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605 lines
21 KiB
605 lines
21 KiB
/**
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* This file is part of the DOM implementation for KDE.
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*
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* Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
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* (C) 1999 Antti Koivisto (koivisto@kde.org)
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* (C) 2000-2003 Dirk Mueller (mueller@kde.org)
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* (C) 2003 Apple Computer, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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//#define DEBUG_LAYOUT
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#include "render_image.h"
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#include "render_canvas.h"
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#include <tqdrawutil.h>
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#include <tqpainter.h>
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#include <kapplication.h>
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#include <kdebug.h>
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#include <kglobalsettings.h>
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#include "css/csshelper.h"
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#include "misc/helper.h"
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#include "misc/htmlattrs.h"
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#include "misc/loader.h"
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#include "misc/htmltags.h"
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#include "html/html_formimpl.h"
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#include "html/html_imageimpl.h"
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#include "html/dtd.h"
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#include "xml/dom2_eventsimpl.h"
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#include "html/html_documentimpl.h"
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#include "html/html_objectimpl.h"
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#include "khtmlview.h"
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#include "khtml_part.h"
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#include <math.h>
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#include "loading_icon.cpp"
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using namespace DOM;
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using namespace khtml;
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// -------------------------------------------------------------------------
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RenderImage::RenderImage(NodeImpl *_element)
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: RenderReplaced(_element)
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{
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m_oldImage = m_cachedImage = 0;
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m_selectionState = SelectionNone;
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berrorPic = false;
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const KHTMLSettings *settings = _element->getDocument()->view()->part()->settings();
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bUnfinishedImageFrame = settings->unfinishedImageFrame();
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setIntrinsicWidth( 0 );
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setIntrinsicHeight( 0 );
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}
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RenderImage::~RenderImage()
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{
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if(m_cachedImage) m_cachedImage->deref( this );
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if(m_oldImage) m_oldImage->deref( this );
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}
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TQPixmap RenderImage::pixmap() const
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{
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return m_cachedImage ? m_cachedImage->pixmap() : TQPixmap();
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}
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void RenderImage::setStyle(RenderStyle* _style)
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{
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RenderReplaced::setStyle(_style);
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// init RenderObject attributes
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//setOverhangingContents(style()->height().isPercent());
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setShouldPaintBackgroundOrBorder(true);
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}
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void RenderImage::setContentObject(CachedObject* co )
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{
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if (co && m_cachedImage != co)
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updateImage( static_cast<CachedImage*>( co ) );
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}
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void RenderImage::setPixmap( const TQPixmap &p, const TQRect& r, CachedImage *o)
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{
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if ( o == m_oldImage )
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return;
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if(o != m_cachedImage) {
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RenderReplaced::setPixmap(p, r, o);
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return;
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}
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bool iwchanged = false;
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if(o->isErrorImage()) {
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int iw = p.width() + 8;
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int ih = p.height() + 8;
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// we have an alt and the user meant it (its not a text we invented)
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if ( element() && !alt.isEmpty() && !element()->getAttribute( ATTR_ALT ).isNull()) {
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const TQFontMetrics &fm = style()->fontMetrics();
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TQRect br = fm.boundingRect ( 0, 0, 1024, 256, TQt::AlignAuto|TQt::WordBreak, alt.string() );
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if ( br.width() > iw )
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iw = br.width();
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if ( br.height() > ih )
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ih = br.height();
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}
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if ( iw != intrinsicWidth() ) {
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setIntrinsicWidth( iw );
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iwchanged = true;
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}
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if ( ih != intrinsicHeight() ) {
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setIntrinsicHeight( ih );
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iwchanged = true;
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}
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if ( element() && element()->id() == ID_OBJECT ) {
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static_cast<HTMLObjectElementImpl*>( element() )->renderAlternative();
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return;
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}
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}
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berrorPic = o->isErrorImage();
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bool needlayout = false;
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// Image dimensions have been changed, see what needs to be done
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if( o->pixmap_size().width() != intrinsicWidth() ||
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o->pixmap_size().height() != intrinsicHeight() || iwchanged )
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{
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// qDebug("image dimensions have been changed, old: %d/%d new: %d/%d",
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// intrinsicWidth(), intrinsicHeight(),
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// o->pixmap_size().width(), o->pixmap_size().height());
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if(!o->isErrorImage()) {
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setIntrinsicWidth( o->pixmap_size().width() );
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setIntrinsicHeight( o->pixmap_size().height() );
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}
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// lets see if we need to relayout at all..
