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[broadway] Break out all command handling to separate functions

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We don't want to mix up the argument parsing with the actual implementation.
This commit is contained in:
Alexander Larsson 2011-04-06 09:57:31 +02:00
parent 7c20d59411
commit f53771cc1d
1 changed files with 107 additions and 67 deletions
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174
gdk/broadway/broadway.js
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@ -92,30 +92,6 @@ var surfaces = {};
var outstandingCommands = new Array();
var inputSocket = null;
function createSurface(id, x, y, width, height, isTemp)
{
var surface = { id: id, x: x, y:y, width: width, height: height, isTemp: isTemp };
surface.drawQueue = [];
surface.transientParent = 0;
var canvas = document.createElement("canvas");
canvas.width = width;
canvas.height = height;
canvas.surface = surface;
canvas.style["position"] = "absolute";
canvas.style["left"] = x + "px";
canvas.style["top"] = y + "px";
canvas.style["display"] = "none";
document.body.appendChild(canvas);
surface.canvas = canvas;
var context = canvas.getContext("2d");
context.globalCompositeOperation = "source-over";
surface.context = context;
surfaces[id] = surface;
}
var GDK_CROSSING_NORMAL = 0;
var GDK_CROSSING_GRAB = 1;
var GDK_CROSSING_UNGRAB = 2;
@ -208,6 +184,102 @@ function flushSurface(surface)
}
}
function cmdCreateSurface(id, x, y, width, height, isTemp)
{
var surface = { id: id, x: x, y:y, width: width, height: height, isTemp: isTemp };
surface.drawQueue = [];
surface.transientParent = 0;
var canvas = document.createElement("canvas");
canvas.width = width;
canvas.height = height;
canvas.surface = surface;
canvas.style["position"] = "absolute";
canvas.style["left"] = x + "px";
canvas.style["top"] = y + "px";
canvas.style["display"] = "none";
document.body.appendChild(canvas);
surface.canvas = canvas;
var context = canvas.getContext("2d");
context.globalCompositeOperation = "source-over";
surface.context = context;
surfaces[id] = surface;
}
function cmdShowSurface(id)
{
surfaces[id].canvas.style["display"] = "inline";
}
function cmdHideSurface(id)
{
surfaces[id].canvas.style["display"] = "none";
}
function cmdSetTransientFor(id, parentId)
{
surfaces[id].transientParent = parentId;
}
function cmdDeleteSurface(id)
{
var canvas = surfaces[id].canvas;
delete surfaces[id];
canvas.parentNode.removeChild(canvas);
}
function cmdMoveSurface(id, x, y)
{
surfaces[id].canvas.style["left"] = x + "px";
surfaces[id].canvas.style["top"] = y + "px";
}
function cmdResizeSurface(id, w, h)
{
var surface = surfaces[id];
/* Flush any outstanding draw ops before changing size */
flushSurface(surface);
/* Canvas resize clears the data, so we need to save it first */
var tmpCanvas = document.createElement("canvas");
tmpCanvas.width = surface.canvas.width;
tmpCanvas.height = surface.canvas.height;
var tmpContext = tmpCanvas.getContext("2d");
tmpContext.globalCompositeOperation = "copy";
tmpContext.drawImage(surface.canvas, 0, 0, tmpCanvas.width, tmpCanvas.height);
surface.canvas.width = w;
surface.canvas.height = h;
surface.context.globalCompositeOperation = "copy";
surface.context.drawImage(tmpCanvas, 0, 0, tmpCanvas.width, tmpCanvas.height);
}
function cmdFlushSurface(id)
{
flushSurface(surfaces[id]);
}
function cmdGrabPointer(id, ownerEvents)
{
doGrab(id, ownerEvents, time, false);
sendInput ("g", []);
}
function cmdUngrabPointer()
{
sendInput ("u", []);
if (grab.window != null) {
if (grab.time == 0 || time == 0 ||
grab.time < time)
grab.window = null;
}
}
function handleCommands(cmdObj)
{
var cmd = cmdObj.data;
@ -231,19 +303,19 @@ function handleCommands(cmdObj)
i = i + 3;
var isTemp = cmd[i] == '1';
i = i + 1;
createSurface(id, x, y, w, h, isTemp);
cmdCreateSurface(id, x, y, w, h, isTemp);
break;
case 'S': // Show a surface
var id = base64_16(cmd, i);
i = i + 3;
surfaces[id].canvas.style["display"] = "inline";
cmdShowSurface(id);
break;
case 'H': // Hide a surface
var id = base64_16(cmd, i);
i = i + 3;
surfaces[id].canvas.style["display"] = "none";
cmdHideSurface(id);
break;
case 'p': // Set transient parent
@ -251,15 +323,13 @@ function handleCommands(cmdObj)
i = i + 3;
var parentId = base64_16(cmd, i);
i = i + 3;
surfaces[id].transientParent = parentId;
cmdSetTransientFor(id, parentId);
break;
case 'd': // Delete surface
var id = base64_16(cmd, i);
i = i + 3;
var canvas = surfaces[id].canvas;
delete surfaces[id];
canvas.parentNode.removeChild(canvas);
cmdDeleteSurface(id);
break;
case 'm': // Move a surface
@ -269,8 +339,7 @@ function handleCommands(cmdObj)
i = i + 3;
var y = base64_16(cmd, i);
i = i + 3;
surfaces[id].canvas.style["left"] = x + "px";
surfaces[id].canvas.style["top"] = y + "px";
cmdMoveSurface(id, x, y);
break;
case 'r': // Resize a surface
@ -280,25 +349,7 @@ function handleCommands(cmdObj)
i = i + 3;
var h = base64_16(cmd, i);
i = i + 3;
var surface = surfaces[id];
/* Flush any outstanding draw ops before changing size */
flushSurface(surface);
/* Canvas resize clears the data, so we need to save it first */
var tmpCanvas = document.createElement("canvas");
tmpCanvas.width = surface.canvas.width;
tmpCanvas.height = surface.canvas.height;
var tmpContext = tmpCanvas.getContext("2d");
tmpContext.globalCompositeOperation = "copy";
tmpContext.drawImage(surface.canvas, 0, 0, tmpCanvas.width, tmpCanvas.height);
surface.canvas.width = w;
surface.canvas.height = h;
surface.context.globalCompositeOperation = "copy";
surface.context.drawImage(tmpCanvas, 0, 0, tmpCanvas.width, tmpCanvas.height);
cmdResizeSurface(id, w, h);
break;
case 'i': // Put image data surface
@ -358,7 +409,7 @@ function handleCommands(cmdObj)
var id = base64_16(cmd, i);
i = i + 3;
flushSurface(surfaces[id]);
cmdFlushSurface(id);
break;
case 'g': // Grab
@ -366,22 +417,11 @@ function handleCommands(cmdObj)
i = i + 3;
var ownerEvents = cmd[i++] == '1';
doGrab(id, ownerEvents, time, false);
sendInput ("g", []);
cmdGrabPointer(id, ownerEvents);
break;
case 'u': // Ungrab
var time = base64_32(cmd, i);
i = i + 6;
sendInput ("u", []);
if (grab.window != null) {
if (grab.time == 0 || time == 0 ||
grab.time < time)
grab.window = null;
}
cmdUngrabPointer();
break;
default:
alert("Unknown op " + command);