Merge pull request #3 from saurabhb17/master

secondary files

1 files changed, 153 insertions, 0 deletions

diff --git a/include/view/wx_view_controls.h b/include/view/wx_view_controls.h
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+++ b/include/view/wx_view_controls.h
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+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Copyright (C) 2012 Torsten Hueter, torstenhtr <at> gmx.de
+ * Copyright (C) 2013 CERN
+ * @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, you may find one here:
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+ * or you may search the http://www.gnu.org website for the version 2 license,
+ * or you may write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+/**
+ * @file wx_view_controls.h
+ * @brief WX_VIEW_CONTROLS class definition.
+ */
+
+#ifndef __WX_VIEW_CONTROLS_H
+#define __WX_VIEW_CONTROLS_H
+
+#include <wx/wx.h>
+#include <wx/event.h>
+
+#include <view/view_controls.h>
+
+class EDA_DRAW_PANEL_GAL;
+
+namespace KIGFX
+{
+/**
+ * Class WX_VIEW_CONTROLS
+ * is a specific implementation of class VIEW_CONTROLS for wxWidgets library.
+ */
+class WX_VIEW_CONTROLS : public VIEW_CONTROLS, public wxEvtHandler
+{
+public:
+    WX_VIEW_CONTROLS( VIEW* aView, wxScrolledCanvas* aParentPanel );
+    ~WX_VIEW_CONTROLS()
+    {}
+
+    /// Handler functions
+    void onWheel( wxMouseEvent& aEvent );
+    void onMotion( wxMouseEvent& aEvent );
+#ifdef USE_OSX_MAGNIFY_EVENT
+    void onMagnify( wxMouseEvent& aEvent );
+#endif
+    void onButton( wxMouseEvent& aEvent );
+    void onEnter( wxMouseEvent& WXUNUSED( aEvent ) );
+    void onLeave( wxMouseEvent& WXUNUSED( aEvent ) );
+    void onTimer( wxTimerEvent& WXUNUSED( aEvent ) );
+    void onScroll( wxScrollWinEvent& aEvent );
+
+    /**
+     * Function SetGrabMouse()
+     * Enables/disables mouse cursor grabbing (limits the movement field only to the panel area).
+     *
+     * @param aEnabled says whether the option should be enabled or disabled.
+     */
+    void SetGrabMouse( bool aEnabled );
+
+    /**
+     * Function SetAutoPan()
+     * Enables/disables autopanning (panning when mouse cursor reaches the panel border).
+     *
+     * @param aEnabled says whether the option should enabled or disabled.
+     */
+    void SetAutoPan( bool aEnabled )
+    {
+        m_autoPanEnabled = aEnabled;
+
+        if( m_state == AUTO_PANNING )
+            m_state = IDLE;
+    }
+
+    /// @copydoc VIEW_CONTROLS::GetMousePosition()
+    VECTOR2I GetMousePosition() const;
+
+    /// @copydoc VIEW_CONTROLS::GetCursorPosition()
+    VECTOR2D GetCursorPosition() const;
+
+    /// @copydoc VIEW_CONTROLS::CursorWarp()
+    void WarpCursor( const VECTOR2D& aPosition, bool aWorldCoordinates = false,
+            bool aWarpView = false ) const;
+
+    /// @copydoc VIEW_CONTROLS::CenterOnCursor()
+    void CenterOnCursor() const;
+
+    /// Adjusts the scrollbars position to match the current viewport.
+    void UpdateScrollbars();
+
+    /// Event that forces mouse move event in the dispatcher (eg. used in autopanning, when mouse
+    /// cursor does not move in screen coordinates, but does in world coordinates)
+    static const wxEventType EVT_REFRESH_MOUSE;
+
+private:
+    /// Possible states for WX_VIEW_CONTROLS
+    enum STATE
+    {
+        IDLE = 1,           /// Nothing is happening
+        DRAG_PANNING,       /// Panning with mouse button pressed
+        AUTO_PANNING,       /// Panning on approaching borders of the frame
+    };
+
+    /**
+     * Function handleAutoPanning()
+     * Computes new viewport settings while in autopanning mode.
+     *
+     * @param aEvent is an event to be processed and decide if autopanning should happen.
+     * @return true if it is currently autopanning (ie. autopanning is active and mouse cursor
+     * is in the area that causes autopanning to happen).
+     */
+    bool handleAutoPanning( const wxMouseEvent& aEvent );
+
+    /// Current state of VIEW_CONTROLS
+    STATE       m_state;
+
+    /// Panel that is affected by VIEW_CONTROLS
+    wxScrolledCanvas* m_parentPanel;
+
+    /// Stores information about point where dragging has started
+    VECTOR2D    m_dragStartPoint;
+
+    /// Stores information about the center of viewport when dragging has started
+    VECTOR2D    m_lookStartPoint;
+
+    /// Current direction of panning (only autopanning mode)
+    VECTOR2D    m_panDirection;
+
+    /// Used for determining time intervals between scroll & zoom events
+    wxLongLong  m_timeStamp;
+
+    /// Timer repsonsible for handling autopanning
+    wxTimer     m_panTimer;
+
+    /// Ratio used for scaling world coordinates to scrollbar position.
+    VECTOR2D    m_scrollScale;
+};
+} // namespace KIGFX
+
+#endif