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/view_model_utils.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <algorithm> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/view.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/view_model.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace views { 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Used in calculating ideal bounds. 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int primary_axis_coordinate(ViewModelUtils::Alignment alignment, 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int x, 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int y) { 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return alignment == ViewModelUtils::HORIZONTAL ? x : y; 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ViewModelUtils::SetViewBoundsToIdealBounds(const ViewModel& model) { 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (int i = 0; i < model.view_size(); ++i) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) model.view_at(i)->SetBoundsRect(model.ideal_bounds(i)); 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool ViewModelUtils::IsAtIdealBounds(const ViewModel& model) { 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (int i = 0; i < model.view_size(); ++i) { 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) View* view = model.view_at(i); 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (view->bounds() != model.ideal_bounds(i)) 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int ViewModelUtils::DetermineMoveIndex(const ViewModel& model, 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) View* view, 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Alignment alignment, 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int x, 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int y) { 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int value = primary_axis_coordinate(alignment, x, y); 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int current_index = model.GetIndexOfView(view); 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK_NE(-1, current_index); 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (int i = 0; i < current_index; ++i) { 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int mid_point = primary_axis_coordinate( 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) alignment, 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) model.ideal_bounds(i).x() + model.ideal_bounds(i).width() / 2, 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) model.ideal_bounds(i).y() + model.ideal_bounds(i).height() / 2); 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (value < mid_point) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return i; 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (current_index + 1 == model.view_size()) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return current_index; 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // For indices after the current index ignore the bounds of the view being 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // dragged. This keeps the view from bouncing around as moved. 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int delta = primary_axis_coordinate( 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) alignment, 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) model.ideal_bounds(current_index + 1).x() - 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) model.ideal_bounds(current_index).x(), 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) model.ideal_bounds(current_index + 1).y() - 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) model.ideal_bounds(current_index).y()); 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (int i = current_index + 1; i < model.view_size(); ++i) { 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const gfx::Rect& bounds(model.ideal_bounds(i)); 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int mid_point = primary_axis_coordinate( 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) alignment, 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bounds.x() + bounds.width() / 2 - delta, 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bounds.y() + bounds.height() / 2 - delta); 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (value < mid_point) 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return i - 1; 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return model.view_size() - 1; 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace views 83