);
g_list_free (linked);
}
else
{
gimp_item_bounds (active_item, &x, &y, &w, &h);
x += off_x;
y += off_y;
}
break;
}
gimp_tool_control_set_snap_offsets (tool->control,
x - coords->x,
y - coords->y,
w, h);
/* Save where to draw the mark of the center */
edit_select->center_x = x + w / 2.0;
edit_select->center_y = y + h / 2.0;
}
if (gimp_item_get_linked (active_item))
{
switch (edit_select->edit_mode)
{
case GIMP_TRANSLATE_MODE_CHANNEL:
case GIMP_TRANSLATE_MODE_LAYER:
case GIMP_TRANSLATE_MODE_VECTORS:
edit_select->live_items =
gimp_image_item_list_get_list (image,
GIMP_ITEM_TYPE_LAYERS |
GIMP_ITEM_TYPE_VECTORS,
GIMP_ITEM_SET_LINKED);
edit_select->live_items =
gimp_image_item_list_filter (edit_select->live_items);
edit_select->delayed_items =
gimp_image_item_list_get_list (image,
GIMP_ITEM_TYPE_CHANNELS,
GIMP_ITEM_SET_LINKED);
edit_select->delayed_items =
gimp_image_item_list_filter (edit_select->delayed_items);
break;
default:
/* other stuff can't be linked so don't bother */
break;
}
}
else
{
switch (edit_select->edit_mode)
{
case GIMP_TRANSLATE_MODE_VECTORS:
case GIMP_TRANSLATE_MODE_LAYER:
case GIMP_TRANSLATE_MODE_FLOATING_SEL:
edit_select->live_items = g_list_append (NULL, active_item);
break;
case GIMP_TRANSLATE_MODE_CHANNEL:
case GIMP_TRANSLATE_MODE_LAYER_MASK:
case GIMP_TRANSLATE_MODE_MASK:
edit_select->delayed_items = g_list_append (NULL, active_item);
break;
default:
/* MASK_TO_LAYER and MASK_COPY_TO_LAYER create a live_item later */
break;
}
}
for (list = edit_select->live_items; list; list = g_list_next (list))
{
GimpItem *item = list->data;
gimp_viewable_preview_freeze (GIMP_VIEWABLE (item));
gimp_item_start_transform (item, TRUE);
}
tool_manager_push_tool (display->gimp, tool);
gimp_tool_control_activate (tool->control);
tool->display = display;
/* pause the current selection */
gimp_display_shell_selection_pause (shell);
/* initialize the statusbar display */
gimp_tool_push_status_coords (tool, display,
gimp_tool_control_get_precision (tool->control),
_("Move: "), 0, ", ", 0, NULL);
gimp_draw_tool_start (GIMP_DRAW_TOOL (edit_select), display);
}
static void
gimp_edit_selection_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display)
{
GimpEditSelectionTool *edit_select = GIMP_EDIT_SELECTION_TOOL (tool);
GimpDisplayShell *shell = gimp_display_get_shell (display);
GimpImage *image = gimp_display_get_image (display);
GList *list;
/* resume the current selection */
gimp_display_shell_selection_resume (shell);
gimp_tool_pop_status (tool, display);
gimp_tool_control_halt (tool->control);
/* Stop and free the selection core */
gimp_draw_tool_stop (GIMP_DRAW_TOOL (edit_select));
tool_manager_pop_tool (display->gimp);
/* move the items -- whether there has been movement or not!
