// Like UpdateNonClientArea, but sets up a clipping region to just update the system buttons
void cef_dark_window::UpdateNonClientButtons ()
{
// create a simple clipping region
// that only includes the system buttons (min/max/restore/close)
HDC hdc = GetWindowDC();
RECT rectCloseButton ;
ComputeCloseButtonRect (rectCloseButton) ;
RECT rectMaximizeButton ;
ComputeMaximizeButtonRect (rectMaximizeButton) ;
RECT rectMinimizeButton ;
ComputeMinimizeButtonRect (rectMinimizeButton) ;
RECT rectWindow ;
ComputeLogicalWindowRect (rectWindow) ;
::ExcludeClipRect (hdc, rectWindow.left, rectWindow.top, rectWindow.right, rectWindow.bottom);
RECT rectButtons;
rectButtons.top = rectCloseButton.top;
rectButtons.right = rectCloseButton.right;
rectButtons.bottom = rectCloseButton.bottom;
rectButtons.left = rectMinimizeButton.left;
HRGN hrgnUpdate = ::CreateRectRgnIndirect(&rectButtons);
if (::SelectClipRgn(hdc, hrgnUpdate) != NULLREGION) {
DoPaintNonClientArea(hdc);
}
::DeleteObject(hrgnUpdate);
ReleaseDC(hdc);
}
// Computes the Rect where the maximize button is drawn in window coordinates
void cef_dark_window::ComputeMaximizeButtonRect(RECT& rect)
{
ComputeCloseButtonRect(rect);
rect.left -= (mSysMaximizeButton->GetWidth() + 1);
rect.right = rect.left + mSysMaximizeButton->GetWidth();
rect.bottom = rect.top + mSysMaximizeButton->GetHeight();
}
// Draw the System Icons (close/min/max/restore)
void cef_dark_window::DoDrawSystemIcons(HDC hdc)
{
Gdiplus::Image* CloseButton = mSysCloseButton;
Gdiplus::Image* RestoreButton = mSysRestoreButton;
Gdiplus::Image* MinimizeButton = mSysMinimizeButton;
Gdiplus::Image* MaximizeButton = mSysMaximizeButton;
if (mNonClientData.mButtonOver) {
// If the mouse is over or down on a button then
// we need to pick the correct image for that button's state
switch (mNonClientData.mActiveButton)
{
case HTCLOSE:
CloseButton = (mNonClientData.mButtonDown) ? mPressedSysCloseButton : mHoverSysCloseButton;
break;
case HTMAXBUTTON:
RestoreButton = (mNonClientData.mButtonDown) ? mPressedSysRestoreButton : mHoverSysRestoreButton;
MaximizeButton = (mNonClientData.mButtonDown) ? mPressedSysMaximizeButton : mHoverSysMaximizeButton;
break;
case HTMINBUTTON:
MinimizeButton = (mNonClientData.mButtonDown) ? mPressedSysMinimizeButton : mHoverSysMinimizeButton;
break ;
}
}
RECT rcButton;
Gdiplus::Rect rect;
Gdiplus::Graphics grpx(hdc);
ComputeCloseButtonRect(rcButton);
::RECT2Rect(rect, rcButton);
grpx.DrawImage(CloseButton, rect);
ComputeMaximizeButtonRect(rcButton);
::RECT2Rect(rect, rcButton);
if (IsZoomed()) {
grpx.DrawImage(RestoreButton, rect);
} else {
grpx.DrawImage(MaximizeButton, rect);
}
ComputeMinimizeButtonRect(rcButton);
::RECT2Rect(rect, rcButton);
grpx.DrawImage(MinimizeButton, rect);
}
// WM_NCHITTEST handler
int cef_dark_aero_window::HandleNcHitTest(LPPOINT ptHit)
{
RECT rectWindow;
GetWindowRect(&rectWindow);
if (!::PtInRect(&rectWindow, *ptHit))
return HTNOWHERE;
RECT rectCaption;
ComputeWindowCaptionRect(rectCaption);
ClientToScreen(&rectCaption);
if (::PtInRect(&rectCaption, *ptHit))
return HTCAPTION;
RECT rectCloseButton;
ComputeCloseButtonRect(rectCloseButton);
ClientToScreen(&rectCloseButton);
if (::PtInRect(&rectCloseButton, *ptHit))
return HTCLOSE;
RECT rectMaximizeButton;
ComputeMaximizeButtonRect(rectMaximizeButton);
ClientToScreen(&rectMaximizeButton);
if (::PtInRect(&rectMaximizeButton, *ptHit))
return HTMAXBUTTON;
RECT rectMinimizeButton;
ComputeMinimizeButtonRect(rectMinimizeButton);
ClientToScreen(&rectMinimizeButton);
if (::PtInRect(&rectMinimizeButton, *ptHit))
return HTMINBUTTON;
RECT rectSysIcon;
ComputeWindowIconRect(rectSysIcon);
ClientToScreen(&rectSysIcon);
if (::PtInRect(&rectSysIcon, *ptHit))
return HTSYSMENU;
