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gimp/app/tools/gimpaligntool.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 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "config/gimpdisplayconfig.h"
#include "core/gimp.h"
#include "core/gimpguide.h"
#include "core/gimpimage.h"
#include "core/gimpimage-arrange.h"
#include "core/gimpimage-guides.h"
#include "core/gimpimage-undo.h"
#include "core/gimplayer.h"
#include "core/gimplist.h"
#include "widgets/gimphelp-ids.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpdisplayshell-appearance.h"
#include "gimpalignoptions.h"
#include "gimpaligntool.h"
#include "gimptoolcontrol.h"
#include "gimp-intl.h"
/* local function prototypes */
static GObject * gimp_align_tool_constructor (GType type,
guint n_params,
GObjectConstructParam *params);
static gboolean gimp_align_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error);
static void gimp_align_tool_finalize (GObject *object);
static void gimp_align_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display);
static void gimp_align_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static void gimp_align_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_tyle,
GimpDisplay *display);
static void gimp_align_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static void gimp_align_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display);
static void gimp_align_tool_draw (GimpDrawTool *draw_tool);
static GtkWidget *button_with_stock (GimpAlignmentType action,
GimpAlignTool *align_tool);
static GtkWidget *gimp_align_tool_controls (GimpAlignTool *align_tool);
static void do_alignment (GtkWidget *widget,
gpointer data);
static void clear_selected_object (GObject *object,
GimpAlignTool *align_tool);
static void clear_all_selected_objects (GimpAlignTool *align_tool);
static GimpLayer *select_layer_by_coords (GimpImage *image,
gint x,
gint y);
void gimp_image_arrange_objects (GimpImage *image,
GList *list,
GimpAlignmentType alignment,
GObject *reference,
GimpAlignmentType reference_alignment,
gint offset);
G_DEFINE_TYPE (GimpAlignTool, gimp_align_tool, GIMP_TYPE_DRAW_TOOL)
#define parent_class gimp_align_tool_parent_class
void
gimp_align_tool_register (GimpToolRegisterCallback callback,
gpointer data)
{
(* callback) (GIMP_TYPE_ALIGN_TOOL,
GIMP_TYPE_ALIGN_OPTIONS,
gimp_align_options_gui,
0,
"gimp-align-tool",
_("Align"),
_("Alignment Tool: Align or arrange layers and other objects"),
N_("_Align"), "Q",
NULL, GIMP_HELP_TOOL_MOVE,
GIMP_STOCK_TOOL_ALIGN,
data);
}
static void
gimp_align_tool_class_init (GimpAlignToolClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
GimpDrawToolClass *draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass);
object_class->finalize = gimp_align_tool_finalize;
object_class->constructor = gimp_align_tool_constructor;
tool_class->initialize = gimp_align_tool_initialize;
tool_class->control = gimp_align_tool_control;
tool_class->button_press = gimp_align_tool_button_press;
tool_class->button_release = gimp_align_tool_button_release;
tool_class->motion = gimp_align_tool_motion;
tool_class->cursor_update = gimp_align_tool_cursor_update;
draw_tool_class->draw = gimp_align_tool_draw;
}
static void
gimp_align_tool_init (GimpAlignTool *align_tool)
{
GimpTool *tool = GIMP_TOOL (align_tool);
align_tool->controls = NULL;
align_tool->selected_objects = NULL;
align_tool->align_type = GIMP_ALIGN_LEFT;
align_tool->horz_offset = 0;
align_tool->vert_offset = 0;
gimp_tool_control_set_snap_to (tool->control, FALSE);
gimp_tool_control_set_tool_cursor (tool->control, GIMP_TOOL_CURSOR_MOVE);
}
static GObject *
gimp_align_tool_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GimpTool *tool;
GimpAlignTool *align_tool;
GtkContainer *container;
GObject *options;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
