tbx  0.7.3
redrawlistener.h
1 /*
2  * tbx RISC OS toolbox library
3  *
4  * Copyright (C) 2010 Alan Buckley All Rights Reserved.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included
14  * in all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22  * THE SOFTWARE.
23  */
24 
25 #ifndef REDRAWLISTENER_H_
26 #define REDRAWLISTENER_H_
27 
28 #include "listener.h"
29 #include "eventinfo.h"
30 #include "bbox.h"
31 #include "pollinfo.h"
32 #include "visiblearea.h"
33 
34 namespace tbx
35 {
44  {
45  public:
53  EventInfo(id_block, poll_block)
54  {
55  }
56 
61  const VisibleArea &visible_area() const {return *reinterpret_cast<const VisibleArea *>(&_data.word[1]);}
62 
66  const BBox &clip() const {return *reinterpret_cast<const BBox *>(&_data.word[7]);}
67  };
68 
75  class RedrawListener : public Listener
76  {
77  public:
87  virtual void redraw(const RedrawEvent &e) = 0;
88  };
89 }
90 
91 #endif /* REDRAWLISTENER_H_ */
RedrawEvent(IdBlock &id_block, PollBlock &poll_block)
Construct the event from Toolbox and WIMP event data.
Definition: redrawlistener.h:52
PollBlock & _data
raw data from the event
Definition: eventinfo.h:53
Class to represent a two dimensional bounding box.
Definition: bbox.h:37
Structure holding the raw data from a call to Wimp_Poll.
Definition: pollinfo.h:71
const BBox & clip() const
The graphics clip in screen coordinates.
Definition: redrawlistener.h:66
const VisibleArea & visible_area() const
The visible area class giving details or screen area and scroll offset.
Definition: redrawlistener.h:61
Event passed to redraw listener to give details on the area that needs a redraw.
Definition: redrawlistener.h:43
Class to store information for the Visible area of a window and provide work area to screen conversio...
Definition: visiblearea.h:36
Class to provide information on a toolbox event.
Definition: eventinfo.h:48
Redraw event listener.
Definition: redrawlistener.h:75
Base class for all toolbox event listeners.
Definition: listener.h:33
int word[64]
Array containing information return from Wimp_Poll.
Definition: pollinfo.h:76
const IdBlock & id_block() const
IdBlock for the current event.
Definition: eventinfo.h:71
Information passed back by the Toolbox with each toolbox event providing information on where the eve...
Definition: pollinfo.h:41
virtual void redraw(const RedrawEvent &e)=0
Override this function and repaint the area of window required.