// 保存父窗口背景。父窗口尺寸变化时需要重新保存。
void CurPokerWnd::SaveParentBackground(void)
{
// 取父窗口DC
HDC parentDC = GetDC(m_hWndParent);
assert(parentDC != NULL);
SaveParentBackground(parentDC);
// 释放父窗口DC
ReleaseDC(m_hWndParent, parentDC);
}
// 绘图
void CurPokerWnd::OnPaint(HDC hdc)
{
#ifdef PARENT_PAINT_CHILD
UNREFERENCED_PARAMETER(hdc);
// Parent window will paint me. Do nothing...
#else
if (m_bReloadBkBitmap == TRUE) {
SaveParentBackground();
m_bReloadBkBitmap = FALSE;
}
if (m_bHorizontal == TRUE) {
PaintHorizontally(hdc);
} else {
PaintVertically(hdc);
}
#endif
}
//=============================================================================
void CXButtonXP::DrawItem(LPDRAWITEMSTRUCT lpDIS)
//=============================================================================
{
CDC *pDC = CDC::FromHandle(lpDIS->hDC);
CRect rectItem = lpDIS->rcItem;
// set up for double buffering
CDC memDC;
memDC.CreateCompatibleDC(pDC);
CBitmap bmp;
bmp.CreateCompatibleBitmap(pDC, rectItem.Width(), rectItem.Height());
CBitmap *pOldBitmap = memDC.SelectObject(&bmp);
// initialize dc from existing dc
memDC.BitBlt(0, 0, rectItem.Width(), rectItem.Height(),
pDC, 0, 0, SRCCOPY);
memDC.SetBkMode(TRANSPARENT);
if (m_bFirstTime)
{
// open theme for Button
m_bFirstTime = FALSE;
if (ThemeHelper.IsThemeLibAvailable())
{
if (m_hTheme)
ThemeHelper.CloseThemeData(m_hTheme);
m_hTheme = NULL;
if (m_bDrawToolbar)
{
m_hTheme = ThemeHelper.OpenThemeData(m_hWnd, _T("Toolbar"));
}
else
{
m_hTheme = ThemeHelper.OpenThemeData(m_hWnd, _T("Button"));
}
}
SaveParentBackground();
}
CFont *pFont = GetParent()->GetFont();
if (pFont)
memDC.SelectObject(pFont);
// button state
// get the button's title
CString strTitle = _T("");
GetWindowText(strTitle);
BOOL bHasText = !strTitle.IsEmpty();
BOOL bIsFocused = lpDIS->itemState & ODS_FOCUS;
BOOL bIsDisabled = lpDIS->itemState & ODS_DISABLED;
BOOL bDrawFocusRect = !(lpDIS->itemState & ODS_NOFOCUSRECT);
BOOL bIsPressed = lpDIS->itemState & ODS_SELECTED;
BOOL bIsDefault = IsDefault();
BOOL bIsThemed = IsThemed();
BOOL bCustomColors = (m_crBackground != XBUTTONXP_NO_COLOR) ||
(m_crText != XBUTTONXP_NO_COLOR);
if (bCustomColors)
{
bIsThemed = FALSE;
}
if (m_bIsToggle)
{
if (m_bLButtonDown && !m_bMouseOverButton)
{
// left mouse button is down outside button
bIsPressed = !m_bToggled;
}
else
{
bIsPressed = m_bToggled;
}
}
if (m_bDrawToolbar)
{
// restore parent window bits
memDC.BitBlt(0, 0, m_rectButton.Width(), m_rectButton.Height(),
&m_dcParent, 0, 0, SRCCOPY);
bIsFocused = FALSE;
bIsDefault = FALSE;
}
if (bIsThemed)
{
DWORD state = bIsPressed ? PBS_PRESSED : PBS_NORMAL;
if (bIsDisabled)
{
state = PBS_DISABLED;
}
else if (state == PBS_NORMAL)
{
if (bIsFocused || bIsDefault)
{
state = PBS_DEFAULTED;
}
if (m_bMouseOverButton)
state = PBS_HOT;
}
ThemeHelper.DrawThemeParentBackground(m_hWnd, memDC.m_hDC, &rectItem);
ThemeHelper.DrawThemeBackground(m_hTheme, memDC.m_hDC, BP_PUSHBUTTON, state, &rectItem, NULL);
}
else // not themed
{
CBrush brBackground;
if (m_crBackground == XBUTTONXP_NO_COLOR)
brBackground.CreateSolidBrush(GetSysColor(COLOR_BTNFACE));
else
brBackground.CreateSolidBrush(m_crBackground);
if (!m_bDrawToolbar || bCustomColors)
{
// fill in background, if custom color or not toolbar
CRect rectClient(rectItem);
InflateRect(&rectClient, -1, -1);
memDC.FillRect(&rectClient, &brBackground);
}
if (bIsFocused || bIsDefault)
{
if (!m_bIsToggle || !bIsPressed)
{
CBrush brush(RGB(0,0,0));
memDC.FrameRect(&rectItem, &brush);
}
InflateRect(&rectItem, -1, -1);
}
// draw the traditional pushbutton edge
if (bIsPressed)
{
memDC.DrawEdge(&rectItem, EDGE_SUNKEN, BF_RECT);
}
else if (!m_bDrawToolbar)
{
memDC.DrawEdge(&rectItem, EDGE_RAISED, BF_RECT);
}
}
CRect rectDraw = lpDIS->rcItem;
// draw the icon
DrawIcon(&memDC, bHasText, rectItem, rectDraw, bIsPressed, bIsThemed,
bIsDisabled);
// draw the button title (if any)
if (bHasText)
{
DrawText(&memDC, strTitle, rectDraw, bIsPressed, bIsThemed,
bIsDisabled);
}
// draw the focus rect
if (bIsFocused && bDrawFocusRect)
{
CRect rectFocus = rectItem;
if (m_pDropDownMenu)
rectFocus.right = rectFocus.right - MENUBTN_WIDTH + 1;
if (!bIsThemed && bIsPressed)
rectFocus.OffsetRect(1, 1);
rectFocus.InflateRect(-3, -3);
memDC.DrawFocusRect(&rectFocus);
}
if (m_pDropDownMenu)
{
DrawSplit(&memDC, rectItem, bIsPressed, bIsThemed, bIsDisabled);
DrawArrow(&memDC, rectItem, bIsPressed, bIsThemed, bIsDisabled);
}
// end double buffering
pDC->BitBlt(0, 0, rectItem.Width(), rectItem.Height(),
&memDC, 0, 0, SRCCOPY);
// swap back the original bitmap
if (pOldBitmap)
memDC.SelectObject(pOldBitmap);
if (bmp.GetSafeHandle())
bmp.DeleteObject();
memDC.DeleteDC();
}
