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   ValidateQuadResources(quad);
 175 }
 176
 177 void HeadsUpDisplayLayerImpl::UpdateHudTexture(
 178     DrawMode draw_mode,
 179     ResourceProvider* resource_provider) {
 180   if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE || !resources_.back()->id())
 181     return;
 182
 183   SkISize canvas_size;
 184   if (hud_surface_)
 185     canvas_size = hud_surface_->getCanvas()->getDeviceSize();
 186   else
 187     canvas_size.set(0, 0);
 188
 189   if (canvas_size.width() != internal_content_bounds_.width() ||
 190       canvas_size.height() != internal_content_bounds_.height() ||
 191       !hud_surface_) {
 192     TRACE_EVENT0("cc", "ResizeHudCanvas");
 193
 194     hud_surface_ = skia::AdoptRef(SkSurface::NewRasterN32Premul(
 195         internal_content_bounds_.width(), internal_content_bounds_.height()));
 196   }
 197
 198   UpdateHudContents();
 199
 200   {
 201     TRACE_EVENT0("cc", "DrawHudContents");
 202     hud_surface_->getCanvas()->clear(SkColorSetARGB(0, 0, 0, 0));
 203     hud_surface_->getCanvas()->save();
 204     hud_surface_->getCanvas()->scale(internal_contents_scale_,
 205                                      internal_contents_scale_);
 206
 207     DrawHudContents(hud_surface_->getCanvas());
 208
 209     hud_surface_->getCanvas()->restore();
 210   }
 211
 212   TRACE_EVENT0("cc", "UploadHudTexture");
 213   SkImageInfo info;
 214   size_t row_bytes = 0;
 215   const void* pixels = hud_surface_->getCanvas()->peekPixels(&info, &row_bytes);
 216   DCHECK(pixels);
 217   DCHECK(info.colorType() == kN32_SkColorType);
 218   resource_provider->CopyToResource(resources_.back()->id(),
 219                                     static_cast<const uint8_t*>(pixels),
 220                                     internal_content_bounds_);
 221 }
 222
 223 void HeadsUpDisplayLayerImpl::ReleaseResources() {
 224   resources_.clear();
 225 }
 226
 227 gfx::Rect HeadsUpDisplayLayerImpl::GetEnclosingRectInTargetSpace() const {
 228   return GetScaledEnclosingRectInTargetSpace(internal_contents_scale_);
 229 }
 230
 231 void HeadsUpDisplayLayerImpl::UpdateHudContents() {
 232   const LayerTreeDebugState& debug_state = layer_tree_impl()->debug_state();
 233
 234   // Don't update numbers every frame so text is readable.
 235   base::TimeTicks now = layer_tree_impl()->CurrentBeginFrameArgs().frame_time;
 236   if (base::TimeDelta(now - time_of_last_graph_update_).InSecondsF() > 0.25f) {
 237     time_of_last_graph_update_ = now;
 238
 239     if (debug_state.show_fps_counter) {
 240       FrameRateCounter* fps_counter = layer_tree_impl()->frame_rate_counter();
 241       fps_graph_.value = fps_counter->GetAverageFPS();
 242       fps_counter->GetMinAndMaxFPS(&fps_graph_.min, &fps_graph_.max);
 243     }
 244
 245     if (debug_state.continuous_painting) {
 246       PaintTimeCounter* paint_time_counter =
 247           layer_tree_impl()->paint_time_counter();
 248       base::TimeDelta latest, min, max;
 249
 250       if (paint_time_counter->End())
 251         latest = **paint_time_counter->End();
 252       paint_time_counter->GetMinAndMaxPaintTime(&min, &max);
 253
 254       paint_time_graph_.value = latest.InMillisecondsF();
 255       paint_time_graph_.min = min.InMillisecondsF();
 256       paint_time_graph_.max = max.InMillisecondsF();
 257     }
 258
 259     if (debug_state.ShowMemoryStats()) {
 260       MemoryHistory* memory_history = layer_tree_impl()->memory_history();
 261       if (memory_history->End())
 262         memory_entry_ = **memory_history->End();
 263       else
 264         memory_entry_ = MemoryHistory::Entry();
 265     }
 266   }
 267
 268   fps_graph_.UpdateUpperBound();
 269   paint_time_graph_.UpdateUpperBound();
 270 }
 271
 272 void HeadsUpDisplayLayerImpl::DrawHudContents(SkCanvas* canvas) {
 273   const LayerTreeDebugState& debug_state = layer_tree_impl()->debug_state();
 274
 275   if (debug_state.ShowHudRects()) {
 276     DrawDebugRects(canvas, layer_tree_impl()->debug_rect_history());
 277     if (IsAnimatingHUDContents()) {
 278       layer_tree_impl()->SetNeedsRedraw();
 279     }
 280   }
 281
 282   SkRect area = SkRect::MakeEmpty();
 283   if (debug_state.continuous_painting) {
 284     area = DrawPaintTimeDisplay(
 285         canvas, layer_tree_impl()->paint_time_counter(), 0, 0);
 286   } else if (debug_state.show_fps_counter) {
 287     // Don't show the FPS display when continuous painting is enabled, because
 288     // it would show misleading numbers.
