src/chrome/browser/ui/gtk/download/download_item_gtk.cc

   1 // Copyright (c) 2012 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/gtk/download/download_item_gtk.h"
   6
   7 #include "base/basictypes.h"
   8 #include "base/callback.h"
   9 #include "base/debug/trace_event.h"
  10 #include "base/metrics/histogram.h"
  11 #include "base/strings/string_util.h"
  12 #include "base/strings/utf_string_conversions.h"
  13 #include "base/time/time.h"
  14 #include "chrome/browser/browser_process.h"
  15 #include "chrome/browser/chrome_notification_types.h"
  16 #include "chrome/browser/download/chrome_download_manager_delegate.h"
  17 #include "chrome/browser/download/download_item_model.h"
  18 #include "chrome/browser/themes/theme_properties.h"
  19 #include "chrome/browser/ui/browser.h"
  20 #include "chrome/browser/ui/gtk/download/download_item_drag.h"
  21 #include "chrome/browser/ui/gtk/download/download_shelf_context_menu_gtk.h"
  22 #include "chrome/browser/ui/gtk/download/download_shelf_gtk.h"
  23 #include "chrome/browser/ui/gtk/gtk_theme_service.h"
  24 #include "chrome/browser/ui/gtk/gtk_util.h"
  25 #include "chrome/browser/ui/gtk/nine_box.h"
  26 #include "content/public/browser/download_manager.h"
  27 #include "content/public/browser/notification_source.h"
  28 #include "grit/generated_resources.h"
  29 #include "grit/theme_resources.h"
  30 #include "third_party/skia/include/core/SkBitmap.h"
  31 #include "ui/base/l10n/l10n_util.h"
  32 #include "ui/base/resource/resource_bundle.h"
  33 #include "ui/gfx/animation/slide_animation.h"
  34 #include "ui/gfx/canvas_skia_paint.h"
  35 #include "ui/gfx/color_utils.h"
  36 #include "ui/gfx/image/image.h"
  37 #include "ui/gfx/skia_utils_gtk.h"
  38 #include "ui/gfx/text_elider.h"
  39 #include "ui/gfx/text_utils.h"
  40
  41 namespace {
  42
  43 // The width of the |menu_button_| widget. It has to be at least as wide as the
  44 // bitmap that we use to draw it, i.e. 16, but can be more.
  45 const int kMenuButtonWidth = 16;
  46
  47 // Padding on left and right of items in dangerous download prompt.
  48 const int kDangerousElementPadding = 3;
  49
  50 // Minimum width of the dangerous download message at which we will start
  51 // wrapping.
  52 const int kDangerousTextWidth = 200;
  53
  54 // Amount of space we allot to showing the filename. If the filename is too wide
  55 // it will be elided.
  56 const int kTextWidth = 140;
  57
  58 // We only cap the size of the tooltip so we don't crash.
  59 const int kTooltipMaxWidth = 1000;
  60
  61 // The minimum width we will ever draw the download item. Used as a lower bound
  62 // during animation. This number comes from the width of the images used to
  63 // make the download item.
  64 const int kMinDownloadItemWidth = DownloadShelf::kSmallProgressIconSize;
  65
  66 // New download item animation speed in milliseconds.
  67 const int kNewItemAnimationDurationMs = 800;
  68
  69 // How long the 'download complete/interrupted' animation should last for.
  70 const int kCompleteAnimationDurationMs = 2500;
  71
  72 // Height of the body.
  73 const int kBodyHeight = DownloadShelf::kSmallProgressIconSize;
  74
  75 // Width of the body area of the download item.
  76 // TODO(estade): get rid of the fudge factor. http://crbug.com/18692
  77 const int kBodyWidth = kTextWidth + 50 + DownloadShelf::kSmallProgressIconSize;
  78
  79 // The font size of the text, and that size rounded down to the nearest integer
  80 // for the size of the arrow in GTK theme mode.
  81 const double kTextSize = 13.4;  // 13.4px == 10pt @ 96dpi
  82
  83 // Darken light-on-dark download status text by 20% before drawing, thus
  84 // creating a "muted" version of title text for both dark-on-light and
  85 // light-on-dark themes.
  86 static const double kDownloadItemLuminanceMod = 0.8;
  87
  88 // How long we keep the item disabled after the user clicked it to open the
  89 // downloaded item.
  90 static const int kDisabledOnOpenDurationMs = 3000;
  91
  92 }  // namespace
  93
  94 NineBox* DownloadItemGtk::body_nine_box_normal_ = NULL;
  95 NineBox* DownloadItemGtk::body_nine_box_prelight_ = NULL;
  96 NineBox* DownloadItemGtk::body_nine_box_active_ = NULL;
  97
  98 NineBox* DownloadItemGtk::menu_nine_box_normal_ = NULL;
  99 NineBox* DownloadItemGtk::menu_nine_box_prelight_ = NULL;
 100 NineBox* DownloadItemGtk::menu_nine_box_active_ = NULL;
 101
 102 NineBox* DownloadItemGtk::dangerous_nine_box_ = NULL;
 103
 104 using content::DownloadItem;
 105
 106 DownloadItemGtk::DownloadItemGtk(DownloadShelfGtk* parent_shelf,
 107                                  DownloadItem* download_item)
 108     : parent_shelf_(parent_shelf),
 109       arrow_(NULL),
 110       menu_showing_(false),
 111       theme_service_(
 112           GtkThemeService::GetFrom(parent_shelf->browser()->profile())),
 113       progress_angle_(DownloadShelf::kStartAngleDegrees),
 114       download_model_(download_item),
 115       dangerous_prompt_(NULL),
 116       dangerous_label_(NULL),
 117       complete_animation_(this),
 118       icon_small_(NULL),
 119       icon_large_(NULL),
 120       creation_time_(base::Time::Now()),
 121       download_complete_(false),
 122       disabled_while_opening_(false),
 123       weak_ptr_factory_(this) {
 124   LoadIcon();
 125
 126   body_.Own(gtk_button_new());
 127   gtk_widget_set_app_paintable(body_.get(), TRUE);
 128   UpdateTooltip();
 129
 130   g_signal_connect(body_.get(), "expose-event",
 131                    G_CALLBACK(OnExposeThunk), this);
 132   g_signal_connect(body_.get(), "clicked",
 133                    G_CALLBACK(OnClickThunk), this);
 134   g_signal_connect(body_.get(), "button-press-event",
 135                    G_CALLBACK(OnButtonPressThunk), this);
 136   gtk_widget_set_can_focus(body_.get(), FALSE);
 137   // Remove internal padding on the button.
