156 lines
4.4 KiB
C++
156 lines
4.4 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
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*/
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#include "stdafx.h"
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#include "history/history_drag_area.h"
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#include "styles/style_stickers.h"
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#include "styles/style_boxes.h"
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#include "boxes/confirmbox.h"
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#include "boxes/stickersetbox.h"
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#include "inline_bots/inline_bot_result.h"
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#include "inline_bots/inline_bot_layout_item.h"
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#include "dialogs/dialogs_layout.h"
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#include "historywidget.h"
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#include "localstorage.h"
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#include "lang.h"
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#include "mainwindow.h"
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#include "apiwrap.h"
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#include "mainwidget.h"
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DragArea::DragArea(QWidget *parent) : TWidget(parent)
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, _hiding(false)
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, _in(false)
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, _shadow(st::boxShadow) {
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setMouseTracking(true);
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setAcceptDrops(true);
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}
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void DragArea::mouseMoveEvent(QMouseEvent *e) {
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if (_hiding) return;
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auto in = QRect(st::dragPadding.left(), st::dragPadding.top(), width() - st::dragPadding.left() - st::dragPadding.right(), height() - st::dragPadding.top() - st::dragPadding.bottom()).contains(e->pos());
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setIn(in);
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}
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void DragArea::dragMoveEvent(QDragMoveEvent *e) {
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QRect r(st::dragPadding.left(), st::dragPadding.top(), width() - st::dragPadding.left() - st::dragPadding.right(), height() - st::dragPadding.top() - st::dragPadding.bottom());
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setIn(r.contains(e->pos()));
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e->setDropAction(_in ? Qt::CopyAction : Qt::IgnoreAction);
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e->accept();
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}
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void DragArea::setIn(bool in) {
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if (_in != in) {
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_in = in;
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_a_in.start([this] { update(); }, _in ? 0. : 1., _in ? 1. : 0., st::defaultDropdownDuration);
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}
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}
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void DragArea::setText(const QString &text, const QString &subtext) {
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_text = text;
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_subtext = subtext;
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update();
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}
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void DragArea::paintEvent(QPaintEvent *e) {
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Painter p(this);
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auto ms = getms();
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auto opacity = _a_opacity.current(ms, _hiding ? 0. : 1.);
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if (!_a_opacity.animating() && _hiding) {
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return;
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}
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p.setOpacity(opacity);
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QRect r(st::dragPadding.left(), st::dragPadding.top(), width() - st::dragPadding.left() - st::dragPadding.right(), height() - st::dragPadding.top() - st::dragPadding.bottom());
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// draw shadow
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_shadow.paint(p, r, st::boxShadowShift);
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p.fillRect(r, st::dragBg);
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p.setPen(anim::pen(st::dragColor, st::dragDropColor, _a_in.current(ms, _in ? 1. : 0.)));
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p.setFont(st::dragFont);
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p.drawText(QRect(0, (height() - st::dragHeight) / 2, width(), st::dragFont->height), _text, QTextOption(style::al_top));
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p.setFont(st::dragSubfont);
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p.drawText(QRect(0, (height() + st::dragHeight) / 2 - st::dragSubfont->height, width(), st::dragSubfont->height * 2), _subtext, QTextOption(style::al_top));
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}
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void DragArea::dragEnterEvent(QDragEnterEvent *e) {
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static_cast<HistoryWidget*>(parentWidget())->dragEnterEvent(e);
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e->setDropAction(Qt::IgnoreAction);
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e->accept();
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}
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void DragArea::dragLeaveEvent(QDragLeaveEvent *e) {
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static_cast<HistoryWidget*>(parentWidget())->dragLeaveEvent(e);
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setIn(false);
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}
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void DragArea::dropEvent(QDropEvent *e) {
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static_cast<HistoryWidget*>(parentWidget())->dropEvent(e);
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if (e->isAccepted() && _droppedCallback) {
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_droppedCallback(e->mimeData());
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}
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}
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void DragArea::otherEnter() {
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showStart();
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}
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void DragArea::otherLeave() {
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hideStart();
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}
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void DragArea::hideFast() {
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_a_opacity.finish();
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hide();
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}
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void DragArea::hideStart() {
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_hiding = true;
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setIn(false);
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_a_opacity.start([this] { opacityAnimationCallback(); }, 1., 0., st::defaultDropdownDuration);
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}
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void DragArea::hideFinish() {
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hide();
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_in = false;
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_a_in.finish();
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}
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void DragArea::showStart() {
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_hiding = false;
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show();
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_a_opacity.start([this] { opacityAnimationCallback(); }, 0., 1., st::defaultDropdownDuration);
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}
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void DragArea::opacityAnimationCallback() {
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update();
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if (!_a_opacity.animating()) {
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if (_hiding) {
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hideFinish();
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}
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}
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}
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