404 lines
17 KiB
C++
404 lines
17 KiB
C++
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// vim: set tabstop=4 shiftwidth=4 expandtab:
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/*
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Gwenview: an image viewer
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SPDX-FileCopyrightText: 2011 Aurélien Gâteau <agateau@kde.org>
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SPDX-FileCopyrightText: 2021 Noah Davis <noahadvs@gmail.com>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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// Self
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#include "documentviewcontroller.h"
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// Local
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#include "documentview.h"
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#include "gwenview_lib_debug.h"
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#include <lib/documentview/abstractrasterimageviewtool.h>
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#include <lib/gwenviewconfig.h>
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#include <lib/slidecontainer.h>
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#include <lib/zoomwidget.h>
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// KF
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#include <KActionCategory>
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#include <KColorUtils>
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#include <KLocalizedString>
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// Qt
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#include <QAction>
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#include <QActionGroup>
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#include <QApplication>
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#include <QPainter>
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namespace Gwenview
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{
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struct DocumentViewControllerPrivate {
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DocumentViewController *q = nullptr;
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KActionCollection *mActionCollection = nullptr;
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DocumentView *mView = nullptr;
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ZoomWidget *mZoomWidget = nullptr;
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SlideContainer *mToolContainer = nullptr;
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QAction *mZoomToFitAction = nullptr;
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QAction *mZoomToFillAction = nullptr;
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QAction *mActualSizeAction = nullptr;
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QAction *mZoomInAction = nullptr;
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QAction *mZoomOutAction = nullptr;
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QAction *mToggleBirdEyeViewAction = nullptr;
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QAction *mBackgroundColorModeAuto = nullptr;
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QAction *mBackgroundColorModeLight = nullptr;
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QAction *mBackgroundColorModeNeutral = nullptr;
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QAction *mBackgroundColorModeDark = nullptr;
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QList<QAction *> mActions;
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void setupActions()
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{
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auto view = new KActionCategory(i18nc("@title actions category - means actions changing smth in interface", "View"), mActionCollection);
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mZoomToFitAction = view->addAction(QStringLiteral("view_zoom_to_fit"));
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view->collection()->setDefaultShortcut(mZoomToFitAction, Qt::Key_F);
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mZoomToFitAction->setCheckable(true);
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mZoomToFitAction->setChecked(true);
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mZoomToFitAction->setText(i18n("Zoom to Fit"));
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mZoomToFitAction->setIcon(QIcon::fromTheme(QStringLiteral("zoom-fit-best")));
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mZoomToFitAction->setIconText(i18nc("@action:button Zoom to fit, shown in status bar, keep it short please", "Fit"));
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mZoomToFitAction->setToolTip(i18nc("@info:tooltip", "Fit image into the viewing area"));
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// clang-format off
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// i18n: "a previous zoom value" is worded in such an unclear way because it can either be the zoom value for the image viewed previously or the
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// zoom value that was used the last time this same image was viewed. Being more clear about this isn't really necessary here so I kept it short
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// but a more elaborate translation would also be fine.
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// The text "in the settings" is supposed to sound like clicking it opens the settings.
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mZoomToFitAction->setWhatsThis(xi18nc("@info:whatsthis, %1 the action's text", "<para>This fits the image into the available viewing area:<list>"
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"<item>Images that are bigger than the viewing area are displayed at a smaller size so they fit.</item>"
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"<item>Images that are smaller than the viewing area are displayed at their normal size. If smaller images should instead use all of "
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"the available viewing area, turn on <emphasis>Enlarge smaller images</emphasis> <link url='%2'>in the settings</link>.</item></list></para>"
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"<para>If \"%1\" is already enabled, pressing it again will switch it off and the image will be displayed at its normal size instead.</para>"
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"<para>\"%1\" is the default zoom mode for images. This can be changed so images are displayed at a previous zoom value instead "
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"<link url='%2'>in the settings</link>.</para>", mZoomToFitAction->iconText(), QStringLiteral("gwenview:/config/imageview")));
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// Keep the previous link address in sync with MainWindow::Private::SettingsOpenerHelper::eventFilter().
