First draft component

Author: vincenzopalazzo

src/main/java/io/vincenzopalazzo/placeholder/JTextFieldPlaceholder.java

@@ -1,5 +1,7 @@
 package io.vincenzopalazzo.placeholder;
 
+import mdlaf.shadows.RoundedCornerBorder;
+
 import javax.swing.*;
 import javax.swing.border.Border;
 import java.awt.*;
@@ -23,7 +25,7 @@ protected void initView(){
 
         placeholder = new JLabel();
         separator = new JSeparator(JSeparator.VERTICAL);
-        placeholder.setBorder(BorderFactory.createEmptyBorder(5,0,5,2));
+        placeholder.setBorder(BorderFactory.createEmptyBorder(0,0,0,2));
         this.add(placeholder);
         this.add(separator);
 
@@ -32,6 +34,11 @@ protected void initView(){
         textField.setPreferredSize(new Dimension(50, 20));
         textField.setSize(new Dimension(50, 20));
         super.add(textField);
+
+        textField.setBorder(BorderFactory.createEmptyBorder());
+        iconContainer.setBorder(BorderFactory.createEmptyBorder());
+        placeholder.setBorder(BorderFactory.createEmptyBorder());
+        setBorder(new RoundedCornerBorder(getBackground(), 6));
     }
 
     protected void initStyle(){
@@ -40,6 +47,17 @@ protected void initStyle(){
         iconContainer.setBackground(getBackground());
     }
 
+    @Override
+    protected void paintComponent(Graphics g) {
+        super.paintComponent(g);
+        this.paintLine(g);
+    }
+
+    protected void paintLine(Graphics graphics){
+        graphics.setColor(Color.CYAN);
+        graphics.fillRect(iconContainer.getX(), this.getHeight() - this.getY(), this.getWidth() - iconContainer.getWidth(), 1);
+    }
+
     public JTextFieldPlaceholder setIcon(Icon icon){
         if(icon == null) throw new IllegalArgumentException("icon null");
         iconContainer.setIcon(icon);

src/main/java/io/vincenzopalazzo/placeholder/RoundedCornerBorder.java

@@ -0,0 +1,102 @@
+/**
+ * MIT License
+ *
+ * Copyright (c) 2019-2020 Vincenzo Palazzo vincenzopalazzo1996@gmail.com
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package mdlaf.shadows;
+
+import mdlaf.utils.MaterialColors;
+
+import javax.swing.*;
+import javax.swing.border.AbstractBorder;
+import java.awt.*;
+import java.awt.geom.Area;
+import java.awt.geom.Rectangle2D;
+import java.awt.geom.RoundRectangle2D;
+import java.util.Objects;
+
+/**
+ * @author https://github.com/vincenzopalazzo
+ */
+public class RoundedCornerBorder extends AbstractBorder {
+
+    protected  int arch = 12; //default value
+    protected Color colorLine;
+    protected float withBorder = 1.2f;
+
+    public RoundedCornerBorder() {
+        colorLine = MaterialColors.LIGHT_BLUE_400;
+    }
+
+    public RoundedCornerBorder(Color colorLine) {
+        this.colorLine = colorLine;
+        //alphaZero = new Color(0x0, true);
+    }
+
+    public RoundedCornerBorder(Color colorLine, int arch) {
+        this.colorLine = colorLine;
+        this.arch = arch;
+    }
+
+    public RoundedCornerBorder(int arch, Color colorLine, float withBorder) {
+        this.arch = arch;
+        this.colorLine = colorLine;
+        this.withBorder = withBorder;
+    }
+
+    @Override
+    public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {
+        Graphics2D g2 = (Graphics2D) g.create();
+        g2.setStroke(new BasicStroke(withBorder));
+        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
+        int r = arch;
+        int w = width - 1;
+        int h = height - 1;
+
+        Area round = new Area(new RoundRectangle2D.Float(x, y, w, h, r, r));
+        if (c instanceof JPopupMenu) {
+            g2.setPaint(c.getBackground());
+            g2.fill(round);
+        } else {
+            Container parent = c.getParent();
+            if (Objects.nonNull(parent)) {
+                g2.setPaint(parent.getBackground());
+                Area corner = new Area(new Rectangle2D.Float(x, y, width, height));
+                corner.subtract(round);
+                g2.fill(corner);
+            }
+        }
+        g2.setPaint(colorLine);
+        g2.draw(round);
+        g2.dispose();
+    }
+
+    @Override
+    public Insets getBorderInsets(Component c) {
+        return new Insets(4, 8, 4, 8);
+    }
+
+    @Override
+    public Insets getBorderInsets(Component c, Insets insets) {
+        insets.set(4, 8, 4, 8);
+        return insets;
+    }
+}