var $, Canvas, CartesianFrame, DataRange1d, EQ, GE, GlyphRenderer, LayoutCanvas, LayoutDOM, PlotCanvas, PlotCanvasView, Renderer, UIEvents, _, build_views, enums, global_gl_canvas, logger, p, ref, throttle, update_panel_constraints,
  bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
  extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
  hasProp = {}.hasOwnProperty,
  indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; };

_ = require("underscore");

$ = require("jquery");

Canvas = require("../canvas/canvas");

CartesianFrame = require("../canvas/cartesian_frame");

DataRange1d = require("../ranges/data_range1d");

GlyphRenderer = require("../renderers/glyph_renderer");

LayoutDOM = require("../layouts/layout_dom");

Renderer = require("../renderers/renderer");

build_views = require("../../common/build_views");

UIEvents = require("../../common/ui_events");

enums = require("../../core/enums");

LayoutCanvas = require("../../core/layout/layout_canvas");

ref = require("../../core/layout/solver"), EQ = ref.EQ, GE = ref.GE;

logger = require("../../core/logging").logger;

p = require("../../core/properties");

throttle = require("../../core/util/throttle").throttle;

update_panel_constraints = require("../../core/layout/side_panel").update_constraints;

global_gl_canvas = null;

PlotCanvasView = (function(superClass) {
  extend(PlotCanvasView, superClass);

  function PlotCanvasView() {
    this.remove = bind(this.remove, this);
    this.request_render = bind(this.request_render, this);
    return PlotCanvasView.__super__.constructor.apply(this, arguments);
  }

  PlotCanvasView.prototype.className = "bk-plot-wrapper";

  PlotCanvasView.prototype.state = {
    history: [],
    index: -1
  };

  PlotCanvasView.prototype.view_options = function() {
    return _.extend({
      plot_model: this.model,
      plot_view: this
    }, this.options);
  };

  PlotCanvasView.prototype.pause = function() {
    return this.is_paused = true;
  };

  PlotCanvasView.prototype.unpause = function() {
    this.is_paused = false;
    return this.request_render();
  };

  PlotCanvasView.prototype.request_render = function() {
    if (!this.is_paused) {
      this.throttled_render();
    }
  };

  PlotCanvasView.prototype.remove = function() {
    var id, ref1, results, tool_view;
    PlotCanvasView.__super__.remove.call(this);
    ref1 = this.tool_views;
    results = [];
    for (id in ref1) {
      tool_view = ref1[id];
      results.push(tool_view.remove());
    }
    return results;
  };

  PlotCanvasView.prototype.initialize = function(options) {
    var j, l, len, len1, level, name, prefix, ref1, ref2, ref3, spec;
    PlotCanvasView.__super__.initialize.call(this, options);
    this.pause();
    this.visuals = {};
    ref1 = this.model.plot.mixins;
    for (j = 0, len = ref1.length; j < len; j++) {
      spec = ref1[j];
      ref2 = spec.split(":"), name = ref2[0], prefix = ref2[1];
      if (prefix == null) {
        prefix = "";
      }
      this.visuals[prefix + name] = new Renderer.Visuals[name]({
        obj: this.model.plot,
        prefix: prefix
      });
    }
    this._initial_state_info = {
      range: null,
      selection: {},
      dimensions: {
        width: this.mget("canvas").get("width"),
        height: this.mget("canvas").get("height")
      }
    };
    this.frame = this.mget('frame');
    this.x_range = this.frame.get('x_ranges')['default'];
    this.y_range = this.frame.get('y_ranges')['default'];
    this.xmapper = this.frame.get('x_mappers')['default'];
    this.ymapper = this.frame.get('y_mappers')['default'];
    this.canvas = this.mget('canvas');
    this.canvas_view = new this.canvas.default_view({
      'model': this.canvas
    });
    this.$el.append(this.canvas_view.el);
    this.canvas_view.render(true);
    if (this.model.plot.webgl || window.location.search.indexOf('webgl=1') > 0) {
      if (window.location.search.indexOf('webgl=0') === -1) {
        this.init_webgl();
      }
    }
    this.throttled_render = throttle(this.render, 15);
    if (this.model.document._unrendered_plots == null) {
      this.model.document._unrendered_plots = {};
    }
    this.model.document._unrendered_plots[this.id] = true;
    this.ui_event_bus = new UIEvents({
      toolbar: this.mget('toolbar'),
      hit_area: this.canvas_view.$el
    });
    this.renderer_views = {};
    this.tool_views = {};
    this.levels = {};
    ref3 = enums.RenderLevel;
    for (l = 0, len1 = ref3.length; l < len1; l++) {
      level = ref3[l];
      this.levels[level] = {};
    }
    this.build_levels();
    this.bind_bokeh_events();
    this.update_dataranges();
    this.unpause();
    logger.debug("PlotView initialized");
    return this;
  };

