本文整理汇总了Java中javax.microedition.lcdui.Image.getGraphics方法的典型用法代码示例。如果您正苦于以下问题：Java Image.getGraphics方法的具体用法？Java Image.getGraphics怎么用？Java Image.getGraphics使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类javax.microedition.lcdui.Image的用法示例。
在下文中一共展示了Image.getGraphics方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: createThumbnail
import javax.microedition.lcdui.Image; //导入方法依赖的package包/类
public static Image createThumbnail(Image image) {
int sourceWidth = image.getWidth();
int sourceHeight = image.getHeight();
int thumbWidth = 64;
int thumbHeight = -1;
if (thumbHeight == -1)
thumbHeight = thumbWidth * sourceHeight / sourceWidth;
Image thumb = Image.createImage(thumbWidth, thumbHeight);
Graphics g = thumb.getGraphics();
for (int y = 0; y < thumbHeight; y++) {
for (int x = 0; x < thumbWidth; x++) {
g.setClip(x, y, 1, 1);
int dx = x * sourceWidth / thumbWidth;
int dy = y * sourceHeight / thumbHeight;
g
.drawImage(image, x - dx, y - dy, Graphics.LEFT
| Graphics.TOP);
}
}
Image immutableThumb = Image.createImage(thumb);
return immutableThumb;
}
示例2: resizeImage
import javax.microedition.lcdui.Image; //导入方法依赖的package包/类
/**
* This methog resizes an image by resampling its pixels
* @param src The image to be resized
* @return The resized image
*/
public static Image resizeImage(Image src, int newWidth, int newHeight) {
//We need to make sure we have memory available if it exists, because we're going to be allocating huuuge
//chunks, and that might fail even if those chunks would be available if we collected.
Runtime.getRuntime().gc();
int srcWidth = src.getWidth();
int srcHeight = src.getHeight();
Image tmp = Image.createImage(newWidth, srcHeight);
Graphics g = tmp.getGraphics();
int ratio = (srcWidth << 16) / newWidth;
int pos = ratio/2;
//Horizontal Resize
for (int x = 0; x < newWidth; x++) {
g.setClip(x, 0, 1, srcHeight);
g.drawImage(src, x - (pos >> 16), 0, Graphics.LEFT | Graphics.TOP);
pos += ratio;
}
Image resizedImage = Image.createImage(newWidth, newHeight);
g = resizedImage.getGraphics();
ratio = (srcHeight << 16) / newHeight;
pos = ratio/2;
//Vertical resize
for (int y = 0; y < newHeight; y++) {
g.setClip(0, y, newWidth, 1);
g.drawImage(tmp, 0, y - (pos >> 16), Graphics.LEFT | Graphics.TOP);
pos += ratio;
}
return resizedImage;
}