EmfRecorderGraphics2D

Inheritance: java.lang.Object, com.aspose.imaging.fileformats.emf.graphics.MetafileRecorderGraphics2D

public final class EmfRecorderGraphics2D extends MetafileRecorderGraphics2D

Emf 记录器图形

构造函数

构造函数描述
EmfRecorderGraphics2D(Rectangle frame, Size deviceSize, Size deviceSizeMm)初始化 EmfRecorderGraphics2D 类的新实例。

方法

方法描述
getBackgroundMode()获取或设置背景模式。
setBackgroundMode(int value)获取或设置背景模式。
endRecording()结束录制。
fromEmfImage(EmfImage emfImage)获取一个 EmfRecorderGraphics2D 实例，其中包含来自 Emf 图像的所有记录。

Example: This example shows how to create a EMF image and draw some geometric shapes on it using EmfRecorderGraphics2D.

String dir = "c:\\temp\\";

// 图像的像素尺寸
int deviceWidth = 600;
int deviceHeight = 400;

// 图像的毫米尺寸
int deviceWidthMm = (int) (deviceWidth / 100f);
int deviceHeightMm = (int) (deviceHeight / 100f);

com.aspose.imaging.Rectangle frame = new com.aspose.imaging.Rectangle(0, 0, deviceWidth, deviceHeight);

// 创建 EMF 图像。
com.aspose.imaging.fileformats.emf.graphics.EmfRecorderGraphics2D graphics =
        new com.aspose.imaging.fileformats.emf.graphics.EmfRecorderGraphics2D(
                frame,
                new com.aspose.imaging.Size(deviceWidth, deviceHeight),
                new com.aspose.imaging.Size(deviceWidthMm, deviceHeightMm));

// 使用 1 像素宽的黑色笔在图像边框上绘制一个黑色矩形。
graphics.drawRectangle(new com.aspose.imaging.Pen(com.aspose.imaging.Color.getBlack(), 1), 0, 0, deviceWidth, deviceHeight);

// 使用白烟色填充矩形。
graphics.fillRectangle(
        new com.aspose.imaging.brushes.SolidBrush(com.aspose.imaging.Color.getWhiteSmoke()),
        new com.aspose.imaging.Rectangle(10, 10, 580, 380));

// 使用 1 像素宽的深绿色笔绘制两条对角线。
graphics.drawLine(new com.aspose.imaging.Pen(com.aspose.imaging.Color.getDarkGreen(), 1), 0, 0, deviceWidth, deviceHeight);
graphics.drawLine(new com.aspose.imaging.Pen(com.aspose.imaging.Color.getDarkGreen(), 1), 0, deviceHeight, deviceWidth, 0);

// 使用 2 像素宽的蓝色笔在矩形 {0, 0, 200, 200} 内绘制弧线。
graphics.drawArc(new com.aspose.imaging.Pen(com.aspose.imaging.Color.getBlue(), 2), new com.aspose.imaging.Rectangle(0, 0, 200, 200), 90, 270);

// 填充弧线
graphics.fillPie(
        new com.aspose.imaging.brushes.SolidBrush(com.aspose.imaging.Color.getLightSkyBlue()),
        new com.aspose.imaging.Rectangle(0, 0, 150, 150), 90, 270);

// 使用 2 像素宽的红色笔绘制三次贝塞尔曲线。
graphics.drawCubicBezier(new com.aspose.imaging.Pen(com.aspose.imaging.Color.getRed(), 2),
        new com.aspose.imaging.Point(0, 0),
        new com.aspose.imaging.Point(200, 133),
        new com.aspose.imaging.Point(400, 166),
        new com.aspose.imaging.Point(600, 400));

// 在指定位置绘制指定尺寸的光栅图像。
// 图像已缩放以适应所需的矩形。
com.aspose.imaging.RasterImage imageToDraw = (com.aspose.imaging.RasterImage) com.aspose.imaging.Image.load(dir + "sample.bmp");
try {
    graphics.drawImage(imageToDraw,
            new com.aspose.imaging.Rectangle(400, 200, 100, 50),
            new com.aspose.imaging.Rectangle(0, 0, deviceWidth, deviceHeight),
            com.aspose.imaging.GraphicsUnit.Pixel);
} finally {
    imageToDraw.dispose();
}

// 绘制文本字符串
graphics.drawString("Hello World!",
        new com.aspose.imaging.Font("Arial", 48, com.aspose.imaging.FontStyle.Regular),
        com.aspose.imaging.Color.getDarkRed(), 200, 300);

// 创建用于填充的路径
com.aspose.imaging.Figure figureToFill = new com.aspose.imaging.Figure();
figureToFill.setClosed(true);

com.aspose.imaging.GraphicsPath pathToFill = new com.aspose.imaging.GraphicsPath();
pathToFill.addFigure(figureToFill);

figureToFill.addShapes(new com.aspose.imaging.Shape[]
        {
                new com.aspose.imaging.shapes.ArcShape(new com.aspose.imaging.RectangleF(400, 0, 200, 100), 45, 300),
                new com.aspose.imaging.shapes.BezierShape(
                        new com.aspose.imaging.PointF[]
                                {
                                        new com.aspose.imaging.PointF(300, 200),
                                        new com.aspose.imaging.PointF(400, 200),
                                        new com.aspose.imaging.PointF(500, 100),
                                        new com.aspose.imaging.PointF(600, 200),
                                }),
                new com.aspose.imaging.shapes.PolygonShape(
                        new com.aspose.imaging.PointF[]
                                {
                                        new com.aspose.imaging.PointF(300, 100),
                                }),
                new com.aspose.imaging.shapes.RectangleShape(new com.aspose.imaging.RectangleF(0, 100, 200, 200)),
        });

