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PIKApp/app/tools/pikaeditselectiontool.c

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/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* 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 <glib.h>
#include <glib/gprintf.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "libpikabase/pikabase.h"
#include "libpikamath/pikamath.h"
#include "libpikawidgets/pikawidgets.h"
#include "tools-types.h"
#include "core/pika.h"
#include "core/pika-utils.h"
#include "core/pikaboundary.h"
#include "core/pikagrouplayer.h"
#include "core/pikaimage.h"
#include "core/pikaimage-guides.h"
#include "core/pikaimage-item-list.h"
#include "core/pikaimage-undo.h"
#include "core/pikalayer.h"
#include "core/pikalayermask.h"
#include "core/pikaprojection.h"
#include "core/pikaselection.h"
#include "core/pikaundostack.h"
#include "widgets/pikawidgets-utils.h"
#include "display/pikadisplay.h"
#include "display/pikadisplayshell.h"
#include "display/pikadisplayshell-appearance.h"
#include "display/pikadisplayshell-selection.h"
#include "display/pikadisplayshell-transform.h"
#include "pikadrawtool.h"
#include "pikaeditselectiontool.h"
#include "pikatoolcontrol.h"
#include "pikatools-utils.h"
#include "tool_manager.h"
#include "pika-intl.h"
#define ARROW_VELOCITY 25
typedef struct _PikaEditSelectionTool PikaEditSelectionTool;
typedef struct _PikaEditSelectionToolClass PikaEditSelectionToolClass;
struct _PikaEditSelectionTool
{
PikaDrawTool 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 */
PikaBoundSeg *segs_in; /* Pointer to the channel sel. segs */
PikaBoundSeg *segs_out; /* Pointer to the channel sel. segs */
gdouble center_x; /* Where to draw the mark of center */
gdouble center_y;
PikaTranslateMode 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 _PikaEditSelectionToolClass
{
PikaDrawToolClass parent_class;
};
static void pika_edit_selection_tool_finalize (GObject *object);
static void pika_edit_selection_tool_button_release (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaButtonReleaseType release_type,
PikaDisplay *display);
static void pika_edit_selection_tool_motion (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaDisplay *display);
static void pika_edit_selection_tool_active_modifier_key (PikaTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
PikaDisplay *display);
static void pika_edit_selection_tool_draw (PikaDrawTool *tool);
static GList * pika_edit_selection_tool_get_selected_items (PikaEditSelectionTool *edit_select,
PikaImage *image);
static void pika_edit_selection_tool_calc_coords (PikaEditSelectionTool *edit_select,
PikaImage *image,
gdouble x,
gdouble y);
static void pika_edit_selection_tool_start_undo_group (PikaEditSelectionTool *edit_select,
PikaImage *image);
G_DEFINE_TYPE (PikaEditSelectionTool, pika_edit_selection_tool,
PIKA_TYPE_DRAW_TOOL)
#define parent_class pika_edit_selection_tool_parent_class
static void
pika_edit_selection_tool_class_init (PikaEditSelectionToolClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
PikaToolClass *tool_class = PIKA_TOOL_CLASS (klass);
PikaDrawToolClass *draw_class = PIKA_DRAW_TOOL_CLASS (klass);
object_class->finalize = pika_edit_selection_tool_finalize;
tool_class->button_release = pika_edit_selection_tool_button_release;
tool_class->motion = pika_edit_selection_tool_motion;
tool_class->active_modifier_key = pika_edit_selection_tool_active_modifier_key;
draw_class->draw = pika_edit_selection_tool_draw;
}
static void
pika_edit_selection_tool_init (PikaEditSelectionTool *edit_select)
{
PikaTool *tool = PIKA_TOOL (edit_select);
edit_select->first_move = TRUE;
pika_tool_control_set_active_modifiers (tool->control,
PIKA_TOOL_ACTIVE_MODIFIERS_SEPARATE);
}
static void
pika_edit_selection_tool_finalize (GObject *object)
{
PikaEditSelectionTool *edit_select = PIKA_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
pika_edit_selection_tool_start (PikaTool *parent_tool,
PikaDisplay *display,
const PikaCoords *coords,
PikaTranslateMode edit_mode,
gboolean propagate_release)
{
PikaEditSelectionTool *edit_select;
PikaTool *tool;
PikaDisplayShell *shell;
PikaImage *image;
GList *selected_items;
GList *iter;
GList *list;
gint off_x = G_MAXINT;
gint off_y = G_MAXINT;
edit_select = g_object_new (PIKA_TYPE_EDIT_SELECTION_TOOL,
"tool-info", parent_tool->tool_info,
NULL);
edit_select->propagate_release = propagate_release;
tool = PIKA_TOOL (edit_select);
