| /** |
| * Copyright (C) 2006, 2007, 2010 Apple Inc. All rights reserved. |
| * (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/) |
| * Copyright (C) 2010 Google Inc. All rights reserved. |
| * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #include "config.h" |
| #include "core/layout/LayoutTextControlSingleLine.h" |
| |
| #include "core/CSSValueKeywords.h" |
| #include "core/InputTypeNames.h" |
| #include "core/dom/shadow/ShadowRoot.h" |
| #include "core/editing/FrameSelection.h" |
| #include "core/frame/LocalFrame.h" |
| #include "core/html/shadow/ShadowElementNames.h" |
| #include "core/layout/HitTestResult.h" |
| #include "core/layout/LayoutAnalyzer.h" |
| #include "core/layout/LayoutTheme.h" |
| #include "core/paint/LayoutObjectDrawingRecorder.h" |
| #include "core/paint/PaintInfo.h" |
| #include "core/paint/PaintLayer.h" |
| #include "core/paint/ThemePainter.h" |
| #include "platform/PlatformKeyboardEvent.h" |
| #include "platform/fonts/SimpleFontData.h" |
| |
| namespace blink { |
| |
| using namespace HTMLNames; |
| |
| LayoutTextControlSingleLine::LayoutTextControlSingleLine(HTMLInputElement* element) |
| : LayoutTextControl(element) |
| , m_shouldDrawCapsLockIndicator(false) |
| , m_desiredInnerEditorLogicalHeight(-1) |
| { |
| } |
| |
| LayoutTextControlSingleLine::~LayoutTextControlSingleLine() |
| { |
| } |
| |
| inline Element* LayoutTextControlSingleLine::containerElement() const |
| { |
| return inputElement()->userAgentShadowRoot()->getElementById(ShadowElementNames::textFieldContainer()); |
| } |
| |
| inline Element* LayoutTextControlSingleLine::editingViewPortElement() const |
| { |
| return inputElement()->userAgentShadowRoot()->getElementById(ShadowElementNames::editingViewPort()); |
| } |
| |
| inline HTMLElement* LayoutTextControlSingleLine::innerSpinButtonElement() const |
| { |
| return toHTMLElement(inputElement()->userAgentShadowRoot()->getElementById(ShadowElementNames::spinButton())); |
| } |
| |
| void LayoutTextControlSingleLine::paint(const PaintInfo& paintInfo, const LayoutPoint& paintOffset) const |
| { |
| LayoutTextControl::paint(paintInfo, paintOffset); |
| |
| if (paintInfo.phase == PaintPhaseBlockBackground && m_shouldDrawCapsLockIndicator) { |
| if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*paintInfo.context, *this, paintInfo.phase, paintOffset)) |
| return; |
| |
| LayoutRect contentsRect = contentBoxRect(); |
| |
| // Center in the block progression direction. |
| if (isHorizontalWritingMode()) |
| contentsRect.setY((size().height() - contentsRect.height()) / 2); |
| else |
| contentsRect.setX((size().width() - contentsRect.width()) / 2); |
| |
| // Convert the rect into the coords used for painting the content |
| contentsRect.moveBy(paintOffset + location()); |
| IntRect snappedRect = pixelSnappedIntRect(contentsRect); |
| LayoutObjectDrawingRecorder recorder(*paintInfo.context, *this, paintInfo.phase, snappedRect, paintOffset); |
| LayoutTheme::theme().painter().paintCapsLockIndicator(*this, paintInfo, snappedRect); |
| } |
| } |
| |
| LayoutUnit LayoutTextControlSingleLine::computeLogicalHeightLimit() const |
| { |
| return containerElement() ? contentLogicalHeight() : logicalHeight(); |
| } |
| |
| void LayoutTextControlSingleLine::layout() |
| { |
| LayoutAnalyzer::Scope analyzer(*this); |
| SubtreeLayoutScope layoutScope(*this); |
| |
| // FIXME: This code is madness (https://crbug.com/461117) |
| // FIXME: We should remove the height-related hacks in layout() and |
| // styleDidChange(). We need them because |
| // - Center the inner elements vertically if the input height is taller than |
| // the intrinsic height of the inner elements. |
| // - Shrink the inner elment heights if the input height is samller than the |
| // intrinsic heights of the inner elements. |
| |
| // We don't honor paddings and borders for textfields without decorations |
