heads_up_display_layer_impl.cc revision c2e0dbddbe15c98d52c4786dac06cb8952a8ae6d 
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/stringprintf.h"
11#include "base/strings/string_split.h"
12#include "cc/debug/debug_colors.h"
13#include "cc/debug/debug_rect_history.h"
14#include "cc/debug/frame_rate_counter.h"
15#include "cc/debug/paint_time_counter.h"
16#include "cc/layers/quad_sink.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/resources/tile_manager.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/point.h"
30#include "ui/gfx/size.h"
31
32namespace cc {
33
34static inline SkPaint CreatePaint() {
35  SkPaint paint;
36#if (SK_R32_SHIFT || SK_B32_SHIFT != 16)
37  // The SkCanvas is in RGBA but the shader is expecting BGRA, so we need to
38  // swizzle our colors when drawing to the SkCanvas.
39  SkColorMatrix swizzle_matrix;
40  for (int i = 0; i < 20; ++i)
41    swizzle_matrix.fMat[i] = 0;
42  swizzle_matrix.fMat[0 + 5 * 2] = 1;
43  swizzle_matrix.fMat[1 + 5 * 1] = 1;
44  swizzle_matrix.fMat[2 + 5 * 0] = 1;
45  swizzle_matrix.fMat[3 + 5 * 3] = 1;
46
47  skia::RefPtr<SkColorMatrixFilter> filter =
48      skia::AdoptRef(new SkColorMatrixFilter(swizzle_matrix));
49  paint.setColorFilter(filter.get());
50#endif
51  return paint;
52}
53
54HeadsUpDisplayLayerImpl::Graph::Graph(double indicator_value,
55                                      double start_upper_bound)
56    : value(0.0),
57      min(0.0),
58      max(0.0),
59      current_upper_bound(start_upper_bound),
60      default_upper_bound(start_upper_bound),
61      indicator(indicator_value) {}
62
63double HeadsUpDisplayLayerImpl::Graph::UpdateUpperBound() {
64  double target_upper_bound = std::max(max, default_upper_bound);
65  current_upper_bound += (target_upper_bound - current_upper_bound) * 0.5;
66  return current_upper_bound;
67}
68
69HeadsUpDisplayLayerImpl::HeadsUpDisplayLayerImpl(LayerTreeImpl* tree_impl,
70                                                 int id)
71    : LayerImpl(tree_impl, id),
72      typeface_(skia::AdoptRef(
73          SkTypeface::CreateFromName("monospace", SkTypeface::kBold))),
74      fps_graph_(60.0, 80.0),
75      paint_time_graph_(16.0, 48.0) {}
76
77HeadsUpDisplayLayerImpl::~HeadsUpDisplayLayerImpl() {}
78
79scoped_ptr<LayerImpl> HeadsUpDisplayLayerImpl::CreateLayerImpl(
80    LayerTreeImpl* tree_impl) {
81  return HeadsUpDisplayLayerImpl::Create(tree_impl, id()).PassAs<LayerImpl>();
82}
83
84void HeadsUpDisplayLayerImpl::WillDraw(ResourceProvider* resource_provider) {
85  LayerImpl::WillDraw(resource_provider);
86
87  if (!hud_resource_)
88    hud_resource_ = ScopedResource::create(resource_provider);
89
90  // TODO(danakj): Scale the HUD by device scale to make it more friendly under
91  // high DPI.
92
93  // TODO(danakj): The HUD could swap between two textures instead of creating a
94  // texture every frame in ubercompositor.
