#!/usr/bin/env python
# -*- coding: utf8 -*_
import esky
esky.run_startup_hooks()

"""
mcedit.py

Startup, main menu, keyboard configuration, automatic updating.
"""
import OpenGL
import sys
if "-debug" not in sys.argv:
    OpenGL.ERROR_CHECKING = False

import albow
from albow.dialogs import Dialog
from albow.openglwidgets import GLViewport
from albow.root import RootWidget
import config
import directories
import functools
from glbackground import Panel
import glutils
import leveleditor
from leveleditor import ControlSettings, Settings
import logging
import mceutils
import mcplatform
from mcplatform import platform_open
import numpy


from OpenGL import GL
import os
import os.path
import pygame
from pygame import display, key, rect
import pymclevel
import release
import shutil
import sys
import traceback

pymclevel.MCInfdevOldLevel.loadedChunkLimit = 0

ESCAPE = '\033'


class FileOpener(albow.Widget):
    is_gl_container = True

    def __init__(self, mcedit, *args, **kwargs):
        kwargs['rect'] = mcedit.rect
        albow.Widget.__init__(self, *args, **kwargs)
        self.anchor = 'tlbr'
        self.mcedit = mcedit

        helpColumn = []

        label = albow.Label("{0} {1} {2} {3} {4} {5}".format(
            config.config.get('Keys', 'Forward'),
            config.config.get('Keys', 'Left'),
            config.config.get('Keys', 'Back'),
            config.config.get('Keys', 'Right'),
            config.config.get('Keys', 'Up'),
            config.config.get('Keys', 'Down'),
        ).upper() + " to move")
        label.anchor = 'whrt'
        label.align = 'r'
        helpColumn.append(label)

        def addHelp(text):
            label = albow.Label(text)
            label.anchor = 'whrt'
            label.align = "r"
            helpColumn.append(label)

        addHelp("{0}".format(config.config.get('Keys', 'Brake').upper()) + " to slow down")
        addHelp("Right-click to toggle camera control")
        addHelp("Mousewheel to control tool distance")
        addHelp("Hold SHIFT to move along a major axis")
        addHelp("Hold ALT for details")

        helpColumn = albow.Column(helpColumn, align="r")
        helpColumn.topright = self.topright
        helpColumn.anchor = "whrt"
        #helpColumn.is_gl_container = True
        self.add(helpColumn)

        keysColumn = [albow.Label("")]
        buttonsColumn = [leveleditor.ControlPanel.getHeader()]

        shortnames = []
        for world in self.mcedit.recentWorlds():
            shortname = os.path.basename(world)
            try:
                if pymclevel.MCInfdevOldLevel.isLevel(world):
                    lev = pymclevel.MCInfdevOldLevel(world)
                    shortname = lev.LevelName
                    if lev.LevelName != lev.displayName:
                        shortname = u"{0} ({1})".format(lev.LevelName, lev.displayName)
            except Exception, e:
                logging.warning(
                    'Couldn\'t get name from recent world: {0!r}'.format(e))

            if shortname == "level.dat":
                shortname = os.path.basename(os.path.dirname(world))

            if len(shortname) > 40:
                shortname = shortname[:37] + "..."
            shortnames.append(shortname)

        hotkeys = ([('N', 'Create New World', self.createNewWorld),
            ('L', 'Load World...', self.mcedit.editor.askLoadWorld),
            ('O', 'Open a level...', self.promptOpenAndLoad)] + [
            ('F{0}'.format(i + 1), shortnames[i], self.createLoadButtonHandler(world))
            for i, world in enumerate(self.mcedit.recentWorlds())])

        commandRow = mceutils.HotkeyColumn(hotkeys, keysColumn, buttonsColumn)
        commandRow.anchor = 'lrh'

        sideColumn = mcedit.makeSideColumn()
        sideColumn.anchor = 'wh'

        contentRow = albow.Row((commandRow, sideColumn))
        contentRow.center = self.center
        contentRow.anchor = "rh"
        self.add(contentRow)
        self.sideColumn = sideColumn

    def gl_draw_self(self, root, offset):
        #self.mcedit.editor.mainViewport.setPerspective();
        self.mcedit.editor.drawStars()

    def idleevent(self, evt):
        self.mcedit.editor.doWorkUnit()
        #self.invalidate()

    def key_down(self, evt):
        keyname = key.name(evt.key)
        if keyname == 'f4' and (key.get_mods() & (pygame.KMOD_ALT | pygame.KMOD_LALT | pygame.KMOD_RALT)):
            raise SystemExit
        if keyname in ('f1', 'f2', 'f3', 'f4', 'f5'):
            self.mcedit.loadRecentWorldNumber(int(keyname[1]))
        if keyname is "o":
            self.promptOpenAndLoad()
        if keyname is "n":
            self.createNewWorld()
        if keyname is "l":
            self.mcedit.editor.askLoadWorld()

