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Added the *scaleMouse* property so that host mouse coordinates can undergo an optional scaling transformation (default is 1.0)

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Jeff 2017-07-24 18:47:10 -07:00 • committed by Jeff Parsons
commit fe74e12e40
12 changed files with 2922 additions and 2876 deletions
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24
modules/pcx86/lib/mouse.js
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@ -78,9 +78,8 @@ class Mouse extends Component {
super("Mouse", parmsMouse, Messages.MOUSE);
this.idAdapter = parmsMouse['serial'];
if (this.idAdapter) {
this.sAdapterType = "SerialPort";
}
if (this.idAdapter) this.sAdapterType = "SerialPort";
this.scale = parmsMouse['scaleMouse'];
this.setActive(false);
this.fCaptured = this.fLocked = false;
@ -108,6 +107,7 @@ class Mouse extends Component {
this.bus = bus;
this.cpu = cpu;
this.dbg = dbg;
this.scale = cmp.getMachineParm('scaleMouse') || this.scale;
/*
* Attach the Video component to the CPU, so that the CPU can periodically update
* the video display via updateVideo(), as cycles permit.
@ -503,17 +503,27 @@ class Mouse extends Component {
moveMouse(xDelta, yDelta, xDiag, yDiag)
{
if (this.isActive()) {
if (xDelta || yDelta) {
/*
* I would prefer to simply say "Math.round(xDelta * this.scale)", but JavaScript's round() function
* rounds negative numbers toward +infinity if the fraction is exactly 0.5. All positive numbers are
* rounded correctly, so we convert the value to positive and restore its sign afterward. Additionally,
* if the scaling factor turns a non-zero value into zero, we restore the value to its smallest legal
* non-zero value (thanks to Math.sign() again). This ensures that tiniest movement of the physical
* mouse always results in at least the tiniest movement of the virtual mouse.
*/
var xScaled = (Math.round(Math.abs(xDelta) * this.scale) * Math.sign(xDelta)) || Math.sign(xDelta);
var yScaled = (Math.round(Math.abs(yDelta) * this.scale) * Math.sign(yDelta)) || Math.sign(yDelta);
if (xScaled || yScaled) {
if (this.messageEnabled(Messages.MOUSE)) {
this.printMessage("moveMouse(" + xDelta + "," + yDelta + ")");
this.printMessage("moveMouse(" + xScaled + "," + yScaled + ")");
}
/*
* As sendPacket() indicates, any x and y coordinates we supply are for diagnostic purposes only.
* sendPacket() only cares about the xDelta and yDelta properties we provide above, which it then zeroes
* on completion.
*/
this.xDelta = xDelta;
this.yDelta = yDelta;
this.xDelta = xScaled;
this.yDelta = yScaled;
this.sendPacket(null, xDiag, yDiag);
}
}