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author | Steve Block <steveblock@google.com> | 2011-05-06 11:45:16 +0100 |
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committer | Steve Block <steveblock@google.com> | 2011-05-12 13:44:10 +0100 |
commit | cad810f21b803229eb11403f9209855525a25d57 (patch) | |
tree | 29a6fd0279be608e0fe9ffe9841f722f0f4e4269 /Source/WebCore/platform/ScrollbarTheme.h | |
parent | 121b0cf4517156d0ac5111caf9830c51b69bae8f (diff) | |
download | external_webkit-cad810f21b803229eb11403f9209855525a25d57.zip external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.gz external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.bz2 |
Merge WebKit at r75315: Initial merge by git.
Change-Id: I570314b346ce101c935ed22a626b48c2af266b84
Diffstat (limited to 'Source/WebCore/platform/ScrollbarTheme.h')
-rw-r--r-- | Source/WebCore/platform/ScrollbarTheme.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/Source/WebCore/platform/ScrollbarTheme.h b/Source/WebCore/platform/ScrollbarTheme.h new file mode 100644 index 0000000..0efaf7a --- /dev/null +++ b/Source/WebCore/platform/ScrollbarTheme.h @@ -0,0 +1,97 @@ +/* + * Copyright (C) 2008 Apple 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 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 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 ScrollbarTheme_h +#define ScrollbarTheme_h + +#include "GraphicsContext.h" +#include "IntRect.h" +#include "ScrollTypes.h" + +namespace WebCore { + +class PlatformMouseEvent; +class Scrollbar; +class ScrollView; + +class ScrollbarTheme : public Noncopyable { +public: + virtual ~ScrollbarTheme() {}; + + virtual bool paint(Scrollbar*, GraphicsContext*, const IntRect& /*damageRect*/) { return false; } + virtual ScrollbarPart hitTest(Scrollbar*, const PlatformMouseEvent&) { return NoPart; } + + virtual int scrollbarThickness(ScrollbarControlSize = RegularScrollbar) { return 0; } + + virtual ScrollbarButtonsPlacement buttonsPlacement() const { return ScrollbarButtonsSingle; } + + virtual bool supportsControlTints() const { return false; } + + virtual void themeChanged() {} + + virtual bool invalidateOnMouseEnterExit() { return false; } + + void invalidateParts(Scrollbar* scrollbar, ScrollbarControlPartMask mask) + { + if (mask & BackButtonStartPart) + invalidatePart(scrollbar, BackButtonStartPart); + if (mask & ForwardButtonStartPart) + invalidatePart(scrollbar, ForwardButtonStartPart); + if (mask & BackTrackPart) + invalidatePart(scrollbar, BackTrackPart); + if (mask & ThumbPart) + invalidatePart(scrollbar, ThumbPart); + if (mask & ForwardTrackPart) + invalidatePart(scrollbar, ForwardTrackPart); + if (mask & BackButtonEndPart) + invalidatePart(scrollbar, BackButtonEndPart); + if (mask & ForwardButtonEndPart) + invalidatePart(scrollbar, ForwardButtonEndPart); + } + + virtual void invalidatePart(Scrollbar*, ScrollbarPart) {} + + virtual void paintScrollCorner(ScrollView*, GraphicsContext* context, const IntRect& cornerRect) { context->fillRect(cornerRect, Color::white, ColorSpaceDeviceRGB); } + + virtual bool shouldCenterOnThumb(Scrollbar*, const PlatformMouseEvent&) { return false; } + virtual bool shouldSnapBackToDragOrigin(Scrollbar*, const PlatformMouseEvent&) { return false; } + virtual int thumbPosition(Scrollbar*) { return 0; } // The position of the thumb relative to the track. + virtual int thumbLength(Scrollbar*) { return 0; } // The length of the thumb along the axis of the scrollbar. + virtual int trackPosition(Scrollbar*) { return 0; } // The position of the track relative to the scrollbar. + virtual int trackLength(Scrollbar*) { return 0; } // The length of the track along the axis of the scrollbar. + + virtual int maxOverlapBetweenPages() { return std::numeric_limits<int>::max(); } + + virtual double initialAutoscrollTimerDelay() { return 0.25; } + virtual double autoscrollTimerDelay() { return 0.05; } + + virtual void registerScrollbar(Scrollbar*) {} + virtual void unregisterScrollbar(Scrollbar*) {} + + static ScrollbarTheme* nativeTheme(); // Must be implemented to return the correct theme subclass. +}; + +} +#endif |