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/khronos/GLES2/gl2.h"
  24 #include "third_party/khronos/GLES2/gl2ext.h"
  25 #include "third_party/skia/include/core/SkBitmap.h"
  26 #include "third_party/skia/include/core/SkPaint.h"
  27 #include "third_party/skia/include/core/SkTypeface.h"
  28 #include "third_party/skia/include/effects/SkColorMatrixFilter.h"
  29 #include "ui/gfx/geometry/point.h"
  30 #include "ui/gfx/geometry/size.h"
  31 #include "ui/gfx/geometry/size_conversions.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_(skia::AdoptRef(
  74           SkTypeface::CreateFromName("monospace", SkTypeface::kBold))),
  75       internal_contents_scale_(1.f),
  76       fps_graph_(60.0, 80.0),
  77       paint_time_graph_(16.0, 48.0),
  78       fade_step_(0) {
  79 }
  80
  81 HeadsUpDisplayLayerImpl::~HeadsUpDisplayLayerImpl() {}
  82
  83 scoped_ptr<LayerImpl> HeadsUpDisplayLayerImpl::CreateLayerImpl(
  84     LayerTreeImpl* tree_impl) {
  85   return HeadsUpDisplayLayerImpl::Create(tree_impl, id());
  86 }
  87
  88 void HeadsUpDisplayLayerImpl::AcquireResource(
  89     ResourceProvider* resource_provider) {
  90   for (ScopedPtrVector<ScopedResource>::iterator it = resources_.begin();
  91        it != resources_.end();
  92        ++it) {
  93     if (!resource_provider->InUseByConsumer((*it)->id())) {
  94       resources_.swap(it, resources_.end() - 1);
  95       return;
  96     }
  97   }
  98
  99   scoped_ptr<ScopedResource> resource =
 100       ScopedResource::Create(resource_provider);
 101   resource->Allocate(internal_content_bounds_,
 102                      ResourceProvider::TEXTURE_HINT_IMMUTABLE, RGBA_8888);
 103   resources_.push_back(resource.Pass());
 104 }
 105
 106 class ResourceSizeIsEqualTo {
 107  public:
 108   explicit ResourceSizeIsEqualTo(const gfx::Size& size_)
 109       : compare_size_(size_) {}
 110
 111   bool operator()(const ScopedResource* resource) {
 112     return resource->size() == compare_size_;
 113   }
 114
 115  private:
 116   const gfx::Size compare_size_;
 117 };
 118
 119 void HeadsUpDisplayLayerImpl::ReleaseUnmatchedSizeResources(
 120     ResourceProvider* resource_provider) {
 121   ScopedPtrVector<ScopedResource>::iterator it_erase =
 122       resources_.partition(ResourceSizeIsEqualTo(internal_content_bounds_));
 123   resources_.erase(it_erase, resources_.end());
 124 }
 125
 126 bool HeadsUpDisplayLayerImpl::WillDraw(DrawMode draw_mode,
 127                                        ResourceProvider* resource_provider) {
 128   if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE)
 129     return false;
 130
 131   internal_contents_scale_ = draw_properties().ideal_contents_scale;
 132   internal_content_bounds_ =
 133       gfx::ToCeiledSize(gfx::ScaleSize(bounds(), internal_contents_scale_));
 134
 135   ReleaseUnmatchedSizeResources(resource_provider);
 136   AcquireResource(resource_provider);
 137   return LayerImpl::WillDraw(draw_mode, resource_provider);
 138 }
 139
 140 void HeadsUpDisplayLayerImpl::AppendQuads(
 141     RenderPass* render_pass,
 142     AppendQuadsData* append_quads_data) {
 143   if (!resources_.back()->id())
 144     return;
 145
