mirror of
https://github.com/RetroShare/RetroShare.git
synced 2025-02-12 21:11:32 -05:00
b96fecfcbb
* Added gif & webp for RichtextEditor picture attachments * Attempt to fix attached picture layout issue on Card View
617 lines
20 KiB
C++
617 lines
20 KiB
C++
/*******************************************************************************
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* util/RichTextEdit.cpp *
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* *
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* Copyright (c) 2019 Retroshare Team <retroshare.project@gmail.com> *
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* *
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* This program is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU Affero General Public License as *
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* published by the Free Software Foundation, either version 3 of the *
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* License, or (at your option) any later version. *
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* *
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* This program 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 Affero General Public License for more details. *
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* *
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* You should have received a copy of the GNU Affero General Public License *
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* along with this program. If not, see <https://www.gnu.org/licenses/>. *
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* *
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*******************************************************************************/
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#include "RichTextEdit.h"
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#include <QApplication>
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#include <QClipboard>
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#include <QMimeData>
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#include <QFontDatabase>
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#include <QInputDialog>
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#include <QColorDialog>
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#include <QTextList>
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#include <QtDebug>
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#include <QFileDialog>
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#include <QImageReader>
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#include <QSettings>
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#include <QBuffer>
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#include <QUrl>
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#include <QPlainTextEdit>
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#include <QMenu>
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#include <QDialog>
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#include <QTextDocumentFragment>
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#include "util/misc.h"
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#include "util/HandleRichText.h"
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static const uint32_t MAX_ALLOWED_GXS_MESSAGE_SIZE = 199000;
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RichTextEdit::RichTextEdit(QWidget *parent) : QWidget(parent) {
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setupUi(this);
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m_lastBlockList = 0;
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f_textedit->setTabStopWidth(40);
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connect(f_textedit, SIGNAL(currentCharFormatChanged(QTextCharFormat)),
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this, SLOT(slotCurrentCharFormatChanged(QTextCharFormat)));
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connect(f_textedit, SIGNAL(cursorPositionChanged()),
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this, SLOT(slotCursorPositionChanged()));
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m_fontsize_h1 = 18;
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m_fontsize_h2 = 16;
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m_fontsize_h3 = 14;
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m_fontsize_h4 = 12;
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fontChanged(f_textedit->font());
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bgColorChanged(f_textedit->textColor());
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// paragraph formatting
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m_paragraphItems << tr("Standard")
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<< tr("Heading 1")
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<< tr("Heading 2")
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<< tr("Heading 3")
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<< tr("Heading 4")
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<< tr("Monospace");
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f_paragraph->addItems(m_paragraphItems);
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connect(f_paragraph, SIGNAL(activated(int)),
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this, SLOT(textStyle(int)));
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// undo & redo
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f_undo->setShortcut(QKeySequence::Undo);
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f_redo->setShortcut(QKeySequence::Redo);
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connect(f_textedit->document(), SIGNAL(undoAvailable(bool)),
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f_undo, SLOT(setEnabled(bool)));
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connect(f_textedit->document(), SIGNAL(redoAvailable(bool)),
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f_redo, SLOT(setEnabled(bool)));
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f_undo->setEnabled(f_textedit->document()->isUndoAvailable());
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f_redo->setEnabled(f_textedit->document()->isRedoAvailable());
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connect(f_undo, SIGNAL(clicked()), f_textedit, SLOT(undo()));
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connect(f_redo, SIGNAL(clicked()), f_textedit, SLOT(redo()));
