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framelesshelper
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Update. 

Signed-off-by: Yuhang Zhao <2546789017@qq.com>
This commit is contained in:
Yuhang Zhao 2020-10-10 12:41:43 +08:00
parent 5087c473f6
commit 12253c8a50
1 changed files with 121 additions and 158 deletions
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279
framelesshelper.cpp
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@ -52,25 +52,25 @@ namespace {
QWindow *getWindowHandle(QObject *val)
{
if (val) {
const auto validWindow = [](QWindow *window) -> QWindow * {
return (window && window->handle()) ? window : nullptr;
};
if (val->isWindowType()) {
return validWindow(qobject_cast<QWindow *>(val));
}
Q_ASSERT(val);
const auto validWindow = [](QWindow *window) -> QWindow * {
Q_ASSERT(window);
return window->handle() ? window : nullptr;
};
if (val->isWindowType()) {
return validWindow(qobject_cast<QWindow *>(val));
}
#ifdef QT_WIDGETS_LIB
else if (val->isWidgetType()) {
const auto widget = qobject_cast<QWidget *>(val);
if (widget && widget->isTopLevel()) {
return validWindow(widget->windowHandle());
}
else if (val->isWidgetType()) {
const auto widget = qobject_cast<QWidget *>(val);
if (widget && widget->isTopLevel()) {
return validWindow(widget->windowHandle());
}
}
#endif
else {
qWarning().noquote() << "Can't acquire the window handle: only "
"top level QWidget and QWindow are accepted.";
}
else {
qWarning().noquote() << "Can't acquire the window handle: only "
"top level QWidget and QWindow are accepted.";
}
return nullptr;
}
@ -81,7 +81,8 @@ FramelessHelper::FramelessHelper(QObject *parent) : QObject(parent) {}
void FramelessHelper::updateQtFrame(QWindow *window, const int titleBarHeight)
{
if (window && (titleBarHeight > 0)) {
Q_ASSERT(window);
if (titleBarHeight > 0) {
// Reduce top frame to zero since we paint it ourselves. Use
// device pixel to avoid rounding errors.
const QMargins margins = {0, -titleBarHeight, 0, 0};
@ -110,9 +111,7 @@ void FramelessHelper::updateQtFrame(QWindow *window, const int titleBarHeight)
void FramelessHelper::moveWindowToDesktopCenter(QObject *obj)
{
if (!obj) {
return;
}
Q_ASSERT(obj);
if (obj->isWindowType()) {
const auto window = qobject_cast<QWindow *>(obj);
if (window) {
@ -176,71 +175,59 @@ void FramelessHelper::setTitleBarHeight(const int val)
QList<QRect> FramelessHelper::getIgnoreAreas(QObject *obj) const
{
if (!obj) {
return {};
}
Q_ASSERT(obj);
return m_ignoreAreas.value(obj);
}
void FramelessHelper::setIgnoreAreas(QObject *obj, const QList<QRect> &val)
{
if (obj) {
m_ignoreAreas[obj] = val;
}
Q_ASSERT(obj);
m_ignoreAreas[obj] = val;
}
void FramelessHelper::addIgnoreArea(QObject *obj, const QRect &val)
{
if (obj) {
QList<QRect> areas = m_ignoreAreas[obj];
areas.append(val);
m_ignoreAreas[obj] = areas;
}
Q_ASSERT(obj);
QList<QRect> areas = m_ignoreAreas[obj];
areas.append(val);
m_ignoreAreas[obj] = areas;
}
void FramelessHelper::clearIgnoreAreas(QObject *obj)
{
if (obj) {
m_ignoreAreas[obj] = {};
}
Q_ASSERT(obj);
m_ignoreAreas[obj] = {};
