Qt 4.8
qpaintengine_preview_p.h
Go to the documentation of this file.
1 /****************************************************************************
2 **
3 ** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/legal
5 **
6 ** This file is part of the QtGui module of the Qt Toolkit.
7 **
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** Commercial License Usage
10 ** Licensees holding valid commercial Qt licenses may use this file in
11 ** accordance with the commercial license agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and Digia. For licensing terms and
14 ** conditions see http://qt.digia.com/licensing. For further information
15 ** use the contact form at http://qt.digia.com/contact-us.
16 **
17 ** GNU Lesser General Public License Usage
18 ** Alternatively, this file may be used under the terms of the GNU Lesser
19 ** General Public License version 2.1 as published by the Free Software
20 ** Foundation and appearing in the file LICENSE.LGPL included in the
21 ** packaging of this file. Please review the following information to
22 ** ensure the GNU Lesser General Public License version 2.1 requirements
23 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
24 **
25 ** In addition, as a special exception, Digia gives you certain additional
26 ** rights. These rights are described in the Digia Qt LGPL Exception
27 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
28 **
29 ** GNU General Public License Usage
30 ** Alternatively, this file may be used under the terms of the GNU
31 ** General Public License version 3.0 as published by the Free Software
32 ** Foundation and appearing in the file LICENSE.GPL included in the
33 ** packaging of this file. Please review the following information to
34 ** ensure the GNU General Public License version 3.0 requirements will be
35 ** met: http://www.gnu.org/copyleft/gpl.html.
36 **
37 **
38 ** $QT_END_LICENSE$
39 **
40 ****************************************************************************/
41 
42 #ifndef QPREVIEWPAINTENGINE_P_H
43 #define QPREVIEWPAINTENGINE_P_H
44 
45 //
46 // W A R N I N G
47 // -------------
48 //
49 // This file is not part of the Qt API. It exists for the convenience
50 // of QPreviewPrinter and friends. This header file may change from
51 // version to version without notice, or even be removed.
52 //
53 // We mean it.
54 //
55 //
56 
57 #include <QtGui/qpaintengine.h>
58 #include <QtGui/qprintengine.h>
59 
60 #ifndef QT_NO_PRINTPREVIEWWIDGET
61 
63 
65 
67 {
69 public:
72 
73  bool begin(QPaintDevice *dev);
74  bool end();
75 
76  void updateState(const QPaintEngineState &state);
77 
78  void drawPath(const QPainterPath &path);
79  void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode);
80  void drawTextItem(const QPointF &p, const QTextItem &textItem);
81 
82  void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr);
83  void drawTiledPixmap(const QRectF &r, const QPixmap &pm, const QPointF &p);
84 
86 
87  QPaintEngine::Type type() const { return Picture; }
88 
89  void setProxyEngines(QPrintEngine *printEngine, QPaintEngine *paintEngine);
90 
91  void setProperty(PrintEnginePropertyKey key, const QVariant &value);
93 
94  bool newPage();
95  bool abort();
96 
98 
100 };
101 
103 
104 #endif // QT_NO_PRINTPREVIEWWIDGET
105 
106 #endif
The QVariant class acts like a union for the most common Qt data types.
Definition: qvariant.h:92
QList< const QPicture * > pages()
bool abort()
Instructs the print engine to abort the printing process.
PrinterState
Definition: qprinter.h:119
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
The QPainterPath class provides a container for painting operations, enabling graphical shapes to be ...
Definition: qpainterpath.h:67
QPaintEngineState * state
Definition: qpaintengine.h:239
The QPointF class defines a point in the plane using floating point precision.
Definition: qpoint.h:214
void setProxyEngines(QPrintEngine *printEngine, QPaintEngine *paintEngine)
bool begin(QPaintDevice *dev)
Reimplement this function to initialise your paint engine when painting is to start on the paint devi...
void drawTiledPixmap(const QRectF &r, const QPixmap &pm, const QPointF &p)
Reimplement this function to draw the pixmap in the given rect, starting at the given p...
void drawPath(const QPainterPath &path)
The default implementation ignores the path and does nothing.
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
The QRectF class defines a rectangle in the plane using floating point precision. ...
Definition: qrect.h:511
void setProperty(PrintEnginePropertyKey key, const QVariant &value)
Sets the print engine&#39;s property specified by key to the given value.
void updateState(const QPaintEngineState &state)
Reimplement this function to update the state of a paint engine.
void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode)
Reimplement this virtual function to draw the polygon defined by the pointCount first points in point...
The QPrintEngine class defines an interface for how QPrinter interacts with a given printing subsyste...
Definition: qprintengine.h:56
bool newPage()
Instructs the print engine to start a new page.
QPrinter::PrinterState printerState() const
Returns the current state of the printer being used by the print engine.
The QPaintEngine class provides an abstract definition of how QPainter draws to a given device on a g...
Definition: qpaintengine.h:90
bool end()
Reimplement this function to finish painting on the current paint device.
int metric(QPaintDevice::PaintDeviceMetric) const
Returns the metric for the given id.
QVariant property(PrintEnginePropertyKey key) const
Returns the print engine&#39;s property specified by key.
int key
void drawTextItem(const QPointF &p, const QTextItem &textItem)
This function draws the text item textItem at position p.
The QPixmap class is an off-screen image representation that can be used as a paint device...
Definition: qpixmap.h:71
The QPaintEngineState class provides information about the active paint engine&#39;s current state...
Definition: qpaintengine.h:289
#define Q_DECLARE_PRIVATE(Class)
Definition: qglobal.h:2467
The QTextItem class provides all the information required to draw text in a custom paint engine...
Definition: qpaintengine.h:68
QPaintEngine::Type type() const
Reimplement this function to return the paint engine Type.
void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr)
Reimplement this function to draw the part of the pm specified by the sr rectangle in the given r...
The QList class is a template class that provides lists.
Definition: qdatastream.h:62
PrintEnginePropertyKey
This enum is used to communicate properties between the print engine and QPrinter.
Definition: qprintengine.h:60