本文整理汇总了Python中qgis.PyQt.QtGui.QImage类的典型用法代码示例。如果您正苦于以下问题：Python QImage类的具体用法？Python QImage怎么用？Python QImage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QImage类的20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: testRenderLineLayerDisabled
def testRenderLineLayerDisabled(self):
""" test that rendering a line symbol with disabled layer works"""
layer = QgsSimpleLineSymbolLayer()
layer.setEnabled(False)
symbol = QgsLineSymbol()
symbol.changeSymbolLayer(0, layer)
image = QImage(200, 200, QImage.Format_RGB32)
painter = QPainter()
ms = QgsMapSettings()
geom = QgsGeometry.fromWkt('LineString (0 0,3 4,4 3)')
f = QgsFeature()
f.setGeometry(geom)
extent = geom.constGet().boundingBox()
# buffer extent by 10%
extent = extent.buffered((extent.height() + extent.width()) / 20.0)
ms.setExtent(extent)
ms.setOutputSize(image.size())
context = QgsRenderContext.fromMapSettings(ms)
context.setPainter(painter)
context.setScaleFactor(96 / 25.4) # 96 DPI
painter.begin(image)
image.fill(QColor(255, 255, 255))
symbol.startRender(context)
symbol.renderFeature(f, context)
symbol.stopRender(context)
painter.end()
self.assertTrue(self.imageCheck('symbol_layer', 'symbollayer_disabled', image))
开发者ID:mj10777，项目名称:QGIS，代码行数:35，代码来源:test_qgssymbollayer.py
示例2: runTestForLayer
def runTestForLayer(self, layer, testname):
tempdir = tempfile.mkdtemp()
layer = QgsVectorLayer(layer, 'Layer', 'ogr')
QgsProject.instance().addMapLayer(layer)
self.iface.mapCanvas().setExtent(layer.extent())
geom = next(layer.getFeatures()).geometry()
highlight = QgsHighlight(self.iface.mapCanvas(), geom, layer)
color = QColor(Qt.red)
highlight.setColor(color)
highlight.setWidth(2)
color.setAlpha(50)
highlight.setFillColor(color)
highlight.show()
image = QImage(QSize(400, 400), QImage.Format_ARGB32)
image.fill(Qt.white)
painter = QPainter()
painter.begin(image)
self.iface.mapCanvas().render(painter)
painter.end()
control_image = os.path.join(tempdir, 'highlight_{}.png'.format(testname))
image.save(control_image)
checker = QgsRenderChecker()
checker.setControlPathPrefix("highlight")
checker.setControlName("expected_highlight_{}".format(testname))
checker.setRenderedImage(control_image)
self.assertTrue(checker.compareImages("highlight_{}".format(testname)))
shutil.rmtree(tempdir)
开发者ID:ufolr，项目名称:QGIS，代码行数:31，代码来源:test_qgshighlight.py
示例3: testSimpleLineWithOffset
def testSimpleLineWithOffset(self):
""" test that rendering a polygon with simple line symbol with offset results in closed line"""
layer = QgsSimpleLineSymbolLayer()
layer.setOffset(-1)
symbol = QgsFillSymbol()
symbol.changeSymbolLayer(0, layer)
image = QImage(200, 200, QImage.Format_RGB32)
painter = QPainter()
ms = QgsMapSettings()
geom = QgsGeometry.fromWkt('Polygon((0 0, 10 0, 10 10, 0 10, 0 0))')
f = QgsFeature()
f.setGeometry(geom)
extent = geom.geometry().boundingBox()
# buffer extent by 10%
extent = extent.buffer((extent.height() + extent.width()) / 20.0)
ms.setExtent(extent)
ms.setOutputSize(image.size())
context = QgsRenderContext.fromMapSettings(ms)
context.setPainter(painter)
context.setScaleFactor(96 / 25.4) # 96 DPI
painter.begin(image)
image.fill(QColor(255, 255, 255))
symbol.startRender(context)
symbol.renderFeature(f, context)
