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Draw tiles based on region rather than tile index because it provides more flexibility.

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This commit is contained in:
Jeremy Goecks
2012-06-07 17:43:22 -04:00
parent f8f06c3706
commit 5deadd39cd
1 changed files with 37 additions and 39 deletions
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static/scripts/viz/trackster.js
+37 -39
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@@ -2794,12 +2794,11 @@ extend(DrawableConfig.prototype, {
/**
* Tiles drawn by tracks.
*/
var Tile = function(track, index, resolution, canvas, data) {
var Tile = function(track, region, resolution, canvas, data) {
this.track = track;
this.index = index;
var tile_bounds = this.track._get_tile_bounds(index, resolution);
this.low = tile_bounds[0];
this.high = tile_bounds[1];
this.region = region;
this.low = region.get('start');
this.high = region.get('end');
this.resolution = resolution;
// Wrap element in div for background and explicitly set height. Use canvas
// height attribute because canvas may not have height if it is not in document yet.
@@ -2813,15 +2812,15 @@ var Tile = function(track, index, resolution, canvas, data) {
*/
Tile.prototype.predisplay_actions = function() {};
var SummaryTreeTile = function(track, index, resolution, canvas, data, max_val) {
Tile.call(this, track, index, resolution, canvas, data);
var SummaryTreeTile = function(track, region, resolution, canvas, data, max_val) {
Tile.call(this, track, region, resolution, canvas, data);
this.max_val = max_val;
};
extend(SummaryTreeTile.prototype, Tile.prototype);
var FeatureTrackTile = function(track, index, resolution, canvas, data, w_scale, mode, message, all_slotted, feature_mapper) {
var FeatureTrackTile = function(track, region, resolution, canvas, data, w_scale, mode, message, all_slotted, feature_mapper) {
// Attribute init.
Tile.call(this, track, index, resolution, canvas, data);
Tile.call(this, track, region, resolution, canvas, data);
this.mode = mode;
this.all_slotted = all_slotted;
this.feature_mapper = feature_mapper;
@@ -3586,12 +3585,7 @@ extend(TiledTrack.prototype, Drawable.prototype, Track.prototype, {
draw_helper: function(force, width, tile_index, resolution, parent_element, w_scale, kwargs) {
var track = this,
key = this._gen_tile_cache_key(width, w_scale, tile_index),
tile_bounds = this._get_tile_bounds(tile_index, resolution),
region = new GenomeRegion({
chrom: this.view.chrom,
start: tile_bounds[0],
end: tile_bounds[1]
});
region = this._get_tile_bounds(tile_index, resolution);
// Init kwargs if necessary to avoid having to check if kwargs defined.
if (!kwargs) { kwargs = {}; }
@@ -3646,7 +3640,7 @@ extend(TiledTrack.prototype, Drawable.prototype, Track.prototype, {
canvas.height = height;
var ctx = canvas.getContext('2d');
ctx.translate(this.left_offset, 0);
var tile = track.draw_tile(tile_data, ctx, mode, resolution, tile_index, w_scale, seq_data);
var tile = track.draw_tile(tile_data, ctx, mode, resolution, region, w_scale, seq_data);
// Don't cache, show if no tile.
if (tile !== undefined) {
@@ -3679,11 +3673,11 @@ extend(TiledTrack.prototype, Drawable.prototype, Track.prototype, {
* @param ctx canvas context to draw on
* @param mode mode to draw in
* @param resolution view resolution
* @param tile_index index of tile to be drawn
* @param region region to draw on tile
* @param w_scale pixels per base
* @param ref_seq reference sequence data
*/
draw_tile: function(result, ctx, mode, resolution, tile_index, w_scale, ref_seq) {
draw_tile: function(result, ctx, mode, resolution, region, w_scale, ref_seq) {
console.log("Warning: TiledTrack.draw_tile() not implemented.");
},
/**
@@ -3720,21 +3714,27 @@ extend(TiledTrack.prototype, Drawable.prototype, Track.prototype, {
track.after_show_tile(tile);
},
/**
* Actions to be taken after showing tile.
*/
after_show_tile: function(tile) {},
/**
* Returns tile bounds--tile low and tile high--based on a tile index. Return value is an array
* with values tile_low and tile_high.
* Returns a genome region that corresponds to a tile at a particular resolution
*/
_get_tile_bounds: function(tile_index, resolution) {
var tile_low = Math.floor( tile_index * TILE_SIZE * resolution ),
tile_length = Math.ceil( TILE_SIZE * resolution ),
// Tile high cannot be larger than view.max_high, which the chromosome length.
tile_high = (tile_low + tile_length <= this.view.max_high ? tile_low + tile_length : this.view.max_high);
return [tile_low, tile_high];
return new GenomeRegion({
chrom: this.view.chrom,
start: tile_low,
end: tile_high
});
},
/**
* Utility function that creates a label string describing the region and parameters of a track's tool.
