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160 lines
3.7 KiB
160 lines
3.7 KiB
/* |
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SPDX-FileCopyrightText: 2003-2007 Craig Drummond <craig@kde.org> |
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SPDX-License-Identifier: GPL-2.0-or-later |
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*/ |
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#include "FontPreview.h" |
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#include "CharTip.h" |
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#include <QMouseEvent> |
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#include <QPainter> |
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#include <QWheelEvent> |
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#include <stdlib.h> |
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namespace KFI |
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{ |
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static const int constBorder = 4; |
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static const int constStepSize = 16; |
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CFontPreview::CFontPreview(QWidget *parent) |
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: QWidget(parent) |
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, m_currentFace(1) |
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, m_lastWidth(0) |
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, m_lastHeight(0) |
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, m_styleInfo(KFI_NO_STYLE_INFO) |
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, m_tip(nullptr) |
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{ |
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m_engine = new CFcEngine; |
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} |
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CFontPreview::~CFontPreview() |
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{ |
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delete m_tip; |
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delete m_engine; |
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} |
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void CFontPreview::showFont(const QString &name, unsigned long styleInfo, int face) |
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{ |
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m_fontName = name; |
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m_styleInfo = styleInfo; |
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showFace(face); |
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} |
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void CFontPreview::showFace(int face) |
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{ |
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m_currentFace = face; |
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showFont(); |
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} |
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void CFontPreview::showFont() |
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{ |
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m_lastWidth = width() + constStepSize; |
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m_lastHeight = height() + constStepSize; |
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m_image = m_engine->draw(m_fontName, |
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m_styleInfo, |
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m_currentFace, |
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palette().text().color(), |
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palette().base().color(), |
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m_lastWidth, |
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m_lastHeight, |
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false, |
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m_range, |
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&m_chars); |
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if (!m_image.isNull()) { |
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m_lastChar = CFcEngine::TChar(); |
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setMouseTracking(m_chars.count() > 0); |
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update(); |
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Q_EMIT status(true); |
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Q_EMIT atMax(m_engine->atMax()); |
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Q_EMIT atMin(m_engine->atMin()); |
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} else { |
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m_lastChar = CFcEngine::TChar(); |
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setMouseTracking(false); |
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update(); |
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Q_EMIT status(false); |
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Q_EMIT atMax(true); |
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Q_EMIT atMin(true); |
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} |
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} |
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void CFontPreview::zoomIn() |
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{ |
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m_engine->zoomIn(); |
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showFont(); |
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Q_EMIT atMax(m_engine->atMax()); |
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} |
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void CFontPreview::zoomOut() |
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{ |
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m_engine->zoomOut(); |
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showFont(); |
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Q_EMIT atMin(m_engine->atMin()); |
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} |
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void CFontPreview::setUnicodeRange(const QList<CFcEngine::TRange> &r) |
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{ |
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m_range = r; |
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showFont(); |
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} |
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void CFontPreview::paintEvent(QPaintEvent *) |
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{ |
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QPainter paint(this); |
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paint.fillRect(rect(), palette().base()); |
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if (!m_image.isNull()) { |
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if (abs(width() - m_lastWidth) > constStepSize || abs(height() - m_lastHeight) > constStepSize) { |
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showFont(); |
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} else { |
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paint.drawImage( |
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QPointF(constBorder, constBorder), |
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m_image, |
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QRectF(0, 0, (width() - (constBorder * 2)) * m_image.devicePixelRatioF(), (height() - (constBorder * 2)) * m_image.devicePixelRatioF())); |
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} |
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} |
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} |
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void CFontPreview::mouseMoveEvent(QMouseEvent *event) |
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{ |
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if (!m_chars.isEmpty()) { |
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QList<CFcEngine::TChar>::ConstIterator end(m_chars.end()); |
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if (m_lastChar.isNull() || !m_lastChar.contains(event->pos())) { |
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for (QList<CFcEngine::TChar>::ConstIterator it(m_chars.begin()); it != end; ++it) { |
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if ((*it).contains(event->pos())) { |
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if (!m_tip) { |
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m_tip = new CCharTip(this); |
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} |
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m_tip->setItem(*it); |
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m_lastChar = *it; |
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break; |
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} |
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} |
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} |
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} |
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} |
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void CFontPreview::wheelEvent(QWheelEvent *e) |
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{ |
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if (e->angleDelta().y() > 0) { |
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zoomIn(); |
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} else if (e->angleDelta().y() < 0) { |
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zoomOut(); |
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} |
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e->accept(); |
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} |
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QSize CFontPreview::sizeHint() const |
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{ |
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return QSize(132, 132); |
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} |
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QSize CFontPreview::minimumSizeHint() const |
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{ |
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return QSize(32, 32); |
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} |
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}
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