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/numerics/safe_conversions.h"
  11 #include "base/strings/stringprintf.h"
  12 #include "base/trace_event/trace_event.h"
  13 #include "base/trace_event/trace_event_argument.h"
  14 #include "cc/debug/debug_colors.h"
  15 #include "cc/debug/frame_rate_counter.h"
  16 #include "cc/debug/paint_time_counter.h"
  17 #include "cc/output/begin_frame_args.h"
  18 #include "cc/output/renderer.h"
  19 #include "cc/quads/texture_draw_quad.h"
  20 #include "cc/resources/memory_history.h"
  21 #include "cc/trees/layer_tree_host_impl.h"
  22 #include "cc/trees/layer_tree_impl.h"
  23 #include "skia/ext/platform_canvas.h"
  24 #include "third_party/skia/include/core/SkPaint.h"
  25 #include "third_party/skia/include/core/SkTypeface.h"
  26 #include "third_party/skia/include/effects/SkColorMatrixFilter.h"
  27 #include "ui/gfx/geometry/point.h"
  28 #include "ui/gfx/geometry/size.h"
  29 #include "ui/gfx/geometry/size_conversions.h"
  30 #include "ui/gfx/hud_font.h"
  31
  32 namespace cc {
  33
  34 static inline SkPaint CreatePaint() {
  35   SkPaint paint;
  36 #if (SK_R32_SHIFT || SK_B32_SHIFT != 16)
  37   // The SkCanvas is in RGBA but the shader is expecting BGRA, so we need to
  38   // swizzle our colors when drawing to the SkCanvas.
  39   SkColorMatrix swizzle_matrix;
  40   for (int i = 0; i < 20; ++i)
  41     swizzle_matrix.fMat[i] = 0;
  42   swizzle_matrix.fMat[0 + 5 * 2] = 1;
  43   swizzle_matrix.fMat[1 + 5 * 1] = 1;
  44   swizzle_matrix.fMat[2 + 5 * 0] = 1;
  45   swizzle_matrix.fMat[3 + 5 * 3] = 1;
  46
  47   skia::RefPtr<SkColorMatrixFilter> filter =
  48       skia::AdoptRef(SkColorMatrixFilter::Create(swizzle_matrix));
  49   paint.setColorFilter(filter.get());
  50 #endif
  51   return paint;
  52 }
  53
  54 HeadsUpDisplayLayerImpl::Graph::Graph(double indicator_value,
  55                                       double start_upper_bound)
  56     : value(0.0),
  57       min(0.0),
  58       max(0.0),
  59       current_upper_bound(start_upper_bound),
  60       default_upper_bound(start_upper_bound),
  61       indicator(indicator_value) {}
  62
  63 double HeadsUpDisplayLayerImpl::Graph::UpdateUpperBound() {
  64   double target_upper_bound = std::max(max, default_upper_bound);
  65   current_upper_bound += (target_upper_bound - current_upper_bound) * 0.5;
  66   return current_upper_bound;
  67 }
  68
  69 HeadsUpDisplayLayerImpl::HeadsUpDisplayLayerImpl(LayerTreeImpl* tree_impl,
  70                                                  int id)
  71     : LayerImpl(tree_impl, id),
  72       typeface_(gfx::GetHudTypeface()),
  73       internal_contents_scale_(1.f),
  74       fps_graph_(60.0, 80.0),
  75       paint_time_graph_(16.0, 48.0),
  76       fade_step_(0) {
  77   if (!typeface_) {
  78     typeface_ = skia::AdoptRef(
  79         SkTypeface::CreateFromName("monospace", SkTypeface::kBold));
  80   }
  81 }
  82
  83 HeadsUpDisplayLayerImpl::~HeadsUpDisplayLayerImpl() {}
  84
  85 scoped_ptr<LayerImpl> HeadsUpDisplayLayerImpl::CreateLayerImpl(
  86     LayerTreeImpl* tree_impl) {
  87   return HeadsUpDisplayLayerImpl::Create(tree_impl, id());
  88 }
  89
  90 void HeadsUpDisplayLayerImpl::AcquireResource(
  91     ResourceProvider* resource_provider) {
  92   for (ScopedPtrVector<ScopedResource>::iterator it = resources_.begin();
  93        it != resources_.end();
  94        ++it) {
  95     if (!resource_provider->InUseByConsumer((*it)->id())) {
  96       resources_.swap(it, resources_.end() - 1);
  97       return;
  98     }
  99   }
 100
 101   scoped_ptr<ScopedResource> resource =
 102       ScopedResource::Create(resource_provider);