symbol.stopRender(context)
painter.end()
self.assertTrue(self.imageCheck('symbol_layer', 'fill_simpleline_offset', image))
开发者ID:wongjimsan，项目名称:QGIS，代码行数:35，代码来源:test_qgsfillsymbollayers.py
示例4: exportAsImage
def exportAsImage(self):
self.repaintModel(controls=False)
filename, fileFilter = QFileDialog.getSaveFileName(self,
self.tr('Save Model As Image'), '',
self.tr('PNG files (*.png *.PNG)'))
if not filename:
return
if not filename.lower().endswith('.png'):
filename += '.png'
totalRect = self.scene.itemsBoundingRect()
totalRect.adjust(-10, -10, 10, 10)
imgRect = QRectF(0, 0, totalRect.width(), totalRect.height())
img = QImage(totalRect.width(), totalRect.height(),
QImage.Format_ARGB32_Premultiplied)
img.fill(Qt.white)
painter = QPainter()
painter.setRenderHint(QPainter.Antialiasing)
painter.begin(img)
self.scene.render(painter, imgRect, totalRect)
painter.end()
img.save(filename)
self.bar.pushMessage("", "Model was correctly exported as image", level=Qgis.Success, duration=5)
self.repaintModel(controls=True)
开发者ID:Cracert，项目名称:Quantum-GIS，代码行数:28，代码来源:ModelerDialog.py
示例5: exportAsImage
def exportAsImage(self):
self.repaintModel(controls=False)
filename, fileFilter = QFileDialog.getSaveFileName(self,
self.tr('Save Model As Image'), '',
self.tr('PNG files (*.png *.PNG)'))
if not filename:
return
if not filename.lower().endswith('.png'):
filename += '.png'
totalRect = self.scene.itemsBoundingRect()
totalRect.adjust(-10, -10, 10, 10)
imgRect = QRectF(0, 0, totalRect.width(), totalRect.height())
img = QImage(totalRect.width(), totalRect.height(),
QImage.Format_ARGB32_Premultiplied)
img.fill(Qt.white)
painter = QPainter()
painter.setRenderHint(QPainter.Antialiasing)
painter.begin(img)
self.scene.render(painter, imgRect, totalRect)
painter.end()
img.save(filename)
self.bar.pushMessage("", self.tr("Successfully exported model as image to <a href=\"{}\">{}</a>").format(QUrl.fromLocalFile(filename).toString(), QDir.toNativeSeparators(filename)), level=Qgis.Success, duration=5)
self.repaintModel(controls=True)
开发者ID:dwsilk，项目名称:QGIS，代码行数:28，代码来源:ModelerDialog.py
示例6: renderGeometry
def renderGeometry(self, symbol, geom, buffer=20):
f = QgsFeature()
f.setGeometry(geom)
image = QImage(200, 200, QImage.Format_RGB32)
painter = QPainter()
ms = QgsMapSettings()
extent = geom.get().boundingBox()
# buffer extent by 10%
if extent.width() > 0:
extent = extent.buffered((extent.height() + extent.width()) / buffer)
else:
extent = extent.buffered(buffer / 2)
ms.setExtent(extent)
ms.setOutputSize(image.size())
context = QgsRenderContext.fromMapSettings(ms)
context.setPainter(painter)
context.setScaleFactor(96 / 25.4) # 96 DPI
context.expressionContext().setFeature(f)
painter.begin(image)
try:
image.fill(QColor(0, 0, 0))
symbol.startRender(context)
symbol.renderFeature(f, context)
symbol.stopRender(context)
finally:
painter.end()
return image
开发者ID:manisandro，项目名称:QGIS，代码行数:32，代码来源:test_qgsmarkerlinesymbollayer.py
示例7: exportAsImage
def exportAsImage(self):
filename = unicode(QFileDialog.getSaveFileName(self,
self.tr('Save Model As Image'), '',
self.tr('PNG files (*.png *.PNG)')))
if not filename:
return
if not filename.lower().endswith('.png'):
filename += '.png'
totalRect = QRectF(0, 0, 1, 1)