  PlotCanvasView.prototype.get_canvas_element = function() {
    return this.canvas_view.ctx.canvas;
  };

  PlotCanvasView.prototype.init_webgl = function() {
    var ctx, glcanvas, opts;
    ctx = this.canvas_view.ctx;
    glcanvas = global_gl_canvas;
    if (glcanvas == null) {
      global_gl_canvas = glcanvas = document.createElement('canvas');
      opts = {
        'premultipliedAlpha': true
      };
      glcanvas.gl = glcanvas.getContext("webgl", opts) || glcanvas.getContext("experimental-webgl", opts);
    }
    if (glcanvas.gl != null) {
      return ctx.glcanvas = glcanvas;
    } else {
      return logger.warn('WebGL is not supported, falling back to 2D canvas.');
    }
  };

  PlotCanvasView.prototype.prepare_webgl = function(ratio, frame_box) {
    var canvas, ctx, flipped_top, gl;
    ctx = this.canvas_view.ctx;
    canvas = this.canvas_view.get_canvas_element();
    if (ctx.glcanvas) {
      ctx.glcanvas.width = canvas.width;
      ctx.glcanvas.height = canvas.height;
      gl = ctx.glcanvas.gl;
      gl.viewport(0, 0, ctx.glcanvas.width, ctx.glcanvas.height);
      gl.clearColor(0, 0, 0, 0);
      gl.clear(gl.COLOR_BUFFER_BIT || gl.DEPTH_BUFFER_BIT);
      gl.enable(gl.SCISSOR_TEST);
      flipped_top = ctx.glcanvas.height - ratio * (frame_box[1] + frame_box[3]);
      gl.scissor(ratio * frame_box[0], flipped_top, ratio * frame_box[2], ratio * frame_box[3]);
      gl.enable(gl.BLEND);
      return gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE_MINUS_DST_ALPHA, gl.ONE);
    }
  };

  PlotCanvasView.prototype.blit_webgl = function(ratio) {
    var ctx;
    ctx = this.canvas_view.ctx;
    if (ctx.glcanvas) {
      logger.debug('drawing with WebGL');
      ctx.restore();
      ctx.drawImage(ctx.glcanvas, 0, 0);
      ctx.save();
      ctx.scale(ratio, ratio);
      return ctx.translate(0.5, 0.5);
    }
  };

  PlotCanvasView.prototype.update_dataranges = function() {
    var bds, bounds, follow_enabled, frame, has_bounds, j, k, l, len, len1, len2, len3, m, n, ref1, ref2, ref3, ref4, ref5, ref6, v, xr, yr;
    frame = this.model.frame;
    bounds = {};
    ref1 = this.renderer_views;
    for (k in ref1) {
      v = ref1[k];
      bds = (ref2 = v.glyph) != null ? typeof ref2.bounds === "function" ? ref2.bounds() : void 0 : void 0;
      if (bds != null) {
        bounds[k] = bds;
      }
    }
    follow_enabled = false;
    has_bounds = false;
    ref3 = _.values(frame.get('x_ranges'));
    for (j = 0, len = ref3.length; j < len; j++) {
      xr = ref3[j];
      if (xr instanceof DataRange1d.Model) {
        xr.update(bounds, 0, this.model.id);
        if (xr.get('follow')) {
          follow_enabled = true;
        }
      }
      if (xr.get('bounds') != null) {
        has_bounds = true;
      }
    }
    ref4 = _.values(frame.get('y_ranges'));
    for (l = 0, len1 = ref4.length; l < len1; l++) {
      yr = ref4[l];
      if (yr instanceof DataRange1d.Model) {
        yr.update(bounds, 1, this.model.id);
        if (yr.get('follow')) {
          follow_enabled = true;
        }
      }
      if (yr.get('bounds') != null) {
        has_bounds = true;
      }
    }
    if (follow_enabled && has_bounds) {
      logger.warn('Follow enabled so bounds are unset.');
      ref5 = _.values(frame.get('x_ranges'));
      for (m = 0, len2 = ref5.length; m < len2; m++) {
        xr = ref5[m];
        xr.set('bounds', null);
      }
      ref6 = _.values(frame.get('y_ranges'));
      for (n = 0, len3 = ref6.length; n < len3; n++) {
        yr = ref6[n];
        yr.set('bounds', null);
      }
    }
    return this.range_update_timestamp = Date.now();
  };

