Create SVG in UI

[clamp.git] / src / main / java / org / onap / clamp / clds / util / drawing / AwtUtils.java

diff --git a/src/main/java/org/onap/clamp/clds/util/drawing/AwtUtils.java b/src/main/java/org/onap/clamp/clds/util/drawing/AwtUtils.java
index f746ab1..a4a5a38 100755 (executable)
--- a/src/main/java/org/onap/clamp/clds/util/drawing/AwtUtils.java
+++ b/src/main/java/org/onap/clamp/clds/util/drawing/AwtUtils.java
@@ -5,6 +5,8 @@
  * Copyright (C) 2019 Nokia. All rights
  *                             reserved.
  * ================================================================================
+ * Modifications Copyright (c) 2019 Samsung
+ * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -17,6 +19,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  * ============LICENSE_END============================================
+ * Modifications copyright (c) 2019 AT&T.
  * ===================================================================
  *
  */
@@ -33,39 +36,58 @@ import java.awt.Rectangle;
 public class AwtUtils {
     private static final int ARROW_W = 4;
     private static final int ARROW_H = 2;
-    private static final  int FONT_SIZE = 12;
-    private static final  int FONT_STYLE = Font.PLAIN;
+    private static final int FONT_SIZE = 12;
+    private static final int FONT_STYLE = Font.PLAIN;
     private static final String FONT_FACE = "SansSerif";
-    private static final Color TRANSPARENT = new Color(0.0f, 0.0f,0.0f,0.0f);
+    private static final Color TRANSPARENT = new Color(0.0f, 0.0f, 0.0f, 0.0f);
+    private static final int TEXT_PADDING = 5;
+
+    private AwtUtils() {
+    }
 
-    static void rectWithText(Graphics2D g2d, String text, Point p, int w, int h) {
-        Rectangle rect = new Rectangle(p.x, p.y, w, h);
+    static void rectWithText(Graphics2D g2d, String text, Point point, int width, int height) {
+        Rectangle rect = new Rectangle(point.x, point.y, width, height);
         g2d.draw(rect);
         Color oldColor = g2d.getColor();
         g2d.setColor(TRANSPARENT);
         g2d.fill(rect);
         g2d.setColor(oldColor);
-        addText(g2d, text, p.x+w/2, p.y+h/2);
+        addText(g2d, text, rect);
     }
 
     static void drawArrow(Graphics2D g2d, Point from, Point to, int lineThickness) {
         int x2 = to.x - lineThickness;
-        g2d.drawLine(from.x, from.y, x2-lineThickness, to.y);
-        g2d.drawPolygon(new int[] {x2-ARROW_W, x2-ARROW_W, x2},new int[] {to.y- ARROW_H, to.y+ ARROW_H, to.y},3);
-        g2d.fillPolygon(new int[] {x2-ARROW_W, x2-ARROW_W, x2},new int[] {to.y- ARROW_H, to.y+ ARROW_H, to.y},3);
+        g2d.drawLine(from.x, from.y, x2 - lineThickness, to.y);
+        g2d.drawPolygon(new int[] { x2 - ARROW_W, x2 - ARROW_W, x2 },
+                new int[] { to.y - ARROW_H, to.y + ARROW_H, to.y }, 3);
+        g2d.fillPolygon(new int[] { x2 - ARROW_W, x2 - ARROW_W, x2 },
+                new int[] { to.y - ARROW_H, to.y + ARROW_H, to.y }, 3);
     }
 
-    private static void addText(Graphics2D g2d, String text, int x, int y) {
-        Font f = new Font(FONT_FACE, FONT_STYLE, FONT_SIZE);
-        g2d.setFont(f);
+    private static void addText(Graphics2D g2d, String text, Rectangle rect) {
+        int textBoundingBoxLimit = rect.width - 2 * TEXT_PADDING;
+        Font font = new Font(FONT_FACE, FONT_STYLE, FONT_SIZE);
+        font = scaleFontToFit(text, textBoundingBoxLimit, g2d, font);
+        Font oldFont = g2d.getFont();
 
+        g2d.setFont(font);
+        g2d.setColor(Color.BLACK);
         FontMetrics fm1 = g2d.getFontMetrics();
-        int w1 = fm1.stringWidth(text);
-        int x1 = x - (w1 / 2);
+        float x1 = rect.x + (float) (rect.width - fm1.stringWidth(text)) / 2;
+        float y1 = rect.y + (float) (rect.height - fm1.getHeight()) / 2 + fm1.getAscent();
+        g2d.drawString(text, x1, y1);
 
-        g2d.setFont(f);
-        g2d.setColor(Color.BLACK);
-        g2d.drawString(text, x1, y);
+        g2d.setFont(oldFont);
+    }
+
+    private static Font scaleFontToFit(String text, int width, Graphics2D g2d, Font font) {
+        float fontSize = font.getSize();
+        float stringWidth = g2d.getFontMetrics(font).stringWidth(text);
+        if (stringWidth <= width) {
+            return font;
+        }
+        fontSize = (width / stringWidth) * fontSize;
+        return font.deriveFont(fontSize);
     }
 
 }