# 現代 API

> 現代 API

Source: https://docs.aspose.com/slides/zh-hant/python-java/modern-api/


## 介紹

歷史上，Aspose Slides 依賴於 `java.awt`，並在公開 API 中包含以下來自該套件的類別：
- [Graphics2D](https://docs.oracle.com/javase/8/docs/api/java/awt/Graphics2D.html)
- [BufferedImage](https://docs.oracle.com/javase/8/docs/api/java/awt/image/BufferedImage.html)

自 24.4 版起，此公開 API 已標記為過時。

為了移除對這些類別的相依，我們加入了所謂的「現代 API」——即應取代過時 API 使用的 API，其簽名不再依賴 `BufferedImage`。`Graphics2D` 已標記為過時，並已從公開 Slides API 中移除。

含有 `System.Drawing` 相依的過時公開 API 將於 24.8 版中移除。

## 現代 API

在公開 API 中加入了以下類別與列舉：

- IImage – 代表點陣或向量圖像。
- ImageFormat – 代表圖像的檔案格式。
- Images – 用於實例化及操作 IImage 介面的函式。

請注意，IImage 為可釋放資源的物件（實作 `IDisposable` 介面），應使用 `using` 包裹或以其他適當方式釋放。

使用新 API 的典型情境如下：

``` python
from asposeslides.api import Presentation, SaveFormat, Images, ShapeType, ImageFormat
from javax.imageio import ImageIO
from java.io import File
from java.awt import Dimension

pres = Presentation();

# 從磁碟上的檔案實例化一個可釋放的 IImage 實例。
image = Images.fromFile("image.png");

# 透過將 IImage 實例加入簡報的 images 來建立 PowerPoint 圖像。
ppImage = pres.getImages().addImage(image);
image.dispose();

# 在第 1 張投影片上加入圖片形狀。
pres.getSlides().get_Item(0).getShapes().addPictureFrame(ShapeType.Rectangle, 10, 10, 100, 100, ppImage);

# 取得代表第 1 張投影片的 IImage 實例。
slideImage = pres.getSlides().get_Item(0).getImage(Dimension(1920, 1080));

# 將圖像存檔至磁碟。
slideImage.save("slide1.jpeg", ImageFormat.Jpeg);
slideImage.dispose();

pres.dispose();
```

## 用 現代 API 取代舊代碼

一般而言，您需要將使用 ImageIO 的舊方法呼叫替換為新的方法。

舊：
``` python
image_format = "PNG"
buffImage = pres.getSlides().get_Item(0).getThumbnail(Dimension(1920, 1080))
ImageIO.write(buffImage, image_format, File("image.png"))
```
新：
``` python
slideImage = pres.getSlides().get_Item(0).getImage(Dimension(1920, 1080));
slideImage.save("image.png", ImageFormat.Png);
```

### 取得投影片縮圖

使用過時 API 的程式碼：

``` python
from asposeslides.api import Presentation
from javax.imageio import ImageIO
from java.io import File
from java.awt import Dimension


pres = Presentation("pres.pptx");

slideImage = pres.getSlides().get_Item(0).getThumbnail();
image_format = "PNG"
ImageIO.write(slideImage, image_format, File("slide1.png"))

pres.dispose();
```

現代 API：

``` python
from asposeslides.api import Presentation, ImageFormat


pres = Presentation("pres.pptx");

slideImage = pres.getSlides().get_Item(0).getImage();
slideImage.save("slide1.png", ImageFormat.Png);
slideImage.dispose();

pres.dispose();
```

### 取得圖形縮圖

使用過時 API 的程式碼：

``` python
from asposeslides.api import Presentation
from javax.imageio import ImageIO
from java.io import File
from java.awt import Dimension


pres = Presentation("pres.pptx");

shapeImage = pres.getSlides().get_Item(0).getShapes().get_Item(0).getThumbnail();
image_format = "PNG"
ImageIO.write(shapeImage, image_format, File("shape.png"))

pres.dispose();
```

現代 API：

``` python
from asposeslides.api import Presentation, ImageFormat


pres = Presentation("pres.pptx");

shapeImage = pres.getSlides().get_Item(0).getShapes().get_Item(0).getImage();
shapeImage.save("shape.png", ImageFormat.Png);
shapeImage.dispose();

pres.dispose();
```

### 取得簡報縮圖

使用過時 API 的程式碼：

``` python
from asposeslides.api import Presentation, RenderingOptions
from javax.imageio import ImageIO
from java.io import File
from java.awt import Dimension


pres = Presentation("pres.pptx");

image_format = "PNG"
rendering_options = RenderingOptions();
bitmaps = pres.getThumbnails(rendering_options, Dimension(1980, 1028));

for index in range(bitmaps.length):
    thumbnail = bitmaps[index];
    ImageIO.write(thumbnail, "PNG", File("slide" + str(index) + ".png"));
    
pres.dispose();
```

現代 API：

``` python
from asposeslides.api import Presentation, RenderingOptions, ImageFormat
from java.awt import Dimension


pres = Presentation("pres.pptx");

rendering_options = RenderingOptions();
images = pres.getImages(rendering_options, Dimension(1980, 1028));

for index in range(images.length):
    thumbnail = images[index];
    thumbnail.save("slide" + str(index) + ".png", ImageFormat.Png);
    thumbnail.dispose();

pres.dispose();
```

### 新增圖片至簡報

使用過時 API 的程式碼：

``` python
from asposeslides.api import Presentation, ShapeType
from javax.imageio import ImageIO
from java.io import File


pres = Presentation();

bufferedImages = ImageIO.read(File("image.png"));
ppImage = pres.getImages().addImage(bufferedImages);

pres.getSlides().get_Item(0).getShapes().addPictureFrame(ShapeType.Rectangle, 10, 10, 100, 100, ppImage);

pres.dispose();
```

