base_scroll_bar.cc revision 5821806d5e7f356e8fa4b058a389a808ea183019
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" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/string16.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/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), 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_track_state_(CustomButton::BS_NORMAL), 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) last_scroll_amount_(SCROLL_NONE), 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ALLOW_THIS_IN_INITIALIZER_LIST(repeater_( 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Bind(&BaseScrollBar::TrackClicked, base::Unretained(this)))), 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) context_menu_mouse_position_(0) { 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AddChildView(thumb_); 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) set_context_menu_controller(this); 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_->set_context_menu_controller(this); 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ScrollByAmount(ScrollAmount amount) { 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int offset = contents_scroll_offset_; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (amount) { 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_START: 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = GetMinPosition(); 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_END: 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = GetMaxPosition(); 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_PREV_LINE: 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset -= GetScrollIncrement(false, false); 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = std::max(GetMinPosition(), offset); 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_NEXT_LINE: 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset += GetScrollIncrement(false, true); 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = std::min(GetMaxPosition(), offset); 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_PREV_PAGE: 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset -= GetScrollIncrement(true, false); 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = std::max(GetMinPosition(), offset); 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SCROLL_NEXT_PAGE: 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset += GetScrollIncrement(true, true); 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset = std::min(GetMaxPosition(), offset); 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = offset; 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollContentsToOffset(); 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)BaseScrollBar::~BaseScrollBar() { 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ScrollToThumbPosition(int thumb_position, 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool scroll_to_middle) { 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CalculateContentsOffset(thumb_position, scroll_to_middle); 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (contents_scroll_offset_ < GetMinPosition()) { 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = GetMinPosition(); 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (contents_scroll_offset_ > GetMaxPosition()) { 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = GetMaxPosition(); 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollContentsToOffset(); 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SchedulePaint(); 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ScrollByContentsOffset(int contents_offset) { 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ -= contents_offset; 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (contents_scroll_offset_ < GetMinPosition()) { 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = GetMinPosition(); 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (contents_scroll_offset_ > GetMaxPosition()) { 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset_ = GetMaxPosition(); 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollContentsToOffset(); 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, View implementation: 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool BaseScrollBar::OnMousePressed(const ui::MouseEvent& event) { 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event.IsOnlyLeftMouseButton()) 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ProcessPressEvent(event); 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::OnMouseReleased(const ui::MouseEvent& event) { 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OnMouseCaptureLost(); 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::OnMouseCaptureLost() { 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ResetState(); 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool BaseScrollBar::OnKeyPressed(const ui::KeyEvent& event) { 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollAmount amount = SCROLL_NONE; 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (event.key_code()) { 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_UP: 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!IsHorizontal()) 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_PREV_LINE; 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_DOWN: 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!IsHorizontal()) 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_NEXT_LINE; 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_LEFT: 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (IsHorizontal()) 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_PREV_LINE; 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_RIGHT: 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (IsHorizontal()) 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_NEXT_LINE; 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_PRIOR: 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_PREV_PAGE; 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_NEXT: 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_NEXT_PAGE; 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_HOME: 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_START; 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ui::VKEY_END: 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) amount = SCROLL_END; 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (amount != SCROLL_NONE) { 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(amount); 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool BaseScrollBar::OnMouseWheel(const ui::MouseWheelEvent& event) { 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByContentsOffset(event.offset()); 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ui::EventResult BaseScrollBar::OnGestureEvent(ui::GestureEvent* event) { 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If a fling is in progress, then stop the fling for any incoming gesture 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // event (except for the GESTURE_END event that is generated at the end of the 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // fling). 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (scroll_animator_.get() && scroll_animator_->is_scrolling() && 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (event->type() != ui::ET_GESTURE_END || 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) event->details().touch_points() > 1)) { 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scroll_animator_->Stop(); 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_GESTURE_TAP_DOWN) { 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ProcessPressEvent(*event); 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ui::ER_CONSUMED; 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_GESTURE_LONG_PRESS) { 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // For a long-press, the repeater started in tap-down should continue. So 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // return early. 