tdesktop/Telegram/SourceFiles/layerwidget.cpp

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/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org
Telegram Desktop 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.
It 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.
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In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2015 John Preston, https://desktop.telegram.org
*/
#include "stdafx.h"
#include "lang.h"
#include "layerwidget.h"
#include "application.h"
#include "window.h"
#include "mainwidget.h"
#include "gui/filedialog.h"
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BackgroundWidget::BackgroundWidget(QWidget *parent, LayeredWidget *w) : QWidget(parent), w(w),
aBackground(0), aBackgroundFunc(anim::easeOutCirc), hiding(false), shadow(st::boxShadow) {
w->setParent(this);
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if (App::app()) App::app()->mtpPause();
setGeometry(0, 0, App::wnd()->width(), App::wnd()->height());
aBackground.start(1);
anim::start(this);
show();
connect(w, SIGNAL(closed()), this, SLOT(onInnerClose()));
connect(w, SIGNAL(resized()), this, SLOT(update()));
connect(w, SIGNAL(destroyed(QObject*)), this, SLOT(boxDestroyed(QObject*)));
w->setFocus();
}
void BackgroundWidget::showFast() {
animStep(st::layerSlideDuration + 1);
update();
}
void BackgroundWidget::paintEvent(QPaintEvent *e) {
if (!w) return;
bool trivial = (rect() == e->rect());
QPainter p(this);
if (!trivial) {
p.setClipRect(e->rect());
}
p.setOpacity(st::layerAlpha * aBackground.current());
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p.fillRect(rect(), st::layerBg->b);
p.setOpacity(aBackground.current());
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shadow.paint(p, w->geometry(), st::boxShadowShift);
}
void BackgroundWidget::keyPressEvent(QKeyEvent *e) {
if (e->key() == Qt::Key_Escape) {
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onClose();
}
}
void BackgroundWidget::mousePressEvent(QMouseEvent *e) {
onClose();
}
void BackgroundWidget::onClose() {
startHide();
}
bool BackgroundWidget::onInnerClose() {
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if (_hidden.isEmpty()) {
onClose();
return true;
}
w->deleteLater();
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w = _hidden.back();
_hidden.pop_back();
w->show();
resizeEvent(0);
w->animStep(1);
update();
return false;
}
void BackgroundWidget::startHide() {
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if (hiding) return;
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if (App::app()) App::app()->mtpPause();
hiding = true;
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if (App::wnd()) App::wnd()->setInnerFocus();
aBackground.start(0);
anim::start(this);
w->startHide();
}
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bool BackgroundWidget::canSetFocus() const {
return w && !hiding;
}
void BackgroundWidget::setInnerFocus() {
if (w) {
w->setInnerFocus();
}
}
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bool BackgroundWidget::contentOverlapped(const QRect &globalRect) {
if (isHidden()) return false;
return w && w->overlaps(globalRect);
}
void BackgroundWidget::resizeEvent(QResizeEvent *e) {
w->parentResized();
}
void BackgroundWidget::updateWideMode() {
}
void BackgroundWidget::replaceInner(LayeredWidget *n) {
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_hidden.push_back(w);
w->hide();
w = n;
w->setParent(this);
connect(w, SIGNAL(closed()), this, SLOT(onInnerClose()));
connect(w, SIGNAL(resized()), this, SLOT(update()));
connect(w, SIGNAL(destroyed(QObject*)), this, SLOT(boxDestroyed(QObject*)));
w->show();
resizeEvent(0);
w->animStep(1);
update();
}
void BackgroundWidget::showLayerLast(LayeredWidget *n) {
_hidden.push_front(n);
n->setParent(this);
connect(n, SIGNAL(closed()), this, SLOT(onInnerClose()));
connect(n, SIGNAL(resized()), this, SLOT(update()));
connect(n, SIGNAL(destroyed(QObject*)), this, SLOT(boxDestroyed(QObject*)));
n->parentResized();
n->animStep(1);
n->hide();
update();
}
bool BackgroundWidget::animStep(float64 ms) {
float64 dt = ms / (hiding ? st::layerHideDuration : st::layerSlideDuration);
w->animStep(dt);
bool res = true;
if (dt >= 1) {
aBackground.finish();
if (hiding) {
App::wnd()->layerFinishedHide(this);
}
anim::stop(this);
res = false;
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if (App::app()) App::app()->mtpUnpause();
} else {
aBackground.update(dt, aBackgroundFunc);
}
update();
return res;
}
void BackgroundWidget::boxDestroyed(QObject *obj) {
if (obj == w) {
if (App::wnd()) App::wnd()->layerFinishedHide(this);
w = 0;
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} else {
int32 index = _hidden.indexOf(static_cast<LayeredWidget*>(obj));
if (index >= 0) {
_hidden.removeAt(index);
}
}
}
BackgroundWidget::~BackgroundWidget() {
if (App::wnd()) App::wnd()->noBox(this);
w->deleteLater();
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for (HiddenLayers::const_iterator i = _hidden.cbegin(), e = _hidden.cend(); i != e; ++i) {
(*i)->deleteLater();
}
}