C# 在PPT中绘制形状（shape）

概述

本篇文章将介绍c# 在ppt幻灯片中操作形状（shape）的方法。这里主要涉及常规形状，如箭头、矩形、圆形、三角形、多边形、不规则形状等。下面的示例中，可以通过绘制形状，并设置相应格式等。示例包含以下要点：

• 绘制形状
• 用图片填充形状
• 在形状中添加文字
• 设置形状单色、渐变色填充
• 设置形状阴影效果
• 组合多个形状为一个
• 设置形状光边效果
• 将形状保存为图片

 

工具

• spire.presentation for .net

下载安装后，注意在程序中添加引用spire.presentation.dll到程序，dll文件可在安装路径下的bin文件夹中获取。

示例代码（供参考）

【示例1】绘制形状

步骤1：新建一个幻灯片

//新建一个幻灯片文档，并指定幻灯片大小
presentation ppt = new presentation();
ppt.slidesize.type = slidesizetype.screen16x9;

步骤2：获取第一张幻灯片

islide slide = ppt.slides[0];

步骤3：添加一个云朵形状，并填充渐变色，绘入文字

//添加一个云朵形状，并填充渐变颜色
iautoshape shape1 = slide.shapes.appendshape(shapetype.calloutcloud, new rectanglef(160, 50, 200, 80));
shape1.fill.filltype = fillformattype.gradient;
shape1.fill.gradient.gradientstops.append(0, color.blue);
shape1.fill.gradient.gradientstops.append(1, color.azure);
shape1.line.filltype = fillformattype.none;

//在形状中绘制文本，并设置字体、字号、字体颜色等
shape1.appendtextframe("how??");
textrange textrange = (shape1 as iautoshape).textframe.textrange;
textrange.fontheight = 13;
textrange.latinfont = new textfont("arial");
textrange.fill.filltype = fillformattype.solid;
textrange.fill.solidcolor.color = color.white;

步骤4：添加椭圆形状，并加载图片填充

iautoshape shape2 = slide.shapes.appendshape(shapetype.ellipse, new rectanglef(50, 130, 150, 250));
string picpath = "sk.png"; 
shape2.fill.filltype = fillformattype.picture;
shape2.fill.picturefill.picture.url = picpath;
shape2.fill.picturefill.filltype = picturefilltype.stretch;
shape2.line.filltype = fillformattype.none;

步骤5：添加三角形，并设置边框效果，阴影效果

//添加一个三角形,填充颜色并设置边框样式
iautoshape shape3 = slide.shapes.appendshape(shapetype.triangle, new rectanglef(480, 180, 100, 130));
shape3.fill.filltype = fillformattype.solid;
shape3.fill.solidcolor.color = color.wheat;
shape3.line.width = 3;
shape3.line.dashstyle = linedashstyletype.dash;
shape3.shapestyle.linecolor.color = color.red;

//设置形状阴影效果
presetshadow presetshadow = new presetshadow();
presetshadow.preset = presetshadowvalue.backrightperspective;
presetshadow.colorformat.color = color.lightgray;
shape3.effectdag.presetshadoweffect = presetshadow;

步骤6：添加一个带箭头的直线

iautoshape shape4 = slide.shapes.appendshape(shapetype.line, new rectanglef(660, 200, 100, 100));
shape4.shapestyle.linecolor.color = color.red;
shape4.line.lineendtype = lineendtype.stealtharrow;
shape4.rotation = -90;//设置形状旋转角度

步骤7：绘制一个圆形、五角星，并设置光边效果，将拉个形状组合

//添加一个圆形
iautoshape shape5 = slide.shapes.appendshape(shapetype.ellipse, new rectanglef(289, 166, 120, 120));
shape5.fill.filltype = fillformattype.solid;
shape5.fill.solidcolor.color = color.white;
shape5.line.filltype = fillformattype.solid;
shape5.line.solidfillcolor.color = color.red;

//添加一个五角星形状
iautoshape shape6 = slide.shapes.appendshape(shapetype.fivepointedstar, new rectanglef(300, 170, 100, 100));
shape6.fill.filltype = fillformattype.solid;
shape6.fill.solidcolor.color = color.orange;
shape6.line.filltype = fillformattype.none;
//设置五角星形状的光边效果
gloweffect glow = new gloweffect();
glow.colorformat.color = color.yellow;
glow.radius = 7.0;
shape6.effectdag.gloweffect = glow;

//将shape5和shape6两个形状组合
arraylist list = new arraylist();
list.add(shape5);
list.add(shape6);
ppt.slides[0].groupshapes(list);

步骤8：保存文档

ppt.savetofile("result.pptx", fileformat.pptx2010);

完成代码后，调试运行程序，生成文档，如下图

全部代码：

using spire.presentation;
using spire.presentation.drawing;
using system.collections;
using system.drawing;

namespace drawshape_ppt
{
    class program
    {
        static void main(string[] args)
        {
            //新建一个幻灯片文档，并指定幻灯片大小
            presentation ppt = new presentation();
            ppt.slidesize.type = slidesizetype.screen16x9;

            //获取第一张幻灯片
            islide slide = ppt.slides[0];

            //添加一个云朵形状，并填充渐变颜色
            iautoshape shape1 = slide.shapes.appendshape(shapetype.calloutcloud, new rectanglef(160, 50, 200, 80));
            shape1.fill.filltype = fillformattype.gradient;
            shape1.fill.gradient.gradientstops.append(0, color.blue);
            shape1.fill.gradient.gradientstops.append(1, color.azure);
            shape1.line.filltype = fillformattype.none;

            //在形状中绘制文本，并设置字体、字号、字体颜色等
            shape1.appendtextframe("how??");
            textrange textrange = (shape1 as iautoshape).textframe.textrange;
            textrange.fontheight = 13;
            textrange.latinfont = new textfont("arial");
            textrange.fill.filltype = fillformattype.solid;
            textrange.fill.solidcolor.color = color.white;

            //添加一个椭圆，并用图片填充形状
            iautoshape shape2 = slide.shapes.appendshape(shapetype.ellipse, new rectanglef(50, 130, 150, 250));
            string picpath = "sk.png"; 
            shape2.fill.filltype = fillformattype.picture;
            shape2.fill.picturefill.picture.url = picpath;
            shape2.fill.picturefill.filltype = picturefilltype.stretch;
            shape2.line.filltype = fillformattype.none;

            //添加一个三角形,填充颜色并设置形状边框样式
            iautoshape shape3 = slide.shapes.appendshape(shapetype.triangle, new rectanglef(480, 180, 100, 130));
            shape3.fill.filltype = fillformattype.solid;
            shape3.fill.solidcolor.color = color.wheat;
            shape3.line.width = 3;
            shape3.line.dashstyle = linedashstyletype.dash;
            shape3.shapestyle.linecolor.color = color.red;

            //设置形状阴影效果
            presetshadow presetshadow = new presetshadow();
            presetshadow.preset = presetshadowvalue.backrightperspective;
            presetshadow.colorformat.color = color.lightgray;
            shape3.effectdag.presetshadoweffect = presetshadow;
         
            //添加一个带箭头的直线
            iautoshape shape4 = slide.shapes.appendshape(shapetype.line, new rectanglef(660, 200, 100, 100));
            shape4.shapestyle.linecolor.color = color.red;
            shape4.line.lineendtype = lineendtype.stealtharrow;
            shape4.rotation = -90;//设置形状旋转角度

            //添加一个圆形
            iautoshape shape5 = slide.shapes.appendshape(shapetype.ellipse, new rectanglef(289, 166, 120, 120));
            shape5.fill.filltype = fillformattype.solid;
            shape5.fill.solidcolor.color = color.white;
            shape5.line.filltype = fillformattype.solid;
            shape5.line.solidfillcolor.color = color.red;

            //添加一个五角星形状
            iautoshape shape6 = slide.shapes.appendshape(shapetype.fivepointedstar, new rectanglef(300, 170, 100, 100));
            shape6.fill.filltype = fillformattype.solid;
            shape6.fill.solidcolor.color = color.orange;
            shape6.line.filltype = fillformattype.none;
            //设置五角星形状的光边效果
            gloweffect glow = new gloweffect();
            glow.colorformat.color = color.yellow;
            glow.radius = 7.0;
            shape6.effectdag.gloweffect = glow;
            
            //将shape5和shape6两个形状组合
            arraylist list = new arraylist();
            list.add(shape5);
            list.add(shape6);
            ppt.slides[0].groupshapes(list);

            //保存文档
            ppt.savetofile("result.pptx", fileformat.pptx2010);
            system.diagnostics.process.start("result.pptx");
        }
    }
}

view code

 

【示例2】将形状保存为图片

步骤1：加载测试文档

presentation ppt = new presentation();
ppt.loadfromfile("test.pptx");

步骤2：将形状保存为图片

//遍历第一张幻灯片中的所有图形
 for (int i = 0; i < ppt.slides[0].shapes.count; i++)
 {
     //获取幻灯片中的图形，并保存为.png格式的图片
     image image = ppt.slides[0].shapes.saveasimage(i);
     image.save(string.format("picture-{0}.png", i), system.drawing.imaging.imageformat.png);
 }

全部代码：

using spire.presentation;
using system;
using system.drawing;

namespace saveshapesasimgs_ppt
{
    class program
    {
        static void main(string[] args)
        {
            //实例化presentation类的对象，并加载测试文档
            presentation ppt = new presentation();
            ppt.loadfromfile("test.pptx");

            //遍历第一张幻灯片中的所有图形
            for (int i = 0; i < ppt.slides[0].shapes.count; i++)
            {
                //获取幻灯片中的图形，并保存为.png格式的图片
                image image = ppt.slides[0].shapes.saveasimage(i);
                image.save(string.format("picture-{0}.png", i), system.drawing.imaging.imageformat.png);
            }

        }
    }
}

view code

 

（本文完）

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