tool = GIMP_TOOL (object);
align_tool = GIMP_ALIGN_TOOL (object);
options = G_OBJECT (gimp_tool_get_options (tool));
container = GTK_CONTAINER (g_object_get_data (options,
"controls-container"));
align_tool->controls = gimp_align_tool_controls (align_tool);
gtk_container_add (container, align_tool->controls);
gtk_widget_show (align_tool->controls);
return object;
}
static void
gimp_align_tool_finalize (GObject *object)
{
GimpTool *tool = GIMP_TOOL (object);
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (object);
if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (object)))
gimp_draw_tool_stop (GIMP_DRAW_TOOL (object));
if (gimp_tool_control_is_active (tool->control))
gimp_tool_control_halt (tool->control);
if (align_tool->controls)
{
gtk_widget_destroy (align_tool->controls);
align_tool->controls = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gimp_align_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error)
{
if (tool->display != display)
{
}
return TRUE;
}
static void
gimp_align_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (tool);
switch (action)
{
case GIMP_TOOL_ACTION_PAUSE:
case GIMP_TOOL_ACTION_RESUME:
break;
case GIMP_TOOL_ACTION_HALT:
clear_all_selected_objects (align_tool);
gimp_tool_pop_status (tool, display);
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, display);
}
static void
gimp_align_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (tool);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
/* If the tool was being used in another image...reset it */
if (display != tool->display)
{
if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (tool)))
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
clear_all_selected_objects (align_tool);
}
if (! gimp_tool_control_is_active (tool->control))
gimp_tool_control_activate (tool->control);
tool->display = display;
align_tool->x1 = align_tool->x0 = coords->x;
align_tool->y1 = align_tool->y0 = coords->y;
if (! gimp_draw_tool_is_active (GIMP_DRAW_TOOL (tool)))
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
/*
* some rather complex logic here. If the user clicks without modifiers,
* then we start a new list, and use the first object in it as reference.
* If the user clicks using Shift, or draws a rubber-band box, then
* we add objects to the list, but do not specify which one should
* be used as reference.
*/
static void
gimp_align_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (tool);
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (display->shell);
GObject *object = NULL;
GimpImage *image = display->image;
gint i;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
if (release_type == GIMP_BUTTON_RELEASE_CANCEL)
{
align_tool->x1 = align_tool->x0;
align_tool->y1 = align_tool->y0;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
return;
}
if (! (state & GDK_SHIFT_MASK)) /* start a new list */
{
clear_all_selected_objects (align_tool);
align_tool->set_reference = FALSE;
}
#define EPSILON 3
/* if mouse has moved less than EPSILON pixels since button press, select
the nearest thing, otherwise make a rubber-band rectangle */
if (hypot (coords->x - align_tool->x0, coords->y - align_tool->y0) < EPSILON)
{
GimpVectors *vectors;
GimpGuide *guide;
GimpLayer *layer;
gint snap_distance;
snap_distance =
GIMP_DISPLAY_CONFIG (display->image->gimp->config)->snap_distance;
if (gimp_draw_tool_on_vectors (GIMP_DRAW_TOOL (tool), display,
coords, snap_distance, snap_distance,
NULL, NULL, NULL, NULL, NULL,
&vectors))
{
object = G_OBJECT (vectors);
}
else if (gimp_display_shell_get_show_guides (shell) &&
(guide = gimp_image_find_guide (display->image,
coords->x, coords->y,
FUNSCALEX (shell, snap_distance),
FUNSCALEY (shell, snap_distance))))
{
object = G_OBJECT (guide);
}
else
{
if ((layer = select_layer_by_coords (display->image,
