Revert of Calculate correct cull rect for SVG inline text boxes.

third_party/WebKit/Source/core/paint/SVGInlineTextBoxPainterTest.cpp

-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "core/paint/SVGInlineTextBoxPainter.h"
-
-#include "core/dom/Document.h"
-#include "core/dom/Range.h"
-#include "core/editing/DOMSelection.h"
-#include "core/frame/LocalDOMWindow.h"
-#include "core/layout/LayoutTestHelper.h"
-#include "core/layout/line/InlineTextBox.h"
-#include "core/layout/svg/LayoutSVGInlineText.h"
-#include "core/layout/svg/LayoutSVGText.h"
-#include "core/paint/PaintLayer.h"
-#include "platform/graphics/GraphicsLayer.h"
-#include "platform/graphics/paint/DisplayItemList.h"
-#include "platform/graphics/paint/DrawingDisplayItem.h"
-#include "platform/graphics/paint/PaintController.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace blink {
-namespace {
-
-class SVGInlineTextBoxPainterTest : public RenderingTest {
-public:
-    const DrawingDisplayItem* getDrawingForSVGTextById(const char* elementName)
-    {
-        // Look up the inline text box that serves as the display item client for the painted text.
-        LayoutSVGText* targetSVGText = toLayoutSVGText(
-            document().getElementById(AtomicString(elementName))->layoutObject());
-        LayoutSVGInlineText* targetInlineText = targetSVGText->descendantTextNodes()[0];
-        const DisplayItemClient* targetClient = static_cast<const DisplayItemClient*>(targetInlineText->firstTextBox());
-
-        // Find the appropriate drawing in the display item list.
-        const DisplayItemList& displayItemList = rootPaintController().getDisplayItemList();
-        for (size_t i = 0; i < displayItemList.size(); i++) {
-            if (displayItemList[i].client() == *targetClient)
-                return static_cast<const DrawingDisplayItem*>(&displayItemList[i]);
-        }
-
-        return nullptr;
-    }
-
-    void selectAllText()
-    {
-        Range* range = document().createRange();
-        range->selectNode(document().documentElement());
-        LocalDOMWindow* window = document().domWindow();
-        DOMSelection* selection = window->getSelection();
-        selection->removeAllRanges();
-        selection->addRange(range);
-    }
-
-private:
-    PaintController& rootPaintController()
-    {
-        return document().view()->layoutView()->layer()->graphicsLayerBacking()->getPaintController();
-    }
-
-    void SetUp() override
-    {
-        RenderingTest::SetUp();
-        enableCompositing();
-    }
-};
-
-static void assertTextDrawingEquals(const DrawingDisplayItem* drawingDisplayItem, const char* str)
-{
-    ASSERT_EQ(str, static_cast<const InlineTextBox*>(&drawingDisplayItem->client())->text());
-}
-
-const static int kAllowedPixelDelta = 4;
-
-static void assertCullRectEquals(const DrawingDisplayItem* drawingDisplayItem, const IntRect& expectedRect)
-{
-    // Text metrics can vary slightly across platforms, so we allow for a small pixel difference.
-    IntRect outerRect(expectedRect);
-    int delta = kAllowedPixelDelta / 2;
-    outerRect.expand(delta, delta);
-    IntRect innerRect(expectedRect);
-    // Rect contains is inclusive of edge, so shrink by one extra pixel.
-    innerRect.contract(delta + 1, delta + 1);
-
-    IntRect actualRect(IntRect(drawingDisplayItem->picture()->cullRect()));
-    ASSERT_TRUE(outerRect.contains(actualRect) && !innerRect.contains(actualRect))
-        << "Cull rect not approximately equal [expected=("
-        << expectedRect.x() << "," << expectedRect.y() << " " << expectedRect.width() << "x" << expectedRect.height() << "), actual=("
-        << actualRect.x() << "," << actualRect.y() << " " << actualRect.width() << "x" << actualRect.height() << ")].";
-}
-
-TEST_F(SVGInlineTextBoxPainterTest, TextCullRect_DefaultWritingMode)
-{
-    setBodyInnerHTML(
-        "<svg width='400px' height='400px' font-family='Arial' font-size='30'>"
-        "<text id='target' x='50' y='30'>x</text>"
-        "</svg>");
-    document().view()->updateAllLifecyclePhases();
-
-    const DrawingDisplayItem* drawingDisplayItem = getDrawingForSVGTextById("target");
-    assertTextDrawingEquals(drawingDisplayItem, "x");
-    assertCullRectEquals(drawingDisplayItem, IntRect(50, 3, 15, 33));
-
-    selectAllText();
-    document().view()->updateAllLifecyclePhases();
-
-    drawingDisplayItem = getDrawingForSVGTextById("target");
-    assertTextDrawingEquals(drawingDisplayItem, "x");
-    assertCullRectEquals(drawingDisplayItem, IntRect(50, 3, 15, 33));
-}
-
-TEST_F(SVGInlineTextBoxPainterTest, TextCullRect_WritingModeTopToBottom)
-{
-    setBodyInnerHTML(
-        "<svg width='400px' height='400px' font-family='Arial' font-size='30'>"
-        "<text id='target' x='50' y='30' writing-mode='tb'>x</text>"
-        "</svg>");
-    document().view()->updateAllLifecyclePhases();
-
-    const DrawingDisplayItem* drawingDisplayItem = getDrawingForSVGTextById("target");
-    assertTextDrawingEquals(drawingDisplayItem, "x");
-    assertCullRectEquals(drawingDisplayItem, IntRect(33, 30, 34, 15));
-
-    selectAllText();
-    document().view()->updateAllLifecyclePhases();
-
-    // The selection rect is one pixel taller due to sub-pixel difference
-    // between the text bounds and selection bounds in combination with use of
-    // enclosingIntRect() in SVGInlineTextBox::localSelectionRect().
-    drawingDisplayItem = getDrawingForSVGTextById("target");
-    assertTextDrawingEquals(drawingDisplayItem, "x");
-    assertCullRectEquals(drawingDisplayItem, IntRect(33, 30, 34, 16));
-}
-
-} // namespace
-} // namespace blink