void UIWidget::removeChild(const UIWidgetPtr& child)
{
// remove from children list
if(hasChild(child)) {
// defocus if needed
bool focusAnother = false;
if(m_focusedChild == child) {
focusChild(nullptr, Fw::ActiveFocusReason);
focusAnother = true;
}
if(isChildLocked(child))
unlockChild(child);
auto it = std::find(m_children.begin(), m_children.end(), child);
m_children.erase(it);
// reset child parent
assert(child->getParent() == asUIWidget());
child->setParent(nullptr);
m_layout->removeWidget(child);
// update child states
child->updateStates();
updateChildrenIndexStates();
if(focusAnother && !m_focusedChild)
focusPreviousChild(Fw::ActiveFocusReason);
} else
logError("Attempt to remove an unknown child from a UIWidget");
}
void UIWidget::insertChild(int index, const UIWidgetPtr& child)
{
if(!child) {
logWarning("attempt to insert a null child into a UIWidget");
return;
}
if(hasChild(child)) {
logWarning("attempt to insert a child again into a UIWidget");
return;
}
index = index <= 0 ? (m_children.size() + index) : index-1;
assert(index >= 0 && (uint)index <= m_children.size());
// retrieve child by index
auto it = m_children.begin() + index;
m_children.insert(it, child);
child->setParent(asUIWidget());
// create default layout if needed
if(!m_layout)
m_layout = UIAnchorLayoutPtr(new UIAnchorLayout(asUIWidget()));
// add to layout and updates it
m_layout->addWidget(child);
// update new child states
child->updateStates();
updateChildrenIndexStates();
}
bool UIWidget::setRect(const Rect& rect)
{
if(rect.width() > 8192 || rect.height() > 8192) {
logError("attempt to set huge rect size (", rect,") for ", m_id);
return false;
}
// only update if the rect really changed
Rect oldRect = m_rect;
if(rect == oldRect)
return false;
m_rect = rect;
// updates own layout
updateLayout();
// avoid massive update events
if(!m_updateEventScheduled) {
UIWidgetPtr self = asUIWidget();
g_eventDispatcher.addEvent([self, oldRect]() {
self->m_updateEventScheduled = false;
if(oldRect != self->getRect())
self->onGeometryChange(oldRect, self->getRect());
});
m_updateEventScheduled = true;
}
return true;
}
bool UIWidget::setRect(const Rect& rect)
{
/*
if(rect.width() > 8192 || rect.height() > 8192) {
g_logger.error(stdext::format("attempt to set huge rect size (%s) for %s", stdext::to_string(rect), m_id));
return false;
}
*/
// only update if the rect really changed
Rect oldRect = m_rect;
if(rect == oldRect)
return false;
m_rect = rect;
// updates own layout
updateLayout();
// avoid massive update events
if(!m_updateEventScheduled) {
UIWidgetPtr self = static_self_cast<UIWidget>();
g_dispatcher.addEvent([self, oldRect]() {
self->m_updateEventScheduled = false;
if(oldRect != self->getRect())
self->onGeometryChange(oldRect, self->getRect());
});
m_updateEventScheduled = true;
}
// update hovered widget when moved behind mouse area
if(containsPoint(g_window.getMousePosition()))
g_ui.updateHoveredWidget();
return true;
}
void UIWidget::updateStyle()
{
if(m_destroyed)
return;
if(m_loadingStyle && !m_updateStyleScheduled) {
UIWidgetPtr self = static_self_cast<UIWidget>();
g_dispatcher.addEvent([self] {
self->m_updateStyleScheduled = false;
self->updateStyle();
});
m_updateStyleScheduled = true;
return;
}
if(!m_style)
return;
OTMLNodePtr newStateStyle = OTMLNode::create();
// copy only the changed styles from default style
if(m_stateStyle) {
for(OTMLNodePtr node : m_stateStyle->children()) {
if(OTMLNodePtr otherNode = m_style->get(node->tag()))
newStateStyle->addChild(otherNode->clone());
}
}
// checks for states combination
for(const OTMLNodePtr& style : m_style->children()) {
if(stdext::starts_with(style->tag(), "$")) {
