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   quad->SetNew(shared_quad_state,
 163                quad_rect,
 164                opaque_rect,
 165                visible_quad_rect,
 166                resources_.back()->id(),
 167                premultiplied_alpha,
 168                uv_top_left,
 169                uv_bottom_right,
 170                SK_ColorTRANSPARENT,
 171                vertex_opacity,
 172                flipped,
 173                nearest_neighbor);
 174 }
 175
 176 void HeadsUpDisplayLayerImpl::UpdateHudTexture(
 177     DrawMode draw_mode,
 178     ResourceProvider* resource_provider) {
 179   if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE || !resources_.back()->id())
 180     return;
 181
 182   SkISize canvas_size;
 183   if (hud_surface_)
 184     canvas_size = hud_surface_->getCanvas()->getDeviceSize();
 185   else
 186     canvas_size.set(0, 0);
 187
 188   if (canvas_size.width() != internal_content_bounds_.width() ||
 189       canvas_size.height() != internal_content_bounds_.height() ||
 190       !hud_surface_) {
 191     TRACE_EVENT0("cc", "ResizeHudCanvas");
 192
 193     hud_surface_ = skia::AdoptRef(SkSurface::NewRasterN32Premul(
 194         internal_content_bounds_.width(), internal_content_bounds_.height()));
 195   }
 196
 197   UpdateHudContents();
 198
 199   {
 200     TRACE_EVENT0("cc", "DrawHudContents");
 201     hud_surface_->getCanvas()->clear(SkColorSetARGB(0, 0, 0, 0));
 202     hud_surface_->getCanvas()->save();
 203     hud_surface_->getCanvas()->scale(internal_contents_scale_,
 204                                      internal_contents_scale_);
 205
 206     DrawHudContents(hud_surface_->getCanvas());
 207
 208     hud_surface_->getCanvas()->restore();
 209   }
 210
 211   TRACE_EVENT0("cc", "UploadHudTexture");
 212   SkImageInfo info;
 213   size_t row_bytes = 0;
 214   const void* pixels = hud_surface_->getCanvas()->peekPixels(&info, &row_bytes);
 215   DCHECK(pixels);
 216   DCHECK(info.colorType() == kN32_SkColorType);
 217   resource_provider->CopyToResource(resources_.back()->id(),
 218                                     static_cast<const uint8_t*>(pixels),
 219                                     internal_content_bounds_);
 220 }
 221
 222 void HeadsUpDisplayLayerImpl::ReleaseResources() {
 223   resources_.clear();
 224 }
 225
 226 void HeadsUpDisplayLayerImpl::UpdateHudContents() {
 227   const LayerTreeDebugState& debug_state = layer_tree_impl()->debug_state();
 228
 229   // Don't update numbers every frame so text is readable.
 230   base::TimeTicks now = layer_tree_impl()->CurrentBeginFrameArgs().frame_time;
 231   if (base::TimeDelta(now - time_of_last_graph_update_).InSecondsF() > 0.25f) {
 232     time_of_last_graph_update_ = now;
 233
 234     if (debug_state.show_fps_counter) {
 235       FrameRateCounter* fps_counter = layer_tree_impl()->frame_rate_counter();
 236       fps_graph_.value = fps_counter->GetAverageFPS();
 237       fps_counter->GetMinAndMaxFPS(&fps_graph_.min, &fps_graph_.max);
 238     }
 239
 240     if (debug_state.continuous_painting) {
 241       PaintTimeCounter* paint_time_counter =
 242           layer_tree_impl()->paint_time_counter();
 243       base::TimeDelta latest, min, max;
 244
 245       if (paint_time_counter->End())
 246         latest = **paint_time_counter->End();
 247       paint_time_counter->GetMinAndMaxPaintTime(&min, &max);
 248
 249       paint_time_graph_.value = latest.InMillisecondsF();
 250       paint_time_graph_.min = min.InMillisecondsF();
 251       paint_time_graph_.max = max.InMillisecondsF();
 252     }
 253
 254     if (debug_state.ShowMemoryStats()) {
 255       MemoryHistory* memory_history = layer_tree_impl()->memory_history();
 256       if (memory_history->End())
 257         memory_entry_ = **memory_history->End();
 258       else
 259         memory_entry_ = MemoryHistory::Entry();
 260     }
 261   }
 262
 263   fps_graph_.UpdateUpperBound();
 264   paint_time_graph_.UpdateUpperBound();
 265 }
 266
 267 void HeadsUpDisplayLayerImpl::DrawHudContents(SkCanvas* canvas) {
 268   const LayerTreeDebugState& debug_state = layer_tree_impl()->debug_state();
 269
 270   if (debug_state.ShowHudRects()) {
 271     DrawDebugRects(canvas, layer_tree_impl()->debug_rect_history());
 272     if (IsAnimatingHUDContents()) {
 273       layer_tree_impl()->SetNeedsRedraw();
 274     }
 275   }
 276
 277   SkRect area = SkRect::MakeEmpty();
 278   if (debug_state.continuous_painting) {
 279     area = DrawPaintTimeDisplay(
 280         canvas, layer_tree_impl()->paint_time_counter(), 0, 0);
 281   } else if (debug_state.show_fps_counter) {
 282     // Don't show the FPS display when continuous painting is enabled, because
 283     // it would show misleading numbers.
