cc/layers/heads_up_display_layer_impl.cc

   1 // Copyright 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 "cc/layers/heads_up_display_layer_impl.h"
   6
   7 #include <algorithm>
   8 #include <vector>
   9
  10 #include "base/strings/stringprintf.h"
  11 #include "base/trace_event/trace_event.h"
  12 #include "base/trace_event/trace_event_argument.h"
  13 #include "cc/debug/debug_colors.h"
  14 #include "cc/debug/frame_rate_counter.h"
  15 #include "cc/debug/paint_time_counter.h"
  16 #include "cc/output/begin_frame_args.h"
  17 #include "cc/output/renderer.h"
  18 #include "cc/quads/texture_draw_quad.h"
  19 #include "cc/resources/memory_history.h"
  20 #include "cc/trees/layer_tree_host_impl.h"
  21 #include "cc/trees/layer_tree_impl.h"
  22 #include "skia/ext/platform_canvas.h"
  23 #include "third_party/skia/include/core/SkPaint.h"
  24 #include "third_party/skia/include/core/SkTypeface.h"
  25 #include "third_party/skia/include/effects/SkColorMatrixFilter.h"
  26 #include "ui/gfx/geometry/point.h"
  27 #include "ui/gfx/geometry/size.h"
  28 #include "ui/gfx/geometry/size_conversions.h"
  29 #include "ui/gfx/hud_font.h"
  30
  31 namespace cc {
  32
  33 static inline SkPaint CreatePaint() {
  34   SkPaint paint;
  35 #if (SK_R32_SHIFT || SK_B32_SHIFT != 16)
  36   // The SkCanvas is in RGBA but the shader is expecting BGRA, so we need to
  37   // swizzle our colors when drawing to the SkCanvas.
  38   SkColorMatrix swizzle_matrix;
  39   for (int i = 0; i < 20; ++i)
  40     swizzle_matrix.fMat[i] = 0;
  41   swizzle_matrix.fMat[0 + 5 * 2] = 1;
  42   swizzle_matrix.fMat[1 + 5 * 1] = 1;
  43   swizzle_matrix.fMat[2 + 5 * 0] = 1;
  44   swizzle_matrix.fMat[3 + 5 * 3] = 1;
  45
  46   skia::RefPtr<SkColorMatrixFilter> filter =
  47       skia::AdoptRef(SkColorMatrixFilter::Create(swizzle_matrix));
  48   paint.setColorFilter(filter.get());
  49 #endif
  50   return paint;
  51 }
  52
  53 HeadsUpDisplayLayerImpl::Graph::Graph(double indicator_value,
  54                                       double start_upper_bound)
  55     : value(0.0),
  56       min(0.0),
  57       max(0.0),
  58       current_upper_bound(start_upper_bound),
  59       default_upper_bound(start_upper_bound),
  60       indicator(indicator_value) {}
  61
  62 double HeadsUpDisplayLayerImpl::Graph::UpdateUpperBound() {
  63   double target_upper_bound = std::max(max, default_upper_bound);
  64   current_upper_bound += (target_upper_bound - current_upper_bound) * 0.5;
  65   return current_upper_bound;
  66 }
  67
  68 HeadsUpDisplayLayerImpl::HeadsUpDisplayLayerImpl(LayerTreeImpl* tree_impl,
  69                                                  int id)
  70     : LayerImpl(tree_impl, id),
  71       typeface_(gfx::GetHudTypeface()),
  72       internal_contents_scale_(1.f),
  73       fps_graph_(60.0, 80.0),
  74       paint_time_graph_(16.0, 48.0),
  75       fade_step_(0) {
  76   if (!typeface_) {
  77     typeface_ = skia::AdoptRef(
  78         SkTypeface::CreateFromName("monospace", SkTypeface::kBold));
  79   }
  80 }
  81
  82 HeadsUpDisplayLayerImpl::~HeadsUpDisplayLayerImpl() {}
  83
  84 scoped_ptr<LayerImpl> HeadsUpDisplayLayerImpl::CreateLayerImpl(
  85     LayerTreeImpl* tree_impl) {
  86   return HeadsUpDisplayLayerImpl::Create(tree_impl, id());
  87 }
  88
  89 void HeadsUpDisplayLayerImpl::AcquireResource(
  90     ResourceProvider* resource_provider) {
  91   for (ScopedPtrVector<ScopedResource>::iterator it = resources_.begin();
  92        it != resources_.end();
  93        ++it) {
  94     if (!resource_provider->InUseByConsumer((*it)->id())) {
  95       resources_.swap(it, resources_.end() - 1);
  96       return;
  97     }
  98   }
  99
 100   scoped_ptr<ScopedResource> resource =
 101       ScopedResource::Create(resource_provider);
 102   resource->Allocate(internal_content_bounds_,
 103                      ResourceProvider::TEXTURE_HINT_IMMUTABLE, RGBA_8888);
 104   resources_.push_back(resource.Pass());
 105 }
 106
 107 class ResourceSizeIsEqualTo {
 108  public:
 109   explicit ResourceSizeIsEqualTo(const gfx::Size& size_)
 110       : compare_size_(size_) {}
 111
 112   bool operator()(const ScopedResource* resource) {
 113     return resource->size() == compare_size_;
 114   }
 115
 116  private:
 117   const gfx::Size compare_size_;
 118 };
 119
 120 void HeadsUpDisplayLayerImpl::ReleaseUnmatchedSizeResources(
 121     ResourceProvider* resource_provider) {
 122   ScopedPtrVector<ScopedResource>::iterator it_erase =
