FusionCharts中文教程：自定义图表——画布

FusionCharts图表的画布是指在图表数据绘制的区域但不包括标题，图例和轴名称被渲染的区域。
如下图所示的蓝色区域就是图表的画布区域：

本篇教程将从四个方面教你自定义图表的画布：

1.修改画布的填充颜色

图表的画布颜色填充修饰效果如下图所示：

修改画布填充颜色用到的属性有：

属性名称	描述
canvasBgColor	设置画布的背景颜色。
canvasBgAlpha	设置画布背景的透明度。

数据结构如下：

JSON:

{
    "chart": {
        "caption": "Monthly Revenue",
        "subCaption": "Last year",
        "xAxisName": "Month",
        "yAxisName": "Amount (In USD)",
        "numberPrefix": "$",
        "placevaluesInside": "1",
        "rotatevalues": "1",
        "valueFontColor": "#ffffff",
        "canvasbgColor": "#1790e1",
        "canvasbgAlpha": "10",
        "canvasBorderThickness": "1",
        "showAlternateHGridColor": "0",
        "bgColor": "#eeeeee",
        "theme": "fint"
    },
    "data": [
        {
            "label": "Jan",
            "value": "420000"
        },
        {
            "label": "Feb",
            "value": "810000"
        },
        {
            "label": "Mar",
            "value": "720000"
        },
        {
            "label": "Apr",
            "value": "550000"
        },
        {
            "label": "May",
            "value": "910000"
        },
        {
            "label": "Jun",
            "value": "510000"
        },
        {
            "label": "Jul",
            "value": "680000"
        },
        {
            "label": "Aug",
            "value": "620000"
        },
        {
            "label": "Sep",
            "value": "610000"
        },
        {
            "label": "Oct",
            "value": "490000"
        },
        {
            "label": "Nov",
            "value": "900000"
        },
        {
            "label": "Dec",
            "value": "730000"
        }
    ]
}

XML:

<chart caption="Monthly Revenue" subcaption="Last year" xaxisname="Month" yaxisname="Amount (In USD)" numberprefix="$" placevaluesinside="1" rotatevalues="1" valuefontcolor="#ffffff" canvasbgcolor="#1790e1" canvasbgalpha="10" canvasborderthickness="1" showalternatehgridcolor="0" bgcolor="#eeeeee" theme="fint">
    < set label="Jan" value="420000" />
    < set label="Feb" value="810000" />
    < set label="Mar" value="720000" />
    < set label="Apr" value="550000" />
    < set label="May" value="910000" />
    < set label="Jun" value="510000" />
    < set label="Jul" value="680000" />
    < set label="Aug" value="620000" />
    < set label="Sep" value="610000" />
    < set label="Oct" value="490000" />
    < set label="Nov" value="900000" />
    < set label="Dec" value="730000" />
</chart>

2.自定义画布边框

默认情况下，2D图表的渲染带有画布边框。FusionChsrts允许你自定义画布边框的颜色、厚度以及透明度。带有画布边框修饰的图表如下图所示：

下表是用于自定义图表画布边框所需的属性：

属性名称	描述
showCanvasBorder	设置为1时显示画布边框；设置为0时隐藏画布边框。
canvasBorderColor	用于指定画布边框的颜色。
canvasBorderThickness	用于指定画布边框的厚度。
canvasBorderAlpha	用于指定画布边框的透明度。

数据结构如下：

JSON:

{
    "chart": {
        "caption": "Monthly Revenue",
        "subCaption": "Last year",
        "xAxisName": "Month",
        "yAxisName": "Amount (In USD)",
        "numberPrefix": "$",
        "showCanvasBorder": "1",
        "canvasBorderColor": "#666666",
        "canvasBorderThickness": "4",
        "canvasBorderAlpha": "80",
        "theme": "fint"
    },
    "data": [
        {
            "label": "Jan",
            "value": "420000"
        },
        {
            "label": "Feb",
            "value": "810000"
        },
        {
            "label": "Mar",
            "value": "720000"
        },
        {
            "label": "Apr",
            "value": "550000"
        },
        {
            "label": "May",
            "value": "910000"
        },
        {
            "label": "Jun",
            "value": "510000"
        },
        {
            "label": "Jul",
            "value": "680000"
        },
        {
            "label": "Aug",
            "value": "620000"
        },
        {
            "label": "Sep",
            "value": "610000"
        },
        {
            "label": "Oct",
            "value": "490000"
        },
        {
            "label": "Nov",
            "value": "900000"
        },
        {
            "label": "Dec",
            "value": "730000"
        }
    ]
}

XML:

<chart caption="Monthly Revenue" subcaption="Last year" xaxisname="Month" yaxisname="Amount (In USD)" numberprefix="$" showcanvasborder="1" canvasbordercolor="#666666" canvasborderthickness="4" canvasborderalpha="80" theme="fint">
    < set label="Jan" value="420000" />
    < set label="Feb" value="810000" />
    < set label="Mar" value="720000" />
    < set label="Apr" value="550000" />
    < set label="May" value="910000" />
    < set label="Jun" value="510000" />
    < set label="Jul" value="680000" />
    < set label="Aug" value="620000" />
    < set label="Sep" value="610000" />
    < set label="Oct" value="490000" />
    < set label="Nov" value="900000" />
    < set label="Dec" value="730000" />
</chart>