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// clang-format on
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mZoomToFillAction = view->addAction(QStringLiteral("view_zoom_to_fill"));
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view->collection()->setDefaultShortcut(mZoomToFillAction, Qt::SHIFT | Qt::Key_F);
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mZoomToFillAction->setCheckable(true);
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mZoomToFillAction->setText(i18n("Zoom to fill window by fitting to width or height"));
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mZoomToFillAction->setIcon(QIcon::fromTheme(QStringLiteral("zoom-fit-best")));
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mZoomToFillAction->setIconText(i18nc("@action:button Zoom to fill (fit width or height), shown in status bar, keep it short please", "Fill"));
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mActualSizeAction = view->addAction(KStandardAction::ActualSize);
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mActualSizeAction->setCheckable(true);
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mActualSizeAction->setIcon(QIcon::fromTheme(QStringLiteral("zoom-original")));
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mActualSizeAction->setIconText(i18nc("Original image size percent value", "100%"));
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mZoomInAction = view->addAction(KStandardAction::ZoomIn);
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mZoomOutAction = view->addAction(KStandardAction::ZoomOut);
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mToggleBirdEyeViewAction = view->addAction(QStringLiteral("view_toggle_birdeyeview"));
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mToggleBirdEyeViewAction->setCheckable(true);
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mToggleBirdEyeViewAction->setChecked(GwenviewConfig::birdEyeViewEnabled());
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mToggleBirdEyeViewAction->setText(i18n("Show Bird's Eye View When Zoomed In"));
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mToggleBirdEyeViewAction->setIcon(QIcon::fromTheme(QStringLiteral("zoom")));
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mToggleBirdEyeViewAction->setEnabled(mView != nullptr);
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mBackgroundColorModeAuto = view->addAction(QStringLiteral("view_background_colormode_auto"));
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mBackgroundColorModeAuto->setCheckable(true);
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mBackgroundColorModeAuto->setChecked(GwenviewConfig::backgroundColorMode() == DocumentView::BackgroundColorMode::Auto);
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mBackgroundColorModeAuto->setText(i18nc("@action", "Follow color scheme"));
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mBackgroundColorModeAuto->setEnabled(mView != nullptr);
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mBackgroundColorModeLight = view->addAction(QStringLiteral("view_background_colormode_light"));
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mBackgroundColorModeLight->setCheckable(true);
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mBackgroundColorModeLight->setChecked(GwenviewConfig::backgroundColorMode() == DocumentView::BackgroundColorMode::Light);
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mBackgroundColorModeLight->setText(i18nc("@action", "Light Mode"));
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mBackgroundColorModeLight->setEnabled(mView != nullptr);
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mBackgroundColorModeNeutral = view->addAction(QStringLiteral("view_background_colormode_neutral"));
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mBackgroundColorModeNeutral->setCheckable(true);
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mBackgroundColorModeNeutral->setChecked(GwenviewConfig::backgroundColorMode() == DocumentView::BackgroundColorMode::Neutral);
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mBackgroundColorModeNeutral->setText(i18nc("@action", "Neutral Mode"));
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mBackgroundColorModeNeutral->setEnabled(mView != nullptr);
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mBackgroundColorModeDark = view->addAction(QStringLiteral("view_background_colormode_dark"));
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mBackgroundColorModeDark->setCheckable(true);
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mBackgroundColorModeDark->setChecked(GwenviewConfig::backgroundColorMode() == DocumentView::BackgroundColorMode::Dark);
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mBackgroundColorModeDark->setText(i18nc("@action", "Dark Mode"));
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mBackgroundColorModeDark->setEnabled(mView != nullptr);
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setBackgroundColorModeIcons(mBackgroundColorModeAuto, mBackgroundColorModeLight, mBackgroundColorModeNeutral, mBackgroundColorModeDark);
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auto actionGroup = new QActionGroup(q);
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actionGroup->addAction(mBackgroundColorModeAuto);
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actionGroup->addAction(mBackgroundColorModeLight);
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actionGroup->addAction(mBackgroundColorModeNeutral);
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actionGroup->addAction(mBackgroundColorModeDark);
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actionGroup->setExclusive(true);
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mActions << mZoomToFitAction << mActualSizeAction << mZoomInAction << mZoomOutAction << mZoomToFillAction << mToggleBirdEyeViewAction
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<< mBackgroundColorModeAuto << mBackgroundColorModeLight << mBackgroundColorModeNeutral << mBackgroundColorModeDark;
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}
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void setBackgroundColorModeIcons(QAction *autoAction, QAction *lightAction, QAction *neutralAction, QAction *darkAction) const
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{
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const bool usingLightTheme = qApp->palette().base().color().lightness() > qApp->palette().text().color().lightness();
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const int pixMapWidth(16 * qApp->devicePixelRatio()); // Default icon size in menus is 16 but on toolbars is 22. The icon will only show up in QMenus
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// unless a user adds the action to their toolbar so we go for 16.
