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      1 /**
      2  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
      3  *           (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  *
     20  */
     21 
     22 #include "config.h"
     23 #include "core/rendering/RenderTextControlMultiLine.h"
     24 
     25 #include "core/html/HTMLTextAreaElement.h"
     26 #include "core/rendering/HitTestResult.h"
     27 
     28 namespace WebCore {
     29 
     30 RenderTextControlMultiLine::RenderTextControlMultiLine(HTMLTextAreaElement* element)
     31     : RenderTextControl(element)
     32 {
     33     ASSERT(element);
     34 }
     35 
     36 RenderTextControlMultiLine::~RenderTextControlMultiLine()
     37 {
     38     if (node() && node()->inDocument())
     39         toHTMLTextAreaElement(node())->rendererWillBeDestroyed();
     40 }
     41 
     42 bool RenderTextControlMultiLine::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction)
     43 {
     44     if (!RenderTextControl::nodeAtPoint(request, result, locationInContainer, accumulatedOffset, hitTestAction))
     45         return false;
     46 
     47     if (result.innerNode() == node() || result.innerNode() == innerTextElement())
     48         hitInnerTextElement(result, locationInContainer.point(), accumulatedOffset);
     49 
     50     return true;
     51 }
     52 
     53 float RenderTextControlMultiLine::getAvgCharWidth(AtomicString family)
     54 {
     55     // Since Lucida Grande is the default font, we want this to match the width
     56     // of Courier New, the default font for textareas in IE, Firefox and Safari Win.
     57     // 1229 is the avgCharWidth value in the OS/2 table for Courier New.
     58     if (family == "Lucida Grande")
     59         return scaleEmToUnits(1229);
     60 
     61     return RenderTextControl::getAvgCharWidth(family);
     62 }
     63 
     64 LayoutUnit RenderTextControlMultiLine::preferredContentLogicalWidth(float charWidth) const
     65 {
     66     int factor = toHTMLTextAreaElement(node())->cols();
     67     return static_cast<LayoutUnit>(ceilf(charWidth * factor)) + scrollbarThickness();
     68 }
     69 
     70 LayoutUnit RenderTextControlMultiLine::computeControlLogicalHeight(LayoutUnit lineHeight, LayoutUnit nonContentHeight) const
     71 {
     72     return lineHeight * toHTMLTextAreaElement(node())->rows() + nonContentHeight;
     73 }
     74 
     75 int RenderTextControlMultiLine::baselinePosition(FontBaseline baselineType, bool firstLine, LineDirectionMode direction, LinePositionMode linePositionMode) const
     76 {
     77     return RenderBox::baselinePosition(baselineType, firstLine, direction, linePositionMode);
     78 }
     79 
     80 PassRefPtr<RenderStyle> RenderTextControlMultiLine::createInnerTextStyle(const RenderStyle* startStyle) const
     81 {
     82     RefPtr<RenderStyle> textBlockStyle = RenderStyle::create();
     83     textBlockStyle->inheritFrom(startStyle);
     84     adjustInnerTextStyle(textBlockStyle.get());
     85     textBlockStyle->setDisplay(BLOCK);
     86     textBlockStyle->setUnique();
     87 
     88     return textBlockStyle.release();
     89 }
     90 
     91 RenderObject* RenderTextControlMultiLine::layoutSpecialExcludedChild(bool relayoutChildren, SubtreeLayoutScope& layoutScope)
     92 {
     93     RenderObject* placeholderRenderer = RenderTextControl::layoutSpecialExcludedChild(relayoutChildren, layoutScope);
     94     if (!placeholderRenderer)
     95         return 0;
     96     if (!placeholderRenderer->isBox())
     97         return placeholderRenderer;
     98     RenderBox* placeholderBox = toRenderBox(placeholderRenderer);
     99     placeholderBox->style()->setLogicalWidth(Length(contentLogicalWidth() - placeholderBox->borderAndPaddingLogicalWidth(), Fixed));
    100     placeholderBox->layoutIfNeeded();
    101     placeholderBox->setX(borderLeft() + paddingLeft());
    102     placeholderBox->setY(borderTop() + paddingTop());
    103     return placeholderRenderer;
    104 }
    105 
    106 }
    107