mirror of
https://github.com/JakubMelka/PDF4QT.git
synced 2025-01-06 21:32:19 +01:00
371 lines
11 KiB
C++
371 lines
11 KiB
C++
// Copyright (C) 2019-2022 Jakub Melka
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//
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// This file is part of PDF4QT.
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//
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// PDF4QT is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// with the written consent of the copyright owner, any later version.
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//
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// PDF4QT 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 Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with PDF4QT. If not, see <https://www.gnu.org/licenses/>.
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#include "pdfwidgetutils.h"
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#include "pdfcolorconvertor.h"
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#include <map>
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#include <set>
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#include <optional>
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#include <QMenu>
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#include <QAction>
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#include <QDialog>
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#include <QLayout>
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#include <QPainter>
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#include <QPixmap>
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#include <QGroupBox>
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#include <QMessageBox>
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#include <QApplication>
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#include <QStyleHints>
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#include <QStyleFactory>
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#include "pdfdbgheap.h"
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#ifdef Q_OS_MAC
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int qt_default_dpi_x() { return 72; }
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int qt_default_dpi_y() { return 72; }
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#else
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int qt_default_dpi_x() { return 96; }
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int qt_default_dpi_y() { return 96; }
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#endif
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namespace pdf
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{
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static constexpr bool isScalingNeeded()
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{
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return QT_VERSION_MAJOR < 6;
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}
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int PDFWidgetUtils::getPixelSize(const QPaintDevice* device, pdf::PDFReal sizeMM)
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{
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const int width = device->width();
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const int height = device->height();
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if (width > height)
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{
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return PDFReal(width) * sizeMM / PDFReal(device->widthMM());
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}
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else
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{
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return PDFReal(height) * sizeMM / PDFReal(device->heightMM());
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}
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}
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int PDFWidgetUtils::scaleDPI_x(const QPaintDevice* device, int unscaledSize)
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{
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if constexpr (isScalingNeeded())
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{
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const double logicalDPI_x = device->logicalDpiX();
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const double defaultDPI_x = qt_default_dpi_x();
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return (logicalDPI_x / defaultDPI_x) * unscaledSize;
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}
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else
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{
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return unscaledSize;
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}
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}
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int PDFWidgetUtils::scaleDPI_y(const QPaintDevice* device, int unscaledSize)
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{
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if constexpr (isScalingNeeded())
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{
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const double logicalDPI_y = device->logicalDpiY();
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const double defaultDPI_y = qt_default_dpi_y();
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return (logicalDPI_y / defaultDPI_y) * unscaledSize;
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}
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else
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{
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return unscaledSize;
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}
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}
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PDFReal PDFWidgetUtils::scaleDPI_x(const QPaintDevice* device, PDFReal unscaledSize)
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{
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if constexpr (isScalingNeeded())
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{
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const double logicalDPI_x = device->logicalDpiX();
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const double defaultDPI_x = qt_default_dpi_x();
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return (logicalDPI_x / defaultDPI_x) * unscaledSize;
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}
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else
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{
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return unscaledSize;
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}
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}
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void PDFWidgetUtils::scaleWidget(QWidget* widget, QSize unscaledSize)
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{
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if constexpr (!isScalingNeeded())
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{
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return;
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}
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const double logicalDPI_x = widget->logicalDpiX();
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const double logicalDPI_y = widget->logicalDpiY();
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const double defaultDPI_x = qt_default_dpi_x();
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const double defaultDPI_y = qt_default_dpi_y();
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const int width = (logicalDPI_x / defaultDPI_x) * unscaledSize.width();
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const int height = (logicalDPI_y / defaultDPI_y) * unscaledSize.height();
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widget->resize(width, height);
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}
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QSize PDFWidgetUtils::scaleDPI(const QPaintDevice* widget, QSize unscaledSize)
