diff options
Diffstat (limited to 'app/propgui/gimppropgui-motion-blur-circular.c')
| -rw-r--r-- | app/propgui/gimppropgui-motion-blur-circular.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/app/propgui/gimppropgui-motion-blur-circular.c b/app/propgui/gimppropgui-motion-blur-circular.c new file mode 100644 index 0000000..a008ef1 --- /dev/null +++ b/app/propgui/gimppropgui-motion-blur-circular.c @@ -0,0 +1,151 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis + * + * gimppropgui-motion-blur-circular.c + * Copyright (C) 2019 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 "libgimpmath/gimpmath.h" +#include "libgimpwidgets/gimpwidgets.h" + +#include "propgui-types.h" + +#include "core/gimpcontext.h" + +#include "gimppropgui-generic.h" +#include "gimppropgui-motion-blur-circular.h" + +#include "gimp-intl.h" + + +static void +line_callback (GObject *config, + GeglRectangle *area, + gdouble x1, + gdouble y1, + gdouble x2, + gdouble y2) +{ + gdouble x, y; + gdouble angle; + + g_object_set_data_full (G_OBJECT (config), "area", + g_memdup (area, sizeof (GeglRectangle)), + (GDestroyNotify) g_free); + + x = x1 / area->width; + y = y1 / area->height; + angle = atan2 (-(y2 - y1), x2 - x1); + + angle = angle * 180.0 / G_PI; + + if (angle < 0) + angle += 360.0; + + g_object_set (config, + "center-x", x, + "center-y", y, + "angle", angle, + NULL); +} + +static void +config_notify (GObject *config, + const GParamSpec *pspec, + gpointer set_data) +{ + GimpControllerLineCallback set_func; + GeglRectangle *area; + gdouble x, y; + gdouble angle; + gdouble x1, y1, x2, y2; + + set_func = g_object_get_data (G_OBJECT (config), "set-func"); + area = g_object_get_data (G_OBJECT (config), "area"); + + g_object_get (config, + "center-x", &x, + "center-y", &y, + "angle", &angle, + NULL); + + angle = angle / 180.0 * G_PI; + + x1 = x * area->width; + y1 = y * area->height; + x2 = x1 + cos (angle) * 100; + y2 = y1 - sin (angle) * 100; + + set_func (set_data, area, x1, y1, x2, y2); +} + +GtkWidget * +_gimp_prop_gui_new_motion_blur_circular (GObject *config, + GParamSpec **param_specs, + guint n_param_specs, + GeglRectangle *area, + GimpContext *context, + GimpCreatePickerFunc create_picker_func, + GimpCreateControllerFunc create_controller_func, + gpointer creator) +{ + GtkWidget *vbox; + + g_return_val_if_fail (G_IS_OBJECT (config), NULL); + g_return_val_if_fail (param_specs != NULL, NULL); + g_return_val_if_fail (n_param_specs > 0, NULL); + g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL); + + vbox = _gimp_prop_gui_new_generic (config, + param_specs, n_param_specs, + area, context, + create_picker_func, + create_controller_func, + creator); + + + if (create_controller_func) + { + GCallback set_func; + gpointer set_data; + + set_func = create_controller_func (creator, + GIMP_CONTROLLER_TYPE_LINE, + _("Circular Motion Blur: "), + (GCallback) line_callback, + config, + &set_data); + + g_object_set_data (G_OBJECT (config), "set-func", set_func); + + g_object_set_data_full (G_OBJECT (config), "area", + g_memdup (area, sizeof (GeglRectangle)), + (GDestroyNotify) g_free); + + config_notify (config, NULL, set_data); + + g_signal_connect (config, "notify", + G_CALLBACK (config_notify), + set_data); + } + + return vbox; +} |