  PlotCanvasView.prototype.map_to_screen = function(x, y, x_name, y_name) {
    if (x_name == null) {
      x_name = 'default';
    }
    if (y_name == null) {
      y_name = 'default';
    }
    return this.frame.map_to_screen(x, y, this.canvas, x_name, y_name);
  };

  PlotCanvasView.prototype.push_state = function(type, info) {
    var prev_info, ref1;
    prev_info = ((ref1 = this.state.history[this.state.index]) != null ? ref1.info : void 0) || {};
    info = _.extend({}, this._initial_state_info, prev_info, info);
    this.state.history.slice(0, this.state.index + 1);
    this.state.history.push({
      type: type,
      info: info
    });
    this.state.index = this.state.history.length - 1;
    return this.trigger("state_changed");
  };

  PlotCanvasView.prototype.clear_state = function() {
    this.state = {
      history: [],
      index: -1
    };
    return this.trigger("state_changed");
  };

  PlotCanvasView.prototype.can_undo = function() {
    return this.state.index >= 0;
  };

  PlotCanvasView.prototype.can_redo = function() {
    return this.state.index < this.state.history.length - 1;
  };

  PlotCanvasView.prototype.undo = function() {
    if (this.can_undo()) {
      this.state.index -= 1;
      this._do_state_change(this.state.index);
      return this.trigger("state_changed");
    }
  };

  PlotCanvasView.prototype.redo = function() {
    if (this.can_redo()) {
      this.state.index += 1;
      this._do_state_change(this.state.index);
      return this.trigger("state_changed");
    }
  };

  PlotCanvasView.prototype._do_state_change = function(index) {
    var info, ref1;
    info = ((ref1 = this.state.history[index]) != null ? ref1.info : void 0) || this._initial_state_info;
    if (info.range != null) {
      this.update_range(info.range);
    }
    if (info.selection != null) {
      this.update_selection(info.selection);
    }
    if (info.dimensions != null) {
      return this.canvas_view.set_dims([info.dimensions.width, info.dimensions.height]);
    }
  };

  PlotCanvasView.prototype.reset_dimensions = function() {
    return this.update_dimensions(this.canvas.initial_width, this.canvas.initial_height);
  };

  PlotCanvasView.prototype.update_dimensions = function(width, height) {
    this.pause();
    this.model.plot.width = width;
    this.model.plot.height = height;
    this.model.document.resize();
    return this.unpause();
  };

  PlotCanvasView.prototype.get_selection = function() {
    var j, len, ref1, renderer, selected, selection;
    selection = [];
    ref1 = this.model.plot.renderers;
    for (j = 0, len = ref1.length; j < len; j++) {
      renderer = ref1[j];
      if (renderer instanceof GlyphRenderer.Model) {
        selected = renderer.get('data_source').get("selected");
        selection[renderer.id] = selected;
      }
    }
    return selection;
  };

  PlotCanvasView.prototype.update_selection = function(selection) {
    var ds, j, len, ref1, ref2, renderer, results;
    ref1 = this.model.plot.renderers;
    results = [];
    for (j = 0, len = ref1.length; j < len; j++) {
      renderer = ref1[j];
      if (!(renderer instanceof GlyphRenderer.Model)) {
        continue;
      }
      ds = renderer.get('data_source');
      if (selection != null) {
        if (ref2 = renderer.id, indexOf.call(selection, ref2) >= 0) {
          results.push(ds.set("selected", selection[renderer.id]));
        } else {
          results.push(void 0);
        }
      } else {
        results.push(ds.get('selection_manager').clear());
      }
    }
    return results;
  };

  PlotCanvasView.prototype.reset_selection = function() {
    return this.update_selection(null);
  };

  PlotCanvasView.prototype._update_ranges_together = function(range_info_iter) {
    var j, l, len, len1, range_info, ref1, ref2, results, rng, weight;
    weight = 1.0;
    for (j = 0, len = range_info_iter.length; j < len; j++) {
      ref1 = range_info_iter[j], rng = ref1[0], range_info = ref1[1];
      weight = Math.min(weight, this._get_weight_to_constrain_interval(rng, range_info));
    }
    if (weight < 1) {
      results = [];
      for (l = 0, len1 = range_info_iter.length; l < len1; l++) {
        ref2 = range_info_iter[l], rng = ref2[0], range_info = ref2[1];
        range_info['start'] = weight * range_info['start'] + (1 - weight) * rng.get('start');
        results.push(range_info['end'] = weight * range_info['end'] + (1 - weight) * rng.get('end'));
      }
      return results;
    }
  };

