RenderToScale
内容
[
隐藏
]NodeRendererBase.RenderToScale method
将形状渲染为Graphics 对象达到指定比例。
public SizeF RenderToScale(Graphics graphics, float x, float y, float scale)
范围 | 类型 | 描述 |
---|---|---|
graphics | Graphics | 渲染到的对象。 |
x | Single | 渲染形状左上角的 X 坐标(以世界单位表示)。 |
y | Single | 渲染形状左上角的 Y 坐标(以世界单位表示)。 |
scale | Single | 渲染形状的比例(1.0 为 100%)。 |
返回值
渲染形状的宽度和高度(以世界单位表示)。
例子
演示如何使用 Graphics 对象渲染形状并使用 Windows 窗体显示它。
public void RenderShapesOnForm()
{
Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);
ShapeForm shapeForm = new ShapeForm(new Size(1017, 840));
// 下面是使用“ShapeRenderer”类将形状渲染到 Graphics 对象的两种方法。
// 1 - 创建带有图表的形状,并将其渲染为特定比例。
Chart chart = builder.InsertChart(ChartType.Pie, 500, 400).Chart;
chart.Series.Clear();
chart.Series.Add("Desktop Browser Market Share (Oct. 2020)",
new[] { "Google Chrome", "Apple Safari", "Mozilla Firefox", "Microsoft Edge", "Other" },
new[] { 70.33, 8.87, 7.69, 5.83, 7.28 });
Shape chartShape = (Shape)doc.GetChild(NodeType.Shape, 0, true);
shapeForm.AddShapeToRenderToScale(chartShape, 0, 0, 1.5f);
// 2 - 创建一个形状组,并将其渲染为特定大小。
GroupShape group = new GroupShape(doc);
group.Bounds = new RectangleF(0, 0, 100, 100);
group.CoordSize = new Size(500, 500);
Shape subShape = new Shape(doc, ShapeType.Rectangle);
subShape.Width = 500;
subShape.Height = 500;
subShape.Left = 0;
subShape.Top = 0;
subShape.FillColor = Color.RoyalBlue;
group.AppendChild(subShape);
subShape = new Shape(doc, ShapeType.Image);
subShape.Width = 450;
subShape.Height = 450;
subShape.Left = 25;
subShape.Top = 25;
subShape.ImageData.SetImage(ImageDir + "Logo.jpg");
group.AppendChild(subShape);
builder.InsertNode(group);
GroupShape groupShape = (GroupShape)doc.GetChild(NodeType.GroupShape, 0, true);
shapeForm.AddShapeToRenderToSize(groupShape, 880, 680, 100, 100);
shapeForm.ShowDialog();
}
/// <summary>
/// 渲染并显示形状列表。
/// </summary>
private class ShapeForm : Form
{
public ShapeForm(Size size)
{
Size = size;
mShapesToRender = new List<KeyValuePair<ShapeBase, float[]>>();
}
public void AddShapeToRenderToScale(ShapeBase shape, float x, float y, float scale)
{
mShapesToRender.Add(new KeyValuePair<ShapeBase, float[]>(shape, new[] {x, y, scale}));
}
public void AddShapeToRenderToSize(ShapeBase shape, float x, float y, float width, float height)
{
mShapesToRender.Add(new KeyValuePair<ShapeBase, float[]>(shape, new[] {x, y, width, height}));
}
protected override void OnPaint(PaintEventArgs e)
{
foreach (KeyValuePair<ShapeBase, float[]> renderingArgs in mShapesToRender)
if (renderingArgs.Value.Length == 3)
RenderShapeToScale(renderingArgs.Key, renderingArgs.Value[0], renderingArgs.Value[1],
renderingArgs.Value[2]);
else if (renderingArgs.Value.Length == 4)
RenderShapeToSize(renderingArgs.Key, renderingArgs.Value[0], renderingArgs.Value[1],
renderingArgs.Value[2], renderingArgs.Value[3]);
}
private void RenderShapeToScale(ShapeBase shape, float x, float y, float scale)
{
ShapeRenderer renderer = new ShapeRenderer(shape);
using (Graphics formGraphics = CreateGraphics())
{
renderer.RenderToScale(formGraphics, x, y, scale);
}
}
private void RenderShapeToSize(ShapeBase shape, float x, float y, float width, float height)
{
ShapeRenderer renderer = new ShapeRenderer(shape);
using (Graphics formGraphics = CreateGraphics())
{
renderer.RenderToSize(formGraphics, x, y, width, height);
}
}
private readonly List<KeyValuePair<ShapeBase, float[]>> mShapesToRender;
}
也可以看看
- class NodeRendererBase
- 命名空间 Aspose.Words.Rendering
- 部件 Aspose.Words