#!/usr/bin/env python3
#
# GuiCanvasInterface.py
# Copyright (c) 2018, 2019 Lucio Andrés Illanes Albornoz <lucio@lucioillanes.de>
#

try:
    from ImgurApiKey import ImgurApiKey
    haveImgurApiKey = True
except ImportError:
    haveImgurApiKey = False

try:
    import base64, json, requests, urllib.request
    haveUrllib = True
except ImportError:
    haveUrllib = False

from ToolCircle import ToolCircle
from ToolFill import ToolFill
from ToolLine import ToolLine
from ToolRect import ToolRect
from ToolSelectClone import ToolSelectClone
from ToolSelectMove import ToolSelectMove
from ToolText import ToolText

from GuiCanvasColours import Colours
from GuiCanvasInterfaceAbout import GuiCanvasInterfaceAbout
from GuiFrame import NID_MENU_SEP, NID_TOOLBAR_HSEP
import io, os, sys, wx

class GuiCanvasInterface():
    # {{{ _import(self, f, newDirty, pathName)
    def _import(self, f, newDirty, pathName):
        self.parentCanvas.SetCursor(wx.Cursor(wx.CURSOR_WAIT))
        rc, error, newMap, newPathName, newSize = f(pathName)
        if rc:
            self.parentCanvas.dirty = newDirty
            self.parentCanvas.update(newSize, False, newMap)
            self.canvasPathName = newPathName
            self.update(dirty=self.parentCanvas.dirty, pathName=self.canvasPathName, undoLevel=-1)
            self.parentCanvas.canvas.journal.resetCursor()
            self.parentCanvas.canvas.journal.resetUndo()
        else:
            with wx.MessageDialog(self.parentCanvas, "Error: {}".format(error), "", wx.OK | wx.OK_DEFAULT) as dialog:
                dialogChoice = dialog.ShowModal()
        self.parentCanvas.SetCursor(wx.Cursor(wx.NullCursor))
        return rc
    # }}}
    # {{{ _importFile(self, f, newDirty, wildcard)
    def _importFile(self, f, newDirty, wildcard):
        with wx.FileDialog(self.parentCanvas, "Open", os.getcwd(), "", wildcard, wx.FD_OPEN) as dialog:
            if dialog.ShowModal() == wx.ID_CANCEL:
                return False
            elif self._promptSaveChanges():
                return self._import(f, newDirty, dialog.GetPath())
    # }}}
    # {{{ _initColourBitmaps(self)
    def _initColourBitmaps(self):
        for numColour in range(len(self.canvasColour.attrList)):
            if numColour < len(Colours):
                toolBitmapColour = Colours[numColour][0:4]
                toolBitmap = wx.Bitmap((16, 16))
                toolBitmapDc = wx.MemoryDC(); toolBitmapDc.SelectObject(toolBitmap);
                toolBitmapBrush = wx.Brush(wx.Colour(toolBitmapColour), wx.BRUSHSTYLE_SOLID)
                toolBitmapDc.SetBrush(toolBitmapBrush)
                toolBitmapDc.SetBackground(toolBitmapBrush)
                toolBitmapDc.SetPen(wx.Pen(wx.Colour(toolBitmapColour), 1))
                toolBitmapDc.DrawRectangle(0, 0, 16, 16)
            self.canvasColour.attrList[numColour]["icon"] = ["", None, toolBitmap]
        toolBitmapColours = ((0, 0, 0, 255), (255, 255, 255, 255))
        toolBitmap = wx.Bitmap((16, 16))
        toolBitmapDc = wx.MemoryDC(); toolBitmapDc.SelectObject(toolBitmap);
        toolBitmapBrush = [wx.Brush(wx.Colour(c), wx.BRUSHSTYLE_SOLID) for c in toolBitmapColours]
        toolBitmapDc.SetBrush(toolBitmapBrush[1])
        toolBitmapDc.SetBackground(toolBitmapBrush[1])
        toolBitmapDc.SetPen(wx.Pen(wx.Colour(toolBitmapColours[1]), 1))
        toolBitmapDc.DrawRectangle(0, 0, 8, 8)
        toolBitmapDc.DrawRectangle(8, 8, 16, 16)
        self.canvasColourAlpha.attrList[0]["icon"] = ["", None, toolBitmap]
    # }}}
    # {{{ _promptSaveChanges(self)
    def _promptSaveChanges(self):
        if self.parentCanvas.dirty:
           with wx.MessageDialog(self.parentCanvas,                                                                                    \
                        "Do you want to save changes to {}?".format(self.canvasPathName if self.canvasPathName != None else "(Untitled)"),  \
                        "", wx.CANCEL|wx.CANCEL_DEFAULT|wx.ICON_QUESTION|wx.YES_NO) as dialog:
                dialogChoice = dialog.ShowModal()
