1 files changed, 87 insertions, 0 deletions
diff --git a/ui/triple_splitter.h b/ui/triple_splitter.h
new file mode 100644
index 00000000..e95671c7
--- /dev/null
+++ b/ui/triple_splitter.h
@@ -0,0 +1,87 @@
+// **************************************************************************
+// * This file is part of the FreeFileSync project. It is distributed under *
+// * GNU General Public License: http://www.gnu.org/licenses/gpl.html       *
+// * Copyright (C) ZenJu (zhnmju123 AT gmx DOT de) - All Rights Reserved    *
+// **************************************************************************
+
+#ifndef TRIPPLE_SPLIT_HEADER_8257804292846842573942534254
+#define TRIPPLE_SPLIT_HEADER_8257804292846842573942534254
+
+#include <cassert>
+#include <memory>
+#include <wx/window.h>
+#include <wx/dcclient.h>
+
+//a not-so-crappy splitter window
+
+/* manage three contained windows:
+	1. left and right window are stretched
+	2. middle window is fixed size
+	3. middle window position can be changed via mouse with two sash lines
+	-----------------
+	|      | |      |
+	|      | |      |
+	|      | |      |
+	-----------------
+*/
+
+namespace zen
+{
+class TripleSplitter : public wxWindow
+{
+public:
+    TripleSplitter(wxWindow* parent,
+                   wxWindowID id      = wxID_ANY,
+                   const wxPoint& pos = wxDefaultPosition,
+                   const wxSize& size = wxDefaultSize,
+                   long style = 0);
+
+    void setupWindows(wxWindow* winL, wxWindow* winC, wxWindow* winR)
+    {
+        assert(winL->GetParent() == this && winC->GetParent() == this && winR->GetParent() == this && !GetSizer());
+        windowL = winL;
+        windowC = winC;
+        windowR = winR;
+        updateWindowSizes();
+    }
+
+    int getSashOffset() const { return centerOffset; }
+    void setSashOffset(int off) { centerOffset = off; updateWindowSizes(); }
+
+private:
+    void onEraseBackGround(wxEraseEvent& event) {}
+    void onSizeEvent(wxSizeEvent& event) { updateWindowSizes(); event.Skip(); }
+
+    void onPaintEvent(wxPaintEvent& event)
+    {
+        wxPaintDC dc(this);
+        drawSash(dc);
+    }
+
+    void updateWindowSizes();
+    int getCenterWidth() const;
+    int getCenterPosX() const; //return normalized posX
+    int getCenterPosXOptimal() const;
+
+    void drawSash(wxDC& dc);
+    bool hitOnSashLine(int posX) const;
+
+    void onMouseLeftDown(wxMouseEvent& event);
+    void onMouseLeftUp(wxMouseEvent& event);
+    void onMouseMovement(wxMouseEvent& event);
+    void onLeaveWindow(wxMouseEvent& event);
+    void onMouseCaptureLost(wxMouseCaptureLostEvent& event);
+    void onMouseLeftDouble(wxMouseEvent& event);
+
+    class SashMove;
+    std::unique_ptr<SashMove> activeMove;
+
+    int centerOffset; //offset to add after "gravity" stretching
+
+    wxWindow* windowL;
+    wxWindow* windowC;
+    wxWindow* windowR;
+};
+}
+
+#endif //TRIPPLE_SPLIT_HEADER_8257804292846842573942534254