 146   SharedQuadState* shared_quad_state =
 147       render_pass->CreateAndAppendSharedQuadState();
 148   PopulateScaledSharedQuadState(shared_quad_state, internal_contents_scale_);
 149
 150   gfx::Rect quad_rect(internal_content_bounds_);
 151   gfx::Rect opaque_rect(contents_opaque() ? quad_rect : gfx::Rect());
 152   gfx::Rect visible_quad_rect(quad_rect);
 153   bool premultiplied_alpha = true;
 154   gfx::PointF uv_top_left(0.f, 0.f);
 155   gfx::PointF uv_bottom_right(1.f, 1.f);
 156   const float vertex_opacity[] = { 1.f, 1.f, 1.f, 1.f };
 157   bool flipped = false;
 158   bool nearest_neighbor = false;
 159   TextureDrawQuad* quad =
 160       render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
 161   quad->SetNew(shared_quad_state,
 162                quad_rect,
 163                opaque_rect,
 164                visible_quad_rect,
 165                resources_.back()->id(),
 166                premultiplied_alpha,
 167                uv_top_left,
 168                uv_bottom_right,
 169                SK_ColorTRANSPARENT,
 170                vertex_opacity,
 171                flipped,
 172                nearest_neighbor);
 173 }
 174
 175 void HeadsUpDisplayLayerImpl::UpdateHudTexture(
 176     DrawMode draw_mode,
 177     ResourceProvider* resource_provider) {
 178   if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE || !resources_.back()->id())
 179     return;
 180
 181   SkISize canvas_size;
 182   if (hud_surface_)
 183     canvas_size = hud_surface_->getCanvas()->getDeviceSize();
 184   else
 185     canvas_size.set(0, 0);
 186
 187   if (canvas_size.width() != internal_content_bounds_.width() ||
 188       canvas_size.height() != internal_content_bounds_.height() ||
 189       !hud_surface_) {
 190     TRACE_EVENT0("cc", "ResizeHudCanvas");
 191
 192     hud_surface_ = skia::AdoptRef(SkSurface::NewRasterN32Premul(
 193         internal_content_bounds_.width(), internal_content_bounds_.height()));
 194   }
 195
 196   UpdateHudContents();
 197
 198   {
 199     TRACE_EVENT0("cc", "DrawHudContents");
 200     hud_surface_->getCanvas()->clear(SkColorSetARGB(0, 0, 0, 0));
 201     hud_surface_->getCanvas()->save();
 202     hud_surface_->getCanvas()->scale(internal_contents_scale_,
 203                                      internal_contents_scale_);
 204
 205     DrawHudContents(hud_surface_->getCanvas());
 206
 207     hud_surface_->getCanvas()->restore();
 208   }
 209
 210   TRACE_EVENT0("cc", "UploadHudTexture");
 211   SkImageInfo info;
 212   size_t row_bytes = 0;
 213   const void* pixels = hud_surface_->getCanvas()->peekPixels(&info, &row_bytes);
 214   DCHECK(pixels);
 215   DCHECK(info.colorType() == kN32_SkColorType);
 216   resource_provider->CopyToResource(resources_.back()->id(),
 217                                     static_cast<const uint8_t*>(pixels),
 218                                     internal_content_bounds_);
 219 }
 220
 221 void HeadsUpDisplayLayerImpl::ReleaseResources() {
 222   resources_.clear();
 223 }
 224
 225 void HeadsUpDisplayLayerImpl::UpdateHudContents() {
 226   const LayerTreeDebugState& debug_state = layer_tree_impl()->debug_state();
 227
 228   // Don't update numbers every frame so text is readable.
