806 lines
24 KiB
C++
806 lines
24 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 "ui/scrollarea.h"
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// flick scroll taken from http://qt-project.org/doc/qt-4.8/demos-embedded-anomaly-src-flickcharm-cpp.html
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ScrollShadow::ScrollShadow(ScrollArea *parent, const style::flatScroll *st) : QWidget(parent), _st(st) {
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setVisible(false);
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}
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void ScrollShadow::paintEvent(QPaintEvent *e) {
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QPainter p(this);
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p.fillRect(rect(), _st->shColor->b);
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}
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void ScrollShadow::changeVisibility(bool shown) {
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setVisible(shown);
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}
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ScrollBar::ScrollBar(ScrollArea *parent, bool vert, const style::flatScroll *st) : QWidget(parent)
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, _st(st)
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, _vertical(vert)
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, _over(false)
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, _overbar(false)
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, _moving(false)
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, _topSh(false)
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, _bottomSh(false)
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, _connected(vert ? parent->verticalScrollBar() : parent->horizontalScrollBar())
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, _scrollMax(_connected->maximum())
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, _hideIn(-1)
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, a_bg(_st->hiding ? _st->bgColor->transparent() : _st->bgColor->c)
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, a_bar(_st->hiding ? _st->barColor->transparent() : _st->barColor->c)
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, _a_appearance(animation(this, &ScrollBar::step_appearance)) {
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recountSize();
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_hideTimer.setSingleShot(true);
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connect(&_hideTimer, SIGNAL(timeout()), this, SLOT(onHideTimer()));
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connect(_connected, SIGNAL(valueChanged(int)), this, SLOT(onValueChanged()));
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connect(_connected, SIGNAL(rangeChanged(int, int)), this, SLOT(updateBar()));
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updateBar();
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}
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void ScrollBar::recountSize() {
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setGeometry(_vertical ? QRect(rtl() ? 0 : (area()->width() - _st->width), _st->deltat, _st->width, area()->height() - _st->deltat - _st->deltab) : QRect(_st->deltat, area()->height() - _st->width, area()->width() - _st->deltat - _st->deltab, _st->width));
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}
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void ScrollBar::onValueChanged() {
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area()->onScrolled();
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updateBar();
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}
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void ScrollBar::updateBar(bool force) {
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QRect newBar;
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if (_connected->maximum() != _scrollMax) {
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int32 oldMax = _scrollMax, newMax = _connected->maximum();
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_scrollMax = newMax;
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area()->rangeChanged(oldMax, newMax, _vertical);
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}
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if (_vertical) {
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int sh = area()->scrollHeight(), rh = height(), h = sh ? int32((rh * int64(area()->height())) / sh) : 0;
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if (h >= rh || !area()->scrollTopMax() || rh < _st->minHeight) {
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if (!isHidden()) hide();
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bool newTopSh = (_st->topsh < 0), newBottomSh = (_st->bottomsh < 0);
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if (newTopSh != _topSh || force) emit topShadowVisibility(_topSh = newTopSh);
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if (newBottomSh != _bottomSh || force) emit bottomShadowVisibility(_bottomSh = newBottomSh);
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return;
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}
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if (h <= _st->minHeight) h = _st->minHeight;
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int stm = area()->scrollTopMax(), y = stm ? int32(((rh - h) * int64(area()->scrollTop())) / stm) : 0;