 123       resources_.partition(ResourceSizeIsEqualTo(internal_content_bounds_));
 124   resources_.erase(it_erase, resources_.end());
 125 }
 126
 127 bool HeadsUpDisplayLayerImpl::WillDraw(DrawMode draw_mode,
 128                                        ResourceProvider* resource_provider) {
 129   if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE)
 130     return false;
 131
 132   internal_contents_scale_ = draw_properties().ideal_contents_scale;
 133   internal_content_bounds_ =
 134       gfx::ToCeiledSize(gfx::ScaleSize(bounds(), internal_contents_scale_));
 135
 136   ReleaseUnmatchedSizeResources(resource_provider);
 137   AcquireResource(resource_provider);
 138   return LayerImpl::WillDraw(draw_mode, resource_provider);
 139 }
 140
 141 void HeadsUpDisplayLayerImpl::AppendQuads(
 142     RenderPass* render_pass,
 143     AppendQuadsData* append_quads_data) {
 144   if (!resources_.back()->id())
 145     return;
 146
 147   SharedQuadState* shared_quad_state =
 148       render_pass->CreateAndAppendSharedQuadState();
 149   PopulateScaledSharedQuadState(shared_quad_state, internal_contents_scale_);
 150
 151   gfx::Rect quad_rect(internal_content_bounds_);
 152   gfx::Rect opaque_rect(contents_opaque() ? quad_rect : gfx::Rect());
 153   gfx::Rect visible_quad_rect(quad_rect);
 154   bool premultiplied_alpha = true;
 155   gfx::PointF uv_top_left(0.f, 0.f);
 156   gfx::PointF uv_bottom_right(1.f, 1.f);
 157   const float vertex_opacity[] = { 1.f, 1.f, 1.f, 1.f };
 158   bool flipped = false;
 159   bool nearest_neighbor = false;
 160   TextureDrawQuad* quad =
 161       render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
 162   // TODO(danakj): crbug.com/455931
 163   layer_tree_impl()->resource_provider()->ValidateResource(
 164       resources_.back()->id());
 165   quad->SetNew(shared_quad_state,
 166                quad_rect,
 167                opaque_rect,
 168                visible_quad_rect,
 169                resources_.back()->id(),
 170                premultiplied_alpha,
 171                uv_top_left,
 172                uv_bottom_right,
 173                SK_ColorTRANSPARENT,
 174                vertex_opacity,
 175                flipped,
 176                nearest_neighbor);
 177 }
 178
 179 void HeadsUpDisplayLayerImpl::UpdateHudTexture(
 180     DrawMode draw_mode,
 181     ResourceProvider* resource_provider) {
 182   if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE || !resources_.back()->id())
 183     return;
 184
 185   SkISize canvas_size;
 186   if (hud_surface_)
 187     canvas_size = hud_surface_->getCanvas()->getDeviceSize();
 188   else
 189     canvas_size.set(0, 0);
 190
 191   if (canvas_size.width() != internal_content_bounds_.width() ||
 192       canvas_size.height() != internal_content_bounds_.height() ||
 193       !hud_surface_) {
 194     TRACE_EVENT0("cc", "ResizeHudCanvas");
 195
 196     hud_surface_ = skia::AdoptRef(SkSurface::NewRasterN32Premul(
 197         internal_content_bounds_.width(), internal_content_bounds_.height()));
 198   }
 199
 200   UpdateHudContents();
 201
 202   {
 203     TRACE_EVENT0("cc", "DrawHudContents");
 204     hud_surface_->getCanvas()->clear(SkColorSetARGB(0, 0, 0, 0));
 205     hud_surface_->getCanvas()->save();
 206     hud_surface_->getCanvas()->scale(internal_contents_scale_,
 207                                      internal_contents_scale_);
 208
 209     DrawHudContents(hud_surface_->getCanvas());
 210
 211     hud_surface_->getCanvas()->restore();
 212   }
 213
 214   TRACE_EVENT0("cc", "UploadHudTexture");
 215   SkImageInfo info;
 216   size_t row_bytes = 0;
 217   const void* pixels = hud_surface_->getCanvas()->peekPixels(&info, &row_bytes);
 218   DCHECK(pixels);
 219   DCHECK(info.colorType() == kN32_SkColorType);
 220   resource_provider->CopyToResource(resources_.back()->id(),
 221                                     static_cast<const uint8_t*>(pixels),
 222                                     internal_content_bounds_);
 223 }
 224
 225 void HeadsUpDisplayLayerImpl::ReleaseResources() {
 226   resources_.clear();
 227 }
 228
 229 gfx::Rect HeadsUpDisplayLayerImpl::GetEnclosingRectInTargetSpace() const {
 230   return GetScaledEnclosingRectInTargetSpace(internal_contents_scale_);
 231 }
 232
 233 void HeadsUpDisplayLayerImpl::UpdateHudContents() {
 234   const LayerTreeDebugState& debug_state = layer_tree_impl()->debug_state();
 235
 236   // Don't update numbers every frame so text is readable.
