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) 5d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles)#include "ui/gfx/animation/slide_animation.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <math.h> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles)namespace gfx { 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// How many frames per second to target. 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static const int kDefaultFrameRateHz = 60; 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// How long animations should take by default. 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static const int kDefaultDurationMs = 120; 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)SlideAnimation::SlideAnimation(AnimationDelegate* target) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : LinearAnimation(kDefaultFrameRateHz, target), 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) target_(target), 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) tween_type_(Tween::EASE_OUT), 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) showing_(false), 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) value_start_(0), 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) value_end_(0), 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) value_current_(0), 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) slide_duration_(kDefaultDurationMs) { 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)SlideAnimation::~SlideAnimation() { 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void SlideAnimation::Reset() { 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Reset(0); 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void SlideAnimation::Reset(double value) { 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Stop(); 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) showing_ = static_cast<bool>(value == 1); 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) value_current_ = value; 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void SlideAnimation::Show() { 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If we're already showing (or fully shown), we have nothing to do. 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (showing_) 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) showing_ = true; 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) value_start_ = value_current_; 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) value_end_ = 1.0; 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Make sure we actually have something to do. 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (slide_duration_ == 0) { 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AnimateToState(1.0); // Skip to the end of the animation. 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (value_current_ == value_end_) { 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This will also reset the currently-occurring animation. 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SetDuration(static_cast<int>(slide_duration_ * (1 - value_current_))); 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Start(); 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void SlideAnimation::Hide() { 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If we're already hiding (or hidden), we have nothing to do. 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!showing_) 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) showing_ = false; 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) value_start_ = value_current_; 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) value_end_ = 0.0; 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Make sure we actually have something to do. 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (slide_duration_ == 0) { 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AnimateToState(0.0); // Skip to the end of the animation. 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (value_current_ == value_end_) { 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This will also reset the currently-occurring animation. 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SetDuration(static_cast<int>(slide_duration_ * value_current_)); 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Start(); 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void SlideAnimation::SetSlideDuration(int duration) { 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) slide_duration_ = duration; 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)double SlideAnimation::GetCurrentValue() const { 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return value_current_; 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void SlideAnimation::AnimateToState(double state) { 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (state > 1.0) 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) state = 1.0; 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) state = Tween::CalculateValue(tween_type_, state); 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) value_current_ = value_start_ + (value_end_ - value_start_) * state; 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Implement snapping. 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (tween_type_ == Tween::EASE_OUT_SNAP && 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fabs(value_current_ - value_end_) <= 0.06) 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) value_current_ = value_end_; 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Correct for any overshoot (while state may be capped at 1.0, let's not 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // take any rounding error chances. 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if ((value_end_ >= value_start_ && value_current_ > value_end_) || 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (value_end_ < value_start_ && value_current_ < value_end_)) { 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) value_current_ = value_end_; 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 114d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles)} // namespace gfx 115