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/SkPath.h"
  26 #include "third_party/skia/include/core/SkTypeface.h"
  27 #include "third_party/skia/include/effects/SkColorMatrixFilter.h"
  28 #include "ui/gfx/geometry/point.h"
  29 #include "ui/gfx/geometry/size.h"
  30 #include "ui/gfx/geometry/size_conversions.h"
  31 #include "ui/gfx/hud_font.h"
  32
  33 namespace cc {
  34
  35 static inline SkPaint CreatePaint() {
  36   SkPaint paint;
  37 #if (SK_R32_SHIFT || SK_B32_SHIFT != 16)
  38   // The SkCanvas is in RGBA but the shader is expecting BGRA, so we need to
  39   // swizzle our colors when drawing to the SkCanvas.
  40   SkColorMatrix swizzle_matrix;
  41   for (int i = 0; i < 20; ++i)
  42     swizzle_matrix.fMat[i] = 0;
  43   swizzle_matrix.fMat[0 + 5 * 2] = 1;
  44   swizzle_matrix.fMat[1 + 5 * 1] = 1;
  45   swizzle_matrix.fMat[2 + 5 * 0] = 1;
  46   swizzle_matrix.fMat[3 + 5 * 3] = 1;
  47
  48   skia::RefPtr<SkColorMatrixFilter> filter =
  49       skia::AdoptRef(SkColorMatrixFilter::Create(swizzle_matrix));
  50   paint.setColorFilter(filter.get());
  51 #endif
  52   return paint;
  53 }
  54
  55 HeadsUpDisplayLayerImpl::Graph::Graph(double indicator_value,
  56                                       double start_upper_bound)
  57     : value(0.0),
  58       min(0.0),
  59       max(0.0),
  60       current_upper_bound(start_upper_bound),
  61       default_upper_bound(start_upper_bound),
  62       indicator(indicator_value) {}
  63
  64 double HeadsUpDisplayLayerImpl::Graph::UpdateUpperBound() {
  65   double target_upper_bound = std::max(max, default_upper_bound);
  66   current_upper_bound += (target_upper_bound - current_upper_bound) * 0.5;
  67   return current_upper_bound;
  68 }
  69
  70 HeadsUpDisplayLayerImpl::HeadsUpDisplayLayerImpl(LayerTreeImpl* tree_impl,
  71                                                  int id)
  72     : LayerImpl(tree_impl, id),
  73       typeface_(gfx::GetHudTypeface()),
  74       internal_contents_scale_(1.f),
  75       fps_graph_(60.0, 80.0),
  76       paint_time_graph_(16.0, 48.0),
  77       fade_step_(0) {
  78   if (!typeface_) {
  79     typeface_ = skia::AdoptRef(
  80         SkTypeface::CreateFromName("monospace", SkTypeface::kBold));
  81   }
  82 }
  83
  84 HeadsUpDisplayLayerImpl::~HeadsUpDisplayLayerImpl() {}
  85
  86 scoped_ptr<LayerImpl> HeadsUpDisplayLayerImpl::CreateLayerImpl(
  87     LayerTreeImpl* tree_impl) {
  88   return HeadsUpDisplayLayerImpl::Create(tree_impl, id());
  89 }
  90
  91 void HeadsUpDisplayLayerImpl::AcquireResource(
  92     ResourceProvider* resource_provider) {
  93   for (ScopedPtrVector<ScopedResource>::iterator it = resources_.begin();
  94        it != resources_.end();
  95        ++it) {
  96     if (!resource_provider->InUseByConsumer((*it)->id())) {
  97       resources_.swap(it, resources_.end() - 1);
  98       return;
  99     }
 100   }
 101
 102   scoped_ptr<ScopedResource> resource =
 103       ScopedResource::Create(resource_provider);
 104   resource->Allocate(internal_content_bounds_,
 105                      ResourceProvider::TEXTURE_HINT_IMMUTABLE, RGBA_8888);
 106   resources_.push_back(resource.Pass());
 107 }
 108
 109 class ResourceSizeIsEqualTo {
 110  public:
 111   explicit ResourceSizeIsEqualTo(const gfx::Size& size_)
 112       : compare_size_(size_) {}
 113
 114   bool operator()(const ScopedResource* resource) {
 115     return resource->size() == compare_size_;
 116   }
 117
 118  private:
 119   const gfx::Size compare_size_;
 120 };
 121
 122 void HeadsUpDisplayLayerImpl::ReleaseUnmatchedSizeResources(
 123     ResourceProvider* resource_provider) {
 124   ScopedPtrVector<ScopedResource>::iterator it_erase =
 125       resources_.partition(ResourceSizeIsEqualTo(internal_content_bounds_));
 126   resources_.erase(it_erase, resources_.end());
 127 }
 128
 129 bool HeadsUpDisplayLayerImpl::WillDraw(DrawMode draw_mode,
 130                                        ResourceProvider* resource_provider) {
 131   if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE)
 132     return false;
 133
 134   internal_contents_scale_ = GetIdealContentsScale();
 135   internal_content_bounds_ =
