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/gfx/shadow_value.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <algorithm> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 97d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles)#include "base/strings/stringprintf.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/insets.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/point_conversions.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace gfx { 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ShadowValue::ShadowValue() 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : blur_(0), 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) color_(0) { 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ShadowValue::ShadowValue(const gfx::Point& offset, 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double blur, 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SkColor color) 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : offset_(offset), 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) blur_(blur), 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) color_(color) { 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ShadowValue::~ShadowValue() { 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ShadowValue ShadowValue::Scale(float scale) const { 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Point scaled_offset = 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::ToFlooredPoint(gfx::ScalePoint(offset_, scale)); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ShadowValue(scaled_offset, blur_ * scale, color_); 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)std::string ShadowValue::ToString() const { 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return base::StringPrintf( 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "(%d,%d),%.2f,rgba(%d,%d,%d,%d)", 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) offset_.x(), offset_.y(), 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) blur_, 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SkColorGetR(color_), 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SkColorGetG(color_), 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SkColorGetB(color_), 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SkColorGetA(color_)); 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)Insets ShadowValue::GetMargin(const ShadowValues& shadows) { 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int left = 0; 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int top = 0; 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int right = 0; 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int bottom = 0; 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (size_t i = 0; i < shadows.size(); ++i) { 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const ShadowValue& shadow = shadows[i]; 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Add 0.5 to round up to the next integer. 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int blur = static_cast<int>(shadow.blur() / 2 + 0.5); 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) left = std::max(left, blur - shadow.x()); 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) top = std::max(top, blur - shadow.y()); 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) right = std::max(right, blur + shadow.x()); 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bottom = std::max(bottom, blur + shadow.y()); 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Insets(-top, -left, -bottom, -right); 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace gfx 71