1// Copyright (c) 2011 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "chrome/browser/ui/views/download/download_shelf_view.h" 6 7#include <algorithm> 8 9#include "base/logging.h" 10#include "base/utf_string_conversions.h" 11#include "chrome/browser/download/download_item.h" 12#include "chrome/browser/download/download_item_model.h" 13#include "chrome/browser/download/download_manager.h" 14#include "chrome/browser/themes/theme_service.h" 15#include "chrome/browser/ui/browser.h" 16#include "chrome/browser/ui/view_ids.h" 17#include "chrome/browser/ui/views/download/download_item_view.h" 18#include "chrome/browser/ui/views/frame/browser_view.h" 19#include "content/browser/tab_contents/navigation_entry.h" 20#include "grit/generated_resources.h" 21#include "grit/theme_resources.h" 22#include "ui/base/animation/slide_animation.h" 23#include "ui/base/l10n/l10n_util.h" 24#include "ui/base/resource/resource_bundle.h" 25#include "ui/gfx/canvas.h" 26#include "views/background.h" 27#include "views/controls/button/image_button.h" 28#include "views/controls/image_view.h" 29 30// Max number of download views we'll contain. Any time a view is added and 31// we already have this many download views, one is removed. 32static const size_t kMaxDownloadViews = 15; 33 34// Padding from left edge and first download view. 35static const int kLeftPadding = 2; 36 37// Padding from right edge and close button/show downloads link. 38static const int kRightPadding = 10; 39 40// Padding between the show all link and close button. 41static const int kCloseAndLinkPadding = 14; 42 43// Padding between the download views. 44static const int kDownloadPadding = 10; 45 46// Padding between the top/bottom and the content. 47static const int kTopBottomPadding = 2; 48 49// Padding between the icon and 'show all downloads' link 50static const int kDownloadsTitlePadding = 4; 51 52// Border color. 53static const SkColor kBorderColor = SkColorSetRGB(214, 214, 214); 54 55// New download item animation speed in milliseconds. 56static const int kNewItemAnimationDurationMs = 800; 57 58// Shelf show/hide speed. 59static const int kShelfAnimationDurationMs = 120; 60 61// Amount of time to delay if the mouse leaves the shelf by way of entering 62// another window. This is much larger than the normal delay as openning a 63// download is most likely going to trigger a new window to appear over the 64// button. Delay the time so that the user has a chance to quickly close the 65// other app and return to chrome with the download shelf still open. 66static const int kNotifyOnExitTimeMS = 5000; 67 68namespace { 69 70// Sets size->width() to view's preferred width + size->width().s 71// Sets size->height() to the max of the view's preferred height and 72// size->height(); 73void AdjustSize(views::View* view, gfx::Size* size) { 74 gfx::Size view_preferred = view->GetPreferredSize(); 75 size->Enlarge(view_preferred.width(), 0); 76 size->set_height(std::max(view_preferred.height(), size->height())); 77} 78 79int CenterPosition(int size, int target_size) { 80 return std::max((target_size - size) / 2, kTopBottomPadding); 81} 82 83} // namespace 84 85DownloadShelfView::DownloadShelfView(Browser* browser, BrowserView* parent) 86 : browser_(browser), 87 parent_(parent), 88 ALLOW_THIS_IN_INITIALIZER_LIST( 89 mouse_watcher_(this, this, gfx::Insets())) { 90 mouse_watcher_.set_notify_on_exit_time_ms(kNotifyOnExitTimeMS); 91 SetID(VIEW_ID_DOWNLOAD_SHELF); 92 parent->AddChildView(this); 93 Init(); 94} 95 96DownloadShelfView::~DownloadShelfView() { 97 parent_->RemoveChildView(this); 98} 99 100void DownloadShelfView::Init() { 101 ResourceBundle &rb = ResourceBundle::GetSharedInstance(); 102 arrow_image_ = new views::ImageView(); 103 arrow_image_->SetImage(rb.GetBitmapNamed(IDR_DOWNLOADS_FAVICON)); 104 AddChildView(arrow_image_); 105 106 show_all_view_ = new views::Link( 107 UTF16ToWide(l10n_util::GetStringUTF16(IDS_SHOW_ALL_DOWNLOADS))); 