// 使用黄色画刷填充路径，并使用绿色笔绘制轮廓
graphics.fillPath(
        new com.aspose.imaging.Pen(com.aspose.imaging.Color.getGreen(), 2),
        new com.aspose.imaging.brushes.SolidBrush(com.aspose.imaging.Color.getYellow()), pathToFill);

// 创建用于绘制的路径
com.aspose.imaging.GraphicsPath pathToDraw = new com.aspose.imaging.GraphicsPath();
com.aspose.imaging.Figure figureToDraw = new com.aspose.imaging.Figure();
pathToDraw.addFigure(figureToDraw);

figureToDraw.addShapes(new com.aspose.imaging.Shape[]
        {
                new com.aspose.imaging.shapes.ArcShape(new com.aspose.imaging.RectangleF(200, 200, 200, 200), 0, 360),
        });

// 使用 5 像素宽的橙色笔绘制路径。
graphics.drawPath(new com.aspose.imaging.Pen(com.aspose.imaging.Color.getOrange(), 5), pathToDraw);

// 为了栅格化 SVG，我们需要指定栅格化选项。
com.aspose.imaging.imageoptions.SvgRasterizationOptions rasterizationOptions = new com.aspose.imaging.imageoptions.SvgRasterizationOptions();
com.aspose.imaging.imageoptions.PngOptions saveOptions = new com.aspose.imaging.imageoptions.PngOptions();
saveOptions.setVectorRasterizationOptions(rasterizationOptions);

// 获取包含所有绘图命令的最终 WMF 图像
com.aspose.imaging.fileformats.emf.EmfImage emfImage = graphics.endRecording();
try {
    emfImage.save(dir + "test.output.emf");
} finally {
    emfImage.dispose();
}

EmfRecorderGraphics2D(Rectangle frame, Size deviceSize, Size deviceSizeMm)

public EmfRecorderGraphics2D(Rectangle frame, Size deviceSize, Size deviceSizeMm)

初始化 EmfRecorderGraphics2D 类的新实例。

Parameters:

参数类型描述
frameRectangle框架。
deviceSizeSize设备的尺寸。
deviceSizeMmSize设备尺寸（毫米）。

getBackgroundMode()

public int getBackgroundMode()

获取或设置背景模式。

Returns: int - 背景模式。

setBackgroundMode(int value)

public void setBackgroundMode(int value)

获取或设置背景模式。

Parameters:

参数类型描述
valueint背景模式。

endRecording()

public EmfImage endRecording()

结束录制。

Returns: EmfImage - The result image.

fromEmfImage(EmfImage emfImage)

public static EmfRecorderGraphics2D fromEmfImage(EmfImage emfImage)

获取一个 EmfRecorderGraphics2D 实例，其中包含来自 Emf 图像的所有记录。

Parameters:

参数类型描述
emfImageEmfImage用于读取记录的 Emf 图像。

Returns: EmfRecorderGraphics2D - An instance of the EmfRecorderGraphics2D

Example: This example shows how to load a EMF image from a file and draw a text string over it.

String dir = "c:\\temp\\";

com.aspose.imaging.fileformats.emf.EmfImage emfImage = (com.aspose.imaging.fileformats.emf.EmfImage) com.aspose.imaging.Image.load(dir + "test.emf");
try {
    com.aspose.imaging.fileformats.emf.graphics.EmfRecorderGraphics2D graphics =
            com.aspose.imaging.fileformats.emf.graphics.EmfRecorderGraphics2D.fromEmfImage(emfImage);

    // 首先，获取图像尺寸
    int width = emfImage.getWidth();
    int height = emfImage.getHeight();

    // 其次，计算一个变换，以将文本字符串沿图像的主对角线放置 -
    // 从左上角到右下角。
    float emFontSize = 96f;
    float d = (float) java.lang.Math.sqrt(width * width + height * height);
    float scaleFactor = d / (emFontSize * 5f);

    float tan = ((float) height) / width;
    double radians = java.lang.Math.atan(tan);
    double degrees = (180 * radians) / java.lang.Math.PI;

    com.aspose.imaging.Matrix transform = new com.aspose.imaging.Matrix();
    transform.rotate((float) degrees);
    transform.scale(scaleFactor, scaleFactor);

    // 然后，设置变换。
    graphics.setTransform(transform);

    // 最后，将水印（粉色文本字符串）沿主对角线放置。
    graphics.drawString("WATERMARK", new com.aspose.imaging.Font(
                    "Courier New", emFontSize),
            com.aspose.imaging.Color.getLightPink(), 0, 0/*, (float)degrees*/);

    // 将带有水印的图像保存为另一个 EMF 文件。
    com.aspose.imaging.fileformats.emf.EmfImage scaledEmfImage = graphics.endRecording();
    try {
        scaledEmfImage.save(dir + "test.scaled.emf");
    } finally {
        scaledEmfImage.dispose();
    }
} finally {
    emfImage.dispose();
}
MetafileRecorderGraphics2D