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if (y > rh - h) y = rh - h;
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newBar = QRect(_st->deltax, y, width() - 2 * _st->deltax, h);
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} else {
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int sw = area()->scrollWidth(), rw = width(), w = sw ? int32((rw * int64(area()->width())) / sw) : 0;
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if (w >= rw || !area()->scrollLeftMax() || rw < _st->minHeight) {
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if (!isHidden()) hide();
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return;
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}
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if (w <= _st->minHeight) w = _st->minHeight;
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int slm = area()->scrollLeftMax(), x = slm ? int32(((rw - w) * int64(area()->scrollLeft())) / slm) : 0;
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if (x > rw - w) x = rw - w;
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newBar = QRect(x, _st->deltax, w, height() - 2 * _st->deltax);
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}
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if (newBar != _bar) {
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_bar = newBar;
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update();
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}
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if (_vertical) {
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bool newTopSh = (_st->topsh < 0) || (area()->scrollTop() > _st->topsh), newBottomSh = (_st->bottomsh < 0) || (area()->scrollTop() < area()->scrollTopMax() - _st->bottomsh);
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if (newTopSh != _topSh || force) emit topShadowVisibility(_topSh = newTopSh);
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if (newBottomSh != _bottomSh || force) emit bottomShadowVisibility(_bottomSh = newBottomSh);
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}
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if (isHidden()) show();
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}
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void ScrollBar::onHideTimer() {
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_hideIn = -1;
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a_bg.start(QColor(a_bg.current().red(), a_bg.current().green(), a_bg.current().blue(), 0));
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a_bar.start(QColor(a_bar.current().red(), a_bar.current().green(), a_bar.current().blue(), 0));
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_a_appearance.start();
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}
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ScrollArea *ScrollBar::area() {
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return static_cast<ScrollArea*>(parentWidget());
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}
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void ScrollBar::paintEvent(QPaintEvent *e) {
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if (!_bar.width() && !_bar.height()) {
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hide();
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return;
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}
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if (!a_bg.current().alpha() && !a_bar.current().alpha()) return;
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QPainter p(this);
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int32 deltal = _vertical ? _st->deltax : 0, deltar = _vertical ? _st->deltax : 0;
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int32 deltat = _vertical ? 0 : _st->deltax, deltab = _vertical ? 0 : _st->deltax;
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p.setPen(Qt::NoPen);
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if (_st->round) {
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p.setRenderHint(QPainter::HighQualityAntialiasing, true);
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p.setBrush(a_bg.current());
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p.drawRoundedRect(QRect(deltal, deltat, width() - deltal - deltar, height() - deltat - deltab), _st->round, _st->round);
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p.setBrush(a_bar.current());
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p.drawRoundedRect(_bar, _st->round, _st->round);
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p.setRenderHint(QPainter::HighQualityAntialiasing, false);
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} else {
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p.fillRect(QRect(deltal, deltat, width() - deltal - deltar, height() - deltat - deltab), a_bg.current());
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p.fillRect(_bar, a_bar.current());
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}
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}
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void ScrollBar::step_appearance(float64 ms, bool timer) {
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float64 dt = ms / _st->duration;
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if (dt >= 1) {
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_a_appearance.stop();
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a_bg.finish();
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a_bar.finish();
