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Diffstat (limited to 'WebCore/rendering/RenderMarquee.cpp')
-rw-r--r-- | WebCore/rendering/RenderMarquee.cpp | 311 |
1 files changed, 0 insertions, 311 deletions
diff --git a/WebCore/rendering/RenderMarquee.cpp b/WebCore/rendering/RenderMarquee.cpp deleted file mode 100644 index 96d26ea..0000000 --- a/WebCore/rendering/RenderMarquee.cpp +++ /dev/null @@ -1,311 +0,0 @@ -/* - * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved. - * - * Portions are Copyright (C) 1998 Netscape Communications Corporation. - * - * Other contributors: - * Robert O'Callahan <roc+@cs.cmu.edu> - * David Baron <dbaron@fas.harvard.edu> - * Christian Biesinger <cbiesinger@web.de> - * Randall Jesup <rjesup@wgate.com> - * Roland Mainz <roland.mainz@informatik.med.uni-giessen.de> - * Josh Soref <timeless@mac.com> - * Boris Zbarsky <bzbarsky@mit.edu> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * - * Alternatively, the contents of this file may be used under the terms - * of either the Mozilla Public License Version 1.1, found at - * http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public - * License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html - * (the "GPL"), in which case the provisions of the MPL or the GPL are - * applicable instead of those above. If you wish to allow use of your - * version of this file only under the terms of one of those two - * licenses (the MPL or the GPL) and not to allow others to use your - * version of this file under the LGPL, indicate your decision by - * deletingthe provisions above and replace them with the notice and - * other provisions required by the MPL or the GPL, as the case may be. - * If you do not delete the provisions above, a recipient may use your - * version of this file under any of the LGPL, the MPL or the GPL. - */ - -#include "config.h" - -#include "RenderMarquee.h" - -#include "FrameView.h" -#include "HTMLMarqueeElement.h" -#include "HTMLNames.h" -#include "RenderLayer.h" - -using namespace std; - -namespace WebCore { - -using namespace HTMLNames; - -RenderMarquee::RenderMarquee(RenderLayer* l) - : m_layer(l), m_currentLoop(0) - , m_totalLoops(0) - , m_timer(this, &RenderMarquee::timerFired) - , m_start(0), m_end(0), m_speed(0), m_reset(false) - , m_suspended(false), m_stopped(false), m_direction(MAUTO) -{ -} - -int RenderMarquee::marqueeSpeed() const -{ - int result = m_layer->renderer()->style()->marqueeSpeed(); - Node* elt = m_layer->renderer()->element(); - if (elt && elt->hasTagName(marqueeTag)) { - HTMLMarqueeElement* marqueeElt = static_cast<HTMLMarqueeElement*>(elt); - result = max(result, marqueeElt->minimumDelay()); - } - return result; -} - -EMarqueeDirection RenderMarquee::direction() const -{ - // FIXME: Support the CSS3 "auto" value for determining the direction of the marquee. - // For now just map MAUTO to MBACKWARD - EMarqueeDirection result = m_layer->renderer()->style()->marqueeDirection(); - TextDirection dir = m_layer->renderer()->style()->direction(); - if (result == MAUTO) - result = MBACKWARD; - if (result == MFORWARD) - result = (dir == LTR) ? MRIGHT : MLEFT; - if (result == MBACKWARD) - result = (dir == LTR) ? MLEFT : MRIGHT; - - // Now we have the real direction. Next we check to see if the increment is negative. - // If so, then we reverse the direction. - Length increment = m_layer->renderer()->style()->marqueeIncrement(); - if (increment.isNegative()) - result = static_cast<EMarqueeDirection>(-result); - - return result; -} - -bool RenderMarquee::isHorizontal() const -{ - return direction() == MLEFT || direction() == MRIGHT; -} - -int RenderMarquee::computePosition(EMarqueeDirection dir, bool stopAtContentEdge) -{ - RenderObject* o = m_layer->renderer(); - RenderStyle* s = o->style(); - if (isHorizontal()) { - bool ltr = s->direction() == LTR; - int clientWidth = o->clientWidth(); - int contentWidth = ltr ? o->rightmostPosition(true, false) : o->leftmostPosition(true, false); - if (ltr) - contentWidth += (o->paddingRight() - o->borderLeft()); - else { - contentWidth = o->width() - contentWidth; - contentWidth += (o->paddingLeft() - o->borderRight()); - } - if (dir == MRIGHT) { - if (stopAtContentEdge) - return max(0, ltr ? (contentWidth - clientWidth) : (clientWidth - contentWidth)); - else - return ltr ? contentWidth : clientWidth; - } - else { - if (stopAtContentEdge) - return min(0, ltr ? (contentWidth - clientWidth) : (clientWidth - contentWidth)); - else - return ltr ? -clientWidth : -contentWidth; - } - } - else { - int contentHeight = m_layer->renderer()->lowestPosition(true, false) - - m_layer->renderer()->borderTop() + m_layer->renderer()->paddingBottom(); - int clientHeight = m_layer->renderer()->clientHeight(); - if (dir == MUP) { - if (stopAtContentEdge) - return min(contentHeight - clientHeight, 0); - else - return -clientHeight; - } - else { - if (stopAtContentEdge) - return max(contentHeight - clientHeight, 0); - else - return contentHeight; - } - } -} - -void RenderMarquee::start() -{ - if (m_timer.isActive() || m_layer->renderer()->style()->marqueeIncrement().isZero()) - return; - - // We may end up propagating a scroll event. It is important that we suspend events until - // the end of the function since they could delete the layer, including the marquee. - FrameView* frameView = m_layer->renderer()->document()->view(); - if (frameView) - frameView->pauseScheduledEvents(); - - if (!m_suspended && !m_stopped) { - if (isHorizontal()) - m_layer->scrollToOffset(m_start, 0, false, false); - else - m_layer->scrollToOffset(0, m_start, false, false); - } - else { - m_suspended = false; - m_stopped = false; - } - - m_timer.startRepeating(speed() * 0.001); - - if (frameView) - frameView->resumeScheduledEvents(); -} - -void RenderMarquee::suspend() -{ - m_timer.stop(); - m_suspended = true; -} - -void RenderMarquee::stop() -{ - m_timer.stop(); - m_stopped = true; -} - -void RenderMarquee::updateMarqueePosition() -{ - bool activate = (m_totalLoops <= 0 || m_currentLoop < m_totalLoops); - if (activate) { - EMarqueeBehavior behavior = m_layer->renderer()->style()->marqueeBehavior(); - m_start = computePosition(direction(), behavior == MALTERNATE); - m_end = computePosition(reverseDirection(), behavior == MALTERNATE || behavior == MSLIDE); - if (!m_stopped) - start(); - } -} - -void RenderMarquee::updateMarqueeStyle() -{ - RenderStyle* s = m_layer->renderer()->style(); - - if (m_direction != s->marqueeDirection() || (m_totalLoops != s->marqueeLoopCount() && m_currentLoop >= m_totalLoops)) - m_currentLoop = 0; // When direction changes or our loopCount is a smaller number than our current loop, reset our loop. - - m_totalLoops = s->marqueeLoopCount(); - m_direction = s->marqueeDirection(); - - if (m_layer->renderer()->isHTMLMarquee()) { - // Hack for WinIE. In WinIE, a value of 0 or lower for the loop count for SLIDE means to only do - // one loop. - if (m_totalLoops <= 0 && s->marqueeBehavior() == MSLIDE) - m_totalLoops = 1; - - // Hack alert: Set the white-space value to nowrap for horizontal marquees with inline children, thus ensuring - // all the text ends up on one line by default. Limit this hack to the <marquee> element to emulate - // WinIE's behavior. Someone using CSS3 can use white-space: nowrap on their own to get this effect. - // Second hack alert: Set the text-align back to auto. WinIE completely ignores text-align on the - // marquee element. - // FIXME: Bring these up with the CSS WG. - if (isHorizontal() && m_layer->renderer()->childrenInline()) { - s->setWhiteSpace(NOWRAP); - s->setTextAlign(TAAUTO); - } - } - - // Marquee height hack!! Make sure that, if it is a horizontal marquee, the height attribute is overridden - // if it is smaller than the font size. If it is a vertical marquee and height is not specified, we default - // to a marquee of 200px. - if (isHorizontal()) { - if (s->height().isFixed() && s->height().value() < s->fontSize()) - s->setHeight(Length(s->fontSize(),Fixed)); - } else if (s->height().isAuto()) //vertical marquee with no specified height - s->setHeight(Length(200, Fixed)); - - if (speed() != marqueeSpeed()) { - m_speed = marqueeSpeed(); - if (m_timer.isActive()) - m_timer.startRepeating(speed() * 0.001); - } - - // Check the loop count to see if we should now stop. - bool activate = (m_totalLoops <= 0 || m_currentLoop < m_totalLoops); - if (activate && !m_timer.isActive()) - m_layer->renderer()->setNeedsLayout(true); - else if (!activate && m_timer.isActive()) - m_timer.stop(); -} - -void RenderMarquee::timerFired(Timer<RenderMarquee>*) -{ - if (m_layer->renderer()->needsLayout()) - return; - - if (m_reset) { - m_reset = false; - if (isHorizontal()) - m_layer->scrollToXOffset(m_start); - else - m_layer->scrollToYOffset(m_start); - return; - } - - RenderStyle* s = m_layer->renderer()->style(); - - int endPoint = m_end; - int range = m_end - m_start; - int newPos; - if (range == 0) - newPos = m_end; - else { - bool addIncrement = direction() == MUP || direction() == MLEFT; - bool isReversed = s->marqueeBehavior() == MALTERNATE && m_currentLoop % 2; - if (isReversed) { - // We're going in the reverse direction. - endPoint = m_start; - range = -range; - addIncrement = !addIncrement; - } - bool positive = range > 0; - int clientSize = (isHorizontal() ? m_layer->renderer()->clientWidth() : m_layer->renderer()->clientHeight()); - int increment = max(1, abs(m_layer->renderer()->style()->marqueeIncrement().calcValue(clientSize))); - int currentPos = (isHorizontal() ? m_layer->scrollXOffset() : m_layer->scrollYOffset()); - newPos = currentPos + (addIncrement ? increment : -increment); - if (positive) - newPos = min(newPos, endPoint); - else - newPos = max(newPos, endPoint); - } - - if (newPos == endPoint) { - m_currentLoop++; - if (m_totalLoops > 0 && m_currentLoop >= m_totalLoops) - m_timer.stop(); - else if (s->marqueeBehavior() != MALTERNATE) - m_reset = true; - } - - if (isHorizontal()) - m_layer->scrollToXOffset(newPos); - else - m_layer->scrollToYOffset(newPos); -} - -} // namespace WebCore - |