70 lines
2.1 KiB
Python
70 lines
2.1 KiB
Python
from qgis.PyQt.QtCore import (
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QUrl,
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QSize
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)
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from qgis.core import (
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QgsLayoutItem,
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QgsLayoutItemRegistry,
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QgsLayoutItemAbstractMetadata,
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QgsNetworkAccessManager,
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QgsMessageLog,
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QgsGeometry
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)
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from qgis.PyQt.QtWebKitWidgets import QWebPage
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ITEM_TYPE = QgsLayoutItemRegistry.PluginItem + 1338
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class LoggingWebPage(QWebPage):
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def __init__(self, parent=None):
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super().__init__(parent)
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def javaScriptConsoleMessage(self, message, lineNumber, source):
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QgsMessageLog.logMessage('{}:{} {}'.format(source, lineNumber, message), 'plot-layout')
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class PlotLayoutItem(QgsLayoutItem):
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def __init__(self, layout):
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super().__init__(layout)
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self.web_page = LoggingWebPage(self)
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self.web_page.mainFrame().setZoomFactor(30.0)
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self.html_units_to_layout_units = self.calculate_html_units_to_layout_units()
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def calculate_html_units_to_layout_units(self):
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if not self.layout():
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return 1
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return 72
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def draw(self, context):
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base_url = QUrl.fromLocalFile(self.layout().project().absoluteFilePath())
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self.web_page.setViewportSize(QSize(self.rect().width() * self.html_units_to_layout_units,
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self.rect().height() * self.html_units_to_layout_units))
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self.web_page.mainFrame().setHtml('<b>Hello</b>', base_url)
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# almost a direct copy from QgsLayoutItemLabel!
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painter = context.renderContext().painter()
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painter.save()
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# painter is scaled to dots, so scale back to layout units
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painter.scale(context.renderContext().scaleFactor() / self.html_units_to_layout_units,
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context.renderContext().scaleFactor() / self.html_units_to_layout_units)
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self.web_page.mainFrame().render(painter)
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def type(self):
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return ITEM_TYPE
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class PlotLayoutItemMetadata(QgsLayoutItemAbstractMetadata):
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def __init__(self):
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super().__init__(ITEM_TYPE, 'layoutItem')
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def createItem(self, layout):
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return PlotLayoutItem(layout) |