for item in self.scene.items():
totalRect = totalRect.united(item.sceneBoundingRect())
totalRect.adjust(-10, -10, 10, 10)
img = QImage(totalRect.width(), totalRect.height(),
QImage.Format_ARGB32_Premultiplied)
img.fill(Qt.white)
painter = QPainter()
painter.setRenderHint(QPainter.Antialiasing)
painter.begin(img)
self.scene.render(painter, totalRect, totalRect)
painter.end()
img.save(filename)
开发者ID:frugardc，项目名称:QGIS，代码行数:25，代码来源:ModelerDialog.py
示例8: testFromQPainter
def testFromQPainter(self):
""" test QgsRenderContext.fromQPainter """
# no painter
c = QgsRenderContext.fromQPainter(None)
self.assertFalse(c.painter())
# assuming 88 dpi as fallback
self.assertAlmostEqual(c.scaleFactor(), 88 / 25.4, 3)
# no painter destination
p = QPainter()
c = QgsRenderContext.fromQPainter(p)
self.assertEqual(c.painter(), p)
self.assertEqual(c.testFlag(QgsRenderContext.Antialiasing), False)
self.assertAlmostEqual(c.scaleFactor(), 88 / 25.4, 3)
im = QImage(1000, 600, QImage.Format_RGB32)
dots_per_m = 300 / 25.4 * 1000 # 300 dpi to dots per m
im.setDotsPerMeterX(dots_per_m)
im.setDotsPerMeterY(dots_per_m)
p = QPainter(im)
p.setRenderHint(QPainter.Antialiasing)
c = QgsRenderContext.fromQPainter(p)
self.assertEqual(c.painter(), p)
self.assertEqual(c.testFlag(QgsRenderContext.Antialiasing), True)
self.assertAlmostEqual(c.scaleFactor(), dots_per_m / 1000, 3) # scaleFactor should be pixels/mm
开发者ID:boundlessgeo，项目名称:QGIS，代码行数:26，代码来源:test_qgsrendercontext.py
示例9: testRenderMarkerLayerDisabled
def testRenderMarkerLayerDisabled(self):
""" test that rendering a marker symbol with disabled layer works"""
layer = QgsSimpleMarkerSymbolLayer()
layer.setEnabled(False)
symbol = QgsMarkerSymbol()
symbol.changeSymbolLayer(0, layer)
image = QImage(200, 200, QImage.Format_RGB32)
painter = QPainter()
ms = QgsMapSettings()
geom = QgsGeometry.fromWkt('Point (1 2)')
f = QgsFeature()
f.setGeometry(geom)
extent = QgsRectangle(0, 0, 4, 4)
ms.setExtent(extent)
ms.setOutputSize(image.size())
context = QgsRenderContext.fromMapSettings(ms)
context.setPainter(painter)
context.setScaleFactor(96 / 25.4) # 96 DPI
painter.begin(image)
image.fill(QColor(255, 255, 255))
symbol.startRender(context)
symbol.renderFeature(f, context)
symbol.stopRender(context)
painter.end()
self.assertTrue(self.imageCheck('symbol_layer', 'symbollayer_disabled', image))
开发者ID:mj10777，项目名称:QGIS，代码行数:33，代码来源:test_qgssymbollayer.py
示例10: imageFromPath
def imageFromPath(path):
if (path[:7] == 'http://' or path[:7] == 'file://'):
#fetch remote image
data = urllib2.urlopen(path).read()
image = QImage()
image.loadFromData(data)
else:
image = QImage(path)
return image
开发者ID:PeterTFS，项目名称:QGIS，代码行数:9，代码来源:generate_test_mask_image.py
示例11: _svg_to_png
def _svg_to_png(svg_file_path, rendered_file_path, width):
svgr = QSvgRenderer(svg_file_path)
height = width / svgr.viewBoxF().width() * svgr.viewBoxF().height()
image = QImage(width, height, QImage.Format_ARGB32)
image.fill(Qt.transparent)
p = QPainter(image)
p.setRenderHint(QPainter.Antialiasing, False)
svgr.render(p)
p.end()
res = image.save(rendered_file_path, 'png')
if not res:
os.unlink(rendered_file_path)
开发者ID:dmarteau，项目名称:QGIS，代码行数:16，代码来源:test_qgsserver_wms_getprint.py
示例12: __init__