95  if (hud_resource_->size() != bounds() ||
96      resource_provider->InUseByConsumer(hud_resource_->id()))
97    hud_resource_->Free();
98
99  if (!hud_resource_->id()) {
100    hud_resource_->Allocate(
101        bounds(), GL_RGBA, ResourceProvider::TextureUsageAny);
102  }
103}
104
105void HeadsUpDisplayLayerImpl::AppendQuads(QuadSink* quad_sink,
106                                          AppendQuadsData* append_quads_data) {
107  if (!hud_resource_->id())
108    return;
109
110  SharedQuadState* shared_quad_state =
111      quad_sink->UseSharedQuadState(CreateSharedQuadState());
112
113  gfx::Rect quad_rect(bounds());
114  gfx::Rect opaque_rect(contents_opaque() ? quad_rect : gfx::Rect());
115  bool premultiplied_alpha = true;
116  gfx::PointF uv_top_left(0.f, 0.f);
117  gfx::PointF uv_bottom_right(1.f, 1.f);
118  const float vertex_opacity[] = { 1.f, 1.f, 1.f, 1.f };
119  bool flipped = false;
120  scoped_ptr<TextureDrawQuad> quad = TextureDrawQuad::Create();
121  quad->SetNew(shared_quad_state,
122               quad_rect,
123               opaque_rect,
124               hud_resource_->id(),
125               premultiplied_alpha,
126               uv_top_left,
127               uv_bottom_right,
128               vertex_opacity,
129               flipped);
130  quad_sink->Append(quad.PassAs<DrawQuad>(), append_quads_data);
131}
132
133void HeadsUpDisplayLayerImpl::UpdateHudTexture(
134    ResourceProvider* resource_provider) {
135  if (!hud_resource_->id())
136    return;
137
138  SkISize canvas_size;
139  if (hud_canvas_)
140    canvas_size = hud_canvas_->getDeviceSize();
141  else
142    canvas_size.set(0, 0);
143
144  if (canvas_size.fWidth != bounds().width() ||
145      canvas_size.fHeight != bounds().height() || !hud_canvas_) {
146    bool opaque = false;
147    hud_canvas_ = make_scoped_ptr(
148        skia::CreateBitmapCanvas(bounds().width(), bounds().height(), opaque));
149  }
150
151  UpdateHudContents();
152
153  hud_canvas_->clear(SkColorSetARGB(0, 0, 0, 0));
154  DrawHudContents(hud_canvas_.get());
155
156  const SkBitmap* bitmap = &hud_canvas_->getDevice()->accessBitmap(false);
157  SkAutoLockPixels locker(*bitmap);
158
159  gfx::Rect layer_rect(bounds());
160  DCHECK(bitmap->config() == SkBitmap::kARGB_8888_Config);
161  resource_provider->SetPixels(hud_resource_->id(),
162                               static_cast<const uint8_t*>(bitmap->getPixels()),
163                               layer_rect,
164                               layer_rect,
165                               gfx::Vector2d());
166}
167
168void HeadsUpDisplayLayerImpl::DidDraw(ResourceProvider* resource_provider) {
169  LayerImpl::DidDraw(resource_provider);
170
171  if (!hud_resource_->id())
172    return;
173
174  // FIXME: the following assert will not be true when sending resources to a
175  // parent compositor. We will probably need to hold on to hud_resource_ for
176  // longer, and have several HUD textures in the pipeline.
177  DCHECK(!resource_provider->InUseByConsumer(hud_resource_->id()));
178}
179
180void HeadsUpDisplayLayerImpl::DidLoseOutputSurface() { hud_resource_.reset(); }
181
182bool HeadsUpDisplayLayerImpl::LayerIsAlwaysDamaged() const { return true; }
183
184void HeadsUpDisplayLayerImpl::UpdateHudContents() {
185  const LayerTreeDebugState& debug_state = layer_tree_impl()->debug_state();
186
187  // Don't update numbers every frame so text is readable.