 103   resource->Allocate(internal_content_bounds_,
 104                      ResourceProvider::TEXTURE_HINT_IMMUTABLE, RGBA_8888);
 105   resources_.push_back(resource.Pass());
 106 }
 107
 108 class ResourceSizeIsEqualTo {
 109  public:
 110   explicit ResourceSizeIsEqualTo(const gfx::Size& size_)
 111       : compare_size_(size_) {}
 112
 113   bool operator()(const ScopedResource* resource) {
 114     return resource->size() == compare_size_;
 115   }
 116
 117  private:
 118   const gfx::Size compare_size_;
 119 };
 120
 121 void HeadsUpDisplayLayerImpl::ReleaseUnmatchedSizeResources(
 122     ResourceProvider* resource_provider) {
 123   ScopedPtrVector<ScopedResource>::iterator it_erase =
 124       resources_.partition(ResourceSizeIsEqualTo(internal_content_bounds_));
 125   resources_.erase(it_erase, resources_.end());
 126 }
 127
 128 bool HeadsUpDisplayLayerImpl::WillDraw(DrawMode draw_mode,
 129                                        ResourceProvider* resource_provider) {
 130   if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE)
 131     return false;
 132
 133   internal_contents_scale_ = draw_properties().ideal_contents_scale;
 134   internal_content_bounds_ =
 135       gfx::ToCeiledSize(gfx::ScaleSize(bounds(), internal_contents_scale_));
 136
 137   ReleaseUnmatchedSizeResources(resource_provider);
 138   AcquireResource(resource_provider);
 139   return LayerImpl::WillDraw(draw_mode, resource_provider);
 140 }
 141
 142 void HeadsUpDisplayLayerImpl::AppendQuads(
 143     RenderPass* render_pass,
 144     AppendQuadsData* append_quads_data) {
 145   if (!resources_.back()->id())
 146     return;
 147
 148   SharedQuadState* shared_quad_state =
 149       render_pass->CreateAndAppendSharedQuadState();
 150   PopulateScaledSharedQuadState(shared_quad_state, internal_contents_scale_);
 151
 152   gfx::Rect quad_rect(internal_content_bounds_);
 153   gfx::Rect opaque_rect(contents_opaque() ? quad_rect : gfx::Rect());
 154   gfx::Rect visible_quad_rect(quad_rect);
 155   bool premultiplied_alpha = true;
 156   gfx::PointF uv_top_left(0.f, 0.f);
 157   gfx::PointF uv_bottom_right(1.f, 1.f);
 158   const float vertex_opacity[] = { 1.f, 1.f, 1.f, 1.f };
 159   bool flipped = false;
 160   bool nearest_neighbor = false;
 161   TextureDrawQuad* quad =
 162       render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
 163   quad->SetNew(shared_quad_state,
 164                quad_rect,
 165                opaque_rect,
 166                visible_quad_rect,
 167                resources_.back()->id(),
 168                premultiplied_alpha,
 169                uv_top_left,
 170                uv_bottom_right,
 171                SK_ColorTRANSPARENT,
 172                vertex_opacity,
 173                flipped,
 174                nearest_neighbor);
 175   ValidateQuadResources(quad);
 176 }
 177
 178 void HeadsUpDisplayLayerImpl::UpdateHudTexture(
 179     DrawMode draw_mode,
 180     ResourceProvider* resource_provider) {
 181   if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE || !resources_.back()->id())
 182     return;
 183
 184   SkISize canvas_size;
 185   if (hud_surface_)
 186     canvas_size = hud_surface_->getCanvas()->getDeviceSize();
 187   else
 188     canvas_size.set(0, 0);
 189
 190   if (canvas_size.width() != internal_content_bounds_.width() ||
 191       canvas_size.height() != internal_content_bounds_.height() ||
 192       !hud_surface_) {
 193     TRACE_EVENT0("cc", "ResizeHudCanvas");
 194
 195     hud_surface_ = skia::AdoptRef(SkSurface::NewRasterN32Premul(
 196         internal_content_bounds_.width(), internal_content_bounds_.height()));