 136       gfx::ToCeiledSize(gfx::ScaleSize(bounds(), internal_contents_scale_));
 137
 138   ReleaseUnmatchedSizeResources(resource_provider);
 139   AcquireResource(resource_provider);
 140   return LayerImpl::WillDraw(draw_mode, resource_provider);
 141 }
 142
 143 void HeadsUpDisplayLayerImpl::AppendQuads(
 144     RenderPass* render_pass,
 145     AppendQuadsData* append_quads_data) {
 146   if (!resources_.back()->id())
 147     return;
 148
 149   SharedQuadState* shared_quad_state =
 150       render_pass->CreateAndAppendSharedQuadState();
 151   PopulateScaledSharedQuadState(shared_quad_state, internal_contents_scale_);
 152
 153   gfx::Rect quad_rect(internal_content_bounds_);
 154   gfx::Rect opaque_rect(contents_opaque() ? quad_rect : gfx::Rect());
 155   gfx::Rect visible_quad_rect(quad_rect);
 156   bool premultiplied_alpha = true;
 157   gfx::PointF uv_top_left(0.f, 0.f);
 158   gfx::PointF uv_bottom_right(1.f, 1.f);
 159   const float vertex_opacity[] = { 1.f, 1.f, 1.f, 1.f };
 160   bool flipped = false;
 161   bool nearest_neighbor = false;
 162   TextureDrawQuad* quad =
 163       render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
 164   quad->SetNew(shared_quad_state,
 165                quad_rect,
 166                opaque_rect,
 167                visible_quad_rect,
 168                resources_.back()->id(),
 169                premultiplied_alpha,
 170                uv_top_left,
 171                uv_bottom_right,
 172                SK_ColorTRANSPARENT,
 173                vertex_opacity,
 174                flipped,
 175                nearest_neighbor);
 176   ValidateQuadResources(quad);
 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   DCHECK_GT(internal_contents_scale_, 0.f);
 231   return GetScaledEnclosingRectInTargetSpace(internal_contents_scale_);
 232 }
 233
 234 void HeadsUpDisplayLayerImpl::UpdateHudContents() {
 235   const LayerTreeDebugState& debug_state = layer_tree_impl()->debug_state();
 236
 237   // Don't update numbers every frame so text is readable.
 238   base::TimeTicks now = layer_tree_impl()->CurrentBeginFrameArgs().frame_time;
 239   if (base::TimeDelta(now - time_of_last_graph_update_).InSecondsF() > 0.25f) {
 240     time_of_last_graph_update_ = now;
 241
 242     if (debug_state.show_fps_counter) {
 243       FrameRateCounter* fps_counter = layer_tree_impl()->frame_rate_counter();
 244       fps_graph_.value = fps_counter->GetAverageFPS();
 245       fps_counter->GetMinAndMaxFPS(&fps_graph_.min, &fps_graph_.max);
 246     }
 247
 248     if (debug_state.continuous_painting) {
 249       PaintTimeCounter* paint_time_counter =
 250           layer_tree_impl()->paint_time_counter();
 251       base::TimeDelta latest, min, max;
 252
 253       if (paint_time_counter->End())
 254         latest = **paint_time_counter->End();
 255       paint_time_counter->GetMinAndMaxPaintTime(&min, &max);
 256
 257       paint_time_graph_.value = latest.InMillisecondsF();
 258       paint_time_graph_.min = min.InMillisecondsF();
 259       paint_time_graph_.max = max.InMillisecondsF();
 260     }
 261
 262     if (debug_state.ShowMemoryStats()) {
 263       MemoryHistory* memory_history = layer_tree_impl()->memory_history();
 264       if (memory_history->End())
 265         memory_entry_ = **memory_history->End();
 266       else
 267         memory_entry_ = MemoryHistory::Entry();
 268     }
 269   }
 270
 271   fps_graph_.UpdateUpperBound();
 272   paint_time_graph_.UpdateUpperBound();
 273 }
 274
 275 void HeadsUpDisplayLayerImpl::DrawHudContents(SkCanvas* canvas) {
 276   const LayerTreeDebugState& debug_state = layer_tree_impl()->debug_state();
 277
 278   if (debug_state.ShowHudRects()) {
 279     DrawDebugRects(canvas, layer_tree_impl()->debug_rect_history());
 280     if (IsAnimatingHUDContents()) {
 281       layer_tree_impl()->SetNeedsRedraw();
 282     }
 283   }
 284
 285   SkRect area = SkRect::MakeEmpty();
 286   if (debug_state.continuous_painting) {
 287     area = DrawPaintTimeDisplay(
 288         canvas, layer_tree_impl()->paint_time_counter(), 0, 0);
 289   } else if (debug_state.show_fps_counter) {
 290     // Don't show the FPS display when continuous painting is enabled, because
 291     // it would show misleading numbers.
