| /** |
| * 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 "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/input/KeyboardEventManager.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/fonts/SimpleFontData.h" |
| |
| namespace blink { |
| |
| using namespace HTMLNames; |
| |
| LayoutTextControlSingleLine::LayoutTextControlSingleLine( |
| HTMLInputElement* element) |
| : LayoutTextControl(element), m_shouldDrawCapsLockIndicator(false) {} |
| |
| 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 (shouldPaintSelfBlockBackground(paintInfo.phase) && |
| m_shouldDrawCapsLockIndicator) { |
| if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible( |
| paintInfo.context, *this, paintInfo.phase)) |
| 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); |
| LayoutTheme::theme().painter().paintCapsLockIndicator(*this, paintInfo, |
| snappedRect); |
| } |
| } |
| |
| void LayoutTextControlSingleLine::layout() { |
| LayoutAnalyzer::Scope analyzer(*this); |
| |
| LayoutBlockFlow::layoutBlock(true); |
| |
| LayoutBox* innerEditorLayoutObject = innerEditorElement()->layoutBox(); |
| Element* container = containerElement(); |
| LayoutBox* containerLayoutObject = |
| container ? container->layoutBox() : nullptr; |
| // 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 if (container && containerLayoutObject && |
| containerLayoutObject->size().height() != contentLogicalHeight()) { |
| LayoutUnit logicalHeightDiff = |
| containerLayoutObject->logicalHeight() - contentLogicalHeight(); |
| containerLayoutObject->setLogicalTop( |
| containerLayoutObject->logicalTop() - |
| (logicalHeightDiff / 2 + layoutMod(logicalHeightDiff, 2))); |
| } |
| |
| 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)); |
| 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()); |
| if (innerEditorLayoutObject) { |
| // We use inlineBlockBaseline() for innerEditor because it has no |
| // inline boxes when we show the placeholder. |
| int innerEditorBaseline = |
| innerEditorLayoutObject->inlineBlockBaseline(HorizontalLine); |
| // We use firstLineBoxBaseline() for placeholder. |
| // TODO(tkent): It's inconsistent with innerEditorBaseline. However |
| // placeholderBox->inlineBlockBase() is unexpectedly larger. |
| int placeholderBaseline = placeholderBox->firstLineBoxBaseline(); |
| textOffset += LayoutSize(0, innerEditorBaseline - placeholderBaseline); |
| } |
| 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) { |
| LayoutTextControl::styleDidChange(diff, oldStyle); |
| if (HTMLElement* placeholder = inputElement()->placeholderElement()) |
| placeholder->setInlineStyleProperty( |
| CSSPropertyTextOverflow, |
| textShouldBeTruncated() ? CSSValueEllipsis : CSSValueClip); |
| } |
| |
| 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() && |
| KeyboardEventManager::currentCapsLockState(); |
| |
| if (shouldDrawCapsLockIndicator != m_shouldDrawCapsLockIndicator) { |
| m_shouldDrawCapsLockIndicator = shouldDrawCapsLockIndicator; |
| setShouldDoFullPaintInvalidation(); |
| } |
| } |
| |
| bool LayoutTextControlSingleLine::hasControlClip() const { |
| return true; |
| } |
| |
| LayoutRect LayoutTextControlSingleLine::controlClipRect( |
| const LayoutPoint& additionalOffset) const { |
| LayoutRect clipRect = paddingBoxRect(); |
| 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; |
| const Font& font = style()->font(); |
| AtomicString family = font.getFontDescription().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(font.primaryFont(), family)) |
| maxCharWidth = roundf(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(EWhiteSpace::kPre); |
| textBlockStyle->setOverflowWrap(NormalOverflowWrap); |
| textBlockStyle->setTextOverflow(textShouldBeTruncated() ? TextOverflowEllipsis |
| : TextOverflowClip); |
| |
| int computedLineHeight = |
| lineHeight(true, HorizontalLine, PositionOfInteriorLineBoxes).toInt(); |
| // Do not allow line-height to be smaller than our default. |
| if (textBlockStyle->fontSize() >= computedLineHeight) |
| textBlockStyle->setLineHeight(ComputedStyle::initialLineHeight()); |
| |
| // We'd like to remove line-height if it's unnecessary because |
| // overflow:scroll clips editing text by line-height. |
| Length logicalHeight = startStyle.logicalHeight(); |
| // Here, we remove line-height if the INPUT fixed height is taller than the |
| // line-height. It's not the precise condition because logicalHeight |
| // includes border and padding if box-sizing:border-box, and there are cases |
| // in which we don't want to remove line-height with percent or calculated |
| // length. |
| // TODO(tkent): This should be done during layout. |
| if (logicalHeight.isPercentOrCalc() || |
| (logicalHeight.isFixed() && |
| logicalHeight.getFloatValue() > computedLineHeight)) |
| textBlockStyle->setLineHeight(ComputedStyle::initialLineHeight()); |
| |
| textBlockStyle->setDisplay(EDisplay::Block); |
| textBlockStyle->setUnique(); |
| |
| if (inputElement()->shouldRevealPassword()) |
| textBlockStyle->setTextSecurity(TSNONE); |
| |
| textBlockStyle->setOverflowX(EOverflow::Scroll); |
| // overflow-y:visible doesn't work because overflow-x:scroll makes a layer. |
| textBlockStyle->setOverflowY(EOverflow::Scroll); |
| RefPtr<ComputedStyle> noScrollbarStyle = ComputedStyle::create(); |
| noScrollbarStyle->setStyleType(PseudoIdScrollbar); |
| noScrollbarStyle->setDisplay(EDisplay::None); |
| textBlockStyle->addCachedPseudoStyle(noScrollbarStyle); |
| textBlockStyle->setHasPseudoStyle(PseudoIdScrollbar); |
| |
| return textBlockStyle.release(); |
| } |
| |
| bool LayoutTextControlSingleLine::textShouldBeTruncated() const { |
| return document().focusedElement() != node() && |
| styleRef().getTextOverflow() == 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 LayoutUnit(innerEditorElement()->scrollLeft()); |
| return LayoutBlockFlow::scrollLeft(); |
| } |
| |
| LayoutUnit LayoutTextControlSingleLine::scrollTop() const { |
| if (innerEditorElement()) |
| return LayoutUnit(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); |
| } |
| |
| void LayoutTextControlSingleLine::addOverflowFromChildren() { |
| // If the INPUT content height is smaller than the font height, the |
| // inner-editor element overflows the INPUT box intentionally, however it |
| // shouldn't affect outside of the INPUT box. So we ignore child overflow. |
| } |
| |
| HTMLInputElement* LayoutTextControlSingleLine::inputElement() const { |
| return toHTMLInputElement(node()); |
| } |
| |
| } // namespace blink |