365 lines
12 KiB
C
365 lines
12 KiB
C
|
/* 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
|
||
|
|
*
|
||
|
|
* pikatoolsheargrid.c
|
||
|
|
* Copyright (C) 2017 Michael Natterer <mitch@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 "libpikabase/pikabase.h"
|
||
|
|
#include "libpikamath/pikamath.h"
|
||
|
|
|
||
|
|
#include "display-types.h"
|
||
|
|
|
||
|
|
#include "core/pika-transform-utils.h"
|
||
|
|
#include "core/pika-utils.h"
|
||
|
|
|
||
|
|
#include "pikadisplayshell.h"
|
||
|
|
#include "pikatoolsheargrid.h"
|
||
|
|
|
||
|
|
#include "pika-intl.h"
|
||
|
|
|
||
|
|
|
||
|
|
enum
|
||
|
|
{
|
||
|
|
PROP_0,
|
||
|
|
PROP_ORIENTATION,
|
||
|
|
PROP_SHEAR_X,
|
||
|
|
PROP_SHEAR_Y
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
struct _PikaToolShearGridPrivate
|
||
|
|
{
|
||
|
|
PikaOrientationType orientation;
|
||
|
|
gdouble shear_x;
|
||
|
|
gdouble shear_y;
|
||
|
|
|
||
|
|
gdouble last_x;
|
||
|
|
gdouble last_y;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* local function prototypes */
|
||
|
|
|
||
|
|
static void pika_tool_shear_grid_set_property (GObject *object,
|
||
|
|
guint property_id,
|
||
|
|
const GValue *value,
|
||
|
|
GParamSpec *pspec);
|
||
|
|
static void pika_tool_shear_grid_get_property (GObject *object,
|
||
|
|
guint property_id,
|
||
|
|
GValue *value,
|
||
|
|
GParamSpec *pspec);
|
||
|
|
|
||
|
|
static gint pika_tool_shear_grid_button_press (PikaToolWidget *widget,
|
||
|
|
const PikaCoords *coords,
|
||
|
|
guint32 time,
|
||
|
|
GdkModifierType state,
|
||
|
|
PikaButtonPressType press_type);
|
||
|
|
static void pika_tool_shear_grid_motion (PikaToolWidget *widget,
|
||
|
|
const PikaCoords *coords,
|
||
|
|
guint32 time,
|
||
|
|
GdkModifierType state);
|
||
|
|
|
||
|
|
|
||
|
|
G_DEFINE_TYPE_WITH_PRIVATE (PikaToolShearGrid, pika_tool_shear_grid,
|
||
|
|
PIKA_TYPE_TOOL_TRANSFORM_GRID)
|
||
|
|
|
||
|
|
#define parent_class pika_tool_shear_grid_parent_class
|
||
|
|
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_tool_shear_grid_class_init (PikaToolShearGridClass *klass)
|
||
|
|
{
|
||
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
||
|
|
PikaToolWidgetClass *widget_class = PIKA_TOOL_WIDGET_CLASS (klass);
|
||
|
|
|
||
|
|
object_class->set_property = pika_tool_shear_grid_set_property;
|
||
|
|
object_class->get_property = pika_tool_shear_grid_get_property;
|
||
|
|
|
||
|
|
widget_class->button_press = pika_tool_shear_grid_button_press;
|
||
|
|
widget_class->motion = pika_tool_shear_grid_motion;
|
||
|
|
|
||
|
|
g_object_class_install_property (object_class, PROP_ORIENTATION,
|
||
|
|
g_param_spec_enum ("orientation",
|
||
|
|
NULL, NULL,
|
||
|
|
PIKA_TYPE_ORIENTATION_TYPE,
|
||
|
|
PIKA_ORIENTATION_UNKNOWN,
|
||
|
|
PIKA_PARAM_READWRITE |
|
||
|
|
G_PARAM_CONSTRUCT));
|
||
|
|
|
||
|
|
g_object_class_install_property (object_class, PROP_SHEAR_X,
|
||
|
|
g_param_spec_double ("shear-x",
|
||
|
|
NULL, NULL,
|
||
|
|
-PIKA_MAX_IMAGE_SIZE,
|
||
|
|
PIKA_MAX_IMAGE_SIZE,
|
||
|
|
0.0,
|
||
|
|
PIKA_PARAM_READWRITE |
|
||
|
|
G_PARAM_CONSTRUCT));
|
||
|
|
|
||
|
|
g_object_class_install_property (object_class, PROP_SHEAR_Y,
|
||
|
|
g_param_spec_double ("shear-y",
|
||
|
|
NULL, NULL,
|
||
|
|
-PIKA_MAX_IMAGE_SIZE,
|
||
|
|
PIKA_MAX_IMAGE_SIZE,
|
||
|
|
0.0,
|
||
|
|
PIKA_PARAM_READWRITE |
|
||
|
|
G_PARAM_CONSTRUCT));
