Gimp/app/tools/gimpmeasuretool.c
Ell 9a77dc75a4 Issue #1850 - Undoing the "straighten" operation in the Measure tool ...
... does not restore the measure points

Halt the measure tool after straightening, thus removing the
expectation that undoing the operation should restore the original
points.

Halting the tool, rather than making undo work "as expected",
sidesteps several issues:

  - Implementing undo correctly is tricky, since image-undo and
    tool-undo are handled separately.

  - In fact, the measure tool doesn't provide tool-undo, so that
    image edits can be undone while the tool is active without
    affecting the tool, and it's not clear that we want to change
    this behavior.  However, this makes undoing a straighten
    operation a special case, and it's not entirely clear what the
    behavior should be when undoing other kinds of transformations,
    or when the measure points had changed since the straighten
    operation.

  - Perhaps most importantly, measure tool points are restricted to
    the pixel grid, which means that when measuring an angle
    against an orientation that's not fully horizontal or vertical
    in image space (either using a 3-point angle, or when the
    canvas is rotated), the resulting transformed point after
    straightening doesn't generally land on the pixel grid, causing
    it to be rounded, which can result in a non-zero angle after
    the rotation.  This is especially ugly, since clicking
    "straighten" again at this point would cause another non-
    trivial rotation.

(cherry picked from commit 2e08c9164a)
2018-07-16 01:21:48 -04:00

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* Measure tool
* Copyright (C) 1999-2003 Sven Neumann <sven@gimp.org>
*
* 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 <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/gimpimage.h"
#include "core/gimpimage-guides.h"
#include "core/gimpimage-undo.h"
#include "core/gimpimage-undo-push.h"
#include "core/gimpprogress.h"
#include "core/gimp-transform-utils.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimpwidgets-utils.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpdisplayshell-appearance.h"
#include "display/gimptoolcompass.h"
#include "display/gimptoolgui.h"
#include "gimpmeasureoptions.h"
#include "gimpmeasuretool.h"
#include "gimptoolcontrol.h"
#include "gimp-intl.h"
/* local function prototypes */
static void gimp_measure_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display);
static void gimp_measure_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display);
static void gimp_measure_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display);
static void gimp_measure_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display);
static void gimp_measure_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static void gimp_measure_tool_recalc_matrix (GimpTransformTool *tr_tool);
static gchar * gimp_measure_tool_get_undo_desc (GimpTransformTool *tr_tool);
static void gimp_measure_tool_compass_changed (GimpToolWidget *widget,
GimpMeasureTool *measure);
static void gimp_measure_tool_compass_response(GimpToolWidget *widget,
gint response_id,
GimpMeasureTool *measure);
static void gimp_measure_tool_compass_status (GimpToolWidget *widget,
const gchar *status,
GimpMeasureTool *measure);
static void gimp_measure_tool_compass_create_guides
(GimpToolWidget *widget,
gint x,
gint y,
gboolean horizontal,
gboolean vertical,
GimpMeasureTool *measure);
static void gimp_measure_tool_start (GimpMeasureTool *measure,
GimpDisplay *display,
const GimpCoords *coords);
static void gimp_measure_tool_halt (GimpMeasureTool *measure);
