style with the PushButton svg elements when is not editable

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=866345

widgets/combobox.cpp

@@ -21,11 +21,15 @@
 
 #include <KComboBox>
 #include <QPainter>
+#include <QApplication>
 
 #include <KMimeType>
+#include <KIconEffect>
+#include <KIconLoader>
 
 #include "theme.h"
-#include "svg.h"
+#include "panelsvg.h"
+#include "animator.h"
 
 namespace Plasma
 {
@@ -33,23 +37,97 @@ namespace Plasma
 class ComboBoxPrivate
 {
 public:
-    ComboBoxPrivate()
+    ComboBoxPrivate(ComboBox *comboBox)
+         : q(comboBox),
+           background(0),
+           activeBackgroundPixmap(0)
     {
     }
 
     ~ComboBoxPrivate()
     {
     }
+
+    void renderActiveBackgroundPixmap();
+    void syncActiveRect();
+    void syncBorders();
+    void elementAnimationFinished(int id);
+
+    ComboBox *q;
+
+    PanelSvg *background;
+    QPixmap *activeBackgroundPixmap;
+    int animId;
+    QRectF activeRect;
 };
 
+void ComboBoxPrivate::renderActiveBackgroundPixmap()
+{
+    background->setElementPrefix("active");
+
+    activeBackgroundPixmap = new QPixmap(activeRect.size().toSize());
+    activeBackgroundPixmap->fill(Qt::transparent);
+
+    QPainter painter(activeBackgroundPixmap);
+    background->paintPanel(&painter);
+}
+
+void ComboBoxPrivate::syncActiveRect()
+{
+    background->setElementPrefix("normal");
+
+    qreal left, top, right, bottom;
+    background->getMargins(left, top, right, bottom);
+
+    background->setElementPrefix("active");
+    qreal activeLeft, activeTop, activeRight, activeBottom;
+    background->getMargins(activeLeft, activeTop, activeRight, activeBottom);
+
+    activeRect = QRectF(QPointF(0,0), q->size());
+    activeRect.adjust(left - activeLeft, top - activeTop, -(right - activeRight), -(bottom - activeBottom));
+
+    background->setElementPrefix("normal");
+}
+
+void ComboBoxPrivate::syncBorders()
+{
+    //set margins from the normal element
+    qreal left, top, right, bottom;
+
+    background->setElementPrefix("normal");
+    background->getMargins(left, top, right, bottom);
+    q->setContentsMargins(left, top, right, bottom);
+
+    //calc the rect for the over effect
+    syncActiveRect();
+}
+
+void ComboBoxPrivate::elementAnimationFinished(int id)
+{
+    if (id == animId) {
+        animId = -1;
+    }
+}
+
+
 ComboBox::ComboBox(QGraphicsWidget *parent)
     : QGraphicsProxyWidget(parent),
-      d(new ComboBoxPrivate)
+      d(new ComboBoxPrivate(this))
 {
     KComboBox* native = new KComboBox;
     connect(native, SIGNAL(activated(const QString &)), this, SIGNAL(activated(const QString &)));
     setWidget(native);
     native->setAttribute(Qt::WA_NoSystemBackground);
+
+    d->background = new PanelSvg(this);
+    d->background->setImagePath("widgets/button");
+    d->background->setCacheAllRenderedPanels(true);
+    d->background->setElementPrefix("normal");
+
+    d->syncBorders();
+    setAcceptHoverEvents(true);
+    connect(Plasma::Animator::self(), SIGNAL(elementAnimationFinished(int)), this, SLOT(elementAnimationFinished(int)));
+    connect(Plasma::Theme::defaultTheme(), SIGNAL(themeChanged()), SLOT(syncBorders()));
 }
 
 ComboBox::~ComboBox()
@@ -89,9 +167,124 @@ void ComboBox::clear()
 
 void ComboBox::resizeEvent(QGraphicsSceneResizeEvent *event)
 {
+   if (d->background) {
+        //resize needed panels
+        d->syncActiveRect();
+
+        d->background->setElementPrefix("focus");
+        d->background->resizePanel(size());
+
+        d->background->setElementPrefix("active");
+        d->background->resizePanel(d->activeRect.size());
+
+        d->background->setElementPrefix("normal");
+        d->background->resizePanel(size());
+
+        if (d->activeBackgroundPixmap) {
+            delete d->activeBackgroundPixmap;
+            d->activeBackgroundPixmap = 0;
+        }
+   }
+
     QGraphicsProxyWidget::resizeEvent(event);
 }
 
