/////////////////////////////////////////////////////////////////////////////
-// Name: button.cpp
+// Name: msw/button.cpp
// Purpose: wxButton
// Author: Julian Smart
// Modified by:
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
+
#ifdef __GNUG__
#pragma implementation "button.h"
#endif
// macros
// ----------------------------------------------------------------------------
- IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
+IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
// this macro tries to adjust the default button height to a reasonable value
// using the char height as the base
parent->AddChild((wxButton *)this);
- m_backgroundColour = parent->GetBackgroundColour() ;
- m_foregroundColour = parent->GetForegroundColour() ;
+ m_backgroundColour = parent->GetBackgroundColour();
+ m_foregroundColour = parent->GetForegroundColour();
+
m_hWnd = (WXHWND)CreateWindowEx
(
SendMessage(GetWinHwnd(parent), DM_SETDEFID, m_windowId, 0L);
}
- // this doesn't work with bitmap buttons because it also removes the
- // "ownerdrawn" style...
- if ( btnOldDefault && !wxDynamicCast(btnOldDefault, wxBitmapButton) )
+ if ( btnOldDefault )
{
// remove the BS_DEFPUSHBUTTON style from the other button
long style = GetWindowLong(GetHwndOf(btnOldDefault), GWL_STYLE);
- style &= ~BS_DEFPUSHBUTTON;
- SendMessage(GetHwndOf(btnOldDefault), BM_SETSTYLE, style, 1L);
+
+ // don't do it with the owner drawn buttons because it will reset
+ // BS_OWNERDRAW style bit too (BS_OWNERDRAW & BS_DEFPUSHBUTTON != 0)!
+ if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW )
+ {
+ style &= ~BS_DEFPUSHBUTTON;
+ SendMessage(GetHwndOf(btnOldDefault), BM_SETSTYLE, style, 1L);
+ }
+ else
+ {
+ // redraw the button - it will notice itself that it's not the
+ // default one any longer
+ btnOldDefault->Refresh();
+ }
}
// set this button as the default
long style = GetWindowLong(GetHwnd(), GWL_STYLE);
- style |= BS_DEFPUSHBUTTON;
- SendMessage(GetHwnd(), BM_SETSTYLE, style, 1L);
+ if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW )
+ {
+ style |= BS_DEFPUSHBUTTON;
+ SendMessage(GetHwnd(), BM_SETSTYLE, style, 1L);
+ }
}
// ----------------------------------------------------------------------------
long wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
{
- // make sure that we won't have BS_DEFPUSHBUTTON style any more if the
- // focus is being transfered to another button with the same parent -
- // otherwise, we could finish with 2 default buttons inside one panel
- if ( (nMsg == WM_KILLFOCUS) &&
- (GetWindowLong(GetHwnd(), GWL_STYLE) & BS_DEFPUSHBUTTON) )
+ // when we receive focus, we want to become the default button in our
+ // parent panel
+ if ( nMsg == WM_SETFOCUS )
{
- wxWindow *parent = GetParent();
- wxWindow *win = wxFindWinFromHandle((WXHWND)wParam);
- if ( win && win->GetParent() == parent )
- {
- wxPanel *panel = wxDynamicCast(parent, wxPanel);
- if ( panel )
- {
- panel->SetDefaultItem(this);
- }
- // else: I don't know what to do - we'll still have the problem
- // with multiple default buttons in a dialog...
- }
+ SetDefault();
+
+ // let the default processign take place too
}
// let the base class do all real processing
return wxControl::MSWWindowProc(nMsg, wParam, lParam);
}
+
+// ----------------------------------------------------------------------------
+// owner-drawn buttons support
+// ----------------------------------------------------------------------------
+
+#ifdef __WIN32__
+
+// drawing helpers
+
+static void DrawButtonText(HDC hdc,
+ RECT *pRect,
+ const wxString& text,
+ COLORREF col)
+{
+ COLORREF colOld = SetTextColor(hdc, col);
+ int modeOld = SetBkMode(hdc, TRANSPARENT);
+
+ DrawText(hdc, text, text.length(), pRect,
+ DT_CENTER | DT_VCENTER | DT_SINGLELINE);
+
+ SetBkMode(hdc, modeOld);
+ SetTextColor(hdc, colOld);
+}
+
+static void DrawRect(HDC hdc, const RECT& r)
+{
+ MoveToEx(hdc, r.left, r.top, NULL);
+ LineTo(hdc, r.right, r.top);
+ LineTo(hdc, r.right, r.bottom);
+ LineTo(hdc, r.left, r.bottom);
+ LineTo(hdc, r.left, r.top);