 292     area =
 293         DrawFPSDisplay(canvas, layer_tree_impl()->frame_rate_counter(), 0, 0);
 294   }
 295
 296   if (debug_state.show_fps_counter || debug_state.continuous_painting) {
 297     area = DrawGpuRasterizationStatus(canvas, 0, area.bottom(),
 298                                       SkMaxScalar(area.width(), 150));
 299   }
 300
 301   if (debug_state.ShowMemoryStats())
 302     DrawMemoryDisplay(canvas, 0, area.bottom(), SkMaxScalar(area.width(), 150));
 303 }
 304 int HeadsUpDisplayLayerImpl::MeasureText(SkPaint* paint,
 305                                          const std::string& text,
 306                                          int size) const {
 307   const bool anti_alias = paint->isAntiAlias();
 308   paint->setAntiAlias(true);
 309   paint->setTextSize(size);
 310   paint->setTypeface(typeface_.get());
 311   SkScalar text_width = paint->measureText(text.c_str(), text.length());
 312
 313   paint->setAntiAlias(anti_alias);
 314   return SkScalarCeilToInt(text_width);
 315 }
 316 void HeadsUpDisplayLayerImpl::DrawText(SkCanvas* canvas,
 317                                        SkPaint* paint,
 318                                        const std::string& text,
 319                                        SkPaint::Align align,
 320                                        int size,
 321                                        int x,
 322                                        int y) const {
 323   const bool anti_alias = paint->isAntiAlias();
 324   paint->setAntiAlias(true);
 325
 326   paint->setTextSize(size);
 327   paint->setTextAlign(align);
 328   paint->setTypeface(typeface_.get());
 329   canvas->drawText(text.c_str(), text.length(), x, y, *paint);
 330
 331   paint->setAntiAlias(anti_alias);
 332 }
 333
 334 void HeadsUpDisplayLayerImpl::DrawText(SkCanvas* canvas,
 335                                        SkPaint* paint,
 336                                        const std::string& text,
 337                                        SkPaint::Align align,
 338                                        int size,
 339                                        const SkPoint& pos) const {
 340   DrawText(canvas, paint, text, align, size, pos.x(), pos.y());
 341 }
 342
 343 void HeadsUpDisplayLayerImpl::DrawGraphBackground(SkCanvas* canvas,
 344                                                   SkPaint* paint,
 345                                                   const SkRect& bounds) const {
 346   paint->setColor(DebugColors::HUDBackgroundColor());
 347   canvas->drawRect(bounds, *paint);
 348 }
 349
 350 void HeadsUpDisplayLayerImpl::DrawGraphLines(SkCanvas* canvas,
 351                                              SkPaint* paint,
 352                                              const SkRect& bounds,
 353                                              const Graph& graph) const {
 354   // Draw top and bottom line.
 355   paint->setColor(DebugColors::HUDSeparatorLineColor());
 356   canvas->drawLine(bounds.left(),
 357                    bounds.top() - 1,
 358                    bounds.right(),
 359                    bounds.top() - 1,
 360                    *paint);
 361   canvas->drawLine(
 362       bounds.left(), bounds.bottom(), bounds.right(), bounds.bottom(), *paint);
 363
 364   // Draw indicator line (additive blend mode to increase contrast when drawn on
 365   // top of graph).
