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6d8bd99afb
Reverting this broke the flow tests for the performance overlay: ``` ../../flutter/flow/layers/performance_overlay_layer_unittests.cc:70: Failure Value of: golden_data != nullptr Actual: false Expected: true ``` This reverts commit 8427d73c8340c9e51492689ee66261a4a72cac9e.
88 lines
3.0 KiB
C++
88 lines
3.0 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <iomanip>
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#include <iostream>
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#include <string>
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#include "flutter/flow/layers/performance_overlay_layer.h"
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#include "third_party/skia/include/core/SkFont.h"
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namespace flow {
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namespace {
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void DrawStatisticsText(SkCanvas& canvas,
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const std::string& string,
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int x,
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int y) {
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SkFont font;
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font.setSize(15);
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font.setLinearMetrics(false);
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SkPaint paint;
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paint.setColor(SK_ColorGRAY);
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canvas.drawSimpleText(string.c_str(), string.size(), kUTF8_SkTextEncoding, x,
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y, font, paint);
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}
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void VisualizeStopWatch(SkCanvas& canvas,
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const Stopwatch& stopwatch,
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SkScalar x,
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SkScalar y,
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SkScalar width,
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SkScalar height,
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bool show_graph,
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bool show_labels,
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const std::string& label_prefix) {
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const int label_x = 8; // distance from x
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const int label_y = -10; // distance from y+height
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if (show_graph) {
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SkRect visualization_rect = SkRect::MakeXYWH(x, y, width, height);
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stopwatch.Visualize(canvas, visualization_rect);
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}
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if (show_labels) {
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double max_ms_per_frame = stopwatch.MaxDelta().ToMillisecondsF();
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double average_ms_per_frame = stopwatch.AverageDelta().ToMillisecondsF();
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std::stringstream stream;
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stream.setf(std::ios::fixed | std::ios::showpoint);
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stream << std::setprecision(1);
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stream << label_prefix << " "
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<< "max " << max_ms_per_frame << " ms/frame, "
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<< "avg " << average_ms_per_frame << " ms/frame";
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DrawStatisticsText(canvas, stream.str(), x + label_x, y + height + label_y);
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}
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}
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} // namespace
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PerformanceOverlayLayer::PerformanceOverlayLayer(uint64_t options)
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: options_(options) {}
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void PerformanceOverlayLayer::Paint(PaintContext& context) const {
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const int padding = 8;
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if (!options_)
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return;
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TRACE_EVENT0("flutter", "PerformanceOverlayLayer::Paint");
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SkScalar x = paint_bounds().x() + padding;
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SkScalar y = paint_bounds().y() + padding;
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SkScalar width = paint_bounds().width() - (padding * 2);
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SkScalar height = paint_bounds().height() / 2;
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SkAutoCanvasRestore save(context.leaf_nodes_canvas, true);
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VisualizeStopWatch(*context.leaf_nodes_canvas, context.frame_time, x, y,
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width, height - padding,
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options_ & kVisualizeRasterizerStatistics,
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options_ & kDisplayRasterizerStatistics, "GPU");
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VisualizeStopWatch(*context.leaf_nodes_canvas, context.engine_time, x,
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y + height, width, height - padding,
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options_ & kVisualizeEngineStatistics,
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options_ & kDisplayEngineStatistics, "UI");
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}
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} // namespace flow
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