listing15-09_argbrectangle.java_circumventingbugs

来自「着几乎所有智能机厂商都将有自己配套的App Store,甚至并非智能手机制造商的」· JAVA_CIRCUMVENTINGBUGS 代码 · 共 37 行

// Listing 15-9. Circumventing the drawRgbOrigin Issue

public void paintArgbColor( int argbColor, int x, int y,
	int width, int height, Graphics g )
{
	// circumvent the drawRgbOrigin issue when it is present:
	//#ifdef polish.Bugs.drawRgbOrigin
		x += g.getTranslateX();
		y += g.getTranslateY();
	//#endif

	// in reality you need to buffer this:
	int[] rgbBuffer = new int[ width ];
	for ( int i = rgbBuffer.length - 1; i >= 0 ; i-- ) {
		rgbBuffer[ i ] = argbColor;
	}

	// defensive programming: some implementations
	// don't accept negative coordinates:
	if ( x < 0 ) {
		width += x;
		if ( width < 0 ) {
			return;
		}
		x = 0;
	}
	if ( y < 0 ) {
		height += y;
		if ( height < 0 ) {
			return;
		}
		y = 0;
	}
	// now paint the RGB data:
	g.drawRGB( rgbBuffer, 0, 0, x, y, width, height, true );
}