1 /////////////////////////////////////////////////////////////////////////////
2 // Name: univ/button.cpp
4 // Author: Vadim Zeitlin
8 // Copyright: (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
12 // ============================================================================
14 // ============================================================================
16 // ----------------------------------------------------------------------------
18 // ----------------------------------------------------------------------------
20 #include "wx/wxprec.h"
29 #include "wx/dcclient.h"
30 #include "wx/dcscreen.h"
31 #include "wx/button.h"
32 #include "wx/validate.h"
33 #include "wx/settings.h"
36 #include "wx/univ/renderer.h"
37 #include "wx/univ/inphand.h"
38 #include "wx/univ/theme.h"
39 #include "wx/univ/colschem.h"
40 #include "wx/stockitem.h"
42 // ----------------------------------------------------------------------------
43 // wxStdButtonInputHandler: translates SPACE and ENTER keys and the left mouse
44 // click into button press/release actions
45 // ----------------------------------------------------------------------------
47 class WXDLLEXPORT wxStdButtonInputHandler : public wxStdInputHandler
50 wxStdButtonInputHandler(wxInputHandler *inphand);
52 virtual bool HandleKey(wxInputConsumer *consumer,
53 const wxKeyEvent& event,
55 virtual bool HandleMouse(wxInputConsumer *consumer,
56 const wxMouseEvent& event);
57 virtual bool HandleMouseMove(wxInputConsumer *consumer,
58 const wxMouseEvent& event);
59 virtual bool HandleFocus(wxInputConsumer *consumer,
60 const wxFocusEvent& event);
61 virtual bool HandleActivation(wxInputConsumer *consumer, bool activated);
64 // the window (button) which has capture or NULL and the flag telling if
65 // the mouse is inside the button which captured it or not
66 wxWindow *m_winCapture;
70 // ----------------------------------------------------------------------------
72 // ----------------------------------------------------------------------------
74 // default margins around the image
75 static const wxCoord DEFAULT_BTN_MARGIN_X = 0; // We should give space for the border, at least.
76 static const wxCoord DEFAULT_BTN_MARGIN_Y = 0;
78 // ============================================================================
80 // ============================================================================
82 IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
84 // ----------------------------------------------------------------------------
86 // ----------------------------------------------------------------------------
94 bool wxButton::Create(wxWindow *parent,
96 const wxBitmap& bitmap,
101 const wxValidator& validator,
102 const wxString &name)
105 if (label.empty() && wxIsStockID(id))
106 label = wxGetStockLabel(id);
108 long ctrl_style = style & ~wxBU_ALIGN_MASK;
109 ctrl_style = ctrl_style & ~wxALIGN_MASK;
111 if((style & wxBU_RIGHT) == wxBU_RIGHT)
112 ctrl_style |= wxALIGN_RIGHT;
113 else if((style & wxBU_LEFT) == wxBU_LEFT)
114 ctrl_style |= wxALIGN_LEFT;
116 ctrl_style |= wxALIGN_CENTRE_HORIZONTAL;
118 if((style & wxBU_TOP) == wxBU_TOP)
119 ctrl_style |= wxALIGN_TOP;
120 else if((style & wxBU_BOTTOM) == wxBU_BOTTOM)
121 ctrl_style |= wxALIGN_BOTTOM;
123 ctrl_style |= wxALIGN_CENTRE_VERTICAL;
125 if ( !wxControl::Create(parent, id, pos, size, ctrl_style, validator, name) )
131 SetImageLabel(bitmap); // SetInitialSize called by SetImageLabel()
133 SetInitialSize(size);
135 CreateInputHandler(wxINP_HANDLER_BUTTON);
140 wxButton::~wxButton()
144 // ----------------------------------------------------------------------------
146 // ----------------------------------------------------------------------------
149 wxSize wxButtonBase::GetDefaultSize()
151 static wxSize s_sizeBtn;
153 if ( s_sizeBtn.x == 0 )
157 // this corresponds more or less to wxMSW standard in Win32 theme (see
158 // wxWin32Renderer::AdjustSize())
159 // s_sizeBtn.x = 8*dc.GetCharWidth();
160 // s_sizeBtn.y = (11*dc.GetCharHeight())/10 + 2;
161 // Otto Wyss, Patch 664399
162 s_sizeBtn.x = dc.GetCharWidth()*10 + 2;
163 s_sizeBtn.y = dc.GetCharHeight()*11/10 + 2;
169 wxSize wxButton::DoGetBestClientSize() const
171 wxClientDC dc(wxConstCast(this, wxButton));
172 wxCoord width, height;
173 dc.GetMultiLineTextExtent(GetLabel(), &width, &height);
177 // allocate extra space for the bitmap
178 wxCoord heightBmp = m_bitmap.GetHeight() + 2*m_marginBmpY;
179 if ( height < heightBmp )
182 width += m_bitmap.GetWidth() + 2*m_marginBmpX;
185 // The default size should not be adjusted, so the code is moved into the
186 // renderer. This is conceptual wrong but currently the only solution.
187 // (Otto Wyss, Patch 664399)
190 // for compatibility with other ports, the buttons default size is never
191 // less than the standard one, but not when display not PDAs.
