1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
///////////////////////////////////////////////////////////////////////////////
// Name: tests/waitforpaint.h
// Purpose: Helper WaitForPaint class
// Author: Vadim Zeitlin
// Created: 2019-10-17 (extracted from tests/window/setsize.cpp)
// Copyright: (c) 2019 Vadim Zeitlin <vadim@wxwidgets.org>
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_TESTS_WAITFORPAINT_H_
#define _WX_TESTS_WAITFORPAINT_H_
#include "wx/stopwatch.h"
#include "wx/window.h"
// Class used to check if we received the (first) paint event: this is
// currently used under GTK only, as MSW doesn't seem to need to wait for the
// things to work, while under Mac nothing works anyhow.
#ifdef __WXGTK__
class WaitForPaint
{
public:
explicit WaitForPaint(wxWindow* win)
: m_win(*win),
m_painted(false),
m_handler(&m_painted)
{
m_win.Bind(wxEVT_PAINT, m_handler);
}
// This function waits up to the given number of milliseconds for the paint
// event to come and logs a warning if we didn't get it.
void YieldUntilPainted(int timeoutInMS = 250)
{
wxStopWatch sw;
for ( ;; )
{
wxYield();
if ( m_painted )
{
// Reset it in case YieldUntilPainted() is called again.
m_painted = false;
break;
}
if ( sw.Time() > timeoutInMS )
{
WARN("Didn't get a paint event until timeout expiration");
break;
}
}
}
~WaitForPaint()
{
m_win.Unbind(wxEVT_PAINT, m_handler);
}
private:
wxWindow& m_win;
bool m_painted;
class PaintHandler
{
public:
// Note that we have to use a pointer here, i.e. we can't just store
// the flag inside the class itself because it's going to be cloned
// inside wx and querying the flag of the original copy wouldtn' work.
explicit PaintHandler(bool* painted)
: m_painted(*painted)
{
}
void operator()(wxPaintEvent& event)
{
event.Skip();
m_painted = true;
}
private:
bool& m_painted;
} m_handler;
};
#else // !__WXGTK__
class WaitForPaint
{
public:
explicit WaitForPaint(wxWindow* WXUNUSED(win))
{
}
void YieldUntilPainted(int WXUNUSED(timeoutInMS) = 250)
{
}
};
#endif // __WXGTK__/!__WXGTK__
#endif // _WX_TESTS_WAITFORPAINT_H_
|