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} else {
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a_bg.update(dt, anim::linear);
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a_bar.update(dt, anim::linear);
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}
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if (timer) update();
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}
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void ScrollBar::hideTimeout(int64 dt) {
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if (_hideIn < 0) {
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a_bg.start((_over ? _st->bgOverColor : _st->bgColor)->c);
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a_bar.start((_overbar ? _st->barOverColor : _st->barColor)->c);
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_a_appearance.start();
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}
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_hideIn = dt;
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if (!_moving && _hideIn >= 0) {
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_hideTimer.start(_hideIn);
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}
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}
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void ScrollBar::enterEvent(QEvent *e) {
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_hideTimer.stop();
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setMouseTracking(true);
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_over = true;
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a_bg.start(_st->bgOverColor->c);
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a_bar.start(_st->barColor->c);
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_a_appearance.start();
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}
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void ScrollBar::leaveEvent(QEvent *e) {
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if (!_moving) {
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setMouseTracking(false);
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a_bg.start(_st->bgColor->c);
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a_bar.start(_st->barColor->c);
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_a_appearance.start();
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if (_hideIn >= 0) {
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_hideTimer.start(_hideIn);
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} else if (_st->hiding) {
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hideTimeout(_st->hiding);
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}
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}
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_over = _overbar = false;
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}
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void ScrollBar::mouseMoveEvent(QMouseEvent *e) {
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bool newOverBar = _bar.contains(e->pos());
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if (_overbar != newOverBar) {
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_overbar = newOverBar;
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if (!_moving) {
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a_bar.start((newOverBar ? _st->barOverColor : _st->barColor)->c);
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a_bg.start(_st->bgOverColor->c);
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_a_appearance.start();
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}
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}
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if (_moving) {
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int delta = 0, barDelta = _vertical ? (area()->height() - _bar.height()) : (area()->width() - _bar.width());
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if (barDelta > 0) {
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QPoint d = (e->globalPos() - _dragStart);
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delta = int32((_vertical ? (d.y() * int64(area()->scrollTopMax())) : (d.x() * int64(area()->scrollLeftMax()))) / barDelta);
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}
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_connected->setValue(_startFrom + delta);
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}
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}
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void ScrollBar::mousePressEvent(QMouseEvent *e) {
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if (!width() || !height()) return;
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_dragStart = e->globalPos();
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_moving = true;
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if (_overbar) {
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_startFrom = _connected->value();
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} else {
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int32 val = _vertical ? e->pos().y() : e->pos().x(), div = _vertical ? height() : width();
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val = (val <= _st->deltat) ? 0 : (val - _st->deltat);
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div = (div <= _st->deltat + _st->deltab) ? 1 : (div - _st->deltat - _st->deltab);