    def promptOpenAndLoad(self):
        try:
            filename = mcplatform.askOpenFile()
            if filename:
                self.mcedit.loadFile(filename)
        except Exception, e:
            logging.error('Error during proptOpenAndLoad: {0!r}'.format(e))

    def createNewWorld(self):
        self.parent.createNewWorld()

    def createLoadButtonHandler(self, filename):
        return lambda: self.mcedit.loadFile(filename)


class KeyConfigPanel(Dialog):
    keyConfigKeys = [
        "<Movement Controls>",
        "Forward",
        "Back",
        "Left",
        "Right",
        "Up",
        "Down",
        "Brake",
        "",
        "<Camera Controls>",
        "Pan Left",
        "Pan Right",
        "Pan Up",
        "Pan Down",
        "",
        "<Tool Controls>",
        "Rotate",
        "Roll",
        "Flip",
        "Mirror",
        "Swap",
        "Increase Reach",
        "Decrease Reach",
        "Reset Reach",
    ]

    presets = {"WASD": [
        ("Forward", "w"),
        ("Back", "s"),
        ("Left", "a"),
        ("Right", "d"),
        ("Up", "q"),
        ("Down", "z"),
        ("Brake", "space"),

        ("Rotate", "e"),
        ("Roll", "r"),
        ("Flip", "f"),
        ("Mirror", "g"),
        ("Swap", "x"),
        ("Increase Reach", "mouse4"),
        ("Decrease Reach", "mouse5"),
        ("Reset Reach", "mouse3"),
    ],
    "Arrows": [
        ("Forward", "up"),
        ("Back", "down"),
        ("Left", "left"),
        ("Right", "right"),
        ("Up", "page up"),
        ("Down", "page down"),
        ("Brake", "space"),

        ("Rotate", "home"),
        ("Roll", "end"),
        ("Flip", "insert"),
        ("Mirror", "delete"),
        ("Swap", "\\"),
        ("Increase Reach", "mouse4"),
        ("Decrease Reach", "mouse5"),
        ("Reset Reach", "mouse3"),
    ],
    "Numpad": [
        ("Forward", "[8]"),
        ("Back", "[5]"),
        ("Left", "[4]"),
        ("Right", "[6]"),
        ("Up", "[9]"),
        ("Down", "[3]"),
        ("Brake", "[0]"),

        ("Rotate", "[-]"),
        ("Roll", "[+]"),
        ("Flip", "[/]"),
        ("Mirror", "[*]"),
        ("Swap", "[.]"),
        ("Increase Reach", "mouse4"),
        ("Decrease Reach", "mouse5"),
        ("Reset Reach", "mouse3"),
    ]}

    selectedKeyIndex = 0

    def __init__(self):
        Dialog.__init__(self)
        keyConfigTable = albow.TableView(columns=[albow.TableColumn("Command", 400, "l"), albow.TableColumn("Assigned Key", 150, "r")])
        keyConfigTable.num_rows = lambda: len(self.keyConfigKeys)
        keyConfigTable.row_data = self.getRowData
        keyConfigTable.row_is_selected = lambda x: x == self.selectedKeyIndex
        keyConfigTable.click_row = self.selectTableRow
        tableWidget = albow.Widget()
        tableWidget.add(keyConfigTable)
        tableWidget.shrink_wrap()

        self.keyConfigTable = keyConfigTable

        buttonRow = (albow.Button("Assign Key...", action=self.askAssignSelectedKey),
                     albow.Button("Done", action=self.dismiss))

        buttonRow = albow.Row(buttonRow)

        choiceButton = mceutils.ChoiceButton(["WASD", "Arrows", "Numpad"], choose=self.choosePreset)
        if config.config.get("Keys", "Forward") == "up":
            choiceButton.selectedChoice = "Arrows"
        if config.config.get("Keys", "Forward") == "[8]":
            choiceButton.selectedChoice = "Numpad"

        choiceRow = albow.Row((albow.Label("Presets: "), choiceButton))
        self.choiceButton = choiceButton

        col = albow.Column((tableWidget, choiceRow, buttonRow))
        self.add(col)
        self.shrink_wrap()

    def choosePreset(self):
        preset = self.choiceButton.selectedChoice
        keypairs = self.presets[preset]
        for configKey, key in keypairs:
            config.config.set("Keys", configKey, key)

