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| 1 /* | |
| 2 * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. All rights reserved. | |
| 3 * Copyright (C) 2008 Collabora Ltd. All rights reserved. | |
| 4 * Copyright (C) 2013 Google Inc. All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions | |
| 8 * are met: | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * 2. Redistributions in binary form must reproduce the above copyright | |
| 12 * notice, this list of conditions and the following disclaimer in the | |
| 13 * documentation and/or other materials provided with the distribution. | |
| 14 * | |
| 15 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
| 16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
| 19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 26 */ | |
| 27 | |
| 28 #ifndef Widget_h | |
| 29 #define Widget_h | |
| 30 | |
| 31 #include "platform/geometry/IntRect.h" | |
| 32 #include "wtf/Forward.h" | |
| 33 #include "wtf/RefCounted.h" | |
| 34 | |
| 35 namespace WebCore { | |
| 36 | |
| 37 class Cursor; | |
| 38 class Event; | |
| 39 class GraphicsContext; | |
| 40 class HostWindow; | |
| 41 | |
| 42 // The Widget class serves as a base class for three kinds of objects: | |
| 43 // (1) Scrollable areas (ScrollView) | |
| 44 // (2) Scrollbars (Scrollbar) | |
| 45 // (3) Plugins (PluginView) | |
| 46 // | |
| 47 // Widgets are connected in a hierarchy, with the restriction that plugins and | |
| 48 // scrollbars are always leaves of the tree. Only ScrollViews can have children | |
| 49 // (and therefore the Widget class has no concept of children). | |
| 50 class Widget : public RefCounted<Widget> { | |
| 51 public: | |
| 52 Widget(); | |
| 53 virtual ~Widget(); | |
| 54 | |
| 55 int x() const { return frameRect().x(); } | |
| 56 int y() const { return frameRect().y(); } | |
| 57 int width() const { return frameRect().width(); } | |
| 58 int height() const { return frameRect().height(); } | |
| 59 IntSize size() const { return frameRect().size(); } | |
| 60 IntPoint location() const { return frameRect().location(); } | |
| 61 | |
| 62 virtual void setFrameRect(const IntRect& frame) { m_frame = frame; } | |
| 63 const IntRect& frameRect() const { return m_frame; } | |
| 64 IntRect boundsRect() const { return IntRect(0, 0, width(), height()); } | |
| 65 | |
| 66 void resize(int w, int h) { setFrameRect(IntRect(x(), y(), w, h)); } | |
| 67 void resize(const IntSize& s) { setFrameRect(IntRect(location(), s)); } | |
| 68 void move(int x, int y) { setFrameRect(IntRect(x, y, width(), height())); } | |
| 69 void move(const IntPoint& p) { setFrameRect(IntRect(p, size())); } | |
| 70 | |
| 71 virtual void paint(GraphicsContext*, const IntRect&) { } | |
| 72 void invalidate() { invalidateRect(boundsRect()); } | |
| 73 virtual void invalidateRect(const IntRect&) = 0; | |
| 74 | |
| 75 virtual void setFocus(bool) { } | |
| 76 | |
| 77 void setCursor(const Cursor&); | |
| 78 | |
| 79 virtual void show() { } | |
| 80 virtual void hide() { } | |
| 81 bool isSelfVisible() const { return m_selfVisible; } // Whether or not we ha
ve been explicitly marked as visible or not. | |
| 82 bool isParentVisible() const { return m_parentVisible; } // Whether or not o
ur parent is visible. | |
| 83 bool isVisible() const { return m_selfVisible && m_parentVisible; } // Wheth
er or not we are actually visible. | |
| 84 virtual void setParentVisible(bool visible) { m_parentVisible = visible; } | |
| 85 void setSelfVisible(bool v) { m_selfVisible = v; } | |
| 86 | |
| 87 virtual bool isFrameView() const { return false; } | |
| 88 virtual bool isPluginView() const { return false; } | |
| 89 virtual bool isPluginContainer() const { return false; } | |
| 90 virtual bool isScrollbar() const { return false; } | |
| 91 virtual bool isScrollView() const { return false; } | |
| 92 | |
| 93 virtual HostWindow* hostWindow() const; | |
| 94 virtual void setParent(Widget*); | |
| 95 Widget* parent() const { return m_parent; } | |
| 96 Widget* root() const; | |
| 97 | |
| 98 virtual void handleEvent(Event*) { } | |
| 99 | |
| 100 IntRect convertToRootView(const IntRect&) const; | |
| 101 IntRect convertFromRootView(const IntRect&) const; | |
| 102 | |
| 103 IntPoint convertToRootView(const IntPoint&) const; | |
| 104 IntPoint convertFromRootView(const IntPoint&) const; | |
| 105 | |
| 106 // It is important for cross-platform code to realize that Mac has flipped c
oordinates. Therefore any code | |
| 107 // that tries to convert the location of a rect using the point-based conver
tFromContainingWindow will end | |
| 108 // up with an inaccurate rect. Always make sure to use the rect-based conve
rtFromContainingWindow method | |
| 109 // when converting window rects. | |
| 110 IntRect convertToContainingWindow(const IntRect&) const; | |
| 111 IntRect convertFromContainingWindow(const IntRect&) const; | |
| 112 | |
| 113 IntPoint convertToContainingWindow(const IntPoint&) const; | |
| 114 IntPoint convertFromContainingWindow(const IntPoint&) const; | |
| 115 | |
| 116 virtual void frameRectsChanged() { } | |
| 117 | |
| 118 // Notifies this widget that other widgets on the page have been repositione
d. | |
| 119 virtual void widgetPositionsUpdated() {} | |
| 120 | |
| 121 // Notifies this widget that its clip rect changed. | |
| 122 virtual void clipRectChanged() { } | |
| 123 | |
| 124 // Virtual methods to convert points to/from the containing ScrollView | |
| 125 virtual IntRect convertToContainingView(const IntRect&) const; | |
| 126 virtual IntRect convertFromContainingView(const IntRect&) const; | |
| 127 virtual IntPoint convertToContainingView(const IntPoint&) const; | |
| 128 virtual IntPoint convertFromContainingView(const IntPoint&) const; | |
| 129 | |
| 130 // Virtual methods to convert points to/from child widgets | |
| 131 virtual IntPoint convertChildToSelf(const Widget*, const IntPoint&) const; | |
| 132 virtual IntPoint convertSelfToChild(const Widget*, const IntPoint&) const; | |
| 133 | |
| 134 // Notifies this widget that it will no longer be receiving events. | |
| 135 virtual void eventListenersRemoved() { } | |
| 136 | |
| 137 private: | |
| 138 Widget* m_parent; | |
| 139 IntRect m_frame; | |
| 140 bool m_selfVisible; | |
| 141 bool m_parentVisible; | |
| 142 }; | |
| 143 | |
| 144 } // namespace WebCore | |
| 145 | |
| 146 #endif // Widget_h | |
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Chromium Code Reviews
Issue 27048004:
Move PlatformScreen, PlatformScreenChromium, and Widget to Source/platform (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink@master