188  base::TimeTicks now = layer_tree_impl()->CurrentFrameTimeTicks();
189  if (base::TimeDelta(now - time_of_last_graph_update_).InSecondsF() > 0.25f) {
190    time_of_last_graph_update_ = now;
191
192    if (debug_state.show_fps_counter) {
193      FrameRateCounter* fps_counter = layer_tree_impl()->frame_rate_counter();
194      fps_graph_.value = fps_counter->GetAverageFPS();
195      fps_counter->GetMinAndMaxFPS(&fps_graph_.min, &fps_graph_.max);
196    }
197
198    if (debug_state.continuous_painting) {
199      PaintTimeCounter* paint_time_counter =
200          layer_tree_impl()->paint_time_counter();
201      base::TimeDelta latest, min, max;
202
203      if (paint_time_counter->End())
204        latest = **paint_time_counter->End();
205      paint_time_counter->GetMinAndMaxPaintTime(&min, &max);
206
207      paint_time_graph_.value = latest.InMillisecondsF();
208      paint_time_graph_.min = min.InMillisecondsF();
209      paint_time_graph_.max = max.InMillisecondsF();
210    }
211
212    if (debug_state.ShowMemoryStats()) {
213      MemoryHistory* memory_history = layer_tree_impl()->memory_history();
214      if (memory_history->End())
215        memory_entry_ = **memory_history->End();
216      else
217        memory_entry_ = MemoryHistory::Entry();
218    }
219  }
220
221  fps_graph_.UpdateUpperBound();
222  paint_time_graph_.UpdateUpperBound();
223}
224
225void HeadsUpDisplayLayerImpl::DrawHudContents(SkCanvas* canvas) const {
226  const LayerTreeDebugState& debug_state = layer_tree_impl()->debug_state();
227
228  if (debug_state.ShowHudRects())
229    DrawDebugRects(canvas, layer_tree_impl()->debug_rect_history());
230
231  if (debug_state.show_platform_layer_tree)
232    DrawPlatformLayerTree(canvas);
233
234  SkRect area = SkRect::MakeEmpty();
235  if (debug_state.continuous_painting) {
236    // Don't show the FPS display when continuous painting is enabled, because
237    // it would show misleading numbers.
238    area = DrawPaintTimeDisplay(
239        canvas, layer_tree_impl()->paint_time_counter(), 0, 0);
240  } else if (debug_state.show_fps_counter) {
241    area =
242        DrawFPSDisplay(canvas, layer_tree_impl()->frame_rate_counter(), 0, 0);
243  }
244
245  if (debug_state.ShowMemoryStats())
246    DrawMemoryDisplay(canvas, 0, area.bottom(), SkMaxScalar(area.width(), 150));
247}
248
249void HeadsUpDisplayLayerImpl::DrawText(SkCanvas* canvas,
250                                       SkPaint* paint,
251                                       const std::string& text,
252                                       SkPaint::Align align,
253                                       int size,
254                                       int x,
255                                       int y) const {
256  const bool anti_alias = paint->isAntiAlias();
257  paint->setAntiAlias(true);
258
259  paint->setTextSize(size);
260  paint->setTextAlign(align);
261  paint->setTypeface(typeface_.get());
262  canvas->drawText(text.c_str(), text.length(), x, y, *paint);
263
264  paint->setAntiAlias(anti_alias);
265}
266
267void HeadsUpDisplayLayerImpl::DrawText(SkCanvas* canvas,
268                                       SkPaint* paint,
269                                       const std::string& text,
270                                       SkPaint::Align align,
271                                       int size,
272                                       const SkPoint& pos) const {
273  DrawText(canvas, paint, text, align, size, pos.x(), pos.y());
274}
275
276void HeadsUpDisplayLayerImpl::DrawGraphBackground(SkCanvas* canvas,
277                                                  SkPaint* paint,
278                                                  const SkRect& bounds) const {
279  paint->setColor(DebugColors::HUDBackgroundColor());
280  canvas->drawRect(bounds, *paint);
281}
282
283void HeadsUpDisplayLayerImpl::DrawGraphLines(SkCanvas* canvas,
284                                             SkPaint* paint,
285                                             const SkRect& bounds,
286                                             const Graph& graph) const {
287  // Draw top and bottom line.
288  paint->setColor(DebugColors::HUDSeparatorLineColor());
289  canvas->drawLine(bounds.left(),
290                   bounds.top() - 1,
291                   bounds.right(),
292                   bounds.top() - 1,
293                   *paint);
294  canvas->drawLine(
295      bounds.left(), bounds.bottom(), bounds.right(), bounds.bottom(), *paint);
296
297  // Draw indicator line (additive blend mode to increase contrast when drawn on
298  // top of graph).