                if dialogChoice == wx.ID_CANCEL:
                    return False
                elif dialogChoice == wx.ID_NO:
                    return True
                elif dialogChoice == wx.ID_YES:
                    return self.canvasSaveAs(None) if self.canvasPathName == None else self.canvasSave(None)
                else:
                    return False
        else:
            return True
    # }}}

    # {{{ CommandDecoratorOuter(targetObject)
    def CommandDecorator(caption, label, icon, accel, initialState):
        def CommandDecoratorOuter(targetObject):
            if callable(targetObject):
                if not hasattr(targetObject, "attrDict"):
                    setattr(targetObject, "attrDict", [])
                targetObject.attrDict = {"caption": caption, "label": label, "icon": icon, "accel": accel, "initialState": initialState, "id": None}
                return targetObject
        return CommandDecoratorOuter
    # }}}
    # {{{ CommandListDecoratorOuter(targetObject)
    def CommandListDecorator(idx, caption, label, icon, accel, initialState):
        def CommandListDecoratorOuter(targetObject):
            if callable(targetObject):
                if not hasattr(targetObject, "attrList"):
                    setattr(targetObject, "attrList", [])
                targetObject.attrList.insert(0, {"caption": caption, "label": label, "icon": icon, "accel": accel, "initialState": initialState, "id": None, "idx": idx})
                return targetObject
        return CommandListDecoratorOuter
    # }}}
    # {{{ SelectDecoratorOuter(targetObject)
    def SelectDecorator(idx, caption, label, icon, accel, initialState):
        def SelectDecoratorOuter(targetObject):
            if callable(targetObject):
                if not hasattr(targetObject, "attrList"):
                    setattr(targetObject, "attrList", [])
                setattr(targetObject, "isSelect", True)
                targetObject.attrList.insert(0, {"caption": caption, "label": label, "icon": icon, "accel": accel, "initialState": initialState, "id": None, "idx": idx})
                return targetObject
        return SelectDecoratorOuter
    # }}}

    # {{{ canvasAbout(self, event)
    @CommandDecorator("About", "&About", None, None, True)
    def canvasAbout(self, event):
        GuiCanvasInterfaceAbout(self.parentFrame)
    # }}}
    # {{{ canvasBrush(self, f, idx)
    @SelectDecorator(0, "Solid brush", "Solid brush", None, None, True)
    def canvasBrush(self, f, idx):
        def canvasBrush_(self, event):
            pass
        setattr(canvasBrush_, "attrDict", f.attrList[idx])
        setattr(canvasBrush_, "isSelect", True)
        return canvasBrush_
    # }}}
    # {{{ canvasColour(self, f, idx)
    @SelectDecorator(0, "Colour #00", "Colour #00 (Bright White)", None, None, False)
    @SelectDecorator(1, "Colour #01", "Colour #01 (Black)", None, None, False)
    @SelectDecorator(2, "Colour #02", "Colour #02 (Blue)", None, None, False)
    @SelectDecorator(3, "Colour #03", "Colour #03 (Green)", None, None, False)
    @SelectDecorator(4, "Colour #04", "Colour #04 (Red)", None, None, False)
    @SelectDecorator(5, "Colour #05", "Colour #05 (Light Red)", None, None, False)
    @SelectDecorator(6, "Colour #06", "Colour #06 (Pink)", None, None, False)
    @SelectDecorator(7, "Colour #07", "Colour #07 (Yellow)", None, None, False)
    @SelectDecorator(8, "Colour #08", "Colour #08 (Light Yellow)", None, None, False)
    @SelectDecorator(9, "Colour #09", "Colour #09 (Light Green)", None, None, False)
    @SelectDecorator(10, "Colour #10", "Colour #10 (Cyan)", None, None, False)
    @SelectDecorator(11, "Colour #11", "Colour #11 (Light Cyan)", None, None, False)
    @SelectDecorator(12, "Colour #12", "Colour #12 (Light Blue)", None, None, False)
    @SelectDecorator(13, "Colour #13", "Colour #13 (Light Pink)", None, None, False)
    @SelectDecorator(14, "Colour #14", "Colour #14 (Grey)", None, None, False)