 284     area =
 285         DrawFPSDisplay(canvas, layer_tree_impl()->frame_rate_counter(), 0, 0);
 286   }
 287
 288   if (debug_state.show_fps_counter || debug_state.continuous_painting) {
 289     area = DrawGpuRasterizationStatus(canvas, 0, area.bottom(),
 290                                       SkMaxScalar(area.width(), 150));
 291   }
 292
 293   if (debug_state.ShowMemoryStats())
 294     DrawMemoryDisplay(canvas, 0, area.bottom(), SkMaxScalar(area.width(), 150));
 295 }
 296
 297 void HeadsUpDisplayLayerImpl::DrawText(SkCanvas* canvas,
 298                                        SkPaint* paint,
 299                                        const std::string& text,
 300                                        SkPaint::Align align,
 301                                        int size,
 302                                        int x,
 303                                        int y) const {
 304   const bool anti_alias = paint->isAntiAlias();
 305   paint->setAntiAlias(true);
 306
 307   paint->setTextSize(size);
 308   paint->setTextAlign(align);
 309   paint->setTypeface(typeface_.get());
 310   canvas->drawText(text.c_str(), text.length(), x, y, *paint);
 311
 312   paint->setAntiAlias(anti_alias);
 313 }
 314
 315 void HeadsUpDisplayLayerImpl::DrawText(SkCanvas* canvas,
 316                                        SkPaint* paint,
 317                                        const std::string& text,
 318                                        SkPaint::Align align,
 319                                        int size,
 320                                        const SkPoint& pos) const {
 321   DrawText(canvas, paint, text, align, size, pos.x(), pos.y());
 322 }
 323
 324 void HeadsUpDisplayLayerImpl::DrawGraphBackground(SkCanvas* canvas,
 325                                                   SkPaint* paint,
 326                                                   const SkRect& bounds) const {
 327   paint->setColor(DebugColors::HUDBackgroundColor());
 328   canvas->drawRect(bounds, *paint);
 329 }
 330
 331 void HeadsUpDisplayLayerImpl::DrawGraphLines(SkCanvas* canvas,
 332                                              SkPaint* paint,
 333                                              const SkRect& bounds,
 334                                              const Graph& graph) const {
 335   // Draw top and bottom line.
 336   paint->setColor(DebugColors::HUDSeparatorLineColor());
 337   canvas->drawLine(bounds.left(),
 338                    bounds.top() - 1,
 339                    bounds.right(),
 340                    bounds.top() - 1,
 341                    *paint);
 342   canvas->drawLine(
 343       bounds.left(), bounds.bottom(), bounds.right(), bounds.bottom(), *paint);
 344
 345   // Draw indicator line (additive blend mode to increase contrast when drawn on
 346   // top of graph).
