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gimp/app/tools/gimpaligntool.c

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/* The GIMP -- an 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 "core/gimp.h"
#include "core/gimpimage.h"
#include "core/gimplayer.h"
#include "core/gimptoolinfo.h"
#include "core/gimpitem-align.h"
#include "display/gimpdisplay.h"
#include "widgets/gimphelp-ids.h"
#include "gimpdrawtool.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 void gimp_align_tool_dispose (GObject *object);
static gboolean gimp_align_tool_initialize (GimpTool *tool,
GimpDisplay *display);
static void gimp_align_tool_finalize (GObject *object);
static void gimp_align_tool_button_press (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 set_action (GtkWidget *widget,
gpointer data);
static void do_horizontal_alignment (GtkWidget *widget,
gpointer data);
static void do_vertical_alignment (GtkWidget *widget,
gpointer data);
static void clear_reference (GimpItem *reference_item,
GimpAlignTool *align_tool);
static void clear_target (GimpItem *target_item,
GimpAlignTool *align_tool);
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"),
_("Align layers & other items"),
N_("_Align"), "Q",
NULL, GIMP_HELP_TOOL_MOVE,
GIMP_STOCK_CENTER,
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;
object_class->dispose = gimp_align_tool_dispose;
tool_class->initialize = gimp_align_tool_initialize;
tool_class->button_press = gimp_align_tool_button_press;
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->target_item = NULL;
align_tool->reference_item = NULL;
align_tool->select_reference = FALSE;
align_tool->target_horz_align_type = GIMP_ALIGN_LEFT;
align_tool->ref_horz_align_type = GIMP_ALIGN_LEFT;
align_tool->target_vert_align_type = GIMP_ALIGN_TOP;
align_tool->ref_vert_align_type = GIMP_ALIGN_TOP;
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 *controls_container;
GObject *options;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
tool = GIMP_TOOL (object);
align_tool = GIMP_ALIGN_TOOL (object);
g_assert (GIMP_IS_TOOL_INFO (tool->tool_info));
options = G_OBJECT (tool->tool_info->tool_options);
controls_container = GTK_CONTAINER (g_object_get_data (options,
"controls-container"));
align_tool->controls = gimp_align_tool_controls (align_tool);
gtk_container_add (controls_container, align_tool->controls);
return object;
}
static void
gimp_align_tool_dispose (GObject *object)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (object);
if (align_tool->reference_item)
{
g_signal_handlers_disconnect_by_func (align_tool->reference_item,
G_CALLBACK (clear_reference),
(gpointer) align_tool);
align_tool->reference_item = NULL;
}
if (align_tool->target_item)
{
g_signal_handlers_disconnect_by_func (align_tool->target_item,
G_CALLBACK (clear_target),
(gpointer) align_tool);
align_tool->target_item = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose (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)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (tool);
if (tool->display != display)
{
/* align_tool->target_item = NULL; */
/* align_tool->reference_item = NULL; */
}
return TRUE;
}
static void
gimp_align_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpAlignTool *align_tool = GIMP_ALIGN_TOOL (tool);
GimpAlignOptions *options = GIMP_ALIGN_OPTIONS (tool->tool_info->tool_options);
GimpItem *item = NULL;
/* 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));
align_tool->target_item = NULL;
align_tool->reference_item = NULL;
}
if (! gimp_tool_control_is_active (tool->control))
gimp_tool_control_activate (tool->control);
