From 427c7147d23fa21c6e8bd08407b1badc48b49c3c Mon Sep 17 00:00:00 2001 From: Oswald Buddenhagen Date: Mon, 22 May 2017 16:44:51 +0200 Subject: move everying into sources/pyside2 (5.9 edition) in preparation for a subtree merge. this should not be necessary to do in a separate commit, but git is a tad stupid about following history correctly without it. --- .../code/src_gui_graphicsview_qgraphicsitem.cpp | 249 +++++++++++++++++++++ 1 file changed, 249 insertions(+) create mode 100644 sources/pyside2/doc/codesnippets/doc/src/snippets/code/src_gui_graphicsview_qgraphicsitem.cpp (limited to 'sources/pyside2/doc/codesnippets/doc/src/snippets/code/src_gui_graphicsview_qgraphicsitem.cpp') diff --git a/sources/pyside2/doc/codesnippets/doc/src/snippets/code/src_gui_graphicsview_qgraphicsitem.cpp b/sources/pyside2/doc/codesnippets/doc/src/snippets/code/src_gui_graphicsview_qgraphicsitem.cpp new file mode 100644 index 000000000..67e588075 --- /dev/null +++ b/sources/pyside2/doc/codesnippets/doc/src/snippets/code/src_gui_graphicsview_qgraphicsitem.cpp @@ -0,0 +1,249 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the documentation of PySide2. +** +** $QT_BEGIN_LICENSE:BSD$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, you may use this file under the terms of the BSD license +** as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of The Qt Company Ltd nor the names of its +** contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +//! [0] +class SimpleItem(QGraphicsItem): + + def boundingRect(self): + penWidth = 1.0 + return QRectF(-10 - penWidth / 2, -10 - penWidth / 2, + 20 + penWidth, 20 + penWidth) + + def paint(self, painter, option, widget): + painter.drawRoundedRect(-10, -10, 20, 20, 5, 5) +//! [0] + + +//! [1] +class CustomItem(QGraphicsItem): + ... + self.Type = QGraphicsItem.UserType + 1 + + def type(self): + # Enable the use of qgraphicsitem_cast with this item. + return self.Type + ... + +//! [1] + + +//! [2] +item.setCursor(Qt.IBeamCursor) +//! [2] + + +//! [3] +item.setCursor(Qt.IBeamCursor) +//! [3] + + +//! [4] +rect = QGraphicsRectItem() +rect.setPos(100, 100) + +rect.sceneTransform().map(QPointF(0, 0)) +# returns QPointF(100, 100) + +rect.sceneTransform().inverted().map(QPointF(100, 100)) +# returns QPointF(0, 0); +//! [4] + + +//! [5] +rect = QGraphicsRectItem() +rect.setPos(100, 100) + +rect.deviceTransform(view.viewportTransform()).map(QPointF(0, 0)) +# returns the item's (0, 0) point in view's viewport coordinates + +rect.deviceTransform(view.viewportTransform()).inverted().map(QPointF(100, 100)) +# returns view's viewport's (100, 100) coordinate in item coordinates +//! [5] + + +//! [6] +# Rotate an item 45 degrees around (0, 0) +item.rotate(45) + +# Rotate an item 45 degrees around (x, y) +item.setTransform(QTransform().translate(x, y).rotate(45).translate(-x, -y)) +//! [6] + + +//! [7] +# Scale an item by 3x2 from its origin +item.scale(3, 2) + +# Scale an item by 3x2 from (x, y) +item.setTransform(QTransform().translate(x, y).scale(3, 2).translate(-x, -y)) +//! [7] + + +//! [8] +def boundingRect(self): + penWidth = 1.0 + return QRectF(-radius - penWidth / 2, -radius - penWidth / 2, + diameter + penWidth, diameter + penWidth) +//! [8] + + +//! [9] +def shape(self): + path = QPainterPath() + path.addEllipse(boundingRect()) + return path +//! [9] + + +//! [10] +def paint(self, painter, option, widget): + painter.drawRoundedRect(-10, -10, 20, 20, 5, 5) +//! [10] + + +//! [11] +ObjectName = 0; + +item = scene.itemAt(100, 50) +if len(item.data(ObjectName)) == 0: + if isinstance(ButtonItem, item): + item.setData(ObjectName, "Button") +//! [11] + + +//! [12] +scene = QGraphicsScene() +ellipse = scene.addEllipse(QRectF(-10, -10, 20, 20)) +line = scene.addLine(QLineF(-10, -10, 20, 20)) + +line.installSceneEventFilter(ellipse) +# line's events are filtered by ellipse's sceneEventFilter() function. + +ellipse.installSceneEventFilter(line) +# ellipse's events are filtered by line's sceneEventFilter() function. +//! [12] + + +//! [13] +def contextMenuEvent(self, event): + menu = QMenu() + removeAction = menu.addAction("Remove") + markAction = menu.addAction("Mark") + selectedAction = menu.exec(event.screenPos()) + // ... +//! [13] + + +//! [14] +def __init__(self): + self.setAcceptDrops(true) + ... + +def dragEnterEvent(self, event): + event.setAccepted(event.mimeData().hasFormat("text/plain")) +//! [14] + + +//! [15] +def itemChange(self, change, value): + if change == ItemPositionChange && scene(): + # value is the new position. + rect = scene().sceneRect() + if !rect.contains(value): + # Keep the item inside the scene rect. + value.setX(qMin(rect.right(), qMax(value.x(), rect.left()))) + value.setY(qMin(rect.bottom(), qMax(value.y(), rect.top()))) + return value + return QGraphicsItem.itemChange(self, change, value) +//! [15] + + +//! [16] +def setRadius(self, newRadius): + if radius != newRadius: + prepareGeometryChange() + radius = newRadius +//! [16] + + +//! [17] +# Group all selected items together +group = scene.createItemGroup(scene.selecteditems()) + +# Destroy the group, and delete the group item +scene.destroyItemGroup(group) +//! [17] + + +//! [QGraphicsItem type] +class CustomItem(QGraphicsItem): + ... + self.Type = QGraphicsItem.UserType + 1 + + def type(self): + # Enable the use of qgraphicsitem_cast with this item. + return self.Type + ... +//! [QGraphicsItem type] + +//! [18] +class QGraphicsPathItem (QAbstractGraphicsShapeItem): + Type = 2 + + def type(self): + return QGraphicsPathItem.Type +# ... +//! [18] + +//! [19] +xform = item.deviceTransform(view.viewportTransform()) +deviceRect = xform.mapRect(rect).toAlignedRect() +view.viewport().scroll(dx, dy, deviceRect) +//! [19] -- cgit v1.2.3