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int oldwidth = m_width;
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int oldheight = m_height;
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int oldminwidth = m_minWidth;
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m_minWidth = 0;
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if ( parent() ) {
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calcWidth();
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calcHeight();
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}
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if(iwchanged || m_width != oldwidth || m_height != oldheight)
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needlayout = true;
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m_minWidth = oldminwidth;
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m_width = oldwidth;
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m_height = oldheight;
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}
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// we're not fully integrated in the tree yet.. we'll come back.
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if ( !parent() )
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return;
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if(needlayout)
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{
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if (!selfNeedsLayout())
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setNeedsLayout(true);
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if (minMaxKnown())
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setMinMaxKnown(false);
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}
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else
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{
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bool completeRepaint = !resizeCache.isNull();
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int cHeight = contentHeight();
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int scaledHeight = intrinsicHeight() ? ((o->valid_rect().height()*cHeight)/intrinsicHeight()) : 0;
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// don't bog down X server doing xforms
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if(completeRepaint && cHeight >= 5 && o->valid_rect().height() < intrinsicHeight() &&
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(scaledHeight / (cHeight/5) == resizeCache.height() / (cHeight/5)))
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return;
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resizeCache = TQPixmap(); // for resized animations
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if(completeRepaint)
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repaintRectangle(borderLeft()+paddingLeft(), borderTop()+paddingTop(), contentWidth(), contentHeight());
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else
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{
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repaintRectangle(r.x() + borderLeft() + paddingLeft(), r.y() + borderTop() + paddingTop(),
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r.width(), r.height());
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}
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}
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}
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void RenderImage::paint(PaintInfo& paintInfo, int _tx, int _ty)
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{
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if (paintInfo.phase == PaintActionOutline && style()->outlineWidth() && style()->visibility() == VISIBLE)
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paintOutline(paintInfo.p, _tx + m_x, _ty + m_y, width(), height(), style());
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if (paintInfo.phase != PaintActionForeground && paintInfo.phase != PaintActionSelection)
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return;
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// not visible or not even once layouted?
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if (style()->visibility() != VISIBLE || m_y <= -500000) return;
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_tx += m_x;
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_ty += m_y;
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if((_ty > paintInfo.r.bottom()) || (_ty + m_height <= paintInfo.r.top())) return;
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if(shouldPaintBackgroundOrBorder())
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paintBoxDecorations(paintInfo, _tx, _ty);
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int cWidth = contentWidth();
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int cHeight = contentHeight();
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int leftBorder = borderLeft();
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int topBorder = borderTop();
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int leftPad = paddingLeft();
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int topPad = paddingTop();
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if (!canvas()->printImages())
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return;
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CachedImage* i = m_oldImage && m_oldImage->valid_rect().size() == m_oldImage->pixmap_size() &&
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m_oldImage->pixmap_size().width() == intrinsicWidth() &&
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m_oldImage->pixmap_size().height() == intrinsicHeight()
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? m_oldImage : m_cachedImage;
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// paint frame around image as long as it is not completely loaded from web.
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if (bUnfinishedImageFrame && paintInfo.phase == PaintActionForeground && cWidth > 2 && cHeight > 2 && !complete()) {
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static TQPixmap *loadingIcon;
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TQColor bg = khtml::retrieveBackgroundColor(this);
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TQColor fg = khtml::hasSufficientContrast(Qt::gray, bg) ? Qt::gray :
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(hasSufficientContrast(Qt::white, bg) ? Qt::white : Qt::black);
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paintInfo.p->setPen(TQPen(fg, 1));
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paintInfo.p->setBrush( Qt::NoBrush );
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paintInfo.p->drawRect(_tx, _ty, m_width, m_height);
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if (!(m_width <= 5 || m_height <= 5)) {
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if (!loadingIcon) {
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loadingIcon = new TQPixmap();
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loadingIcon->loadFromData(loading_icon_data, loading_icon_len);
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}
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paintInfo.p->drawPixmap(_tx + 4, _ty + 4, *loadingIcon, 0, 0, m_width - 5, m_height - 5);
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}
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}
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//kdDebug( 6040 ) << " contents (" << contentWidth << "/" << contentHeight << ") border=" << borderLeft() << " padding=" << paddingLeft() << endl;
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if ( !i || berrorPic)
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{
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if(cWidth > 2 && cHeight > 2)
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{
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if ( !berrorPic ) {
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//qDebug("qDrawShadePanel %d/%d/%d/%d", _tx + leftBorder, _ty + topBorder, cWidth, cHeight);
