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Add support for Issue 521 - use shift key to snap translations and rotations 

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@1576 eee81c28-f429-11dd-99c0-75d572ba1ddd
master
Will Schleter 2010-05-26 15:12:57 +00:00
parent 4c0148a684
commit 831faaa493
1 changed files with 29 additions and 5 deletions
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34
editor/svgcanvas.js
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@ -3290,6 +3290,12 @@ function BatchCommand(text) {
if (selectedElements[0] != null) {
var dx = x - start_x;
var dy = y - start_y;
if(evt.shiftKey) { // restrict to movement up/down/left/right (WRS)
if (Math.abs(dx)>Math.abs(dy)) dy=0;
else dx=0;
}
if (dx != 0 || dy != 0) {
var len = selectedElements.length;
for (var i = 0; i < len; ++i) {
@ -3543,6 +3549,12 @@ function BatchCommand(text) {
case "pathedit":
x *= current_zoom;
y *= current_zoom;
if(evt.shiftKey) { // restrict path segments to horizontal/vertical (WRS)
if (Math.abs(start_x-x)>Math.abs(start_y-y)) {y=start_y; mouse_y=y;}
else {x=start_x; mouse_x=x;}
}
if(rubberBox && rubberBox.getAttribute('display') != 'none') {
assignAttributes(rubberBox, {
'x': Math.min(start_x,x),
@ -3579,6 +3591,12 @@ function BatchCommand(text) {
cx = center.x;
cy = center.y;
var angle = ((Math.atan2(cy-y,cx-x) * (180/Math.PI))-90) % 360;
if(evt.shiftKey) { // restrict rotations to nice angles (WRS)
var snap = 45;
angle= Math.round(angle/snap)*snap;
}
canvas.setRotationAngle(angle<-180?(360+angle):angle, true);
call("changed", selectedElements);
break;
@ -5503,6 +5521,12 @@ function BatchCommand(text) {
}
var lastx = current_path_pts[len-2], lasty = current_path_pts[len-1];
if (evt.shiftKey) { // restrict to horizonontal/vertical (WRS)
if (Math.abs(x-lastx)>Math.abs(y-lasty)) y=lasty;
else x=lastx;
}
// we store absolute values in our path points array for easy checking above
current_path_pts.push(x);
current_path_pts.push(y);
@ -5512,14 +5536,14 @@ function BatchCommand(text) {
// set stretchy line to latest point
assignAttributes(stretchy, {
'x1': mouse_x,
'y1': mouse_y,
'x2': mouse_x,
'y2': mouse_y
'x1': x,
'y1': y,
'x2': x,
'y2': y
});
var index = (current_path_pts.length/2 - 1);
if(subpath) index += path.segs.length;
addPointGrip(index, mouse_x, mouse_y);
addPointGrip(index, x, y);
}
keep = true;
}