 138   GtkRcStyle* no_padding_style = gtk_rc_style_new();
 139   no_padding_style->xthickness = 0;
 140   no_padding_style->ythickness = 0;
 141   gtk_widget_modify_style(body_.get(), no_padding_style);
 142   g_object_unref(no_padding_style);
 143
 144   name_label_ = gtk_label_new(NULL);
 145   // Left align and vertically center the labels.
 146   gtk_misc_set_alignment(GTK_MISC(name_label_), 0, 0.5);
 147   // Until we switch to vector graphics, force the font size.
 148   gtk_util::ForceFontSizePixels(name_label_, kTextSize);
 149
 150   UpdateNameLabel();
 151
 152   status_label_ = NULL;
 153
 154   // Stack the labels on top of one another.
 155   text_stack_ = gtk_vbox_new(FALSE, 0);
 156   g_signal_connect(text_stack_, "destroy",
 157                    G_CALLBACK(gtk_widget_destroyed), &text_stack_);
 158   gtk_box_pack_start(GTK_BOX(text_stack_), name_label_, TRUE, TRUE, 0);
 159
 160   // We use a GtkFixed because we don't want it to have its own window.
 161   // This choice of widget is not critically important though.
 162   progress_area_.Own(gtk_fixed_new());
 163   gtk_widget_set_size_request(progress_area_.get(),
 164       DownloadShelf::kSmallProgressIconSize,
 165       DownloadShelf::kSmallProgressIconSize);
 166   gtk_widget_set_app_paintable(progress_area_.get(), TRUE);
 167   g_signal_connect(progress_area_.get(), "expose-event",
 168                    G_CALLBACK(OnProgressAreaExposeThunk), this);
 169
 170   // Put the download progress icon on the left of the labels.
 171   GtkWidget* body_hbox = gtk_hbox_new(FALSE, 0);
 172   gtk_container_add(GTK_CONTAINER(body_.get()), body_hbox);
 173   gtk_box_pack_start(GTK_BOX(body_hbox), progress_area_.get(), FALSE, FALSE, 0);
 174   gtk_box_pack_start(GTK_BOX(body_hbox), text_stack_, TRUE, TRUE, 0);
 175
 176   menu_button_ = gtk_button_new();
 177   gtk_widget_set_app_paintable(menu_button_, TRUE);
 178   gtk_widget_set_can_focus(menu_button_, FALSE);
 179   g_signal_connect(menu_button_, "expose-event",
 180                    G_CALLBACK(OnExposeThunk), this);
 181   g_signal_connect(menu_button_, "button-press-event",
 182                    G_CALLBACK(OnMenuButtonPressEventThunk), this);
 183   g_object_set_data(G_OBJECT(menu_button_), "left-align-popup",
 184                     reinterpret_cast<void*>(true));
 185
 186   GtkWidget* shelf_hbox = parent_shelf->GetHBox();
 187   hbox_.Own(gtk_hbox_new(FALSE, 0));
 188   g_signal_connect(hbox_.get(), "expose-event",
 189                    G_CALLBACK(OnHboxExposeThunk), this);
 190   gtk_box_pack_start(GTK_BOX(hbox_.get()), body_.get(), FALSE, FALSE, 0);
 191   gtk_box_pack_start(GTK_BOX(hbox_.get()), menu_button_, FALSE, FALSE, 0);
 192   gtk_box_pack_start(GTK_BOX(shelf_hbox), hbox_.get(), FALSE, FALSE, 0);
 193   // Insert as the leftmost item.
 194   gtk_box_reorder_child(GTK_BOX(shelf_hbox), hbox_.get(), 0);
 195
 196   download()->AddObserver(this);
 197
 198   new_item_animation_.reset(new gfx::SlideAnimation(this));
 199   new_item_animation_->SetSlideDuration(kNewItemAnimationDurationMs);
 200   gtk_widget_show_all(hbox_.get());
 201
 202   if (download_model_.IsDangerous()) {
 203     // Hide the download item components for now.
 204     gtk_widget_set_no_show_all(body_.get(), TRUE);
 205     gtk_widget_set_no_show_all(menu_button_, TRUE);
 206     gtk_widget_hide(body_.get());
 207     gtk_widget_hide(menu_button_);
 208
 209     // Create an hbox to hold it all.
 210     dangerous_hbox_.Own(gtk_hbox_new(FALSE, kDangerousElementPadding));
 211
 212     // Add padding at the beginning and end. The hbox will add padding between
 213     // the empty labels and the other elements.
 214     GtkWidget* empty_label_a = gtk_label_new(NULL);
 215     GtkWidget* empty_label_b = gtk_label_new(NULL);
 216     gtk_box_pack_start(GTK_BOX(dangerous_hbox_.get()), empty_label_a,
 217                        FALSE, FALSE, 0);
 218     gtk_box_pack_end(GTK_BOX(dangerous_hbox_.get()), empty_label_b,
 219                      FALSE, FALSE, 0);
 220
 221     // Create the warning icon.
