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1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: univ/spinbutt.cpp
3 // Purpose: implementation of the universal version of wxSpinButton
4 // Author: Vadim Zeitlin
5 // Modified by:
6 // Created: 21.01.01
7 // RCS-ID: $Id$
8 // Copyright: (c) 2001 SciTech Software, Inc. (www.scitechsoft.com)
9 // Licence: wxWindows licence
10 ///////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 #include "wx/wxprec.h"
21
22 #ifdef __BORLANDC__
23 #pragma hdrstop
24 #endif
25
26 #ifndef WX_PRECOMP
27 #endif
28
29 #include "wx/spinbutt.h"
30
31 #if wxUSE_SPINBTN
32
33 #include "wx/univ/renderer.h"
34 #include "wx/univ/inphand.h"
35 #include "wx/univ/theme.h"
36
37 // ============================================================================
38 // implementation of wxSpinButton
39 // ============================================================================
40
41 // ----------------------------------------------------------------------------
42 // creation
43 // ----------------------------------------------------------------------------
44
45 #ifdef __VISUALC__
46 // warning C4355: 'this' : used in base member initializer list
47 #pragma warning(disable:4355) // so what? disable it...
48 #endif
49
50 wxSpinButton::wxSpinButton()
51 : m_arrows(this)
52 {
53 Init();
54 }
55
56 wxSpinButton::wxSpinButton(wxWindow *parent,
57 wxWindowID id,
58 const wxPoint& pos,
59 const wxSize& size,
60 long style,
61 const wxString& name)
62 : m_arrows(this)
63 {
64 Init();
65
66 (void)Create(parent, id, pos, size, style, name);
67 }
68
69 #ifdef __VISUALC__
70 // warning C4355: 'this' : used in base member initializer list
71 #pragma warning(default:4355)
72 #endif
73
74 void wxSpinButton::Init()
75 {
76 for ( size_t n = 0; n < WXSIZEOF(m_arrowsState); n++ )
77 {
78 m_arrowsState[n] = 0;
79 }
80
81 m_value = 0;
82 }
83
84 bool wxSpinButton::Create(wxWindow *parent,
85 wxWindowID id,
86 const wxPoint& pos,
87 const wxSize& size,
88 long style,
89 const wxString& name)
90 {
91 // the spin buttons never have the border
92 style &= ~wxBORDER_MASK;
93
94 if ( !wxSpinButtonBase::Create(parent, id, pos, size, style,
95 wxDefaultValidator, name) )
96 return false;
97
98 SetInitialSize(size);
99
100 CreateInputHandler(wxINP_HANDLER_SPINBTN);
101
102 return true;
103 }
104
105 // ----------------------------------------------------------------------------
106 // value access
107 // ----------------------------------------------------------------------------
108
109 void wxSpinButton::SetRange(int minVal, int maxVal)
110 {
111 wxSpinButtonBase::SetRange(minVal, maxVal);
112
113 // because the arrows disabled state might have changed - we don't check if
114 // it really changed or not because SetRange() is called rarely enough and
115 // son an extre refresh here doesn't really hurt
116 Refresh();
117 }
118
119 int wxSpinButton::GetValue() const
120 {
121 return m_value;
122 }
123
124 void wxSpinButton::SetValue(int val)
125 {
126 if ( val != m_value )
127 {
128 m_value = val;
129
130 Refresh();
131 }
132 }
133
134 int wxSpinButton::NormalizeValue(int value) const
135 {
136 if ( value > m_max )
137 {
138 if ( GetWindowStyleFlag() & wxSP_WRAP )
139 value = m_min + (value - m_max - 1) % (m_max - m_min + 1);