    def getRowData(self, i):
        configKey = self.keyConfigKeys[i]
        if self.isConfigKey(configKey):
            key = config.config.get("Keys", configKey)
        else:
            key = ""
        return configKey, key

    def isConfigKey(self, configKey):
        return not (len(configKey) == 0 or configKey[0] == "<")

    def selectTableRow(self, i, evt):
        self.selectedKeyIndex = i
        if evt.num_clicks == 2:
            self.askAssignSelectedKey()

    def askAssignSelectedKey(self):
        self.askAssignKey(self.keyConfigKeys[self.selectedKeyIndex])

    def askAssignKey(self, configKey, labelString=None):
        if not self.isConfigKey(configKey):
            return

        panel = Panel()
        panel.bg_color = (0.5, 0.5, 0.6, 1.0)

        if labelString is None:
            labelString = "Press a key to assign to the action \"{0}\"\n\nPress ESC to cancel.".format(configKey)
        label = albow.Label(labelString)
        panel.add(label)
        panel.shrink_wrap()

        def panelKeyDown(evt):
            keyname = key.name(evt.key)
            panel.dismiss(keyname)

        def panelMouseDown(evt):
            button = leveleditor.remapMouseButton(evt.button)
            if button > 2:
                keyname = "mouse{0}".format(button)
                panel.dismiss(keyname)

        panel.key_down = panelKeyDown
        panel.mouse_down = panelMouseDown

        keyname = panel.present()
        if keyname != "escape":
            occupiedKeys = [(v, k) for (k, v) in config.config.items("Keys") if v == keyname]
            oldkey = config.config.get("Keys", configKey)
            config.config.set("Keys", configKey, keyname)
            for keyname, setting in occupiedKeys:
                if self.askAssignKey(setting,
                                     "The key {0} is no longer bound to {1}.\n"
                                     "Press a new key for the action \"{1}\"\n\n"
                                     "Press ESC to cancel."
                                     .format(keyname, setting)):
                    config.config.set("Keys", configKey, oldkey)
                    return True
        else:
            return True


class GraphicsPanel(Panel):
    def __init__(self, mcedit):
        Panel.__init__(self)

        self.mcedit = mcedit

        def getPacks():
            return ["[Default]", "[Current]"] + mcplatform.getTexturePacks()

        def packChanged():
            self.texturePack = self.texturePackChoice.selectedChoice
            packs = getPacks()
            if self.texturePack not in packs:
                self.texturePack = "[Default]"
            self.texturePackChoice.selectedChoice = self.texturePack
            self.texturePackChoice.choices = packs

        self.texturePackChoice = texturePackChoice = mceutils.ChoiceButton(getPacks(), choose=packChanged)
        if self.texturePack in self.texturePackChoice.choices:
            self.texturePackChoice.selectedChoice = self.texturePack

        texturePackRow = albow.Row((albow.Label("Skin: "), texturePackChoice))

        fieldOfViewRow = mceutils.FloatInputRow("Field of View: ",
            ref=Settings.fov.propertyRef(), width=100, min=25, max=120)

        targetFPSRow = mceutils.IntInputRow("Target FPS: ",
            ref=Settings.targetFPS.propertyRef(), width=100, min=1, max=60)

        bufferLimitRow = mceutils.IntInputRow("Vertex Buffer Limit (MB): ",
            ref=Settings.vertexBufferLimit.propertyRef(), width=100, min=0)

        fastLeavesRow = mceutils.CheckBoxLabel("Fast Leaves",
            ref=Settings.fastLeaves.propertyRef(),
            tooltipText="Leaves are solid, like Minecraft's 'Fast' graphics")

        roughGraphicsRow = mceutils.CheckBoxLabel("Rough Graphics",
            ref=Settings.roughGraphics.propertyRef(),
            tooltipText="All blocks are drawn the same way (overrides 'Fast Leaves')")

        enableMouseLagRow = mceutils.CheckBoxLabel("Enable Mouse Lag",
            ref=Settings.enableMouseLag.propertyRef(),
            tooltipText="Enable choppy mouse movement for faster loading.")

