base_scroll_bar.cc revision 5e3f23d412006dc4db4e659864679f29341e113f
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/controls/scrollbar/base_scroll_bar.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/bind.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/bind_helpers.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/callback.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/compiler_specific.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/message_loop.h" 125e3f23d412006dc4db4e659864679f29341e113fTorne (Richard Coles)#include "base/strings/string16.h" 13868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/strings/utf_string_conversions.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "build/build_config.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "grit/ui_strings.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/base/events/event.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/base/keycodes/keyboard_codes.h" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/base/l10n/l10n_util.h" 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/canvas.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/controls/menu/menu_item_view.h" 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/controls/menu/menu_runner.h" 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/controls/scroll_view.h" 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/controls/scrollbar/base_scroll_bar_thumb.h" 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/widget/widget.h" 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_LINUX) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/screen.h" 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#undef min 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#undef max 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace views { 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, public: 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)BaseScrollBar::BaseScrollBar(bool horizontal, BaseScrollBarThumb* thumb) 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : ScrollBar(horizontal), 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_(thumb), 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_size_(0), 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_(0), 43868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) viewport_size_(0), 442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) thumb_track_state_(CustomButton::STATE_NORMAL), 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) last_scroll_amount_(SCROLL_NONE), 46c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) repeater_(base::Bind(&BaseScrollBar::TrackClicked, 47c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::Unretained(this))), 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) context_menu_mouse_position_(0) { 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AddChildView(thumb_); 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) set_context_menu_controller(this); 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_->set_context_menu_controller(this); 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ScrollByAmount(ScrollAmount amount) { 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int offset = contents_scroll_offset_; 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (amount) { 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_START: 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = GetMinPosition(); 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_END: 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = GetMaxPosition(); 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_PREV_LINE: 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset -= GetScrollIncrement(false, false); 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = std::max(GetMinPosition(), offset); 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_NEXT_LINE: 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset += GetScrollIncrement(false, true); 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = std::min(GetMaxPosition(), offset); 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_PREV_PAGE: 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset -= GetScrollIncrement(true, false); 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = std::max(GetMinPosition(), offset); 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_NEXT_PAGE: 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset += GetScrollIncrement(true, true); 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = std::min(GetMaxPosition(), offset); 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = offset; 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollContentsToOffset(); 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)BaseScrollBar::~BaseScrollBar() { 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ScrollToThumbPosition(int thumb_position, 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool scroll_to_middle) { 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CalculateContentsOffset(thumb_position, scroll_to_middle); 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (contents_scroll_offset_ < GetMinPosition()) { 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = GetMinPosition(); 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (contents_scroll_offset_ > GetMaxPosition()) { 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = GetMaxPosition(); 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollContentsToOffset(); 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SchedulePaint(); 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)bool BaseScrollBar::ScrollByContentsOffset(int contents_offset) { 1042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int old_offset = contents_scroll_offset_; 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ -= contents_offset; 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (contents_scroll_offset_ < GetMinPosition()) { 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = GetMinPosition(); 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (contents_scroll_offset_ > GetMaxPosition()) { 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = GetMaxPosition(); 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (old_offset == contents_scroll_offset_) 1122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return false; 1132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollContentsToOffset(); 1152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return true; 1162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void BaseScrollBar::OnThumbStateChanged(CustomButton::ButtonState old_state, 1192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CustomButton::ButtonState new_state) { 1202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (old_state == CustomButton::STATE_PRESSED && 1212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) new_state == CustomButton::STATE_NORMAL && 1222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) GetThumbTrackState() == CustomButton::STATE_HOVERED) { 1232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SetThumbTrackState(CustomButton::STATE_NORMAL); 1242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, View implementation: 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool BaseScrollBar::OnMousePressed(const ui::MouseEvent& event) { 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event.IsOnlyLeftMouseButton()) 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ProcessPressEvent(event); 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::OnMouseReleased(const ui::MouseEvent& event) { 1372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SetState(HitTestPoint(event.location()) ? 