 197   }
 198
 199   UpdateHudContents();
 200
 201   {
 202     TRACE_EVENT0("cc", "DrawHudContents");
 203     hud_surface_->getCanvas()->clear(SkColorSetARGB(0, 0, 0, 0));
 204     hud_surface_->getCanvas()->save();
 205     hud_surface_->getCanvas()->scale(internal_contents_scale_,
 206                                      internal_contents_scale_);
 207
 208     DrawHudContents(hud_surface_->getCanvas());
 209
 210     hud_surface_->getCanvas()->restore();
 211   }
 212
 213   TRACE_EVENT0("cc", "UploadHudTexture");
 214   SkImageInfo info;
 215   size_t row_bytes = 0;
 216   const void* pixels = hud_surface_->getCanvas()->peekPixels(&info, &row_bytes);
 217   DCHECK(pixels);
 218   DCHECK(info.colorType() == kN32_SkColorType);
 219   resource_provider->CopyToResource(resources_.back()->id(),
 220                                     static_cast<const uint8_t*>(pixels),
 221                                     internal_content_bounds_);
 222 }
 223
 224 void HeadsUpDisplayLayerImpl::ReleaseResources() {
 225   resources_.clear();
 226 }
 227
 228 gfx::Rect HeadsUpDisplayLayerImpl::GetEnclosingRectInTargetSpace() const {
 229   return GetScaledEnclosingRectInTargetSpace(internal_contents_scale_);
 230 }
 231
 232 void HeadsUpDisplayLayerImpl::UpdateHudContents() {
 233   const LayerTreeDebugState& debug_state = layer_tree_impl()->debug_state();
 234
 235   // Don't update numbers every frame so text is readable.
 236   base::TimeTicks now = layer_tree_impl()->CurrentBeginFrameArgs().frame_time;
 237   if (base::TimeDelta(now - time_of_last_graph_update_).InSecondsF() > 0.25f) {
 238     time_of_last_graph_update_ = now;
 239
 240     if (debug_state.show_fps_counter) {
 241       FrameRateCounter* fps_counter = layer_tree_impl()->frame_rate_counter();
 242       fps_graph_.value = fps_counter->GetAverageFPS();
 243       fps_counter->GetMinAndMaxFPS(&fps_graph_.min, &fps_graph_.max);
 244     }
 245
 246     if (debug_state.continuous_painting) {
 247       PaintTimeCounter* paint_time_counter =
 248           layer_tree_impl()->paint_time_counter();
 249       base::TimeDelta latest, min, max;
 250
 251       if (paint_time_counter->End())
 252         latest = **paint_time_counter->End();
 253       paint_time_counter->GetMinAndMaxPaintTime(&min, &max);
 254
 255       paint_time_graph_.value = latest.InMillisecondsF();
 256       paint_time_graph_.min = min.InMillisecondsF();
 257       paint_time_graph_.max = max.InMillisecondsF();
 258     }
 259
 260     if (debug_state.ShowMemoryStats()) {
 261       MemoryHistory* memory_history = layer_tree_impl()->memory_history();
 262       if (memory_history->End())
 263         memory_entry_ = **memory_history->End();
 264       else
 265         memory_entry_ = MemoryHistory::Entry();
 266     }
 267   }
 268
 269   fps_graph_.UpdateUpperBound();
 270   paint_time_graph_.UpdateUpperBound();
 271 }
 272
 273 void HeadsUpDisplayLayerImpl::DrawHudContents(SkCanvas* canvas) {
 274   const LayerTreeDebugState& debug_state = layer_tree_impl()->debug_state();
 275
 276   if (debug_state.ShowHudRects()) {
 277     DrawDebugRects(canvas, layer_tree_impl()->debug_rect_history());
 278     if (IsAnimatingHUDContents()) {
 279       layer_tree_impl()->SetNeedsRedraw();
 280     }
 281   }
 282
 283   SkRect area = SkRect::MakeEmpty();
 284   if (debug_state.continuous_painting) {
 285     area = DrawPaintTimeDisplay(
 286         canvas, layer_tree_impl()->paint_time_counter(), 0, 0);
 287   } else if (debug_state.show_fps_counter) {
 288     // Don't show the FPS display when continuous painting is enabled, because
 289     // it would show misleading numbers.
