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/*
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
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