[gimp] app: add initial version of GimpDial, a widget to select a range of angles
- From: Michael Natterer <mitch src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gimp] app: add initial version of GimpDial, a widget to select a range of angles
- Date: Sun, 25 May 2014 13:03:57 +0000 (UTC)
commit b2ac41b961d3c28425f3656f5cf03da7c14782a5
Author: Michael Natterer <mitch gimp org>
Date: Sun May 25 03:03:51 2014 +0200
app: add initial version of GimpDial, a widget to select a range of angles
Ported from the color-rotate plug-in.
app/widgets/Makefile.am | 2 +
app/widgets/gimpdial.c | 662 +++++++++++++++++++++++++++++++++++++++++++
app/widgets/gimpdial.h | 78 +++++
app/widgets/widgets-types.h | 1 +
4 files changed, 743 insertions(+), 0 deletions(-)
---
diff --git a/app/widgets/Makefile.am b/app/widgets/Makefile.am
index ecf5d13..83af774 100644
--- a/app/widgets/Makefile.am
+++ b/app/widgets/Makefile.am
@@ -133,6 +133,8 @@ libappwidgets_a_sources = \
gimpdevices.h \
gimpdevicestatus.c \
gimpdevicestatus.h \
+ gimpdial.c \
+ gimpdial.h \
gimpdialogfactory.c \
gimpdialogfactory.h \
gimpdnd.c \
diff --git a/app/widgets/gimpdial.c b/app/widgets/gimpdial.c
new file mode 100644
index 0000000..f91d362
--- /dev/null
+++ b/app/widgets/gimpdial.c
@@ -0,0 +1,662 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpdial.c
+ * Copyright (C) 2014 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpmath/gimpmath.h"
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "widgets-types.h"
+
+#include "gimpdial.h"
+
+
+#define REL 0.8
+#define DEL 0.1
+#define TICK 10
+#define EACH_OR_BOTH 0.3
+
+
+enum
+{
+ PROP_0,
+ PROP_ALPHA,
+ PROP_BETA
+};
+
+enum
+{
+ FOO,
+ LAST_SIGNAL
+};
+
+
+static void gimp_dial_dispose (GObject *object);
+static void gimp_dial_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void gimp_dial_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec);
+
+static void gimp_dial_realize (GtkWidget *widget);
+static void gimp_dial_unrealize (GtkWidget *widget);
+static void gimp_dial_map (GtkWidget *widget);
+static void gimp_dial_unmap (GtkWidget *widget);
+static void gimp_dial_size_request (GtkWidget *widget,
+ GtkRequisition *requisition);
+static void gimp_dial_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation);
+static gboolean gimp_dial_expose_event (GtkWidget *widget,
+ GdkEventExpose *event);
+static gboolean gimp_dial_button_press_event (GtkWidget *widget,
+ GdkEventButton *bevent);
+static gboolean gimp_dial_button_release_event (GtkWidget *widget,
+ GdkEventButton *bevent);
+static gboolean gimp_dial_motion_notify_event (GtkWidget *widget,
+ GdkEventMotion *mevent);
+
+static void gimp_dial_draw_background (cairo_t *cr,
+ gint size);
+static void gimp_dial_draw_arrows (cairo_t *cr,
+ gint size,
+ gdouble alpha,
+ gdouble beta,
+ DialDirection direction);
+
+
+G_DEFINE_TYPE (GimpDial, gimp_dial, GTK_TYPE_WIDGET)
+
+#define parent_class gimp_dial_parent_class
+
+static guint dial_signals[LAST_SIGNAL] = { 0 };
+
+
+static void
+gimp_dial_class_init (GimpDialClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+ object_class->dispose = gimp_dial_dispose;
+ object_class->get_property = gimp_dial_get_property;
+ object_class->set_property = gimp_dial_set_property;
+
+ widget_class->realize = gimp_dial_realize;
+ widget_class->unrealize = gimp_dial_unrealize;
+ widget_class->map = gimp_dial_map;
+ widget_class->unmap = gimp_dial_unmap;
+ widget_class->size_request = gimp_dial_size_request;
+ widget_class->size_allocate = gimp_dial_size_allocate;