    @SelectDecorator(15, "Colour #15", "Colour #15 (Light Grey)", None, None, False)
    def canvasColour(self, f, idx):
        def canvasColour_(self, event):
            if event.GetEventType() == wx.wxEVT_TOOL:
                self.parentCanvas.brushColours[0] = idx
            elif event.GetEventType() == wx.wxEVT_TOOL_RCLICKED:
                self.parentCanvas.brushColours[1] = idx
            self.update(colours=self.parentCanvas.brushColours)
        setattr(canvasColour_, "attrDict", f.attrList[idx])
        setattr(canvasColour_, "isSelect", True)
        return canvasColour_
    # }}}
    # {{{ canvasColourAlpha(self, f, idx)
    @SelectDecorator(0, "Transparent colour", "Transparent colour", None, None, False)
    def canvasColourAlpha(self, f, idx):
        def canvasColourAlpha_(self, event):
            if event.GetEventType() == wx.wxEVT_TOOL:
                self.parentCanvas.brushColours[0] = -1
            elif event.GetEventType() == wx.wxEVT_TOOL_RCLICKED:
                self.parentCanvas.brushColours[1] = -1
            self.update(colours=self.parentCanvas.brushColours)
        setattr(canvasColourAlpha_, "attrDict", f.attrList[idx])
        setattr(canvasColourAlpha_, "isSelect", True)
        return canvasColourAlpha_
    # }}}
    # {{{ canvasCopy(self, event)
    @CommandDecorator("Copy", "&Copy", ["", wx.ART_COPY], None, False)
    def canvasCopy(self, event):
        pass
    # }}}
    # {{{ canvasCut(self, event)
    @CommandDecorator("Cut", "Cu&t", ["", wx.ART_CUT], None, False)
    def canvasCut(self, event):
        pass
    # }}}
    # {{{ canvasDelete(self, event)
    @CommandDecorator("Delete", "De&lete", ["", wx.ART_DELETE], None, False)
    def canvasDelete(self, event):
        pass
    # }}}
    # {{{ canvasExit(self, event)
    @CommandDecorator("Exit", "E&xit", None, [wx.ACCEL_CTRL, ord("X")], None)
    def canvasExit(self, event):
        if self._promptSaveChanges():
            self.parentFrame.Close(True)
    # }}}
    # {{{ canvasNew(self, event, newCanvasSize=None)
    @CommandDecorator("New", "&New", ["", wx.ART_NEW], [wx.ACCEL_CTRL, ord("N")], None)
    def canvasNew(self, event, newCanvasSize=None):
        def canvasImportEmpty(pathName):
            nonlocal newCanvasSize
            if newCanvasSize == None:
                newCanvasSize = list(self.parentCanvas.defaultCanvasSize)
            newMap = [[[1, 1, 0, " "] for x in range(newCanvasSize[0])] for y in range(newCanvasSize[1])]
            return (True, "", newMap, None, newCanvasSize)
        if self._promptSaveChanges():
            self._import(canvasImportEmpty, False, None)
    # }}}
    # {{{ canvasOpen(self, event)
    @CommandDecorator("Open", "&Open", ["", wx.ART_FILE_OPEN], [wx.ACCEL_CTRL, ord("O")], None)
    def canvasOpen(self, event):
        def canvasImportmIRC(pathName):
            rc, error = self.parentCanvas.canvas.importStore.importTextFile(pathName)
            return (rc, error, self.parentCanvas.canvas.importStore.outMap, pathName, self.parentCanvas.canvas.importStore.inSize)
        self._importFile(canvasImportmIRC, False, "mIRC art files (*.txt)|*.txt|All Files (*.*)|*.*")
    # }}}
    # {{{ canvasPaste(self, event)
    @CommandDecorator("Paste", "&Paste", ["", wx.ART_PASTE], None, False)
    def canvasPaste(self, event):
        pass
    # }}}
    # {{{ canvasRedo(self, event)
    @CommandDecorator("Redo", "&Redo", ["", wx.ART_REDO], [wx.ACCEL_CTRL, ord("Y")], False)
    def canvasRedo(self, event):
        self.parentCanvas.dispatchDeltaPatches(self.parentCanvas.canvas.journal.popRedo())
        self.update(size=self.parentCanvas.canvas.size, undoLevel=self.parentCanvas.canvas.journal.patchesUndoLevel)
    # }}}
    # {{{ canvasSave(self, event)
    @CommandDecorator("Save", "&Save", ["", wx.ART_FILE_SAVE], [wx.ACCEL_CTRL, ord("S")], None)
    def canvasSave(self, event):
        if self.canvasPathName == None:
            if self.canvasSaveAs(event) == False:
                return False
        try:
            with open(self.canvasPathName, "w", encoding="utf-8") as outFile:
                self.parentCanvas.SetCursor(wx.Cursor(wx.CURSOR_WAIT))
                self.parentCanvas.canvas.exportStore.exportTextFile(self.parentCanvas.canvas.map, self.parentCanvas.canvas.size, outFile)
                self.parentCanvas.SetCursor(wx.Cursor(wx.NullCursor))
                self.parentCanvas.dirty = False
                self.update(dirty=self.parentCanvas.dirty)
            return True
        except IOError as error:
            return False
    # }}}
    # {{{ canvasSaveAs(self, event)
    @CommandDecorator("Save As...", "Save &As...", ["", wx.ART_FILE_SAVE_AS], None, None)
    def canvasSaveAs(self, event):
        with wx.FileDialog(self.parentCanvas, "Save As", os.getcwd(), "", "mIRC art files (*.txt)|*.txt|All Files (*.*)|*.*", wx.FD_SAVE|wx.FD_OVERWRITE_PROMPT) as dialog:
            if dialog.ShowModal() == wx.ID_CANCEL:
                return False
            else:
                self.canvasPathName = dialog.GetPath()
                return self.canvasSave(event)
    # }}}
    # {{{ canvasUndo(self, event)
    @CommandDecorator("Undo", "&Undo", ["", wx.ART_UNDO], [wx.ACCEL_CTRL, ord("Z")], False)
    def canvasUndo(self, event):
        self.parentCanvas.dispatchDeltaPatches(self.parentCanvas.canvas.journal.popUndo())
        self.update(size=self.parentCanvas.canvas.size, undoLevel=self.parentCanvas.canvas.journal.patchesUndoLevel)
    # }}}

    # {{{ canvasBrushSize(self, f, dimension, incrFlag)
    @CommandListDecorator(0, "Decrease brush width", "Decrease brush width", ["toolDecrBrushW.png"], None, None)
    @CommandListDecorator(1, "Decrease brush height", "Decrease brush height", ["toolDecrBrushH.png"], None, None)
    @CommandListDecorator(2, "Decrease brush size", "Decrease brush size", ["toolDecrBrushHW.png"], None, None)
    @CommandListDecorator(3, "Increase brush width", "Increase brush width", ["toolIncrBrushW.png"], None, None)
    @CommandListDecorator(4, "Increase brush height", "Increase brush height", ["toolIncrBrushH.png"], None, None)
    @CommandListDecorator(5, "Increase brush size", "Increase brush size", ["toolIncrBrushHW.png"], None, None)
    def canvasBrushSize(self, f, dimension, incrFlag):
        def canvasBrushSize_(self, event):
            if (dimension < 2) and not incrFlag:
                if self.parentCanvas.brushSize[dimension] > 1:
                    self.parentCanvas.brushSize[dimension] -= 1
                    self.update(brushSize=self.parentCanvas.brushSize)
            elif (dimension < 2) and incrFlag:
                self.parentCanvas.brushSize[dimension] += 1
                self.update(brushSize=self.parentCanvas.brushSize)
            elif dimension == 2:
                [self.canvasBrushSize(f, dimension_, incrFlag)(self, None) for dimension_ in [0, 1]]
        setattr(canvasBrushSize_, "attrDict", f.attrList[dimension + (0 if not incrFlag else 3)])
        return canvasBrushSize_
    # }}}
    # {{{ canvasCanvasSize(self, f, dimension, incrFlag)
    @CommandListDecorator(0, "Decrease canvas height", "Decrease canvas height", ["toolDecrCanvasH.png"], None, None)
    @CommandListDecorator(1, "Decrease canvas width", "Decrease canvas width", ["toolDecrCanvasW.png"], None, None)
    @CommandListDecorator(2, "Decrease canvas size", "Decrease canvas size", ["toolDecrCanvasHW.png"], None, None)
    @CommandListDecorator(3, "Increase canvas height", "Increase canvas height", ["toolIncrCanvasH.png"], None, None)
    @CommandListDecorator(4, "Increase canvas width", "Increase canvas width", ["toolIncrCanvasW.png"], None, None)
    @CommandListDecorator(5, "Increase canvas size", "Increase canvas size", ["toolIncrCanvasHW.png"], None, None)
    def canvasCanvasSize(self, f, dimension, incrFlag):
        def canvasCanvasSize_(self, event):
            if (dimension < 2) and not incrFlag:
                if dimension == 0:
                    if self.parentCanvas.canvas.size[1] > 1:
                        self.parentCanvas.resize([self.parentCanvas.canvas.size[0], self.parentCanvas.canvas.size[1] - 1])
