mirror of
https://github.com/Merricx/qrazybox.git
synced 2024-11-24 19:52:58 +01:00
111 lines
No EOL
2.6 KiB
JavaScript
111 lines
No EOL
2.6 KiB
JavaScript
/*
|
|
Ported to JavaScript by Lazar Laszlo 2011
|
|
|
|
lazarsoft@gmail.com, www.lazarsoft.info
|
|
|
|
*/
|
|
|
|
/*
|
|
*
|
|
* Copyright 2007 ZXing authors
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
|
|
function BitMatrix( width, height)
|
|
{
|
|
if(!height)
|
|
height=width;
|
|
if (width < 1 || height < 1)
|
|
{
|
|
throw "Both dimensions must be greater than 0";
|
|
}
|
|
this.width = width;
|
|
this.height = height;
|
|
var rowSize = width >> 5;
|
|
if ((width & 0x1f) != 0)
|
|
{
|
|
rowSize++;
|
|
}
|
|
this.rowSize = rowSize;
|
|
this.bits = new Array(rowSize * height);
|
|
for(var i=0;i<this.bits.length;i++)
|
|
this.bits[i]=0;
|
|
|
|
this.__defineGetter__("Width", function()
|
|
{
|
|
return this.width;
|
|
});
|
|
this.__defineGetter__("Height", function()
|
|
{
|
|
return this.height;
|
|
});
|
|
this.__defineGetter__("Dimension", function()
|
|
{
|
|
if (this.width != this.height)
|
|
{
|
|
throw "Can't call getDimension() on a non-square matrix";
|
|
}
|
|
return this.width;
|
|
});
|
|
|
|
this.get_Renamed=function( x, y)
|
|
{
|
|
var offset = y * this.rowSize + (x >> 5);
|
|
return ((URShift(this.bits[offset], (x & 0x1f))) & 1) != 0;
|
|
}
|
|
this.set_Renamed=function( x, y)
|
|
{
|
|
var offset = y * this.rowSize + (x >> 5);
|
|
this.bits[offset] |= 1 << (x & 0x1f);
|
|
}
|
|
this.flip=function( x, y)
|
|
{
|
|
var offset = y * this.rowSize + (x >> 5);
|
|
this.bits[offset] ^= 1 << (x & 0x1f);
|
|
}
|
|
this.clear=function()
|
|
{
|
|
var max = this.bits.length;
|
|
for (var i = 0; i < max; i++)
|
|
{
|
|
this.bits[i] = 0;
|
|
}
|
|
}
|
|
this.setRegion=function( left, top, width, height)
|
|
{
|
|
if (top < 0 || left < 0)
|
|
{
|
|
throw "Left and top must be nonnegative";
|
|
}
|
|
if (height < 1 || width < 1)
|
|
{
|
|
throw "Height and width must be at least 1";
|
|
}
|
|
var right = left + width;
|
|
var bottom = top + height;
|
|
if (bottom > this.height || right > this.width)
|
|
{
|
|
throw "The region must fit inside the matrix";
|
|
}
|
|
for (var y = top; y < bottom; y++)
|
|
{
|
|
var offset = y * this.rowSize;
|
|
for (var x = left; x < right; x++)
|
|
{
|
|
this.bits[offset + (x >> 5)] |= 1 << (x & 0x1f);
|
|
}
|
|
}
|
|
}
|
|
} |