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_tool_shear_grid_init (PikaToolShearGrid *grid)
|
||
|
|
{
|
||
|
|
grid->private = pika_tool_shear_grid_get_instance_private (grid);
|
||
|
|
|
||
|
|
g_object_set (grid,
|
||
|
|
"inside-function", PIKA_TRANSFORM_FUNCTION_SHEAR,
|
||
|
|
"outside-function", PIKA_TRANSFORM_FUNCTION_SHEAR,
|
||
|
|
"use-corner-handles", FALSE,
|
||
|
|
"use-perspective-handles", FALSE,
|
||
|
|
"use-side-handles", FALSE,
|
||
|
|
"use-shear-handles", FALSE,
|
||
|
|
"use-center-handle", FALSE,
|
||
|
|
"use-pivot-handle", FALSE,
|
||
|
|
NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_tool_shear_grid_set_property (GObject *object,
|
||
|
|
guint property_id,
|
||
|
|
const GValue *value,
|
||
|
|
GParamSpec *pspec)
|
||
|
|
{
|
||
|
|
PikaToolShearGrid *grid = PIKA_TOOL_SHEAR_GRID (object);
|
||
|
|
PikaToolShearGridPrivate *private = grid->private;
|
||
|
|
|
||
|
|
switch (property_id)
|
||
|
|
{
|
||
|
|
case PROP_ORIENTATION:
|
||
|
|
private->orientation = g_value_get_enum (value);
|
||
|
|
break;
|
||
|
|
case PROP_SHEAR_X:
|
||
|
|
private->shear_x = g_value_get_double (value);
|
||
|
|
break;
|
||
|
|
case PROP_SHEAR_Y:
|
||
|
|
private->shear_y = g_value_get_double (value);
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
pika_tool_shear_grid_get_property (GObject *object,
|
||
|
|
guint property_id,
|
||
|
|
GValue *value,
|
||
|
|
GParamSpec *pspec)
|
||
|
|
{
|
||
|
|
PikaToolShearGrid *grid = PIKA_TOOL_SHEAR_GRID (object);
|
||
|
|
PikaToolShearGridPrivate *private = grid->private;
|
||
|
|
|
||
|
|
switch (property_id)
|
||
|
|
{
|
||
|
|
case PROP_ORIENTATION:
|
||
|
|
g_value_set_enum (value, private->orientation);
|
||
|
|
break;
|
||
|
|
case PROP_SHEAR_X:
|
||
|
|
g_value_set_double (value, private->shear_x);
|
||
|
|
break;
|
||
|
|
case PROP_SHEAR_Y:
|
||
|
|
g_value_set_double (value, private->shear_y);
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static gint
|
||
|
|
pika_tool_shear_grid_button_press (PikaToolWidget *widget,
|
||
|
|
const PikaCoords *coords,
|
||
|
|
guint32 time,
|
||
|
|
GdkModifierType state,
|
||
|
|
PikaButtonPressType press_type)
|
||
|
|
{
|
||
|
|
PikaToolShearGrid *grid = PIKA_TOOL_SHEAR_GRID (widget);
|
||
|
|
PikaToolShearGridPrivate *private = grid->private;
|
||
|
|
|
||
|
|
private->last_x = coords->x;
|
||
|
|
private->last_y = coords->y;
|
||
|
|
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
pika_tool_shear_grid_motion (PikaToolWidget *widget,
|
||
|
|
const PikaCoords *coords,
|
||
|
|
guint32 time,
|
||
|
|
GdkModifierType state)
|
||
|
|
{
|
||
|
|
PikaToolShearGrid *grid = PIKA_TOOL_SHEAR_GRID (widget);
|
||
|
|
PikaToolShearGridPrivate *private = grid->private;
|
||
|
|
gdouble diffx = coords->x - private->last_x;
|
||
|
|
gdouble diffy = coords->y - private->last_y;
|
||
|
|
gdouble amount = 0.0;
|
||
|
|
PikaMatrix3 transform;
|
||
|
|
PikaMatrix3 *t;
|
||
|
|
gdouble x1, y1;
|
||
|
|
gdouble x2, y2;
|
||
|
|
gdouble tx1, ty1;
|
||
|
|
gdouble tx2, ty2;
|
||
|
|
gdouble tx3, ty3;
|
||
|
|
gdouble tx4, ty4;
|
||
|
|
gdouble current_x;
|
||
|
|
gdouble current_y;
|
||
|
|
|
||
|
|
g_object_get (widget,
|
||
|
|
"transform", &t,
|
||
|
|
"x1", &x1,
|
||
|
|
"y1", &y1,
|
||
|
|
"x2", &x2,
|
||
|
|
"y2", &y2,
|
||
|
|
NULL);
|
||
|
|
|
||
|
|
pika_matrix3_transform_point (t, x1, y1, &tx1, &ty1);
|
||
|
|
pika_matrix3_transform_point (t, x2, y1, &tx2, &ty2);
