From df8a8a5ec9dfe61cf5b1efa9b5fe414fc39296da Mon Sep 17 00:00:00 2001
From: Claudio Valerio <claudio@open-sankore.org>
Date: Wed, 4 Jan 2012 13:21:12 +0100
Subject: [PATCH] added class UBWidgetList

---
 Sankore_3.1.pro                     |   2 +
 src/customWidgets/UBWidgetList.cpp  | 133 ++++++++++++++++++++++++++++
 src/customWidgets/UBWidgetList.h    |  44 +++++++++
 src/customWidgets/customWidgets.pri |   5 ++
 4 files changed, 184 insertions(+)
 create mode 100644 src/customWidgets/UBWidgetList.cpp
 create mode 100644 src/customWidgets/UBWidgetList.h
 create mode 100644 src/customWidgets/customWidgets.pri

diff --git a/Sankore_3.1.pro b/Sankore_3.1.pro
index 3005b8b1..5dfa1b33 100644
--- a/Sankore_3.1.pro
+++ b/Sankore_3.1.pro
@@ -53,6 +53,7 @@ include(src/desktop/desktop.pri)
 include(src/web/web.pri)
 include(src/softwareupdate/softwareupdate.pri)
 include(src/transition/transition.pri)
+include(src/customWidgets/customWidgets.pri)
 
 DEPENDPATH += src/pdf-merger
 INCLUDEPATH += src/pdf-merger
@@ -398,3 +399,4 @@ INSTALLS = UB_ETC \
    UB_THIRDPARTY_INTERACTIVE
 