1382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CustomButton::STATE_HOVERED : CustomButton::STATE_NORMAL); 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::OnMouseCaptureLost() { 1422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SetState(CustomButton::STATE_NORMAL); 1432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void BaseScrollBar::OnMouseEntered(const ui::MouseEvent& event) { 1462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SetThumbTrackState(CustomButton::STATE_HOVERED); 1472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void BaseScrollBar::OnMouseExited(const ui::MouseEvent& event) { 1502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (GetThumbTrackState() == CustomButton::STATE_HOVERED) 1512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SetState(CustomButton::STATE_NORMAL); 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool BaseScrollBar::OnKeyPressed(const ui::KeyEvent& event) { 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollAmount amount = SCROLL_NONE; 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (event.key_code()) { 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_UP: 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!IsHorizontal()) 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_PREV_LINE; 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_DOWN: 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!IsHorizontal()) 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_NEXT_LINE; 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_LEFT: 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (IsHorizontal()) 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_PREV_LINE; 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_RIGHT: 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (IsHorizontal()) 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_NEXT_LINE; 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_PRIOR: 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_PREV_PAGE; 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_NEXT: 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_NEXT_PAGE; 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_HOME: 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_START; 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_END: 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_END; 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (amount != SCROLL_NONE) { 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(amount); 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool BaseScrollBar::OnMouseWheel(const ui::MouseWheelEvent& event) { 196c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ScrollByContentsOffset(event.y_offset()); 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void BaseScrollBar::OnGestureEvent(ui::GestureEvent* event) { 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If a fling is in progress, then stop the fling for any incoming gesture 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // event (except for the GESTURE_END event that is generated at the end of the 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // fling). 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (scroll_animator_.get() && scroll_animator_->is_scrolling() && 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (event->type() != ui::ET_GESTURE_END || 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) event->details().touch_points() > 1)) { 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scroll_animator_->Stop(); 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_GESTURE_TAP_DOWN) { 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ProcessPressEvent(*event); 2122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) event->SetHandled(); 2132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return; 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_GESTURE_LONG_PRESS) { 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // For a long-press, the repeater started in tap-down should continue. So 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // return early. 2192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return; 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SetState(CustomButton::STATE_NORMAL); 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_GESTURE_TAP) { 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TAP_DOWN would have already scrolled some amount. So scrolling again on 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TAP is not necessary. 2272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) event->SetHandled(); 2282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return; 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_GESTURE_SCROLL_BEGIN || 2322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) event->type() == ui::ET_GESTURE_SCROLL_END) { 2332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) event->SetHandled(); 2342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return; 2352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_GESTURE_SCROLL_UPDATE) { 2382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (ScrollByContentsOffset(IsHorizontal() ? event->details().scroll_x() : 2392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) event->details().scroll_y())) { 2402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) event->SetHandled(); 2412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 2422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return; 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_SCROLL_FLING_START) { 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!scroll_animator_.get()) 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scroll_animator_.reset(new ScrollAnimator(this)); 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scroll_animator_->Start( 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IsHorizontal() ? event->details().velocity_x() : 0.f, 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IsHorizontal() ? 