From 1964d19c464d25fb1898a8ea38579f97b36fafd5 Mon Sep 17 00:00:00 2001
From: that <github@that.at>
Date: Thu, 7 Jan 2016 00:41:03 +0100
Subject: gui: add terminal emulator

Emulates enough of a VT-100 to run busybox vi.

Change-Id: I99c829c6c9de2246194ecb8b8b3cdf4ac34a0606
---
 gui/objects.hpp | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

(limited to 'gui/objects.hpp')

diff --git a/gui/objects.hpp b/gui/objects.hpp
index 5e0960777..15ad1e6c2 100644
--- a/gui/objects.hpp
+++ b/gui/objects.hpp
@@ -81,6 +81,7 @@ public:
 	virtual int SetPlacement(Placement placement) { mPlacement = placement; return 0; }
 
 	// SetPageFocus - Notify when a page gains or loses focus
+	// TODO: This should be named NotifyPageFocus for consistency
 	virtual void SetPageFocus(int inFocus __unused) { return; }
 
 protected:
@@ -767,6 +768,43 @@ protected:
 	int RenderConsole(void);
 };
 
+class TerminalEngine;
+class GUITerminal : public GUIScrollList, public InputObject
+{
+public:
+	GUITerminal(xml_node<>* node);
+
+public:
+	// Update - Update any UI component animations (called <= 30 FPS)
+	//  Return 0 if nothing to update, 1 on success and contiue, >1 if full render required, and <0 on error
+	virtual int Update(void);
+
+	// NotifyTouch - Notify of a touch event
+	//  Return 0 on success, >0 to ignore remainder of touch, and <0 on error (Return error to allow other handlers)
+	virtual int NotifyTouch(TOUCH_STATE state, int x, int y);
+
+	// NotifyKey - Notify of a key press
+	//  Return 0 on success (and consume key), >0 to pass key to next handler, and <0 on error
+	virtual int NotifyKey(int key, bool down);
+
+	// character input
+	virtual int NotifyCharInput(int ch);
+
+	// SetPageFocus - Notify when a page gains or loses focus
+	virtual void SetPageFocus(int inFocus);
+
+	// ScrollList interface
+	virtual size_t GetItemCount();
+	virtual void RenderItem(size_t itemindex, int yPos, bool selected);
+	virtual void NotifySelect(size_t item_selected);
+protected:
+	void InitAndResize();
+
+	TerminalEngine* engine; // non-visual parts of the terminal (text buffer etc.), not owned
+	int updateCounter; // to track if anything changed in the back-end
+	bool lastCondition; // to track if the condition became true and we might need to resize the terminal engine
+};
+
 // GUIAnimation - Used for animations
 class GUIAnimation : public GUIObject, public RenderObject
 {
-- 
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