tool->display = display;
if (! gimp_draw_tool_is_active (GIMP_DRAW_TOOL (tool)))
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
if (options->align_type == GIMP_TRANSFORM_TYPE_PATH)
{
GimpVectors *vectors;
if (gimp_draw_tool_on_vectors (GIMP_DRAW_TOOL (tool), display,
coords, 7, 7,
NULL, NULL, NULL, NULL, NULL,
&vectors))
{
item = GIMP_ITEM (vectors);
}
}
else if (options->align_type == GIMP_TRANSFORM_TYPE_LAYER)
{
GimpLayer *layer;
if ((layer = gimp_image_pick_correlate_layer (display->image,
coords->x, coords->y)))
{
item = GIMP_ITEM (layer);
}
}
if (item)
{
if (state & GDK_CONTROL_MASK || align_tool->select_reference)
{
if (align_tool->reference_item)
g_signal_handlers_disconnect_by_func (align_tool->reference_item,
G_CALLBACK (clear_reference),
(gpointer) align_tool);
align_tool->reference_item = item;
g_signal_connect (item, "removed",
G_CALLBACK (clear_reference), (gpointer) align_tool);
}
else
{
if (align_tool->target_item)
g_signal_handlers_disconnect_by_func (align_tool->target_item,
G_CALLBACK (clear_target),
(gpointer) align_tool);
align_tool->target_item = item;
g_signal_connect (item, "removed",
G_CALLBACK (clear_target), (gpointer) align_tool);
}
}
if (align_tool->target_item)
{
gint i;
for (i = 0; i < ALIGN_TOOL_NUM_BUTTONS; i++)
gtk_widget_set_sensitive (align_tool->button[i], TRUE);
}
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
gimp_align_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
GimpAlignOptions *options = GIMP_ALIGN_OPTIONS (tool->tool_info->tool_options);
GimpCursorType cursor = GIMP_CURSOR_BAD;
GimpToolCursorType tool_cursor = GIMP_TOOL_CURSOR_MOVE;
GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_NONE;
if (options->align_type == GIMP_TRANSFORM_TYPE_PATH)
{
tool_cursor = GIMP_TOOL_CURSOR_PATHS;
modifier = GIMP_CURSOR_MODIFIER_MOVE;
if (gimp_draw_tool_on_vectors (GIMP_DRAW_TOOL (tool), display,
coords, 7, 7,
NULL, NULL, NULL, NULL, NULL, NULL))
{
cursor = GIMP_CURSOR_MOUSE;
tool_cursor = GIMP_TOOL_CURSOR_HAND;
}
}
else
{
GimpLayer *layer;
if ((layer = gimp_image_pick_correlate_layer (display->image,
coords->x, coords->y)))
{
/* if there is a floating selection, and this aint it... */
if (gimp_image_floating_sel (display->image) &&
! gimp_layer_is_floating_sel (layer))
{
cursor = GIMP_CURSOR_MOUSE;
tool_cursor = GIMP_TOOL_CURSOR_MOVE;
modifier = GIMP_CURSOR_MODIFIER_ANCHOR;
}
else if (layer == gimp_image_get_active_layer (display->image))
{
cursor = GIMP_CURSOR_MOUSE;
}
else
{
cursor = GIMP_CURSOR_MOUSE;
tool_cursor = GIMP_TOOL_CURSOR_HAND;
modifier = GIMP_CURSOR_MODIFIER_MOVE;
}
}
}
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 = GIMP_ALIGN_TOOL (draw_tool);
GimpItem *item;
if ((item = align->target_item))
{
gimp_draw_tool_draw_rectangle (draw_tool, FALSE,
item->offset_x + 1, item->offset_y + 1,
item->width - 2, item->height - 2,
FALSE);
}
if ((item = align->reference_item))
{
gimp_draw_tool_draw_rectangle (draw_tool, FALSE,
item->offset_x, item->offset_y,
item->width, item->height,
FALSE);
gimp_draw_tool_draw_dashed_line (draw_tool,
item->offset_x,
item->offset_y,
item->offset_x + item->width,
item->offset_y + item->height,
FALSE);
gimp_draw_tool_draw_dashed_line (draw_tool,
item->offset_x,
item->offset_y + item->height,
item->offset_x + item->width,
item->offset_y,
FALSE);
}
}
static GtkWidget *
gimp_align_tool_controls (GimpAlignTool *align_tool)
{
GtkWidget *main_vbox;
GtkWidget *vbox2;
GtkWidget *hbox;
GtkWidget *hbox2;
GtkWidget *table;
GtkWidget *label;
GtkWidget *button;
GtkWidget *spinbutton;
gint row, col, n;
hbox = gtk_hbox_new (FALSE, 0);
main_vbox = gtk_vbox_new (FALSE, 4);
