]> git.saurik.com Git - wxWidgets.git/blame - src/generic/caret.cpp
added possibility to throw different objects and crash directly from the main frame...
[wxWidgets.git] / src / generic / caret.cpp
CommitLineData
0290598f 1///////////////////////////////////////////////////////////////////////////////
f6bcfd97
BP
2// Name: generic/caret.cpp
3// Purpose: generic wxCaret class implementation
0290598f
VZ
4// Author: Vadim Zeitlin (original code by Robert Roebling)
5// Modified by:
6// Created: 25.05.99
7// RCS-ID: $Id$
77ffb593 8// Copyright: (c) wxWidgets team
65571936 9// Licence: wxWindows licence
0290598f
VZ
10///////////////////////////////////////////////////////////////////////////////
11
12// ============================================================================
13// declarations
14// ============================================================================
15
16// ----------------------------------------------------------------------------
17// headers
18// ----------------------------------------------------------------------------
19
14f355c2 20#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
f6bcfd97 21 #pragma implementation "caret.h"
0290598f
VZ
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
697e0cdd
VZ
31#if wxUSE_CARET
32
0290598f 33#ifndef WX_PRECOMP
e179bd65
RR
34 #include "wx/window.h"
35 #include "wx/dcclient.h"
f4b8bf2f 36 #include "wx/dcmemory.h"
0290598f
VZ
37#endif //WX_PRECOMP
38
39#include "wx/caret.h"
40
41// ----------------------------------------------------------------------------
42// global variables for this module
43// ----------------------------------------------------------------------------
44
45// the blink time (common to all carets for MSW compatibility)
46static int gs_blinkTime = 500; // in milliseconds
47
48// ============================================================================
49// implementation
50// ============================================================================
51
f6bcfd97
BP
52// ----------------------------------------------------------------------------
53// timer stuff
54// ----------------------------------------------------------------------------
55
ca65c044
WS
56wxCaretTimer::wxCaretTimer(wxCaret *caret)
57{
58 m_caret = caret;
e4628635
RR
59}
60
ca65c044
WS
61void wxCaretTimer::Notify()
62{
63 m_caret->OnTimer();
f6bcfd97
BP
64}
65
66void wxCaret::OnTimer()
67{
68 // don't blink the caret when we don't have the focus
69 if ( m_hasFocus )
70 Blink();
e4628635
RR
71}
72
0290598f
VZ
73// ----------------------------------------------------------------------------
74// wxCaret static functions and data
75// ----------------------------------------------------------------------------
76
0290598f
VZ
77int wxCaretBase::GetBlinkTime()
78{
79 return gs_blinkTime;
80}
81
82void wxCaretBase::SetBlinkTime(int milliseconds)
83{
84 gs_blinkTime = milliseconds;
85}
86
87// ----------------------------------------------------------------------------
88// initialization and destruction
89// ----------------------------------------------------------------------------
90
91void wxCaret::InitGeneric()
92{
ca65c044
WS
93 m_hasFocus = true;
94 m_blinkedOut = true;
f4b8bf2f
VZ
95
96 m_xOld =
97 m_yOld = -1;
98 m_bmpUnderCaret.Create(m_width, m_height);
0290598f
VZ
99}
100
101wxCaret::~wxCaret()
102{
103 if ( IsVisible() )
104 {
105 // stop blinking
697e0cdd
VZ
106 if ( m_timer.IsRunning() )
107 m_timer.Stop();
0290598f
VZ
108 }
109}
110
111// ----------------------------------------------------------------------------
112// showing/hiding/moving the caret (base class interface)
113// ----------------------------------------------------------------------------
114
115void wxCaret::DoShow()
