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# Copyright (c) 2001, 2002, 2003 by Intevation GmbH |
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# Authors: |
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# Jonathan Coles <[email protected]> |
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# |
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# This program is free software under the GPL (>=v2) |
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# Read the file COPYING coming with Thuban for details. |
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|
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__version__ = "$Revision$" |
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|
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from Thuban import _ |
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|
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import resource |
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|
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from wxPython.wx import * |
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|
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from Thuban.Model.layer import Layer |
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from Thuban.Model.map import Map |
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from Thuban.Model.classification import ClassGroup |
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|
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from Thuban.Model.messages import \ |
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MAP_STACKING_CHANGED, MAP_LAYERS_ADDED, MAP_LAYERS_REMOVED, LAYER_CHANGED,\ |
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LAYER_VISIBILITY_CHANGED, TITLE_CHANGED |
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|
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from Thuban.UI.messages import SCALE_CHANGED |
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|
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from Thuban.UI.classifier import ClassDataPreviewer |
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from Thuban.UI.dock import DockPanel |
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from Thuban.UI.scalebar import ScaleBar |
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|
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from Thuban.Lib.connector import ConnectorError |
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|
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ID_LEGEND_RAISE = 4001 |
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ID_LEGEND_LOWER = 4002 |
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ID_LEGEND_TREE = 4003 |
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ID_LEGEND_PROPS = 4004 |
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ID_LEGEND_SHOWLAYER = 4005 |
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ID_LEGEND_HIDELAYER = 4006 |
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|
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BMP_SIZE_W = 30 |
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BMP_SIZE_H = 15 |
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|
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RAISE_BMP = "raise_layer" |
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LOWER_BMP = "lower_layer" |
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SHOW_BMP = "show_layer" |
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HIDE_BMP = "hide_layer" |
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PROPS_BMP = "layer_properties" |
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|
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|
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class LegendPanel(DockPanel): |
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|
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def __init__(self, parent, map, mainWindow): |
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DockPanel.__init__(self, parent, -1) |
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|
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self.mainWindow = mainWindow |
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self.parent = parent |
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|
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self.buttons = [] |
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|
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panelBox = wxBoxSizer(wxVERTICAL) |
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|
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self.toolBar = wxToolBar(self, -1) |
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self.toolBar.SetToolBitmapSize(wxSize(24, 24)) |
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|
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bmp = resource.GetBitmapResource(RAISE_BMP, wxBITMAP_TYPE_XPM) |
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self.toolBar.AddTool(ID_LEGEND_RAISE, bmp, |
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shortHelpString=_("Raise Layer")) |
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|
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bmp = resource.GetBitmapResource(LOWER_BMP, wxBITMAP_TYPE_XPM) |
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self.toolBar.AddTool(ID_LEGEND_LOWER, bmp, |
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shortHelpString=_("Lower Layer")) |
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|
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bmp = resource.GetBitmapResource(SHOW_BMP, wxBITMAP_TYPE_XPM) |
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self.toolBar.AddTool(ID_LEGEND_SHOWLAYER, bmp, |
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shortHelpString=_("Show Layer")) |
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|
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bmp = resource.GetBitmapResource(HIDE_BMP, wxBITMAP_TYPE_XPM) |
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self.toolBar.AddTool(ID_LEGEND_HIDELAYER, bmp, |
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shortHelpString=_("Hide Layer")) |
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|
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bmp = resource.GetBitmapResource(PROPS_BMP, wxBITMAP_TYPE_XPM) |
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self.toolBar.AddTool(ID_LEGEND_PROPS, bmp, |
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shortHelpString=_("Edit Layer Properties")) |
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|
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self.toolBar.Realize() |
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panelBox.Add(self.toolBar, 0, wxGROW, 0) |
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|
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EVT_TOOL(self, ID_LEGEND_RAISE, self._OnMoveUp) |
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EVT_TOOL(self, ID_LEGEND_LOWER, self._OnMoveDown) |
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EVT_TOOL(self, ID_LEGEND_PROPS, self._OnProperties) |
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EVT_TOOL(self, ID_LEGEND_SHOWLAYER, self._OnShowLayer) |
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EVT_TOOL(self, ID_LEGEND_HIDELAYER, self._OnHideLayer) |
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|
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self.tree = LegendTree(self, ID_LEGEND_TREE, map, mainWindow) |
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|
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panelBox.Add(self.tree, 1, wxGROW, 0) |
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|
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self.scalebarbitmap = ScaleBarBitmap(self, map, mainWindow) |
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panelBox.Add(self.scalebarbitmap, 0, wxGROW, 0) |
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|
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self.SetAutoLayout(True) |
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self.SetSizer(panelBox) |
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panelBox.SetSizeHints(self) |
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|
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|
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self.panelBox = panelBox |
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|
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self.__EnableButtons(False) |
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|
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self.Create() |
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|
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EVT_CLOSE(self, self._OnClose) |
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|
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|
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def GetMap(self): |
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return self.tree.GetMap() |
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|
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def SetMap(self, map): |
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self.tree.SetMap(map) |
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self.scalebarbitmap.SetCanvas(self.mainWindow.canvas) |
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|
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def DoOnSelChanged(self, layer, group): |
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|
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ok = isinstance(layer, Layer) |
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self.__EnableButtons(ok) |
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|
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self.mainWindow.SelectLayer(layer) |
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|
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def DoOnProperties(self): |
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list = self.tree.GetSelectedHierarchy() |
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|
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ok = isinstance(list[0], Layer) |
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if ok: |
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self.mainWindow.OpenLayerProperties(list[0], list[1]) |
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|
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def Destroy(self): |
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self.__Close() |
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|
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def _OnProperties(self, event): |
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self.DoOnProperties() |
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|
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def _OnMoveUp(self, event): |
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self.tree.MoveCurrentItemUp() |
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|
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def _OnMoveDown(self, event): |
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self.tree.MoveCurrentItemDown() |
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|
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def _OnShowLayer(self, event): |
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self.tree.DoOnShowLayer() |
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pass |
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|
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#def Close(self, force = False): |
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#DockPanel.Close(self, force) |
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|
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def _OnClose(self, event): |
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self.__Close() |
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|
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def _OnHideLayer(self, event): |
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self.tree.DoOnHideLayer() |
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pass |
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|
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def __EnableButtons(self, on): |
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self.toolBar.EnableTool(ID_LEGEND_RAISE, on) |
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self.toolBar.EnableTool(ID_LEGEND_LOWER, on) |
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self.toolBar.EnableTool(ID_LEGEND_SHOWLAYER, on) |
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self.toolBar.EnableTool(ID_LEGEND_HIDELAYER, on) |
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self.toolBar.EnableTool(ID_LEGEND_PROPS, on) |
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|
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def __Close(self): |
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self.tree.Close() |
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|
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class LegendTree(wxTreeCtrl): |
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|
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def __init__(self, parent, id, map, mainWindow): |
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wxTreeCtrl.__init__(self, parent, id, |
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style = wxTR_DEFAULT_STYLE | wxTR_HIDE_ROOT, |
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size = (200, 200)) |
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|
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self.mainWindow = mainWindow |
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self.map = None |
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self.parent = parent |
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self.layer2id = {} |
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|