140 else
141 value = m_max;
142 }
143 else if ( value < m_min )
144 {
145 if ( GetWindowStyleFlag() & wxSP_WRAP )
146 value = m_max - (m_min - value - 1) % (m_max - m_min + 1);
147 else
148 value = m_min;
149 }
150
151 return value;
152 }
153
154 bool wxSpinButton::ChangeValue(int inc)
155 {
156 int valueNew = NormalizeValue(m_value + inc);
157
158 if ( valueNew == m_value )
159 {
160 // nothing changed - most likely because we are already at min/max
161 // value
162 return false;
163 }
164
165 wxSpinEvent event(inc > 0 ? wxEVT_SCROLL_LINEUP : wxEVT_SCROLL_LINEDOWN,
166 GetId());
167 event.SetPosition(valueNew);
168 event.SetEventObject(this);
169
170 if ( GetEventHandler()->ProcessEvent(event) && !event.IsAllowed() )
171 {
172 // programm has vetoed the event
173 return false;
174 }
175
176 m_value = valueNew;
177
178 // send wxEVT_SCROLL_THUMBTRACK as well
179 event.SetEventType(wxEVT_SCROLL_THUMBTRACK);
180 (void)GetEventHandler()->ProcessEvent(event);
181
182 return true;
183 }
184
185 // ----------------------------------------------------------------------------
186 // size calculations
187 // ----------------------------------------------------------------------------
188
189 wxSize wxSpinButton::DoGetBestClientSize() const
190 {
191 // a spin button has by default the same size as two scrollbar arrows put
192 // together
193 wxSize size = m_renderer->GetScrollbarArrowSize();
194 if ( IsVertical() )
195 {
196 size.y *= 2;
197 }
198 else
199 {
200 size.x *= 2;
201 }
202
203 return size;
204 }
205
206 // ----------------------------------------------------------------------------
207 // wxControlWithArrows methods
208 // ----------------------------------------------------------------------------
209
210 int wxSpinButton::GetArrowState(wxScrollArrows::Arrow arrow) const
211 {
212 int state = m_arrowsState[arrow];
213
214 // the arrow may also be disabled: either because the control is completely
215 // disabled
216 bool disabled = !IsEnabled();
217
218 if ( !disabled && !(GetWindowStyleFlag() & wxSP_WRAP) )
219 {
220 // ... or because we can't go any further - note that this never
221 // happens if we just wrap
222 if ( IsVertical() )
223 {
224 if ( arrow == wxScrollArrows::Arrow_First )
225 disabled = m_value == m_max;
226 else
227 disabled = m_value == m_min;
228 }
229 else // horizontal
230 {
231 if ( arrow == wxScrollArrows::Arrow_First )
232 disabled = m_value == m_min;
233 else
234 disabled = m_value == m_max;
235 }
236 }
237
238 if ( disabled )
239 {
240 state |= wxCONTROL_DISABLED;
241 }
242
243 return state;
244 }
245
246 void wxSpinButton::SetArrowFlag(wxScrollArrows::Arrow arrow, int flag, bool set)
247 {
248 int state = m_arrowsState[arrow];
249 if ( set )
250 state |= flag;
251 else
252 state &= ~flag;
253
254 if ( state != m_arrowsState[arrow] )
255 {
256 m_arrowsState[arrow] = state;
257 Refresh();
258 }
259 }
260
261 bool wxSpinButton::OnArrow(wxScrollArrows::Arrow arrow)
262 {
263 int valueOld = GetValue();
264
265 wxControlAction action;
266 if ( arrow == wxScrollArrows::Arrow_First )
267 action = IsVertical() ? wxACTION_SPIN_INC : wxACTION_SPIN_DEC;
268 else
269 action = IsVertical() ? wxACTION_SPIN_DEC : wxACTION_SPIN_INC;
270
271 PerformAction(action);
272
273 // did we scroll to the end?