 229   base::TimeTicks now = layer_tree_impl()->CurrentBeginFrameArgs().frame_time;
 230   if (base::TimeDelta(now - time_of_last_graph_update_).InSecondsF() > 0.25f) {
 231     time_of_last_graph_update_ = now;
 232
 233     if (debug_state.show_fps_counter) {
 234       FrameRateCounter* fps_counter = layer_tree_impl()->frame_rate_counter();
 235       fps_graph_.value = fps_counter->GetAverageFPS();
 236       fps_counter->GetMinAndMaxFPS(&fps_graph_.min, &fps_graph_.max);
 237     }
 238
 239     if (debug_state.continuous_painting) {
 240       PaintTimeCounter* paint_time_counter =
 241           layer_tree_impl()->paint_time_counter();
 242       base::TimeDelta latest, min, max;
 243
 244       if (paint_time_counter->End())
 245         latest = **paint_time_counter->End();
 246       paint_time_counter->GetMinAndMaxPaintTime(&min, &max);
 247
 248       paint_time_graph_.value = latest.InMillisecondsF();
 249       paint_time_graph_.min = min.InMillisecondsF();
 250       paint_time_graph_.max = max.InMillisecondsF();
 251     }
 252
 253     if (debug_state.ShowMemoryStats()) {
 254       MemoryHistory* memory_history = layer_tree_impl()->memory_history();
 255       if (memory_history->End())
 256         memory_entry_ = **memory_history->End();
 257       else
 258         memory_entry_ = MemoryHistory::Entry();
 259     }
 260   }
 261
 262   fps_graph_.UpdateUpperBound();
 263   paint_time_graph_.UpdateUpperBound();
 264 }
 265
 266 void HeadsUpDisplayLayerImpl::DrawHudContents(SkCanvas* canvas) {
 267   const LayerTreeDebugState& debug_state = layer_tree_impl()->debug_state();
 268
 269   if (debug_state.ShowHudRects()) {
 270     DrawDebugRects(canvas, layer_tree_impl()->debug_rect_history());
 271     if (IsAnimatingHUDContents()) {
 272       layer_tree_impl()->SetNeedsRedraw();
 273     }
 274   }
 275
 276   SkRect area = SkRect::MakeEmpty();
 277   if (debug_state.continuous_painting) {
 278     area = DrawPaintTimeDisplay(
 279         canvas, layer_tree_impl()->paint_time_counter(), 0, 0);
 280   } else if (debug_state.show_fps_counter) {
 281     // Don't show the FPS display when continuous painting is enabled, because
 282     // it would show misleading numbers.
 283     area =
 284         DrawFPSDisplay(canvas, layer_tree_impl()->frame_rate_counter(), 0, 0);
 285   }
 286
 287   if (debug_state.show_fps_counter || debug_state.continuous_painting) {
 288     area = DrawGpuRasterizationStatus(canvas, 0, area.bottom(),
 289                                       SkMaxScalar(area.width(), 150));
 290   }
 291
 292   if (debug_state.ShowMemoryStats())
 293     DrawMemoryDisplay(canvas, 0, area.bottom(), SkMaxScalar(area.width(), 150));
 294 }
 295
 296 void HeadsUpDisplayLayerImpl::DrawText(SkCanvas* canvas,
 297                                        SkPaint* paint,
 298                                        const std::string& text,
 299                                        SkPaint::Align align,
 300                                        int size,
 301                                        int x,
 302                                        int y) const {
 303   const bool anti_alias = paint->isAntiAlias();
 304   paint->setAntiAlias(true);
 305
 306   paint->setTextSize(size);
 307   paint->setTextAlign(align);
 308   paint->setTypeface(typeface_.get());
 309   canvas->drawText(text.c_str(), text.length(), x, y, *paint);
 310
 311   paint->setAntiAlias(anti_alias);
 312 }
 313
 314 void HeadsUpDisplayLayerImpl::DrawText(SkCanvas* canvas,
 315                                        SkPaint* paint,
 316                                        const std::string& text,
 317                                        SkPaint::Align align,
 318                                        int size,
 319                                        const SkPoint& pos) const {
 320   DrawText(canvas, paint, text, align, size, pos.x(), pos.y());
 321 }
 322
 323 void HeadsUpDisplayLayerImpl::DrawGraphBackground(SkCanvas* canvas,
 324                                                   SkPaint* paint,
 325                                                   const SkRect& bounds) const {
 326   paint->setColor(DebugColors::HUDBackgroundColor());
 327   canvas->drawRect(bounds, *paint);
 328 }
 329
 330 void HeadsUpDisplayLayerImpl::DrawGraphLines(SkCanvas* canvas,
 331                                              SkPaint* paint,
 332                                              const SkRect& bounds,
 333                                              const Graph& graph) const {
 334   // Draw top and bottom line.
 335   paint->setColor(DebugColors::HUDSeparatorLineColor());
 336   canvas->drawLine(bounds.left(),
 337                    bounds.top() - 1,
 338                    bounds.right(),
 339                    bounds.top() - 1,
 340                    *paint);
 341   canvas->drawLine(
 342       bounds.left(), bounds.bottom(), bounds.right(), bounds.bottom(), *paint);
 343
 344   // Draw indicator line (additive blend mode to increase contrast when drawn on
 345   // top of graph).