shell = pika_display_get_shell (display);
image = pika_display_get_image (display);
/* Make a check to see if it should be a floating selection translation */
if ((edit_mode == PIKA_TRANSLATE_MODE_MASK_TO_LAYER ||
edit_mode == PIKA_TRANSLATE_MODE_MASK_COPY_TO_LAYER) &&
pika_image_get_floating_selection (image))
{
edit_mode = PIKA_TRANSLATE_MODE_FLOATING_SEL;
}
if (edit_mode == PIKA_TRANSLATE_MODE_LAYER)
{
GList *layers = pika_image_get_selected_layers (image);
if (layers && pika_layer_is_floating_sel (layers->data))
edit_mode = PIKA_TRANSLATE_MODE_FLOATING_SEL;
}
edit_select->edit_mode = edit_mode;
pika_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;
selected_items = pika_edit_selection_tool_get_selected_items (edit_select, image);
g_return_if_fail (selected_items != NULL);
for (iter = selected_items; iter; iter = iter->next)
{
gint item_off_x, item_off_y;
pika_item_get_offset (iter->data, &item_off_x, &item_off_y);
off_x = MIN (off_x, item_off_x);
off_y = MIN (off_y, item_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 */
{
PikaChannel *channel;
const PikaBoundSeg *segs_in;
const PikaBoundSeg *segs_out;
if (PIKA_IS_CHANNEL (selected_items->data))
channel = PIKA_CHANNEL (selected_items->data);
else
channel = pika_image_get_mask (image);
pika_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_memdup2 (segs_in,
edit_select->num_segs_in *
sizeof (PikaBoundSeg));
edit_select->segs_out = g_memdup2 (segs_out,
edit_select->num_segs_out *
sizeof (PikaBoundSeg));
if (edit_select->edit_mode == PIKA_TRANSLATE_MODE_VECTORS)
{
edit_select->sel_x = 0;
edit_select->sel_y = 0;
edit_select->sel_width = pika_image_get_width (image);
edit_select->sel_height = pika_image_get_height (image);
}
else
{
/* find the bounding box of the selection mask - this is used
* for the case of a PIKA_TRANSLATE_MODE_MASK_TO_LAYER, where
* the translation will result in floating the selection mask
* and translating the resulting layer
*/
pika_item_mask_intersect (selected_items->data,
&edit_select->sel_x,
&edit_select->sel_y,
&edit_select->sel_width,
&edit_select->sel_height);
}
}
pika_edit_selection_tool_calc_coords (edit_select, image,
coords->x, coords->y);
{
gint x = 0;
gint y = 0;
gint w = 0;
gint h = 0;
switch (edit_select->edit_mode)
{
case PIKA_TRANSLATE_MODE_CHANNEL:
case PIKA_TRANSLATE_MODE_MASK:
case PIKA_TRANSLATE_MODE_LAYER_MASK:
edit_select->delayed_items = pika_image_item_list_filter (g_list_copy (selected_items));
pika_image_item_list_bounds (image, edit_select->delayed_items, &x, &y, &w, &h);
x += off_x;
y += off_y;
break;
case PIKA_TRANSLATE_MODE_MASK_TO_LAYER:
case PIKA_TRANSLATE_MODE_MASK_COPY_TO_LAYER:
/* MASK_TO_LAYER and MASK_COPY_TO_LAYER create a live_item later */
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 PIKA_TRANSLATE_MODE_LAYER:
case PIKA_TRANSLATE_MODE_FLOATING_SEL:
case PIKA_TRANSLATE_MODE_VECTORS:
edit_select->live_items = pika_image_item_list_filter (g_list_copy (selected_items));
pika_image_item_list_bounds (image, edit_select->live_items, &x, &y, &w, &h);
break;
}
pika_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;
}
for (list = edit_select->live_items; list; list = g_list_next (list))
{
PikaItem *item = list->data;
pika_viewable_preview_freeze (PIKA_VIEWABLE (item));
pika_item_start_transform (item, TRUE);
}
g_list_free (selected_items);
tool_manager_push_tool (display->pika, tool);
pika_tool_control_activate (tool->control);
tool->display = display;
/* pause the current selection */
pika_display_shell_selection_pause (shell);
/* initialize the statusbar display */
pika_tool_push_status_coords (tool, display,
pika_tool_control_get_precision (tool->control),
_("Move: "), 0, ", ", 0, NULL);
pika_draw_tool_start (PIKA_DRAW_TOOL (edit_select), display);
}
static void
pika_edit_selection_tool_button_release (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaButtonReleaseType release_type,
PikaDisplay *display)
{
PikaEditSelectionTool *edit_select = PIKA_EDIT_SELECTION_TOOL (tool);
PikaDisplayShell *shell = pika_display_get_shell (display);
PikaImage *image = pika_display_get_image (display);
GList *list;
/* resume the current selection */
pika_display_shell_selection_resume (shell);
pika_tool_pop_status (tool, display);
pika_tool_control_halt (tool->control);
/* Stop and free the selection core */
pika_draw_tool_stop (PIKA_DRAW_TOOL (edit_select));
tool_manager_pop_tool (display->pika);
/* move the items -- whether there has been movement or not!
