From 135c3adc94fdb29241b8bf6b4828a68136ca4a40 Mon Sep 17 00:00:00 2001
From: Paul Gilbert
Date: Mon, 5 Nov 2018 22:13:14 -0800
Subject: GLK: In progress adding mouse cursors

---
 engines/gargoyle/events.cpp | 96 +++++++++++++++++++++++++++++++++++++++++++--
 engines/gargoyle/events.h   | 27 +++++++++++++
 2 files changed, 120 insertions(+), 3 deletions(-)

diff --git a/engines/gargoyle/events.cpp b/engines/gargoyle/events.cpp
index 40888b13ec..db5d8a68f8 100644
--- a/engines/gargoyle/events.cpp
+++ b/engines/gargoyle/events.cpp
@@ -22,14 +22,75 @@
 
 #include "gargoyle/events.h"
 #include "gargoyle/clipboard.h"
+#include "gargoyle/conf.h"
 #include "gargoyle/gargoyle.h"
 #include "gargoyle/screen.h"
 #include "gargoyle/windows.h"
+#include "graphics/cursorman.h"
 
 namespace Gargoyle {
 
+const byte ARROW[] = {
+	// byte 1: number of skipped pixels
+	// byte 2: number of plotted pixels
+	// then, pixels
+	0, 2, 0xF7, 5,
+	0, 3, 0xF7, 0xF7, 5,
+	0, 3, 0xF7, 0xF7, 5,
+	0, 4, 0xF7, 0xF7, 0xF7, 5,
+	0, 4, 0xF7, 0xF7, 0xF7, 5,
+	0, 5, 0xF7, 0xF7, 0xF7, 0xF7, 5,
+	0, 5, 0xF7, 0xF7, 0xF7, 0xF7, 5,
+	0, 6, 0xF7, 0xF7, 0xF7, 0xF7, 0xF7, 5,
+	0, 6, 0xF7, 0xF7, 0xF7, 0xF7, 0xF7, 5,
+	0, 7, 0xF7, 0xF7, 0xF7, 0xF7, 0xF7, 0xF7, 5,
+	0, 6, 0xF7, 0xF7, 0xF7, 0xF7, 0xF7, 5,
+	0, 5, 0xF7, 0xF7, 0xF7, 0xF7, 5,
+	2, 3, 0xF7, 0xF7, 5,
+	3, 3, 0xF7, 0xF7, 5,
+	3, 3, 0xF7, 0xF7, 5,
+	4, 2, 0xF7, 5
+};
+
 Events::Events() : _forceClick(false), _currentEvent(nullptr), _timeouts(false),
-	_priorFrameTime(0), _frameCounter(0) {
+		_priorFrameTime(0), _frameCounter(0), _cursorId(CURSOR_NONE) {
+	initializeCursors();
+}
+
+Events::~Events() {
+	for (int idx = 1; idx < 3; ++idx)
+		_cursors[idx].free();
+}
+
+void Events::initializeCursors() {
+	const Graphics::PixelFormat format = g_system->getScreenFormat();
+	const int WHITE = format.RGBToColor(0xff, 0xff, 0xff);
+	const int BLACK = 0;
+	const int TRANSPARENT = format.RGBToColor(0x80, 0x80, 0x80);
+
+	// Setup arrow cursor
+	Surface &arr = _cursors[CURSOR_ARROW];
+	arr.create(8, 16, g_system->getScreenFormat());
+	arr.fillRect(Common::Rect(0, 0, 8, 16), TRANSPARENT);
+
+	const byte *p = ARROW;
+	for (int y = 0; y < 16; ++y) {
+		int offset = *p++;
+		int len = *p++;
+
+		for (int x = offset; x < (offset  + len); ++x, ++p) {
+			arr.hLine(x, y, x, (*p == 0xf7) ? WHITE : BLACK);
+		}
+	}
+
+	// Setup selection cusor sized to the vertical line size
+	Surface &sel = _cursors[CURSOR_SELECTION];
+	sel.create(5, g_conf->_leading, g_system->getScreenFormat());
+	sel.fillRect(Common::Rect(0, 0, sel.w, sel.h), TRANSPARENT);
+	sel.hLine(0, 0, 4, 0);
+	sel.hLine(0, sel.h - 1, 4, 0);
+	sel.vLine(2, 1, sel.h - 1, 0);
+	sel._hotspot = Common::Point(2, sel.h - 1);
 }
 