gtk_box_pack_start (GTK_BOX (hbox), main_vbox, FALSE, FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 4);
gtk_widget_show (main_vbox);
vbox2 = gimp_int_radio_group_new (FALSE, NULL,
G_CALLBACK (gimp_radio_button_update),
&align_tool->select_reference, FALSE,
_("Select target"),
FALSE, NULL,
_("Select reference (Ctrl)"),
TRUE, NULL,
NULL);
gtk_box_pack_start (GTK_BOX (main_vbox), vbox2, FALSE, FALSE, 0);
gtk_widget_show (vbox2);
table = gtk_table_new (7, 9, FALSE);
gtk_box_pack_start (GTK_BOX (main_vbox), table, FALSE, FALSE, 5);
gtk_widget_show (table);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_table_set_col_spacing (GTK_TABLE (table), 0, 10);
row = col = 0;
/* Top row */
hbox2 = gtk_hbox_new (FALSE, 0);
gtk_table_attach_defaults (GTK_TABLE (table), hbox2, 0, 8, row, row + 1);
gtk_widget_show (hbox2);
label = gtk_label_new (_("Horizontal"));
gtk_box_pack_start (GTK_BOX (hbox2), label, FALSE, FALSE, 0);
gtk_widget_show (label);
row++;
/* second row */
col = 1;
n = 0;
button = button_with_stock (GIMP_ALIGN_LEFT, align_tool);
gtk_table_attach_defaults (GTK_TABLE (table), button, col, col + 2, row, row + 1);
gimp_help_set_help_data (button, _("Align left edge of target"), NULL);
align_tool->button[n++] = button;
++col;
++col;
button = button_with_stock (GIMP_ALIGN_CENTER, align_tool);
gtk_table_attach_defaults (GTK_TABLE (table), button, col, col + 2, row, row + 1);
gimp_help_set_help_data (button, _("Align center of target"), NULL);
align_tool->button[n++] = button;
++col;
++col;
button = button_with_stock (GIMP_ALIGN_RIGHT, align_tool);
gtk_table_attach_defaults (GTK_TABLE (table), button, col, col + 2, row, row + 1);
gimp_help_set_help_data (button, _("Align right edge of target"), NULL);
align_tool->button[n++] = button;
++col;
++col;
row++;
/* next row */
label = gtk_label_new (_("Offset:"));
gtk_table_attach_defaults (GTK_TABLE (table), label, 1, 3, row, row + 1);
gtk_widget_show (label);
spinbutton = gimp_spin_button_new (&align_tool->horz_offset_adjustment,
0,
-100000.,
100000.,
1., 20., 20., 1., 0);
gtk_table_attach_defaults (GTK_TABLE (table), spinbutton, 3, 7, row, row + 1);
g_signal_connect (align_tool->horz_offset_adjustment, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&align_tool->horz_offset);
gtk_widget_show (spinbutton);
row++;
hbox2 = gtk_hbox_new (FALSE, 0);
gtk_table_attach_defaults (GTK_TABLE (table), hbox2, 0, 8, row, row + 1);
gtk_widget_show (hbox2);
label = gtk_label_new (_("Vertical"));
gtk_box_pack_start (GTK_BOX (hbox2), label, FALSE, FALSE, 0);
gtk_widget_show (label);
row++;
/* second row */
col = 1;
button = button_with_stock (GIMP_ALIGN_TOP, align_tool);
gtk_table_attach_defaults (GTK_TABLE (table), button, col, col + 2, row, row + 1);
gimp_help_set_help_data (button, _("Align top edge of target"), NULL);
align_tool->button[n++] = button;
++col;
++col;
button = button_with_stock (GIMP_ALIGN_MIDDLE, align_tool);
gtk_table_attach_defaults (GTK_TABLE (table), button, col, col + 2, row, row + 1);
gimp_help_set_help_data (button, _("Align middle of target"), NULL);
align_tool->button[n++] = button;
++col;
++col;
button = button_with_stock (GIMP_ALIGN_BOTTOM, align_tool);
gtk_table_attach_defaults (GTK_TABLE (table), button, col, col + 2, row, row + 1);
gimp_help_set_help_data (button, _("Align bottom of target"), NULL);
align_tool->button[n++] = button;
++col;
++col;
row++;
/* next row */
label = gtk_label_new (_("Offset:"));
gtk_table_attach_defaults (GTK_TABLE (table), label, 1, 3, row, row + 1);
gtk_widget_show (label);
spinbutton = gimp_spin_button_new (&align_tool->vert_offset_adjustment,
