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 "cc/debug/debug_colors.h"
  12 #include "cc/debug/frame_rate_counter.h"
  13 #include "cc/debug/paint_time_counter.h"
  14 #include "cc/debug/traced_value.h"
  15 #include "cc/output/renderer.h"
  16 #include "cc/quads/texture_draw_quad.h"
  17 #include "cc/resources/memory_history.h"
  18 #include "cc/trees/layer_tree_impl.h"
  19 #include "skia/ext/platform_canvas.h"
  20 #include "third_party/khronos/GLES2/gl2.h"
  21 #include "third_party/khronos/GLES2/gl2ext.h"
  22 #include "third_party/skia/include/core/SkBitmap.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/point.h"
  27 #include "ui/gfx/size.h"
  28
  29 namespace cc {
  30
  31 static inline SkPaint CreatePaint() {
  32   SkPaint paint;
  33 #if (SK_R32_SHIFT || SK_B32_SHIFT != 16)
  34   // The SkCanvas is in RGBA but the shader is expecting BGRA, so we need to
  35   // swizzle our colors when drawing to the SkCanvas.
  36   SkColorMatrix swizzle_matrix;
  37   for (int i = 0; i < 20; ++i)
  38     swizzle_matrix.fMat[i] = 0;
  39   swizzle_matrix.fMat[0 + 5 * 2] = 1;
  40   swizzle_matrix.fMat[1 + 5 * 1] = 1;
  41   swizzle_matrix.fMat[2 + 5 * 0] = 1;
  42   swizzle_matrix.fMat[3 + 5 * 3] = 1;
  43
  44   skia::RefPtr<SkColorMatrixFilter> filter =
  45       skia::AdoptRef(SkColorMatrixFilter::Create(swizzle_matrix));
  46   paint.setColorFilter(filter.get());
  47 #endif
  48   return paint;
  49 }
  50
  51 HeadsUpDisplayLayerImpl::Graph::Graph(double indicator_value,
  52                                       double start_upper_bound)
  53     : value(0.0),
  54       min(0.0),
  55       max(0.0),
  56       current_upper_bound(start_upper_bound),
  57       default_upper_bound(start_upper_bound),
  58       indicator(indicator_value) {}
  59
  60 double HeadsUpDisplayLayerImpl::Graph::UpdateUpperBound() {
  61   double target_upper_bound = std::max(max, default_upper_bound);
  62   current_upper_bound += (target_upper_bound - current_upper_bound) * 0.5;
  63   return current_upper_bound;
  64 }
  65
  66 HeadsUpDisplayLayerImpl::HeadsUpDisplayLayerImpl(LayerTreeImpl* tree_impl,
  67                                                  int id)
  68     : LayerImpl(tree_impl, id),
  69       typeface_(skia::AdoptRef(
  70           SkTypeface::CreateFromName("monospace", SkTypeface::kBold))),
  71       fps_graph_(60.0, 80.0),
  72       paint_time_graph_(16.0, 48.0),
  73       fade_step_(0) {}
  74
  75 HeadsUpDisplayLayerImpl::~HeadsUpDisplayLayerImpl() {}
  76
  77 scoped_ptr<LayerImpl> HeadsUpDisplayLayerImpl::CreateLayerImpl(
  78     LayerTreeImpl* tree_impl) {
  79   return HeadsUpDisplayLayerImpl::Create(tree_impl, id()).PassAs<LayerImpl>();
  80 }
  81
  82 bool HeadsUpDisplayLayerImpl::WillDraw(DrawMode draw_mode,
  83                                        ResourceProvider* resource_provider) {
  84   if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE)
  85     return false;
  86
  87   if (!hud_resource_)
  88     hud_resource_ = ScopedResource::Create(resource_provider);
  89
  90   // TODO(danakj): The HUD could swap between two textures instead of creating a
  91   // texture every frame in ubercompositor.