def __init__(self, parent, context, webPage, layerType):
QObject.__init__(self, parent)
debug("OpenlayersController.__init__", 3)
self.context = context
self.layerType = layerType
self.img = QImage()
self.page = webPage
self.page.loadFinished.connect(self.pageLoaded)
# initial size for map
self.page.setViewportSize(QSize(1, 1))
self.timerMapReady = QTimer()
self.timerMapReady.setSingleShot(True)
self.timerMapReady.setInterval(20)
self.timerMapReady.timeout.connect(self.checkMapReady)
self.timer = QTimer()
self.timer.setInterval(100)
self.timer.timeout.connect(self.checkMapUpdate)
self.timerMax = QTimer()
self.timerMax.setSingleShot(True)
# TODO: different timeouts for map types
self.timerMax.setInterval(2500)
self.timerMax.timeout.connect(self.mapTimeout)
开发者ID:mapplus，项目名称:qgis-tmsforkorea-plugin，代码行数:28，代码来源:openlayers_layer.py
示例13: image
def image(self):
width = (self.xmax - self.xmin + 1) * self.TILE_SIZE
height = (self.ymax - self.ymin + 1) * self.TILE_SIZE
image = QImage(width, height, QImage.Format_ARGB32_Premultiplied)
p = QPainter(image)
for tile in list(self.tiles.values()):
if not tile.data:
continue
x = tile.x - self.xmin
y = tile.y - self.ymin
rect = QRect(x * self.TILE_SIZE, y * self.TILE_SIZE, self.TILE_SIZE, self.TILE_SIZE)
timg = QImage()
timg.loadFromData(tile.data)
p.drawImage(rect, timg)
return image
开发者ID:boundlessgeo，项目名称:qgis-baselayers-plugin，代码行数:17，代码来源:tiles.py
示例14: testRenderPage
def testRenderPage(self):
l = QgsLayout(QgsProject.instance())
l.initializeDefaults()
# add some items
item1 = QgsLayoutItemShape(l)
item1.attemptSetSceneRect(QRectF(10, 20, 100, 150))
fill = QgsSimpleFillSymbolLayer()
fill_symbol = QgsFillSymbol()
fill_symbol.changeSymbolLayer(0, fill)
fill.setColor(Qt.green)
fill.setStrokeStyle(Qt.NoPen)
item1.setSymbol(fill_symbol)
l.addItem(item1)
# get width/height, create image and render the composition to it
size = QSize(1122, 794)
output_image = QImage(size, QImage.Format_RGB32)
output_image.setDotsPerMeterX(self.dots_per_meter)
output_image.setDotsPerMeterY(self.dots_per_meter)
QgsMultiRenderChecker.drawBackground(output_image)
painter = QPainter(output_image)
exporter = QgsLayoutExporter(l)
# valid page
exporter.renderPage(painter, 0)
painter.end()
rendered_file_path = os.path.join(self.basetestpath, 'test_renderpage.png')
output_image.save(rendered_file_path, "PNG")
self.assertTrue(self.checkImage('renderpage', 'renderpage', rendered_file_path))
开发者ID:lyhkop，项目名称:QGIS，代码行数:32，代码来源:test_qgslayoutexporter.py
示例15: testLayout
def testLayout(self, page=0, pixelDiff=0):
if self.layout is None:
myMessage = "Layout not valid"
return False, myMessage
# load expected image
self.setControlName("expected_" + self.test_name)
# get width/height, create image and render the composition to it
outputImage = QImage(self.size, QImage.Format_RGB32)
outputImage.setDotsPerMeterX(self.dots_per_meter)
outputImage.setDotsPerMeterY(self.dots_per_meter)
QgsMultiRenderChecker.drawBackground(outputImage)
p = QPainter(outputImage)
self.layout.exporter().renderPage(p, page)
p.end()
renderedFilePath = QDir.tempPath() + QDir.separator() + QFileInfo(self.test_name).baseName() + "_rendered.png"
outputImage.save(renderedFilePath, "PNG")
