1 /*

     2  * Copyright (C) 2010 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 are

     6  * met:

     7  *

     8  *     * Redistributions of source code must retain the above copyright

     9  * notice, this list of conditions and the following disclaimer.

    10  *     * Redistributions in binary form must reproduce the above

    11  * copyright notice, this list of conditions and the following disclaimer

    12  * in the documentation and/or other materials provided with the

    13  * distribution.

    14  *     * Neither the name of Google Inc. nor the names of its

    15  * contributors may be used to endorse or promote products derived from

    16  * this software without specific prior written permission.

    17  *

    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

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    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.

    29  */

    30 

    31 // This implements the WebThemeEngine API used by the Windows version of

    32 // Chromium to render native form controls like checkboxes, radio buttons,

    33 // and scroll bars.

    34 // The normal implementation (native_theme) renders the controls using either

    35 // the UXTheme theming engine present in XP, Vista, and Win 7, or the "classic"

    36 // theme used if that theme is selected in the Desktop settings.

    37 // Unfortunately, both of these themes render controls differently on the

    38 // different versions of Windows.

    39 //

    40 // In order to ensure maximum consistency of baselines across the different

    41 // Windows versions, we provide a simple implementation for DRT here

    42 // instead. These controls are actually platform-independent (they're rendered

    43 // using Skia) and could be used on Linux and the Mac as well, should we

    44 // choose to do so at some point.

    45 //

    46 

    47 #ifndef WebThemeEngineDRT_h

    48 #define WebThemeEngineDRT_h

    49 

    50 #include "public/WebThemeEngine.h"

    51 #include <wtf/Noncopyable.h>

    52 

    53 class WebThemeEngineDRT : public WebKit::WebThemeEngine, public Noncopyable {

    54 public:

    55     WebThemeEngineDRT() {}

    56 

    57     // WebThemeEngine methods:

    58     virtual void paintButton(

    59         WebKit::WebCanvas*, int part, int state, int classicState,

    60         const WebKit::WebRect&);

    61 

    62     virtual void paintMenuList(

    63         WebKit::WebCanvas*, int part, int state, int classicState,

    64         const WebKit::WebRect&);

    65 

    66     virtual void paintScrollbarArrow(

    67         WebKit::WebCanvas*, int state, int classicState,

    68         const WebKit::WebRect&);

    69 

    70     virtual void paintScrollbarThumb(

    71         WebKit::WebCanvas*, int part, int state, int classicState,

    72         const WebKit::WebRect&);

    73 

    74     virtual void paintScrollbarTrack(

    75         WebKit::WebCanvas*, int part, int state, int classicState,

    76         const WebKit::WebRect&, const WebKit::WebRect& alignRect);

    77 

    78     virtual void paintSpinButton(

    79         WebKit::WebCanvas*, int part, int state, int classicState,

    80         const WebKit::WebRect&);

    81 

    82     virtual void paintTextField(

    83         WebKit::WebCanvas*, int part, int state, int classicState,

    84         const WebKit::WebRect&, WebKit::WebColor, bool fillContentArea,

    85         bool drawEdges);

    86 

    87     virtual void paintTrackbar(

    88         WebKit::WebCanvas*, int part, int state, int classicState,

    89         const WebKit::WebRect&);

    90 

    91     virtual void paintProgressBar(

    92         WebKit::WebCanvas*, const WebKit::WebRect& barRect,

    93         const WebKit::WebRect& valueRect,

    94         bool determinate, double time);

    95 };

    96 

    97 #endif // WebThemeEngineDRT_h