  92   if (hud_resource_->size() != content_bounds() ||
  93       (hud_resource_->id() &&
  94        resource_provider->InUseByConsumer(hud_resource_->id()))) {
  95     hud_resource_->Free();
  96   }
  97
  98   if (!hud_resource_->id()) {
  99     hud_resource_->Allocate(content_bounds(),
 100                             ResourceProvider::TextureUsageAny,
 101                             RGBA_8888);
 102   }
 103
 104   return LayerImpl::WillDraw(draw_mode, resource_provider);
 105 }
 106
 107 void HeadsUpDisplayLayerImpl::AppendQuads(
 108     RenderPass* render_pass,
 109     const OcclusionTracker<LayerImpl>& occlusion_tracker,
 110     AppendQuadsData* append_quads_data) {
 111   if (!hud_resource_->id())
 112     return;
 113
 114   SharedQuadState* shared_quad_state =
 115       render_pass->CreateAndAppendSharedQuadState();
 116   PopulateSharedQuadState(shared_quad_state);
 117
 118   gfx::Rect quad_rect(content_bounds());
 119   gfx::Rect opaque_rect(contents_opaque() ? quad_rect : gfx::Rect());
 120   gfx::Rect visible_quad_rect(quad_rect);
 121   bool premultiplied_alpha = true;
 122   gfx::PointF uv_top_left(0.f, 0.f);
 123   gfx::PointF uv_bottom_right(1.f, 1.f);
 124   const float vertex_opacity[] = { 1.f, 1.f, 1.f, 1.f };
 125   bool flipped = false;
 126   TextureDrawQuad* quad =
 127       render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
 128   quad->SetNew(shared_quad_state,
 129                quad_rect,
 130                opaque_rect,
 131                visible_quad_rect,
 132                hud_resource_->id(),
 133                premultiplied_alpha,
 134                uv_top_left,
 135                uv_bottom_right,
 136                SK_ColorTRANSPARENT,
 137                vertex_opacity,
 138                flipped);
 139 }
 140
 141 void HeadsUpDisplayLayerImpl::UpdateHudTexture(
 142     DrawMode draw_mode,
 143     ResourceProvider* resource_provider) {
 144   if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE || !hud_resource_->id())
 145     return;
 146
 147   SkISize canvas_size;
 148   if (hud_canvas_)
 149     canvas_size = hud_canvas_->getDeviceSize();
 150   else
 151     canvas_size.set(0, 0);
 152
 153   if (canvas_size.width() != content_bounds().width() ||
 154       canvas_size.height() != content_bounds().height() || !hud_canvas_) {
 155     TRACE_EVENT0("cc", "ResizeHudCanvas");
 156     bool opaque = false;
 157     hud_canvas_ = make_scoped_ptr(skia::CreateBitmapCanvas(
 158         content_bounds().width(), content_bounds().height(), opaque));
 159   }
 160
 161   UpdateHudContents();
 162
 163   {
 164     TRACE_EVENT0("cc", "DrawHudContents");
 165     hud_canvas_->clear(SkColorSetARGB(0, 0, 0, 0));
 166     hud_canvas_->save();
 167     hud_canvas_->scale(contents_scale_x(), contents_scale_y());
 168
 169     DrawHudContents(hud_canvas_.get());
 170
 171     hud_canvas_->restore();
 172   }
 173
 174   TRACE_EVENT0("cc", "UploadHudTexture");
 175   SkImageInfo info;
 176   size_t row_bytes = 0;
 177   const void* pixels = hud_canvas_->peekPixels(&info, &row_bytes);
 178   DCHECK(pixels);
 179   gfx::Rect content_rect(content_bounds());
 180   DCHECK(info.colorType() == kN32_SkColorType);
 181   resource_provider->SetPixels(hud_resource_->id(),
 182                                static_cast<const uint8_t*>(pixels),
 183                                content_rect,
 184                                content_rect,
 185                                gfx::Vector2d());
 186 }
 187
 188 void HeadsUpDisplayLayerImpl::ReleaseResources() { hud_resource_.reset(); }
 189
 190 void HeadsUpDisplayLayerImpl::UpdateHudContents() {
 191   const LayerTreeDebugState& debug_state = layer_tree_impl()->debug_state();
 192
 193   // Don't update numbers every frame so text is readable.