+void ComboBox::paint(QPainter *painter,
+                       const QStyleOptionGraphicsItem *option,
+                       QWidget *widget)
+{
+    if (!styleSheet().isNull() || nativeWidget()->isEditable()) {
+        QGraphicsProxyWidget::paint(painter, option, widget);
+        return;
+    }
+
+    QPixmap bufferPixmap;
+
+    //Normal button, pressed or not
+    if (isEnabled()) {
+        d->background->setElementPrefix("normal");
+        d->background->paintPanel(painter);
+    //flat or disabled
+    } else if (!isEnabled()) {
+        bufferPixmap = QPixmap(rect().size().toSize());
+        bufferPixmap.fill(Qt::transparent);
+
+        QPainter buffPainter(&bufferPixmap);
+        d->background->paintPanel(&buffPainter);
+        buffPainter.setCompositionMode(QPainter::CompositionMode_DestinationIn);
+        buffPainter.fillRect(bufferPixmap.rect(), QColor(0,0,0,128));
+
+        painter->drawPixmap( 0, 0, bufferPixmap);
+    }
+
+    //if is under mouse draw the animated glow overlay
+    if (isEnabled() && acceptHoverEvents()) {
+        if (d->animId != -1) {
+            painter->drawPixmap(d->activeRect.topLeft(), Plasma::Animator::self()->currentPixmap(d->animId) );
+        } else if (isUnderMouse()) {
+            if (d->activeBackgroundPixmap == 0) {
+                d->renderActiveBackgroundPixmap();
+            }
+            painter->drawPixmap( d->activeRect.topLeft(), *d->activeBackgroundPixmap );
+        }
+    }
+
+    if (nativeWidget()->hasFocus()) {
+        d->background->setElementPrefix("focus");
+        d->background->paintPanel(painter);
+    }
+
+
+    painter->setPen(Plasma::Theme::defaultTheme()->color(Theme::ButtonTextColor));
+
+    QStyleOptionComboBox comboOpt;
+
+    comboOpt.initFrom(nativeWidget());
+
+    comboOpt.palette.setColor(QPalette::ButtonText, Plasma::Theme::defaultTheme()->color(Plasma::Theme::ButtonTextColor));
+    comboOpt.currentIcon = nativeWidget()->itemIcon(nativeWidget()->currentIndex());
+    comboOpt.currentText = nativeWidget()->itemText(nativeWidget()->currentIndex());
+    comboOpt.editable = false;
+
+    nativeWidget()->style()->drawControl(QStyle::CE_ComboBoxLabel, &comboOpt, painter, nativeWidget());
+    comboOpt.rect = nativeWidget()->style()->subControlRect(QStyle::CC_ComboBox, &comboOpt, QStyle::SC_ComboBoxArrow, nativeWidget());
+    nativeWidget()->style()->drawPrimitive(QStyle::PE_IndicatorArrowDown, &comboOpt, painter, nativeWidget());
+}
+
+void ComboBox::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
+{
+    if (d->animId != -1) {
+        Plasma::Animator::self()->stopElementAnimation(d->animId);
+    }
+    d->animId = Plasma::Animator::self()->animateElement(this, Plasma::Animator::AppearAnimation);
+
+    d->background->setElementPrefix("active");
+
+    if (!d->activeBackgroundPixmap) {
+        d->renderActiveBackgroundPixmap();
+    }
+    Plasma::Animator::self()->setInitialPixmap( d->animId, *d->activeBackgroundPixmap );
+
+    QGraphicsProxyWidget::hoverEnterEvent(event);
+}
+
+void ComboBox::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
+{
+    if (d->animId != -1) {
+        Plasma::Animator::self()->stopElementAnimation(d->animId);
+    }
+    d->animId = Plasma::Animator::self()->animateElement(this, Plasma::Animator::DisappearAnimation);
+
+    d->background->setElementPrefix("active");
+
+    if (!d->activeBackgroundPixmap) {
+        d->renderActiveBackgroundPixmap();
+    }
+    Plasma::Animator::self()->setInitialPixmap( d->animId, *d->activeBackgroundPixmap );
+
+    QGraphicsProxyWidget::hoverLeaveEvent(event);
+}
+
 } // namespace Plasma
 
 #include <combobox.moc>

widgets/combobox.h

@@ -86,9 +86,18 @@ Q_SIGNALS:
 
 protected:
     void resizeEvent(QGraphicsSceneResizeEvent *event);
+    void paint(QPainter *painter,
+               const QStyleOptionGraphicsItem *option,
+               QWidget *widget);
+    void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
+    void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
 
 private:
     ComboBoxPrivate * const d;
+
+    friend class ComboBoxPrivate;
+    Q_PRIVATE_SLOT(d, void syncBorders())
+    Q_PRIVATE_SLOT(d, void elementAnimationFinished(int id))
 };
 
 } // namespace Plasma