156 lines
5.0 KiB
C
156 lines
5.0 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
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*
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* pikapropgui-motion-blur-circular.c
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* Copyright (C) 2019 Michael Natterer <mitch@gimp.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include "libpikamath/pikamath.h"
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#include "libpikawidgets/pikawidgets.h"
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#include "propgui-types.h"
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#include "core/pikacontext.h"
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#include "pikapropgui-generic.h"
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#include "pikapropgui-motion-blur-circular.h"
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#include "pika-intl.h"
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static void
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line_callback (GObject *config,
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GeglRectangle *area,
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gdouble x1,
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gdouble y1,
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gdouble x2,
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gdouble y2)
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{
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gdouble x, y;
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gdouble angle;
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g_object_set_data_full (G_OBJECT (config), "area",
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g_memdup2 (area, sizeof (GeglRectangle)),
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(GDestroyNotify) g_free);
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x = x1 / area->width;
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y = y1 / area->height;
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angle = atan2 (-(y2 - y1), x2 - x1);
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angle = angle * 180.0 / G_PI;
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if (angle < 0)
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angle += 360.0;
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g_object_set (config,
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"center-x", x,
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"center-y", y,
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"angle", angle,
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NULL);
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}
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static void
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config_notify (GObject *config,
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const GParamSpec *pspec,
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gpointer set_data)
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{
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PikaControllerLineCallback set_func;
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GeglRectangle *area;
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gdouble x, y;
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gdouble angle;
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gdouble x1, y1, x2, y2;
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set_func = g_object_get_data (G_OBJECT (config), "set-func");
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area = g_object_get_data (G_OBJECT (config), "area");
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g_object_get (config,
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"center-x", &x,
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"center-y", &y,
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"angle", &angle,
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NULL);
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angle = angle / 180.0 * G_PI;
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x1 = x * area->width;
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y1 = y * area->height;
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x2 = x1 + cos (angle) * 100;
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y2 = y1 - sin (angle) * 100;
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set_func (set_data, area, x1, y1, x2, y2);
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}
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GtkWidget *
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_pika_prop_gui_new_motion_blur_circular (GObject *config,
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GParamSpec **param_specs,
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guint n_param_specs,
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GeglRectangle *area,
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PikaContext *context,
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PikaCreatePickerFunc create_picker_func,
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PikaCreateControllerFunc create_controller_func,
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gpointer creator)
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{
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GtkWidget *vbox;
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g_return_val_if_fail (G_IS_OBJECT (config), NULL);
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g_return_val_if_fail (param_specs != NULL, NULL);
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g_return_val_if_fail (n_param_specs > 0, NULL);
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g_return_val_if_fail (PIKA_IS_CONTEXT (context), NULL);
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vbox = _pika_prop_gui_new_generic (config,
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param_specs, n_param_specs,
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area, context,
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create_picker_func,
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create_controller_func,
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creator);
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if (create_controller_func)
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{
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GCallback set_func;
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gpointer set_data;
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set_func = create_controller_func (creator,
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PIKA_CONTROLLER_TYPE_LINE,
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_("Circular Motion Blur: "),
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(GCallback) line_callback,
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config,
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&set_data);
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g_object_set_data (G_OBJECT (config), "set-func", set_func);
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g_object_set_data_full (G_OBJECT (config), "area",
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g_memdup2 (area, sizeof (GeglRectangle)),
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(GDestroyNotify) g_free);
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config_notify (config, NULL, set_data);
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g_signal_connect (config, "notify",
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G_CALLBACK (config_notify),
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set_data);
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}
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return vbox;
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}
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