def display_mapfile_validity(self):
"""Display on GUI the validity of current mapfile."""
if self.editor.getText() <> '' and self.temp_mapfile and os.path.exists(self.temp_mapfile):
self.update_file()
renderer = MapfileRenderer(self.temp_mapfile)
message = renderer.load_mapfile()
if self.messageTextEdit is not None:
self.messageTextEdit.append(message)
mapobj = renderer.getMapObj()
if mapobj is None:
self.addLayerButton.setEnabled(False)
self.replaceLayerButton.setEnabled(False)
else:
self.addLayerButton.setEnabled(True)
self.replaceLayerButton.setEnabled(True)
self.editor.markerDeleteAll()
# display error line
regexp = re.compile('.*\(line ([0-9]*)\)')
try:
# get error line number
linenb = int(regexp.findall(message.split("\n")[-1])[-1])
# add a marker on error line in editor
# FIXME : move this code into editor's mark_error()
self.editor.markerAdd(linenb - 1, self.editor.ARROW_MARKER_NUM)
except ValueError:
# error with no line number, just ignore
pass
except IndexError:
pass
def display_mapfile_validity(self):
"""Display on GUI the validity of current mapfile."""
if self.editor.getText(
) <> '' and self.temp_mapfile and os.path.exists(self.temp_mapfile):
self.update_file()
renderer = MapfileRenderer(self.temp_mapfile)
message = renderer.load_mapfile()
if self.messageTextEdit is not None:
self.messageTextEdit.append(message)
mapobj = renderer.getMapObj()
if mapobj is None:
self.addLayerButton.setEnabled(False)
self.replaceLayerButton.setEnabled(False)
else:
self.addLayerButton.setEnabled(True)
self.replaceLayerButton.setEnabled(True)
self.editor.markerDeleteAll()
# display error line
regexp = re.compile('.*\(line ([0-9]*)\)')
try:
# get error line number
linenb = int(regexp.findall(message.split("\n")[-1])[-1])
# add a marker on error line in editor
# FIXME : move this code into editor's mark_error()
self.editor.markerAdd(linenb - 1, self.editor.ARROW_MARKER_NUM)
except ValueError:
# error with no line number, just ignore
pass
except IndexError:
pass
class MapfileLayer(QgsPluginLayer):
LAYER_TYPE="mapfile"
def __init__(self, messageTextEdit, mapfile = "", name = None):
QgsPluginLayer.__init__(self, MapfileLayer.LAYER_TYPE, "Mapfile Tools plugin layer")
self.setValid(True)
self.messageTextEdit = messageTextEdit
self.mapfile = mapfile
self.layers = ""
self.maprenderer = None
self.pixmap = None
if self.mapfile:
self.loadMapfile(mapfile, (), name)
def setupPaintArea(self, rendererContext):
rasterScaleFactor = rendererContext.rasterScaleFactor()
invRasterScaleFactor = 1.0/rasterScaleFactor
# setup painter
painter = rendererContext.painter()
painter.scale(invRasterScaleFactor, invRasterScaleFactor)
# get dimensions of painter area (so it is also correctly scaled in print composer)
extent = rendererContext.extent()
mapToPixel = rendererContext.mapToPixel()
topleft = mapToPixel.transform(extent.xMinimum(), extent.yMaximum())
bottomright = mapToPixel.transform(extent.xMaximum(), extent.yMinimum())
topleft.multiply(rasterScaleFactor)
bottomright.multiply(rasterScaleFactor)
return QgsRectangle(topleft, bottomright)
def drawUntiled(self, painter, extent, viewport):
img, message = self.maprenderer.render(extent, (viewport.width(), viewport.height()))
self.messageTextEdit.append(message)
self.pixmap.loadFromData(img)
painter.drawPixmap(viewport.xMinimum(), viewport.yMinimum(), self.pixmap)