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_startFrom = _vertical ? int32((val * int64(area()->scrollTopMax())) / div) : ((val * int64(area()->scrollLeftMax())) / div);
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_connected->setValue(_startFrom);
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if (!_overbar) {
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_overbar = true;
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a_bar.start(_st->barOverColor->c);
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a_bg.start(_st->bgOverColor->c);
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_a_appearance.start();
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}
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}
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area()->setMovingByScrollBar(true);
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emit area()->scrollStarted();
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}
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void ScrollBar::mouseReleaseEvent(QMouseEvent *e) {
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if (_moving) {
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_moving = false;
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bool a = false;
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if (!_overbar) {
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if (!_over || _hideIn) {
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a_bar.start(_st->barColor->c);
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a = true;
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}
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}
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if (!_over) {
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if (_hideIn) {
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a_bg.start(_st->bgColor->c);
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a = true;
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}
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if (_hideIn >= 0) {
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_hideTimer.start(_hideIn);
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}
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}
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if (a) _a_appearance.start();
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area()->setMovingByScrollBar(false);
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emit area()->scrollFinished();
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}
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if (!_over) {
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setMouseTracking(false);
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}
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}
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void ScrollBar::resizeEvent(QResizeEvent *e) {
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updateBar();
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}
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void SplittedWidget::paintEvent(QPaintEvent *e) {
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Painter p(this);
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if (rtl()) {
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p.translate(-otherWidth(), 0);
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paintRegion(p, e->region().translated(otherWidth(), 0), false);
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} else {
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paintRegion(p, e->region(), false);
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}
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}
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void SplittedWidget::update(const QRect &r) {
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if (rtl()) {
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TWidget::update(r.translated(-otherWidth(), 0).intersected(rect()));
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emit updateOther(r);
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} else {
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TWidget::update(r.intersected(rect()));
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emit updateOther(r.translated(-width(), 0));
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}
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}
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void SplittedWidget::update(const QRegion &r) {
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if (rtl()) {
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TWidget::update(r.translated(-otherWidth(), 0).intersected(rect()));
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emit updateOther(r);
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} else {
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TWidget::update(r.intersected(rect()));
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emit updateOther(r.translated(-width(), 0));
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}
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}
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void SplittedWidgetOther::paintEvent(QPaintEvent *e) {
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Painter p(this);
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SplittedWidget *s = static_cast<SplittedWidget*>(static_cast<ScrollArea*>(parentWidget())->widget());
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if (rtl()) {