std::string statesStr = style->tag().substr(1);
std::vector<std::string> statesSplit = stdext::split(statesStr, " ");
bool match = true;
for(std::string stateStr : statesSplit) {
if(stateStr.length() == 0)
continue;
bool notstate = (stateStr[0] == '!');
if(notstate)
stateStr = stateStr.substr(1);
bool stateOn = hasState(Fw::translateState(stateStr));
if((!notstate && !stateOn) || (notstate && stateOn))
match = false;
}
// merge states styles
if(match) {
newStateStyle->merge(style);
}
}
}
//TODO: prevent setting already set proprieties
applyStyle(newStateStyle);
m_stateStyle = newStateStyle;
}
void UIWidget::lockChild(const UIWidgetPtr& child)
{
if(!child)
return;
assert(hasChild(child));
// prevent double locks
if(isChildLocked(child))
unlockChild(child);
// disable all other children
for(const UIWidgetPtr& otherChild : m_children) {
if(otherChild == child)
child->setEnabled(true);
else
otherChild->setEnabled(false);
}
m_lockedChildren.push_front(child);
// lock child focus
if(child->isFocusable())
focusChild(child, Fw::ActiveFocusReason);
moveChildToTop(child);
}
void UIWidget::addChild(const UIWidgetPtr& child)
{
if(!child) {
logWarning("attempt to add a null child into a UIWidget");
return;
}
if(hasChild(child)) {
logWarning("attempt to add a child again into a UIWidget");
return;
}
m_children.push_back(child);
child->setParent(asUIWidget());
// create default layout
if(!m_layout)
m_layout = UIAnchorLayoutPtr(new UIAnchorLayout(asUIWidget()));
// add to layout and updates it
m_layout->addWidget(child);
// update new child states
child->updateStates();
updateChildrenIndexStates();
}
bool UIManager::updateDraggingWidget(const UIWidgetPtr& draggingWidget, const Point& clickedPos)
{
bool accepted = false;
UIWidgetPtr oldDraggingWidget = m_draggingWidget;
m_draggingWidget = nullptr;
if(oldDraggingWidget) {
UIWidgetPtr droppedWidget;
if(!clickedPos.isNull()) {
auto clickedChildren = m_rootWidget->recursiveGetChildrenByPos(clickedPos);
for(const UIWidgetPtr& child : clickedChildren) {
if(child->onDrop(oldDraggingWidget, clickedPos)) {
droppedWidget = child;
break;
}
}
}
accepted = oldDraggingWidget->onDragLeave(droppedWidget, clickedPos);
oldDraggingWidget->updateState(Fw::DraggingState);
}
if(draggingWidget) {
if(draggingWidget->onDragEnter(clickedPos)) {
m_draggingWidget = draggingWidget;
draggingWidget->updateState(Fw::DraggingState);
accepted = true;
}
}
return accepted;
}
void UIWidget::lockChild(const UIWidgetPtr& child)
{
if(m_destroyed)
return;
if(!child)
return;
if(!hasChild(child)) {
g_logger.traceError("cannot find child");
return;
}
// prevent double locks
if(isChildLocked(child))
unlockChild(child);
// disable all other children
for(const UIWidgetPtr& otherChild : m_children) {
if(otherChild == child)
child->setEnabled(true);
else
otherChild->setEnabled(false);
}
m_lockedChildren.push_front(child);
// lock child focus
if(child->isFocusable())
focusChild(child, Fw::ActiveFocusReason);
}
void UIWidget::setParent(const UIWidgetPtr& parent)
{
// remove from old parent
UIWidgetPtr oldParent = getParent();
// the parent is already the same
if(oldParent == parent)
return;
UIWidgetPtr self = static_self_cast<UIWidget>();
if(oldParent && oldParent->hasChild(self))
oldParent->removeChild(self);
// reset parent
m_parent.reset();
// set new parent
if(parent) {
m_parent = parent;
// add to parent if needed
if(!parent->hasChild(self))
parent->addChild(self);
}
}
void UIWidget::removeChild(UIWidgetPtr child)
{
// remove from children list
if(hasChild(child)) {
// defocus if needed
bool focusAnother = false;
if(m_focusedChild == child) {
focusChild(nullptr, Fw::ActiveFocusReason);
focusAnother = true;
}