| // and type=search if the text height is taller than the contentHeight() |
| // because of compability. |
| |
| LayoutBox* innerEditorLayoutObject = innerEditorElement()->layoutBox(); |
| bool innerEditorLayoutObjectHadLayout = innerEditorLayoutObject && innerEditorLayoutObject->needsLayout(); |
| LayoutBox* viewPortLayoutObject = editingViewPortElement() ? editingViewPortElement()->layoutBox() : 0; |
| |
| // To ensure consistency between layouts, we need to reset any conditionally overriden height. |
| if (innerEditorLayoutObject && !innerEditorLayoutObject->styleRef().logicalHeight().isAuto()) { |
| innerEditorLayoutObject->mutableStyleRef().setLogicalHeight(Length(Auto)); |
| layoutScope.setNeedsLayout(innerEditorLayoutObject, LayoutInvalidationReason::TextControlChanged); |
| HTMLElement* placeholderElement = inputElement()->placeholderElement(); |
| if (LayoutBox* placeholderBox = placeholderElement ? placeholderElement->layoutBox() : 0) |
| layoutScope.setNeedsLayout(placeholderBox, LayoutInvalidationReason::TextControlChanged); |
| } |
| if (viewPortLayoutObject && !viewPortLayoutObject->styleRef().logicalHeight().isAuto()) { |
| viewPortLayoutObject->mutableStyleRef().setLogicalHeight(Length(Auto)); |
| layoutScope.setNeedsLayout(viewPortLayoutObject, LayoutInvalidationReason::TextControlChanged); |
| } |
| |
| LayoutBlockFlow::layoutBlock(false); |
| |
| Element* container = containerElement(); |
| LayoutBox* containerLayoutObject = container ? container->layoutBox() : 0; |
| |
| // Set the text block height |
| LayoutUnit desiredLogicalHeight = textBlockLogicalHeight(); |
| LayoutUnit logicalHeightLimit = computeLogicalHeightLimit(); |
| if (innerEditorLayoutObject && innerEditorLayoutObject->logicalHeight() > logicalHeightLimit) { |
| if (desiredLogicalHeight != innerEditorLayoutObject->logicalHeight()) |
| layoutScope.setNeedsLayout(this, LayoutInvalidationReason::TextControlChanged); |
| |
| m_desiredInnerEditorLogicalHeight = desiredLogicalHeight; |
| |
| innerEditorLayoutObject->mutableStyleRef().setLogicalHeight(Length(desiredLogicalHeight, Fixed)); |
| layoutScope.setNeedsLayout(innerEditorLayoutObject, LayoutInvalidationReason::TextControlChanged); |
| if (viewPortLayoutObject) { |
| viewPortLayoutObject->mutableStyleRef().setLogicalHeight(Length(desiredLogicalHeight, Fixed)); |
| layoutScope.setNeedsLayout(viewPortLayoutObject, LayoutInvalidationReason::TextControlChanged); |
| } |
| } |
| // The container might be taller because of decoration elements. |
| if (containerLayoutObject) { |
| containerLayoutObject->layoutIfNeeded(); |
| LayoutUnit containerLogicalHeight = containerLayoutObject->logicalHeight(); |
| if (containerLogicalHeight > logicalHeightLimit) { |
| containerLayoutObject->mutableStyleRef().setLogicalHeight(Length(logicalHeightLimit, Fixed)); |
| layoutScope.setNeedsLayout(this, LayoutInvalidationReason::TextControlChanged); |
| } else if (containerLayoutObject->logicalHeight() < contentLogicalHeight()) { |
| containerLayoutObject->mutableStyleRef().setLogicalHeight(Length(contentLogicalHeight(), Fixed)); |
| layoutScope.setNeedsLayout(this, LayoutInvalidationReason::TextControlChanged); |
| } else { |
| containerLayoutObject->mutableStyleRef().setLogicalHeight(Length(containerLogicalHeight, Fixed)); |
| } |
| } |
| |
| // We ensure that the inner editor layoutObject is laid out at least once. This is |
| // required as the logic below assumes that we don't carry over previous layout values. |
| if (innerEditorLayoutObject && !innerEditorLayoutObjectHadLayout) |
| layoutScope.setNeedsLayout(innerEditorLayoutObject, LayoutInvalidationReason::TextControlChanged); |
| |
| // If we need another layout pass, we have changed one of children's height so we need to relayout them. |
| if (needsLayout()) |
| LayoutBlockFlow::layoutBlock(true); |
| |