 194   base::TimeTicks now = layer_tree_impl()->CurrentFrameTimeTicks();
 195   if (base::TimeDelta(now - time_of_last_graph_update_).InSecondsF() > 0.25f) {
 196     time_of_last_graph_update_ = now;
 197
 198     if (debug_state.show_fps_counter) {
 199       FrameRateCounter* fps_counter = layer_tree_impl()->frame_rate_counter();
 200       fps_graph_.value = fps_counter->GetAverageFPS();
 201       fps_counter->GetMinAndMaxFPS(&fps_graph_.min, &fps_graph_.max);
 202     }
 203
 204     if (debug_state.continuous_painting) {
 205       PaintTimeCounter* paint_time_counter =
 206           layer_tree_impl()->paint_time_counter();
 207       base::TimeDelta latest, min, max;
 208
 209       if (paint_time_counter->End())
 210         latest = **paint_time_counter->End();
 211       paint_time_counter->GetMinAndMaxPaintTime(&min, &max);
 212
 213       paint_time_graph_.value = latest.InMillisecondsF();
 214       paint_time_graph_.min = min.InMillisecondsF();
 215       paint_time_graph_.max = max.InMillisecondsF();
 216     }
 217
 218     if (debug_state.ShowMemoryStats()) {
 219       MemoryHistory* memory_history = layer_tree_impl()->memory_history();
 220       if (memory_history->End())
 221         memory_entry_ = **memory_history->End();
 222       else
 223         memory_entry_ = MemoryHistory::Entry();
 224     }
 225   }
 226
 227   fps_graph_.UpdateUpperBound();
 228   paint_time_graph_.UpdateUpperBound();
 229 }
 230
 231 void HeadsUpDisplayLayerImpl::DrawHudContents(SkCanvas* canvas) {
 232   const LayerTreeDebugState& debug_state = layer_tree_impl()->debug_state();
 233
 234   if (debug_state.ShowHudRects()) {
 235     DrawDebugRects(canvas, layer_tree_impl()->debug_rect_history());
 236     if (IsAnimatingHUDContents()) {
 237       layer_tree_impl()->SetNeedsRedraw();
 238     }
 239   }
 240
 241   SkRect area = SkRect::MakeEmpty();
 242   if (debug_state.continuous_painting) {
 243     area = DrawPaintTimeDisplay(
 244         canvas, layer_tree_impl()->paint_time_counter(), 0, 0);
 245   } else if (debug_state.show_fps_counter) {
 246     // Don't show the FPS display when continuous painting is enabled, because
 247     // it would show misleading numbers.
 248     area =
 249         DrawFPSDisplay(canvas, layer_tree_impl()->frame_rate_counter(), 0, 0);
 250   }
 251
 252   if (debug_state.ShowMemoryStats())
 253     DrawMemoryDisplay(canvas, 0, area.bottom(), SkMaxScalar(area.width(), 150));
 254 }
 255
 256 void HeadsUpDisplayLayerImpl::DrawText(SkCanvas* canvas,
 257                                        SkPaint* paint,
 258                                        const std::string& text,
 259                                        SkPaint::Align align,
 260                                        int size,
 261                                        int x,
 262                                        int y) const {
 263   const bool anti_alias = paint->isAntiAlias();
 264   paint->setAntiAlias(true);
 265
 266   paint->setTextSize(size);
 267   paint->setTextAlign(align);
 268   paint->setTypeface(typeface_.get());
 269   canvas->drawText(text.c_str(), text.length(), x, y, *paint);
 270
 271   paint->setAntiAlias(anti_alias);
 272 }
 273
 274 void HeadsUpDisplayLayerImpl::DrawText(SkCanvas* canvas,
 275                                        SkPaint* paint,
 276                                        const std::string& text,
 277                                        SkPaint::Align align,
 278                                        int size,
 279                                        const SkPoint& pos) const {
 280   DrawText(canvas, paint, text, align, size, pos.x(), pos.y());
 281 }
 282
 283 void HeadsUpDisplayLayerImpl::DrawGraphBackground(SkCanvas* canvas,
 284                                                   SkPaint* paint,
 285                                                   const SkRect& bounds) const {
 286   paint->setColor(DebugColors::HUDBackgroundColor());
 287   canvas->drawRect(bounds, *paint);
 288 }
 289
 290 void HeadsUpDisplayLayerImpl::DrawGraphLines(SkCanvas* canvas,
 291                                              SkPaint* paint,
 292                                              const SkRect& bounds,
 293                                              const Graph& graph) const {
 294   // Draw top and bottom line.