 366   paint->setColor(DebugColors::HUDIndicatorLineColor());
 367   paint->setXfermodeMode(SkXfermode::kPlus_Mode);
 368   const double indicator_top =
 369       bounds.height() * (1.0 - graph.indicator / graph.current_upper_bound) -
 370       1.0;
 371   canvas->drawLine(bounds.left(),
 372                    bounds.top() + indicator_top,
 373                    bounds.right(),
 374                    bounds.top() + indicator_top,
 375                    *paint);
 376   paint->setXfermode(nullptr);
 377 }
 378
 379 SkRect HeadsUpDisplayLayerImpl::DrawFPSDisplay(
 380     SkCanvas* canvas,
 381     const FrameRateCounter* fps_counter,
 382     int right,
 383     int top) const {
 384   const int kPadding = 4;
 385   const int kGap = 6;
 386
 387   const int kFontHeight = 15;
 388
 389   const int kGraphWidth =
 390       base::saturated_cast<int>(fps_counter->time_stamp_history_size()) - 2;
 391   const int kGraphHeight = 40;
 392
 393   const int kHistogramWidth = 37;
 394
 395   int width = kGraphWidth + kHistogramWidth + 4 * kPadding;
 396   int height = kFontHeight + kGraphHeight + 4 * kPadding + 2;
 397   int left = bounds().width() - width - right;
 398   SkRect area = SkRect::MakeXYWH(left, top, width, height);
 399
 400   SkPaint paint = CreatePaint();
 401   DrawGraphBackground(canvas, &paint, area);
 402
 403   SkRect text_bounds =
 404       SkRect::MakeXYWH(left + kPadding,
 405                        top + kPadding,
 406                        kGraphWidth + kHistogramWidth + kGap + 2,
 407                        kFontHeight);
 408   SkRect graph_bounds = SkRect::MakeXYWH(left + kPadding,
 409                                          text_bounds.bottom() + 2 * kPadding,
 410                                          kGraphWidth,
 411                                          kGraphHeight);
 412   SkRect histogram_bounds = SkRect::MakeXYWH(graph_bounds.right() + kGap,
 413                                              graph_bounds.top(),
 414                                              kHistogramWidth,
 415                                              kGraphHeight);
 416
 417   const std::string value_text =
 418       base::StringPrintf("FPS:%5.1f", fps_graph_.value);
 419   const std::string min_max_text =
 420       base::StringPrintf("%.0f-%.0f", fps_graph_.min, fps_graph_.max);
 421
 422   VLOG(1) << value_text;
 423
 424   paint.setColor(DebugColors::FPSDisplayTextAndGraphColor());
 425   DrawText(canvas,
 426            &paint,
 427            value_text,
 428            SkPaint::kLeft_Align,
 429            kFontHeight,
 430            text_bounds.left(),
 431            text_bounds.bottom());
 432   DrawText(canvas,
 433            &paint,
 434            min_max_text,
 435            SkPaint::kRight_Align,
 436            kFontHeight,
 437            text_bounds.right(),
 438            text_bounds.bottom());
 439
 440   DrawGraphLines(canvas, &paint, graph_bounds, fps_graph_);
 441
 442   // Collect graph and histogram data.
 443   SkPath path;
 444
 445   const int kHistogramSize = 20;
 446   double histogram[kHistogramSize] = { 1.0 };
 447   double max_bucket_value = 1.0;
 448
 449   for (FrameRateCounter::RingBufferType::Iterator it = --fps_counter->end(); it;
 450        --it) {
 451     base::TimeDelta delta = fps_counter->RecentFrameInterval(it.index() + 1);
 452
 453     // Skip this particular instantaneous frame rate if it is not likely to have
 454     // been valid.
 455     if (!fps_counter->IsBadFrameInterval(delta)) {
 456       double fps = 1.0 / delta.InSecondsF();
 457
 458       // Clamp the FPS to the range we want to plot visually.
 459       double p = fps / fps_graph_.current_upper_bound;
 460       if (p > 1.0)
 461         p = 1.0;
 462
 463       // Plot this data point.
 464       SkPoint cur =
 465           SkPoint::Make(graph_bounds.left() + it.index(),
 466                         graph_bounds.bottom() - p * graph_bounds.height());
 467       if (path.isEmpty())
 468         path.moveTo(cur);
 469       else
 470         path.lineTo(cur);
 471
 472       // Use the fps value to find the right bucket in the histogram.
 473       int bucket_index = floor(p * (kHistogramSize - 1));
 474
 475       // Add the delta time to take the time spent at that fps rate into
 476       // account.