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QPixmap lightPixmap(pixMapWidth, pixMapWidth);
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QPixmap neutralPixmap(pixMapWidth, pixMapWidth);
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QPixmap darkPixmap(pixMapWidth, pixMapWidth);
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QPixmap autoPixmap(pixMapWidth, pixMapWidth);
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// Wipe them clean. If we don't do this, the background will have all sorts of weird artifacts.
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lightPixmap.fill(Qt::transparent);
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neutralPixmap.fill(Qt::transparent);
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darkPixmap.fill(Qt::transparent);
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autoPixmap.fill(Qt::transparent);
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const QColor &lightColor = usingLightTheme ? qApp->palette().base().color() : qApp->palette().text().color();
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const QColor &darkColor = usingLightTheme ? qApp->palette().text().color() : qApp->palette().base().color();
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const QColor neutralColor = KColorUtils::mix(lightColor, darkColor, 0.5);
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paintPixmap(lightPixmap, lightColor);
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paintPixmap(neutralPixmap, neutralColor);
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paintPixmap(darkPixmap, darkColor);
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paintAutoPixmap(autoPixmap, lightColor, darkColor);
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autoAction->setIcon(autoPixmap);
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lightAction->setIcon(lightPixmap);
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neutralAction->setIcon(neutralPixmap);
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darkAction->setIcon(darkPixmap);
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}
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void paintPixmap(QPixmap &pixmap, const QColor &color) const
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{
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QPainter painter;
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painter.begin(&pixmap);
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painter.setRenderHint(QPainter::Antialiasing);
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// QPainter isn't good at drawing lines that are exactly 1px thick.
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const qreal penWidth = qApp->devicePixelRatio() != 1 ? qApp->devicePixelRatio() : qApp->devicePixelRatio() + 0.001;
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const QColor penColor = KColorUtils::mix(color, qApp->palette().text().color(), 0.3);
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const QPen pen(penColor, penWidth);
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const qreal margin = pen.widthF() / 2.0;
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const QMarginsF penMargins(margin, margin, margin, margin);
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const QRectF rect = pixmap.rect();
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painter.setBrush(color);
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painter.setPen(pen);
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painter.drawEllipse(rect.marginsRemoved(penMargins));
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painter.end();
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}
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void paintAutoPixmap(QPixmap &pixmap, const QColor &lightColor, const QColor &darkColor) const
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{
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QPainter painter;
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painter.begin(&pixmap);
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painter.setRenderHint(QPainter::Antialiasing);
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// QPainter isn't good at drawing lines that are exactly 1px thick.