                elif dimension == 1:
                    if self.parentCanvas.canvas.size[0] > 1:
                        self.parentCanvas.resize([self.parentCanvas.canvas.size[0] - 1, self.parentCanvas.canvas.size[1]])
            elif (dimension < 2) and incrFlag:
                if dimension == 0:
                    self.parentCanvas.resize([self.parentCanvas.canvas.size[0], self.parentCanvas.canvas.size[1] + 1])
                elif dimension == 1:
                    self.parentCanvas.resize([self.parentCanvas.canvas.size[0] + 1, self.parentCanvas.canvas.size[1]])
            elif dimension == 2:
                [self.canvasCanvasSize(f, dimension_, incrFlag)(self, None) for dimension_ in [0, 1]]
        setattr(canvasCanvasSize_, "attrDict", f.attrList[dimension + (0 if not incrFlag else 3)])
        return canvasCanvasSize_
    # }}}
    # {{{ canvasTool(self, f, idx)
    @SelectDecorator(0, "Circle", "&Circle", ["toolCircle.png"], [wx.ACCEL_CTRL, ord("C")], False)
    @SelectDecorator(1, "Clone", "Cl&one", ["toolClone.png"], [wx.ACCEL_CTRL, ord("E")], False)
    @SelectDecorator(2, "Fill", "&Fill", ["toolFill.png"], [wx.ACCEL_CTRL, ord("F")], False)
    @SelectDecorator(3, "Line", "&Line", ["toolLine.png"], [wx.ACCEL_CTRL, ord("L")], False)
    @SelectDecorator(4, "Move", "&Move", ["toolMove.png"], [wx.ACCEL_CTRL, ord("M")], False)
    @SelectDecorator(5, "Rectangle", "&Rectangle", ["toolRect.png"], [wx.ACCEL_CTRL, ord("R")], True)
    @SelectDecorator(6, "Text", "&Text", ["toolText.png"], [wx.ACCEL_CTRL, ord("T")], False)
    def canvasTool(self, f, idx):
        def canvasTool_(self, event):
            self.currentTool = [ToolCircle, ToolSelectClone, ToolFill, ToolLine, ToolSelectMove, ToolRect, ToolText][idx](self.parentCanvas)
            self.parentFrame.menuItemsById[self.canvasTool.attrList[idx]["id"]].Check(True)
            toolBar = self.parentFrame.toolBarItemsById[self.canvasTool.attrList[idx]["id"]].GetToolBar()
            toolBar.ToggleTool(self.canvasTool.attrList[idx]["id"], True)
            self.update(toolName=self.currentTool.name)
            viewRect = self.parentCanvas.GetViewStart()
            eventDc = self.parentCanvas.backend.getDeviceContext(self.parentCanvas, viewRect)
            self.parentCanvas.applyTool(eventDc, wx.wxEVT_MOTION, None, None, self.parentCanvas.brushPos, False, False, False, self.currentTool, viewRect)
        setattr(canvasTool_, "attrDict", f.attrList[idx])
        setattr(canvasTool_, "isSelect", True)
        return canvasTool_
    # }}}

    # {{{ canvasExportAsAnsi(self, event)
    @CommandDecorator("Export as ANSI...", "Export as ANSI...", None, None, None)
    def canvasExportAsAnsi(self, event):
        with wx.FileDialog(self.parentFrame, "Save As...", os.getcwd(), "", "ANSI files (*.ans;*.txt)|*.ans;*.txt|All Files (*.*)|*.*", wx.FD_SAVE|wx.FD_OVERWRITE_PROMPT) as dialog:
            if dialog.ShowModal() == wx.ID_CANCEL:
                return False
            else:
                outPathName = dialog.GetPath()
                self.parentCanvas.SetCursor(wx.Cursor(wx.CURSOR_WAIT))
                with open(outPathName, "w", encoding="utf-8") as outFile:
                    self.parentCanvas.canvas.exportStore.exportAnsiFile(self.parentCanvas.canvas.map, self.parentCanvas.canvas.size, outFile)
                self.parentCanvas.SetCursor(wx.Cursor(wx.NullCursor))
                return True
    # }}}
    # {{{ canvasExportAsPng(self, event)
    @CommandDecorator("Export as PNG...", "Export as PN&G...", None, None, None)
    def canvasExportAsPng(self, event):
        with wx.FileDialog(self.parentFrame, "Save As...", os.getcwd(), "", "PNG (*.png)|*.png|All Files (*.*)|*.*", wx.FD_SAVE|wx.FD_OVERWRITE_PROMPT) as dialog:
            if dialog.ShowModal() == wx.ID_CANCEL:
                return False
            else:
                outPathName = dialog.GetPath()
                self.parentCanvas.SetCursor(wx.Cursor(wx.CURSOR_WAIT))