 289     area =
 290         DrawFPSDisplay(canvas, layer_tree_impl()->frame_rate_counter(), 0, 0);
 291   }
 292
 293   if (debug_state.show_fps_counter || debug_state.continuous_painting) {
 294     area = DrawGpuRasterizationStatus(canvas, 0, area.bottom(),
 295                                       SkMaxScalar(area.width(), 150));
 296   }
 297
 298   if (debug_state.ShowMemoryStats())
 299     DrawMemoryDisplay(canvas, 0, area.bottom(), SkMaxScalar(area.width(), 150));
 300 }
 301 int HeadsUpDisplayLayerImpl::MeasureText(SkPaint* paint,
 302                                          const std::string& text,
 303                                          int size) const {
 304   const bool anti_alias = paint->isAntiAlias();
 305   paint->setAntiAlias(true);
 306   paint->setTextSize(size);
 307   paint->setTypeface(typeface_.get());
 308   SkScalar text_width = paint->measureText(text.c_str(), text.length());
 309
 310   paint->setAntiAlias(anti_alias);
 311   return SkScalarCeilToInt(text_width);
 312 }
 313 void HeadsUpDisplayLayerImpl::DrawText(SkCanvas* canvas,
 314                                        SkPaint* paint,
 315                                        const std::string& text,
 316                                        SkPaint::Align align,
 317                                        int size,
 318                                        int x,
 319                                        int y) const {
 320   const bool anti_alias = paint->isAntiAlias();
 321   paint->setAntiAlias(true);
 322
 323   paint->setTextSize(size);
 324   paint->setTextAlign(align);
 325   paint->setTypeface(typeface_.get());
 326   canvas->drawText(text.c_str(), text.length(), x, y, *paint);
 327
 328   paint->setAntiAlias(anti_alias);
 329 }
 330
 331 void HeadsUpDisplayLayerImpl::DrawText(SkCanvas* canvas,
 332                                        SkPaint* paint,
 333                                        const std::string& text,
 334                                        SkPaint::Align align,
 335                                        int size,
 336                                        const SkPoint& pos) const {
 337   DrawText(canvas, paint, text, align, size, pos.x(), pos.y());
 338 }
 339
 340 void HeadsUpDisplayLayerImpl::DrawGraphBackground(SkCanvas* canvas,
 341                                                   SkPaint* paint,
 342                                                   const SkRect& bounds) const {
 343   paint->setColor(DebugColors::HUDBackgroundColor());
 344   canvas->drawRect(bounds, *paint);
 345 }
 346
 347 void HeadsUpDisplayLayerImpl::DrawGraphLines(SkCanvas* canvas,
 348                                              SkPaint* paint,
 349                                              const SkRect& bounds,
 350                                              const Graph& graph) const {
 351   // Draw top and bottom line.
 352   paint->setColor(DebugColors::HUDSeparatorLineColor());
 353   canvas->drawLine(bounds.left(),
 354                    bounds.top() - 1,
 355                    bounds.right(),
 356                    bounds.top() - 1,
 357                    *paint);
 358   canvas->drawLine(
 359       bounds.left(), bounds.bottom(), bounds.right(), bounds.bottom(), *paint);
 360
 361   // Draw indicator line (additive blend mode to increase contrast when drawn on
 362   // top of graph).
