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1 | /////////////////////////////////////////////////////////////////////////////// | |
2 | // Name: generic/caret.h | |
3 | // Purpose: generic wxCaret class | |
4 | // Author: Vadim Zeitlin (original code by Robert Roebling) | |
5 | // Modified by: | |
6 | // Created: 25.05.99 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) wxWindows team | |
9 | // Licence: wxWindows licence | |
10 | /////////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | // ============================================================================ | |
13 | // declarations | |
14 | // ============================================================================ | |
15 | ||
16 | // ---------------------------------------------------------------------------- | |
17 | // headers | |
18 | // ---------------------------------------------------------------------------- | |
19 | ||
20 | #ifdef __GNUG__ | |
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/dcclient.h" | |
34 | #endif //WX_PRECOMP | |
35 | ||
36 | #include "wx/caret.h" | |
37 | ||
38 | // ---------------------------------------------------------------------------- | |
39 | // global variables for this module | |
40 | // ---------------------------------------------------------------------------- | |
41 | ||
42 | // the blink time (common to all carets for MSW compatibility) | |
43 | static int gs_blinkTime = 500; // in milliseconds | |
44 | ||
45 | // ============================================================================ | |
46 | // implementation | |
47 | // ============================================================================ | |
48 | ||
49 | wxCaretTimer::wxCaretTimer(wxCaret *caret) | |
50 | { | |
51 | m_caret = caret; | |
52 | } | |
53 | ||
54 | void wxCaretTimer::Notify() | |
55 | { | |
56 | m_caret->Blink(); | |
57 | } | |
58 | ||
59 | // ---------------------------------------------------------------------------- | |
60 | // wxCaret static functions and data | |
61 | // ---------------------------------------------------------------------------- | |
62 | ||
63 | ||
64 | int wxCaretBase::GetBlinkTime() | |
65 | { | |
66 | return gs_blinkTime; | |
67 | } | |
68 | ||
69 | void wxCaretBase::SetBlinkTime(int milliseconds) | |
70 | { | |
71 | gs_blinkTime = milliseconds; | |
72 | } | |
73 | ||
74 | // ---------------------------------------------------------------------------- | |
75 | // initialization and destruction | |
76 | // ---------------------------------------------------------------------------- | |
77 | ||
78 | void wxCaret::InitGeneric() | |
79 | { | |
80 | } | |
81 | ||
82 | wxCaret::~wxCaret() | |
83 | { | |
84 | if ( IsVisible() ) | |
85 | { | |
86 | // stop blinking | |
87 | m_timer.Stop(); | |
88 | } | |
89 | } | |
90 | ||
91 | // ---------------------------------------------------------------------------- | |
92 | // showing/hiding/moving the caret (base class interface) | |
93 | // ---------------------------------------------------------------------------- | |
94 | ||
95 | void wxCaret::DoShow() | |
96 | { | |
97 | m_timer.Start(GetBlinkTime()); | |
98 | ||
99 | m_blinkedOut = TRUE; | |
100 | Blink(); | |
101 | } | |
102 | ||
103 | void wxCaret::DoHide() | |
104 | { | |
105 | m_timer.Stop(); | |
106 | ||
107 | if ( !m_blinkedOut ) | |
108 | { | |
109 | Blink(); | |
110 | } | |
111 | } | |
112 | ||
113 | void wxCaret::DoMove() | |
114 | { | |
115 | if ( IsVisible() && !m_blinkedOut ) | |
116 | { | |
117 | Blink(); | |
118 | } | |
119 | //else: will be shown at the correct location next time it blinks | |
120 | } | |
121 | ||
122 | // ---------------------------------------------------------------------------- | |
123 | // drawing the caret | |
124 | // ---------------------------------------------------------------------------- | |
125 | ||
126 | void wxCaret::Blink() | |
127 | { | |
128 | m_blinkedOut = !m_blinkedOut; | |
129 | ||
130 | wxClientDC dc(GetWindow()); | |
131 | if ( !m_blinkedOut ) | |
132 | { | |
133 | DoDraw(&dc); | |
134 | } | |
135 | else | |
136 | { | |
137 | // FIXME can't be less efficient than this... (+1 needed!) | |
138 | wxRect rect(m_x, m_y, m_width + 1, m_height + 1); | |
139 | GetWindow()->Refresh(FALSE, &rect); | |
140 | } | |
141 | } | |
142 | ||
143 | void wxCaret::DoDraw(wxDC *dc) | |
144 | { | |
145 | dc->SetPen( *wxBLACK_PEN ); | |
146 | dc->DrawLine( m_x, m_y, m_x+m_width, m_y ); | |
147 | dc->DrawLine( m_x, m_y+m_height, m_x+m_width, m_y+m_height ); | |
148 | dc->DrawLine( m_x+(m_width/2), m_y, m_x+(m_width/2), m_y+m_height ); | |
149 | // dc->DrawLine( m_x+(m_width/2)+1, m_y, m_x+(m_width/2)+1, m_y+m_height ); | |
150 | } |