loleaflet/src/layer/tile/GridLayer.js | 79 ++++++++++++++++++----------------
1 file changed, 42 insertions(+), 37 deletions(-)
New commits:
commit d35fb55511c1d1d7bc851696dd1655dcb6468602
Author: Tamás Zolnai <tamas.zol...@collabora.com>
Date: Fri Jun 8 13:27:10 2018 +0200
Zooming in for the first time shows tiles appearing instead of interpolation
Drop only those tiles which are not part of the new visible area.
Change-Id: I4cf86266b4f51cd7e96b9db10da108f644ecdceb
Reviewed-on: https://gerrit.libreoffice.org/55467
Reviewed-by: Tamás Zolnai <tamas.zol...@collabora.com>
Tested-by: Tamás Zolnai <tamas.zol...@collabora.com>
diff --git a/loleaflet/src/layer/tile/GridLayer.js
b/loleaflet/src/layer/tile/GridLayer.js
index 8a37a04dd..11fbebed5 100644
--- a/loleaflet/src/layer/tile/GridLayer.js
+++ b/loleaflet/src/layer/tile/GridLayer.js
@@ -542,24 +542,7 @@ L.GridLayer = L.Layer.extend({
if (newView) {
// we know that a new set of tiles that cover
the whole view has been requested
// so we're able to cancel the previous
requests that are being processed
- this._map._socket.sendMessage('canceltiles');
- for (key in this._tiles) {
- // When _invalidCount > 0 the tile has
been invalidated, however the new tile content
- // has not yet been fetched and because
of `canceltiles` message it will never be
- // so we need to remove the tile, or
when the tile is back inside the visible area
- // its content would be the old
invalidated one;
- // example: a tile is invalidated but a
sudden scroll to the cell cursor position causes
- // to move the tile out of the visible
area before the new content is fetched
- if (!this._tiles[key].loaded ||
this._tiles[key]._invalidCount > 0) {
-
L.DomUtil.remove(this._tiles[key].el);
- delete this._tiles[key];
- if (this._debug) {
-
this._debugCancelledTiles++;
-
this._debugShowTileData();
- }
- }
- }
- this._emptyTilesCount = 0;
+ this._cancelTiles();
}
// if its the first batch of tiles to load
@@ -620,25 +603,7 @@ L.GridLayer = L.Layer.extend({
if (newView) {
// we know that a new set of tiles that cover
the whole view has been requested
// so we're able to cancel the previous
requests that are being processed
- this._map._socket.sendMessage('canceltiles');
- for (key in this._tiles) {
- tile = this._tiles[key];
- // When _invalidCount > 0 the tile has
been invalidated, however the new tile content
- // has not yet been fetched and because
of `canceltiles` message it will never be
- // so we need to remove the tile, or
when the tile is back inside the visible area
- // its content would be the old
invalidated one;
- // example: a tile is invalidated but a
sudden scroll to the cell cursor position causes
- // to move the tile out of the visible
area before the new content is fetched
- if (!tile.loaded || tile._invalidCount
> 0) {
- L.DomUtil.remove(tile.el);
- delete this._tiles[key];
- if (this._debug &&
this._debugDataCancelledTiles) {
-
this._debugCancelledTiles++;
-
this._debugDataCancelledTiles.setPrefix('Cancelled tiles: ' +
this._debugCancelledTiles);
- }
- }
- }
- this._emptyTilesCount = 0;
+ this._cancelTiles();
}
// if its the first batch of tiles to load
@@ -719,6 +684,46 @@ L.GridLayer = L.Layer.extend({
}
},
+ _cancelTiles: function() {
+ this._map._socket.sendMessage('canceltiles');
+ for (var key in this._tiles) {
+ var tile = this._tiles[key];
+ // When _invalidCount > 0 the tile has been
invalidated, however the new tile content
+ // has not yet been fetched and because of
`canceltiles` message it will never be
+ // so we need to remove the tile, or when the tile is
back inside the visible area
+ // its content would be the old invalidated one. Drop
only those tiles which are not in
+ // the new visible area.
+ // example: a tile is invalidated but a sudden scroll
to the cell cursor position causes
+ // to move the tile out of the visible area before the
new content is fetched
+
+ var dropTile = !tile.loaded;
+ var coords = tile.coords;
+ if (coords.part === this._selectedPart) {
+ var visibleTopLeft =
this._latLngToTwips(this._map.getBounds().getNorthWest());
+ var visibleBottomRight =
this._latLngToTwips(this._map.getBounds().getSouthEast());
+ var visibleArea = new L.Bounds(visibleTopLeft,
visibleBottomRight);
+ var tileTopLeft = this._coordsToTwips(coords);
+ var tileBottomRight = new
L.Point(this._tileWidthTwips, this._tileHeightTwips);
+ var tileBounds = new L.Bounds(tileTopLeft,
tileTopLeft.add(tileBottomRight));
+ dropTile |= (tile._invalidCount > 0 &&
!visibleArea.intersects(tileBounds));
+ }
+ else {
+ dropTile |= tile._invalidCount > 0;
+ }
+
+
+ if (dropTile) {
+ L.DomUtil.remove(tile.el);
+ delete this._tiles[key];
+ if (this._debug &&
this._debugDataCancelledTiles) {
+ this._debugCancelledTiles++;
+
this._debugDataCancelledTiles.setPrefix('Cancelled tiles: ' +
this._debugCancelledTiles);
+ }
+ }
+ }
+ this._emptyTilesCount = 0;
+ },
+
_isValidTile: function (coords) {
if (coords.x < 0 || coords.y < 0) {
return false;
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