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qDrawShadePanel( paintInfo.p, _tx + leftBorder + leftPad, _ty + topBorder + topPad, cWidth, cHeight,
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KApplication::palette().inactive(), true, 1 );
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}
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TQPixmap const* pix = i ? &i->pixmap() : 0;
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if(berrorPic && pix && (cWidth >= pix->width()+4) && (cHeight >= pix->height()+4) )
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{
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TQRect r(pix->rect());
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r = r.intersect(TQRect(0, 0, cWidth-4, cHeight-4));
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paintInfo.p->drawPixmap( TQPoint( _tx + leftBorder + leftPad+2, _ty + topBorder + topPad+2), *pix, r );
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}
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if(!alt.isEmpty()) {
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TQString text = alt.string();
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paintInfo.p->setFont(style()->font());
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paintInfo.p->setPen( style()->color() );
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int ax = _tx + leftBorder + leftPad + 2;
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int ay = _ty + topBorder + topPad + 2;
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const TQFontMetrics &fm = style()->fontMetrics();
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if (cWidth>5 && cHeight>=fm.height())
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paintInfo.p->drawText(ax, ay+1, cWidth - 4, cHeight - 4, TQt::WordBreak, text );
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}
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}
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}
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else if (i && !i->isTransparent())
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{
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paintInfo.p->setPen( Qt::black ); // used for bitmaps
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const TQPixmap& pix = i->pixmap();
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if ( (cWidth != intrinsicWidth() || cHeight != intrinsicHeight()) &&
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pix.width() > 0 && pix.height() > 0 && i->valid_rect().isValid())
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{
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if (resizeCache.isNull() && cWidth && cHeight && intrinsicWidth() && intrinsicHeight())
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{
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TQRect scaledrect(i->valid_rect());
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// kdDebug(6040) << "time elapsed: " << dt->elapsed() << endl;
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// kdDebug( 6040 ) << "have to scale: " << endl;
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// qDebug("cw=%d ch=%d pw=%d ph=%d rcw=%d, rch=%d",
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// cWidth, cHeight, intrinsicWidth(), intrinsicHeight(), resizeCache.width(), resizeCache.height());
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TQWMatrix matrix;
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matrix.scale( (float)(cWidth)/intrinsicWidth(),
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(float)(cHeight)/intrinsicHeight() );
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resizeCache = pix.xForm( matrix );
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scaledrect.setWidth( ( cWidth*scaledrect.width() ) / intrinsicWidth() );
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scaledrect.setHeight( ( cHeight*scaledrect.height() ) / intrinsicHeight() );
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// qDebug("resizeCache size: %d/%d", resizeCache.width(), resizeCache.height());
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// qDebug("valid: %d/%d, scaled: %d/%d",
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// i->valid_rect().width(), i->valid_rect().height(),
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// scaledrect.width(), scaledrect.height());
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// sometimes scaledrect.width/height are off by one because
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// of rounding errors. if the i is fully loaded, we
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// make sure that we don't do unnecessary resizes during painting
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TQSize s(scaledrect.size());
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if(i->valid_rect().size() == TQSize( intrinsicWidth(), intrinsicHeight() )) // fully loaded
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s = TQSize(cWidth, cHeight);
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if(kAbs(s.width() - cWidth) < 2) // rounding errors
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s.setWidth(cWidth);
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if(resizeCache.size() != s)
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resizeCache.resize(s);
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paintInfo.p->drawPixmap( TQPoint( _tx + leftBorder + leftPad, _ty + topBorder + topPad),
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resizeCache, scaledrect );
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}
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else
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paintInfo.p->drawPixmap( TQPoint( _tx + leftBorder + leftPad, _ty + topBorder + topPad), resizeCache );
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}
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else
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{
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// we might be just about switching images
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TQRect rect(i->valid_rect().isValid() ? i->valid_rect()
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: TQRect(0, 0, intrinsicWidth(), intrinsicHeight()));
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TQPoint offs( _tx + leftBorder + leftPad, _ty + topBorder + topPad);
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// qDebug("normal paint rect %d/%d/%d/%d", rect.x(), rect.y(), rect.width(), rect.height());
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// rect = rect & TQRect( 0 , y - offs.y() - 10, w, 10 + y + h - offs.y());
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// qDebug("normal paint rect after %d/%d/%d/%d", rect.x(), rect.y(), rect.width(), rect.height());
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// qDebug("normal paint: offs.y(): %d, y: %d, diff: %d", offs.y(), y, y - offs.y());
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// qDebug("");
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// p->setClipRect(TQRect(x,y,w,h));
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// p->drawPixmap( offs.x(), y, pix, rect.x(), rect.y(), rect.width(), rect.height() );
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paintInfo.p->drawPixmap(offs, pix, rect);
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}
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}
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if (m_selectionState != SelectionNone) {
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// kdDebug(6040) << "_tx " << _tx << " _ty " << _ty << " _x " << _x << " _y " << _y << endl;
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// Draw in any case if inside selection. For selection borders, the
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// offset will decide whether to draw selection or not
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bool draw = true;
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if (m_selectionState != SelectionInside) {
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int startPos, endPos;