if(isChildLocked(child))
unlockChild(child);
auto it = std::find(m_children.begin(), m_children.end(), child);
m_children.erase(it);
// reset child parent
assert(child->getParent() == static_self_cast<UIWidget>());
child->setParent(nullptr);
m_layout->removeWidget(child);
// update child states
child->updateStates();
updateChildrenIndexStates();
if(m_autoFocusPolicy != Fw::AutoFocusNone && focusAnother && !m_focusedChild)
focusPreviousChild(Fw::ActiveFocusReason, true);
g_ui.onWidgetDisappear(child);
} else
g_logger.traceError("attempt to remove an unknown child from a UIWidget");
}
UIWidgetPtr UIManager::createWidgetFromOTML(const OTMLNodePtr& widgetNode, const UIWidgetPtr& parent)
{
OTMLNodePtr originalStyleNode = getStyle(widgetNode->tag());
if(!originalStyleNode)
stdext::throw_exception(stdext::format("'%s' is not a defined style", widgetNode->tag()));
OTMLNodePtr styleNode = originalStyleNode->clone();
styleNode->merge(widgetNode);
std::string widgetType = styleNode->valueAt("__class");
// call widget creation from lua
UIWidgetPtr widget = g_lua.callGlobalField<UIWidgetPtr>(widgetType, "create");
if(parent)
parent->addChild(widget);
if(widget) {
widget->callLuaField("onCreate");
widget->setStyleFromNode(styleNode);
for(const OTMLNodePtr& childNode : styleNode->children()) {
if(!childNode->isUnique()) {
createWidgetFromOTML(childNode, widget);
styleNode->removeChild(childNode);
}
}
} else
stdext::throw_exception(stdext::format("unable to create widget of type '%s'", widgetType));
widget->callLuaField("onSetup");
return widget;
}
UIAnchorLayoutPtr UIWidget::getAnchoredLayout()
{
UIWidgetPtr parent = getParent();
if(!parent)
return nullptr;
return parent->getLayout()->asUIAnchorLayout();
}
void UIWidget::raise()
{
if(m_destroyed)
return;
UIWidgetPtr parent = getParent();
if(parent)
parent->raiseChild(asUIWidget());
}
void UIWidget::lower()
{
if(m_destroyed)
return;
UIWidgetPtr parent = getParent();
if(parent)
parent->lowerChild(asUIWidget());
}
void UIWidget::raise()
{
if(m_destroyed)
return;
UIWidgetPtr parent = getParent();
if(parent)
parent->raiseChild(static_self_cast<UIWidget>());
}
void UIWidget::focusChild(const UIWidgetPtr& child, Fw::FocusReason reason)
{
if(m_destroyed)
return;
if(child == m_focusedChild)
return;
if(child && !hasChild(child)) {
g_logger.error("attempt to focus an unknown child in a UIWidget");
return;
}
UIWidgetPtr oldFocused = m_focusedChild;
m_focusedChild = child;
if(child) {
child->setLastFocusReason(reason);
child->updateState(Fw::FocusState);
child->updateState(Fw::ActiveState);
child->onFocusChange(true, reason);
}
if(oldFocused) {
oldFocused->setLastFocusReason(reason);
oldFocused->updateState(Fw::FocusState);
oldFocused->updateState(Fw::ActiveState);
oldFocused->onFocusChange(false, reason);
}
onChildFocusChange(child, oldFocused, reason);
}
UIAnchorLayoutPtr UIWidget::getAnchoredLayout()
{
UIWidgetPtr parent = getParent();
if(!parent)
return nullptr;
UILayoutPtr layout = parent->getLayout();
if(layout->isUIAnchorLayout())
return layout->static_self_cast<UIAnchorLayout>();
return nullptr;
}
void UIWidget::bindRectToParent()
{
Rect boundRect = m_rect;
UIWidgetPtr parent = getParent();
if(parent) {
Rect parentRect = parent->getRect();
boundRect.bound(parentRect);
}
setRect(boundRect);
}
int UIAnchor::getHookedPoint(const UIWidgetPtr& hookedWidget, const UIWidgetPtr& parentWidget)
{
// determine hooked widget edge point
Rect hookedWidgetRect = hookedWidget->getRect();
if(hookedWidget == parentWidget)
hookedWidgetRect = parentWidget->getPaddingRect();
int point = 0;
switch(m_hookedEdge) {
case Fw::AnchorLeft:
point = hookedWidgetRect.left();
break;
case Fw::AnchorRight:
point = hookedWidgetRect.right();
break;
case Fw::AnchorTop:
point = hookedWidgetRect.top();
break;
case Fw::AnchorBottom:
point = hookedWidgetRect.bottom();
break;
case Fw::AnchorHorizontalCenter:
point = hookedWidgetRect.horizontalCenter();
break;
case Fw::AnchorVerticalCenter:
point = hookedWidgetRect.verticalCenter();
break;
default:
// must never happens
assert(false);
break;
}
if(hookedWidget == parentWidget) {
switch(m_hookedEdge) {
case Fw::AnchorLeft:
case Fw::AnchorRight:
case Fw::AnchorHorizontalCenter:
point -= parentWidget->getVirtualOffset().x;
break;
case Fw::AnchorBottom:
case Fw::AnchorTop:
case Fw::AnchorVerticalCenter:
point -= parentWidget->getVirtualOffset().y;
break;
default:
break;
}
}
return point;
}
bool UIWidget::onMouseRelease(const Point& mousePos, Fw::MouseButton button)
{
if(isPressed() && getRect().contains(mousePos))
callLuaField("onClick");
UIWidgetPtr draggedWidget = g_ui.getDraggingWidget();
if(draggedWidget && button == Fw::MouseLeftButton && (containsPoint(mousePos) || asUIWidget() == g_ui.getRootWidget())) {
onDrop(draggedWidget, mousePos);
draggedWidget->onDragLeave(asUIWidget(), mousePos);
draggedWidget->setDragging(false);
}
return callLuaField<bool>("onMouseRelease", mousePos, button);
}
void UIWidget::bindRectToParent()
{
if(m_destroyed)
return;
Rect boundRect = m_rect;
UIWidgetPtr parent = getParent();
if(parent) {
Rect parentRect = parent->getPaddingRect();
boundRect.bind(parentRect);
}
setRect(boundRect);
}
UIWidgetPtr UIAnchor::getHookedWidget(const UIWidgetPtr& widget, const UIWidgetPtr& parentWidget)
{
// determine hooked widget
UIWidgetPtr hookedWidget;
if(parentWidget) {
if(m_hookedWidgetId == "parent")
hookedWidget = parentWidget;
else if(m_hookedWidgetId == "next")
hookedWidget = parentWidget->getChildAfter(widget);
else if(m_hookedWidgetId == "prev")
hookedWidget = parentWidget->getChildBefore(widget);
else
hookedWidget = parentWidget->getChildById(m_hookedWidgetId);
}
return hookedWidget;
}
void UIWidget::focusChild(const UIWidgetPtr& child, Fw::FocusReason reason)
{
if(child == m_focusedChild)
return;
if(child && !hasChild(child)) {
logError("attempt to focus an unknown child in a UIWidget");
return;
}
UIWidgetPtr oldFocused = m_focusedChild;
m_focusedChild = child;
if(child) {
child->setLastFocusReason(reason);
child->updateState(Fw::FocusState);
child->updateState(Fw::ActiveState);
}
if(oldFocused) {
oldFocused->setLastFocusReason(reason);
oldFocused->updateState(Fw::FocusState);
oldFocused->updateState(Fw::ActiveState);
}
}
void UIWidget::destroyChildren()
{
UILayoutPtr layout = getLayout();
if(layout)
layout->disableUpdates();
m_focusedChild = nullptr;
m_lockedChildren.clear();
while(!m_children.empty()) {
UIWidgetPtr child = m_children.front();
m_children.pop_front();
child->setParent(nullptr);
m_layout->removeWidget(child);
child->destroy();
}
layout->enableUpdates();
}
void UIWidget::unlockChild(const UIWidgetPtr& child)
{
if(m_destroyed)
return;
if(!child)
return;
if(!hasChild(child)) {
g_logger.traceError("cannot find child");
return;
}
auto it = std::find(m_lockedChildren.begin(), m_lockedChildren.end(), child);
if(it == m_lockedChildren.end())
return;
m_lockedChildren.erase(it);
// find new child to lock
UIWidgetPtr lockedChild;
if(m_lockedChildren.size() > 0) {
lockedChild = m_lockedChildren.front();
assert(hasChild(lockedChild));
}
for(const UIWidgetPtr& otherChild : m_children) {
// lock new child
if(lockedChild) {
if(otherChild == lockedChild)
lockedChild->setEnabled(true);
else
otherChild->setEnabled(false);
}
// else unlock all
else
otherChild->setEnabled(true);
}
if(lockedChild) {
if(lockedChild->isFocusable())