        settingsColumn = albow.Column((fastLeavesRow,
                                  roughGraphicsRow,
                                  enableMouseLagRow,
                                  texturePackRow,
                                  fieldOfViewRow,
                                  targetFPSRow,
                                  bufferLimitRow,
                                  ), align='r')

        settingsColumn = albow.Column((albow.Label("Settings"),
                                 settingsColumn))

        settingsRow = albow.Row((settingsColumn,))

        optionsColumn = albow.Column((settingsRow, albow.Button("OK", action=mcedit.removeGraphicOptions)))
        self.add(optionsColumn)
        self.shrink_wrap()

    def _reloadTextures(self, pack):
        if hasattr(pymclevel.alphaMaterials, "terrainTexture"):
            self.mcedit.displayContext.loadTextures()

    texturePack = Settings.skin.configProperty(_reloadTextures)


class OptionsPanel(Dialog):
    anchor = 'wh'

    def __init__(self, mcedit):
        Dialog.__init__(self)

        self.mcedit = mcedit

        autoBrakeRow = mceutils.CheckBoxLabel("Autobrake",
            ref=ControlSettings.autobrake.propertyRef(),
            tooltipText="Apply brake when not pressing movement keys")

        swapAxesRow = mceutils.CheckBoxLabel("Swap Axes Looking Down",
            ref=ControlSettings.swapAxes.propertyRef(),
            tooltipText="Change the direction of the Forward and Backward keys when looking down")

        cameraAccelRow = mceutils.FloatInputRow("Camera Acceleration: ",
            ref=ControlSettings.cameraAccel.propertyRef(), width=100, min=5.0)

        cameraDragRow = mceutils.FloatInputRow("Camera Drag: ",
            ref=ControlSettings.cameraDrag.propertyRef(), width=100, min=1.0)

        cameraMaxSpeedRow = mceutils.FloatInputRow("Camera Max Speed: ",
            ref=ControlSettings.cameraMaxSpeed.propertyRef(), width=100, min=1.0)

        cameraBrakeSpeedRow = mceutils.FloatInputRow("Camera Braking Speed: ",
            ref=ControlSettings.cameraBrakingSpeed.propertyRef(), width=100, min=1.0)

        mouseSpeedRow = mceutils.FloatInputRow("Mouse Speed: ",
            ref=ControlSettings.mouseSpeed.propertyRef(), width=100, min=0.1, max=20.0)

        invertRow = mceutils.CheckBoxLabel("Invert Mouse",
            ref=ControlSettings.invertMousePitch.propertyRef(),
            tooltipText="Reverse the up and down motion of the mouse.")

        spaceHeightRow = mceutils.IntInputRow("Low Detail Height",
            ref=Settings.spaceHeight.propertyRef(),
            tooltipText="When you are this far above the top of the world, move fast and use low-detail mode.")

        blockBufferRow = mceutils.IntInputRow("Block Buffer",
            ref=Settings.blockBuffer.propertyRef(), min=1,
            tooltipText="Amount of memory used for temporary storage.  When more than this is needed, the disk is used instead.")

        setWindowPlacementRow = mceutils.CheckBoxLabel("Set Window Placement",
            ref=Settings.setWindowPlacement.propertyRef(),
            tooltipText="Try to save and restore the window position.")

        windowSizeRow = mceutils.CheckBoxLabel("Window Resize Alert",
            ref=Settings.shouldResizeAlert.propertyRef(),
            tooltipText="Reminds you that the cursor won't work correctly after resizing the window.")

        visibilityCheckRow = mceutils.CheckBoxLabel("Visibility Check",
            ref=Settings.visibilityCheck.propertyRef(),
            tooltipText="Do a visibility check on chunks while loading. May cause a crash.")

        longDistanceRow = mceutils.CheckBoxLabel("Long-Distance Mode",
            ref=Settings.longDistanceMode.propertyRef(),
            tooltipText="Always target the farthest block under the cursor, even in mouselook mode. Shortcut: ALT-Z")

        flyModeRow = mceutils.CheckBoxLabel("Fly Mode",
            ref=Settings.flyMode.propertyRef(),
            tooltipText="Moving forward and backward will not change your altitude in Fly Mode.")

        self.goPortableButton = goPortableButton = albow.Button("Change", action=self.togglePortable)

        goPortableButton.tooltipText = self.portableButtonTooltip()
        goPortableRow = albow.Row((albow.ValueDisplay(ref=albow.AttrRef(self, 'portableLabelText'), width=250, align='r'), goPortableButton))

        reportRow = mceutils.CheckBoxLabel("Report Crashes",
            ref=Settings.reportCrashes.propertyRef(),
            tooltipText="Automatically report fatal errors to the author.")

        inputs = (
            spaceHeightRow,
            cameraAccelRow,
            cameraDragRow,
            cameraMaxSpeedRow,
            cameraBrakeSpeedRow,
            blockBufferRow,
            mouseSpeedRow,
        )

        options = (
            longDistanceRow,
            flyModeRow,
            autoBrakeRow,
            swapAxesRow,
            invertRow,
            visibilityCheckRow,
            ) + (
            ((sys.platform == "win32" and pygame.version.vernum == (1, 9, 1)) and (windowSizeRow,) or ())
            ) + (
            reportRow,
            ) + (
            (sys.platform == "win32") and (setWindowPlacementRow,) or ()
            ) + (
            goPortableRow,
        )

        rightcol = albow.Column(options, align='r')
        leftcol = albow.Column(inputs, align='r')

        optionsColumn = albow.Column((albow.Label("Options"),
                                albow.Row((leftcol, rightcol), align="t")))

        settingsRow = albow.Row((optionsColumn,))

        optionsColumn = albow.Column((settingsRow, albow.Button("OK", action=self.dismiss)))

        self.add(optionsColumn)
        self.shrink_wrap()

