1 files changed, 124 insertions, 0 deletions
diff --git a/unix/tx/TXButton.h b/unix/tx/TXButton.h
new file mode 100644
index 00000000..b7472797
--- /dev/null
+++ b/unix/tx/TXButton.h
@@ -0,0 +1,124 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * 
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+//
+// TXButton.h
+//
+// A TXButton is a clickable button with some text in it.  The button must be
+// big enough to contain the text - if not then it will be resized
+// appropriately.
+//
+
+#ifndef __TXBUTTON_H__
+#define __TXBUTTON_H__
+
+#include "TXWindow.h"
+#include <rfb/util.h>
+
+// TXButtonCallback's buttonActivate() method is called when a button is
+// activated.
+class TXButton;
+class TXButtonCallback {
+public:
+  virtual void buttonActivate(TXButton* button)=0;
+};
+
+
+class TXButton : public TXWindow, public TXEventHandler {
+public:
+
+  TXButton(Display* dpy_, const char* text_, TXButtonCallback* cb_=0,
+           TXWindow* parent_=0, int w=1, int h=1)
+    : TXWindow(dpy_, w, h, parent_), cb(cb_), down(false),
+      disabled_(false)
+  {
+    setEventHandler(this);
+    setText(text_);
+    gc = XCreateGC(dpy, win(), 0, 0);
+    XSetFont(dpy, gc, defaultFont);
+    addEventMask(ExposureMask | ButtonPressMask | ButtonReleaseMask);
+  }
+
+  virtual ~TXButton() {
+    XFreeGC(dpy, gc);
+  }
+
+  // setText() changes the text in the button.
+  void setText(const char* text_) {
+    text.buf = rfb::strDup(text_);
+    int textWidth = XTextWidth(defaultFS, text.buf, strlen(text.buf));
+    int textHeight = (defaultFS->ascent + defaultFS->descent);
+    int newWidth = __rfbmax(width(), textWidth + xPad*2 + bevel*2);
+    int newHeight = __rfbmax(height(), textHeight + yPad*2 + bevel*2);
+    if (width() < newWidth || height() < newHeight) {
+      resize(newWidth, newHeight);
+    }
+  }
+
+  // disabled() sets or queries the disabled state of the checkbox.  A disabled
+  // checkbox cannot be changed via the user interface.
+  void disabled(bool b) { disabled_ = b; paint(); }
+  bool disabled() { return disabled_; }
+
+private:
+
+  void paint() {
+    int tw = XTextWidth(defaultFS, text.buf, strlen(text.buf));
+    int startx = (width() - tw) / 2;
+    int starty = (height() + defaultFS->ascent - defaultFS->descent) / 2;
+    if (down || disabled_) {
+      drawBevel(gc, 0, 0, width(), height(), bevel, defaultBg, darkBg,lightBg);
+      startx++; starty++;
+    } else {
+      drawBevel(gc, 0, 0, width(), height(), bevel, defaultBg, lightBg,darkBg);
+    }
+
+    XSetForeground(dpy, gc, disabled_ ? disabledFg : defaultFg);
+    XDrawString(dpy, win(), gc, startx, starty, text.buf, strlen(text.buf));
+  }
+
+  virtual void handleEvent(TXWindow* w, XEvent* ev) {
+    switch (ev->type) {
+    case Expose:
+      paint();
+      break;
+    case ButtonPress:
+      if (!disabled_) {
+        down = true;
+        paint();
+      }
+      break;
+    case ButtonRelease:
+      if (!down) break;
+      down = false;
+      paint();
+      if (ev->xbutton.x >= 0 && ev->xbutton.x < width() &&
+          ev->xbutton.y >= 0 && ev->xbutton.y < height()) {
+        if (cb) cb->buttonActivate(this);
+      }
+      break;
+    }
+  }
+
+  GC gc;
+  rfb::CharArray text;
+  TXButtonCallback* cb;
+  bool down;
+  bool disabled_;
+};
+
+#endif