diff options
| author | Mikolaj Boc <mikolaj.boc@qt.io> | 2023-06-14 14:54:34 +0200 |
|---|---|---|
| committer | Mikolaj Boc <mikolaj.boc@qt.io> | 2023-06-15 09:41:06 +0200 |
| commit | fc4fca6d9dc22839ca73898c362faff96c81214c (patch) | |
| tree | a30fcc5804cf28f81631f970d54e2c6207549f9a /src/plugins/platforms/wasm/qwasmwindowtreenode.cpp | |
| parent | eb92d52dc7190efefae0fae89c7c6eb9e16cdd9d (diff) | |
Support child windows on WASM
Setting parents for WASM platform windows is now supported. This means
that windows now reside in a hierarchical window tree, with the screen
and individual windows being nodes (QWasmWindowTreeNode), each
maintaining their own child window stack.
The divs backing windows are properly reparented in response to Qt
window parent changes, so that the html structure reflects what is
happening in Qt.
Change-Id: I55c91d90caf58714342dcd747043967ebfdf96bb
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
Diffstat (limited to 'src/plugins/platforms/wasm/qwasmwindowtreenode.cpp')
| -rw-r--r-- | src/plugins/platforms/wasm/qwasmwindowtreenode.cpp | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/src/plugins/platforms/wasm/qwasmwindowtreenode.cpp b/src/plugins/platforms/wasm/qwasmwindowtreenode.cpp new file mode 100644 index 00000000000..e16410dcde2 --- /dev/null +++ b/src/plugins/platforms/wasm/qwasmwindowtreenode.cpp @@ -0,0 +1,104 @@ +// Copyright (C) 2023 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only + +#include "qwasmwindowtreenode.h" + +#include "qwasmwindow.h" + +QWasmWindowTreeNode::QWasmWindowTreeNode() + : m_childStack(std::bind(&QWasmWindowTreeNode::onTopWindowChanged, this)) +{ +} + +QWasmWindowTreeNode::~QWasmWindowTreeNode() = default; + +void QWasmWindowTreeNode::onParentChanged(QWasmWindowTreeNode *previousParent, + QWasmWindowTreeNode *currentParent, + QWasmWindowStack::PositionPreference positionPreference) +{ + auto *window = asWasmWindow(); + if (previousParent) { + previousParent->m_childStack.removeWindow(window); + previousParent->onSubtreeChanged(QWasmWindowTreeNodeChangeType::NodeRemoval, previousParent, + window); + } + + if (currentParent) { + currentParent->m_childStack.pushWindow(window, positionPreference); + currentParent->onSubtreeChanged(QWasmWindowTreeNodeChangeType::NodeInsertion, currentParent, + window); + } +} + +QWasmWindow *QWasmWindowTreeNode::asWasmWindow() +{ + return nullptr; +} + +void QWasmWindowTreeNode::onSubtreeChanged(QWasmWindowTreeNodeChangeType changeType, + QWasmWindowTreeNode *parent, QWasmWindow *child) +{ + if (changeType == QWasmWindowTreeNodeChangeType::NodeInsertion && parent == this + && m_childStack.topWindow()) { + m_childStack.topWindow()->requestActivateWindow(); + } + + if (parentNode()) + parentNode()->onSubtreeChanged(changeType, parent, child); +} + +void QWasmWindowTreeNode::setWindowZOrder(QWasmWindow *window, int z) +{ + window->setZOrder(z); +} + +void QWasmWindowTreeNode::onPositionPreferenceChanged( + QWasmWindowStack::PositionPreference positionPreference) +{ + if (parentNode()) { + parentNode()->m_childStack.windowPositionPreferenceChanged(asWasmWindow(), + positionPreference); + } +} + +void QWasmWindowTreeNode::setAsActiveNode() +{ + if (parentNode()) + parentNode()->setActiveChildNode(asWasmWindow()); +} + +void QWasmWindowTreeNode::bringToTop() +{ + if (!parentNode()) + return; + parentNode()->m_childStack.raise(asWasmWindow()); + parentNode()->bringToTop(); +} + +void QWasmWindowTreeNode::sendToBottom() +{ + if (!parentNode()) + return; + m_childStack.lower(asWasmWindow()); +} + +void QWasmWindowTreeNode::onTopWindowChanged() +{ + constexpr int zOrderForElementInFrontOfScreen = 3; + int z = zOrderForElementInFrontOfScreen; + std::for_each(m_childStack.rbegin(), m_childStack.rend(), + [this, &z](QWasmWindow *window) { setWindowZOrder(window, z++); }); +} + +void QWasmWindowTreeNode::setActiveChildNode(QWasmWindow *activeChild) +{ + m_activeChild = activeChild; + + auto it = m_childStack.begin(); + if (it == m_childStack.end()) + return; + for (; it != m_childStack.end(); ++it) + (*it)->onActivationChanged(*it == m_activeChild); + + setAsActiveNode(); +} |