1 // Copyright (c) 2012 Marshall A. Greenblatt. All rights reserved.
3 // Redistribution and use in source and binary forms, with or without
4 // modification, are permitted provided that the following conditions are
7 // * Redistributions of source code must retain the above copyright
8 // notice, this list of conditions and the following disclaimer.
9 // * Redistributions in binary form must reproduce the above
10 // copyright notice, this list of conditions and the following disclaimer
11 // in the documentation and/or other materials provided with the
13 // * Neither the name of Google Inc. nor the name Chromium Embedded
14 // Framework nor the names of its contributors may be used to endorse
15 // or promote products derived from this software without specific prior
16 // written permission.
18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 // ---------------------------------------------------------------------------
32 // The contents of this file must follow a specific format in order to
33 // support the CEF translator tool. See the translator.README.txt file in the
34 // tools directory for more information.
37 #ifndef CEF_INCLUDE_CEF_RENDER_HANDLER_H_
38 #define CEF_INCLUDE_CEF_RENDER_HANDLER_H_
41 #include "include/cef_base.h"
42 #include "include/cef_browser.h"
46 // Implement this interface to handle events when window rendering is disabled.
47 // The methods of this class will be called on the UI thread.
49 /*--cef(source=client)--*/
50 class CefRenderHandler : public virtual CefBase {
52 typedef cef_paint_element_type_t PaintElementType;
53 typedef std::vector<CefRect> RectList;
56 // Called to retrieve the root window rectangle in screen coordinates. Return
57 // true if the rectangle was provided.
60 virtual bool GetRootScreenRect(CefRefPtr<CefBrowser> browser,
61 CefRect& rect) { return false; }
64 // Called to retrieve the view rectangle which is relative to screen
65 // coordinates. Return true if the rectangle was provided.
68 virtual bool GetViewRect(CefRefPtr<CefBrowser> browser, CefRect& rect) =0;
71 // Called to retrieve the translation from view coordinates to actual screen
72 // coordinates. Return true if the screen coordinates were provided.
75 virtual bool GetScreenPoint(CefRefPtr<CefBrowser> browser,
79 int& screenY) { return false; }
82 // Called to allow the client to fill in the CefScreenInfo object with
83 // appropriate values. Return true if the |screen_info| structure has been
86 // If the screen info rectangle is left empty the rectangle from GetViewRect
87 // will be used. If the rectangle is still empty or invalid popups may not be
91 virtual bool GetScreenInfo(CefRefPtr<CefBrowser> browser,
92 CefScreenInfo& screen_info) { return false; }
95 // Called when the browser wants to show or hide the popup widget. The popup
96 // should be shown if |show| is true and hidden if |show| is false.
99 virtual void OnPopupShow(CefRefPtr<CefBrowser> browser,
103 // Called when the browser wants to move or resize the popup widget. |rect|
104 // contains the new location and size.
107 virtual void OnPopupSize(CefRefPtr<CefBrowser> browser,
108 const CefRect& rect) {}
111 // Called when an element should be painted. |type| indicates whether the
112 // element is the view or the popup widget. |buffer| contains the pixel data
113 // for the whole image. |dirtyRects| contains the set of rectangles that need
114 // to be repainted. On Windows |buffer| will be |width|*|height|*4 bytes
115 // in size and represents a BGRA image with an upper-left origin.
118 virtual void OnPaint(CefRefPtr<CefBrowser> browser,
119 PaintElementType type,
120 const RectList& dirtyRects,
122 int width, int height) =0;
125 // Called when the browser window's cursor has changed.
128 virtual void OnCursorChange(CefRefPtr<CefBrowser> browser,
129 CefCursorHandle cursor) {}
132 // Called when the scroll offset has changed.
135 virtual void OnScrollOffsetChanged(CefRefPtr<CefBrowser> browser) {}
138 #endif // CEF_INCLUDE_CEF_RENDER_HANDLER_H_