| /* |
| * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. All rights reserved. |
| * Copyright (C) 2008 Collabora Ltd. 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. |
| */ |
| |
| #ifndef Widget_h |
| #define Widget_h |
| |
| #include "platform/PlatformExport.h" |
| #include "platform/geometry/FloatPoint.h" |
| #include "platform/geometry/IntRect.h" |
| #include "platform/heap/Handle.h" |
| #include "public/platform/WebFocusType.h" |
| #include "wtf/Forward.h" |
| |
| namespace blink { |
| |
| class CullRect; |
| class Event; |
| class GraphicsContext; |
| class HostWindow; |
| |
| // The Widget class serves as a base class for FrameView, Scrollbar, and |
| // PluginView. |
| // |
| // Widgets are connected in a hierarchy, with the restriction that plugins and |
| // scrollbars are always leaves of the tree. Only FrameView can have children |
| // (and therefore the Widget class has no concept of children). |
| class PLATFORM_EXPORT Widget : public GarbageCollectedFinalized<Widget> { |
| public: |
| Widget(); |
| virtual ~Widget(); |
| |
| int x() const { return frameRect().x(); } |
| int y() const { return frameRect().y(); } |
| int width() const { return frameRect().width(); } |
| int height() const { return frameRect().height(); } |
| IntSize size() const { return frameRect().size(); } |
| IntPoint location() const { return frameRect().location(); } |
| |
| virtual void setFrameRect(const IntRect& frameRect) { |
| m_frameRect = frameRect; |
| } |
| const IntRect& frameRect() const { return m_frameRect; } |
| IntRect boundsRect() const { return IntRect(0, 0, width(), height()); } |
| |
| void resize(int w, int h) { setFrameRect(IntRect(x(), y(), w, h)); } |
| void resize(const IntSize& s) { setFrameRect(IntRect(location(), s)); } |
| |
| virtual void paint(GraphicsContext&, const CullRect&) const {} |
| void invalidate() { invalidateRect(boundsRect()); } |
| virtual void invalidateRect(const IntRect&) = 0; |
| |
| virtual void setFocus(bool, WebFocusType) {} |
| |
| virtual void show() {} |
| virtual void hide() {} |
| bool isSelfVisible() const { |
| return m_selfVisible; |
| } // Whether or not we have been explicitly marked as visible or not. |
| bool isParentVisible() const { |
| return m_parentVisible; |
| } // Whether or not our parent is visible. |
| bool isVisible() const { |
| return m_selfVisible && m_parentVisible; |
| } // Whether or not we are actually visible. |
| virtual void setParentVisible(bool visible) { m_parentVisible = visible; } |
| void setSelfVisible(bool v) { m_selfVisible = v; } |
| |
| virtual bool isFrameView() const { return false; } |
| virtual bool isRemoteFrameView() const { return false; } |
| virtual bool isPluginView() const { return false; } |
| virtual bool isPluginContainer() const { return false; } |
| virtual bool isScrollbar() const { return false; } |
| |
| virtual void setParent(Widget*); |
| Widget* parent() const { return m_parent; } |
| Widget* root() const; |
| |
| virtual void handleEvent(Event*) {} |
| |
| IntRect convertToRootFrame(const IntRect&) const; |
| IntRect convertFromRootFrame(const IntRect&) const; |
| |
| IntPoint convertToRootFrame(const IntPoint&) const; |
| IntPoint convertFromRootFrame(const IntPoint&) const; |
| FloatPoint convertFromRootFrame(const FloatPoint&) const; |
| |
| virtual void frameRectsChanged() {} |
| |
| virtual void widgetGeometryMayHaveChanged() {} |
| |
| virtual IntRect convertToContainingWidget(const IntRect&) const; |
| virtual IntRect convertFromContainingWidget(const IntRect&) const; |
| virtual IntPoint convertToContainingWidget(const IntPoint&) const; |
| virtual IntPoint convertFromContainingWidget(const IntPoint&) const; |
| |
| // Virtual methods to convert points to/from child widgets |
| virtual IntPoint convertChildToSelf(const Widget*, const IntPoint&) const; |
| virtual IntPoint convertSelfToChild(const Widget*, const IntPoint&) const; |
| |
| // Notifies this widget that it will no longer be receiving events. |
| virtual void eventListenersRemoved() {} |
| |
| DECLARE_VIRTUAL_TRACE(); |
| virtual void dispose() {} |
| |
| private: |
| Member<Widget> m_parent; |
| IntRect m_frameRect; |
| bool m_selfVisible; |
| bool m_parentVisible; |
| }; |
| |
| } // namespace blink |
| |
| #endif // Widget_h |