coords->x, coords->y)))
{
object = G_OBJECT (layer);
}
}
if (object)
{
if (! g_list_find (align_tool->selected_objects, object))
{
align_tool->selected_objects
= g_list_append (align_tool->selected_objects, object);
g_signal_connect (object, "removed",
G_CALLBACK (clear_selected_object),
(gpointer) align_tool);
/* if an object has been selected using unmodified click,
* it should be used as the reference
*/
if (! (state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK)))
align_tool->set_reference = TRUE;
}
}
}
else /* FIXME: look for vectors too */
{
gint X0 = MIN (coords->x, align_tool->x0);
gint X1 = MAX (coords->x, align_tool->x0);
gint Y0 = MIN (coords->y, align_tool->y0);
gint Y1 = MAX (coords->y, align_tool->y0);
GList *list;
for (list = GIMP_LIST (image->layers)->list;
list;
list = g_list_next (list))
{
GimpLayer *layer = list->data;
gint x0, y0, x1, y1;
if (! gimp_item_get_visible (GIMP_ITEM (layer)))
continue;
gimp_item_offsets (GIMP_ITEM (layer), &x0, &y0);
x1 = x0 + gimp_item_width (GIMP_ITEM (layer));
y1 = y0 + gimp_item_height (GIMP_ITEM (layer));
if (x0 < X0 || y0 < Y0 || x1 > X1 || y1 > Y1)
continue;
if (g_list_find (align_tool->selected_objects, layer))
continue;
align_tool->selected_objects
= g_list_append (align_tool->selected_objects, layer);
g_signal_connect (layer, "removed", G_CALLBACK (clear_selected_object),
(gpointer) align_tool);
}
}
for (i = 0; i < ALIGN_TOOL_NUM_BUTTONS; i++)
gtk_widget_set_sensitive (align_tool->button[i],
(align_tool->selected_objects != NULL));
align_tool->x1 = align_tool->x0;
align_tool->y1 = align_tool->y0;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_align_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (tool);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
align_tool->x1 = coords->x;
align_tool->y1 = coords->y;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_align_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (display->shell);
GimpCursorType cursor = GIMP_CURSOR_MOUSE;
GimpToolCursorType tool_cursor = GIMP_TOOL_CURSOR_MOVE;
GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_NONE;
gint snap_distance;
snap_distance =
GIMP_DISPLAY_CONFIG (display->image->gimp->config)->snap_distance;
if (gimp_draw_tool_on_vectors (GIMP_DRAW_TOOL (tool), display,
coords, snap_distance, snap_distance,
NULL, NULL, NULL, NULL, NULL, NULL))
{
tool_cursor = GIMP_TOOL_CURSOR_PATHS;
}
else if (gimp_display_shell_get_show_guides (shell) &&
(NULL != gimp_image_find_guide (display->image,
coords->x, coords->y,
FUNSCALEX (shell, snap_distance),
FUNSCALEY (shell, snap_distance))))
{
tool_cursor = GIMP_TOOL_CURSOR_MOVE;
}
else
{
GimpLayer *layer = select_layer_by_coords (display->image,
coords->x, coords->y);
if (layer)
{
tool_cursor = GIMP_TOOL_CURSOR_HAND;
}
}
gimp_tool_control_set_cursor (tool->control, cursor);
gimp_tool_control_set_tool_cursor (tool->control, tool_cursor);
gimp_tool_control_set_cursor_modifier (tool->control, modifier);
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static void
gimp_align_tool_draw (GimpDrawTool *draw_tool)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (draw_tool);
GList *list;
gint x, y, w, h;
/* draw rubber-band rectangle */
x = MIN (align_tool->x1, align_tool->x0);
y = MIN (align_tool->y1, align_tool->y0);
w = MAX (align_tool->x1, align_tool->x0) - x;
h = MAX (align_tool->y1, align_tool->y0) - y;
gimp_draw_tool_draw_rectangle (draw_tool,
FALSE,
x, y,w, h,
FALSE);
for (list = g_list_first (align_tool->selected_objects); list;
list = g_list_next (list))
{
if (GIMP_IS_ITEM (list->data))
{
GimpItem *item = GIMP_ITEM (list->data);
gimp_item_offsets (item, &x, &y);
w = gimp_item_width (item);
h = gimp_item_height (item);
gimp_draw_tool_draw_handle (draw_tool, GIMP_HANDLE_FILLED_SQUARE,
x, y, 4, 4,