 477       histogram[bucket_index] += delta.InSecondsF();
 478       max_bucket_value = std::max(histogram[bucket_index], max_bucket_value);
 479     }
 480   }
 481
 482   // Draw FPS histogram.
 483   paint.setColor(DebugColors::HUDSeparatorLineColor());
 484   canvas->drawLine(histogram_bounds.left() - 1,
 485                    histogram_bounds.top() - 1,
 486                    histogram_bounds.left() - 1,
 487                    histogram_bounds.bottom() + 1,
 488                    paint);
 489   canvas->drawLine(histogram_bounds.right() + 1,
 490                    histogram_bounds.top() - 1,
 491                    histogram_bounds.right() + 1,
 492                    histogram_bounds.bottom() + 1,
 493                    paint);
 494
 495   paint.setColor(DebugColors::FPSDisplayTextAndGraphColor());
 496   const double bar_height = histogram_bounds.height() / kHistogramSize;
 497
 498   for (int i = kHistogramSize - 1; i >= 0; --i) {
 499     if (histogram[i] > 0) {
 500       double bar_width =
 501           histogram[i] / max_bucket_value * histogram_bounds.width();
 502       canvas->drawRect(
 503           SkRect::MakeXYWH(histogram_bounds.left(),
 504                            histogram_bounds.bottom() - (i + 1) * bar_height,
 505                            bar_width,
 506                            1),
 507           paint);
 508     }
 509   }
 510
 511   // Draw FPS graph.
 512   paint.setAntiAlias(true);
 513   paint.setStyle(SkPaint::kStroke_Style);
 514   paint.setStrokeWidth(1);
 515   canvas->drawPath(path, paint);
 516
 517   return area;
 518 }
 519
 520 SkRect HeadsUpDisplayLayerImpl::DrawMemoryDisplay(SkCanvas* canvas,
 521                                                   int right,
 522                                                   int top,
 523                                                   int width) const {
 524   if (!memory_entry_.total_bytes_used)
 525     return SkRect::MakeEmpty();
 526
 527   const int kPadding = 4;
 528   const int kFontHeight = 13;
 529
 530   const int height = 3 * kFontHeight + 4 * kPadding;
 531   const int left = bounds().width() - width - right;
 532   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 533
 534   const double kMegabyte = 1024.0 * 1024.0;
 535
 536   SkPaint paint = CreatePaint();
 537   DrawGraphBackground(canvas, &paint, area);
 538
 539   SkPoint title_pos = SkPoint::Make(left + kPadding, top + kFontHeight);
 540   SkPoint stat1_pos = SkPoint::Make(left + width - kPadding - 1,
 541                                     top + kPadding + 2 * kFontHeight);
 542   SkPoint stat2_pos = SkPoint::Make(left + width - kPadding - 1,
 543                                     top + 2 * kPadding + 3 * kFontHeight);
 544
 545   paint.setColor(DebugColors::MemoryDisplayTextColor());
 546   DrawText(canvas,
 547            &paint,
 548            "GPU memory",
 549            SkPaint::kLeft_Align,
 550            kFontHeight,
 551            title_pos);
 552
 553   std::string text = base::StringPrintf(
 554       "%6.1f MB used", memory_entry_.total_bytes_used / kMegabyte);
 555   DrawText(canvas, &paint, text, SkPaint::kRight_Align, kFontHeight, stat1_pos);
 556
 557   if (!memory_entry_.had_enough_memory)
 558     paint.setColor(SK_ColorRED);
 559   text = base::StringPrintf("%6.1f MB max ",
 560                             memory_entry_.total_budget_in_bytes / kMegabyte);
 561   DrawText(canvas, &paint, text, SkPaint::kRight_Align, kFontHeight, stat2_pos);
 562
 563   return area;
 564 }
 565
 566 SkRect HeadsUpDisplayLayerImpl::DrawGpuRasterizationStatus(SkCanvas* canvas,
 567                                                            int right,
 568                                                            int top,
 569                                                            int width) const {
 570   std::string status;
 571   SkColor color = SK_ColorRED;
 572   switch (layer_tree_impl()->GetGpuRasterizationStatus()) {
 573     case GpuRasterizationStatus::ON:
 574       status = "on";
 575       color = SK_ColorGREEN;
 576       break;
 577     case GpuRasterizationStatus::ON_FORCED:
 578       status = "on (forced)";
 579       color = SK_ColorGREEN;
 580       break;
 581     case GpuRasterizationStatus::OFF_DEVICE:
 582       status = "off (device)";
 583       color = SK_ColorRED;
 584       break;
 585     case GpuRasterizationStatus::OFF_VIEWPORT:
 586       status = "off (viewport)";
 587       color = SK_ColorYELLOW;
 588       break;
 589     case GpuRasterizationStatus::MSAA_CONTENT:
 590       status = "MSAA (content)";
 591       color = SK_ColorCYAN;
 592       break;
 593     case GpuRasterizationStatus::OFF_CONTENT:
 594       status = "off (content)";
 595       color = SK_ColorYELLOW;
 596       break;
 597   }
 598
 599   if (status.empty())
 600     return SkRect::MakeEmpty();
 601
 602   const int kPadding = 4;
 603   const int kFontHeight = 13;
 604
 605   const int height = 2 * kFontHeight + 3 * kPadding;
 606   const int left = bounds().width() - width - right;
 607   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 608
 609   SkPaint paint = CreatePaint();
 610   DrawGraphBackground(canvas, &paint, area);
 611
 612   SkPoint gpu_status_pos = SkPoint::Make(left + width - kPadding,
 613                                          top + 2 * kFontHeight + 2 * kPadding);
 614
 615   paint.setColor(color);
 616   DrawText(canvas, &paint, "GPU raster: ", SkPaint::kLeft_Align, kFontHeight,
 617            left + kPadding, top + kFontHeight + kPadding);
 618   DrawText(canvas, &paint, status, SkPaint::kRight_Align, kFontHeight,
 619            gpu_status_pos);
 620
 621   return area;
 622 }
 623
 624 SkRect HeadsUpDisplayLayerImpl::DrawPaintTimeDisplay(
 625     SkCanvas* canvas,
 626     const PaintTimeCounter* paint_time_counter,
 627     int right,
 628     int top) const {
 629   const int kPadding = 4;
 630   const int kFontHeight = 14;
 631
 632   const int kGraphWidth =
 633       base::saturated_cast<int>(paint_time_counter->HistorySize());
 634   const int kGraphHeight = 40;
 635
 636   SkPaint paint = CreatePaint();
 637
 638   const std::string title = "Compositor frame time (ms)";
 639   int title_text_width = MeasureText(&paint, title, kFontHeight);
 640   int contents_width = std::max(title_text_width, kGraphWidth);
 641
 642   const int width = contents_width + 2 * kPadding;
 643   const int height =
 644       kFontHeight + kGraphHeight + 4 * kPadding + 2 + kFontHeight + kPadding;
 645   const int left = bounds().width() - width - right;
 646
 647   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 648
 649   DrawGraphBackground(canvas, &paint, area);
 650
 651   SkRect text_bounds = SkRect::MakeXYWH(left + kPadding, top + kPadding,
 652                                         contents_width, kFontHeight);
 653   SkRect text_bounds2 =
 654       SkRect::MakeXYWH(left + kPadding, text_bounds.bottom() + kPadding,
 655                        contents_width, kFontHeight);
 656   SkRect graph_bounds = SkRect::MakeXYWH(left + (width - kGraphWidth) / 2,
 657                                          text_bounds2.bottom() + 2 * kPadding,
 658                                          kGraphWidth, kGraphHeight);
 659
 660   const std::string value_text =
 661       base::StringPrintf("%.1f", paint_time_graph_.value);
 662   const std::string min_max_text = base::StringPrintf(
 663       "%.1f-%.1f", paint_time_graph_.min, paint_time_graph_.max);
 664
 665   paint.setColor(DebugColors::PaintTimeDisplayTextAndGraphColor());
 666   DrawText(canvas, &paint, title, SkPaint::kLeft_Align, kFontHeight,
 667            text_bounds.left(), text_bounds.bottom());
 668   DrawText(canvas,
 669            &paint,
 670            value_text,
 671            SkPaint::kLeft_Align,
 672            kFontHeight,
 673            text_bounds2.left(),
 674            text_bounds2.bottom());
 675   DrawText(canvas,
 676            &paint,
 677            min_max_text,
 678            SkPaint::kRight_Align,