 363   paint->setColor(DebugColors::HUDIndicatorLineColor());
 364   paint->setXfermodeMode(SkXfermode::kPlus_Mode);
 365   const double indicator_top =
 366       bounds.height() * (1.0 - graph.indicator / graph.current_upper_bound) -
 367       1.0;
 368   canvas->drawLine(bounds.left(),
 369                    bounds.top() + indicator_top,
 370                    bounds.right(),
 371                    bounds.top() + indicator_top,
 372                    *paint);
 373   paint->setXfermode(nullptr);
 374 }
 375
 376 SkRect HeadsUpDisplayLayerImpl::DrawFPSDisplay(
 377     SkCanvas* canvas,
 378     const FrameRateCounter* fps_counter,
 379     int right,
 380     int top) const {
 381   const int kPadding = 4;
 382   const int kGap = 6;
 383
 384   const int kFontHeight = 15;
 385
 386   const int kGraphWidth = fps_counter->time_stamp_history_size() - 2;
 387   const int kGraphHeight = 40;
 388
 389   const int kHistogramWidth = 37;
 390
 391   int width = kGraphWidth + kHistogramWidth + 4 * kPadding;
 392   int height = kFontHeight + kGraphHeight + 4 * kPadding + 2;
 393   int left = bounds().width() - width - right;
 394   SkRect area = SkRect::MakeXYWH(left, top, width, height);
 395
 396   SkPaint paint = CreatePaint();
 397   DrawGraphBackground(canvas, &paint, area);
 398
 399   SkRect text_bounds =
 400       SkRect::MakeXYWH(left + kPadding,
 401                        top + kPadding,
 402                        kGraphWidth + kHistogramWidth + kGap + 2,
 403                        kFontHeight);
 404   SkRect graph_bounds = SkRect::MakeXYWH(left + kPadding,
 405                                          text_bounds.bottom() + 2 * kPadding,
 406                                          kGraphWidth,
 407                                          kGraphHeight);
 408   SkRect histogram_bounds = SkRect::MakeXYWH(graph_bounds.right() + kGap,
 409                                              graph_bounds.top(),
 410                                              kHistogramWidth,
 411                                              kGraphHeight);
 412
 413   const std::string value_text =
 414       base::StringPrintf("FPS:%5.1f", fps_graph_.value);
 415   const std::string min_max_text =
 416       base::StringPrintf("%.0f-%.0f", fps_graph_.min, fps_graph_.max);
 417
 418   VLOG(1) << value_text;
 419
 420   paint.setColor(DebugColors::FPSDisplayTextAndGraphColor());
 421   DrawText(canvas,
 422            &paint,
 423            value_text,
 424            SkPaint::kLeft_Align,
 425            kFontHeight,
 426            text_bounds.left(),
 427            text_bounds.bottom());
 428   DrawText(canvas,
 429            &paint,
 430            min_max_text,
 431            SkPaint::kRight_Align,
 432            kFontHeight,
 433            text_bounds.right(),
 434            text_bounds.bottom());
 435
 436   DrawGraphLines(canvas, &paint, graph_bounds, fps_graph_);
 437
 438   // Collect graph and histogram data.
 439   SkPath path;
 440
 441   const int kHistogramSize = 20;
 442   double histogram[kHistogramSize] = { 1.0 };
 443   double max_bucket_value = 1.0;
 444
 445   for (FrameRateCounter::RingBufferType::Iterator it = --fps_counter->end(); it;
 446        --it) {
 447     base::TimeDelta delta = fps_counter->RecentFrameInterval(it.index() + 1);
 448
 449     // Skip this particular instantaneous frame rate if it is not likely to have
 450     // been valid.
 451     if (!fps_counter->IsBadFrameInterval(delta)) {
 452       double fps = 1.0 / delta.InSecondsF();
 453
 454       // Clamp the FPS to the range we want to plot visually.
 455       double p = fps / fps_graph_.current_upper_bound;
 456       if (p > 1.0)
 457         p = 1.0;
 458
 459       // Plot this data point.
 460       SkPoint cur =
 461           SkPoint::Make(graph_bounds.left() + it.index(),
 462                         graph_bounds.bottom() - p * graph_bounds.height());
 463       if (path.isEmpty())
 464         path.moveTo(cur);
 465       else
 466         path.lineTo(cur);
 467
 468       // Use the fps value to find the right bucket in the histogram.
 469       int bucket_index = floor(p * (kHistogramSize - 1));
 470
 471       // Add the delta time to take the time spent at that fps rate into
 472       // account.
 473       histogram[bucket_index] += delta.InSecondsF();
 474       max_bucket_value = std::max(histogram[bucket_index], max_bucket_value);
 475     }
 476   }
 477
 478   // Draw FPS histogram.
