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" 11ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch#include "base/message_loop/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 "ui/base/l10n/l10n_util.h" 16d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles)#include "ui/events/event.h" 17d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles)#include "ui/events/keycodes/keyboard_codes.h" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/canvas.h" 195d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "ui/gfx/geometry/safe_integer_conversions.h" 201320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "ui/strings/grit/ui_strings.h" 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/controls/menu/menu_item_view.h" 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/controls/menu/menu_runner.h" 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/controls/scroll_view.h" 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/controls/scrollbar/base_scroll_bar_thumb.h" 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/widget/widget.h" 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_LINUX) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/screen.h" 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#undef min 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#undef max 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace views { 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, public: 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)BaseScrollBar::BaseScrollBar(bool horizontal, BaseScrollBarThumb* thumb) 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : ScrollBar(horizontal), 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_(thumb), 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_size_(0), 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_(0), 44868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) viewport_size_(0), 452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) thumb_track_state_(CustomButton::STATE_NORMAL), 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) last_scroll_amount_(SCROLL_NONE), 47c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) repeater_(base::Bind(&BaseScrollBar::TrackClicked, 48c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::Unretained(this))), 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) context_menu_mouse_position_(0) { 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AddChildView(thumb_); 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) set_context_menu_controller(this); 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_->set_context_menu_controller(this); 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ScrollByAmount(ScrollAmount amount) { 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int offset = contents_scroll_offset_; 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (amount) { 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_START: 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = GetMinPosition(); 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_END: 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = GetMaxPosition(); 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_PREV_LINE: 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset -= GetScrollIncrement(false, false); 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = std::max(GetMinPosition(), offset); 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_NEXT_LINE: 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset += GetScrollIncrement(false, true); 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = std::min(GetMaxPosition(), offset); 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_PREV_PAGE: 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset -= GetScrollIncrement(true, false); 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = std::max(GetMinPosition(), offset); 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_NEXT_PAGE: 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset += GetScrollIncrement(true, true); 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = std::min(GetMaxPosition(), offset); 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = offset; 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollContentsToOffset(); 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)BaseScrollBar::~BaseScrollBar() { 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ScrollToThumbPosition(int thumb_position, 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool scroll_to_middle) { 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CalculateContentsOffset(thumb_position, scroll_to_middle); 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (contents_scroll_offset_ < GetMinPosition()) { 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = GetMinPosition(); 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (contents_scroll_offset_ > GetMaxPosition()) { 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = GetMaxPosition(); 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollContentsToOffset(); 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SchedulePaint(); 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)bool BaseScrollBar::ScrollByContentsOffset(int contents_offset) { 1052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int old_offset = contents_scroll_offset_; 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ -= contents_offset; 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (contents_scroll_offset_ < GetMinPosition()) { 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = GetMinPosition(); 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (contents_scroll_offset_ > GetMaxPosition()) { 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = GetMaxPosition(); 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (old_offset == contents_scroll_offset_) 1132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return false; 1142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollContentsToOffset(); 1162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return true; 1172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void BaseScrollBar::OnThumbStateChanged(CustomButton::ButtonState old_state, 1202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CustomButton::ButtonState new_state) { 1212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (old_state == CustomButton::STATE_PRESSED && 1222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) new_state == CustomButton::STATE_NORMAL && 1232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) GetThumbTrackState() == CustomButton::STATE_HOVERED) { 1242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SetThumbTrackState(CustomButton::STATE_NORMAL); 1252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, View implementation: 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool BaseScrollBar::OnMousePressed(const ui::MouseEvent& event) { 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event.IsOnlyLeftMouseButton()) 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ProcessPressEvent(event); 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::OnMouseReleased(const ui::MouseEvent& event) { 1382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SetState(HitTestPoint(event.location()) ? 1392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CustomButton::STATE_HOVERED : CustomButton::STATE_NORMAL); 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::OnMouseCaptureLost() { 1432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SetState(CustomButton::STATE_NORMAL); 1442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void BaseScrollBar::OnMouseEntered(const ui::MouseEvent& event) { 1472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SetThumbTrackState(CustomButton::STATE_HOVERED); 1482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void BaseScrollBar::OnMouseExited(const ui::MouseEvent& event) { 1512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (GetThumbTrackState() == CustomButton::STATE_HOVERED) 1522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SetState(CustomButton::STATE_NORMAL); 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool BaseScrollBar::OnKeyPressed(const ui::KeyEvent& event) { 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollAmount amount = SCROLL_NONE; 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (event.key_code()) { 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_UP: 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!IsHorizontal()) 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_PREV_LINE; 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_DOWN: 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!IsHorizontal()) 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_NEXT_LINE; 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_LEFT: 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (IsHorizontal()) 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_PREV_LINE; 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_RIGHT: 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (IsHorizontal()) 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_NEXT_LINE; 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_PRIOR: 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_PREV_PAGE; 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_NEXT: 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_NEXT_PAGE; 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_HOME: 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_START; 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_END: 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_END; 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (amount != SCROLL_NONE) { 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(amount); 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool BaseScrollBar::OnMouseWheel(const ui::MouseWheelEvent& event) { 1971320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci OnScroll(event.x_offset(), event.y_offset()); 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void BaseScrollBar::OnGestureEvent(ui::GestureEvent* event) { 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If a fling is in progress, then stop the fling for any incoming gesture 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // event (except for the GESTURE_END event that is generated at the end of the 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // fling). 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (scroll_animator_.get() && scroll_animator_->is_scrolling() && 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (event->type() != ui::ET_GESTURE_END || 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) event->details().touch_points() > 1)) { 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scroll_animator_->Stop(); 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_GESTURE_TAP_DOWN) { 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ProcessPressEvent(*event); 2132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) event->SetHandled(); 2142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return; 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_GESTURE_LONG_PRESS) { 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // For a long-press, the repeater started in tap-down should continue. So 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // return early. 2202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return; 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SetState(CustomButton::STATE_NORMAL); 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_GESTURE_TAP) { 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TAP_DOWN would have already scrolled some amount. So scrolling again on 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TAP is not necessary. 2282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) event->SetHandled(); 2292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return; 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_GESTURE_SCROLL_BEGIN || 2332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) event->type() == ui::ET_GESTURE_SCROLL_END) { 2342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) event->SetHandled(); 2352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return; 2362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_GESTURE_SCROLL_UPDATE) { 2395d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) float scroll_amount_f; 2405d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) int scroll_amount; 2415d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (IsHorizontal()) { 2425d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) scroll_amount_f = event->details().scroll_x() - roundoff_error_.x(); 2435d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) scroll_amount = gfx::ToRoundedInt(scroll_amount_f); 2445d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) roundoff_error_.set_x(scroll_amount - scroll_amount_f); 2455d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } else { 2465d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) scroll_amount_f = event->details().scroll_y() - roundoff_error_.y(); 2475d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) scroll_amount = gfx::ToRoundedInt(scroll_amount_f); 2485d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) roundoff_error_.set_y(scroll_amount - scroll_amount_f); 2492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 2505d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (ScrollByContentsOffset(scroll_amount)) 2515d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) event->SetHandled(); 2522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return; 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_SCROLL_FLING_START) { 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!scroll_animator_.get()) 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scroll_animator_.reset(new ScrollAnimator(this)); 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scroll_animator_->Start( 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IsHorizontal() ? event->details().velocity_x() : 0.f, 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IsHorizontal() ? 