* (to ensure that there's something on the undo stack)
*/
pika_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))
{
PikaItem *item = list->data;
pika_item_end_transform (item, TRUE);
pika_viewable_preview_thaw (PIKA_VIEWABLE (item));
}
pika_image_undo_group_end (image);
if (release_type == PIKA_BUTTON_RELEASE_CANCEL)
{
/* Operation cancelled - undo the undo-group! */
pika_image_undo (image);
}
pika_image_flush (image);
if (edit_select->propagate_release &&
tool_manager_get_active (display->pika))
{
tool_manager_button_release_active (display->pika,
coords, time, state,
display);
}
g_object_unref (edit_select);
shell->equidistance_side_horizontal = PIKA_ARRANGE_HFILL;
shell->equidistance_side_vertical = PIKA_ARRANGE_HFILL;
shell->snapped_side_horizontal = PIKA_ARRANGE_HFILL;
shell->snapped_side_vertical = PIKA_ARRANGE_HFILL;
}
static void
pika_edit_selection_tool_update_motion (PikaEditSelectionTool *edit_select,
gdouble new_x,
gdouble new_y,
PikaDisplay *display)
{
PikaDrawTool *draw_tool = PIKA_DRAW_TOOL (edit_select);
PikaTool *tool = PIKA_TOOL (edit_select);
PikaDisplayShell *shell = pika_display_get_shell (display);
PikaImage *image = pika_display_get_image (display);
gint dx;
gint dy;
gdk_display_flush (gtk_widget_get_display (GTK_WIDGET (shell)));
pika_draw_tool_pause (draw_tool);
if (edit_select->constrain)
{
pika_constrain_line (edit_select->start_x, edit_select->start_y,
&new_x, &new_y,
PIKA_CONSTRAIN_LINE_45_DEGREES, 0.0, 1.0, 1.0);
}
pika_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)
{
GList *selected_items;
GList *list;
GError *error = NULL;
selected_items = pika_edit_selection_tool_get_selected_items (edit_select, image);
edit_select->cuml_x += dx;
edit_select->cuml_y += dy;
switch (edit_select->edit_mode)
{
case PIKA_TRANSLATE_MODE_LAYER_MASK:
case PIKA_TRANSLATE_MODE_MASK:
case PIKA_TRANSLATE_MODE_VECTORS:
case PIKA_TRANSLATE_MODE_CHANNEL:
edit_select->last_x = edit_select->current_x;
edit_select->last_y = edit_select->current_y;
/* fallthru */
case PIKA_TRANSLATE_MODE_LAYER:
pika_image_item_list_translate (image,
edit_select->live_items,
dx, dy,
edit_select->first_move);
break;
case PIKA_TRANSLATE_MODE_MASK_TO_LAYER:
case PIKA_TRANSLATE_MODE_MASK_COPY_TO_LAYER:
if (! pika_selection_float (PIKA_SELECTION (pika_image_get_mask (image)),
selected_items,
pika_get_user_context (display->pika),
edit_select->edit_mode ==
PIKA_TRANSLATE_MODE_MASK_TO_LAYER,
0, 0, &error))
{
/* no region to float, abort safely */
pika_message_literal (display->pika, G_OBJECT (display),
PIKA_MESSAGE_WARNING,
error->message);
g_clear_error (&error);
pika_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 = PIKA_TRANSLATE_MODE_FLOATING_SEL;
/* Selected items should have changed. */
edit_select->live_items = pika_edit_selection_tool_get_selected_items (edit_select, image);
for (list = edit_select->live_items; list; list = g_list_next (list))
{
PikaItem *item = list->data;
pika_viewable_preview_freeze (PIKA_VIEWABLE (item));
pika_item_start_transform (item, TRUE);
}
/* fallthru */
case PIKA_TRANSLATE_MODE_FLOATING_SEL:
pika_image_item_list_translate (image,
edit_select->live_items,
dx, dy,
edit_select->first_move);
break;
}
edit_select->first_move = FALSE;
g_list_free (selected_items);
}
pika_projection_flush (pika_image_get_projection (image));
pika_tool_pop_status (tool, display);
pika_tool_push_status_coords (tool, display,
pika_tool_control_get_precision (tool->control),
_("Move: "),