 222     dangerous_image_ = gtk_image_new();
 223     gtk_box_pack_start(GTK_BOX(dangerous_hbox_.get()), dangerous_image_,
 224                        FALSE, FALSE, 0);
 225
 226     dangerous_label_ = gtk_label_new(NULL);
 227     // We pass TRUE, TRUE so that the label will condense to less than its
 228     // request when the animation is going on.
 229     gtk_box_pack_start(GTK_BOX(dangerous_hbox_.get()), dangerous_label_,
 230                        TRUE, TRUE, 0);
 231
 232     // Create the nevermind button.
 233     GtkWidget* dangerous_decline = gtk_button_new_with_label(
 234         l10n_util::GetStringUTF8(IDS_DISCARD_DOWNLOAD).c_str());
 235     g_signal_connect(dangerous_decline, "clicked",
 236                      G_CALLBACK(OnDangerousDeclineThunk), this);
 237     gtk_util::CenterWidgetInHBox(dangerous_hbox_.get(), dangerous_decline,
 238                                  false, 0);
 239
 240     // Create the ok button, if this is the kind that can be bypassed.
 241     if (!download_model_.IsMalicious()) {
 242       GtkWidget* dangerous_accept = gtk_button_new_with_label(
 243           UTF16ToUTF8(download_model_.GetWarningConfirmButtonText()).c_str());
 244       g_signal_connect(dangerous_accept, "clicked",
 245                        G_CALLBACK(OnDangerousAcceptThunk), this);
 246       gtk_util::CenterWidgetInHBox(
 247           dangerous_hbox_.get(), dangerous_accept, false, 0);
 248     }
 249
 250     // Put it in an alignment so that padding will be added on the left and
 251     // right.
 252     dangerous_prompt_ = gtk_alignment_new(0.0, 0.0, 1.0, 1.0);
 253     gtk_alignment_set_padding(GTK_ALIGNMENT(dangerous_prompt_),
 254         0, 0, kDangerousElementPadding, kDangerousElementPadding);
 255     gtk_container_add(GTK_CONTAINER(dangerous_prompt_), dangerous_hbox_.get());
 256     gtk_box_pack_start(GTK_BOX(hbox_.get()), dangerous_prompt_, FALSE, FALSE,
 257                        0);
 258     gtk_widget_set_app_paintable(dangerous_prompt_, TRUE);
 259     gtk_widget_set_redraw_on_allocate(dangerous_prompt_, TRUE);
 260     g_signal_connect(dangerous_prompt_, "expose-event",
 261                      G_CALLBACK(OnDangerousPromptExposeThunk), this);
 262     gtk_widget_show_all(dangerous_prompt_);
 263   }
 264
 265   registrar_.Add(this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
 266                  content::Source<ThemeService>(theme_service_));
 267   theme_service_->InitThemesFor(this);
 268
 269   // Set the initial width of the widget to be animated.
 270   if (download_model_.IsDangerous()) {
 271     gtk_widget_set_size_request(dangerous_hbox_.get(),
 272                                 dangerous_hbox_start_width_, -1);
 273   } else {
 274     gtk_widget_set_size_request(body_.get(), kMinDownloadItemWidth, -1);
 275   }
 276
 277   new_item_animation_->Show();
 278
 279   complete_animation_.SetTweenType(gfx::Tween::LINEAR);
 280   complete_animation_.SetSlideDuration(kCompleteAnimationDurationMs);
 281
 282   // Update the status text and animation state.
 283   OnDownloadUpdated(download());
 284 }
 285
 286 DownloadItemGtk::~DownloadItemGtk() {
 287   // First close the menu and then destroy the GtkWidgets. Bug#97724
 288   if (menu_.get())
 289     menu_.reset();
 290
 291   StopDownloadProgress();
 292   download()->RemoveObserver(this);
 293
 294   // We may free some shelf space for showing more download items.
 295   parent_shelf_->MaybeShowMoreDownloadItems();
 296
 297   hbox_.Destroy();
 298   progress_area_.Destroy();
 299   body_.Destroy();
 300   dangerous_hbox_.Destroy();
 301
 302   // Make sure this widget has been destroyed and the pointer we hold to it
 303   // NULLed.
 304   DCHECK(!status_label_);
 305 }
 306
 307 void DownloadItemGtk::OnDownloadUpdated(DownloadItem* download_item) {
 308   DCHECK_EQ(download(), download_item);
 309
 310   if (dangerous_prompt_ != NULL && !download_model_.IsDangerous()) {
 311     // We have been approved.
 312     gtk_widget_set_no_show_all(body_.get(), FALSE);
 313     gtk_widget_set_no_show_all(menu_button_, FALSE);
 314     gtk_widget_show_all(hbox_.get());
 315     gtk_widget_destroy(dangerous_prompt_);
 316     gtk_widget_set_size_request(body_.get(), kBodyWidth, -1);
 317     dangerous_prompt_ = NULL;
 318
 319     // We may free some shelf space for showing more download items.
 320     parent_shelf_->MaybeShowMoreDownloadItems();
 321   }
 322
 323   if (download()->GetTargetFilePath() != icon_filepath_) {
 324     LoadIcon();
 325     UpdateTooltip();
 326   }
 327
 328   switch (download()->GetState()) {
 329     case DownloadItem::CANCELLED:
 330       StopDownloadProgress();
 331       gtk_widget_queue_draw(progress_area_.get());
 332       break;
 333     case DownloadItem::INTERRUPTED:
 334       StopDownloadProgress();
 335       UpdateTooltip();
 336
 337       complete_animation_.Show();
 338       break;
 339     case DownloadItem::COMPLETE:
 340       // ShouldRemoveFromShelfWhenComplete() may change after the download's
 341       // initial transition to COMPLETE, so we check it before the idemopotency
 342       // shield below.
 343       if (download_model_.ShouldRemoveFromShelfWhenComplete()) {
 344         parent_shelf_->RemoveDownloadItem(this);  // This will delete us!