 void Events::checkForNextFrameCounter() {
@@ -115,14 +176,25 @@ void Events::pollEvents() {
 
 		switch (event.type) {
 		case Common::EVENT_KEYDOWN:
+			setCursor(CURSOR_NONE);
 			handleKeyDown(event.kbd);
 			return;
+
+		case Common::EVENT_LBUTTONDOWN:
+		case Common::EVENT_RBUTTONDOWN:
+			// TODO
+			return;
+
 		case Common::EVENT_WHEELUP:
 		case Common::EVENT_WHEELDOWN:
+			setCursor(CURSOR_NONE);
 			handleScroll(event.type == Common::EVENT_WHEELUP);
 			return;
-		case Common::EVENT_LBUTTONDOWN:
-		case Common::EVENT_RBUTTONDOWN:
+
+		case Common::EVENT_MOUSEMOVE:
+			if (_cursorId == CURSOR_NONE)
+				setCursor(CURSOR_ARROW);
+			break;
 
 		default:
 			break;
@@ -236,4 +308,22 @@ void Events::waitForPress() {
 		e.type != Common::EVENT_MBUTTONDOWN);
 }
 
+void Events::setCursor(CursorId cursorId) {
+	if (cursorId != _cursorId) {
+		if (cursorId == CURSOR_NONE) {
+			CursorMan.showMouse(false);
+		} else {
+			if (!CursorMan.isVisible())
+				CursorMan.showMouse(true);
+
+			const Surface &s = _cursors[cursorId];
+			const int TRANSPARENT = s.format.RGBToColor(0x80, 0x80, 0x80);
+
+			CursorMan.replaceCursor(s.getPixels(), s.w, s.h, s._hotspot.x, s._hotspot.y, TRANSPARENT, true, &s.format);
+		}
+
+		_cursorId = cursorId;
+	}
+}
+
 } // End of namespace Gargoyle
diff --git a/engines/gargoyle/events.h b/engines/gargoyle/events.h
index 1347200d4a..5406e3ccb6 100644
--- a/engines/gargoyle/events.h
+++ b/engines/gargoyle/events.h
@@ -24,6 +24,7 @@
 #define GARGOYLE_EVENTS_H
 
 #include "common/events.h"
+#include "graphics/surface.h"
 #include "gargoyle/utils.h"
 
 namespace Gargoyle {
@@ -93,6 +94,12 @@ enum Keycode {
 	keycode_MAXVAL = 28U
 };
 
+enum CursorId {
+	CURSOR_NONE = 0,
+	CURSOR_ARROW = 1,
+	CURSOR_SELECTION = 2
+};
+
 /**
  * Event structure
  */
@@ -146,6 +153,9 @@ public:
  * Events manager
  */
 class Events {
+	struct Surface : public Graphics::Surface {
+		Common::Point _hotspot;
+	};
 private:
 	EventQueue _eventsPolled;		///< User generated events
 	EventQueue _eventsLogged;		///< Custom events generated by game code
@@ -154,7 +164,14 @@ private:
 	uint32 _priorFrameTime;			///< Time of prior game frame
 	uint32 _frameCounter;			///< Frame counter
 	bool _redraw;					///< Screen needed redrawing
+	CursorId _cursorId;				///< Current cursor Id
+	Surface _cursors[3];			///< Cursor pixel data
 private:
+	/**
+	 * Initialize the cursor graphics
+	 */
+	void initializeCursors();
+
 	/**
 	 * Checks for whether it's time for the next game frame
 	 */
@@ -202,6 +219,11 @@ public:
 	 */
 	Events();
 
+	/**
+	 * Destructor
+	 */
+	~Events();
+
 	/**
 	  * Get any pending event
 	  */
@@ -231,6 +253,11 @@ public:
 	 * Flags the screen for redrawing
 	 */
 	void redraw() { _redraw = true; }
+
+	/**
+	 * Sets the current cursor
+	 */
+	void setCursor(CursorId cursorId);
 };
 
 } // End of namespace Gargoyle
-- 
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