focusChild(lockedChild, Fw::ActiveFocusReason);
}
}
void UIWidget::applyStyle(const OTMLNodePtr& styleNode)
{
if(m_destroyed)
return;
if(styleNode->size() == 0)
return;
m_loadingStyle = true;
try {
// translate ! style tags
for(const OTMLNodePtr& node : styleNode->children()) {
if(node->tag()[0] == '!') {
std::string tag = node->tag().substr(1);
std::string code = stdext::format("tostring(%s)", node->value());
std::string origin = "@" + node->source() + ": [" + node->tag() + "]";
g_lua.evaluateExpression(code, origin);
std::string value = g_lua.popString();
node->setTag(tag);
node->setValue(value);
}
}
onStyleApply(styleNode->tag(), styleNode);
callLuaField("onStyleApply", styleNode->tag(), styleNode);
if(m_firstOnStyle) {
UIWidgetPtr parent = getParent();
if(isFocusable() && isExplicitlyVisible() && isExplicitlyEnabled() &&
parent && ((!parent->getFocusedChild() && parent->getAutoFocusPolicy() == Fw::AutoFocusFirst) ||
parent->getAutoFocusPolicy() == Fw::AutoFocusLast)) {
focus();
}
}
m_firstOnStyle = false;
} catch(stdext::exception& e) {
g_logger.traceError(stdext::format("failed to apply style to widget '%s': %s", m_id, e.what()));
}
m_loadingStyle = false;
}
void UIWidget::setRect(const Rect& rect)
{
// only update if the rect really changed
Rect oldRect = m_rect;
if(rect == oldRect)
return;
m_rect = rect;
// updates own layout
updateLayout();
// avoid massive update events
if(!m_updateEventScheduled) {
UIWidgetPtr self = asUIWidget();
g_dispatcher.addEvent([self, oldRect]() {
self->m_updateEventScheduled = false;
if(oldRect != self->getRect())
self->onGeometryChange(oldRect, self->getRect());
});
m_updateEventScheduled = true;
}
}
void UIWidget::insertChild(int index, const UIWidgetPtr& child)
{
if(!child) {
g_logger.traceWarning("attempt to insert a null child into a UIWidget");
return;
}
if(hasChild(child)) {
g_logger.traceWarning("attempt to insert a child again into a UIWidget");
return;
}
index = index <= 0 ? (m_children.size() + index) : index-1;
if(!(index >= 0 && (uint)index <= m_children.size())) {
//g_logger.traceWarning("attempt to insert a child UIWidget into an invalid index, using nearest index...");
index = std::min(std::max(index, 0), (int)m_children.size());
}
// retrieve child by index
auto it = m_children.begin() + index;
m_children.insert(it, child);
child->setParent(static_self_cast<UIWidget>());
// create default layout if needed
if(!m_layout)
m_layout = UIAnchorLayoutPtr(new UIAnchorLayout(static_self_cast<UIWidget>()));
// add to layout and updates it
m_layout->addWidget(child);
// update new child states
child->updateStates();
updateChildrenIndexStates();
g_ui.onWidgetAppear(child);
}
bool UIWidget::propagateOnMousePress(const Point& mousePos, Fw::MouseButton button)
{
// do a backup of children list, because it may change while looping it
UIWidgetPtr clickedChild;
for(const UIWidgetPtr& child : m_children) {
// events on hidden or disabled widgets are discarded
if(!child->isExplicitlyEnabled() || !child->isExplicitlyVisible())
continue;
// mouse press events only go to children that contains the mouse position
if(child->containsPoint(mousePos) && child == getChildByPos(mousePos)) {
clickedChild = child;
break;
}
}
if(clickedChild) {
// focusable child gains focus when clicked
if(clickedChild->isFocusable())
focusChild(clickedChild, Fw::MouseFocusReason);
// stop propagating if the child accept the event
if(clickedChild->propagateOnMousePress(mousePos, button))
return true;
}
// only non phatom widgets receives mouse press events
if(!isPhantom()) {
bool ret = onMousePress(mousePos, button);
if(button == Fw::MouseLeftButton && !isPressed())
setPressed(true);
return ret;
}
return false;
}