 290     area =
 291         DrawFPSDisplay(canvas, layer_tree_impl()->frame_rate_counter(), 0, 0);
 292   }
 293
 294   if (debug_state.show_fps_counter || debug_state.continuous_painting) {
 295     area = DrawGpuRasterizationStatus(canvas, 0, area.bottom(),
 296                                       SkMaxScalar(area.width(), 150));
 297   }
 298
 299   if (debug_state.ShowMemoryStats())
 300     DrawMemoryDisplay(canvas, 0, area.bottom(), SkMaxScalar(area.width(), 150));
 301 }
 302 int HeadsUpDisplayLayerImpl::MeasureText(SkPaint* paint,
 303                                          const std::string& text,
 304                                          int size) const {
 305   const bool anti_alias = paint->isAntiAlias();
 306   paint->setAntiAlias(true);
 307   paint->setTextSize(size);
 308   paint->setTypeface(typeface_.get());
 309   SkScalar text_width = paint->measureText(text.c_str(), text.length());
 310
 311   paint->setAntiAlias(anti_alias);
 312   return SkScalarCeilToInt(text_width);
 313 }
 314 void HeadsUpDisplayLayerImpl::DrawText(SkCanvas* canvas,
 315                                        SkPaint* paint,
 316                                        const std::string& text,
 317                                        SkPaint::Align align,
 318                                        int size,
 319                                        int x,
 320                                        int y) const {
 321   const bool anti_alias = paint->isAntiAlias();
 322   paint->setAntiAlias(true);
 323
 324   paint->setTextSize(size);
 325   paint->setTextAlign(align);
 326   paint->setTypeface(typeface_.get());
 327   canvas->drawText(text.c_str(), text.length(), x, y, *paint);
 328
 329   paint->setAntiAlias(anti_alias);
 330 }
 331
 332 void HeadsUpDisplayLayerImpl::DrawText(SkCanvas* canvas,
 333                                        SkPaint* paint,
 334                                        const std::string& text,
 335                                        SkPaint::Align align,
 336                                        int size,
 337                                        const SkPoint& pos) const {
 338   DrawText(canvas, paint, text, align, size, pos.x(), pos.y());
 339 }
 340
 341 void HeadsUpDisplayLayerImpl::DrawGraphBackground(SkCanvas* canvas,
 342                                                   SkPaint* paint,
 343                                                   const SkRect& bounds) const {
 344   paint->setColor(DebugColors::HUDBackgroundColor());
 345   canvas->drawRect(bounds, *paint);
 346 }
 347
 348 void HeadsUpDisplayLayerImpl::DrawGraphLines(SkCanvas* canvas,
 349                                              SkPaint* paint,
 350                                              const SkRect& bounds,
 351                                              const Graph& graph) const {
 352   // Draw top and bottom line.
 353   paint->setColor(DebugColors::HUDSeparatorLineColor());
 354   canvas->drawLine(bounds.left(),
 355                    bounds.top() - 1,
 356                    bounds.right(),
 357                    bounds.top() - 1,
 358                    *paint);
 359   canvas->drawLine(
 360       bounds.left(), bounds.bottom(), bounds.right(), bounds.bottom(), *paint);
 361
 362   // Draw indicator line (additive blend mode to increase contrast when drawn on
 363   // top of graph).