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selectionStartEnd(startPos, endPos);
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if(selectionState() == SelectionStart)
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endPos = 1;
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else if(selectionState() == SelectionEnd)
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startPos = 0;
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draw = endPos - startPos > 0;
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}
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if (draw) {
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// setting the brush origin is important for compatibility,
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// don't touch it unless you know what you're doing
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paintInfo.p->setBrushOrigin(_tx, _ty - paintInfo.r.y());
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paintInfo.p->fillRect(_tx, _ty, width(), height(),
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TQBrush(style()->palette().active().highlight(),
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Qt::Dense4Pattern));
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}
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}
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}
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void RenderImage::layout()
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{
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KHTMLAssert( needsLayout());
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KHTMLAssert( minMaxKnown() );
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short oldwidth = m_width;
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int oldheight = m_height;
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// minimum height
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m_height = m_cachedImage && m_cachedImage->isErrorImage() ? intrinsicHeight() : 0;
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calcWidth();
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calcHeight();
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// if they are variable width and we calculate a huge height or width, we assume they
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// actually wanted the intrinsic width.
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if ( m_width > 4096 && !style()->width().isFixed() )
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m_width = intrinsicWidth() + paddingLeft() + paddingRight() + borderLeft() + borderRight();
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if ( m_height > 2048 && !style()->height().isFixed() )
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m_height = intrinsicHeight() + paddingTop() + paddingBottom() + borderTop() + borderBottom();
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// limit total size to not run out of memory when doing the xform call.
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if ( ( m_width * m_height > 4096*2048 ) &&
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( contentWidth() > intrinsicWidth() || contentHeight() > intrinsicHeight() ) ) {
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float scale = sqrt( m_width*m_height / ( 4096.*2048. ) );
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m_width = (int) (m_width/scale);
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m_height = (int) (m_height/scale);
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}
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if ( m_width != oldwidth || m_height != oldheight )
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resizeCache = TQPixmap();
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setNeedsLayout(false);
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}
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void RenderImage::notifyFinished(CachedObject *finishedObj)
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{
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if ( ( m_cachedImage == finishedObj || m_oldImage == finishedObj ) && m_oldImage ) {
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m_oldImage->deref( this );
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m_oldImage = 0;
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repaint();
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}
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RenderReplaced::notifyFinished(finishedObj);
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}
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bool RenderImage::nodeAtPoint(NodeInfo& info, int _x, int _y, int _tx, int _ty, HitTestAction hitTestAction, bool inside)
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{
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inside |= RenderReplaced::nodeAtPoint(info, _x, _y, _tx, _ty, hitTestAction, inside);
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if (inside && element()) {
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int tx = _tx + m_x;
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int ty = _ty + m_y;
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if (isRelPositioned())
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relativePositionOffset(tx, ty);
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HTMLImageElementImpl* i = element()->id() == ID_IMG ? static_cast<HTMLImageElementImpl*>(element()) : 0;
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HTMLMapElementImpl* map;
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if (i && i->getDocument()->isHTMLDocument() &&
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(map = static_cast<HTMLDocumentImpl*>(i->getDocument())->getMap(i->imageMap()))) {
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// we're a client side image map
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inside = map->mapMouseEvent(_x - tx, _y - ty, contentWidth(), contentHeight(), info);
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info.setInnerNonSharedNode(element());
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}
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}
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return inside;
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}
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void RenderImage::updateImage(CachedImage* new_image)
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{
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CachedImage* tempimage = m_oldImage;
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m_oldImage = m_cachedImage;
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m_cachedImage = new_image;
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assert( m_cachedImage != m_oldImage );
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if ( m_cachedImage )
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m_cachedImage->ref(this);
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if ( tempimage )
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tempimage->deref(this);
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// if the loading finishes we might get an error and then the image is deleted
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if ( m_cachedImage )
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berrorPic = m_cachedImage->isErrorImage();
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else
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berrorPic = true;
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}
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void RenderImage::updateFromElement()
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{
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if (element()->id() == ID_INPUT)
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alt = static_cast<HTMLInputElementImpl*>(element())->altText();
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else if (element()->id() == ID_IMG)
|
|
alt = static_cast<HTMLImageElementImpl*>(element())->altText();
|
|
|
|
DOMString u = element()->id() == ID_OBJECT ?