* (to ensure that there's something on the undo stack)
*/
gimp_image_item_list_translate (image,
edit_select->delayed_items,
edit_select->cuml_x,
edit_select->cuml_y,
TRUE);
for (list = edit_select->live_items; list; list = g_list_next (list))
{
GimpItem *item = list->data;
gimp_item_end_transform (item, TRUE);
gimp_viewable_preview_thaw (GIMP_VIEWABLE (item));
}
gimp_image_undo_group_end (image);
if (release_type == GIMP_BUTTON_RELEASE_CANCEL)
{
/* Operation cancelled - undo the undo-group! */
gimp_image_undo (image);
}
gimp_image_flush (image);
if (edit_select->propagate_release &&
tool_manager_get_active (display->gimp))
{
tool_manager_button_release_active (display->gimp,
coords, time, state,
display);
}
g_object_unref (edit_select);
}
static void
gimp_edit_selection_tool_update_motion (GimpEditSelectionTool *edit_select,
gdouble new_x,
gdouble new_y,
GimpDisplay *display)
{
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (edit_select);
GimpTool *tool = GIMP_TOOL (edit_select);
GimpImage *image = gimp_display_get_image (display);
gint dx;
gint dy;
gdk_flush ();
gimp_draw_tool_pause (draw_tool);
if (edit_select->constrain)
{
gimp_constrain_line (edit_select->start_x, edit_select->start_y,
&new_x, &new_y,
GIMP_CONSTRAIN_LINE_45_DEGREES, 0.0, 1.0, 1.0);
}
gimp_edit_selection_tool_calc_coords (edit_select, image,
new_x, new_y);
dx = edit_select->current_x - edit_select->last_x;
dy = edit_select->current_y - edit_select->last_y;
/* if there has been movement, move */
if (dx != 0 || dy != 0)
{
GimpItem *active_item;
GError *error = NULL;
active_item = gimp_edit_selection_tool_get_active_item (edit_select,
image);
edit_select->cuml_x += dx;
edit_select->cuml_y += dy;
switch (edit_select->edit_mode)
{
case GIMP_TRANSLATE_MODE_LAYER_MASK:
case GIMP_TRANSLATE_MODE_MASK:
case GIMP_TRANSLATE_MODE_VECTORS:
case GIMP_TRANSLATE_MODE_CHANNEL:
edit_select->last_x = edit_select->current_x;
edit_select->last_y = edit_select->current_y;
/* fallthru */
case GIMP_TRANSLATE_MODE_LAYER:
gimp_image_item_list_translate (image,
edit_select->live_items,
dx, dy,
edit_select->first_move);
break;
case GIMP_TRANSLATE_MODE_MASK_TO_LAYER:
case GIMP_TRANSLATE_MODE_MASK_COPY_TO_LAYER:
if (! gimp_selection_float (GIMP_SELECTION (gimp_image_get_mask (image)),
GIMP_DRAWABLE (active_item),
gimp_get_user_context (display->gimp),
edit_select->edit_mode ==
GIMP_TRANSLATE_MODE_MASK_TO_LAYER,
0, 0, &error))
{
/* no region to float, abort safely */
gimp_message_literal (display->gimp, G_OBJECT (display),
GIMP_MESSAGE_WARNING,
error->message);
g_clear_error (&error);
gimp_draw_tool_resume (draw_tool);
return;
}
edit_select->last_x -= edit_select->sel_x;
edit_select->last_y -= edit_select->sel_y;
edit_select->sel_x = 0;
edit_select->sel_y = 0;
edit_select->edit_mode = GIMP_TRANSLATE_MODE_FLOATING_SEL;
active_item = gimp_edit_selection_tool_get_active_item (edit_select,
image);
edit_select->live_items = g_list_prepend (NULL, active_item);
gimp_viewable_preview_freeze (GIMP_VIEWABLE (active_item));
gimp_item_start_transform (active_item, TRUE);
/* fallthru */
case GIMP_TRANSLATE_MODE_FLOATING_SEL:
gimp_image_item_list_translate (image,
edit_select->live_items,
dx, dy,
edit_select->first_move);
break;
}
edit_select->first_move = FALSE;
}
gimp_projection_flush (gimp_image_get_projection (image));
gimp_tool_pop_status (tool, display);
gimp_tool_push_status_coords (tool, display,
gimp_tool_control_get_precision (tool->control),
_("Move: "),
edit_select->cuml_x,
", ",
edit_select->cuml_y,
NULL);
gimp_draw_tool_resume (draw_tool);
}
static void
gimp_edit_selection_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpEditSelectionTool *edit_select = GIMP_EDIT_SELECTION_TOOL (tool);
edit_select->last_motion_x = coords->x;
edit_select->last_motion_y = coords->y;
gimp_edit_selection_tool_update_motion (edit_select,
coords->x, coords->y,
display);
}
static void
gimp_edit_selection_tool_active_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display)
{
GimpEditSelectionTool *edit_select = GIMP_EDIT_SELECTION_TOOL (tool);
edit_select->constrain = (state & gimp_get_constrain_behavior_mask () ?
TRUE : FALSE);
/* If we didn't came here due to a mouse release, immediately update
* the position of the thing we move.
*/
if (state & GDK_BUTTON1_MASK)
{
gimp_edit_selection_tool_update_motion (edit_select,
edit_select->last_motion_x,
edit_select->last_motion_y,
display);
}
}
static void
gimp_edit_selection_tool_draw (GimpDrawTool *draw_tool)
{
GimpEditSelectionTool *edit_select = GIMP_EDIT_SELECTION_TOOL (draw_tool);
GimpDisplay *display = GIMP_TOOL (draw_tool)->display;
GimpImage *image = gimp_display_get_image (display);
GimpItem *active_item;
gint off_x;
gint off_y;
active_item = gimp_edit_selection_tool_get_active_item (edit_select, image);
gimp_item_get_offset (active_item, &off_x, &off_y);
switch (edit_select->edit_mode)
{
case GIMP_TRANSLATE_MODE_CHANNEL:
case GIMP_TRANSLATE_MODE_LAYER_MASK:
case GIMP_TRANSLATE_MODE_MASK:
{
gboolean floating_sel = FALSE;
if (edit_select->edit_mode == GIMP_TRANSLATE_MODE_MASK)
{
GimpLayer *layer = gimp_image_get_active_layer (image);
if (layer)
floating_sel = gimp_layer_is_floating_sel (layer);
}
if (! floating_sel && edit_select->segs_in)
{
gimp_draw_tool_add_boundary (draw_tool,
edit_select->segs_in,
edit_select->num_segs_in,
NULL,
edit_select->cuml_x + off_x,
edit_select->cuml_y + off_y);
}
if (edit_select->segs_out)
{
gimp_draw_tool_add_boundary (draw_tool,
edit_select->segs_out,
edit_select->num_segs_out,
NULL,
edit_select->cuml_x + off_x,
edit_select->cuml_y + off_y);
}
else if (edit_select->edit_mode != GIMP_TRANSLATE_MODE_MASK)
{
gimp_draw_tool_add_rectangle (draw_tool,
FALSE,
edit_select->cuml_x + off_x,
edit_select->cuml_y + off_y,
gimp_item_get_width (active_item),
gimp_item_get_height (active_item));
}
}
break;
case GIMP_TRANSLATE_MODE_MASK_TO_LAYER:
case GIMP_TRANSLATE_MODE_MASK_COPY_TO_LAYER:
gimp_draw_tool_add_rectangle (draw_tool,
FALSE,
edit_select->sel_x + off_x,
edit_select->sel_y + off_y,
edit_select->sel_width,
edit_select->sel_height);
break;
case GIMP_TRANSLATE_MODE_LAYER:
case GIMP_TRANSLATE_MODE_VECTORS:
{
gint x, y, w, h;
if (gimp_item_get_linked (active_item))
{
GList *linked;
linked = gimp_image_item_list_get_list (image,
GIMP_IS_LAYER (active_item) ?
GIMP_ITEM_TYPE_LAYERS :
GIMP_ITEM_TYPE_VECTORS,
GIMP_ITEM_SET_LINKED);
linked = gimp_image_item_list_filter (linked);
gimp_image_item_list_bounds (image, linked, &x, &y, &w, &h);
g_list_free (linked);
}
else
{
gimp_item_bounds (active_item, &x, &y, &w, &h);
x += off_x;
y += off_y;
}
gimp_draw_tool_add_rectangle (draw_tool, FALSE,
x, y, w, h);
}
break;
case GIMP_TRANSLATE_MODE_FLOATING_SEL:
if (edit_select->segs_in)
{
gimp_draw_tool_add_boundary (draw_tool,
edit_select->segs_in,
edit_select->num_segs_in,
NULL,
edit_select->cuml_x,
edit_select->cuml_y);
}
break;
}
/* Mark the center because we snap to it */
gimp_draw_tool_add_handle (draw_tool,
GIMP_HANDLE_CROSS,
edit_select->center_x + edit_select->cuml_x,
edit_select->center_y + edit_select->cuml_y,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_TOOL_HANDLE_SIZE_SMALL,
GIMP_HANDLE_ANCHOR_CENTER);
GIMP_DRAW_TOOL_CLASS (parent_class)->draw (draw_tool);
}
static GimpItem *
gimp_edit_selection_tool_get_active_item (GimpEditSelectionTool *edit_select,
GimpImage *image)
{
GimpItem *active_item;
switch (edit_select->edit_mode)
{
case GIMP_TRANSLATE_MODE_VECTORS:
active_item = GIMP_ITEM (gimp_image_get_active_vectors (image));
break;
case GIMP_TRANSLATE_MODE_LAYER:
active_item = GIMP_ITEM (gimp_image_get_active_layer (image));
break;
case GIMP_TRANSLATE_MODE_MASK:
active_item = GIMP_ITEM (gimp_image_get_mask (image));
break;
default:
active_item = GIMP_ITEM (gimp_image_get_active_drawable (image));
break;
}
return active_item;
}
static void
gimp_edit_selection_tool_calc_coords (GimpEditSelectionTool *edit_select,
GimpImage *image,
gdouble x,
gdouble y)
{
GimpItem *active_item;
gint off_x, off_y;
gdouble x1, y1;
gdouble dx, dy;
active_item = gimp_edit_selection_tool_get_active_item (edit_select, image);
gimp_item_get_offset (active_item, &off_x, &off_y);
dx = (x - off_x) - edit_select->last_x;
dy = (y - off_y) - edit_select->last_y;
x1 = edit_select->sel_x + dx;
y1 = edit_select->sel_y + dy;
edit_select->current_x = ((gint) floor (x1) -
(edit_select->sel_x - edit_select->last_x));
edit_select->current_y = ((gint) floor (y1) -
(edit_select->sel_y - edit_select->last_y));
}
static void
gimp_edit_selection_tool_start_undo_group (GimpEditSelectionTool *edit_select,
GimpImage *image)
{
GimpItem *active_item;
const gchar *undo_desc = NULL;
active_item = gimp_edit_selection_tool_get_active_item (edit_select, image);
switch (edit_select->edit_mode)
{
case GIMP_TRANSLATE_MODE_VECTORS:
case GIMP_TRANSLATE_MODE_CHANNEL:
case GIMP_TRANSLATE_MODE_LAYER_MASK:
case GIMP_TRANSLATE_MODE_MASK:
case GIMP_TRANSLATE_MODE_LAYER:
undo_desc = GIMP_ITEM_GET_CLASS (active_item)->translate_desc;
break;
case GIMP_TRANSLATE_MODE_MASK_TO_LAYER:
case GIMP_TRANSLATE_MODE_MASK_COPY_TO_LAYER:
case GIMP_TRANSLATE_MODE_FLOATING_SEL:
undo_desc = _("Move Floating Selection");
break;
default:
g_return_if_reached ();
}
gimp_image_undo_group_start (image,
edit_select->edit_mode ==
GIMP_TRANSLATE_MODE_MASK ?
GIMP_UNDO_GROUP_MASK :
GIMP_UNDO_GROUP_ITEM_DISPLACE,
undo_desc);
}
static gint
process_event_queue_keys (GdkEventKey *kevent,
... /* GdkKeyType, GdkModifierType, value ... 0 */)
{
#define FILTER_MAX_KEYS 50
va_list argp;
GdkEvent *event;
GList *event_list = NULL;
GList *list;
guint keys[FILTER_MAX_KEYS];
GdkModifierType modifiers[FILTER_MAX_KEYS];
gint values[FILTER_MAX_KEYS];
gint i = 0;
gint n_keys = 0;
gint value = 0;
gboolean done = FALSE;
GtkWidget *orig_widget;
va_start (argp, kevent);
while (n_keys < FILTER_MAX_KEYS &&
(keys[n_keys] = va_arg (argp, guint)) != 0)
{
modifiers[n_keys] = va_arg (argp, GdkModifierType);
values[n_keys] = va_arg (argp, gint);
n_keys++;
}
va_end (argp);
for (i = 0; i < n_keys; i++)
if (kevent->keyval == keys[i] &&
(kevent->state & modifiers[i]) == modifiers[i])
value += values[i];
orig_widget = gtk_get_event_widget ((GdkEvent *) kevent);
while (gdk_events_pending () > 0 && ! done)
{
gboolean discard_event = FALSE;
event = gdk_event_get ();
if (! event || orig_widget != gtk_get_event_widget (event))
{
done = TRUE;
}
else
{
if (event->any.type == GDK_KEY_PRESS)
{
for (i = 0; i < n_keys; i++)
if (event->key.keyval == keys[i] &&
(event->key.state & modifiers[i]) == modifiers[i])
{
discard_event = TRUE;
value += values[i];
}
if (! discard_event)
done = TRUE;
}
/* should there be more types here? */
else if (event->any.type != GDK_KEY_RELEASE &&
event->any.type != GDK_MOTION_NOTIFY &&
event->any.type != GDK_EXPOSE)
done = FALSE;
}
if (! event)
; /* Do nothing */
else if (! discard_event)
event_list = g_list_prepend (event_list, event);
else
gdk_event_free (event);
}
event_list = g_list_reverse (event_list);