 295   paint->setColor(DebugColors::HUDSeparatorLineColor());
 296   canvas->drawLine(bounds.left(),
 297                    bounds.top() - 1,
 298                    bounds.right(),
 299                    bounds.top() - 1,
 300                    *paint);
 301   canvas->drawLine(
 302       bounds.left(), bounds.bottom(), bounds.right(), bounds.bottom(), *paint);
 303
 304   // Draw indicator line (additive blend mode to increase contrast when drawn on
 305   // top of graph).
 306   paint->setColor(DebugColors::HUDIndicatorLineColor());
 307   paint->setXfermodeMode(SkXfermode::kPlus_Mode);
 308   const double indicator_top =
 309       bounds.height() * (1.0 - graph.indicator / graph.current_upper_bound) -
 310       1.0;
 311   canvas->drawLine(bounds.left(),
 312                    bounds.top() + indicator_top,
 313                    bounds.right(),
 314                    bounds.top() + indicator_top,
 315                    *paint);
 316   paint->setXfermode(NULL);
 317 }
 318
 319 SkRect HeadsUpDisplayLayerImpl::DrawFPSDisplay(
 320     SkCanvas* canvas,
 321     const FrameRateCounter* fps_counter,
 322     int right,
 323     int top) const {
 324   const int kPadding = 4;
 325   const int kGap = 6;
 326
 327   const int kFontHeight = 15;
 328
 329   const int kGraphWidth = fps_counter->time_stamp_history_size() - 2;
 330   const int kGraphHeight = 40;
 331
 332   const int kHistogramWidth = 37;
 333
 334   int width = kGraphWidth + kHistogramWidth + 4 * kPadding;
 335   int height = kFontHeight + kGraphHeight + 4 * kPadding + 2;
 336   int left = bounds().width() - width - right;
 337   SkRect area = SkRect::MakeXYWH(left, top, width, height);
 338
 339   SkPaint paint = CreatePaint();
 340   DrawGraphBackground(canvas, &paint, area);
 341
 342   SkRect text_bounds =
 343       SkRect::MakeXYWH(left + kPadding,
 344                        top + kPadding,
 345                        kGraphWidth + kHistogramWidth + kGap + 2,
 346                        kFontHeight);
 347   SkRect graph_bounds = SkRect::MakeXYWH(left + kPadding,
 348                                          text_bounds.bottom() + 2 * kPadding,
 349                                          kGraphWidth,
 350                                          kGraphHeight);
 351   SkRect histogram_bounds = SkRect::MakeXYWH(graph_bounds.right() + kGap,
 352                                              graph_bounds.top(),
 353                                              kHistogramWidth,
 354                                              kGraphHeight);
 355
 356   const std::string value_text =
 357       base::StringPrintf("FPS:%5.1f", fps_graph_.value);
 358   const std::string min_max_text =
 359       base::StringPrintf("%.0f-%.0f", fps_graph_.min, fps_graph_.max);
 360
 361   paint.setColor(DebugColors::FPSDisplayTextAndGraphColor());
 362   DrawText(canvas,
 363            &paint,
 364            value_text,
 365            SkPaint::kLeft_Align,
 366            kFontHeight,
 367            text_bounds.left(),
 368            text_bounds.bottom());
 369   DrawText(canvas,
 370            &paint,
 371            min_max_text,
 372            SkPaint::kRight_Align,
 373            kFontHeight,
 374            text_bounds.right(),
 375            text_bounds.bottom());
 376
 377   DrawGraphLines(canvas, &paint, graph_bounds, fps_graph_);
 378
 379   // Collect graph and histogram data.
 380   SkPath path;
 381
 382   const int kHistogramSize = 20;
 383   double histogram[kHistogramSize] = { 1.0 };
 384   double max_bucket_value = 1.0;
 385
 386   for (FrameRateCounter::RingBufferType::Iterator it = --fps_counter->end(); it;
 387        --it) {
 388     base::TimeDelta delta = fps_counter->RecentFrameInterval(it.index() + 1);
 389
 390     // Skip this particular instantaneous frame rate if it is not likely to have
 391     // been valid.