 479   paint.setColor(DebugColors::HUDSeparatorLineColor());
 480   canvas->drawLine(histogram_bounds.left() - 1,
 481                    histogram_bounds.top() - 1,
 482                    histogram_bounds.left() - 1,
 483                    histogram_bounds.bottom() + 1,
 484                    paint);
 485   canvas->drawLine(histogram_bounds.right() + 1,
 486                    histogram_bounds.top() - 1,
 487                    histogram_bounds.right() + 1,
 488                    histogram_bounds.bottom() + 1,
 489                    paint);
 490
 491   paint.setColor(DebugColors::FPSDisplayTextAndGraphColor());
 492   const double bar_height = histogram_bounds.height() / kHistogramSize;
 493
 494   for (int i = kHistogramSize - 1; i >= 0; --i) {
 495     if (histogram[i] > 0) {
 496       double bar_width =
 497           histogram[i] / max_bucket_value * histogram_bounds.width();
 498       canvas->drawRect(
 499           SkRect::MakeXYWH(histogram_bounds.left(),
 500                            histogram_bounds.bottom() - (i + 1) * bar_height,
 501                            bar_width,
 502                            1),
 503           paint);
 504     }
 505   }
 506
 507   // Draw FPS graph.
 508   paint.setAntiAlias(true);
 509   paint.setStyle(SkPaint::kStroke_Style);
 510   paint.setStrokeWidth(1);
 511   canvas->drawPath(path, paint);
 512
 513   return area;
 514 }
 515
 516 SkRect HeadsUpDisplayLayerImpl::DrawMemoryDisplay(SkCanvas* canvas,
 517                                                   int right,
 518                                                   int top,
 519                                                   int width) const {
 520   if (!memory_entry_.total_bytes_used)
 521     return SkRect::MakeEmpty();
 522
 523   const int kPadding = 4;
 524   const int kFontHeight = 13;
 525
 526   const int height = 3 * kFontHeight + 4 * kPadding;
 527   const int left = bounds().width() - width - right;
 528   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 529
 530   const double kMegabyte = 1024.0 * 1024.0;
 531
 532   SkPaint paint = CreatePaint();
 533   DrawGraphBackground(canvas, &paint, area);
 534
 535   SkPoint title_pos = SkPoint::Make(left + kPadding, top + kFontHeight);
 536   SkPoint stat1_pos = SkPoint::Make(left + width - kPadding - 1,
 537                                     top + kPadding + 2 * kFontHeight);
 538   SkPoint stat2_pos = SkPoint::Make(left + width - kPadding - 1,
 539                                     top + 2 * kPadding + 3 * kFontHeight);
 540
 541   paint.setColor(DebugColors::MemoryDisplayTextColor());
 542   DrawText(canvas,
 543            &paint,
 544            "GPU memory",
 545            SkPaint::kLeft_Align,
 546            kFontHeight,
 547            title_pos);
 548
 549   std::string text = base::StringPrintf(
 550       "%6.1f MB used", memory_entry_.total_bytes_used / kMegabyte);
 551   DrawText(canvas, &paint, text, SkPaint::kRight_Align, kFontHeight, stat1_pos);
 552
 553   if (!memory_entry_.had_enough_memory)
 554     paint.setColor(SK_ColorRED);
 555   text = base::StringPrintf("%6.1f MB max ",
 556                             memory_entry_.total_budget_in_bytes / kMegabyte);
 557   DrawText(canvas, &paint, text, SkPaint::kRight_Align, kFontHeight, stat2_pos);
 558
 559   return area;
 560 }
 561
 562 SkRect HeadsUpDisplayLayerImpl::DrawGpuRasterizationStatus(SkCanvas* canvas,
 563                                                            int right,
 564                                                            int top,
 565                                                            int width) const {
 566   std::string status;
 567   SkColor color = SK_ColorRED;
 568   switch (layer_tree_impl()->GetGpuRasterizationStatus()) {
 569     case GpuRasterizationStatus::ON:
 570       status = "on";
 571       color = SK_ColorGREEN;
 572       break;
 573     case GpuRasterizationStatus::ON_FORCED:
 574       status = "on (forced)";
