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make it possible to pan the map while drawing geometries, r=tschaub (closes #3052)

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@11381 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Éric Lemoine
2011-02-24 09:00:49 +00:00
parent f8db509725
commit 30aeab365a
11 changed files with 1665 additions and 309 deletions
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70
lib/OpenLayers/Handler/Path.js
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@@ -79,6 +79,9 @@ OpenLayers.Handler.Path = OpenLayers.Class(OpenLayers.Handler.Point, {
* feature.
*/
createFeature: function(pixel) {
if(!pixel) {
pixel = new OpenLayers.Pixel(-50, -50);
}
var lonlat = this.control.map.getLonLatFromPixel(pixel);
this.point = new OpenLayers.Feature.Vector(
new OpenLayers.Geometry.Point(lonlat.lon, lonlat.lat)
@@ -100,6 +103,17 @@ OpenLayers.Handler.Path = OpenLayers.Class(OpenLayers.Handler.Point, {
this.line = null;
},
/**
* Method: destroyPersistedFeature
* Destroy the persisted feature.
*/
destroyPersistedFeature: function() {
var layer = this.layer;
if(layer && layer.features.length > 2) {
this.layer.features[0].destroy();
}
},
/**
* Method: removePoint
* Destroy the temporary point.
@@ -151,12 +165,13 @@ OpenLayers.Handler.Path = OpenLayers.Class(OpenLayers.Handler.Point, {
* Parameters:
* pixel - {<OpenLayers.Pixel>} The updated pixel location for the latest
* point.
* drawing - {Boolean} Indicate if we're currently drawing.
*/
modifyFeature: function(pixel) {
modifyFeature: function(pixel, drawing) {
var lonlat = this.control.map.getLonLatFromPixel(pixel);
this.point.geometry.x = lonlat.lon;
this.point.geometry.y = lonlat.lat;
this.callback("modify", [this.point.geometry, this.getSketch()]);
this.callback("modify", [this.point.geometry, this.getSketch(), drawing]);
this.point.geometry.clearBounds();
this.drawFeature();
},
@@ -209,22 +224,17 @@ OpenLayers.Handler.Path = OpenLayers.Class(OpenLayers.Handler.Point, {
* {Boolean} Allow event propagation
*/
mousedown: function(evt) {
// ignore double-clicks
if (this.lastDown && this.lastDown.equals(evt.xy)) {
return false;
var stopDown = this.stopDown;
if(this.freehandMode(evt)) {
stopDown = true;
}
if(this.lastDown == null) {
if(this.persist) {
this.destroyFeature();
}
this.createFeature(evt.xy);
} else if((this.lastUp == null) || !this.lastUp.equals(evt.xy)) {
this.addPoint(evt.xy);
if(!this.lastDown || !this.lastDown.equals(evt.xy)) {
this.modifyFeature(evt.xy, !!this.lastUp);
}
this.mouseDown = true;
this.lastDown = evt.xy;
this.drawing = true;
return false;
this.stoppedDown = stopDown;
return !stopDown;
},
/**
@@ -239,12 +249,15 @@ OpenLayers.Handler.Path = OpenLayers.Class(OpenLayers.Handler.Point, {
* {Boolean} Allow event propagation
*/
mousemove: function (evt) {
if(this.drawing) {
if(this.mouseDown && this.freehandMode(evt)) {
this.addPoint(evt.xy);
} else {
this.modifyFeature(evt.xy);
if(this.stoppedDown && this.freehandMode(evt)) {
if(this.persist) {
this.destroyPersistedFeature();
}
this.addPoint(evt.xy);
return false;
}
if(!this.mouseDown || this.stoppedDown) {
this.modifyFeature(evt.xy, !!this.lastUp);
}
return true;
},
@@ -261,20 +274,23 @@ OpenLayers.Handler.Path = OpenLayers.Class(OpenLayers.Handler.Point, {
* {Boolean} Allow event propagation
*/
mouseup: function (evt) {
this.mouseDown = false;
if(this.drawing) {
if(this.freehandMode(evt)) {
if(this.mouseDown && (!this.lastUp || !this.lastUp.equals(evt.xy))) {
if(this.stoppedDown && this.freehandMode(evt)) {
this.removePoint();
this.finalize();
} else {
if(this.lastUp == null) {
this.addPoint(evt.xy);
if(this.lastDown.equals(evt.xy)) {
if(this.lastUp == null && this.persist) {
this.destroyPersistedFeature();
}
this.addPoint(evt.xy);
this.lastUp = evt.xy;
}
this.lastUp = evt.xy;
}
return false;
}
return true;
this.stoppedDown = this.stopDown;
this.mouseDown = false;
return !this.stopUp;
},
/**