kicad/include/class_drawpanel.h

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2004 Jean-Pierre Charras, jaen-pierre.charras@gipsa-lab.inpg.com
* Copyright (C) 2011 Wayne Stambaugh <stambaughw@verizon.net>
* Copyright (C) 1992-2016 KiCad Developers, see AUTHORS.txt for contributors.
*
* 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 class_drawpanel.h:
* @brief EDA_DRAW_PANEL class definition.
*/
#ifndef PANEL_WXSTRUCT_H
#define PANEL_WXSTRUCT_H
#include <base_struct.h>
#include <gr_basic.h>
#include <class_eda_rect.h>
class BASE_SCREEN;
class PCB_SCREEN;
/**
* Mouse capture callback function prototype.
*/
typedef void ( *MOUSE_CAPTURE_CALLBACK )( EDA_DRAW_PANEL* aPanel, wxDC* aDC,
const wxPoint& aPosition, bool aErase );
/**
* End mouse capture callback function prototype.
*/
typedef void ( *END_MOUSE_CAPTURE_CALLBACK )( EDA_DRAW_PANEL* aPanel, wxDC* aDC );
class EDA_DRAW_PANEL : public wxScrolledWindow
{
private:
int m_currentCursor; ///< Current mouse cursor shape id.
int m_defaultCursor; ///< The default mouse cursor shape id.
bool m_showCrossHair; ///< Indicate if cross hair is to be shown.
int m_cursorLevel; ///< Index for cursor redraw in XOR mode.
int m_scrollIncrementX; ///< X axis scroll increment in pixels per unit.
int m_scrollIncrementY; ///< Y axis scroll increment in pixels per unit.
wxPoint m_CursorStartPos; ///< Used for testing the cursor movement.
wxPoint m_PanStartCenter; ///< Initial scroll center position when pan started
wxPoint m_PanStartEventPosition; ///< Initial position of mouse event when pan started
/// The drawing area used to redraw the screen which is usually the visible area
/// of the drawing in internal units.
EDA_RECT m_ClipBox;
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bool m_abortRequest; ///< Flag used to abort long commands.
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bool m_enableZoomNoCenter; ///< True to enable zooming around the crosshair instead of the center
bool m_enableMousewheelPan; ///< True to enable mousewheel panning by default.
bool m_enableAutoPan; ///< True to enable automatic panning.
bool m_requestAutoPan; ///< true to request an auto pan. Valid only when m_enableAutoPan = true.
bool m_ignoreMouseEvents; ///< Ignore mouse events when true.
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/* Used to inhibit a response to a mouse left button release, after a double click
* (when releasing the left button at the end of the second click. Used in Eeschema
* to inhibit a mouse left release command when switching between hierarchical sheets
* on a double click.
*/
bool m_ignoreNextLeftButtonRelease; ///< Ignore the next mouse left button release when true.
bool m_enableBlockCommands; ///< True enables block commands.
/**
* Count the drag events. Used to filter mouse moves before starting a
* block command. A block command can be started only if
* MinDragEventCount > MIN_DRAG_COUNT_FOR_START_BLOCK_COMMAND in order to avoid
* spurious block commands.
*/
int m_minDragEventCount;
/// True when drawing in mirror mode. Used by the draw arc function, because arcs
/// are oriented, and in mirror mode, orientations are reversed.
bool m_PrintIsMirrored;
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/// Mouse capture move callback function.
MOUSE_CAPTURE_CALLBACK m_mouseCaptureCallback;
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/// Abort mouse capture callback function.
END_MOUSE_CAPTURE_CALLBACK m_endMouseCaptureCallback;
/// useful to avoid false start block in certain cases
/// (like switch from a sheet to an other sheet
/// >= 0 (or >= n) if a block can start
int m_canStartBlock;
public:
EDA_DRAW_PANEL( EDA_DRAW_FRAME* parent, int id, const wxPoint& pos, const wxSize& size );
~EDA_DRAW_PANEL();
/**
* Function GetDisplayOptions
* A way to pass info to draw functions.
* this is just an accessor to the GetDisplayOptions() parent frame function.
