/// <summary>
/// Renders an area's background.
/// </summary>
/// <param name="area">The area whose background is to be rendered.</param>
/// <param name="x">The x position of the left edge in millipoints.</param>
/// <param name="y">The y position of top edge in millipoints.</param>
/// <param name="w">The width in millipoints.</param>
/// <param name="h">The height in millipoints.</param>
private void DoBackground(Area area, int x, int y, int w, int h) {
if (h == 0 || w == 0) {
return;
}
BackgroundProps props = area.getBackground();
if (props == null) {
return;
}
if (props.backColor.Alpha == 0) {
AddFilledRect(x, y, w, -h, new PdfColor(props.backColor));
}
if (props.backImage != null) {
int imgW = props.backImage.Width*1000;
int imgH = props.backImage.Height*1000;
int dx = x;
int dy = y;
int endX = x + w;
int endY = y - h;
int clipW = w%imgW;
int clipH = h%imgH;
bool repeatX = true;
bool repeatY = true;
switch (props.backRepeat) {
case BackgroundRepeat.REPEAT:
break;
case BackgroundRepeat.REPEAT_X:
repeatY = false;
break;
case BackgroundRepeat.REPEAT_Y:
repeatX = false;
break;
case BackgroundRepeat.NO_REPEAT:
repeatX = false;
repeatY = false;
break;
case BackgroundRepeat.INHERIT:
break;
default:
FonetDriver.ActiveDriver.FireFonetWarning("Ignoring invalid background-repeat property");
break;
}
while (dy > endY) { // looping through rows
while (dx < endX) { // looping through cols
if (dx + imgW <= endX) {
// no x clipping
if (dy - imgH >= endY) {
// no x clipping, no y clipping
DrawImageScaled(dx, dy, imgW, imgH, props.backImage);
}
else {
// no x clipping, y clipping
DrawImageClipped(dx, dy, 0, 0, imgW, clipH, props.backImage);
}
}
else {
// x clipping
if (dy - imgH >= endY) {
// x clipping, no y clipping
DrawImageClipped(dx, dy, 0, 0, clipW, imgH, props.backImage);
}
else {
// x clipping, y clipping
DrawImageClipped(dx, dy, 0, 0, clipW, clipH, props.backImage);
}
}
if (repeatX) {
dx += imgW;
}
else {
break;
}
} // end looping through cols
dx = x;
if (repeatY) {
dy -= imgH;
}
else {
break;
}
} // end looping through rows
}
}