192 if (wxSystemSettings::GetScreenType() > wxSYS_SCREEN_PDA)
194 if ( !(GetWindowStyle() & wxBU_EXACTFIT) )
196 wxSize szDef = GetDefaultSize();
197 if ( width < szDef.x )
202 return wxSize(width, height);
205 // ----------------------------------------------------------------------------
207 // ----------------------------------------------------------------------------
209 void wxButton::DoDraw(wxControlRenderer *renderer)
211 if ( !(GetWindowStyle() & wxBORDER_NONE) )
213 renderer->DrawButtonBorder();
216 renderer->DrawLabel(m_bitmap, m_marginBmpX, m_marginBmpY);
219 bool wxButton::DoDrawBackground(wxDC& dc)
222 wxSize size = GetSize();
224 rect.height = size.y;
226 if ( GetBackgroundBitmap().Ok() )
228 // get the bitmap and the flags
231 wxBitmap bmp = GetBackgroundBitmap(&alignment, &stretch);
232 wxControlRenderer::DrawBitmap(dc, bmp, rect, alignment, stretch);
236 m_renderer->DrawButtonSurface(dc, wxTHEME_BG_COLOUR(this),
237 rect, GetStateFlags());
243 // ----------------------------------------------------------------------------
245 // ----------------------------------------------------------------------------
247 void wxButton::Press()
257 void wxButton::Release()
267 void wxButton::Toggle()
276 // releasing button after it had been pressed generates a click event
281 void wxButton::Click()
283 wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId());
284 InitCommandEvent(event);
288 bool wxButton::PerformAction(const wxControlAction& action,
290 const wxString& strArg)
292 if ( action == wxACTION_BUTTON_TOGGLE )
294 else if ( action == wxACTION_BUTTON_CLICK )
296 else if ( action == wxACTION_BUTTON_PRESS )
298 else if ( action == wxACTION_BUTTON_RELEASE )
301 return wxControl::PerformAction(action, numArg, strArg);
307 wxInputHandler *wxButton::GetStdInputHandler(wxInputHandler *handlerDef)
309 static wxStdButtonInputHandler s_handlerBtn(handlerDef);
311 return &s_handlerBtn;
314 // ----------------------------------------------------------------------------
316 // ----------------------------------------------------------------------------
318 void wxButton::SetImageLabel(const wxBitmap& bitmap)
322 SetImageMargins(DEFAULT_BTN_MARGIN_X, DEFAULT_BTN_MARGIN_Y);
325 void wxButton::SetImageMargins(wxCoord x, wxCoord y)
327 m_marginBmpX = x + 2;
328 m_marginBmpY = y + 2;
330 SetInitialSize(wxDefaultSize);
333 wxWindow *wxButton::SetDefault()
337 return wxButtonBase::SetDefault();
340 // ============================================================================
341 // wxStdButtonInputHandler
342 // ============================================================================
344 wxStdButtonInputHandler::wxStdButtonInputHandler(wxInputHandler *handler)
345 : wxStdInputHandler(handler)
348 m_winHasMouse = false;
351 bool wxStdButtonInputHandler::HandleKey(wxInputConsumer *consumer,
352 const wxKeyEvent& event,
355 int keycode = event.GetKeyCode();
356 if ( keycode == WXK_SPACE || keycode == WXK_RETURN )
358 consumer->PerformAction(wxACTION_BUTTON_TOGGLE);
363 return wxStdInputHandler::HandleKey(consumer, event, pressed);
366 bool wxStdButtonInputHandler::HandleMouse(wxInputConsumer *consumer,
367 const wxMouseEvent& event)
369 // the button has 2 states: pressed and normal with the following
370 // transitions between them:
372 // normal -> left down -> capture mouse and go to pressed state
373 // pressed -> left up inside -> generate click -> go to normal
374 // outside ------------------>
376 // the other mouse buttons are ignored
377 if ( event.Button(1) )
379 if ( event.LeftDown() || event.LeftDClick() )
381 m_winCapture = consumer->GetInputWindow();
382 m_winCapture->CaptureMouse();
383 m_winHasMouse = true;
385 consumer->PerformAction(wxACTION_BUTTON_PRESS);
389 else if ( event.LeftUp() )
393 m_winCapture->ReleaseMouse();
399 // this will generate a click event
400 consumer->PerformAction(wxACTION_BUTTON_TOGGLE);
404 //else: the mouse was released outside the window, this doesn't
407 //else: don't do anything special about the double click
410 return wxStdInputHandler::HandleMouse(consumer, event);
413 bool wxStdButtonInputHandler::HandleMouseMove(wxInputConsumer *consumer,
414 const wxMouseEvent& event)
416 // we only have to do something when the mouse leaves/enters the pressed
417 // button and don't care about the other ones
418 if ( event.GetEventObject() == m_winCapture )
420 // leaving the button should remove its pressed state
421 if ( event.Leaving() )
423 // remember that the mouse is now outside
424 m_winHasMouse = false;
426 // we do have a pressed button, so release it
427 consumer->GetInputWindow()->SetCurrent(false);
428 consumer->PerformAction(wxACTION_BUTTON_RELEASE);
432 // and entering it back should make it pressed again if it had been
434 else if ( event.Entering() )
436 // the mouse is (back) inside the button
437 m_winHasMouse = true;
439 // we did have a pressed button which we released when leaving the
440 // window, press it again
441 consumer->GetInputWindow()->SetCurrent(true);
442 consumer->PerformAction(wxACTION_BUTTON_PRESS);
448 return wxStdInputHandler::HandleMouseMove(consumer, event);
451 bool wxStdButtonInputHandler::HandleFocus(wxInputConsumer * WXUNUSED(consumer),
452 const wxFocusEvent& WXUNUSED(event))
454 // buttons change appearance when they get/lose focus, so return true to
459 bool wxStdButtonInputHandler::HandleActivation(wxInputConsumer *consumer,
460 bool WXUNUSED(activated))
462 // the default button changes appearance when the app is [de]activated, so
463 // return true to refresh
464 return wxStaticCast(consumer->GetInputWindow(), wxButton)->IsDefault();
467 #endif // wxUSE_BUTTON