 345         return;
 346       }
 347
 348       // We've already handled the completion specific actions; skip
 349       // doing the non-idempotent ones again.
 350       if (download_complete_)
 351         break;
 352
 353       StopDownloadProgress();
 354
 355       // Set up the widget as a drag source.
 356       DownloadItemDrag::SetSource(body_.get(), download(), icon_large_);
 357
 358       complete_animation_.Show();
 359       download_complete_ = true;
 360       break;
 361     case DownloadItem::IN_PROGRESS:
 362       download()->IsPaused() ?
 363           StopDownloadProgress() : StartDownloadProgress();
 364       break;
 365     default:
 366       NOTREACHED();
 367   }
 368
 369   status_text_ = UTF16ToUTF8(download_model_.GetStatusText());
 370   UpdateStatusLabel(status_text_);
 371 }
 372
 373 void DownloadItemGtk::OnDownloadDestroyed(DownloadItem* download_item) {
 374   DCHECK_EQ(download(), download_item);
 375   parent_shelf_->RemoveDownloadItem(this);
 376   // This will delete us!
 377 }
 378
 379 void DownloadItemGtk::AnimationProgressed(const gfx::Animation* animation) {
 380   if (animation == &complete_animation_) {
 381     gtk_widget_queue_draw(progress_area_.get());
 382   } else {
 383     DCHECK(animation == new_item_animation_.get());
 384     if (download_model_.IsDangerous()) {
 385       int progress = static_cast<int>((dangerous_hbox_full_width_ -
 386                                        dangerous_hbox_start_width_) *
 387                                       animation->GetCurrentValue());
 388       int showing_width = dangerous_hbox_start_width_ + progress;
 389       gtk_widget_set_size_request(dangerous_hbox_.get(), showing_width, -1);
 390     } else {
 391       int showing_width = std::max(kMinDownloadItemWidth,
 392           static_cast<int>(kBodyWidth * animation->GetCurrentValue()));
 393       gtk_widget_set_size_request(body_.get(), showing_width, -1);
 394     }
 395   }
 396 }
 397
 398 void DownloadItemGtk::Observe(int type,
 399                               const content::NotificationSource& source,
 400                               const content::NotificationDetails& details) {
 401   if (type == chrome::NOTIFICATION_BROWSER_THEME_CHANGED) {
 402     // Our GtkArrow is only visible in gtk mode. Otherwise, we let the custom
 403     // rendering code do whatever it wants.
 404     if (theme_service_->UsingNativeTheme()) {
 405       if (!arrow_) {
 406         arrow_ = gtk_arrow_new(GTK_ARROW_DOWN, GTK_SHADOW_NONE);
 407         gtk_widget_set_size_request(arrow_,
 408                                     static_cast<int>(kTextSize),
 409                                     static_cast<int>(kTextSize));
 410         gtk_container_add(GTK_CONTAINER(menu_button_), arrow_);
 411       }
 412
 413       gtk_widget_set_size_request(menu_button_, -1, -1);
 414       gtk_widget_show(arrow_);
 415     } else {
 416       InitNineBoxes();
 417
 418       gtk_widget_set_size_request(menu_button_, kMenuButtonWidth, 0);
 419
 420       if (arrow_)
 421         gtk_widget_hide(arrow_);
 422     }
 423
 424     UpdateNameLabel();
 425     UpdateStatusLabel(status_text_);
 426     UpdateDangerWarning();
 427   }
 428 }
 429
 430 // Download progress animation functions.
 431
 432 void DownloadItemGtk::UpdateDownloadProgress() {
 433   progress_angle_ =
 434       (progress_angle_ + DownloadShelf::kUnknownIncrementDegrees) %
 435       DownloadShelf::kMaxDegrees;
 436   gtk_widget_queue_draw(progress_area_.get());
 437 }
 438
 439 void DownloadItemGtk::StartDownloadProgress() {
 440   if (progress_timer_.IsRunning())
 441     return;
 442   progress_timer_.Start(FROM_HERE,
 443       base::TimeDelta::FromMilliseconds(DownloadShelf::kProgressRateMs), this,
 444       &DownloadItemGtk::UpdateDownloadProgress);
 445 }
 446
 447 void DownloadItemGtk::StopDownloadProgress() {
 448   progress_timer_.Stop();
 449 }
 450
 451 // Icon loading functions.
 452
 453 void DownloadItemGtk::OnLoadSmallIconComplete(gfx::Image* image) {
 454   icon_small_ = image;
 455   gtk_widget_queue_draw(progress_area_.get());
 456 }
 457
 458 void DownloadItemGtk::OnLoadLargeIconComplete(gfx::Image* image) {
 459   icon_large_ = image;
 460   if (download()->GetState() == DownloadItem::COMPLETE)
 461     DownloadItemDrag::SetSource(body_.get(), download(), icon_large_);
 462   // Else, the download will be made draggable once an OnDownloadUpdated()
 463   // notification is received with a download in COMPLETE state.
 464 }
 465
 466 void DownloadItemGtk::LoadIcon() {
 467   cancelable_task_tracker_.TryCancelAll();
 468   IconManager* im = g_browser_process->icon_manager();
 469   icon_filepath_ = download()->GetTargetFilePath();
 470   im->LoadIcon(icon_filepath_,
 471                IconLoader::SMALL,
 472                base::Bind(&DownloadItemGtk::OnLoadSmallIconComplete,
 473                           base::Unretained(this)),
 474                &cancelable_task_tracker_);
 475   im->LoadIcon(icon_filepath_,
 476                IconLoader::LARGE,
 477                base::Bind(&DownloadItemGtk::OnLoadLargeIconComplete,
 478                           base::Unretained(this)),
 479                &cancelable_task_tracker_);
 480 }
 481
 482 void DownloadItemGtk::UpdateTooltip() {
 483   const gfx::FontList& font_list =
 484       ui::ResourceBundle::GetSharedInstance().GetFontList(
 485           ui::ResourceBundle::BaseFont);
 486   string16 tooltip_text =
 487       download_model_.GetTooltipText(font_list, kTooltipMaxWidth);
 488   gtk_widget_set_tooltip_text(body_.get(), UTF16ToUTF8(tooltip_text).c_str());
 489 }
 490
 491 void DownloadItemGtk::UpdateNameLabel() {
 492   const gfx::FontList& font_list =
 493       ui::ResourceBundle::GetSharedInstance().GetFontList(
 494           ui::ResourceBundle::BaseFont);
 495   string16 filename;
 496   if (!disabled_while_opening_) {
 497     filename = gfx::ElideFilename(
 498         download()->GetFileNameToReportUser(), font_list, kTextWidth);
 499   } else {
 500     // First, Calculate the download status opening string width.
