1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/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 // ----------------------------------------------------------------------------
84 // ----------------------------------------------------------------------------
92 bool wxButton::Create(wxWindow *parent,
94 const wxBitmap& bitmap,
99 const wxValidator& validator,
100 const wxString &name)
103 if (label.empty() && wxIsStockID(id))
104 label = wxGetStockLabel(id);
106 long ctrl_style = style & ~wxBU_ALIGN_MASK;
107 ctrl_style = ctrl_style & ~wxALIGN_MASK;
109 if((style & wxBU_RIGHT) == wxBU_RIGHT)
110 ctrl_style |= wxALIGN_RIGHT;
111 else if((style & wxBU_LEFT) == wxBU_LEFT)
112 ctrl_style |= wxALIGN_LEFT;
114 ctrl_style |= wxALIGN_CENTRE_HORIZONTAL;
116 if((style & wxBU_TOP) == wxBU_TOP)
117 ctrl_style |= wxALIGN_TOP;
118 else if((style & wxBU_BOTTOM) == wxBU_BOTTOM)
119 ctrl_style |= wxALIGN_BOTTOM;
121 ctrl_style |= wxALIGN_CENTRE_VERTICAL;
123 if ( !wxControl::Create(parent, id, pos, size, ctrl_style, validator, name) )
129 SetBitmap(bitmap); // SetInitialSize called by SetBitmap()
131 SetInitialSize(size);
133 CreateInputHandler(wxINP_HANDLER_BUTTON);
138 wxButton::~wxButton()
142 // ----------------------------------------------------------------------------
144 // ----------------------------------------------------------------------------
147 wxSize wxButtonBase::GetDefaultSize()
149 static wxSize s_sizeBtn;
151 if ( s_sizeBtn.x == 0 )
155 // this corresponds more or less to wxMSW standard in Win32 theme (see
156 // wxWin32Renderer::AdjustSize())
157 // s_sizeBtn.x = 8*dc.GetCharWidth();
158 // s_sizeBtn.y = (11*dc.GetCharHeight())/10 + 2;
159 // Otto Wyss, Patch 664399
160 s_sizeBtn.x = dc.GetCharWidth()*10 + 2;
161 s_sizeBtn.y = dc.GetCharHeight()*11/10 + 2;
167 wxSize wxButton::DoGetBestClientSize() const
169 wxClientDC dc(wxConstCast(this, wxButton));
170 wxCoord width, height;
171 dc.GetMultiLineTextExtent(GetLabel(), &width, &height);
173 if ( m_bitmap.IsOk() )
175 // allocate extra space for the bitmap
176 wxCoord heightBmp = m_bitmap.GetHeight() + 2*m_marginBmpY;
177 if ( height < heightBmp )
180 width += m_bitmap.GetWidth() + 2*m_marginBmpX;
183 // The default size should not be adjusted, so the code is moved into the
184 // renderer. This is conceptual wrong but currently the only solution.
185 // (Otto Wyss, Patch 664399)
188 // for compatibility with other ports, the buttons default size is never
189 // less than the standard one, but not when display not PDAs.
190 if (wxSystemSettings::GetScreenType() > wxSYS_SCREEN_PDA)
192 if ( !(GetWindowStyle() & wxBU_EXACTFIT) )
194 wxSize szDef = GetDefaultSize();
195 if ( width < szDef.x )
200 return wxSize(width, height);
203 // ----------------------------------------------------------------------------
205 // ----------------------------------------------------------------------------
207 void wxButton::DoDraw(wxControlRenderer *renderer)
209 if ( !(GetWindowStyle() & wxBORDER_NONE) )
211 renderer->DrawButtonBorder();
214 renderer->DrawButtonLabel(m_bitmap, m_marginBmpX, m_marginBmpY);
217 bool wxButton::DoDrawBackground(wxDC& dc)
220 wxSize size = GetSize();
222 rect.height = size.y;
224 if ( GetBackgroundBitmap().IsOk() )
226 // get the bitmap and the flags
229 wxBitmap bmp = GetBackgroundBitmap(&alignment, &stretch);
230 wxControlRenderer::DrawBitmap(dc, bmp, rect, alignment, stretch);
234 m_renderer->DrawButtonSurface(dc, wxTHEME_BG_COLOUR(this),
235 rect, GetStateFlags());
241 // ----------------------------------------------------------------------------
243 // ----------------------------------------------------------------------------
245 void wxButton::Press()
255 void wxButton::Release()
265 void wxButton::Toggle()
274 // releasing button after it had been pressed generates a click event
279 void wxButton::Click()
281 wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId());
282 InitCommandEvent(event);
286 bool wxButton::PerformAction(const wxControlAction& action,
288 const wxString& strArg)
290 if ( action == wxACTION_BUTTON_TOGGLE )
292 else if ( action == wxACTION_BUTTON_CLICK )
294 else if ( action == wxACTION_BUTTON_PRESS )
296 else if ( action == wxACTION_BUTTON_RELEASE )
299 return wxControl::PerformAction(action, numArg, strArg);
305 wxInputHandler *wxButton::GetStdInputHandler(wxInputHandler *handlerDef)
307 static wxStdButtonInputHandler s_handlerBtn(handlerDef);
309 return &s_handlerBtn;
312 // ----------------------------------------------------------------------------
314 // ----------------------------------------------------------------------------
316 void wxButton::DoSetBitmap(const wxBitmap& bitmap, State which)
318 // we support only one bitmap right now, although this wouldn't be
319 // difficult to change
320 if ( which == State_Normal )
323 SetBitmapMargins(DEFAULT_BTN_MARGIN_X, DEFAULT_BTN_MARGIN_Y);
326 void wxButton::DoSetBitmapMargins(wxCoord x, wxCoord y)
328 m_marginBmpX = x + 2;
329 m_marginBmpY = y + 2;
331 SetInitialSize(wxDefaultSize);
334 wxWindow *wxButton::SetDefault()
338 return wxButtonBase::SetDefault();
341 // ============================================================================
342 // wxStdButtonInputHandler
343 // ============================================================================
345 wxStdButtonInputHandler::wxStdButtonInputHandler(wxInputHandler *handler)
346 : wxStdInputHandler(handler)
349 m_winHasMouse = false;
352 bool wxStdButtonInputHandler::HandleKey(wxInputConsumer *consumer,
353 const wxKeyEvent& event,
356 int keycode = event.GetKeyCode();
357 if ( keycode == WXK_SPACE || keycode == WXK_RETURN )
359 consumer->PerformAction(wxACTION_BUTTON_TOGGLE);
364 return wxStdInputHandler::HandleKey(consumer, event, pressed);
367 bool wxStdButtonInputHandler::HandleMouse(wxInputConsumer *consumer,
368 const wxMouseEvent& event)
370 // the button has 2 states: pressed and normal with the following
371 // transitions between them:
373 // normal -> left down -> capture mouse and go to pressed state
374 // pressed -> left up inside -> generate click -> go to normal
375 // outside ------------------>
377 // the other mouse buttons are ignored
378 if ( event.Button(1) )
380 if ( event.LeftDown() || event.LeftDClick() )
382 m_winCapture = consumer->GetInputWindow();
383 m_winCapture->CaptureMouse();
384 m_winHasMouse = true;
386 consumer->PerformAction(wxACTION_BUTTON_PRESS);
390 else if ( event.LeftUp() )
394 m_winCapture->ReleaseMouse();
400 // this will generate a click event
401 consumer->PerformAction(wxACTION_BUTTON_TOGGLE);
405 //else: the mouse was released outside the window, this doesn't
408 //else: don't do anything special about the double click
411 return wxStdInputHandler::HandleMouse(consumer, event);
414 bool wxStdButtonInputHandler::HandleMouseMove(wxInputConsumer *consumer,
415 const wxMouseEvent& event)
417 // we only have to do something when the mouse leaves/enters the pressed
418 // button and don't care about the other ones
419 if ( event.GetEventObject() == m_winCapture )
421 // leaving the button should remove its pressed state
422 if ( event.Leaving() )
424 // remember that the mouse is now outside
425 m_winHasMouse = false;
427 // we do have a pressed button, so release it
428 consumer->GetInputWindow()->SetCurrent(false);
429 consumer->PerformAction(wxACTION_BUTTON_RELEASE);
433 // and entering it back should make it pressed again if it had been
435 else if ( event.Entering() )
437 // the mouse is (back) inside the button
438 m_winHasMouse = true;
440 // we did have a pressed button which we released when leaving the
441 // window, press it again
442 consumer->GetInputWindow()->SetCurrent(true);
443 consumer->PerformAction(wxACTION_BUTTON_PRESS);
449 return wxStdInputHandler::HandleMouseMove(consumer, event);
452 bool wxStdButtonInputHandler::HandleFocus(wxInputConsumer * WXUNUSED(consumer),
453 const wxFocusEvent& WXUNUSED(event))
455 // buttons change appearance when they get/lose focus, so return true to
460 bool wxStdButtonInputHandler::HandleActivation(wxInputConsumer *consumer,
461 bool WXUNUSED(activated))
463 // the default button changes appearance when the app is [de]activated, so
464 // return true to refresh
465 return wxStaticCast(consumer->GetInputWindow(), wxButton)->IsDefault();
468 #endif // wxUSE_BUTTON