edit_select->cuml_x,
", ",
edit_select->cuml_y,
NULL);
pika_draw_tool_resume (draw_tool);
}
static void
pika_edit_selection_tool_motion (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaDisplay *display)
{
PikaEditSelectionTool *edit_select = PIKA_EDIT_SELECTION_TOOL (tool);
edit_select->last_motion_x = coords->x;
edit_select->last_motion_y = coords->y;
pika_edit_selection_tool_update_motion (edit_select,
coords->x, coords->y,
display);
}
static void
pika_edit_selection_tool_active_modifier_key (PikaTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
PikaDisplay *display)
{
PikaEditSelectionTool *edit_select = PIKA_EDIT_SELECTION_TOOL (tool);
edit_select->constrain = (state & pika_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)
{
pika_edit_selection_tool_update_motion (edit_select,
edit_select->last_motion_x,
edit_select->last_motion_y,
display);
}
}
static void
pika_edit_selection_tool_draw (PikaDrawTool *draw_tool)
{
PikaEditSelectionTool *edit_select = PIKA_EDIT_SELECTION_TOOL (draw_tool);
PikaDisplay *display = PIKA_TOOL (draw_tool)->display;
PikaImage *image = pika_display_get_image (display);
PikaDisplayShell *shell = pika_display_get_shell (display);
PikaUnit unit = pika_display_shell_get_unit (shell);
const gchar *abbreviation = pika_unit_get_abbreviation (unit);
GList *selected_items;
GList *iter;
gdouble xresolution, yresolution;
gint off_x = G_MAXINT;
gint off_y = G_MAXINT;
pika_image_get_resolution (image, &xresolution, &yresolution);
selected_items = pika_edit_selection_tool_get_selected_items (edit_select, image);
g_return_if_fail (selected_items != NULL);
for (iter = selected_items; iter; iter = iter->next)
{
gint item_off_x, item_off_y;
pika_item_get_offset (iter->data, &item_off_x, &item_off_y);
off_x = MIN (off_x, item_off_x);
off_y = MIN (off_y, item_off_y);
}
switch (edit_select->edit_mode)
{
case PIKA_TRANSLATE_MODE_CHANNEL:
case PIKA_TRANSLATE_MODE_LAYER_MASK:
case PIKA_TRANSLATE_MODE_MASK:
{
gboolean floating_sel = FALSE;
if (edit_select->edit_mode == PIKA_TRANSLATE_MODE_MASK)
{
GList *layers = pika_image_get_selected_layers (image);
if (g_list_length (layers) == 1)
floating_sel = pika_layer_is_floating_sel (layers->data);
}
if (! floating_sel && edit_select->segs_in)
{
pika_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)
{
pika_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 != PIKA_TRANSLATE_MODE_MASK)
{
pika_draw_tool_add_rectangle (draw_tool,
FALSE,
edit_select->cuml_x + off_x,
edit_select->cuml_y + off_y,
pika_item_get_width (selected_items->data),
pika_item_get_height (selected_items->data));
}
}
break;
case PIKA_TRANSLATE_MODE_MASK_TO_LAYER:
case PIKA_TRANSLATE_MODE_MASK_COPY_TO_LAYER:
pika_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 PIKA_TRANSLATE_MODE_LAYER:
case PIKA_TRANSLATE_MODE_VECTORS:
{
GList *translate_items;
PikaAlignmentType snapped_side_horizontal = shell->snapped_side_horizontal;
PikaAlignmentType snapped_side_vertical = shell->snapped_side_vertical;
PikaAlignmentType equidistance_side_horizontal = shell->equidistance_side_horizontal;
PikaAlignmentType equidistance_side_vertical = shell->equidistance_side_vertical;
gint x, y, w, h;
translate_items = pika_image_item_list_filter (g_list_copy (selected_items));
pika_image_item_list_bounds (image, translate_items, &x, &y, &w, &h);
g_list_free (translate_items);
pika_draw_tool_add_rectangle (draw_tool, FALSE, x, y, w, h);
if (snapped_side_horizontal != PIKA_ARRANGE_HFILL)
