implemented mouse support via special ^KMOUSE and <EJ> with negative keys

* You need to set 0,64ED to enable mouse processing in Curses.
  It is always enabled in Gtk as it should never make the experience worse.
  sample.teco_ini enables mouse support, since this should be the new default.
  `sciteco --no-profile` won't have it enabled, though.
* On curses, it requires the ncurses mouse protocol version 2, which will
  also be supported by PDCurses.
* Similar to the Curses API, a special key macro ^KMOUSE is inserted if any of the supported
  mouse events has been detected.
* You can then use -EJ to get the type of mouse event, which can be used
  with a computed goto in the command-line editing macro.
  Alternatively, this could have been solved with separate ^KMOUSE:PRESSED,
  ^KMOUSE:RELEASED etc. pseudo-key macros.
* The default ^KMOUSE implementation in fnkeys.tes supports the following:
  * Left click: Edit command line to jump to position.
  * Ctrl+left click: Jump to beginning of line.
  * Right click: Insert position or position range (when dragging).
  * Double right click: insert range for word under cursor
  * Ctrl+right click: Insert beginning of line
  * Scroll wheel: scrolls (faster with shift)
  * Ctrl+scroll wheel: zoom (GTK-only)
* Currently, there is no visual feedback when "selecting" ranges
  via right-click+drag.
  This would be tricky to do and most terminal emulators do not appear
  to support continuous mouse updates.

1 files changed, 22 insertions, 0 deletions

diff --git a/src/interface.h b/src/interface.h
index 12e76fb..967f14d 100644
--- a/src/interface.h
+++ b/src/interface.h
@@ -141,6 +141,28 @@ void teco_interface_popup_clear(void);
 /** @pure */
 gboolean teco_interface_is_interrupted(void);
 
+typedef struct {
+	enum {
+		TECO_MOUSE_PRESSED = 1,
+		TECO_MOUSE_RELEASED,
+		TECO_MOUSE_SCROLLUP,
+		TECO_MOUSE_SCROLLDOWN
+	} type;
+
+	guint x;	/*< X-coordinate relative to view */
+	guint y;	/*< Y-coordinate relative to view */
+
+	gint button;	/*< number of pressed mouse button or -1 */
+
+	enum {
+		TECO_MOUSE_SHIFT	= (1 << 0),
+		TECO_MOUSE_CTRL		= (1 << 1),
+		TECO_MOUSE_ALT		= (1 << 2)
+	} mods;
+} teco_mouse_t;
+
+extern teco_mouse_t teco_mouse;
+
 /** @pure main entry point */
 gboolean teco_interface_event_loop(GError **error);