def drawTiled(self, painter, extent, viewport, maxWidth, maxHeight):
# dimensions
mapMinX = extent.xMinimum()
mapMaxX = extent.xMaximum()
mapMinY = extent.yMinimum()
mapMaxY = extent.yMaximum()
viewportWidth = viewport.width()
viewportHeight = viewport.height()
pixelToMapUnitsX = (mapMaxX - mapMinX) / viewportWidth
pixelToMapUnitsY = (mapMaxY - mapMinY) / viewportHeight
# draw tiles
nx = int( math.ceil(viewportWidth / maxWidth) )
ny = int( math.ceil(viewportHeight / maxHeight) )
for i in range(0,nx):
for j in range(0,ny):
# tile size
left = i * maxWidth
right = min((i+1) * maxWidth, viewportWidth)
top = j * maxHeight
bottom = min((j+1) * maxHeight, viewportHeight)
width = right - left
height = bottom - top
# tile extents
mapBottomLeft = QgsPoint(mapMinX + left * pixelToMapUnitsX, mapMaxY - bottom * pixelToMapUnitsY)
mapTopRight = QgsPoint(mapMinX + right * pixelToMapUnitsX, mapMaxY - top * pixelToMapUnitsY)
bbox = "%f,%f,%f,%f" % (mapBottomLeft.x(), mapBottomLeft.y(), mapTopRight.x(), mapTopRight.y())
# render and compose image
img, message = self.maprenderer.render(bbox, (width, height))
self.messageTextEdit.append(message)
self.pixmap.loadFromData(img)
painter.drawPixmap(viewport.xMinimum() + left, viewport.yMinimum() + top, self.pixmap)
def draw(self, rendererContext):
if self.maprenderer == None:
return True
painter = rendererContext.painter()
painter.save()
maxSize = self.maprenderer.getMaxSize()
extent = rendererContext.extent()
viewport = self.setupPaintArea(rendererContext)
maxWidth = min(viewport.width(), maxSize)
maxHeight = min(viewport.height(), maxSize)
if maxWidth < viewport.width() or maxHeight < viewport.height():
# compose image from tiles with maxSize
self.drawTiled(painter, extent, viewport, maxWidth, maxHeight)
else:
self.drawUntiled(painter, extent, viewport)
painter.restore()
return True
def readXml(self, node):
# custom properties
mapfile = node.toElement().attribute("mapfile", "")
layers = str(node.toElement().attribute("layers", ""))
self.loadMapfile(mapfile, layers)
return True
def writeXml(self, node, doc):
element = node.toElement();
# write plugin layer type to project (essential to be read from project)
element.setAttribute("type", "plugin")
element.setAttribute("name", MapfileLayer.LAYER_TYPE);
# custom properties
element.setAttribute("mapfile", str(self.mapfile))
element.setAttribute("layers", str(self.layers))
return True
def reload(self, layers = (), name = None):
self.loadMapfile(self.mapfile, layers, name)
def loadMapfile(self, mapfile, layers = (), name = None):
message = ''
self.mapfile = mapfile
self.layers = layers
if self.mapfile == "":
return False
# open mapfile
self.maprenderer = MapfileRenderer(str(self.mapfile))
message = self.maprenderer.load_mapfile()
self.messageTextEdit.append(message)
mapobj = self.maprenderer.getMapObj()
if mapobj is None:
return False
if name is None:
self.setLayerName(mapobj.name)
else:
self.setLayerName(name)
# get projection as EPSG
crs = QgsCoordinateReferenceSystem()
crs.createFromProj4(self.maprenderer.getProj())
if not crs.isValid():
crs.validate()
srs = "EPSG:%d" % crs.epsg()
# always use default format for now
self.maprenderer.setup(self.layers, srs)
# set projection
self.setCrs(crs)
# TODO: set extents
# extents = self.maprenderer.getExtents()
# self.setExtent(QgsRectangle(extents[0], extents[1], extents[2], extents[3]))
if self.pixmap == None:
self.pixmap = QPixmap()
# trigger repaint
self.setCacheImage(None)
self.emit(SIGNAL("repaintRequested()"))
return True
def openMapfile(self):
mapfile = QFileDialog.getOpenFileName(None, "Mapfile", ".", "MapServer map files (*.map);;All files (*.*)","Filter list for selecting files from a dialog box")
if mapfile != "":
return self.loadMapfile(str(mapfile), ())
return False
def showProperties(self):
return False # Not supported for now - see http://hub.qgis.org/issues/1
# create and show the dialog
dlg = MapfileLayerDialog()
# show the dialog
dlg.ui.leMapfile.setText(self.mapfile)
dlg.updateInfo()
dlg.show()
# See if OK was pressed
if dlg.exec_() == 1:
mapfile = dlg.ui.leMapfile.text()
# selected layers
items = dlg.ui.listLayers.selectedItems()
layerlist = []
for item in items:
layerlist.append(str(item.text()))
layers = string.join(layerlist, ",")
self.loadMapfile(mapfile, layers)
return True
return False
class MapfileLayer(QgsPluginLayer):
LAYER_TYPE = "mapfile"
def __init__(self, messageTextEdit, mapfile="", name=None):
QgsPluginLayer.__init__(self, MapfileLayer.LAYER_TYPE,
"Mapfile Tools plugin layer")
self.setValid(True)
self.messageTextEdit = messageTextEdit
self.mapfile = mapfile
self.layers = ""
self.maprenderer = None
self.pixmap = None
if self.mapfile:
self.loadMapfile(mapfile, (), name)
def setupPaintArea(self, rendererContext):
rasterScaleFactor = rendererContext.rasterScaleFactor()
invRasterScaleFactor = 1.0 / rasterScaleFactor
# setup painter
painter = rendererContext.painter()
painter.scale(invRasterScaleFactor, invRasterScaleFactor)
# get dimensions of painter area (so it is also correctly scaled in print composer)
extent = rendererContext.extent()
mapToPixel = rendererContext.mapToPixel()
topleft = mapToPixel.transform(extent.xMinimum(), extent.yMaximum())
bottomright = mapToPixel.transform(extent.xMaximum(),
extent.yMinimum())
topleft.multiply(rasterScaleFactor)
bottomright.multiply(rasterScaleFactor)
return QgsRectangle(topleft, bottomright)
def drawUntiled(self, painter, extent, viewport):
img, message = self.maprenderer.render(
extent, (viewport.width(), viewport.height()))
self.messageTextEdit.append(message)
self.pixmap.loadFromData(img)
painter.drawPixmap(viewport.xMinimum(), viewport.yMinimum(),
self.pixmap)
def drawTiled(self, painter, extent, viewport, maxWidth, maxHeight):
# dimensions
mapMinX = extent.xMinimum()
mapMaxX = extent.xMaximum()
mapMinY = extent.yMinimum()
mapMaxY = extent.yMaximum()
viewportWidth = viewport.width()
viewportHeight = viewport.height()
pixelToMapUnitsX = (mapMaxX - mapMinX) / viewportWidth
pixelToMapUnitsY = (mapMaxY - mapMinY) / viewportHeight
# draw tiles
nx = int(math.ceil(viewportWidth / maxWidth))
ny = int(math.ceil(viewportHeight / maxHeight))
for i in range(0, nx):
for j in range(0, ny):
# tile size
left = i * maxWidth
right = min((i + 1) * maxWidth, viewportWidth)
top = j * maxHeight
bottom = min((j + 1) * maxHeight, viewportHeight)
width = right - left
height = bottom - top
# tile extents
mapBottomLeft = QgsPoint(mapMinX + left * pixelToMapUnitsX,
mapMaxY - bottom * pixelToMapUnitsY)
mapTopRight = QgsPoint(mapMinX + right * pixelToMapUnitsX,
mapMaxY - top * pixelToMapUnitsY)
bbox = "%f,%f,%f,%f" % (mapBottomLeft.x(), mapBottomLeft.y(),