3.使用渐变填充画布

下图是带有渐变填充效果的图表画布：

下表是用于自定义图表画布渐变填充所需的属性：

属性名称	描述
canvasBgColor	设置画布的背景颜色。
canvasBgAlpha	设置画布背景的透明度。
canvasBgRatio	用于指定画布背景在各个渐变的比例并以逗号分隔。
canvasBgAngle	用于指定画布背景渐变的角度。

数据结构如下：

JSON:

{
    "chart": {
        "caption": "Monthly Revenue",
        "subCaption": "Last year",
        "theme": "fint",
        "xAxisName": "Month",
        "yAxisName": "Amount (In USD)",
        "numberPrefix": "$",
        "placevaluesInside": "1",
        "rotatevalues": "1",
        "bgColor": "#eeeeee,#cccccc",
        "canvasbgColor": "#eeeeee,#b3b3b3",
        "canvasbgAlpha": "100",
        "canvasBgRatio": "40,60",
        "canvasBgAngle": "0"
    },
    "data": [
        {
            "label": "Jan",
            "value": "420000"
        },
        {
            "label": "Feb",
            "value": "810000"
        },
        {
            "label": "Mar",
            "value": "720000"
        },
        {
            "label": "Apr",
            "value": "550000"
        },
        {
            "label": "May",
            "value": "910000"
        },
        {
            "label": "Jun",
            "value": "510000"
        },
        {
            "label": "Jul",
            "value": "680000"
        },
        {
            "label": "Aug",
            "value": "620000"
        },
        {
            "label": "Sep",
            "value": "610000"
        },
        {
            "label": "Oct",
            "value": "490000"
        },
        {
            "label": "Nov",
            "value": "900000"
        },
        {
            "label": "Dec",
            "value": "730000"
        }
    ]
}

XML:

<chart caption="Monthly Revenue" subcaption="Last year" theme="fint" xaxisname="Month" yaxisname="Amount (In USD)" numberprefix="$" placevaluesinside="1" rotatevalues="1" bgcolor="#eeeeee,#cccccc" canvasbgcolor="#eeeeee,#b3b3b3" canvasbgalpha="100" canvasbgratio="40,60" canvasbgangle="0">
    < set label="Jan" value="420000" />
    < set label="Feb" value="810000" />
    < set label="Mar" value="720000" />
    < set label="Apr" value="550000" />
    < set label="May" value="910000" />
    < set label="Jun" value="510000" />
    < set label="Jul" value="680000" />
    < set label="Aug" value="620000" />
    < set label="Sep" value="610000" />
    < set label="Oct" value="490000" />
    < set label="Nov" value="900000" />
    < set label="Dec" value="730000" />
</chart>

4.配置3D画布

在FusionCharts图表中的画布可以配置成3D效果，如下图所示。

自定义3D画布所需的属性如下表所示：

属性名称	描述
canvasBaseColor	用于指定画布的基座颜色。
showCanvasBg	设置为1（默认）时显示画布背景；设置为0时隐藏画布背景。
showCanvasBase	设置为1（默认）时显示画布基座；设置为0时隐藏画布基座。
canvasBaseDepth	用于设置画布基座的高度。
canvasBgDepth	用于指定画布背景的深度。

数据结构如下：

JSON:

{
    "chart": {
        "caption": "Monthly Revenue",
        "subCaption": "Last year",
        "xAxisName": "Month",
        "yAxisName": "Amount (In USD)",
        "theme": "fint",
        "numberPrefix": "$",
        "placevaluesInside": "1",
        "rotatevalues": "1",
        "showCanvasBg": "1",
        "showCanvasBase": "1",
        "canvasBaseDepth": "14",
        "canvasBgDepth": "5",
        "canvasBaseColor": "#aaaaaa",
        "canvasBgColor": "#eeeeee"
    },
    "data": [
        {
            "label": "Jan",
            "value": "420000"
        },
        {
            "label": "Feb",
            "value": "810000"
        },
        {
            "label": "Mar",
            "value": "720000"
        },
        {
            "label": "Apr",
            "value": "550000"
        },
        {
            "label": "May",
            "value": "910000"
        },
        {
            "label": "Jun",
            "value": "510000"
        },
        {
            "label": "Jul",
            "value": "680000"
        },
        {
            "label": "Aug",
            "value": "620000"
        },
        {
            "label": "Sep",
            "value": "610000"
        },
        {
            "label": "Oct",
            "value": "490000"
        },
        {
            "label": "Nov",
            "value": "900000"
        },
        {
            "label": "Dec",
            "value": "730000"
        }
    ]
}

XML:

<chart caption="Monthly Revenue" subcaption="Last year" xaxisname="Month" yaxisname="Amount (In USD)" theme="fint" numberprefix="$" placevaluesinside="1" rotatevalues="1" showcanvasbg="1" showcanvasbase="1" canvasbasedepth="14" canvasbgdepth="5" canvasbasecolor="#aaaaaa" canvasbgcolor="#eeeeee">
    < set label="Jan" value="420000" />
    < set label="Feb" value="810000" />
    < set label="Mar" value="720000" />
    < set label="Apr" value="550000" />
    < set label="May" value="910000" />
    < set label="Jun" value="510000" />
    < set label="Jul" value="680000" />
    < set label="Aug" value="620000" />
    < set label="Sep" value="610000" />
    < set label="Oct" value="490000" />
    < set label="Nov" value="900000" />
    < set label="Dec" value="730000" />
</chart>

 

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