/* unget the unused events and free the list */
for (list = event_list; list; list = g_list_next (list))
{
gdk_event_put ((GdkEvent *) list->data);
gdk_event_free ((GdkEvent *) list->data);
}
g_list_free (event_list);
return value;
#undef FILTER_MAX_KEYS
}
gboolean
gimp_edit_selection_tool_key_press (GimpTool *tool,
GdkEventKey *kevent,
GimpDisplay *display)
{
GimpTransformType translate_type;
if (kevent->state & GDK_MOD1_MASK)
{
translate_type = GIMP_TRANSFORM_TYPE_SELECTION;
}
else if (kevent->state & gimp_get_toggle_behavior_mask ())
{
translate_type = GIMP_TRANSFORM_TYPE_PATH;
}
else
{
translate_type = GIMP_TRANSFORM_TYPE_LAYER;
}
return gimp_edit_selection_tool_translate (tool, kevent, translate_type,
display, NULL);
}
gboolean
gimp_edit_selection_tool_translate (GimpTool *tool,
GdkEventKey *kevent,
GimpTransformType translate_type,
GimpDisplay *display,
GtkWidget *type_box)
{
gint inc_x = 0;
gint inc_y = 0;
GimpUndo *undo;
gboolean push_undo = TRUE;
GimpImage *image = gimp_display_get_image (display);
GimpItem *item = NULL;
GimpTranslateMode edit_mode = GIMP_TRANSLATE_MODE_MASK;
GimpUndoType undo_type = GIMP_UNDO_GROUP_MASK;
const gchar *undo_desc = NULL;
GdkModifierType extend_mask = gimp_get_extend_selection_mask ();
const gchar *null_message = NULL;
const gchar *locked_message = NULL;
gint velocity;
/* bail out early if it is not an arrow key event */
if (kevent->keyval != GDK_KEY_Left &&
kevent->keyval != GDK_KEY_Right &&
kevent->keyval != GDK_KEY_Up &&
kevent->keyval != GDK_KEY_Down)
return FALSE;
/* adapt arrow velocity to the zoom factor when holding <shift> */
velocity = (ARROW_VELOCITY /
gimp_zoom_model_get_factor (gimp_display_get_shell (display)->zoom));
velocity = MAX (1.0, velocity);
/* check the event queue for key events with the same modifier mask
* as the current event, allowing only extend_mask to vary between
* them.
*/
inc_x = process_event_queue_keys (kevent,
GDK_KEY_Left,
kevent->state | extend_mask,
-1 * velocity,
GDK_KEY_Left,
kevent->state & ~extend_mask,
-1,
GDK_KEY_Right,
kevent->state | extend_mask,
1 * velocity,
GDK_KEY_Right,
kevent->state & ~extend_mask,
1,
0);
inc_y = process_event_queue_keys (kevent,
GDK_KEY_Up,
kevent->state | extend_mask,
-1 * velocity,
GDK_KEY_Up,
kevent->state & ~extend_mask,
-1,
GDK_KEY_Down,
kevent->state | extend_mask,
1 * velocity,
GDK_KEY_Down,
kevent->state & ~extend_mask,
1,
0);
switch (translate_type)
{
case GIMP_TRANSFORM_TYPE_SELECTION:
item = GIMP_ITEM (gimp_image_get_mask (image));
if (gimp_channel_is_empty (GIMP_CHANNEL (item)))
item = NULL;
edit_mode = GIMP_TRANSLATE_MODE_MASK;
undo_type = GIMP_UNDO_GROUP_MASK;
if (! item)
{
/* cannot happen, don't translate this message */
null_message = "There is no selection to move.";
}
else if (gimp_item_is_position_locked (item))
{
/* cannot happen, don't translate this message */
locked_message = "The selection's position is locked.";
}
break;
case GIMP_TRANSFORM_TYPE_PATH:
item = GIMP_ITEM (gimp_image_get_active_vectors (image));
edit_mode = GIMP_TRANSLATE_MODE_VECTORS;
undo_type = GIMP_UNDO_GROUP_ITEM_DISPLACE;
if (! item)
{
null_message = _("There is no path to move.");
}
else if (gimp_item_is_position_locked (item))
{
locked_message = _("The active path's position is locked.");
}
break;
case GIMP_TRANSFORM_TYPE_LAYER:
item = GIMP_ITEM (gimp_image_get_active_drawable (image));
undo_type = GIMP_UNDO_GROUP_ITEM_DISPLACE;
if (! item)
{
null_message = _("There is no layer to move.");
}
else if (GIMP_IS_LAYER_MASK (item))
{
edit_mode = GIMP_TRANSLATE_MODE_LAYER_MASK;
if (gimp_item_is_position_locked (item))
{
locked_message = _("The active layer's position is locked.");
}
else if (gimp_item_is_content_locked (item))
{
locked_message = _("The active layer's pixels are locked.");
}
}
else if (GIMP_IS_CHANNEL (item))
{
edit_mode = GIMP_TRANSLATE_MODE_CHANNEL;
if (gimp_item_is_position_locked (item))
{
locked_message = _("The active channel's position is locked.");
}
else if (gimp_item_is_content_locked (item))
{
locked_message = _("The active channel's pixels are locked.");
}
}
else if (gimp_layer_is_floating_sel (GIMP_LAYER (item)))
{
edit_mode = GIMP_TRANSLATE_MODE_FLOATING_SEL;
if (gimp_item_is_position_locked (item))
{
locked_message = _("The active layer's position is locked.");
}
}
else
{
edit_mode = GIMP_TRANSLATE_MODE_LAYER;
if (gimp_item_is_position_locked (item))
{
locked_message = _("The active layer's position is locked.");
}
}
break;
case GIMP_TRANSFORM_TYPE_IMAGE:
g_return_val_if_reached (FALSE);
}
if (! item)
{
gimp_tool_message_literal (tool, display, null_message);
if (type_box)
gimp_widget_blink (type_box);
return TRUE;
}
else if (locked_message)
{
gimp_tool_message_literal (tool, display, locked_message);
gimp_tools_blink_lock_box (display->gimp, item);
return TRUE;
}
if (inc_x == 0 && inc_y == 0)
return TRUE;
switch (edit_mode)
{
case GIMP_TRANSLATE_MODE_FLOATING_SEL:
undo_desc = _("Move Floating Selection");
break;
default:
undo_desc = GIMP_ITEM_GET_CLASS (item)->translate_desc;
break;
}
/* compress undo */
undo = gimp_image_undo_can_compress (image, GIMP_TYPE_UNDO_STACK, undo_type);
if (undo &&
g_object_get_data (G_OBJECT (undo),
"edit-selection-tool") == (gpointer) tool &&
g_object_get_data (G_OBJECT (undo),
"edit-selection-item") == (gpointer) item &&
g_object_get_data (G_OBJECT (undo),
"edit-selection-type") == GINT_TO_POINTER (edit_mode))
{
push_undo = FALSE;
}
if (push_undo)
{
if (gimp_image_undo_group_start (image, undo_type, undo_desc))
{
undo = gimp_image_undo_can_compress (image,
GIMP_TYPE_UNDO_STACK,
undo_type);
if (undo)
{
g_object_set_data (G_OBJECT (undo), "edit-selection-tool",
tool);
g_object_set_data (G_OBJECT (undo), "edit-selection-item",
item);
g_object_set_data (G_OBJECT (undo), "edit-selection-type",
GINT_TO_POINTER (edit_mode));
}
}
}
switch (edit_mode)
{
case GIMP_TRANSLATE_MODE_LAYER_MASK:
case GIMP_TRANSLATE_MODE_MASK:
gimp_item_translate (item, inc_x, inc_y, push_undo);
break;
case GIMP_TRANSLATE_MODE_MASK_TO_LAYER:
case GIMP_TRANSLATE_MODE_MASK_COPY_TO_LAYER:
/* this won't happen */
break;
case GIMP_TRANSLATE_MODE_VECTORS:
case GIMP_TRANSLATE_MODE_CHANNEL:
case GIMP_TRANSLATE_MODE_LAYER:
if (gimp_item_get_linked (item))
{
gimp_item_linked_translate (item, inc_x, inc_y, push_undo);
}
else
{
gimp_item_translate (item, inc_x, inc_y, push_undo);
}
break;
case GIMP_TRANSLATE_MODE_FLOATING_SEL:
gimp_item_translate (item, inc_x, inc_y, push_undo);
break;
}
if (push_undo)
gimp_image_undo_group_end (image);
else
gimp_undo_refresh_preview (undo,
gimp_get_user_context (display->gimp));
gimp_image_flush (image);
return TRUE;
}
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