 501     string16 status_string =
 502         l10n_util::GetStringFUTF16(IDS_DOWNLOAD_STATUS_OPENING, string16());
 503     int status_string_width = gfx::GetStringWidth(status_string, font_list);
 504     // Then, elide the file name.
 505     string16 filename_string =
 506         gfx::ElideFilename(download()->GetFileNameToReportUser(), font_list,
 507                           kTextWidth - status_string_width);
 508     // Last, concat the whole string.
 509     filename = l10n_util::GetStringFUTF16(IDS_DOWNLOAD_STATUS_OPENING,
 510                                                  filename_string);
 511   }
 512
 513   GdkColor color = theme_service_->GetGdkColor(
 514       ThemeProperties::COLOR_BOOKMARK_TEXT);
 515   gtk_util::SetLabelColor(
 516       name_label_,
 517       theme_service_->UsingNativeTheme() ? NULL : &color);
 518   gtk_label_set_text(GTK_LABEL(name_label_),
 519                      UTF16ToUTF8(filename).c_str());
 520 }
 521
 522 void DownloadItemGtk::UpdateStatusLabel(const std::string& status_text) {
 523   if (!text_stack_) {
 524     // At least our container has been destroyed, which means that
 525     // this item is on the way to being destroyed; don't do anything.
 526     return;
 527   }
 528
 529   // If |status_text| is empty, only |name_label_| is displayed at the
 530   // vertical center of |text_stack_|. Otherwise, |name_label_| is displayed
 531   // on the upper half of |text_stack_| and |status_label_| is displayed
 532   // on the lower half of |text_stack_|.
 533   if (status_text.empty()) {
 534     if (status_label_)
 535       gtk_widget_destroy(status_label_);
 536     return;
 537   }
 538   if (!status_label_) {
 539     status_label_ = gtk_label_new(NULL);
 540     g_signal_connect(status_label_, "destroy",
 541                      G_CALLBACK(gtk_widget_destroyed), &status_label_);
 542     // Left align and vertically center the labels.
 543     gtk_misc_set_alignment(GTK_MISC(status_label_), 0, 0.5);
 544     // Until we switch to vector graphics, force the font size.
 545     gtk_util::ForceFontSizePixels(status_label_, kTextSize);
 546
 547     gtk_box_pack_start(GTK_BOX(text_stack_), status_label_, FALSE, FALSE, 0);
 548     gtk_widget_show_all(status_label_);
 549   }
 550
 551   GdkColor text_color;
 552   if (!theme_service_->UsingNativeTheme()) {
 553     SkColor color = theme_service_->GetColor(
 554         ThemeProperties::COLOR_BOOKMARK_TEXT);
 555     if (color_utils::RelativeLuminance(color) > 0.5) {
 556       color = SkColorSetRGB(
 557           static_cast<int>(kDownloadItemLuminanceMod *
 558                            SkColorGetR(color)),
 559           static_cast<int>(kDownloadItemLuminanceMod *
 560                            SkColorGetG(color)),
 561           static_cast<int>(kDownloadItemLuminanceMod *
 562                            SkColorGetB(color)));
 563     }
 564
 565     // Lighten the color by blending it with the download item body color. These
 566     // values are taken from IDR_DOWNLOAD_BUTTON.
 567     SkColor blend_color = SkColorSetRGB(241, 245, 250);
 568     text_color = gfx::SkColorToGdkColor(
 569         color_utils::AlphaBlend(blend_color, color, 77));
 570   }
 571
 572   gtk_util::SetLabelColor(
 573       status_label_,
 574       theme_service_->UsingNativeTheme() ? NULL : &text_color);
 575   gtk_label_set_text(GTK_LABEL(status_label_), status_text.c_str());
 576 }
 577
 578 void DownloadItemGtk::UpdateDangerWarning() {
 579   if (dangerous_prompt_) {
 580     UpdateDangerIcon();
 581
 582     // We create |dangerous_warning| as a wide string so we can more easily
 583     // calculate its length in characters.
 584     const gfx::FontList& font_list =
 585         ui::ResourceBundle::GetSharedInstance().GetFontList(
 586             ui::ResourceBundle::BaseFont);
 587     string16 dangerous_warning =
 588         download_model_.GetWarningText(font_list, kTextWidth);
 589     if (theme_service_->UsingNativeTheme()) {
 590       gtk_util::SetLabelColor(dangerous_label_, NULL);
 591     } else {
 592       GdkColor color = theme_service_->GetGdkColor(
 593           ThemeProperties::COLOR_BOOKMARK_TEXT);
 594       gtk_util::SetLabelColor(dangerous_label_, &color);
 595     }
 596
 597     gtk_label_set_text(GTK_LABEL(dangerous_label_),
 598                        UTF16ToUTF8(dangerous_warning).c_str());
 599
 600     // Until we switch to vector graphics, force the font size.
