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 // ----------------------------------------------------------------------------
44 // ----------------------------------------------------------------------------
46 // default margins around the image
47 static const wxCoord DEFAULT_BTN_MARGIN_X = 0; // We should give space for the border, at least.
48 static const wxCoord DEFAULT_BTN_MARGIN_Y = 0;
50 // ============================================================================
52 // ============================================================================
54 IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
56 // ----------------------------------------------------------------------------
58 // ----------------------------------------------------------------------------
66 bool wxButton::Create(wxWindow *parent,
68 const wxBitmap& bitmap,
73 const wxValidator& validator,
77 if (label.empty() && wxIsStockID(id))
78 label = wxGetStockLabel(id);
80 long ctrl_style = style & ~wxBU_ALIGN_MASK;
82 wxASSERT_MSG( (ctrl_style & wxALIGN_MASK) == 0,
83 _T("Some style conflicts with align flags") );
85 if((style & wxBU_RIGHT) == wxBU_RIGHT)
86 ctrl_style |= wxALIGN_RIGHT;
87 else if((style & wxBU_LEFT) == wxBU_LEFT)
88 ctrl_style |= wxALIGN_LEFT;
90 ctrl_style |= wxALIGN_CENTRE_HORIZONTAL;
92 if((style & wxBU_TOP) == wxBU_TOP)
93 ctrl_style |= wxALIGN_TOP;
94 else if((style & wxBU_BOTTOM) == wxBU_BOTTOM)
95 ctrl_style |= wxALIGN_BOTTOM;
97 ctrl_style |= wxALIGN_CENTRE_VERTICAL;
99 if ( !wxControl::Create(parent, id, pos, size, ctrl_style, validator, name) )
103 SetImageLabel(bitmap);
104 // SetBestSize(size); -- called by SetImageLabel()
106 CreateInputHandler(wxINP_HANDLER_BUTTON);
111 wxButton::~wxButton()
115 // ----------------------------------------------------------------------------
117 // ----------------------------------------------------------------------------
120 wxSize wxButtonBase::GetDefaultSize()
122 static wxSize s_sizeBtn;
124 if ( s_sizeBtn.x == 0 )
128 // this corresponds more or less to wxMSW standard in Win32 theme (see
129 // wxWin32Renderer::AdjustSize())
130 // s_sizeBtn.x = 8*dc.GetCharWidth();
131 // s_sizeBtn.y = (11*dc.GetCharHeight())/10 + 2;
132 // Otto Wyss, Patch 664399
133 s_sizeBtn.x = dc.GetCharWidth()*10 + 2;
134 s_sizeBtn.y = dc.GetCharHeight()*11/10 + 2;
140 wxSize wxButton::DoGetBestClientSize() const
142 wxClientDC dc(wxConstCast(this, wxButton));
143 wxCoord width, height;
144 dc.GetMultiLineTextExtent(GetLabel(), &width, &height);
148 // allocate extra space for the bitmap
149 wxCoord heightBmp = m_bitmap.GetHeight() + 2*m_marginBmpY;
150 if ( height < heightBmp )
153 width += m_bitmap.GetWidth() + 2*m_marginBmpX;
156 // The default size should not be adjusted, so the code is moved into the
157 // renderer. This is conceptual wrong but currently the only solution.
158 // (Otto Wyss, Patch 664399)
161 // for compatibility with other ports, the buttons default size is never
162 // less than the standard one, but not when display not PDAs.
