WebCore/rendering/RenderProgress.cpp
changeset 0 4f2f89ce4247
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/rendering/RenderProgress.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,152 @@
+/*
+ * 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(PROGRESS_TAG)
+
+#include "RenderProgress.h"
+
+#include "HTMLNames.h"
+#include "HTMLProgressElement.h"
+#include "RenderTheme.h"
+#include "ShadowElement.h"
+#include <wtf/CurrentTime.h>
+#include <wtf/RefPtr.h>
+
+using namespace std;
+
+namespace WebCore {
+
+RenderProgress::RenderProgress(HTMLProgressElement* element)
+    : RenderIndicator(element)
+    , m_position(-1)
+    , m_animationStartTime(0)
+    , m_animationRepeatInterval(0)
+    , m_animationDuration(0)
+    , m_animating(false)
+    , m_animationTimer(this, &RenderProgress::animationTimerFired)
+{
+}
+
+RenderProgress::~RenderProgress()
+{
+    if (m_valuePart)
+        m_valuePart->detach();
+}
+
+void RenderProgress::updateFromElement()
+{
+    HTMLProgressElement* element = progressElement();
+    if (m_position == element->position())
+        return;
+    m_position = element->position();
+
+    updateAnimationState();
+    RenderIndicator::updateFromElement();
+}
+
+double RenderProgress::animationProgress() const
+{
+    return m_animating ? (fmod((currentTime() - m_animationStartTime), m_animationDuration) / m_animationDuration) : 0;
+}
+
+bool RenderProgress::isDeterminate() const
+{
+    return 0 <= position();
+}
+
+void RenderProgress::animationTimerFired(Timer<RenderProgress>*)
+{
+    repaint();
+}
+
+void RenderProgress::paint(PaintInfo& paintInfo, int tx, int ty)
+{
+    if (paintInfo.phase == PaintPhaseBlockBackground) {
+        if (!m_animationTimer.isActive() && m_animating)
+            m_animationTimer.startOneShot(m_animationRepeatInterval);
+    }
+
+    RenderIndicator::paint(paintInfo, tx, ty);
+}
+
+void RenderProgress::layoutParts()
+{
+    updatePartsState();
+    if (m_valuePart)
+        m_valuePart->layoutAsPart(valuePartRect());
+    updateAnimationState();
+}
+
+bool RenderProgress::shouldHaveParts() const
+{
+    if (!style()->hasAppearance())
+        return true;
+    if (ShadowBlockElement::partShouldHaveStyle(this, PROGRESS_BAR_VALUE))
+        return true;
+    return false;
+}
+
+void RenderProgress::updatePartsState()
+{
+    if (shouldHaveParts() && !m_valuePart) {
+        style()->setAppearance(NoControlPart);
+        m_valuePart = ShadowBlockElement::createForPart(this->node(), PROGRESS_BAR_VALUE);
+        addChild(m_valuePart->renderer());
+    } else if (!shouldHaveParts() && m_valuePart) {
+        m_valuePart->detach();
+        m_valuePart = 0;
+    }
+}
+
+void RenderProgress::updateAnimationState()
+{
+    m_animationDuration = theme()->animationDurationForProgressBar(this);
+    m_animationRepeatInterval = theme()->animationRepeatIntervalForProgressBar(this);
+
+    bool animating = style()->hasAppearance() && m_animationDuration > 0;
+    if (animating == m_animating)
+        return;
+
+    m_animating = animating;
+    if (m_animating) {
+        m_animationStartTime = currentTime();
+        m_animationTimer.startOneShot(m_animationRepeatInterval);
+    } else
+        m_animationTimer.stop();
+}
+
+IntRect RenderProgress::valuePartRect() const
+{
+    IntRect rect(borderLeft() + paddingLeft(), borderTop() + paddingTop(), lround((width() - borderLeft() - paddingLeft() - borderRight() - paddingRight()) * position()), height()  - borderTop() - paddingTop() - borderBottom() - paddingBottom());
+    if (style()->direction() == RTL)
+        rect.setX(width() - borderRight() - paddingRight() - rect.width());
+    return rect;
+}
+
+HTMLProgressElement* RenderProgress::progressElement() const
+{
+    return static_cast<HTMLProgressElement*>(node());
+}    
+
+} // namespace WebCore
+
+#endif