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s->paintRegion(p, e->region(), true);
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} else {
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p.translate(-s->width(), 0);
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s->paintRegion(p, e->region().translated(s->width(), 0), true);
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}
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}
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ScrollArea::ScrollArea(QWidget *parent, const style::flatScroll &st, bool handleTouch) : QScrollArea(parent)
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, _st(st)
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, _horizontalBar(this, false, &_st)
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, _verticalBar(this, true, &_st)
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, _topShadow(this, &_st)
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, _bottomShadow(this, &_st)
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, _touchEnabled(handleTouch) {
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setLayoutDirection(cLangDir());
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connect(_verticalBar, SIGNAL(topShadowVisibility(bool)), _topShadow, SLOT(changeVisibility(bool)));
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connect(_verticalBar, SIGNAL(bottomShadowVisibility(bool)), _bottomShadow, SLOT(changeVisibility(bool)));
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_verticalBar->updateBar(true);
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setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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setFrameStyle(QFrame::NoFrame | QFrame::Plain);
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viewport()->setAutoFillBackground(false);
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_horizontalValue = horizontalScrollBar()->value();
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_verticalValue = verticalScrollBar()->value();
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if (_touchEnabled) {
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viewport()->setAttribute(Qt::WA_AcceptTouchEvents);
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_touchTimer.setSingleShot(true);
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connect(&_touchTimer, SIGNAL(timeout()), this, SLOT(onTouchTimer()));
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connect(&_touchScrollTimer, SIGNAL(timeout()), this, SLOT(onTouchScrollTimer()));
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}
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}
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void ScrollArea::touchDeaccelerate(int32 elapsed) {
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int32 x = _touchSpeed.x();
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int32 y = _touchSpeed.y();
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_touchSpeed.setX((x == 0) ? x : (x > 0) ? qMax(0, x - elapsed) : qMin(0, x + elapsed));
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_touchSpeed.setY((y == 0) ? y : (y > 0) ? qMax(0, y - elapsed) : qMin(0, y + elapsed));
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}
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void ScrollArea::onScrolled() {
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myEnsureResized(widget());
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bool em = false;
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int horizontalValue = horizontalScrollBar()->value();
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int verticalValue = verticalScrollBar()->value();
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if (_horizontalValue != horizontalValue) {
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if (_disabled) {
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horizontalScrollBar()->setValue(_horizontalValue);
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} else {
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_horizontalValue = horizontalValue;
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if (_st.hiding) {
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_horizontalBar->hideTimeout(_st.hiding);
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}
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em = true;
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}
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}
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if (_verticalValue != verticalValue) {
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if (_disabled) {
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verticalScrollBar()->setValue(_verticalValue);
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} else {
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_verticalValue = verticalValue;
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if (_st.hiding) {
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_verticalBar->hideTimeout(_st.hiding);
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}
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em = true;
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}
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}
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if (em) {
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emit scrolled();
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if (!_movingByScrollBar) {