mapTopRight.x(), mapTopRight.y())
# render and compose image
img, message = self.maprenderer.render(bbox, (width, height))
self.messageTextEdit.append(message)
self.pixmap.loadFromData(img)
painter.drawPixmap(viewport.xMinimum() + left,
viewport.yMinimum() + top, self.pixmap)
def draw(self, rendererContext):
if self.maprenderer == None:
return True
painter = rendererContext.painter()
painter.save()
maxSize = self.maprenderer.getMaxSize()
extent = rendererContext.extent()
viewport = self.setupPaintArea(rendererContext)
maxWidth = min(viewport.width(), maxSize)
maxHeight = min(viewport.height(), maxSize)
if maxWidth < viewport.width() or maxHeight < viewport.height():
# compose image from tiles with maxSize
self.drawTiled(painter, extent, viewport, maxWidth, maxHeight)
else:
self.drawUntiled(painter, extent, viewport)
painter.restore()
return True
def readXml(self, node):
# custom properties
mapfile = node.toElement().attribute("mapfile", "")
layers = str(node.toElement().attribute("layers", ""))
self.loadMapfile(mapfile, layers)
return True
def writeXml(self, node, doc):
element = node.toElement()
# write plugin layer type to project (essential to be read from project)
element.setAttribute("type", "plugin")
element.setAttribute("name", MapfileLayer.LAYER_TYPE)
# custom properties
element.setAttribute("mapfile", str(self.mapfile))
element.setAttribute("layers", str(self.layers))
return True
def reload(self, layers=(), name=None):
self.loadMapfile(self.mapfile, layers, name)
def loadMapfile(self, mapfile, layers=(), name=None):
message = ''
self.mapfile = mapfile
self.layers = layers
if self.mapfile == "":
return False
# open mapfile
self.maprenderer = MapfileRenderer(str(self.mapfile))
message = self.maprenderer.load_mapfile()
self.messageTextEdit.append(message)
mapobj = self.maprenderer.getMapObj()
if mapobj is None:
return False
if name is None:
self.setLayerName(mapobj.name)
else:
self.setLayerName(name)
# get projection as EPSG
crs = QgsCoordinateReferenceSystem()
crs.createFromProj4(self.maprenderer.getProj())
if not crs.isValid():
crs.validate()
srs = "EPSG:%d" % crs.epsg()
# always use default format for now
self.maprenderer.setup(self.layers, srs)
# set projection
self.setCrs(crs)
# TODO: set extents
# extents = self.maprenderer.getExtents()
# self.setExtent(QgsRectangle(extents[0], extents[1], extents[2], extents[3]))
if self.pixmap == None:
self.pixmap = QPixmap()
# trigger repaint
self.setCacheImage(None)
self.emit(SIGNAL("repaintRequested()"))
return True
def openMapfile(self):
mapfile = QFileDialog.getOpenFileName(
None, "Mapfile", ".",
"MapServer map files (*.map);;All files (*.*)",
"Filter list for selecting files from a dialog box")
if mapfile != "":
return self.loadMapfile(str(mapfile), ())
return False
def showProperties(self):
return False # Not supported for now - see http://hub.qgis.org/issues/1
# create and show the dialog
dlg = MapfileLayerDialog()
# show the dialog
dlg.ui.leMapfile.setText(self.mapfile)
dlg.updateInfo()
dlg.show()
# See if OK was pressed
if dlg.exec_() == 1:
mapfile = dlg.ui.leMapfile.text()
# selected layers
items = dlg.ui.listLayers.selectedItems()
layerlist = []
for item in items:
layerlist.append(str(item.text()))
layers = string.join(layerlist, ",")
self.loadMapfile(mapfile, layers)
return True
return False