 392     if (!fps_counter->IsBadFrameInterval(delta)) {
 393       double fps = 1.0 / delta.InSecondsF();
 394
 395       // Clamp the FPS to the range we want to plot visually.
 396       double p = fps / fps_graph_.current_upper_bound;
 397       if (p > 1.0)
 398         p = 1.0;
 399
 400       // Plot this data point.
 401       SkPoint cur =
 402           SkPoint::Make(graph_bounds.left() + it.index(),
 403                         graph_bounds.bottom() - p * graph_bounds.height());
 404       if (path.isEmpty())
 405         path.moveTo(cur);
 406       else
 407         path.lineTo(cur);
 408
 409       // Use the fps value to find the right bucket in the histogram.
 410       int bucket_index = floor(p * (kHistogramSize - 1));
 411
 412       // Add the delta time to take the time spent at that fps rate into
 413       // account.
 414       histogram[bucket_index] += delta.InSecondsF();
 415       max_bucket_value = std::max(histogram[bucket_index], max_bucket_value);
 416     }
 417   }
 418
 419   // Draw FPS histogram.
 420   paint.setColor(DebugColors::HUDSeparatorLineColor());
 421   canvas->drawLine(histogram_bounds.left() - 1,
 422                    histogram_bounds.top() - 1,
 423                    histogram_bounds.left() - 1,
 424                    histogram_bounds.bottom() + 1,
 425                    paint);
 426   canvas->drawLine(histogram_bounds.right() + 1,
 427                    histogram_bounds.top() - 1,
 428                    histogram_bounds.right() + 1,
 429                    histogram_bounds.bottom() + 1,
 430                    paint);
 431
 432   paint.setColor(DebugColors::FPSDisplayTextAndGraphColor());
 433   const double bar_height = histogram_bounds.height() / kHistogramSize;
 434
 435   for (int i = kHistogramSize - 1; i >= 0; --i) {
 436     if (histogram[i] > 0) {
 437       double bar_width =
 438           histogram[i] / max_bucket_value * histogram_bounds.width();
 439       canvas->drawRect(
 440           SkRect::MakeXYWH(histogram_bounds.left(),
 441                            histogram_bounds.bottom() - (i + 1) * bar_height,
 442                            bar_width,
 443                            1),
 444           paint);
 445     }
 446   }
 447
 448   // Draw FPS graph.
 449   paint.setAntiAlias(true);
 450   paint.setStyle(SkPaint::kStroke_Style);
 451   paint.setStrokeWidth(1);
 452   canvas->drawPath(path, paint);
 453
 454   return area;
 455 }
 456
 457 SkRect HeadsUpDisplayLayerImpl::DrawMemoryDisplay(SkCanvas* canvas,
 458                                                   int right,
 459                                                   int top,
 460                                                   int width) const {
 461   if (!memory_entry_.bytes_total())
 462     return SkRect::MakeEmpty();
 463
 464   const int kPadding = 4;
 465   const int kFontHeight = 13;
 466
 467   const int height = 3 * kFontHeight + 4 * kPadding;
 468   const int left = bounds().width() - width - right;
 469   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 470
 471   const double megabyte = 1024.0 * 1024.0;
 472
 473   SkPaint paint = CreatePaint();
 474   DrawGraphBackground(canvas, &paint, area);
 475
 476   SkPoint title_pos = SkPoint::Make(left + kPadding, top + kFontHeight);
 477   SkPoint stat1_pos = SkPoint::Make(left + width - kPadding - 1,
 478                                     top + kPadding + 2 * kFontHeight);
 479   SkPoint stat2_pos = SkPoint::Make(left + width - kPadding - 1,
 480                                     top + 2 * kPadding + 3 * kFontHeight);
 481
 482   paint.setColor(DebugColors::MemoryDisplayTextColor());
 483   DrawText(canvas,
 484            &paint,
 485            "GPU memory",
 486            SkPaint::kLeft_Align,
 487            kFontHeight,
 488            title_pos);
 489
 490   std::string text =
 491       base::StringPrintf("%6.1f MB used",
 492                          (memory_entry_.bytes_unreleasable +
 493                           memory_entry_.bytes_allocated) / megabyte);
 494   DrawText(canvas, &paint, text, SkPaint::kRight_Align, kFontHeight, stat1_pos);
 495
 496   if (memory_entry_.bytes_over) {
 497     paint.setColor(SK_ColorRED);
 498     text = base::StringPrintf("%6.1f MB over",
 499                               memory_entry_.bytes_over / megabyte);
 500   } else {
 501     text = base::StringPrintf("%6.1f MB max ",
 502                               memory_entry_.total_budget_in_bytes / megabyte);
