| /* |
| * Copyright (C) 2006, 2007, 2008, 2009, 2010 Apple 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 "core/rendering/RenderSlider.h" |
| |
| #include "core/dom/shadow/ShadowRoot.h" |
| #include "core/html/HTMLInputElement.h" |
| #include "core/html/shadow/ShadowElementNames.h" |
| #include "core/html/shadow/SliderThumbElement.h" |
| #include "core/rendering/LayoutRectRecorder.h" |
| #include "wtf/MathExtras.h" |
| |
| using std::min; |
| |
| namespace WebCore { |
| |
| const int RenderSlider::defaultTrackLength = 129; |
| |
| RenderSlider::RenderSlider(HTMLInputElement* element) |
| : RenderFlexibleBox(element) |
| { |
| // We assume RenderSlider works only with <input type=range>. |
| ASSERT(element->isRangeControl()); |
| } |
| |
| RenderSlider::~RenderSlider() |
| { |
| } |
| |
| int RenderSlider::baselinePosition(FontBaseline, bool /*firstLine*/, LineDirectionMode, LinePositionMode linePositionMode) const |
| { |
| ASSERT(linePositionMode == PositionOnContainingLine); |
| // FIXME: Patch this function for writing-mode. |
| return height() + marginTop(); |
| } |
| |
| void RenderSlider::computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const |
| { |
| maxLogicalWidth = defaultTrackLength * style()->effectiveZoom(); |
| if (!style()->width().isPercent()) |
| minLogicalWidth = maxLogicalWidth; |
| } |
| |
| void RenderSlider::computePreferredLogicalWidths() |
| { |
| m_minPreferredLogicalWidth = 0; |
| m_maxPreferredLogicalWidth = 0; |
| |
| if (style()->width().isFixed() && style()->width().value() > 0) |
| m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = adjustContentBoxLogicalWidthForBoxSizing(style()->width().value()); |
| else |
| computeIntrinsicLogicalWidths(m_minPreferredLogicalWidth, m_maxPreferredLogicalWidth); |
| |
| if (style()->minWidth().isFixed() && style()->minWidth().value() > 0) { |
| m_maxPreferredLogicalWidth = max(m_maxPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style()->minWidth().value())); |
| m_minPreferredLogicalWidth = max(m_minPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style()->minWidth().value())); |
| } |
| |
| if (style()->maxWidth().isFixed()) { |
| m_maxPreferredLogicalWidth = min(m_maxPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style()->maxWidth().value())); |
| m_minPreferredLogicalWidth = min(m_minPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(style()->maxWidth().value())); |
| } |
| |
| LayoutUnit toAdd = borderAndPaddingWidth(); |
| m_minPreferredLogicalWidth += toAdd; |
| m_maxPreferredLogicalWidth += toAdd; |
| |
| clearPreferredLogicalWidthsDirty(); |
| } |
| |
| inline SliderThumbElement* RenderSlider::sliderThumbElement() const |
| { |
| return toSliderThumbElement(toElement(node())->userAgentShadowRoot()->getElementById(ShadowElementNames::sliderThumb())); |
| } |
| |
| void RenderSlider::layout() |
| { |
| LayoutRectRecorder recorder(*this); |
| // FIXME: Find a way to cascade appearance. |
| // http://webkit.org/b/62535 |
| RenderBox* thumbBox = sliderThumbElement()->renderBox(); |
| if (thumbBox && thumbBox->isSliderThumb()) |
| static_cast<RenderSliderThumb*>(thumbBox)->updateAppearance(style()); |
| |
| RenderFlexibleBox::layout(); |
| } |
| |
| bool RenderSlider::inDragMode() const |
| { |
| return sliderThumbElement()->active(); |
| } |
| |
| } // namespace WebCore |