 237   base::TimeTicks now = layer_tree_impl()->CurrentBeginFrameArgs().frame_time;
 238   if (base::TimeDelta(now - time_of_last_graph_update_).InSecondsF() > 0.25f) {
 239     time_of_last_graph_update_ = now;
 240
 241     if (debug_state.show_fps_counter) {
 242       FrameRateCounter* fps_counter = layer_tree_impl()->frame_rate_counter();
 243       fps_graph_.value = fps_counter->GetAverageFPS();
 244       fps_counter->GetMinAndMaxFPS(&fps_graph_.min, &fps_graph_.max);
 245     }
 246
 247     if (debug_state.continuous_painting) {
 248       PaintTimeCounter* paint_time_counter =
 249           layer_tree_impl()->paint_time_counter();
 250       base::TimeDelta latest, min, max;
 251
 252       if (paint_time_counter->End())
 253         latest = **paint_time_counter->End();
 254       paint_time_counter->GetMinAndMaxPaintTime(&min, &max);
 255
 256       paint_time_graph_.value = latest.InMillisecondsF();
 257       paint_time_graph_.min = min.InMillisecondsF();
 258       paint_time_graph_.max = max.InMillisecondsF();
 259     }
 260
 261     if (debug_state.ShowMemoryStats()) {
 262       MemoryHistory* memory_history = layer_tree_impl()->memory_history();
 263       if (memory_history->End())
 264         memory_entry_ = **memory_history->End();
 265       else
 266         memory_entry_ = MemoryHistory::Entry();
 267     }
 268   }
 269
 270   fps_graph_.UpdateUpperBound();
 271   paint_time_graph_.UpdateUpperBound();
 272 }
 273
 274 void HeadsUpDisplayLayerImpl::DrawHudContents(SkCanvas* canvas) {
 275   const LayerTreeDebugState& debug_state = layer_tree_impl()->debug_state();
 276
 277   if (debug_state.ShowHudRects()) {
 278     DrawDebugRects(canvas, layer_tree_impl()->debug_rect_history());
 279     if (IsAnimatingHUDContents()) {
 280       layer_tree_impl()->SetNeedsRedraw();
 281     }
 282   }
 283
 284   SkRect area = SkRect::MakeEmpty();
 285   if (debug_state.continuous_painting) {
 286     area = DrawPaintTimeDisplay(
 287         canvas, layer_tree_impl()->paint_time_counter(), 0, 0);
 288   } else if (debug_state.show_fps_counter) {
 289     // Don't show the FPS display when continuous painting is enabled, because
 290     // it would show misleading numbers.
