From df314b26346400cc03c780e7398a7352effac6ba Mon Sep 17 00:00:00 2001
From: Neil Gershenfeld <gersh@cba.mit.edu>
Date: Mon, 7 May 2018 22:23:27 -0400
Subject: [PATCH] wip
---
js/mods.js | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/js/mods.js b/js/mods.js
index a632414..ee4d943 100644
--- a/js/mods.js
+++ b/js/mods.js
@@ -115,16 +115,22 @@ document.addEventListener('mouseup',function(evt) {
svg.removeChild(rect)
})
document.addEventListener('mousemove',function(evt) {
- evt.preventDefault()
- evt.stopPropagation()
if (mods.ui.mousedown) {
+ evt.preventDefault()
+ evt.stopPropagation()
var t = mods_transform()
+ //
+ // remember start
+ //
if (mods.ui.xpan == undefined) {
mods.ui.xpan = evt.pageX
mods.ui.ypan = evt.pageY
mods.ui.xtrans = t.tx
mods.ui.ytrans = t.ty
}
+ //
+ // select region
+ //
if (evt.shiftKey) {
var rect = document.getElementById('svgrect')
var xp = t.ox-t.tx+(mods.ui.xpan-t.ox)/t.s
@@ -144,6 +150,9 @@ document.addEventListener('mousemove',function(evt) {
else
rect.setAttribute('height',yw-yp)
}
+ //
+ // pan
+ //
else {
xtrans = mods.ui.xtrans+(evt.pageX-mods.ui.xpan)/t.s
ytrans = mods.ui.ytrans+(evt.pageY-mods.ui.ypan)/t.s
--
GitLab