    @property
    def blockBuffer(self):
        return Settings.blockBuffer.get() / 1048576

    @blockBuffer.setter
    def blockBuffer(self, val):
        Settings.blockBuffer.set(int(val * 1048576))

    def portableButtonTooltip(self):
        return ("Click to make your MCEdit install self-contained by moving the settings and schematics into the program folder",
                "Click to make your MCEdit install persistent by moving the settings and schematics into your Documents folder")[mcplatform.portable]

    @property
    def portableLabelText(self):
        return ("Install Mode: Portable", "Install Mode: Fixed")[1 - mcplatform.portable]

    def togglePortable(self):
        textChoices = [
             "This will make your MCEdit \"portable\" by moving your settings and schematics into the same folder as {0}. Continue?".format((sys.platform == "darwin" and "the MCEdit application" or "MCEditData")),
             "This will move your settings and schematics to your Documents folder. Continue?",
        ]
        if sys.platform == "darwin":
            textChoices[1] = "This will move your schematics to your Documents folder and your settings to your Preferences folder. Continue?"

        alertText = textChoices[mcplatform.portable]
        if albow.ask(alertText) == "OK":
            try:
                [mcplatform.goPortable, mcplatform.goFixed][mcplatform.portable]()
            except Exception, e:
                traceback.print_exc()
                albow.alert(u"Error while moving files: {0}".format(repr(e)))

        self.goPortableButton.tooltipText = self.portableButtonTooltip()


class MCEdit(GLViewport):
    debug_resize = True

    def __init__(self, displayContext, *args):
        ws = displayContext.getWindowSize()
        r = rect.Rect(0, 0, ws[0], ws[1])
        GLViewport.__init__(self, r)
        self.displayContext = displayContext
        self.bg_color = (0, 0, 0, 1)
        self.anchor = 'tlbr'

        if not config.config.has_section("Recent Worlds"):
            config.config.add_section("Recent Worlds")
            self.setRecentWorlds([""] * 5)

        self.optionsPanel = OptionsPanel(self)
        self.graphicOptionsPanel = GraphicsPanel(self)

        self.keyConfigPanel = KeyConfigPanel()

        self.droppedLevel = None
        self.reloadEditor()

        """
        check command line for files dropped from explorer
        """
        if len(sys.argv) > 1:
            for arg in sys.argv[1:]:
                f = arg.decode(sys.getfilesystemencoding())
                if os.path.isdir(os.path.join(pymclevel.saveFileDir, f)):
                    f = os.path.join(pymclevel.saveFileDir, f)
                    self.droppedLevel = f
                    break
                if os.path.exists(f):
                    self.droppedLevel = f
                    break

        self.fileOpener = FileOpener(self)
        self.add(self.fileOpener)

        self.fileOpener.focus()

    editor = None

    def reloadEditor(self):
        reload(leveleditor)
        level = None

        pos = None

        if self.editor:
            level = self.editor.level
            self.remove(self.editor)
            c = self.editor.mainViewport
            pos, yaw, pitch = c.position, c.yaw, c.pitch

        self.editor = leveleditor.LevelEditor(self)
        self.editor.anchor = 'tlbr'
        if level:
            self.add(self.editor)
            self.editor.gotoLevel(level)
            self.focus_switch = self.editor

            if pos is not None:
                c = self.editor.mainViewport

                c.position, c.yaw, c.pitch = pos, yaw, pitch

    def removeGraphicOptions(self):
        self.removePanel(self.graphicOptionsPanel)

    def removePanel(self, panel):
        if panel.parent:
            panel.set_parent(None)
            if self.editor.parent:
                self.focus_switch = self.editor
            elif self.fileOpener.parent:
                self.focus_switch = self.fileOpener

    def add_right(self, widget):
        w, h = self.size
        widget.centery = h // 2
        widget.right = w
        self.add(widget)

    def showPanel(self, optionsPanel):
        if optionsPanel.parent:
            optionsPanel.set_parent(None)

        optionsPanel.anchor = "whr"
        self.add_right(optionsPanel)
        self.editor.mouseLookOff()

    def showOptions(self):
        self.optionsPanel.present()

