int QVistaHelper::topOffset()
{
if (vistaState() != VistaAero)
return titleBarSize() + 3;
static const int aeroOffset =
QSysInfo::WindowsVersion == QSysInfo::WV_WINDOWS7 ?
QStyleHelper::dpiScaled(4) : QStyleHelper::dpiScaled(13);
return aeroOffset + titleBarSize();
}
bool QVistaHelper::winEvent(MSG* msg, long* result)
{
bool retval = true;
switch (msg->message) {
case WM_NCHITTEST: {
LRESULT lResult;
pDwmDefWindowProc(msg->hwnd, msg->message, msg->wParam, msg->lParam, &lResult);
if (lResult == HTCLOSE || lResult == HTMAXBUTTON || lResult == HTMINBUTTON || lResult == HTHELP)
*result = lResult;
else
*result = DefWindowProc(msg->hwnd, msg->message, msg->wParam, msg->lParam);
break;
}
case WM_NCMOUSEMOVE:
case WM_NCLBUTTONDOWN:
case WM_NCLBUTTONUP:
case WIZ_WM_NCMOUSELEAVE: {
LRESULT lResult;
pDwmDefWindowProc(msg->hwnd, msg->message, msg->wParam, msg->lParam, &lResult);
*result = DefWindowProc(msg->hwnd, msg->message, msg->wParam, msg->lParam);
break;
}
case WM_NCCALCSIZE: {
NCCALCSIZE_PARAMS* lpncsp = (NCCALCSIZE_PARAMS*)msg->lParam;
*result = DefWindowProc(msg->hwnd, msg->message, msg->wParam, msg->lParam);
lpncsp->rgrc[0].top -= (vistaState() == VistaAero ? titleBarSize() : 0);
break;
}
default:
retval = false;
}
return retval;
}
void QVistaHelper::drawTitleBar(QPainter *painter)
{
Q_ASSERT(backButton_);
QPoint origin;
const bool isWindow = wizard->isWindow();
const HDC hdc = QVistaHelper::backingStoreDC(wizard, &origin);
if (vistaState() == VistaAero && isWindow)
drawBlackRect(QRect(0, 0, wizard->width(),
titleBarSize() + topOffset()), hdc);
// The button is positioned in QWizardPrivate::handleAeroStyleChange(),
// all calculation is relative to it.
const int btnTop = backButton_->mapToParent(QPoint()).y();
const int btnHeight = backButton_->size().height();
const int verticalCenter = (btnTop + btnHeight / 2) - 1;
const QString text = wizard->window()->windowTitle();
QFont font;
if (!isWindow || !getCaptionQFont(wizard->logicalDpiY() * wizard->devicePixelRatio(), &font))
font = QApplication::font("QMdiSubWindowTitleBar");
const QFontMetrics fontMetrics(font);
const QRect brect = fontMetrics.boundingRect(text);
int textHeight = brect.height();
int textWidth = brect.width();
int glowOffset = 0;
if (vistaState() == VistaAero) {
textHeight += 2 * glowSize();
textWidth += 2 * glowSize();
glowOffset = glowSize();
}
const int titleLeft = (wizard->layoutDirection() == Qt::LeftToRight
? titleOffset() - glowOffset
: wizard->width() - titleOffset() - textWidth + glowOffset);
const QRect textRectangle(titleLeft, verticalCenter - textHeight / 2, textWidth, textHeight);
if (isWindow) {
drawTitleText(painter, text, textRectangle, hdc);
} else {
painter->save();
painter->setFont(font);
painter->drawText(textRectangle, Qt::AlignVCenter | Qt::AlignHCenter, text);
painter->restore();
}
const QIcon windowIcon = wizard->windowIcon();
if (!windowIcon.isNull()) {
const int size = QVistaHelper::iconSize();
const int iconLeft = (wizard->layoutDirection() == Qt::LeftToRight
? leftMargin()
: wizard->width() - leftMargin() - size);
const QPoint pos(origin.x() + iconLeft, origin.y() + verticalCenter - size / 2);
const QPoint posDp = pos * QVistaHelper::m_devicePixelRatio;
const HICON hIcon = qt_pixmapToWinHICON(windowIcon.pixmap(size * QVistaHelper::m_devicePixelRatio));
DrawIconEx(hdc, posDp.x(), posDp.y(), hIcon, 0, 0, 0, NULL, DI_NORMAL | DI_COMPAT);
DestroyIcon(hIcon);
}
}
void QVistaHelper::drawTitleBar(QPainter *painter)
{
if (vistaState() == VistaAero)
drawBlackRect(
QRect(0, 0, wizard->width(), titleBarSize() + topOffset()),
painter->paintEngine()->getDC());
Q_ASSERT(backButton_);
const int btnTop = backButton_->mapToParent(QPoint()).y();
const int btnHeight = backButton_->size().height();