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ui::ER_UNHANDLED; 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ResetState(); 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_GESTURE_TAP) { 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TAP_DOWN would have already scrolled some amount. So scrolling again on 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TAP is not necessary. 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ui::ER_CONSUMED; 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_GESTURE_SCROLL_BEGIN || 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) event->type() == ui::ET_GESTURE_SCROLL_END) 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ui::ER_CONSUMED; 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_GESTURE_SCROLL_UPDATE) { 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByContentsOffset(IsHorizontal() ? event->details().scroll_x() : 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) event->details().scroll_y()); 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ui::ER_CONSUMED; 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event->type() == ui::ET_SCROLL_FLING_START) { 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!scroll_animator_.get()) 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scroll_animator_.reset(new ScrollAnimator(this)); 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scroll_animator_->Start( 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IsHorizontal() ? event->details().velocity_x() : 0.f, 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IsHorizontal() ? 0.f : event->details().velocity_y()); 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ui::ER_CONSUMED; 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ui::ER_UNHANDLED; 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, ScrollDelegate implementation: 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::OnScroll(float dx, float dy) { 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (IsHorizontal()) 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByContentsOffset(dx); 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByContentsOffset(dy); 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, ContextMenuController implementation: 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)enum ScrollBarContextMenuCommands { 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollHere = 1, 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollStart, 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollEnd, 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollPageUp, 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollPageDown, 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollPrev, 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBarContextMenuCommand_ScrollNext 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ShowContextMenuForView(View* source, const gfx::Point& p) { 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Widget* widget = GetWidget(); 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Rect widget_bounds = widget->GetWindowBoundsInScreen(); 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Point temp_pt(p.x() - widget_bounds.x(), p.y() - widget_bounds.y()); 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) View::ConvertPointFromWidget(this, &temp_pt); 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) context_menu_mouse_position_ = IsHorizontal() ? temp_pt.x() : temp_pt.y(); 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) views::MenuItemView* menu = new views::MenuItemView(this); 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // MenuRunner takes ownership of |menu|. 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu_runner_.reset(new MenuRunner(menu)); 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollHere); 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendSeparator(); 2615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollStart); 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollEnd); 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendSeparator(); 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollPageUp); 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollPageDown); 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendSeparator(); 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollPrev); 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) menu->AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollNext); 2695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (menu_runner_->RunMenuAt(GetWidget(), NULL, gfx::Rect(p, gfx::Size()), 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MenuItemView::TOPLEFT, MenuRunner::HAS_MNEMONICS | 2715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) views::MenuRunner::CONTEXT_MENU) == 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MenuRunner::MENU_DELETED) 2735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 2745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, Menu::Delegate implementation: 2785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)string16 BaseScrollBar::GetLabel(int id) const { 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int ids_value = 0; 2815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (id) { 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollHere: 2835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IDS_APP_SCROLLBAR_CXMENU_SCROLLHERE; 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 2855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollStart: 2865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IsHorizontal() ? IDS_APP_SCROLLBAR_CXMENU_SCROLLLEFTEDGE 2875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : IDS_APP_SCROLLBAR_CXMENU_SCROLLHOME; 2885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 2895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollEnd: 2905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IsHorizontal() ? IDS_APP_SCROLLBAR_CXMENU_SCROLLRIGHTEDGE 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : IDS_APP_SCROLLBAR_CXMENU_SCROLLEND; 2925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 2935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageUp: 2945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IDS_APP_SCROLLBAR_CXMENU_SCROLLPAGEUP; 2955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 2965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageDown: 2975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IDS_APP_SCROLLBAR_CXMENU_SCROLLPAGEDOWN; 2985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 2995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPrev: 3005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IsHorizontal() ? IDS_APP_SCROLLBAR_CXMENU_SCROLLLEFT 3015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : IDS_APP_SCROLLBAR_CXMENU_SCROLLUP; 3025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollNext: 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ids_value = IsHorizontal() ? IDS_APP_SCROLLBAR_CXMENU_SCROLLRIGHT 3055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : IDS_APP_SCROLLBAR_CXMENU_SCROLLDOWN; 3065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 3085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED() << "Invalid BaseScrollBar Context Menu command!"; 3095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ids_value ? l10n_util::GetStringUTF16(ids_value) : string16(); 3125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool BaseScrollBar::IsCommandEnabled(int id) const { 3155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (id) { 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageUp: 3175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageDown: 3185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return !IsHorizontal(); 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 3215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ExecuteCommand(int id) { 