 601     gtk_util::ForceFontSizePixels(dangerous_label_, kTextSize);
 602
 603     gtk_widget_set_size_request(dangerous_label_, -1, -1);
 604     gtk_label_set_line_wrap(GTK_LABEL(dangerous_label_), FALSE);
 605
 606     GtkRequisition req;
 607     gtk_widget_size_request(dangerous_label_, &req);
 608
 609     gint label_width = req.width;
 610     if (req.width > kDangerousTextWidth) {
 611       // If the label width exceeds kDangerousTextWidth, we try line wrapping
 612       // starting at 60% and increasing in 10% intervals of the full width until
 613       // we have a label that fits within the height constraints of the shelf.
 614       gtk_label_set_line_wrap(GTK_LABEL(dangerous_label_), TRUE);
 615       int full_width = req.width;
 616       int tenths = 6;
 617       do {
 618         label_width = full_width * tenths / 10;
 619         gtk_widget_set_size_request(dangerous_label_, label_width, -1);
 620         gtk_widget_size_request(dangerous_label_, &req);
 621       } while (req.height > kBodyHeight && ++tenths <= 10);
 622       DCHECK(req.height <= kBodyHeight);
 623     }
 624
 625     // The width will depend on the text. We must do this each time we possibly
 626     // change the label above.
 627     gtk_widget_size_request(dangerous_hbox_.get(), &req);
 628     dangerous_hbox_full_width_ = req.width;
 629     dangerous_hbox_start_width_ = dangerous_hbox_full_width_ - label_width;
 630   }
 631 }
 632
 633 void DownloadItemGtk::UpdateDangerIcon() {
 634   if (theme_service_->UsingNativeTheme()) {
 635     const char* stock = download_model_.MightBeMalicious() ?
 636         GTK_STOCK_DIALOG_ERROR : GTK_STOCK_DIALOG_WARNING;
 637     gtk_image_set_from_stock(
 638         GTK_IMAGE(dangerous_image_), stock, GTK_ICON_SIZE_SMALL_TOOLBAR);
 639   } else {
 640     // Set the warning icon.
 641     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 642     int pixbuf_id =
 643         download_model_.MightBeMalicious() ? IDR_SAFEBROWSING_WARNING
 644                                            : IDR_WARNING;
 645     gtk_image_set_from_pixbuf(GTK_IMAGE(dangerous_image_),
 646                               rb.GetNativeImageNamed(pixbuf_id).ToGdkPixbuf());
 647   }
 648 }
 649
 650 // static
 651 void DownloadItemGtk::InitNineBoxes() {
 652   if (body_nine_box_normal_)
 653     return;
 654
 655   body_nine_box_normal_ = new NineBox(
 656       IDR_DOWNLOAD_BUTTON_LEFT_TOP,
 657       IDR_DOWNLOAD_BUTTON_CENTER_TOP,
 658       IDR_DOWNLOAD_BUTTON_RIGHT_TOP,
 659       IDR_DOWNLOAD_BUTTON_LEFT_MIDDLE,
 660       IDR_DOWNLOAD_BUTTON_CENTER_MIDDLE,
 661       IDR_DOWNLOAD_BUTTON_RIGHT_MIDDLE,
 662       IDR_DOWNLOAD_BUTTON_LEFT_BOTTOM,
 663       IDR_DOWNLOAD_BUTTON_CENTER_BOTTOM,
 664       IDR_DOWNLOAD_BUTTON_RIGHT_BOTTOM);
 665
 666   body_nine_box_prelight_ = new NineBox(
 667       IDR_DOWNLOAD_BUTTON_LEFT_TOP_H,
 668       IDR_DOWNLOAD_BUTTON_CENTER_TOP_H,
 669       IDR_DOWNLOAD_BUTTON_RIGHT_TOP_H,
 670       IDR_DOWNLOAD_BUTTON_LEFT_MIDDLE_H,
 671       IDR_DOWNLOAD_BUTTON_CENTER_MIDDLE_H,
 672       IDR_DOWNLOAD_BUTTON_RIGHT_MIDDLE_H,
 673       IDR_DOWNLOAD_BUTTON_LEFT_BOTTOM_H,
 674       IDR_DOWNLOAD_BUTTON_CENTER_BOTTOM_H,
 675       IDR_DOWNLOAD_BUTTON_RIGHT_BOTTOM_H);
 676
 677   body_nine_box_active_ = new NineBox(
 678       IDR_DOWNLOAD_BUTTON_LEFT_TOP_P,
 679       IDR_DOWNLOAD_BUTTON_CENTER_TOP_P,
 680       IDR_DOWNLOAD_BUTTON_RIGHT_TOP_P,
 681       IDR_DOWNLOAD_BUTTON_LEFT_MIDDLE_P,
 682       IDR_DOWNLOAD_BUTTON_CENTER_MIDDLE_P,
 683       IDR_DOWNLOAD_BUTTON_RIGHT_MIDDLE_P,
 684       IDR_DOWNLOAD_BUTTON_LEFT_BOTTOM_P,
 685       IDR_DOWNLOAD_BUTTON_CENTER_BOTTOM_P,
 686       IDR_DOWNLOAD_BUTTON_RIGHT_BOTTOM_P);
 687
 688   menu_nine_box_normal_ = new NineBox(
 689       IDR_DOWNLOAD_BUTTON_MENU_TOP, 0, 0,
 690       IDR_DOWNLOAD_BUTTON_MENU_MIDDLE, 0, 0,
 691       IDR_DOWNLOAD_BUTTON_MENU_BOTTOM, 0, 0);
 692
 693   menu_nine_box_prelight_ = new NineBox(
 694       IDR_DOWNLOAD_BUTTON_MENU_TOP_H, 0, 0,
 695       IDR_DOWNLOAD_BUTTON_MENU_MIDDLE_H, 0, 0,
 696       IDR_DOWNLOAD_BUTTON_MENU_BOTTOM_H, 0, 0);
 697
 698   menu_nine_box_active_ = new NineBox(
 699       IDR_DOWNLOAD_BUTTON_MENU_TOP_P, 0, 0,
 700       IDR_DOWNLOAD_BUTTON_MENU_MIDDLE_P, 0, 0,
 701       IDR_DOWNLOAD_BUTTON_MENU_BOTTOM_P, 0, 0);
 702
 703   dangerous_nine_box_ = new NineBox(
 704       IDR_DOWNLOAD_BUTTON_LEFT_TOP,
 705       IDR_DOWNLOAD_BUTTON_CENTER_TOP,
 706       IDR_DOWNLOAD_BUTTON_RIGHT_TOP_NO_DD,
 707       IDR_DOWNLOAD_BUTTON_LEFT_MIDDLE,
 708       IDR_DOWNLOAD_BUTTON_CENTER_MIDDLE,
 709       IDR_DOWNLOAD_BUTTON_RIGHT_MIDDLE_NO_DD,
