[Add] File display widget.

[Remove] Removed pdf_file* for the time being.

bin/hpdf.pro

@@ -7,17 +7,19 @@ INCLUDEPATH   += /usr/include/poppler/qt5
 LIBS          += -L/usr/lib -lpoppler-qt5
 
 HEADERS += \
+  ../src/file_widget.h \
   ../src/pdf_factory.h \
-  ../src/pdf_file.h \
   ../src/pdf_page_widget.h \
-  ../src/table_view.h
+  ../src/table_view.h \
+  ../src/file_frame_widget.h
 
 SOURCES += \
   ../src/main.cpp \
+  ../src/file_widget.cpp \
   ../src/pdf_factory.cpp \
-  ../src/pdf_file.cpp \
   ../src/pdf_page_widget.cpp \
-  ../src/table_view.cpp
+  ../src/table_view.cpp \
+  ../src/file_frame_widget.cpp
 
 RESOURCES += hpdf.qrc
 

src/file_frame_widget.cpp

@@ -0,0 +1,60 @@
+#include <QDebug>
+#include <QSizePolicy>
+#include "file_frame_widget.h"
+
+#define COLLAPSE_BUTTON_WIDTH   60
+#define COLLAPSE_BUTTON_HEIGHT  40
+
+FileFrameWidget::FileFrameWidget(QWidget* parent) {
+  setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
+
+  topLayout   = new QGridLayout();
+
+  scrollArea  = new QScrollArea();
+  mainChild   = new FileWidget();
+
+  widgetName  = new QLabel();
+  widgetName->setText(tr("File 1"));
+  topLayout->addWidget(widgetName, 0, 1);
+
+  collapseButton = new QPushButton(tr("X"));
+  collapseButton->setMinimumSize(QSize(COLLAPSE_BUTTON_WIDTH, COLLAPSE_BUTTON_HEIGHT));
+  collapseButton->setMaximumSize(QSize(COLLAPSE_BUTTON_WIDTH, COLLAPSE_BUTTON_HEIGHT));
+  connect(collapseButton, SIGNAL(released()), this, SLOT(collapsedButtonClick()));
+  topLayout->addWidget(collapseButton, 0, 0);
+
+  topLayout->addWidget(scrollArea, 1, 0, 1, 5);
+  scrollArea->setWidget(mainChild);
+
+  setLayout(topLayout);
+
+  setCollapsed(false);
+  adjustSize();
+}
+
+QSize FileFrameWidget::sizeHint() const {
+  if(collapsed == true)
+    return QSize(mainChild->width(), collapseButton->height());
+  else
+    return QSize(mainChild->width(), collapseButton->height() + mainChild->height() + 50);
+}
+
+void FileFrameWidget::setCollapsed(bool state) {
+  if(state == true) {
+    collapsed = true;
+    scrollArea->hide();
+  } else {
+    collapsed = false;
+    scrollArea->show();
+  }
+
+  adjustSize();
+}
+
+void FileFrameWidget::collapsedButtonClick(void) {
+  if(collapsed == true)
+    setCollapsed(false);
+  else
+    setCollapsed(true);
+}
+

src/file_frame_widget.h

@@ -0,0 +1,34 @@
+#include <QWidget>
+#include <QScrollArea>
+#include <QHBoxLayout>
+#include <QLabel>
+#include <QPushButton>
+#include <QGridLayout>
+
+#include "file_widget.h"
+
+class FileFrameWidget : public QWidget {
+  Q_OBJECT
+  Q_PROPERTY(bool collapsed READ isCollapsed WRITE setCollapsed)
+public:
+  FileFrameWidget(QWidget* parent = 0);
+  QSize sizeHint(void) const;
+  
+  bool isCollapsed() { return collapsed; }
+  void setCollapsed(bool collapsed);
+
+protected:
+  
+private slots:
+  void collapsedButtonClick(void);
+private:
+  QGridLayout* topLayout;
+
+  QLabel*       widgetName;
+  QPushButton*  collapseButton;
+  QScrollArea*  scrollArea;
+  FileWidget*   mainChild;
+
+  bool          collapsed;
+};
+

