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| 1 /* | |
| 2 * Copyright (C) 2012 Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND AN
Y | |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
| 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN
Y | |
| 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
| 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O
N | |
| 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 23 */ | |
| 24 | |
| 25 #ifndef WebScrollbar_h | |
| 26 #define WebScrollbar_h | |
| 27 | |
| 28 #include "WebPoint.h" | |
| 29 #include "WebRect.h" | |
| 30 #include "WebSize.h" | |
| 31 #include "WebVector.h" | |
| 32 #if INSIDE_BLINK | |
| 33 #include "wtf/PassOwnPtr.h" | |
| 34 #endif | |
| 35 | |
| 36 namespace blink { | |
| 37 | |
| 38 // A const accessor interface for a WebKit scrollbar | |
| 39 class BLINK_PLATFORM_EXPORT WebScrollbar { | |
| 40 public: | |
| 41 enum Orientation { | |
| 42 Horizontal, | |
| 43 Vertical | |
| 44 }; | |
| 45 | |
| 46 enum ScrollDirection { | |
| 47 ScrollBackward, | |
| 48 ScrollForward | |
| 49 }; | |
| 50 | |
| 51 enum ScrollGranularity { | |
| 52 ScrollByLine, | |
| 53 ScrollByPage, | |
| 54 ScrollByDocument, | |
| 55 ScrollByPixel | |
| 56 }; | |
| 57 | |
| 58 enum ScrollbarPart { | |
| 59 NoPart, | |
| 60 BackTrackPart, | |
| 61 ThumbPart, | |
| 62 ForwardTrackPart, | |
| 63 }; | |
| 64 | |
| 65 enum ScrollbarOverlayStyle { | |
| 66 ScrollbarOverlayStyleDefault, | |
| 67 ScrollbarOverlayStyleLight | |
| 68 }; | |
| 69 | |
| 70 virtual ~WebScrollbar() { } | |
| 71 | |
| 72 // Return true if this is an overlay scrollbar. | |
| 73 virtual bool isOverlay() const = 0; | |
| 74 | |
| 75 // Gets the current value (i.e. position inside the region). | |
| 76 virtual int value() const = 0; | |
| 77 | |
| 78 virtual WebPoint location() const = 0; | |
| 79 virtual WebSize size() const = 0; | |
| 80 virtual bool enabled() const = 0; | |
| 81 virtual int maximum() const = 0; | |
| 82 virtual int totalSize() const = 0; | |
| 83 virtual bool isScrollableAreaActive() const = 0; | |
| 84 virtual ScrollbarPart pressedPart() const = 0; | |
| 85 virtual ScrollbarPart hoveredPart() const = 0; | |
| 86 virtual ScrollbarOverlayStyle scrollbarOverlayStyle() const = 0; | |
| 87 virtual Orientation orientation() const = 0; | |
| 88 virtual bool isLeftSideVerticalScrollbar() const = 0; | |
| 89 }; | |
| 90 | |
| 91 } // namespace blink | |
| 92 | |
| 93 #endif | |
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