 346   paint->setColor(DebugColors::HUDIndicatorLineColor());
 347   paint->setXfermodeMode(SkXfermode::kPlus_Mode);
 348   const double indicator_top =
 349       bounds.height() * (1.0 - graph.indicator / graph.current_upper_bound) -
 350       1.0;
 351   canvas->drawLine(bounds.left(),
 352                    bounds.top() + indicator_top,
 353                    bounds.right(),
 354                    bounds.top() + indicator_top,
 355                    *paint);
 356   paint->setXfermode(nullptr);
 357 }
 358
 359 SkRect HeadsUpDisplayLayerImpl::DrawFPSDisplay(
 360     SkCanvas* canvas,
 361     const FrameRateCounter* fps_counter,
 362     int right,
 363     int top) const {
 364   const int kPadding = 4;
 365   const int kGap = 6;
 366
 367   const int kFontHeight = 15;
 368
 369   const int kGraphWidth = fps_counter->time_stamp_history_size() - 2;
 370   const int kGraphHeight = 40;
 371
 372   const int kHistogramWidth = 37;
 373
 374   int width = kGraphWidth + kHistogramWidth + 4 * kPadding;
 375   int height = kFontHeight + kGraphHeight + 4 * kPadding + 2;
 376   int left = bounds().width() - width - right;
 377   SkRect area = SkRect::MakeXYWH(left, top, width, height);
 378
 379   SkPaint paint = CreatePaint();
 380   DrawGraphBackground(canvas, &paint, area);
 381
 382   SkRect text_bounds =
 383       SkRect::MakeXYWH(left + kPadding,
 384                        top + kPadding,
 385                        kGraphWidth + kHistogramWidth + kGap + 2,
 386                        kFontHeight);
 387   SkRect graph_bounds = SkRect::MakeXYWH(left + kPadding,
 388                                          text_bounds.bottom() + 2 * kPadding,
 389                                          kGraphWidth,
 390                                          kGraphHeight);
 391   SkRect histogram_bounds = SkRect::MakeXYWH(graph_bounds.right() + kGap,
 392                                              graph_bounds.top(),
 393                                              kHistogramWidth,
 394                                              kGraphHeight);
 395
 396   const std::string value_text =
 397       base::StringPrintf("FPS:%5.1f", fps_graph_.value);
 398   const std::string min_max_text =
 399       base::StringPrintf("%.0f-%.0f", fps_graph_.min, fps_graph_.max);
 400
 401   VLOG(1) << value_text;
 402
 403   paint.setColor(DebugColors::FPSDisplayTextAndGraphColor());
 404   DrawText(canvas,
 405            &paint,
 406            value_text,
 407            SkPaint::kLeft_Align,
 408            kFontHeight,
 409            text_bounds.left(),
 410            text_bounds.bottom());
 411   DrawText(canvas,
 412            &paint,
 413            min_max_text,
 414            SkPaint::kRight_Align,
 415            kFontHeight,
 416            text_bounds.right(),
 417            text_bounds.bottom());
 418
 419   DrawGraphLines(canvas, &paint, graph_bounds, fps_graph_);
 420
 421   // Collect graph and histogram data.
 422   SkPath path;
 423
 424   const int kHistogramSize = 20;
 425   double histogram[kHistogramSize] = { 1.0 };
 426   double max_bucket_value = 1.0;
 427
 428   for (FrameRateCounter::RingBufferType::Iterator it = --fps_counter->end(); it;
 429        --it) {
 430     base::TimeDelta delta = fps_counter->RecentFrameInterval(it.index() + 1);
 431
 432     // Skip this particular instantaneous frame rate if it is not likely to have
 433     // been valid.
 434     if (!fps_counter->IsBadFrameInterval(delta)) {
 435       double fps = 1.0 / delta.InSecondsF();
 436
 437       // Clamp the FPS to the range we want to plot visually.
 438       double p = fps / fps_graph_.current_upper_bound;
 439       if (p > 1.0)
 440         p = 1.0;
 441
 442       // Plot this data point.
 443       SkPoint cur =
 444           SkPoint::Make(graph_bounds.left() + it.index(),
 445                         graph_bounds.bottom() - p * graph_bounds.height());
 446       if (path.isEmpty())
 447         path.moveTo(cur);
 448       else
 449         path.lineTo(cur);
 450
 451       // Use the fps value to find the right bucket in the histogram.
 452       int bucket_index = floor(p * (kHistogramSize - 1));
 453
 454       // Add the delta time to take the time spent at that fps rate into
 455       // account.