  PlotCanvasView.prototype._update_ranges_individually = function(range_info_iter, is_panning, is_scrolling) {
    var hit_bound, j, l, len, len1, max, min, new_interval, range_info, ref1, ref2, ref3, results, reversed, rng, weight;
    hit_bound = false;
    for (j = 0, len = range_info_iter.length; j < len; j++) {
      ref1 = range_info_iter[j], rng = ref1[0], range_info = ref1[1];
      reversed = rng.get('start') > rng.get('end');
      if (!is_scrolling) {
        weight = this._get_weight_to_constrain_interval(rng, range_info);
        if (weight < 1) {
          range_info['start'] = weight * range_info['start'] + (1 - weight) * rng.get('start');
          range_info['end'] = weight * range_info['end'] + (1 - weight) * rng.get('end');
        }
      }
      if (rng.get('bounds') != null) {
        min = rng.get('bounds')[0];
        max = rng.get('bounds')[1];
        new_interval = Math.abs(range_info['end'] - range_info['start']);
        if (reversed) {
          if (min != null) {
            if (min >= range_info['end']) {
              hit_bound = true;
              range_info['end'] = min;
              if ((is_panning != null) || (is_scrolling != null)) {
                range_info['start'] = min + new_interval;
              }
            }
          }
          if (max != null) {
            if (max <= range_info['start']) {
              hit_bound = true;
              range_info['start'] = max;
              if ((is_panning != null) || (is_scrolling != null)) {
                range_info['end'] = max - new_interval;
              }
            }
          }
        } else {
          if (min != null) {
            if (min >= range_info['start']) {
              hit_bound = true;
              range_info['start'] = min;
              if ((is_panning != null) || (is_scrolling != null)) {
                range_info['end'] = min + new_interval;
              }
            }
          }
          if (max != null) {
            if (max <= range_info['end']) {
              hit_bound = true;
              range_info['end'] = max;
              if ((is_panning != null) || (is_scrolling != null)) {
                range_info['start'] = max - new_interval;
              }
            }
          }
        }
      }
    }
    if (is_scrolling && hit_bound) {
      return;
    }
    results = [];
    for (l = 0, len1 = range_info_iter.length; l < len1; l++) {
      ref2 = range_info_iter[l], rng = ref2[0], range_info = ref2[1];
      rng.have_updated_interactively = true;
      if (rng.get('start') !== range_info['start'] || rng.get('end') !== range_info['end']) {
        rng.set(range_info);
        results.push((ref3 = rng.get('callback')) != null ? ref3.execute(rng) : void 0);
      } else {
        results.push(void 0);
      }
    }
    return results;
  };

  PlotCanvasView.prototype._get_weight_to_constrain_interval = function(rng, range_info) {
    var max, max_interval, max_interval2, min, min_interval, new_interval, old_interval, ref1, weight;
    min_interval = rng.get('min_interval');
    max_interval = rng.get('max_interval');
    weight = 1.0;
    if (rng.get('bounds') != null) {
      ref1 = rng.get('bounds'), min = ref1[0], max = ref1[1];
      if ((min != null) && (max != null)) {
        max_interval2 = Math.abs(max - min);
        max_interval = max_interval != null ? Math.min(max_interval, max_interval2) : max_interval2;
      }
    }
    if ((min_interval != null) || (max_interval != null)) {
      old_interval = Math.abs(rng.get('end') - rng.get('start'));
      new_interval = Math.abs(range_info['end'] - range_info['start']);
      if (min_interval > 0 && new_interval < min_interval) {
        weight = (old_interval - min_interval) / (old_interval - new_interval);
      }
      if (max_interval > 0 && new_interval > max_interval) {
        weight = (max_interval - old_interval) / (new_interval - old_interval);
      }
      weight = Math.max(0.0, Math.min(1.0, weight));
    }
    return weight;
  };