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// cut, copy & paste
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f_cut->setShortcut(QKeySequence::Cut);
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f_copy->setShortcut(QKeySequence::Copy);
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f_paste->setShortcut(QKeySequence::Paste);
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f_cut->setEnabled(false);
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f_copy->setEnabled(false);
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connect(f_cut, SIGNAL(clicked()), f_textedit, SLOT(cut()));
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connect(f_copy, SIGNAL(clicked()), f_textedit, SLOT(copy()));
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connect(f_paste, SIGNAL(clicked()), f_textedit, SLOT(paste()));
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connect(f_textedit, SIGNAL(copyAvailable(bool)), f_cut, SLOT(setEnabled(bool)));
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connect(f_textedit, SIGNAL(copyAvailable(bool)), f_copy, SLOT(setEnabled(bool)));
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#ifndef QT_NO_CLIPBOARD
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connect(QApplication::clipboard(), SIGNAL(dataChanged()), this, SLOT(slotClipboardDataChanged()));
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#endif
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// link
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f_link->setShortcut(Qt::CTRL + Qt::Key_L);
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connect(f_link, SIGNAL(clicked(bool)), this, SLOT(textLink(bool)));
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// bold, italic & underline
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f_bold->setShortcut(Qt::CTRL + Qt::Key_B);
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f_italic->setShortcut(Qt::CTRL + Qt::Key_I);
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f_underline->setShortcut(Qt::CTRL + Qt::Key_U);
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connect(f_bold, SIGNAL(clicked()), this, SLOT(textBold()));
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connect(f_italic, SIGNAL(clicked()), this, SLOT(textItalic()));
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connect(f_underline, SIGNAL(clicked()), this, SLOT(textUnderline()));
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connect(f_strikeout, SIGNAL(clicked()), this, SLOT(textStrikeout()));
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QAction *removeFormat = new QAction(tr("Remove character formatting"), this);
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removeFormat->setShortcut(QKeySequence("CTRL+M"));
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connect(removeFormat, SIGNAL(triggered()), this, SLOT(textRemoveFormat()));
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f_textedit->addAction(removeFormat);
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QAction *removeAllFormat = new QAction(tr("Remove all formatting"), this);
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connect(removeAllFormat, SIGNAL(triggered()), this, SLOT(textRemoveAllFormat()));
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f_textedit->addAction(removeAllFormat);
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QAction *textsource = new QAction(tr("Edit document source"), this);
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textsource->setShortcut(QKeySequence("CTRL+O"));
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connect(textsource, SIGNAL(triggered()), this, SLOT(textSource()));
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f_textedit->addAction(textsource);
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QMenu *menu = new QMenu(this);
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menu->addAction(removeAllFormat);
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menu->addAction(removeFormat);
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menu->addAction(textsource);
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f_menu->setMenu(menu);
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f_menu->setPopupMode(QToolButton::InstantPopup);
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// lists
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f_list_bullet->setShortcut(Qt::CTRL + Qt::Key_Minus);
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f_list_ordered->setShortcut(Qt::CTRL + Qt::Key_Equal);
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connect(f_list_bullet, SIGNAL(clicked(bool)), this, SLOT(listBullet(bool)));
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connect(f_list_ordered, SIGNAL(clicked(bool)), this, SLOT(listOrdered(bool)));
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// indentation
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f_indent_dec->setShortcut(Qt::CTRL + Qt::Key_Comma);
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f_indent_inc->setShortcut(Qt::CTRL + Qt::Key_Period);
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connect(f_indent_inc, SIGNAL(clicked()), this, SLOT(increaseIndentation()));
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connect(f_indent_dec, SIGNAL(clicked()), this, SLOT(decreaseIndentation()));
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// font size
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QFontDatabase db;
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foreach(int size, db.standardSizes())
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f_fontsize->addItem(QString::number(size));
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connect(f_fontsize, SIGNAL(activated(QString)),
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this, SLOT(textSize(QString)));
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f_fontsize->setCurrentIndex(f_fontsize->findText(QString::number(QApplication::font()
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.pointSize())));
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// text foreground color
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QPixmap pix(16, 16);
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pix.fill(QApplication::palette().foreground().color());
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f_fgcolor->setIcon(pix);
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connect(f_fgcolor, SIGNAL(clicked()), this, SLOT(textFgColor()));