{
PikaLayer *snapped_layer_horizontal = shell->snapped_layer_horizontal;
gint gx, gy, gw, gh;
pika_item_bounds (PIKA_ITEM (snapped_layer_horizontal), &gx, &gy, &gw, &gh);
pika_item_get_offset (PIKA_ITEM (snapped_layer_horizontal), &gx, &gy);
switch (snapped_side_horizontal)
{
case PIKA_ALIGN_LEFT:
pika_draw_tool_add_line (draw_tool, x, y+h/2, x, gy+gh/2);
break;
case PIKA_ALIGN_RIGHT:
pika_draw_tool_add_line (draw_tool, x+w, y+h/2, x+w, gy+gh/2);
break;
case PIKA_ALIGN_VCENTER:
pika_draw_tool_add_line (draw_tool, x+w/2, y+h/2, x+w/2, gy+gh/2);
break;
default:
break;
}
}
if (snapped_side_vertical != PIKA_ARRANGE_HFILL)
{
PikaLayer *snapped_layer_vertical = shell->snapped_layer_vertical;
gint gx, gy, gw, gh;
pika_item_bounds (PIKA_ITEM (snapped_layer_vertical), &gx, &gy, &gw, &gh);
pika_item_get_offset (PIKA_ITEM (snapped_layer_vertical), &gx, &gy);
switch (snapped_side_vertical)
{
case PIKA_ALIGN_TOP:
pika_draw_tool_add_line (draw_tool, x+w/2, y, gx+gw/2, y);
break;
case PIKA_ALIGN_BOTTOM:
pika_draw_tool_add_line (draw_tool, x+w/2, y+h, gx+gw/2, y+h);
break;
case PIKA_ALIGN_HCENTER:
pika_draw_tool_add_line (draw_tool, x+w/2, y+h/2, gx+gw/2, y+h/2);
break;
default:
break;
}
}
if (equidistance_side_horizontal != PIKA_ARRANGE_HFILL)
{
PikaLayer *near_layer1 = shell->near_layer_horizontal1;
PikaLayer *near_layer2 = shell->near_layer_horizontal2;
GtkStyleContext *style = gtk_widget_get_style_context (GTK_WIDGET (shell));
gdouble pixels_to_units;
gdouble font_size;
gint gx1 = 0;
gint gy1 = 0;
gint gw1 = 0;
gint gh1 = 0;
gint gx2 = 0;
gint gy2 = 0;
gint gw2 = 0;
gint gh2 = 0;
gint distance;
gchar distance_string[32];
gtk_style_context_get (style, gtk_style_context_get_state (style),
"font-size", &font_size, NULL);
pika_item_bounds (PIKA_ITEM (near_layer1), &gx1, &gy1, &gw1, &gh1);
pika_item_get_offset (PIKA_ITEM (near_layer1), &gx1, &gy1);
pika_item_bounds (PIKA_ITEM (near_layer2), &gx2, &gy2, &gw2, &gh2);
pika_item_get_offset (PIKA_ITEM (near_layer2), &gx2, &gy2);
pika_draw_tool_add_rectangle (draw_tool, FALSE, gx1, gy1, gw1, gh1);
pika_draw_tool_add_rectangle (draw_tool, FALSE, gx2, gy2, gw2, gh2);
switch (equidistance_side_horizontal)
{
case PIKA_ALIGN_LEFT:
distance = x - (gx1+gw1);
pixels_to_units = pika_pixels_to_units ((gdouble) distance, unit, xresolution);
pika_draw_tool_add_line (draw_tool, x, y+h/2, gx1+gw1, y+h/2);
pika_draw_tool_add_line (draw_tool, gx1, gy1+gh1/2, gx2+gw2, gy1+gh1/2);
g_sprintf (distance_string, "%g %s", pixels_to_units, abbreviation);
pika_draw_tool_add_text (draw_tool, x - distance/2, y+h/2, font_size, distance_string);
pika_draw_tool_add_text (draw_tool, gx1 - distance/2, gy1+gh1/2, font_size, distance_string);
break;
case PIKA_ALIGN_RIGHT:
distance = gx1 - (x+w);
pixels_to_units = pika_pixels_to_units ((gdouble) distance, unit, xresolution);
pika_draw_tool_add_line (draw_tool, x+w, y+h/2, gx1, y+h/2);
pika_draw_tool_add_line (draw_tool, gx1+gw1, gy1+gh1/2, gx2, gy1+gh1/2);
g_sprintf (distance_string, "%g %s", pixels_to_units, abbreviation);
pika_draw_tool_add_text (draw_tool, (x+w) + distance/2, y+h/2, font_size, distance_string);
pika_draw_tool_add_text (draw_tool, (gx1+gw1) + distance/2, gy1+gh1/2, font_size, distance_string);
break;
default:
break;
}
}
if (equidistance_side_vertical != PIKA_ARRANGE_HFILL)
{
PikaLayer *near_layer1 = shell->near_layer_vertical1;
PikaLayer *near_layer2 = shell->near_layer_vertical2;
