Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 261 insertions, 0 deletions

diff --git a/Source/WebCore/rendering/RenderMeter.cpp b/Source/WebCore/rendering/RenderMeter.cpp
new file mode 100644
index 0000000..6439651
--- /dev/null
+++ b/Source/WebCore/rendering/RenderMeter.cpp
@@ -0,0 +1,261 @@
+/*
+ * 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 "config.h"
+
+#if ENABLE(METER_TAG)
+
+#include "RenderMeter.h"
+
+#include "HTMLMeterElement.h"
+#include "HTMLNames.h"
+#include "RenderTheme.h"
+#include "ShadowElement.h"
+
+using namespace std;
+
+namespace WebCore {
+
+using namespace HTMLNames;
+
+class MeterPartElement : public ShadowBlockElement {
+public:
+    static PassRefPtr<MeterPartElement> createForPart(HTMLElement*, PseudoId);
+
+    void hide();
+    void restoreVisibility();
+
+    virtual void updateStyleForPart(PseudoId);
+
+private:
+    MeterPartElement(HTMLElement*);
+    void saveVisibility();
+
+    EVisibility m_originalVisibility;
+};
+
+MeterPartElement::MeterPartElement(HTMLElement* shadowParent)
+    : ShadowBlockElement(shadowParent)
+{
+}
+
+PassRefPtr<MeterPartElement> MeterPartElement::createForPart(HTMLElement* shadowParent, PseudoId pseudoId)
+{
+    RefPtr<MeterPartElement> ret = adoptRef(new MeterPartElement(shadowParent));
+    ret->initAsPart(pseudoId);
+    ret->saveVisibility();
+    return ret;
+}
+
+void MeterPartElement::hide()
+{
+    if (renderer())
+        renderer()->style()->setVisibility(HIDDEN);
+}
+
+void MeterPartElement::restoreVisibility()
+{
+    if (renderer())
+        renderer()->style()->setVisibility(m_originalVisibility);
+}
+
+void MeterPartElement::updateStyleForPart(PseudoId pseudoId)
+{
+    if (renderer()->style()->styleType() == pseudoId)
+        return;
+
+    ShadowBlockElement::updateStyleForPart(pseudoId);
+    saveVisibility();
+}
+
+void MeterPartElement::saveVisibility()
+{
+    m_originalVisibility = renderer()->style()->visibility();
+}
+
+RenderMeter::RenderMeter(HTMLMeterElement* element)
+    : RenderIndicator(element)
+{
+}
+
+RenderMeter::~RenderMeter()
+{
+    if (shadowAttached()) {
+        m_verticalValuePart->detach();
+        m_verticalBarPart->detach();
+        m_horizontalValuePart->detach();
+        m_horizontalBarPart->detach();
+    }
+}
+
+PassRefPtr<MeterPartElement> RenderMeter::createPart(PseudoId pseudoId)
+{
+    RefPtr<MeterPartElement> element = MeterPartElement::createForPart(static_cast<HTMLElement*>(node()), pseudoId);
+    if (element->renderer())
+        addChild(element->renderer());
+    return element;
+}
+
+void RenderMeter::updateFromElement()
+{
+    if (!shadowAttached()) {
+        m_horizontalBarPart = createPart(barPseudoId(HORIZONTAL));
+        m_horizontalValuePart = createPart(valuePseudoId(HORIZONTAL));
+        m_verticalBarPart = createPart(barPseudoId(VERTICAL));
+        m_verticalValuePart = createPart(valuePseudoId(VERTICAL));
+    }
+
+    m_horizontalBarPart->updateStyleForPart(barPseudoId(HORIZONTAL));
+    m_horizontalValuePart->updateStyleForPart(valuePseudoId(HORIZONTAL));
+    m_verticalBarPart->updateStyleForPart(barPseudoId(VERTICAL));
+    m_verticalValuePart->updateStyleForPart(valuePseudoId(VERTICAL));
+    RenderIndicator::updateFromElement();
+}
+
+void RenderMeter::computeLogicalWidth()
+{
+    RenderBox::computeLogicalWidth();
+    setWidth(theme()->meterSizeForBounds(this, frameRect()).width());
+}
+
+void RenderMeter::computeLogicalHeight()
+{
+    RenderBox::computeLogicalHeight();
+    setHeight(theme()->meterSizeForBounds(this, frameRect()).height());
+}
+
+void RenderMeter::layoutParts()
+{
+    m_horizontalBarPart->layoutAsPart(barPartRect());
+    m_horizontalValuePart->layoutAsPart(valuePartRect(HORIZONTAL));
+    m_verticalBarPart->layoutAsPart(barPartRect());