0.f : event->details().velocity_y()); 2512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) event->SetHandled(); 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, ScrollDelegate implementation: 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)bool BaseScrollBar::OnScroll(float dx, float dy) { 2592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return IsHorizontal() ? ScrollByContentsOffset(dx) : 2602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ScrollByContentsOffset(dy); 2615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, ContextMenuController implementation: 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)enum ScrollBarContextMenuCommands { 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollHere = 1, 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollStart, 2695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollEnd, 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollPageUp, 2715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollPageDown, 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollPrev, 2735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollNext 2745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ShowContextMenuForView(View* source, const gfx::Point& p) { 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Widget* widget = GetWidget(); 2785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Rect widget_bounds = widget->GetWindowBoundsInScreen(); 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Point temp_pt(p.x() - widget_bounds.x(), p.y() - widget_bounds.y()); 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) View::ConvertPointFromWidget(this, &temp_pt); 2815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) context_menu_mouse_position_ = IsHorizontal() ? temp_pt.x() : temp_pt.y(); 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) views::MenuItemView* menu = new views::MenuItemView(this); 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // MenuRunner takes ownership of |menu|. 2855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu_runner_.reset(new MenuRunner(menu)); 2865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollHere); 2875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendSeparator(); 2885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollStart); 2895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollEnd); 2905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendSeparator(); 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollPageUp); 2925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollPageDown); 2935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendSeparator(); 2945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollPrev); 2955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollNext); 2965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (menu_runner_->RunMenuAt(GetWidget(), NULL, gfx::Rect(p, gfx::Size()), 2975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MenuItemView::TOPLEFT, MenuRunner::HAS_MNEMONICS | 2985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) views::MenuRunner::CONTEXT_MENU) == 2995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MenuRunner::MENU_DELETED) 3005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 3015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, Menu::Delegate implementation: 3055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)string16 BaseScrollBar::GetLabel(int id) const { 3075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int ids_value = 0; 3085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (id) { 3095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollHere: 3105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IDS_APP_SCROLLBAR_CXMENU_SCROLLHERE; 3115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollStart: 3135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IsHorizontal() ? IDS_APP_SCROLLBAR_CXMENU_SCROLLLEFTEDGE 3145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : IDS_APP_SCROLLBAR_CXMENU_SCROLLHOME; 3155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollEnd: 3175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IsHorizontal() ? IDS_APP_SCROLLBAR_CXMENU_SCROLLRIGHTEDGE 3185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : IDS_APP_SCROLLBAR_CXMENU_SCROLLEND; 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageUp: 3215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IDS_APP_SCROLLBAR_CXMENU_SCROLLPAGEUP; 3225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageDown: 3245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IDS_APP_SCROLLBAR_CXMENU_SCROLLPAGEDOWN; 3255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPrev: 3275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IsHorizontal() ? IDS_APP_SCROLLBAR_CXMENU_SCROLLLEFT 3285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : IDS_APP_SCROLLBAR_CXMENU_SCROLLUP; 3295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollNext: 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IsHorizontal() ? IDS_APP_SCROLLBAR_CXMENU_SCROLLRIGHT 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : IDS_APP_SCROLLBAR_CXMENU_SCROLLDOWN; 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED() << "Invalid BaseScrollBar Context Menu command!"; 3365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ids_value ? l10n_util::GetStringUTF16(ids_value) : string16(); 3395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool BaseScrollBar::IsCommandEnabled(int id) const { 3425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (id) { 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageUp: 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageDown: 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return !IsHorizontal(); 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ExecuteCommand(int id) { 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (id) { 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollHere: 3535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollToThumbPosition(context_menu_mouse_position_, true); 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollStart: 3565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_START); 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollEnd: 3595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_END); 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageUp: 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_PREV_PAGE); 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageDown: 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_NEXT_PAGE); 3665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPrev: 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_PREV_LINE); 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollNext: 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_NEXT_LINE); 3725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, ScrollBar implementation: 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::Update(int viewport_size, int content_size, 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int contents_scroll_offset) { 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBar::Update(viewport_size, content_size, contents_scroll_offset); 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Make sure contents_size is always > 0 to avoid divide by zero errors in 3845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // calculations throughout this code. 3855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_size_ = std::max(1, content_size); 3865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 387868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) viewport_size_ = std::max(1, viewport_size); 388868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (content_size < 0) 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) content_size = 0; 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (contents_scroll_offset < 0) 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset = 0; 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (contents_scroll_offset > content_size) 3945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset = content_size; 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Thumb Height and Thumb Pos. 