 347   paint->setColor(DebugColors::HUDIndicatorLineColor());
 348   paint->setXfermodeMode(SkXfermode::kPlus_Mode);
 349   const double indicator_top =
 350       bounds.height() * (1.0 - graph.indicator / graph.current_upper_bound) -
 351       1.0;
 352   canvas->drawLine(bounds.left(),
 353                    bounds.top() + indicator_top,
 354                    bounds.right(),
 355                    bounds.top() + indicator_top,
 356                    *paint);
 357   paint->setXfermode(nullptr);
 358 }
 359
 360 SkRect HeadsUpDisplayLayerImpl::DrawFPSDisplay(
 361     SkCanvas* canvas,
 362     const FrameRateCounter* fps_counter,
 363     int right,
 364     int top) const {
 365   const int kPadding = 4;
 366   const int kGap = 6;
 367
 368   const int kFontHeight = 15;
 369
 370   const int kGraphWidth = fps_counter->time_stamp_history_size() - 2;
 371   const int kGraphHeight = 40;
 372
 373   const int kHistogramWidth = 37;
 374
 375   int width = kGraphWidth + kHistogramWidth + 4 * kPadding;
 376   int height = kFontHeight + kGraphHeight + 4 * kPadding + 2;
 377   int left = bounds().width() - width - right;
 378   SkRect area = SkRect::MakeXYWH(left, top, width, height);
 379
 380   SkPaint paint = CreatePaint();
 381   DrawGraphBackground(canvas, &paint, area);
 382
 383   SkRect text_bounds =
 384       SkRect::MakeXYWH(left + kPadding,
 385                        top + kPadding,
 386                        kGraphWidth + kHistogramWidth + kGap + 2,
 387                        kFontHeight);
 388   SkRect graph_bounds = SkRect::MakeXYWH(left + kPadding,
 389                                          text_bounds.bottom() + 2 * kPadding,
 390                                          kGraphWidth,
 391                                          kGraphHeight);
 392   SkRect histogram_bounds = SkRect::MakeXYWH(graph_bounds.right() + kGap,
 393                                              graph_bounds.top(),
 394                                              kHistogramWidth,
 395                                              kGraphHeight);
 396
 397   const std::string value_text =
 398       base::StringPrintf("FPS:%5.1f", fps_graph_.value);
 399   const std::string min_max_text =
 400       base::StringPrintf("%.0f-%.0f", fps_graph_.min, fps_graph_.max);
 401
 402   VLOG(1) << value_text;
 403
 404   paint.setColor(DebugColors::FPSDisplayTextAndGraphColor());
 405   DrawText(canvas,
 406            &paint,
 407            value_text,
 408            SkPaint::kLeft_Align,
 409            kFontHeight,
 410            text_bounds.left(),
 411            text_bounds.bottom());
 412   DrawText(canvas,
 413            &paint,
 414            min_max_text,
 415            SkPaint::kRight_Align,
 416            kFontHeight,
 417            text_bounds.right(),
 418            text_bounds.bottom());
 419
 420   DrawGraphLines(canvas, &paint, graph_bounds, fps_graph_);
 421
 422   // Collect graph and histogram data.
 423   SkPath path;
 424
 425   const int kHistogramSize = 20;
 426   double histogram[kHistogramSize] = { 1.0 };
 427   double max_bucket_value = 1.0;
 428
 429   for (FrameRateCounter::RingBufferType::Iterator it = --fps_counter->end(); it;
 430        --it) {
 431     base::TimeDelta delta = fps_counter->RecentFrameInterval(it.index() + 1);
 432
 433     // Skip this particular instantaneous frame rate if it is not likely to have
 434     // been valid.
 435     if (!fps_counter->IsBadFrameInterval(delta)) {
 436       double fps = 1.0 / delta.InSecondsF();
 437
 438       // Clamp the FPS to the range we want to plot visually.
 439       double p = fps / fps_graph_.current_upper_bound;
 440       if (p > 1.0)
 441         p = 1.0;
 442
 443       // Plot this data point.
 444       SkPoint cur =
 445           SkPoint::Make(graph_bounds.left() + it.index(),
 446                         graph_bounds.bottom() - p * graph_bounds.height());
 447       if (path.isEmpty())
 448         path.moveTo(cur);
 449       else
 450         path.lineTo(cur);
 451
 452       // Use the fps value to find the right bucket in the histogram.
 453       int bucket_index = floor(p * (kHistogramSize - 1));
 454
 455       // Add the delta time to take the time spent at that fps rate into
 456       // account.
 457       histogram[bucket_index] += delta.InSecondsF();
 458       max_bucket_value = std::max(histogram[bucket_index], max_bucket_value);
 459     }
 460   }
 461
 462   // Draw FPS histogram.
