Python core.QgsLayoutSnapper类代码示例

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本文整理汇总了Python中qgis.core.QgsLayoutSnapper类的典型用法代码示例。如果您正苦于以下问题：Python QgsLayoutSnapper类的具体用法？Python QgsLayoutSnapper怎么用？Python QgsLayoutSnapper使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了QgsLayoutSnapper类的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Python代码示例。

示例1: testSnapRect

    def testSnapRect(self):
        p = QgsProject()
        l = QgsLayout(p)
        page = QgsLayoutItemPage(l)
        page.setPageSize('A4')
        l.pageCollection().addPage(page)
        s = QgsLayoutSnapper(l)
        guides = l.guides()

        # first test snapping to grid
        l.gridSettings().setResolution(QgsLayoutMeasurement(5, QgsUnitTypes.LayoutMillimeters))
        s.setSnapToItems(False)
        s.setSnapToGrid(True)
        s.setSnapTolerance(1)

        rect, snapped = s.snapRect(QRectF(1, 1, 2, 1), 1)
        self.assertTrue(snapped)
        self.assertEqual(rect, QRectF(0, 0, 2, 1))
        rect, snapped = s.snapRect(QRectF(1, 1, 3.5, 3.5), 1)
        self.assertTrue(snapped)
        self.assertEqual(rect, QRectF(1.5, 1.5, 3.5, 3.5))

        s.setSnapToItems(False)
        s.setSnapToGrid(False)
        rect, snapped = s.snapRect(QRectF(1, 1, 3.5, 3.5), 1)
        self.assertFalse(snapped)
        self.assertEqual(rect, QRectF(1, 1, 3.5, 3.5))

        # test that guide takes precedence
        s.setSnapToGrid(True)
        s.setSnapToGuides(True)
        guides.addGuide(QgsLayoutGuide(Qt.Horizontal, QgsLayoutMeasurement(0.5), page))
        rect, snapped = s.snapRect(QRectF(1, 1, 2, 3), 1)
        self.assertTrue(snapped)
        self.assertEqual(rect, QRectF(0.0, 0.5, 2.0, 3.0))

        # add an item
        item1 = QgsLayoutItemMap(l)
        item1.attemptMove(QgsLayoutPoint(121, 1.1, QgsUnitTypes.LayoutMillimeters))
        l.addItem(item1)

        # test that guide takes precedence over item
        s.setSnapToGrid(True)
        s.setSnapToGuides(True)
        s.setSnapToItems(True)
        rect, snapped = s.snapRect(QRectF(1, 1, 2, 3), 1)
        self.assertTrue(snapped)
        self.assertEqual(rect, QRectF(0.0, 0.5, 2.0, 3.0))
        # but items take precedence over grid
        s.setSnapToGuides(False)
        rect, snapped = s.snapRect(QRectF(1, 1, 2, 3), 1)
        self.assertTrue(snapped)
        self.assertEqual(rect, QRectF(0.0, 1.1, 2.0, 3.0))

        # ... unless item is ignored!
        rect, snapped = s.snapRect(QRectF(1, 1, 2, 3), 1, None, None, [item1])
        self.assertTrue(snapped)
        self.assertEqual(rect, QRectF(0.0, 0.0, 2.0, 3.0))

开发者ID:elpaso，项目名称:QGIS，代码行数:58，代码来源:test_qgslayoutsnapper.py

示例2: testSnapPointToGrid

    def testSnapPointToGrid(self):
        p = QgsProject()
        l = QgsLayout(p)
        # need a page to snap to grid
        page = QgsLayoutItemPage(l)
        page.setPageSize('A4')
        l.pageCollection().addPage(page)
        s = QgsLayoutSnapper(l)

        l.gridSettings().setResolution(QgsLayoutMeasurement(5, QgsUnitTypes.LayoutMillimeters))

        s.setSnapToGrid(True)
        s.setSnapTolerance(1)

        point, snappedX, snappedY = s.snapPointToGrid(QPointF(1, 1), 1)
        self.assertTrue(snappedX)
        self.assertTrue(snappedY)
        self.assertEqual(point, QPointF(0, 0))

        point, snappedX, snappedY = s.snapPointToGrid(QPointF(9, 1), 1)
        self.assertTrue(snappedX)
        self.assertTrue(snappedY)
        self.assertEqual(point, QPointF(10, 0))

        point, snappedX, snappedY = s.snapPointToGrid(QPointF(1, 11), 1)
        self.assertTrue(snappedX)
        self.assertTrue(snappedY)
        self.assertEqual(point, QPointF(0, 10))