if (!IsZoomed()) {
// Left Border
if (ptHit->x >= rectWindow.left && ptHit->x <= rectWindow.left + ::kWindowFrameSize)
{
// it's important that we know if the mouse is on a corner so that
// the right mouse cursor is displayed
if (ptHit->y <= rectWindow.top + ::kWindowFrameSize)
return HTTOPLEFT;
if (ptHit->y >= rectWindow.bottom - ::kWindowFrameSize)
return HTBOTTOMLEFT;
return HTLEFT;
}
// Right Border
if (ptHit->x <= rectWindow.right && ptHit->x >= rectWindow.right - ::kWindowFrameSize)
{
// it's important that we know if the mouse is on a corner so that
// the right mouse cursor is displayed
if (ptHit->y <= rectWindow.top + ::kWindowFrameSize)
return HTTOPRIGHT;
if (ptHit->y >= rectWindow.bottom - ::kWindowFrameSize)
return HTBOTTOMRIGHT;
return HTRIGHT;
}
// Top and Bottom Borders
if (ptHit->y <= rectWindow.top + ::kWindowFrameSize)
return HTTOP;
if (ptHit->y >= rectWindow.bottom - ::kWindowFrameSize)
return HTBOTTOM;
}
RECT rectMenu;
ComputeRequiredMenuRect(rectMenu);
ClientToScreen(&rectMenu);
if (::PtInRect(&rectMenu, *ptHit))
return HTMENU;
// If it's in the menu bar but not actually
// on a menu item, then return caption so
// the window can be dragged from the dead space
ComputeMenuBarRect(rectMenu);
ClientToScreen(&rectMenu);
if (::PtInRect(&rectMenu, *ptHit))
return HTCAPTION;
// Aero requires that we return HTNOWHERE
return HTNOWHERE;
}
// WM_NCHITTEST handler
int cef_dark_window::HandleNcHitTest(LPPOINT ptHit)
{
RECT rectWindow;
GetWindowRect(&rectWindow);
if (!::PtInRect(&rectWindow, *ptHit))
return HTNOWHERE;
RECT rectClient;
GetClientRect(&rectClient);
ClientToScreen(&rectClient);
if (::PtInRect(&rectClient, *ptHit))
return HTCLIENT;
RECT rectCaption;
ComputeWindowCaptionRect(rectCaption);
NonClientToScreen(&rectCaption);
if (::PtInRect(&rectCaption, *ptHit))
return HTCAPTION;
RECT rectCloseButton;
ComputeCloseButtonRect(rectCloseButton);
NonClientToScreen(&rectCloseButton);
if (::PtInRect(&rectCloseButton, *ptHit))
return HTCLOSE;
RECT rectMaximizeButton;
ComputeMaximizeButtonRect(rectMaximizeButton);
NonClientToScreen(&rectMaximizeButton);
if (::PtInRect(&rectMaximizeButton, *ptHit))
return HTMAXBUTTON;
RECT rectMinimizeButton;
ComputeMinimizeButtonRect(rectMinimizeButton);
NonClientToScreen(&rectMinimizeButton);
if (::PtInRect(&rectMinimizeButton, *ptHit))
return HTMINBUTTON;
RECT rectSysIcon;
ComputeWindowIconRect(rectSysIcon);
NonClientToScreen(&rectSysIcon);
if (::PtInRect(&rectSysIcon, *ptHit))
return HTSYSMENU;
// Left Border
if (ptHit->x >= rectWindow.left && ptHit->x <= rectWindow.left + ::GetSystemMetrics (SM_CYFRAME))
{
// it's important that we know if the mouse is on a corner so that
// the right mouse cursor is displayed
if (ptHit->y <= rectWindow.top + ::GetSystemMetrics (SM_CYFRAME))
return HTTOPLEFT;
if (ptHit->y >= rectWindow.bottom - ::GetSystemMetrics (SM_CYFRAME))
return HTBOTTOMLEFT;
return HTLEFT;
}
// Right Border
if (ptHit->x <= rectWindow.right && ptHit->x >= rectWindow.right - ::GetSystemMetrics (SM_CYFRAME))
{
// it's important that we know if the mouse is on a corner so that
// the right mouse cursor is displayed
if (ptHit->y <= rectWindow.top + ::GetSystemMetrics (SM_CYFRAME))
return HTTOPRIGHT;
if (ptHit->y >= rectWindow.bottom - ::GetSystemMetrics (SM_CYFRAME))
return HTBOTTOMRIGHT;
return HTRIGHT;
}
// Top and Bottom Borders
if (ptHit->y <= rectWindow.top + ::GetSystemMetrics (SM_CYFRAME))
return HTTOP;
if (ptHit->y >= rectWindow.bottom - ::GetSystemMetrics (SM_CYFRAME))
return HTBOTTOM;
// If it's not in the menu, it's in the caption
RECT rectMenu;
ComputeRequiredMenuRect(rectMenu);
NonClientToScreen(&rectMenu);
if (::PtInRect(&rectMenu, *ptHit))
return HTMENU;
return HTCAPTION;
}