}
QList<QRect> FramelessHelper::getDraggableAreas(QObject *obj) const
{
if (!obj) {
return {};
}
Q_ASSERT(obj);
return m_draggableAreas.value(obj);
}
void FramelessHelper::setDraggableAreas(QObject *obj, const QList<QRect> &val)
{
if (obj) {
m_draggableAreas[obj] = val;
}
Q_ASSERT(obj);
m_draggableAreas[obj] = val;
}
void FramelessHelper::addDraggableArea(QObject *obj, const QRect &val)
{
if (obj) {
QList<QRect> areas = m_draggableAreas[obj];
areas.append(val);
m_draggableAreas[obj] = areas;
}
Q_ASSERT(obj);
QList<QRect> areas = m_draggableAreas[obj];
areas.append(val);
m_draggableAreas[obj] = areas;
}
void FramelessHelper::clearDraggableAreas(QObject *obj)
{
if (obj) {
m_draggableAreas[obj] = {};
}
Q_ASSERT(obj);
m_draggableAreas[obj] = {};
}
QList<QObject *> FramelessHelper::getIgnoreObjects(QObject *obj) const
{
if (!obj) {
return {};
}
Q_ASSERT(obj);
QList<QObject *> ret{};
const QList<QPointer<QObject>> objs = m_ignoreObjects.value(obj);
if (!objs.isEmpty()) {
@ -255,38 +242,33 @@ QList<QObject *> FramelessHelper::getIgnoreObjects(QObject *obj) const
void FramelessHelper::setIgnoreObjects(QObject *obj, const QList<QObject *> &val)
{
if (obj) {
QList<QPointer<QObject>> objs{};
if (!val.isEmpty()) {
for (auto &&_obj : qAsConst(val)) {
objs.append(_obj);
}
Q_ASSERT(obj);
QList<QPointer<QObject>> objs{};
if (!val.isEmpty()) {
for (auto &&_obj : qAsConst(val)) {
objs.append(_obj);
}
m_ignoreObjects[obj] = objs;
}
m_ignoreObjects[obj] = objs;
}
void FramelessHelper::addIgnoreObject(QObject *obj, QObject *val)
{
if (obj) {
QList<QPointer<QObject>> objs = m_ignoreObjects[obj];
objs.append(val);
m_ignoreObjects[obj] = objs;
}
Q_ASSERT(obj);
QList<QPointer<QObject>> objs = m_ignoreObjects[obj];
objs.append(val);
m_ignoreObjects[obj] = objs;
}
void FramelessHelper::clearIgnoreObjects(QObject *obj)
{
if (obj) {
m_ignoreObjects[obj] = {};
}
Q_ASSERT(obj);
m_ignoreObjects[obj] = {};
}
QList<QObject *> FramelessHelper::getDraggableObjects(QObject *obj) const
{
if (!obj) {
return {};
}
Q_ASSERT(obj);
QList<QObject *> ret{};
const QList<QPointer<QObject>> objs = m_draggableObjects.value(obj);
if (!objs.isEmpty()) {
@ -301,112 +283,103 @@ QList<QObject *> FramelessHelper::getDraggableObjects(QObject *obj) const
void FramelessHelper::setDraggableObjects(QObject *obj, const QList<QObject *> &val)
{
if (obj) {
QList<QPointer<QObject>> objs{};
if (!val.isEmpty()) {
for (auto &&_obj : qAsConst(val)) {
objs.append(_obj);
}
Q_ASSERT(obj);
QList<QPointer<QObject>> objs{};
if (!val.isEmpty()) {
for (auto &&_obj : qAsConst(val)) {
objs.append(_obj);
}
m_draggableObjects[obj] = objs;
}
m_draggableObjects[obj] = objs;
}
void FramelessHelper::addDraggableObject(QObject *obj, QObject *val)
{
if (obj) {
QList<QPointer<QObject>> objs = m_draggableObjects[obj];
objs.append(val);
m_draggableObjects[obj] = objs;
}
Q_ASSERT(obj);
QList<QPointer<QObject>> objs = m_draggableObjects[obj];
objs.append(val);
m_draggableObjects[obj] = objs;
}
void FramelessHelper::clearDraggableObjects(QObject *obj)
{
if (obj) {
m_draggableObjects[obj] = {};
}
Q_ASSERT(obj);