        point, snappedX, snappedY = s.snapPointToGrid(QPointF(13, 11), 1)
        self.assertFalse(snappedX)
        self.assertTrue(snappedY)
        self.assertEqual(point, QPointF(13, 10))

        point, snappedX, snappedY = s.snapPointToGrid(QPointF(11, 13), 1)
        self.assertTrue(snappedX)
        self.assertFalse(snappedY)
        self.assertEqual(point, QPointF(10, 13))

        point, snappedX, snappedY = s.snapPointToGrid(QPointF(13, 23), 1)
        self.assertFalse(snappedX)
        self.assertFalse(snappedY)
        self.assertEqual(point, QPointF(13, 23))

        # grid disabled
        s.setSnapToGrid(False)
        point, nappedX, snappedY = s.snapPointToGrid(QPointF(1, 1), 1)
        self.assertFalse(nappedX)
        self.assertFalse(snappedY)
        self.assertEqual(point, QPointF(1, 1))
        s.setSnapToGrid(True)

        # with different pixel scale
        point, snappedX, snappedY = s.snapPointToGrid(QPointF(0.5, 0.5), 1)
        self.assertTrue(snappedX)
        self.assertTrue(snappedY)
        self.assertEqual(point, QPointF(0, 0))
        point, snappedX, snappedY = s.snapPointToGrid(QPointF(0.5, 0.5), 3)
        self.assertFalse(snappedX)
        self.assertFalse(snappedY)
        self.assertEqual(point, QPointF(0.5, 0.5))

        # with offset grid
        l.gridSettings().setOffset(QgsLayoutPoint(2, 0))
        point, snappedX, snappedY = s.snapPointToGrid(QPointF(13, 23), 1)
        self.assertTrue(snappedX)
        self.assertFalse(snappedY)
        self.assertEqual(point, QPointF(12, 23))

开发者ID:elpaso，项目名称:QGIS，代码行数:68，代码来源:test_qgslayoutsnapper.py

示例3: testGettersSetters

    def testGettersSetters(self):
        p = QgsProject()
        l = QgsLayout(p)
        s = QgsLayoutSnapper(l)

        s.setSnapToGrid(False)
        self.assertFalse(s.snapToGrid())
        s.setSnapToGrid(True)
        self.assertTrue(s.snapToGrid())

        s.setSnapToGuides(False)
        self.assertFalse(s.snapToGuides())
        s.setSnapToGuides(True)
        self.assertTrue(s.snapToGuides())

        s.setSnapToItems(False)
        self.assertFalse(s.snapToItems())
        s.setSnapToItems(True)
        self.assertTrue(s.snapToItems())

        s.setSnapTolerance(15)
        self.assertEqual(s.snapTolerance(), 15)

开发者ID:elpaso，项目名称:QGIS，代码行数:22，代码来源:test_qgslayoutsnapper.py

示例4: testSnapPointsToItems

    def testSnapPointsToItems(self):
        p = QgsProject()
        l = QgsLayout(p)
        page = QgsLayoutItemPage(l)
        page.setPageSize('A4')
        #l.pageCollection().addPage(page)
        s = QgsLayoutSnapper(l)
        guides = l.guides()

        s.setSnapToItems(True)
        s.setSnapTolerance(1)

        # no items
        point, snapped = s.snapPointsToItems([0.5], Qt.Horizontal, 1, [])
        self.assertFalse(snapped)

        line = QGraphicsLineItem()
        line.setVisible(True)
        point, snapped = s.snapPointsToItems([0.5], Qt.Horizontal, 1, [], line)
        self.assertFalse(line.isVisible())

        guides.addGuide(QgsLayoutGuide(Qt.Vertical, QgsLayoutMeasurement(1), page))

        # add an item
        item1 = QgsLayoutItemMap(l)
        item1.attemptMove(QgsLayoutPoint(4, 8, QgsUnitTypes.LayoutMillimeters))
        item1.attemptResize(QgsLayoutSize(18, 12, QgsUnitTypes.LayoutMillimeters))
        l.addItem(item1)

        point, snapped = s.snapPointsToItems([3.5], Qt.Horizontal, 1, [], line)
        self.assertTrue(snapped)
        self.assertEqual(point, 0.5)
        self.assertTrue(line.isVisible())
        point, snapped = s.snapPointsToItems([4.5], Qt.Horizontal, 1, [])
        self.assertTrue(snapped)
        self.assertEqual(point, -0.5)
        point, snapped = s.snapPointsToItems([4.6, 4.5], Qt.Horizontal, 1, [])
        self.assertTrue(snapped)
        self.assertEqual(point, -0.5)
        point, snapped = s.snapPointsToItems([4.6, 4.5, 3.7], Qt.Horizontal, 1, [])
        self.assertTrue(snapped)
        self.assertAlmostEqual(point, 0.3, 5)