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// text background color
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pix.fill(QApplication::palette().background().color());
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f_bgcolor->setIcon(pix);
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connect(f_bgcolor, SIGNAL(clicked()), this, SLOT(textBgColor()));
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// images
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connect(f_image, SIGNAL(clicked()), this, SLOT(insertImage()));
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// check message length
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connect(f_textedit, SIGNAL(textChanged()), this, SLOT(checkLength()));
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}
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void RichTextEdit::textSource() {
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QDialog *dialog = new QDialog(this);
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QPlainTextEdit *pte = new QPlainTextEdit(dialog);
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pte->setPlainText( f_textedit->toHtml() );
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QGridLayout *gl = new QGridLayout(dialog);
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gl->addWidget(pte,0,0,1,1);
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dialog->setWindowTitle(tr("Document source"));
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dialog->setMinimumWidth (400);
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dialog->setMinimumHeight(600);
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dialog->exec();
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f_textedit->setHtml(pte->toPlainText());
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delete dialog;
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}
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void RichTextEdit::textRemoveFormat() {
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QTextCharFormat fmt;
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fmt.setFontWeight(QFont::Normal);
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fmt.setFontUnderline (false);
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fmt.setFontStrikeOut (false);
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fmt.setFontItalic (false);
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fmt.setFontPointSize (9);
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// fmt.setFontFamily ("Helvetica");
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// fmt.setFontStyleHint (QFont::SansSerif);
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// fmt.setFontFixedPitch (true);
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f_bold ->setChecked(false);
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f_underline ->setChecked(false);
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f_italic ->setChecked(false);
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f_strikeout ->setChecked(false);
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f_fontsize ->setCurrentIndex(f_fontsize->findText("9"));
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// QTextBlockFormat bfmt = cursor.blockFormat();
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// bfmt->setIndent(0);
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fmt.clearBackground();
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mergeFormatOnWordOrSelection(fmt);
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}
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void RichTextEdit::textRemoveAllFormat() {
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f_bold ->setChecked(false);
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f_underline ->setChecked(false);
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f_italic ->setChecked(false);
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f_strikeout ->setChecked(false);
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f_fontsize ->setCurrentIndex(f_fontsize->findText("9"));
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QString text = f_textedit->toPlainText();
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f_textedit->setPlainText(text);
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}
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void RichTextEdit::textBold() {
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QTextCharFormat fmt;
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fmt.setFontWeight(f_bold->isChecked() ? QFont::Bold : QFont::Normal);
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mergeFormatOnWordOrSelection(fmt);
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}
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void RichTextEdit::focusInEvent(QFocusEvent *) {
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f_textedit->setFocus(Qt::TabFocusReason);
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}
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void RichTextEdit::textUnderline() {
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QTextCharFormat fmt;
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fmt.setFontUnderline(f_underline->isChecked());
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mergeFormatOnWordOrSelection(fmt);
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}
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void RichTextEdit::textItalic() {
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QTextCharFormat fmt;
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fmt.setFontItalic(f_italic->isChecked());
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mergeFormatOnWordOrSelection(fmt);
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}
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void RichTextEdit::textStrikeout() {
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QTextCharFormat fmt;
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fmt.setFontStrikeOut(f_strikeout->isChecked());
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mergeFormatOnWordOrSelection(fmt);
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}
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void RichTextEdit::textSize(const QString &p) {
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qreal pointSize = p.toFloat();
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if (p.toFloat() > 0) {
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QTextCharFormat fmt;