*/
void* GetDisplayOptions();
BASE_SCREEN* GetScreen();
EDA_DRAW_FRAME* GetParent() const;
void OnPaint( wxPaintEvent& event );
EDA_RECT* GetClipBox() { return &m_ClipBox; }
void SetClipBox( const EDA_RECT& aRect ) { m_ClipBox = aRect; }
bool GetAbortRequest() const { return m_abortRequest; }
void SetAbortRequest( bool aAbortRequest ) { m_abortRequest = aAbortRequest; }
bool GetEnableMousewheelPan() const { return m_enableMousewheelPan; }
void SetEnableMousewheelPan( bool aEnable );
bool GetEnableZoomNoCenter() const { return m_enableZoomNoCenter; }
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void SetEnableZoomNoCenter( bool aEnable );
bool GetEnableAutoPan() const { return m_enableAutoPan; }
void SetEnableAutoPan( bool aEnable ) { m_enableAutoPan = aEnable; }
void SetAutoPanRequest( bool aEnable ) { m_requestAutoPan = aEnable; }
void SetIgnoreMouseEvents( bool aIgnore ) { m_ignoreMouseEvents = aIgnore; }
void SetIgnoreLeftButtonReleaseEvent( bool aIgnore ) { m_ignoreNextLeftButtonRelease = aIgnore; }
void SetEnableBlockCommands( bool aEnable ) { m_enableBlockCommands = aEnable; }
bool GetPrintMirrored() const { return m_PrintIsMirrored; }
void SetPrintMirrored( bool aMirror ) { m_PrintIsMirrored = aMirror; }
void SetCanStartBlock( int aStartBlock ) { m_canStartBlock = aStartBlock; }
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/**
* Function DrawBackGround
* @param DC = current Device Context
* Draws (if allowed) :
* the grid
* X and Y axis
* X and Y auxiliary axis
*/
void DrawBackGround( wxDC* DC );
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/**
* Function DrawGrid
* draws a grid to \a aDC.
* @see m_ClipBox to determine the damaged area of the drawing to draw the grid.
* @see EDA_DRAW_FRAME::IsGridVisible() to determine if grid is shown.
* @see EDA_DRAW_FRAME::GetGridColor() for the color of the grid.
* @param aDC The device context to draw the grid.
*/
void DrawGrid( wxDC* aDC );
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/**
* Function DrawAuxiliaryAxis
* Draw the Auxiliary Axis, used in Pcbnew which as origin coordinates
* for gerber and excellon files
* @param aDC = current Device Context
* @param aDrawMode = draw mode (GR_COPY, GR_OR ..)
*/
void DrawAuxiliaryAxis( wxDC* aDC, GR_DRAWMODE aDrawMode );
/**
* Function DrawGridAxis
* Draw on auxiliary axis, used in Pcbnew to show grid origin, when
* the grid origin is set by user, and is not (0,0)
* @param aDC = current Device Context
* @param aDrawMode = draw mode (GR_COPY, GR_OR ..)
* @param aGridOrigin = the absolute coordinate of grid origin for snap.
*/
void DrawGridAxis( wxDC* aDC, GR_DRAWMODE aDrawMode, const wxPoint& aGridOrigin );
void OnEraseBackground( wxEraseEvent& event ) { }
/**
* Function OnActivate
* handles window activation events.
* <p>
* The member m_canStartBlock is initialize to avoid a block start command on activation
* (because a left mouse button can be pressed and no block command wanted. This happens
* when enter on a hierarchy sheet on double click.
*</p>
*/
void OnActivate( wxActivateEvent& event );
/**
* Function DoPrepareDC
* sets up the device context \a aDC for drawing.
* <p>
* This overrides wxScrolledWindow::DoPrepareDC() for setting up the the device context
* used for drawing. The scale factor and drawing logical offset are set and the base
* method is called to set the DC device origin (scroll bar position). This connects
* everything together to achieve the appropriate coordinate manipulation using wxDC
* LogicalToDeviceXXX and DeviceToLogixalXXX methods. This gets called automatically
* for a paint event. If you do any drawing outside the paint event, you must call
* DoPrepareDC manually.
* </p>
* @param aDC The device context to prepare.
*/
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virtual void DoPrepareDC( wxDC& aDC ) override;
/**
* Function DeviceToLogical
* converts \a aRect from device to drawing (logical) coordinates.
