private static Optional<Color> getColor(LayoutBox layoutBox, String name) {
switch (layoutBox.getType()) {
case BLOCK_NODE:
case INLINE_NODE:
return ((StyledLayoutBox) layoutBox)
.getStyledNode()
.value(name)
.filter(val -> (val instanceof ColorValue))
.map(val -> ((ColorValue) val).getColor());
case ANONYMOUS_BLOCK:
default:
return Optional.empty();
}
}
private static void renderBorders(List<DisplayCommand> displayList, LayoutBox layoutBox) {
Optional<Color> colorVal = getColor(layoutBox, "border-color");
if (colorVal.isPresent()) {
Color color = colorVal.get();
Dimensions dims = layoutBox.getDimensions();
Rect borderBox = dims.borderBox();
// left border
displayList.add(
new SolidColor(
color, new Rect(borderBox.x, borderBox.y, dims.border.left, borderBox.height)));
// right border
displayList.add(
new SolidColor(
color,
new Rect(
borderBox.x + borderBox.width - dims.border.right,
borderBox.y,
dims.border.right,
borderBox.height)));
// top border
displayList.add(
new SolidColor(
color, new Rect(borderBox.x, borderBox.y, borderBox.width, dims.border.top)));
// bottom border
displayList.add(
new SolidColor(
color,
new Rect(
borderBox.x,
borderBox.y + borderBox.height - dims.border.bottom,
borderBox.width,
dims.border.bottom)));
}
}
private static void renderLayoutBox(List<DisplayCommand> displayList, LayoutBox layoutBox) {
System.out.println(layoutBox);
switch (layoutBox.getType()) {
case BLOCK_NODE:
renderBackground(displayList, layoutBox);
renderBorders(displayList, layoutBox);
for (LayoutBox child : layoutBox.getChildren()) {
renderLayoutBox(displayList, child);
}
break;
case INLINE_NODE:
InlineBox box = (InlineBox) layoutBox;
Optional<Color> colorVal = getColor(layoutBox, "border-color");
Dimensions dims = layoutBox.getDimensions();
Rect borderBox = dims.borderBox();
Deque<LineBox> lines = box.getLines();
if (colorVal.isPresent()) {
Color color = colorVal.get();
LineBox firstLine = lines.getFirst();
float boxHeight = firstLine.getBoxHeight();
float lineHeight = firstLine.getLineHeight();
float borderHeight = lineHeight + dims.border.top + dims.border.bottom;
// left border
displayList.add(
new SolidColor(
color,
new Rect(
borderBox.x,
borderBox.y + boxHeight - lineHeight,
dims.border.left,
borderHeight)));
LineBox lastLine = lines.getLast();
// right border
displayList.add(
new SolidColor(
color,
new Rect(
borderBox.x
+ lastLine.getFilledWidth()
+ dims.border.left
+ dims.border.right,
borderBox.y + borderHeight * (lines.size() - 1),
dims.border.right,
borderHeight)));
float lineX = dims.content.x - dims.border.left;
float lineY = dims.content.y;
for (LineBox line : box.getLines()) {
// TODO proper line-height calculations
float lineWidth = line.getFilledWidth() + dims.border.left + dims.border.right;
// top border
displayList.add(
new SolidColor(
color, new Rect(lineX, lineY - dims.border.top, lineWidth, dims.border.top)));
// bottom border
displayList.add(
new SolidColor(
color, new Rect(lineX, lineY + lineHeight, lineWidth, dims.border.bottom)));
lineY += borderHeight;
}
}
break;
default:
break;
}
}
private static void renderBackground(List<DisplayCommand> displayList, LayoutBox layoutBox) {
getColor(layoutBox, "background")
.map(
color -> displayList.add(new SolidColor(color, layoutBox.getDimensions().borderBox())));
}