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28 #include "platform/Widget.h"
31 #include "wtf/Assertions.h"
37 , m_selfVisible(false)
38 , m_parentVisible(false)
47 void Widget::setParent(Widget* widget)
49 ASSERT(!widget || !m_parent);
50 if (!widget || !widget->isVisible())
51 setParentVisible(false);
53 if (widget && widget->isVisible())
54 setParentVisible(true);
57 Widget* Widget::root() const
59 const Widget* top = this;
62 if (top->isFrameView())
63 return const_cast<Widget*>(static_cast<const Widget*>(top));
67 IntRect Widget::convertFromContainingWindow(const IntRect& windowRect) const
69 if (const Widget* parentWidget = parent()) {
70 IntRect parentRect = parentWidget->convertFromContainingWindow(windowRect);
71 return convertFromContainingView(parentRect);
76 IntRect Widget::convertToContainingWindow(const IntRect& localRect) const
78 if (const Widget* parentWidget = parent()) {
79 IntRect parentRect = convertToContainingView(localRect);
80 return parentWidget->convertToContainingWindow(parentRect);
85 IntPoint Widget::convertFromContainingWindow(const IntPoint& windowPoint) const
87 if (const Widget* parentWidget = parent()) {
88 IntPoint parentPoint = parentWidget->convertFromContainingWindow(windowPoint);
89 return convertFromContainingView(parentPoint);
94 FloatPoint Widget::convertFromContainingWindow(const FloatPoint& windowPoint) const
96 // Widgets / windows are required to be IntPoint aligned, but we may need to convert
97 // FloatPoint values within them (eg. for event co-ordinates).
98 IntPoint flooredPoint = flooredIntPoint(windowPoint);
99 FloatPoint parentPoint = this->convertFromContainingWindow(flooredPoint);
100 FloatSize windowFraction = windowPoint - flooredPoint;
101 // Use linear interpolation handle any fractional value (eg. for iframes subject to a transform
102 // beyond just a simple translation).
103 // FIXME: Add FloatPoint variants of all co-ordinate space conversion APIs.
104 if (!windowFraction.isEmpty()) {
105 const int kFactor = 1000;
106 IntPoint parentLineEnd = this->convertFromContainingWindow(flooredPoint + roundedIntSize(windowFraction.scaledBy(kFactor)));
107 FloatSize parentFraction = (parentLineEnd - parentPoint).scaledBy(1.0f / kFactor);
108 parentPoint.move(parentFraction);
113 IntPoint Widget::convertToContainingWindow(const IntPoint& localPoint) const
115 if (const Widget* parentWidget = parent()) {
116 IntPoint parentPoint = convertToContainingView(localPoint);
117 return parentWidget->convertToContainingWindow(parentPoint);
122 IntRect Widget::convertToContainingView(const IntRect& localRect) const
124 if (const Widget* parentWidget = parent()) {
125 IntRect parentRect(localRect);
126 parentRect.setLocation(parentWidget->convertChildToSelf(this, localRect.location()));
132 IntRect Widget::convertFromContainingView(const IntRect& parentRect) const
134 if (const Widget* parentWidget = parent()) {
135 IntRect localRect = parentRect;
136 localRect.setLocation(parentWidget->convertSelfToChild(this, localRect.location()));
143 IntPoint Widget::convertToContainingView(const IntPoint& localPoint) const
145 if (const Widget* parentWidget = parent())
146 return parentWidget->convertChildToSelf(this, localPoint);
151 IntPoint Widget::convertFromContainingView(const IntPoint& parentPoint) const
153 if (const Widget* parentWidget = parent())
154 return parentWidget->convertSelfToChild(this, parentPoint);
159 IntPoint Widget::convertChildToSelf(const Widget*, const IntPoint& point) const
164 IntPoint Widget::convertSelfToChild(const Widget*, const IntPoint& point) const