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fmt.setFontPointSize(pointSize);
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mergeFormatOnWordOrSelection(fmt);
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}
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}
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void RichTextEdit::textLink(bool checked) {
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bool unlink = false;
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QTextCharFormat fmt;
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if (checked) {
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QString url = f_textedit->currentCharFormat().anchorHref();
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bool ok;
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QString newUrl = QInputDialog::getText(this, tr("Create a link"),
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tr("Link URL:"), QLineEdit::Normal,
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url,
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&ok);
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if (ok) {
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fmt.setAnchor(true);
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fmt.setAnchorHref(newUrl);
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fmt.setForeground(QApplication::palette().color(QPalette::Link));
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fmt.setFontUnderline(true);
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} else {
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unlink = true;
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}
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} else {
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unlink = true;
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}
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if (unlink) {
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fmt.setAnchor(false);
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fmt.setForeground(QApplication::palette().color(QPalette::Text));
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fmt.setFontUnderline(false);
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}
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mergeFormatOnWordOrSelection(fmt);
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}
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void RichTextEdit::textStyle(int index) {
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QTextCursor cursor = f_textedit->textCursor();
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cursor.beginEditBlock();
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// standard
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if (!cursor.hasSelection()) {
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cursor.select(QTextCursor::BlockUnderCursor);
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}
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QTextCharFormat fmt;
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cursor.setCharFormat(fmt);
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f_textedit->setCurrentCharFormat(fmt);
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if (index == ParagraphHeading1
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|| index == ParagraphHeading2
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|| index == ParagraphHeading3
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|| index == ParagraphHeading4 ) {
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if (index == ParagraphHeading1) {
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fmt.setFontPointSize(m_fontsize_h1);
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}
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if (index == ParagraphHeading2) {
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fmt.setFontPointSize(m_fontsize_h2);
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}
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if (index == ParagraphHeading3) {
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fmt.setFontPointSize(m_fontsize_h3);
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}
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if (index == ParagraphHeading4) {
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fmt.setFontPointSize(m_fontsize_h4);
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}
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if (index == ParagraphHeading2 || index == ParagraphHeading4) {
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fmt.setFontItalic(true);
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}
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fmt.setFontWeight(QFont::Bold);
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}
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if (index == ParagraphMonospace) {
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fmt = cursor.charFormat();
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fmt.setFontFamily("Monospace");
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fmt.setFontStyleHint(QFont::Monospace);
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fmt.setFontFixedPitch(true);
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}
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cursor.setCharFormat(fmt);
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f_textedit->setCurrentCharFormat(fmt);
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cursor.endEditBlock();
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}
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void RichTextEdit::textFgColor() {
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QColor col = QColorDialog::getColor(f_textedit->textColor(), this);
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QTextCursor cursor = f_textedit->textCursor();
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if (!cursor.hasSelection()) {
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cursor.select(QTextCursor::WordUnderCursor);
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}
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QTextCharFormat fmt = cursor.charFormat();
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if (col.isValid()) {
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fmt.setForeground(col);
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} else {
