1/*
2 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB.  If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 *
19 */
20
21#include "config.h"
22
23#if ENABLE(PROGRESS_TAG)
24
25#include "RenderProgress.h"
26
27#include "HTMLNames.h"
28#include "HTMLProgressElement.h"
29#include "PaintInfo.h"
30#include "RenderTheme.h"
31#include "ShadowElement.h"
32#include <wtf/CurrentTime.h>
33#include <wtf/RefPtr.h>
34
35using namespace std;
36
37namespace WebCore {
38
39RenderProgress::RenderProgress(HTMLProgressElement* element)
40    : RenderBlock(element)
41    , m_position(HTMLProgressElement::InvalidPosition)
42    , m_animationStartTime(0)
43    , m_animationRepeatInterval(0)
44    , m_animationDuration(0)
45    , m_animating(false)
46    , m_animationTimer(this, &RenderProgress::animationTimerFired)
47{
48}
49
50RenderProgress::~RenderProgress()
51{
52}
53
54void RenderProgress::updateFromElement()
55{
56    HTMLProgressElement* element = progressElement();
57    if (m_position == element->position())
58        return;
59    m_position = element->position();
60
61    updateAnimationState();
62    RenderBlock::updateFromElement();
63}
64
65double RenderProgress::animationProgress() const
66{
67    return m_animating ? (fmod((currentTime() - m_animationStartTime), m_animationDuration) / m_animationDuration) : 0;
68}
69
70bool RenderProgress::isDeterminate() const
71{
72    return (HTMLProgressElement::IndeterminatePosition != position()
73            && HTMLProgressElement::InvalidPosition != position());
74}
75
76void RenderProgress::animationTimerFired(Timer<RenderProgress>*)
77{
78    repaint();
79    if (!m_animationTimer.isActive() && m_animating)
80        m_animationTimer.startOneShot(m_animationRepeatInterval);
81}
82
83void RenderProgress::updateAnimationState()
84{
85    m_animationDuration = theme()->animationDurationForProgressBar(this);
86    m_animationRepeatInterval = theme()->animationRepeatIntervalForProgressBar(this);
87
88    bool animating = style()->hasAppearance() && m_animationDuration > 0;
89    if (animating == m_animating)
90        return;
91
92    m_animating = animating;
93    if (m_animating) {
94        m_animationStartTime = currentTime();
95        m_animationTimer.startOneShot(m_animationRepeatInterval);
96    } else
97        m_animationTimer.stop();
98}
99
100HTMLProgressElement* RenderProgress::progressElement() const
101{
102    return static_cast<HTMLProgressElement*>(node());
103}
104
105} // namespace WebCore
106
107#endif
108