299  paint->setColor(DebugColors::HUDIndicatorLineColor());
300  paint->setXfermodeMode(SkXfermode::kPlus_Mode);
301  const double indicator_top =
302      bounds.height() * (1.0 - graph.indicator / graph.current_upper_bound) -
303      1.0;
304  canvas->drawLine(bounds.left(),
305                   bounds.top() + indicator_top,
306                   bounds.right(),
307                   bounds.top() + indicator_top,
308                   *paint);
309  paint->setXfermode(NULL);
310}
311
312void HeadsUpDisplayLayerImpl::DrawPlatformLayerTree(SkCanvas* canvas) const {
313  const int kFontHeight = 14;
314  SkPaint paint = CreatePaint();
315  DrawGraphBackground(
316      canvas,
317      &paint,
318      SkRect::MakeXYWH(0, 0, bounds().width(), bounds().height()));
319
320  std::string layer_tree = layer_tree_impl()->layer_tree_as_text();
321  std::vector<std::string> lines;
322  base::SplitString(layer_tree, '\n', &lines);
323
324  paint.setColor(DebugColors::PlatformLayerTreeTextColor());
325  for (size_t i = 0;
326       i < lines.size() &&
327           static_cast<int>(2 + i * kFontHeight) < bounds().height();
328       ++i) {
329    DrawText(canvas,
330             &paint,
331             lines[i],
332             SkPaint::kLeft_Align,
333             kFontHeight,
334             2,
335             2 + (i + 1) * kFontHeight);
336  }
337}
338
339SkRect HeadsUpDisplayLayerImpl::DrawFPSDisplay(
340    SkCanvas* canvas,
341    const FrameRateCounter* fps_counter,
342    int right,
343    int top) const {
344  const int kPadding = 4;
345  const int kGap = 6;
346
347  const int kFontHeight = 15;
348
349  const int kGraphWidth = fps_counter->time_stamp_history_size() - 2;
350  const int kGraphHeight = 40;
351
352  const int kHistogramWidth = 37;
353
354  int width = kGraphWidth + kHistogramWidth + 4 * kPadding;
355  int height = kFontHeight + kGraphHeight + 4 * kPadding + 2;
356  int left = bounds().width() - width - right;
357  SkRect area = SkRect::MakeXYWH(left, top, width, height);
358
359  SkPaint paint = CreatePaint();
360  DrawGraphBackground(canvas, &paint, area);
361
362  SkRect text_bounds =
363      SkRect::MakeXYWH(left + kPadding,
364                       top + kPadding,
365                       kGraphWidth + kHistogramWidth + kGap + 2,
366                       kFontHeight);
367  SkRect graph_bounds = SkRect::MakeXYWH(left + kPadding,
368                                         text_bounds.bottom() + 2 * kPadding,
369                                         kGraphWidth,
370                                         kGraphHeight);
371  SkRect histogram_bounds = SkRect::MakeXYWH(graph_bounds.right() + kGap,
372                                             graph_bounds.top(),
373                                             kHistogramWidth,
374                                             kGraphHeight);
375
376  const std::string value_text =
377      base::StringPrintf("FPS:%5.1f", fps_graph_.value);
378  const std::string min_max_text =
379      base::StringPrintf("%.0f-%.0f", fps_graph_.min, fps_graph_.max);
380
381  paint.setColor(DebugColors::FPSDisplayTextAndGraphColor());
382  DrawText(canvas,
383           &paint,
384           value_text,
385           SkPaint::kLeft_Align,
386           kFontHeight,
387           text_bounds.left(),
388           text_bounds.bottom());
389  DrawText(canvas,
390           &paint,
391           min_max_text,
392           SkPaint::kRight_Align,
393           kFontHeight,
394           text_bounds.right(),
395           text_bounds.bottom());
396
397  DrawGraphLines(canvas, &paint, graph_bounds, fps_graph_);
398
399  // Collect graph and histogram data.