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sendSynteticMouseEvent(this, QEvent::MouseMove, Qt::NoButton);
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}
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}
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}
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int ScrollArea::scrollWidth() const {
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QWidget *w(widget());
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return w ? qMax(w->width(), width()) : width();
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}
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int ScrollArea::scrollHeight() const {
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QWidget *w(widget());
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return w ? qMax(w->height(), height()) : height();
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}
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int ScrollArea::scrollLeftMax() const {
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return scrollWidth() - width();
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}
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int ScrollArea::scrollTopMax() const {
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return scrollHeight() - height();
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}
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int ScrollArea::scrollLeft() const {
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return _horizontalValue;
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}
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int ScrollArea::scrollTop() const {
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return _verticalValue;
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}
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void ScrollArea::onTouchTimer() {
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_touchRightButton = true;
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}
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void ScrollArea::onTouchScrollTimer() {
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uint64 nowTime = getms();
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if (_touchScrollState == TouchScrollAcceleration && _touchWaitingAcceleration && (nowTime - _touchAccelerationTime) > 40) {
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_touchScrollState = TouchScrollManual;
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touchResetSpeed();
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} else if (_touchScrollState == TouchScrollAuto || _touchScrollState == TouchScrollAcceleration) {
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int32 elapsed = int32(nowTime - _touchTime);
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QPoint delta = _touchSpeed * elapsed / 1000;
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bool hasScrolled = touchScroll(delta);
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if (_touchSpeed.isNull() || !hasScrolled) {
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_touchScrollState = TouchScrollManual;
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_touchScroll = false;
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_touchScrollTimer.stop();
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} else {
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_touchTime = nowTime;
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}
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touchDeaccelerate(elapsed);
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}
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}
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void ScrollArea::touchUpdateSpeed() {
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const uint64 nowTime = getms();
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if (_touchPrevPosValid) {
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const int elapsed = nowTime - _touchSpeedTime;
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if (elapsed) {
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const QPoint newPixelDiff = (_touchPos - _touchPrevPos);
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const QPoint pixelsPerSecond = newPixelDiff * (1000 / elapsed);
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// fingers are inacurates, we ignore small changes to avoid stopping the autoscroll because
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// of a small horizontal offset when scrolling vertically
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const int newSpeedY = (qAbs(pixelsPerSecond.y()) > FingerAccuracyThreshold) ? pixelsPerSecond.y() : 0;
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const int newSpeedX = (qAbs(pixelsPerSecond.x()) > FingerAccuracyThreshold) ? pixelsPerSecond.x() : 0;
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if (_touchScrollState == TouchScrollAuto) {
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const int oldSpeedY = _touchSpeed.y();
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const int oldSpeedX = _touchSpeed.x();
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if ((oldSpeedY <= 0 && newSpeedY <= 0) || ((oldSpeedY >= 0 && newSpeedY >= 0)
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&& (oldSpeedX <= 0 && newSpeedX <= 0)) || (oldSpeedX >= 0 && newSpeedX >= 0)) {
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_touchSpeed.setY(snap((oldSpeedY + (newSpeedY / 4)), -MaxScrollAccelerated, +MaxScrollAccelerated));