 456       histogram[bucket_index] += delta.InSecondsF();
 457       max_bucket_value = std::max(histogram[bucket_index], max_bucket_value);
 458     }
 459   }
 460
 461   // Draw FPS histogram.
 462   paint.setColor(DebugColors::HUDSeparatorLineColor());
 463   canvas->drawLine(histogram_bounds.left() - 1,
 464                    histogram_bounds.top() - 1,
 465                    histogram_bounds.left() - 1,
 466                    histogram_bounds.bottom() + 1,
 467                    paint);
 468   canvas->drawLine(histogram_bounds.right() + 1,
 469                    histogram_bounds.top() - 1,
 470                    histogram_bounds.right() + 1,
 471                    histogram_bounds.bottom() + 1,
 472                    paint);
 473
 474   paint.setColor(DebugColors::FPSDisplayTextAndGraphColor());
 475   const double bar_height = histogram_bounds.height() / kHistogramSize;
 476
 477   for (int i = kHistogramSize - 1; i >= 0; --i) {
 478     if (histogram[i] > 0) {
 479       double bar_width =
 480           histogram[i] / max_bucket_value * histogram_bounds.width();
 481       canvas->drawRect(
 482           SkRect::MakeXYWH(histogram_bounds.left(),
 483                            histogram_bounds.bottom() - (i + 1) * bar_height,
 484                            bar_width,
 485                            1),
 486           paint);
 487     }
 488   }
 489
 490   // Draw FPS graph.
 491   paint.setAntiAlias(true);
 492   paint.setStyle(SkPaint::kStroke_Style);
 493   paint.setStrokeWidth(1);
 494   canvas->drawPath(path, paint);
 495
 496   return area;
 497 }
 498
 499 SkRect HeadsUpDisplayLayerImpl::DrawMemoryDisplay(SkCanvas* canvas,
 500                                                   int right,
 501                                                   int top,
 502                                                   int width) const {
 503   if (!memory_entry_.total_bytes_used)
 504     return SkRect::MakeEmpty();
 505
 506   const int kPadding = 4;
 507   const int kFontHeight = 13;
 508
 509   const int height = 3 * kFontHeight + 4 * kPadding;
 510   const int left = bounds().width() - width - right;
 511   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 512
 513   const double kMegabyte = 1024.0 * 1024.0;
 514
 515   SkPaint paint = CreatePaint();
 516   DrawGraphBackground(canvas, &paint, area);
 517
 518   SkPoint title_pos = SkPoint::Make(left + kPadding, top + kFontHeight);
 519   SkPoint stat1_pos = SkPoint::Make(left + width - kPadding - 1,
 520                                     top + kPadding + 2 * kFontHeight);
 521   SkPoint stat2_pos = SkPoint::Make(left + width - kPadding - 1,
 522                                     top + 2 * kPadding + 3 * kFontHeight);
 523
 524   paint.setColor(DebugColors::MemoryDisplayTextColor());
 525   DrawText(canvas,
 526            &paint,
 527            "GPU memory",
 528            SkPaint::kLeft_Align,
 529            kFontHeight,
 530            title_pos);
 531
 532   std::string text = base::StringPrintf(
 533       "%6.1f MB used", memory_entry_.total_bytes_used / kMegabyte);
 534   DrawText(canvas, &paint, text, SkPaint::kRight_Align, kFontHeight, stat1_pos);
 535
 536   if (!memory_entry_.had_enough_memory)
 537     paint.setColor(SK_ColorRED);
 538   text = base::StringPrintf("%6.1f MB max ",
 539                             memory_entry_.total_budget_in_bytes / kMegabyte);
 540   DrawText(canvas, &paint, text, SkPaint::kRight_Align, kFontHeight, stat2_pos);
 541
 542   return area;
 543 }
 544
 545 SkRect HeadsUpDisplayLayerImpl::DrawGpuRasterizationStatus(SkCanvas* canvas,
 546                                                            int right,
 547                                                            int top,
 548                                                            int width) const {
 549   std::string status;
 550   SkColor color = SK_ColorRED;