 503   }
 504   DrawText(canvas, &paint, text, SkPaint::kRight_Align, kFontHeight, stat2_pos);
 505
 506   return area;
 507 }
 508
 509 SkRect HeadsUpDisplayLayerImpl::DrawPaintTimeDisplay(
 510     SkCanvas* canvas,
 511     const PaintTimeCounter* paint_time_counter,
 512     int right,
 513     int top) const {
 514   const int kPadding = 4;
 515   const int kFontHeight = 15;
 516
 517   const int kGraphWidth = paint_time_counter->HistorySize();
 518   const int kGraphHeight = 40;
 519
 520   const int width = kGraphWidth + 2 * kPadding;
 521   const int height =
 522       kFontHeight + kGraphHeight + 4 * kPadding + 2 + kFontHeight + kPadding;
 523   const int left = bounds().width() - width - right;
 524
 525   const SkRect area = SkRect::MakeXYWH(left, top, width, height);
 526
 527   SkPaint paint = CreatePaint();
 528   DrawGraphBackground(canvas, &paint, area);
 529
 530   SkRect text_bounds = SkRect::MakeXYWH(
 531       left + kPadding, top + kPadding, kGraphWidth, kFontHeight);
 532   SkRect text_bounds2 = SkRect::MakeXYWH(left + kPadding,
 533                                          text_bounds.bottom() + kPadding,
 534                                          kGraphWidth,
 535                                          kFontHeight);
 536   SkRect graph_bounds = SkRect::MakeXYWH(left + kPadding,
 537                                          text_bounds2.bottom() + 2 * kPadding,
 538                                          kGraphWidth,
 539                                          kGraphHeight);
 540
 541   const std::string value_text =
 542       base::StringPrintf("%.1f", paint_time_graph_.value);
 543   const std::string min_max_text = base::StringPrintf(
 544       "%.1f-%.1f", paint_time_graph_.min, paint_time_graph_.max);
 545
 546   paint.setColor(DebugColors::PaintTimeDisplayTextAndGraphColor());
 547   DrawText(canvas,
 548            &paint,
 549            "Page paint time (ms)",
 550            SkPaint::kLeft_Align,
 551            kFontHeight,
 552            text_bounds.left(),
 553            text_bounds.bottom());
 554   DrawText(canvas,
 555            &paint,
 556            value_text,
 557            SkPaint::kLeft_Align,
 558            kFontHeight,
 559            text_bounds2.left(),
 560            text_bounds2.bottom());
 561   DrawText(canvas,
 562            &paint,
 563            min_max_text,
 564            SkPaint::kRight_Align,
 565            kFontHeight,
 566            text_bounds2.right(),
 567            text_bounds2.bottom());
 568
 569   paint.setColor(DebugColors::PaintTimeDisplayTextAndGraphColor());
 570   for (PaintTimeCounter::RingBufferType::Iterator it =
 571            paint_time_counter->End();
 572        it;
 573        --it) {
 574     double pt = it->InMillisecondsF();
 575
 576     if (pt == 0.0)
 577       continue;
 578
 579     double p = pt / paint_time_graph_.current_upper_bound;
 580     if (p > 1.0)
 581       p = 1.0;
 582
 583     canvas->drawRect(
 584         SkRect::MakeXYWH(graph_bounds.left() + it.index(),
 585                          graph_bounds.bottom() - p * graph_bounds.height(),
 586                          1,
 587                          p * graph_bounds.height()),
 588         paint);
 589   }
 590
 591   DrawGraphLines(canvas, &paint, graph_bounds, paint_time_graph_);
 592
 593   return area;
 594 }
 595
 596 void HeadsUpDisplayLayerImpl::DrawDebugRect(
 597     SkCanvas* canvas,
 598     SkPaint* paint,
 599     const DebugRect& rect,
 600     SkColor stroke_color,
 601     SkColor fill_color,
 602     float stroke_width,
 603     const std::string& label_text) const {
 604   gfx::Rect debug_layer_rect = gfx::ScaleToEnclosingRect(
 605       rect.rect, 1.0 / contents_scale_x(), 1.0 / contents_scale_y());
 606   SkIRect sk_rect = RectToSkIRect(debug_layer_rect);
 607   paint->setColor(fill_color);
 608   paint->setStyle(SkPaint::kFill_Style);
 609   canvas->drawIRect(sk_rect, *paint);
 610
 611   paint->setColor(stroke_color);
 612   paint->setStyle(SkPaint::kStroke_Style);
 613   paint->setStrokeWidth(SkFloatToScalar(stroke_width));
 614   canvas->drawIRect(sk_rect, *paint);
 615
 616   if (label_text.length()) {
 617     const int kFontHeight = 12;
 618     const int kPadding = 3;
 619
 620     // The debug_layer_rect may be huge, and converting to a floating point may
 621     // be lossy, so intersect with the HUD layer bounds first to prevent that.