 710       IDR_DOWNLOAD_BUTTON_LEFT_BOTTOM,
 711       IDR_DOWNLOAD_BUTTON_CENTER_BOTTOM,
 712       IDR_DOWNLOAD_BUTTON_RIGHT_BOTTOM_NO_DD);
 713 }
 714
 715 gboolean DownloadItemGtk::OnHboxExpose(GtkWidget* widget, GdkEventExpose* e) {
 716   TRACE_EVENT0("ui::gtk", "DownloadItemGtk::OnHboxExpose");
 717   if (theme_service_->UsingNativeTheme()) {
 718     GtkAllocation allocation;
 719     gtk_widget_get_allocation(widget, &allocation);
 720     int border_width = gtk_container_get_border_width(GTK_CONTAINER(widget));
 721     int x = allocation.x + border_width;
 722     int y = allocation.y + border_width;
 723     int width = allocation.width - border_width * 2;
 724     int height = allocation.height - border_width * 2;
 725
 726     if (download_model_.IsDangerous()) {
 727       // Draw a simple frame around the area when we're displaying the warning.
 728       gtk_paint_shadow(gtk_widget_get_style(widget),
 729                        gtk_widget_get_window(widget),
 730                        gtk_widget_get_state(widget),
 731                        static_cast<GtkShadowType>(GTK_SHADOW_OUT),
 732                        &e->area, widget, "frame",
 733                        x, y, width, height);
 734     } else {
 735       // Manually draw the GTK button border around the download item. We draw
 736       // the left part of the button (the file), a divider, and then the right
 737       // part of the button (the menu). We can't draw a button on top of each
 738       // other (*cough*Clearlooks*cough*) so instead, to draw the left part of
 739       // the button, we instruct GTK to draw the entire button...with a
 740       // doctored clip rectangle to the left part of the button sans
 741       // separator. We then repeat this for the right button.
 742       GtkStyle* style = gtk_widget_get_style(body_.get());
 743
 744       GtkAllocation left_clip;
 745       gtk_widget_get_allocation(body_.get(), &left_clip);
 746
 747       GtkAllocation right_clip;
 748       gtk_widget_get_allocation(menu_button_, &right_clip);
 749
 750       GtkShadowType body_shadow =
 751           GTK_BUTTON(body_.get())->depressed ? GTK_SHADOW_IN : GTK_SHADOW_OUT;
 752       gtk_paint_box(style,
 753                     gtk_widget_get_window(widget),
 754                     gtk_widget_get_state(body_.get()),
 755                     body_shadow,
 756                     &left_clip, widget, "button",
 757                     x, y, width, height);
 758
 759       GtkShadowType menu_shadow =
 760           GTK_BUTTON(menu_button_)->depressed ? GTK_SHADOW_IN : GTK_SHADOW_OUT;
 761       gtk_paint_box(style,
 762                     gtk_widget_get_window(widget),
 763                     gtk_widget_get_state(menu_button_),
 764                     menu_shadow,
 765                     &right_clip, widget, "button",
 766                     x, y, width, height);
 767
 768       // Doing the math to reverse engineer where we should be drawing our line
 769       // is hard and relies on copying GTK internals, so instead steal the
 770       // allocation of the gtk arrow which is close enough (and will error on
 771       // the conservative side).
 772       GtkAllocation arrow_allocation;
 773       gtk_widget_get_allocation(arrow_, &arrow_allocation);
 774       gtk_paint_vline(style,
 775                       gtk_widget_get_window(widget),
 776                       gtk_widget_get_state(widget),
 777                       &e->area, widget, "button",
 778                       arrow_allocation.y,
 779                       arrow_allocation.y + arrow_allocation.height,
 780                       left_clip.x + left_clip.width);
 781     }
 782   }
 783   return FALSE;
 784 }
 785
 786 gboolean DownloadItemGtk::OnExpose(GtkWidget* widget, GdkEventExpose* e) {
 787   TRACE_EVENT0("ui::gtk", "DownloadItemGtk::OnExpose");
 788   if (!theme_service_->UsingNativeTheme()) {
 789     bool is_body = widget == body_.get();
 790
 791     NineBox* nine_box = NULL;
 792     // If true, this widget is |body_|, otherwise it is |menu_button_|.
 793     if (gtk_widget_get_state(widget) == GTK_STATE_PRELIGHT)
 794       nine_box = is_body ? body_nine_box_prelight_ : menu_nine_box_prelight_;
 795     else if (gtk_widget_get_state(widget) == GTK_STATE_ACTIVE)
 796       nine_box = is_body ? body_nine_box_active_ : menu_nine_box_active_;
 797     else
 798       nine_box = is_body ? body_nine_box_normal_ : menu_nine_box_normal_;
 799
 800     // When the button is showing, we want to draw it as active. We have to do
 801     // this explicitly because the button's state will be NORMAL while the menu
 802     // has focus.