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fmt.clearForeground();
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}
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cursor.setCharFormat(fmt);
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f_textedit->setCurrentCharFormat(fmt);
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fgColorChanged(col);
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}
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void RichTextEdit::textBgColor() {
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QColor col = QColorDialog::getColor(f_textedit->textBackgroundColor(), this);
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QTextCursor cursor = f_textedit->textCursor();
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if (!cursor.hasSelection()) {
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cursor.select(QTextCursor::WordUnderCursor);
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}
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QTextCharFormat fmt = cursor.charFormat();
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if (col.isValid()) {
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fmt.setBackground(col);
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} else {
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fmt.clearBackground();
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}
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cursor.setCharFormat(fmt);
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f_textedit->setCurrentCharFormat(fmt);
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bgColorChanged(col);
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}
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void RichTextEdit::listBullet(bool checked) {
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if (checked) {
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f_list_ordered->setChecked(false);
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}
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list(checked, QTextListFormat::ListDisc);
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}
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void RichTextEdit::listOrdered(bool checked) {
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if (checked) {
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f_list_bullet->setChecked(false);
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}
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list(checked, QTextListFormat::ListDecimal);
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}
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void RichTextEdit::list(bool checked, QTextListFormat::Style style) {
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QTextCursor cursor = f_textedit->textCursor();
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cursor.beginEditBlock();
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if (!checked) {
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QTextBlockFormat obfmt = cursor.blockFormat();
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QTextBlockFormat bfmt;
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bfmt.setIndent(obfmt.indent());
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cursor.setBlockFormat(bfmt);
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} else {
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QTextListFormat listFmt;
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if (cursor.currentList()) {
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listFmt = cursor.currentList()->format();
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}
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listFmt.setStyle(style);
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cursor.createList(listFmt);
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}
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cursor.endEditBlock();
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}
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void RichTextEdit::mergeFormatOnWordOrSelection(const QTextCharFormat &format) {
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QTextCursor cursor = f_textedit->textCursor();
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if (!cursor.hasSelection()) {
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cursor.select(QTextCursor::WordUnderCursor);
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}
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cursor.mergeCharFormat(format);
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f_textedit->mergeCurrentCharFormat(format);
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f_textedit->setFocus(Qt::TabFocusReason);
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}
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void RichTextEdit::slotCursorPositionChanged() {
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QTextList *l = f_textedit->textCursor().currentList();
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if (m_lastBlockList && (l == m_lastBlockList || (l != 0 && m_lastBlockList != 0
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&& l->format().style() == m_lastBlockList->format().style()))) {
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return;
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}
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m_lastBlockList = l;
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if (l) {
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QTextListFormat lfmt = l->format();
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if (lfmt.style() == QTextListFormat::ListDisc) {
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f_list_bullet->setChecked(true);
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f_list_ordered->setChecked(false);
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} else if (lfmt.style() == QTextListFormat::ListDecimal) {
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f_list_bullet->setChecked(false);
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f_list_ordered->setChecked(true);
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} else {
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f_list_bullet->setChecked(false);
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f_list_ordered->setChecked(false);
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}
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} else {
