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@@ -26,14 +26,132 @@
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// CTK includes
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#include "ctkFittedTextBrowser.h"
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+#include "ctkFittedTextBrowser_p.h"
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+
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+static const char moreAnchor[] = "more";
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+static const char lessAnchor[] = "less";
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+
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+//-----------------------------------------------------------------------------
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+ctkFittedTextBrowserPrivate::ctkFittedTextBrowserPrivate(ctkFittedTextBrowser& object)
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+ :q_ptr(&object)
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+{
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+ this->Collapsible = false;
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+ this->Collapsed = true;
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+ this->FullTextSetter = ctkFittedTextBrowserPrivate::Text;
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+ this->ShowMoreText = object.tr("More...");
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+ this->ShowLessText = object.tr("Hide details.");
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+ QString ShowLessText;
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+}
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+
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+//-----------------------------------------------------------------------------
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+ctkFittedTextBrowserPrivate::~ctkFittedTextBrowserPrivate()
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+{
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+}
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+
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+//-----------------------------------------------------------------------------
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+QString ctkFittedTextBrowserPrivate::collapsibleText()
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+{
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+ Q_Q(ctkFittedTextBrowser);
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+ bool html = (this->FullTextSetter == ctkFittedTextBrowserPrivate::Html || this->FullText.indexOf("<html>") >= 0);
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+ if (html)
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+ {
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+ return this->collapsibleHtml();
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+ }
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+ else
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+ {
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+ return this->collapsiblePlainText();
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+ }
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+}
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+
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+//-----------------------------------------------------------------------------
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+QString ctkFittedTextBrowserPrivate::collapseLinkText()
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+{
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+ Q_Q(ctkFittedTextBrowser);
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+ if (this->Collapsed)
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+ {
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+ return QString(" <a href=\"#") + moreAnchor + "\">" + this->ShowMoreText + "</a>";
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+ }
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+ else
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+ {
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+ return QString(" <a href=\"#") + lessAnchor + "\">" + this->ShowLessText + "</a>";
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+ }
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+}
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+
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+//-----------------------------------------------------------------------------
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+QString ctkFittedTextBrowserPrivate::collapsiblePlainText()
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+{
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+ Q_Q(ctkFittedTextBrowser);
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+ int teaserEndPosition = this->FullText.indexOf("\n");
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+ if (teaserEndPosition < 0)
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+ {
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+ return this->FullText;
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+ }
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+ QString finalText;
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+ finalText.append("<html>");
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+ finalText.append(this->Collapsed ? this->FullText.left(teaserEndPosition) : this->FullText);
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+ finalText.append(this->collapseLinkText());
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+ finalText.append("</html>");
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+ // Remove line break to allow continuation of line.
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+ finalText.replace(finalText.indexOf('\n'), 1, ' ');
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+ // In plain text line breaks were indicated by newline, but we now use html,
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+ // so line breaks must use <br>
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+ finalText.replace("\n", "<br>");
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+ return finalText;
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+}
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+
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+//-----------------------------------------------------------------------------
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+QString ctkFittedTextBrowserPrivate::collapsibleHtml()
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+{
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+ Q_Q(ctkFittedTextBrowser);
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+ const QString lineBreak("<br>");
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+ int teaserEndPosition = this->FullText.indexOf(lineBreak);
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+ if (teaserEndPosition < 0)
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+ {
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+ return this->FullText;
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+ }
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+
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+ QString finalText = this->FullText;
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+ if (this->Collapsed)
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+ {
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+ finalText = finalText.left(teaserEndPosition) + this->collapseLinkText();
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+ // By truncating the full text we might have deleted the closing </html> tag
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+ // restore it now.
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+ if (finalText.contains("<html") && !finalText.contains("</html"))
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+ {
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+ finalText.append("</html>");
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+ }
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+ }
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+ else
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+ {
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+ // Remove <br> to allow continuation of line and avoid extra space
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+ // when <p> element is used as well.