400  SkPath path;
401
402  const int kHistogramSize = 20;
403  double histogram[kHistogramSize] = { 1.0 };
404  double max_bucket_value = 1.0;
405
406  for (FrameRateCounter::RingBufferType::Iterator it = --fps_counter->end(); it;
407       --it) {
408    base::TimeDelta delta = fps_counter->RecentFrameInterval(it.index() + 1);
409
410    // Skip this particular instantaneous frame rate if it is not likely to have
411    // been valid.
412    if (!fps_counter->IsBadFrameInterval(delta)) {
413      double fps = 1.0 / delta.InSecondsF();
414
415      // Clamp the FPS to the range we want to plot visually.
416      double p = fps / fps_graph_.current_upper_bound;
417      if (p > 1.0)
418        p = 1.0;
419
420      // Plot this data point.
421      SkPoint cur =
422          SkPoint::Make(graph_bounds.left() + it.index(),
423                        graph_bounds.bottom() - p * graph_bounds.height());
424      if (path.isEmpty())
425        path.moveTo(cur);
426      else
427        path.lineTo(cur);
428
429      // Use the fps value to find the right bucket in the histogram.
430      int bucket_index = floor(p * (kHistogramSize - 1));
431
432      // Add the delta time to take the time spent at that fps rate into
433      // account.
434      histogram[bucket_index] += delta.InSecondsF();
435      max_bucket_value = std::max(histogram[bucket_index], max_bucket_value);
436    }
437  }
438
439  // Draw FPS histogram.
440  paint.setColor(DebugColors::HUDSeparatorLineColor());
441  canvas->drawLine(histogram_bounds.left() - 1,
442                   histogram_bounds.top() - 1,
443                   histogram_bounds.left() - 1,
444                   histogram_bounds.bottom() + 1,
445                   paint);
446  canvas->drawLine(histogram_bounds.right() + 1,
447                   histogram_bounds.top() - 1,
448                   histogram_bounds.right() + 1,
449                   histogram_bounds.bottom() + 1,
450                   paint);
451
452  paint.setColor(DebugColors::FPSDisplayTextAndGraphColor());
453  const double bar_height = histogram_bounds.height() / kHistogramSize;
454
455  for (int i = kHistogramSize - 1; i >= 0; --i) {
456    if (histogram[i] > 0) {
457      double bar_width =
458          histogram[i] / max_bucket_value * histogram_bounds.width();
459      canvas->drawRect(
460          SkRect::MakeXYWH(histogram_bounds.left(),
461                           histogram_bounds.bottom() - (i + 1) * bar_height,
462                           bar_width,
463                           1),
464          paint);
465    }
466  }
467
468  // Draw FPS graph.
469  paint.setAntiAlias(true);
470  paint.setStyle(SkPaint::kStroke_Style);
471  paint.setStrokeWidth(1);
472  canvas->drawPath(path, paint);
473
474  return area;
475}
476
477SkRect HeadsUpDisplayLayerImpl::DrawMemoryDisplay(SkCanvas* canvas,
478                                                  int right,
479                                                  int top,
480                                                  int width) const {
481  if (!memory_entry_.bytes_total())
482    return SkRect::MakeEmpty();
483
484  const int kPadding = 4;
485  const int kFontHeight = 13;
486
487  const int height = 3 * kFontHeight + 4 * kPadding;
488  const int left = bounds().width() - width - right;
489  const SkRect area = SkRect::MakeXYWH(left, top, width, height);
490
491  const double megabyte = 1024.0 * 1024.0;
492
493  SkPaint paint = CreatePaint();
494  DrawGraphBackground(canvas, &paint, area);
495
496  SkPoint title_pos = SkPoint::Make(left + kPadding, top + kFontHeight);
497  SkPoint stat1_pos = SkPoint::Make(left + width - kPadding - 1,
498                                    top + kPadding + 2 * kFontHeight);