GTK_ANCHOR_NORTH_WEST, FALSE);
gimp_draw_tool_draw_handle (draw_tool, GIMP_HANDLE_FILLED_SQUARE,
x + w, y, 4, 4,
GTK_ANCHOR_NORTH_EAST, FALSE);
gimp_draw_tool_draw_handle (draw_tool, GIMP_HANDLE_FILLED_SQUARE,
x, y + h, 4, 4,
GTK_ANCHOR_SOUTH_WEST, FALSE);
gimp_draw_tool_draw_handle (draw_tool, GIMP_HANDLE_FILLED_SQUARE,
x + w, y + h, 4, 4,
GTK_ANCHOR_SOUTH_EAST, FALSE);
}
else if (GIMP_IS_GUIDE (list->data))
{
GimpGuide *guide = GIMP_GUIDE (list->data);
GimpImage *image = GIMP_TOOL (draw_tool)->display->image;
gint x, y;
gint w, h;
switch (gimp_guide_get_orientation (guide))
{
case GIMP_ORIENTATION_VERTICAL:
x = gimp_guide_get_position (guide);
h = gimp_image_get_height (image);
gimp_draw_tool_draw_handle (draw_tool, GIMP_HANDLE_FILLED_SQUARE,
x, h, 4, 4,
GTK_ANCHOR_SOUTH, FALSE);
gimp_draw_tool_draw_handle (draw_tool, GIMP_HANDLE_FILLED_SQUARE,
x, 0, 4, 4,
GTK_ANCHOR_NORTH, FALSE);
break;
case GIMP_ORIENTATION_HORIZONTAL:
y = gimp_guide_get_position (guide);
w = gimp_image_get_width (image);
gimp_draw_tool_draw_handle (draw_tool, GIMP_HANDLE_FILLED_SQUARE,
w, y, 4, 4,
GTK_ANCHOR_EAST, FALSE);
gimp_draw_tool_draw_handle (draw_tool, GIMP_HANDLE_FILLED_SQUARE,
0, y, 4, 4,
GTK_ANCHOR_WEST, FALSE);
break;
default:
break;
}
}
}
}
static GtkWidget *
gimp_align_tool_controls (GimpAlignTool *align_tool)
{
GtkWidget *main_vbox;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *frame;
GtkWidget *label;
GtkWidget *button;
GtkWidget *spinbutton;
GtkWidget *combo;
gint n = 0;
main_vbox = gtk_vbox_new (FALSE, 12);
frame = gimp_frame_new (_("Align"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_vbox_new (FALSE, 6);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
hbox = gtk_hbox_new (FALSE, 6);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
label = gtk_label_new (_("Relative to:"));
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
combo = gimp_enum_combo_box_new (GIMP_TYPE_ALIGN_REFERENCE);
gtk_box_pack_start (GTK_BOX (hbox), combo, FALSE, FALSE, 0);
gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (combo),
GIMP_ALIGN_REFERENCE_FIRST,
G_CALLBACK (gimp_int_combo_box_get_active),
&align_tool->align_reference_type);
gtk_widget_show (combo);
hbox = gtk_hbox_new (FALSE, 6);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
button = button_with_stock (GIMP_ALIGN_LEFT, align_tool);
align_tool->button[n++] = button;
gimp_help_set_help_data (button, _("Align left edge of target"), NULL);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
button = button_with_stock (GIMP_ALIGN_HCENTER, align_tool);
align_tool->button[n++] = button;
gimp_help_set_help_data (button, _("Align center of target"), NULL);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
button = button_with_stock (GIMP_ALIGN_RIGHT, align_tool);
align_tool->button[n++] = button;
gimp_help_set_help_data (button, _("Align right edge of target"), NULL);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
hbox = gtk_hbox_new (FALSE, 6);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
button = button_with_stock (GIMP_ALIGN_TOP, align_tool);
align_tool->button[n++] = button;
gimp_help_set_help_data (button, _("Align top edge of target"), NULL);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
button = button_with_stock (GIMP_ALIGN_VCENTER, align_tool);
align_tool->button[n++] = button;
gimp_help_set_help_data (button, _("Align middle of target"), NULL);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
button = button_with_stock (GIMP_ALIGN_BOTTOM, align_tool);
align_tool->button[n++] = button;
gimp_help_set_help_data (button, _("Align bottom of target"), NULL);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
frame = gimp_frame_new (_("Distribute"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_vbox_new (FALSE, 6);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