  PlotCanvasView.prototype.update_range = function(range_info, is_panning, is_scrolling) {
    var name, range_info_iter, ref1, ref2, ref3, ref4, ref5, ref6, rng;
    this.pause;
    if (range_info == null) {
      ref1 = this.frame.get('x_ranges');
      for (name in ref1) {
        rng = ref1[name];
        rng.reset();
        if ((ref2 = rng.get('callback')) != null) {
          ref2.execute(rng);
        }
      }
      ref3 = this.frame.get('y_ranges');
      for (name in ref3) {
        rng = ref3[name];
        rng.reset();
        if ((ref4 = rng.get('callback')) != null) {
          ref4.execute(rng);
        }
      }
      this.update_dataranges();
    } else {
      range_info_iter = [];
      ref5 = this.frame.get('x_ranges');
      for (name in ref5) {
        rng = ref5[name];
        range_info_iter.push([rng, range_info.xrs[name]]);
      }
      ref6 = this.frame.get('y_ranges');
      for (name in ref6) {
        rng = ref6[name];
        range_info_iter.push([rng, range_info.yrs[name]]);
      }
      if (is_scrolling) {
        this._update_ranges_together(range_info_iter);
      }
      this._update_ranges_individually(range_info_iter, is_panning, is_scrolling);
    }
    return this.unpause();
  };

  PlotCanvasView.prototype.reset_range = function() {
    return this.update_range(null);
  };

  PlotCanvasView.prototype.build_levels = function() {
    var id_, j, l, len, len1, len2, len3, level, m, n, old_renderers, ref1, renderer_models, renderers_to_remove, synthetic, tool_model, tool_view, tool_views, v, views;
    renderer_models = this.model.plot.renderers;
    ref1 = this.model.plot.toolbar.tools;
    for (j = 0, len = ref1.length; j < len; j++) {
      tool_model = ref1[j];
      synthetic = tool_model.get("synthetic_renderers");
      renderer_models = renderer_models.concat(synthetic);
    }
    old_renderers = _.keys(this.renderer_views);
    views = build_views(this.renderer_views, renderer_models, this.view_options());
    renderers_to_remove = _.difference(old_renderers, _.pluck(renderer_models, 'id'));
    for (l = 0, len1 = renderers_to_remove.length; l < len1; l++) {
      id_ = renderers_to_remove[l];
      delete this.levels.glyph[id_];
    }
    tool_views = build_views(this.tool_views, this.model.plot.toolbar.tools, this.view_options());
    for (m = 0, len2 = views.length; m < len2; m++) {
      v = views[m];
      level = v.mget('level');
      this.levels[level][v.model.id] = v;
      v.bind_bokeh_events();
    }
    for (n = 0, len3 = tool_views.length; n < len3; n++) {
      tool_view = tool_views[n];
      level = tool_view.mget('level');
      this.levels[level][tool_view.model.id] = tool_view;
      tool_view.bind_bokeh_events();
      this.ui_event_bus.register_tool(tool_view);
    }
    return this;
  };

  PlotCanvasView.prototype.bind_bokeh_events = function() {
    var name, ref1, ref2, rng;
    ref1 = this.model.frame.get('x_ranges');
    for (name in ref1) {
      rng = ref1[name];
      this.listenTo(rng, 'change', this.request_render);
    }
    ref2 = this.model.frame.get('y_ranges');
    for (name in ref2) {
      rng = ref2[name];
      this.listenTo(rng, 'change', this.request_render);
    }
    this.listenTo(this.model.plot, 'change:renderers', this.build_levels);
    this.listenTo(this.model.plot.toolbar, 'change:tools', this.build_levels);
    this.listenTo(this.model.plot, 'change', this.request_render);
    this.listenTo(this.model.plot, 'destroy', (function(_this) {
      return function() {
        return _this.remove();
      };
    })(this));
    this.listenTo(this.model.plot.document.solver(), 'layout_update', (function(_this) {
      return function() {
        return _this.request_render();
      };
    })(this));
    this.listenTo(this.model.plot.document.solver(), 'resize', (function(_this) {
      return function() {
        return _this.resize();
      };
    })(this));
    return this.listenTo(this.canvas, 'change:pixel_ratio', (function(_this) {
      return function() {
        return _this.request_render();
      };
    })(this));
  };