+ widget_class->expose_event = gimp_dial_expose_event;
+ widget_class->button_press_event = gimp_dial_button_press_event;
+ widget_class->button_release_event = gimp_dial_button_release_event;
+ widget_class->motion_notify_event = gimp_dial_motion_notify_event;
+
+ g_object_class_install_property (object_class, PROP_ALPHA,
+ g_param_spec_double ("alpha",
+ NULL, NULL,
+ 0.0, 2 * G_PI, 0.0,
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+
+ g_object_class_install_property (object_class, PROP_BETA,
+ g_param_spec_double ("beta",
+ NULL, NULL,
+ 0.0, 2 * G_PI, G_PI,
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+}
+
+static void
+gimp_dial_init (GimpDial *dial)
+{
+ gtk_widget_set_has_window (GTK_WIDGET (dial), FALSE);
+ gtk_widget_add_events (GTK_WIDGET (dial),
+ GDK_BUTTON_PRESS_MASK |
+ GDK_BUTTON_RELEASE_MASK |
+ GDK_BUTTON1_MOTION_MASK);
+
+ dial->border_width = 4;
+ dial->direction = DIAL_DIRECTION_CW;
+}
+
+static void
+gimp_dial_dispose (GObject *object)
+{
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gimp_dial_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GimpDial *dial = GIMP_DIAL (object);
+
+ switch (property_id)
+ {
+ case PROP_ALPHA:
+ dial->alpha = g_value_get_double (value);
+ gtk_widget_queue_draw (GTK_WIDGET (dial));
+ break;
+
+ case PROP_BETA:
+ dial->beta = g_value_get_double (value);
+ gtk_widget_queue_draw (GTK_WIDGET (dial));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_dial_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GimpDial *dial = GIMP_DIAL (object);
+
+ switch (property_id)
+ {
+ case PROP_ALPHA:
+ g_value_set_double (value, dial->alpha);
+ break;
+
+ case PROP_BETA:
+ g_value_set_double (value, dial->beta);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_dial_realize (GtkWidget *widget)
+{
+ GimpDial *dial = GIMP_DIAL (widget);
+ GtkAllocation allocation;
+ GdkWindowAttr attributes;
+ gint attributes_mask;
+
+ GTK_WIDGET_CLASS (parent_class)->realize (widget);
+
+ gtk_widget_get_allocation (widget, &allocation);
+
+ attributes.window_type = GDK_WINDOW_CHILD;
+ attributes.x = allocation.x;
+ attributes.y = allocation.y;
+ attributes.width = allocation.width;
+ attributes.height = allocation.height;
+ attributes.wclass = GDK_INPUT_ONLY;
+ attributes.event_mask = gtk_widget_get_events (widget);
+
+ attributes_mask = GDK_WA_X | GDK_WA_Y;
+
+ dial->event_window = gdk_window_new (gtk_widget_get_window (widget),
+ &attributes, attributes_mask);
+ gdk_window_set_user_data (dial->event_window, dial);
+}
+
+static void
+gimp_dial_unrealize (GtkWidget *widget)
+{
+ GimpDial *dial = GIMP_DIAL (widget);
+
+ if (dial->event_window)
+ {
+ gdk_window_set_user_data (dial->event_window, NULL);
+ gdk_window_destroy (dial->event_window);
+ dial->event_window = NULL;
+ }
+
+ GTK_WIDGET_CLASS (parent_class)->unrealize (widget);
+}
+
+static void
+gimp_dial_map (GtkWidget *widget)
+{
+ GimpDial *dial = GIMP_DIAL (widget);
+
+ GTK_WIDGET_CLASS (parent_class)->map (widget);
+
+ if (dial->event_window)
+ gdk_window_show (dial->event_window);
+}
+
+static void
+gimp_dial_unmap (GtkWidget *widget)
+{
+ GimpDial *dial = GIMP_DIAL (widget);
+
+ if (dial->has_grab)
+ {
+ gtk_grab_remove (widget);
+ dial->has_grab = FALSE;
+ }
+
+ if (dial->event_window)
+ gdk_window_hide (dial->event_window);
+
+ GTK_WIDGET_CLASS (parent_class)->unmap (widget);
+}
+
+static void
+gimp_dial_size_request (GtkWidget *widget,
+ GtkRequisition *requisition)
+{
+ GimpDial *dial = GIMP_DIAL (widget);
