1 /* 2 * This file is part of gtkD. 3 * 4 * gtkD is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU Lesser General Public License 6 * as published by the Free Software Foundation; either version 3 7 * of the License, or (at your option) any later version, with 8 * some exceptions, please read the COPYING file. 9 * 10 * gtkD is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU Lesser General Public License for more details. 14 * 15 * You should have received a copy of the GNU Lesser General Public License 16 * along with gtkD; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA 18 */ 19 20 // generated automatically - do not change 21 // find conversion definition on APILookup.txt 22 // implement new conversion functionalities on the wrap.utils pakage 23 24 25 module gtk.GestureRotate; 26 27 private import glib.ConstructionException; 28 private import gobject.ObjectG; 29 private import gobject.Signals; 30 private import gtk.Gesture; 31 private import gtk.Widget; 32 private import gtkc.gtk; 33 public import gtkc.gtktypes; 34 private import std.algorithm; 35 36 37 /** 38 * #GtkGestureRotate is a #GtkGesture implementation able to recognize 39 * 2-finger rotations, whenever the angle between both handled sequences 40 * changes, the #GtkGestureRotate::angle-changed signal is emitted. 41 */ 42 public class GestureRotate : Gesture 43 { 44 /** the main Gtk struct */ 45 protected GtkGestureRotate* gtkGestureRotate; 46 47 /** Get the main Gtk struct */ 48 public GtkGestureRotate* getGestureRotateStruct(bool transferOwnership = false) 49 { 50 if (transferOwnership) 51 ownedRef = false; 52 return gtkGestureRotate; 53 } 54 55 /** the main Gtk struct as a void* */ 56 protected override void* getStruct() 57 { 58 return cast(void*)gtkGestureRotate; 59 } 60 61 protected override void setStruct(GObject* obj) 62 { 63 gtkGestureRotate = cast(GtkGestureRotate*)obj; 64 super.setStruct(obj); 65 } 66 67 /** 68 * Sets our main struct and passes it to the parent class. 69 */ 70 public this (GtkGestureRotate* gtkGestureRotate, bool ownedRef = false) 71 { 72 this.gtkGestureRotate = gtkGestureRotate; 73 super(cast(GtkGesture*)gtkGestureRotate, ownedRef); 74 } 75 76 77 /** */ 78 public static GType getType() 79 { 80 return gtk_gesture_rotate_get_type(); 81 } 82 83 /** 84 * Returns a newly created #GtkGesture that recognizes 2-touch 85 * rotation gestures. 86 * 87 * Params: 88 * widget = a #GtkWidget 89 * 90 * Returns: a newly created #GtkGestureRotate 91 * 92 * Since: 3.14 93 * 94 * Throws: ConstructionException GTK+ fails to create the object. 95 */ 96 public this(Widget widget) 97 { 98 auto p = gtk_gesture_rotate_new((widget is null) ? null : widget.getWidgetStruct()); 99 100 if(p is null) 101 { 102 throw new ConstructionException("null returned by new"); 103 } 104 105 this(cast(GtkGestureRotate*) p, true); 106 } 107 108 /** 109 * If @gesture is active, this function returns the angle difference 110 * in radians since the gesture was first recognized. If @gesture is 111 * not active, 0 is returned. 112 * 113 * Returns: the angle delta in radians 114 * 115 * Since: 3.14 116 */ 117 public double getAngleDelta() 118 { 119 return gtk_gesture_rotate_get_angle_delta(gtkGestureRotate); 120 } 121 122 protected class OnAngleChangedDelegateWrapper 123 { 124 static OnAngleChangedDelegateWrapper[] listeners; 125 void delegate(double, double, GestureRotate) dlg; 126 gulong handlerId; 127 128 this(void delegate(double, double, GestureRotate) dlg) 129 { 130 this.dlg = dlg; 131 this.listeners ~= this; 132 } 133 134 void remove(OnAngleChangedDelegateWrapper source) 135 { 136 foreach(index, wrapper; listeners) 137 { 138 if (wrapper.handlerId == source.handlerId) 139 { 140 listeners[index] = null; 141 listeners = std.algorithm.remove(listeners, index); 142 break; 143 } 144 } 145 } 146 } 147 148 /** 149 * This signal is emitted when the angle between both tracked points 150 * changes. 151 * 152 * Params: 153 * angle = Current angle in radians 154 * angleDelta = Difference with the starting angle, in radians 155 * 156 * Since: 3.14 157 */ 158 gulong addOnAngleChanged(void delegate(double, double, GestureRotate) dlg, ConnectFlags connectFlags=cast(ConnectFlags)0) 159 { 160 auto wrapper = new OnAngleChangedDelegateWrapper(dlg); 161 wrapper.handlerId = Signals.connectData( 162 this, 163 "angle-changed", 164 cast(GCallback)&callBackAngleChanged, 165 cast(void*)wrapper, 166 cast(GClosureNotify)&callBackAngleChangedDestroy, 167 connectFlags); 168 return wrapper.handlerId; 169 } 170 171 extern(C) static void callBackAngleChanged(GtkGestureRotate* gesturerotateStruct, double angle, double angleDelta, OnAngleChangedDelegateWrapper wrapper) 172 { 173 wrapper.dlg(angle, angleDelta, wrapper.outer); 174 } 175 176 extern(C) static void callBackAngleChangedDestroy(OnAngleChangedDelegateWrapper wrapper, GClosure* closure) 177 { 178 wrapper.remove(wrapper); 179 } 180 }