 622     gfx::Rect clip_rect = debug_layer_rect;
 623     clip_rect.Intersect(gfx::Rect(content_bounds()));
 624     SkRect sk_clip_rect = RectToSkRect(clip_rect);
 625
 626     canvas->save();
 627     canvas->clipRect(sk_clip_rect);
 628     canvas->translate(sk_clip_rect.x(), sk_clip_rect.y());
 629
 630     SkPaint label_paint = CreatePaint();
 631     label_paint.setTextSize(kFontHeight);
 632     label_paint.setTypeface(typeface_.get());
 633     label_paint.setColor(stroke_color);
 634
 635     const SkScalar label_text_width =
 636         label_paint.measureText(label_text.c_str(), label_text.length());
 637     canvas->drawRect(SkRect::MakeWH(label_text_width + 2 * kPadding,
 638                                     kFontHeight + 2 * kPadding),
 639                      label_paint);
 640
 641     label_paint.setAntiAlias(true);
 642     label_paint.setColor(SkColorSetARGB(255, 50, 50, 50));
 643     canvas->drawText(label_text.c_str(),
 644                      label_text.length(),
 645                      kPadding,
 646                      kFontHeight * 0.8f + kPadding,
 647                      label_paint);
 648
 649     canvas->restore();
 650   }
 651 }
 652
 653 void HeadsUpDisplayLayerImpl::DrawDebugRects(
 654     SkCanvas* canvas,
 655     DebugRectHistory* debug_rect_history) {
 656   SkPaint paint = CreatePaint();
 657
 658   const std::vector<DebugRect>& debug_rects = debug_rect_history->debug_rects();
 659   std::vector<DebugRect> new_paint_rects;
 660
 661   for (size_t i = 0; i < debug_rects.size(); ++i) {
 662     SkColor stroke_color = 0;
 663     SkColor fill_color = 0;
 664     float stroke_width = 0.f;
 665     std::string label_text;
 666
 667     switch (debug_rects[i].type) {
 668       case PAINT_RECT_TYPE:
 669         new_paint_rects.push_back(debug_rects[i]);
 670         continue;
 671       case PROPERTY_CHANGED_RECT_TYPE:
 672         stroke_color = DebugColors::PropertyChangedRectBorderColor();
 673         fill_color = DebugColors::PropertyChangedRectFillColor();
 674         stroke_width = DebugColors::PropertyChangedRectBorderWidth();
 675         break;
 676       case SURFACE_DAMAGE_RECT_TYPE:
 677         stroke_color = DebugColors::SurfaceDamageRectBorderColor();
 678         fill_color = DebugColors::SurfaceDamageRectFillColor();
 679         stroke_width = DebugColors::SurfaceDamageRectBorderWidth();
 680         break;
 681       case REPLICA_SCREEN_SPACE_RECT_TYPE:
 682         stroke_color = DebugColors::ScreenSpaceSurfaceReplicaRectBorderColor();
 683         fill_color = DebugColors::ScreenSpaceSurfaceReplicaRectFillColor();
 684         stroke_width = DebugColors::ScreenSpaceSurfaceReplicaRectBorderWidth();
 685         break;
 686       case SCREEN_SPACE_RECT_TYPE:
 687         stroke_color = DebugColors::ScreenSpaceLayerRectBorderColor();
 688         fill_color = DebugColors::ScreenSpaceLayerRectFillColor();
 689         stroke_width = DebugColors::ScreenSpaceLayerRectBorderWidth();
 690         break;
 691       case OCCLUDING_RECT_TYPE:
 692         stroke_color = DebugColors::OccludingRectBorderColor();
 693         fill_color = DebugColors::OccludingRectFillColor();
 694         stroke_width = DebugColors::OccludingRectBorderWidth();