 679            kFontHeight,
 680            text_bounds2.right(),
 681            text_bounds2.bottom());
 682
 683   paint.setColor(DebugColors::PaintTimeDisplayTextAndGraphColor());
 684   for (PaintTimeCounter::RingBufferType::Iterator it =
 685            paint_time_counter->End();
 686        it;
 687        --it) {
 688     double pt = it->InMillisecondsF();
 689
 690     if (pt == 0.0)
 691       continue;
 692
 693     double p = pt / paint_time_graph_.current_upper_bound;
 694     if (p > 1.0)
 695       p = 1.0;
 696
 697     canvas->drawRect(
 698         SkRect::MakeXYWH(graph_bounds.left() + it.index(),
 699                          graph_bounds.bottom() - p * graph_bounds.height(),
 700                          1,
 701                          p * graph_bounds.height()),
 702         paint);
 703   }
 704
 705   DrawGraphLines(canvas, &paint, graph_bounds, paint_time_graph_);
 706
 707   return area;
 708 }
 709
 710 void HeadsUpDisplayLayerImpl::DrawDebugRect(
 711     SkCanvas* canvas,
 712     SkPaint* paint,
 713     const DebugRect& rect,
 714     SkColor stroke_color,
 715     SkColor fill_color,
 716     float stroke_width,
 717     const std::string& label_text) const {
 718   gfx::Rect debug_layer_rect =
 719       gfx::ScaleToEnclosingRect(rect.rect, 1.0 / internal_contents_scale_,
 720                                 1.0 / internal_contents_scale_);
 721   SkIRect sk_rect = RectToSkIRect(debug_layer_rect);
 722   paint->setColor(fill_color);
 723   paint->setStyle(SkPaint::kFill_Style);
 724   canvas->drawIRect(sk_rect, *paint);
 725
 726   paint->setColor(stroke_color);
 727   paint->setStyle(SkPaint::kStroke_Style);
 728   paint->setStrokeWidth(SkFloatToScalar(stroke_width));
 729   canvas->drawIRect(sk_rect, *paint);
 730
 731   if (label_text.length()) {
 732     const int kFontHeight = 12;
 733     const int kPadding = 3;
 734
 735     // The debug_layer_rect may be huge, and converting to a floating point may
 736     // be lossy, so intersect with the HUD layer bounds first to prevent that.
 737     gfx::Rect clip_rect = debug_layer_rect;
 738     clip_rect.Intersect(gfx::Rect(internal_content_bounds_));
 739     SkRect sk_clip_rect = RectToSkRect(clip_rect);
 740
 741     canvas->save();
 742     canvas->clipRect(sk_clip_rect);
 743     canvas->translate(sk_clip_rect.x(), sk_clip_rect.y());
 744
 745     SkPaint label_paint = CreatePaint();
 746     label_paint.setTextSize(kFontHeight);
 747     label_paint.setTypeface(typeface_.get());
 748     label_paint.setColor(stroke_color);
 749
 750     const SkScalar label_text_width =
 751         label_paint.measureText(label_text.c_str(), label_text.length());
 752     canvas->drawRect(SkRect::MakeWH(label_text_width + 2 * kPadding,
 753                                     kFontHeight + 2 * kPadding),
 754                      label_paint);
 755
 756     label_paint.setAntiAlias(true);
 757     label_paint.setColor(SkColorSetARGB(255, 50, 50, 50));
 758     canvas->drawText(label_text.c_str(),
 759                      label_text.length(),
 760                      kPadding,
 761                      kFontHeight * 0.8f + kPadding,
 762                      label_paint);
 763
 764     canvas->restore();
 765   }
 766 }
 767
 768 void HeadsUpDisplayLayerImpl::DrawDebugRects(
 769     SkCanvas* canvas,
 770     DebugRectHistory* debug_rect_history) {
 771   SkPaint paint = CreatePaint();
 772
 773   const std::vector<DebugRect>& debug_rects = debug_rect_history->debug_rects();
 774   std::vector<DebugRect> new_paint_rects;
 775
 776   for (size_t i = 0; i < debug_rects.size(); ++i) {
 777     SkColor stroke_color = 0;
 778     SkColor fill_color = 0;
 779     float stroke_width = 0.f;
 780     std::string label_text;
 781
 782     switch (debug_rects[i].type) {
 783       case PAINT_RECT_TYPE:
 784         new_paint_rects.push_back(debug_rects[i]);
 785         continue;
 786       case PROPERTY_CHANGED_RECT_TYPE:
 787         stroke_color = DebugColors::PropertyChangedRectBorderColor();
