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119 lines
3.6 KiB
119 lines
3.6 KiB
// -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; c-brace-offset: 0; -*- |
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// |
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// Class: DVIWidget |
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// |
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// Widget for displaying TeX DVI files. |
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// Part of KDVI- A previewer for TeX DVI files. |
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// |
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// (C) 2004-2005 Wilfried Huss, Stefan Kebekus |
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// Distributed under the GPL |
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// |
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#include <config.h> |
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#include "dviWidget.h" |
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#include "documentPageCache.h" |
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#include "hyperlink.h" |
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#include "kvs_debug.h" |
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#include "renderedDviPagePixmap.h" |
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#include <klocale.h> |
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#include <QMouseEvent> |
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DVIWidget::DVIWidget(PageView* sv, DocumentPageCache* cache, const char* name) |
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: DocumentWidget(sv, cache) |
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{ |
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} |
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void DVIWidget::mousePressEvent(QMouseEvent* e) |
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{ |
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// Call implementation from parent |
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DocumentWidget::mousePressEvent(e); |
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// Safety check |
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if (!pageNumber.isValid()) { |
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return; |
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} |
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// Get a pointer to the page contents |
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RenderedDviPagePixmap* pageData = dynamic_cast<RenderedDviPagePixmap*>(documentCache->getPage(pageNumber)); |
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if (pageData == 0) { |
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kDebug(kvs::dvi) << "DVIWidget::mousePressEvent(...) pageData for page #" << pageNumber << " is empty" << endl; |
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return; |
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} |
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// Check if the mouse is pressed on a source-hyperlink |
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// source hyperlinks can be invoked with the Middle Mousebutton or alternatively |
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// with Control+Left Mousebutton |
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if ((e->button() == Qt::MidButton || (e->button() == Qt::LeftButton && (e->state() & Qt::ControlButton))) |
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&& (pageData->sourceHyperLinkList.size() > 0)) { |
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int minIndex = 0; |
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int minimum = 0; |
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for(int i=0; i<pageData->sourceHyperLinkList.size(); i++) { |
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if (pageData->sourceHyperLinkList[i].box.contains(inverseMap(e->pos()))) { |
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emit(SRCLink(pageData->sourceHyperLinkList[i].linkText, inverseMap(e->pos()), this)); |
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e->accept(); |
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return; |
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} |
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// Remember the closest source link |
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QPoint center = pageData->sourceHyperLinkList[i].box.center(); |
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int dx = center.x() - e->pos().x(); |
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int dy = center.y() - e->pos().y(); |
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if (dx*dx + dy*dy < minimum || i == 0) { |
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minIndex = i; |
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minimum = dx*dx + dy*dy; |
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} |
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} |
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// If the mouse pointer is not exactly inside a source link, jump to the closest target. |
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emit(SRCLink(pageData->sourceHyperLinkList[minIndex].linkText, inverseMap(e->pos()), this)); |
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e->accept(); |
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} |
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} |
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void DVIWidget::mouseMoveEvent(QMouseEvent* e) |
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{ |
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// Safety check |
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if (!pageNumber.isValid()) |
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return; |
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// Call the standard implementation |
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DocumentWidget::mouseMoveEvent(e); |
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// Analyze the mouse movement only if no mouse button was pressed |
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if ( e->state() == 0 ) { |
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// Get a pointer to the page contents |
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RenderedDviPagePixmap* pageData = dynamic_cast<RenderedDviPagePixmap*>(documentCache->getPage(pageNumber)); |
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if (pageData == 0) { |
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kDebug(kvs::dvi) << "DVIWidget::mouseMoveEvent(...) pageData for page #" << pageNumber << " is empty" << endl; |
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return; |
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} |
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// Check if the cursor hovers over a sourceHyperlink. |
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for(int i=0; i<pageData->sourceHyperLinkList.size(); i++) { |
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if (pageData->sourceHyperLinkList[i].box.contains(e->pos())) { |
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clearStatusBarTimer.stop(); |
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// The macro-package srcltx gives a special like "src:99 test.tex" |
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// while MikTeX gives "src:99test.tex". KDVI tries |
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// to understand both. |
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QString cp = pageData->sourceHyperLinkList[i].linkText; |
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int max = cp.length(); |
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int i; |
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for(i=0; i<max; i++) |
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if (cp[i].isDigit() == false) |
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break; |
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emit setStatusBarText( i18n("line %1 of %2", cp.left(i), cp.mid(i).simplified()) ); |
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return; |
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} |
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} |
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} |
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} |
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#include "dviWidget.moc"
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