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135 lines
3.5 KiB
C++
135 lines
3.5 KiB
C++
/******************************************************************************
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Copyright (C) 2025 by Taylor Giampaolo <warchamp7@obsproject.com>
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This program 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 2 of the License, or
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(at your option) any later version.
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This program 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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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#include <components/FlowFrame.hpp>
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#include <QKeyEvent>
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#include <QScrollArea>
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FlowFrame::FlowFrame(QWidget *parent) : QFrame(parent)
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{
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layout = new FlowLayout(this);
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setLayout(layout);
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}
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void FlowFrame::keyPressEvent(QKeyEvent *event)
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{
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QWidget *focused = focusWidget();
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if (!focused) {
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return;
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}
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int index = -1;
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for (int i = 0; i < layout->count(); ++i) {
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if (!layout->itemAt(i)->widget()) {
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continue;
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}
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auto focusProxy = layout->itemAt(i)->widget()->focusProxy();
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if (layout->itemAt(i)->widget() == focused || focusProxy == focused) {
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if (focusProxy == focused) {
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focused = layout->itemAt(i)->widget();
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}
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index = i;
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break;
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}
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}
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if (index == -1) {
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return;
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}
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const QRect focusedRect = focused->geometry();
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QWidget *nextFocus = nullptr;
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switch (event->key()) {
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case Qt::Key_Right:
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case Qt::Key_Down:
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case Qt::Key_Left:
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case Qt::Key_Up: {
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// Find next widget in the given direction
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int bestDistance = INT_MAX;
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for (int i = 0; i < layout->count(); ++i) {
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if (i == index) {
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continue;
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}
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QWidget *widget = layout->itemAt(i)->widget();
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const QRect rect = widget->geometry();
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bool isCandidate = false;
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int distance = INT_MAX;
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switch (event->key()) {
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case Qt::Key_Right:
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if (rect.left() > focusedRect.right()) {
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distance = (rect.left() - focusedRect.right()) +
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qAbs(rect.center().y() - focusedRect.center().y());
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isCandidate = true;
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}
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break;
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case Qt::Key_Left:
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if (rect.right() < focusedRect.left()) {
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distance = (focusedRect.left() - rect.right()) +
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qAbs(rect.center().y() - focusedRect.center().y());
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isCandidate = true;
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}
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break;
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case Qt::Key_Down:
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if (rect.top() > focusedRect.bottom()) {
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distance = (rect.top() - focusedRect.bottom()) +
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qAbs(rect.center().x() - focusedRect.center().x());
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isCandidate = true;
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}
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break;
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case Qt::Key_Up:
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if (rect.bottom() < focusedRect.top()) {
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distance = (focusedRect.top() - rect.bottom()) +
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qAbs(rect.center().x() - focusedRect.center().x());
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isCandidate = true;
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}
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break;
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}
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if (isCandidate && distance < bestDistance) {
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bestDistance = distance;
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nextFocus = widget;
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}
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}
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break;
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}
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default:
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QWidget::keyPressEvent(event);
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return;
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}
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if (nextFocus) {
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nextFocus->setFocus();
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QWidget *scrollParent = nextFocus->parentWidget();
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while (scrollParent) {
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QScrollArea *scrollArea = qobject_cast<QScrollArea *>(scrollParent);
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if (scrollArea) {
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scrollArea->ensureWidgetVisible(nextFocus, 20, 20);
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break;
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}
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scrollParent = scrollParent->parentWidget();
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}
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}
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}
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