        # ignoring item
        point, snapped = s.snapPointsToItems([4.5], Qt.Horizontal, 1, [item1])
        self.assertFalse(snapped)

        # outside tolerance
        point, snapped = s.snapPointsToItems([5.5], Qt.Horizontal, 1, [], line)
        self.assertFalse(snapped)
        self.assertFalse(line.isVisible())

        # snap to center
        point, snapped = s.snapPointsToItems([12.5], Qt.Horizontal, 1, [])
        self.assertTrue(snapped)
        self.assertEqual(point, 0.5)

        # snap to right
        point, snapped = s.snapPointsToItems([22.5], Qt.Horizontal, 1, [])
        self.assertTrue(snapped)
        self.assertEqual(point, -0.5)

        #snap to top
        point, snapped = s.snapPointsToItems([7.5], Qt.Vertical, 1, [], line)
        self.assertTrue(snapped)
        self.assertEqual(point, 0.5)
        self.assertTrue(line.isVisible())
        point, snapped = s.snapPointsToItems([8.5], Qt.Vertical, 1, [])
        self.assertTrue(snapped)
        self.assertEqual(point, -0.5)

        # outside tolerance
        point, snapped = s.snapPointsToItems([5.5], Qt.Vertical, 1, [], line)
        self.assertFalse(snapped)
        self.assertFalse(line.isVisible())

        # snap to center
        point, snapped = s.snapPointsToItems([13.5], Qt.Vertical, 1, [])
        self.assertTrue(snapped)
        self.assertEqual(point, 0.5)

        # snap to bottom
        point, snapped = s.snapPointsToItems([20.5], Qt.Vertical, 1, [])
        self.assertTrue(snapped)
        self.assertEqual(point, -0.5)

        # snapping off
        s.setSnapToItems(False)
        line.setVisible(True)
        point, snapped = s.snapPointsToItems([20.5], Qt.Vertical, 1, [], line)
        self.assertFalse(snapped)
        self.assertFalse(line.isVisible())

        # with different pixel scale
        s.setSnapToItems(True)
        point, snapped = s.snapPointsToItems([20.5], Qt.Vertical, 3, [])
        self.assertFalse(snapped)

开发者ID:elpaso，项目名称:QGIS，代码行数:97，代码来源:test_qgslayoutsnapper.py

示例5: testSnapPointsToGuides

    def testSnapPointsToGuides(self):
        p = QgsProject()
        l = QgsLayout(p)
        page = QgsLayoutItemPage(l)
        page.setPageSize('A4')
        l.pageCollection().addPage(page)
        s = QgsLayoutSnapper(l)
        guides = l.guides()

        s.setSnapToGuides(True)
        s.setSnapTolerance(1)

        # no guides
        delta, snapped = s.snapPointsToGuides([0.5], Qt.Vertical, 1)
        self.assertFalse(snapped)

        guides.addGuide(QgsLayoutGuide(Qt.Vertical, QgsLayoutMeasurement(1), page))
        point, snapped = s.snapPointsToGuides([0.7], Qt.Vertical, 1)
        self.assertTrue(snapped)
        self.assertAlmostEqual(point, 0.3, 5)

        point, snapped = s.snapPointsToGuides([0.7, 1.2], Qt.Vertical, 1)
        self.assertTrue(snapped)
        self.assertAlmostEqual(point, -0.2, 5)

        # outside tolerance
        point, snapped = s.snapPointsToGuides([5.5], Qt.Vertical, 1)
        self.assertFalse(snapped)

        # snapping off
        s.setSnapToGuides(False)
        point, snapped = s.snapPointsToGuides([0.5], Qt.Vertical, 1)
        self.assertFalse(snapped)

        s.setSnapToGuides(True)

        # snap to hoz
        point, snapped = s.snapPointsToGuides([0.5], Qt.Horizontal, 1)
        self.assertFalse(snapped)
        guides.addGuide(QgsLayoutGuide(Qt.Horizontal, QgsLayoutMeasurement(1), page))
        point, snapped = s.snapPointsToGuides([0.7], Qt.Horizontal, 1)
        self.assertTrue(snapped)
        self.assertAlmostEqual(point, 0.3, 5)
        point, snapped = s.snapPointsToGuides([0.7, 1.2], Qt.Horizontal, 1)
        self.assertTrue(snapped)
        self.assertAlmostEqual(point, -0.2, 5)
        point, snapped = s.snapPointsToGuides([0.7, 0.9, 1.2], Qt.Horizontal, 1)
        self.assertTrue(snapped)
        self.assertAlmostEqual(point, 0.1, 5)