 551   switch (layer_tree_impl()->GetGpuRasterizationStatus()) {
 552     case GpuRasterizationStatus::ON:
 553       status = "GPU raster: on";
 554       color = SK_ColorGREEN;
 555       break;
 556     case GpuRasterizationStatus::ON_FORCED:
 557       status = "GPU raster: on (forced)";
 558       color = SK_ColorGREEN;
 559       break;
 560     case GpuRasterizationStatus::OFF_DEVICE:
 561       status = "GPU raster: off (device)";
 562       color = SK_ColorRED;
 563       break;
 564     case GpuRasterizationStatus::OFF_VIEWPORT:
 565       status = "GPU raster: off (viewport)";
 566       color = SK_ColorYELLOW;
 567       break;
 568     case GpuRasterizationStatus::OFF_CONTENT:
 569       status = "GPU raster: off (content)";
 570       color = SK_ColorYELLOW;
 571       break;
 572   }
 573
 574   if (status.empty())
 575     return SkRect::MakeEmpty();
 576
 577   const int kPadding = 4;
 578   const int kFontHeight = 13;
 579
 580   const int height = kFontHeight + 2 * kPadding;
 581   const int left = bounds().width() - width - right;
 582   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 583
 584   SkPaint paint = CreatePaint();
 585   DrawGraphBackground(canvas, &paint, area);
 586
 587   SkPoint gpu_status_pos = SkPoint::Make(left + kPadding, top + kFontHeight);
 588
 589   paint.setColor(color);
 590   DrawText(canvas, &paint, status, SkPaint::kLeft_Align, kFontHeight,
 591            gpu_status_pos);
 592
 593   return area;
 594 }
 595
 596 SkRect HeadsUpDisplayLayerImpl::DrawPaintTimeDisplay(
 597     SkCanvas* canvas,
 598     const PaintTimeCounter* paint_time_counter,
 599     int right,
 600     int top) const {
 601   const int kPadding = 4;
 602   const int kFontHeight = 15;
 603
 604   const int kGraphWidth = paint_time_counter->HistorySize();
 605   const int kGraphHeight = 40;
 606
 607   const int width = kGraphWidth + 2 * kPadding;
 608   const int height =
 609       kFontHeight + kGraphHeight + 4 * kPadding + 2 + kFontHeight + kPadding;
 610   const int left = bounds().width() - width - right;
 611
 612   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 613
 614   SkPaint paint = CreatePaint();
 615   DrawGraphBackground(canvas, &paint, area);
 616
 617   SkRect text_bounds = SkRect::MakeXYWH(
 618       left + kPadding, top + kPadding, kGraphWidth, kFontHeight);
 619   SkRect text_bounds2 = SkRect::MakeXYWH(left + kPadding,
 620                                          text_bounds.bottom() + kPadding,
 621                                          kGraphWidth,
 622                                          kFontHeight);
 623   SkRect graph_bounds = SkRect::MakeXYWH(left + kPadding,
 624                                          text_bounds2.bottom() + 2 * kPadding,
 625                                          kGraphWidth,
 626                                          kGraphHeight);
 627
 628   const std::string value_text =
 629       base::StringPrintf("%.1f", paint_time_graph_.value);
 630   const std::string min_max_text = base::StringPrintf(
 631       "%.1f-%.1f", paint_time_graph_.min, paint_time_graph_.max);
 632
 633   paint.setColor(DebugColors::PaintTimeDisplayTextAndGraphColor());
 634   DrawText(canvas, &paint, "Compositor frame time (ms)", SkPaint::kLeft_Align,
 635            kFontHeight, text_bounds.left(), text_bounds.bottom());
 636   DrawText(canvas,
 637            &paint,
 638            value_text,
 639            SkPaint::kLeft_Align,
 640            kFontHeight,
 641            text_bounds2.left(),
 642            text_bounds2.bottom());
 643   DrawText(canvas,
 644            &paint,
 645            min_max_text,
 646            SkPaint::kRight_Align,
 647            kFontHeight,
 648            text_bounds2.right(),
 649            text_bounds2.bottom());
 650
 651   paint.setColor(DebugColors::PaintTimeDisplayTextAndGraphColor());
 652   for (PaintTimeCounter::RingBufferType::Iterator it =