const int verticalCenter = (btnTop + btnHeight / 2);
wizard->windowIcon().paint(
painter, QRect(leftMargin(), verticalCenter - iconSize() / 2, iconSize(), iconSize()));
const QString text = wizard->window()->windowTitle();
const QFont font = QApplication::font("QWorkspaceTitleBar");
const QFontMetrics fontMetrics(font);
const QRect brect = fontMetrics.boundingRect(text);
int textHeight = brect.height();
int textWidth = brect.width();
if (vistaState() == VistaAero) {
textHeight += 2 * glowSize();
textWidth += 2 * glowSize();
}
drawTitleText(
painter, text,
QRect(titleOffset(), verticalCenter - textHeight / 2, textWidth, textHeight),
painter->paintEngine()->getDC());
}
void QVistaHelper::resizeEvent(QResizeEvent * event)
{
Q_UNUSED(event);
rtTop = QRect (0, 0, wizard->width(), frameSize());
int height = captionSize() + topOffset();
if (vistaState() == VistaBasic)
height -= titleBarSize();
rtTitle = QRect (0, frameSize(), wizard->width(), height);
}
void QVistaHelper::drawTitleBar(QPainter *painter)
{
Q_ASSERT(backButton_);
QPoint origin;
const bool isWindow = wizard->isWindow();
const HDC hdc = QVistaHelper::backingStoreDC(wizard, &origin);
if (vistaState() == VistaAero && isWindow)
drawBlackRect(QRect(0, 0, wizard->width(),
titleBarSize() + topOffset()), hdc);
const int btnTop = backButton_->mapToParent(QPoint()).y();
const int btnHeight = backButton_->size().height();
const int verticalCenter = (btnTop + btnHeight / 2) - 1;
const QString text = wizard->window()->windowTitle();
const QFont font = QApplication::font("QMdiSubWindowTitleBar");
const QFontMetrics fontMetrics(font);
const QRect brect = fontMetrics.boundingRect(text);
int textHeight = brect.height();
int textWidth = brect.width();
int glowOffset = 0;
if (vistaState() == VistaAero) {
textHeight += 2 * glowSize();
textWidth += 2 * glowSize();
glowOffset = glowSize();
}
const int titleLeft = (wizard->layoutDirection() == Qt::LeftToRight
? titleOffset() - glowOffset
: wizard->width() - titleOffset() - textWidth + glowOffset);
const QRect textRectangle(titleLeft, verticalCenter - textHeight / 2, textWidth, textHeight);
if (isWindow) {
drawTitleText(painter, text, textRectangle, hdc);
} else {
painter->save();
painter->setFont(font);
painter->drawText(textRectangle, Qt::AlignVCenter | Qt::AlignHCenter, text);
painter->restore();
}
const QIcon windowIcon = wizard->windowIcon();
if (!windowIcon.isNull()) {
const int iconLeft = (wizard->layoutDirection() == Qt::LeftToRight
? leftMargin()
: wizard->width() - leftMargin() - iconSize());
const QRect rect(origin.x() + iconLeft,
origin.y() + verticalCenter - iconSize() / 2, iconSize(), iconSize());
const HICON hIcon = qt_pixmapToWinHICON(windowIcon.pixmap(iconSize()));
DrawIconEx(hdc, rect.left(), rect.top(), hIcon, 0, 0, 0, NULL, DI_NORMAL | DI_COMPAT);
DestroyIcon(hIcon);
}
}
bool QVistaHelper::setDWMTitleBar(TitleBarChangeType type)
{
bool value = false;
if (vistaState() == VistaAero) {
WIZ_MARGINS mar = {0};
if (type == NormalTitleBar)
mar.cyTopHeight = 0;
else
mar.cyTopHeight = titleBarSize() + topOffset();
HRESULT hr = pDwmExtendFrameIntoClientArea(wizard->winId(), &mar);
value = SUCCEEDED(hr);
}
return value;
}
bool QVistaHelper::setDWMTitleBar(TitleBarChangeType type)
{
bool value = false;
if (vistaState() == VistaAero) {
WIZ_MARGINS mar = {0, 0, 0, 0};
if (type == NormalTitleBar)
mar.cyTopHeight = 0;
else
mar.cyTopHeight = (titleBarSize() + topOffset()) * QVistaHelper::m_devicePixelRatio;
if (const HWND wizardHandle = wizardHWND())
if (SUCCEEDED(pDwmExtendFrameIntoClientArea(wizardHandle, &mar)))
value = true;
}
return value;
}
void QVistaHelper::updateCustomMargins(bool vistaMargins)
{
if (QWindow *window = wizard->windowHandle()) {
// Reduce top frame to zero since we paint it ourselves.
