+wxCOMPILE_TIME_ASSERT(wxCHK_UNCHECKED == BST_UNCHECKED
+ && wxCHK_CHECKED == BST_CHECKED
+ && wxCHK_UNDETERMINED == BST_INDETERMINATE, EnumValuesIncorrect);
+
+void wxCheckBox::DoSet3StateValue(wxCheckBoxState state)
+{
+ m_state = state;
+ if ( !IsOwnerDrawn() )
+ ::SendMessage(GetHwnd(), BM_SETCHECK, (WPARAM) state, 0);
+ else // owner drawn buttons don't react to this message
+ Refresh();
+}
+
+wxCheckBoxState wxCheckBox::DoGet3StateValue() const
+{
+ return m_state;
+}
+
+bool wxCheckBox::MSWCommand(WXUINT cmd, WXWORD WXUNUSED(id))
+{
+ if ( cmd != BN_CLICKED && cmd != BN_DBLCLK )
+ return false;
+
+ // first update the value so that user event handler gets the new checkbox
+ // value
+
+ // ownerdrawn buttons don't manage their state themselves unlike usual
+ // auto checkboxes so do it ourselves in any case
+ wxCheckBoxState state;
+ if ( Is3rdStateAllowedForUser() )
+ {
+ state = (wxCheckBoxState)((m_state + 1) % 3);
+ }
+ else // 2 state checkbox (at least from users point of view)
+ {
+ // note that wxCHK_UNDETERMINED also becomes unchecked when clicked
+ state = m_state == wxCHK_UNCHECKED ? wxCHK_CHECKED : wxCHK_UNCHECKED;
+ }
+
+ DoSet3StateValue(state);
+
+
+ // generate the event
+ wxCommandEvent event(wxEVT_CHECKBOX, m_windowId);
+
+ event.SetInt(state);
+ event.SetEventObject(this);
+ ProcessCommand(event);
+
+ return true;
+}
+
+// ----------------------------------------------------------------------------
+// owner drawn checkboxes stuff
+// ----------------------------------------------------------------------------
+
+bool wxCheckBox::SetForegroundColour(const wxColour& colour)
+{
+ if ( !wxCheckBoxBase::SetForegroundColour(colour) )
+ return false;
+
+ // the only way to change the checkbox foreground colour under Windows XP
+ // is to owner draw it
+ if ( wxUxThemeEngine::GetIfActive() )
+ MSWMakeOwnerDrawn(colour.IsOk());
+
+ return true;
+}
+
+bool wxCheckBox::IsOwnerDrawn() const
+{
+ return
+ (::GetWindowLong(GetHwnd(), GWL_STYLE) & BS_OWNERDRAW) == BS_OWNERDRAW;
+}
+
+void wxCheckBox::MSWMakeOwnerDrawn(bool ownerDrawn)
+{
+ long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
+
+ // note that BS_CHECKBOX & BS_OWNERDRAW != 0 so we can't operate on
+ // them as on independent style bits
+ if ( ownerDrawn )
+ {
+ style &= ~(BS_CHECKBOX | BS_3STATE);
+ style |= BS_OWNERDRAW;
+
+ Connect(wxEVT_ENTER_WINDOW,
+ wxMouseEventHandler(wxCheckBox::OnMouseEnterOrLeave));
+ Connect(wxEVT_LEAVE_WINDOW,
+ wxMouseEventHandler(wxCheckBox::OnMouseEnterOrLeave));
+ Connect(wxEVT_LEFT_DOWN, wxMouseEventHandler(wxCheckBox::OnMouseLeft));
+ Connect(wxEVT_LEFT_UP, wxMouseEventHandler(wxCheckBox::OnMouseLeft));
+ Connect(wxEVT_SET_FOCUS, wxFocusEventHandler(wxCheckBox::OnFocus));
+ Connect(wxEVT_KILL_FOCUS, wxFocusEventHandler(wxCheckBox::OnFocus));
+ }
+ else // reset to default colour
+ {
+ style &= ~BS_OWNERDRAW;
+ style |= HasFlag(wxCHK_3STATE) ? BS_3STATE : BS_CHECKBOX;
+
+ Disconnect(wxEVT_ENTER_WINDOW,
+ wxMouseEventHandler(wxCheckBox::OnMouseEnterOrLeave));
+ Disconnect(wxEVT_LEAVE_WINDOW,
+ wxMouseEventHandler(wxCheckBox::OnMouseEnterOrLeave));
+ Disconnect(wxEVT_LEFT_DOWN, wxMouseEventHandler(wxCheckBox::OnMouseLeft));
+ Disconnect(wxEVT_LEFT_UP, wxMouseEventHandler(wxCheckBox::OnMouseLeft));
+ Disconnect(wxEVT_SET_FOCUS, wxFocusEventHandler(wxCheckBox::OnFocus));
+ Disconnect(wxEVT_KILL_FOCUS, wxFocusEventHandler(wxCheckBox::OnFocus));
+ }
+
+ ::SetWindowLong(GetHwnd(), GWL_STYLE, style);
+
+ if ( !ownerDrawn )
+ {
+ // ensure that controls state is consistent with internal state
+ DoSet3StateValue(m_state);
+ }
+}
+
+void wxCheckBox::OnMouseEnterOrLeave(wxMouseEvent& event)
+{
+ m_isHot = event.GetEventType() == wxEVT_ENTER_WINDOW;
+ if ( !m_isHot )
+ m_isPressed = false;
+
+ Refresh();
+
+ event.Skip();
+}
+
+void wxCheckBox::OnMouseLeft(wxMouseEvent& event)
+{