                self.parentCanvas.canvas.exportStore.exportBitmapToPngFile(self.parentCanvas.backend.canvasBitmap, outPathName, wx.BITMAP_TYPE_PNG)
                self.parentCanvas.SetCursor(wx.Cursor(wx.NullCursor))
                return True
    # }}}
    # {{{ canvasExportImgur(self, event)
    @CommandDecorator("Export to Imgur...", "Export to I&mgur...", None, None, haveImgurApiKey and haveUrllib)
    def canvasExportImgur(self, event):
        self.parentCanvas.SetCursor(wx.Cursor(wx.CURSOR_WAIT))
        rc, status, result = self.parentCanvas.canvas.exportStore.exportBitmapToImgur(self.imgurApiKey, self.parentCanvas.backend.canvasBitmap, "", "", wx.BITMAP_TYPE_PNG)
        self.parentCanvas.SetCursor(wx.Cursor(wx.NullCursor))
        if rc:
            if not wx.TheClipboard.IsOpened():
                wx.TheClipboard.Open(); wx.TheClipboard.SetData(wx.TextDataObject(result)); wx.TheClipboard.Close();
            wx.MessageBox("Exported to Imgur: {}".format(result), "Export to Imgur", wx.ICON_INFORMATION | wx.OK)
        else:
            wx.MessageBox("Failed to export to Imgur: {}".format(result), "Export to Imgur", wx.ICON_EXCLAMATION | wx.OK)
    # }}}
    # {{{ canvasExportPastebin(self, event)
    @CommandDecorator("Export to Pastebin...", "Export to Pasteb&in...", None, None, haveUrllib)
    def canvasExportPastebin(self, event):
        self.parentCanvas.SetCursor(wx.Cursor(wx.CURSOR_WAIT))
        pasteStatus, pasteResult = self.parentCanvas.canvas.exportStore.exportPastebin("253ce2f0a45140ee0a44ca99aa49260", self.parentCanvas.canvas.map, self.parentCanvas.canvas.size)
        self.parentCanvas.SetCursor(wx.Cursor(wx.NullCursor))
        if pasteStatus:
            if not wx.TheClipboard.IsOpened():
                wx.TheClipboard.Open()
                wx.TheClipboard.SetData(wx.TextDataObject(pasteResult))
                wx.TheClipboard.Close()
            wx.MessageBox("Exported to Pastebin: " + pasteResult, "Export to Pastebin", wx.OK|wx.ICON_INFORMATION)
        else:
            wx.MessageBox("Failed to export to Pastebin: " + pasteResult, "Export to Pastebin", wx.OK|wx.ICON_EXCLAMATION)
    # }}}
    # {{{ canvasExportToClipboard(self, event)
    @CommandDecorator("Export to clipboard", "&Export to clipboard", None, None, None)
    def canvasExportToClipboard(self, event):
        self.parentCanvas.SetCursor(wx.Cursor(wx.CURSOR_WAIT))
        rc, outBuffer = self.parentCanvas.canvas.exportStore.exportTextBuffer(self.parentCanvas.canvas.map, self.parentCanvas.canvas.size)
        if rc and wx.TheClipboard.Open():
            wx.TheClipboard.SetData(wx.TextDataObject(outBuffer))
            wx.TheClipboard.Close()
        self.parentCanvas.SetCursor(wx.Cursor(wx.NullCursor))
        return True
    # }}}
    # {{{ canvasImportAnsi(self, event)
    @CommandDecorator("Import ANSI...", "Import ANSI...", None, None, None)
    def canvasImportAnsi(self, event):
        def canvasImportAnsi_(pathName):
            rc, error = self.parentCanvas.canvas.importStore.importAnsiFile(pathName)
            return (rc, error, self.parentCanvas.canvas.importStore.outMap, pathName, self.parentCanvas.canvas.importStore.inSize)
        self._importFile(canvasImportAnsi_, True, "ANSI files (*.ans;*.txt)|*.ans;*.txt|All Files (*.*)|*.*")
    # }}}
    # {{{ canvasImportFromClipboard(self, event)
    @CommandDecorator("Import from clipboard", "&Import from clipboard", None, None, None)
    def canvasImportFromClipboard(self, event):
        def canvasImportFromClipboard_(pathName):
            if  wx.TheClipboard.IsSupported(wx.DataFormat(wx.DF_TEXT))  \
            and wx.TheClipboard.Open():
                inBuffer = wx.TextDataObject()
                if wx.TheClipboard.GetData(inBuffer):
                    if self._promptSaveChanges():
                        rc, error = self.parentCanvas.canvas.importStore.importTextBuffer(io.StringIO(inBuffer.GetText()))
                wx.TheClipboard.Close()
            else:
                rc, error = False, "Clipboard does not contain text data and/or cannot be opened"
