add hover effects

Change-Id: I4bcdceb7c3a8b41e6c8b64c0e72ade11a1e4fd81

frame/frame.pro

@@ -28,7 +28,8 @@ SOURCES += main.cpp \
     dbus/dbusmenumanager.cpp \
     dbus/dbusmenu.cpp \
     item/pluginsitem.cpp \
-    controller/dockpluginscontroller.cpp
+    controller/dockpluginscontroller.cpp \
+    util/imagefactory.cpp
 
 HEADERS  += \
     window/mainwindow.h \
@@ -48,7 +49,8 @@ HEADERS  += \
     dbus/dbusmenumanager.h \
     dbus/dbusmenu.h \
     item/pluginsitem.h \
-    controller/dockpluginscontroller.h
+    controller/dockpluginscontroller.h \
+    util/imagefactory.h
 
 dbus_service.files += com.deepin.dde.dock.service
 dbus_service.path = /usr/share/dbus-1/services

frame/item/appitem.cpp

@@ -1,6 +1,7 @@
 #include "appitem.h"
 
 #include "util/themeappicon.h"
+#include "util/imagefactory.h"
 
 #include <QPainter>
 #include <QDrag>
@@ -130,11 +131,14 @@ void AppItem::paintEvent(QPaintEvent *e)
         }
     }
 
+    // icon
+    QPixmap pixmap = DockDisplayMode == Efficient ? m_smallIcon : m_largeIcon;
+    // ligher icon
+    if (m_hover)
+        pixmap = ImageFactory::lighter(pixmap);
+
     // draw icon
-    if (DockDisplayMode == Efficient)
-        painter.drawPixmap(itemRect.center() - m_smallIcon.rect().center(), m_smallIcon);
-    else
-        painter.drawPixmap(itemRect.center() - m_largeIcon.rect().center(), m_largeIcon);
+    painter.drawPixmap(itemRect.center() - pixmap.rect().center(), pixmap);
 }
 
 void AppItem::mouseReleaseEvent(QMouseEvent *e)

frame/item/dockitem.cpp

@@ -12,6 +12,7 @@ DisplayMode DockItem::DockDisplayMode = DisplayMode::Efficient;
 DockItem::DockItem(const ItemType type, QWidget *parent)
     : QWidget(parent),
       m_type(type),
+      m_hover(false),
 
       m_menuManagerInter(new DBusMenuManager(this))
 {
@@ -43,6 +44,24 @@ void DockItem::mousePressEvent(QMouseEvent *e)
         return showContextMenu();
 }
 
+void DockItem::enterEvent(QEvent *e)
+{
+    m_hover = true;
+
+    update();
+
+    return QWidget::enterEvent(e);
+}
+
+void DockItem::leaveEvent(QEvent *e)
+{
+    m_hover = false;
+
+    update();
+
+    return QWidget::leaveEvent(e);
+}
+
 const QRect DockItem::perfectIconRect() const
 {
     const QRect itemRect = rect();

frame/item/dockitem.h

@@ -33,6 +33,8 @@ signals:
 protected:
     void paintEvent(QPaintEvent *e);
     void mousePressEvent(QMouseEvent *e);
+    void enterEvent(QEvent *e);
+    void leaveEvent(QEvent *e);
 
     const QRect perfectIconRect() const;
 
@@ -42,6 +44,7 @@ protected:
 
 protected:
     ItemType m_type;
+    bool m_hover;
 
     DBusMenuManager *m_menuManagerInter;
 

frame/item/launcheritem.cpp

@@ -1,5 +1,6 @@
 #include "launcheritem.h"
 #include "util/themeappicon.h"
+#include "util/imagefactory.h"
 
 #include <QPainter>
 #include <QProcess>
@@ -18,10 +19,11 @@ void LauncherItem::paintEvent(QPaintEvent *e)
         return;
 
     QPainter painter(this);
-    if (DockDisplayMode == Fashion)
-        painter.drawPixmap(rect().center() - m_largeIcon.rect().center(), m_largeIcon);
-    else
-        painter.drawPixmap(rect().center() - m_smallIcon.rect().center(), m_smallIcon);
+
+    QPixmap pixmap = DockDisplayMode == Fashion ? m_largeIcon : m_smallIcon;
+    if (m_hover)
+        pixmap = ImageFactory::lighter(pixmap);
+    painter.drawPixmap(rect().center() - pixmap.rect().center(), pixmap);
 }
 
 void LauncherItem::resizeEvent(QResizeEvent *e)

frame/item/pluginsitem.cpp

@@ -1,7 +1,8 @@
 #include "pluginsitem.h"
-
 #include "pluginsiteminterface.h"
 
+#include "util/imagefactory.h"
+
 #include <QPainter>
 #include <QBoxLayout>
 #include <QMouseEvent>
@@ -92,7 +93,8 @@ void PluginsItem::paintEvent(QPaintEvent *e)
     const QIcon icon = m_pluginInter->itemIcon(m_itemKey);
     const QRect iconRect = perfectIconRect();
     const QPixmap pixmap = icon.pixmap(iconRect.size());
-    painter.drawPixmap(iconRect, pixmap);
+
+    painter.drawPixmap(iconRect, m_hover ? ImageFactory::lighter(pixmap) : pixmap);
 }
 
 bool PluginsItem::eventFilter(QObject *o, QEvent *e)

frame/util/imagefactory.cpp

@@ -0,0 +1,32 @@
+#include "imagefactory.h"
+
+#include <QDebug>
+
+ImageFactory::ImageFactory(QObject *parent)
+    : QObject(parent)
+{
+
+}
+
+QPixmap ImageFactory::lighter(const QPixmap pixmap, const int delta)
+{
+    QImage image = pixmap.toImage();
+
+    const int width = image.width();
+    const int height = image.height();
+    const int bytesPerPixel = image.bytesPerLine() / image.width();
+
+    for (int i(0); i != height; ++i)
+    {
+        uchar *scanLine = image.scanLine(i);
+        for (int j(0); j != width; ++j)
+        {
+            QRgb &rgba = *(QRgb*)scanLine;
+            if (qAlpha(rgba) && (qRed(rgba) || qGreen(rgba) || qBlue(rgba)))
+                rgba = QColor::fromRgba(rgba).lighter(delta).rgba();
+            scanLine += bytesPerPixel;
+        }
+    }
+
+    return QPixmap::fromImage(image);
+}

frame/util/imagefactory.h

@@ -0,0 +1,18 @@
+#ifndef IMAGEFACTORY_H
+#define IMAGEFACTORY_H
+
+#include <QObject>
+#include <QPixmap>
+#include <QImage>
+
+class ImageFactory : public QObject
+{
+    Q_OBJECT
+
+public:
+    explicit ImageFactory(QObject *parent = 0);
+
+    static QPixmap lighter(const QPixmap pixmap, const int delta = 120);
+};
+
+#endif // IMAGEFACTORY_H