| /* |
| * Copyright (C) 2020 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "FlexFormattingGeometry.h" |
| |
| #if ENABLE(LAYOUT_FORMATTING_CONTEXT) |
| |
| #include "FlexFormattingContext.h" |
| #include "LayoutContext.h" |
| |
| namespace WebCore { |
| namespace Layout { |
| |
| FlexFormattingGeometry::FlexFormattingGeometry(const FlexFormattingContext& flexFormattingContext) |
| : FormattingGeometry(flexFormattingContext) |
| { |
| } |
| |
| IntrinsicWidthConstraints FlexFormattingGeometry::intrinsicWidthConstraints(const ContainerBox& flexItem) const |
| { |
| auto fixedMarginBorderAndPadding = [&](auto& layoutBox) { |
| auto& style = layoutBox.style(); |
| return fixedValue(style.marginStart()).value_or(0) |
| + LayoutUnit { style.borderLeftWidth() } |
| + fixedValue(style.paddingLeft()).value_or(0) |
| + fixedValue(style.paddingRight()).value_or(0) |
| + LayoutUnit { style.borderRightWidth() } |
| + fixedValue(style.marginEnd()).value_or(0); |
| }; |
| |
| auto computedIntrinsicWidthConstraints = [&]() -> IntrinsicWidthConstraints { |
| auto logicalWidth = flexItem.style().logicalWidth(); |
| // Minimum/maximum width can't be depending on the containing block's width. |
| auto needsResolvedContainingBlockWidth = logicalWidth.isCalculated() || logicalWidth.isPercent() || logicalWidth.isRelative(); |
| if (needsResolvedContainingBlockWidth) |
| return { }; |
| |
| if (auto width = fixedValue(logicalWidth)) |
| return { *width, *width }; |
| |
| ASSERT(flexItem.establishesFormattingContext()); |
| auto& layoutState = this->layoutState(); |
| auto intrinsicWidthConstraints = LayoutContext::createFormattingContext(flexItem, const_cast<LayoutState&>(layoutState))->computedIntrinsicWidthConstraints(); |
| if (logicalWidth.isMinContent()) |
| return { intrinsicWidthConstraints.minimum, intrinsicWidthConstraints.minimum }; |
| if (logicalWidth.isMaxContent()) |
| return { intrinsicWidthConstraints.maximum, intrinsicWidthConstraints.maximum }; |
| return intrinsicWidthConstraints; |
| }; |
| auto intrinsicWidthConstraints = constrainByMinMaxWidth(flexItem, computedIntrinsicWidthConstraints()); |
| intrinsicWidthConstraints.expand(fixedMarginBorderAndPadding(flexItem)); |
| return intrinsicWidthConstraints; |
| } |
| |
| } |
| } |
| |
| #endif |