Examples of java.awt.geom.Area.subtract()

java.awt.geom.Area.subtract()
ple: Area a1 = new Area([triangle 0,0 => 8,0 => 0,8]); Area a2 = new Area([triangle 0,0 => 8,0 => 8,8]); a1.subtract(a2); a1(before) - a2 = a1(after) ################ ################ ############## ############## ## ############ ############ #### ########## ########## ###### ######## ######## ######## ###### ###### ###### #### #### #### ## ## ## @param rhs the Area to be subtracted from the current shape @throws NullPointerException if rhs is null @since 1.2

                    Rectangle selection = new Rectangle(x0, 0, x1 - x0, height);


                    // Paint the unselected text
                    Area unselectedArea = new Area();
                    unselectedArea.add(new Area(new Rectangle(0, 0, width, height)));
                    unselectedArea.subtract(new Area(selection));


                    Graphics2D textGraphics = (Graphics2D)graphics.create();
                    textGraphics.setColor(color);
                    textGraphics.clip(unselectedArea);
                    textGraphics.drawGlyphVector(glyphVector, 0, ascent);

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            graphics.setPaint(titleColor);
            graphics.drawString(title, (int)titleBounds.getX(),
                (int)(titleBounds.getY() + titleAscent));


            Area titleClip = new Area(graphics.getClip());
            titleClip.subtract(new Area(titleBounds));
            graphics.clip(titleClip);
        }


        // Draw the border
        if (thickness > 0) {

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                                rowY -= (int)((verticalSpacing * 0.5f) - 0.5f);
                            }


                            Rectangle2D.Float bounds = new Rectangle2D.Float(columnX, rowY,
                                columnWidth, rowHeight);
                            gridClip.subtract(new Area(bounds));
                        }
                    }


                    componentX += columnWidths[j] + horizontalSpacing;
                }

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                        (height - textHeight) / 2 + ascent);
                } else {
                    // Paint the unselected text
                    Area unselectedArea = new Area();
                    unselectedArea.add(new Area(new Rectangle(0, 0, width, height)));
                    unselectedArea.subtract(new Area(selection));


                    Graphics2D textGraphics = (Graphics2D)graphics.create();
                    textGraphics.setColor(color);
                    textGraphics.clip(unselectedArea);
                    textGraphics.drawGlyphVector(glyphVector, padding.left - scrollLeft + 1,

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                graphics2d.setPaint(paint);
                // create a rounded rectangle area as big as the entire title bar, then subtract
                // off the bottom half (roughly) in order to have perfectly square edges.
                Area titleArea = new Area(new Area(new RoundRectangle2D.Double(
                        0, 0, getWidth(), getHeight(), ROUNDED_RECT_DIAMETER, ROUNDED_RECT_DIAMETER)));
                titleArea.subtract(new Area(new Rectangle(0, midPointY, getWidth(), midPointY)));
                // draw the top half of the title bar (the shine).
                graphics2d.fill(titleArea);
                // 2. The bottom half -----------------------------------------------------------//
                // draw the bottom half of the title bar.
                int bottomHeight = getHeight() - midPointY;

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                // create an area that has rounded corners at the top and square corners at the
                // bottom.
                graphics2d.setColor(UNFOCUSED_BACKGROUND);
                Area titleArea = new Area(new Area(new RoundRectangle2D.Double(
                        0, 0, getWidth(), getHeight(), ROUNDED_RECT_DIAMETER, ROUNDED_RECT_DIAMETER)));
                titleArea.subtract(new Area(
                        new Rectangle(0, midPointY, getWidth(), midPointY)));
                graphics2d.fill(titleArea);
                graphics2d.setColor(HIGHLIGHT);
                graphics2d.drawLine(0, getHeight() - 1, getWidth(), getHeight() - 1);
            }

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                                rowY -= (int)((verticalSpacing * 0.5f) - 0.5f);
                            }


                            Rectangle2D.Float bounds = new Rectangle2D.Float(columnX, rowY,
                                columnWidth, rowHeight);
                            gridClip.subtract(new Area(bounds));
                        }
                    }


                    componentX += columnWidths[j] + horizontalSpacing;
                }

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            // Determine the selected and unselected areas
            Area selection = textAreaSkin.getSelection();
            Area selectedArea = selection.createTransformedArea(AffineTransform.getTranslateInstance(-x, -y));
            Area unselectedArea = new Area();
            unselectedArea.add(new Area(new Rectangle2D.Float(0, 0, width, height)));
            unselectedArea.subtract(new Area(selectedArea));


            // Paint the unselected text
            Graphics2D unselectedGraphics = (Graphics2D)graphics.create();
            unselectedGraphics.clip(unselectedArea);
            paint(unselectedGraphics, focused, editable, false);

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            graphics.setPaint(titleColor);
            graphics.drawString(title, (int)titleBounds.getX(),
                (int)(titleBounds.getY() + titleAscent));


            Area titleClip = new Area(graphics.getClip());
            titleClip.subtract(new Area(titleBounds));
            graphics.clip(titleClip);
        }


        // Draw the border
        if (thickness > 0) {

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                        (height - textHeight) / 2 + ascent);
                } else {
                    // Paint the unselected text
                    Area unselectedArea = new Area();
                    unselectedArea.add(new Area(new Rectangle(0, 0, width, height)));
                    unselectedArea.subtract(new Area(selection));


                    Graphics2D textGraphics = (Graphics2D)graphics.create();
                    textGraphics.setColor(colorLocal);
                    textGraphics.clip(unselectedArea);
                    textGraphics.drawGlyphVector(glyphVector, xpos,

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