| /* |
| Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| Copyright (C) 2006, 2008 Apple Inc. All rights reserved. |
| Copyright (C) 2011 Rik Cabanier (cabanier@adobe.com) |
| Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved. |
| Copyright (C) 2012 Motorola Mobility, Inc. All rights reserved. |
| |
| 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 "LengthFunctions.h" |
| |
| #include "LayoutUnit.h" |
| #include "Length.h" |
| #include "RenderView.h" |
| |
| namespace WebCore { |
| |
| int minimumIntValueForLength(const Length& length, LayoutUnit maximumValue, RenderView* renderView, bool roundPercentages) |
| { |
| return static_cast<int>(minimumValueForLength(length, maximumValue, renderView, roundPercentages)); |
| } |
| |
| int intValueForLength(const Length& length, LayoutUnit maximumValue, RenderView* renderView, bool roundPercentages) |
| { |
| return static_cast<int>(valueForLength(length, maximumValue, renderView, roundPercentages)); |
| } |
| |
| LayoutUnit minimumValueForLength(const Length& length, LayoutUnit maximumValue, RenderView* renderView, bool roundPercentages) |
| { |
| switch (length.type()) { |
| case Fixed: |
| return length.value(); |
| case Percent: |
| if (roundPercentages) |
| return static_cast<LayoutUnit>(round(maximumValue * length.percent() / 100.0f)); |
| // Don't remove the extra cast to float. It is needed for rounding on 32-bit Intel machines that use the FPU stack. |
| return static_cast<LayoutUnit>(static_cast<float>(maximumValue * length.percent() / 100.0f)); |
| case Calculated: |
| return length.nonNanCalculatedValue(maximumValue); |
| case ViewportPercentageWidth: |
| if (renderView) |
| return static_cast<LayoutUnit>(renderView->viewportSize().width() * length.viewportPercentageLength() / 100.0f); |
| return 0; |
| case ViewportPercentageHeight: |
| if (renderView) |
| return static_cast<LayoutUnit>(renderView->viewportSize().height() * length.viewportPercentageLength() / 100.0f); |
| return 0; |
| case ViewportPercentageMin: |
| if (renderView) { |
| IntSize viewportSize = renderView->viewportSize(); |
| return static_cast<LayoutUnit>(std::min(viewportSize.width(), viewportSize.height()) * length.viewportPercentageLength() / 100.0f); |
| } |
| return 0; |
| case ViewportPercentageMax: |
| if (renderView) { |
| IntSize viewportSize = renderView->viewportSize(); |
| return static_cast<LayoutUnit>(std::max(viewportSize.width(), viewportSize.height()) * length.viewportPercentageLength() / 100.0f); |
| } |
| return 0; |
| case FillAvailable: |
| case Auto: |
| return 0; |
| case Relative: |
| case Intrinsic: |
| case MinIntrinsic: |
| case MinContent: |
| case MaxContent: |
| case FitContent: |
| case Undefined: |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| |
| LayoutUnit valueForLength(const Length& length, LayoutUnit maximumValue, RenderView* renderView, bool roundPercentages) |
| { |
| switch (length.type()) { |
| case Fixed: |
| case Percent: |
| case Calculated: |
| case ViewportPercentageWidth: |
| case ViewportPercentageHeight: |
| case ViewportPercentageMin: |
| case ViewportPercentageMax: |
| return minimumValueForLength(length, maximumValue, renderView, roundPercentages); |
| case FillAvailable: |
| case Auto: |
| return maximumValue; |
| case Relative: |
| case Intrinsic: |
| case MinIntrinsic: |
| case MinContent: |
| case MaxContent: |
| case FitContent: |
| case Undefined: |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| |
| // FIXME: when subpixel layout is supported this copy of floatValueForLength() can be removed. See bug 71143. |
| float floatValueForLength(const Length& length, LayoutUnit maximumValue, RenderView* renderView) |
| { |
| switch (length.type()) { |
| case Fixed: |
| return length.getFloatValue(); |
| case Percent: |
| return static_cast<float>(maximumValue * length.percent() / 100.0f); |
| case FillAvailable: |
| case Auto: |
| return static_cast<float>(maximumValue); |
| case Calculated: |
| return length.nonNanCalculatedValue(maximumValue); |
| case ViewportPercentageWidth: |
| if (renderView) |
| return static_cast<int>(renderView->viewportSize().width() * length.viewportPercentageLength() / 100.0f); |
| return 0; |
| case ViewportPercentageHeight: |
| if (renderView) |
| return static_cast<int>(renderView->viewportSize().height() * length.viewportPercentageLength() / 100.0f); |
| return 0; |
| case ViewportPercentageMin: |
| if (renderView) { |
| IntSize viewportSize = renderView->viewportSize(); |
| return static_cast<int>(std::min(viewportSize.width(), viewportSize.height()) * length.viewportPercentageLength() / 100.0f); |
| } |
| return 0; |
| case ViewportPercentageMax: |
| if (renderView) { |
| IntSize viewportSize = renderView->viewportSize(); |
| return static_cast<int>(std::max(viewportSize.width(), viewportSize.height()) * length.viewportPercentageLength() / 100.0f); |
| } |
| return 0; |
| case Relative: |
| case Intrinsic: |
| case MinIntrinsic: |
| case MinContent: |
| case MaxContent: |
| case FitContent: |
| case Undefined: |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| |
| float floatValueForLength(const Length& length, float maximumValue, RenderView* renderView) |
| { |
| switch (length.type()) { |
| case Fixed: |
| return length.getFloatValue(); |
| case Percent: |
| return static_cast<float>(maximumValue * length.percent() / 100.0f); |
| case FillAvailable: |
| case Auto: |
| return static_cast<float>(maximumValue); |
| case Calculated: |
| return length.nonNanCalculatedValue(maximumValue); |
| case ViewportPercentageWidth: |
| if (renderView) |
| return static_cast<int>(renderView->viewportSize().width() * length.viewportPercentageLength() / 100.0f); |
| return 0; |
| case ViewportPercentageHeight: |
| if (renderView) |
| return static_cast<int>(renderView->viewportSize().height() * length.viewportPercentageLength() / 100.0f); |
| return 0; |
| case ViewportPercentageMin: |
| if (renderView) { |
| IntSize viewportSize = renderView->viewportSize(); |
| return static_cast<int>(std::min(viewportSize.width(), viewportSize.height()) * length.viewportPercentageLength() / 100.0f); |
| } |
| return 0; |
| case ViewportPercentageMax: |
| if (renderView) { |
| IntSize viewportSize = renderView->viewportSize(); |
| return static_cast<int>(std::max(viewportSize.width(), viewportSize.height()) * length.viewportPercentageLength() / 100.0f); |
| } |
| return 0; |
| case Relative: |
| case Intrinsic: |
| case MinIntrinsic: |
| case MinContent: |
| case MaxContent: |
| case FitContent: |
| case Undefined: |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| |
| } // namespace WebCore |