108 show_all_view_->SetController(this); 109 AddChildView(show_all_view_); 110 111 close_button_ = new views::ImageButton(this); 112 close_button_->SetImage(views::CustomButton::BS_NORMAL, 113 rb.GetBitmapNamed(IDR_CLOSE_BAR)); 114 close_button_->SetImage(views::CustomButton::BS_HOT, 115 rb.GetBitmapNamed(IDR_CLOSE_BAR_H)); 116 close_button_->SetImage(views::CustomButton::BS_PUSHED, 117 rb.GetBitmapNamed(IDR_CLOSE_BAR_P)); 118 close_button_->SetAccessibleName( 119 l10n_util::GetStringUTF16(IDS_ACCNAME_CLOSE)); 120 UpdateButtonColors(); 121 AddChildView(close_button_); 122 123 new_item_animation_.reset(new ui::SlideAnimation(this)); 124 new_item_animation_->SetSlideDuration(kNewItemAnimationDurationMs); 125 126 shelf_animation_.reset(new ui::SlideAnimation(this)); 127 shelf_animation_->SetSlideDuration(kShelfAnimationDurationMs); 128 Show(); 129} 130 131void DownloadShelfView::AddDownloadView(DownloadItemView* view) { 132 mouse_watcher_.Stop(); 133 134 Show(); 135 136 DCHECK(view); 137 download_views_.push_back(view); 138 AddChildView(view); 139 if (download_views_.size() > kMaxDownloadViews) 140 RemoveDownloadView(*download_views_.begin()); 141 142 new_item_animation_->Reset(); 143 new_item_animation_->Show(); 144} 145 146void DownloadShelfView::AddDownload(BaseDownloadItemModel* download_model) { 147 DownloadItemView* view = new DownloadItemView( 148 download_model->download(), this, download_model); 149 AddDownloadView(view); 150} 151 152void DownloadShelfView::MouseMovedOutOfView() { 153 Close(); 154} 155 156void DownloadShelfView::FocusWillChange(views::View* focused_before, 157 views::View* focused_now) { 158 SchedulePaintForDownloadItem(focused_before); 159 SchedulePaintForDownloadItem(focused_now); 160 AccessiblePaneView::FocusWillChange(focused_before, focused_now); 161} 162 163void DownloadShelfView::RemoveDownloadView(View* view) { 164 DCHECK(view); 165 std::vector<DownloadItemView*>::iterator i = 166 find(download_views_.begin(), download_views_.end(), view); 167 DCHECK(i != download_views_.end()); 168 download_views_.erase(i); 169 RemoveChildView(view); 170 delete view; 171 if (download_views_.empty()) 172 Close(); 173 else if (CanAutoClose()) 174 mouse_watcher_.Start(); 175 Layout(); 176 SchedulePaint(); 177} 178 179views::View* DownloadShelfView::GetDefaultFocusableChild() { 180 if (!download_views_.empty()) 181 return download_views_[0]; 182 else 183 return show_all_view_; 184} 185 186void DownloadShelfView::OnPaint(gfx::Canvas* canvas) { 187 OnPaintBackground(canvas); 188 OnPaintBorder(canvas); 189 190 // Draw the focus rect here, since it's outside the bounds of the item. 191 for (size_t i = 0; i < download_views_.size(); ++i) { 192 if (download_views_[i]->HasFocus()) { 193 gfx::Rect r = GetFocusRectBounds(download_views_[i]); 194 canvas->DrawFocusRect(r.x(), r.y(), r.width(), r.height() - 1); 195 break; 196 } 197 } 198} 199 200void DownloadShelfView::OnPaintBorder(gfx::Canvas* canvas) { 201 canvas->FillRectInt(kBorderColor, 0, 0, width(), 1); 202} 203 204void DownloadShelfView::OpenedDownload(DownloadItemView* view) { 205 if (CanAutoClose()) 206 mouse_watcher_.Start(); 207} 208 209gfx::Size DownloadShelfView::GetPreferredSize() { 210 gfx::Size prefsize(kRightPadding + kLeftPadding + kCloseAndLinkPadding, 0); 211 AdjustSize(close_button_, &prefsize); 212 AdjustSize(show_all_view_, &prefsize); 213 // Add one download view to the preferred size. 214 if (!download_views_.empty()) { 215 AdjustSize(*download_views_.begin(), &prefsize); 216 prefsize.Enlarge(kDownloadPadding, 0); 217 } 218 prefsize.Enlarge(0, kTopBottomPadding + kTopBottomPadding); 219 if (shelf_animation_->is_animating()) { 220 prefsize.set_height(static_cast<int>( 221 static_cast<double>(prefsize.height()) * 222 shelf_animation_->GetCurrentValue())); 223 } 224 return prefsize; 225} 226 227void DownloadShelfView::AnimationProgressed(const ui::Animation *animation) { 228 if (animation == new_item_animation_.get()) { 229 Layout(); 230 SchedulePaint(); 231 } else if (animation == shelf_animation_.get()) { 232 // Force a re-layout of the parent, which will call back into 233 // GetPreferredSize, where we will do our animation. In the case where the 234 // animation is hiding, we do a full resize - the fast resizing would 235 // otherwise leave blank white areas where the shelf was and where the 236 // user's eye is. Thankfully bottom-resizing is a lot faster than 237 // top-resizing. 