 OTHER_FILES +=
+
diff --git a/src/customWidgets/UBWidgetList.cpp b/src/customWidgets/UBWidgetList.cpp
new file mode 100644
index 00000000..2daf1576
--- /dev/null
+++ b/src/customWidgets/UBWidgetList.cpp
@@ -0,0 +1,133 @@
+#include <QDebug>
+#include "UBWidgetList.h"
+
+UBWidgetList::UBWidgetList(QWidget* parent, eWidgetListOrientation orientation, const char* name):QScrollArea(parent)
+  , mpLayout(NULL)
+  , mpContainer(NULL)
+  , mMargin(5)
+  , mpEmptyLabel(NULL)
+{
+   setObjectName(name);
+   mOrientation = orientation;
+   mpContainer = new QWidget(this);
+   mWidgets.clear();
+
+   if(eWidgetListOrientation_Vertical == orientation){
+       setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
+       setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+       mpLayout = new QVBoxLayout(mpContainer);
+       mpContainer->resize(width(), mpContainer->height());
+   }else{
+       setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
+       setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+       mpLayout = new QHBoxLayout(mpContainer);
+       mpContainer->resize(mpContainer->width(), height());
+   }
+   mpLayout->setContentsMargins(margin(), margin(), margin(), margin());
+   mpContainer->setLayout(mpLayout);
+   setWidget(mpContainer);
+}
+
+UBWidgetList::~UBWidgetList()
+{
+    if(NULL != mpEmptyLabel){
+        delete mpEmptyLabel;
+        mpEmptyLabel = NULL;
+    }
+    if(NULL != mpLayout){
+        delete mpLayout;
+        mpLayout = NULL;
+    }
+    if(NULL != mpContainer){
+        delete mpContainer;
+        mpContainer = NULL;
+    }
+}
+
+void UBWidgetList::addWidget(QWidget *widget)
+{
+    if(NULL != mpLayout){
+        updateSize(true, widget);
+        mpLayout->addWidget(widget);
+        mWidgets << widget;
+    }
+}
+
+void UBWidgetList::removeWidget(QWidget *widget)
+{
+    if(NULL != mpLayout){
+        mpLayout->removeWidget(widget);
+        mWidgets.remove(mWidgets.indexOf(widget));
+        updateSize(false, widget);
+        widget->setVisible(false);
+    }
+}
+
+void UBWidgetList::updateSize(bool widgetAdded, QWidget *widget)
+{
+    float scaleFactor;
+    int newWidgetWidth;
+    int newWidgetHeight;
+
+    if(eWidgetListOrientation_Vertical == mOrientation){
+        scaleFactor = (float)widget->width() / (float)mpContainer->width();
+    }else{
+        scaleFactor = (float)widget->height() / (float)mpContainer->height();
+    }
+
+    newWidgetWidth = widget->width()*scaleFactor;
+    newWidgetHeight = widget->height()*scaleFactor;
+
+    widget->resize(newWidgetWidth, newWidgetHeight);
+
+    // Now we have to update the container
+    if(eWidgetListOrientation_Vertical == mOrientation){
+        if(widgetAdded){
+            mpContainer->resize(mpContainer->width(), mpContainer->height() + newWidgetHeight);
+        }else{
+            mpContainer->resize(mpContainer->width(), mpContainer->height() - newWidgetHeight);
+        }
+    }else{
+        if(widgetAdded){
+            mpContainer->resize(mpContainer->width() + newWidgetWidth, mpContainer->height());
+        }else{
+            mpContainer->resize(mpContainer->width() - newWidgetWidth, mpContainer->height());
+        }
+    }
+}
+
+void UBWidgetList::resizeEvent(QResizeEvent *ev)
+{
+    if(ev->oldSize().width() >= 0 && ev->oldSize().height() >= 0){
+        float scale;
+        if(eWidgetListOrientation_Vertical == mOrientation){
+            scale = (float)ev->size().width() / (float)ev->oldSize().width();
+            updateAllWidgetsize(scale);
+            mpContainer->resize(width() - 2, mpContainer->height()*scale);
+        }else{
+            scale = (float)ev->size().height() / (float)ev->oldSize().height();
+            updateAllWidgetsize(scale);
+            mpContainer->resize(mpContainer->width()*scale, height() - 2);
+        }
+    }
+}
+
+void UBWidgetList::updateAllWidgetsize(float scale)
+{
+    for(int i=0; i<mWidgets.size(); i++){
+        mWidgets.at(i)->resize(mWidgets.at(i)->width()*scale, mWidgets.at(i)->height()*scale);
+    }
+}
+
+void UBWidgetList::setMargin(int margin)
+{
+    mMargin = margin;
+}
+
+int UBWidgetList::margin()
+{
+    return mMargin;
+}
+
+// TODO :   - add onHover 'delete' button
+//          - add empty label
diff --git a/src/customWidgets/UBWidgetList.h b/src/customWidgets/UBWidgetList.h
new file mode 100644
index 00000000..171ece88
--- /dev/null
+++ b/src/customWidgets/UBWidgetList.h
@@ -0,0 +1,44 @@
+#ifndef UBWIDGETLIST_H
+#define UBWIDGETLIST_H
+
+#include <QWidget>
+#include <QScrollArea>
+#include <QLayout>
+#include <QVBoxLayout>
+#include <QHBoxLayout>
+#include <QResizeEvent>
+#include <QVector>
+#include <QLabel>
+
+typedef enum{
+    eWidgetListOrientation_Vertical,
+    eWidgetListOrientation_Horizontal
+}eWidgetListOrientation;
+
+class UBWidgetList : public QScrollArea
+{
+    Q_OBJECT
+
+public:
+    UBWidgetList(QWidget* parent=0, eWidgetListOrientation orientation = eWidgetListOrientation_Vertical, const char* name = "UBWidgetList");
+    ~UBWidgetList();
+    void addWidget(QWidget* widget);
+    void removeWidget(QWidget* widget);
+    void setMargin(int margin);
+    int margin();
+
+protected:
+    void resizeEvent(QResizeEvent* ev);
+
+private:
+    void updateSize(bool widgetAdded, QWidget* widget);
+    void updateAllWidgetsize(float scale);
+    QLayout* mpLayout;
+    QWidget* mpContainer;
+    eWidgetListOrientation mOrientation;
+    int mMargin;
+    QVector<QWidget*> mWidgets;
+    QLabel* mpEmptyLabel;
+};
+
+#endif // UBWIDGETLIST_H
diff --git a/src/customWidgets/customWidgets.pri b/src/customWidgets/customWidgets.pri
new file mode 100644
index 00000000..a5609d31
--- /dev/null
+++ b/src/customWidgets/customWidgets.pri
@@ -0,0 +1,5 @@
+
+HEADERS      += src/customWidgets/UBWidgetList.h
+                
+SOURCES      += src/customWidgets/UBWidgetList.cpp
+