const QMargins customMargins = vistaMargins ?
QMargins(0, -titleBarSize(), 0, 0) : QMargins();
const QVariant customMarginsV = qVariantFromValue(customMargins);
// The dynamic property takes effect when creating the platform window.
window->setProperty("_q_windowsCustomMargins", customMarginsV);
// If a platform window exists, change via native interface.
if (QPlatformWindow *platformWindow = window->handle()) {
QGuiApplication::platformNativeInterface()->
setWindowProperty(platformWindow, QStringLiteral("WindowsCustomMargins"),
customMarginsV);
}
}
}
bool QVistaHelper::winEvent(MSG* msg, long* result)
{
switch (msg->message) {
case WM_NCHITTEST: {
LRESULT lResult;
// Perform hit testing using DWM
if (pDwmDefWindowProc(msg->hwnd, msg->message, msg->wParam, msg->lParam, &lResult)) {
// DWM returned a hit, no further processing necessary
*result = lResult;
} else {
// DWM didn't return a hit, process using DefWindowProc
lResult = DefWindowProc(msg->hwnd, msg->message, msg->wParam, msg->lParam);
// If DefWindowProc returns a window caption button, just return HTCLIENT (client area).
// This avoid unnecessary hits to Windows NT style caption buttons which aren't visible but are
// located just under the Aero style window close button.
if (lResult == HTCLOSE || lResult == HTMAXBUTTON || lResult == HTMINBUTTON || lResult == HTHELP)
*result = HTCLIENT;
else
*result = lResult;
}
break;
}
case WM_NCCALCSIZE: {
NCCALCSIZE_PARAMS* lpncsp = (NCCALCSIZE_PARAMS*)msg->lParam;
*result = DefWindowProc(msg->hwnd, msg->message, msg->wParam, msg->lParam);
lpncsp->rgrc[0].top -= (vistaState() == VistaAero ? titleBarSize() : 0);
break;
}
default:
LRESULT lResult;
// Pass to DWM to handle
if (pDwmDefWindowProc(msg->hwnd, msg->message, msg->wParam, msg->lParam, &lResult))
*result = lResult;
// If the message wasn't handled by DWM, continue processing it as normal
else
return false;
}
return true;
}
void QVistaHelper::drawTitleBar(QPainter *painter)
{
HDC hdc = painter->paintEngine()->getDC();
if (vistaState() == VistaAero)
drawBlackRect(QRect(0, 0, wizard->width(),
titleBarSize() + topOffset()), hdc);
Q_ASSERT(backButton_);
const int btnTop = backButton_->mapToParent(QPoint()).y();
const int btnHeight = backButton_->size().height();
const int verticalCenter = (btnTop + btnHeight / 2) - 1;
const QString text = wizard->window()->windowTitle();
const QFont font = QApplication::font("QWorkspaceTitleBar");
const QFontMetrics fontMetrics(font);
const QRect brect = fontMetrics.boundingRect(text);
int textHeight = brect.height();
int textWidth = brect.width();
int glowOffset = 0;
if (vistaState() == VistaAero) {
textHeight += 2 * glowSize();
textWidth += 2 * glowSize();
glowOffset = glowSize();
}
drawTitleText(
painter, text,
QRect(titleOffset() - glowOffset, verticalCenter - textHeight / 2, textWidth, textHeight),
hdc);
if (!wizard->windowIcon().isNull()) {
QRect rect(leftMargin(), verticalCenter - iconSize() / 2, iconSize(), iconSize());
HICON hIcon = wizard->windowIcon().pixmap(iconSize()).toWinHICON();
DrawIconEx(hdc, rect.left(), rect.top(), hIcon, 0, 0, 0, NULL, DI_NORMAL | DI_COMPAT);
DestroyIcon(hIcon);
}
}
