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Diffstat (limited to 'examples/widgets/painting/fontsampler/mainwindow.cpp')
| -rw-r--r-- | examples/widgets/painting/fontsampler/mainwindow.cpp | 361 |
1 files changed, 0 insertions, 361 deletions
diff --git a/examples/widgets/painting/fontsampler/mainwindow.cpp b/examples/widgets/painting/fontsampler/mainwindow.cpp deleted file mode 100644 index 33f6f9a927..0000000000 --- a/examples/widgets/painting/fontsampler/mainwindow.cpp +++ /dev/null @@ -1,361 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include <QtWidgets> -#if defined(QT_PRINTSUPPORT_LIB) -#include <QtPrintSupport/qtprintsupportglobal.h> -#if QT_CONFIG(printdialog) -#include <QPrinter> -#include <QPrintDialog> -#if QT_CONFIG(printpreviewdialog) -#include <QPrintPreviewDialog> -#endif -#endif -#endif - -#include "mainwindow.h" - -MainWindow::MainWindow(QWidget *parent) - : QMainWindow(parent) -{ - setupUi(this); - - sampleSizes << 32 << 24 << 16 << 14 << 12 << 8 << 4 << 2 << 1; - markedCount = 0; - setupFontTree(); - - connect(quitAction, &QAction::triggered, - qApp, &QApplication::quit); - connect(fontTree, &QTreeWidget::currentItemChanged, - this, &MainWindow::showFont); - connect(fontTree, &QTreeWidget::itemChanged, - this, &MainWindow::updateStyles); - - fontTree->topLevelItem(0)->setSelected(true); - showFont(fontTree->topLevelItem(0)); -} - -void MainWindow::setupFontTree() -{ - fontTree->setColumnCount(1); - fontTree->setHeaderLabels({ tr("Font") }); - - const QStringList fontFamilies = QFontDatabase::families(); - for (const QString &family : fontFamilies) { - const QStringList styles = QFontDatabase::styles(family); - if (styles.isEmpty()) - continue; - - QTreeWidgetItem *familyItem = new QTreeWidgetItem(fontTree); - familyItem->setText(0, family); - familyItem->setCheckState(0, Qt::Unchecked); - familyItem->setFlags(familyItem->flags() | Qt::ItemIsAutoTristate); - - for (const QString &style : styles) { - QTreeWidgetItem *styleItem = new QTreeWidgetItem(familyItem); - styleItem->setText(0, style); - styleItem->setCheckState(0, Qt::Unchecked); - styleItem->setData(0, Qt::UserRole, QVariant(QFontDatabase::weight(family, style))); - styleItem->setData(0, Qt::UserRole + 1, QVariant(QFontDatabase::italic(family, style))); - } - } -} - -void MainWindow::on_clearAction_triggered() -{ - const QList<QTreeWidgetItem *> items = fontTree->selectedItems(); - for (QTreeWidgetItem *item : items) - item->setSelected(false); - fontTree->currentItem()->setSelected(true); -} - -void MainWindow::on_markAction_triggered() -{ - markUnmarkFonts(Qt::Checked); -} - -void MainWindow::on_unmarkAction_triggered() -{ - markUnmarkFonts(Qt::Unchecked); -} - -void MainWindow::markUnmarkFonts(Qt::CheckState state) -{ - const QList<QTreeWidgetItem *> items = fontTree->selectedItems(); - for (QTreeWidgetItem *item : items) { - if (item->checkState(0) != state) - item->setCheckState(0, state); - } -} - -void MainWindow::showFont(QTreeWidgetItem *item) -{ - if (!item) - return; - - QString family; - QString style; - int weight; - bool italic; - - if (item->parent()) { - family = item->parent()->text(0); - style = item->text(0); - weight = item->data(0, Qt::UserRole).toInt(); - italic = item->data(0, Qt::UserRole + 1).toBool(); - } else { - family = item->text(0); - style = item->child(0)->text(0); - weight = item->child(0)->data(0, Qt::UserRole).toInt(); - italic = item->child(0)->data(0, Qt::UserRole + 1).toBool(); - } - - QString oldText = textEdit->toPlainText().trimmed(); - bool modified = textEdit->document()->isModified(); - textEdit->clear(); - QFont font(family, 32, weight, italic); - font.setStyleName(style); - textEdit->document()->setDefaultFont(font); - - QTextCursor cursor = textEdit->textCursor(); - QTextBlockFormat blockFormat; - blockFormat.setAlignment(Qt::AlignCenter); - cursor.insertBlock(blockFormat); - - if (modified) - cursor.insertText(QString(oldText)); - else - cursor.insertText(QString("%1 %2").arg(family).arg(style)); - - textEdit->document()->setModified(modified); -} - -void MainWindow::updateStyles(QTreeWidgetItem *item, int column) -{ - if (!item || column != 0) - return; - - Qt::CheckState state = item->checkState(0); - QTreeWidgetItem *parent = item->parent(); - - if (parent) { - // Only count style items. - if (state == Qt::Checked) - ++markedCount; - else - --markedCount; - } - - printAction->setEnabled(markedCount > 0); - printPreviewAction->setEnabled(markedCount > 0); -} - -QMap<QString, StyleItems> MainWindow::currentPageMap() -{ - QMap<QString, StyleItems> pageMap; - - for (int row = 0; row < fontTree->topLevelItemCount(); ++row) { - QTreeWidgetItem *familyItem = fontTree->topLevelItem(row); - QString family; - - if (familyItem->checkState(0) == Qt::Checked) { - family = familyItem->text(0); - pageMap[family] = StyleItems(); - } - - for (int childRow = 0; childRow < familyItem->childCount(); ++childRow) { - QTreeWidgetItem *styleItem = familyItem->child(childRow); - if (styleItem->checkState(0) == Qt::Checked) - pageMap[family].append(styleItem); - } - } - - return pageMap; -} - -void MainWindow::on_printAction_triggered() -{ -#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printdialog) - pageMap = currentPageMap(); - - if (pageMap.count() == 0) - return; - - QPrinter printer(QPrinter::HighResolution); - QPrintDialog dialog(&printer, this); - if (dialog.exec() != QDialog::Accepted) - return; - - int from = printer.fromPage(); - int to = printer.toPage(); - if (from <= 0 && to <= 0) - printer.setFromTo(1, pageMap.keys().count()); - - printDocument(&printer); -#endif -} - -void MainWindow::printDocument(QPrinter *printer) -{ -#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printdialog) - printer->setFromTo(1, pageMap.count()); - - QProgressDialog progress(tr("Preparing font samples..."), tr("&Cancel"), - 0, pageMap.count(), this); - progress.setWindowModality(Qt::ApplicationModal); - progress.setWindowTitle(tr("Font Sampler")); - progress.setMinimum(printer->fromPage() - 1); - progress.setMaximum(printer->toPage()); - - QPainter painter; - painter.begin(printer); - bool firstPage = true; - - for (int page = printer->fromPage(); page <= printer->toPage(); ++page) { - - if (!firstPage) - printer->newPage(); - - qApp->processEvents(); - if (progress.wasCanceled()) - break; - - printPage(page - 1, &painter, printer); - progress.setValue(page); - firstPage = false; - } - - painter.end(); -#endif -} - -void MainWindow::on_printPreviewAction_triggered() -{ -#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printpreviewdialog) - pageMap = currentPageMap(); - - if (pageMap.count() == 0) - return; - - QPrinter printer(QPrinter::HighResolution); - QPrintPreviewDialog preview(&printer, this); - connect(&preview, &QPrintPreviewDialog::paintRequested, - this, &MainWindow::printDocument); - preview.exec(); -#endif -} - -void MainWindow::printPage(int index, QPainter *painter, QPrinter *printer) -{ -#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printdialog) - const QString family = std::next(pageMap.begin(), index).key(); - const StyleItems items = pageMap.value(family); - - // Find the dimensions of the text on each page. - qreal width = 0.0; - qreal height = 0.0; - for (const QTreeWidgetItem *item : items) { - QString style = item->text(0); - int weight = item->data(0, Qt::UserRole).toInt(); - bool italic = item->data(0, Qt::UserRole + 1).toBool(); - - // Calculate the maximum width and total height of the text. - for (int size : qAsConst(sampleSizes)) { - QFont font(family, size, weight, italic); - font.setStyleName(style); - font = QFont(font, painter->device()); - QFontMetricsF fontMetrics(font); - QRectF rect = fontMetrics.boundingRect( - QString("%1 %2").arg(family).arg(style)); - width = qMax(rect.width(), width); - height += rect.height(); - } - } - - qreal xScale = printer->pageRect(QPrinter::DevicePixel).width() / width; - qreal yScale = printer->pageRect(QPrinter::DevicePixel).height() / height; - qreal scale = qMin(xScale, yScale); - - qreal remainingHeight = printer->pageRect(QPrinter::DevicePixel).height()/scale - height; - qreal spaceHeight = (remainingHeight / 4.0) / (items.count() + 1); - qreal interLineHeight = (remainingHeight / 4.0) / (sampleSizes.count() * items.count()); - - painter->save(); - painter->translate(printer->pageRect(QPrinter::DevicePixel).width() / 2.0, printer->pageRect(QPrinter::DevicePixel).height() / 2.0); - painter->scale(scale, scale); - painter->setBrush(QBrush(Qt::black)); - - qreal x = -width / 2.0; - qreal y = -height / 2.0 - remainingHeight / 4.0 + spaceHeight; - - for (const QTreeWidgetItem *item : items) { - QString style = item->text(0); - int weight = item->data(0, Qt::UserRole).toInt(); - bool italic = item->data(0, Qt::UserRole + 1).toBool(); - - // Draw each line of text. - for (int size : qAsConst(sampleSizes)) { - QFont font(family, size, weight, italic); - font.setStyleName(style); - font = QFont(font, painter->device()); - QFontMetricsF fontMetrics(font); - QRectF rect = fontMetrics.boundingRect(QString("%1 %2").arg( - font.family()).arg(style)); - y += rect.height(); - painter->setFont(font); - painter->drawText(QPointF(x, y), QString("%1 %2").arg(family).arg(style)); - y += interLineHeight; - } - y += spaceHeight; - } - - painter->restore(); -#endif -} |