 575       color = SK_ColorGREEN;
 576       break;
 577     case GpuRasterizationStatus::OFF_DEVICE:
 578       status = "off (device)";
 579       color = SK_ColorRED;
 580       break;
 581     case GpuRasterizationStatus::OFF_VIEWPORT:
 582       status = "off (viewport)";
 583       color = SK_ColorYELLOW;
 584       break;
 585     case GpuRasterizationStatus::MSAA_CONTENT:
 586       status = "MSAA (content)";
 587       color = SK_ColorCYAN;
 588       break;
 589     case GpuRasterizationStatus::OFF_CONTENT:
 590       status = "off (content)";
 591       color = SK_ColorYELLOW;
 592       break;
 593   }
 594
 595   if (status.empty())
 596     return SkRect::MakeEmpty();
 597
 598   const int kPadding = 4;
 599   const int kFontHeight = 13;
 600
 601   const int height = 2 * kFontHeight + 3 * kPadding;
 602   const int left = bounds().width() - width - right;
 603   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 604
 605   SkPaint paint = CreatePaint();
 606   DrawGraphBackground(canvas, &paint, area);
 607
 608   SkPoint gpu_status_pos = SkPoint::Make(left + width - kPadding,
 609                                          top + 2 * kFontHeight + 2 * kPadding);
 610
 611   paint.setColor(color);
 612   DrawText(canvas, &paint, "GPU raster: ", SkPaint::kLeft_Align, kFontHeight,
 613            left + kPadding, top + kFontHeight + kPadding);
 614   DrawText(canvas, &paint, status, SkPaint::kRight_Align, kFontHeight,
 615            gpu_status_pos);
 616
 617   return area;
 618 }
 619
 620 SkRect HeadsUpDisplayLayerImpl::DrawPaintTimeDisplay(
 621     SkCanvas* canvas,
 622     const PaintTimeCounter* paint_time_counter,
 623     int right,
 624     int top) const {
 625   const int kPadding = 4;
 626   const int kFontHeight = 14;
 627
 628   const int kGraphWidth = paint_time_counter->HistorySize();
 629   const int kGraphHeight = 40;
 630
 631   SkPaint paint = CreatePaint();
 632
 633   const std::string title = "Compositor frame time (ms)";
 634   int title_text_width = MeasureText(&paint, title, kFontHeight);
 635   int contents_width = std::max(title_text_width, kGraphWidth);
 636
 637   const int width = contents_width + 2 * kPadding;
 638   const int height =
 639       kFontHeight + kGraphHeight + 4 * kPadding + 2 + kFontHeight + kPadding;
 640   const int left = bounds().width() - width - right;
 641
 642   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 643
 644   DrawGraphBackground(canvas, &paint, area);
 645
 646   SkRect text_bounds = SkRect::MakeXYWH(left + kPadding, top + kPadding,
 647                                         contents_width, kFontHeight);
 648   SkRect text_bounds2 =
 649       SkRect::MakeXYWH(left + kPadding, text_bounds.bottom() + kPadding,
 650                        contents_width, kFontHeight);
 651   SkRect graph_bounds = SkRect::MakeXYWH(left + (width - kGraphWidth) / 2,
 652                                          text_bounds2.bottom() + 2 * kPadding,
 653                                          kGraphWidth, kGraphHeight);
 654
 655   const std::string value_text =
 656       base::StringPrintf("%.1f", paint_time_graph_.value);
 657   const std::string min_max_text = base::StringPrintf(
 658       "%.1f-%.1f", paint_time_graph_.min, paint_time_graph_.max);
 659
 660   paint.setColor(DebugColors::PaintTimeDisplayTextAndGraphColor());
 661   DrawText(canvas, &paint, title, SkPaint::kLeft_Align, kFontHeight,
 662            text_bounds.left(), text_bounds.bottom());
 663   DrawText(canvas,
 664            &paint,
 665            value_text,
 666            SkPaint::kLeft_Align,
 667            kFontHeight,
 668            text_bounds2.left(),
 669            text_bounds2.bottom());
 670   DrawText(canvas,
 671            &paint,
 672            min_max_text,
 673            SkPaint::kRight_Align,
 674            kFontHeight,
 675            text_bounds2.right(),
 676            text_bounds2.bottom());
 677
