diff -r 0f41c1e2c121 -r 6dadc1690284 svghmi/ui.py --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/svghmi/ui.py Thu Mar 25 13:07:52 2021 +0100 @@ -0,0 +1,305 @@ +#!/usr/bin/env python +# -*- coding: utf-8 -*- + +# This file is part of Beremiz +# Copyright (C) 2021: Edouard TISSERANT +# +# See COPYING file for copyrights details. + +from __future__ import absolute_import +import os +import hashlib +import weakref + +import wx + +from IDEFrame import EncodeFileSystemPath, DecodeFileSystemPath +from docutil import get_inkscape_path + +from util.ProcessLogger import ProcessLogger + +def SVGHMIEditorUpdater(ref): + def SVGHMIEditorUpdate(): + o = ref() + if o is not None: + wx.CallAfter(o.MakeTree) + return SVGHMIEditorUpdate + +class HMITreeSelector(wx.TreeCtrl): + def __init__(self, parent): + global on_hmitree_update + wx.TreeCtrl.__init__(self, parent, style=( + wx.TR_MULTIPLE | + wx.TR_HAS_BUTTONS | + wx.SUNKEN_BORDER | + wx.TR_LINES_AT_ROOT)) + + on_hmitree_update = SVGHMIEditorUpdater(weakref.ref(self)) + self.MakeTree() + + def _recurseTree(self, current_hmitree_root, current_tc_root): + for c in current_hmitree_root.children: + if hasattr(c, "children"): + display_name = ('{} (class={})'.format(c.name, c.hmiclass)) \ + if c.hmiclass is not None else c.name + tc_child = self.AppendItem(current_tc_root, display_name) + self.SetPyData(tc_child, None) # TODO + + self._recurseTree(c,tc_child) + else: + display_name = '{} {}'.format(c.nodetype[4:], c.name) + tc_child = self.AppendItem(current_tc_root, display_name) + self.SetPyData(tc_child, None) # TODO + + def MakeTree(self, hmi_tree_root=None): + + self.Freeze() + + self.root = None + self.DeleteAllItems() + + root_display_name = _("Please build to see HMI Tree") \ + if hmi_tree_root is None else "HMI" + self.root = self.AddRoot(root_display_name) + self.SetPyData(self.root, None) + + if hmi_tree_root is not None: + self._recurseTree(hmi_tree_root, self.root) + self.Expand(self.root) + + self.Thaw() + +class WidgetPicker(wx.TreeCtrl): + def __init__(self, parent, initialdir=None): + wx.TreeCtrl.__init__(self, parent, style=( + wx.TR_MULTIPLE | + wx.TR_HAS_BUTTONS | + wx.SUNKEN_BORDER | + wx.TR_LINES_AT_ROOT)) + + self.MakeTree(initialdir) + + def _recurseTree(self, current_dir, current_tc_root, dirlist): + """ + recurse through subdirectories, but creates tree nodes + only when (sub)directory conbtains .svg file + """ + res = [] + for f in sorted(os.listdir(current_dir)): + p = os.path.join(current_dir,f) + if os.path.isdir(p): + + r = self._recurseTree(p, current_tc_root, dirlist + [f]) + if len(r) > 0 : + res = r + dirlist = [] + current_tc_root = res.pop() + + elif os.path.splitext(f)[1].upper() == ".SVG": + if len(dirlist) > 0 : + res = [] + for d in dirlist: + current_tc_root = self.AppendItem(current_tc_root, d) + res.append(current_tc_root) + self.SetPyData(current_tc_root, None) + dirlist = [] + res.pop() + tc_child = self.AppendItem(current_tc_root, f) + self.SetPyData(tc_child, p) + return res + + def MakeTree(self, lib_dir = None): + + self.Freeze() + + self.root = None + self.DeleteAllItems() + + root_display_name = _("Please select widget library directory") \ + if lib_dir is None else os.path.basename(lib_dir) + self.root = self.AddRoot(root_display_name) + self.SetPyData(self.root, None) + + if lib_dir is not None: + self._recurseTree(lib_dir, self.root, []) + self.Expand(self.root) + + self.Thaw() + +_conf_key = "SVGHMIWidgetLib" +_preview_height = 200 +class WidgetLibBrowser(wx.Panel): + def __init__(self, parent, id=wx.ID_ANY, pos=wx.DefaultPosition, + size=wx.DefaultSize): + + wx.Panel.__init__(self, parent, id, pos, size) + + self.bmp = None + self.msg = None + self.hmitree_node = None + self.selected_SVG = None + + self.Config = wx.ConfigBase.Get() + self.libdir = self.RecallLibDir() + + sizer = wx.FlexGridSizer(cols=1, hgap=0, rows=3, vgap=0) + sizer.AddGrowableCol(0) + sizer.AddGrowableRow(1) + self.libbutton = wx.Button(self, -1, _("Select SVG widget library")) + self.widgetpicker = WidgetPicker(self, self.libdir) + self.preview = wx.Panel(self, size=(-1, _preview_height + 10)) #, style=wx.SIMPLE_BORDER) + #self.preview.SetBackgroundColour(wx.WHITE) + sizer.AddWindow(self.libbutton, flag=wx.GROW) + sizer.AddWindow(self.widgetpicker, flag=wx.GROW) + sizer.AddWindow(self.preview, flag=wx.GROW) + sizer.Layout() + self.SetAutoLayout(True) + self.SetSizer(sizer) + sizer.Fit(self) + self.Bind(wx.EVT_BUTTON, self.OnSelectLibDir, self.libbutton) + self.preview.Bind(wx.EVT_PAINT, self.OnPaint) + + self.Bind(wx.EVT_TREE_SEL_CHANGED, self.OnWidgetSelection, self.widgetpicker) + + self.msg = _("Drag selected Widget from here to Inkscape") + + def RecallLibDir(self): + conf = self.Config.Read(_conf_key) + if len(conf) == 0: + return None + else: + return DecodeFileSystemPath(conf) + + def RememberLibDir(self, path): + self.Config.Write(_conf_key, + EncodeFileSystemPath(path)) + self.Config.Flush() + + def DrawPreview(self): + """ + Refresh preview panel + """ + # Init preview panel paint device context + dc = wx.PaintDC(self.preview) + dc.Clear() + + if self.bmp: + # Get Preview panel size + sz = self.preview.GetClientSize() + w = self.bmp.GetWidth() + dc.DrawBitmap(self.bmp, (sz.width - w)/2, 5) + + if self.msg: + dc.SetFont(self.GetFont()) + dc.DrawText(self.msg, 25,25) + + + def OnSelectLibDir(self, event): + defaultpath = self.RecallLibDir() + if defaultpath == None: + defaultpath = os.path.expanduser("~") + + dialog = wx.DirDialog(self, _("Choose a widget library"), defaultpath, + style=wx.DEFAULT_DIALOG_STYLE | wx.RESIZE_BORDER) + + if dialog.ShowModal() == wx.ID_OK: + self.libdir = dialog.GetPath() + self.RememberLibDir(self.libdir) + self.widgetpicker.MakeTree(self.libdir) + + dialog.Destroy() + + def OnPaint(self, event): + """ + Called when Preview panel needs to be redrawn + @param event: wx.PaintEvent + """ + self.DrawPreview() + event.Skip() + + def GenThumbnail(self, svgpath, thumbpath): + inkpath = get_inkscape_path() + if inkpath is None: + self.msg = _("Inkscape is not installed.") + return False + # TODO: spawn a thread, to decouple thumbnail gen + status, result, _err_result = ProcessLogger( + None, + '"' + inkpath + '" "' + svgpath + '" -e "' + thumbpath + + '" -D -h ' + str(_preview_height)).spin() + if status != 0: + self.msg = _("Inkscape couldn't generate thumbnail.") + return False + return True + + def OnWidgetSelection(self, event): + """ + Called when tree item is selected + @param event: wx.TreeEvent + """ + item_pydata = self.widgetpicker.GetPyData(event.GetItem()) + if item_pydata is not None: + svgpath = item_pydata + dname = os.path.dirname(svgpath) + fname = os.path.basename(svgpath) + hasher = hashlib.new('md5') + with open(svgpath, 'rb') as afile: + while True: + buf = afile.read(65536) + if len(buf) > 0: + hasher.update(buf) + else: + break + digest = hasher.hexdigest() + thumbfname = os.path.splitext(fname)[0]+"_"+digest+".png" + thumbdir = os.path.join(dname, ".svghmithumbs") + thumbpath = os.path.join(thumbdir, thumbfname) + + self.msg = None + have_thumb = os.path.exists(thumbpath) + + if not have_thumb: + try: + if not os.path.exists(thumbdir): + os.mkdir(thumbdir) + except IOError: + self.msg = _("Widget library must be writable") + else: + have_thumb = self.GenThumbnail(svgpath, thumbpath) + + self.bmp = wx.Bitmap(thumbpath) if have_thumb else None + + self.selected_SVG = svgpath if have_thumb else None + self.ValidateWidget() + + self.Refresh() + event.Skip() + + def OnHMITreeNodeSelection(self, hmitree_node): + self.hmitree_node = hmitree_node + self.ValidateWidget() + self.Refresh() + + def ValidateWidget(self): + if self.selected_SVG is not None: + if self.hmitree_node is not None: + pass + # XXX TODO: + # - check SVG is valid for selected HMI tree item + # - prepare for D'n'D + + +class SVGHMI_UI(wx.SplitterWindow): + + def __init__(self, parent, register_for_HMI_tree_updates): + wx.SplitterWindow.__init__(self, parent, + style=wx.SUNKEN_BORDER | wx.SP_3D) + + self.SelectionTree = HMITreeSelector(self) + self.Staging = WidgetLibBrowser(self) + self.SplitVertically(self.SelectionTree, self.Staging, 300) + register_for_HMI_tree_updates(weakref.ref(self)) + + def HMITreeUpdate(self, hmi_tree_root): + self.SelectionTree.MakeTree(hmi_tree_root) +