238 parent_->ToolbarSizeChanged(shelf_animation_->IsShowing()); 239 } 240} 241 242void DownloadShelfView::AnimationEnded(const ui::Animation *animation) { 243 if (animation == shelf_animation_.get()) { 244 parent_->SetDownloadShelfVisible(shelf_animation_->IsShowing()); 245 if (!shelf_animation_->IsShowing()) 246 Closed(); 247 } 248} 249 250void DownloadShelfView::Layout() { 251 // Now that we know we have a parent, we can safely set our theme colors. 252 show_all_view_->SetColor( 253 GetThemeProvider()->GetColor(ThemeService::COLOR_BOOKMARK_TEXT)); 254 set_background(views::Background::CreateSolidBackground( 255 GetThemeProvider()->GetColor(ThemeService::COLOR_TOOLBAR))); 256 257 // Let our base class layout our child views 258 views::View::Layout(); 259 260 // If there is not enough room to show the first download item, show the 261 // "Show all downloads" link to the left to make it more visible that there is 262 // something to see. 263 bool show_link_only = !CanFitFirstDownloadItem(); 264 265 gfx::Size image_size = arrow_image_->GetPreferredSize(); 266 gfx::Size close_button_size = close_button_->GetPreferredSize(); 267 gfx::Size show_all_size = show_all_view_->GetPreferredSize(); 268 int max_download_x = 269 std::max<int>(0, width() - kRightPadding - close_button_size.width() - 270 kCloseAndLinkPadding - show_all_size.width() - 271 kDownloadsTitlePadding - image_size.width() - 272 kDownloadPadding); 273 int next_x = show_link_only ? kLeftPadding : 274 max_download_x + kDownloadPadding; 275 // Align vertically with show_all_view_. 276 arrow_image_->SetBounds(next_x, 277 CenterPosition(show_all_size.height(), height()), 278 image_size.width(), image_size.height()); 279 next_x += image_size.width() + kDownloadsTitlePadding; 280 show_all_view_->SetBounds(next_x, 281 CenterPosition(show_all_size.height(), height()), 282 show_all_size.width(), 283 show_all_size.height()); 284 next_x += show_all_size.width() + kCloseAndLinkPadding; 285 // If the window is maximized, we want to expand the hitbox of the close 286 // button to the right and bottom to make it easier to click. 287 bool is_maximized = browser_->window()->IsMaximized(); 288 int y = CenterPosition(close_button_size.height(), height()); 289 close_button_->SetBounds(next_x, y, 290 is_maximized ? width() - next_x : close_button_size.width(), 291 is_maximized ? height() - y : close_button_size.height()); 292 if (show_link_only) { 293 // Let's hide all the items. 294 std::vector<DownloadItemView*>::reverse_iterator ri; 295 for (ri = download_views_.rbegin(); ri != download_views_.rend(); ++ri) 296 (*ri)->SetVisible(false); 297 return; 298 } 299 300 next_x = kLeftPadding; 301 std::vector<DownloadItemView*>::reverse_iterator ri; 302 for (ri = download_views_.rbegin(); ri != download_views_.rend(); ++ri) { 303 gfx::Size view_size = (*ri)->GetPreferredSize(); 304 305 int x = next_x; 306 307 // Figure out width of item. 308 int item_width = view_size.width(); 309 if (new_item_animation_->is_animating() && ri == download_views_.rbegin()) { 310 item_width = static_cast<int>(static_cast<double>(view_size.width()) * 311 new_item_animation_->GetCurrentValue()); 312 } 313 314 next_x += item_width; 315 316 // Make sure our item can be contained within the shelf. 