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Diffstat (limited to 'examples/painting/fontsampler/mainwindow.cpp')
-rw-r--r-- | examples/painting/fontsampler/mainwindow.cpp | 380 |
1 files changed, 0 insertions, 380 deletions
diff --git a/examples/painting/fontsampler/mainwindow.cpp b/examples/painting/fontsampler/mainwindow.cpp deleted file mode 100644 index ae45613abf..0000000000 --- a/examples/painting/fontsampler/mainwindow.cpp +++ /dev/null @@ -1,380 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 Nokia Corporation and its Subsidiary(-ies) 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> -#ifndef QT_NO_PRINTER -#include <QPrinter> -#include <QPrintDialog> -#include <QPrintPreviewDialog> -#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, SIGNAL(triggered()), qApp, SLOT(quit())); - connect(fontTree, SIGNAL(currentItemChanged(QTreeWidgetItem*,QTreeWidgetItem*)), - this, SLOT(showFont(QTreeWidgetItem*))); - connect(fontTree, SIGNAL(itemChanged(QTreeWidgetItem*,int)), - this, SLOT(updateStyles(QTreeWidgetItem*,int))); - - fontTree->setItemSelected(fontTree->topLevelItem(0), true); - showFont(fontTree->topLevelItem(0)); -} - -void MainWindow::setupFontTree() -{ - QFontDatabase database; - fontTree->setColumnCount(1); - fontTree->setHeaderLabels(QStringList() << tr("Font")); - - foreach (QString family, database.families()) { - const QStringList styles = database.styles(family); - if (styles.isEmpty()) - continue; - - QTreeWidgetItem *familyItem = new QTreeWidgetItem(fontTree); - familyItem->setText(0, family); - familyItem->setCheckState(0, Qt::Unchecked); - - foreach (QString style, styles) { - QTreeWidgetItem *styleItem = new QTreeWidgetItem(familyItem); - styleItem->setText(0, style); - styleItem->setCheckState(0, Qt::Unchecked); - styleItem->setData(0, Qt::UserRole, - QVariant(database.weight(family, style))); - styleItem->setData(0, Qt::UserRole + 1, - QVariant(database.italic(family, style))); - } - } -} - -void MainWindow::on_clearAction_triggered() -{ - QTreeWidgetItem *currentItem = fontTree->currentItem(); - foreach (QTreeWidgetItem *item, fontTree->selectedItems()) - fontTree->setItemSelected(item, false); - fontTree->setItemSelected(currentItem, true); -} - -void MainWindow::on_markAction_triggered() -{ - markUnmarkFonts(Qt::Checked); -} - -void MainWindow::on_unmarkAction_triggered() -{ - markUnmarkFonts(Qt::Unchecked); -} - -void MainWindow::markUnmarkFonts(Qt::CheckState state) -{ - QList<QTreeWidgetItem *> items = fontTree->selectedItems(); - foreach (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(); - textEdit->document()->setDefaultFont(QFont(family, 32, weight, italic)); - - 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; - - if (state == Qt::Checked && - parent->checkState(0) == Qt::Unchecked) { - // Mark parent items when child items are checked. - parent->setCheckState(0, Qt::Checked); - - } else if (state == Qt::Unchecked && - parent->checkState(0) == Qt::Checked) { - - bool marked = false; - for (int row = 0; row < parent->childCount(); ++row) { - if (parent->child(row)->checkState(0) == Qt::Checked) { - marked = true; - break; - } - } - // Unmark parent items when all child items are unchecked. - if (!marked) - parent->setCheckState(0, Qt::Unchecked); - } - } else { - int row; - int number = 0; - for (row = 0; row < item->childCount(); ++row) { - if (item->child(row)->checkState(0) == Qt::Checked) - ++number; - } - - // Mark/unmark all child items when marking/unmarking top-level - // items. - if (state == Qt::Checked && number == 0) { - for (row = 0; row < item->childCount(); ++row) { - if (item->child(row)->checkState(0) == Qt::Unchecked) - item->child(row)->setCheckState(0, Qt::Checked); - } - } else if (state == Qt::Unchecked && number > 0) { - for (row = 0; row < item->childCount(); ++row) { - if (item->child(row)->checkState(0) == Qt::Checked) - item->child(row)->setCheckState(0, Qt::Unchecked); - } - } - } - - 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; -} - -#ifndef QT_NO_PRINTER -void MainWindow::on_printAction_triggered() -{ - 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); -} - -void MainWindow::printDocument(QPrinter *printer) -{ - 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(); -} - -void MainWindow::on_printPreviewAction_triggered() -{ - pageMap = currentPageMap(); - - if (pageMap.count() == 0) - return; - - QPrinter printer(QPrinter::HighResolution); - QPrintPreviewDialog preview(&printer, this); - connect(&preview, SIGNAL(paintRequested(QPrinter*)), - this, SLOT(printDocument(QPrinter*))); - preview.exec(); -} - -void MainWindow::printPage(int index, QPainter *painter, QPrinter *printer) -{ - QString family = pageMap.keys()[index]; - StyleItems items = pageMap[family]; - - // Find the dimensions of the text on each page. - qreal width = 0.0; - qreal height = 0.0; - foreach (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. - foreach (int size, sampleSizes) { - QFont font(family, size, weight, italic); - 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().width() / width; - qreal yScale = printer->pageRect().height() / height; - qreal scale = qMin(xScale, yScale); - - qreal remainingHeight = printer->pageRect().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().width()/2.0, printer->pageRect().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; - - foreach (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. - foreach (int size, sampleSizes) { - QFont font(family, size, weight, italic); - 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 |