GtkStyleContext *style = gtk_widget_get_style_context (GTK_WIDGET (shell));
gdouble pixels_to_units;
gdouble font_size;
gint gx1 = 0;
gint gy1 = 0;
gint gw1 = 0;
gint gh1 = 0;
gint gx2 = 0;
gint gy2 = 0;
gint gw2 = 0;
gint gh2 = 0;
gint distance;
gchar distance_string[32];
gtk_style_context_get (style, gtk_style_context_get_state (style),
"font-size", &font_size, NULL);
pika_item_bounds (PIKA_ITEM (near_layer1), &gx1, &gy1, &gw1, &gh1);
pika_item_get_offset (PIKA_ITEM (near_layer1), &gx1, &gy1);
pika_item_bounds (PIKA_ITEM (near_layer2), &gx2, &gy2, &gw2, &gh2);
pika_item_get_offset (PIKA_ITEM (near_layer2), &gx2, &gy2);
pika_draw_tool_add_rectangle (draw_tool, FALSE, gx1, gy1, gw1, gh1);
pika_draw_tool_add_rectangle (draw_tool, FALSE, gx2, gy2, gw2, gh2);
switch (equidistance_side_vertical)
{
case PIKA_ALIGN_TOP:
distance = y - (gy1+gh1);
pixels_to_units = pika_pixels_to_units ((gdouble) distance, unit, yresolution);
pika_draw_tool_add_line (draw_tool, x+w/2, y, x+w/2, gy1+gh1);
pika_draw_tool_add_line (draw_tool, gx1+gw1/2, gy1, gx1+gw1/2, gy2+gh2);
g_sprintf (distance_string, "%g %s", pixels_to_units, abbreviation);
pika_draw_tool_add_text (draw_tool, x+w/2, y - distance/2, font_size, distance_string);
pika_draw_tool_add_text (draw_tool, gx1+gw1/2, gy1 - distance/2, font_size, distance_string);
break;
case PIKA_ALIGN_BOTTOM:
distance = gy1 - (y+h);
pixels_to_units = pika_pixels_to_units ((gdouble) distance, unit, yresolution);
pika_draw_tool_add_line (draw_tool, x+w/2, y+h, x+w/2, gy1);
pika_draw_tool_add_line (draw_tool, gx1+gw1/2, gy1+gh1, gx1+gw1/2, gy2);
g_sprintf (distance_string, "%g %s", pixels_to_units, abbreviation);
pika_draw_tool_add_text (draw_tool, x+w/2, (y+h) + distance/2, font_size, distance_string);
pika_draw_tool_add_text (draw_tool, gx1+gw1/2, (gy1+gh1) + distance/2, font_size, distance_string);
break;
default:
break;
}
}
}
break;
case PIKA_TRANSLATE_MODE_FLOATING_SEL:
if (edit_select->segs_in)
{
pika_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 */
pika_draw_tool_add_handle (draw_tool,
PIKA_HANDLE_CROSS,
edit_select->center_x + edit_select->cuml_x,
edit_select->center_y + edit_select->cuml_y,
PIKA_TOOL_HANDLE_SIZE_SMALL,
PIKA_TOOL_HANDLE_SIZE_SMALL,
PIKA_HANDLE_ANCHOR_CENTER);
PIKA_DRAW_TOOL_CLASS (parent_class)->draw (draw_tool);
g_list_free (selected_items);
}
static GList *
pika_edit_selection_tool_get_selected_items (PikaEditSelectionTool *edit_select,
PikaImage *image)
{
GList *selected_items;
switch (edit_select->edit_mode)
{
case PIKA_TRANSLATE_MODE_VECTORS:
selected_items = g_list_copy (pika_image_get_selected_vectors (image));
break;
case PIKA_TRANSLATE_MODE_LAYER:
selected_items = g_list_copy (pika_image_get_selected_layers (image));
break;
case PIKA_TRANSLATE_MODE_MASK:
selected_items = g_list_prepend (NULL, pika_image_get_mask (image));
break;
default:
selected_items = pika_image_get_selected_drawables (image);
break;
}
return selected_items;
}
static void
pika_edit_selection_tool_calc_coords (PikaEditSelectionTool *edit_select,
PikaImage *image,
gdouble x,
gdouble y)
{
GList *selected_items;
GList *iter;
gint off_x = G_MAXINT;
gint off_y = G_MAXINT;
gdouble x1, y1;
gdouble dx, dy;
selected_items = pika_edit_selection_tool_get_selected_items (edit_select, image);
g_return_if_fail (selected_items != NULL);
for (iter = selected_items; iter; iter = iter->next)
{
gint item_off_x, item_off_y;
pika_item_get_offset (iter->data, &item_off_x, &item_off_y);
off_x = MIN (off_x, item_off_x);
