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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.
*
* 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 "backends/cloud/cloudicon.h"
#include "common/memstream.h"
#include "common/system.h"
#include "image/png.h"
namespace Cloud {
const float CloudIcon::ALPHA_SPEED = 0.0005;
const float CloudIcon::ALPHA_MAX = 1;
const float CloudIcon::ALPHA_MIN = 0.6;
CloudIcon::CloudIcon() {
initIcons();
hide();
_lastUpdateTime = g_system->getMillis();
}
CloudIcon::~CloudIcon() {
_icon.free();
_disabledIcon.free();
_alphaIcon.free();
}
void CloudIcon::show(CloudIcon::Type icon, int duration) {
if (_type == icon) {
return; // Nothing to do
}
if (icon != kNone) {
_state = kShown;
_type = icon;
if (duration) {
_hideTime = g_system->getMillis() + duration;
} else {
_hideTime = 0;
}
} else {
_state = kGoingToHide;
}
}
void CloudIcon::hide() {
_state = kHidden;
_type = kNone;
_hideTime = 0;
_currentAlpha = 0;
_alphaRising = true;
}
CloudIcon::Type CloudIcon::getShownType() const {
return _type;
}
bool CloudIcon::needsUpdate() const {
uint32 delaySinceLastUpdate = g_system->getMillis() - _lastUpdateTime;
return delaySinceLastUpdate >= UPDATE_DELAY_MIN_MILLIS;
}
void CloudIcon::update() {
uint32 currentTime = g_system->getMillis();
uint32 delaySinceLastUpdate = currentTime - _lastUpdateTime;
_lastUpdateTime = currentTime;
switch (_state) {
case kHidden:
return; // Nothing to do
case kShown:
if (_alphaRising) {
if (_currentAlpha < ALPHA_MIN)
_currentAlpha += 5 * ALPHA_SPEED * delaySinceLastUpdate;
else
_currentAlpha += ALPHA_SPEED * delaySinceLastUpdate;
if (_currentAlpha > ALPHA_MAX) {
_currentAlpha = ALPHA_MAX;
_alphaRising = false;
}
} else {
_currentAlpha -= ALPHA_SPEED * delaySinceLastUpdate;
if (_currentAlpha < ALPHA_MIN) {
_currentAlpha = ALPHA_MIN;
_alphaRising = true;
}
}
if (_hideTime != 0 && _hideTime <= currentTime) {
_hideTime = 0;
_state = kGoingToHide;
}
break;
case kGoingToHide:
_currentAlpha -= 5 * ALPHA_SPEED * delaySinceLastUpdate;
if (_currentAlpha <= 0) {
hide();
}
break;
}
if (!_icon.getPixels() || !_disabledIcon.getPixels()) {
// Loading the icons failed. Don't try to draw them.
return;
}
if (_state != kHidden) {
makeAlphaIcon((_type == kDisabled ? _disabledIcon : _icon), _currentAlpha);
g_system->displayActivityIconOnOSD(&_alphaIcon);
} else {
g_system->displayActivityIconOnOSD(nullptr);
}
}
#include "backends/cloud/cloudicon_data.h"
#include "backends/cloud/cloudicon_disabled_data.h"
void CloudIcon::initIcons() {
loadIcon(_icon, cloudicon_data, ARRAYSIZE(cloudicon_data));
loadIcon(_disabledIcon, cloudicon_disabled_data, ARRAYSIZE(cloudicon_disabled_data));
}
void CloudIcon::loadIcon(Graphics::Surface &icon, byte *data, uint32 size) {
Image::PNGDecoder decoder;
Common::MemoryReadStream stream(data, size);
if (!decoder.loadStream(stream)) {
warning("CloudIcon::loadIcon: error decoding PNG");
return;
}
const Graphics::Surface *s = decoder.getSurface();
icon.copyFrom(*s);
}
void CloudIcon::makeAlphaIcon(const Graphics::Surface &icon, float alpha) {
_alphaIcon.copyFrom(icon);
byte *pixels = (byte *)_alphaIcon.getPixels();
for (int y = 0; y < _alphaIcon.h; y++) {
byte *row = pixels + y * _alphaIcon.pitch;
for (int x = 0; x < _alphaIcon.w; x++) {
uint32 srcColor;
if (_alphaIcon.format.bytesPerPixel == 2)
srcColor = READ_UINT16(row);
else if (_alphaIcon.format.bytesPerPixel == 3)
srcColor = READ_UINT24(row);
else
srcColor = READ_UINT32(row);
// Update color's alpha
byte r, g, b, a;
_alphaIcon.format.colorToARGB(srcColor, a, r, g, b);
a = (byte)(a * alpha);
uint32 color = _alphaIcon.format.ARGBToColor(a, r, g, b);
if (_alphaIcon.format.bytesPerPixel == 2)
*((uint16 *)row) = color;
else
*((uint32 *)row) = color;
row += _alphaIcon.format.bytesPerPixel;
}
}
}
} // End of namespace Cloud
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