refactoring

widgets/fancybutton.cpp

@@ -0,0 +1,141 @@
+#include "fancybutton.h"
+
+#include <QDebug>
+#include <QPainter>
+
+namespace chatterino {
+namespace widgets {
+
+FancyButton::FancyButton(QWidget *parent)
+    : QWidget(parent)
+    , _selected()
+    , _mouseOver()
+    , _mouseDown()
+    , _mousePos()
+    , _hoverMultiplier()
+    , _effectTimer()
+    , _mouseEffectColor(QColor(255, 255, 255))
+
+{
+    connect(&_effectTimer, &QTimer::timeout, this, &FancyButton::onMouseEffectTimeout);
+
+    _effectTimer.setInterval(20);
+    _effectTimer.start();
+}
+
+void FancyButton::setMouseEffectColor(QColor color)
+{
+    _mouseEffectColor = color;
+}
+
+void FancyButton::paintEvent(QPaintEvent *)
+{
+    QPainter painter;
+
+    fancyPaint(painter);
+}
+
+void FancyButton::fancyPaint(QPainter &painter)
+{
+    QColor &c = _mouseEffectColor;
+
+    if (_hoverMultiplier > 0) {
+        QRadialGradient gradient(_mousePos.x(), _mousePos.y(), 50, _mousePos.x(), _mousePos.y());
+
+        gradient.setColorAt(0, QColor(c.red(), c.green(), c.blue(), (int)(24 * _hoverMultiplier)));
+        gradient.setColorAt(1, QColor(c.red(), c.green(), c.blue(), (int)(12 * _hoverMultiplier)));
+
+        painter.fillRect(this->rect(), gradient);
+    }
+
+    for (auto effect : _clickEffects) {
+        QRadialGradient gradient(effect.position.x(), effect.position.y(),
+                                 effect.progress * (float)width() * 2, effect.position.x(),
+                                 effect.position.y());
+
+        gradient.setColorAt(
+            0, QColor(c.red(), c.green(), c.blue(), (int)((1 - effect.progress) * 95)));
+        gradient.setColorAt(
+            0.9999, QColor(c.red(), c.green(), c.blue(), (int)((1 - effect.progress) * 95)));
+        gradient.setColorAt(1, QColor(c.red(), c.green(), c.blue(), (int)(0)));
+
+        painter.fillRect(this->rect(), gradient);
+    }
+}
+
+void FancyButton::enterEvent(QEvent *)
+{
+    _mouseOver = true;
+}
+
+void FancyButton::leaveEvent(QEvent *)
+{
+    _mouseOver = false;
+}
+
+void FancyButton::mousePressEvent(QMouseEvent *event)
+{
+    if (event->button() != Qt::LeftButton) {
+        return;
+    }
+
+    _clickEffects.push_back(ClickEffect(event->pos()));
+
+    _mouseDown = true;
+}
+
+void FancyButton::mouseReleaseEvent(QMouseEvent *event)
+{
+    if (event->button() != Qt::LeftButton) {
+        return;
+    }
+
+    _mouseDown = false;
+}
+
+void FancyButton::mouseMoveEvent(QMouseEvent *event)
+{
+    _mousePos = event->pos();
+}
+
+void FancyButton::onMouseEffectTimeout()
+{
+    bool performUpdate = false;
+
+    if (_selected) {
+        if (_hoverMultiplier != 0) {
+            _hoverMultiplier = std::max(0.0, _hoverMultiplier - 0.1);
+            performUpdate = true;
+        }
+    } else if (_mouseOver) {
+        if (_hoverMultiplier != 1) {
+            _hoverMultiplier = std::min(1.0, _hoverMultiplier + 0.5);
+            performUpdate = true;
+        }
+    } else {
+        if (_hoverMultiplier != 0) {
+            _hoverMultiplier = std::max(0.0, _hoverMultiplier - 0.3);
+            performUpdate = true;
+        }
+    }
+
+    if (_clickEffects.size() != 0) {
+        performUpdate = true;
+
+        for (auto it = _clickEffects.begin(); it != _clickEffects.end();) {
+            (*it).progress += _mouseDown ? 0.02 : 0.07;
+
+            if ((*it).progress >= 1.0) {
+                it = _clickEffects.erase(it);
+            } else {
+                it++;
+            }
+        }
+    }
+
+    if (performUpdate) {
+        update();
+    }
+}
+}
+}