 291     area =
 292         DrawFPSDisplay(canvas, layer_tree_impl()->frame_rate_counter(), 0, 0);
 293   }
 294
 295   if (debug_state.show_fps_counter || debug_state.continuous_painting) {
 296     area = DrawGpuRasterizationStatus(canvas, 0, area.bottom(),
 297                                       SkMaxScalar(area.width(), 150));
 298   }
 299
 300   if (debug_state.ShowMemoryStats())
 301     DrawMemoryDisplay(canvas, 0, area.bottom(), SkMaxScalar(area.width(), 150));
 302 }
 303 int HeadsUpDisplayLayerImpl::MeasureText(SkPaint* paint,
 304                                          const std::string& text,
 305                                          int size) const {
 306   const bool anti_alias = paint->isAntiAlias();
 307   paint->setAntiAlias(true);
 308   paint->setTextSize(size);
 309   paint->setTypeface(typeface_.get());
 310   SkScalar text_width = paint->measureText(text.c_str(), text.length());
 311
 312   paint->setAntiAlias(anti_alias);
 313   return SkScalarCeilToInt(text_width);
 314 }
 315 void HeadsUpDisplayLayerImpl::DrawText(SkCanvas* canvas,
 316                                        SkPaint* paint,
 317                                        const std::string& text,
 318                                        SkPaint::Align align,
 319                                        int size,
 320                                        int x,
 321                                        int y) const {
 322   const bool anti_alias = paint->isAntiAlias();
 323   paint->setAntiAlias(true);
 324
 325   paint->setTextSize(size);
 326   paint->setTextAlign(align);
 327   paint->setTypeface(typeface_.get());
 328   canvas->drawText(text.c_str(), text.length(), x, y, *paint);
 329
 330   paint->setAntiAlias(anti_alias);
 331 }
 332
 333 void HeadsUpDisplayLayerImpl::DrawText(SkCanvas* canvas,
 334                                        SkPaint* paint,
 335                                        const std::string& text,
 336                                        SkPaint::Align align,
 337                                        int size,
 338                                        const SkPoint& pos) const {
 339   DrawText(canvas, paint, text, align, size, pos.x(), pos.y());
 340 }
 341
 342 void HeadsUpDisplayLayerImpl::DrawGraphBackground(SkCanvas* canvas,
 343                                                   SkPaint* paint,
 344                                                   const SkRect& bounds) const {
 345   paint->setColor(DebugColors::HUDBackgroundColor());
 346   canvas->drawRect(bounds, *paint);
 347 }
 348
 349 void HeadsUpDisplayLayerImpl::DrawGraphLines(SkCanvas* canvas,
 350                                              SkPaint* paint,
 351                                              const SkRect& bounds,
 352                                              const Graph& graph) const {
 353   // Draw top and bottom line.
 354   paint->setColor(DebugColors::HUDSeparatorLineColor());
 355   canvas->drawLine(bounds.left(),
 356                    bounds.top() - 1,
 357                    bounds.right(),
 358                    bounds.top() - 1,
 359                    *paint);
 360   canvas->drawLine(
 361       bounds.left(), bounds.bottom(), bounds.right(), bounds.bottom(), *paint);
 362
 363   // Draw indicator line (additive blend mode to increase contrast when drawn on
 364   // top of graph).
 365   paint->setColor(DebugColors::HUDIndicatorLineColor());
 366   paint->setXfermodeMode(SkXfermode::kPlus_Mode);
 367   const double indicator_top =
 368       bounds.height() * (1.0 - graph.indicator / graph.current_upper_bound) -
 369       1.0;
 370   canvas->drawLine(bounds.left(),
 371                    bounds.top() + indicator_top,
 372                    bounds.right(),
 373                    bounds.top() + indicator_top,
 374                    *paint);
 375   paint->setXfermode(nullptr);
 376 }
 377
 378 SkRect HeadsUpDisplayLayerImpl::DrawFPSDisplay(
 379     SkCanvas* canvas,
 380     const FrameRateCounter* fps_counter,
 381     int right,
 382     int top) const {
 383   const int kPadding = 4;
 384   const int kGap = 6;
 385
 386   const int kFontHeight = 15;
 387
 388   const int kGraphWidth = fps_counter->time_stamp_history_size() - 2;
 389   const int kGraphHeight = 40;
 390
 391   const int kHistogramWidth = 37;
 392
 393   int width = kGraphWidth + kHistogramWidth + 4 * kPadding;
 394   int height = kFontHeight + kGraphHeight + 4 * kPadding + 2;
 395   int left = bounds().width() - width - right;
 396   SkRect area = SkRect::MakeXYWH(left, top, width, height);
 397
 398   SkPaint paint = CreatePaint();
 399   DrawGraphBackground(canvas, &paint, area);
 400
 401   SkRect text_bounds =
 402       SkRect::MakeXYWH(left + kPadding,
 403                        top + kPadding,
 404                        kGraphWidth + kHistogramWidth + kGap + 2,
 405                        kFontHeight);
 406   SkRect graph_bounds = SkRect::MakeXYWH(left + kPadding,
 407                                          text_bounds.bottom() + 2 * kPadding,
 408                                          kGraphWidth,
 409                                          kGraphHeight);
 410   SkRect histogram_bounds = SkRect::MakeXYWH(graph_bounds.right() + kGap,
 411                                              graph_bounds.top(),
 412                                              kHistogramWidth,
 413                                              kGraphHeight);
 414
 415   const std::string value_text =
 416       base::StringPrintf("FPS:%5.1f", fps_graph_.value);
 417   const std::string min_max_text =
 418       base::StringPrintf("%.0f-%.0f", fps_graph_.min, fps_graph_.max);
 419
 420   VLOG(1) << value_text;
 421
 422   paint.setColor(DebugColors::FPSDisplayTextAndGraphColor());
 423   DrawText(canvas,
 424            &paint,
 425            value_text,
 426            SkPaint::kLeft_Align,
 427            kFontHeight,
 428            text_bounds.left(),
 429            text_bounds.bottom());
 430   DrawText(canvas,
 431            &paint,
 432            min_max_text,
 433            SkPaint::kRight_Align,
 434            kFontHeight,
 435            text_bounds.right(),
 436            text_bounds.bottom());
 437
 438   DrawGraphLines(canvas, &paint, graph_bounds, fps_graph_);
 439
 440   // Collect graph and histogram data.
