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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 FrameViewBase_h | |
| 29 #define FrameViewBase_h | |
| 30 | |
| 31 #include "platform/PlatformExport.h" | |
| 32 #include "platform/geometry/FloatPoint.h" | |
| 33 #include "platform/geometry/IntRect.h" | |
| 34 #include "platform/heap/Handle.h" | |
| 35 | |
| 36 namespace blink { | |
| 37 | |
| 38 // The FrameViewBase class is the parent of Scrollbar. | |
| 39 // TODO(joelhockey): Move core/paint/ScrollbarManager to platform/scroll | |
| 40 // and use it to replace this class. | |
| 41 class PLATFORM_EXPORT FrameViewBase : public GarbageCollectedMixin { | |
| 42 public: | |
| 43 FrameViewBase(){}; | |
| 44 virtual ~FrameViewBase(){}; | |
| 45 | |
| 46 virtual IntPoint Location() const = 0; | |
| 47 | |
| 48 virtual bool IsFrameView() const { return false; } | |
| 49 | |
| 50 virtual FrameViewBase* Parent() const = 0; | |
| 51 | |
| 52 // ConvertFromRootFrame must be in FrameViewBase rather than FrameView | |
| 53 // to be visible to Scrollbar::ConvertFromRootFrame and | |
| 54 // RemoteFrameView::UpdateRemoteViewportIntersection. The related | |
| 55 // ConvertFromContainingFrameViewBase must be declared locally to be visible. | |
| 56 IntRect ConvertFromRootFrame(const IntRect& rect_in_root_frame) const { | |
| 57 if (const FrameViewBase* parent_frame_view_base = Parent()) { | |
| 58 IntRect parent_rect = | |
| 59 parent_frame_view_base->ConvertFromRootFrame(rect_in_root_frame); | |
| 60 return ConvertFromContainingFrameViewBase(parent_rect); | |
| 61 } | |
| 62 return rect_in_root_frame; | |
| 63 } | |
| 64 | |
| 65 IntPoint ConvertFromRootFrame(const IntPoint& point_in_root_frame) const { | |
| 66 if (const FrameViewBase* parent_frame_view_base = Parent()) { | |
| 67 IntPoint parent_point = | |
| 68 parent_frame_view_base->ConvertFromRootFrame(point_in_root_frame); | |
| 69 return ConvertFromContainingFrameViewBase(parent_point); | |
| 70 } | |
| 71 return point_in_root_frame; | |
| 72 } | |
| 73 | |
| 74 FloatPoint ConvertFromRootFrame(const FloatPoint& point_in_root_frame) const { | |
| 75 // FrameViewBase / windows are required to be IntPoint aligned, but we may | |
| 76 // need to convert FloatPoint values within them (eg. for event | |
| 77 // co-ordinates). | |
| 78 IntPoint floored_point = FlooredIntPoint(point_in_root_frame); | |
| 79 FloatPoint parent_point = ConvertFromRootFrame(floored_point); | |
| 80 FloatSize window_fraction = point_in_root_frame - floored_point; | |
| 81 // Use linear interpolation handle any fractional value (eg. for iframes | |
| 82 // subject to a transform beyond just a simple translation). | |
| 83 // FIXME: Add FloatPoint variants of all co-ordinate space conversion APIs. | |
| 84 if (!window_fraction.IsEmpty()) { | |
| 85 const int kFactor = 1000; | |
| 86 IntPoint parent_line_end = ConvertFromRootFrame( | |
| 87 floored_point + RoundedIntSize(window_fraction.ScaledBy(kFactor))); | |
| 88 FloatSize parent_fraction = | |
| 89 (parent_line_end - parent_point).ScaledBy(1.0f / kFactor); | |
| 90 parent_point.Move(parent_fraction); | |
| 91 } | |
| 92 return parent_point; | |
| 93 } | |
| 94 | |
| 95 virtual IntRect ConvertFromContainingFrameViewBase(const IntRect&) const = 0; | |
| 96 virtual IntPoint ConvertFromContainingFrameViewBase( | |
| 97 const IntPoint&) const = 0; | |
| 98 | |
| 99 virtual void Dispose() {} | |
| 100 }; | |
| 101 | |
| 102 } // namespace blink | |
| 103 | |
| 104 #endif // FrameViewBase_h | |
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Chromium Code Reviews
Issue 2855523002:
Deleted Widget/FrameViewBase (Closed)
