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1 | /////////////////////////////////////////////////////////////////////////////// |
2 | // Name: msw/caret.cpp | |
3 | // Purpose: MSW implementation of wxCaret | |
4 | // Author: Vadim Zeitlin | |
5 | // Modified by: | |
6 | // Created: 23.05.99 | |
7 | // RCS-ID: $Id$ | |
77ffb593 | 8 | // Copyright: (c) wxWidgets team |
65571936 | 9 | // Licence: wxWindows licence |
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10 | /////////////////////////////////////////////////////////////////////////////// |
11 | ||
12 | // =========================================================================== | |
13 | // declarations | |
14 | // =========================================================================== | |
15 | ||
16 | // --------------------------------------------------------------------------- | |
17 | // headers | |
18 | // --------------------------------------------------------------------------- | |
19 | ||
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20 | // For compilers that support precompilation, includes "wx.h". |
21 | #include "wx/wxprec.h" | |
22 | ||
23 | #ifdef __BORLANDC__ | |
24 | #pragma hdrstop | |
25 | #endif | |
26 | ||
27 | #ifndef WX_PRECOMP | |
28 | #include "wx/window.h" | |
0c589ad0 | 29 | #include "wx/log.h" |
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30 | #endif // WX_PRECOMP |
31 | ||
32 | #include "wx/caret.h" | |
33 | ||
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34 | #if wxUSE_CARET |
35 | ||
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36 | #include "wx/msw/private.h" |
37 | ||
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38 | // --------------------------------------------------------------------------- |
39 | // macros | |
40 | // --------------------------------------------------------------------------- | |
41 | ||
3a5bcc4d | 42 | #define CALL_CARET_API(api, args) \ |
f6bcfd97 BP |
43 | if ( !api args ) \ |
44 | wxLogLastError(_T(#api)) | |
e8225073 | 45 | |
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46 | // =========================================================================== |
47 | // implementation | |
48 | // =========================================================================== | |
49 | ||
50 | // --------------------------------------------------------------------------- | |
51 | // blink time | |
52 | // --------------------------------------------------------------------------- | |
53 | ||
54 | //static | |
55 | int wxCaretBase::GetBlinkTime() | |
56 | { | |
57 | int blinkTime = ::GetCaretBlinkTime(); | |
58 | if ( !blinkTime ) | |
59 | { | |
f6bcfd97 | 60 | wxLogLastError(wxT("GetCaretBlinkTime")); |
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61 | } |
62 | ||
63 | return blinkTime; | |
64 | } | |
65 | ||
66 | //static | |
67 | void wxCaretBase::SetBlinkTime(int milliseconds) | |
68 | { | |
e8225073 | 69 | CALL_CARET_API(SetCaretBlinkTime, (milliseconds)); |
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70 | } |
71 | ||
72 | // --------------------------------------------------------------------------- | |
73 | // creating/destroying the caret | |
74 | // --------------------------------------------------------------------------- | |
75 | ||
76 | bool wxCaret::MSWCreateCaret() | |
77 | { | |
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78 | wxASSERT_MSG( GetWindow(), wxT("caret without window cannot be created") ); |
79 | wxASSERT_MSG( IsOk(), wxT("caret of zero size cannot be created") ); | |
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80 | |
81 | if ( !m_hasCaret ) | |
82 | { | |
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83 | CALL_CARET_API(CreateCaret, (GetWinHwnd(GetWindow()), 0, |
84 | m_width, m_height)); | |
85 | ||
02b7b6b0 | 86 | m_hasCaret = true; |
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87 | } |
88 | ||
89 | return m_hasCaret; | |
90 | } | |
91 | ||
92 | void wxCaret::OnSetFocus() | |
93 | { | |
94 | if ( m_countVisible > 0 ) | |
95 | { | |
96 | if ( MSWCreateCaret() ) | |
97 | { | |
98 | // the caret was recreated but it doesn't remember its position and | |
99 | // it's not shown | |
100 | ||
101 | DoMove(); | |
102 | DoShow(); | |
103 | } | |
104 | } | |
105 | //else: caret is invisible, don't waste time creating it | |
106 | } | |
107 | ||
108 | void wxCaret::OnKillFocus() | |
109 | { | |
110 | if ( m_hasCaret ) | |
111 | { | |
02b7b6b0 | 112 | m_hasCaret = false; |
789295bf | 113 | |
e8225073 | 114 | CALL_CARET_API(DestroyCaret, ()); |
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115 | } |
116 | } | |
117 | ||
118 | // --------------------------------------------------------------------------- | |
119 | // showing/hiding the caret | |
120 | // --------------------------------------------------------------------------- | |
121 | ||
122 | void wxCaret::DoShow() | |
123 | { | |
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124 | wxASSERT_MSG( GetWindow(), wxT("caret without window cannot be shown") ); |
125 | wxASSERT_MSG( IsOk(), wxT("caret of zero size cannot be shown") ); | |
789295bf | 126 | |
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127 | // we might not have created the caret yet if we had got the focus first |
128 | // and the caret was shown later - so do it now if we have the focus but | |
129 | // not the caret | |
130 | if ( !m_hasCaret && (wxWindow::FindFocus() == GetWindow()) ) | |
131 | { | |
132 | if ( MSWCreateCaret() ) | |
133 | { | |
134 | DoMove(); | |
135 | } | |
136 | } | |
137 | ||
e8225073 | 138 | if ( m_hasCaret ) |
789295bf | 139 | { |
e8225073 | 140 | CALL_CARET_API(ShowCaret, (GetWinHwnd(GetWindow()))); |
789295bf | 141 | } |
e8225073 | 142 | //else: will be shown when we get the focus |
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143 | } |
144 | ||
145 | void wxCaret::DoHide() | |
146 | { | |
c6eba8f8 | 147 | if ( m_hasCaret ) |
789295bf | 148 | { |
e8225073 | 149 | CALL_CARET_API(HideCaret, (GetWinHwnd(GetWindow()))); |
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150 | } |
151 | } | |
152 | ||
153 | // --------------------------------------------------------------------------- | |
154 | // moving the caret | |
155 | // --------------------------------------------------------------------------- | |
156 | ||
157 | void wxCaret::DoMove() | |
158 | { | |
a8f25787 | 159 | if ( m_hasCaret ) |
789295bf | 160 | { |
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161 | wxASSERT_MSG( wxWindow::FindFocus() == GetWindow(), |
162 | wxT("how did we lose focus?") ); | |
e8225073 | 163 | |
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164 | // for compatibility with the generic version, the coordinates are |
165 | // client ones | |
166 | wxPoint pt = GetWindow()->GetClientAreaOrigin(); | |
167 | CALL_CARET_API(SetCaretPos, (m_x + pt.x, m_y + pt.y)); | |
789295bf | 168 | } |
a8f25787 | 169 | //else: we don't have caret right now, nothing to do (this does happen) |
789295bf | 170 | } |
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171 | |
172 | ||
173 | // --------------------------------------------------------------------------- | |
174 | // resizing the caret | |
175 | // --------------------------------------------------------------------------- | |
176 | ||
177 | void wxCaret::DoSize() | |
178 | { | |
179 | if ( m_hasCaret ) | |
180 | { | |
02b7b6b0 | 181 | m_hasCaret = false; |
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182 | CALL_CARET_API(DestroyCaret, ()); |
183 | MSWCreateCaret(); | |
fa06b433 | 184 | OnSetFocus(); |
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185 | } |
186 | } | |
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187 | |
188 | #endif |