| 1 | /* |
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| 2 | SPDX-FileCopyrightText: 2022 Waqar Ahmed <waqar.17a@gmail.com> |
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| 3 | |
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| 4 | SPDX-License-Identifier: LGPL-2.0-or-later |
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| 5 | */ |
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| 6 | #include "documentation_tip.h" |
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| 7 | |
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| 8 | #include <QDebug> |
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| 9 | #include <QHBoxLayout> |
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| 10 | #include <QScreen> |
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| 11 | |
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| 12 | DocTip::DocTip(QWidget *parent) |
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| 13 | : QFrame(parent) |
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| 14 | , m_textView(new QTextBrowser(this)) |
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| 15 | { |
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| 16 | setFocusPolicy(Qt::NoFocus); |
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| 17 | |
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| 18 | m_textView->setFrameStyle(QFrame::Box | QFrame::Raised); |
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| 19 | |
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| 20 | setFixedWidth(250); |
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| 21 | setFixedHeight(150); |
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| 22 | |
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| 23 | auto layout = new QHBoxLayout(this); |
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| 24 | layout->setContentsMargins({}); |
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| 25 | layout->setSpacing(0); |
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| 26 | setContentsMargins({}); |
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| 27 | layout->addWidget(&m_stack); |
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| 28 | m_stack.addWidget(w: m_textView); |
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| 29 | } |
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| 30 | |
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| 31 | QWidget *DocTip::currentWidget() |
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| 32 | { |
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| 33 | return m_stack.currentWidget(); |
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| 34 | } |
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| 35 | |
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| 36 | void DocTip::clearWidgets() |
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| 37 | { |
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| 38 | for (auto *widget : m_widgets) { |
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| 39 | widget->deleteLater(); |
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| 40 | } |
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| 41 | m_widgets.clear(); |
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| 42 | } |
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| 43 | |
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| 44 | void DocTip::setText(const QString &s) |
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| 45 | { |
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| 46 | m_textView->setPlainText(s); |
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| 47 | if (m_stack.currentWidget() != m_textView) { |
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| 48 | m_stack.removeWidget(w: m_stack.currentWidget()); |
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| 49 | m_stack.addWidget(w: m_textView); |
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| 50 | } |
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| 51 | Q_ASSERT(m_stack.count() == 1); |
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| 52 | } |
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| 53 | |
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| 54 | void DocTip::setWidget(QWidget *widget) |
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| 55 | { |
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| 56 | if (auto w = m_stack.currentWidget()) { |
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| 57 | if (w != m_textView) { |
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| 58 | m_widgets.push_back(x: w); |
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| 59 | } |
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| 60 | m_stack.removeWidget(w); |
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| 61 | } |
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| 62 | |
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| 63 | if (!widget) { |
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| 64 | return; |
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| 65 | } |
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| 66 | |
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| 67 | m_stack.addWidget(w: widget); |
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| 68 | |
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| 69 | Q_ASSERT(m_stack.count() == 1); |
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| 70 | } |
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| 71 | |
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| 72 | void DocTip::updatePosition(QWidget *completionWidget) |
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| 73 | { |
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| 74 | auto parent = parentWidget(); |
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| 75 | if (!parent) { |
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| 76 | qWarning() << Q_FUNC_INFO << "Unexpected null parent!" ; |
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| 77 | return; |
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| 78 | } |
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| 79 | |
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| 80 | const auto parentRight = parent->geometry().right(); |
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| 81 | auto completionWidgetRight = completionWidget->geometry().right(); |
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| 82 | constexpr int Margin = 8; |
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| 83 | |
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| 84 | int x = 0; |
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| 85 | // is the completion widget too far right? |
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| 86 | if ((completionWidgetRight + this->width()) > parentRight) { |
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| 87 | // let's hope there is enough available space to the left of completionWidget |
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| 88 | x = (completionWidget->x() - this->width()) - Margin; |
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| 89 | } else { |
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| 90 | // we have enough space on the right |
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| 91 | x = completionWidget->x() + completionWidget->width() + Margin; |
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| 92 | } |
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| 93 | move(ax: x, ay: completionWidget->y()); |
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| 94 | } |
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| 95 | |
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