From e4e3047bd5e9c8e010041aec196a77797e420332 Mon Sep 17 00:00:00 2001
From: Jeremy Klein <jlklein@google.com>
Date: Fri, 25 Sep 2015 15:32:12 -0700
Subject: Add support for mouse wheel forwarding.

---
 app/src/main/java/de/mud/terminal/VDUInput.java | 11 +++++++++
 app/src/main/java/de/mud/terminal/vt320.java    | 32 +++++++++++++++++++++++++
 2 files changed, 43 insertions(+)

(limited to 'app/src/main/java/de')

diff --git a/app/src/main/java/de/mud/terminal/VDUInput.java b/app/src/main/java/de/mud/terminal/VDUInput.java
index abaa70f..e1bce90 100644
--- a/app/src/main/java/de/mud/terminal/VDUInput.java
+++ b/app/src/main/java/de/mud/terminal/VDUInput.java
@@ -56,6 +56,17 @@ public interface VDUInput {
    */
   void mousePressed(int x, int y, int modifiers);
 
+  /**
+   * Passes mouse wheel events to the terminal.
+   * @param down True if scrolling down the page. False if scrolling up.
+   * @param x
+   * @param y
+   * @param ctrl
+   * @param shift
+   * @param meta
+   */
+  public void mouseWheel(boolean down, int x, int y, boolean ctrl, boolean shift, boolean meta);
+
   /**
    * Terminal is mouse-aware and requires the coordinates and button
    * of the release.
diff --git a/app/src/main/java/de/mud/terminal/vt320.java b/app/src/main/java/de/mud/terminal/vt320.java
index 4f36f28..90c7403 100644
--- a/app/src/main/java/de/mud/terminal/vt320.java
+++ b/app/src/main/java/de/mud/terminal/vt320.java
@@ -375,6 +375,38 @@ public void setScreenSize(int c, int r, boolean broadcast) {
     write(b); // FIXME: writeSpecial here
   }
 
+  /**
+   * Passes mouse wheel events to the terminal.
+   * @param down True if scrolling down the page. False if scrolling up.
+   * @param x
+   * @param y
+   * @param ctrl
+   * @param shift
+   * @param meta
+   */
+  public void mouseWheel(boolean down, int x, int y, boolean ctrl, boolean shift, boolean meta) {
+   if (mouserpt == 0 || mouserpt == 9)
+    return;
+
+   int mods = 0;
+   if (ctrl) mods |= 2;
+   if (shift) mods |= 1;
+   if (meta) mods |= 4;
+
+   int mousecode = ((down ? 0 : 1) + 96) | 0x20 | ((mods & 7) << 2);
+
+   byte b[] = new byte[6];
+
+   b[0] = 27;
+   b[1] = (byte) '[';
+   b[2] = (byte) 'M';
+   b[3] = (byte) mousecode;
+   b[4] = (byte) (0x20 + x + 1);
+   b[5] = (byte) (0x20 + y + 1);
+
+   write(b); // FIXME: writeSpecial here
+  }
+
   /**
    * Terminal is mouse-aware and requires the coordinates and button
    * of the release.
-- 
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