m_draggableObjects[obj] = {};
}
bool FramelessHelper::getResizable(QObject *obj) const
{
if (!obj) {
return true;
}
Q_ASSERT(obj);
return !m_fixedSize.value(obj);
}
void FramelessHelper::setResizable(QObject *obj, const bool val)
{
if (obj) {
m_fixedSize[obj] = !val;
}
Q_ASSERT(obj);
m_fixedSize[obj] = !val;
}
bool FramelessHelper::getTitleBarEnabled(QObject *obj) const
{
if (!obj) {
return true;
}
Q_ASSERT(obj);
return !m_disableTitleBar.value(obj);
}
void FramelessHelper::setTitleBarEnabled(QObject *obj, const bool val)
{
if (obj) {
m_disableTitleBar[obj] = !val;
}
Q_ASSERT(obj);
m_disableTitleBar[obj] = !val;
}
void FramelessHelper::removeWindowFrame(QObject *obj)
{
if (obj) {
// Don't miss the Qt::Window flag.
const Qt::WindowFlags flags = Qt::Window | Qt::FramelessWindowHint;
const auto window = qobject_cast<QWindow *>(obj);
if (window) {
window->setFlags(flags);
// MouseTracking is always enabled for QWindow.
window->installEventFilter(this);
}
#ifdef QT_WIDGETS_LIB
else {
const auto widget = qobject_cast<QWidget *>(obj);
if (widget && widget->isTopLevel()) {
widget->setWindowFlags(flags);
// We can't get MouseMove events if MouseTracking is
// disabled.
widget->setMouseTracking(true);
widget->installEventFilter(this);
updateQtFrame(widget->windowHandle(), m_titleBarHeight);
}
}
#endif
Q_ASSERT(obj);
// Don't miss the Qt::Window flag.
const Qt::WindowFlags flags = Qt::Window | Qt::FramelessWindowHint;
const auto window = qobject_cast<QWindow *>(obj);
if (window) {
window->setFlags(flags);
// MouseTracking is always enabled for QWindow.
window->installEventFilter(this);
}
#ifdef QT_WIDGETS_LIB
else {
const auto widget = qobject_cast<QWidget *>(obj);
if (widget && widget->isTopLevel()) {
widget->setWindowFlags(flags);
// We can't get MouseMove events if MouseTracking is
// disabled.
widget->setMouseTracking(true);
widget->installEventFilter(this);
updateQtFrame(widget->windowHandle(), m_titleBarHeight);
}
}
#endif
}
bool FramelessHelper::eventFilter(QObject *object, QEvent *event)
{
Q_ASSERT(object);
Q_ASSERT(event);
const auto isWindowTopLevel = [](QObject *window) -> bool {
if (window) {
if (window->isWindowType()) {
const auto win = qobject_cast<QWindow *>(window);
if (win) {
return win->isTopLevel();
}
Q_ASSERT(window);
if (window->isWindowType()) {
const auto win = qobject_cast<QWindow *>(window);
if (win) {
return win->isTopLevel();
}
#ifdef QT_WIDGETS_LIB
else if (window->isWidgetType()) {
const auto widget = qobject_cast<QWidget *>(window);
if (widget) {
return widget->isTopLevel();
}
}
#endif
}
#ifdef QT_WIDGETS_LIB
else if (window->isWidgetType()) {
const auto widget = qobject_cast<QWidget *>(window);
if (widget) {
return widget->isTopLevel();
}
}
#endif
return false;
};
if (!object || !isWindowTopLevel(object)) {
if (!isWindowTopLevel(object)) {
return false;
}
const auto getWindowEdges =
@ -496,17 +469,13 @@ bool FramelessHelper::eventFilter(QObject *object, QEvent *event)
};
const auto isInIgnoreAreas = [this, &isInSpecificAreas](const QPointF &point,
QObject *window) -> bool {
if (!window) {