  PlotCanvasView.prototype.set_initial_range = function() {
    var good_vals, name, ref1, ref2, rng, xrs, yrs;
    good_vals = true;
    xrs = {};
    ref1 = this.frame.get('x_ranges');
    for (name in ref1) {
      rng = ref1[name];
      if ((rng.get('start') == null) || (rng.get('end') == null) || _.isNaN(rng.get('start') + rng.get('end'))) {
        good_vals = false;
        break;
      }
      xrs[name] = {
        start: rng.get('start'),
        end: rng.get('end')
      };
    }
    if (good_vals) {
      yrs = {};
      ref2 = this.frame.get('y_ranges');
      for (name in ref2) {
        rng = ref2[name];
        if ((rng.get('start') == null) || (rng.get('end') == null) || _.isNaN(rng.get('start') + rng.get('end'))) {
          good_vals = false;
          break;
        }
        yrs[name] = {
          start: rng.get('start'),
          end: rng.get('end')
        };
      }
    }
    if (good_vals) {
      this._initial_state_info.range = this.initial_range_info = {
        xrs: xrs,
        yrs: yrs
      };
      return logger.debug("initial ranges set");
    } else {
      return logger.warn('could not set initial ranges');
    }
  };

  PlotCanvasView.prototype.render = function(force_canvas) {
    var ctx, frame_box, k, lod_timeout, ratio, ref1, v;
    if (force_canvas == null) {
      force_canvas = false;
    }
    logger.trace("PlotCanvas.render(force_canvas=" + force_canvas + ") for " + this.model.id);
    if (this.model.document == null) {
      return;
    }
    if (Date.now() - this.interactive_timestamp < this.model.plot.lod_interval) {
      this.interactive = true;
      lod_timeout = this.model.plot.lod_timeout;
      setTimeout((function(_this) {
        return function() {
          if (_this.interactive && (Date.now() - _this.interactive_timestamp) > lod_timeout) {
            _this.interactive = false;
          }
          return _this.request_render();
        };
      })(this), lod_timeout);
    } else {
      this.interactive = false;
    }
    ref1 = this.renderer_views;
    for (k in ref1) {
      v = ref1[k];
      if ((this.range_update_timestamp == null) || v.set_data_timestamp > this.range_update_timestamp) {
        this.update_dataranges();
        break;
      }
    }
    this.update_constraints();
    this.model.get('frame')._update_mappers();
    ctx = this.canvas_view.ctx;
    ctx.pixel_ratio = ratio = this.canvas_view.pixel_ratio;
    ctx.save();
    ctx.scale(ratio, ratio);
    ctx.translate(0.5, 0.5);
    frame_box = [this.canvas.vx_to_sx(this.frame.get('left')), this.canvas.vy_to_sy(this.frame.get('top')), this.frame.get('width'), this.frame.get('height')];
    this._map_hook(ctx, frame_box);
    this._paint_empty(ctx, frame_box);
    this.prepare_webgl(ratio, frame_box);
    if (this.visuals.outline_line.doit) {
      this.visuals.outline_line.set_value(ctx);
      ctx.strokeRect.apply(ctx, frame_box);
    }
    this._render_levels(ctx, ['image', 'underlay', 'glyph'], frame_box);
    this.blit_webgl(ratio);
    this._render_levels(ctx, ['annotation'], frame_box);
    this._render_levels(ctx, ['overlay', 'tool']);
    if (this.initial_range_info == null) {
      this.set_initial_range();
    }
    ctx.restore();
    if (this.model.document._unrendered_plots != null) {
      delete this.model.document._unrendered_plots[this.id];
      if (_.isEmpty(this.model.document._unrendered_plots)) {
        this.model.document._unrendered_plots = null;
        return _.delay($.proxy(this.model.document.resize, this.model.document), 1);
      }
    }
  };

  PlotCanvasView.prototype.resize = function() {
    var error, height, silent_error, width;
    width = this.model._width._value;
    height = this.model._height._value;
    this.canvas_view.set_dims([width, height], true);
    this.canvas_view.prepare_canvas();
    try {
      this.update_constraints();
    } catch (error) {
      silent_error = error;
    }
    return this.$el.css({
      position: 'absolute',
      left: this.model._dom_left._value,
      top: this.model._dom_top._value,
      width: this.model._width._value,
      height: this.model._height._value
    });
  };

  PlotCanvasView.prototype.update_constraints = function() {
    var model_id, ref1, s, view;
    s = this.model.document.solver();
    s.suggest_value(this.frame._width, this.canvas.get('width') - 1);
    s.suggest_value(this.frame._height, this.canvas.get('height') - 1);
    ref1 = this.renderer_views;
    for (model_id in ref1) {
      view = ref1[model_id];
      if (view.model.panel != null) {
        update_panel_constraints(view);
      }
    }
    return s.update_variables(false);
  };

