diff options
Diffstat (limited to 'launcher/ui/widgets')
| -rw-r--r-- | launcher/ui/widgets/ProjectDescriptionPage.cpp | 23 | ||||
| -rw-r--r-- | launcher/ui/widgets/ProjectDescriptionPage.h | 32 | ||||
| -rw-r--r-- | launcher/ui/widgets/ProjectItem.cpp | 39 | ||||
| -rw-r--r-- | launcher/ui/widgets/VariableSizedImageObject.cpp | 127 | ||||
| -rw-r--r-- | launcher/ui/widgets/VariableSizedImageObject.h | 64 |
5 files changed, 278 insertions, 7 deletions
diff --git a/launcher/ui/widgets/ProjectDescriptionPage.cpp b/launcher/ui/widgets/ProjectDescriptionPage.cpp new file mode 100644 index 00000000..c7e79a17 --- /dev/null +++ b/launcher/ui/widgets/ProjectDescriptionPage.cpp @@ -0,0 +1,23 @@ +#include "ProjectDescriptionPage.h" + +#include "VariableSizedImageObject.h" + +#include <QDebug> + +ProjectDescriptionPage::ProjectDescriptionPage(QWidget* parent) : QTextBrowser(parent), m_image_text_object(new VariableSizedImageObject) +{ + m_image_text_object->setParent(this); + document()->documentLayout()->registerHandler(QTextFormat::ImageObject, m_image_text_object.get()); +} + +void ProjectDescriptionPage::setMetaEntry(QString entry) +{ + if (m_image_text_object) + m_image_text_object->setMetaEntry(entry); +} + +void ProjectDescriptionPage::flush() +{ + if (m_image_text_object) + m_image_text_object->flush(); +} diff --git a/launcher/ui/widgets/ProjectDescriptionPage.h b/launcher/ui/widgets/ProjectDescriptionPage.h new file mode 100644 index 00000000..3dd85302 --- /dev/null +++ b/launcher/ui/widgets/ProjectDescriptionPage.h @@ -0,0 +1,32 @@ +#pragma once + +#include <QTextBrowser> + +#include "QObjectPtr.h" + +QT_BEGIN_NAMESPACE +class VariableSizedImageObject; +QT_END_NAMESPACE + +/** This subclasses QTextBrowser to provide additional capabilities + * to it, like allowing for images to be shown. + */ +class ProjectDescriptionPage final : public QTextBrowser { + Q_OBJECT + + public: + ProjectDescriptionPage(QWidget* parent = nullptr); + + void setMetaEntry(QString entry); + + public slots: + /** Flushes the current processing happening in the page. + * + * Should be called when changing the page's content entirely, to + * prevent old tasks from changing the new content. + */ + void flush(); + + private: + shared_qobject_ptr<VariableSizedImageObject> m_image_text_object; +}; diff --git a/launcher/ui/widgets/ProjectItem.cpp b/launcher/ui/widgets/ProjectItem.cpp index 01be88d9..d1ff9dbc 100644 --- a/launcher/ui/widgets/ProjectItem.cpp +++ b/launcher/ui/widgets/ProjectItem.cpp @@ -51,6 +51,8 @@ void ProjectItemDelegate::paint(QPainter* painter, const QStyleOptionViewItem& o auto remaining_width = rect.width() - icon_width - 2 * icon_x_margin; rect.setRect(rect.x() + icon_width + 2 * icon_x_margin, rect.y(), remaining_width, rect.height()); + int title_height = 0; + { // Title painting auto title = index.data(UserDataTypes::TITLE).toString(); @@ -66,8 +68,10 @@ void ProjectItemDelegate::paint(QPainter* painter, const QStyleOptionViewItem& o font.setPointSize(font.pointSize() + 2); painter->setFont(font); + title_height = QFontMetrics(font).height(); + // On the top, aligned to the left after the icon - painter->drawText(rect.x(), rect.y() + QFontMetrics(font).height(), title); + painter->drawText(rect.x(), rect.y() + title_height, title); painter->restore(); } @@ -82,17 +86,38 @@ void ProjectItemDelegate::paint(QPainter* painter, const QStyleOptionViewItem& o // Get first line unconditionally description = cut_text.first().second; + auto num_lines = 1; + // Get second line, elided if needed if (cut_text.size() > 1) { - if (cut_text.size() > 2) - description += opt.fontMetrics.elidedText(cut_text.at(1).second, opt.textElideMode, cut_text.at(1).first); - else - description += cut_text.at(1).second; + // 2.5x so because there should be some margin left from the 2x so things don't get too squishy. + if (rect.height() - title_height <= 2.5 * opt.fontMetrics.height()) { + // If there's not enough space, show only a single line, elided. + description = opt.fontMetrics.elidedText(description, opt.textElideMode, cut_text.at(0).first); + } else { + if (cut_text.size() > 2) { + description += opt.fontMetrics.elidedText(cut_text.at(1).second, opt.textElideMode, cut_text.at(1).first); + } else { + description += cut_text.at(1).second; + } + num_lines += 1; + } } + int description_x = rect.x(); + + + // Have the y-value be set based on the number of lines in the description, to centralize the + // description text with the space between the base and the title. + int description_y = rect.y() + title_height + (rect.height() - title_height) / 2; + if (num_lines == 1) + description_y -= opt.fontMetrics.height() / 2; + else + description_y -= opt.fontMetrics.height(); + // On the bottom, aligned to the left after the icon, and featuring at most two lines of text (with some margin space to spare) - painter->drawText(rect.x(), rect.y() + rect.height() - 2.2 * opt.fontMetrics.height(), remaining_width, - 2 * opt.fontMetrics.height(), Qt::TextWordWrap, description); + painter->drawText(description_x, description_y, remaining_width, + cut_text.size() * opt.fontMetrics.height(), Qt::TextWordWrap, description); } painter->restore(); diff --git a/launcher/ui/widgets/VariableSizedImageObject.cpp b/launcher/ui/widgets/VariableSizedImageObject.cpp new file mode 100644 index 00000000..e57f7e95 --- /dev/null +++ b/launcher/ui/widgets/VariableSizedImageObject.cpp @@ -0,0 +1,127 @@ +// SPDX-License-Identifier: GPL-3.0-only +/* + * PolyMC - Minecraft Launcher + * Copyright (c) 2022 flowln <flowlnlnln@gmail.com> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, version 3. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include "VariableSizedImageObject.h" + +#include <QAbstractTextDocumentLayout> +#include <QDebug> +#include <QPainter> +#include <QTextObject> + +#include "Application.h" + +#include "net/NetJob.h" + +enum FormatProperties { ImageData = QTextFormat::UserProperty + 1 }; + +QSizeF VariableSizedImageObject::intrinsicSize(QTextDocument* doc, int posInDocument, const QTextFormat& format) +{ + Q_UNUSED(posInDocument); + + auto image = qvariant_cast<QImage>(format.property(ImageData)); + auto size = image.size(); + + // Get the width of the text content to make the image similar sized. + // doc->textWidth() includes the margin, so we need to remove it. + auto doc_width = doc->textWidth() - 2 * doc->documentMargin(); + + if (size.width() > doc_width) + size *= doc_width / (double)size.width(); + + return { size }; +} +void VariableSizedImageObject::drawObject(QPainter* painter, + const QRectF& rect, + QTextDocument* doc, + int posInDocument, + const QTextFormat& format) +{ + if (!format.hasProperty(ImageData)) { + QUrl image_url{ qvariant_cast<QString>(format.property(QTextFormat::ImageName)) }; + if (m_fetching_images.contains(image_url)) + return; + + loadImage(doc, image_url, posInDocument); + return; + } + + auto image = qvariant_cast<QImage>(format.property(ImageData)); + + painter->setRenderHint(QPainter::RenderHint::SmoothPixmapTransform); + painter->drawImage(rect, image); +} + +void VariableSizedImageObject::flush() +{ + m_fetching_images.clear(); +} + +void VariableSizedImageObject::parseImage(QTextDocument* doc, QImage image, int posInDocument) +{ + QTextCursor cursor(doc); + cursor.setPosition(posInDocument); + cursor.setKeepPositionOnInsert(true); + + auto image_char_format = cursor.charFormat(); + + image_char_format.setObjectType(QTextFormat::ImageObject); + image_char_format.setProperty(ImageData, image); + + // Qt doesn't allow us to modify the properties of an existing object in the document. + // So we remove the old one and add the new one with the ImageData property set. + cursor.deleteChar(); + cursor.insertText(QString(QChar::ObjectReplacementCharacter), image_char_format); +} + +void VariableSizedImageObject::loadImage(QTextDocument* doc, const QUrl& source, int posInDocument) +{ + m_fetching_images.insert(source); + + MetaEntryPtr entry = APPLICATION->metacache()->resolveEntry( + m_meta_entry, + QString("images/%1").arg(QString(QCryptographicHash::hash(source.toEncoded(), QCryptographicHash::Algorithm::Sha1).toHex()))); + + auto job = new NetJob(QString("Load Image: %1").arg(source.fileName()), APPLICATION->network()); + job->addNetAction(Net::Download::makeCached(source, entry)); + + auto full_entry_path = entry->getFullPath(); + auto source_url = source; + connect(job, &NetJob::succeeded, [this, doc, full_entry_path, source_url, posInDocument] { + qDebug() << "Loaded resource at" << full_entry_path; + + // If we flushed, don't proceed. + if (!m_fetching_images.contains(source_url)) + return; + + QImage image(full_entry_path); + doc->addResource(QTextDocument::ImageResource, source_url, image); + + parseImage(doc, image, posInDocument); + + // This size hack is needed to prevent the content from being laid out in an area smaller + // than the total width available (weird). + auto size = doc->pageSize(); + doc->adjustSize(); + doc->setPageSize(size); + + m_fetching_images.remove(source_url); + }); + connect(job, &NetJob::finished, job, &NetJob::deleteLater); + + job->start(); +} diff --git a/launcher/ui/widgets/VariableSizedImageObject.h b/launcher/ui/widgets/VariableSizedImageObject.h new file mode 100644 index 00000000..137487ee --- /dev/null +++ b/launcher/ui/widgets/VariableSizedImageObject.h @@ -0,0 +1,64 @@ +// SPDX-License-Identifier: GPL-3.0-only +/* + * PolyMC - Minecraft Launcher + * Copyright (c) 2022 flowln <flowlnlnln@gmail.com> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, version 3. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#pragma once + +#include <QObject> +#include <QString> +#include <QTextObjectInterface> +#include <QUrl> + +/** Custom image text object to be used instead of the normal one in ProjectDescriptionPage. + * + * Why? Because we want to re-scale images dynamically based on the document's size, in order to + * not have images being weirdly cropped out in different resolutions. + */ +class VariableSizedImageObject final : public QObject, public QTextObjectInterface { + Q_OBJECT + Q_INTERFACES(QTextObjectInterface) + + public: + QSizeF intrinsicSize(QTextDocument* doc, int posInDocument, const QTextFormat& format) override; + void drawObject(QPainter* painter, const QRectF& rect, QTextDocument* doc, int posInDocument, const QTextFormat& format) override; + + void setMetaEntry(QString meta_entry) { m_meta_entry = meta_entry; } + + public slots: + /** Stops all currently loading images from modifying the document. + * + * This does not stop the ongoing network tasks, it only prevents their result + * from impacting the document any further. + */ + void flush(); + + private: + /** Adds the image to the document, in the given position. + */ + void parseImage(QTextDocument* doc, QImage image, int posInDocument); + + /** Loads an image from an external source, and adds it to the document. + * + * This uses m_meta_entry to cache the image. + */ + void loadImage(QTextDocument* doc, const QUrl& source, int posInDocument); + + private: + QString m_meta_entry; + + QSet<QUrl> m_fetching_images; +}; |