*/
@@ -3930,8 +3930,8 @@ extend(CompositeTrack.prototype, TiledTrack.prototype, {
var track = this,
key = this._gen_tile_cache_key(width, w_scale, tile_index),
tile_bounds = this._get_tile_bounds(tile_index, resolution),
tile_low = tile_bounds[0],
tile_high = tile_bounds[1];
tile_low = tile_bounds.get('start'),
tile_high = tile_bounds.get('end');
// Init kwargs if necessary to avoid having to check if kwargs defined.
if (!kwargs) { kwargs = {}; }
@@ -3980,8 +3980,8 @@ extend(CompositeTrack.prototype, TiledTrack.prototype, {
var
canvas = track.view.canvas_manager.new_canvas(),
tile_bounds = track._get_tile_bounds(tile_index, resolution),
tile_low = tile_bounds[0],
tile_high = tile_bounds[1],
tile_low = tile_bounds.get('start'),
tile_high = tile_bounds.get('end'),
all_data_index = 0,
width = Math.ceil( (tile_high - tile_low) * w_scale ) + this.left_offset,
height = 0,
@@ -4021,7 +4021,7 @@ extend(CompositeTrack.prototype, TiledTrack.prototype, {
track = this.drawables[i];
tile_data = all_data[ all_data_index ];
seq_data = all_data[ all_data_index + 1 ];
tile = track.draw_tile(tile_data, ctx, track_modes[i], resolution, tile_index, w_scale, seq_data);
tile = track.draw_tile(tile_data, ctx, track_modes[i], resolution, tile_bounds, w_scale, seq_data);
}
// Don't cache, show if no tile.
@@ -4148,7 +4148,7 @@ extend(ReferenceTrack.prototype, Drawable.prototype, TiledTrack.prototype, {
/**
* Draw ReferenceTrack tile.
*/
draw_tile: function(seq, ctx, mode, resolution, tile_index, w_scale) {
draw_tile: function(seq, ctx, mode, resolution, region, w_scale) {
var track = this;
if (w_scale > this.view.canvas_manager.char_width_px) {
@@ -4165,7 +4165,7 @@ extend(ReferenceTrack.prototype, Drawable.prototype, TiledTrack.prototype, {
ctx.fillText(seq[c], c_start, 10);
}
this.show_contents();
return new Tile(track, tile_index, resolution, canvas, seq);
return new Tile(track, region, resolution, canvas, seq);
}
this.hide_contents();
}
@@ -4294,17 +4294,16 @@ extend(LineTrack.prototype, Drawable.prototype, TiledTrack.prototype, {
/**
* Draw LineTrack tile.
*/
draw_tile: function(result, ctx, mode, resolution, tile_index, w_scale) {
draw_tile: function(result, ctx, mode, resolution, region, w_scale) {
// Paint onto canvas.
var
canvas = ctx.canvas,
tile_bounds = this._get_tile_bounds(tile_index, resolution),
tile_low = tile_bounds[0],
tile_high = tile_bounds[1],
tile_low = region.get('start'),
tile_high = region.get('end'),
painter = new painters.LinePainter(result.data, tile_low, tile_high, this.prefs, mode);
painter.draw(ctx, canvas.width, canvas.height, w_scale);
return new Tile(this, tile_index, resolution, canvas, result.data);
return new Tile(this, region, resolution, canvas, result.data);
},
/**
* LineTrack data cannot currently be subsetted.
@@ -4682,16 +4681,15 @@ extend(FeatureTrack.prototype, Drawable.prototype, TiledTrack.prototype, {
* @param cxt canvas context to draw on
* @param mode mode to draw in
* @param resolution view resolution
* @param tile_index index of tile to be drawn
* @param region region to draw on tile
* @param w_scale pixels per base
* @param ref_seq reference sequence data
*/
draw_tile: function(result, ctx, mode, resolution, tile_index, w_scale, ref_seq) {
draw_tile: function(result, ctx, mode, resolution, region, w_scale, ref_seq) {
var track = this,
canvas = ctx.canvas,
tile_bounds = this._get_tile_bounds(tile_index, resolution),
tile_low = tile_bounds[0],
tile_high = tile_bounds[1],
tile_low = region.get('start'),
tile_high = region.get('end'),
min_height = 25,
left_offset = this.left_offset;
@@ -4761,7 +4759,7 @@ extend(FeatureTrack.prototype, Drawable.prototype, TiledTrack.prototype, {
feature_mapper.translation = -left_offset;
}
return new FeatureTrackTile(track, tile_index, resolution, canvas, result.data, w_scale, mode, result.message, all_slotted, feature_mapper);
return new FeatureTrackTile(track, region, resolution, canvas, result.data, w_scale, mode, result.message, all_slotted, feature_mapper);
},
/**
* Returns true if data is compatible with a given mode.