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{
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if constexpr (isScalingNeeded())
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{
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const double logicalDPI_x = widget->logicalDpiX();
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const double logicalDPI_y = widget->logicalDpiY();
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const double defaultDPI_x = qt_default_dpi_x();
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const double defaultDPI_y = qt_default_dpi_y();
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const int width = (logicalDPI_x / defaultDPI_x) * unscaledSize.width();
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const int height = (logicalDPI_y / defaultDPI_y) * unscaledSize.height();
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return QSize(width, height);
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}
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else
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{
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return unscaledSize;
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}
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}
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void PDFWidgetUtils::style(QWidget* widget)
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{
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const int dialogMarginX = scaleDPI_x(widget, 12);
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const int dialogMarginY = scaleDPI_y(widget, 12);
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const int dialogSpacing = scaleDPI_y(widget, 12);
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const int groupBoxMarginX = scaleDPI_x(widget, 20);
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const int groupBoxMarginY = scaleDPI_y(widget, 20);
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const int groupBoxSpacing = scaleDPI_y(widget, 12);
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QList<QWidget*> childWidgets = widget->findChildren<QWidget*>();
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childWidgets.append(widget);
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for (QWidget* childWidget : childWidgets)
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{
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if (qobject_cast<QGroupBox*>(childWidget))
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{
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childWidget->layout()->setContentsMargins(groupBoxMarginX, groupBoxMarginY, groupBoxMarginX, groupBoxMarginY);
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childWidget->layout()->setSpacing(groupBoxSpacing);
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}
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else if (qobject_cast<QDialog*>(childWidget))
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{
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childWidget->layout()->setContentsMargins(dialogMarginX, dialogMarginY, dialogMarginX, dialogMarginY);
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childWidget->layout()->setSpacing(dialogSpacing);
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}
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}
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}
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void PDFWidgetUtils::setDarkTheme(bool isLightTheme, bool isDarkTheme)
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{
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if (isLightTheme)
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{
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QApplication::styleHints()->setColorScheme(Qt::ColorScheme::Light);
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}
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if (isDarkTheme)
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{
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QApplication::styleHints()->setColorScheme(Qt::ColorScheme::Dark);
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}
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if (PDFWidgetUtils::isDarkTheme())
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{
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QPalette darkPalette = QApplication::palette();
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#ifdef Q_OS_WIN
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QApplication::setStyle(QStyleFactory::create("Fusion"));
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// Basic colors
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darkPalette.setColor(QPalette::WindowText, QColor(220, 220, 220));
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darkPalette.setColor(QPalette::Button, QColor(53, 53, 53));
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darkPalette.setColor(QPalette::Light, QColor(70, 70, 70));
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darkPalette.setColor(QPalette::Midlight, QColor(60, 60, 60));
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darkPalette.setColor(QPalette::Dark, QColor(35, 35, 35));
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darkPalette.setColor(QPalette::Mid, QColor(40, 40, 40));
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// Texts
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darkPalette.setColor(QPalette::Text, QColor(220, 220, 220));
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darkPalette.setColor(QPalette::BrightText, Qt::red);
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darkPalette.setColor(QPalette::ButtonText, QColor(220, 220, 220));
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// Background
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darkPalette.setColor(QPalette::Base, QColor(42, 42, 42));
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darkPalette.setColor(QPalette::Window, QColor(53, 53, 53));
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darkPalette.setColor(QPalette::Shadow, QColor(20, 20, 20));
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// Highlight
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darkPalette.setColor(QPalette::Highlight, QColor(42, 130, 218)); // Barva výběru
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darkPalette.setColor(QPalette::HighlightedText, Qt::black); // Text ve výběru
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// Links
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darkPalette.setColor(QPalette::Link, QColor(42, 130, 218)); // Odkazy
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darkPalette.setColor(QPalette::LinkVisited, QColor(100, 100, 150)); // Navštívené odkazy
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// Alternative background
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darkPalette.setColor(QPalette::AlternateBase, QColor(66, 66, 66)); // Např. střídavé řádky v tabulce
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// Special roles
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darkPalette.setColor(QPalette::NoRole, QColor(0, 0, 0, 0));
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// Help
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darkPalette.setColor(QPalette::ToolTipBase, QColor(53, 53, 53));
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darkPalette.setColor(QPalette::ToolTipText, QColor(220, 220, 220));
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for (int i = 0; i < QPalette::NColorRoles; ++i)
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{
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QColor disabledColor = darkPalette.color(QPalette::Disabled, static_cast<QPalette::ColorRole>(i));
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disabledColor = disabledColor.darker(200);
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darkPalette.setColor(QPalette::Disabled, static_cast<QPalette::ColorRole>(i), disabledColor);
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QColor currentColor = darkPalette.color(QPalette::Current, static_cast<QPalette::ColorRole>(i));
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currentColor = currentColor.lighter(150);
