new sexy lineedit widget with builtin clear button

python/plugins/sextante/gui/FilterLineEdit.py

@@ -0,0 +1,60 @@
+# -*- coding: utf-8 -*-
+
+"""
+***************************************************************************
+    FilterEdit.py
+    ---------------------
+    Date                 : October 2012
+    Copyright            : (C) 2012 by Alexander Bruy
+    Email                : alexander dot bruy at gmail dot com
+***************************************************************************
+*                                                                         *
+*   This program is free software; you can redistribute it and/or modify  *
+*   it under the terms of the GNU General Public License as published by  *
+*   the Free Software Foundation; either version 2 of the License, or     *
+*   (at your option) any later version.                                   *
+*                                                                         *
+***************************************************************************
+"""
+
+__author__ = 'Alexander Bruy'
+__date__ = 'October 2012'
+__copyright__ = '(C) 2012, Alexander Bruy'
+# This will get replaced with a git SHA1 when you do a git archive
+__revision__ = '$Format:%H$'
+
+from PyQt4.QtCore import *
+from PyQt4.QtGui import *
+
+import sextante.resources_rc
+
+class FilterLineEdit(QLineEdit):
+    def __init__(self, parent=None, placeholder="Filter"):
+        QLineEdit.__init__(self, parent)
+
+        if hasattr(self, "setPlaceholderText"):
+            self.setPlaceholderText(placeholder)
+
+        self.btnClear = QToolButton(self)
+        self.btnClear.setIcon(QIcon(":/sextante/images/clear.png"))
+        self.btnClear.setCursor(Qt.ArrowCursor)
+        self.btnClear.setStyleSheet("QToolButton { border: none; padding: 0px; }")
+        self.btnClear.hide()
+
+        self.btnClear.clicked.connect(self.clear)
+        self.textChanged.connect(self.updateClearButton)
+
+        frameWidth = self.style().pixelMetric(QStyle.PM_DefaultFrameWidth)
+        self.setStyleSheet(QString("QLineEdit { padding-right: %1px; } ").arg(self.btnClear.sizeHint().width() + frameWidth + 1))
+        msz = self.minimumSizeHint()
+        self.setMinimumSize(max(msz.width(), self.btnClear.sizeHint().height() + frameWidth * 2 + 2),
+                            max(msz.height(), self.btnClear.sizeHint().height() + frameWidth * 2 + 2))
+
+    def resizeEvent(self, event):
+        sz = self.btnClear.sizeHint()
+        frameWidth = self.style().pixelMetric(QStyle.PM_DefaultFrameWidth)
+        self.btnClear.move(self.rect().right() - frameWidth - sz.width(),
+                           (self.rect().bottom() + 1 - sz.height())/2)
+
+    def updateClearButton(self, text):
+        self.btnClear.setVisible(not text.isEmpty())

python/plugins/sextante/gui/SextanteToolbox.py

@@ -42,8 +42,6 @@
 
 from sextante.ui.ui_SextanteToolbox import Ui_SextanteToolbox
 
-import sextante.resources_rc
-
 try:
     _fromUtf8 = QString.fromUtf8
 except AttributeError:
@@ -57,13 +55,10 @@ def __init__(self, iface):
 
         self.iface=iface
 
-        self.btnClear.setIcon(QIcon(":/sextante/images/clear.png"))
-
         self.externalAppsButton.clicked.connect(self.configureProviders)
         self.searchBox.textChanged.connect(self.fillTree)
         self.algorithmTree.customContextMenuRequested.connect(self.showPopupMenu)
         self.algorithmTree.doubleClicked.connect(self.executeAlgorithm)
-        self.btnClear.clicked.connect(self.clearFilter)
 
         self.fillTree()
 
@@ -73,9 +68,6 @@ def algsListHasChanged(self):
     def updateTree(self):
         Sextante.updateAlgsList()
 
-    def clearFilter(self):
-        self.searchBox.clear()
-
     def configureProviders(self):
         webbrowser.open("http://docs.qgis.org/html/en/user_manual/sextante/3rdParty.html")
         #=======================================================================

python/plugins/sextante/ui/SextanteToolbox.ui

@@ -30,21 +30,7 @@ additional algorithm providers</string>
      </widget>
     </item>
     <item>
-     <layout class="QHBoxLayout" name="horizontalLayout">
-      <property name="spacing">
-       <number>2</number>
-      </property>
-      <item>
-       <widget class="QLineEdit" name="searchBox"/>
-      </item>
-      <item>
-       <widget class="QToolButton" name="btnClear">
-        <property name="text">
-         <string>...</string>
-        </property>
-       </widget>
-      </item>
-     </layout>
+     <widget class="FilterLineEdit" name="searchBox"/>
     </item>
     <item>
      <widget class="QTreeWidget" name="algorithmTree">
@@ -64,6 +50,13 @@ additional algorithm providers</string>
    </layout>
   </widget>
  </widget>
+ <customwidgets>
+  <customwidget>
+   <class>FilterLineEdit</class>
+   <extends>QLineEdit</extends>
+   <header>sextante.gui.FilterLineEdit</header>
+  </customwidget>
+ </customwidgets>
  <resources/>
  <connections/>
 </ui>