 463   paint.setColor(DebugColors::HUDSeparatorLineColor());
 464   canvas->drawLine(histogram_bounds.left() - 1,
 465                    histogram_bounds.top() - 1,
 466                    histogram_bounds.left() - 1,
 467                    histogram_bounds.bottom() + 1,
 468                    paint);
 469   canvas->drawLine(histogram_bounds.right() + 1,
 470                    histogram_bounds.top() - 1,
 471                    histogram_bounds.right() + 1,
 472                    histogram_bounds.bottom() + 1,
 473                    paint);
 474
 475   paint.setColor(DebugColors::FPSDisplayTextAndGraphColor());
 476   const double bar_height = histogram_bounds.height() / kHistogramSize;
 477
 478   for (int i = kHistogramSize - 1; i >= 0; --i) {
 479     if (histogram[i] > 0) {
 480       double bar_width =
 481           histogram[i] / max_bucket_value * histogram_bounds.width();
 482       canvas->drawRect(
 483           SkRect::MakeXYWH(histogram_bounds.left(),
 484                            histogram_bounds.bottom() - (i + 1) * bar_height,
 485                            bar_width,
 486                            1),
 487           paint);
 488     }
 489   }
 490
 491   // Draw FPS graph.
 492   paint.setAntiAlias(true);
 493   paint.setStyle(SkPaint::kStroke_Style);
 494   paint.setStrokeWidth(1);
 495   canvas->drawPath(path, paint);
 496
 497   return area;
 498 }
 499
 500 SkRect HeadsUpDisplayLayerImpl::DrawMemoryDisplay(SkCanvas* canvas,
 501                                                   int right,
 502                                                   int top,
 503                                                   int width) const {
 504   if (!memory_entry_.total_bytes_used)
 505     return SkRect::MakeEmpty();
 506
 507   const int kPadding = 4;
 508   const int kFontHeight = 13;
 509
 510   const int height = 3 * kFontHeight + 4 * kPadding;
 511   const int left = bounds().width() - width - right;
 512   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 513
 514   const double kMegabyte = 1024.0 * 1024.0;
 515
 516   SkPaint paint = CreatePaint();
 517   DrawGraphBackground(canvas, &paint, area);
 518
 519   SkPoint title_pos = SkPoint::Make(left + kPadding, top + kFontHeight);
 520   SkPoint stat1_pos = SkPoint::Make(left + width - kPadding - 1,
 521                                     top + kPadding + 2 * kFontHeight);
 522   SkPoint stat2_pos = SkPoint::Make(left + width - kPadding - 1,
 523                                     top + 2 * kPadding + 3 * kFontHeight);
 524
 525   paint.setColor(DebugColors::MemoryDisplayTextColor());
 526   DrawText(canvas,
 527            &paint,
 528            "GPU memory",
 529            SkPaint::kLeft_Align,
 530            kFontHeight,
 531            title_pos);
 532
 533   std::string text = base::StringPrintf(
 534       "%6.1f MB used", memory_entry_.total_bytes_used / kMegabyte);
 535   DrawText(canvas, &paint, text, SkPaint::kRight_Align, kFontHeight, stat1_pos);
 536
 537   if (!memory_entry_.had_enough_memory)
 538     paint.setColor(SK_ColorRED);
 539   text = base::StringPrintf("%6.1f MB max ",
 540                             memory_entry_.total_budget_in_bytes / kMegabyte);
 541   DrawText(canvas, &paint, text, SkPaint::kRight_Align, kFontHeight, stat2_pos);
 542
 543   return area;
 544 }
 545
 546 SkRect HeadsUpDisplayLayerImpl::DrawGpuRasterizationStatus(SkCanvas* canvas,
 547                                                            int right,
 548                                                            int top,
 549                                                            int width) const {
 550   std::string status;
 551   SkColor color = SK_ColorRED;
 552   switch (layer_tree_impl()->GetGpuRasterizationStatus()) {
 553     case GpuRasterizationStatus::ON:
 554       status = "GPU raster: on";
