Better flexibility and extensibility in text editor tooltip's internals.

src/plugins/texteditor/tooltip/tips.cpp

@@ -33,7 +33,13 @@
 #include <QtCore/QRect>
 #include <QtGui/QColor>
 #include <QtGui/QPainter>
+#include <QtGui/QPen>
 #include <QtGui/QPixmap>
+#include <QtGui/QStyle>
+#include <QtGui/QFontMetrics>
+#include <QtGui/QTextDocument>
+#include <QtGui/QStylePainter>
+#include <QtGui/QStyleOptionFrame>
 
 using namespace TextEditor;
 using namespace Internal;
@@ -53,31 +59,36 @@ namespace {
     }
 }
 
-Tip::Tip(QWidget *parent) : QFrame(parent)
-{
-    setWindowFlags(Qt::ToolTip);
-    setAutoFillBackground(true);
-    ensurePolished();
-}
+QT_BEGIN_NAMESPACE
 
-Tip::~Tip()
+QTipLabel::QTipLabel(QWidget *parent) :
+    QLabel(parent, Qt::ToolTip | Qt::BypassGraphicsProxyWidget),
+    m_tipContent(0)
 {}
 
-void Tip::setContent(const QSharedPointer<TipContent> &content)
+QTipLabel::~QTipLabel()
 {
-    m_content = content;
+    if (m_tipContent)
+        delete m_tipContent;
+}
+
+void QTipLabel::setContent(const TipContent &content)
+{
+    if (m_tipContent)
+        delete m_tipContent;
+    m_tipContent = content.clone();
     configure();
 }
 
-const QSharedPointer<TipContent> &Tip::content() const
-{ return m_content; }
+const TipContent &QTipLabel::content() const
+{ return *m_tipContent; }
 
-ColorTip::ColorTip(QWidget *parent) : Tip(parent)
+QT_END_NAMESPACE
+
+ColorTip::ColorTip(QWidget *parent) : QTipLabel(parent)
 {
-    setFrameStyle(QFrame::Box);
     resize(QSize(40, 40));
-
-    m_tilePixMap = tilePixMap(9);
+    m_tilePixMap = tilePixMap(10);
 }
 
 ColorTip::~ColorTip()
@@ -88,13 +99,87 @@ void ColorTip::configure()
     update();
 }
 
+bool ColorTip::handleContentReplacement(const TipContent &content) const
+{
+    if (content.typeId() == ColorContent::COLOR_CONTENT_ID)
+        return true;
+    return false;
+}
+
 void ColorTip::paintEvent(QPaintEvent *event)
 {
-    QPainter painter(this);
-    QRect r(1, 1, width() - 2, height() - 2);
-    painter.drawTiledPixmap(r, m_tilePixMap);
-    painter.setBrush(static_cast<QColorContent *>(content().data())->color());
-    painter.drawRect(rect());
+    const QColor &color = static_cast<const ColorContent &>(content()).color();
 
-    QFrame::paintEvent(event);
+    QPen pen;
+    pen.setWidth(1);
+    if (color.value() > 100)
+        pen.setColor(color.darker());
+    else
+        pen.setColor(color.lighter());
+
+    QPainter painter(this);
+    painter.setPen(pen);
+    painter.setBrush(color);
+    QRect r(1, 1, rect().width() - 2, rect().height() - 2);
+    painter.drawTiledPixmap(r, m_tilePixMap);
+    painter.drawRect(r);
+
+    QLabel::paintEvent(event);
+}
+
+TextTip::TextTip(QWidget *parent) : QTipLabel(parent)
+{
+    setForegroundRole(QPalette::ToolTipText);
+    setBackgroundRole(QPalette::ToolTipBase);
+    ensurePolished();
+    setMargin(1 + style()->pixelMetric(QStyle::PM_ToolTipLabelFrameWidth, 0, this));
+    setFrameStyle(QFrame::NoFrame);
+    setAlignment(Qt::AlignLeft);
+    setIndent(1);
+    setWindowOpacity(style()->styleHint(QStyle::SH_ToolTipLabel_Opacity, 0, this) / 255.0);
+}
+
+TextTip::~TextTip()
+{}
+
+void TextTip::configure()
+{
+    const QString &text = static_cast<const TextContent &>(content()).text();
+    setWordWrap(Qt::mightBeRichText(text));
+    setText(text);
+    QFontMetrics fm(font());
+    QSize extra(1, 0);
+    // Make it look good with the default ToolTip font on Mac, which has a small descent.
+    if (fm.descent() == 2 && fm.ascent() >= 11)
+        ++extra.rheight();
+    resize(sizeHint() + extra);
+}
+
+bool TextTip::handleContentReplacement(const TipContent &content) const
+{
+    if (content.typeId() == TextContent::TEXT_CONTENT_ID)
+        return true;
+    return false;
+}
+
+void TextTip::paintEvent(QPaintEvent *event)
+{
+    QStylePainter p(this);
+    QStyleOptionFrame opt;
+    opt.init(this);
+    p.drawPrimitive(QStyle::PE_PanelTipLabel, opt);
+    p.end();
+
+    QLabel::paintEvent(event);
+}
+
+void TextTip::resizeEvent(QResizeEvent *event)
+{
+    QStyleHintReturnMask frameMask;
+    QStyleOption option;
+    option.init(this);
+    if (style()->styleHint(QStyle::SH_ToolTip_Mask, &option, this, &frameMask))
+        setMask(frameMask.region);
+
+    QLabel::resizeEvent(event);
 }