off_y = MIN (off_y, item_off_y);
}
g_list_free (selected_items);
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
pika_edit_selection_tool_start_undo_group (PikaEditSelectionTool *edit_select,
PikaImage *image)
{
GList *selected_items;
const gchar *undo_desc = NULL;
switch (edit_select->edit_mode)
{
case PIKA_TRANSLATE_MODE_VECTORS:
case PIKA_TRANSLATE_MODE_CHANNEL:
case PIKA_TRANSLATE_MODE_LAYER_MASK:
case PIKA_TRANSLATE_MODE_MASK:
case PIKA_TRANSLATE_MODE_LAYER:
selected_items = pika_edit_selection_tool_get_selected_items (edit_select, image);
undo_desc = PIKA_ITEM_GET_CLASS (selected_items->data)->translate_desc;
g_list_free (selected_items);
break;
case PIKA_TRANSLATE_MODE_MASK_TO_LAYER:
case PIKA_TRANSLATE_MODE_MASK_COPY_TO_LAYER:
case PIKA_TRANSLATE_MODE_FLOATING_SEL:
undo_desc = _("Move Floating Selection");
break;
default:
g_return_if_reached ();
}
pika_image_undo_group_start (image,
edit_select->edit_mode ==
PIKA_TRANSLATE_MODE_MASK ?
PIKA_UNDO_GROUP_MASK :
PIKA_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
pika_edit_selection_tool_key_press (PikaTool *tool,
GdkEventKey *kevent,
PikaDisplay *display)
{
PikaTransformType translate_type;
if (kevent->state & GDK_MOD1_MASK)
{
translate_type = PIKA_TRANSFORM_TYPE_SELECTION;
}
else if (kevent->state & pika_get_toggle_behavior_mask ())
{
translate_type = PIKA_TRANSFORM_TYPE_PATH;
}
else
{
translate_type = PIKA_TRANSFORM_TYPE_LAYER;
}
return pika_edit_selection_tool_translate (tool, kevent, translate_type,
display, NULL);
}
gboolean
pika_edit_selection_tool_translate (PikaTool *tool,
GdkEventKey *kevent,
PikaTransformType translate_type,
PikaDisplay *display,
GtkWidget **type_box)
{
gint inc_x = 0;
gint inc_y = 0;
PikaUndo *undo;
gboolean push_undo = TRUE;
PikaImage *image = pika_display_get_image (display);
PikaItem *active_item = NULL;
GList *selected_items = NULL;
PikaTranslateMode edit_mode = PIKA_TRANSLATE_MODE_MASK;
PikaUndoType undo_type = PIKA_UNDO_GROUP_MASK;
const gchar *undo_desc = NULL;
GdkModifierType extend_mask = pika_get_extend_selection_mask ();
const gchar *null_message = NULL;
const gchar *locked_message = NULL;
PikaItem *locked_item = NULL;
GList *iter;
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 /
pika_zoom_model_get_factor (pika_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 PIKA_TRANSFORM_TYPE_SELECTION:
active_item = PIKA_ITEM (pika_image_get_mask (image));
if (pika_channel_is_empty (PIKA_CHANNEL (active_item)))
active_item = NULL;
edit_mode = PIKA_TRANSLATE_MODE_MASK;
undo_type = PIKA_UNDO_GROUP_MASK;
if (! active_item)
{
/* cannot happen, don't translate this message */
null_message = "There is no selection to move.";
}
else if (pika_item_is_position_locked (active_item,
&locked_item))
{
/* cannot happen, don't translate this message */
locked_message = "The selection's position is locked.";
}
break;
case PIKA_TRANSFORM_TYPE_PATH:
selected_items = pika_image_get_selected_vectors (image);
selected_items = g_list_copy (selected_items);
edit_mode = PIKA_TRANSLATE_MODE_VECTORS;
undo_type = PIKA_UNDO_GROUP_ITEM_DISPLACE;
if (selected_items == NULL)
{
null_message = _("There are no paths to move.");
}
else
{
for (iter = selected_items; iter; iter = iter->next)
if (pika_item_is_position_locked (iter->data, NULL))
{
locked_item = iter->data;
locked_message = _("A selected path's position is locked.");
break;
}
}
break;
case PIKA_TRANSFORM_TYPE_LAYER:
