| 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: $Id$ |
| 8 | // Copyright: (c) wxWidgets team |
| 9 | // Licence: wxWindows licence |
| 10 | /////////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // =========================================================================== |
| 13 | // declarations |
| 14 | // =========================================================================== |
| 15 | |
| 16 | // --------------------------------------------------------------------------- |
| 17 | // headers |
| 18 | // --------------------------------------------------------------------------- |
| 19 | |
| 20 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) |
| 21 | #pragma implementation "caret.h" |
| 22 | #endif |
| 23 | |
| 24 | // For compilers that support precompilation, includes "wx.h". |
| 25 | #include "wx/wxprec.h" |
| 26 | |
| 27 | #ifdef __BORLANDC__ |
| 28 | #pragma hdrstop |
| 29 | #endif |
| 30 | |
| 31 | #ifndef WX_PRECOMP |
| 32 | #include "wx/window.h" |
| 33 | #include "wx/log.h" |
| 34 | #endif // WX_PRECOMP |
| 35 | |
| 36 | #include "wx/caret.h" |
| 37 | |
| 38 | #if wxUSE_CARET |
| 39 | |
| 40 | #include "wx/msw/private.h" |
| 41 | |
| 42 | // --------------------------------------------------------------------------- |
| 43 | // macros |
| 44 | // --------------------------------------------------------------------------- |
| 45 | |
| 46 | #define CALL_CARET_API(api, args) \ |
| 47 | if ( !api args ) \ |
| 48 | wxLogLastError(_T(#api)) |
| 49 | |
| 50 | // =========================================================================== |
| 51 | // implementation |
| 52 | // =========================================================================== |
| 53 | |
| 54 | // --------------------------------------------------------------------------- |
| 55 | // blink time |
| 56 | // --------------------------------------------------------------------------- |
| 57 | |
| 58 | //static |
| 59 | int wxCaretBase::GetBlinkTime() |
| 60 | { |
| 61 | int blinkTime = ::GetCaretBlinkTime(); |
| 62 | if ( !blinkTime ) |
| 63 | { |
| 64 | wxLogLastError(wxT("GetCaretBlinkTime")); |
| 65 | } |
| 66 | |
| 67 | return blinkTime; |
| 68 | } |
| 69 | |
| 70 | //static |
| 71 | void wxCaretBase::SetBlinkTime(int milliseconds) |
| 72 | { |
| 73 | CALL_CARET_API(SetCaretBlinkTime, (milliseconds)); |
| 74 | } |
| 75 | |
| 76 | // --------------------------------------------------------------------------- |
| 77 | // creating/destroying the caret |
| 78 | // --------------------------------------------------------------------------- |
| 79 | |
| 80 | bool wxCaret::MSWCreateCaret() |
| 81 | { |
| 82 | wxASSERT_MSG( GetWindow(), wxT("caret without window cannot be created") ); |
| 83 | wxASSERT_MSG( IsOk(), wxT("caret of zero size cannot be created") ); |
| 84 | |
| 85 | if ( !m_hasCaret ) |
| 86 | { |
| 87 | CALL_CARET_API(CreateCaret, (GetWinHwnd(GetWindow()), 0, |
| 88 | m_width, m_height)); |
| 89 | |
| 90 | m_hasCaret = true; |
| 91 | } |
| 92 | |
| 93 | return m_hasCaret; |
| 94 | } |
| 95 | |
| 96 | void wxCaret::OnSetFocus() |
| 97 | { |
| 98 | if ( m_countVisible > 0 ) |
| 99 | { |
| 100 | if ( MSWCreateCaret() ) |
| 101 | { |
| 102 | // the caret was recreated but it doesn't remember its position and |
| 103 | // it's not shown |
| 104 | |
| 105 | DoMove(); |
| 106 | DoShow(); |
| 107 | } |
| 108 | } |
| 109 | //else: caret is invisible, don't waste time creating it |
| 110 | } |
| 111 | |
| 112 | void wxCaret::OnKillFocus() |
| 113 | { |
| 114 | if ( m_hasCaret ) |
| 115 | { |
| 116 | m_hasCaret = false; |
| 117 | |
| 118 | CALL_CARET_API(DestroyCaret, ()); |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | // --------------------------------------------------------------------------- |
| 123 | // showing/hiding the caret |
| 124 | // --------------------------------------------------------------------------- |
| 125 | |
| 126 | void wxCaret::DoShow() |
| 127 | { |
| 128 | wxASSERT_MSG( GetWindow(), wxT("caret without window cannot be shown") ); |
| 129 | wxASSERT_MSG( IsOk(), wxT("caret of zero size cannot be shown") ); |
| 130 | |
| 131 | // we might not have created the caret yet if we had got the focus first |
| 132 | // and the caret was shown later - so do it now if we have the focus but |
| 133 | // not the caret |
| 134 | if ( !m_hasCaret && (wxWindow::FindFocus() == GetWindow()) ) |
| 135 | { |
| 136 | if ( MSWCreateCaret() ) |
| 137 | { |
| 138 | DoMove(); |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | if ( m_hasCaret ) |
| 143 | { |
| 144 | CALL_CARET_API(ShowCaret, (GetWinHwnd(GetWindow()))); |
| 145 | } |
| 146 | //else: will be shown when we get the focus |
| 147 | } |
| 148 | |
| 149 | void wxCaret::DoHide() |
| 150 | { |
| 151 | if ( m_hasCaret ) |
| 152 | { |
| 153 | CALL_CARET_API(HideCaret, (GetWinHwnd(GetWindow()))); |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | // --------------------------------------------------------------------------- |
| 158 | // moving the caret |
| 159 | // --------------------------------------------------------------------------- |
| 160 | |
| 161 | void wxCaret::DoMove() |
| 162 | { |
| 163 | if ( m_hasCaret ) |
| 164 | { |
| 165 | wxASSERT_MSG( wxWindow::FindFocus() == GetWindow(), |
| 166 | wxT("how did we lose focus?") ); |
| 167 | |
| 168 | // for compatibility with the generic version, the coordinates are |
| 169 | // client ones |
| 170 | wxPoint pt = GetWindow()->GetClientAreaOrigin(); |
| 171 | CALL_CARET_API(SetCaretPos, (m_x + pt.x, m_y + pt.y)); |
| 172 | } |
| 173 | //else: we don't have caret right now, nothing to do (this does happen) |
| 174 | } |
| 175 | |
| 176 | |
| 177 | // --------------------------------------------------------------------------- |
| 178 | // resizing the caret |
| 179 | // --------------------------------------------------------------------------- |
| 180 | |
| 181 | void wxCaret::DoSize() |
| 182 | { |
| 183 | if ( m_hasCaret ) |
| 184 | { |
| 185 | m_hasCaret = false; |
| 186 | CALL_CARET_API(DestroyCaret, ()); |
| 187 | MSWCreateCaret(); |
| 188 | OnSetFocus(); |
| 189 | } |
| 190 | } |
| 191 | |
| 192 | #endif |