static GimpToolGui * gimp_measure_tool_dialog_new (GimpMeasureTool *measure);
static void gimp_measure_tool_dialog_update (GimpMeasureTool *measure,
GimpDisplay *display);
static void gimp_measure_tool_straighten_button_clicked
(GtkWidget *button,
GimpMeasureTool *measure);
G_DEFINE_TYPE (GimpMeasureTool, gimp_measure_tool, GIMP_TYPE_TRANSFORM_TOOL)
#define parent_class gimp_measure_tool_parent_class
void
gimp_measure_tool_register (GimpToolRegisterCallback callback,
gpointer data)
{
(* callback) (GIMP_TYPE_MEASURE_TOOL,
GIMP_TYPE_MEASURE_OPTIONS,
gimp_measure_options_gui,
0,
"gimp-measure-tool",
_("Measure"),
_("Measure Tool: Measure distances and angles"),
N_("_Measure"), "<shift>M",
NULL, GIMP_HELP_TOOL_MEASURE,
GIMP_ICON_TOOL_MEASURE,
data);
}
static void
gimp_measure_tool_class_init (GimpMeasureToolClass *klass)
{
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
GimpTransformToolClass *tr_class = GIMP_TRANSFORM_TOOL_CLASS (klass);
tool_class->control = gimp_measure_tool_control;
tool_class->modifier_key = gimp_measure_tool_modifier_key;
tool_class->button_press = gimp_measure_tool_button_press;
tool_class->button_release = gimp_measure_tool_button_release;
tool_class->motion = gimp_measure_tool_motion;
tr_class->recalc_matrix = gimp_measure_tool_recalc_matrix;
tr_class->get_undo_desc = gimp_measure_tool_get_undo_desc;
tr_class->progress_text = _("Straightening");
}
static void
gimp_measure_tool_init (GimpMeasureTool *measure)
{
GimpTool *tool = GIMP_TOOL (measure);
gimp_tool_control_set_handle_empty_image (tool->control, TRUE);
gimp_tool_control_set_active_modifiers (tool->control,
GIMP_TOOL_ACTIVE_MODIFIERS_SEPARATE);
gimp_tool_control_set_precision (tool->control,
GIMP_CURSOR_PRECISION_PIXEL_BORDER);
gimp_tool_control_set_cursor (tool->control,
GIMP_CURSOR_CROSSHAIR_SMALL);
gimp_tool_control_set_tool_cursor (tool->control,
GIMP_TOOL_CURSOR_MEASURE);
gimp_draw_tool_set_default_status (GIMP_DRAW_TOOL (tool),
_("Click-Drag to create a line"));
}
static void
gimp_measure_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display)
{
GimpMeasureTool *measure = GIMP_MEASURE_TOOL (tool);
switch (action)
{
case GIMP_TOOL_ACTION_PAUSE:
case GIMP_TOOL_ACTION_RESUME:
break;
case GIMP_TOOL_ACTION_HALT:
gimp_measure_tool_halt (measure);
break;
case GIMP_TOOL_ACTION_COMMIT:
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, display);
}
static void
gimp_measure_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display)
{
GimpMeasureOptions *options = GIMP_MEASURE_TOOL_GET_OPTIONS (tool);
if (key == gimp_get_toggle_behavior_mask ())
{
switch (options->orientation)
{
case GIMP_COMPASS_ORIENTATION_HORIZONTAL:
g_object_set (options,
"orientation", GIMP_COMPASS_ORIENTATION_VERTICAL,
NULL);
break;
case GIMP_COMPASS_ORIENTATION_VERTICAL:
g_object_set (options,
"orientation", GIMP_COMPASS_ORIENTATION_HORIZONTAL,
NULL);
break;
default:
break;
}
}
}
static void
gimp_measure_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display)
{
GimpMeasureTool *measure = GIMP_MEASURE_TOOL (tool);
GimpMeasureOptions *options = GIMP_MEASURE_TOOL_GET_OPTIONS (tool);
GimpDisplayShell *shell = gimp_display_get_shell (display);
GimpImage *image = gimp_display_get_image (display);
if (tool->display && display != tool->display)
gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, tool->display);
if (! measure->widget)
{
measure->supress_guides = TRUE;
gimp_measure_tool_start (measure, display, coords);
gimp_tool_widget_hover (measure->widget, coords, state, TRUE);
}
if (gimp_tool_widget_button_press (measure->widget, coords, time, state,
press_type))
{