| // Center the child block in the block progression direction (vertical centering for horizontal text fields). |
| if (!container && innerEditorLayoutObject && innerEditorLayoutObject->size().height() != contentLogicalHeight()) { |
| LayoutUnit logicalHeightDiff = innerEditorLayoutObject->logicalHeight() - contentLogicalHeight(); |
| innerEditorLayoutObject->setLogicalTop(innerEditorLayoutObject->logicalTop() - (logicalHeightDiff / 2 + layoutMod(logicalHeightDiff, 2))); |
| } else { |
| centerContainerIfNeeded(containerLayoutObject); |
| } |
| |
| HTMLElement* placeholderElement = inputElement()->placeholderElement(); |
| if (LayoutBox* placeholderBox = placeholderElement ? placeholderElement->layoutBox() : 0) { |
| LayoutSize innerEditorSize; |
| |
| if (innerEditorLayoutObject) |
| innerEditorSize = innerEditorLayoutObject->size(); |
| placeholderBox->mutableStyleRef().setWidth(Length(innerEditorSize.width() - placeholderBox->borderAndPaddingWidth(), Fixed)); |
| placeholderBox->mutableStyleRef().setHeight(Length(innerEditorSize.height() - placeholderBox->borderAndPaddingHeight(), Fixed)); |
| bool neededLayout = placeholderBox->needsLayout(); |
| placeholderBox->layoutIfNeeded(); |
| LayoutPoint textOffset; |
| if (innerEditorLayoutObject) |
| textOffset = innerEditorLayoutObject->location(); |
| if (editingViewPortElement() && editingViewPortElement()->layoutBox()) |
| textOffset += toLayoutSize(editingViewPortElement()->layoutBox()->location()); |
| if (containerLayoutObject) |
| textOffset += toLayoutSize(containerLayoutObject->location()); |
| placeholderBox->setLocation(textOffset); |
| |
| // The placeholder gets layout last, after the parent text control and its other children, |
| // so in order to get the correct overflow from the placeholder we need to recompute it now. |
| if (neededLayout) |
| computeOverflow(clientLogicalBottom()); |
| } |
| } |
| |
| bool LayoutTextControlSingleLine::nodeAtPoint(HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction) |
| { |
| if (!LayoutTextControl::nodeAtPoint(result, locationInContainer, accumulatedOffset, hitTestAction)) |
| return false; |
| |
| // Say that we hit the inner text element if |
| // - we hit a node inside the inner text element, |
| // - we hit the <input> element (e.g. we're over the border or padding), or |
| // - we hit regions not in any decoration buttons. |
| Element* container = containerElement(); |
| if (result.innerNode()->isDescendantOf(innerEditorElement()) || result.innerNode() == node() || (container && container == result.innerNode())) { |
| LayoutPoint pointInParent = locationInContainer.point(); |
| if (container && editingViewPortElement()) { |
| if (editingViewPortElement()->layoutBox()) |
| pointInParent -= toLayoutSize(editingViewPortElement()->layoutBox()->location()); |
| if (container->layoutBox()) |
| pointInParent -= toLayoutSize(container->layoutBox()->location()); |
| } |
| hitInnerEditorElement(result, pointInParent, accumulatedOffset); |
| } |
| return true; |
| } |
| |
| void LayoutTextControlSingleLine::styleDidChange(StyleDifference diff, const ComputedStyle* oldStyle) |
| { |
| m_desiredInnerEditorLogicalHeight = -1; |
| LayoutTextControl::styleDidChange(diff, oldStyle); |
| |
| // We may have set the width and the height in the old style in layout(). |
| // Reset them now to avoid getting a spurious layout hint. |
| Element* viewPort = editingViewPortElement(); |
| if (LayoutObject* viewPortLayoutObject = viewPort ? viewPort->layoutObject() : 0) { |
| viewPortLayoutObject->mutableStyleRef().setHeight(Length()); |
| viewPortLayoutObject->mutableStyleRef().setWidth(Length()); |
| } |
| Element* container = containerElement(); |
| if (LayoutObject* containerLayoutObject = container ? container->layoutObject() : 0) { |
| containerLayoutObject->mutableStyleRef().setHeight(Length()); |
| containerLayoutObject->mutableStyleRef().setWidth(Length()); |
| } |
