Merge pull request #4074 from Chocobo1/lineEdit

Use QLineEdit built-in ClearButton

src/gui/lineedit/src/lineedit.cpp

@@ -8,21 +8,28 @@
 ****************************************************************************/
 
 #include "lineedit.h"
-#include <QToolButton>
+#include <algorithm>
 #include <QStyle>
-#include <QtDebug>
+#include <QToolButton>
+#include <QResizeEvent>
 
 LineEdit::LineEdit(QWidget *parent)
     : QLineEdit(parent)
 {
-  searchButton = new QToolButton(this);
+    int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
+
     QPixmap pixmap1(":/lineeditimages/search.png");
+    searchButton = new QToolButton(this);
     searchButton->setIcon(QIcon(pixmap1));
     searchButton->setIconSize(pixmap1.size());
     searchButton->setCursor(Qt::ArrowCursor);
     searchButton->setStyleSheet("QToolButton { border: none; padding: 2px; }");
-  clearButton = new QToolButton(this);
+
+    int clearButtonSizeHintWidth = 0;
+    int clearButtonSizeHintHeight = 0;
+#if (QT_VERSION < QT_VERSION_CHECK(5, 0, 0))
     QPixmap pixmap2(":/lineeditimages/clear_left.png");
+    clearButton = new QToolButton(this);
     clearButton->setIcon(QIcon(pixmap2));
     clearButton->setIconSize(pixmap2.size());
     clearButton->setCursor(Qt::ArrowCursor);
@@ -30,26 +37,36 @@ LineEdit::LineEdit(QWidget *parent)
     clearButton->setToolTip(tr("Clear the text"));
     clearButton->hide();
     connect(clearButton, SIGNAL(clicked()), this, SLOT(clear()));
-  connect(this, SIGNAL(textChanged(const QString&)), this, SLOT(updateCloseButton(const QString&)));
+    connect(this, SIGNAL(textChanged(const QString &)), this, SLOT(updateCloseButton(const QString &)));
-  int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
+
-  setStyleSheet(QString("QLineEdit { padding-right: %1px; padding-left: %2px; }").arg(clearButton->sizeHint().width() + frameWidth + 1).arg(clearButton->sizeHint().width() + frameWidth + 1));
+    clearButtonSizeHintWidth = clearButton->sizeHint().width();
-  QSize msz = minimumSizeHint();
+    clearButtonSizeHintHeight = clearButton->sizeHint().height();
-  setMinimumSize(qMax(msz.width(), clearButton->sizeHint().width() + searchButton->sizeHint().width() + frameWidth * 2 + 2),
+    setStyleSheet(QString("QLineEdit { padding-left: %1px; padding-right: %2px; }").arg(searchButton->sizeHint().width()).arg(clearButtonSizeHintWidth));
-                 qMax(msz.height(), clearButton->sizeHint().height() + frameWidth * 2 + 2));
+#else
+    setClearButtonEnabled(true);
+    setStyleSheet(QString("QLineEdit { padding-left: %1px; }").arg(searchButton->sizeHint().width()));  // padding between text and widget borders
+#endif
+
+    QSize msz = sizeHint();
+    setMinimumSize(qMax(msz.width(), searchButton->sizeHint().width() + clearButtonSizeHintWidth),
+                   std::max({ msz.height(), searchButton->sizeHint().height(), clearButtonSizeHintHeight }) + frameWidth * 2);
 }
 
-void LineEdit::resizeEvent(QResizeEvent *)
+void LineEdit::resizeEvent(QResizeEvent *e)
 {
-  QSize sz = searchButton->sizeHint();
     int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
-  searchButton->move(rect().left() + frameWidth, (rect().bottom() + 2 - sz.height())/2);
+
-  sz = clearButton->sizeHint();
+    QSize sz = searchButton->sizeHint();
-  clearButton->move(rect().right() - frameWidth - sz.width(),
+    searchButton->move(frameWidth, (e->size().height() - sz.height()) / 2);
-                    (rect().bottom() + 2 - sz.height())/2);
+#if (QT_VERSION < QT_VERSION_CHECK(5, 0, 0))
+    QSize cz = clearButton->sizeHint();
+    clearButton->move((e->size().width() - frameWidth - cz.width()), (e->size().height() - sz.height()) / 2);
+#endif
 }
 
-void LineEdit::updateCloseButton(const QString& text)
+void LineEdit::updateCloseButton(const QString &text)
 {
+#if (QT_VERSION < QT_VERSION_CHECK(5, 0, 0))
     clearButton->setVisible(!text.isEmpty());
+#endif
 }
-

src/gui/lineedit/src/lineedit.h

@@ -12,26 +12,26 @@
 
 #include <QLineEdit>
 
-QT_BEGIN_NAMESPACE
 class QToolButton;
-QT_END_NAMESPACE
 
 class LineEdit : public QLineEdit
 {
     Q_OBJECT
 
 public:
-  LineEdit(QWidget *parent = 0);
+    LineEdit(QWidget *parent);
 
 protected:
-  void resizeEvent(QResizeEvent *);
+    void resizeEvent(QResizeEvent *e);
 
 private slots:
     void updateCloseButton(const QString &text);
 
 private:
-  QToolButton *clearButton;
     QToolButton *searchButton;
+#if (QT_VERSION < QT_VERSION_CHECK(5, 0, 0))
+    QToolButton *clearButton;
+#endif
 };
 
 #endif // LIENEDIT_H

src/searchengine/searchengine.cpp

@@ -64,7 +64,7 @@
 /*SEARCH ENGINE START*/
 SearchEngine::SearchEngine(MainWindow* parent)
     : QWidget(parent)
-    , search_pattern(new LineEdit)
+    , search_pattern(new LineEdit(this))
     , mp_mainWindow(parent)
 {
     setupUi(this);