3245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (id) { 3255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollHere: 3265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollToThumbPosition(context_menu_mouse_position_, true); 3275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollStart: 3295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_START); 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollEnd: 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_END); 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageUp: 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_PREV_PAGE); 3365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPageDown: 3385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_NEXT_PAGE); 3395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollPrev: 3415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_PREV_LINE); 3425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case ScrollBarContextMenuCommand_ScrollNext: 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(SCROLL_NEXT_LINE); 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, ScrollBar implementation: 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::Update(int viewport_size, int content_size, 3535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int contents_scroll_offset) { 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollBar::Update(viewport_size, content_size, contents_scroll_offset); 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Make sure contents_size is always > 0 to avoid divide by zero errors in 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // calculations throughout this code. 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_size_ = std::max(1, content_size); 3595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (content_size < 0) 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) content_size = 0; 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (contents_scroll_offset < 0) 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset = 0; 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (contents_scroll_offset > content_size) 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contents_scroll_offset = content_size; 3665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Thumb Height and Thumb Pos. 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The height of the thumb is the ratio of the Viewport height to the 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // content size multiplied by the height of the thumb track. 3705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double ratio = static_cast<double>(viewport_size) / contents_size_; 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int thumb_size = static_cast<int>(ratio * GetTrackSize()); 3725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_->SetSize(thumb_size); 3735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int thumb_position = CalculateThumbPosition(contents_scroll_offset); 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_->SetPosition(thumb_position); 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int BaseScrollBar::GetPosition() const { 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return thumb_->GetPosition(); 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 3835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, protected: 3845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)BaseScrollBarThumb* BaseScrollBar::GetThumb() const { 3865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return thumb_; 3875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)CustomButton::ButtonState BaseScrollBar::GetThumbTrackState() const { 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return thumb_track_state_; 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ScrollToPosition(int position) { 3945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) controller()->ScrollToPosition(this, position); 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int BaseScrollBar::GetScrollIncrement(bool is_page, bool is_positive) { 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return controller()->GetScrollIncrement(this, is_page, is_positive); 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/////////////////////////////////////////////////////////////////////////////// 4035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// BaseScrollBar, private: 4045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ProcessPressEvent(const ui::LocatedEvent& event) { 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SetThumbTrackState(CustomButton::BS_PUSHED); 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Rect thumb_bounds = thumb_->bounds(); 4085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (IsHorizontal()) { 4095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event.x() < thumb_bounds.x()) { 4105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) last_scroll_amount_ = SCROLL_PREV_PAGE; 4115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (event.x() > thumb_bounds.right()) { 4125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) last_scroll_amount_ = SCROLL_NEXT_PAGE; 4135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 4155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (event.y() < thumb_bounds.y()) { 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) last_scroll_amount_ = SCROLL_PREV_PAGE; 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (event.y() > thumb_bounds.bottom()) { 4185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) last_scroll_amount_ = SCROLL_NEXT_PAGE; 4195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) TrackClicked(); 4225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) repeater_.Start(); 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ResetState() { 4265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SetThumbTrackState(CustomButton::BS_NORMAL); 4275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) repeater_.Stop(); 4285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::TrackClicked() { 4315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (last_scroll_amount_ != SCROLL_NONE) 4325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollByAmount(last_scroll_amount_); 4335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::ScrollContentsToOffset() { 4365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ScrollToPosition(contents_scroll_offset_); 4375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_->SetPosition(CalculateThumbPosition(contents_scroll_offset_)); 4385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int BaseScrollBar::GetTrackSize() const { 4415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Rect track_bounds = GetTrackBounds(); 4425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return IsHorizontal() ? track_bounds.width() : track_bounds.height(); 4435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int BaseScrollBar::CalculateThumbPosition(int contents_scroll_offset) const { 4465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (contents_scroll_offset * GetTrackSize()) / contents_size_; 4475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int BaseScrollBar::CalculateContentsOffset(int thumb_position, 4505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool scroll_to_middle) const { 4515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (scroll_to_middle) 4525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_position = thumb_position - (thumb_->GetSize() / 2); 4535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (thumb_position * contents_size_) / GetTrackSize(); 4545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void BaseScrollBar::SetThumbTrackState(CustomButton::ButtonState state) { 4575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thumb_track_state_ = state; 4585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SchedulePaint(); 4595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace views 462