tdesktop/Telegram/SourceFiles/profile/profile_cover_drop_area.cpp

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/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "profile/profile_cover_drop_area.h"
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#include "ui/ui_utility.h"
#include "styles/style_profile.h"
namespace Profile {
CoverDropArea::CoverDropArea(QWidget *parent, const QString &title, const QString &subtitle) : TWidget(parent)
, _title(title)
, _subtitle(subtitle)
, _titleWidth(st::profileDropAreaTitleFont->width(_title))
, _subtitleWidth(st::profileDropAreaSubtitleFont->width(_subtitle)) {
}
void CoverDropArea::showAnimated() {
show();
_hiding = false;
setupAnimation();
}
void CoverDropArea::hideAnimated(HideFinishCallback &&callback) {
_hideFinishCallback = std::move(callback);
_hiding = true;
setupAnimation();
}
void CoverDropArea::paintEvent(QPaintEvent *e) {
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auto p = QPainter(this);
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if (_a_appearance.animating()) {
p.setOpacity(_a_appearance.value(_hiding ? 0. : 1.));
p.drawPixmap(0, 0, _cache);
return;
}
if (!_cache.isNull()) {
_cache = QPixmap();
if (_hiding) {
hide();
if (_hideFinishCallback) {
_hideFinishCallback(this);
}
return;
}
}
p.fillRect(e->rect(), st::profileDropAreaBg);
if (width() < st::profileDropAreaPadding.left() + st::profileDropAreaPadding.right()) return;
if (height() < st::profileDropAreaPadding.top() + st::profileDropAreaPadding.bottom()) return;
auto border = st::profileDropAreaBorderWidth;
auto &borderFg = st::profileDropAreaBorderFg;
auto inner = rect().marginsRemoved(st::profileDropAreaPadding);
p.fillRect(inner.x(), inner.y(), inner.width(), border, borderFg);
p.fillRect(inner.x(), inner.y() + inner.height() - border, inner.width(), border, borderFg);
p.fillRect(inner.x(), inner.y() + border, border, inner.height() - 2 * border, borderFg);
p.fillRect(inner.x() + inner.width() - border, inner.y() + border, border, inner.height() - 2 * border, borderFg);
int titleLeft = inner.x() + (inner.width() - _titleWidth) / 2;
int titleTop = inner.y() + st::profileDropAreaTitleTop + st::profileDropAreaTitleFont->ascent;
p.setFont(st::profileDropAreaTitleFont);
p.setPen(st::profileDropAreaFg);
p.drawText(titleLeft, titleTop, _title);
int subtitleLeft = inner.x() + (inner.width() - _subtitleWidth) / 2;
int subtitleTop = inner.y() + st::profileDropAreaSubtitleTop + st::profileDropAreaSubtitleFont->ascent;
p.setFont(st::profileDropAreaSubtitleFont);
p.setPen(st::profileDropAreaFg);
p.drawText(subtitleLeft, subtitleTop, _subtitle);
}
void CoverDropArea::setupAnimation() {
if (_cache.isNull()) {
_cache = Ui::GrabWidget(this);
}
auto from = _hiding ? 1. : 0., to = _hiding ? 0. : 1.;
_a_appearance.start(
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[=] { update(); },
from,
to,
st::profileDropAreaDuration);
}
} // namespace Profile