 441   SkPath path;
 442
 443   const int kHistogramSize = 20;
 444   double histogram[kHistogramSize] = { 1.0 };
 445   double max_bucket_value = 1.0;
 446
 447   for (FrameRateCounter::RingBufferType::Iterator it = --fps_counter->end(); it;
 448        --it) {
 449     base::TimeDelta delta = fps_counter->RecentFrameInterval(it.index() + 1);
 450
 451     // Skip this particular instantaneous frame rate if it is not likely to have
 452     // been valid.
 453     if (!fps_counter->IsBadFrameInterval(delta)) {
 454       double fps = 1.0 / delta.InSecondsF();
 455
 456       // Clamp the FPS to the range we want to plot visually.
 457       double p = fps / fps_graph_.current_upper_bound;
 458       if (p > 1.0)
 459         p = 1.0;
 460
 461       // Plot this data point.
 462       SkPoint cur =
 463           SkPoint::Make(graph_bounds.left() + it.index(),
 464                         graph_bounds.bottom() - p * graph_bounds.height());
 465       if (path.isEmpty())
 466         path.moveTo(cur);
 467       else
 468         path.lineTo(cur);
 469
 470       // Use the fps value to find the right bucket in the histogram.
 471       int bucket_index = floor(p * (kHistogramSize - 1));
 472
 473       // Add the delta time to take the time spent at that fps rate into
 474       // account.
 475       histogram[bucket_index] += delta.InSecondsF();
 476       max_bucket_value = std::max(histogram[bucket_index], max_bucket_value);
 477     }
 478   }
 479
 480   // Draw FPS histogram.
 481   paint.setColor(DebugColors::HUDSeparatorLineColor());
 482   canvas->drawLine(histogram_bounds.left() - 1,
 483                    histogram_bounds.top() - 1,
 484                    histogram_bounds.left() - 1,
 485                    histogram_bounds.bottom() + 1,
 486                    paint);
 487   canvas->drawLine(histogram_bounds.right() + 1,
 488                    histogram_bounds.top() - 1,
 489                    histogram_bounds.right() + 1,
 490                    histogram_bounds.bottom() + 1,
 491                    paint);
 492
 493   paint.setColor(DebugColors::FPSDisplayTextAndGraphColor());
 494   const double bar_height = histogram_bounds.height() / kHistogramSize;
 495
 496   for (int i = kHistogramSize - 1; i >= 0; --i) {
 497     if (histogram[i] > 0) {
 498       double bar_width =
 499           histogram[i] / max_bucket_value * histogram_bounds.width();
 500       canvas->drawRect(
 501           SkRect::MakeXYWH(histogram_bounds.left(),
 502                            histogram_bounds.bottom() - (i + 1) * bar_height,
 503                            bar_width,
 504                            1),
 505           paint);
 506     }
 507   }
 508
 509   // Draw FPS graph.
 510   paint.setAntiAlias(true);
 511   paint.setStyle(SkPaint::kStroke_Style);
 512   paint.setStrokeWidth(1);
 513   canvas->drawPath(path, paint);
 514
 515   return area;
 516 }
 517
 518 SkRect HeadsUpDisplayLayerImpl::DrawMemoryDisplay(SkCanvas* canvas,
 519                                                   int right,
 520                                                   int top,
 521                                                   int width) const {
 522   if (!memory_entry_.total_bytes_used)
 523     return SkRect::MakeEmpty();
 524
 525   const int kPadding = 4;
 526   const int kFontHeight = 13;
 527
 528   const int height = 3 * kFontHeight + 4 * kPadding;
 529   const int left = bounds().width() - width - right;
 530   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 531
 532   const double kMegabyte = 1024.0 * 1024.0;
 533
 534   SkPaint paint = CreatePaint();
 535   DrawGraphBackground(canvas, &paint, area);
 536
 537   SkPoint title_pos = SkPoint::Make(left + kPadding, top + kFontHeight);
 538   SkPoint stat1_pos = SkPoint::Make(left + width - kPadding - 1,
 539                                     top + kPadding + 2 * kFontHeight);
 540   SkPoint stat2_pos = SkPoint::Make(left + width - kPadding - 1,
 541                                     top + 2 * kPadding + 3 * kFontHeight);
 542
 543   paint.setColor(DebugColors::MemoryDisplayTextColor());
 544   DrawText(canvas,
 545            &paint,
 546            "GPU memory",
 547            SkPaint::kLeft_Align,
 548            kFontHeight,
 549            title_pos);
 550