+ // TODO: we should capture the mouse here to be notified about left up
+ // event but this interferes with BN_CLICKED generation so if we
+ // want to do this we'd need to generate them ourselves
+ m_isPressed = event.GetEventType() == wxEVT_LEFT_DOWN;
+ Refresh();
+
+ event.Skip();
+}
+
+void wxCheckBox::OnFocus(wxFocusEvent& event)
+{
+ Refresh();
+
+ event.Skip();
+}
+
+bool wxCheckBox::MSWOnDraw(WXDRAWITEMSTRUCT *item)
+{
+ DRAWITEMSTRUCT *dis = (DRAWITEMSTRUCT *)item;
+
+ if ( !IsOwnerDrawn() || dis->CtlType != ODT_BUTTON )
+ return wxCheckBoxBase::MSWOnDraw(item);
+
+ // calculate the rectangles for the check mark itself and the label
+ HDC hdc = dis->hDC;
+ RECT& rect = dis->rcItem;
+ RECT rectCheck,
+ rectLabel;
+ rectLabel.top = rect.top + (rect.bottom - rect.top - GetBestSize().y) / 2;
+ rectLabel.bottom = rectLabel.top + GetBestSize().y;
+ const int MARGIN = 3;
+ const int CXMENUCHECK = ::GetSystemMetrics(SM_CXMENUCHECK);
+ // the space between the checkbox and the label is included in the
+ // check-mark bitmap
+ const int checkSize = wxMin(CXMENUCHECK - MARGIN, GetSize().y);
+ rectCheck.top = rect.top + (rect.bottom - rect.top - checkSize) / 2;
+ rectCheck.bottom = rectCheck.top + checkSize;
+
+ const bool isRightAligned = HasFlag(wxALIGN_RIGHT);
+ if ( isRightAligned )
+ {
+ rectLabel.right = rect.right - CXMENUCHECK;
+ rectLabel.left = rect.left;
+
+ rectCheck.left = rectLabel.right + ( CXMENUCHECK + MARGIN - checkSize ) / 2;
+ rectCheck.right = rectCheck.left + checkSize;
+ }
+ else // normal, left-aligned checkbox
+ {
+ rectCheck.left = rect.left + ( CXMENUCHECK - MARGIN - checkSize ) / 2;
+ rectCheck.right = rectCheck.left + checkSize;
+
+ rectLabel.left = rect.left + CXMENUCHECK;
+ rectLabel.right = rect.right;
+ }
+
+ // shall we draw a focus rect?
+ const bool isFocused = m_isPressed || FindFocus() == this;
+
+
+ // draw the checkbox itself
+ wxDCTemp dc(hdc);
+
+ int flags = 0;
+ if ( !IsEnabled() )
+ flags |= wxCONTROL_DISABLED;
+ switch ( Get3StateValue() )
+ {
+ case wxCHK_CHECKED:
+ flags |= wxCONTROL_CHECKED;
+ break;
+
+ case wxCHK_UNDETERMINED:
+ flags |= wxCONTROL_PRESSED;
+ break;
+
+ default:
+ wxFAIL_MSG( wxT("unexpected Get3StateValue() return value") );
+ // fall through
+
+ case wxCHK_UNCHECKED:
+ // no extra styles needed
+ break;
+ }
+
+ if ( wxFindWindowAtPoint(wxGetMousePosition()) == this )
+ flags |= wxCONTROL_CURRENT;
+
+ wxRendererNative::Get().
+ DrawCheckBox(this, dc, wxRectFromRECT(rectCheck), flags);
+
+ // draw the text
+ const wxString& label = GetLabel();
+
+ // first we need to measure it
+ UINT fmt = DT_NOCLIP;
+
+ // drawing underlying doesn't look well with focus rect (and the native
+ // control doesn't do it)
+ if ( isFocused )
+ fmt |= DT_HIDEPREFIX;
+ if ( isRightAligned )
+ fmt |= DT_RIGHT;
+ // TODO: also use DT_HIDEPREFIX if the system is configured so
+
+ // we need to get the label real size first if we have to draw a focus rect
+ // around it
+ if ( isFocused )
+ {
+ RECT oldLabelRect = rectLabel; // needed if right aligned
+
+ if ( !::DrawText(hdc, label.t_str(), label.length(), &rectLabel,
+ fmt | DT_CALCRECT) )
+ {
+ wxLogLastError(wxT("DrawText(DT_CALCRECT)"));
+ }
+
+ if ( isRightAligned )
+ {
+ // move the label rect to the right
+ const int labelWidth = rectLabel.right - rectLabel.left;
+ rectLabel.right = oldLabelRect.right;
+ rectLabel.left = rectLabel.right - labelWidth;
+ }
+ }
+
+ if ( !IsEnabled() )
+ {
+ ::SetTextColor(hdc, ::GetSysColor(COLOR_GRAYTEXT));
+ }
+
+ if ( !::DrawText(hdc, label.t_str(), label.length(), &rectLabel, fmt) )
+ {
+ wxLogLastError(wxT("DrawText()"));
+ }
+
+ // finally draw the focus
+ if ( isFocused )
+ {
+ rectLabel.left--;
+ rectLabel.right++;
+ if ( !::DrawFocusRect(hdc, &rectLabel) )
+ {
+ wxLogLastError(wxT("DrawFocusRect()"));
+ }
+ }
+
+ return true;
+}
+
projects / wxWidgets.git / blobdiff