cc/test/fake_scrollbar.cc

   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 "cc/test/fake_scrollbar.h"
   6
   7 #include "third_party/skia/include/core/SkCanvas.h"
   8 #include "ui/gfx/skia_util.h"
   9
  10 namespace cc {
  11
  12 FakeScrollbar::FakeScrollbar()
  13     : paint_(false),
  14       has_thumb_(false),
  15       is_overlay_(false),
  16       thumb_thickness_(10),
  17       thumb_length_(5),
  18       track_rect_(0, 0, 100, 10),
  19       fill_color_(SK_ColorGREEN) {}
  20
  21 FakeScrollbar::FakeScrollbar(bool paint, bool has_thumb, bool is_overlay)
  22     : paint_(paint),
  23       has_thumb_(has_thumb),
  24       is_overlay_(is_overlay),
  25       thumb_thickness_(10),
  26       thumb_length_(5),
  27       track_rect_(0, 0, 100, 10),
  28       fill_color_(SK_ColorGREEN) {}
  29
  30 FakeScrollbar::~FakeScrollbar() {}
  31
  32 ScrollbarOrientation FakeScrollbar::Orientation() const {
  33   return HORIZONTAL;
  34 }
  35
  36 bool FakeScrollbar::IsLeftSideVerticalScrollbar() const {
  37   return false;
  38 }
  39
  40 gfx::Point FakeScrollbar::Location() const { return location_; }
  41
  42 bool FakeScrollbar::IsOverlay() const { return is_overlay_; }
  43
  44 bool FakeScrollbar::HasThumb() const { return has_thumb_; }
  45
  46 int FakeScrollbar::ThumbThickness() const {
  47   return thumb_thickness_;
  48 }
  49
  50 int FakeScrollbar::ThumbLength() const {
  51   return thumb_length_;
  52 }
  53
  54 gfx::Rect FakeScrollbar::TrackRect() const {
  55   return track_rect_;
  56 }
  57
  58 void FakeScrollbar::PaintPart(SkCanvas* canvas,
  59                              ScrollbarPart part,
  60                              const gfx::Rect& content_rect) {
  61   if (!paint_)
  62     return;
  63
  64   // Fill the scrollbar with a different color each time.
  65   fill_color_++;
  66   SkPaint paint;
  67   paint.setAntiAlias(false);
  68   paint.setColor(paint_fill_color());
  69   paint.setStyle(SkPaint::kFill_Style);
  70
  71   // Emulate the how the real scrollbar works by using scrollbar's rect for
  72   // TRACK and the given content_rect for the THUMB
  73   SkRect rect = part == TRACK ? RectToSkRect(TrackRect())
  74                               : RectToSkRect(content_rect);
  75   canvas->drawRect(rect, paint);
  76 }
  77
  78 }  // namespace cc