    def showGraphicOptions(self):
        self.showPanel(self.graphicOptionsPanel)

    def showKeyConfig(self):
        self.keyConfigPanel.present()

    def loadRecentWorldNumber(self, i):
        worlds = list(self.recentWorlds())
        if i - 1 < len(worlds):
            self.loadFile(worlds[i - 1])

    numRecentWorlds = 5

    def removeLevelDat(self, filename):
        if filename.endswith("level.dat"):
            filename = os.path.dirname(filename)
        return filename

    def recentWorlds(self):
        worlds = []
        for i in range(self.numRecentWorlds):
            if config.config.has_option("Recent Worlds", str(i)):
                try:
                    filename = (config.config.get("Recent Worlds", str(i)).decode('utf-8'))
                    worlds.append(self.removeLevelDat(filename))
                except Exception, e:
                    logging.error(repr(e))

        return list((f for f in worlds if f and os.path.exists(f)))

    def addRecentWorld(self, filename):
        filename = self.removeLevelDat(filename)
        rw = list(self.recentWorlds())
        if filename in rw:
            return
        rw = [filename] + rw[:self.numRecentWorlds - 1]
        self.setRecentWorlds(rw)

    def setRecentWorlds(self, worlds):
        for i, filename in enumerate(worlds):
            config.config.set("Recent Worlds", str(i), filename.encode('utf-8'))

    def makeSideColumn(self):
        def showLicense():
            platform_open(os.path.join(directories.dataDir, "LICENSE.txt"))

        readmePath = os.path.join(directories.dataDir, "README.html")

        hotkeys = ([("",
                  "Keys",
                  self.showKeyConfig),
                  ("",
                  "Graphics",
                  self.showGraphicOptions),
                  ("",
                  "Options",
                  self.showOptions),
                  ("",
                  "Source Code",
                  lambda: platform_open("http://www.github.com/mcedit/mcedit")),
                  ("",
                  "View Readme",
                  lambda: platform_open(readmePath)),
                  ("",
                  "Recent Changes",
                  lambda: platform_open("https://github.com/mcedit/mcedit/wiki/Version-History")),
                  ("",
                  "License",
                  showLicense),
                  ])

        c = mceutils.HotkeyColumn(hotkeys)

        return c

    def resized(self, dw, dh):
        """
        Handle window resizing events.
        """
        GLViewport.resized(self, dw, dh)

        (w, h) = self.size
        if w == 0 and h == 0:
            # The window has been minimized, no need to draw anything.
            self.editor.renderer.render = False
            return

        if not self.editor.renderer.render:
            self.editor.renderer.render = True

        surf = pygame.display.get_surface()
        assert isinstance(surf, pygame.Surface)
        dw, dh = surf.get_size()

        if w > 0 and h > 0:
            Settings.windowWidth.set(w)
            Settings.windowHeight.set(h)
            config.saveConfig()

        if pygame.version.vernum == (1, 9, 1):
            if sys.platform == "win32":
                if w - dw > 20 or h - dh > 20:
                    if not hasattr(self, 'resizeAlert'):
                        self.resizeAlert = self.shouldResizeAlert
                    if self.resizeAlert:
                        albow.alert("Window size increased. You may have problems using the cursor until MCEdit is restarted.")
                        self.resizeAlert = False

    shouldResizeAlert = Settings.shouldResizeAlert.configProperty()

    def loadFile(self, filename):
        self.removeGraphicOptions()
        if os.path.exists(filename):
            try:
                self.editor.loadFile(filename)
            except Exception, e:
                logging.error('Failed to load file {0}: {1!r}'.format(
                    filename, e))
                return None

            self.remove(self.fileOpener)
            self.fileOpener = None
            if self.editor.level:
                self.editor.size = self.size
                self.add(self.editor)
                self.focus_switch = self.editor

    def createNewWorld(self):
        level = self.editor.createNewLevel()
        if level:
            self.remove(self.fileOpener)
            self.editor.size = self.size

            self.add(self.editor)

            self.focus_switch = self.editor
            albow.alert("World created. To expand this infinite world, explore the world in Minecraft or use the Chunk Control tool to add or delete chunks.")

    def removeEditor(self):
        self.remove(self.editor)
        self.fileOpener = FileOpener(self)
        self.add(self.fileOpener)
        self.focus_switch = self.fileOpener

    def confirm_quit(self):
        if self.editor.unsavedEdits:
            result = albow.ask("There are {0} unsaved changes.".format(self.editor.unsavedEdits),
                     responses=["Save and Quit", "Quit", "Cancel"])
            if result == "Save and Quit":
                self.saveAndQuit()
            elif result == "Quit":
                self.justQuit()
            elif result == "Cancel":
                return False
        else:
            raise SystemExit

    def saveAndQuit(self):
        self.editor.saveFile()
        raise SystemExit

    def justQuit(self):
        raise SystemExit

    closeMinecraftWarning = Settings.closeMinecraftWarning.configProperty()