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darkPalette.setColor(QPalette::Current, static_cast<QPalette::ColorRole>(i), currentColor);
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}
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#endif
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// Placeholder text (Qt 5.12+)
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darkPalette.setColor(QPalette::PlaceholderText, QColor(150, 150, 150));
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// Accents (Qt 6.5+)
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darkPalette.setColor(QPalette::Accent, QColor(42, 130, 218));
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QApplication::setPalette(darkPalette);
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}
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}
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bool PDFWidgetUtils::isDarkTheme()
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{
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Qt::ColorScheme colorScheme = QApplication::styleHints()->colorScheme();
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return colorScheme == Qt::ColorScheme::Dark;
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}
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void PDFWidgetUtils::convertActionForDarkTheme(QAction* action, QSize iconSize, qreal devicePixelRatioF)
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{
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if (!action)
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{
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return;
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}
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QIcon icon = action->icon();
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if (!icon.isNull())
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{
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icon = pdf::PDFWidgetUtils::convertIconForDarkTheme(icon, iconSize, devicePixelRatioF);
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action->setIcon(icon);
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}
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}
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QIcon PDFWidgetUtils::convertIconForDarkTheme(QIcon icon, QSize iconSize, qreal devicePixelRatioF)
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{
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QPixmap pixmap(iconSize * devicePixelRatioF);
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pixmap.setDevicePixelRatio(devicePixelRatioF);
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pixmap.fill(Qt::transparent);
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QPainter painter(&pixmap);
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icon.paint(&painter, QRect(0, 0, iconSize.width(), iconSize.height()));
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painter.end();
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PDFColorConvertor convertor;
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convertor.setMode(PDFColorConvertor::Mode::InvertedColors);
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QImage image = pixmap.toImage();
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image = convertor.convert(image);
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pixmap = QPixmap::fromImage(image);
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return QIcon(pixmap);
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}
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void PDFWidgetUtils::checkMenuAccessibility(QWidget* widget)
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{
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QList<QMenu*> menus = widget->findChildren<QMenu*>();
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for (QMenu* menu : menus)
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{
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checkMenuAccessibility(menu);
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}
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}
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void PDFWidgetUtils::checkMenuAccessibility(QMenu* menu)
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{
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QStringList actionsDuplicities;
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QStringList actionsWithNoAmpersands;
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std::map<QChar, std::set<QAction*>> actions;
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for (QAction* action : menu->actions())
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{
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if (action->isSeparator())
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{
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continue;
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}
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if (QMenu* submenu = action->menu())
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{
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checkMenuAccessibility(submenu);
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}
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QString text = action->text();
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int i = text.indexOf(QChar('&'));
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if (text.isEmpty())
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{
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continue;
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}
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if (i == -1)
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{
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actionsWithNoAmpersands << text;
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}
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else
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{
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QString accesibilityChar = text.mid(i + 1, 1);
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if (accesibilityChar.size() == 1)
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{
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actions[accesibilityChar.front().toUpper()].insert(action);
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}
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}
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}
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for (const auto& actionItem : actions)
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{
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if (actionItem.second.size() > 1)
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{
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QStringList actionTexts;
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for (QAction* action : actionItem.second)
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{
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actionTexts << action->text();
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}
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actionsDuplicities << QString("'%1': Duplicities = '%2'").arg(QString(actionItem.first), actionTexts.join("', '"));
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}
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}
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QStringList errors;
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errors.append(std::move(actionsDuplicities));
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errors.append(std::move(actionsWithNoAmpersands));
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if (!errors.isEmpty())
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{
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QMessageBox::warning(nullptr, "Accesibility Check", errors.join("<br>"));
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}
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}
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} // namespace pdf
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