hbox = gtk_hbox_new (FALSE, 6);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
button = button_with_stock (GIMP_ARRANGE_LEFT, align_tool);
align_tool->button[n++] = button;
gimp_help_set_help_data (button, _("Distribute left edges of targets"), NULL);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
button = button_with_stock (GIMP_ARRANGE_HCENTER, align_tool);
align_tool->button[n++] = button;
gimp_help_set_help_data (button,
_("Distribute horizontal centers of targets"), NULL);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
button = button_with_stock (GIMP_ARRANGE_RIGHT, align_tool);
align_tool->button[n++] = button;
gimp_help_set_help_data (button,
_("Distribute right edges of targets"), NULL);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
hbox = gtk_hbox_new (FALSE, 6);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
button = button_with_stock (GIMP_ARRANGE_TOP, align_tool);
align_tool->button[n++] = button;
gimp_help_set_help_data (button, _("Distribute top edges of targets"), NULL);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
button = button_with_stock (GIMP_ARRANGE_VCENTER, align_tool);
align_tool->button[n++] = button;
gimp_help_set_help_data (button,
_("Distribute vertical centers of targets"), NULL);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
button = button_with_stock (GIMP_ARRANGE_BOTTOM, align_tool);
align_tool->button[n++] = button;
gimp_help_set_help_data (button, _("Distribute bottoms of targets"), NULL);
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
hbox = gtk_hbox_new (FALSE, 6);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
label = gtk_label_new (_("Offset:"));
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
spinbutton = gimp_spin_button_new (&align_tool->horz_offset_adjustment,
0,
-100000.,
100000.,
1., 20., 20., 1., 0);
gtk_box_pack_start (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
g_signal_connect (align_tool->horz_offset_adjustment, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&align_tool->horz_offset);
gtk_widget_show (spinbutton);
return main_vbox;
}
static void
do_alignment (GtkWidget *widget,
gpointer data)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (data);
GimpAlignmentType action;
GimpImage *image;
GObject *reference_object = NULL;
GList *list;
gint offset;
image = GIMP_TOOL (align_tool)->display->image;
action = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (widget), "action"));
offset = align_tool->horz_offset;
switch (action)
{
case GIMP_ALIGN_LEFT:
case GIMP_ALIGN_HCENTER:
case GIMP_ALIGN_RIGHT:
case GIMP_ALIGN_TOP:
case GIMP_ALIGN_VCENTER:
case GIMP_ALIGN_BOTTOM:
offset = 0;
break;
case GIMP_ARRANGE_LEFT:
case GIMP_ARRANGE_HCENTER:
case GIMP_ARRANGE_RIGHT:
case GIMP_ARRANGE_TOP:
case GIMP_ARRANGE_VCENTER:
case GIMP_ARRANGE_BOTTOM:
offset = align_tool->horz_offset;
break;
}
/* if nothing is selected, just return */
if (g_list_length (align_tool->selected_objects) == 0)
return;
/* if only one object is selected, use the image as reference
* if multiple objects are selected, use the first one as reference if
* "set_reference" is TRUE, otherwise use NULL.
*/
list = align_tool->selected_objects;
switch (align_tool->align_reference_type)
{
case GIMP_ALIGN_REFERENCE_IMAGE:
reference_object = G_OBJECT (image);
break;
case GIMP_ALIGN_REFERENCE_FIRST:
if (g_list_length (align_tool->selected_objects) == 1)
{
reference_object = G_OBJECT (image);
}
else
{
if (align_tool->set_reference)
{
reference_object = G_OBJECT (align_tool->selected_objects->data);
list = g_list_next (align_tool->selected_objects);
}
else
{
reference_object = NULL;
}
}
break;
case GIMP_ALIGN_REFERENCE_SELECTION:
if (image->selection_mask)
{
reference_object = G_OBJECT (image->selection_mask);
}
else
return;
break;