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f_list_bullet->setChecked(false);
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f_list_ordered->setChecked(false);
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}
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}
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void RichTextEdit::fontChanged(const QFont &f) {
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f_fontsize->setCurrentIndex(f_fontsize->findText(QString::number(f.pointSize())));
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f_bold->setChecked(f.bold());
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f_italic->setChecked(f.italic());
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f_underline->setChecked(f.underline());
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f_strikeout->setChecked(f.strikeOut());
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if (f.pointSize() == m_fontsize_h1) {
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f_paragraph->setCurrentIndex(ParagraphHeading1);
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} else if (f.pointSize() == m_fontsize_h2) {
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f_paragraph->setCurrentIndex(ParagraphHeading2);
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} else if (f.pointSize() == m_fontsize_h3) {
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f_paragraph->setCurrentIndex(ParagraphHeading3);
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} else if (f.pointSize() == m_fontsize_h4) {
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f_paragraph->setCurrentIndex(ParagraphHeading4);
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} else {
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if (f.fixedPitch() && f.family() == "Monospace") {
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f_paragraph->setCurrentIndex(ParagraphMonospace);
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} else {
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f_paragraph->setCurrentIndex(ParagraphStandard);
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}
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}
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if (f_textedit->textCursor().currentList()) {
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QTextListFormat lfmt = f_textedit->textCursor().currentList()->format();
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if (lfmt.style() == QTextListFormat::ListDisc) {
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f_list_bullet->setChecked(true);
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f_list_ordered->setChecked(false);
|
|
} else if (lfmt.style() == QTextListFormat::ListDecimal) {
|
|
f_list_bullet->setChecked(false);
|
|
f_list_ordered->setChecked(true);
|
|
} else {
|
|
f_list_bullet->setChecked(false);
|
|
f_list_ordered->setChecked(false);
|
|
}
|
|
} else {
|
|
f_list_bullet->setChecked(false);
|
|
f_list_ordered->setChecked(false);
|
|
}
|
|
}
|
|
|
|
void RichTextEdit::fgColorChanged(const QColor &c) {
|
|
QPixmap pix(16, 16);
|
|
if (c.isValid()) {
|
|
pix.fill(c);
|
|
} else {
|
|
pix.fill(QApplication::palette().foreground().color());
|
|
}
|
|
f_fgcolor->setIcon(pix);
|
|
}
|
|
|
|
void RichTextEdit::bgColorChanged(const QColor &c) {
|
|
QPixmap pix(16, 16);
|
|
if (c.isValid()) {
|
|
pix.fill(c);
|
|
} else {
|
|
pix.fill(QApplication::palette().background().color());
|
|
}
|
|
f_bgcolor->setIcon(pix);
|
|
}
|
|
|
|
void RichTextEdit::slotCurrentCharFormatChanged(const QTextCharFormat &format) {
|
|
fontChanged(format.font());
|
|
bgColorChanged((format.background().isOpaque()) ? format.background().color() : QColor());
|
|
fgColorChanged((format.foreground().isOpaque()) ? format.foreground().color() : QColor());
|
|
f_link->setChecked(format.isAnchor());
|
|
}
|
|
|
|
void RichTextEdit::slotClipboardDataChanged() {
|
|
#ifndef QT_NO_CLIPBOARD
|
|
if (const QMimeData *md = QApplication::clipboard()->mimeData())
|
|
f_paste->setEnabled(md->hasText());
|
|
#endif
|
|
}
|
|
|
|
QString RichTextEdit::toHtml() const {
|
|
QString s = f_textedit->toHtml();
|
|
// convert emails to links
|
|
s = s.replace(QRegExp("(<[^a][^>]+>(?:<span[^>]+>)?|\\s)([a-zA-Z\\d]+@[a-zA-Z\\d]+\\.[a-zA-Z]+)"), "\\1<a href=\"mailto:\\2\">\\2</a>");
|
|
// convert links
|
|
s = s.replace(QRegExp("(<[^a][^>]+>(?:<span[^>]+>)?|\\s)((?:https?|ftp|file)://[^\\s'\"<>]+)"), "\\1<a href=\"\\2\">\\2</a>");
|
|
// see also: Utils::linkify()
|
|
return s;
|
|
}
|
|
|
|
void RichTextEdit::increaseIndentation() {
|
|
indent(+1);
|
|
}
|
|
|
|
void RichTextEdit::decreaseIndentation() {
|
|
indent(-1);
|
|
}
|
|
|
|
void RichTextEdit::indent(int delta) {
|
|
QTextCursor cursor = f_textedit->textCursor();
|
|
cursor.beginEditBlock();
|
|
QTextBlockFormat bfmt = cursor.blockFormat();
|
|
int ind = bfmt.indent();
|
|
if (ind + delta >= 0) {
|
|
bfmt.setIndent(ind + delta);
|
|
}
|
|
cursor.setBlockFormat(bfmt);
|
|
cursor.endEditBlock();
|
|
}
|
|
|
|
void RichTextEdit::setText(const QString& text) {
|
|
if (text.isEmpty()) {
|
|
setPlainText(text);
|
|
return;
|
|
}
|
|
if (text[0] == '<') {
|
|
setHtml(text);
|
|
} else {
|
|
setPlainText(text);
|
|
}
|
|
}
|
|
|
|
void RichTextEdit::insertImage() {
|
|
QString file;
|
|
if (misc::getOpenFileName(window(), RshareSettings::LASTDIR_IMAGES, tr("Load Picture File"), "Pictures (*.png *.xpm *.jpg *.jpeg *.gif *.webp)", file)) {
|
|
QString encodedImage;
|
|
if (RsHtml::makeEmbeddedImage(file, encodedImage, 640*480, MAX_ALLOWED_GXS_MESSAGE_SIZE - 200)) {
|
|
QTextDocumentFragment fragment = QTextDocumentFragment::fromHtml(encodedImage);
|
|
f_textedit->textCursor().insertFragment(fragment);
|
|
}
|
|
}
|
|
}
|
|
|
|
void RichTextEdit::checkLength(){
|
|
QString text;
|
|
RsHtml::optimizeHtml(f_textedit, text);
|
|
std::wstring msg = text.toStdWString();
|
|
int charRemains = MAX_ALLOWED_GXS_MESSAGE_SIZE - msg.length();
|
|
if(charRemains >= 0) {
|
|
text = tr("It remains %1 characters after HTML conversion.").arg(charRemains);
|
|
f_info->setStyleSheet("QLabel#f_info { }");
|
|
}else{
|
|
text = tr("Warning: This message is too big of %1 characters after HTML conversion.").arg((0-charRemains));
|
|
f_info->setStyleSheet("QLabel#f_info {color: red; font: bold; }");
|
|
}
|
|
//buttonBox->button(QDialogButtonBox::Ok)->setEnabled(charRemains>=0);
|
|
f_info->setText(text);
|
|
}
|
|
|
|
|
|
void RichTextEdit::setPlaceHolderTextPosted() {
|
|
f_textedit->setPlaceholderText(tr("Text (optional)"));
|
|
}
|