 364   paint->setColor(DebugColors::HUDIndicatorLineColor());
 365   paint->setXfermodeMode(SkXfermode::kPlus_Mode);
 366   const double indicator_top =
 367       bounds.height() * (1.0 - graph.indicator / graph.current_upper_bound) -
 368       1.0;
 369   canvas->drawLine(bounds.left(),
 370                    bounds.top() + indicator_top,
 371                    bounds.right(),
 372                    bounds.top() + indicator_top,
 373                    *paint);
 374   paint->setXfermode(nullptr);
 375 }
 376
 377 SkRect HeadsUpDisplayLayerImpl::DrawFPSDisplay(
 378     SkCanvas* canvas,
 379     const FrameRateCounter* fps_counter,
 380     int right,
 381     int top) const {
 382   const int kPadding = 4;
 383   const int kGap = 6;
 384
 385   const int kFontHeight = 15;
 386
 387   const int kGraphWidth =
 388       base::saturated_cast<int>(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::MSAA_CONTENT:
 588       status = "MSAA (content)";
 589       color = SK_ColorCYAN;
 590       break;
 591     case GpuRasterizationStatus::OFF_CONTENT:
 592       status = "off (content)";
 593       color = SK_ColorYELLOW;
 594       break;
 595   }
 596
 597   if (status.empty())
 598     return SkRect::MakeEmpty();
 599
 600   const int kPadding = 4;
 601   const int kFontHeight = 13;
 602
 603   const int height = 2 * kFontHeight + 3 * kPadding;
 604   const int left = bounds().width() - width - right;
 605   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 606
 607   SkPaint paint = CreatePaint();
 608   DrawGraphBackground(canvas, &paint, area);
 609
 610   SkPoint gpu_status_pos = SkPoint::Make(left + width - kPadding,
 611                                          top + 2 * kFontHeight + 2 * kPadding);
 612
 613   paint.setColor(color);
 614   DrawText(canvas, &paint, "GPU raster: ", SkPaint::kLeft_Align, kFontHeight,
 615            left + kPadding, top + kFontHeight + kPadding);
 616   DrawText(canvas, &paint, status, SkPaint::kRight_Align, kFontHeight,
 617            gpu_status_pos);
 618
 619   return area;
 620 }
 621
 622 SkRect HeadsUpDisplayLayerImpl::DrawPaintTimeDisplay(
 623     SkCanvas* canvas,
 624     const PaintTimeCounter* paint_time_counter,
 625     int right,
 626     int top) const {
 627   const int kPadding = 4;
 628   const int kFontHeight = 14;
 629
 630   const int kGraphWidth =
 631       base::saturated_cast<int>(paint_time_counter->HistorySize());
 632   const int kGraphHeight = 40;
 633
 634   SkPaint paint = CreatePaint();
 635
 636   const std::string title = "Compositor frame time (ms)";
 637   int title_text_width = MeasureText(&paint, title, kFontHeight);
 638   int contents_width = std::max(title_text_width, kGraphWidth);
 639
 640   const int width = contents_width + 2 * kPadding;
 641   const int height =
 642       kFontHeight + kGraphHeight + 4 * kPadding + 2 + kFontHeight + kPadding;
 643   const int left = bounds().width() - width - right;
 644
 645   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 646
 647   DrawGraphBackground(canvas, &paint, area);
 648
 649   SkRect text_bounds = SkRect::MakeXYWH(left + kPadding, top + kPadding,
 650                                         contents_width, kFontHeight);
 651   SkRect text_bounds2 =
 652       SkRect::MakeXYWH(left + kPadding, text_bounds.bottom() + kPadding,
 653                        contents_width, kFontHeight);
 654   SkRect graph_bounds = SkRect::MakeXYWH(left + (width - kGraphWidth) / 2,
 655                                          text_bounds2.bottom() + 2 * kPadding,
 656                                          kGraphWidth, kGraphHeight);
 657
 658   const std::string value_text =
 659       base::StringPrintf("%.1f", paint_time_graph_.value);
 660   const std::string min_max_text = base::StringPrintf(
 661       "%.1f-%.1f", paint_time_graph_.min, paint_time_graph_.max);
 662
 663   paint.setColor(DebugColors::PaintTimeDisplayTextAndGraphColor());
 664   DrawText(canvas, &paint, title, SkPaint::kLeft_Align, kFontHeight,
 665            text_bounds.left(), text_bounds.bottom());
 666   DrawText(canvas,
 667            &paint,
 668            value_text,