 555       color = SK_ColorGREEN;
 556       break;
 557     case GpuRasterizationStatus::ON_FORCED:
 558       status = "GPU raster: on (forced)";
 559       color = SK_ColorGREEN;
 560       break;
 561     case GpuRasterizationStatus::OFF_DEVICE:
 562       status = "GPU raster: off (device)";
 563       color = SK_ColorRED;
 564       break;
 565     case GpuRasterizationStatus::OFF_VIEWPORT:
 566       status = "GPU raster: off (viewport)";
 567       color = SK_ColorYELLOW;
 568       break;
 569     case GpuRasterizationStatus::OFF_CONTENT:
 570       status = "GPU raster: off (content)";
 571       color = SK_ColorYELLOW;
 572       break;
 573   }
 574
 575   if (status.empty())
 576     return SkRect::MakeEmpty();
 577
 578   const int kPadding = 4;
 579   const int kFontHeight = 13;
 580
 581   const int height = kFontHeight + 2 * kPadding;
 582   const int left = bounds().width() - width - right;
 583   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 584
 585   SkPaint paint = CreatePaint();
 586   DrawGraphBackground(canvas, &paint, area);
 587
 588   SkPoint gpu_status_pos = SkPoint::Make(left + kPadding, top + kFontHeight);
 589
 590   paint.setColor(color);
 591   DrawText(canvas, &paint, status, SkPaint::kLeft_Align, kFontHeight,
 592            gpu_status_pos);
 593
 594   return area;
 595 }
 596
 597 SkRect HeadsUpDisplayLayerImpl::DrawPaintTimeDisplay(
 598     SkCanvas* canvas,
 599     const PaintTimeCounter* paint_time_counter,
 600     int right,
 601     int top) const {
 602   const int kPadding = 4;
 603   const int kFontHeight = 15;
 604
 605   const int kGraphWidth = paint_time_counter->HistorySize();
 606   const int kGraphHeight = 40;
 607
 608   const int width = kGraphWidth + 2 * kPadding;
 609   const int height =
 610       kFontHeight + kGraphHeight + 4 * kPadding + 2 + kFontHeight + kPadding;
 611   const int left = bounds().width() - width - right;
 612
 613   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 614
 615   SkPaint paint = CreatePaint();
 616   DrawGraphBackground(canvas, &paint, area);
 617
 618   SkRect text_bounds = SkRect::MakeXYWH(
 619       left + kPadding, top + kPadding, kGraphWidth, kFontHeight);
 620   SkRect text_bounds2 = SkRect::MakeXYWH(left + kPadding,
 621                                          text_bounds.bottom() + kPadding,
 622                                          kGraphWidth,
 623                                          kFontHeight);
 624   SkRect graph_bounds = SkRect::MakeXYWH(left + kPadding,
 625                                          text_bounds2.bottom() + 2 * kPadding,
 626                                          kGraphWidth,
 627                                          kGraphHeight);
 628
 629   const std::string value_text =
 630       base::StringPrintf("%.1f", paint_time_graph_.value);
 631   const std::string min_max_text = base::StringPrintf(
 632       "%.1f-%.1f", paint_time_graph_.min, paint_time_graph_.max);
 633
 634   paint.setColor(DebugColors::PaintTimeDisplayTextAndGraphColor());
 635   DrawText(canvas, &paint, "Compositor frame time (ms)", SkPaint::kLeft_Align,
 636            kFontHeight, text_bounds.left(), text_bounds.bottom());
 637   DrawText(canvas,
 638            &paint,
 639            value_text,
 640            SkPaint::kLeft_Align,
 641            kFontHeight,
 642            text_bounds2.left(),
 643            text_bounds2.bottom());
 644   DrawText(canvas,
 645            &paint,
 646            min_max_text,
 647            SkPaint::kRight_Align,
 648            kFontHeight,
 649            text_bounds2.right(),
 650            text_bounds2.bottom());
 651
 652   paint.setColor(DebugColors::PaintTimeDisplayTextAndGraphColor());
 653   for (PaintTimeCounter::RingBufferType::Iterator it =
 654            paint_time_counter->End();
 655        it;
 656        --it) {
