1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "webkit/child/webthemeengine_impl_mac.h" 6 7 #include <Carbon/Carbon.h> 8 9 #include "skia/ext/skia_utils_mac.h" 10 #include "third_party/WebKit/public/platform/WebCanvas.h" 11 #include "third_party/WebKit/public/platform/WebRect.h" 12 13 using blink::WebCanvas; 14 using blink::WebRect; 15 using blink::WebThemeEngine; 16 17 namespace webkit_glue { 18 19 static ThemeTrackEnableState stateToHIEnableState(WebThemeEngine::State state) { 20 switch (state) { 21 case WebThemeEngine::StateDisabled: 22 return kThemeTrackDisabled; 23 case WebThemeEngine::StateInactive: 24 return kThemeTrackInactive; 25 default: 26 return kThemeTrackActive; 27 } 28 } 29 30 void WebThemeEngineImpl::paintScrollbarThumb( 31 WebCanvas* canvas, 32 WebThemeEngine::State state, 33 WebThemeEngine::Size size, 34 const WebRect& rect, 35 const WebThemeEngine::ScrollbarInfo& scrollbarInfo) { 36 HIThemeTrackDrawInfo trackInfo; 37 trackInfo.version = 0; 38 trackInfo.kind = size == WebThemeEngine::SizeRegular ? 39 kThemeMediumScrollBar : kThemeSmallScrollBar; 40 trackInfo.bounds = CGRectMake(rect.x, rect.y, rect.width, rect.height); 41 trackInfo.min = 0; 42 trackInfo.max = scrollbarInfo.maxValue; 43 trackInfo.value = scrollbarInfo.currentValue; 44 trackInfo.trackInfo.scrollbar.viewsize = scrollbarInfo.visibleSize; 45 trackInfo.attributes = 0; 46 if (scrollbarInfo.orientation == 47 WebThemeEngine::ScrollbarOrientationHorizontal) { 48 trackInfo.attributes |= kThemeTrackHorizontal; 49 } 50 51 trackInfo.enableState = stateToHIEnableState(state); 52 53 trackInfo.trackInfo.scrollbar.pressState = 54 state == WebThemeEngine::StatePressed ? kThemeThumbPressed : 0; 55 trackInfo.attributes |= (kThemeTrackShowThumb | kThemeTrackHideTrack); 56 gfx::SkiaBitLocker bitLocker(canvas); 57 CGContextRef cgContext = bitLocker.cgContext(); 58 HIThemeDrawTrack(&trackInfo, 0, cgContext, kHIThemeOrientationNormal); 59 } 60 61 } // namespace webkit_glue 62
