1 files changed, 123 insertions, 0 deletions
diff --git a/kdvi/dviWidget.cpp b/kdvi/dviWidget.cpp
new file mode 100644
index 00000000..8475af92
--- /dev/null
+++ b/kdvi/dviWidget.cpp
@@ -0,0 +1,123 @@
+//
+// Class: DVIWidget
+//
+// Widget for displaying TeX DVI files.
+// Part of KDVI- A previewer for TeX DVI files.
+//
+// (C) 2004 Wilfried Huss, Stefan Kebekus
+// Distributed under the GPL
+//
+
+#include <config.h>
+
+#include <kdebug.h>
+#include <klocale.h>
+
+#include "dviWidget.h"
+
+#include "documentPageCache.h"
+#include "documentWidget.h"
+#include "hyperlink.h"
+#include "pageView.h"
+#include "renderedDviPagePixmap.h"
+#include "selection.h"
+
+DVIWidget::DVIWidget(QWidget* parent, PageView* sv, DocumentPageCache* cache, const char* name)
+  : DocumentWidget(parent, sv, cache, name)
+{
+}
+
+
+void DVIWidget::mousePressEvent(QMouseEvent* e)
+{
+  // pageNr == 0 indicated an invalid page (e.g. page number not yet set)
+  if (pageNr == 0)
+    return;
+
+  // Get a pointer to the page contents
+  RenderedDviPagePixmap* pageData = dynamic_cast<RenderedDviPagePixmap*>(documentCache->getPage(pageNr));
+  if (pageData == 0)
+  {
+    kdDebug(4300) << "DVIWidget::mousePressEvent(...) pageData for page #" << pageNr << " is empty" << endl;
+    return;
+  }
+
+  // Check if the mouse is pressed on a source-hyperlink
+  // source hyperlinks can be invoked with the Middle Mousebutton or alternatively
+  // with Control+Left Mousebutton
+  if ((e->button() == MidButton || (e->button() == LeftButton && (e->state() & ControlButton)))
+      && (pageData->sourceHyperLinkList.size() > 0))
+  {
+    int minIndex = 0;
+    int minimum = 0;
+
+    for(unsigned int i=0; i<pageData->sourceHyperLinkList.size(); i++)
+    {
+      if (pageData->sourceHyperLinkList[i].box.contains(e->pos()))
+      {
+        emit(SRCLink(pageData->sourceHyperLinkList[i].linkText, e, this));
+        e->accept();
+        return;
+      }
+      // Remember the closest source link
+      QPoint center = pageData->sourceHyperLinkList[i].box.center();
+      int dx = center.x() - e->pos().x();
+      int dy = center.y() - e->pos().y();
+      if (dx*dx + dy*dy < minimum || i == 0)
+      {
+        minIndex = i;
+        minimum = dx*dx + dy*dy;
+      }
+    }
+    // If the mouse pointer is not exactly inside a source link, jump to the closest target.
+    emit(SRCLink(pageData->sourceHyperLinkList[minIndex].linkText, e, this));
+    e->accept();
+  }
+
+  // Call implementation from parent
+  DocumentWidget::mousePressEvent(e);
+}
+
+
+void DVIWidget::mouseMoveEvent(QMouseEvent* e)
+{
+  // pageNr == 0 indicated an invalid page (e.g. page number not yet set)
+  if (pageNr == 0)
+    return;
+
+  // Call the standard implementation
+  DocumentWidget::mouseMoveEvent(e);
+  
+  // Analyze the mouse movement only if no mouse button was pressed
+  if ( e->state() == 0 ) {
+    // Get a pointer to the page contents
+    RenderedDviPagePixmap* pageData = dynamic_cast<RenderedDviPagePixmap*>(documentCache->getPage(pageNr));
+    if (pageData == 0) {
+      kdDebug(4300) << "DVIWidget::mouseMoveEvent(...) pageData for page #" << pageNr << " is empty" << endl;
+      return;
+    }
+    
+    // Check if the cursor hovers over a sourceHyperlink.
+    for(unsigned int i=0; i<pageData->sourceHyperLinkList.size(); i++) {
+      if (pageData->sourceHyperLinkList[i].box.contains(e->pos())) {
+	clearStatusBarTimer.stop();
+	
+	// The macro-package srcltx gives a special like "src:99 test.tex"
+	// while MikTeX gives "src:99test.tex". KDVI tries
+	// to understand both.
+	QString cp = pageData->sourceHyperLinkList[i].linkText;
+	int max = cp.length();
+	int i;
+	for(i=0; i<max; i++)
+	  if (cp[i].isDigit() == false)
+	    break;
+	
+	emit setStatusBarText( i18n("line %1 of %2").arg(cp.left(i)).arg(cp.mid(i).simplifyWhiteSpace()) );
+	return;
+      }
+    }
+  }
+}
+
+
+#include "dviWidget.moc"