src/file_widget.cpp

@@ -0,0 +1,93 @@
+#include <QPixmap>
+#include <QLabel>
+#include <QSize>
+#include <QDrag>
+#include <QDragEnterEvent>
+#include <QMouseEvent>
+#include <QDropEvent>
+#include <QMimeData>
+#include <QDebug>
+
+#include "file_widget.h"
+
+#define CHILD_AREA_WIDTH  150
+#define CHILD_AREA_HEIGHT 180
+
+FileWidget::FileWidget(QWidget* parent) {
+  setAcceptDrops(true);
+  mainLayout = new QHBoxLayout();
+
+  for(int i = 0; i < 4; i++) {
+    addChild(tr("Child number #") + QString::number(i));
+  }
+
+  setLayout(mainLayout);
+}
+
+int FileWidget::getChildCount() const {
+  return child.size();
+}
+
+QSize FileWidget::sizeHint() const {
+  return QSize(CHILD_AREA_WIDTH*getChildCount(), CHILD_AREA_HEIGHT + 50);
+}
+
+void FileWidget::addChild(QString name) {
+  QLabel* newchild;
+  newchild = new QLabel();
+  newchild->setText(name);
+  newchild->setStyleSheet("QLabel { background-color : red; color : blue; }");
+
+  child.push_back(newchild);
+
+  mainLayout->addWidget(newchild);
+}
+
+void FileWidget::dragEnterEvent(QDragEnterEvent* event) {
+  if(event->mimeData()->hasFormat("text/plain"))
+    event->acceptProposedAction();
+}
+
+void FileWidget::dropEvent(QDropEvent* event) {
+  int from  = event->mimeData()->text().toInt();
+  int to    = findChildPositionInLayout(child[findClickEventChild(event->pos())]);
+
+  qDebug() << QString::number(from) + " " + QString::number(to);
+
+  mainLayout->removeWidget(child[from]);
+  mainLayout->insertWidget(to, child[from]);
+  
+  event->acceptProposedAction();
+}
+
+void FileWidget::mousePressEvent(QMouseEvent* event) {
+  if(event->button() == Qt::LeftButton) {
+    int draggedChild = (findClickEventChild(event->pos()));
+
+    QDrag* drag = new QDrag(this);
+    QMimeData* mimeData = new QMimeData;
+
+    mimeData->setText(QString::number(draggedChild));
+    drag->setMimeData(mimeData);
+    drag->setPixmap(QPixmap(":/img/copy.png"));
+
+    Qt::DropAction dropAction = drag->exec();
+  }
+}
+
+int FileWidget::findClickEventChild(QPoint pos) {
+  for(int i = 0; i < getChildCount(); i++)
+    if(child[i]->geometry().contains(pos))
+      return i;
+  
+  return getChildCount()-1;
+}
+
+int FileWidget::findChildPositionInLayout(QLabel* child) {
+  for(int i = 0; i < getChildCount(); i++)
+    if(mainLayout->itemAt(i)->widget() == child)
+      return i;
+
+  return getChildCount()-1;
+}
+

src/file_widget.h

@@ -0,0 +1,28 @@
+#include <QWidget>
+#include <QHBoxLayout>
+#include <QImage>
+#include <QString>
+#include <QLabel>
+#include <QPoint>
+#include <vector>
+
+class FileWidget : public QWidget {
+  Q_OBJECT
+public:
+  FileWidget(QWidget* parent = 0);
+  QSize sizeHint() const;
+protected:
+  void dragEnterEvent(QDragEnterEvent* event);
+  void dropEvent(QDropEvent* event);
+  void mousePressEvent(QMouseEvent* event);
+private:
+  std::vector<QLabel*> child;
+  
+  QHBoxLayout* mainLayout;
+
+  void addChild(QString name);
+  int  findClickEventChild(QPoint pos);
+  int  findChildPositionInLayout(QLabel* child);
+  int  getChildCount() const;
+};
+

src/table_view.cpp

@@ -3,8 +3,9 @@
 #include <assert.h>
 #include "table_view.h"
 #include "pdf_page_widget.h"
+#include "file_frame_widget.h"
 
-PDFPageWidget* test[10];
+FileFrameWidget*  test[10];
 
 TableView::TableView(QWidget* parent) : QWidget(parent) {
   outerLayout = new QVBoxLayout();
@@ -23,10 +24,17 @@ TableView::TableView(QWidget* parent) : QWidget(parent) {
    * To remove pagewidget and add filewidgets later,
    * use QVector<PDFFile> files to store files.
    */
-  for(i = 0; i < 10; i++) {
+  /*for(i = 0; i < 10; i++) {
     test[i] = new PDFPageWidget();
     test[i]->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);
     
+    layout->addWidget(test[i]);
+  }*/
+
+  for(i = 0; i < 10; i++) {
+    test[i] = new FileFrameWidget();
+    /*test[i]->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Ignored);*/
+
     layout->addWidget(test[i]);
   }
   /* End TODO. */