measure->grab_widget = measure->widget;
}
/* create the info window if necessary */
if (! measure->gui)
{
if (options->use_info_window ||
! gimp_display_shell_get_show_statusbar (shell))
{
measure->gui = gimp_measure_tool_dialog_new (measure);
g_object_add_weak_pointer (G_OBJECT (measure->gui),
(gpointer) &measure->gui);
}
}
if (measure->gui)
{
gimp_tool_gui_set_shell (measure->gui, shell);
gimp_tool_gui_set_viewable (measure->gui, GIMP_VIEWABLE (image));
gimp_measure_tool_dialog_update (measure, display);
}
gimp_tool_control_activate (tool->control);
}
static void
gimp_measure_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display)
{
GimpMeasureTool *measure = GIMP_MEASURE_TOOL (tool);
gimp_tool_control_halt (tool->control);
if (measure->grab_widget)
{
gimp_tool_widget_button_release (measure->grab_widget,
coords, time, state, release_type);
measure->grab_widget = NULL;
}
measure->supress_guides = FALSE;
}
static void
gimp_measure_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpMeasureTool *measure = GIMP_MEASURE_TOOL (tool);
if (measure->grab_widget)
{
gimp_tool_widget_motion (measure->grab_widget, coords, time, state);
}
}
static void
gimp_measure_tool_recalc_matrix (GimpTransformTool *tr_tool)
{
GimpMeasureTool *measure = GIMP_MEASURE_TOOL (tr_tool);
gdouble angle;
if (measure->n_points < 2)
{
tr_tool->transform_valid = FALSE;
return;
}
g_object_get (measure->widget,
"pixel-angle", &angle,
NULL);
gimp_matrix3_identity (&tr_tool->transform);
gimp_transform_matrix_rotate_center (&tr_tool->transform,
measure->x[0], measure->y[0],
angle);
tr_tool->transform_valid = TRUE;
}
static gchar *
gimp_measure_tool_get_undo_desc (GimpTransformTool *tr_tool)
{
return g_strdup (_("Straighten"));
}
static void
gimp_measure_tool_compass_changed (GimpToolWidget *widget,
GimpMeasureTool *measure)
{
GimpMeasureOptions *options = GIMP_MEASURE_TOOL_GET_OPTIONS (measure);
g_object_get (widget,
"n-points", &measure->n_points,
"x1", &measure->x[0],
"y1", &measure->y[0],
"x2", &measure->x[1],
"y2", &measure->y[1],
"x3", &measure->x[2],
"y3", &measure->y[2],
NULL);
gtk_widget_set_sensitive (options->straighten_button, measure->n_points >= 2);
gimp_measure_tool_dialog_update (measure, GIMP_TOOL (measure)->display);
}
static void
gimp_measure_tool_compass_response (GimpToolWidget *widget,
gint response_id,
GimpMeasureTool *measure)
{
GimpTool *tool = GIMP_TOOL (measure);
if (response_id == GIMP_TOOL_WIDGET_RESPONSE_CANCEL)
gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, tool->display);
}
static void
gimp_measure_tool_compass_status (GimpToolWidget *widget,
const gchar *status,
GimpMeasureTool *measure)
{
GimpTool *tool = GIMP_TOOL (measure);
if (! status)
{
/* replace status bar hint by distance and angle */
gimp_measure_tool_dialog_update (measure, tool->display);
}
}
static void
gimp_measure_tool_compass_create_guides (GimpToolWidget *widget,
gint x,
gint y,
gboolean horizontal,
gboolean vertical,
GimpMeasureTool *measure)
{
GimpDisplay *display = GIMP_TOOL (measure)->display;
GimpImage *image = gimp_display_get_image (display);
if (measure->supress_guides)
return;
if (x < 0 || x > gimp_image_get_width (image))
vertical = FALSE;
if (y < 0 || y > gimp_image_get_height (image))
horizontal = FALSE;
if (horizontal || vertical)
{
if (horizontal && vertical)
gimp_image_undo_group_start (image,
GIMP_UNDO_GROUP_GUIDE,
_("Add Guides"));
if (horizontal)
gimp_image_add_hguide (image, y, TRUE);
if (vertical)
gimp_image_add_vguide (image, x, TRUE);
if (horizontal && vertical)
gimp_image_undo_group_end (image);
gimp_image_flush (image);
}
}
static void
gimp_measure_tool_start (GimpMeasureTool *measure,
