wxWidgets: wxPreviewCanvas Class Reference

| Version: 3.0.2

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Public Member Functions | List of all members
wxPreviewCanvas Class Reference
Printing Framework

`#include <wx/print.h>`

Inheritance diagram for wxPreviewCanvas:
[legend]

## Detailed Description

A preview canvas is the default canvas used by the print preview system to display the preview.

##

Library: wxCore
Category: Printing Framework

See Also
  wxPreviewFrame, wxPreviewControlBar, wxPrintPreview

## Public Member Functions
| wxPreviewCanvas (wxPrintPreview *preview, wxWindow *parent, const wxPoint &pos=wxDefaultPosition, const wxSize &size=wxDefaultSize, long style=0, const wxString &name="canvas")
| Constructor.
virtual | ~wxPreviewCanvas ()
| Destructor.
void | OnPaint (wxPaintEvent &event)
| Calls wxPrintPreview::PaintPage() to refresh the canvas.
Public Member Functions inherited from wxScrolled< T >
| wxScrolled ()
| Default constructor.
| wxScrolled (wxWindow *parent, wxWindowID id=-1, const wxPoint &pos=wxDefaultPosition, const wxSize &size=wxDefaultSize, long style=wxHSCROLL|wxVSCROLL, const wxString &name="scrolledWindow")
| Constructor.
void | CalcScrolledPosition (int x, int y, int *xx, int *yy) const
| Translates the logical coordinates to the device ones.
wxPoint | CalcScrolledPosition (const wxPoint &pt) const
void | CalcUnscrolledPosition (int x, int y, int *xx, int *yy) const
| Translates the device coordinates to the logical ones.
wxPoint | CalcUnscrolledPosition (const wxPoint &pt) const
bool | Create (wxWindow *parent, wxWindowID id=-1, const wxPoint &pos=wxDefaultPosition, const wxSize &size=wxDefaultSize, long style=wxHSCROLL|wxVSCROLL, const wxString &name="scrolledWindow")
| Creates the window for two-step construction.
void | DisableKeyboardScrolling ()
| Disable use of keyboard keys for scrolling.
void | DoPrepareDC (wxDC &dc)
| Call this function to prepare the device context for drawing a scrolled image.
void | EnableScrolling (bool xScrolling, bool yScrolling)
| Enable or disable use of wxWindow::ScrollWindow() for scrolling.
void | ShowScrollbars (wxScrollbarVisibility horz, wxScrollbarVisibility vert)
| Set the scrollbar visibility.
void | GetScrollPixelsPerUnit (int *xUnit, int *yUnit) const
| Get the number of pixels per scroll unit (line), in each direction, as set by SetScrollbars().
void | GetViewStart (int *x, int *y) const
| Get the position at which the visible portion of the window starts.
wxPoint | GetViewStart () const
| This is a simple overload of GetViewStart(int*,int*); see that function for more info.
void | GetVirtualSize (int *x, int *y) const
| Gets the size in device units of the scrollable window area (as opposed to the client size, which is the area of the window currently visible).
bool | IsRetained () const
| Motif only: true if the window has a backing bitmap.
virtual void | OnDraw (wxDC &dc)
| Called by the default paint event handler to allow the application to define painting behaviour without having to worry about calling DoPrepareDC().
void | PrepareDC (wxDC &dc)
| This function is for backwards compatibility only and simply calls DoPrepareDC() now.
void | Scroll (int x, int y)
| Scrolls a window so the view start is at the given point.
void | Scroll (const wxPoint &pt)
| This is an overload of Scroll(int,int); see that function for more info.
void | SetScrollRate (int xstep, int ystep)
| Set the horizontal and vertical scrolling increment only.
void | SetScrollbars (int pixelsPerUnitX, int pixelsPerUnitY, int noUnitsX, int noUnitsY, int xPos=0, int yPos=0, bool noRefresh=false)
| Sets up vertical and/or horizontal scrollbars.
void | SetTargetWindow (wxWindow *window)
| Call this function to tell wxScrolled to perform the actual scrolling on a different window (and not on itself).
wxWindow * | GetTargetWindow () const
void | SetTargetRect (const wxRect &rect)
wxRect | GetTargetRect () const
int | GetScrollPageSize (int orient) const
void | SetScrollPageSize (int orient, int pageSize)
int | GetScrollLines (int orient) const
void | SetScale (double xs, double ys)
double | GetScaleX () const
double | GetScaleY () const
virtual void | AdjustScrollbars ()
bool | IsAutoScrolling () const
| Are we generating the autoscroll events?
void | StopAutoScrolling ()
| Stop generating the scroll events when mouse is held outside the window.
virtual bool | SendAutoScrollEvents (wxScrollWinEvent &event) const
| This method can be overridden in a derived class to forbid sending the auto scroll events - note that unlike StopAutoScrolling() it doesn't stop the timer, so it will be called repeatedly and will typically return different values depending on the current mouse position.

## Additional Inherited Members
Protected Member Functions inherited from wxScrolled< T >
virtual wxSize | GetSizeAvailableForScrollTarget (const wxSize &size)
| Function which must be overridden to implement the size available for the scroll target for the given size of the main window.

## Constructor & Destructor Documentation

wxPreviewCanvas::wxPreviewCanvas | ( | wxPrintPreview * | preview,
|  | wxWindow * | parent,
|  | const wxPoint & | pos = `wxDefaultPosition`,
|  | const wxSize & | size = `wxDefaultSize`,
|  | long | style = `0`,
|  | const wxString & | name = `"canvas"`
| ) |  |

Constructor.

virtual wxPreviewCanvas::~wxPreviewCanvas | ( |  | ) |
| virtual

Destructor.

## Member Function Documentation

void wxPreviewCanvas::OnPaint | ( | wxPaintEvent & | event | ) |

Calls wxPrintPreview::PaintPage() to refresh the canvas.