From bd0732cfec8982dd3d728defe6728d3116d12af2 Mon Sep 17 00:00:00 2001
From: Marco Stefanetti <marco.stefanetti@gmail.com>
Date: Mon, 26 Oct 2020 20:29:21 +0000
Subject: [PATCH] JFrame, JPanel and mouse handling
---
.../com/aparapi/examples/mandel/AfGUI.java | 178 ++++++++++++++++++
1 file changed, 178 insertions(+)
create mode 100644 src/main/java/com/aparapi/examples/mandel/AfGUI.java
diff --git a/src/main/java/com/aparapi/examples/mandel/AfGUI.java b/src/main/java/com/aparapi/examples/mandel/AfGUI.java
new file mode 100644
index 00000000..f0f2eefa
--- /dev/null
+++ b/src/main/java/com/aparapi/examples/mandel/AfGUI.java
@@ -0,0 +1,178 @@
+package com.aparapi.examples.mandel;
+
+import java.awt.Color;
+import java.awt.Graphics;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseMotionAdapter;
+import java.awt.event.MouseWheelEvent;
+import java.awt.event.MouseWheelListener;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+import java.awt.image.BufferedImage;
+
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+
+public class AfGUI {
+
+ private AfMain main;
+
+ private JFrame frame;
+
+ private int __COLORS=128;
+ private int __BLACK=Color.BLACK.getRGB();
+
+ private int[] colors=new int[__COLORS];
+ private BufferedImage image;
+ private JPanel panel;
+
+ boolean dragging = false;
+ private int px;
+ private int py;
+
+
+ public AfGUI(AfMain _main) {
+
+ main = _main;
+
+ for(int c=0;c<__COLORS;c++)
+ {
+ float hue = (float) c/ (float) __COLORS;
+ float saturation = 1.0f;
+ float brightness = 1.0f;
+ Color color = Color.getHSBColor(hue, saturation, brightness);
+ colors[c] = color.getRGB();
+ }
+
+
+ frame = new JFrame("Fractals");
+ frame.setSize(main.W, main.H);
+ frame.setBackground(Color.BLACK);
+
+ frame.addWindowListener(new WindowAdapter() {
+ public void windowClosing(WindowEvent windowEvent) {
+ System.exit(0);
+ }
+ });
+
+ panel = new JPanel() {
+ private static final long serialVersionUID = -2006337199526432552L;
+
+ public void paint(Graphics g) {
+ g.drawImage(image, 0, 0, this);
+ }
+ };
+ panel.setBackground(Color.BLACK);
+ panel.setSize(main.W, main.H);
+
+ image = new BufferedImage(main.W, main.H, BufferedImage.TYPE_INT_RGB);
+
+ frame.add(panel);
+
+
+ frame.addMouseWheelListener(new MouseWheelListener() {
+
+ @Override
+ public void mouseWheelMoved(MouseWheelEvent e) {
+
+ e.consume();
+
+ int amount = (e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) ? e.getUnitsToScroll()
+ : (e.getWheelRotation() < 0 ? -1 : 1);
+
+ System.out.printf("wheel %d \n", amount);
+
+ float zoom = 1f + ((float) amount * 5 / 100f);
+ main.move(main.W / 2, main.H / 2, zoom);
+ main.refresh();
+
+ }
+ });
+
+ frame.addMouseListener(new MouseAdapter() {
+ @Override
+ public void mouseClicked(MouseEvent e) {
+
+ if (e.getClickCount() == 2 && !e.isConsumed()) {
+ e.consume();
+ System.out.println("Double Click");
+ main.move(e.getPoint().x, main.H - e.getPoint().y , 1f);
+ main.refresh();
+ }
+
+ }
+
+ @Override
+ public void mousePressed(MouseEvent e) {
+
+ System.out.printf("mouse pressed %d %d \n", e.getPoint().x, e.getPoint().y);
+ px = e.getPoint().x;
+ py = e.getPoint().y;
+ dragging=true;
+ }
+
+ @Override
+ public void mouseReleased(MouseEvent event) {
+
+ dragging = false;
+ }
+
+ });
+
+ frame.addMouseMotionListener(new MouseMotionAdapter() {
+
+
+ @Override
+ public void mouseDragged(MouseEvent e) {
+
+ if(dragging)
+ {
+ int nx = e.getPoint().x;
+ int ny = e.getPoint().y;
+
+ int dx = px - nx;
+ int dy = py - ny;
+
+ System.out.printf("mouse drag %d,%d \n", dx, dy);
+ main.move(main.W/2 + dx, main.H/2 - dy, 1f);
+ main.refresh();
+
+ px=nx;
+ py=ny;
+ }
+ }
+
+ });
+
+ frame.setVisible(true);
+ int cw = panel.getWidth();
+ int ch = panel.getHeight();
+ frame.setSize(2 * main.W - cw, 2 * main.H - ch);
+ panel.setSize(main.W, main.H);
+
+ }
+
+ public void setColor(int i, int j, int t) {
+
+ int c = colors[t%__COLORS];
+
+ if (t >= main.max_iterations)
+ c = __BLACK;
+
+ image.setRGB(i, main.H - j - 1, c);
+
+ }
+
+ public void refresh() {
+
+ for (int k = 0; k < main.rgb.length; k++)
+ setColor(k / main.W, k % main.W, main.rgb[k]);
+
+ panel.repaint();
+
+ System.out.printf("canvas refreshed : %d x %d \n", panel.getWidth(), panel.getHeight());
+
+ }
+
+}
--
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