            return (rc, error, self.parentCanvas.canvas.importStore.outMap, None, self.parentCanvas.canvas.importStore.inSize)
        if self._promptSaveChanges():
            self._import(canvasImportFromClipboard_, True, None)
    # }}}
    # {{{ canvasImportSauce(self, event)
    @CommandDecorator("Import SAUCE...", "Import SAUCE...", None, None, None)
    def canvasImportSauce(self, event):
        def canvasImportSauce_(pathName):
            rc, error = self.parentCanvas.canvas.importStore.importSauceFile(pathName)
            return (rc, error, self.parentCanvas.canvas.importStore.outMap, pathName, self.parentCanvas.canvas.importStore.inSize)
        self._importFile(canvasImportSauce_, True, "SAUCE files (*.ans;*.txt)|*.ans;*.txt|All Files (*.*)|*.*")
    # }}}

    # {{{ update(self, **kwargs)
    def update(self, **kwargs):
        self.lastPanelState.update(kwargs); textItems = [];
        if "cellPos" in self.lastPanelState:
            textItems.append("X: {:03d} Y: {:03d}".format(*self.lastPanelState["cellPos"]))
        if "size" in self.lastPanelState:
            textItems.append("W: {:03d} H: {:03d}".format(*self.lastPanelState["size"]))
        if "brushSize" in self.lastPanelState:
            textItems.append("Brush: {:02d}x{:02d}".format(*self.lastPanelState["brushSize"]))
        if "colours" in self.lastPanelState:
            textItems.append("FG: {:02d}, BG: {:02d}".format(*self.lastPanelState["colours"]))
            textItems.append("{} on {}".format(
                Colours[self.lastPanelState["colours"][0]][4] if self.lastPanelState["colours"][0] != -1 else "Transparent",
                Colours[self.lastPanelState["colours"][1]][4] if self.lastPanelState["colours"][1] != -1 else "Transparent"))
        if "pathName" in self.lastPanelState:
            if self.lastPanelState["pathName"] != None:
                basePathName = os.path.basename(self.lastPanelState["pathName"])
                textItems.append("Current file: {}".format(basePathName))
                self.parentFrame.SetTitle("{} - roar".format(basePathName))
            else:
                self.parentFrame.SetTitle("roar")
        if "toolName" in self.lastPanelState:
            textItems.append("Current tool: {}".format(self.lastPanelState["toolName"]))
        if  "dirty" in self.lastPanelState  \
        and self.lastPanelState["dirty"]:
            textItems.append("*")
        self.parentFrame.statusBar.SetStatusText(" | ".join(textItems))
        if "undoLevel" in self.lastPanelState:
            if self.lastPanelState["undoLevel"] >= 0:
                self.parentFrame.menuItemsById[self.canvasUndo.attrDict["id"]].Enable(True)
                toolBar = self.parentFrame.toolBarItemsById[self.canvasUndo.attrDict["id"]].GetToolBar()
                toolBar.EnableTool(self.canvasUndo.attrDict["id"], True)
            else:
                self.parentFrame.menuItemsById[self.canvasUndo.attrDict["id"]].Enable(False)
                toolBar = self.parentFrame.toolBarItemsById[self.canvasUndo.attrDict["id"]].GetToolBar()
                toolBar.EnableTool(self.canvasUndo.attrDict["id"], False)
            if self.lastPanelState["undoLevel"] > 0:
                self.parentFrame.menuItemsById[self.canvasRedo.attrDict["id"]].Enable(True)
                toolBar = self.parentFrame.toolBarItemsById[self.canvasRedo.attrDict["id"]].GetToolBar()
                toolBar.EnableTool(self.canvasRedo.attrDict["id"], True)
            else:
                self.parentFrame.menuItemsById[self.canvasRedo.attrDict["id"]].Enable(False)
                toolBar = self.parentFrame.toolBarItemsById[self.canvasRedo.attrDict["id"]].GetToolBar()
                toolBar.EnableTool(self.canvasRedo.attrDict["id"], False)
    # }}}

    # {{{ accels
    accels = (
        canvasNew, canvasOpen, canvasSave, canvasExit, canvasUndo, canvasRedo,
        canvasTool(None, canvasTool, 5), canvasTool(None, canvasTool, 0), canvasTool(None, canvasTool, 2), canvasTool(None, canvasTool, 3), canvasTool(None, canvasTool, 6), canvasTool(None, canvasTool, 1), canvasTool(None, canvasTool, 4),
