1 // Copyright 2013 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/renderer/compositor_bindings/scrollbar_impl.h" 6 7 #include "base/logging.h" 8 #include "third_party/WebKit/public/platform/WebScrollbar.h" 9 #include "third_party/WebKit/public/platform/WebScrollbarThemeGeometry.h" 10 11 using blink::WebScrollbar; 12 13 namespace webkit { 14 15 ScrollbarImpl::ScrollbarImpl( 16 scoped_ptr<WebScrollbar> scrollbar, 17 blink::WebScrollbarThemePainter painter, 18 scoped_ptr<blink::WebScrollbarThemeGeometry> geometry) 19 : scrollbar_(scrollbar.Pass()), 20 painter_(painter), 21 geometry_(geometry.Pass()) {} 22 23 ScrollbarImpl::~ScrollbarImpl() {} 24 25 cc::ScrollbarOrientation ScrollbarImpl::Orientation() const { 26 if (scrollbar_->orientation() == WebScrollbar::Horizontal) 27 return cc::HORIZONTAL; 28 return cc::VERTICAL; 29 } 30 31 bool ScrollbarImpl::IsLeftSideVerticalScrollbar() const { 32 return scrollbar_->isLeftSideVerticalScrollbar(); 33 } 34 35 bool ScrollbarImpl::HasThumb() const { 36 return geometry_->hasThumb(scrollbar_.get()); 37 } 38 39 bool ScrollbarImpl::IsOverlay() const { 40 return scrollbar_->isOverlay(); 41 } 42 43 gfx::Point ScrollbarImpl::Location() const { 44 return scrollbar_->location(); 45 } 46 47 int ScrollbarImpl::ThumbThickness() const { 48 gfx::Rect thumb_rect = geometry_->thumbRect(scrollbar_.get()); 49 if (scrollbar_->orientation() == WebScrollbar::Horizontal) 50 return thumb_rect.height(); 51 return thumb_rect.width(); 52 } 53 54 int ScrollbarImpl::ThumbLength() const { 55 gfx::Rect thumb_rect = geometry_->thumbRect(scrollbar_.get()); 56 if (scrollbar_->orientation() == WebScrollbar::Horizontal) 57 return thumb_rect.width(); 58 return thumb_rect.height(); 59 } 60 61 gfx::Rect ScrollbarImpl::TrackRect() const { 62 return geometry_->trackRect(scrollbar_.get()); 63 } 64 65 void ScrollbarImpl::PaintPart( 66 SkCanvas* canvas, cc::ScrollbarPart part, gfx::Rect content_rect) { 67 if (part == cc::THUMB) { 68 painter_.paintThumb(canvas, content_rect); 69 return; 70 } 71 72 // The following is a simplification of ScrollbarThemeComposite::paint. 73 painter_.paintScrollbarBackground(canvas, content_rect); 74 75 if (geometry_->hasButtons(scrollbar_.get())) { 76 gfx::Rect back_button_start_paint_rect = 77 geometry_->backButtonStartRect(scrollbar_.get()); 78 painter_.paintBackButtonStart(canvas, back_button_start_paint_rect); 79 80 gfx::Rect back_button_end_paint_rect = 81 geometry_->backButtonEndRect(scrollbar_.get()); 82 painter_.paintBackButtonEnd(canvas, back_button_end_paint_rect); 83 84 gfx::Rect forward_button_start_paint_rect = 85 geometry_->forwardButtonStartRect(scrollbar_.get()); 86 painter_.paintForwardButtonStart(canvas, 87 forward_button_start_paint_rect); 88 89 gfx::Rect forward_button_end_paint_rect = 90 geometry_->forwardButtonEndRect(scrollbar_.get()); 91 painter_.paintForwardButtonEnd(canvas, forward_button_end_paint_rect); 92 } 93 94 gfx::Rect track_paint_rect = geometry_->trackRect(scrollbar_.get()); 95 painter_.paintTrackBackground(canvas, track_paint_rect); 96 97 bool thumb_present = geometry_->hasThumb(scrollbar_.get()); 98 if (thumb_present) { 99 painter_.paintForwardTrackPart(canvas, track_paint_rect); 100 painter_.paintBackTrackPart(canvas, track_paint_rect); 101 } 102 103 painter_.paintTickmarks(canvas, track_paint_rect); 104 } 105 106 } // namespace webkit 107