        # with different pixel scale
        point, snapped = s.snapPointsToGuides([0.5, 1.5], Qt.Horizontal, 3)
        self.assertFalse(snapped)

开发者ID:elpaso，项目名称:QGIS，代码行数:53，代码来源:test_qgslayoutsnapper.py

示例6: testSnapPoint

    def testSnapPoint(self):
        p = QgsProject()
        l = QgsLayout(p)
        page = QgsLayoutItemPage(l)
        page.setPageSize('A4')
        l.pageCollection().addPage(page)
        s = QgsLayoutSnapper(l)
        guides = l.guides()

        # first test snapping to grid
        l.gridSettings().setResolution(QgsLayoutMeasurement(5, QgsUnitTypes.LayoutMillimeters))
        s.setSnapToGrid(True)
        s.setSnapTolerance(1)

        point, snapped = s.snapPoint(QPointF(1, 1), 1)
        self.assertTrue(snapped)
        self.assertEqual(point, QPointF(0, 0))

        s.setSnapToGrid(False)
        point, snapped = s.snapPoint(QPointF(1, 1), 1)
        self.assertFalse(snapped)
        self.assertEqual(point, QPointF(1, 1))

        # test that guide takes precedence
        s.setSnapToGrid(True)
        s.setSnapToGuides(True)
        guides.addGuide(QgsLayoutGuide(QgsLayoutGuide.Horizontal, QgsLayoutMeasurement(0.5), page))
        point, snapped = s.snapPoint(QPointF(1, 1), 1)
        self.assertTrue(snapped)
        self.assertEqual(point, QPointF(0, 0.5))

开发者ID:exlimit，项目名称:QGIS，代码行数:30，代码来源:test_qgslayoutsnapper.py

示例7: testSnapPointToGuides

    def testSnapPointToGuides(self):
        p = QgsProject()
        l = QgsLayout(p)
        page = QgsLayoutItemPage(l)
        page.setPageSize('A4')
        l.pageCollection().addPage(page)
        s = QgsLayoutSnapper(l)
        guides = l.guides()

        s.setSnapToGuides(True)
        s.setSnapTolerance(1)

        # no guides
        point, snapped = s.snapPointToGuides(0.5, QgsLayoutGuide.Vertical, 1)
        self.assertFalse(snapped)

        guides.addGuide(QgsLayoutGuide(QgsLayoutGuide.Vertical, QgsLayoutMeasurement(1), page))
        point, snapped = s.snapPointToGuides(0.5, QgsLayoutGuide.Vertical, 1)
        self.assertTrue(snapped)
        self.assertEqual(point, 1)

        # outside tolerance
        point, snapped = s.snapPointToGuides(5.5, QgsLayoutGuide.Vertical, 1)
        self.assertFalse(snapped)

        # snapping off
        s.setSnapToGuides(False)
        point, snapped = s.snapPointToGuides(0.5, QgsLayoutGuide.Vertical, 1)
        self.assertFalse(snapped)

        s.setSnapToGuides(True)
        # snap to hoz
        point, snapped = s.snapPointToGuides(0.5, QgsLayoutGuide.Horizontal, 1)
        self.assertFalse(snapped)
        guides.addGuide(QgsLayoutGuide(QgsLayoutGuide.Horizontal, QgsLayoutMeasurement(1), page))
        point, snapped = s.snapPointToGuides(0.5, QgsLayoutGuide.Horizontal, 1)
        self.assertTrue(snapped)
        self.assertEqual(point, 1)

        # with different pixel scale
        point, snapped = s.snapPointToGuides(0.5, QgsLayoutGuide.Horizontal, 3)
        self.assertFalse(snapped)

开发者ID:exlimit，项目名称:QGIS，代码行数:42，代码来源:test_qgslayoutsnapper.py

注：本文中的qgis.core.QgsLayoutSnapper类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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Python core.QgsLayoutSnapper类代码示例

示例1: testSnapRect

示例2: testSnapPointToGrid

示例3: testGettersSetters

示例4: testSnapPointsToItems

示例5: testSnapPointsToGuides

示例6: testSnapPoint

示例7: testSnapPointToGuides

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