499  SkPoint stat2_pos = SkPoint::Make(left + width - kPadding - 1,
500                                    top + 2 * kPadding + 3 * kFontHeight);
501
502  paint.setColor(DebugColors::MemoryDisplayTextColor());
503  DrawText(canvas,
504           &paint,
505           "GPU memory",
506           SkPaint::kLeft_Align,
507           kFontHeight,
508           title_pos);
509
510  std::string text =
511      base::StringPrintf("%6.1f MB used",
512                         (memory_entry_.bytes_unreleasable +
513                          memory_entry_.bytes_allocated) / megabyte);
514  DrawText(canvas, &paint, text, SkPaint::kRight_Align, kFontHeight, stat1_pos);
515
516  if (memory_entry_.bytes_over) {
517    paint.setColor(SK_ColorRED);
518    text = base::StringPrintf("%6.1f MB over",
519                              memory_entry_.bytes_over / megabyte);
520  } else {
521    text = base::StringPrintf("%6.1f MB max ",
522                              memory_entry_.total_budget_in_bytes / megabyte);
523  }
524  DrawText(canvas, &paint, text, SkPaint::kRight_Align, kFontHeight, stat2_pos);
525
526  return area;
527}
528
529SkRect HeadsUpDisplayLayerImpl::DrawPaintTimeDisplay(
530    SkCanvas* canvas,
531    const PaintTimeCounter* paint_time_counter,
532    int right,
533    int top) const {
534  const int kPadding = 4;
535  const int kFontHeight = 15;
536
537  const int kGraphWidth = paint_time_counter->HistorySize();
538  const int kGraphHeight = 40;
539
540  const int width = kGraphWidth + 2 * kPadding;
541  const int height =
542      kFontHeight + kGraphHeight + 4 * kPadding + 2 + kFontHeight + kPadding;
543  const int left = bounds().width() - width - right;
544
545  const SkRect area = SkRect::MakeXYWH(left, top, width, height);
546
547  SkPaint paint = CreatePaint();
548  DrawGraphBackground(canvas, &paint, area);
549
550  SkRect text_bounds = SkRect::MakeXYWH(
551      left + kPadding, top + kPadding, kGraphWidth, kFontHeight);
552  SkRect text_bounds2 = SkRect::MakeXYWH(left + kPadding,
553                                         text_bounds.bottom() + kPadding,
554                                         kGraphWidth,
555                                         kFontHeight);
556  SkRect graph_bounds = SkRect::MakeXYWH(left + kPadding,
557                                         text_bounds2.bottom() + 2 * kPadding,
558                                         kGraphWidth,
559                                         kGraphHeight);
560
561  const std::string value_text =
562      base::StringPrintf("%.1f", paint_time_graph_.value);
563  const std::string min_max_text = base::StringPrintf(
564      "%.1f-%.1f", paint_time_graph_.min, paint_time_graph_.max);
565
566  paint.setColor(DebugColors::PaintTimeDisplayTextAndGraphColor());
567  DrawText(canvas,
568           &paint,
569           "Page paint time (ms)",
570           SkPaint::kLeft_Align,
571           kFontHeight,
572           text_bounds.left(),
573           text_bounds.bottom());
574  DrawText(canvas,
575           &paint,
576           value_text,
577           SkPaint::kLeft_Align,
578           kFontHeight,
579           text_bounds2.left(),
580           text_bounds2.bottom());
581  DrawText(canvas,
582           &paint,
583           min_max_text,
584           SkPaint::kRight_Align,
585           kFontHeight,
586           text_bounds2.right(),
587           text_bounds2.bottom());
588
589  paint.setColor(DebugColors::PaintTimeDisplayTextAndGraphColor());
590  for (PaintTimeCounter::RingBufferType::Iterator it =
591           paint_time_counter->End();
592       it;
593       --it) {
594    double pt = it->InMillisecondsF();
595
596    if (pt == 0.0)
597      continue;
598
599    double p = pt / paint_time_graph_.current_upper_bound;