self.setRenderedImage(renderedFilePath)
testResult = self.runTest(self.test_name, pixelDiff)
return testResult, self.report()
开发者ID:cz172638，项目名称:QGIS，代码行数:26，代码来源:qgslayoutchecker.py
示例16: renderGeometry
def renderGeometry(self, geom):
f = QgsFeature()
f.setGeometry(geom)
image = QImage(200, 200, QImage.Format_RGB32)
painter = QPainter()
ms = QgsMapSettings()
extent = geom.get().boundingBox()
# buffer extent by 10%
if extent.width() > 0:
extent = extent.buffered((extent.height() + extent.width()) / 20.0)
else:
extent = extent.buffered(10)
ms.setExtent(extent)
ms.setOutputSize(image.size())
context = QgsRenderContext.fromMapSettings(ms)
context.setPainter(painter)
context.setScaleFactor(96 / 25.4) # 96 DPI
painter.begin(image)
try:
image.fill(QColor(0, 0, 0))
if geom.type() == QgsWkbTypes.PolygonGeometry:
self.fill_symbol.startRender(context)
self.fill_symbol.renderFeature(f, context)
self.fill_symbol.stopRender(context)
elif geom.type() == QgsWkbTypes.LineGeometry:
self.line_symbol.startRender(context)
self.line_symbol.renderFeature(f, context)
self.line_symbol.stopRender(context)
elif geom.type() == QgsWkbTypes.PointGeometry:
self.marker_symbol.startRender(context)
self.marker_symbol.renderFeature(f, context)
self.marker_symbol.stopRender(context)
else:
self.fail("Unknown type: " + geom.type())
finally:
painter.end()
return image
开发者ID:elpaso，项目名称:QGIS，代码行数:45，代码来源:test_qgssymbol.py
示例17: testRenderRegion
def testRenderRegion(self):
l = QgsLayout(QgsProject.instance())
l.initializeDefaults()
# add a guide, to ensure it is not included in export
g1 = QgsLayoutGuide(Qt.Horizontal, QgsLayoutMeasurement(15, QgsUnitTypes.LayoutMillimeters), l.pageCollection().page(0))
l.guides().addGuide(g1)
# add some items
item1 = QgsLayoutItemShape(l)
item1.attemptSetSceneRect(QRectF(10, 20, 100, 150))
fill = QgsSimpleFillSymbolLayer()
fill_symbol = QgsFillSymbol()
fill_symbol.changeSymbolLayer(0, fill)
fill.setColor(Qt.green)
fill.setStrokeStyle(Qt.NoPen)
item1.setSymbol(fill_symbol)
l.addItem(item1)
# get width/height, create image and render the composition to it
size = QSize(560, 509)
output_image = QImage(size, QImage.Format_RGB32)
output_image.setDotsPerMeterX(self.dots_per_meter)
output_image.setDotsPerMeterY(self.dots_per_meter)
QgsMultiRenderChecker.drawBackground(output_image)
painter = QPainter(output_image)
exporter = QgsLayoutExporter(l)
exporter.renderRegion(painter, QRectF(5, 10, 110, 100))
painter.end()
rendered_file_path = os.path.join(self.basetestpath, 'test_renderregion.png')
output_image.save(rendered_file_path, "PNG")
self.assertTrue(self.checkImage('renderregion', 'renderregion', rendered_file_path))
开发者ID:lyhkop，项目名称:QGIS，代码行数:35，代码来源:test_qgslayoutexporter.py
示例18: updateMask
def updateMask(control_image_path, rendered_image_path, mask_image_path):
control_image = imageFromPath(control_image_path)
if not control_image:
error('Could not read control image {}'.format(control_image_path))
rendered_image = imageFromPath(rendered_image_path)
if not rendered_image:
error('Could not read rendered image {}'.format(rendered_image_path))
if not rendered_image.width() == control_image.width() or not rendered_image.height() == control_image.height():