+}
+
+void wxButton::MakeOwnerDrawn()
+{
+ long style = GetWindowLong(GetHwnd(), GWL_STYLE);
+ if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW )
+ {
+ // make it so
+ style |= BS_OWNERDRAW;
+ SetWindowLong(GetHwnd(), GWL_STYLE, style);
+ }
+}
+
+bool wxButton::SetBackgroundColour(const wxColour &colour)
+{
+ if ( !wxControl::SetBackgroundColour(colour) )
+ {
+ // nothing to do
+ return FALSE;
+ }
+
+ MakeOwnerDrawn();
+
+ Refresh();
+
+ return TRUE;
+}
+
+bool wxButton::SetForegroundColour(const wxColour &colour)
+{
+ if ( !wxControl::SetForegroundColour(colour) )
+ {
+ // nothing to do
+ return FALSE;
+ }
+
+ MakeOwnerDrawn();
+
+ Refresh();
+
+ return TRUE;
+}
+
+/*
+ The button frame looks like this normally:
+
+ WWWWWWWWWWWWWWWWWWB
+ W GB
+ W GB
+ W GB where W, G, B are white, grey and black pixels
+ W GB
+ WGGGGGGGGGGGGGGGGGB
+ BBBBBBBBBBBBBBBBBBB
+
+ When the button is selected, the button becomes like this (the total button
+ size doesn't change):
+
+ BBBBBBBBBBBBBBBBBBB
+ BWWWWWWWWWWWWWWWWBB
+ BW GBB
+ BW GBB
+ BWGGGGGGGGGGGGGGGBB
+ BBBBBBBBBBBBBBBBBBB
+ BBBBBBBBBBBBBBBBBBB
+
+ When the button is pushed (while selected) it is like:
+
+ BBBBBBBBBBBBBBBBBBB
+ BGGGGGGGGGGGGGGGGGB
+ BG GB
+ BG GB
+ BG GB
+ BGGGGGGGGGGGGGGGGGB
+ BBBBBBBBBBBBBBBBBBB
+*/
+
+static void DrawButtonFrame(HDC hdc, const RECT& rectBtn,
+ bool selected, bool pushed)
+{
+ RECT r;
+ CopyRect(&r, &rectBtn);
+
+ HPEN hpenBlack = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DDKSHADOW)),
+ hpenGrey = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DSHADOW)),
+ hpenWhite = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DHILIGHT));
+
+ HPEN hpenOld = (HPEN)SelectObject(hdc, hpenBlack);
+
+ r.right--;
+ r.bottom--;
+
+ if ( pushed )
+ {
+ DrawRect(hdc, r);
+
+ (void)SelectObject(hdc, hpenGrey);
+ InflateRect(&r, -1, -1);
+
+ DrawRect(hdc, r);
+ }
+ else // !pushed
+ {
+ if ( selected )
+ {
+ DrawRect(hdc, r);
+
+ InflateRect(&r, -1, -1);
+ }
+
+ MoveToEx(hdc, r.left, r.bottom, NULL);
+ LineTo(hdc, r.right, r.bottom);
+ LineTo(hdc, r.right, r.top - 1);
+
+ (void)SelectObject(hdc, hpenWhite);
+ MoveToEx(hdc, r.left, r.bottom - 1, NULL);
+ LineTo(hdc, r.left, r.top);
+ LineTo(hdc, r.right, r.top);
+
+ (void)SelectObject(hdc, hpenGrey);
+ MoveToEx(hdc, r.left + 1, r.bottom - 1, NULL);
+ LineTo(hdc, r.right - 1, r.bottom - 1);
+ LineTo(hdc, r.right - 1, r.top);
+ }
+
+ (void)SelectObject(hdc, hpenOld);
+ DeleteObject(hpenWhite);
+ DeleteObject(hpenGrey);
+ DeleteObject(hpenBlack);
+}
+
+bool wxButton::MSWOnDraw(WXDRAWITEMSTRUCT *wxdis)
+{
+ LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT)wxdis;
+
+ RECT rectBtn;
+ CopyRect(&rectBtn, &lpDIS->rcItem);
+
+ COLORREF colBg = wxColourToRGB(GetBackgroundColour()),
+ colFg = wxColourToRGB(GetForegroundColour());
+
+ HDC hdc = lpDIS->hDC;
+ UINT state = lpDIS->itemState;
+
+ // first, draw the background
+ HBRUSH hbrushBackground = ::CreateSolidBrush(colBg);
+
+ FillRect(hdc, &rectBtn, hbrushBackground);
+
+ // draw the border for the current state
+ bool selected = (state & ODS_SELECTED) != 0;
+ if ( !selected )
+ {
+ wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
+ if ( panel )
+ {
+ selected = panel->GetDefaultItem() == this;
+ }
+ }
+ bool pushed = (SendMessage(GetHwnd(), BM_GETSTATE, 0, 0) & BST_PUSHED) != 0;
+
+ DrawButtonFrame(hdc, rectBtn, selected, pushed);
+
+ // draw the focus rect if needed
+ if ( state & ODS_FOCUS )
+ {
+ RECT rectFocus;
+ CopyRect(&rectFocus, &rectBtn);
+
+ // I don't know where does this constant come from, but this is how
+ // Windows draws them
+ InflateRect(&rectFocus, -4, -4);
+
+ DrawFocusRect(hdc, &rectFocus);
+ }
+
+ if ( pushed )
+ {
+ // the label is shifted by 1 pixel to create "pushed" effect
+ OffsetRect(&rectBtn, 1, 1);
+ }
+
+ DrawButtonText(hdc, &rectBtn, GetLabel(),
+ state & ODS_DISABLED ? GetSysColor(COLOR_GRAYTEXT)
+ : colFg);
+
+ ::DeleteObject(hbrushBackground);
+
+ return TRUE;
+}
+
+#endif // __WIN32__
projects / wxWidgets.git / blobdiff