 678   paint.setColor(DebugColors::PaintTimeDisplayTextAndGraphColor());
 679   for (PaintTimeCounter::RingBufferType::Iterator it =
 680            paint_time_counter->End();
 681        it;
 682        --it) {
 683     double pt = it->InMillisecondsF();
 684
 685     if (pt == 0.0)
 686       continue;
 687
 688     double p = pt / paint_time_graph_.current_upper_bound;
 689     if (p > 1.0)
 690       p = 1.0;
 691
 692     canvas->drawRect(
 693         SkRect::MakeXYWH(graph_bounds.left() + it.index(),
 694                          graph_bounds.bottom() - p * graph_bounds.height(),
 695                          1,
 696                          p * graph_bounds.height()),
 697         paint);
 698   }
 699
 700   DrawGraphLines(canvas, &paint, graph_bounds, paint_time_graph_);
 701
 702   return area;
 703 }
 704
 705 void HeadsUpDisplayLayerImpl::DrawDebugRect(
 706     SkCanvas* canvas,
 707     SkPaint* paint,
 708     const DebugRect& rect,
 709     SkColor stroke_color,
 710     SkColor fill_color,
 711     float stroke_width,
 712     const std::string& label_text) const {
 713   gfx::Rect debug_layer_rect =
 714       gfx::ScaleToEnclosingRect(rect.rect, 1.0 / internal_contents_scale_,
 715                                 1.0 / internal_contents_scale_);
 716   SkIRect sk_rect = RectToSkIRect(debug_layer_rect);
 717   paint->setColor(fill_color);
 718   paint->setStyle(SkPaint::kFill_Style);
 719   canvas->drawIRect(sk_rect, *paint);
 720
 721   paint->setColor(stroke_color);
 722   paint->setStyle(SkPaint::kStroke_Style);
 723   paint->setStrokeWidth(SkFloatToScalar(stroke_width));
 724   canvas->drawIRect(sk_rect, *paint);
 725
 726   if (label_text.length()) {
 727     const int kFontHeight = 12;
 728     const int kPadding = 3;
 729
 730     // The debug_layer_rect may be huge, and converting to a floating point may
 731     // be lossy, so intersect with the HUD layer bounds first to prevent that.
 732     gfx::Rect clip_rect = debug_layer_rect;
 733     clip_rect.Intersect(gfx::Rect(internal_content_bounds_));
 734     SkRect sk_clip_rect = RectToSkRect(clip_rect);
 735
 736     canvas->save();
 737     canvas->clipRect(sk_clip_rect);
 738     canvas->translate(sk_clip_rect.x(), sk_clip_rect.y());
 739
 740     SkPaint label_paint = CreatePaint();
 741     label_paint.setTextSize(kFontHeight);
 742     label_paint.setTypeface(typeface_.get());
 743     label_paint.setColor(stroke_color);
 744
 745     const SkScalar label_text_width =
 746         label_paint.measureText(label_text.c_str(), label_text.length());
 747     canvas->drawRect(SkRect::MakeWH(label_text_width + 2 * kPadding,
 748                                     kFontHeight + 2 * kPadding),
 749                      label_paint);
 750
 751     label_paint.setAntiAlias(true);
 752     label_paint.setColor(SkColorSetARGB(255, 50, 50, 50));
 753     canvas->drawText(label_text.c_str(),
 754                      label_text.length(),
 755                      kPadding,
 756                      kFontHeight * 0.8f + kPadding,
 757                      label_paint);
 758
 759     canvas->restore();
 760   }
 761 }
 762
 763 void HeadsUpDisplayLayerImpl::DrawDebugRects(
 764     SkCanvas* canvas,
 765     DebugRectHistory* debug_rect_history) {
 766   SkPaint paint = CreatePaint();
 767
 768   const std::vector<DebugRect>& debug_rects = debug_rect_history->debug_rects();
 769   std::vector<DebugRect> new_paint_rects;
 770
 771   for (size_t i = 0; i < debug_rects.size(); ++i) {
 772     SkColor stroke_color = 0;
 773     SkColor fill_color = 0;
 774     float stroke_width = 0.f;
 775     std::string label_text;
 776
 777     switch (debug_rects[i].type) {
 778       case PAINT_RECT_TYPE:
 779         new_paint_rects.push_back(debug_rects[i]);
 780         continue;
 781       case PROPERTY_CHANGED_RECT_TYPE:
 782         stroke_color = DebugColors::PropertyChangedRectBorderColor();
 783         fill_color = DebugColors::PropertyChangedRectFillColor();