case GIMP_ALIGN_REFERENCE_ACTIVE_LAYER:
if (image->active_layer)
reference_object = G_OBJECT (image->active_layer);
else
return;
break;
case GIMP_ALIGN_REFERENCE_ACTIVE_CHANNEL:
if (image->active_channel)
reference_object = G_OBJECT (image->active_channel);
else
return;
break;
case GIMP_ALIGN_REFERENCE_ACTIVE_PATH:
g_print ("reference = active path not yet handled.\n");
return;
break;
}
gimp_draw_tool_pause (GIMP_DRAW_TOOL (align_tool));
gimp_image_arrange_objects (image, list,
action,
reference_object,
action,
offset);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (align_tool));
gimp_image_flush (image);
}
static GtkWidget *
button_with_stock (GimpAlignmentType action,
GimpAlignTool *align_tool)
{
GtkWidget *button;
GtkWidget *image;
const gchar *stock_id = NULL;
switch (action)
{
case GIMP_ALIGN_LEFT:
stock_id = GIMP_STOCK_GRAVITY_WEST;
break;
case GIMP_ALIGN_HCENTER:
stock_id = GIMP_STOCK_HCENTER;
break;
case GIMP_ALIGN_RIGHT:
stock_id = GIMP_STOCK_GRAVITY_EAST;
break;
case GIMP_ALIGN_TOP:
stock_id = GIMP_STOCK_GRAVITY_NORTH;
break;
case GIMP_ALIGN_VCENTER:
stock_id = GIMP_STOCK_VCENTER;
break;
case GIMP_ALIGN_BOTTOM:
stock_id = GIMP_STOCK_GRAVITY_SOUTH;
break;
case GIMP_ARRANGE_LEFT:
stock_id = GIMP_STOCK_GRAVITY_WEST;
break;
case GIMP_ARRANGE_HCENTER:
stock_id = GIMP_STOCK_HCENTER;
break;
case GIMP_ARRANGE_RIGHT:
stock_id = GIMP_STOCK_GRAVITY_EAST;
break;
case GIMP_ARRANGE_TOP:
stock_id = GIMP_STOCK_GRAVITY_NORTH;
break;
case GIMP_ARRANGE_VCENTER:
stock_id = GIMP_STOCK_VCENTER;
break;
case GIMP_ARRANGE_BOTTOM:
stock_id = GIMP_STOCK_GRAVITY_SOUTH;
break;
default:
g_return_val_if_reached (NULL);
break;
}
button = gtk_button_new ();
g_object_set_data (G_OBJECT (button), "action", GINT_TO_POINTER (action));
image = gtk_image_new_from_stock (stock_id, GTK_ICON_SIZE_BUTTON);
gtk_misc_set_padding (GTK_MISC (image), 2, 2);
gtk_container_add (GTK_CONTAINER (button), image);
gtk_widget_show (image);
g_signal_connect (button, "clicked",
G_CALLBACK (do_alignment),
align_tool);
gtk_widget_set_sensitive (button, FALSE);
gtk_widget_show (button);
return button;
}
static void
clear_selected_object (GObject *object,
GimpAlignTool *align_tool)
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (align_tool));
if (align_tool->selected_objects)
g_signal_handlers_disconnect_by_func (object,
G_CALLBACK (clear_selected_object),
(gpointer) align_tool);
align_tool->selected_objects = g_list_remove (align_tool->selected_objects,
object);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (align_tool));
}
static void
clear_all_selected_objects (GimpAlignTool *align_tool)
{
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (align_tool);
if (gimp_draw_tool_is_active (draw_tool))
gimp_draw_tool_pause (draw_tool);
while (align_tool->selected_objects)
{
GObject *object = G_OBJECT (g_list_first (align_tool->selected_objects)->data);
g_signal_handlers_disconnect_by_func (object,
G_CALLBACK (clear_selected_object),
(gpointer) align_tool);
align_tool->selected_objects = g_list_remove (align_tool->selected_objects,
object);
}
if (gimp_draw_tool_is_active (draw_tool))
gimp_draw_tool_resume (draw_tool);
}
static GimpLayer *
select_layer_by_coords (GimpImage *image,
gint x,
gint y)
{
GList *list;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
for (list = GIMP_LIST (image->layers)->list;
list;
list = g_list_next (list))
{
GimpLayer *layer = list->data;
gint off_x, off_y;
gint width, height;
if (! gimp_item_get_visible (GIMP_ITEM (layer)))
continue;
gimp_item_offsets (GIMP_ITEM (layer), &off_x, &off_y);
width = gimp_item_width (GIMP_ITEM (layer));
height = gimp_item_height (GIMP_ITEM (layer));
if (off_x <= x &&
off_y <= y &&
x < off_x + width &&
y < off_y + height)
{
return layer;
}
}
return NULL;
}
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