 657     double pt = it->InMillisecondsF();
 658
 659     if (pt == 0.0)
 660       continue;
 661
 662     double p = pt / paint_time_graph_.current_upper_bound;
 663     if (p > 1.0)
 664       p = 1.0;
 665
 666     canvas->drawRect(
 667         SkRect::MakeXYWH(graph_bounds.left() + it.index(),
 668                          graph_bounds.bottom() - p * graph_bounds.height(),
 669                          1,
 670                          p * graph_bounds.height()),
 671         paint);
 672   }
 673
 674   DrawGraphLines(canvas, &paint, graph_bounds, paint_time_graph_);
 675
 676   return area;
 677 }
 678
 679 void HeadsUpDisplayLayerImpl::DrawDebugRect(
 680     SkCanvas* canvas,
 681     SkPaint* paint,
 682     const DebugRect& rect,
 683     SkColor stroke_color,
 684     SkColor fill_color,
 685     float stroke_width,
 686     const std::string& label_text) const {
 687   gfx::Rect debug_layer_rect =
 688       gfx::ScaleToEnclosingRect(rect.rect, 1.0 / internal_contents_scale_,
 689                                 1.0 / internal_contents_scale_);
 690   SkIRect sk_rect = RectToSkIRect(debug_layer_rect);
 691   paint->setColor(fill_color);
 692   paint->setStyle(SkPaint::kFill_Style);
 693   canvas->drawIRect(sk_rect, *paint);
 694
 695   paint->setColor(stroke_color);
 696   paint->setStyle(SkPaint::kStroke_Style);
 697   paint->setStrokeWidth(SkFloatToScalar(stroke_width));
 698   canvas->drawIRect(sk_rect, *paint);
 699
 700   if (label_text.length()) {
 701     const int kFontHeight = 12;
 702     const int kPadding = 3;
 703
 704     // The debug_layer_rect may be huge, and converting to a floating point may
 705     // be lossy, so intersect with the HUD layer bounds first to prevent that.
 706     gfx::Rect clip_rect = debug_layer_rect;
 707     clip_rect.Intersect(gfx::Rect(internal_content_bounds_));
 708     SkRect sk_clip_rect = RectToSkRect(clip_rect);
 709
 710     canvas->save();
 711     canvas->clipRect(sk_clip_rect);
 712     canvas->translate(sk_clip_rect.x(), sk_clip_rect.y());
 713
 714     SkPaint label_paint = CreatePaint();
 715     label_paint.setTextSize(kFontHeight);
 716     label_paint.setTypeface(typeface_.get());
 717     label_paint.setColor(stroke_color);
 718
 719     const SkScalar label_text_width =
 720         label_paint.measureText(label_text.c_str(), label_text.length());
 721     canvas->drawRect(SkRect::MakeWH(label_text_width + 2 * kPadding,
 722                                     kFontHeight + 2 * kPadding),
 723                      label_paint);
 724
 725     label_paint.setAntiAlias(true);
 726     label_paint.setColor(SkColorSetARGB(255, 50, 50, 50));
 727     canvas->drawText(label_text.c_str(),
 728                      label_text.length(),
 729                      kPadding,
 730                      kFontHeight * 0.8f + kPadding,
 731                      label_paint);
 732
 733     canvas->restore();
 734   }
 735 }
 736
 737 void HeadsUpDisplayLayerImpl::DrawDebugRects(
 738     SkCanvas* canvas,
 739     DebugRectHistory* debug_rect_history) {
 740   SkPaint paint = CreatePaint();
 741
 742   const std::vector<DebugRect>& debug_rects = debug_rect_history->debug_rects();
 743   std::vector<DebugRect> new_paint_rects;
 744
 745   for (size_t i = 0; i < debug_rects.size(); ++i) {
 746     SkColor stroke_color = 0;
 747     SkColor fill_color = 0;
 748     float stroke_width = 0.f;
 749     std::string label_text;
 750
 751     switch (debug_rects[i].type) {
 752       case PAINT_RECT_TYPE:
 753         new_paint_rects.push_back(debug_rects[i]);
 754         continue;
 755       case PROPERTY_CHANGED_RECT_TYPE:
 756         stroke_color = DebugColors::PropertyChangedRectBorderColor();
 757         fill_color = DebugColors::PropertyChangedRectFillColor();
 758         stroke_width = DebugColors::PropertyChangedRectBorderWidth();
 759         break;
