Add "Paste" command to krdc (#102).

This adds a "Paste" command to the toolbar which sends the current
clipboard content to the remote host as key presses.

Not implemented for RDP as we appear to defer to rdesktop and I'm not
sure if we can reliably do it there (also krdc RDP isn't working for me
right now).

(cherry picked from commit 123ecc2bd9)

krdc/krdc.cpp

@@ -33,6 +33,7 @@
 #include <tdemessagebox.h>
 #include <twin.h>
 #include <tdestartupinfo.h>
+#include <tqclipboard.h>
 
 #include <tqdockarea.h>
 #include <tqlabel.h>
@@ -51,6 +52,7 @@ const int FS_HOSTLABEL_ID = 4;
 const int FS_ADVANCED_ID = 5;
 const int FS_ICONIFY_ID = 6;
 const int FS_CLOSE_ID = 7;
+const int FS_PASTE_ID = 8;
 
 const int KRDC::TOOLBAR_AUTOHIDE_TIMEOUT = 1000;
 const int KRDC::TOOLBAR_FPS_1000 = 10000;
@@ -373,6 +375,13 @@ void KRDC::enableFullscreen(bool on)
 	m_view->switchFullscreen(on);
 }
 
+void KRDC::paste()
+{
+	TQClipboard *cb = TQApplication::clipboard();
+	TQString text = cb->text(TQClipboard::Clipboard);
+	m_view->sendString(text);
+}
+
 TQSize KRDC::sizeHint()
 {
 	if ((m_isFullscreen != WINDOW_MODE_FULLSCREEN) && m_toolbar) {
@@ -499,6 +508,14 @@ void KRDC::switchToFullscreen(bool scaling)
 	t->setButton(FS_FULLSCREEN_ID, true);
 	t->addConnection(FS_FULLSCREEN_ID, TQ_SIGNAL(toggled(bool)), this, TQ_SLOT(enableFullscreen(bool)));
 
+	if(m_view->supportsSendString())
+	{
+		t->insertButton("edit-paste", FS_PASTE_ID);
+		TDEToolBarButton *pasteButton = t->getButton(FS_PASTE_ID);
+		TQToolTip::add(pasteButton, i18n("Sends clipboard text to the remote system as key presses"));
+		t->addConnection(FS_PASTE_ID, TQ_SIGNAL(clicked()), this, TQ_SLOT(paste()));
+	}
+
 	m_popup = createPopupMenu(t);
 	t->insertButton("configure", FS_ADVANCED_ID, m_popup, true, i18n("Advanced options"));
 	TDEToolBarButton *advancedButton = t->getButton(FS_ADVANCED_ID);
@@ -621,6 +638,14 @@ void KRDC::switchToNormal(bool scaling)
 			m_popup = 0;
 		}
 
+		if(m_view->supportsSendString())
+		{
+			t->insertButton("edit-paste", 4, true, i18n("Paste"));
+			TDEToolBarButton *pasteButton = t->getButton(4);
+			TQToolTip::add(pasteButton, i18n("Sends clipboard text to the remote system as key presses"));
+			t->addConnection(4, TQ_SIGNAL(clicked()), this, TQ_SLOT(paste()));
+		}
+
 		m_popup = createPopupMenu(t);
 		t->insertButton("configure", 3, m_popup, true, i18n("Advanced"));
 		TDEToolBarButton *advancedButton = t->getButton(3);

krdc/krdc.h

@@ -163,6 +163,7 @@ private slots:
 public slots:
 	void quit();
 	void enableFullscreen(bool full = false);
+	void paste();
 	void switchToNormal(bool scaling = false);
 	void switchToFullscreen(bool scaling = false);
 	void viewOnlyToggled();

krdc/kremoteview.cpp

@@ -86,4 +86,10 @@ void KRemoteView::enableScaling(bool) {
 void KRemoteView::switchFullscreen(bool) {
 }
 
+bool KRemoteView::supportsSendString() const {
+	return false;
+}
+
+void KRemoteView::sendString(const TQString &s) {}
+
 #include "kremoteview.moc"

krdc/kremoteview.h

@@ -227,6 +227,18 @@ public slots:
 	 */
         virtual void pressKey(XEvent *k) = 0;
 
+	/**
+	 * Checks whether the backend sending a string of characters.
+	 * Default implementation returns false.
+	*/
+	virtual bool supportsSendString() const;
+
+	/**
+	 * Sends a string of characters to the remote server as key presses.
+	 * Default implementation does nothing.
+	*/
+	virtual void sendString(const TQString &s);
+
 signals:
         /**
 	 * Emitted when the size of the remote screen changes. Also

krdc/vnc/kvncview.cpp

@@ -645,6 +645,57 @@ void KVncView::pressKey(XEvent *xe) {
 	m_mods.clear();
 }
 
+bool KVncView::supportsSendString() const
+{
+	return true;
+}
+
+void KVncView::sendString(const TQString &s)
+{
+	if (m_status != REMOTE_VIEW_CONNECTED)
+		return;
+	if (m_viewOnly)
+		return;
+
+	for(uint i = 0; i < s.length(); ++i)
+	{
+		/* X11 reserves keysyms 0x01000000 to 0x0110FFFF for Unicode code-points
+		 * (see keysymdef.h).
+		*/
+		uint sym = s[i].unicode() + 0x01000000;
+
+		/* Convert line breaks to return (enter). */
+		if(s[i] == '\n')
+		{
+			sym = XK_Return;
+		}
+
+		/* If the character is upper-case and below code-point 0x3000 (most western
+		 * languages), assume the shift key is required (based on kkeyserver_x11.cpp).
+		*/
+		bool shift = false;
+		if(s[i].unicode() < 0x3000 && s[i].isLetter() && s[i].lower() != s[i].upper() && s[i] == s[i].upper())
+		{
+			m_cthreadObject.queueKeyEvent(XK_Shift_L, true);
+			shift = true;
+		}
+
+		m_cthreadObject.queueKeyEvent(sym, true);
+		m_cthreadObject.queueKeyEvent(sym, false);
+
+		if(shift)
+		{
+			m_cthreadObject.queueKeyEvent(XK_Shift_L, false);
+		}
+
+		#if 0
+		fprintf(stderr, "Sent character: '%s' (sym = %u, shift = %s)\n",
+			(const char*)(TQString(s[i]).local8Bit()),
+			(unsigned)(sym), (shift ? "yes" : "no"));
+		#endif
+	}
+}
+
 bool KVncView::x11Event(XEvent *e) {
 	bool pressed;
 	if (e->type == KeyPress)

krdc/vnc/kvncview.h

@@ -114,6 +114,8 @@ public slots:
 	virtual void enableScaling(bool s);
 	virtual void setViewOnly(bool s);
 	virtual void pressKey(XEvent *k);
+	virtual bool supportsSendString() const;
+	virtual void sendString(const TQString &s);
 
 
 private slots: