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      1 /**
      2  * Copyright (C) 2003, 2006 Apple Computer, Inc.
      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 #include "config.h"
     21 #include "EllipsisBox.h"
     22 
     23 #include "Document.h"
     24 #include "GraphicsContext.h"
     25 #include "HitTestResult.h"
     26 #include "RootInlineBox.h"
     27 
     28 namespace WebCore {
     29 
     30 void EllipsisBox::paint(RenderObject::PaintInfo& paintInfo, int tx, int ty)
     31 {
     32     GraphicsContext* context = paintInfo.context;
     33     RenderStyle* style = m_renderer->style(m_firstLine);
     34     Color textColor = style->color();
     35     if (textColor != context->fillColor())
     36         context->setFillColor(textColor, style->colorSpace());
     37     bool setShadow = false;
     38     if (style->textShadow()) {
     39         context->setShadow(IntSize(style->textShadow()->x, style->textShadow()->y),
     40                            style->textShadow()->blur, style->textShadow()->color, style->colorSpace());
     41         setShadow = true;
     42     }
     43 
     44     if (selectionState() != RenderObject::SelectionNone) {
     45         paintSelection(context, tx, ty, style, style->font());
     46 
     47         // Select the correct color for painting the text.
     48         Color foreground = paintInfo.forceBlackText ? Color::black : renderer()->selectionForegroundColor();
     49         if (foreground.isValid() && foreground != textColor)
     50             context->setFillColor(foreground, style->colorSpace());
     51     }
     52 
     53     const String& str = m_str;
     54     context->drawText(style->font(), TextRun(str.characters(), str.length(), false, 0, 0, false, style->visuallyOrdered()), IntPoint(m_x + tx, m_y + ty + style->font().ascent()));
     55 
     56     // Restore the regular fill color.
     57     if (textColor != context->fillColor())
     58         context->setFillColor(textColor, style->colorSpace());
     59 
     60     if (setShadow)
     61         context->clearShadow();
     62 
     63     if (m_markupBox) {
     64         // Paint the markup box
     65         tx += m_x + m_width - m_markupBox->x();
     66         ty += m_y + style->font().ascent() - (m_markupBox->y() + m_markupBox->renderer()->style(m_firstLine)->font().ascent());
     67         m_markupBox->paint(paintInfo, tx, ty);
     68     }
     69 }
     70 
     71 IntRect EllipsisBox::selectionRect(int tx, int ty)
     72 {
     73     RenderStyle* style = m_renderer->style(m_firstLine);
     74     const Font& f = style->font();
     75     return enclosingIntRect(f.selectionRectForText(TextRun(m_str.characters(), m_str.length(), false, 0, 0, false, style->visuallyOrdered()),
     76             IntPoint(m_x + tx, m_y + ty + root()->selectionTop()), root()->selectionHeight()));
     77 }
     78 
     79 void EllipsisBox::paintSelection(GraphicsContext* context, int tx, int ty, RenderStyle* style, const Font& font)
     80 {
     81     Color textColor = style->color();
     82     Color c = m_renderer->selectionBackgroundColor();
     83     if (!c.isValid() || !c.alpha())
     84         return;
     85 
     86     // If the text color ends up being the same as the selection background, invert the selection
     87     // background.
     88     if (textColor == c)
     89         c = Color(0xff - c.red(), 0xff - c.green(), 0xff - c.blue());
     90 
     91     context->save();
     92     int y = root()->selectionTop();
     93     int h = root()->selectionHeight();
     94     context->clip(IntRect(m_x + tx, y + ty, m_width, h));
     95     context->drawHighlightForText(font, TextRun(m_str.characters(), m_str.length(), false, 0, 0, false, style->visuallyOrdered()),
     96         IntPoint(m_x + tx, m_y + ty + y), h, c, style->colorSpace());
     97     context->restore();
     98 }
     99 
    100 bool EllipsisBox::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, int x, int y, int tx, int ty)
    101 {
    102     tx += m_x;
    103     ty += m_y;
    104 
    105     // Hit test the markup box.
    106     if (m_markupBox) {
    107         RenderStyle* style = m_renderer->style(m_firstLine);
    108         int mtx = tx + m_width - m_markupBox->x();
    109         int mty = ty + style->font().ascent() - (m_markupBox->y() + m_markupBox->renderer()->style(m_firstLine)->font().ascent());
    110         if (m_markupBox->nodeAtPoint(request, result, x, y, mtx, mty)) {
    111             renderer()->updateHitTestResult(result, IntPoint(x - mtx, y - mty));
    112             return true;
    113         }
    114     }
    115 
    116     if (visibleToHitTesting() && IntRect(tx, ty, m_width, m_height).contains(x, y)) {
    117         renderer()->updateHitTestResult(result, IntPoint(x - tx, y - ty));
    118         return true;
    119     }
    120 
    121     return false;
    122 }
    123 
    124 } // namespace WebCore
    125