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+ finalText.replace(finalText.indexOf(lineBreak), lineBreak.size(), " ");
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+ // Add link text before closing </body> or </html> tag
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+ if (finalText.contains("</body>"))
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+ {
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+ finalText.replace("</body>", this->collapseLinkText() + "</body>");
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+ }
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+ else if (finalText.contains("</html>"))
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+ {
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+ finalText.replace("</html>", this->collapseLinkText() + "</html>");
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+ }
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+ else
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+ {
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+ finalText.append(this->collapseLinkText());
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+ }
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+ }
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+ return finalText;
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+}
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//-----------------------------------------------------------------------------
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ctkFittedTextBrowser::ctkFittedTextBrowser(QWidget* _parent)
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: QTextBrowser(_parent)
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+ , d_ptr(new ctkFittedTextBrowserPrivate(*this))
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{
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this->connect(this, SIGNAL(textChanged()), SLOT(heightForWidthMayHaveChanged()));
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QSizePolicy newSizePolicy = QSizePolicy(QSizePolicy::Ignored, QSizePolicy::Preferred);
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this->setSizePolicy(newSizePolicy);
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+ this->connect(this, SIGNAL(anchorClicked(QUrl)), SLOT(anchorClicked(QUrl)));
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}
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//-----------------------------------------------------------------------------
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@@ -53,8 +171,8 @@ int ctkFittedTextBrowser::heightForWidth(int _width) const
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{
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QTextDocument* doc = this->document();
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qreal savedWidth = doc->textWidth();
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-
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- // Fudge factor. This is the difference between the frame and the
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+
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+ // Fudge factor. This is the difference between the frame and the
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// viewport.
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int fudge = 2 * this->frameWidth();
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@@ -68,12 +186,12 @@ int ctkFittedTextBrowser::heightForWidth(int _width) const
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doc->setTextWidth(_width - fudge);
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int noScrollbarHeight =
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doc->documentLayout()->documentSize().height() + fudge;
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-
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+
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// (If noScrollbarHeight is greater than the maximum height we'll be
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// allowed, then there will be scrollbars, and the actual required
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// height will be even higher. But since in this case we've already
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// hit the maximum height, it doesn't matter that we underestimate.)
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-
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+
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// Get minimum height (even if string is empty): one line of text
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int _minimumHeight = QFontMetrics(doc->defaultFont()).lineSpacing() + fudge;
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int ret = qMax(noScrollbarHeight, _minimumHeight) + horizontalScrollbarHeight;
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@@ -108,3 +226,172 @@ void ctkFittedTextBrowser::resizeEvent(QResizeEvent* e)
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this->heightForWidthMayHaveChanged();
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}
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}
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+
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+//-----------------------------------------------------------------------------
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+void ctkFittedTextBrowser::setText(const QString &text)
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+{
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+ Q_D(ctkFittedTextBrowser);
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+ d->FullTextSetter = ctkFittedTextBrowserPrivate::Text;
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+ if (d->Collapsible)
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+ {
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+ d->FullText = text;
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+ QTextBrowser::setHtml(d->collapsibleText());
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+ }
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+ else
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+ {
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+ QTextBrowser::setText(text);
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+ }
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+}
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+
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+//-----------------------------------------------------------------------------
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+void ctkFittedTextBrowser::setPlainText(const QString &text)
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+{
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+ Q_D(ctkFittedTextBrowser);
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+ d->FullTextSetter = ctkFittedTextBrowserPrivate::PlainText;
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+ if (d->Collapsible)
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+ {
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+ d->FullText = text;
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+ QTextBrowser::setHtml(d->collapsibleText());
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+ }
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+ else
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+ {
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+ QTextBrowser::setPlainText(text);
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+ }
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+}
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+
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+//-----------------------------------------------------------------------------
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+void ctkFittedTextBrowser::setHtml(const QString &text)
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+{
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+ Q_D(ctkFittedTextBrowser);
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+ d->FullTextSetter = ctkFittedTextBrowserPrivate::Html;
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+ // always save the original text as well because use may make the widget
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+ // collapsible at any time
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+ d->FullText = text;
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+ if (d->Collapsible)
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+ {
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+ QTextBrowser::setHtml(d->collapsibleText());
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+ }
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+ else
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+ {
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+ QTextBrowser::setHtml(text);
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+ }
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+}
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+
