1/*
2 * Copyright (C) 2013 Apple 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''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef ViewGestureGeometryCollector_h
27#define ViewGestureGeometryCollector_h
28
29#include "MessageReceiver.h"
30#include <wtf/RunLoop.h>
31
32namespace WebCore {
33class FloatPoint;
34class FloatRect;
35class Node;
36}
37
38namespace WebKit {
39
40class WebPage;
41
42class ViewGestureGeometryCollector : private IPC::MessageReceiver {
43public:
44 ViewGestureGeometryCollector(WebPage&);
45 ~ViewGestureGeometryCollector();
46
47 void mainFrameDidLayout();
48
49 void computeZoomInformationForNode(WebCore::Node&, WebCore::FloatPoint& origin, WebCore::FloatRect& renderRect, bool& isReplaced, double& viewportMinimumScale, double& viewportMaximumScale);
50
51private:
52 // IPC::MessageReceiver.
53 void didReceiveMessage(IPC::Connection&, IPC::Decoder&) override;
54
55 // Message handlers.
56 void collectGeometryForSmartMagnificationGesture(WebCore::FloatPoint origin);
57
58#if PLATFORM(MAC)
59 void collectGeometryForMagnificationGesture();
60#endif
61#if !PLATFORM(IOS_FAMILY)
62 void setRenderTreeSizeNotificationThreshold(uint64_t);
63 void sendDidHitRenderTreeSizeThresholdIfNeeded();
64#endif
65
66 void dispatchDidCollectGeometryForSmartMagnificationGesture(WebCore::FloatPoint origin, WebCore::FloatRect targetRect, WebCore::FloatRect visibleContentRect, bool fitEntireRect, double viewportMinimumScale, double viewportMaximumScale);
67 void computeMinimumAndMaximumViewportScales(double& viewportMinimumScale, double& viewportMaximumScale) const;
68
69#if PLATFORM(IOS_FAMILY)
70 Optional<std::pair<double, double>> computeTextLegibilityScales(double& viewportMinimumScale, double& viewportMaximumScale);
71#endif
72
73 WebPage& m_webPage;
74
75#if !PLATFORM(IOS_FAMILY)
76 uint64_t m_renderTreeSizeNotificationThreshold;
77#else
78 Optional<std::pair<double, double>> m_cachedTextLegibilityScales;
79#endif
80};
81
82} // namespace WebKit
83
84#endif // ViewGestureGeometryCollector
85