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_touchSpeed.setX(snap((oldSpeedX + (newSpeedX / 4)), -MaxScrollAccelerated, +MaxScrollAccelerated));
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} else {
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_touchSpeed = QPoint();
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}
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} else {
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// we average the speed to avoid strange effects with the last delta
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if (!_touchSpeed.isNull()) {
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_touchSpeed.setX(snap((_touchSpeed.x() / 4) + (newSpeedX * 3 / 4), -MaxScrollFlick, +MaxScrollFlick));
|
|
_touchSpeed.setY(snap((_touchSpeed.y() / 4) + (newSpeedY * 3 / 4), -MaxScrollFlick, +MaxScrollFlick));
|
|
} else {
|
|
_touchSpeed = QPoint(newSpeedX, newSpeedY);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
_touchPrevPosValid = true;
|
|
}
|
|
_touchSpeedTime = nowTime;
|
|
_touchPrevPos = _touchPos;
|
|
}
|
|
|
|
void ScrollArea::touchResetSpeed() {
|
|
_touchSpeed = QPoint();
|
|
_touchPrevPosValid = false;
|
|
}
|
|
|
|
bool ScrollArea::eventFilter(QObject *obj, QEvent *e) {
|
|
bool res = QScrollArea::eventFilter(obj, e);
|
|
if (e->type() == QEvent::TouchBegin || e->type() == QEvent::TouchUpdate || e->type() == QEvent::TouchEnd || e->type() == QEvent::TouchCancel) {
|
|
QTouchEvent *ev = static_cast<QTouchEvent*>(e);
|
|
if (_touchEnabled && ev->device()->type() == QTouchDevice::TouchScreen) {
|
|
if (obj == widget()) {
|
|
touchEvent(ev);
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
bool ScrollArea::viewportEvent(QEvent *e) {
|
|
if (e->type() == QEvent::TouchBegin || e->type() == QEvent::TouchUpdate || e->type() == QEvent::TouchEnd || e->type() == QEvent::TouchCancel) {
|
|
QTouchEvent *ev = static_cast<QTouchEvent*>(e);
|
|
if (_touchEnabled && ev->device()->type() == QTouchDevice::TouchScreen) {
|
|
touchEvent(ev);
|
|
return true;
|
|
}
|
|
}
|
|
return QScrollArea::viewportEvent(e);
|
|
}
|
|
|
|
void ScrollArea::touchEvent(QTouchEvent *e) {
|
|
if (!e->touchPoints().isEmpty()) {
|
|
_touchPrevPos = _touchPos;
|
|
_touchPos = e->touchPoints().cbegin()->screenPos().toPoint();
|
|
}
|
|
|
|
switch (e->type()) {
|
|
case QEvent::TouchBegin:
|
|
if (_touchPress || e->touchPoints().isEmpty()) return;
|
|
_touchPress = true;
|
|
if (_touchScrollState == TouchScrollAuto) {
|
|
_touchScrollState = TouchScrollAcceleration;
|
|
_touchWaitingAcceleration = true;
|
|
_touchAccelerationTime = getms();
|
|
touchUpdateSpeed();
|
|
_touchStart = _touchPos;
|
|
} else {
|
|
_touchScroll = false;
|
|
_touchTimer.start(QApplication::startDragTime());
|
|
}
|
|
_touchStart = _touchPrevPos = _touchPos;
|
|
_touchRightButton = false;
|
|
break;
|
|
|
|
case QEvent::TouchUpdate:
|
|
if (!_touchPress) return;
|
|
if (!_touchScroll && (_touchPos - _touchStart).manhattanLength() >= QApplication::startDragDistance()) {
|
|
_touchTimer.stop();
|
|
_touchScroll = true;
|
|
touchUpdateSpeed();
|
|
}
|
|
if (_touchScroll) {
|
|
if (_touchScrollState == TouchScrollManual) {
|
|
touchScrollUpdated(_touchPos);
|
|
} else if (_touchScrollState == TouchScrollAcceleration) {
|
|
touchUpdateSpeed();
|
|
_touchAccelerationTime = getms();
|
|
if (_touchSpeed.isNull()) {
|
|
_touchScrollState = TouchScrollManual;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case QEvent::TouchEnd:
|
|
if (!_touchPress) return;
|
|
_touchPress = false;
|
|
if (_touchScroll) {
|
|
if (_touchScrollState == TouchScrollManual) {
|
|
_touchScrollState = TouchScrollAuto;
|
|
_touchPrevPosValid = false;
|
|
_touchScrollTimer.start(15);
|
|
_touchTime = getms();
|
|
} else if (_touchScrollState == TouchScrollAuto) {
|
|
_touchScrollState = TouchScrollManual;
|
|
_touchScroll = false;
|
|
touchResetSpeed();
|
|
} else if (_touchScrollState == TouchScrollAcceleration) {
|
|
_touchScrollState = TouchScrollAuto;
|
|
_touchWaitingAcceleration = false;
|
|
_touchPrevPosValid = false;
|
|
}
|
|
} else if (window()) { // one short tap -- like left mouse click, one long tap -- like right mouse click
|
|
Qt::MouseButton btn(_touchRightButton ? Qt::RightButton : Qt::LeftButton);
|
|
|
|
sendSynteticMouseEvent(this, QEvent::MouseMove, Qt::NoButton, _touchStart);
|
|
sendSynteticMouseEvent(this, QEvent::MouseButtonPress, btn, _touchStart);
|
|
sendSynteticMouseEvent(this, QEvent::MouseButtonRelease, btn, _touchStart);
|
|
|
|
if (_touchRightButton) {
|
|
auto windowHandle = window()->windowHandle();
|
|
auto localPoint = windowHandle->mapFromGlobal(_touchStart);
|
|
QContextMenuEvent ev(QContextMenuEvent::Mouse, localPoint, _touchStart, QGuiApplication::keyboardModifiers());
|
|
ev.setTimestamp(getms());
|
|
QGuiApplication::sendEvent(windowHandle, &ev);
|
|
}
|
|
}
|
|
_touchTimer.stop();
|
|
_touchRightButton = false;
|
|
break;
|
|
|
|
case QEvent::TouchCancel:
|
|
_touchPress = false;
|
|
_touchScroll = false;
|
|
_touchScrollState = TouchScrollManual;
|
|
_touchTimer.stop();
|
|
break;
|
|
}
|
|
}
|
|
|
|
void ScrollArea::touchScrollUpdated(const QPoint &screenPos) {
|
|
_touchPos = screenPos;
|
|
touchScroll(_touchPos - _touchPrevPos);
|
|
touchUpdateSpeed();
|
|
}
|
|
|
|
void ScrollArea::disableScroll(bool dis) {
|
|
_disabled = dis;
|
|
if (_disabled && _st.hiding) {
|
|
_horizontalBar->hideTimeout(0);
|
|
_verticalBar->hideTimeout(0);
|
|
}
|
|
}
|
|
|
|
void ScrollArea::scrollContentsBy(int dx, int dy) {