| LayoutObject* innerEditorLayoutObject = innerEditorElement()->layoutObject(); |
| if (innerEditorLayoutObject && diff.needsFullLayout()) |
| innerEditorLayoutObject->setNeedsLayoutAndFullPaintInvalidation(LayoutInvalidationReason::StyleChange); |
| if (HTMLElement* placeholder = inputElement()->placeholderElement()) |
| placeholder->setInlineStyleProperty(CSSPropertyTextOverflow, textShouldBeTruncated() ? CSSValueEllipsis : CSSValueClip); |
| setHasOverflowClip(false); |
| } |
| |
| void LayoutTextControlSingleLine::capsLockStateMayHaveChanged() |
| { |
| if (!node()) |
| return; |
| |
| // Only draw the caps lock indicator if these things are true: |
| // 1) The field is a password field |
| // 2) The frame is active |
| // 3) The element is focused |
| // 4) The caps lock is on |
| bool shouldDrawCapsLockIndicator = false; |
| |
| if (LocalFrame* frame = document().frame()) |
| shouldDrawCapsLockIndicator = inputElement()->type() == InputTypeNames::password && frame->selection().isFocusedAndActive() && document().focusedElement() == node() && PlatformKeyboardEvent::currentCapsLockState(); |
| |
| if (shouldDrawCapsLockIndicator != m_shouldDrawCapsLockIndicator) { |
| m_shouldDrawCapsLockIndicator = shouldDrawCapsLockIndicator; |
| setShouldDoFullPaintInvalidation(); |
| } |
| } |
| |
| bool LayoutTextControlSingleLine::hasControlClip() const |
| { |
| // Apply control clip for text fields with decorations. |
| return !!containerElement(); |
| } |
| |
| LayoutRect LayoutTextControlSingleLine::controlClipRect(const LayoutPoint& additionalOffset) const |
| { |
| ASSERT(hasControlClip()); |
| LayoutRect clipRect = contentBoxRect(); |
| if (containerElement()->layoutBox()) |
| clipRect = unionRect(clipRect, containerElement()->layoutBox()->frameRect()); |
| clipRect.moveBy(additionalOffset); |
| return clipRect; |
| } |
| |
| float LayoutTextControlSingleLine::getAvgCharWidth(const AtomicString& family) const |
| { |
| // Match the default system font to the width of MS Shell Dlg, the default |
| // font for textareas in Firefox, Safari Win and IE for some encodings (in |
| // IE, the default font is encoding specific). 901 is the avgCharWidth value |
| // in the OS/2 table for MS Shell Dlg. |
| if (LayoutTheme::theme().needsHackForTextControlWithFontFamily(family)) |
| return scaleEmToUnits(901); |
| |
| return LayoutTextControl::getAvgCharWidth(family); |
| } |
| |
| LayoutUnit LayoutTextControlSingleLine::preferredContentLogicalWidth(float charWidth) const |
| { |
| int factor; |
| bool includesDecoration = inputElement()->sizeShouldIncludeDecoration(factor); |
| if (factor <= 0) |
| factor = 20; |
| |
| LayoutUnit result = LayoutUnit::fromFloatCeil(charWidth * factor); |
| |
| float maxCharWidth = 0.f; |
| AtomicString family = styleRef().font().fontDescription().family().family(); |
| // Match the default system font to the width of MS Shell Dlg, the default |
| // font for textareas in Firefox, Safari Win and IE for some encodings (in |
| // IE, the default font is encoding specific). 4027 is the (xMax - xMin) |
| // value in the "head" font table for MS Shell Dlg. |
| if (LayoutTheme::theme().needsHackForTextControlWithFontFamily(family)) |
| maxCharWidth = scaleEmToUnits(4027); |
| else if (hasValidAvgCharWidth(family)) |
| maxCharWidth = roundf(styleRef().font().primaryFont()->maxCharWidth()); |
| |
| // For text inputs, IE adds some extra width. |
| if (maxCharWidth > 0.f) |
| result += maxCharWidth - charWidth; |
| |
| if (includesDecoration) { |
| HTMLElement* spinButton = innerSpinButtonElement(); |
| if (LayoutBox* spinLayoutObject = spinButton ? spinButton->layoutBox() : 0) { |
| result += spinLayoutObject->borderAndPaddingLogicalWidth(); |
| // Since the width of spinLayoutObject is not calculated yet, spinLayoutObject->logicalWidth() returns 0. |
| // So ensureComputedStyle()->logicalWidth() is used instead. |