 788         fill_color = DebugColors::PropertyChangedRectFillColor();
 789         stroke_width = DebugColors::PropertyChangedRectBorderWidth();
 790         break;
 791       case SURFACE_DAMAGE_RECT_TYPE:
 792         stroke_color = DebugColors::SurfaceDamageRectBorderColor();
 793         fill_color = DebugColors::SurfaceDamageRectFillColor();
 794         stroke_width = DebugColors::SurfaceDamageRectBorderWidth();
 795         break;
 796       case REPLICA_SCREEN_SPACE_RECT_TYPE:
 797         stroke_color = DebugColors::ScreenSpaceSurfaceReplicaRectBorderColor();
 798         fill_color = DebugColors::ScreenSpaceSurfaceReplicaRectFillColor();
 799         stroke_width = DebugColors::ScreenSpaceSurfaceReplicaRectBorderWidth();
 800         break;
 801       case SCREEN_SPACE_RECT_TYPE:
 802         stroke_color = DebugColors::ScreenSpaceLayerRectBorderColor();
 803         fill_color = DebugColors::ScreenSpaceLayerRectFillColor();
 804         stroke_width = DebugColors::ScreenSpaceLayerRectBorderWidth();
 805         break;
 806       case TOUCH_EVENT_HANDLER_RECT_TYPE:
 807         stroke_color = DebugColors::TouchEventHandlerRectBorderColor();
 808         fill_color = DebugColors::TouchEventHandlerRectFillColor();
 809         stroke_width = DebugColors::TouchEventHandlerRectBorderWidth();
 810         label_text = "touch event listener";
 811         break;
 812       case WHEEL_EVENT_HANDLER_RECT_TYPE:
 813         stroke_color = DebugColors::WheelEventHandlerRectBorderColor();
 814         fill_color = DebugColors::WheelEventHandlerRectFillColor();
 815         stroke_width = DebugColors::WheelEventHandlerRectBorderWidth();
 816         label_text = "mousewheel event listener";
 817         break;
 818       case SCROLL_EVENT_HANDLER_RECT_TYPE:
 819         stroke_color = DebugColors::ScrollEventHandlerRectBorderColor();
 820         fill_color = DebugColors::ScrollEventHandlerRectFillColor();
 821         stroke_width = DebugColors::ScrollEventHandlerRectBorderWidth();
 822         label_text = "scroll event listener";
 823         break;
 824       case NON_FAST_SCROLLABLE_RECT_TYPE:
 825         stroke_color = DebugColors::NonFastScrollableRectBorderColor();
 826         fill_color = DebugColors::NonFastScrollableRectFillColor();
 827         stroke_width = DebugColors::NonFastScrollableRectBorderWidth();
 828         label_text = "repaints on scroll";
 829         break;
 830       case ANIMATION_BOUNDS_RECT_TYPE:
 831         stroke_color = DebugColors::LayerAnimationBoundsBorderColor();
 832         fill_color = DebugColors::LayerAnimationBoundsFillColor();
 833         stroke_width = DebugColors::LayerAnimationBoundsBorderWidth();
 834         label_text = "animation bounds";
 835         break;
 836     }
 837
 838     DrawDebugRect(canvas,
 839                   &paint,
 840                   debug_rects[i],
 841                   stroke_color,
 842                   fill_color,
 843                   stroke_width,
 844                   label_text);
 845   }
 846
 847   if (new_paint_rects.size()) {
 848     paint_rects_.swap(new_paint_rects);
 849     fade_step_ = DebugColors::kFadeSteps;
 850   }
 851   if (fade_step_ > 0) {
 852     fade_step_--;
 853     for (size_t i = 0; i < paint_rects_.size(); ++i) {
 854       DrawDebugRect(canvas,
 855                     &paint,
 856                     paint_rects_[i],
 857                     DebugColors::PaintRectBorderColor(fade_step_),
 858                     DebugColors::PaintRectFillColor(fade_step_),
 859                     DebugColors::PaintRectBorderWidth(),
 860                     "");
 861     }
 862   }
 863 }
 864
 865 const char* HeadsUpDisplayLayerImpl::LayerTypeAsString() const {
 866   return "cc::HeadsUpDisplayLayerImpl";
 867 }
 868
 869 void HeadsUpDisplayLayerImpl::AsValueInto(
 870     base::trace_event::TracedValue* dict) const {
 871   LayerImpl::AsValueInto(dict);
 872   dict->SetString("layer_name", "Heads Up Display Layer");
 873 }
 874
 875 }  // namespace cc