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+//-----------------------------------------------------------------------------
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+void ctkFittedTextBrowser::anchorClicked(const QUrl &url)
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+{
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+ Q_D(ctkFittedTextBrowser);
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+ if (url.path().isEmpty())
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+ {
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+ if (url.fragment() == moreAnchor)
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+ {
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+ this->setCollapsed(false);
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+ }
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+ else if (url.fragment() == lessAnchor)
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+ {
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+ this->setCollapsed(true);
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+ }
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+ }
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+}
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+
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+//-----------------------------------------------------------------------------
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+void ctkFittedTextBrowser::setCollapsed(bool collapsed)
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+{
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+ Q_D(ctkFittedTextBrowser);
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+ if (d->Collapsed == collapsed)
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+ {
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+ // no change
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+ return;
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+ }
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+ d->Collapsed = collapsed;
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+ if (d->Collapsible)
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+ {
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+ QTextBrowser::setHtml(d->collapsibleText());
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+ }
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+}
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+
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+//-----------------------------------------------------------------------------
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+bool ctkFittedTextBrowser::collapsed() const
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+{
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+ Q_D(const ctkFittedTextBrowser);
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+ return d->Collapsed;
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+}
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+
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+//-----------------------------------------------------------------------------
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+void ctkFittedTextBrowser::setCollapsible(bool collapsible)
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+{
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+ Q_D(ctkFittedTextBrowser);
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+ if (d->Collapsible == collapsible)
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+ {
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+ // no change
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+ return;
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+ }
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+ d->Collapsible = collapsible;
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+ if (collapsible)
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+ {
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+ QTextBrowser::setHtml(d->collapsibleText());
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+ }
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+ else
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+ {
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+ switch (d->FullTextSetter)
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+ {
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+ case ctkFittedTextBrowserPrivate::Text: QTextBrowser::setText(d->FullText); break;
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+ case ctkFittedTextBrowserPrivate::PlainText: QTextBrowser::setPlainText(d->FullText); break;
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+ case ctkFittedTextBrowserPrivate::Html: QTextBrowser::setHtml(d->FullText); break;
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+ default: QTextBrowser::setText(d->FullText); break;
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+ }
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+ }
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+}
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+
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+//-----------------------------------------------------------------------------
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+bool ctkFittedTextBrowser::collapsible() const
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+{
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+ Q_D(const ctkFittedTextBrowser);
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+ return d->Collapsible;
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+}
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+
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+//-----------------------------------------------------------------------------
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+void ctkFittedTextBrowser::setShowMoreText(const QString &text)
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+{
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+ Q_D(ctkFittedTextBrowser);
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+ if (d->ShowMoreText == text)
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+ {
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+ // no change
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+ return;
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+ }
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+ d->ShowMoreText = text;
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+ if (d->Collapsible)
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+ {
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+ QTextBrowser::setHtml(d->collapsibleText());
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+ }
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+}
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+
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+//-----------------------------------------------------------------------------
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+QString ctkFittedTextBrowser::showMoreText() const
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+{
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+ Q_D(const ctkFittedTextBrowser);
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+ return d->ShowMoreText;
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+}
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+
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+//-----------------------------------------------------------------------------
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+void ctkFittedTextBrowser::setShowLessText(const QString &text)
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+{
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+ Q_D(ctkFittedTextBrowser);
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+ if (d->ShowLessText == text)
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+ {
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+ // no change
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+ return;
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+ }
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+ d->ShowLessText = text;
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+ if (d->Collapsible)
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+ {
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+ QTextBrowser::setHtml(d->collapsibleText());
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+ }
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+}
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+
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+//-----------------------------------------------------------------------------
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+QString ctkFittedTextBrowser::showLessText() const
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+{
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+ Q_D(const ctkFittedTextBrowser);
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+ return d->ShowLessText;
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+}
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Andras Lasso