0,
-100000.,
100000.,
1., 20., 20., 1., 0);
gtk_table_attach_defaults (GTK_TABLE (table), spinbutton, 3, 7, row, row + 1);
g_signal_connect (align_tool->vert_offset_adjustment, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&align_tool->vert_offset);
gtk_widget_show (spinbutton);
gtk_widget_show (hbox);
return hbox;
}
static void
do_horizontal_alignment (GtkWidget *widget,
gpointer data)
{
GimpAlignTool *align_tool = data;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (align_tool));
if (align_tool->target_item)
gimp_item_align (align_tool->target_item,
align_tool->target_horz_align_type,
align_tool->reference_item,
align_tool->ref_horz_align_type,
align_tool->horz_offset);
if (GIMP_TOOL (align_tool)->display)
gimp_image_flush (GIMP_TOOL (align_tool)->display->image);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (align_tool));
}
static void
do_vertical_alignment (GtkWidget *widget,
gpointer data)
{
GimpAlignTool *align_tool = data;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (align_tool));
if (align_tool->target_item)
gimp_item_align (align_tool->target_item,
align_tool->target_vert_align_type,
align_tool->reference_item,
align_tool->ref_vert_align_type,
align_tool->vert_offset);
if (GIMP_TOOL (align_tool)->display)
gimp_image_flush (GIMP_TOOL (align_tool)->display->image);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (align_tool));
}
static GtkWidget *
button_with_stock (GimpAlignmentType action,
GimpAlignTool *align_tool)
{
GtkWidget *button;
gchar *stock_id;
switch (action)
{
case GIMP_ALIGN_LEFT:
stock_id = GIMP_STOCK_GRAVITY_WEST;
break;
case GIMP_ALIGN_CENTER:
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_MIDDLE:
stock_id = GIMP_STOCK_VCENTER;
break;
case GIMP_ALIGN_BOTTOM:
stock_id = GIMP_STOCK_GRAVITY_SOUTH;
break;
default:
stock_id = "?";
break;
}
button = gtk_button_new_from_stock (stock_id);
g_object_set_data (G_OBJECT (button), "action", GINT_TO_POINTER (action));
g_signal_connect (button, "pressed",
G_CALLBACK (set_action),
align_tool);
gtk_widget_set_sensitive (button, FALSE);
gtk_widget_show (button);
return button;
}
static void
set_action (GtkWidget *widget,
gpointer data)
{
GimpAlignTool *align_tool = data;
GimpAlignmentType action;
action = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (widget), "action"));
switch (action)
{
case GIMP_ALIGN_LEFT:
case GIMP_ALIGN_CENTER:
case GIMP_ALIGN_RIGHT:
align_tool->ref_horz_align_type = action;
align_tool->target_horz_align_type = action;
do_horizontal_alignment (widget, data);
break;
case GIMP_ALIGN_TOP:
case GIMP_ALIGN_MIDDLE:
case GIMP_ALIGN_BOTTOM:
align_tool->ref_vert_align_type = action;
align_tool->target_vert_align_type = action;
do_vertical_alignment (widget, data);
break;
default:
break;
}
}
static void
clear_target (GimpItem *target_item,
GimpAlignTool *align_tool)
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (align_tool));
if (align_tool->target_item)
g_signal_handlers_disconnect_by_func (align_tool->target_item,
G_CALLBACK (clear_target),
(gpointer) align_tool);
align_tool->target_item = NULL;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (align_tool));
}
static void
clear_reference (GimpItem *reference_item,
GimpAlignTool *align_tool)
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (align_tool));
if (align_tool->reference_item)
g_signal_handlers_disconnect_by_func (align_tool->reference_item,
G_CALLBACK (clear_reference),
(gpointer) align_tool);
align_tool->reference_item = NULL;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (align_tool));
}
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