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Adds autocompletion hint

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When the user starts typing a prefix a hint will show in the search field.
This commit is contained in:
Artur Spychaj 2014-08-17 23:08:19 +02:00
parent cfe87ad58c
commit a8d81b568c
2 changed files with 52 additions and 8 deletions
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53
zeal/widgets/zealsearchedit.cpp
View File

@ -2,13 +2,18 @@
#include <QCoreApplication>
#include <QKeyEvent>
#include <QDebug>
#include <QCompleter>
#include "../zealsearchquery.h"
ZealSearchEdit::ZealSearchEdit(QWidget *parent) :
LineEdit(parent)
{
completionLabel = new QLabel(this);
completionLabel->setObjectName("completer");
completionLabel->setStyleSheet("QLabel#completer { color: gray; }");
completionLabel->setFont(this->font());
connect(this, &ZealSearchEdit::textChanged, this, &ZealSearchEdit::showCompletions);
}
void ZealSearchEdit::setTreeView(QTreeView *view)
@ -21,10 +26,10 @@ void ZealSearchEdit::setTreeView(QTreeView *view)
// Makes the line edit use autocompletions.
void ZealSearchEdit::setCompletions(QStringList completions)
{
QCompleter *completer = new QCompleter(completions, this);
completer->setCompletionMode(QCompleter::InlineCompletion);
completer->setCaseSensitivity(Qt::CaseInsensitive);
this->setCompleter(completer);
prefixCompleter = new QCompleter(completions, this);
prefixCompleter->setCompletionMode(QCompleter::InlineCompletion);
prefixCompleter->setCaseSensitivity(Qt::CaseInsensitive);
prefixCompleter->setWidget(this);
}
// Clear input with consideration to docset filters
@ -61,9 +66,10 @@ bool ZealSearchEdit::eventFilter(QObject *obj, QEvent *ev)
// Autocompletes the prefixes.
if (keyEvent->key() == Qt::Key_Tab) {
QString currentCompletion = this->completer()->currentCompletion();
if (!currentCompletion.isEmpty()) {
this->setText(currentCompletion);
QString currentText = text();
QString completed = this->currentCompletion(currentText);
if (!completed.isEmpty()) {
this->setText(completed);
return true;
}
}
@ -71,6 +77,13 @@ bool ZealSearchEdit::eventFilter(QObject *obj, QEvent *ev)
return LineEdit::eventFilter(obj, ev);
}
void ZealSearchEdit::resizeEvent(QResizeEvent *ev)
{
QString text = this->text();
showCompletions(text);
LineEdit::resizeEvent(ev);
}
void ZealSearchEdit::focusInEvent(QFocusEvent * evt)
{
// Focus on the widget.
@ -94,3 +107,27 @@ void ZealSearchEdit::mousePressEvent(QMouseEvent *ev)
}
focusing = false;
}
QString ZealSearchEdit::currentCompletion(const QString &text)
{
if (text.isEmpty()) {
return QString();
} else {
return this->prefixCompleter->currentCompletion();
}
}
void ZealSearchEdit::showCompletions(const QString &newValue)
{
int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
int textWidth = fontMetrics().width(newValue);
this->prefixCompleter->setCompletionPrefix(this->text());
QString completed = this->currentCompletion(newValue).mid(newValue.size());
QSize labelSize(fontMetrics().width(completed), size().height());
completionLabel->setMinimumSize(labelSize);
completionLabel->move(frameWidth + 2 + textWidth, frameWidth);
completionLabel->setText(completed);
}

7
zeal/widgets/zealsearchedit.h
View File

@ -3,6 +3,8 @@
#include <QEvent>
#include <QTreeView>
#include <QCompleter>
#include <QLabel>
#include "../lineedit.h"
class ZealSearchEdit : public LineEdit
@ -18,14 +20,19 @@ protected:
bool eventFilter(QObject *obj, QEvent *ev);
void focusInEvent(QFocusEvent *);
void mousePressEvent(QMouseEvent *ev);
void resizeEvent(QResizeEvent *ev);
signals:
public slots:
void clear();
QString currentCompletion(const QString &text);
void showCompletions(const QString &text);
private:
QCompleter *prefixCompleter;
QTreeView *treeView;
QLabel *completionLabel;
bool focusing;
};