|
|
element()->getAttribute(ATTR_DATA) : element()->getAttribute(ATTR_SRC);
|
|
|
|
if (!u.isEmpty() &&
|
|
( !m_cachedImage || m_cachedImage->url() != u ) ) {
|
|
CachedImage *new_image = element()->getDocument()->docLoader()->
|
|
requestImage(khtml::parseURL(u));
|
|
|
|
if(new_image && new_image != m_cachedImage)
|
|
updateImage( new_image );
|
|
}
|
|
}
|
|
|
|
bool RenderImage::complete() const
|
|
{
|
|
// "complete" means that the image has been loaded
|
|
// but also that its width/height (contentWidth(),contentHeight()) have been calculated.
|
|
return m_cachedImage && m_cachedImage->valid_rect().size() == m_cachedImage->pixmap_size() && !needsLayout();
|
|
}
|
|
|
|
bool RenderImage::isWidthSpecified() const
|
|
{
|
|
switch (style()->width().type()) {
|
|
case Fixed:
|
|
case Percent:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
assert(false);
|
|
return false;
|
|
}
|
|
|
|
bool RenderImage::isHeightSpecified() const
|
|
{
|
|
switch (style()->height().type()) {
|
|
case Fixed:
|
|
case Percent:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
assert(false);
|
|
return false;
|
|
}
|
|
|
|
short RenderImage::calcAspectRatioWidth() const
|
|
{
|
|
if (intrinsicHeight() == 0)
|
|
return 0;
|
|
if (!m_cachedImage || m_cachedImage->isErrorImage())
|
|
return intrinsicWidth(); // Don't bother scaling.
|
|
return RenderReplaced::calcReplacedHeight() * intrinsicWidth() / intrinsicHeight();
|
|
}
|
|
|
|
int RenderImage::calcAspectRatioHeight() const
|
|
{
|
|
if (intrinsicWidth() == 0)
|
|
return 0;
|
|
if (!m_cachedImage || m_cachedImage->isErrorImage())
|
|
return intrinsicHeight(); // Don't bother scaling.
|
|
return RenderReplaced::calcReplacedWidth() * intrinsicHeight() / intrinsicWidth();
|
|
}
|
|
|
|
short RenderImage::calcReplacedWidth() const
|
|
{
|
|
int width;
|
|
if (isWidthSpecified())
|
|
width = calcReplacedWidthUsing(Width);
|
|
else
|
|
width = calcAspectRatioWidth();
|
|
int minW = calcReplacedWidthUsing(MinWidth);
|
|
int maxW = style()->maxWidth().value() == UNDEFINED ? width : calcReplacedWidthUsing(MaxWidth);
|
|
|
|
if (width > maxW)
|
|
width = maxW;
|
|
|
|
if (width < minW)
|
|
width = minW;
|
|
|
|
return width;
|
|
}
|
|
|
|
int RenderImage::calcReplacedHeight() const
|
|
{
|
|
int height;
|
|
if (isHeightSpecified())
|
|
height = calcReplacedHeightUsing(Height);
|
|
else
|
|
height = calcAspectRatioHeight();
|
|
|
|
int minH = calcReplacedHeightUsing(MinHeight);
|
|
int maxH = style()->maxHeight().value() == UNDEFINED ? height : calcReplacedHeightUsing(MaxHeight);
|
|
|
|
if (height > maxH)
|
|
height = maxH;
|
|
|
|
if (height < minH)
|
|
height = minH;
|
|
|
|
return height;
|
|
}
|
|
|
|
#if 0
|
|
void RenderImage::caretPos(int offset, int flags, int &_x, int &_y, int &width, int &height)
|
|
{
|
|
RenderReplaced::caretPos(offset, flags, _x, _y, width, height);
|
|
|
|
#if 0 // doesn't work reliably
|
|
height = intrinsicHeight();
|
|
width = override && offset == 0 ? intrinsicWidth() : 0;
|
|
_x = xPos();
|
|
_y = yPos();
|
|
if (offset > 0) _x += intrinsicWidth();
|
|
|
|
RenderObject *cb = containingBlock();
|
|
|
|
int absx, absy;
|
|
if (cb && cb != this && cb->absolutePosition(absx,absy))
|
|
{
|
|
_x += absx;
|
|
_y += absy;
|
|
} else {
|
|
// we don't know our absolute position, and there is no point returning
|
|
// just a relative one
|
|
_x = _y = -1;
|
|
}
|
|
#endif
|
|
}
|
|
#endif
|