    @classmethod
    def main(self):
        displayContext = GLDisplayContext()

        rootwidget = RootWidget(displayContext.display)
        mcedit = MCEdit(displayContext)
        rootwidget.displayContext = displayContext
        rootwidget.confirm_quit = mcedit.confirm_quit
        rootwidget.mcedit = mcedit

        rootwidget.add(mcedit)
        rootwidget.focus_switch = mcedit
        if 0 == len(pymclevel.alphaMaterials.yamlDatas):
            albow.alert("Failed to load minecraft.yaml. Check the console window for details.")

        if mcedit.droppedLevel:
            mcedit.loadFile(mcedit.droppedLevel)

        # Attempt to auto-update. This entire thing will be redone
        # with the UI update so that it doesn't block and reports progress.
        if hasattr(sys, 'frozen'):
            # We're being run from a bundle, check for updates.
            import esky

            # We shouldn't be using Github for this.
            app = esky.Esky(
                sys.executable,
                'https://github.com/mcedit/mcedit/downloads'
            )

            try:
                update_version = app.find_update()
            except:
                # FIXME: Horrible, hacky kludge.
                update_version = None
                logging.exception('Error while checking for updates')

            if update_version:
                answer = albow.ask(
                    'An updated version is available, would you like to '
                    'download it?',
                    [
                        'Yes',
                        'No',
                    ],
                    default=0,
                    cancel=1
                )
                if answer == 'Yes':
                    app.auto_update()
                    raise SystemExit()

        if mcedit.closeMinecraftWarning:
            answer = albow.ask("Warning: You must close Minecraft completely before editing. Save corruption may result. Get Satisfaction to learn more.", ["Get Satisfaction", "Don't remind me again.", "OK"], default=1, cancel=1)
            if answer == "Get Satisfaction":
                mcplatform.platform_open("http://getsatisfaction.com/mojang/topics/region_file_cache_interferes_with_map_editors_risking_save_corruption")
            if answer == "Don't remind me again.":
                mcedit.closeMinecraftWarning = False

        config.saveConfig()

        while True:
            try:
                rootwidget.run()
            except SystemExit:
                if sys.platform == "win32" and Settings.setWindowPlacement.get():
                    (flags, showCmd, ptMin, ptMax, rect) = mcplatform.win32gui.GetWindowPlacement(display.get_wm_info()['window'])
                    X, Y, r, b = rect
                    #w = r-X
                    #h = b-Y
                    if (showCmd == mcplatform.win32con.SW_MINIMIZE or
                       showCmd == mcplatform.win32con.SW_SHOWMINIMIZED):
                        showCmd = mcplatform.win32con.SW_SHOWNORMAL

                    Settings.windowX.set(X)
                    Settings.windowY.set(Y)
                    Settings.windowShowCmd.set(showCmd)

                config.saveConfig()
                mcedit.editor.renderer.discardAllChunks()
                mcedit.editor.deleteAllCopiedSchematics()
                raise
            except MemoryError:
                traceback.print_exc()
                mcedit.editor.handleMemoryError()


def main(argv):
    """
    Setup logging, display, bundled schematics. Handle unclean
    shutdowns.
    """
    # Setup file and stderr logging.
    logger = logging.getLogger()
    logger.setLevel(logging.DEBUG)

    fh = logging.FileHandler('mcedit.log')
    fh.setLevel(logging.DEBUG)

    ch = logging.StreamHandler()
    ch.setLevel(logging.ERROR)

    fmt = logging.Formatter(
        '[%(levelname)s][%(lineno)d][%(module)s]:%(message)s'
    )
    fh.setFormatter(fmt)
    ch.setFormatter(fmt)

    logger.addHandler(fh)
    logger.addHandler(ch)

    try:
        display.init()
    except pygame.error, e:
        os.environ['SDL_VIDEODRIVER'] = 'directx'
        try:
            display.init()
        except pygame.error:
            os.environ['SDL_VIDEODRIVER'] = 'windib'
            display.init()

    pygame.font.init()

    try:
        if not os.path.exists(mcplatform.schematicsDir):
            shutil.copytree(
                os.path.join(directories.dataDir, u'stock-schematics'),
                mcplatform.schematicsDir
            )
    except Exception, e:
        logging.warning('Error copying bundled schematics: {0!r}'.format(e))
        try:
            os.mkdir(mcplatform.schematicsDir)
        except Exception, e:
            logging.warning('Error creating schematics folder: {0!r}'.format(e))