|
||
|
|
pika_matrix3_transform_point (t, x1, y2, &tx3, &ty3);
|
||
|
|
pika_matrix3_transform_point (t, x2, y2, &tx4, &ty4);
|
||
|
|
|
||
|
|
g_free (t);
|
||
|
|
|
||
|
|
current_x = coords->x;
|
||
|
|
current_y = coords->y;
|
||
|
|
|
||
|
|
diffx = current_x - private->last_x;
|
||
|
|
diffy = current_y - private->last_y;
|
||
|
|
|
||
|
|
/* If we haven't yet decided on which way to control shearing
|
||
|
|
* decide using the maximum differential
|
||
|
|
*/
|
||
|
|
if (private->orientation == PIKA_ORIENTATION_UNKNOWN)
|
||
|
|
{
|
||
|
|
#define MIN_MOVE 5
|
||
|
|
|
||
|
|
if (ABS (diffx) > MIN_MOVE || ABS (diffy) > MIN_MOVE)
|
||
|
|
{
|
||
|
|
if (ABS (diffx) > ABS (diffy))
|
||
|
|
{
|
||
|
|
private->orientation = PIKA_ORIENTATION_HORIZONTAL;
|
||
|
|
private->shear_x = 0.0;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
private->orientation = PIKA_ORIENTATION_VERTICAL;
|
||
|
|
private->shear_y = 0.0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/* set the current coords to the last ones */
|
||
|
|
else
|
||
|
|
{
|
||
|
|
current_x = private->last_x;
|
||
|
|
current_y = private->last_y;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* if the direction is known, keep track of the magnitude */
|
||
|
|
if (private->orientation == PIKA_ORIENTATION_HORIZONTAL)
|
||
|
|
{
|
||
|
|
if (current_y > (ty1 + ty3) / 2)
|
||
|
|
private->shear_x += diffx;
|
||
|
|
else
|
||
|
|
private->shear_x -= diffx;
|
||
|
|
|
||
|
|
amount = private->shear_x;
|
||
|
|
}
|
||
|
|
else if (private->orientation == PIKA_ORIENTATION_VERTICAL)
|
||
|
|
{
|
||
|
|
if (current_x > (tx1 + tx2) / 2)
|
||
|
|
private->shear_y += diffy;
|
||
|
|
else
|
||
|
|
private->shear_y -= diffy;
|
||
|
|
|
||
|
|
amount = private->shear_y;
|
||
|
|
}
|
||
|
|
|
||
|
|
pika_matrix3_identity (&transform);
|
||
|
|
pika_transform_matrix_shear (&transform,
|
||
|
|
x1, y1, x2 - x1, y2 - y1,
|
||
|
|
private->orientation, amount);
|
||
|
|
|
||
|
|
g_object_set (widget,
|
||
|
|
"transform", &transform,
|
||
|
|
"orientation", private->orientation,
|
||
|
|
"shear-x", private->shear_x,
|
||
|
|
"shear_y", private->shear_y,
|
||
|
|
NULL);
|
||
|
|
|
||
|
|
private->last_x = current_x;
|
||
|
|
private->last_y = current_y;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* public functions */
|
||
|
|
|
||
|
|
PikaToolWidget *
|
||
|
|
pika_tool_shear_grid_new (PikaDisplayShell *shell,
|
||
|
|
gdouble x1,
|
||
|
|
gdouble y1,
|
||
|
|
gdouble x2,
|
||
|
|
gdouble y2,
|
||
|
|
PikaOrientationType orientation,
|
||
|
|
gdouble shear_x,
|
||
|
|
gdouble shear_y)
|
||
|
|
{
|
||
|
|
PikaMatrix3 transform;
|
||
|
|
gdouble amount;
|
||
|
|
|
||
|
|
g_return_val_if_fail (PIKA_IS_DISPLAY_SHELL (shell), NULL);
|
||
|
|
|
||
|
|
if (orientation == PIKA_ORIENTATION_HORIZONTAL)
|
||
|
|
amount = shear_x;
|
||
|
|
else
|
||
|
|
amount = shear_y;
|
||
|
|
|
||
|
|
pika_matrix3_identity (&transform);
|
||
|
|
pika_transform_matrix_shear (&transform,
|
||
|
|
x1, y1, x2 - x1, y2 - y1,
|
||
|
|
orientation, amount);
|
||
|
|
|
||
|
|
return g_object_new (PIKA_TYPE_TOOL_SHEAR_GRID,
|
||
|
|
"shell", shell,
|
||
|
|
"transform", &transform,
|
||
|
|
"x1", x1,
|
||
|
|
"y1", y1,
|
||
|
|
"x2", x2,
|
||
|
|
"y2", y2,
|
||
|
|
"orientation", orientation,
|
||
|
|
"shear-x", shear_x,
|
||
|
|
"shear-y", shear_y,
|
||
|
|
NULL);
|
||
|
|
}
|