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self.image_list = None |
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self.emptyImageIndex = 0 |
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|
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self.previewer = ClassDataPreviewer() |
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|
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EVT_TREE_ITEM_ACTIVATED(self, ID_LEGEND_TREE, self._OnItemActivated) |
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EVT_TREE_SEL_CHANGED(self, ID_LEGEND_TREE, self._OnSelChanged) |
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|
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EVT_CLOSE(self, self._OnClose) |
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|
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self.SetMap(map) |
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|
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def _OnClose(self, event): |
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self.SetMap(None) |
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|
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def GetMap(self): |
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return self.map |
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|
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def SetMap(self, map): |
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|
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sub_list = [(MAP_STACKING_CHANGED, self._OnMsgMapStackingChanged), |
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(MAP_LAYERS_ADDED, self._OnMsgMapLayersAddedRemoved), |
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(MAP_LAYERS_REMOVED, self._OnMsgMapLayersAddedRemoved)] |
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|
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if self.map is not None: |
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for msg, func in sub_list: self.map.Unsubscribe(msg, func) |
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#self.mainWindow.application.Unsubscribe(SESSION_REPLACED, |
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#self._OnMsgMapsChanged) |
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#try: |
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#self.mainWindow.application.session.Unsubscribe(MAPS_CHANGED, |
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#self._OnMsgMapsChanged) |
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#except ConnectorError: |
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#pass |
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self.__DeleteAllItems() |
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|
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self.map = map |
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|
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if self.map is not None: |
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for msg, func in sub_list: self.map.Subscribe(msg, func) |
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#self.mainWindow.application.session.Subscribe(MAPS_CHANGED, |
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#self._OnMsgMapsChanged) |
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#self.mainWindow.application.Subscribe(SESSION_REPLACED, |
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#self._OnMsgMapsChanged) |
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self.__FillTree(self.map) |
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|
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def MoveCurrentItemUp(self): |
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layer, group = self.GetSelectedHierarchy() |
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|
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if layer is not None: |
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self.map.RaiseLayer(layer) |
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else: |
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assert False, "Shouldn't be allowed." |
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pass |
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|
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def MoveCurrentItemDown(self): |
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layer, group = self.GetSelectedHierarchy() |
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|
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if layer is not None: |
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self.map.LowerLayer(layer) |
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else: |
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assert False, "Shouldn't be allowed." |
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pass |
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|
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def OnCompareItems(self, item1, item2): |
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|
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data1 = self.GetPyData(item1) |
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data2 = self.GetPyData(item2) |
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|
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if isinstance(data1, Layer): |
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layers = self.map.Layers() |
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return layers.index(data2) - layers.index(data1) |
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else: |
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return wxTreeCtrl.OnCompareItems(self, item1, item2) |
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|
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def DoOnShowLayer(self): |
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#self.__ShowHideLayer(True) |
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layer, group = self.GetSelectedHierarchy() |
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layer.SetVisible(True) |
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|
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def DoOnHideLayer(self): |
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#self.__ShowHideLayer(False) |
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layer, group = self.GetSelectedHierarchy() |
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layer.SetVisible(False) |
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|
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def Sort(self): |
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self.SortChildren(self.GetRootItem()) |
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|
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def GetSelectedHierarchy(self): |
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id = self.GetSelection() |
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|
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if not id.IsOk(): |
