From 0f8fb0c5b77b512becf23ce2667a5ad8c55ed09b Mon Sep 17 00:00:00 2001
From: Unknown <addi@king-arthur.eu>
Date: Fri, 17 Mar 2017 10:49:29 +0100
Subject: [PATCH] Rework colorLineEdit

---
 colorlineedit.cpp | 84 ++++++++++++++---------------------------------
 colorlineedit.h   | 18 ++++------
 2 files changed, 31 insertions(+), 71 deletions(-)

diff --git a/colorlineedit.cpp b/colorlineedit.cpp
index 959c0b2..9ae0b26 100644
--- a/colorlineedit.cpp
+++ b/colorlineedit.cpp
@@ -1,81 +1,45 @@
 #include "colorlineedit.h"
 
-#include <QStyle>
-#include <QToolButton>
+QPainter *ColorLineEdit::painter = new QPainter();
 
-ColorLineEdit::ColorLineEdit(QWidget *parent) :
-    QLineEdit(parent)
+ColorLineEdit::ColorLineEdit(QWidget *parent) : QLineEdit(parent)
 {
-    // Create the search button and set its icon, cursor, and stylesheet
-    this->mColorButton = new QToolButton(this);
-    this->mColorButton->setFixedSize(20,20);
-    this->mColorButton->setCursor(Qt::PointingHandCursor);
-    this->mColorButton->setStyleSheet(this->buttonStyleSheetForCurrentState());
+    action = this->addAction(defaultIcon, QLineEdit::LeadingPosition);
+    connect(action, &QAction::triggered, this, &ColorLineEdit::selectColor);
 
-    // Update the search button when the text changes
-    QObject::connect(this, SIGNAL(textChanged(QString)), SLOT(updateColorButton(QString)));
-    QObject::connect(this->mColorButton,SIGNAL(clicked(bool)), SLOT(selectColor()));
-    // Some stylesheet and size corrections for the text box
-    //this->setPlaceholderText(tr("Search"));
-    //this->setStyleSheet(this->styleSheetForCurrentState());
-
-    int frameWidth = this->style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
-    QSize minSizeHint = this->minimumSizeHint();
-    this->setMinimumSize(qMax(minSizeHint.width(), this->mColorButton->sizeHint().width() + frameWidth * 2 + 2),
-                         qMax(minSizeHint.height(), this->mColorButton->sizeHint().height() + frameWidth * 2+2));
+    connect(this, &QLineEdit::textChanged, this, &ColorLineEdit::updateColorButton);
 }
 
-void ColorLineEdit::resizeEvent(QResizeEvent *event)
-{
-    Q_UNUSED(event);
-    QSize size = this->mColorButton->sizeHint();
-    int frameWidth = this->style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
-    this->mColorButton->move(this->rect().right() - frameWidth - size.width() - 2, (this->rect().bottom() + 2 - size.height()) / 2);
-}
+
 void ColorLineEdit::selectColor()
 {
     const QColorDialog::ColorDialogOptions options = QFlag(QColorDialog::DontUseNativeDialog);
-    const QColor color = QColorDialog::getColor(this->text(), this, tr("select color"),options);
+    QColor current = QColor(this->text());
+
+    if (!current.isValid()) {
+        current = Qt::white;
+    }
+    const QColor color = QColorDialog::getColor(current, this, NULL, options);
 
     if (color.isValid()) {
         this->setText(color.name());
     }
 }
 
+inline const QIcon ColorLineEdit::getColorIcon(const QColor &color)
+{
+    QPixmap pixmap(16, 16);
+    pixmap.fill(color);
+    painter->begin(&pixmap);
+    painter->drawRect(0, 0, pixmap.size().height() - 1, pixmap.size().width() - 1);
+    painter->end();
+    return QIcon(pixmap);
+}
+
 void ColorLineEdit::updateColorButton(const QString &text)
 {
     const QColor color = QColor(text);
-    if (color.isValid())
-    {
-        // We have some text in the box - set the button to clear the text
-        QPixmap pixmap(this->height(),this->height());
-        pixmap.fill(color);
-        QIcon icon(pixmap);
-        this->mColorButton->setIcon(icon);
-    }
-    else
-    {
-        // The text box is empty - make the icon do nothing when clicked
-        QIcon icon(":/color");
-        this->mColorButton->setIcon(icon);
-    }
+    const QIcon icon = color.isValid() ? getColorIcon(color) : defaultIcon;
 
-    //this->mColorButton->setStyleSheet(this->buttonStyleSheetForCurrentState());
-}
-
-
-QString ColorLineEdit::buttonStyleSheetForCurrentState() const
-{
-    QString style;
-    style += "QToolButton {";
-    style += "border: 1px solid black; margin: 0; padding: 0;";
-    style += "}";
-
-    /*if (!this->text().isEmpty())
-    {
-        style += "QToolButton:hover { background-image: url(:/images/esf-clear-hover.png); }";
-        style += "QToolButton:pressed { background-image: url(:/images/esf-clear-active.png); }";
-    }*/
-
-    return style;
+    action->setIcon(icon);
 }
diff --git a/colorlineedit.h b/colorlineedit.h
index 06c3aa9..0a58318 100644
--- a/colorlineedit.h
+++ b/colorlineedit.h
@@ -1,13 +1,11 @@
 #ifndef COLORLINEEDIT_H
 #define COLORLINEEDIT_H
+#include <QAction>
 #include <QColorDialog>
 #include <QLineEdit>
-#include <QPushButton>
+#include <QPainter>
 
-class QToolButton;
-
-class ColorLineEdit : public QLineEdit
-{
+class ColorLineEdit : public QLineEdit {
     Q_OBJECT
 
 public:
@@ -16,17 +14,15 @@ public:
 public slots:
     void selectColor();
 
-protected:
-    void resizeEvent(QResizeEvent *event);
-
 private slots:
     void updateColorButton(const QString &text);
 
 private:
-    //QString styleSheetForCurrentState() const;
-    QString buttonStyleSheetForCurrentState() const;
+    QAction *action;
+    const QIcon defaultIcon = QIcon(":/color");
+    static QPainter *painter;
 
-    QToolButton *mColorButton;
+    static inline const QIcon getColorIcon(const QColor &color) ;
 };