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The height of the thumb is the ratio of the Viewport height to the 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // content size multiplied by the height of the thumb track. 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double ratio = static_cast<double>(viewport_size) / contents_size_; 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int thumb_size = static_cast<int>(ratio * GetTrackSize()); 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_->SetSize(thumb_size); 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int thumb_position = CalculateThumbPosition(contents_scroll_offset); 4045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_->SetPosition(thumb_position); 4055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int BaseScrollBar::GetPosition() const { 4085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return thumb_->GetPosition(); 4095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 4125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, protected: 4135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)BaseScrollBarThumb* BaseScrollBar::GetThumb() const { 4155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return thumb_; 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)CustomButton::ButtonState BaseScrollBar::GetThumbTrackState() const { 4195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return thumb_track_state_; 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ScrollToPosition(int position) { 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) controller()->ScrollToPosition(this, position); 4245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int BaseScrollBar::GetScrollIncrement(bool is_page, bool is_positive) { 4275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return controller()->GetScrollIncrement(this, is_page, is_positive); 4285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 4315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, private: 4325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 433868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)int BaseScrollBar::GetThumbSizeForTest() { 434868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) return thumb_->GetSize(); 435868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)} 436868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 4375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ProcessPressEvent(const ui::LocatedEvent& event) { 4382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SetThumbTrackState(CustomButton::STATE_PRESSED); 4395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Rect thumb_bounds = thumb_->bounds(); 4405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (IsHorizontal()) { 4412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (GetMirroredXInView(event.x()) < thumb_bounds.x()) { 4425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) last_scroll_amount_ = SCROLL_PREV_PAGE; 4432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } else if (GetMirroredXInView(event.x()) > thumb_bounds.right()) { 4445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) last_scroll_amount_ = SCROLL_NEXT_PAGE; 4455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 4475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event.y() < thumb_bounds.y()) { 4485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) last_scroll_amount_ = SCROLL_PREV_PAGE; 4495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (event.y() > thumb_bounds.bottom()) { 4505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) last_scroll_amount_ = SCROLL_NEXT_PAGE; 4515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) TrackClicked(); 4545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) repeater_.Start(); 4555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void BaseScrollBar::SetState(CustomButton::ButtonState state) { 4582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SetThumbTrackState(state); 4595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) repeater_.Stop(); 4605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::TrackClicked() { 4635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (last_scroll_amount_ != SCROLL_NONE) 4645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(last_scroll_amount_); 4655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ScrollContentsToOffset() { 4685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollToPosition(contents_scroll_offset_); 4695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_->SetPosition(CalculateThumbPosition(contents_scroll_offset_)); 4705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int BaseScrollBar::GetTrackSize() const { 4735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Rect track_bounds = GetTrackBounds(); 4745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return IsHorizontal() ? track_bounds.width() : track_bounds.height(); 4755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int BaseScrollBar::CalculateThumbPosition(int contents_scroll_offset) const { 478868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) // In some combination of viewport_size and contents_size_, the result of 479868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) // simple division can be rounded and there could be 1 pixel gap even when the 480868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) // contents scroll down to the bottom. See crbug.com/244671 481868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (contents_scroll_offset + viewport_size_ == contents_size_) { 482868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) int track_size = GetTrackSize(); 483868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) return track_size - (viewport_size_ * GetTrackSize() / contents_size_); 484868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) } 4855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (contents_scroll_offset * GetTrackSize()) / contents_size_; 4865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int BaseScrollBar::CalculateContentsOffset(int thumb_position, 4895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool scroll_to_middle) const { 4905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (scroll_to_middle) 4915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_position = thumb_position - (thumb_->GetSize() / 2); 4925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (thumb_position * contents_size_) / GetTrackSize(); 4935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::SetThumbTrackState(CustomButton::ButtonState state) { 4965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_track_state_ = state; 4975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SchedulePaint(); 4985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace views 501