+    m_verticalValuePart->layoutAsPart(valuePartRect(VERTICAL));
+
+    if (shouldHaveParts()) {
+        if (HORIZONTAL == orientation()) {
+            m_verticalBarPart->hide();
+            m_verticalValuePart->hide();
+            m_horizontalBarPart->restoreVisibility();
+            m_horizontalValuePart->restoreVisibility();
+        } else {
+            m_verticalBarPart->restoreVisibility();
+            m_verticalValuePart->restoreVisibility();
+            m_horizontalBarPart->hide();
+            m_horizontalValuePart->hide();
+        }
+    } else {
+        m_verticalBarPart->hide();
+        m_verticalValuePart->hide();
+        m_horizontalBarPart->hide();
+        m_horizontalValuePart->hide();
+    }
+}
+
+bool RenderMeter::shouldHaveParts() const
+{
+    EBoxOrient currentOrientation = orientation();
+    bool hasTheme = theme()->supportsMeter(style()->appearance(), HORIZONTAL == currentOrientation);
+    if (!hasTheme)
+        return true;
+    bool shadowsHaveStyle = ShadowBlockElement::partShouldHaveStyle(this, barPseudoId(currentOrientation)) || ShadowBlockElement::partShouldHaveStyle(this, valuePseudoId(currentOrientation));
+    if (shadowsHaveStyle)
+        return true;
+    return false;
+}
+
+double RenderMeter::valueRatio() const
+{
+    HTMLMeterElement* element = static_cast<HTMLMeterElement*>(node());
+    double min = element->min();
+    double max = element->max();
+    double value = element->value();
+
+    if (max <= min)
+        return 0;
+    return (value - min) / (max - min);
+}
+
+IntRect RenderMeter::barPartRect() const
+{
+    return IntRect(borderLeft() + paddingLeft(), borderTop() + paddingTop(), lround(width() - borderLeft() - paddingLeft() - borderRight() - paddingRight()), height()  - borderTop() - paddingTop() - borderBottom() - paddingBottom());
+}
+
+IntRect RenderMeter::valuePartRect(EBoxOrient asOrientation) const
+{
+    IntRect rect = barPartRect();
+    
+    if (HORIZONTAL == asOrientation) {
+        int width = static_cast<int>(rect.width()*valueRatio());
+        if (!style()->isLeftToRightDirection()) {
+            rect.setX(rect.x() + (rect.width() - width));
+            rect.setWidth(width);
+        } else
+            rect.setWidth(width);
+    } else {
+        int height = static_cast<int>(rect.height()*valueRatio());
+        rect.setY(rect.y() + (rect.height() - height));
+        rect.setHeight(height);
+    }
+
+    return rect;
+}
+
+EBoxOrient RenderMeter::orientation() const
+{
+    IntRect rect = barPartRect();
+    return rect.height() <= rect.width() ? HORIZONTAL : VERTICAL;
+}
+
+PseudoId RenderMeter::valuePseudoId(EBoxOrient asOrientation) const
+{
+    HTMLMeterElement* element = static_cast<HTMLMeterElement*>(node());
+
+    if (HORIZONTAL == asOrientation) {
+        switch (element->gaugeRegion()) {
+        case HTMLMeterElement::GaugeRegionOptimum:
+            return METER_HORIZONTAL_OPTIMUM;
+        case HTMLMeterElement::GaugeRegionSuboptimal:
+            return METER_HORIZONTAL_SUBOPTIMAL;
+        case HTMLMeterElement::GaugeRegionEvenLessGood:
+            return METER_HORIZONTAL_EVEN_LESS_GOOD;
+        }
+    } else {
+        switch (element->gaugeRegion()) {
+        case HTMLMeterElement::GaugeRegionOptimum:
+            return METER_VERTICAL_OPTIMUM;
+        case HTMLMeterElement::GaugeRegionSuboptimal:
+            return METER_VERTICAL_SUBOPTIMAL;
+        case HTMLMeterElement::GaugeRegionEvenLessGood:
+            return METER_VERTICAL_EVEN_LESS_GOOD;
+        }
+    }
+
+    ASSERT_NOT_REACHED();
+    return NOPSEUDO;
+}
+
+PseudoId RenderMeter::barPseudoId(EBoxOrient asOrientation) const
+{
+    return HORIZONTAL == asOrientation ? METER_HORIZONTAL_BAR : METER_VERTICAL_BAR;
+}
+
+} // namespace WebCore
+
+#endif