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.GestureZoom; 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 public import gtkc.gdktypes; 33 private import gtkc.gtk; 34 public import gtkc.gtktypes; 35 36 37 /** 38 * #GtkGestureZoom is a #GtkGesture implementation able to recognize 39 * pinch/zoom gestures, whenever the distance between both tracked 40 * sequences changes, the #GtkGestureZoom::scale-changed signal is 41 * emitted to report the scale factor. 42 */ 43 public class GestureZoom : Gesture 44 { 45 /** the main Gtk struct */ 46 protected GtkGestureZoom* gtkGestureZoom; 47 48 /** Get the main Gtk struct */ 49 public GtkGestureZoom* getGestureZoomStruct() 50 { 51 return gtkGestureZoom; 52 } 53 54 /** the main Gtk struct as a void* */ 55 protected override void* getStruct() 56 { 57 return cast(void*)gtkGestureZoom; 58 } 59 60 protected override void setStruct(GObject* obj) 61 { 62 gtkGestureZoom = cast(GtkGestureZoom*)obj; 63 super.setStruct(obj); 64 } 65 66 /** 67 * Sets our main struct and passes it to the parent class. 68 */ 69 public this (GtkGestureZoom* gtkGestureZoom, bool ownedRef = false) 70 { 71 this.gtkGestureZoom = gtkGestureZoom; 72 super(cast(GtkGesture*)gtkGestureZoom, ownedRef); 73 } 74 75 76 /** */ 77 public static GType getType() 78 { 79 return gtk_gesture_zoom_get_type(); 80 } 81 82 /** 83 * Returns a newly created #GtkGesture that recognizes zoom 84 * in/out gestures (usually known as pinch/zoom). 85 * 86 * Params: 87 * widget = a #GtkWidget 88 * 89 * Return: a newly created #GtkGestureZoom 90 * 91 * Since: 3.14 92 * 93 * Throws: ConstructionException GTK+ fails to create the object. 94 */ 95 public this(Widget widget) 96 { 97 auto p = gtk_gesture_zoom_new((widget is null) ? null : widget.getWidgetStruct()); 98 99 if(p is null) 100 { 101 throw new ConstructionException("null returned by new"); 102 } 103 104 this(cast(GtkGestureZoom*) p, true); 105 } 106 107 /** 108 * If @gesture is active, this function returns the zooming difference 109 * since the gesture was recognized (hence the starting point is 110 * considered 1:1). If @gesture is not active, 1 is returned. 111 * 112 * Return: the scale delta 113 * 114 * Since: 3.14 115 */ 116 public double getScaleDelta() 117 { 118 return gtk_gesture_zoom_get_scale_delta(gtkGestureZoom); 119 } 120 121 int[string] connectedSignals; 122 123 void delegate(double, GestureZoom)[] onScaleChangedListeners; 124 /** 125 * This signal is emitted whenever the distance between both tracked 126 * sequences changes. 127 * 128 * Params: 129 * scale = Scale delta, taking the initial state as 1:1 130 * 131 * Since: 3.14 132 */ 133 void addOnScaleChanged(void delegate(double, GestureZoom) dlg, ConnectFlags connectFlags=cast(ConnectFlags)0) 134 { 135 if ( "scale-changed" !in connectedSignals ) 136 { 137 Signals.connectData( 138 this, 139 "scale-changed", 140 cast(GCallback)&callBackScaleChanged, 141 cast(void*)this, 142 null, 143 connectFlags); 144 connectedSignals["scale-changed"] = 1; 145 } 146 onScaleChangedListeners ~= dlg; 147 } 148 extern(C) static void callBackScaleChanged(GtkGestureZoom* gesturezoomStruct, double scale, GestureZoom _gesturezoom) 149 { 150 foreach ( void delegate(double, GestureZoom) dlg; _gesturezoom.onScaleChangedListeners ) 151 { 152 dlg(scale, _gesturezoom); 153 } 154 } 155 }