126 lines
3.5 KiB
C++
126 lines
3.5 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "ui/controls/emoji_button.h"
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#include "ui/effects/radial_animation.h"
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#include "ui/effects/ripple_animation.h"
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#include "ui/painter.h"
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#include "styles/style_chat_helpers.h"
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namespace Ui {
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EmojiButton::EmojiButton(QWidget *parent, const style::EmojiButton &st)
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: RippleButton(parent, st.inner.ripple)
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, _st(st) {
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resize(_st.inner.width, _st.inner.height);
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setCursor(style::cur_pointer);
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}
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void EmojiButton::paintEvent(QPaintEvent *e) {
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auto p = QPainter(this);
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p.fillRect(e->rect(), _st.bg);
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const auto &st = _st.inner;
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paintRipple(p, st.rippleAreaPosition.x(), st.rippleAreaPosition.y(), _rippleOverride ? &(*_rippleOverride)->c : nullptr);
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const auto over = isOver();
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const auto loadingState = _loading
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? _loading->computeState()
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: RadialState{ 0., 0, RadialState::kFull };
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const auto icon = _iconOverride ? _iconOverride : &(over ? st.iconOver : st.icon);
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auto position = st.iconPosition;
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if (position.x() < 0) {
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position.setX((width() - icon->width()) / 2);
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}
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if (position.y() < 0) {
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position.setY((height() - icon->height()) / 2);
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}
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const auto skipx = icon->width() / 4;
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const auto skipy = icon->height() / 4;
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const auto inner = QRect(
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position + QPoint(skipx, skipy),
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QSize(icon->width() - 2 * skipx, icon->height() - 2 * skipy));
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if (loadingState.shown < 1.) {
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p.setOpacity(1. - loadingState.shown);
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icon->paint(p, position, width());
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p.setOpacity(1.);
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}
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const auto color = (_colorOverride
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? *_colorOverride
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: (over ? _st.lineFgOver : _st.lineFg));
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const auto line = style::ConvertScaleExact(st::historyEmojiCircleLine);
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if (anim::Disabled() && _loading && _loading->animating()) {
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anim::DrawStaticLoading(p, inner, line, color);
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} else {
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auto pen = color->p;
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pen.setWidthF(line);
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pen.setCapStyle(Qt::RoundCap);
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p.setPen(pen);
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p.setBrush(Qt::NoBrush);
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PainterHighQualityEnabler hq(p);
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if (loadingState.arcLength < RadialState::kFull) {
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p.drawArc(inner, loadingState.arcFrom, loadingState.arcLength);
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} else {
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p.drawEllipse(inner);
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}
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}
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}
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void EmojiButton::loadingAnimationCallback() {
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if (!anim::Disabled()) {
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update();
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}
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}
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void EmojiButton::setLoading(bool loading) {
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if (loading && !_loading) {
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_loading = std::make_unique<InfiniteRadialAnimation>(
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[=] { loadingAnimationCallback(); },
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st::defaultInfiniteRadialAnimation);
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}
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if (loading) {
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_loading->start();
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update();
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} else if (_loading) {
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_loading->stop();
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update();
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}
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}
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void EmojiButton::setColorOverrides(const style::icon *iconOverride, const style::color *colorOverride, const style::color *rippleOverride) {
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_iconOverride = iconOverride;
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_colorOverride = colorOverride;
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_rippleOverride = rippleOverride;
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update();
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}
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void EmojiButton::onStateChanged(State was, StateChangeSource source) {
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RippleButton::onStateChanged(was, source);
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auto wasOver = static_cast<bool>(was & StateFlag::Over);
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if (isOver() != wasOver) {
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update();
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}
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}
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QPoint EmojiButton::prepareRippleStartPosition() const {
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if (!_st.inner.rippleAreaSize) {
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return DisabledRippleStartPosition();
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}
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return mapFromGlobal(QCursor::pos()) - _st.inner.rippleAreaPosition;
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}
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QImage EmojiButton::prepareRippleMask() const {
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const auto size = _st.inner.rippleAreaSize;
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return RippleAnimation::EllipseMask(QSize(size, size));
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}
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} // namespace Ui
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