0.f : event->details().velocity_y()); 2612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) event->SetHandled(); 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, ScrollDelegate implementation: 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)bool BaseScrollBar::OnScroll(float dx, float dy) { 2692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return IsHorizontal() ? ScrollByContentsOffset(dx) : 2702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ScrollByContentsOffset(dy); 2715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 2745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, ContextMenuController implementation: 2755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)enum ScrollBarContextMenuCommands { 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollHere = 1, 2785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollStart, 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollEnd, 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollPageUp, 2815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollPageDown, 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollPrev, 2835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollNext 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2867d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles)void BaseScrollBar::ShowContextMenuForView(View* source, 2877d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) const gfx::Point& p, 2887d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) ui::MenuSourceType source_type) { 2895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Widget* widget = GetWidget(); 2905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Rect widget_bounds = widget->GetWindowBoundsInScreen(); 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Point temp_pt(p.x() - widget_bounds.x(), p.y() - widget_bounds.y()); 2925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) View::ConvertPointFromWidget(this, &temp_pt); 2935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) context_menu_mouse_position_ = IsHorizontal() ? temp_pt.x() : temp_pt.y(); 2945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) views::MenuItemView* menu = new views::MenuItemView(this); 2965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // MenuRunner takes ownership of |menu|. 297116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch menu_runner_.reset(new MenuRunner( 298116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch menu, MenuRunner::HAS_MNEMONICS | views::MenuRunner::CONTEXT_MENU)); 2995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollHere); 3005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendSeparator(); 3015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollStart); 3025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollEnd); 3035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendSeparator(); 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollPageUp); 3055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollPageDown); 3065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendSeparator(); 3075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollPrev); 3085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollNext); 309116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch if (menu_runner_->RunMenuAt(GetWidget(), 310116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch NULL, 311116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch gfx::Rect(p, gfx::Size()), 312116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch MENU_ANCHOR_TOPLEFT, 313116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch source_type) == MenuRunner::MENU_DELETED) { 3145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 3155c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, Menu::Delegate implementation: 3205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3215d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)base::string16 BaseScrollBar::GetLabel(int id) const { 3225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int ids_value = 0; 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (id) { 3245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollHere: 3255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IDS_APP_SCROLLBAR_CXMENU_SCROLLHERE; 3265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollStart: 3285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IsHorizontal() ? IDS_APP_SCROLLBAR_CXMENU_SCROLLLEFTEDGE 3295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : IDS_APP_SCROLLBAR_CXMENU_SCROLLHOME; 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollEnd: 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IsHorizontal() ? IDS_APP_SCROLLBAR_CXMENU_SCROLLRIGHTEDGE 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : IDS_APP_SCROLLBAR_CXMENU_SCROLLEND; 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageUp: 3365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IDS_APP_SCROLLBAR_CXMENU_SCROLLPAGEUP; 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageDown: 3395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IDS_APP_SCROLLBAR_CXMENU_SCROLLPAGEDOWN; 3405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPrev: 3425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IsHorizontal() ? IDS_APP_SCROLLBAR_CXMENU_SCROLLLEFT 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : IDS_APP_SCROLLBAR_CXMENU_SCROLLUP; 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollNext: 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IsHorizontal() ? IDS_APP_SCROLLBAR_CXMENU_SCROLLRIGHT 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : IDS_APP_SCROLLBAR_CXMENU_SCROLLDOWN; 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED() << "Invalid BaseScrollBar Context Menu command!"; 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3535d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return ids_value ? l10n_util::GetStringUTF16(ids_value) : base::string16(); 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool BaseScrollBar::IsCommandEnabled(int id) const { 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (id) { 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageUp: 3595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageDown: 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return !IsHorizontal(); 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ExecuteCommand(int id) { 3665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (id) { 3675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollHere: 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollToThumbPosition(context_menu_mouse_position_, true); 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollStart: 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_START); 3725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollEnd: 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_END); 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageUp: 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_PREV_PAGE); 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageDown: 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_NEXT_PAGE); 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPrev: 3835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_PREV_LINE); 3845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollNext: 3865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_NEXT_LINE); 3875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, ScrollBar implementation: 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 394a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)void BaseScrollBar::Update(int viewport_size, 395a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) int content_size, 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int contents_scroll_offset) { 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBar::Update(viewport_size, content_size, contents_scroll_offset); 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Make sure contents_size is always > 0 to avoid divide by zero errors in 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // calculations throughout this code. 