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osd_message_queue.cpp
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112 lines (92 loc) · 2.96 KB
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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 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/osd_message_queue.h"
#include "common/system.h"
#include "graphics/surface.h"
namespace Common {
DECLARE_SINGLETON(OSDMessageQueue);
OSDMessageQueue::OSDQueueEntry::OSDQueueEntry(const Common::U32String &msg)
: _text(new Common::U32String(msg)), _image(nullptr) {}
OSDMessageQueue::OSDQueueEntry::OSDQueueEntry(const Graphics::Surface *surface)
: _text(nullptr), _image(nullptr) {
if (surface) {
_image = new Graphics::Surface();
_image->copyFrom(*surface);
}
}
OSDMessageQueue::OSDQueueEntry::~OSDQueueEntry() {
if (_text)
delete _text;
if (_image) {
_image->free();
delete _image;
}
}
OSDMessageQueue::OSDMessageQueue() : _lastUpdate(0), _iconWasShown(false) {
}
OSDMessageQueue::~OSDMessageQueue() {
g_system->getEventManager()->getEventDispatcher()->unregisterSource(this);
_mutex.lock();
while (!_messages.empty()) {
OSDQueueEntry *entry = _messages.pop();
delete entry;
}
_mutex.unlock();
}
void OSDMessageQueue::registerEventSource() {
g_system->getEventManager()->getEventDispatcher()->registerSource(this, false);
}
void OSDMessageQueue::addMessage(const Common::U32String &msg) {
_mutex.lock();
_messages.push(new OSDQueueEntry(msg));
_mutex.unlock();
}
void OSDMessageQueue::addImage(const Graphics::Surface *surface) {
_mutex.lock();
_messages.push(new OSDQueueEntry(surface));
_mutex.unlock();
}
bool OSDMessageQueue::pollEvent(Common::Event &event) {
_mutex.lock();
uint t = g_system->getMillis(true);
if (!_messages.empty()) {
if (t - _lastUpdate >= kMinimumDelay) {
_lastUpdate = t;
OSDQueueEntry *entry = _messages.pop();
if (entry->_image) {
g_system->displayActivityIconOnOSD(entry->_image);
_iconWasShown = true;
} else if (entry->_text) {
g_system->displayMessageOnOSD(*(entry->_text));
}
delete entry;
}
} else if (t - _lastUpdate >= kIconCleanupDelay) {
// If there are no messages, but the last message was an icon that was shown, clear it after a delay
if (_iconWasShown) {
g_system->displayActivityIconOnOSD(nullptr);
_iconWasShown = false;
}
}
_mutex.unlock();
return false;
}
} // End of namespace Common