 551   std::string text = base::StringPrintf(
 552       "%6.1f MB used", memory_entry_.total_bytes_used / kMegabyte);
 553   DrawText(canvas, &paint, text, SkPaint::kRight_Align, kFontHeight, stat1_pos);
 554
 555   if (!memory_entry_.had_enough_memory)
 556     paint.setColor(SK_ColorRED);
 557   text = base::StringPrintf("%6.1f MB max ",
 558                             memory_entry_.total_budget_in_bytes / kMegabyte);
 559   DrawText(canvas, &paint, text, SkPaint::kRight_Align, kFontHeight, stat2_pos);
 560
 561   return area;
 562 }
 563
 564 SkRect HeadsUpDisplayLayerImpl::DrawGpuRasterizationStatus(SkCanvas* canvas,
 565                                                            int right,
 566                                                            int top,
 567                                                            int width) const {
 568   std::string status;
 569   SkColor color = SK_ColorRED;
 570   switch (layer_tree_impl()->GetGpuRasterizationStatus()) {
 571     case GpuRasterizationStatus::ON:
 572       status = "on";
 573       color = SK_ColorGREEN;
 574       break;
 575     case GpuRasterizationStatus::ON_FORCED:
 576       status = "on (forced)";
 577       color = SK_ColorGREEN;
 578       break;
 579     case GpuRasterizationStatus::OFF_DEVICE:
 580       status = "off (device)";
 581       color = SK_ColorRED;
 582       break;
 583     case GpuRasterizationStatus::OFF_VIEWPORT:
 584       status = "off (viewport)";
 585       color = SK_ColorYELLOW;
 586       break;
 587     case GpuRasterizationStatus::OFF_CONTENT:
 588       status = "off (content)";
 589       color = SK_ColorYELLOW;
 590       break;
 591   }
 592
 593   if (status.empty())
 594     return SkRect::MakeEmpty();
 595
 596   const int kPadding = 4;
 597   const int kFontHeight = 13;
 598
 599   const int height = 2 * kFontHeight + 3 * kPadding;
 600   const int left = bounds().width() - width - right;
 601   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 602
 603   SkPaint paint = CreatePaint();
 604   DrawGraphBackground(canvas, &paint, area);
 605
 606   SkPoint gpu_status_pos = SkPoint::Make(left + width - kPadding,
 607                                          top + 2 * kFontHeight + 2 * kPadding);
 608
 609   paint.setColor(color);
 610   DrawText(canvas, &paint, "GPU raster: ", SkPaint::kLeft_Align, kFontHeight,
 611            left + kPadding, top + kFontHeight + kPadding);
 612   DrawText(canvas, &paint, status, SkPaint::kRight_Align, kFontHeight,
 613            gpu_status_pos);
 614
 615   return area;
 616 }
 617
 618 SkRect HeadsUpDisplayLayerImpl::DrawPaintTimeDisplay(
 619     SkCanvas* canvas,
 620     const PaintTimeCounter* paint_time_counter,
 621     int right,
 622     int top) const {
 623   const int kPadding = 4;
 624   const int kFontHeight = 14;
 625
 626   const int kGraphWidth = paint_time_counter->HistorySize();
 627   const int kGraphHeight = 40;
 628
 629   SkPaint paint = CreatePaint();
 630
 631   const std::string title = "Compositor frame time (ms)";
 632   int title_text_width = MeasureText(&paint, title, kFontHeight);
 633   int contents_width = std::max(title_text_width, kGraphWidth);
 634
 635   const int width = contents_width + 2 * kPadding;
 636   const int height =
 637       kFontHeight + kGraphHeight + 4 * kPadding + 2 + kFontHeight + kPadding;
 638   const int left = bounds().width() - width - right;
 639
 640   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 641
 642   DrawGraphBackground(canvas, &paint, area);
 643
 644   SkRect text_bounds = SkRect::MakeXYWH(left + kPadding, top + kPadding,
 645                                         contents_width, kFontHeight);
 646   SkRect text_bounds2 =
 647       SkRect::MakeXYWH(left + kPadding, text_bounds.bottom() + kPadding,
 648                        contents_width, kFontHeight);
 649   SkRect graph_bounds = SkRect::MakeXYWH(left + (width - kGraphWidth) / 2,
 650                                          text_bounds2.bottom() + 2 * kPadding,
 651                                          kGraphWidth, kGraphHeight);
 652
 653   const std::string value_text =
 654       base::StringPrintf("%.1f", paint_time_graph_.value);
 655   const std::string min_max_text = base::StringPrintf(
 656       "%.1f-%.1f", paint_time_graph_.min, paint_time_graph_.max);