GimpDisplay *display,
const GimpCoords *coords)
{
GimpTool *tool = GIMP_TOOL (measure);
GimpDisplayShell *shell = gimp_display_get_shell (display);
GimpMeasureOptions *options = GIMP_MEASURE_TOOL_GET_OPTIONS (tool);
measure->n_points = 1;
measure->x[0] = coords->x;
measure->y[0] = coords->y;
measure->x[1] = 0;
measure->y[1] = 0;
measure->x[2] = 0;
measure->y[2] = 0;
measure->widget = gimp_tool_compass_new (shell,
options->orientation,
measure->n_points,
measure->x[0],
measure->y[0],
measure->x[1],
measure->y[1],
measure->x[2],
measure->y[2]);
gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (tool), measure->widget);
g_object_bind_property (options, "orientation",
measure->widget, "orientation",
G_BINDING_DEFAULT);
g_signal_connect (measure->widget, "changed",
G_CALLBACK (gimp_measure_tool_compass_changed),
measure);
g_signal_connect (measure->widget, "response",
G_CALLBACK (gimp_measure_tool_compass_response),
measure);
g_signal_connect (measure->widget, "status",
G_CALLBACK (gimp_measure_tool_compass_status),
measure);
g_signal_connect (measure->widget, "create-guides",
G_CALLBACK (gimp_measure_tool_compass_create_guides),
measure);
g_signal_connect (options->straighten_button, "clicked",
G_CALLBACK (gimp_measure_tool_straighten_button_clicked),
measure);
tool->display = display;
gimp_draw_tool_start (GIMP_DRAW_TOOL (measure), display);
}
static void
gimp_measure_tool_halt (GimpMeasureTool *measure)
{
GimpMeasureOptions *options = GIMP_MEASURE_TOOL_GET_OPTIONS (measure);
GimpTool *tool = GIMP_TOOL (measure);
gtk_widget_set_sensitive (options->straighten_button, FALSE);
if (tool->display)
gimp_tool_pop_status (tool, tool->display);
if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (measure)))
gimp_draw_tool_stop (GIMP_DRAW_TOOL (measure));
g_signal_handlers_disconnect_by_func (
options->straighten_button,
G_CALLBACK (gimp_measure_tool_straighten_button_clicked),
measure);
gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (tool), NULL);
g_clear_object (&measure->widget);
g_clear_object (&measure->gui);
tool->display = NULL;
}
static void
gimp_measure_tool_dialog_update (GimpMeasureTool *measure,
GimpDisplay *display)
{
GimpDisplayShell *shell = gimp_display_get_shell (display);
GimpImage *image = gimp_display_get_image (display);
gint ax, ay;
gint bx, by;
gint pixel_width;
gint pixel_height;
gdouble unit_width;
gdouble unit_height;
gdouble pixel_distance;
gdouble unit_distance;
gdouble inch_distance;
gdouble pixel_angle;
gdouble unit_angle;
gdouble xres;
gdouble yres;
gchar format[128];
gint unit_distance_digits = 0;
gint unit_width_digits;
gint unit_height_digits;
/* calculate distance and angle */
ax = measure->x[1] - measure->x[0];
ay = measure->y[1] - measure->y[0];
if (measure->n_points == 3)
{
bx = measure->x[2] - measure->x[0];
by = measure->y[2] - measure->y[0];
}
else
{
bx = 0;
by = 0;
}
pixel_width = ABS (ax - bx);
pixel_height = ABS (ay - by);
gimp_image_get_resolution (image, &xres, &yres);
unit_width = gimp_pixels_to_units (pixel_width, shell->unit, xres);
unit_height = gimp_pixels_to_units (pixel_height, shell->unit, yres);
pixel_distance = sqrt (SQR (ax - bx) + SQR (ay - by));
inch_distance = sqrt (SQR ((gdouble) (ax - bx) / xres) +
SQR ((gdouble) (ay - by) / yres));
unit_distance = gimp_unit_get_factor (shell->unit) * inch_distance;
g_object_get (measure->widget,
"pixel-angle", &pixel_angle,
"unit-angle", &unit_angle,
NULL);
pixel_angle = fabs (pixel_angle * 180.0 / G_PI);
unit_angle = fabs (unit_angle * 180.0 / G_PI);
/* Compute minimum digits to display accurate values, so that
* every pixel shows a different value in unit.