 653            paint_time_counter->End();
 654        it;
 655        --it) {
 656     double pt = it->InMillisecondsF();
 657
 658     if (pt == 0.0)
 659       continue;
 660
 661     double p = pt / paint_time_graph_.current_upper_bound;
 662     if (p > 1.0)
 663       p = 1.0;
 664
 665     canvas->drawRect(
 666         SkRect::MakeXYWH(graph_bounds.left() + it.index(),
 667                          graph_bounds.bottom() - p * graph_bounds.height(),
 668                          1,
 669                          p * graph_bounds.height()),
 670         paint);
 671   }
 672
 673   DrawGraphLines(canvas, &paint, graph_bounds, paint_time_graph_);
 674
 675   return area;
 676 }
 677
 678 void HeadsUpDisplayLayerImpl::DrawDebugRect(
 679     SkCanvas* canvas,
 680     SkPaint* paint,
 681     const DebugRect& rect,
 682     SkColor stroke_color,
 683     SkColor fill_color,
 684     float stroke_width,
 685     const std::string& label_text) const {
 686   gfx::Rect debug_layer_rect =
 687       gfx::ScaleToEnclosingRect(rect.rect, 1.0 / internal_contents_scale_,
 688                                 1.0 / internal_contents_scale_);
 689   SkIRect sk_rect = RectToSkIRect(debug_layer_rect);
 690   paint->setColor(fill_color);
 691   paint->setStyle(SkPaint::kFill_Style);
 692   canvas->drawIRect(sk_rect, *paint);
 693
 694   paint->setColor(stroke_color);
 695   paint->setStyle(SkPaint::kStroke_Style);
 696   paint->setStrokeWidth(SkFloatToScalar(stroke_width));
 697   canvas->drawIRect(sk_rect, *paint);
 698
 699   if (label_text.length()) {
 700     const int kFontHeight = 12;
 701     const int kPadding = 3;
 702
 703     // The debug_layer_rect may be huge, and converting to a floating point may
 704     // be lossy, so intersect with the HUD layer bounds first to prevent that.
 705     gfx::Rect clip_rect = debug_layer_rect;
 706     clip_rect.Intersect(gfx::Rect(internal_content_bounds_));
 707     SkRect sk_clip_rect = RectToSkRect(clip_rect);
 708
 709     canvas->save();
 710     canvas->clipRect(sk_clip_rect);
 711     canvas->translate(sk_clip_rect.x(), sk_clip_rect.y());
 712
 713     SkPaint label_paint = CreatePaint();
 714     label_paint.setTextSize(kFontHeight);
 715     label_paint.setTypeface(typeface_.get());
 716     label_paint.setColor(stroke_color);
 717
 718     const SkScalar label_text_width =
 719         label_paint.measureText(label_text.c_str(), label_text.length());
 720     canvas->drawRect(SkRect::MakeWH(label_text_width + 2 * kPadding,
 721                                     kFontHeight + 2 * kPadding),
 722                      label_paint);
 723
 724     label_paint.setAntiAlias(true);
 725     label_paint.setColor(SkColorSetARGB(255, 50, 50, 50));
 726     canvas->drawText(label_text.c_str(),
 727                      label_text.length(),
 728                      kPadding,
 729                      kFontHeight * 0.8f + kPadding,
 730                      label_paint);
 731
 732     canvas->restore();
 733   }
 734 }
 735
 736 void HeadsUpDisplayLayerImpl::DrawDebugRects(
 737     SkCanvas* canvas,
 738     DebugRectHistory* debug_rect_history) {
 739   SkPaint paint = CreatePaint();
 740
 741   const std::vector<DebugRect>& debug_rects = debug_rect_history->debug_rects();
 742   std::vector<DebugRect> new_paint_rects;
 743
 744   for (size_t i = 0; i < debug_rects.size(); ++i) {
 745     SkColor stroke_color = 0;
 746     SkColor fill_color = 0;
 747     float stroke_width = 0.f;
 748     std::string label_text;
 749
 750     switch (debug_rects[i].type) {
 751       case PAINT_RECT_TYPE:
 752         new_paint_rects.push_back(debug_rects[i]);
 753         continue;
 754       case PROPERTY_CHANGED_RECT_TYPE:
 755         stroke_color = DebugColors::PropertyChangedRectBorderColor();
 756         fill_color = DebugColors::PropertyChangedRectFillColor();
 757         stroke_width = DebugColors::PropertyChangedRectBorderWidth();