return false;
}
Q_ASSERT(window);
return isInSpecificAreas(point.x(), point.y(), getIgnoreAreas(window));
};
const auto isInIgnoreObjects = [this, &isInSpecificObjects](const QPointF &point,
QObject *window) -> bool {
Q_ASSERT(window);
#if defined(QT_WIDGETS_LIB) || defined(QT_QUICK_LIB)
if (!window) {
return false;
}
return isInSpecificObjects(point.x(), point.y(), getIgnoreObjects(window));
#else
Q_UNUSED(point)
@ -516,18 +485,14 @@ bool FramelessHelper::eventFilter(QObject *object, QEvent *event)
};
const auto isInDraggableAreas = [this, &isInSpecificAreas](const QPointF &point,
QObject *window) -> bool {
if (!window) {
return false;
}
Q_ASSERT(window);
const auto areas = getDraggableAreas(window);
return (areas.isEmpty() ? true : isInSpecificAreas(point.x(), point.y(), areas));
};
const auto isInDraggableObjects = [this, &isInSpecificObjects](const QPointF &point,
QObject *window) -> bool {
Q_ASSERT(window);
#if defined(QT_WIDGETS_LIB) || defined(QT_QUICK_LIB)
if (!window) {
return false;
}
const auto objs = getDraggableObjects(window);
return (objs.isEmpty() ? true : isInSpecificObjects(point.x(), point.y(), objs));
#else
@ -539,9 +504,7 @@ bool FramelessHelper::eventFilter(QObject *object, QEvent *event)
const auto isResizePermitted = [&isInIgnoreAreas, &isInIgnoreObjects](const QPointF &globalPoint,
const QPointF &point,
QObject *window) -> bool {
if (!window) {
return false;
}
Q_ASSERT(window);
return (!isInIgnoreAreas(point, window) && !isInIgnoreObjects(globalPoint, window));
};
const auto isInTitlebarArea = [this,
@ -550,25 +513,25 @@ bool FramelessHelper::eventFilter(QObject *object, QEvent *event)
&isResizePermitted](const QPointF &globalPoint,
const QPointF &point,
QObject *window) -> bool {
if (window) {
const bool customDragAreas = !getDraggableAreas(window).isEmpty();
Q_ASSERT(window);
const bool customDragAreas = !getDraggableAreas(window).isEmpty();
#if defined(QT_WIDGETS_LIB) || defined(QT_QUICK_LIB)
const bool customDragObjects = !getDraggableObjects(window).isEmpty();
const bool customDragObjects = !getDraggableObjects(window).isEmpty();
#else
const bool customDragObjects = false;
const bool customDragObjects = false;
#endif
const bool customDrag = customDragAreas || customDragObjects;
return ((customDrag ? (isInDraggableAreas(point, window)
&& isInDraggableObjects(globalPoint, window))
: (point.y() <= m_titleBarHeight))
&& isResizePermitted(globalPoint, point, window) && getTitleBarEnabled(window));
}
const bool customDrag = customDragAreas || customDragObjects;
return ((customDrag ? (isInDraggableAreas(point, window)
&& isInDraggableObjects(globalPoint, window))
: (point.y() <= m_titleBarHeight))
&& isResizePermitted(globalPoint, point, window) && getTitleBarEnabled(window));
return false;
};
const auto moveOrResize =
[this, &getWindowEdges, &isResizePermitted, &isInTitlebarArea](const QPointF &globalPoint,
const QPointF &point,
QObject *object) {
Q_ASSERT(object);
QWindow *window = getWindowHandle(object);
if (window) {
const Qt::Edges edges = getWindowEdges(point, window->width(), window->height());