  PlotCanvasView.prototype._render_levels = function(ctx, levels, clip_region) {
    var i, indices, j, l, len, len1, len2, level, m, ref1, renderer, renderer_view, renderer_views, sortKey;
    ctx.save();
    if (clip_region != null) {
      ctx.beginPath();
      ctx.rect.apply(ctx, clip_region);
      ctx.clip();
      ctx.beginPath();
    }
    indices = {};
    ref1 = this.model.plot.renderers;
    for (i = j = 0, len = ref1.length; j < len; i = ++j) {
      renderer = ref1[i];
      indices[renderer.id] = i;
    }
    sortKey = function(renderer_view) {
      return indices[renderer_view.model.id];
    };
    for (l = 0, len1 = levels.length; l < len1; l++) {
      level = levels[l];
      renderer_views = _.sortBy(_.values(this.levels[level]), sortKey);
      for (m = 0, len2 = renderer_views.length; m < len2; m++) {
        renderer_view = renderer_views[m];
        renderer_view.render();
      }
    }
    return ctx.restore();
  };

  PlotCanvasView.prototype._map_hook = function(ctx, frame_box) {};

  PlotCanvasView.prototype._paint_empty = function(ctx, frame_box) {
    this.visuals.border_fill.set_value(ctx);
    ctx.fillRect(0, 0, this.canvas_view.mget('width'), this.canvas_view.mget('height'));
    ctx.clearRect.apply(ctx, frame_box);
    this.visuals.background_fill.set_value(ctx);
    return ctx.fillRect.apply(ctx, frame_box);
  };

  return PlotCanvasView;

})(Renderer.View);

PlotCanvas = (function(superClass) {
  extend(PlotCanvas, superClass);

  function PlotCanvas() {
    return PlotCanvas.__super__.constructor.apply(this, arguments);
  }

  PlotCanvas.prototype.type = 'PlotCanvas';

  PlotCanvas.prototype.default_view = PlotCanvasView;

  PlotCanvas.prototype.initialize = function(attrs, options) {
    var ref1;
    PlotCanvas.__super__.initialize.call(this, attrs, options);
    this.canvas = new Canvas.Model({
      map: (ref1 = this.use_map) != null ? ref1 : false,
      initial_width: this.plot.plot_width,
      initial_height: this.plot.plot_height,
      use_hidpi: this.plot.hidpi
    });
    this.frame = new CartesianFrame.Model({
      x_range: this.plot.x_range,
      extra_x_ranges: this.plot.extra_x_ranges,
      x_mapper_type: this.plot.x_mapper_type,
      y_range: this.plot.y_range,
      extra_y_ranges: this.plot.extra_y_ranges,
      y_mapper_type: this.plot.y_mapper_type
    });
    this.above_panel = new LayoutCanvas.Model();
    this.below_panel = new LayoutCanvas.Model();
    this.left_panel = new LayoutCanvas.Model();
    this.right_panel = new LayoutCanvas.Model();
    return logger.debug("PlotCanvas initialized");
  };

  PlotCanvas.prototype.add_renderer_to_canvas_side = function(renderer, side) {
    if (side !== 'center') {
      return renderer.add_panel(side);
    }
  };

  PlotCanvas.prototype._doc_attached = function() {
    this.canvas.attach_document(this.document);
    this.frame.attach_document(this.document);
    this.above_panel.attach_document(this.document);
    this.below_panel.attach_document(this.document);
    this.left_panel.attach_document(this.document);
    this.right_panel.attach_document(this.document);
    return logger.debug("PlotCanvas attached to document");
  };

  PlotCanvas.override({
    sizing_mode: 'stretch_both'
  });

  PlotCanvas.internal({
    plot: [p.Instance],
    toolbar: [p.Instance],
    canvas: [p.Instance],
    frame: [p.Instance]
  });

  PlotCanvas.prototype.get_layoutable_children = function() {
    var children, j, l, layout_renderers, len, len1, r, ref1, side;
    children = [this.above_panel, this.below_panel, this.left_panel, this.right_panel, this.canvas, this.frame];
    ref1 = ['above', 'below', 'left', 'right'];
    for (j = 0, len = ref1.length; j < len; j++) {
      side = ref1[j];
      layout_renderers = this.plot.get(side);
      for (l = 0, len1 = layout_renderers.length; l < len1; l++) {
        r = layout_renderers[l];
        if (r.panel != null) {
          children.push(r.panel);
        }
      }
    }
    return children;
  };

  PlotCanvas.prototype.get_edit_variables = function() {
    var child, edit_variables, j, len, ref1;
    edit_variables = [];
    ref1 = this.get_layoutable_children();
    for (j = 0, len = ref1.length; j < len; j++) {
      child = ref1[j];
      edit_variables = edit_variables.concat(child.get_edit_variables());
    }
    return edit_variables;
  };