 657
 658   paint.setColor(DebugColors::PaintTimeDisplayTextAndGraphColor());
 659   DrawText(canvas, &paint, title, SkPaint::kLeft_Align, kFontHeight,
 660            text_bounds.left(), text_bounds.bottom());
 661   DrawText(canvas,
 662            &paint,
 663            value_text,
 664            SkPaint::kLeft_Align,
 665            kFontHeight,
 666            text_bounds2.left(),
 667            text_bounds2.bottom());
 668   DrawText(canvas,
 669            &paint,
 670            min_max_text,
 671            SkPaint::kRight_Align,
 672            kFontHeight,
 673            text_bounds2.right(),
 674            text_bounds2.bottom());
 675
 676   paint.setColor(DebugColors::PaintTimeDisplayTextAndGraphColor());
 677   for (PaintTimeCounter::RingBufferType::Iterator it =
 678            paint_time_counter->End();
 679        it;
 680        --it) {
 681     double pt = it->InMillisecondsF();
 682
 683     if (pt == 0.0)
 684       continue;
 685
 686     double p = pt / paint_time_graph_.current_upper_bound;
 687     if (p > 1.0)
 688       p = 1.0;
 689
 690     canvas->drawRect(
 691         SkRect::MakeXYWH(graph_bounds.left() + it.index(),
 692                          graph_bounds.bottom() - p * graph_bounds.height(),
 693                          1,
 694                          p * graph_bounds.height()),
 695         paint);
 696   }
 697
 698   DrawGraphLines(canvas, &paint, graph_bounds, paint_time_graph_);
 699
 700   return area;
 701 }
 702
 703 void HeadsUpDisplayLayerImpl::DrawDebugRect(
 704     SkCanvas* canvas,
 705     SkPaint* paint,
 706     const DebugRect& rect,
 707     SkColor stroke_color,
 708     SkColor fill_color,
 709     float stroke_width,
 710     const std::string& label_text) const {
 711   gfx::Rect debug_layer_rect =
 712       gfx::ScaleToEnclosingRect(rect.rect, 1.0 / internal_contents_scale_,
 713                                 1.0 / internal_contents_scale_);
 714   SkIRect sk_rect = RectToSkIRect(debug_layer_rect);
 715   paint->setColor(fill_color);
 716   paint->setStyle(SkPaint::kFill_Style);
 717   canvas->drawIRect(sk_rect, *paint);
 718
 719   paint->setColor(stroke_color);
 720   paint->setStyle(SkPaint::kStroke_Style);
 721   paint->setStrokeWidth(SkFloatToScalar(stroke_width));
 722   canvas->drawIRect(sk_rect, *paint);
 723
 724   if (label_text.length()) {
 725     const int kFontHeight = 12;
 726     const int kPadding = 3;
 727
 728     // The debug_layer_rect may be huge, and converting to a floating point may
 729     // be lossy, so intersect with the HUD layer bounds first to prevent that.
 730     gfx::Rect clip_rect = debug_layer_rect;
 731     clip_rect.Intersect(gfx::Rect(internal_content_bounds_));
 732     SkRect sk_clip_rect = RectToSkRect(clip_rect);
 733
 734     canvas->save();
 735     canvas->clipRect(sk_clip_rect);
 736     canvas->translate(sk_clip_rect.x(), sk_clip_rect.y());
 737
 738     SkPaint label_paint = CreatePaint();
 739     label_paint.setTextSize(kFontHeight);
 740     label_paint.setTypeface(typeface_.get());
 741     label_paint.setColor(stroke_color);
 742
 743     const SkScalar label_text_width =
 744         label_paint.measureText(label_text.c_str(), label_text.length());
 745     canvas->drawRect(SkRect::MakeWH(label_text_width + 2 * kPadding,
 746                                     kFontHeight + 2 * kPadding),
 747                      label_paint);
 748
 749     label_paint.setAntiAlias(true);
 750     label_paint.setColor(SkColorSetARGB(255, 50, 50, 50));
 751     canvas->drawText(label_text.c_str(),
 752                      label_text.length(),
 753                      kPadding,
 754                      kFontHeight * 0.8f + kPadding,
 755                      label_paint);
 756
 757     canvas->restore();
 758   }
 759 }
 760
 761 void HeadsUpDisplayLayerImpl::DrawDebugRects(
 762     SkCanvas* canvas,
 763     DebugRectHistory* debug_rect_history) {
 764   SkPaint paint = CreatePaint();
 765
 766   const std::vector<DebugRect>& debug_rects = debug_rect_history->debug_rects();
 767   std::vector<DebugRect> new_paint_rects;
 768
 769   for (size_t i = 0; i < debug_rects.size(); ++i) {
 770     SkColor stroke_color = 0;
 771     SkColor fill_color = 0;
 772     float stroke_width = 0.f;
 773     std::string label_text;
