glow_hover_controller.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/glow_hover_controller.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "third_party/skia/include/effects/SkGradientShader.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/canvas.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/image/image_skia.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/image/image_skia_operations.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/view.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace views { 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Amount to scale the opacity. 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static const double kOpacityScale = 0.5; 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// How long the hover state takes. 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static const int kHoverDurationMs = 400; 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)GlowHoverController::GlowHoverController(views::View* view) 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : view_(view), 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ALLOW_THIS_IN_INITIALIZER_LIST(animation_(this)) { 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) animation_.set_delegate(this); 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) animation_.SetSlideDuration(kHoverDurationMs); 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)GlowHoverController::~GlowHoverController() { 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void GlowHoverController::SetAnimationContainer( 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ui::AnimationContainer* container) { 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) animation_.SetContainer(container); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void GlowHoverController::SetLocation(const gfx::Point& location) { 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) location_ = location; 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (ShouldDraw()) 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) view_->SchedulePaint(); 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void GlowHoverController::Show() { 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) animation_.SetTweenType(ui::Tween::EASE_OUT); 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) animation_.Show(); 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void GlowHoverController::Hide() { 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) animation_.SetTweenType(ui::Tween::EASE_IN); 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) animation_.Hide(); 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void GlowHoverController::HideImmediately() { 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (ShouldDraw()) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) view_->SchedulePaint(); 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) animation_.Reset(); 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)double GlowHoverController::GetAnimationValue() const { 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return animation_.GetCurrentValue(); 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool GlowHoverController::ShouldDraw() const { 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return animation_.IsShowing() || animation_.is_animating(); 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void GlowHoverController::Draw(gfx::Canvas* canvas, 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const gfx::ImageSkia& mask_image) const { 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!ShouldDraw()) 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Draw a radial gradient to hover_canvas. 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Canvas hover_canvas(gfx::Size(mask_image.width(), mask_image.height()), 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) canvas->scale_factor(), 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) false); 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Draw a radial gradient to hover_canvas. 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int radius = view_->width() / 3; 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SkPoint center_point; 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) center_point.iset(location_.x(), location_.y()); 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SkColor colors[2]; 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int hover_alpha = 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static_cast<int>(255 * kOpacityScale * animation_.GetCurrentValue()); 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) colors[0] = SkColorSetARGB(hover_alpha, 255, 255, 255); 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) colors[1] = SkColorSetARGB(0, 255, 255, 255); 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SkShader* shader = SkGradientShader::CreateRadial(center_point, 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SkIntToScalar(radius), colors, NULL, 2, SkShader::kClamp_TileMode); 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Shader can end up null when radius = 0. 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If so, this results in default full tab glow behavior. 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (shader) { 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SkPaint paint; 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) paint.setStyle(SkPaint::kFill_Style); 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) paint.setAntiAlias(true); 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) paint.setShader(shader); 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) shader->unref(); 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) hover_canvas.DrawRect(gfx::Rect(location_.x() - radius, 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) location_.y() - radius, 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) radius * 2, radius * 2), paint); 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::ImageSkia result = gfx::ImageSkiaOperations::CreateMaskedImage( 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::ImageSkia(hover_canvas.ExtractImageRep()), mask_image); 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) canvas->DrawImageInt(result, (view_->width() - mask_image.width()) / 2, 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (view_->height() - mask_image.height()) / 2); 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void GlowHoverController::AnimationEnded(const ui::Animation* animation) { 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) view_->SchedulePaint(); 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void GlowHoverController::AnimationProgressed(const ui::Animation* animation) { 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) view_->SchedulePaint(); 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace views 115