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_size_ = std::max(1, content_size); 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 403868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) viewport_size_ = std::max(1, viewport_size); 404868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 4055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (content_size < 0) 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) content_size = 0; 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (contents_scroll_offset < 0) 4085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset = 0; 4095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (contents_scroll_offset > content_size) 4105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset = content_size; 411a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) contents_scroll_offset_ = contents_scroll_offset; 4125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Thumb Height and Thumb Pos. 4145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The height of the thumb is the ratio of the Viewport height to the 4155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // content size multiplied by the height of the thumb track. 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double ratio = static_cast<double>(viewport_size) / contents_size_; 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int thumb_size = static_cast<int>(ratio * GetTrackSize()); 4185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_->SetSize(thumb_size); 4195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int thumb_position = CalculateThumbPosition(contents_scroll_offset); 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_->SetPosition(thumb_position); 4225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int BaseScrollBar::GetPosition() const { 4255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return thumb_->GetPosition(); 4265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 4295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, protected: 4305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)BaseScrollBarThumb* BaseScrollBar::GetThumb() const { 4325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return thumb_; 4335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)CustomButton::ButtonState BaseScrollBar::GetThumbTrackState() const { 4365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return thumb_track_state_; 4375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ScrollToPosition(int position) { 4405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) controller()->ScrollToPosition(this, position); 4415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int BaseScrollBar::GetScrollIncrement(bool is_page, bool is_positive) { 4445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return controller()->GetScrollIncrement(this, is_page, is_positive); 4455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 4485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, private: 4495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 450868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)int BaseScrollBar::GetThumbSizeForTest() { 451868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) return thumb_->GetSize(); 452868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)} 453868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 4545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ProcessPressEvent(const ui::LocatedEvent& event) { 4552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SetThumbTrackState(CustomButton::STATE_PRESSED); 4565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Rect thumb_bounds = thumb_->bounds(); 4575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (IsHorizontal()) { 4582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (GetMirroredXInView(event.x()) < thumb_bounds.x()) { 4595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) last_scroll_amount_ = SCROLL_PREV_PAGE; 4602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } else if (GetMirroredXInView(event.x()) > thumb_bounds.right()) { 4615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) last_scroll_amount_ = SCROLL_NEXT_PAGE; 4625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 4645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event.y() < thumb_bounds.y()) { 4655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) last_scroll_amount_ = SCROLL_PREV_PAGE; 4665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (event.y() > thumb_bounds.bottom()) { 4675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) last_scroll_amount_ = SCROLL_NEXT_PAGE; 4685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) TrackClicked(); 4715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) repeater_.Start(); 4725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void BaseScrollBar::SetState(CustomButton::ButtonState state) { 4752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SetThumbTrackState(state); 4765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) repeater_.Stop(); 4775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::TrackClicked() { 4805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (last_scroll_amount_ != SCROLL_NONE) 4815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(last_scroll_amount_); 4825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ScrollContentsToOffset() { 4855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollToPosition(contents_scroll_offset_); 4865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_->SetPosition(CalculateThumbPosition(contents_scroll_offset_)); 4875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int BaseScrollBar::GetTrackSize() const { 4905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Rect track_bounds = GetTrackBounds(); 4915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return IsHorizontal() ? track_bounds.width() : track_bounds.height(); 4925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int BaseScrollBar::CalculateThumbPosition(int contents_scroll_offset) const { 495868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) // In some combination of viewport_size and contents_size_, the result of 496868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) // simple division can be rounded and there could be 1 pixel gap even when the 497868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) // contents scroll down to the bottom. See crbug.com/244671 498868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (contents_scroll_offset + viewport_size_ == contents_size_) { 499868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) int track_size = GetTrackSize(); 500868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) return track_size - (viewport_size_ * GetTrackSize() / contents_size_); 501868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) } 5025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (contents_scroll_offset * GetTrackSize()) / contents_size_; 5035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int BaseScrollBar::CalculateContentsOffset(int thumb_position, 506a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) bool scroll_to_middle) const { 5075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (scroll_to_middle) 5085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_position = thumb_position - (thumb_->GetSize() / 2); 5095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (thumb_position * contents_size_) / GetTrackSize(); 5105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::SetThumbTrackState(CustomButton::ButtonState state) { 5135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_track_state_ = state; 5145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SchedulePaint(); 5155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace views 518