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const qreal penWidth = qApp->devicePixelRatio() != 1 ? qApp->devicePixelRatio() : qApp->devicePixelRatio() + 0.001;
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const QColor lightPenColor = KColorUtils::mix(lightColor, darkColor, 0.3);
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const QPen lightPen(lightPenColor, penWidth);
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const QColor darkPenColor = KColorUtils::mix(darkColor, lightColor, 0.3);
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const QPen darkPen(darkPenColor, penWidth);
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const qreal margin = lightPen.widthF() / 2.0;
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const QMarginsF penMargins(margin, margin, margin, margin);
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QRectF rect = pixmap.rect();
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rect = rect.marginsRemoved(penMargins);
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int lightStartAngle = 45 * 16;
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int lightSpanAngle = 180 * 16;
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int darkStartAngle = -135 * 16;
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int darkSpanAngle = 180 * 16;
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painter.setBrush(lightColor);
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painter.setPen(lightPen);
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painter.drawChord(rect, lightStartAngle, lightSpanAngle);
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painter.setBrush(darkColor);
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painter.setPen(darkPen);
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painter.drawChord(rect, darkStartAngle, darkSpanAngle);
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painter.end();
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}
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void connectZoomWidget()
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{
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if (!mZoomWidget || !mView) {
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return;
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}
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// from mZoomWidget to mView
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QObject::connect(mZoomWidget, &ZoomWidget::zoomChanged, mView, &DocumentView::setZoom);
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// from mView to mZoomWidget
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QObject::connect(mView, &DocumentView::minimumZoomChanged, mZoomWidget, &ZoomWidget::setMinimumZoom);
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QObject::connect(mView, &DocumentView::zoomChanged, mZoomWidget, &ZoomWidget::setZoom);
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mZoomWidget->setMinimumZoom(mView->minimumZoom());
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mZoomWidget->setZoom(mView->zoom());
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}
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void updateZoomWidgetVisibility()
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{
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if (!mZoomWidget) {
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return;
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}
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mZoomWidget->setVisible(mView && mView->canZoom());
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}
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void updateActions()
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{
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const bool enabled = mView && mView->isVisible() && mView->canZoom();
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for (QAction *action : qAsConst(mActions)) {
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action->setEnabled(enabled);
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}
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}
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};
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DocumentViewController::DocumentViewController(KActionCollection *actionCollection, QObject *parent)
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: QObject(parent)
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, d(new DocumentViewControllerPrivate)
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{
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d->q = this;
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d->mActionCollection = actionCollection;
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d->mView = nullptr;
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d->mZoomWidget = nullptr;
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d->mToolContainer = nullptr;
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d->setupActions();
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}
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DocumentViewController::~DocumentViewController()
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{
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delete d;
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}
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void DocumentViewController::setView(DocumentView *view)
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{
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// Forget old view
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if (d->mView) {
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disconnect(d->mView, nullptr, this, nullptr);
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for (QAction *action : qAsConst(d->mActions)) {
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disconnect(action, nullptr, d->mView, nullptr);
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}
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disconnect(d->mBackgroundColorModeAuto, &QAction::triggered, this, nullptr);