  PlotCanvas.prototype.get_constraints = function() {
    var child, constraints, j, len, ref1;
    constraints = PlotCanvas.__super__.get_constraints.call(this);
    constraints = constraints.concat(this._get_constant_constraints());
    constraints = constraints.concat(this._get_side_constraints());
    ref1 = this.get_layoutable_children();
    for (j = 0, len = ref1.length; j < len; j++) {
      child = ref1[j];
      constraints = constraints.concat(child.get_constraints());
    }
    return constraints;
  };

  PlotCanvas.prototype._get_constant_constraints = function() {
    var constraints, min_border_bottom, min_border_left, min_border_right, min_border_top;
    min_border_top = this.plot.min_border_top;
    min_border_bottom = this.plot.min_border_bottom;
    min_border_left = this.plot.min_border_left;
    min_border_right = this.plot.min_border_right;
    constraints = [];
    constraints.push(GE(this.above_panel._height, -min_border_top));
    constraints.push(GE(this.below_panel._height, -min_border_bottom));
    constraints.push(GE(this.left_panel._width, -min_border_left));
    constraints.push(GE(this.right_panel._width, -min_border_right));
    constraints.push(EQ(this.above_panel._top, [-1, this.canvas._top]));
    constraints.push(EQ(this.above_panel._bottom, [-1, this.frame._top]));
    constraints.push(EQ(this.below_panel._bottom, [-1, this.canvas._bottom]));
    constraints.push(EQ(this.below_panel._top, [-1, this.frame._bottom]));
    constraints.push(EQ(this.left_panel._left, [-1, this.canvas._left]));
    constraints.push(EQ(this.left_panel._right, [-1, this.frame._left]));
    constraints.push(EQ(this.right_panel._right, [-1, this.canvas._right]));
    constraints.push(EQ(this.right_panel._left, [-1, this.frame._right]));
    constraints.push(EQ(this.above_panel._height, [-1, this._top]));
    constraints.push(EQ(this.above_panel._height, [-1, this.canvas._top], this.frame._top));
    constraints.push(EQ(this.below_panel._height, [-1, this._height], this._bottom));
    constraints.push(EQ(this.below_panel._height, [-1, this.frame._bottom]));
    constraints.push(EQ(this.left_panel._width, [-1, this._left]));
    constraints.push(EQ(this.left_panel._width, [-1, this.frame._left]));
    constraints.push(EQ(this.right_panel._width, [-1, this._width], this._right));
    constraints.push(EQ(this.right_panel._width, [-1, this.canvas._right], this.frame._right));
    return constraints;
  };

  PlotCanvas.prototype._get_side_constraints = function() {
    var constraints, j, l, last, layout_renderers, len, len1, r, ref1, side;
    constraints = [];
    ref1 = ['above', 'below', 'left', 'right'];
    for (j = 0, len = ref1.length; j < len; j++) {
      side = ref1[j];
      layout_renderers = this.plot.get(side);
      last = this.frame;
      for (l = 0, len1 = layout_renderers.length; l < len1; l++) {
        r = layout_renderers[l];
        if (side === "above") {
          constraints.push(EQ(last.panel._top, [-1, r.panel._bottom]));
        }
        if (side === "below") {
          constraints.push(EQ(last.panel._bottom, [-1, r.panel._top]));
        }
        if (side === "left") {
          constraints.push(EQ(last.panel._left, [-1, r.panel._right]));
        }
        if (side === "right") {
          constraints.push(EQ(last.panel._right, [-1, r.panel._left]));
        }
        last = r;
      }
      if (layout_renderers.length !== 0) {
        if (side === "above") {
          constraints.push(EQ(last.panel._top, [-1, this.above_panel._top]));
        }
        if (side === "below") {
          constraints.push(EQ(last.panel._bottom, [-1, this.below_panel._bottom]));
        }
        if (side === "left") {
          constraints.push(EQ(last.panel._left, [-1, this.left_panel._left]));
        }
        if (side === "right") {
          constraints.push(EQ(last.panel._right, [-1, this.right_panel._right]));
        }
      }
    }
    return constraints;
  };

  PlotCanvas.prototype.plot_canvas = function() {
    return this;
  };

  return PlotCanvas;

})(LayoutDOM.Model);

module.exports = {
  Model: PlotCanvas,
  View: PlotCanvasView
};
