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 ANY 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 ANY 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 ON 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 WebPluginScrollbar_h 26 #define WebPluginScrollbar_h 27 28 #include "../platform/WebCanvas.h" 29 #include "../platform/WebScrollbar.h" 30 31 namespace blink { 32 33 class WebInputEvent; 34 class WebPluginContainer; 35 class WebPluginScrollbarClient; 36 struct WebRect; 37 38 class WebPluginScrollbar : public WebScrollbar { 39 public: 40 // Creates a WebPluginScrollbar for use by a plugin. The plugin container and 41 // client are guaranteed to outlive this object. 42 BLINK_EXPORT static WebPluginScrollbar* createForPlugin(WebScrollbar::Orientation, 43 WebPluginContainer*, 44 WebPluginScrollbarClient*); 45 ~WebPluginScrollbar()46 virtual ~WebPluginScrollbar() { } 47 48 // Gets the thickness of the scrollbar in pixels. 49 BLINK_EXPORT static int defaultThickness(); 50 51 // Sets the rectangle of the scrollbar. 52 virtual void setLocation(const WebRect&) = 0; 53 54 // Sets the size of the scrollable region in pixels, i.e. if a document is 55 // 800x10000 pixels and the viewport is 1000x1000 pixels, then setLocation 56 // for the vertical scrollbar would have passed in a rectangle like: 57 // (800 - defaultThickness(), 0) (defaultThickness() x 10000) 58 // and setDocumentSize(10000) 59 virtual void setDocumentSize(int) = 0; 60 61 // Sets the current value. 62 virtual void setValue(int position) = 0; 63 64 // Scroll back or forward with the given granularity. 65 virtual void scroll(ScrollDirection, ScrollGranularity, float multiplier) = 0; 66 67 // Paint the given rectangle. 68 virtual void paint(WebCanvas*, const WebRect&) = 0; 69 70 // Returns true iff the given event was used. 71 virtual bool handleInputEvent(const WebInputEvent&) = 0; 72 }; 73 74 } // namespace blink 75 76 #endif 77