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Rect and clip instructions.

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This commit is contained in:
Michael Jumper
2011-07-21 15:16:19 -07:00
parent b5a81afe87
commit d0155cdf52
2 changed files with 86 additions and 1 deletions
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34
guacamole-common-js/src/main/resources/guacamole.js
View File

@@ -302,6 +302,40 @@ Guacamole.Client = function(display, tunnel) {
},
"rect": function(parameters) {
var channelMask = parseInt(parameters[0]);
var layer = getLayer(parseInt(parameters[1]));
var x = parseInt(parameters[2]);
var y = parseInt(parameters[3]);
var w = parseInt(parameters[4]);
var h = parseInt(parameters[5]);
var r = parseInt(parameters[6]);
var g = parseInt(parameters[7]);
var b = parseInt(parameters[8]);
var a = parseInt(parameters[9]);
layer.setChannelMask(channelMask);
layer.drawRect(
x, y, w, h,
r, g, b, a
);
},
"clip": function(parameters) {
var layer = getLayer(parseInt(parameters[0]));
var x = parseInt(parameters[1]);
var y = parseInt(parameters[2]);
var w = parseInt(parameters[3]);
var h = parseInt(parameters[4]);
layer.clipRect(x, y, w, h);
},
"cursor": function(parameters) {
var x = parseInt(parameters[0]);

53
guacamole-common-js/src/main/resources/layer.js
View File

@@ -54,6 +54,7 @@ Guacamole.Layer = function(width, height) {
* @private
*/
var displayContext = display.getContext("2d");
displayContext.save();
/**
* The queue of all pending Tasks. Tasks will be run in order, with new
@@ -204,8 +205,8 @@ Guacamole.Layer = function(width, height) {
// Draw all pending tasks.
var task;
while ((task = tasks[0]) != null && task.handler) {
task.handler();
tasks.shift();
task.handler();
}
}
@@ -386,6 +387,56 @@ Guacamole.Layer = function(width, height) {
});
};
/**
* Fill the specified rectangle of image data with the specified color.
*
* @param {Number} x The X coordinate of the upper-left corner of the
* rectangle to draw.
* @param {Number} y The Y coordinate of the upper-left corner of the
* rectangle to draw.
* @param {Number} w The width of the rectangle to draw.
* @param {Number} h The height of the rectangle to draw.
* @param {Number} r The red component of the color of the rectangle.
* @param {Number} g The green component of the color of the rectangle.
* @param {Number} b The blue component of the color of the rectangle.
* @param {Number} a The alpha component of the color of the rectangle.
*/
this.drawRect = function(x, y, w, h, r, g, b, a) {
scheduleTask(function() {
if (layer.autosize != 0) fitRect(x, y, w, h);
displayContext.fillStyle = "rgba("
+ r + "," + g + "," + b + "," + a + ")";
displayContext.fillRect(x, y, w, h);
});
};
/**
* Clip all future drawing operations by the specified rectangle.
*
* @param {Number} x The X coordinate of the upper-left corner of the
* rectangle to use for the clipping region.
* @param {Number} y The Y coordinate of the upper-left corner of the
* rectangle to use for the clipping region.
* @param {Number} w The width of the rectangle to use for the clipping region.
* @param {Number} h The height of the rectangle to use for the clipping region.
*/
this.clipRect = function(x, y, w, h) {
scheduleTask(function() {
// Clear any current clipping region
displayContext.restore();
displayContext.save();
if (layer.autosize != 0) fitRect(x, y, w, h);
// Set new clipping region
displayContext.beginPath();
displayContext.rect(x, y, w, h);
displayContext.clip();
});
};
/**
* Provides the given filtering function with a writable snapshot of
* image data and the current width and height of the Layer.