 669            SkPaint::kLeft_Align,
 670            kFontHeight,
 671            text_bounds2.left(),
 672            text_bounds2.bottom());
 673   DrawText(canvas,
 674            &paint,
 675            min_max_text,
 676            SkPaint::kRight_Align,
 677            kFontHeight,
 678            text_bounds2.right(),
 679            text_bounds2.bottom());
 680
 681   paint.setColor(DebugColors::PaintTimeDisplayTextAndGraphColor());
 682   for (PaintTimeCounter::RingBufferType::Iterator it =
 683            paint_time_counter->End();
 684        it;
 685        --it) {
 686     double pt = it->InMillisecondsF();
 687
 688     if (pt == 0.0)
 689       continue;
 690
 691     double p = pt / paint_time_graph_.current_upper_bound;
 692     if (p > 1.0)
 693       p = 1.0;
 694
 695     canvas->drawRect(
 696         SkRect::MakeXYWH(graph_bounds.left() + it.index(),
 697                          graph_bounds.bottom() - p * graph_bounds.height(),
 698                          1,
 699                          p * graph_bounds.height()),
 700         paint);
 701   }
 702
 703   DrawGraphLines(canvas, &paint, graph_bounds, paint_time_graph_);
 704
 705   return area;
 706 }
 707
 708 void HeadsUpDisplayLayerImpl::DrawDebugRect(
 709     SkCanvas* canvas,
 710     SkPaint* paint,
 711     const DebugRect& rect,
 712     SkColor stroke_color,
 713     SkColor fill_color,
 714     float stroke_width,
 715     const std::string& label_text) const {
 716   gfx::Rect debug_layer_rect =
 717       gfx::ScaleToEnclosingRect(rect.rect, 1.0 / internal_contents_scale_,
 718                                 1.0 / internal_contents_scale_);
 719   SkIRect sk_rect = RectToSkIRect(debug_layer_rect);
 720   paint->setColor(fill_color);
 721   paint->setStyle(SkPaint::kFill_Style);
 722   canvas->drawIRect(sk_rect, *paint);
 723
 724   paint->setColor(stroke_color);
 725   paint->setStyle(SkPaint::kStroke_Style);
 726   paint->setStrokeWidth(SkFloatToScalar(stroke_width));
 727   canvas->drawIRect(sk_rect, *paint);
 728
 729   if (label_text.length()) {
 730     const int kFontHeight = 12;
 731     const int kPadding = 3;
 732
 733     // The debug_layer_rect may be huge, and converting to a floating point may
 734     // be lossy, so intersect with the HUD layer bounds first to prevent that.
 735     gfx::Rect clip_rect = debug_layer_rect;
 736     clip_rect.Intersect(gfx::Rect(internal_content_bounds_));
 737     SkRect sk_clip_rect = RectToSkRect(clip_rect);
 738
 739     canvas->save();
 740     canvas->clipRect(sk_clip_rect);
 741     canvas->translate(sk_clip_rect.x(), sk_clip_rect.y());
 742
 743     SkPaint label_paint = CreatePaint();
 744     label_paint.setTextSize(kFontHeight);
 745     label_paint.setTypeface(typeface_.get());
 746     label_paint.setColor(stroke_color);
 747
 748     const SkScalar label_text_width =
 749         label_paint.measureText(label_text.c_str(), label_text.length());
 750     canvas->drawRect(SkRect::MakeWH(label_text_width + 2 * kPadding,
 751                                     kFontHeight + 2 * kPadding),
 752                      label_paint);
 753
 754     label_paint.setAntiAlias(true);
 755     label_paint.setColor(SkColorSetARGB(255, 50, 50, 50));
 756     canvas->drawText(label_text.c_str(),
 757                      label_text.length(),
 758                      kPadding,
 759                      kFontHeight * 0.8f + kPadding,
 760                      label_paint);
 761
 762     canvas->restore();
 763   }
 764 }
 765
 766 void HeadsUpDisplayLayerImpl::DrawDebugRects(
 767     SkCanvas* canvas,
 768     DebugRectHistory* debug_rect_history) {
 769   SkPaint paint = CreatePaint();
 770
 771   const std::vector<DebugRect>& debug_rects = debug_rect_history->debug_rects();
 772   std::vector<DebugRect> new_paint_rects;
 773
 774   for (size_t i = 0; i < debug_rects.size(); ++i) {
 775     SkColor stroke_color = 0;
 776     SkColor fill_color = 0;
 777     float stroke_width = 0.f;
 778     std::string label_text;
 779
 780     switch (debug_rects[i].type) {
 781       case PAINT_RECT_TYPE:
 782         new_paint_rects.push_back(debug_rects[i]);