600    if (p > 1.0)
601      p = 1.0;
602
603    canvas->drawRect(
604        SkRect::MakeXYWH(graph_bounds.left() + it.index(),
605                         graph_bounds.bottom() - p * graph_bounds.height(),
606                         1,
607                         p * graph_bounds.height()),
608        paint);
609  }
610
611  DrawGraphLines(canvas, &paint, graph_bounds, paint_time_graph_);
612
613  return area;
614}
615
616void HeadsUpDisplayLayerImpl::DrawDebugRects(
617    SkCanvas* canvas,
618    DebugRectHistory* debug_rect_history) const {
619  const std::vector<DebugRect>& debug_rects = debug_rect_history->debug_rects();
620  float rect_scale = 1.f / layer_tree_impl()->device_scale_factor();
621  SkPaint paint = CreatePaint();
622
623  canvas->save();
624  canvas->scale(rect_scale, rect_scale);
625
626  for (size_t i = 0; i < debug_rects.size(); ++i) {
627    SkColor stroke_color = 0;
628    SkColor fill_color = 0;
629    float stroke_width = 0.f;
630
631    switch (debug_rects[i].type) {
632      case PAINT_RECT_TYPE:
633        stroke_color = DebugColors::PaintRectBorderColor();
634        fill_color = DebugColors::PaintRectFillColor();
635        stroke_width = DebugColors::PaintRectBorderWidth(layer_tree_impl());
636        break;
637      case PROPERTY_CHANGED_RECT_TYPE:
638        stroke_color = DebugColors::PropertyChangedRectBorderColor();
639        fill_color = DebugColors::PropertyChangedRectFillColor();
640        stroke_width =
641            DebugColors::PropertyChangedRectBorderWidth(layer_tree_impl());
642        break;
643      case SURFACE_DAMAGE_RECT_TYPE:
644        stroke_color = DebugColors::SurfaceDamageRectBorderColor();
645        fill_color = DebugColors::SurfaceDamageRectFillColor();
646        stroke_width =
647            DebugColors::SurfaceDamageRectBorderWidth(layer_tree_impl());
648        break;
649      case REPLICA_SCREEN_SPACE_RECT_TYPE:
650        stroke_color = DebugColors::ScreenSpaceSurfaceReplicaRectBorderColor();
651        fill_color = DebugColors::ScreenSpaceSurfaceReplicaRectFillColor();
652        stroke_width = DebugColors::ScreenSpaceSurfaceReplicaRectBorderWidth(
653            layer_tree_impl());
654        break;
655      case SCREEN_SPACE_RECT_TYPE:
656        stroke_color = DebugColors::ScreenSpaceLayerRectBorderColor();
657        fill_color = DebugColors::ScreenSpaceLayerRectFillColor();
658        stroke_width =
659            DebugColors::ScreenSpaceLayerRectBorderWidth(layer_tree_impl());
660        break;
661      case OCCLUDING_RECT_TYPE:
662        stroke_color = DebugColors::OccludingRectBorderColor();
663        fill_color = DebugColors::OccludingRectFillColor();
664        stroke_width = DebugColors::OccludingRectBorderWidth(layer_tree_impl());
665        break;
666      case NONOCCLUDING_RECT_TYPE:
667        stroke_color = DebugColors::NonOccludingRectBorderColor();
668        fill_color = DebugColors::NonOccludingRectFillColor();
669        stroke_width =
670            DebugColors::NonOccludingRectBorderWidth(layer_tree_impl());
671        break;
672    }
673
674    const gfx::RectF& rect = debug_rects[i].rect;
675    SkRect sk_rect =
676        SkRect::MakeXYWH(rect.x(), rect.y(), rect.width(), rect.height());
677    paint.setColor(fill_color);
678    paint.setStyle(SkPaint::kFill_Style);
679    canvas->drawRect(sk_rect, paint);
680
681    paint.setColor(stroke_color);
682    paint.setStyle(SkPaint::kStroke_Style);
683    paint.setStrokeWidth(SkFloatToScalar(stroke_width));
684    canvas->drawRect(sk_rect, paint);
685  }
686
687  canvas->restore();
688}
689
690const char* HeadsUpDisplayLayerImpl::LayerTypeAsString() const {
691  return "HeadsUpDisplayLayer";
692}
693
694}  // namespace cc
695