*/
if (inch_distance)
unit_distance_digits = gimp_unit_get_scaled_digits (shell->unit,
pixel_distance /
inch_distance);
unit_width_digits = gimp_unit_get_scaled_digits (shell->unit, xres);
unit_height_digits = gimp_unit_get_scaled_digits (shell->unit, yres);
if (shell->unit == GIMP_UNIT_PIXEL)
{
gimp_tool_replace_status (GIMP_TOOL (measure), display,
"%.1f %s, %.2f\302\260 (%d × %d)",
pixel_distance, _("pixels"), pixel_angle,
pixel_width, pixel_height);
}
else
{
g_snprintf (format, sizeof (format),
"%%.%df %s, %%.2f\302\260 (%%.%df × %%.%df)",
unit_distance_digits,
gimp_unit_get_plural (shell->unit),
unit_width_digits,
unit_height_digits);
gimp_tool_replace_status (GIMP_TOOL (measure), display, format,
unit_distance, unit_angle,
unit_width, unit_height);
}
if (measure->gui)
{
gchar buf[128];
/* Distance */
g_snprintf (buf, sizeof (buf), "%.1f", pixel_distance);
gtk_label_set_text (GTK_LABEL (measure->distance_label[0]), buf);
if (shell->unit != GIMP_UNIT_PIXEL)
{
g_snprintf (format, sizeof (format), "%%.%df",
unit_distance_digits);
g_snprintf (buf, sizeof (buf), format, unit_distance);
gtk_label_set_text (GTK_LABEL (measure->distance_label[1]), buf);
gtk_label_set_text (GTK_LABEL (measure->unit_label[0]),
gimp_unit_get_plural (shell->unit));
}
else
{
gtk_label_set_text (GTK_LABEL (measure->distance_label[1]), NULL);
gtk_label_set_text (GTK_LABEL (measure->unit_label[0]), NULL);
}
/* Angle */
g_snprintf (buf, sizeof (buf), "%.2f", pixel_angle);
gtk_label_set_text (GTK_LABEL (measure->angle_label[0]), buf);
if (fabs (unit_angle - pixel_angle) > 0.01)
{
g_snprintf (buf, sizeof (buf), "%.2f", unit_angle);
gtk_label_set_text (GTK_LABEL (measure->angle_label[1]), buf);
gtk_label_set_text (GTK_LABEL (measure->unit_label[1]), "\302\260");
}
else
{
gtk_label_set_text (GTK_LABEL (measure->angle_label[1]), NULL);
gtk_label_set_text (GTK_LABEL (measure->unit_label[1]), NULL);
}
/* Width */
g_snprintf (buf, sizeof (buf), "%d", pixel_width);
gtk_label_set_text (GTK_LABEL (measure->width_label[0]), buf);
if (shell->unit != GIMP_UNIT_PIXEL)
{
g_snprintf (format, sizeof (format), "%%.%df",
unit_width_digits);
g_snprintf (buf, sizeof (buf), format, unit_width);
gtk_label_set_text (GTK_LABEL (measure->width_label[1]), buf);
gtk_label_set_text (GTK_LABEL (measure->unit_label[2]),
gimp_unit_get_plural (shell->unit));
}
else
{
gtk_label_set_text (GTK_LABEL (measure->width_label[1]), NULL);
gtk_label_set_text (GTK_LABEL (measure->unit_label[2]), NULL);
}
g_snprintf (buf, sizeof (buf), "%d", pixel_height);
gtk_label_set_text (GTK_LABEL (measure->height_label[0]), buf);
/* Height */
if (shell->unit != GIMP_UNIT_PIXEL)
{
g_snprintf (format, sizeof (format), "%%.%df",
unit_height_digits);
g_snprintf (buf, sizeof (buf), format, unit_height);
gtk_label_set_text (GTK_LABEL (measure->height_label[1]), buf);
gtk_label_set_text (GTK_LABEL (measure->unit_label[3]),
gimp_unit_get_plural (shell->unit));
}
else
{
gtk_label_set_text (GTK_LABEL (measure->height_label[1]), NULL);
gtk_label_set_text (GTK_LABEL (measure->unit_label[3]), NULL);
}
gimp_tool_gui_show (measure->gui);
}
}
static GimpToolGui *
gimp_measure_tool_dialog_new (GimpMeasureTool *measure)
{
GimpTool *tool = GIMP_TOOL (measure);
GimpDisplayShell *shell;
GimpToolGui *gui;
GtkWidget *table;
GtkWidget *label;
g_return_val_if_fail (tool->display != NULL, NULL);
shell = gimp_display_get_shell (tool->display);
gui = gimp_tool_gui_new (tool->tool_info,
NULL,
_("Measure Distances and Angles"),
NULL, NULL,
gtk_widget_get_screen (GTK_WIDGET (shell)),
gimp_widget_get_monitor (GTK_WIDGET (shell)),
TRUE,
_("_Close"), GTK_RESPONSE_CLOSE,
NULL);
gimp_tool_gui_set_auto_overlay (gui, TRUE);
gimp_tool_gui_set_focus_on_map (gui, FALSE);
g_signal_connect (gui, "response",
G_CALLBACK (g_object_unref),
NULL);
table = gtk_table_new (4, 5, TRUE);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
gtk_box_pack_start (GTK_BOX (gimp_tool_gui_get_vbox (gui)), table,
TRUE, TRUE, 0);
