| Geant4 Cross Reference |
1 // Copyright (C) 2010, Guy Barrand. All rights reserved.
2 // See the file tools.license for terms.
3
4 #ifndef toolx_Xt_ImageArea
5 #define toolx_Xt_ImageArea
6
7 #include <X11/IntrinsicP.h>
8 #include <X11/CoreP.h>
9 #include <X11/CompositeP.h>
10 #include <X11/StringDefs.h>
11
12 //#define TOOLX_XT_IMAGEAREA_DEBUG
13
14 #ifdef TOOLX_XT_IMAGEAREA_DEBUG
15 #include <stdio.h>
16 #endif
17
18 namespace toolx {
19 namespace Xt {
20
21 ///////////////////////////////////////////////////////////
22 ///////////////////////////////////////////////////////////
23 ///////////////////////////////////////////////////////////
24
25 typedef struct _ImageAreaClassRec* ImageAreaWidgetClass;
26 typedef struct _ImageAreaRec* ImageAreaWidget;
27
28 ///////////////////////////////////////////////////////////
29 ///////////////////////////////////////////////////////////
30 ///////////////////////////////////////////////////////////
31
32 typedef struct {
33 void* extension;
34 } ImageAreaClassPart;
35
36 typedef struct _ImageAreaClassRec {
37 CoreClassPart core_class;
38 CompositeClassPart composite_class;
39 ImageAreaClassPart imageArea_class;
40 } ImageAreaClassRec;
41
42 typedef struct {
43 XtCallbackList resizeCallback;
44 XtCallbackList paintCallback;
45 XtCallbackList eventCallback;
46 } ImageAreaPart;
47
48 typedef struct _ImageAreaRec {
49 CorePart core;
50 CompositePart composite;
51 ImageAreaPart imageArea;
52 } ImageAreaRec;
53
54 ///////////////////////////////////////////////////////////
55 ///////////////////////////////////////////////////////////
56 ///////////////////////////////////////////////////////////
57
58 class ImageArea {
59 protected:
60 static const char* class_name() {static const char* s_s = "ImageArea";return s_s;}
61 public:
62 typedef struct {
63 int reason;
64 XEvent* event;
65 } XoAnyCallbackStruct;
66
67 static int XoCR_RESIZE() {return 1;}
68 static int XoCR_PAINT() {return 2;}
69 static int XoCR_EVENT() {return 3;}
70
71 static const char* XoN_resizeCallback() {static const char* s_s = "resizeCallback";return s_s;}
72 static const char* XoN_paintCallback() {static const char* s_s = "paintCallback";return s_s;}
73 static const char* XoN_eventCallback() {static const char* s_s = "eventCallback";return s_s;}
74 public:
75 static void paint(Widget a_this) {
76 if(!XtIsRealized(a_this)) return;
77 XoAnyCallbackStruct value;
78 value.reason = XoCR_PAINT();
79 value.event = 0;
80 ::XtCallCallbacks(a_this,XoN_paintCallback(),(XtPointer)&value);
81 }
82 protected:
83 static void initialize_class(void) {
84 #ifdef TOOLX_XT_IMAGEAREA_DEBUG
85 ::printf("debug: toolx::Xt::ImageArea: initialize_class.\n");
86 #endif
87 }
88
89 static void initialize_widget(Widget a_request,Widget a_this,ArgList,Cardinal*) {
90 if(a_request->core.width<=0) a_this->core.width = 100;
91 if(a_request->core.height<=0) a_this->core.height = 100;
92
93 #ifdef TOOLX_XT_IMAGEAREA_DEBUG
94 ::printf("debug: toolx::Xt::ImageArea: initialize_widget: %s\n",::XtName(a_this));
95 #endif
96
97 ::XtAddEventHandler
98 (a_this,ButtonPressMask|ButtonReleaseMask|ButtonMotionMask|KeyPressMask|KeyReleaseMask,0,event_handler,NULL);
99
100 #ifdef TOOLX_XT_IMAGEAREA_DEBUG
101 ::printf("debug: toolx::Xt::ImageArea: initialize_widget: end\n");
102 #endif
103 }
104
105 static void destroy_widget(Widget) {
106 #ifdef TOOLX_XT_IMAGEAREA_DEBUG
107 ::printf("debug: toolx::Xt::ImageArea: destroy_widget.\n");
108 #endif
109 }
110
111 static void change_widget_size(Widget a_this) {
112 #ifdef TOOLX_XT_IMAGEAREA_DEBUG
113 ::printf("debug: toolx::Xt::ImageArea: change_widget_size: %s\n",XtName(a_this));
114 #endif
115
116 if(widget_class()->core_class.superclass->core_class.resize!=NULL)
117 (widget_class()->core_class.superclass->core_class.resize)(a_this);
118
119 XoAnyCallbackStruct value;
120 value.reason = XoCR_RESIZE();
121 value.event = 0;
122 ::XtCallCallbacks(a_this,XoN_resizeCallback(),(XtPointer)&value);
123
124 #ifdef TOOLX_XT_IMAGEAREA_DEBUG
125 ::printf("debug: toolx::Xt::ImageArea: change_widget_size: end\n");
126 #endif
127 }
128
129 static void draw_widget(Widget a_this,XEvent* a_event,Region a_region) {
130 #ifdef TOOLX_XT_IMAGEAREA_DEBUG
131 ::printf("debug: toolx::Xt::ImageArea: draw_widget: %s\n",XtName(a_this));
132 #endif
133
134 if(widget_class()->core_class.superclass->core_class.expose!=NULL)
135 (widget_class()->core_class.superclass->core_class.expose)(a_this,a_event,a_region);
136
137 XoAnyCallbackStruct value;
138 value.reason = XoCR_PAINT();
139 value.event = a_event;
140 ::XtCallCallbacks(a_this,XoN_paintCallback(),(XtPointer)&value);
141
142 #ifdef TOOLX_XT_IMAGEAREA_DEBUG
143 ::printf("debug: toolx::Xt::ImageArea: draw_widget: end\n");
144 #endif
145 }
146
147 protected:
148 static void event_handler(Widget a_this,XtPointer,XEvent* a_event ,Boolean*) {
149 XoAnyCallbackStruct value;
150 value.reason = XoCR_EVENT();
151 value.event = a_event;
152 ::XtCallCallbacks(a_this,XoN_eventCallback(),(XtPointer)&value);
153 }
154
155 public:
156 static WidgetClass widget_class() {
157 static XtResource s_resources[] = {
158 {(String)XoN_resizeCallback(),XtCCallback,XtRCallback,sizeof(XtCallbackList),
159 XtOffset(ImageAreaWidget,imageArea.resizeCallback),XtRImmediate,(XtPointer)NULL},
160 {(String)XoN_paintCallback(),XtCCallback,XtRCallback,sizeof(XtCallbackList),
161 XtOffset(ImageAreaWidget,imageArea.paintCallback),XtRImmediate,(XtPointer)NULL},
162 {(String)XoN_eventCallback(),XtCCallback,XtRCallback,sizeof(XtCallbackList),
163 XtOffset(ImageAreaWidget,imageArea.eventCallback),XtRImmediate,(XtPointer)NULL}
164 };
165
166 static ImageAreaClassRec s_imageAreaClassRec = {
167 // Core Class Part :
168 {
169 (WidgetClass) &compositeClassRec, // pointer to superclass ClassRec
170 (String)class_name(), // widget resource class name
171 sizeof(ImageAreaRec), // size in bytes of widget record
172 initialize_class, // class_initialize
173 NULL, // dynamic initialization
174 FALSE, // has class been initialized?
175 initialize_widget, // initialize
176 NULL, // notify that initialize called
177 XtInheritRealize, // XCreateWindow for widget
178 NULL, // widget semantics name to proc mapWidget
179 0, // number of entries in actions
180 s_resources, // resources for subclass fields
181 XtNumber(s_resources), // number of entries in resources
182 NULLQUARK, // resource class quarkified
183 TRUE, // compress MotionNotify for widget
184 TRUE, // compress Expose events for widget
185 TRUE, // compress enter and leave events
186 TRUE, // select for VisibilityNotify
187 destroy_widget, // free data for subclass pointers
188 change_widget_size, // geom manager changed widget size
189 draw_widget, // rediplay window
190 NULL, // set subclass resource values
191 NULL, // notify that SetValues called
192 XtInheritSetValuesAlmost, // SetValues got "Almost" geo reply
193 NULL, // notify that get_values called
194 XtInheritAcceptFocus, // assign input focus to widget
195 XtVersion, // version of intrinsics used
196 NULL, // list of callback offsets
197 XtInheritTranslations, // translations
198 XtInheritQueryGeometry, // return preferred geometry
199 XtInheritDisplayAccelerator, // display your accelerator
200 NULL // pointer to extension record
201 },
202 // Composite Class Part :
203 {
204 XtInheritGeometryManager, // geometry manager for children
205 XtInheritChangeManaged, // change managed state of child
206 XtInheritInsertChild, // physically add child to parent
207 XtInheritDeleteChild, // physically remove child
208 NULL // pointer to extension record
209 },
210 // ImageArea :
211 {
212 NULL
213 }
214 };
215 return (WidgetClass)&s_imageAreaClassRec;
216 }
217 };
218
219 }}
220
221
222 #endif