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Move min and max ratios to the overview map control

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This commit is contained in:
Tim Schaub
2017-12-12 16:32:03 -07:00
parent 34c132a67e
commit 4b0dad27f5
2 changed files with 23 additions and 26 deletions
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31
src/ol/control/OverviewMap.js
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@@ -1,7 +1,7 @@
/**
* @module ol/control/OverviewMap
*/
import {OVERVIEWMAP_MAX_RATIO, OVERVIEWMAP_MIN_RATIO, inherits} from '../index.js';
import {inherits} from '../index.js';
import _ol_Collection_ from '../Collection.js';
import _ol_PluggableMap_ from '../PluggableMap.js';
import _ol_MapEventType_ from '../MapEventType.js';
@@ -19,6 +19,21 @@ import _ol_events_ from '../events.js';
import _ol_events_EventType_ from '../events/EventType.js';
import _ol_extent_ from '../extent.js';
/**
* @type {number} Maximum width and/or height extent ratio that determines
* when the overview map should be zoomed out.
*/
var MAX_RATIO = 0.75;
/**
* @type {number} Minimum width and/or height extent ratio that determines
* when the overview map should be zoomed in.
*/
var MIN_RATIO = 0.1;
/**
* Create a new control with a map acting as an overview map for an other
* defined map.
@@ -336,10 +351,10 @@ _ol_control_OverviewMap_.prototype.validateExtent_ = function() {
var ovmapWidth = ovmapSize[0];
var ovmapHeight = ovmapSize[1];
if (boxWidth < ovmapWidth * OVERVIEWMAP_MIN_RATIO ||
boxHeight < ovmapHeight * OVERVIEWMAP_MIN_RATIO ||
boxWidth > ovmapWidth * OVERVIEWMAP_MAX_RATIO ||
boxHeight > ovmapHeight * OVERVIEWMAP_MAX_RATIO) {
if (boxWidth < ovmapWidth * MIN_RATIO ||
boxHeight < ovmapHeight * MIN_RATIO ||
boxWidth > ovmapWidth * MAX_RATIO ||
boxHeight > ovmapHeight * MAX_RATIO) {
this.resetExtent_();
} else if (!_ol_extent_.containsExtent(ovextent, extent)) {
this.recenter_();
@@ -353,7 +368,7 @@ _ol_control_OverviewMap_.prototype.validateExtent_ = function() {
* @private
*/
_ol_control_OverviewMap_.prototype.resetExtent_ = function() {
if (OVERVIEWMAP_MAX_RATIO === 0 || OVERVIEWMAP_MIN_RATIO === 0) {
if (MAX_RATIO === 0 || MIN_RATIO === 0) {
return;
}
@@ -371,8 +386,8 @@ _ol_control_OverviewMap_.prototype.resetExtent_ = function() {
// box sizes using the min and max ratio, pick the step in the middle used
// to calculate the extent from the main map to set it to the overview map,
var steps = Math.log(
OVERVIEWMAP_MAX_RATIO / OVERVIEWMAP_MIN_RATIO) / Math.LN2;
var ratio = 1 / (Math.pow(2, steps / 2) * OVERVIEWMAP_MIN_RATIO);
MAX_RATIO / MIN_RATIO) / Math.LN2;
var ratio = 1 / (Math.pow(2, steps / 2) * MIN_RATIO);
_ol_extent_.scaleFromCenter(extent, ratio);
ovview.fit(extent);
};