317 if (next_x < max_download_x) { 318 (*ri)->SetVisible(true); 319 (*ri)->SetBounds(x, CenterPosition(view_size.height(), height()), 320 item_width, view_size.height()); 321 } else { 322 (*ri)->SetVisible(false); 323 } 324 } 325} 326 327bool DownloadShelfView::CanFitFirstDownloadItem() { 328 if (download_views_.empty()) 329 return true; 330 331 gfx::Size image_size = arrow_image_->GetPreferredSize(); 332 gfx::Size close_button_size = close_button_->GetPreferredSize(); 333 gfx::Size show_all_size = show_all_view_->GetPreferredSize(); 334 335 // Let's compute the width available for download items, which is the width 336 // of the shelf minus the "Show all downloads" link, arrow and close button 337 // and the padding. 338 int available_width = width() - kRightPadding - close_button_size.width() - 339 kCloseAndLinkPadding - show_all_size.width() - kDownloadsTitlePadding - 340 image_size.width() - kDownloadPadding - kLeftPadding; 341 if (available_width <= 0) 342 return false; 343 344 gfx::Size item_size = (*download_views_.rbegin())->GetPreferredSize(); 345 return item_size.width() < available_width; 346} 347 348void DownloadShelfView::UpdateButtonColors() { 349 ResourceBundle& rb = ResourceBundle::GetSharedInstance(); 350 if (GetThemeProvider()) { 351 close_button_->SetBackground( 352 GetThemeProvider()->GetColor(ThemeService::COLOR_TAB_TEXT), 353 rb.GetBitmapNamed(IDR_CLOSE_BAR), 354 rb.GetBitmapNamed(IDR_CLOSE_BAR_MASK)); 355 } 356} 357 358void DownloadShelfView::OnThemeChanged() { 359 UpdateButtonColors(); 360} 361 362void DownloadShelfView::LinkActivated(views::Link* source, int event_flags) { 363 browser_->ShowDownloadsTab(); 364} 365 366void DownloadShelfView::ButtonPressed( 367 views::Button* button, const views::Event& event) { 368 Close(); 369} 370 371bool DownloadShelfView::IsShowing() const { 372 return shelf_animation_->IsShowing(); 373} 374 375bool DownloadShelfView::IsClosing() const { 376 return shelf_animation_->IsClosing(); 377} 378 379void DownloadShelfView::Show() { 380 shelf_animation_->Show(); 381} 382 383void DownloadShelfView::Close() { 384 parent_->SetDownloadShelfVisible(false); 385 shelf_animation_->Hide(); 386} 387 388Browser* DownloadShelfView::browser() const { 389 return browser_; 390} 391 392void DownloadShelfView::Closed() { 393 // When the close animation is complete, remove all completed downloads. 394 size_t i = 0; 395 while (i < download_views_.size()) { 396 DownloadItem* download = download_views_[i]->download(); 397 bool is_transfer_done = download->IsComplete() || 398 download->IsCancelled() || 399 download->IsInterrupted(); 400 if (is_transfer_done && 401 download->safety_state() != DownloadItem::DANGEROUS) { 402 RemoveDownloadView(download_views_[i]); 403 } else { 404 // Treat the item as opened when we close. This way if we get shown again 405 // the user need not open this item for the shelf to auto-close. 406 download->set_opened(true); 407 ++i; 408 } 409 } 410} 411 412bool DownloadShelfView::CanAutoClose() { 413 for (size_t i = 0; i < download_views_.size(); ++i) { 414 if (!download_views_[i]->download()->opened()) 415 return false; 416 } 417 return true; 418} 419 420void DownloadShelfView::SchedulePaintForDownloadItem(views::View* view) { 421 // Make sure it's not NULL. (Focus sometimes changes to or from NULL.) 422 if (!view) 423 return; 424 425 // Make sure it's one of our DownloadItemViews. 426 bool found = false; 427 for (size_t i = 0; i < download_views_.size(); ++i) { 428 if (download_views_[i] == view) 429 found = true; 430 } 431 if (!found) 432 return; 433 434 // Invalidate it 435 gfx::Rect invalid_rect = 436 GetFocusRectBounds(static_cast<DownloadItemView*>(view)); 437 SchedulePaintInRect(invalid_rect); 438} 439 440gfx::Rect DownloadShelfView::GetFocusRectBounds( 441 const DownloadItemView* download_item_view) { 442 gfx::Rect bounds = download_item_view->bounds(); 443 444#if defined(TOOLKIT_VIEWS) 445 bounds.set_height(bounds.height() - 1); 446 bounds.Offset(0, 3); 447#endif 448 449 return bounds; 450} 451