 783         continue;
 784       case PROPERTY_CHANGED_RECT_TYPE:
 785         stroke_color = DebugColors::PropertyChangedRectBorderColor();
 786         fill_color = DebugColors::PropertyChangedRectFillColor();
 787         stroke_width = DebugColors::PropertyChangedRectBorderWidth();
 788         break;
 789       case SURFACE_DAMAGE_RECT_TYPE:
 790         stroke_color = DebugColors::SurfaceDamageRectBorderColor();
 791         fill_color = DebugColors::SurfaceDamageRectFillColor();
 792         stroke_width = DebugColors::SurfaceDamageRectBorderWidth();
 793         break;
 794       case REPLICA_SCREEN_SPACE_RECT_TYPE:
 795         stroke_color = DebugColors::ScreenSpaceSurfaceReplicaRectBorderColor();
 796         fill_color = DebugColors::ScreenSpaceSurfaceReplicaRectFillColor();
 797         stroke_width = DebugColors::ScreenSpaceSurfaceReplicaRectBorderWidth();
 798         break;
 799       case SCREEN_SPACE_RECT_TYPE:
 800         stroke_color = DebugColors::ScreenSpaceLayerRectBorderColor();
 801         fill_color = DebugColors::ScreenSpaceLayerRectFillColor();
 802         stroke_width = DebugColors::ScreenSpaceLayerRectBorderWidth();
 803         break;
 804       case TOUCH_EVENT_HANDLER_RECT_TYPE:
 805         stroke_color = DebugColors::TouchEventHandlerRectBorderColor();
 806         fill_color = DebugColors::TouchEventHandlerRectFillColor();
 807         stroke_width = DebugColors::TouchEventHandlerRectBorderWidth();
 808         label_text = "touch event listener";
 809         break;
 810       case WHEEL_EVENT_HANDLER_RECT_TYPE:
 811         stroke_color = DebugColors::WheelEventHandlerRectBorderColor();
 812         fill_color = DebugColors::WheelEventHandlerRectFillColor();
 813         stroke_width = DebugColors::WheelEventHandlerRectBorderWidth();
 814         label_text = "mousewheel event listener";
 815         break;
 816       case SCROLL_EVENT_HANDLER_RECT_TYPE:
 817         stroke_color = DebugColors::ScrollEventHandlerRectBorderColor();
 818         fill_color = DebugColors::ScrollEventHandlerRectFillColor();
 819         stroke_width = DebugColors::ScrollEventHandlerRectBorderWidth();
 820         label_text = "scroll event listener";
 821         break;
 822       case NON_FAST_SCROLLABLE_RECT_TYPE:
 823         stroke_color = DebugColors::NonFastScrollableRectBorderColor();
 824         fill_color = DebugColors::NonFastScrollableRectFillColor();
 825         stroke_width = DebugColors::NonFastScrollableRectBorderWidth();
 826         label_text = "repaints on scroll";
 827         break;
 828       case ANIMATION_BOUNDS_RECT_TYPE:
 829         stroke_color = DebugColors::LayerAnimationBoundsBorderColor();
 830         fill_color = DebugColors::LayerAnimationBoundsFillColor();
 831         stroke_width = DebugColors::LayerAnimationBoundsBorderWidth();
 832         label_text = "animation bounds";
 833         break;
 834     }
 835
 836     DrawDebugRect(canvas,
 837                   &paint,
 838                   debug_rects[i],
 839                   stroke_color,
 840                   fill_color,
 841                   stroke_width,
 842                   label_text);
 843   }
 844
 845   if (new_paint_rects.size()) {
 846     paint_rects_.swap(new_paint_rects);
 847     fade_step_ = DebugColors::kFadeSteps;
 848   }
 849   if (fade_step_ > 0) {
 850     fade_step_--;
 851     for (size_t i = 0; i < paint_rects_.size(); ++i) {
 852       DrawDebugRect(canvas,
 853                     &paint,
 854                     paint_rects_[i],
 855                     DebugColors::PaintRectBorderColor(fade_step_),
 856                     DebugColors::PaintRectFillColor(fade_step_),
 857                     DebugColors::PaintRectBorderWidth(),
 858                     "");
 859     }
 860   }
 861 }
 862
 863 const char* HeadsUpDisplayLayerImpl::LayerTypeAsString() const {
 864   return "cc::HeadsUpDisplayLayerImpl";
 865 }
 866
 867 void HeadsUpDisplayLayerImpl::AsValueInto(
 868     base::trace_event::TracedValue* dict) const {
 869   LayerImpl::AsValueInto(dict);
 870   dict->SetString("layer_name", "Heads Up Display Layer");
 871 }
 872
 873 }  // namespace cc