* <p>
* \a aRect must be in scrolled device units.
* </p>
* @param aRect The rectangle to convert.
* @param aDC The device context used for the conversion.
* @return A rectangle converted to drawing units.
*/
wxRect DeviceToLogical( const wxRect& aRect, wxDC& aDC );
/* Mouse and keys events */
/**
* Function OnMouseWheel
* handles mouse wheel events.
* <p>
* The mouse wheel is used to provide support for zooming and panning. This
* is accomplished by converting mouse wheel events in pseudo menu command
* events and sending them to the appropriate parent window event handler.
*</p>
*/
void OnMouseWheel( wxMouseEvent& event );
#if wxCHECK_VERSION( 3, 1, 0 ) || defined( USE_OSX_MAGNIFY_EVENT )
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void OnMagnify( wxMouseEvent& event );
#endif
void OnMouseEvent( wxMouseEvent& event );
void OnMouseEntering( wxMouseEvent& aEvent );
void OnMouseLeaving( wxMouseEvent& event );
void OnKeyEvent( wxKeyEvent& event );
void OnCharHook( wxKeyEvent& event );
void OnPan( wxCommandEvent& event );
void EraseScreen( wxDC* DC );
void OnScrollWin( wxCommandEvent& event );
void OnScroll( wxScrollWinEvent& event );
void SetZoom( double mode );
double GetZoom();
void SetGrid( const wxRealPoint& size );
wxRealPoint GetGrid();
/**
* Function OnRightClick
* builds and displays a context menu on a right mouse button click.
* @return true if the context menu is shown, or false
*/
bool OnRightClick( wxMouseEvent& event );
/**
* Function IsPointOnDisplay
* @param aPosition The position to test in logical (drawing) units.
* @return true if \a aPosition is visible on the screen.
* false if \a aPosition is not visible on the screen.
*/
bool IsPointOnDisplay( const wxPoint& aPosition );
/**
* Function SetClipBox
* sets the clip box in drawing (logical) units from \a aRect in device units.
* <p>
* If \a aRect is NULL, then the entire visible area of the screen is used as the clip
* area. The clip box is used when drawing to determine which objects are not visible
* and do not need to be drawn. Note that this is not the same as setting the device
* context clipping with wxDC::SetClippingRegion(). This is the rectangle used by the
* drawing functions in gr_basic.cpp used to determine if the item to draw is off screen
* and therefore not drawn.
* </p>
* @param aDC The device context use for drawing with the correct scale and
* offsets already configured. See DoPrepareDC().
* @param aRect The clip rectangle in device units or NULL for the entire visible area
* of the screen.
*/
void SetClipBox( wxDC& aDC, const wxRect* aRect = NULL );
void ReDraw( wxDC* aDC, bool aEraseBackground = true );
/**
* Function RefreshDrawingRect
* redraws the contents of \a aRect in drawing units. \a aRect is converted to
* screen coordinates and wxWindow::RefreshRect() is called to repaint the region.
* @param aRect The rectangle to repaint.
* @param aEraseBackground Erases the background if true.
*/
void RefreshDrawingRect( const EDA_RECT& aRect, bool aEraseBackground = true );
/// @copydoc wxWindow::Refresh()
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virtual void Refresh( bool eraseBackground = true, const wxRect* rect = NULL ) override;
/**
* Function GetScreenCenterLogicalPosition
* @return The current screen center position in logical (drawing) units.
*/
wxPoint GetScreenCenterLogicalPosition();
/**
* Function MoveCursorToCrossHair
* warps the cursor to the current cross hair position.
*/
void MoveCursorToCrossHair();
/**
* Function ToDeviceXY
* transforms logical to device coordinates
*/
wxPoint ToDeviceXY( const wxPoint& pos );
/**
* Function ToLogicalXY
* transforms device to logical coordinates
*/
wxPoint ToLogicalXY( const wxPoint& pos );
/**
* Function MoveCursor
* moves the mouse pointer to \a aPosition in logical (drawing) units.
* @param aPosition The position in logical units to move the cursor.
*/
void MoveCursor( const wxPoint& aPosition );
/* Cursor functions */
/**
* Function DrawCrossHair
* draws the user cross hair.