    try:
        MCEdit.main()
    except SystemExit:
        return 0
    except Exception, e:
        logging.error('An unhandled error occured.', exc_info=True)
        display.quit()
        return 1
    return 0


class GLDisplayContext(object):
    def __init__(self):
        self.reset()

    def getWindowSize(self):
        w, h = (Settings.windowWidth.get(), Settings.windowHeight.get())
        return max(20, w), max(20, h)

    def displayMode(self):
        displayMode = pygame.OPENGL | pygame.RESIZABLE
        if Settings.doubleBuffer.get():
            displayMode |= pygame.DOUBLEBUF
        return displayMode

    def reset(self):
        pygame.key.set_repeat(500, 100)

        try:
            display.gl_set_attribute(pygame.GL_SWAP_CONTROL, Settings.vsync.get())
        except Exception, e:
            logging.warning('Unable to set vertical sync: {0!r}'.format(e))

        display.gl_set_attribute(pygame.GL_ALPHA_SIZE, 8)

        d = display.set_mode(self.getWindowSize(), self.displayMode())
        try:
            pygame.scrap.init()
        except:
            logging.warning('PyGame clipboard integration disabled.')

        display.set_caption('MCEdit ~ ' + release.release, 'MCEdit')
        if sys.platform == 'win32' and Settings.setWindowPlacement.get():
            Settings.setWindowPlacement.set(False)
            config.saveConfig()
            X, Y = Settings.windowX.get(), Settings.windowY.get()

            if X:
                w, h = self.getWindowSize()
                hwndOwner = display.get_wm_info()['window']

                flags, showCmd, ptMin, ptMax, rect = mcplatform.win32gui.GetWindowPlacement(hwndOwner)
                realW = rect[2] - rect[0]
                realH = rect[3] - rect[1]

                showCmd = Settings.windowShowCmd.get()
                rect = (X, Y, X + realW, Y + realH)

                mcplatform.win32gui.SetWindowPlacement(hwndOwner, (0, showCmd, ptMin, ptMax, rect))

            Settings.setWindowPlacement.set(True)
            config.saveConfig()

        try:
            iconpath = os.path.join(directories.dataDir, 'favicon.png')
            iconfile = file(iconpath, 'rb')
            icon = pygame.image.load(iconfile, 'favicon.png')
            display.set_icon(icon)
        except Exception, e:
            logging.warning('Unable to set icon: {0!r}'.format(e))

        self.display = d

        GL.glEnableClientState(GL.GL_VERTEX_ARRAY)
        GL.glAlphaFunc(GL.GL_NOTEQUAL, 0)
        GL.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA)

        # textures are 256x256, so with this we can specify pixel coordinates
        GL.glMatrixMode(GL.GL_TEXTURE)
        GL.glScale(1 / 256., 1 / 256., 1 / 256.)

        self.loadTextures()

    def getTerrainTexture(self, level):
        return self.terrainTextures.get(level.materials.name, self.terrainTextures["Alpha"])

    def loadTextures(self):
        self.terrainTextures = {}

        def makeTerrainTexture(mats):
            w, h = 1, 1
            teximage = numpy.zeros((w, h, 4), dtype='uint8')
            teximage[:] = 127, 127, 127, 255

            GL.glTexImage2D(
                GL.GL_TEXTURE_2D,
                0,
                GL.GL_RGBA8,
                w,
                h,
                0,
                GL.GL_RGBA,
                GL.GL_UNSIGNED_BYTE,
                teximage
            )

        textures = (
            (pymclevel.classicMaterials, 'terrain-classic.png'),
            (pymclevel.indevMaterials, 'terrain-classic.png'),
            (pymclevel.alphaMaterials, 'terrain.png'),
            (pymclevel.pocketMaterials, 'terrain-pocket.png')
        )

        for mats, matFile in textures:
            try:
                if mats.name == 'Alpha':
                    tex = mceutils.loadAlphaTerrainTexture()
                else:
                    tex = mceutils.loadPNGTexture(matFile)
                self.terrainTextures[mats.name] = tex
            except Exception, e:
                logging.warning(
                    'Unable to load terrain from {0}, using flat colors.'
                    'Error was: {1!r}'.format(matFile, e)
                )
                self.terrainTextures[mats.name] = glutils.Texture(
                    functools.partial(makeTerrainTexture, mats)
                )
            mats.terrainTexture = self.terrainTextures[mats.name]


def weird_fix():
    try:
        from OpenGL.platform import win32
        win32
    except Exception:
        pass

if __name__ == "__main__":
    sys.exit(main(sys.argv))