selected_items = pika_image_get_selected_drawables (image);
undo_type = PIKA_UNDO_GROUP_ITEM_DISPLACE;
if (! selected_items)
{
null_message = _("There is no layer to move.");
}
else if (PIKA_IS_LAYER_MASK (selected_items->data))
{
edit_mode = PIKA_TRANSLATE_MODE_LAYER_MASK;
if (pika_item_is_position_locked (selected_items->data,
&locked_item))
{
locked_message = _("The selected layer's position is locked.");
}
else if (pika_item_is_content_locked (selected_items->data,
&locked_item))
{
locked_message = _("The selected layer's pixels are locked.");
}
}
else if (PIKA_IS_CHANNEL (selected_items->data))
{
edit_mode = PIKA_TRANSLATE_MODE_CHANNEL;
for (iter = selected_items; iter; iter = iter->next)
if (pika_item_is_position_locked (iter->data, NULL))
{
locked_item = iter->data;
locked_message = _("A selected channel's position is locked.");
break;
}
}
else if (pika_layer_is_floating_sel (selected_items->data))
{
edit_mode = PIKA_TRANSLATE_MODE_FLOATING_SEL;
if (pika_item_is_position_locked (selected_items->data,
&locked_item))
{
locked_message = _("The selected layer's position is locked.");
}
}
else
{
edit_mode = PIKA_TRANSLATE_MODE_LAYER;
for (iter = selected_items; iter; iter = iter->next)
if (pika_item_is_position_locked (iter->data, NULL))
{
locked_item = iter->data;
locked_message = _("A selected layer's position is locked.");
break;
}
}
break;
case PIKA_TRANSFORM_TYPE_IMAGE:
g_return_val_if_reached (FALSE);
}
if (! active_item && ! selected_items)
{
pika_tool_message_literal (tool, display, null_message);
if (type_box)
{
pika_tools_show_tool_options (display->pika);
if (*type_box)
pika_widget_blink (*type_box);
}
return TRUE;
}
else if (locked_message)
{
pika_tool_message_literal (tool, display, locked_message);
if (locked_item == NULL)
locked_item = active_item ? active_item : selected_items->data;
pika_tools_blink_lock_box (display->pika, locked_item);
g_list_free (selected_items);
return TRUE;
}
if (inc_x == 0 && inc_y == 0)
{
g_list_free (selected_items);
return TRUE;
}
else if (! selected_items)
{
selected_items = g_list_prepend (NULL, active_item);
}
switch (edit_mode)
{
case PIKA_TRANSLATE_MODE_FLOATING_SEL:
undo_desc = _("Move Floating Selection");
break;
default:
undo_desc = PIKA_ITEM_GET_CLASS (selected_items->data)->translate_desc;
break;
}
/* compress undo */
undo = pika_image_undo_can_compress (image, PIKA_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-type") == GINT_TO_POINTER (edit_mode))
{
GList *undo_items;
undo_items = g_object_get_data (G_OBJECT (undo), "edit-selection-items");
if (pika_image_equal_selected_drawables (image, undo_items))
{
push_undo = FALSE;
}
}
if (push_undo)
{
if (pika_image_undo_group_start (image, undo_type, undo_desc))
{
undo = pika_image_undo_can_compress (image,
PIKA_TYPE_UNDO_STACK,
undo_type);
if (undo)
{
g_object_set_data (G_OBJECT (undo), "edit-selection-tool",
tool);
g_object_set_data_full (G_OBJECT (undo), "edit-selection-items",
g_list_copy (selected_items),
(GDestroyNotify) g_list_free);
g_object_set_data (G_OBJECT (undo), "edit-selection-type",
GINT_TO_POINTER (edit_mode));
}
}
}
pika_image_item_list_translate (pika_item_get_image (selected_items->data),
selected_items, inc_x, inc_y, push_undo);
if (push_undo)
pika_image_undo_group_end (image);
else
pika_undo_refresh_preview (undo,
pika_get_user_context (display->pika));
pika_image_flush (image);
g_list_free (selected_items);
return TRUE;
}
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