 784         stroke_width = DebugColors::PropertyChangedRectBorderWidth();
 785         break;
 786       case SURFACE_DAMAGE_RECT_TYPE:
 787         stroke_color = DebugColors::SurfaceDamageRectBorderColor();
 788         fill_color = DebugColors::SurfaceDamageRectFillColor();
 789         stroke_width = DebugColors::SurfaceDamageRectBorderWidth();
 790         break;
 791       case REPLICA_SCREEN_SPACE_RECT_TYPE:
 792         stroke_color = DebugColors::ScreenSpaceSurfaceReplicaRectBorderColor();
 793         fill_color = DebugColors::ScreenSpaceSurfaceReplicaRectFillColor();
 794         stroke_width = DebugColors::ScreenSpaceSurfaceReplicaRectBorderWidth();
 795         break;
 796       case SCREEN_SPACE_RECT_TYPE:
 797         stroke_color = DebugColors::ScreenSpaceLayerRectBorderColor();
 798         fill_color = DebugColors::ScreenSpaceLayerRectFillColor();
 799         stroke_width = DebugColors::ScreenSpaceLayerRectBorderWidth();
 800         break;
 801       case TOUCH_EVENT_HANDLER_RECT_TYPE:
 802         stroke_color = DebugColors::TouchEventHandlerRectBorderColor();
 803         fill_color = DebugColors::TouchEventHandlerRectFillColor();
 804         stroke_width = DebugColors::TouchEventHandlerRectBorderWidth();
 805         label_text = "touch event listener";
 806         break;
 807       case WHEEL_EVENT_HANDLER_RECT_TYPE:
 808         stroke_color = DebugColors::WheelEventHandlerRectBorderColor();
 809         fill_color = DebugColors::WheelEventHandlerRectFillColor();
 810         stroke_width = DebugColors::WheelEventHandlerRectBorderWidth();
 811         label_text = "mousewheel event listener";
 812         break;
 813       case SCROLL_EVENT_HANDLER_RECT_TYPE:
 814         stroke_color = DebugColors::ScrollEventHandlerRectBorderColor();
 815         fill_color = DebugColors::ScrollEventHandlerRectFillColor();
 816         stroke_width = DebugColors::ScrollEventHandlerRectBorderWidth();
 817         label_text = "scroll event listener";
 818         break;
 819       case NON_FAST_SCROLLABLE_RECT_TYPE:
 820         stroke_color = DebugColors::NonFastScrollableRectBorderColor();
 821         fill_color = DebugColors::NonFastScrollableRectFillColor();
 822         stroke_width = DebugColors::NonFastScrollableRectBorderWidth();
 823         label_text = "repaints on scroll";
 824         break;
 825       case ANIMATION_BOUNDS_RECT_TYPE:
 826         stroke_color = DebugColors::LayerAnimationBoundsBorderColor();
 827         fill_color = DebugColors::LayerAnimationBoundsFillColor();
 828         stroke_width = DebugColors::LayerAnimationBoundsBorderWidth();
 829         label_text = "animation bounds";
 830         break;
 831     }
 832
 833     DrawDebugRect(canvas,
 834                   &paint,
 835                   debug_rects[i],
 836                   stroke_color,
 837                   fill_color,
 838                   stroke_width,
 839                   label_text);
 840   }
 841
 842   if (new_paint_rects.size()) {
 843     paint_rects_.swap(new_paint_rects);
 844     fade_step_ = DebugColors::kFadeSteps;
 845   }
 846   if (fade_step_ > 0) {
 847     fade_step_--;
 848     for (size_t i = 0; i < paint_rects_.size(); ++i) {
 849       DrawDebugRect(canvas,
 850                     &paint,
 851                     paint_rects_[i],
 852                     DebugColors::PaintRectBorderColor(fade_step_),
 853                     DebugColors::PaintRectFillColor(fade_step_),
 854                     DebugColors::PaintRectBorderWidth(),
 855                     "");
 856     }
 857   }
 858 }
 859
 860 const char* HeadsUpDisplayLayerImpl::LayerTypeAsString() const {
 861   return "cc::HeadsUpDisplayLayerImpl";
 862 }
 863
 864 void HeadsUpDisplayLayerImpl::AsValueInto(
 865     base::trace_event::TracedValue* dict) const {
 866   LayerImpl::AsValueInto(dict);
 867   dict->SetString("layer_name", "Heads Up Display Layer");
 868 }
 869
 870 }  // namespace cc