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return (None, None) |
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|
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layer = self.GetPyData(id) |
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group = None |
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|
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if isinstance(layer, ClassGroup): |
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id = self.GetItemParent(id) |
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assert id.IsOk() |
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group = layer |
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layer = self.GetPyData(id) |
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|
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return (layer, group) |
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|
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def _OnMsgMapsChanged(self): |
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#print self.map is self.mainWindow.Map() |
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self.SetMap(self.mainWindow.Map()) |
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|
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def _OnSelChanged(self, event): |
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self.__UpdateSelection() |
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|
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def _OnItemActivated(self, event): |
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self.parent.DoOnProperties() |
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|
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def _OnMsgLayerChanged(self, layer): |
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assert isinstance(layer, Layer) |
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|
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id = self.layer2id[layer] |
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assert id.IsOk() |
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|
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# XXX: yikes! this is so bad, we should be doing what is |
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# commented out, but there is a problem with keeping |
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# track of the images in the image list when we replace |
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# a layer. it ends up causing a seg fault. |
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self.__FillTree(self.map) |
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self.__UpdateSelection() |
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#self.__FillTreeLayer(id) |
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|
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def _OnMsgMapStackingChanged(self, *args): |
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self.Sort() |
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id = self.GetSelection() |
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|
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if id.IsOk(): |
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self.EnsureVisible(id) |
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self.__UpdateSelection() |
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|
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def _OnMsgMapLayersAddedRemoved(self, map): |
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assert map is self.map |
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|
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self.__FillTree(self.map) |
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self.__UpdateSelection() |
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|
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def _OnMsgLayerVisibilityChanged(self, layer): |
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assert isinstance(layer, Layer) |
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|
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self.__ShowHideLayer(layer) |
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self.__UpdateSelection() |
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|
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def _OnMsgLayerTitleChanged(self, layer): |
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|
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id = self.layer2id[layer] |
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if id.IsOk(): |
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self.SetItemText(id, layer.Title()) |
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self.__UpdateSelection() |
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|
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def __UpdateSelection(self): |
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layer, group = self.GetSelectedHierarchy() |
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self.parent.DoOnSelChanged(layer, group) |
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|
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def __FillTree(self, map): |
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|
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self.Freeze() |
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|
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self.__DeleteAllItems() |
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|
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if map.HasLayers(): |
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|
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self.image_list = wxImageList(BMP_SIZE_W, BMP_SIZE_H, False, 0) |
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|
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bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H) |
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dc = wxMemoryDC() |
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dc.SelectObject(bmp) |
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dc.SetBrush(wxBLACK_BRUSH) |
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dc.Clear() |
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dc.SelectObject(wxNullBitmap) |
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|
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self.emptyImageIndex = \ |
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self.image_list.AddWithColourMask(bmp, wxColour(0, 0, 0)) |
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|
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self.AssignImageList(self.image_list) |
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|
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root = self.AddRoot("") |
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|
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for l in map.Layers(): |
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id = self.PrependItem(root, l.Title()) |