 774
 775     switch (debug_rects[i].type) {
 776       case PAINT_RECT_TYPE:
 777         new_paint_rects.push_back(debug_rects[i]);
 778         continue;
 779       case PROPERTY_CHANGED_RECT_TYPE:
 780         stroke_color = DebugColors::PropertyChangedRectBorderColor();
 781         fill_color = DebugColors::PropertyChangedRectFillColor();
 782         stroke_width = DebugColors::PropertyChangedRectBorderWidth();
 783         break;
 784       case SURFACE_DAMAGE_RECT_TYPE:
 785         stroke_color = DebugColors::SurfaceDamageRectBorderColor();
 786         fill_color = DebugColors::SurfaceDamageRectFillColor();
 787         stroke_width = DebugColors::SurfaceDamageRectBorderWidth();
 788         break;
 789       case REPLICA_SCREEN_SPACE_RECT_TYPE:
 790         stroke_color = DebugColors::ScreenSpaceSurfaceReplicaRectBorderColor();
 791         fill_color = DebugColors::ScreenSpaceSurfaceReplicaRectFillColor();
 792         stroke_width = DebugColors::ScreenSpaceSurfaceReplicaRectBorderWidth();
 793         break;
 794       case SCREEN_SPACE_RECT_TYPE:
 795         stroke_color = DebugColors::ScreenSpaceLayerRectBorderColor();
 796         fill_color = DebugColors::ScreenSpaceLayerRectFillColor();
 797         stroke_width = DebugColors::ScreenSpaceLayerRectBorderWidth();
 798         break;
 799       case TOUCH_EVENT_HANDLER_RECT_TYPE:
 800         stroke_color = DebugColors::TouchEventHandlerRectBorderColor();
 801         fill_color = DebugColors::TouchEventHandlerRectFillColor();
 802         stroke_width = DebugColors::TouchEventHandlerRectBorderWidth();
 803         label_text = "touch event listener";
 804         break;
 805       case WHEEL_EVENT_HANDLER_RECT_TYPE:
 806         stroke_color = DebugColors::WheelEventHandlerRectBorderColor();
 807         fill_color = DebugColors::WheelEventHandlerRectFillColor();
 808         stroke_width = DebugColors::WheelEventHandlerRectBorderWidth();
 809         label_text = "mousewheel event listener";
 810         break;
 811       case SCROLL_EVENT_HANDLER_RECT_TYPE:
 812         stroke_color = DebugColors::ScrollEventHandlerRectBorderColor();
 813         fill_color = DebugColors::ScrollEventHandlerRectFillColor();
 814         stroke_width = DebugColors::ScrollEventHandlerRectBorderWidth();
 815         label_text = "scroll event listener";
 816         break;
 817       case NON_FAST_SCROLLABLE_RECT_TYPE:
 818         stroke_color = DebugColors::NonFastScrollableRectBorderColor();
 819         fill_color = DebugColors::NonFastScrollableRectFillColor();
 820         stroke_width = DebugColors::NonFastScrollableRectBorderWidth();
 821         label_text = "repaints on scroll";
 822         break;
 823       case ANIMATION_BOUNDS_RECT_TYPE:
 824         stroke_color = DebugColors::LayerAnimationBoundsBorderColor();
 825         fill_color = DebugColors::LayerAnimationBoundsFillColor();
 826         stroke_width = DebugColors::LayerAnimationBoundsBorderWidth();
 827         label_text = "animation bounds";
 828         break;
 829     }
 830
 831     DrawDebugRect(canvas,
 832                   &paint,
 833                   debug_rects[i],
 834                   stroke_color,
 835                   fill_color,
 836                   stroke_width,
 837                   label_text);
 838   }
 839
 840   if (new_paint_rects.size()) {
 841     paint_rects_.swap(new_paint_rects);
 842     fade_step_ = DebugColors::kFadeSteps;
 843   }
 844   if (fade_step_ > 0) {
 845     fade_step_--;
 846     for (size_t i = 0; i < paint_rects_.size(); ++i) {
 847       DrawDebugRect(canvas,
 848                     &paint,
 849                     paint_rects_[i],
 850                     DebugColors::PaintRectBorderColor(fade_step_),
 851                     DebugColors::PaintRectFillColor(fade_step_),
 852                     DebugColors::PaintRectBorderWidth(),
 853                     "");
 854     }
 855   }
 856 }
 857
 858 const char* HeadsUpDisplayLayerImpl::LayerTypeAsString() const {
 859   return "cc::HeadsUpDisplayLayerImpl";
 860 }
 861
 862 void HeadsUpDisplayLayerImpl::AsValueInto(
 863     base::trace_event::TracedValue* dict) const {
 864   LayerImpl::AsValueInto(dict);
 865   dict->SetString("layer_name", "Heads Up Display Layer");
 866 }
 867
 868 }  // namespace cc