| result += spinButton->ensureComputedStyle()->logicalWidth().value(); |
| } |
| } |
| |
| return result; |
| } |
| |
| LayoutUnit LayoutTextControlSingleLine::computeControlLogicalHeight(LayoutUnit lineHeight, LayoutUnit nonContentHeight) const |
| { |
| return lineHeight + nonContentHeight; |
| } |
| |
| PassRefPtr<ComputedStyle> LayoutTextControlSingleLine::createInnerEditorStyle(const ComputedStyle& startStyle) const |
| { |
| RefPtr<ComputedStyle> textBlockStyle = ComputedStyle::create(); |
| textBlockStyle->inheritFrom(startStyle); |
| adjustInnerEditorStyle(*textBlockStyle); |
| |
| textBlockStyle->setWhiteSpace(PRE); |
| textBlockStyle->setOverflowWrap(NormalOverflowWrap); |
| textBlockStyle->setTextOverflow(textShouldBeTruncated() ? TextOverflowEllipsis : TextOverflowClip); |
| |
| if (m_desiredInnerEditorLogicalHeight >= 0) |
| textBlockStyle->setLogicalHeight(Length(m_desiredInnerEditorLogicalHeight, Fixed)); |
| // Do not allow line-height to be smaller than our default. |
| if (textBlockStyle->fontSize() >= lineHeight(true, HorizontalLine, PositionOfInteriorLineBoxes)) |
| textBlockStyle->setLineHeight(ComputedStyle::initialLineHeight()); |
| |
| textBlockStyle->setDisplay(BLOCK); |
| textBlockStyle->setUnique(); |
| |
| if (inputElement()->shouldRevealPassword()) |
| textBlockStyle->setTextSecurity(TSNONE); |
| |
| textBlockStyle->setOverflowX(OSCROLL); |
| textBlockStyle->setOverflowY(OSCROLL); |
| RefPtr<ComputedStyle> noScrollbarStyle = ComputedStyle::create(); |
| noScrollbarStyle->setStyleType(SCROLLBAR); |
| noScrollbarStyle->setDisplay(NONE); |
| textBlockStyle->addCachedPseudoStyle(noScrollbarStyle); |
| textBlockStyle->setHasPseudoStyle(SCROLLBAR); |
| |
| return textBlockStyle.release(); |
| } |
| |
| bool LayoutTextControlSingleLine::textShouldBeTruncated() const |
| { |
| return document().focusedElement() != node() && styleRef().textOverflow() == TextOverflowEllipsis; |
| } |
| |
| void LayoutTextControlSingleLine::autoscroll(const IntPoint& position) |
| { |
| LayoutBox* layoutObject = innerEditorElement()->layoutBox(); |
| if (!layoutObject) |
| return; |
| |
| layoutObject->autoscroll(position); |
| } |
| |
| LayoutUnit LayoutTextControlSingleLine::scrollWidth() const |
| { |
| if (LayoutBox* inner = innerEditorElement() ? innerEditorElement()->layoutBox() : 0) { |
| // Adjust scrollWidth to inculde input element horizontal paddings and |
| // decoration width |
| LayoutUnit adjustment = clientWidth() - inner->clientWidth(); |
| return inner->scrollWidth() + adjustment; |
| } |
| return LayoutBlockFlow::scrollWidth(); |
| } |
| |
| LayoutUnit LayoutTextControlSingleLine::scrollHeight() const |
| { |
| if (LayoutBox* inner = innerEditorElement() ? innerEditorElement()->layoutBox() : 0) { |
| // Adjust scrollHeight to include input element vertical paddings and |
| // decoration height |
| LayoutUnit adjustment = clientHeight() - inner->clientHeight(); |
| return inner->scrollHeight() + adjustment; |
| } |
| return LayoutBlockFlow::scrollHeight(); |
| } |
| |
| LayoutUnit LayoutTextControlSingleLine::scrollLeft() const |
| { |
| if (innerEditorElement()) |
| return innerEditorElement()->scrollLeft(); |
| return LayoutBlockFlow::scrollLeft(); |
| } |
| |
| LayoutUnit LayoutTextControlSingleLine::scrollTop() const |
| { |
| if (innerEditorElement()) |
| return innerEditorElement()->scrollTop(); |
| return LayoutBlockFlow::scrollTop(); |
| } |
| |
| void LayoutTextControlSingleLine::setScrollLeft(LayoutUnit newLeft) |
| { |
| if (innerEditorElement()) |
| innerEditorElement()->setScrollLeft(newLeft); |
| } |
| |
| void LayoutTextControlSingleLine::setScrollTop(LayoutUnit newTop) |
| { |
| if (innerEditorElement()) |
| innerEditorElement()->setScrollTop(newTop); |
| } |
| |
| HTMLInputElement* LayoutTextControlSingleLine::inputElement() const |
| { |
| return toHTMLInputElement(node()); |
| } |
| |
| } |