gtk_widget_show (table);
label = gtk_label_new (_("Distance:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 0, 1, 0, 1);
gtk_widget_show (label);
measure->distance_label[0] = label = gtk_label_new ("0.0");
gtk_label_set_selectable (GTK_LABEL (label), TRUE);
gtk_label_set_xalign (GTK_LABEL (label), 1.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 1, 2, 0, 1);
gtk_widget_show (label);
label = gtk_label_new (_("pixels"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 2, 3, 0, 1);
gtk_widget_show (label);
measure->distance_label[1] = label = gtk_label_new ("0.0");
gtk_label_set_selectable (GTK_LABEL (label), TRUE);
gtk_label_set_xalign (GTK_LABEL (label), 1.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 3, 4, 0, 1);
gtk_widget_show (label);
measure->unit_label[0] = label = gtk_label_new (NULL);
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 4, 5, 0, 1);
gtk_widget_show (label);
label = gtk_label_new (_("Angle:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 0, 1, 1, 2);
gtk_widget_show (label);
measure->angle_label[0] = label = gtk_label_new ("0.0");
gtk_label_set_selectable (GTK_LABEL (label), TRUE);
gtk_label_set_xalign (GTK_LABEL (label), 1.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 1, 2, 1, 2);
gtk_widget_show (label);
label = gtk_label_new ("\302\260");
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 2, 3, 1, 2);
gtk_widget_show (label);
measure->angle_label[1] = label = gtk_label_new (NULL);
gtk_label_set_selectable (GTK_LABEL (label), TRUE);
gtk_label_set_xalign (GTK_LABEL (label), 1.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 3, 4, 1, 2);
gtk_widget_show (label);
measure->unit_label[1] = label = gtk_label_new (NULL);
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 4, 5, 1, 2);
gtk_widget_show (label);
label = gtk_label_new (_("Width:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 0, 1, 2, 3);
gtk_widget_show (label);
measure->width_label[0] = label = gtk_label_new ("0.0");
gtk_label_set_selectable (GTK_LABEL (label), TRUE);
gtk_label_set_xalign (GTK_LABEL (label), 1.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 1, 2, 2, 3);
gtk_widget_show (label);
label = gtk_label_new (_("pixels"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 2, 3, 2, 3);
gtk_widget_show (label);
measure->width_label[1] = label = gtk_label_new ("0.0");
gtk_label_set_selectable (GTK_LABEL (label), TRUE);
gtk_label_set_xalign (GTK_LABEL (label), 1.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 3, 4, 2, 3);
gtk_widget_show (label);
measure->unit_label[2] = label = gtk_label_new (NULL);
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 4, 5, 2, 3);
gtk_widget_show (label);
label = gtk_label_new (_("Height:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 0, 1, 3, 4);
gtk_widget_show (label);
measure->height_label[0] = label = gtk_label_new ("0.0");
gtk_label_set_selectable (GTK_LABEL (label), TRUE);
gtk_label_set_xalign (GTK_LABEL (label), 1.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 1, 2, 3, 4);
gtk_widget_show (label);
label = gtk_label_new (_("pixels"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 2, 3, 3, 4);
gtk_widget_show (label);
measure->height_label[1] = label = gtk_label_new ("0.0");
gtk_label_set_selectable (GTK_LABEL (label), TRUE);
gtk_label_set_xalign (GTK_LABEL (label), 1.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 3, 4, 3, 4);
gtk_widget_show (label);
measure->unit_label[3] = label = gtk_label_new (NULL);
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_table_attach_defaults (GTK_TABLE (table), label, 4, 5, 3, 4);
gtk_widget_show (label);
return gui;
}
static void
gimp_measure_tool_straighten_button_clicked (GtkWidget *button,
GimpMeasureTool *measure)
{
GimpTool *tool = GIMP_TOOL (measure);
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (measure);
if (gimp_transform_tool_transform (tr_tool, tool->display))
gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, tool->display);
}