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disconnect(d->mBackgroundColorModeLight, &QAction::triggered, this, nullptr);
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disconnect(d->mBackgroundColorModeNeutral, &QAction::triggered, this, nullptr);
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disconnect(d->mBackgroundColorModeDark, &QAction::triggered, this, nullptr);
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disconnect(d->mZoomWidget, nullptr, d->mView, nullptr);
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}
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// Connect new view
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d->mView = view;
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if (!d->mView) {
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return;
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}
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connect(d->mView, &DocumentView::adapterChanged, this, &DocumentViewController::slotAdapterChanged);
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connect(d->mView, &DocumentView::zoomToFitChanged, this, &DocumentViewController::updateZoomToFitActionFromView);
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connect(d->mView, &DocumentView::zoomToFillChanged, this, &DocumentViewController::updateZoomToFillActionFromView);
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connect(d->mView, &DocumentView::currentToolChanged, this, &DocumentViewController::updateTool);
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connect(d->mZoomToFitAction, &QAction::triggered, d->mView, &DocumentView::toggleZoomToFit);
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connect(d->mZoomToFillAction, &QAction::triggered, d->mView, &DocumentView::toggleZoomToFill);
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connect(d->mActualSizeAction, &QAction::triggered, d->mView, &DocumentView::zoomActualSize);
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connect(d->mZoomInAction, SIGNAL(triggered()), d->mView, SLOT(zoomIn()));
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connect(d->mZoomOutAction, SIGNAL(triggered()), d->mView, SLOT(zoomOut()));
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connect(d->mToggleBirdEyeViewAction, &QAction::triggered, d->mView, &DocumentView::toggleBirdEyeView);
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connect(d->mBackgroundColorModeAuto, &QAction::triggered, this, [this]() {
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d->mView->setBackgroundColorMode(DocumentView::BackgroundColorMode::Auto);
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qApp->paletteChanged(qApp->palette());
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});
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connect(d->mBackgroundColorModeLight, &QAction::triggered, this, [this]() {
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d->mView->setBackgroundColorMode(DocumentView::BackgroundColorMode::Light);
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qApp->paletteChanged(qApp->palette());
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});
|
||
|
|
connect(d->mBackgroundColorModeNeutral, &QAction::triggered, this, [this]() {
|
||
|
|
d->mView->setBackgroundColorMode(DocumentView::BackgroundColorMode::Neutral);
|
||
|
|
qApp->paletteChanged(qApp->palette());
|
||
|
|
});
|
||
|
|
connect(d->mBackgroundColorModeDark, &QAction::triggered, this, [this]() {
|
||
|
|
d->mView->setBackgroundColorMode(DocumentView::BackgroundColorMode::Dark);
|
||
|
|
qApp->paletteChanged(qApp->palette());
|
||
|
|
});
|
||
|
|
|
||
|
|
d->updateActions();
|
||
|
|
updateZoomToFitActionFromView();
|
||
|
|
updateZoomToFillActionFromView();
|
||
|
|
updateTool();
|
||
|
|
|
||
|
|
// Sync zoom widget
|
||
|
|
d->connectZoomWidget();
|
||
|
|
d->updateZoomWidgetVisibility();
|
||
|
|
}
|
||
|
|
|
||
|
|
DocumentView *DocumentViewController::view() const
|
||
|
|
{
|
||
|
|
return d->mView;
|
||
|
|
}
|
||
|
|
|
||
|
|
void DocumentViewController::setZoomWidget(ZoomWidget *widget)
|
||
|
|
{
|
||
|
|
d->mZoomWidget = widget;
|
||
|
|
|
||
|
|
d->mZoomWidget->setActions(d->mZoomToFitAction, d->mActualSizeAction, d->mZoomInAction, d->mZoomOutAction, d->mZoomToFillAction);
|
||
|
|
|
||
|
|
d->mZoomWidget->setMaximumZoom(qreal(DocumentView::MaximumZoom));
|
||
|
|
|
||
|
|
d->connectZoomWidget();
|
||
|
|
d->updateZoomWidgetVisibility();
|
||
|
|
}
|
||
|
|
|
||
|
|
ZoomWidget *DocumentViewController::zoomWidget() const
|
||
|
|
{
|
||
|
|
return d->mZoomWidget;
|
||
|
|
}
|
||
|
|
|
||
|
|
void DocumentViewController::slotAdapterChanged()
|
||
|
|
{
|
||
|
|
d->updateActions();
|
||
|
|
d->updateZoomWidgetVisibility();
|
||
|
|
}
|
||
|
|
|
||
|
|
void DocumentViewController::updateZoomToFitActionFromView()
|
||
|
|
{
|
||
|
|
d->mZoomToFitAction->setChecked(d->mView->zoomToFit());
|
||
|
|
}
|
||
|
|
|
||
|
|
void DocumentViewController::updateZoomToFillActionFromView()
|
||
|
|
{
|
||
|
|
d->mZoomToFillAction->setChecked(d->mView->zoomToFill());
|
||
|
|
}
|
||
|
|
|
||
|
|
void DocumentViewController::updateTool()
|
||
|
|
{
|
||
|
|
if (!d->mToolContainer) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
AbstractRasterImageViewTool *tool = d->mView->currentTool();
|
||
|
|
if (tool && tool->widget()) {
|
||
|
|
// Use a QueuedConnection to ensure the size of the view has been
|
||
|
|
// updated by the time the slot is called.
|
||
|
|
connect(d->mToolContainer, &SlideContainer::slidedIn, tool, &AbstractRasterImageViewTool::onWidgetSlidedIn, Qt::QueuedConnection);
|
||
|
|
d->mToolContainer->setContent(tool->widget());
|
||
|
|
d->mToolContainer->slideIn();
|
||
|
|
} else {
|
||
|
|
d->mToolContainer->slideOut();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void DocumentViewController::reset()
|
||
|
|
{
|
||
|
|
setView(nullptr);
|
||
|
|
d->updateActions();
|
||
|
|
}
|
||
|
|
|
||
|
|
void DocumentViewController::setToolContainer(SlideContainer *container)
|
||
|
|
{
|
||
|
|
d->mToolContainer = container;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace
|
||
|
|
|
||
|
|
#include "moc_documentviewcontroller.cpp"
|
