begin work on qt gui - basic search & pdf preview

gui/mainwindow.h

@@ -0,0 +1,53 @@
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+#include <QThread>
+#include <QTreeWidgetItem>
+#include <QFileIconProvider>
+
+#include "searchworker.h"
+#include "pdfworker.h"
+namespace Ui
+{
+class MainWindow;
+}
+
+class MainWindow : public QMainWindow
+{
+	Q_OBJECT
+
+  public:
+	explicit MainWindow(QWidget *parent = 0);
+	~MainWindow();
+  signals:
+	void beginFileSearch(const QString &query);
+	void beginContentSearch(const QString &query);
+	void startPdfPreviewGeneration(QVector<SearchResult> paths, double scalefactor);
+
+  private:
+	Ui::MainWindow *ui;
+	QFileIconProvider iconProvider;
+	bool pdfDirty;
+	SearchWorker *searchWorker;
+	PdfWorker *pdfWorker;
+	void add(QString path, unsigned int page);
+	QThread searchThread;
+	QThread pdfWorkerThread;
+	QVector<SearchResult> pdfSearchResults;
+	void connectSignals();
+	void makePdfPreview();
+	bool pdfTabActive();
+  private slots:
+	void lineEditReturnPressed();
+	void lineEditTextChanged();
+	void handleSearchResults(const QVector<SearchResult> &results);
+	void handleCancelledSearch();
+	void treeSearchItemActivated(QTreeWidgetItem *item, int i);
+
+	void showSearchResultsContextMenu(const QPoint &point);
+	void tabChanged();
+	void pdfPreviewReceived(PdfPreview preview);
+};
+
+#endif // MAINWINDOW_H