|
|
if (_disabled) {
|
|
return;
|
|
}
|
|
QScrollArea::scrollContentsBy(dx, dy);
|
|
}
|
|
|
|
bool ScrollArea::touchScroll(const QPoint &delta) {
|
|
int32 scTop = scrollTop(), scMax = scrollTopMax(), scNew = snap(scTop - delta.y(), 0, scMax);
|
|
if (scNew == scTop) return false;
|
|
|
|
scrollToY(scNew);
|
|
return true;
|
|
}
|
|
|
|
void ScrollArea::resizeEvent(QResizeEvent *e) {
|
|
QScrollArea::resizeEvent(e);
|
|
_horizontalBar->recountSize();
|
|
_verticalBar->recountSize();
|
|
_topShadow->setGeometry(QRect(0, 0, width(), qAbs(_st.topsh)));
|
|
_bottomShadow->setGeometry(QRect(0, height() - qAbs(_st.bottomsh), width(), qAbs(_st.bottomsh)));
|
|
if (SplittedWidget *w = qobject_cast<SplittedWidget*>(widget())) {
|
|
w->resize(width() - w->otherWidth(), w->height());
|
|
if (!rtl()) {
|
|
_other->move(w->width(), w->y());
|
|
}
|
|
}
|
|
emit geometryChanged();
|
|
}
|
|
|
|
void ScrollArea::moveEvent(QMoveEvent *e) {
|
|
QScrollArea::moveEvent(e);
|
|
emit geometryChanged();
|
|
}
|
|
|
|
void ScrollArea::keyPressEvent(QKeyEvent *e) {
|
|
if ((e->key() == Qt::Key_Up || e->key() == Qt::Key_Down) && e->modifiers().testFlag(Qt::AltModifier)) {
|
|
e->ignore();
|
|
} else if(e->key() == Qt::Key_Escape || e->key() == Qt::Key_Back) {
|
|
((QObject*)widget())->event(e);
|
|
} else {
|
|
QScrollArea::keyPressEvent(e);
|
|
}
|
|
}
|
|
|
|
void ScrollArea::enterEventHook(QEvent *e) {
|
|
if (_disabled) return;
|
|
if (_st.hiding) {
|
|
_horizontalBar->hideTimeout(_st.hiding);
|
|
_verticalBar->hideTimeout(_st.hiding);
|
|
}
|
|
return QScrollArea::enterEvent(e);
|
|
}
|
|
|
|
void ScrollArea::leaveEventHook(QEvent *e) {
|
|
if (_st.hiding) {
|
|
_horizontalBar->hideTimeout(0);
|
|
_verticalBar->hideTimeout(0);
|
|
}
|
|
return QScrollArea::leaveEvent(e);
|
|
}
|
|
|
|
void ScrollArea::scrollToY(int toTop, int toBottom) {
|
|
myEnsureResized(widget());
|
|
myEnsureResized(this);
|
|
|
|
int toMin = 0, toMax = scrollTopMax();
|
|
if (toTop < toMin) {
|
|
toTop = toMin;
|
|
} else if (toTop > toMax) {
|
|
toTop = toMax;
|
|
}
|
|
bool exact = (toBottom < 0);
|
|
|
|
int curTop = scrollTop(), curHeight = height(), curBottom = curTop + curHeight, scToTop = toTop;
|
|
if (!exact && toTop >= curTop) {
|
|
if (toBottom < toTop) toBottom = toTop;
|
|
if (toBottom <= curBottom) return;
|
|
|
|
scToTop = toBottom - curHeight;
|
|
if (scToTop > toTop) scToTop = toTop;
|
|
if (scToTop == curTop) return;
|
|
} else {
|
|
scToTop = toTop;
|
|
}
|
|
verticalScrollBar()->setValue(scToTop);
|
|
}
|
|
|
|
void ScrollArea::setWidget(QWidget *w) {
|
|
SplittedWidget *splitted = qobject_cast<SplittedWidget*>(w);
|
|
if (widget() && _touchEnabled) {
|
|
widget()->removeEventFilter(this);
|
|
if (!_widgetAcceptsTouch) widget()->setAttribute(Qt::WA_AcceptTouchEvents, false);
|
|
}
|
|
if (_other && !splitted) {
|
|
delete _other;
|
|
_other = 0;
|
|
disconnect(verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(onVerticalScroll()));
|
|
} else if (!_other && splitted) {
|
|
_other = new SplittedWidgetOther(this);
|
|
_other->setAttribute(Qt::WA_OpaquePaintEvent);
|
|
_other->resize(_verticalBar->width(), _other->height());
|
|
connect(verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(onVerticalScroll()));
|
|
_horizontalBar->raise();
|
|
_verticalBar->raise();
|
|
}
|
|
if (_ownsWidget) {
|
|
_ownsWidget = false;
|
|
delete takeWidget();
|
|
}
|
|
QScrollArea::setWidget(w);
|
|
if (w) {
|
|
w->setAutoFillBackground(false);
|
|
if (_touchEnabled) {
|
|
w->installEventFilter(this);
|
|
_widgetAcceptsTouch = w->testAttribute(Qt::WA_AcceptTouchEvents);
|
|
w->setAttribute(Qt::WA_AcceptTouchEvents);
|
|
}
|
|
if (splitted) {
|
|
splitted->setOtherWidth(_verticalBar->width());
|
|
w->setGeometry(rtl() ? splitted->otherWidth() : 0, 0, width() - splitted->otherWidth(), w->height());
|
|
connect(splitted, SIGNAL(resizeOther()), this, SLOT(onResizeOther()));
|
|
connect(splitted, SIGNAL(updateOther(const QRect&)), this, SLOT(onUpdateOther(const QRect&)));
|
|
connect(splitted, SIGNAL(updateOther(const QRegion&)), this, SLOT(onUpdateOther(const QRegion&)));
|
|
onResizeOther();
|
|
splitted->update();
|
|
}
|
|
}
|
|
}
|
|
|
|
void ScrollArea::setOwnedWidget(QWidget *widget) {
|
|
setWidget(widget);
|
|
_ownsWidget = true;
|
|
}
|
|
|
|
QWidget *ScrollArea::takeWidget() {
|
|
if (_other) {
|
|
delete _other;
|
|
_other = 0;
|
|
disconnect(verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(onVerticalScroll()));
|
|
}
|
|
return QScrollArea::takeWidget();
|
|
}
|
|
|
|
void ScrollArea::onResizeOther() {
|
|
_other->resize(_other->width(), widget()->height());
|
|
}
|
|
|
|
void ScrollArea::onUpdateOther(const QRect &r) {
|
|
_other->update(r.intersected(_other->rect()));
|
|
}
|
|
|
|
void ScrollArea::onUpdateOther(const QRegion &r) {
|
|
_other->update(r.intersected(_other->rect()));
|
|
}
|
|
|
|
void ScrollArea::onVerticalScroll() {
|
|
_other->move(_other->x(), widget()->y());
|
|
}
|
|
|
|
void ScrollArea::rangeChanged(int oldMax, int newMax, bool vertical) {
|
|
}
|
|
|
|
void ScrollArea::updateBars() {
|
|
_horizontalBar->update();
|
|
_verticalBar->update();
|
|
}
|
|
|
|
bool ScrollArea::focusNextPrevChild(bool next) {
|
|
if (QWidget::focusNextPrevChild(next)) {
|
|
// if (QWidget *fw = focusWidget())
|
|
// ensureWidgetVisible(fw);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void ScrollArea::setMovingByScrollBar(bool movingByScrollBar) {
|
|
_movingByScrollBar = movingByScrollBar;
|
|
}
|
|
|
|
ScrollArea::~ScrollArea() {
|
|
if (!_ownsWidget) {
|
|
takeWidget();
|
|
}
|
|
}
|