| /* |
| * Copyright (C) 2004, 2005, 2006, 2010 Apple Inc. All rights reserved. |
| * Copyright (C) 2013 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "platform/Widget.h" |
| |
| |
| #include "wtf/Assertions.h" |
| |
| namespace blink { |
| |
| Widget::Widget() |
| : m_parent(nullptr) |
| , m_selfVisible(false) |
| , m_parentVisible(false) |
| { |
| } |
| |
| Widget::~Widget() |
| { |
| #if !ENABLE(OILPAN) |
| ASSERT(!parent()); |
| #endif |
| } |
| |
| void Widget::trace(Visitor* visitor) |
| { |
| visitor->trace(m_parent); |
| } |
| |
| void Widget::setParent(Widget* widget) |
| { |
| ASSERT(!widget || !m_parent); |
| if (!widget || !widget->isVisible()) |
| setParentVisible(false); |
| m_parent = widget; |
| if (widget && widget->isVisible()) |
| setParentVisible(true); |
| } |
| |
| Widget* Widget::root() const |
| { |
| const Widget* top = this; |
| while (top->parent()) |
| top = top->parent(); |
| if (top->isFrameView()) |
| return const_cast<Widget*>(static_cast<const Widget*>(top)); |
| return 0; |
| } |
| |
| IntRect Widget::convertFromContainingWindow(const IntRect& windowRect) const |
| { |
| if (const Widget* parentWidget = parent()) { |
| IntRect parentRect = parentWidget->convertFromContainingWindow(windowRect); |
| return convertFromContainingView(parentRect); |
| } |
| return windowRect; |
| } |
| |
| IntRect Widget::convertToContainingWindow(const IntRect& localRect) const |
| { |
| if (const Widget* parentWidget = parent()) { |
| IntRect parentRect = convertToContainingView(localRect); |
| return parentWidget->convertToContainingWindow(parentRect); |
| } |
| return localRect; |
| } |
| |
| IntPoint Widget::convertFromContainingWindow(const IntPoint& windowPoint) const |
| { |
| if (const Widget* parentWidget = parent()) { |
| IntPoint parentPoint = parentWidget->convertFromContainingWindow(windowPoint); |
| return convertFromContainingView(parentPoint); |
| } |
| return windowPoint; |
| } |
| |
| FloatPoint Widget::convertFromContainingWindow(const FloatPoint& windowPoint) const |
| { |
| // Widgets / windows are required to be IntPoint aligned, but we may need to convert |
| // FloatPoint values within them (eg. for event co-ordinates). |
| IntPoint flooredPoint = flooredIntPoint(windowPoint); |
| FloatPoint parentPoint = this->convertFromContainingWindow(flooredPoint); |
| FloatSize windowFraction = windowPoint - flooredPoint; |
| // Use linear interpolation handle any fractional value (eg. for iframes subject to a transform |
| // beyond just a simple translation). |
| // FIXME: Add FloatPoint variants of all co-ordinate space conversion APIs. |
| if (!windowFraction.isEmpty()) { |
| const int kFactor = 1000; |
| IntPoint parentLineEnd = this->convertFromContainingWindow(flooredPoint + roundedIntSize(windowFraction.scaledBy(kFactor))); |
| FloatSize parentFraction = (parentLineEnd - parentPoint).scaledBy(1.0f / kFactor); |
| parentPoint.move(parentFraction); |
| } |
| return parentPoint; |
| } |
| |
| IntPoint Widget::convertToContainingWindow(const IntPoint& localPoint) const |
| { |
| if (const Widget* parentWidget = parent()) { |
| IntPoint parentPoint = convertToContainingView(localPoint); |
| return parentWidget->convertToContainingWindow(parentPoint); |
| } |
| return localPoint; |
| } |
| |
| IntRect Widget::convertToContainingView(const IntRect& localRect) const |
| { |
| if (const Widget* parentWidget = parent()) { |
| IntRect parentRect(localRect); |
| parentRect.setLocation(parentWidget->convertChildToSelf(this, localRect.location())); |
| return parentRect; |
| } |
| return localRect; |
| } |
| |
| IntRect Widget::convertFromContainingView(const IntRect& parentRect) const |
| { |
| if (const Widget* parentWidget = parent()) { |
| IntRect localRect = parentRect; |
| localRect.setLocation(parentWidget->convertSelfToChild(this, localRect.location())); |
| return localRect; |
| } |
| |
| return parentRect; |
| } |
| |
| IntPoint Widget::convertToContainingView(const IntPoint& localPoint) const |
| { |
| if (const Widget* parentWidget = parent()) |
| return parentWidget->convertChildToSelf(this, localPoint); |
| |
| return localPoint; |
| } |
| |
| IntPoint Widget::convertFromContainingView(const IntPoint& parentPoint) const |
| { |
| if (const Widget* parentWidget = parent()) |
| return parentWidget->convertSelfToChild(this, parentPoint); |
| |
| return parentPoint; |
| } |
| |
| IntPoint Widget::convertChildToSelf(const Widget*, const IntPoint& point) const |
| { |
| return point; |
| } |
| |
| IntPoint Widget::convertSelfToChild(const Widget*, const IntPoint& point) const |
| { |
| return point; |
| } |
| |
| } // namespace blink |