116{
697e0cdd
VZ
117 int blinkTime = GetBlinkTime();
118 if ( blinkTime )
119 m_timer.Start(blinkTime);
0290598f 120
ca5b5b49
VS
121 if ( m_blinkedOut )
122 Blink();
0290598f
VZ
123}
124
125void wxCaret::DoHide()
126{
127 m_timer.Stop();
128
129 if ( !m_blinkedOut )
130 {
131 Blink();
132 }
133}
134
135void wxCaret::DoMove()
136{
697e0cdd 137 if ( IsVisible() )
0290598f 138 {
697e0cdd
VZ
139 if ( !m_blinkedOut )
140 {
141 // hide it right now and it will be shown the next time it blinks
f4b8bf2f
VZ
142 Blink();
143
144 // but if the caret is not blinking, we should blink it back into
145 // visibility manually
146 if ( !m_timer.IsRunning() )
697e0cdd 147 Blink();
697e0cdd 148 }
0290598f 149 }
697e0cdd 150 //else: will be shown at the correct location when it is shown
0290598f
VZ
151}
152
c328d0ad
VZ
153void wxCaret::DoSize()
154{
155 int countVisible = m_countVisible;
156 if (countVisible > 0)
157 {
158 m_countVisible = 0;
159 DoHide();
160 }
161 // Change bitmap size
162 m_bmpUnderCaret = wxBitmap(m_width, m_height);
163 if (countVisible > 0)
164 {
165 m_countVisible = countVisible;
166 DoShow();
167 }
168}
169
f6bcfd97
BP
170// ----------------------------------------------------------------------------
171// handling the focus
172// ----------------------------------------------------------------------------
173
174void wxCaret::OnSetFocus()
175{
ca65c044 176 m_hasFocus = true;
f6bcfd97 177
b6e8d5a3
VS
178 if ( IsVisible() )
179 Refresh();
f6bcfd97
BP
180}
181
182void wxCaret::OnKillFocus()
183{
ca65c044 184 m_hasFocus = false;
f6bcfd97
BP
185
186 if ( IsVisible() )
187 {
188 // the caret must be shown - otherwise, if it is hidden now, it will
189 // stay so until the focus doesn't return because it won't blink any
190 // more
f6bcfd97 191
f4b8bf2f
VZ
192 // hide it first if it isn't hidden ...
193 if ( !m_blinkedOut )
194 Blink();
195
196 // .. and show it in the new style
197 Blink();
198 }
f6bcfd97
BP
199}
200
0290598f
VZ
201// ----------------------------------------------------------------------------
202// drawing the caret
203// ----------------------------------------------------------------------------
204
205void wxCaret::Blink()
206{
207 m_blinkedOut = !m_blinkedOut;
208
f6bcfd97
BP
209 Refresh();
210}
211
212void wxCaret::Refresh()
213{
f4b8bf2f
VZ
214 wxClientDC dcWin(GetWindow());
215 wxMemoryDC dcMem;
216 dcMem.SelectObject(m_bmpUnderCaret);
217 if ( m_blinkedOut )
0290598f 218 {
f4b8bf2f
VZ
219 // restore the old image
220 dcWin.Blit(m_xOld, m_yOld, m_width, m_height,
221 &dcMem, 0, 0);
222 m_xOld =
223 m_yOld = -1;
0290598f
VZ
224 }
225 else
226 {
f4b8bf2f
VZ
227 if ( m_xOld == -1 && m_yOld == -1 )
228 {
229 // save the part we're going to overdraw
1e6feb95
VZ
230
231 int x = m_x,
232 y = m_y;
233#if defined(__WXGTK__) && !defined(__WX_DC_BLIT_FIXED__)
234 wxPoint pt = dcWin.GetDeviceOrigin();
235 x += pt.x;
236 y += pt.y;
237#endif // broken wxGTK wxDC::Blit
f4b8bf2f 238 dcMem.Blit(0, 0, m_width, m_height,
1e6feb95
VZ
239 &dcWin, x, y);
240
f4b8bf2f
VZ
241 m_xOld = m_x;
242 m_yOld = m_y;
243 }
244 //else: we already saved the image below the caret, don't do it any
245 // more
f6bcfd97 246
f4b8bf2f
VZ
247 // and draw the caret there
248 DoDraw(&dcWin);
0290598f
VZ
249 }
250}
251
252void wxCaret::DoDraw(wxDC *dc)
253{
254 dc->SetPen( *wxBLACK_PEN );
f6bcfd97 255
f4b8bf2f
VZ
256 dc->SetBrush(*(m_hasFocus ? wxBLACK_BRUSH : wxTRANSPARENT_BRUSH));
257 dc->SetPen(*wxBLACK_PEN);
258
259 // VZ: unfortunately, the rectangle comes out a pixel smaller when this is
260 // done under wxGTK - no idea why
261 //dc->SetLogicalFunction(wxINVERT);
262
263 dc->DrawRectangle(m_x, m_y, m_width, m_height);
0290598f 264}
697e0cdd
VZ
265
266#endif // wxUSE_CARET