 695         break;
 696       case NONOCCLUDING_RECT_TYPE:
 697         stroke_color = DebugColors::NonOccludingRectBorderColor();
 698         fill_color = DebugColors::NonOccludingRectFillColor();
 699         stroke_width = DebugColors::NonOccludingRectBorderWidth();
 700         break;
 701       case TOUCH_EVENT_HANDLER_RECT_TYPE:
 702         stroke_color = DebugColors::TouchEventHandlerRectBorderColor();
 703         fill_color = DebugColors::TouchEventHandlerRectFillColor();
 704         stroke_width = DebugColors::TouchEventHandlerRectBorderWidth();
 705         label_text = "touch event listener";
 706         break;
 707       case WHEEL_EVENT_HANDLER_RECT_TYPE:
 708         stroke_color = DebugColors::WheelEventHandlerRectBorderColor();
 709         fill_color = DebugColors::WheelEventHandlerRectFillColor();
 710         stroke_width = DebugColors::WheelEventHandlerRectBorderWidth();
 711         label_text = "mousewheel event listener";
 712         break;
 713       case SCROLL_EVENT_HANDLER_RECT_TYPE:
 714         stroke_color = DebugColors::ScrollEventHandlerRectBorderColor();
 715         fill_color = DebugColors::ScrollEventHandlerRectFillColor();
 716         stroke_width = DebugColors::ScrollEventHandlerRectBorderWidth();
 717         label_text = "scroll event listener";
 718         break;
 719       case NON_FAST_SCROLLABLE_RECT_TYPE:
 720         stroke_color = DebugColors::NonFastScrollableRectBorderColor();
 721         fill_color = DebugColors::NonFastScrollableRectFillColor();
 722         stroke_width = DebugColors::NonFastScrollableRectBorderWidth();
 723         label_text = "repaints on scroll";
 724         break;
 725       case ANIMATION_BOUNDS_RECT_TYPE:
 726         stroke_color = DebugColors::LayerAnimationBoundsBorderColor();
 727         fill_color = DebugColors::LayerAnimationBoundsFillColor();
 728         stroke_width = DebugColors::LayerAnimationBoundsBorderWidth();
 729         label_text = "animation bounds";
 730         break;
 731     }
 732
 733     DrawDebugRect(canvas,
 734                   &paint,
 735                   debug_rects[i],
 736                   stroke_color,
 737                   fill_color,
 738                   stroke_width,
 739                   label_text);
 740   }
 741
 742   if (new_paint_rects.size()) {
 743     paint_rects_.swap(new_paint_rects);
 744     fade_step_ = DebugColors::kFadeSteps;
 745   }
 746   if (fade_step_ > 0) {
 747     fade_step_--;
 748     for (size_t i = 0; i < paint_rects_.size(); ++i) {
 749       DrawDebugRect(canvas,
 750                     &paint,
 751                     paint_rects_[i],
 752                     DebugColors::PaintRectBorderColor(fade_step_),
 753                     DebugColors::PaintRectFillColor(fade_step_),
 754                     DebugColors::PaintRectBorderWidth(),
 755                     "");
 756     }
 757   }
 758 }
 759
 760 const char* HeadsUpDisplayLayerImpl::LayerTypeAsString() const {
 761   return "cc::HeadsUpDisplayLayerImpl";
 762 }
 763
 764 void HeadsUpDisplayLayerImpl::AsValueInto(base::DictionaryValue* dict) const {
 765   LayerImpl::AsValueInto(dict);
 766   dict->SetString("layer_name", "Heads Up Display Layer");
 767 }
 768
 769 }  // namespace cc