* <p>
* The user cross hair is not the mouse cursor although they may be at the same screen
* position. The mouse cursor is still render by the OS. This is a drawn cross hair
* that is used to snap to grid when grid snapping is enabled. This is as an indicator
* to where the next user action will take place.
* </p>
* @param aDC - the device context to draw the cursor
* @param aColor - the color to draw the cursor
*/
void DrawCrossHair( wxDC* aDC, COLOR4D aColor = COLOR4D::WHITE );
// Hide the cross hair.
void CrossHairOff( wxDC* DC );
// Show the cross hair.
void CrossHairOn( wxDC* DC );
/**
* Function SetMouseCapture
* sets the mouse capture and end mouse capture callbacks to \a aMouseCaptureCallback
* and \a aEndMouseCaptureCallback respectively.
*/
void SetMouseCapture( MOUSE_CAPTURE_CALLBACK aMouseCaptureCallback,
END_MOUSE_CAPTURE_CALLBACK aEndMouseCaptureCallback )
{
m_mouseCaptureCallback = aMouseCaptureCallback;
m_endMouseCaptureCallback = aEndMouseCaptureCallback;
}
void SetMouseCaptureCallback( MOUSE_CAPTURE_CALLBACK aMouseCaptureCallback )
{
m_mouseCaptureCallback = aMouseCaptureCallback;
}
/**
* Function EndMouseCapture
* ends mouse a capture.
*
* Check to see if the cursor is being managed for block or editing commands and release it.
* @param aId The command ID to restore or -1 to keep the current command ID.
* @param aCursorId The wxWidgets stock cursor ID to set the cursor to or -1 to keep the
* current cursor.
* @param aTitle The tool message to display in the status bar or wxEmptyString to clear
* the message.
* @param aCallEndFunc Call the abort mouse capture callback if true.
*/
void EndMouseCapture( int aId = -1, int aCursorId = -1,
const wxString& aTitle = wxEmptyString,
bool aCallEndFunc = true );
inline bool IsMouseCaptured() const { return m_mouseCaptureCallback != NULL; }
/**
* Function CallMouseCapture
* calls the mouse capture callback.
*
* @param aDC A point to a wxDC object to perform any drawing upon.
* @param aPosition A referecnce to a wxPoint object containing the current cursor
* position.
* @param aErase True indicates the item being drawn should be erase before drawing
* it a \a aPosition.
*/
void CallMouseCapture( wxDC* aDC, const wxPoint& aPosition, bool aErase );
/**
* Function CallEndMouseCapture
* calls the end mouse capture callback.
*
* @param aDC A point to a wxDC object to perform any drawing upon.
*/
void CallEndMouseCapture( wxDC* aDC );
/**
* Function SetCurrentCursor
* Set the current cursor shape for drawpanel
*/
void SetCurrentCursor( int aCursor )
{
m_currentCursor = aCursor;
SetCursor( (wxStockCursor) m_currentCursor );
}
/**
* Function GetDefaultCursor
* return the default cursor shape
*/
int GetDefaultCursor() const { return m_defaultCursor; }
/**
* Function GetCurrentCursor
* return the current cursor shape, depending on the current selected tool
*/
int GetCurrentCursor() const { return m_currentCursor; }
DECLARE_EVENT_TABLE()
};
/**
* Class EDA_CROSS_HAIR_MANAGER
* is used to hide the cross hair and restore it when the class goes out of scope.
*/
class EDA_CROSS_HAIR_MANAGER
{
public:
EDA_CROSS_HAIR_MANAGER( EDA_DRAW_PANEL* aPanel, wxDC* aDC ) :
m_panel( aPanel ),
m_dc( aDC )
{
if( aPanel && aDC )
aPanel->CrossHairOff( aDC );
}
~EDA_CROSS_HAIR_MANAGER()
{
if( m_panel && m_dc )
m_panel->CrossHairOn( m_dc );
}
private:
EDA_DRAW_PANEL* m_panel;
wxDC* m_dc;
DECLARE_NO_COPY_CLASS( EDA_CROSS_HAIR_MANAGER )
};
#endif /* #ifndef PANEL_WXSTRUCT_H */