    )
    # }}}
    # {{{ menus
    menus = (
        ("&File",
            canvasNew, canvasOpen, canvasSave, canvasSaveAs, NID_MENU_SEP,
            canvasExportAsAnsi, canvasExportToClipboard, canvasExportImgur, canvasExportPastebin, canvasExportAsPng, NID_MENU_SEP,
            canvasImportAnsi, canvasImportFromClipboard, canvasImportSauce, NID_MENU_SEP,
            canvasExit,
        ),
        ("&Edit",
            canvasUndo, canvasRedo, NID_MENU_SEP,
            canvasCut, canvasCopy, canvasPaste,
            canvasDelete, NID_MENU_SEP,
            canvasCanvasSize(None, canvasCanvasSize, 1, True), canvasCanvasSize(None, canvasCanvasSize, 1, False), canvasCanvasSize(None, canvasCanvasSize, 0, True), canvasCanvasSize(None, canvasCanvasSize, 0, False), NID_MENU_SEP,
            canvasCanvasSize(None, canvasCanvasSize, 2, True), canvasCanvasSize(None, canvasCanvasSize, 2, False), NID_MENU_SEP,
            canvasBrushSize(None, canvasBrushSize, 0, True), canvasBrushSize(None, canvasBrushSize, 0, False), canvasBrushSize(None, canvasBrushSize, 1, True), canvasBrushSize(None, canvasBrushSize, 1, False), NID_MENU_SEP,
            canvasBrushSize(None, canvasBrushSize, 2, True), canvasBrushSize(None, canvasBrushSize, 2, False), NID_MENU_SEP,
            canvasBrush(None, canvasBrush, 0),
        ),
        ("&Tools",
            canvasTool(None, canvasTool, 5), canvasTool(None, canvasTool, 0), canvasTool(None, canvasTool, 2), canvasTool(None, canvasTool, 3), canvasTool(None, canvasTool, 6), canvasTool(None, canvasTool, 1), canvasTool(None, canvasTool, 4),),
        ("&Help",
            canvasAbout,),
    )
    # }}}
    # {{{ toolBars
    toolBars = (
        (canvasNew, canvasOpen, canvasSave, canvasSaveAs, NID_TOOLBAR_HSEP,
         canvasUndo, canvasRedo, NID_TOOLBAR_HSEP,
         canvasCut, canvasCopy, canvasPaste, canvasDelete, NID_TOOLBAR_HSEP,
         canvasCanvasSize(None, canvasCanvasSize, 1, True), canvasCanvasSize(None, canvasCanvasSize, 1, False), canvasCanvasSize(None, canvasCanvasSize, 0, True), canvasCanvasSize(None, canvasCanvasSize, 0, False), NID_TOOLBAR_HSEP,
         canvasCanvasSize(None, canvasCanvasSize, 2, True), canvasCanvasSize(None, canvasCanvasSize, 2, False), NID_TOOLBAR_HSEP,
         canvasTool(None, canvasTool, 5), canvasTool(None, canvasTool, 0), canvasTool(None, canvasTool, 2), canvasTool(None, canvasTool, 3), canvasTool(None, canvasTool, 6), canvasTool(None, canvasTool, 1), canvasTool(None, canvasTool, 4),
        ),
        (canvasColour(None, canvasColour, 0), canvasColour(None, canvasColour, 1), canvasColour(None, canvasColour, 2), canvasColour(None, canvasColour, 3),
         canvasColour(None, canvasColour, 4), canvasColour(None, canvasColour, 5), canvasColour(None, canvasColour, 6), canvasColour(None, canvasColour, 7),
         canvasColour(None, canvasColour, 8), canvasColour(None, canvasColour, 9), canvasColour(None, canvasColour, 10), canvasColour(None, canvasColour, 11),
         canvasColour(None, canvasColour, 12), canvasColour(None, canvasColour, 13), canvasColour(None, canvasColour, 14), canvasColour(None, canvasColour, 15),
         canvasColourAlpha(None, canvasColourAlpha, 0), NID_TOOLBAR_HSEP,
         canvasBrushSize(None, canvasBrushSize, 1, True), canvasBrushSize(None, canvasBrushSize, 0, False), canvasBrushSize(None, canvasBrushSize, 1, True), canvasBrushSize(None, canvasBrushSize, 1, False), NID_TOOLBAR_HSEP,
         canvasBrushSize(None, canvasBrushSize, 2, True), canvasBrushSize(None, canvasBrushSize, 2, False),
        ),
    )
    # }}}

    #
    # __init__(self, parentCanvas, parentFrame):
    def __init__(self, parentCanvas, parentFrame):
        self.canvasPathName, self.lastPanelState, self.parentCanvas, self.parentFrame = None, {}, parentCanvas, parentFrame
        self.imgurApiKey = ImgurApiKey.imgurApiKey if haveImgurApiKey else None
        self._initColourBitmaps()

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