274 return GetValue() != valueOld;
275 }
276
277 // ----------------------------------------------------------------------------
278 // drawing
279 // ----------------------------------------------------------------------------
280
281 void wxSpinButton::DoDraw(wxControlRenderer *renderer)
282 {
283 wxRect rectArrow1, rectArrow2;
284 CalcArrowRects(&rectArrow1, &rectArrow2);
285
286 wxDC& dc = renderer->GetDC();
287 m_arrows.DrawArrow(wxScrollArrows::Arrow_First, dc, rectArrow1);
288 m_arrows.DrawArrow(wxScrollArrows::Arrow_Second, dc, rectArrow2);
289 }
290
291 // ----------------------------------------------------------------------------
292 // geometry
293 // ----------------------------------------------------------------------------
294
295 void wxSpinButton::CalcArrowRects(wxRect *rect1, wxRect *rect2) const
296 {
297 // calculate the rectangles for both arrows: note that normally the 2
298 // arrows are adjacent to each other but if the total control width/height
299 // is odd, we can have 1 pixel between them
300 wxRect rectTotal = GetClientRect();
301
302 *rect1 =
303 *rect2 = rectTotal;
304 if ( IsVertical() )
305 {
306 rect1->height /= 2;
307 rect2->height /= 2;
308
309 rect2->y += rect1->height;
310 if ( rectTotal.height % 2 )
311 rect2->y++;
312 }
313 else // horizontal
314 {
315 rect1->width /= 2;
316 rect2->width /= 2;
317
318 rect2->x += rect1->width;
319 if ( rectTotal.width % 2 )
320 rect2->x++;
321 }
322 }
323
324 wxScrollArrows::Arrow wxSpinButton::HitTestArrow(const wxPoint& pt) const
325 {
326 wxRect rectArrow1, rectArrow2;
327 CalcArrowRects(&rectArrow1, &rectArrow2);
328
329 if ( rectArrow1.Contains(pt) )
330 return wxScrollArrows::Arrow_First;
331 else if ( rectArrow2.Contains(pt) )
332 return wxScrollArrows::Arrow_Second;
333 else
334 return wxScrollArrows::Arrow_None;
335 }
336
337 // ----------------------------------------------------------------------------
338 // input processing
339 // ----------------------------------------------------------------------------
340
341 bool wxSpinButton::PerformAction(const wxControlAction& action,
342 long numArg,
343 const wxString& strArg)
344 {
345 if ( action == wxACTION_SPIN_INC )
346 ChangeValue(+1);
347 else if ( action == wxACTION_SPIN_DEC )
348 ChangeValue(-1);
349 else
350 return wxControl::PerformAction(action, numArg, strArg);
351
352 return true;
353 }
354
355 /* static */
356 wxInputHandler *wxSpinButton::GetStdInputHandler(wxInputHandler *handlerDef)
357 {
358 static wxStdSpinButtonInputHandler s_handler(handlerDef);
359
360 return &s_handler;
361 }
362
363 // ----------------------------------------------------------------------------
364 // wxStdSpinButtonInputHandler
365 // ----------------------------------------------------------------------------
366
367 wxStdSpinButtonInputHandler::
368 wxStdSpinButtonInputHandler(wxInputHandler *inphand)
369 : wxStdInputHandler(inphand)
370 {
371 }
372
373 bool wxStdSpinButtonInputHandler::HandleKey(wxInputConsumer *consumer,
374 const wxKeyEvent& event,
375 bool pressed)
376 {
377 if ( pressed )
378 {
379 wxControlAction action;
380 switch ( event.GetKeyCode() )
381 {
382 case WXK_DOWN:
383 case WXK_RIGHT:
384 action = wxACTION_SPIN_DEC;
385 break;
386
387 case WXK_UP:
388 case WXK_LEFT:
389 action = wxACTION_SPIN_INC;
390 break;
391 }
392
393 if ( !action.IsEmpty() )
394 {
395 consumer->PerformAction(action);
396
397 return true;
398 }
399 }
400
401 return wxStdInputHandler::HandleKey(consumer, event, pressed);
402 }
403
404 bool wxStdSpinButtonInputHandler::HandleMouse(wxInputConsumer *consumer,
405 const wxMouseEvent& event)
406 {
407 wxSpinButton *spinbtn = wxStaticCast(consumer->GetInputWindow(), wxSpinButton);
408
409 if ( spinbtn->GetArrows().HandleMouse(event) )
410 {
411 // don't refresh, everything is already done
412 return false;
413 }
414
415 return wxStdInputHandler::HandleMouse(consumer, event);
416 }
417
418 bool wxStdSpinButtonInputHandler::HandleMouseMove(wxInputConsumer *consumer,
419 const wxMouseEvent& event)
420 {
421 wxSpinButton *spinbtn = wxStaticCast(consumer->GetInputWindow(), wxSpinButton);
422
423 if ( spinbtn->GetArrows().HandleMouseMove(event) )
424 {
425 // processed by the arrows
426 return false;
427 }
428
429 return wxStdInputHandler::HandleMouseMove(consumer, event);
430 }
431
432
433 #endif // wxUSE_SPINBTN