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engines/pegasus/cursor.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * Additional copyright for this file:
+ * Copyright (C) 1995-1997 Presto Studios, Inc.
+ *
+ * This program 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "common/events.h"
+#include "common/stream.h"
+#include "common/system.h"
+#include "graphics/cursorman.h"
+#include "graphics/surface.h"
+#include "image/cicn.h"
+#include "image/pict.h"
+
+#include "pegasus/cursor.h"
+#include "pegasus/graphics.h"
+#include "pegasus/pegasus.h"
+
+namespace Pegasus {
+
+Cursor::Cursor() {
+	_cursorObscured = false;
+	_index = -1;
+	startIdling();
+}
+
+Cursor::~Cursor() {
+	for (uint32 i = 0; i < _info.size(); i++) {
+		if (_info[i].surface) {
+			_info[i].surface->free();
+			delete _info[i].surface;
+		}
+		delete[] _info[i].palette;
+	}
+
+	stopIdling();
+}
+
+void Cursor::addCursorFrames(uint16 id) {
+	Common::SeekableReadStream *cursStream = g_vm->_resFork->getResource(MKTAG('C', 'u', 'r', 's'), id);
+	if (!cursStream)
+		error("Could not load cursor frames set %d", id);
+
+	uint16 frameCount = cursStream->readUint16BE();
+	for (uint16 i = 0; i < frameCount; i++) {
+		CursorInfo info;
+		info.tag = cursStream->readUint16BE();
+		info.hotspot.x = cursStream->readUint16BE();
+		info.hotspot.y = cursStream->readUint16BE();
+		info.surface = nullptr;
+		info.palette = nullptr;
+		info.colorCount = 0;
+		_info.push_back(info);
+	}
+
+	delete cursStream;
+
+	setCurrentFrameIndex(0);
+}
+
+void Cursor::setCurrentFrameIndex(int32 index) {
+	if (_index != index) {
+		_index = index;
+		if (index != -1) {
+			loadCursorImage(_info[index]);
+
+			if (_info[index].surface->format.bytesPerPixel == 1) {
+				CursorMan.replaceCursorPalette(_info[index].palette, 0, _info[index].colorCount);
+				CursorMan.replaceCursor(*_info[index].surface, _info[index].hotspot.x, _info[index].hotspot.y, 0);
+			} else {
+				CursorMan.replaceCursor(*_info[index].surface, _info[index].hotspot.x, _info[index].hotspot.y, _info[index].surface->format.RGBToColor(0xFF, 0xFF, 0xFF), false);
+			}
+		}
+	}
+}
+
+int32 Cursor::getCurrentFrameIndex() const {
+	return _index;
+}
+
+void Cursor::show() {
+	if (!isVisible())
+		CursorMan.showMouse(true);
+
+	_cursorObscured = false;
+}
+
+void Cursor::hide() {
+	CursorMan.showMouse(false);
+	setCurrentFrameIndex(0);
+}
+
+void Cursor::hideUntilMoved() {
+	if (!_cursorObscured) {
+		hide();
+		_cursorObscured = true;
+	}
+}
+
+void Cursor::useIdleTime() {
+	if (g_system->getEventManager()->getMousePos() != _cursorLocation) {
+		_cursorLocation = g_system->getEventManager()->getMousePos();
+		if (_index != -1 && _cursorObscured)
+			show();
+	}
+}
+
+void Cursor::getCursorLocation(Common::Point &pt) const {
+	pt = _cursorLocation;
+}
+
+bool Cursor::isVisible() {
+	return CursorMan.isVisible();
+}
+
+void Cursor::loadCursorImage(CursorInfo &cursorInfo) {
+	if (cursorInfo.surface)
+		return;
+
+	if (g_vm->isDVD()) {
+		// The DVD version has some higher color PICT images for its cursors
+		Common::SeekableReadStream *pictStream = g_vm->_resFork->getResource(MKTAG('P', 'I', 'C', 'T'), cursorInfo.tag + 1000);
+
+		if (pictStream) {
+			Image::PICTDecoder pict;
+			if (!pict.loadStream(*pictStream))
+				error("Failed to decode cursor PICT %d", cursorInfo.tag + 1000);
+
+			cursorInfo.surface = pict.getSurface()->convertTo(g_system->getScreenFormat());
+			delete pictStream;
+			return;
+		}
+	}
+
+	cursorInfo.surface = new Graphics::Surface();
+
+	// The CD version uses (only) lower color cicn images for its cursors
+	Common::SeekableReadStream *cicnStream = g_vm->_resFork->getResource(MKTAG('c', 'i', 'c', 'n'), cursorInfo.tag);
+
+	if (cicnStream) {
+		Image::CicnDecoder cicn;
+		if (!cicn.loadStream(*cicnStream))
+			error("Failed to decode cursor cicn %d", cursorInfo.tag);
+
+		cursorInfo.surface = cicn.getSurface()->convertTo(g_system->getScreenFormat(), cicn.getPalette().data(), cicn.getPalette().size());
+		delete cicnStream;
+		return;
+	}
+
+	error("Failed to find color icon %d", cursorInfo.tag);
+}
+
+} // End of namespace Pegasus