163 if (wxSystemSettings::GetScreenType() > wxSYS_SCREEN_PDA)
165 if ( !(GetWindowStyle() & wxBU_EXACTFIT) )
167 wxSize szDef = GetDefaultSize();
168 if ( width < szDef.x )
173 return wxSize(width, height);
176 // ----------------------------------------------------------------------------
178 // ----------------------------------------------------------------------------
180 void wxButton::DoDraw(wxControlRenderer *renderer)
182 if ( !(GetWindowStyle() & wxBORDER_NONE) )
184 renderer->DrawButtonBorder();
187 renderer->DrawLabel(m_bitmap, m_marginBmpX, m_marginBmpY);
190 bool wxButton::DoDrawBackground(wxDC& dc)
193 wxSize size = GetSize();
195 rect.height = size.y;
197 if ( GetBackgroundBitmap().Ok() )
199 // get the bitmap and the flags
202 wxBitmap bmp = GetBackgroundBitmap(&alignment, &stretch);
203 wxControlRenderer::DrawBitmap(dc, bmp, rect, alignment, stretch);
207 m_renderer->DrawButtonSurface(dc, wxTHEME_BG_COLOUR(this),
208 rect, GetStateFlags());
214 // ----------------------------------------------------------------------------
216 // ----------------------------------------------------------------------------
218 void wxButton::Press()
228 void wxButton::Release()
238 void wxButton::Toggle()
247 // releasing button after it had been pressed generates a click event
252 void wxButton::Click()
254 wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId());
255 InitCommandEvent(event);
259 bool wxButton::PerformAction(const wxControlAction& action,
261 const wxString& strArg)
263 if ( action == wxACTION_BUTTON_TOGGLE )
265 else if ( action == wxACTION_BUTTON_CLICK )
267 else if ( action == wxACTION_BUTTON_PRESS )
269 else if ( action == wxACTION_BUTTON_RELEASE )
272 return wxControl::PerformAction(action, numArg, strArg);
277 // ----------------------------------------------------------------------------
279 // ----------------------------------------------------------------------------
281 void wxButton::SetImageLabel(const wxBitmap& bitmap)
285 SetImageMargins(DEFAULT_BTN_MARGIN_X, DEFAULT_BTN_MARGIN_Y);
288 void wxButton::SetImageMargins(wxCoord x, wxCoord y)
290 m_marginBmpX = x + 2;
291 m_marginBmpY = y + 2;
293 SetBestSize(wxDefaultSize);
296 void wxButton::SetDefault()
301 // ============================================================================
302 // wxStdButtonInputHandler
303 // ============================================================================
305 wxStdButtonInputHandler::wxStdButtonInputHandler(wxInputHandler *handler)
306 : wxStdInputHandler(handler)
309 m_winHasMouse = false;
312 bool wxStdButtonInputHandler::HandleKey(wxInputConsumer *consumer,
313 const wxKeyEvent& event,
316 int keycode = event.GetKeyCode();
317 if ( keycode == WXK_SPACE || keycode == WXK_RETURN )
319 consumer->PerformAction(wxACTION_BUTTON_TOGGLE);
324 return wxStdInputHandler::HandleKey(consumer, event, pressed);
327 bool wxStdButtonInputHandler::HandleMouse(wxInputConsumer *consumer,
328 const wxMouseEvent& event)
330 // the button has 2 states: pressed and normal with the following
331 // transitions between them:
333 // normal -> left down -> capture mouse and go to pressed state
334 // pressed -> left up inside -> generate click -> go to normal
335 // outside ------------------>
337 // the other mouse buttons are ignored
338 if ( event.Button(1) )
340 if ( event.LeftDown() || event.LeftDClick() )
342 m_winCapture = consumer->GetInputWindow();
343 m_winCapture->CaptureMouse();
344 m_winHasMouse = true;
346 consumer->PerformAction(wxACTION_BUTTON_PRESS);
350 else if ( event.LeftUp() )
354 m_winCapture->ReleaseMouse();
360 // this will generate a click event
361 consumer->PerformAction(wxACTION_BUTTON_TOGGLE);
365 //else: the mouse was released outside the window, this doesn't
368 //else: don't do anything special about the double click
371 return wxStdInputHandler::HandleMouse(consumer, event);
374 bool wxStdButtonInputHandler::HandleMouseMove(wxInputConsumer *consumer,
375 const wxMouseEvent& event)
377 // we only have to do something when the mouse leaves/enters the pressed
378 // button and don't care about the other ones
379 if ( event.GetEventObject() == m_winCapture )
381 // leaving the button should remove its pressed state
382 if ( event.Leaving() )
384 // remember that the mouse is now outside
385 m_winHasMouse = false;
387 // we do have a pressed button, so release it
388 consumer->GetInputWindow()->SetCurrent(false);
389 consumer->PerformAction(wxACTION_BUTTON_RELEASE);
393 // and entering it back should make it pressed again if it had been
395 else if ( event.Entering() )
397 // the mouse is (back) inside the button
398 m_winHasMouse = true;
400 // we did have a pressed button which we released when leaving the
401 // window, press it again
402 consumer->GetInputWindow()->SetCurrent(true);
403 consumer->PerformAction(wxACTION_BUTTON_PRESS);
409 return wxStdInputHandler::HandleMouseMove(consumer, event);
412 bool wxStdButtonInputHandler::HandleFocus(wxInputConsumer * WXUNUSED(consumer),
413 const wxFocusEvent& WXUNUSED(event))
415 // buttons change appearance when they get/lose focus, so return true to
420 bool wxStdButtonInputHandler::HandleActivation(wxInputConsumer *consumer,
421 bool WXUNUSED(activated))
423 // the default button changes appearance when the app is [de]activated, so
424 // return true to refresh
425 return wxStaticCast(consumer->GetInputWindow(), wxButton)->IsDefault();
428 #endif // wxUSE_BUTTON