print ('Size mismatch - control image is {}x{}, rendered image is {}x{}'.format(control_image.width(),
control_image.height(),
rendered_image.width(),
rendered_image.height()))
max_width = min(rendered_image.width(), control_image.width())
max_height = min(rendered_image.height(), control_image.height())
#read current mask, if it exist
mask_image = imageFromPath(mask_image_path)
if mask_image.isNull():
print 'Mask image does not exist, creating {}'.format(mask_image_path)
mask_image = QImage(control_image.width(), control_image.height(), QImage.Format_ARGB32)
mask_image.fill(QColor(0, 0, 0))
#loop through pixels in rendered image and compare
mismatch_count = 0
linebytes = max_width * 4
for y in xrange(max_height):
control_scanline = control_image.constScanLine(y).asstring(linebytes)
rendered_scanline = rendered_image.constScanLine(y).asstring(linebytes)
mask_scanline = mask_image.scanLine(y).asstring(linebytes)
for x in xrange(max_width):
currentTolerance = qRed(struct.unpack('I', mask_scanline[x * 4:x * 4 + 4])[0])
if currentTolerance == 255:
#ignore pixel
continue
expected_rgb = struct.unpack('I', control_scanline[x * 4:x * 4 + 4])[0]
rendered_rgb = struct.unpack('I', rendered_scanline[x * 4:x * 4 + 4])[0]
difference = colorDiff(expected_rgb, rendered_rgb)
if difference > currentTolerance:
#update mask image
mask_image.setPixel(x, y, qRgb(difference, difference, difference))
mismatch_count += 1
if mismatch_count:
#update mask
mask_image.save(mask_image_path, "png")
print 'Updated {} pixels in {}'.format(mismatch_count, mask_image_path)
else:
print 'No mismatches in {}'.format(mask_image_path)
开发者ID:PeterTFS，项目名称:QGIS，代码行数:54，代码来源:generate_test_mask_image.py
示例19: imageCheck
def imageCheck(self, name, reference_image, image):
self.report += "<h2>Render {}</h2>\n".format(name)
temp_dir = QDir.tempPath() + '/'
file_name = temp_dir + 'svg_' + name + ".png"
output_image = QImage(image.size(), QImage.Format_RGB32)
QgsMultiRenderChecker.drawBackground(output_image)
painter = QPainter(output_image)
painter.drawImage(0, 0, image)
painter.end()
output_image.save(file_name, "PNG")
checker = QgsRenderChecker()
checker.setControlPathPrefix("svg_cache")
checker.setControlName("expected_" + reference_image)
checker.setRenderedImage(file_name)
checker.setColorTolerance(2)
result = checker.compareImages(name, 20)
self.report += checker.report()
print((self.report))
return result
开发者ID:phborba，项目名称:QGIS，代码行数:21，代码来源:test_qgssvgcache.py
示例20: renderAnnotation
def renderAnnotation(self, annotation, offset):
image = QImage(600, 400, QImage.Format_RGB32)
image.fill(QColor(0, 0, 0, 0))
QgsRenderChecker.drawBackground(image)
painter = QPainter()
ms = QgsMapSettings()
ms.setDestinationCrs(QgsCoordinateReferenceSystem(4326))
extent = QgsRectangle(0, 5, 40, 30)
ms.setExtent(extent)
ms.setOutputSize(image.size())
context = QgsRenderContext.fromMapSettings(ms)
context.setPainter(painter)
context.setScaleFactor(96 / 25.4) # 96 DPI
painter.begin(image)
painter.translate(offset.x(), offset.y())
annotation.render(context)
painter.end()
return image
开发者ID:mbernasocchi，项目名称:QGIS，代码行数:21，代码来源:test_qgsannotation.py
注：本文中的qgis.PyQt.QtGui.QImage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。 |
客服电话
APP下载
官方微信
请发表评论