+
+ requisition->width = 2 * dial->border_width + 128;
+ requisition->height = 2 * dial->border_width + 128;
+}
+
+static void
+gimp_dial_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation)
+{
+ GimpDial *dial = GIMP_DIAL (widget);
+
+ gtk_widget_set_allocation (widget, allocation);
+
+ if (gtk_widget_get_realized (widget))
+ gdk_window_move_resize (dial->event_window,
+ allocation->x,
+ allocation->y,
+ allocation->width,
+ allocation->height);
+}
+
+static gboolean
+gimp_dial_expose_event (GtkWidget *widget,
+ GdkEventExpose *event)
+{
+ GimpDial *dial = GIMP_DIAL (widget);
+
+ if (gtk_widget_is_drawable (widget))
+ {
+ GtkAllocation allocation;
+ cairo_t *cr;
+ gint size;
+ gint x, y;
+
+ gtk_widget_get_allocation (widget, &allocation);
+
+ cr = gdk_cairo_create (event->window);
+ gdk_cairo_region (cr, event->region);
+ cairo_clip (cr);
+
+ size = MIN (allocation.width, allocation.height) - 2 * dial->border_width;
+
+ x = (allocation.width - 2 * dial->border_width - size) / 2;
+ y = (allocation.height - 2 * dial->border_width - size) / 2;
+
+ cairo_translate (cr,
+ allocation.x + dial->border_width + x,
+ allocation.y + dial->border_width + y);
+
+ gimp_dial_draw_background (cr, size);
+ gimp_dial_draw_arrows (cr, size, dial->alpha, dial->beta, dial->direction);
+
+ cairo_destroy (cr);
+ }
+
+ return FALSE;
+}
+
+static gdouble
+angle_mod_2PI (gdouble angle)
+{
+ if (angle < 0)
+ return angle + 2 * G_PI;
+ else if (angle > 2 * G_PI)
+ return angle - 2 * G_PI;
+ else
+ return angle;
+}
+
+static gdouble
+arctg (gdouble y,
+ gdouble x)
+{
+ gdouble temp = atan2 (y, x);
+
+ return (temp < 0) ? (temp + 2 * G_PI) : temp;
+}
+
+static gdouble
+min_prox (gdouble alpha,
+ gdouble beta,
+ gdouble angle)
+{
+ gdouble temp1 = MIN (angle_mod_2PI (alpha - angle),
+ 2 * G_PI - angle_mod_2PI (alpha - angle));
+ gdouble temp2 = MIN (angle_mod_2PI (beta - angle),
+ 2 * G_PI - angle_mod_2PI (beta - angle));
+
+ return MIN (temp1, temp2);
+}
+
+static DialTarget
+closest (gdouble alpha,
+ gdouble beta,
+ gdouble angle)
+{
+ gdouble temp_alpha = MIN (angle_mod_2PI (alpha - angle),
+ 2 * G_PI - angle_mod_2PI (alpha - angle));
+
+ gdouble temp_beta = MIN (angle_mod_2PI (beta - angle),
+ 2 * G_PI - angle_mod_2PI (beta - angle));
+
+ if (temp_alpha - temp_beta < 0)
+ return DIAL_TARGET_ALPHA;
+ else
+ return DIAL_TARGET_BETA;
+}
+
+static gboolean
+gimp_dial_button_press_event (GtkWidget *widget,
+ GdkEventButton *bevent)
+{
+ GimpDial *dial = GIMP_DIAL (widget);
+
+ if (bevent->type == GDK_BUTTON_PRESS)
+ {
+ if (gdk_event_triggers_context_menu ((GdkEvent *) bevent))
+ {
+ dial->press_state = 0;
+
+ //g_signal_emit (widget, dial_signals[CONTEXT], 0);
+ }
+ else if (bevent->button == 1)
+ {
+ GtkAllocation allocation;
+ gint size;
+ gdouble center_x;
+ gdouble center_y;
+ gdouble press_angle;
+
+ gtk_widget_get_allocation (widget, &allocation);
+
+ size = MIN (allocation.width, allocation.height) - 2 * dial->border_width;
+
+ center_x = allocation.width / 2.0;
+ center_y = allocation.height / 2.0;
+
+ gtk_grab_add (widget);
+
+ dial->has_grab = TRUE;
+ dial->press_state = bevent->state;
+
+ press_angle = angle_mod_2PI (arctg (center_y - bevent->y,
+ bevent->x - center_x));
+ dial->press_angle = press_angle;
+
+ if ((sqrt (SQR (bevent->y - center_y) +
+ SQR (bevent->x - center_x)) > size / 2.0 * EACH_OR_BOTH) &&
+ (min_prox (dial->alpha, dial->beta, press_angle) < G_PI / 12))
+ {
+ dial->target = closest (dial->alpha, dial->beta, press_angle);
+
