class QPrintPreviewWidget¶

The QPrintPreviewWidget class provides a widget for previewing page layouts for printer output. More…

Synopsis¶

Methods¶

def __init__()
def currentPage()
def orientation()
def pageCount()
def viewMode()
def zoomFactor()
def zoomMode()

Slots¶

def fitInView()
def fitToWidth()
def print_()
def setAllPagesViewMode()
def setCurrentPage()
def setFacingPagesViewMode()
def setLandscapeOrientation()
def setOrientation()
def setPortraitOrientation()
def setSinglePageViewMode()
def setViewMode()
def setZoomFactor()
def setZoomMode()
def updatePreview()
def zoomIn()
def zoomOut()

Note

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Detailed Description¶

QPrintPreviewDialog uses a QPrintPreviewWidget internally, and the purpose of QPrintPreviewWidget is to make it possible to embed the preview into other widgets. It also makes it possible to build a different user interface around it than the default one provided with QPrintPreviewDialog .

Using QPrintPreviewWidget is straightforward:

Create the QPrintPreviewWidget

Construct the QPrintPreviewWidget either by passing in an existing QPrinter object, or have QPrintPreviewWidget create a default constructed QPrinter object for you.

Connect the paintRequested() signal to a slot.

When the widget needs to generate a set of preview pages, a paintRequested() signal will be emitted from the widget. Connect a slot to this signal, and draw onto the QPrinter passed in as a signal parameter. Call newPage() , to start a new page in the preview.

See also

QPrinter QPrintDialog QPageSetupDialog QPrintPreviewDialog

class ViewMode¶

This enum is used to describe the view mode of the preview widget.

Constant

Description

QPrintPreviewWidget.SinglePageView

A mode where single pages in the preview is viewed.

QPrintPreviewWidget.FacingPagesView

A mode where the facing pages in the preview is viewed.

QPrintPreviewWidget.AllPagesView

A view mode where all the pages in the preview is viewed.

Constant	Description
QPrintPreviewWidget.SinglePageView	A mode where single pages in the preview is viewed.
QPrintPreviewWidget.FacingPagesView	A mode where the facing pages in the preview is viewed.
QPrintPreviewWidget.AllPagesView	A view mode where all the pages in the preview is viewed.

class ZoomMode¶

This enum is used to describe zoom mode of the preview widget.

Constant

Description

QPrintPreviewWidget.CustomZoom

The zoom is set to a custom zoom value.

QPrintPreviewWidget.FitToWidth

This mode fits the current page to the width of the view.

QPrintPreviewWidget.FitInView

This mode fits the current page inside the view.

Constant	Description
QPrintPreviewWidget.CustomZoom	The zoom is set to a custom zoom value.
QPrintPreviewWidget.FitToWidth	This mode fits the current page to the width of the view.
QPrintPreviewWidget.FitInView	This mode fits the current page inside the view.

__init__([parent=None[, flags=Qt.WindowFlags()]])¶

Parameters:

parent – QWidget
flags – Combination of WindowType

This is an overloaded function.

This will cause QPrintPreviewWidget to create an internal, default constructed QPrinter object, which will be used to generate the preview.

__init__(printer[, parent=None[, flags=Qt.WindowFlags()]])

Parameters:

printer – QPrinter
parent – QWidget
flags – Combination of WindowType

Constructs a QPrintPreviewWidget based on printer and with parent as the parent widget. The widget flags flags are passed on to the QWidget constructor.

See also

setWindowFlags()

currentPage()¶

Return type:: int

Returns the currently viewed page in the preview.

See also

setCurrentPage()

fitInView()¶

This is a convenience function and is the same as calling setZoomMode(QPrintPreviewWidget::FitInView).

fitToWidth()¶

This is a convenience function and is the same as calling setZoomMode(QPrintPreviewWidget::FitToWidth).

orientation()¶

Return type:: Orientation

Returns the current orientation of the preview. This value is obtained from the QPrinter object associated with the preview.

See also

setOrientation()

pageCount()¶

Return type:: int

Returns the number of pages in the preview.

paintRequested(printer)¶

Parameters:: printer – QPrinter

This signal is emitted when the preview widget needs to generate a set of preview pages. printer is the printer associated with this preview widget.

previewChanged()¶

This signal is emitted whenever the preview widget has changed some internal state, such as the orientation.

print_()¶

setAllPagesViewMode()¶

This is a convenience function and is the same as calling setViewMode(QPrintPreviewWidget::AllPagesView).

setCurrentPage(pageNumber)¶

Parameters:: pageNumber – int

Sets the current page in the preview. This will cause the view to skip to the beginning of page.

See also

currentPage()

setFacingPagesViewMode()¶

This is a convenience function and is the same as calling setViewMode(QPrintPreviewWidget::FacingPagesView).

setLandscapeOrientation()¶

This is a convenience function and is the same as calling setOrientation(QPageLayout::Landscape).

setOrientation(orientation)¶

Parameters:: orientation – Orientation

Sets the current orientation to orientation. This value will be set on the QPrinter object associated with the preview.

See also

orientation()

setPortraitOrientation()¶

This is a convenience function and is the same as calling setOrientation(QPageLayout::Portrait).

setSinglePageViewMode()¶

This is a convenience function and is the same as calling setViewMode(QPrintPreviewWidget::SinglePageView).

setViewMode(viewMode)¶

Parameters:: viewMode – ViewMode

Sets the view mode to mode. The default view mode is SinglePageView .

See also

viewMode()

setZoomFactor(zoomFactor)¶

Parameters:: zoomFactor – float

Sets the zoom factor of the view to factor. For example, a value of 1.0 indicates an unscaled view, which is approximately the size the view will have on paper. A value of 0.5 will halve the size of the view, while a value of 2.0 will double the size of the view.

See also

zoomFactor()

setZoomMode(zoomMode)¶

Parameters:: zoomMode – ZoomMode

Sets the zoom mode to zoomMode. The default zoom mode is FitInView .

See also

zoomMode() viewMode() setViewMode()

updatePreview()¶

This function updates the preview, which causes the paintRequested() signal to be emitted.

viewMode()¶

Return type:: ViewMode

Returns the current view mode. The default view mode is SinglePageView .

See also

setViewMode()

zoomFactor()¶

Return type:: float

Returns the zoom factor of the view.

See also

setZoomFactor()

zoomIn([zoom=1.1])¶

Parameters:: zoom – float

Zooms the current view in by factor. The default value for factor is 1.1, which means the view will be scaled up by 10%.

zoomMode()¶

Return type:: ZoomMode

Returns the current zoom mode.

See also

setZoomMode() viewMode() setViewMode()

zoomOut([zoom=1.1])¶

Parameters:: zoom – float

Zooms the current view out by factor. The default value for factor is 1.1, which means the view will be scaled down by 10%.