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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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "common/macresman.h"
#include "common/stream.h"
#include "pegasus/neighborhood/norad/alpha/panorama.h"
namespace Pegasus {
Panorama::Panorama() : _panoramaMovie(kNoDisplayElement) {
blankFields();
}
Panorama::~Panorama() {
releasePanorama();
}
void Panorama::blankFields() {
_viewBounds = Common::Rect();
_drawBounds = Common::Rect();
_mask = 0;
_panoramaWidth = 0;
_panoramaHeight = 0;
_stripWidth = 0;
_stripLeft = -1;
_stripRight = -1;
}
void Panorama::releasePanorama() {
if (_panoramaMovie.isMovieValid()) {
_panoramaMovie.releaseMovie();
_panoramaWorld.deallocateSurface();
blankFields();
}
}
static const uint32 kPanoramaResType = MKTAG('P', 'a', 'n', 'I'); // Panorama Information.
static const uint16 kPanoramaResID = 128;
void Panorama::initFromMovieFile(const Common::String &fileName) {
// First, we need the resource fork for other reasons -- PanI resource
Common::MacResManager *resFork = new Common::MacResManager();
if (!resFork->open(fileName) || !resFork->hasResFork())
error("Could not open the resource fork of '%s'", fileName.c_str());
Common::SeekableReadStream *resource = resFork->getResource(kPanoramaResType, kPanoramaResID);
if (!resource)
error("No panorama information in the resource fork of '%s'", fileName.c_str());
_panoramaWidth = resource->readUint16BE();
_panoramaHeight = resource->readUint16BE();
_stripWidth = resource->readUint16BE();
delete resource;
delete resFork;
// Now we open the movie like normal
_panoramaMovie.initFromMovieFile(fileName);
}
void Panorama::setMask(Surface *mask) {
_mask = mask;
}
// If the panorama is not open, do nothing and return.
// Otherwise, set up the view bounds.
void Panorama::setViewBounds(const Common::Rect &newView) {
if (!isPanoramaOpen())
return;
if (newView.isEmpty())
return;
Common::Rect r = newView;
if (r.width() > _panoramaWidth) {
r.left = 0;
r.right = _panoramaWidth;
} else {
if (r.right > _panoramaWidth)
r.translate(_panoramaWidth - r.right, 0);
if (r.left < 0)
r.translate(-r.left, 0);
}
if (r.height() > _panoramaHeight) {
r.top = 0;
r.bottom = _panoramaHeight;
} else {
if (r.bottom > _panoramaHeight)
r.translate(0, _panoramaHeight - r.bottom);
if (r.top < 0)
r.translate(0, -r.top);
}
if (_viewBounds != r) {
CoordType stripLeft = 0;
if (r.width() != _viewBounds.width() || !_panoramaWorld.isSurfaceValid()) {
_panoramaWorld.deallocateSurface();
makeNewSurface(r);
} else {
CoordType stripRight;
calcStripRange(r, stripLeft, stripRight);
loadStrips(stripLeft, stripRight);
}
_viewBounds = r;
_drawBounds = r;
_drawBounds.translate(-stripLeft * _stripWidth, 0);
}
}
void Panorama::getViewBounds(Common::Rect &r) const {
r = _viewBounds;
}
void Panorama::getPanoramaBounds(Common::Rect &r) const {
r = Common::Rect(0, 0, _panoramaWidth, _panoramaHeight);
}
void Panorama::drawPanorama(const Common::Rect &destRect) {
if (_panoramaWorld.isSurfaceValid()) {
if (_mask)
_panoramaWorld.copyToCurrentPortMasked(_drawBounds, destRect, _mask);
else
_panoramaWorld.copyToCurrentPortTransparent(_drawBounds, destRect);
}
}
// Make a new Surface big enough to show r, which is assumed to be a valid view bounds.
// Assumptions:
// r is a valid view bounds.
// _panoramaWorld is not allocated.
// _panoramaHeight, _stripWidth is correct.
// _panoramaMovie is allocated.
void Panorama::makeNewSurface(const Common::Rect& view) {
CoordType stripLeft, stripRight;
calcStripRange(view, stripLeft, stripRight);
Common::Rect r(0, 0, (stripRight - stripLeft + 1) * _stripWidth, _panoramaHeight);
_panoramaWorld.allocateSurface(r);
_panoramaMovie.shareSurface(&_panoramaWorld);
loadStrips(stripLeft, stripRight);
}
// Assumes view is not empty.
void Panorama::calcStripRange(const Common::Rect &view, CoordType &stripLeft, CoordType &stripRight) {
stripLeft = view.left / _stripWidth;
stripRight = (view.left - view.left % _stripWidth + _stripWidth - 1 + view.width()) / _stripWidth;
}
// Load in all needed strips to put range (stripLeft, stripRight) into the
// panorama's Surface. Try to optimize by saving any pixels already in the Surface.
// Assumptions:
// Surface is allocated and is big enough for maximum range of
// stripLeft and stripRight
void Panorama::loadStrips(CoordType stripLeft, CoordType stripRight) {
if (_stripLeft == -1) {
// Surface has just been allocated.
// Load in all strips.
for (CoordType i = stripLeft; i <= stripRight; i++)
loadOneStrip(i, stripLeft);
_stripLeft = stripLeft;
_stripRight = stripRight;
} else if (stripLeft != _stripLeft) {
CoordType overlapLeft = MAX(stripLeft, _stripLeft);
CoordType overlapRight = MIN(stripRight, _stripRight);
if (overlapLeft <= overlapRight) {
Common::Rect r1((overlapLeft - _stripLeft) * _stripWidth, 0,
(overlapRight - _stripLeft + 1) * _stripWidth, _panoramaHeight);
Common::Rect r2 = r1;
if (stripLeft < _stripLeft) {
Common::Rect bounds;
_panoramaWorld.getSurfaceBounds(bounds);
_panoramaWorld.getSurface()->move(bounds.right - r1.right, 0, _panoramaHeight);
for (CoordType i = stripLeft; i < _stripLeft; i++)
loadOneStrip(i, stripLeft);
} else {
_panoramaWorld.getSurface()->move(-r1.left, 0, _panoramaHeight);
for (CoordType i = _stripRight + 1; i <= stripRight; i++)
loadOneStrip(i, stripLeft);
}
} else {
// No overlap.
// Load everything.
for (CoordType i = stripLeft; i <= stripRight; i++)
loadOneStrip(i, stripLeft);
}
_stripLeft = stripLeft;
_stripRight = stripRight;
} else if (stripRight > _stripRight) {
// Need to add one or more strips.
for (CoordType i = _stripRight + 1; i <= stripRight; i++)
loadOneStrip(i, _stripLeft);
_stripRight = stripRight;
} else if (stripRight < _stripRight) {
// Need to chop off one strip.
_stripRight = stripRight;
}
}
void Panorama::loadOneStrip(CoordType stripToLoad, CoordType leftStrip) {
_panoramaMovie.moveMovieBoxTo((stripToLoad - leftStrip) * _stripWidth, 0);
_panoramaMovie.setTime(stripToLoad, 1);
_panoramaMovie.redrawMovieWorld();
}
} // End of namespace Pegasus
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