+ if (dial->target == DIAL_TARGET_ALPHA)
+ g_object_set (dial, "alpha", press_angle, NULL);
+ else
+ g_object_set (dial, "beta", press_angle, NULL);
+ }
+ else
+ {
+ dial->target = DIAL_TARGET_BOTH;
+ }
+ }
+ }
+
+ return FALSE;
+}
+
+static gboolean
+gimp_dial_button_release_event (GtkWidget *widget,
+ GdkEventButton *bevent)
+{
+ GimpDial *dial = GIMP_DIAL (widget);
+
+ if (bevent->button == 1)
+ {
+ gtk_grab_remove (widget);
+ dial->has_grab = FALSE;
+ }
+
+ return FALSE;
+}
+
+static gboolean
+gimp_dial_motion_notify_event (GtkWidget *widget,
+ GdkEventMotion *mevent)
+{
+ GimpDial *dial = GIMP_DIAL (widget);
+ GtkAllocation allocation;
+ gdouble center_x;
+ gdouble center_y;
+ gfloat motion_angle, delta;
+
+ gtk_widget_get_allocation (widget, &allocation);
+
+ center_x = allocation.width / 2.0;
+ center_y = allocation.height / 2.0;
+
+ motion_angle = angle_mod_2PI (arctg (center_y - mevent->y,
+ mevent->x - center_x));
+
+ delta = motion_angle - dial->press_angle;
+ dial->press_angle = motion_angle;
+
+ if (delta)
+ {
+ if (dial->target == DIAL_TARGET_ALPHA)
+ {
+ g_object_set (dial, "alpha", motion_angle, NULL);
+ }
+ else if (dial->target == DIAL_TARGET_BETA)
+ {
+ g_object_set (dial, "beta", motion_angle, NULL);
+ }
+ else
+ {
+ g_object_set (dial,
+ "alpha", angle_mod_2PI (dial->alpha + delta),
+ "beta", angle_mod_2PI (dial->beta + delta),
+ NULL);
+ }
+ }
+
+ return FALSE;
+}
+
+
+/* public functions */
+
+GtkWidget *
+gimp_dial_new (void)
+{
+ return g_object_new (GIMP_TYPE_DIAL, NULL);
+}
+
+
+/* private functions */
+
+static void
+gimp_dial_draw_background (cairo_t *cr,
+ gint size)
+{
+ cairo_surface_t *surface;
+ guchar *data;
+ gint stride;
+ gint i, j;
+
+ surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, size, size);
+
+ data = cairo_image_surface_get_data (surface);
+ stride = cairo_image_surface_get_stride (surface);
+
+ for (j = 0; j < size; j++)
+ {
+ for (i = 0; i < size; i++)
+ {
+ gdouble h, s, v;
+ guchar rgb[3];
+
+ s = sqrt ((SQR (i - size / 2.0) +
+ SQR (j - size / 2.0)) / (gdouble) SQR (size / 2.0));
+
+ h = arctg (size / 2.0 - j, i - size / 2.0) / (2 * G_PI);
+ v = 1 - sqrt (s) / 4;
+
+ gimp_hsv_to_rgb4 (rgb, h, MIN (1.0, s), v);
+
+ GIMP_CAIRO_ARGB32_SET_PIXEL (data + j * stride + i * 4,
+ rgb[0], rgb[1], rgb[2], 255);
+ }
+ }
+
+ cairo_surface_mark_dirty (surface);
+
+ cairo_save (cr);
+
+ cairo_set_source_surface (cr, surface, 0.0, 0.0);
+
+ cairo_arc (cr, size / 2.0, size / 2.0, size / 2.0, 0.0, 2 * G_PI);
+ cairo_clip (cr);
+
+ cairo_paint (cr);
+
+ cairo_restore (cr);
+
+ cairo_surface_destroy (surface);
+}
+
+static void
+gimp_dial_draw_arrows (cairo_t *cr,
+ gint size,
+ gdouble alpha,
+ gdouble beta,
+ DialDirection direction)
+{
+ gint radius = size / 2.0;
+ gint dist;
+ gdouble delta;
+
+ delta = angle_mod_2PI (beta - alpha);
+
+ if (direction == DIAL_DIRECTION_CCW)
+ delta = delta - 2 * G_PI;
+
+ cairo_move_to (cr, radius, radius);
+ cairo_line_to (cr,
+ ROUND (radius + radius * cos (alpha)),
+ ROUND (radius - radius * sin (alpha)));
+
+ cairo_move_to (cr,
+ radius + radius * cos (alpha),
+ radius - radius * sin (alpha));
+ cairo_line_to (cr,
+ ROUND (radius + radius * REL * cos (alpha - DEL)),
+ ROUND (radius - radius * REL * sin (alpha - DEL)));
+
+ cairo_move_to (cr,
+ radius + radius * cos (alpha),
+ radius - radius * sin (alpha));
+ cairo_line_to (cr,
+ ROUND (radius + radius * REL * cos (alpha + DEL)),
+ ROUND (radius - radius * REL * sin (alpha + DEL)));
+
+ cairo_move_to (cr,
+ radius,
+ radius);
+ cairo_line_to (cr,
+ ROUND (radius + radius * cos (beta)),
+ ROUND (radius - radius * sin (beta)));
+
+ cairo_move_to (cr,
+ radius + radius * cos (beta),
+ radius - radius * sin (beta));
+ cairo_line_to (cr,
+ ROUND (radius + radius * REL * cos (beta - DEL)),
+ ROUND (radius - radius * REL * sin (beta - DEL)));
+
+ cairo_move_to (cr,
+ radius + radius * cos (beta),
+ radius - radius * sin (beta));
+ cairo_line_to (cr,
+ ROUND (radius + radius * REL * cos (beta + DEL)),
+ ROUND (radius - radius * REL * sin (beta + DEL)));
+
+ dist = radius * EACH_OR_BOTH;
+
+ cairo_move_to (cr,
+ radius + dist * cos (beta),
+ radius - dist * sin (beta));
+ cairo_line_to (cr,
+ ROUND (radius + dist * cos(beta) +
+ direction * TICK * sin (beta)),
+ ROUND (radius - dist * sin(beta) +
+ direction * TICK * cos (beta)));
+
+ cairo_new_sub_path (cr);
+
+ if (direction == DIAL_DIRECTION_CW)
+ {
+ cairo_arc_negative (cr,
+ radius,
+ radius,
+ dist,
+ -alpha,
+ -beta);
+ }
+ else
+ {
+ cairo_arc (cr,
+ radius,
+ radius,
+ dist,
+ -alpha,
+ -beta);
+ }
+
+ cairo_set_line_width (cr, 3.0);
+ cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.6);
+ cairo_stroke_preserve (cr);
+
+ cairo_set_line_width (cr, 1.0);
+ cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.8);
+ cairo_stroke (cr);
+}
diff --git a/app/widgets/gimpdial.h b/app/widgets/gimpdial.h
new file mode 100644
index 0000000..b534588
--- /dev/null
+++ b/app/widgets/gimpdial.h
@@ -0,0 +1,78 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpdial.h
+ * Copyright (C) 2014 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 <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GIMP_DIAL_H__
+#define __GIMP_DIAL_H__
+
+
+typedef enum
+{
+ DIAL_DIRECTION_CW = 1,
+ DIAL_DIRECTION_CCW = -1
+} DialDirection;
+
+typedef enum
+{
+ DIAL_TARGET_ALPHA,
+ DIAL_TARGET_BETA,
+ DIAL_TARGET_BOTH
+} DialTarget;
+
+
+#define GIMP_TYPE_DIAL (gimp_dial_get_type ())
+#define GIMP_DIAL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_DIAL, GimpDial))
+#define GIMP_DIAL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_DIAL, GimpDialClass))
+#define GIMP_IS_DIAL(obj) (G_TYPE_CHECK_INSTANCE_TYPE (obj, GIMP_TYPE_DIAL))
+#define GIMP_IS_DIAL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_DIAL))
+#define GIMP_DIAL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_DIAL, GimpDialClass))
+
+
+typedef struct _GimpDialClass GimpDialClass;
+
+struct _GimpDial
+{
+ GtkWidget parent_instance;
+
+ gdouble alpha;
+ gdouble beta;
+ DialDirection direction;
+
+ GdkWindow *event_window;
+
+ DialTarget target;
+ gdouble press_angle;
+
+ gint border_width;
+ guint has_grab : 1;
+ GdkModifierType press_state;
+};
+
+struct _GimpDialClass
+{
+ GtkWidgetClass parent_class;
+};
+
+
+GType gimp_dial_get_type (void) G_GNUC_CONST;
+
+GtkWidget * gimp_dial_new (void);
+
+
+#endif /* __GIMP_DIAL_H__ */
diff --git a/app/widgets/widgets-types.h b/app/widgets/widgets-types.h
index eda8634..42f1f72 100644
--- a/app/widgets/widgets-types.h
+++ b/app/widgets/widgets-types.h
@@ -167,6 +167,7 @@ typedef struct _GimpCurveView GimpCurveView;
typedef struct _GimpDashEditor GimpDashEditor;
typedef struct _GimpDeviceEditor GimpDeviceEditor;
typedef struct _GimpDeviceInfoEditor GimpDeviceInfoEditor;
+typedef struct _GimpDial GimpDial;
typedef struct _GimpDynamicsOutputEditor GimpDynamicsOutputEditor;
typedef struct _GimpFgBgEditor GimpFgBgEditor;
typedef struct _GimpFgBgView GimpFgBgView;
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