use selected preset icon on preset chooser

use selected preset icon on preset chooser instead of preset editor

it seems more obvious for some users that clicking on the preset icon
should open the preset selector, so changing that...

libs/ui/kis_paintop_box.cc

@@ -114,7 +114,7 @@ KisPaintopBox::KisPaintopBox(KisViewManager *viewManager, QWidget *parent, const
     m_brushEditorPopupButton->setIconSize(QSize(iconsize, iconsize));
     m_brushEditorPopupButton->setFlat(true);
 
-    m_presetSelectorPopupButton = new KisPopupButton(this);
+    m_presetSelectorPopupButton = new KisIconWidget(this);
     m_presetSelectorPopupButton->setIcon(KisIconUtils::loadIcon("paintop_settings_01"));
     m_presetSelectorPopupButton->setToolTip(i18n("Choose brush preset"));
     m_presetSelectorPopupButton->setFixedSize(buttonsize, buttonsize);
@@ -653,8 +653,8 @@ void KisPaintopBox::setCurrentPaintop(KisPaintOpPresetSP preset)
     m_presetConnections.addConnection(m_optionWidget, SIGNAL(sigDropLockedConfig(KisPropertiesConfigurationSP)), this, SLOT(slotDropLockedOption(KisPropertiesConfigurationSP)));
 
 
-    // load the current brush engine icon for the brush editor toolbar button
-    m_brushEditorPopupButton->setThumbnail(preset->image());
+    // load the current preset icon to the preset selector toolbar button
+    m_presetSelectorPopupButton->setThumbnail(preset->image());
     m_presetsEditor->editorWidget()->setCurrentPaintOpId(paintop.id());
 
 

libs/ui/kis_paintop_box.h

@@ -180,7 +180,7 @@ private:
 
     KisPresetSaveWidget*                m_savePresetWidget {0};
     KisIconWidget*                      m_brushEditorPopupButton {0};
-    KisPopupButton*                     m_presetSelectorPopupButton {0};
+    KisIconWidget*                      m_presetSelectorPopupButton {0};
     KisCompositeOpComboBox*             m_cmbCompositeOp {0};
     QToolButton*                        m_eraseModeButton {0};
     QToolButton*                        m_alphaLockButton {0};