 760       case SURFACE_DAMAGE_RECT_TYPE:
 761         stroke_color = DebugColors::SurfaceDamageRectBorderColor();
 762         fill_color = DebugColors::SurfaceDamageRectFillColor();
 763         stroke_width = DebugColors::SurfaceDamageRectBorderWidth();
 764         break;
 765       case REPLICA_SCREEN_SPACE_RECT_TYPE:
 766         stroke_color = DebugColors::ScreenSpaceSurfaceReplicaRectBorderColor();
 767         fill_color = DebugColors::ScreenSpaceSurfaceReplicaRectFillColor();
 768         stroke_width = DebugColors::ScreenSpaceSurfaceReplicaRectBorderWidth();
 769         break;
 770       case SCREEN_SPACE_RECT_TYPE:
 771         stroke_color = DebugColors::ScreenSpaceLayerRectBorderColor();
 772         fill_color = DebugColors::ScreenSpaceLayerRectFillColor();
 773         stroke_width = DebugColors::ScreenSpaceLayerRectBorderWidth();
 774         break;
 775       case TOUCH_EVENT_HANDLER_RECT_TYPE:
 776         stroke_color = DebugColors::TouchEventHandlerRectBorderColor();
 777         fill_color = DebugColors::TouchEventHandlerRectFillColor();
 778         stroke_width = DebugColors::TouchEventHandlerRectBorderWidth();
 779         label_text = "touch event listener";
 780         break;
 781       case WHEEL_EVENT_HANDLER_RECT_TYPE:
 782         stroke_color = DebugColors::WheelEventHandlerRectBorderColor();
 783         fill_color = DebugColors::WheelEventHandlerRectFillColor();
 784         stroke_width = DebugColors::WheelEventHandlerRectBorderWidth();
 785         label_text = "mousewheel event listener";
 786         break;
 787       case SCROLL_EVENT_HANDLER_RECT_TYPE:
 788         stroke_color = DebugColors::ScrollEventHandlerRectBorderColor();
 789         fill_color = DebugColors::ScrollEventHandlerRectFillColor();
 790         stroke_width = DebugColors::ScrollEventHandlerRectBorderWidth();
 791         label_text = "scroll event listener";
 792         break;
 793       case NON_FAST_SCROLLABLE_RECT_TYPE:
 794         stroke_color = DebugColors::NonFastScrollableRectBorderColor();
 795         fill_color = DebugColors::NonFastScrollableRectFillColor();
 796         stroke_width = DebugColors::NonFastScrollableRectBorderWidth();
 797         label_text = "repaints on scroll";
 798         break;
 799       case ANIMATION_BOUNDS_RECT_TYPE:
 800         stroke_color = DebugColors::LayerAnimationBoundsBorderColor();
 801         fill_color = DebugColors::LayerAnimationBoundsFillColor();
 802         stroke_width = DebugColors::LayerAnimationBoundsBorderWidth();
 803         label_text = "animation bounds";
 804         break;
 805     }
 806
 807     DrawDebugRect(canvas,
 808                   &paint,
 809                   debug_rects[i],
 810                   stroke_color,
 811                   fill_color,
 812                   stroke_width,
 813                   label_text);
 814   }
 815
 816   if (new_paint_rects.size()) {
 817     paint_rects_.swap(new_paint_rects);
 818     fade_step_ = DebugColors::kFadeSteps;
 819   }
 820   if (fade_step_ > 0) {
 821     fade_step_--;
 822     for (size_t i = 0; i < paint_rects_.size(); ++i) {
 823       DrawDebugRect(canvas,
 824                     &paint,
 825                     paint_rects_[i],
 826                     DebugColors::PaintRectBorderColor(fade_step_),
 827                     DebugColors::PaintRectFillColor(fade_step_),
 828                     DebugColors::PaintRectBorderWidth(),
 829                     "");
 830     }
 831   }
 832 }
 833
 834 const char* HeadsUpDisplayLayerImpl::LayerTypeAsString() const {
 835   return "cc::HeadsUpDisplayLayerImpl";
 836 }
 837
 838 void HeadsUpDisplayLayerImpl::AsValueInto(
 839     base::trace_event::TracedValue* dict) const {
 840   LayerImpl::AsValueInto(dict);
 841   dict->SetString("layer_name", "Heads Up Display Layer");
 842 }
 843
 844 }  // namespace cc