現代 API：

``` python
from asposeslides.api import Presentation, ShapeType, Images
from java.awt import Dimension


pres = Presentation();

image = Images.fromFile("image.png");
ppImage = pres.getImages().addImage(image);
image.dispose();

pres.getSlides().get_Item(0).getShapes().addPictureFrame(ShapeType.Rectangle, 10, 10, 100, 100, ppImage);

pres.dispose();
```

## 將被移除的方法及其在現代 API 中的取代方式

### Presentation
| 方法簽名 | 取代方法簽名 |
|---|---|
| public final BufferedImage[] getThumbnails(IRenderingOptions options) | public final IImage[] getImages(IRenderingOptions options) |
| public final BufferedImage[] getThumbnails(IRenderingOptions options, float scaleX, float scaleY) | public final IImage[] getImages(IRenderingOptions options, float scaleX, float scaleY) |
| public final BufferedImage[] getThumbnails(IRenderingOptions options, int[] slides) | public final IImage[] getImages(IRenderingOptions options, int[] slides) |
| public final BufferedImage[] getThumbnails(IRenderingOptions options, int[] slides, float scaleX, float scaleY) | public final IImage[] getImages(IRenderingOptions options, int[] slides, float scaleX, float scaleY) |
| public final BufferedImage[] getThumbnails(IRenderingOptions options, int[] slides, Dimension imageSize) | public final IImage[] getImages(IRenderingOptions options, int[] slides, Dimension imageSize) |
| public final BufferedImage[] getThumbnails(IRenderingOptions options, Dimension imageSize) | public final IImage[] getImages(IRenderingOptions options, Dimension imageSize) |

### Shape
| 方法簽名 | 取代方法簽名 |
|---|---|
| public final BufferedImage getThumbnail() | public final IImage getImage() |
| public final BufferedImage getThumbnail(int bounds, float scaleX, float scaleY) | public final IImage getImage(int bounds, float scaleX, float scaleY) |

### Slide
| 方法簽名 | 取代方法簽名 |
|---|---|
| public final BufferedImage getThumbnail() | public final IImage getImage() |
| public final BufferedImage getThumbnail(float scaleX, float scaleY) | public final IImage getImage(float scaleX, float scaleY) |
| public final BufferedImage getThumbnail(IRenderingOptions options) | public final IImage getImage(IRenderingOptions options) |
| public final BufferedImage getThumbnail(IRenderingOptions options, float scaleX, float scaleY) | public final IImage getImage(IRenderingOptions options) |
| public final BufferedImage getThumbnail(IRenderingOptions options, Dimension imageSize) | public final IImage getImage(IRenderingOptions options, Dimension imageSize) |
| public final BufferedImage getThumbnail(ITiffOptions options) | public final IImage getImage(ITiffOptions options) |
| public final BufferedImage getThumbnail(Dimension imageSize) | public final IImage getImage(Dimension imageSize) |
| public final void renderToGraphics(IRenderingOptions options, Graphics2D graphics) | Will be deleted completely |
| public final void renderToGraphics(IRenderingOptions options, Graphics2D graphics, float scaleX, float scaleY) | Will be deleted completely |
| public final void renderToGraphics(IRenderingOptions options, Graphics2D graphics, Dimension renderingSize) | Will be deleted completely |

### Output
| 方法簽名 | 取代方法簽名 |
|---|---|
| public final IOutputFile add(String path, BufferedImage image) | public final IOutputFile add(String path, IImage image) |

### ImageCollection
| 方法簽名 | 取代方法簽名 |
|---|---|
| public final IPPImage addImage(BufferedImage image) | public final IPPImage addImage(IImage image) |

### PPImage
| 方法簽名 | 取代方法簽名 |
|---|---|
| public final BufferedImage getSystemImage() | public final IImage getImage() |

### PatternFormat
| 方法簽名 | 取代方法簽名 |
|---|---|
| public final BufferedImage getTileImage(Color styleColor) | public final IImage getTile(Color styleColor) |
| public final BufferedImage getTileImage(Color background, Color foreground) | public final IImage getTile(Color background, Color foreground) |

### PatternFormatEffectiveData
| 方法簽名 | 取代方法簽名 |
|---|---|
| public final java.awt.image.BufferedImage getTileImage(Color background, Color foreground) | public final IImage getTileIImage(Color background, Color foreground) |

## Graphics2D 的 API 支援將停止

含有 [Graphics2D](https://docs.oracle.com/javase/8/docs/api/java/awt/Graphics2D.html) 的方法已標記為過時，且其支援將從公開 API 中移除。

使用該介面的 API 部分將被移除：

[Slide](https://reference.aspose.com/slides/zh-hant/java/com.aspose.slides/slide/)

- [public final void renderToGraphics(IRenderingOptions options, Graphics2D graphics)](https://reference.aspose.com/slides/zh-hant/java/com.aspose.slides/slide/#renderToGraphics-com.aspose.slides.IRenderingOptions-java.awt.Graphics2D-)
- [public final void renderToGraphics(IRenderingOptions options, Graphics2D graphics, float scaleX, float scaleY)](https://reference.aspose.com/slides/zh-hant/java/com.aspose.slides/slide/#renderToGraphics-com.aspose.slides.IRenderingOptions-java.awt.Graphics2D-float-float-)
- [public final void renderToGraphics(IRenderingOptions options, Graphics2D graphics, Dimension renderingSize)](https://reference.aspose.com/slides/zh-hant/java/com.aspose.slides/slide/#renderToGraphics-com.aspose.slides.IRenderingOptions-java.awt.Graphics2D-java.awt.Dimension-)