 803     if (!is_body && menu_showing_)
 804       nine_box = menu_nine_box_active_;
 805
 806     nine_box->RenderToWidget(widget);
 807   }
 808
 809   GtkWidget* child = gtk_bin_get_child(GTK_BIN(widget));
 810   if (child)
 811     gtk_container_propagate_expose(GTK_CONTAINER(widget), child, e);
 812
 813   return TRUE;
 814 }
 815
 816 void DownloadItemGtk::ReenableHbox() {
 817   gtk_widget_set_sensitive(hbox_.get(), true);
 818   disabled_while_opening_ = false;
 819   UpdateNameLabel();
 820 }
 821
 822 void DownloadItemGtk::OnDownloadOpened(DownloadItem* download) {
 823   disabled_while_opening_ = true;
 824   gtk_widget_set_sensitive(hbox_.get(), false);
 825   base::MessageLoop::current()->PostDelayedTask(
 826       FROM_HERE,
 827       base::Bind(&DownloadItemGtk::ReenableHbox,
 828                  weak_ptr_factory_.GetWeakPtr()),
 829       base::TimeDelta::FromMilliseconds(kDisabledOnOpenDurationMs));
 830   UpdateNameLabel();
 831   parent_shelf_->ItemOpened();
 832 }
 833
 834 void DownloadItemGtk::OnClick(GtkWidget* widget) {
 835   UMA_HISTOGRAM_LONG_TIMES("clickjacking.open_download",
 836                            base::Time::Now() - creation_time_);
 837   download()->OpenDownload();
 838 }
 839
 840 gboolean DownloadItemGtk::OnButtonPress(GtkWidget* button,
 841                                         GdkEventButton* event) {
 842   if (event->type == GDK_BUTTON_PRESS && event->button == 3) {
 843     ShowPopupMenu(NULL, event);
 844     return TRUE;
 845   }
 846   return FALSE;
 847 }
 848
 849 gboolean DownloadItemGtk::OnProgressAreaExpose(GtkWidget* widget,
 850                                                GdkEventExpose* event) {
 851   TRACE_EVENT0("ui::gtk", "DownloadItemGtk::OnProgressAreaExpose");
 852
 853   GtkAllocation allocation;
 854   gtk_widget_get_allocation(widget, &allocation);
 855
 856   // Create a transparent canvas.
 857   gfx::CanvasSkiaPaint canvas(event, false);
 858   DownloadItem::DownloadState state = download()->GetState();
 859   if (complete_animation_.is_animating()) {
 860     if (state == DownloadItem::INTERRUPTED) {
 861       DownloadShelf::PaintDownloadInterrupted(
 862           &canvas,
 863           allocation.x,
 864           allocation.y,
 865           complete_animation_.GetCurrentValue(),
 866           DownloadShelf::SMALL);
 867     } else {
 868       DownloadShelf::PaintDownloadComplete(
 869           &canvas,
 870           allocation.x,
 871           allocation.y,
 872           complete_animation_.GetCurrentValue(),
 873           DownloadShelf::SMALL);
 874     }
 875   } else if (state == DownloadItem::IN_PROGRESS) {
 876     DownloadShelf::PaintDownloadProgress(&canvas,
 877                                          allocation.x,
 878                                          allocation.y,
 879                                          progress_angle_,
 880                                          download_model_.PercentComplete(),
 881                                          DownloadShelf::SMALL);
 882   }
 883
 884   // |icon_small_| may be NULL if it is still loading. If the file is an
 885   // unrecognized type then we will get back a generic system icon. Hence
 886   // there is no need to use the chromium-specific default download item icon.
 887   if (icon_small_) {
 888     const int offset = DownloadShelf::kSmallProgressIconOffset;
 889     canvas.DrawImageInt(icon_small_->AsImageSkia(),
 890         allocation.x + offset, allocation.y + offset);
 891   }
 892
 893   return TRUE;
 894 }
 895
 896 gboolean DownloadItemGtk::OnMenuButtonPressEvent(GtkWidget* button,
 897                                                  GdkEventButton* event) {
 898   if (event->type == GDK_BUTTON_PRESS && event->button == 1) {
 899     ShowPopupMenu(button, event);
 900     menu_showing_ = true;
 901     gtk_widget_queue_draw(button);
 902     return TRUE;
 903   }
 904   return FALSE;
 905 }
 906
 907 void DownloadItemGtk::ShowPopupMenu(GtkWidget* button,
 908                                     GdkEventButton* event) {
 909   // Stop any completion animation.
 910   if (complete_animation_.is_animating())
 911     complete_animation_.End();
 912
 913   if (!menu_.get()) {
 914     menu_.reset(new DownloadShelfContextMenuGtk(this,
 915                                                 parent_shelf_->GetNavigator()));
 916   }
 917   menu_->Popup(button, event);
 918 }
 919
 920 gboolean DownloadItemGtk::OnDangerousPromptExpose(GtkWidget* widget,
 921                                                   GdkEventExpose* event) {
 922   TRACE_EVENT0("ui::gtk", "DownloadItemGtk::OnDangerousPromptExpose");
 923   if (!theme_service_->UsingNativeTheme()) {
 924     // The hbox renderer will take care of the border when in GTK mode.
 925     dangerous_nine_box_->RenderToWidget(widget);
 926   }
 927   return FALSE;  // Continue propagation.
 928 }
 929
 930 void DownloadItemGtk::OnDangerousAccept(GtkWidget* button) {
 931   UMA_HISTOGRAM_LONG_TIMES("clickjacking.save_download",
 932                            base::Time::Now() - creation_time_);
 933   download()->ValidateDangerousDownload();
 934 }
 935
 936 void DownloadItemGtk::OnDangerousDecline(GtkWidget* button) {
 937   UMA_HISTOGRAM_LONG_TIMES("clickjacking.discard_download",
 938                            base::Time::Now() - creation_time_);
 939   download()->Remove();
 940 }