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l.Subscribe(LAYER_CHANGED, self._OnMsgLayerChanged) |
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l.Subscribe(LAYER_VISIBILITY_CHANGED, |
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self._OnMsgLayerVisibilityChanged) |
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l.Subscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged) |
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self.SetPyData(id, l) |
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self.__SetVisibilityStyle(l.Visible(), id) |
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|
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self.layer2id[l] = id |
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|
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self.__FillTreeLayer(id) |
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self.Expand(id) |
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|
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self.Thaw() |
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|
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def __FillTreeLayer(self, pid): |
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layer = self.GetPyData(pid) |
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|
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self.Freeze() |
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|
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self.DeleteChildren(pid) |
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|
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clazz = layer.GetClassification() |
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|
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shapeType = layer.ShapeType() |
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|
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show = layer.Visible() |
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for g in clazz: |
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if g.IsVisible(): |
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id = self.AppendItem(pid, g.GetDisplayText()) |
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self.SetPyData(id, g) |
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self.__SetVisibilityStyle(show, id) |
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|
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bmp = self.__BuildGroupImage(g, shapeType) |
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|
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if bmp is None: |
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self.SetItemImage(id, self.emptyImageIndex) |
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else: |
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i = self.image_list.Add(bmp) |
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self.SetItemImage(id, i) |
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|
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self.Thaw() |
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|
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def __BuildGroupImage(self, group, shapeType): |
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|
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bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H) |
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#brush = wxBrush(Color2wxColour(item[1]), wxSOLID) |
| 414 |
dc = wxMemoryDC() |
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dc.SelectObject(bmp) |
| 416 |
dc.Clear() |
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|
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self.previewer.Draw(dc, None, group.GetProperties(), shapeType) |
| 419 |
|
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return bmp |
| 421 |
|
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def __DeleteAllItems(self): |
| 423 |
|
| 424 |
while len(self.layer2id) > 0: |
| 425 |
layer, id = self.layer2id.popitem() |
| 426 |
layer.Unsubscribe(LAYER_CHANGED, |
| 427 |
self._OnMsgLayerChanged) |
| 428 |
layer.Unsubscribe(LAYER_VISIBILITY_CHANGED, |
| 429 |
self._OnMsgLayerVisibilityChanged) |
| 430 |
layer.Unsubscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged) |
| 431 |
|
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self.DeleteAllItems() |
| 433 |
|
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def __SetVisibilityStyle(self, visible, id): |
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font = self.GetItemFont(id) |
| 436 |
|
| 437 |
if visible: |
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font.SetStyle(wxNORMAL) |
| 439 |
color = wxBLACK |
| 440 |
else: |
| 441 |
font.SetStyle(wxITALIC) |
| 442 |
color = wxLIGHT_GREY |
| 443 |
|
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self.SetItemTextColour(id, color) |
| 445 |
self.SetItemFont(id, font) |
| 446 |
|
| 447 |
def __ShowHideLayer(self, layer): |
| 448 |
parent = self.layer2id[layer] |
| 449 |
assert parent.IsOk() |
| 450 |
|
| 451 |
visible = layer.Visible() |
| 452 |
|
| 453 |
self.__SetVisibilityStyle(visible, parent) |
| 454 |
|
| 455 |
id, cookie = self.GetFirstChild(parent, 123) |
| 456 |
|
| 457 |
while id.IsOk(): |
| 458 |
self.__SetVisibilityStyle(visible, id) |
| 459 |
id, cookie = self.GetNextChild(parent, cookie) |
| 460 |
|
| 461 |
class ScaleBarBitmap(wxBoxSizer): |
| 462 |
|
| 463 |
def __init__(self, parent, map, mainWindow): |
| 464 |
# While the width is fixed, get the height _now_. |
| 465 |
dc = wxMemoryDC() |
| 466 |
textwidth, textheight = dc.GetTextExtent("%d"%0) |
| 467 |
self.width = 200 |
| 468 |
self.height = textheight + 3*2 + 8 |
| 469 |
|
| 470 |
wxBoxSizer.__init__(self, wxVERTICAL) |
| 471 |
bmp=wxEmptyBitmap(self.width, self.height) |
| 472 |
self.scalebarBitmap = wxStaticBitmap(parent, -1, bmp) |
| 473 |
self.Add(self.scalebarBitmap, 0, wxALIGN_CENTER|wxLEFT|wxTOP|wxRIGHT, 1) |
| 474 |
|
| 475 |
self.mainWindow = mainWindow |
| 476 |
self.parent = parent |
| 477 |
self.canvas = None |
| 478 |
self.SetCanvas(self.mainWindow.canvas) |
| 479 |
|
| 480 |
def SetCanvas(self, canvas): |
| 481 |
sub_list = [(SCALE_CHANGED, self._OnMsgScaleChanged)] |
| 482 |
|
| 483 |
if self.canvas is not None: |
| 484 |
for msg, func in sub_list: self.canvas.Unsubscribe(msg, func) |
| 485 |
|
| 486 |
self.canvas = canvas |
| 487 |
self.scalebar = ScaleBar(canvas.map) |
| 488 |
|
| 489 |
if self.canvas is not None: |
| 490 |
for msg, func in sub_list: self.canvas.Subscribe(msg, func) |
| 491 |
self.__SetScale(self.canvas.scale) |
| 492 |
|
| 493 |
def _OnMsgScaleChanged(self, scale): |
| 494 |
self.__SetScale(scale) |
| 495 |
|
| 496 |
def __SetScale(self, scale): |
| 497 |
bmp = wxEmptyBitmap(self.width, self.height) |
| 498 |
dc = wxMemoryDC() |
| 499 |
dc.SelectObject(bmp) |
| 500 |
dc.Clear() |
| 501 |
|
| 502 |
self.scalebar.DrawScalebar(scale, dc) |
| 503 |
|
| 504 |
self.scalebarBitmap.SetBitmap(bmp) |
| 505 |
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