 758         break;
 759       case SURFACE_DAMAGE_RECT_TYPE:
 760         stroke_color = DebugColors::SurfaceDamageRectBorderColor();
 761         fill_color = DebugColors::SurfaceDamageRectFillColor();
 762         stroke_width = DebugColors::SurfaceDamageRectBorderWidth();
 763         break;
 764       case REPLICA_SCREEN_SPACE_RECT_TYPE:
 765         stroke_color = DebugColors::ScreenSpaceSurfaceReplicaRectBorderColor();
 766         fill_color = DebugColors::ScreenSpaceSurfaceReplicaRectFillColor();
 767         stroke_width = DebugColors::ScreenSpaceSurfaceReplicaRectBorderWidth();
 768         break;
 769       case SCREEN_SPACE_RECT_TYPE:
 770         stroke_color = DebugColors::ScreenSpaceLayerRectBorderColor();
 771         fill_color = DebugColors::ScreenSpaceLayerRectFillColor();
 772         stroke_width = DebugColors::ScreenSpaceLayerRectBorderWidth();
 773         break;
 774       case TOUCH_EVENT_HANDLER_RECT_TYPE:
 775         stroke_color = DebugColors::TouchEventHandlerRectBorderColor();
 776         fill_color = DebugColors::TouchEventHandlerRectFillColor();
 777         stroke_width = DebugColors::TouchEventHandlerRectBorderWidth();
 778         label_text = "touch event listener";
 779         break;
 780       case WHEEL_EVENT_HANDLER_RECT_TYPE:
 781         stroke_color = DebugColors::WheelEventHandlerRectBorderColor();
 782         fill_color = DebugColors::WheelEventHandlerRectFillColor();
 783         stroke_width = DebugColors::WheelEventHandlerRectBorderWidth();
 784         label_text = "mousewheel event listener";
 785         break;
 786       case SCROLL_EVENT_HANDLER_RECT_TYPE:
 787         stroke_color = DebugColors::ScrollEventHandlerRectBorderColor();
 788         fill_color = DebugColors::ScrollEventHandlerRectFillColor();
 789         stroke_width = DebugColors::ScrollEventHandlerRectBorderWidth();
 790         label_text = "scroll event listener";
 791         break;
 792       case NON_FAST_SCROLLABLE_RECT_TYPE:
 793         stroke_color = DebugColors::NonFastScrollableRectBorderColor();
 794         fill_color = DebugColors::NonFastScrollableRectFillColor();
 795         stroke_width = DebugColors::NonFastScrollableRectBorderWidth();
 796         label_text = "repaints on scroll";
 797         break;
 798       case ANIMATION_BOUNDS_RECT_TYPE:
 799         stroke_color = DebugColors::LayerAnimationBoundsBorderColor();
 800         fill_color = DebugColors::LayerAnimationBoundsFillColor();
 801         stroke_width = DebugColors::LayerAnimationBoundsBorderWidth();
 802         label_text = "animation bounds";
 803         break;
 804     }
 805
 806     DrawDebugRect(canvas,
 807                   &paint,
 808                   debug_rects[i],
 809                   stroke_color,
 810                   fill_color,
 811                   stroke_width,
 812                   label_text);
 813   }
 814
 815   if (new_paint_rects.size()) {
 816     paint_rects_.swap(new_paint_rects);
 817     fade_step_ = DebugColors::kFadeSteps;
 818   }
 819   if (fade_step_ > 0) {
 820     fade_step_--;
 821     for (size_t i = 0; i < paint_rects_.size(); ++i) {
 822       DrawDebugRect(canvas,
 823                     &paint,
 824                     paint_rects_[i],
 825                     DebugColors::PaintRectBorderColor(fade_step_),
 826                     DebugColors::PaintRectFillColor(fade_step_),
 827                     DebugColors::PaintRectBorderWidth(),
 828                     "");
 829     }
 830   }
 831 }
 832
 833 const char* HeadsUpDisplayLayerImpl::LayerTypeAsString() const {
 834   return "cc::HeadsUpDisplayLayerImpl";
 835 }
 836
 837 void HeadsUpDisplayLayerImpl::AsValueInto(
 838     base::trace_event::TracedValue* dict) const {
 839   LayerImpl::AsValueInto(dict);
 840   dict->SetString("layer_name", "Heads Up Display Layer");
 841 }
 842
 843 }  // namespace cc