mirror of
https://github.com/RetroShare/RetroShare.git
synced 2024-10-01 02:35:48 -04:00
Added patch from Anonymous Coward - readable chat
Added new options to the Chat settings window: - Enable custom fonts - Enable custom font size - Enable bold - Enable italics - Minimum text contrast git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@5579 b45a01b8-16f6-495d-af2f-9b41ad6348cc
This commit is contained in:
thunder2
parent
f336524bac
commit
28ec721c1b
@ -401,6 +401,25 @@ void FriendsDialog::addChatMsg(bool incoming, bool history, const QString &name,
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formatTextFlag |= RSHTML_FORMATTEXT_EMBED_SMILEYS;
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}
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// Always fix colors
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formatTextFlag |= RSHTML_FORMATTEXT_FIX_COLORS;
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qreal desiredContrast = Settings->valueFromGroup("Chat", "MinimumContrast", 4.5).toDouble();
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QColor backgroundColor = ui.groupChatTab->palette().base().color();
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// Remove font name, size, bold, italics?
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if (!Settings->valueFromGroup("Chat", "EnableCustomFonts", true).toBool()) {
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formatTextFlag |= RSHTML_FORMATTEXT_REMOVE_FONT_FAMILY;
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}
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if (!Settings->valueFromGroup("Chat", "EnableCustomFontSize", true).toBool()) {
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formatTextFlag |= RSHTML_FORMATTEXT_REMOVE_FONT_SIZE;
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}
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if (!Settings->valueFromGroup("Chat", "EnableBold", true).toBool()) {
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formatTextFlag |= RSHTML_FORMATTEXT_REMOVE_FONT_WEIGHT;
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}
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if (!Settings->valueFromGroup("Chat", "EnableItalics", true).toBool()) {
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formatTextFlag |= RSHTML_FORMATTEXT_REMOVE_FONT_STYLE;
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}
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ChatStyle::enumFormatMessage type;
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if (incoming) {
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if (history) {
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@ -416,7 +435,7 @@ void FriendsDialog::addChatMsg(bool incoming, bool history, const QString &name,
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}
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}
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QString formattedMessage = RsHtml().formatText(ui.msgText->document(), message, formatTextFlag);
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QString formattedMessage = RsHtml().formatText(ui.msgText->document(), message, formatTextFlag, backgroundColor, desiredContrast);
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QString formatMsg = style.formatMessage(type, name, incoming ? recvTime : sendTime, formattedMessage);
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ui.msgText->append(formatMsg);
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@ -320,6 +320,25 @@ void ChatWidget::addChatMsg(bool incoming, const QString &name, const QDateTime
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formatTextFlag |= RSHTML_FORMATTEXT_EMBED_SMILEYS;
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}
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// Always fix colors
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formatTextFlag |= RSHTML_FORMATTEXT_FIX_COLORS;
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qreal desiredContrast = Settings->valueFromGroup("Chat", "MinimumContrast", 4.5).toDouble();
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QColor backgroundColor = ui->textBrowser->palette().base().color();
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// Remove font name, size, bold, italics?
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if (!Settings->valueFromGroup("Chat", "EnableCustomFonts", true).toBool()) {
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formatTextFlag |= RSHTML_FORMATTEXT_REMOVE_FONT_FAMILY;
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}
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if (!Settings->valueFromGroup("Chat", "EnableCustomFontSize", true).toBool()) {
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formatTextFlag |= RSHTML_FORMATTEXT_REMOVE_FONT_SIZE;
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}
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if (!Settings->valueFromGroup("Chat", "EnableBold", true).toBool()) {
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formatTextFlag |= RSHTML_FORMATTEXT_REMOVE_FONT_WEIGHT;
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}
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if (!Settings->valueFromGroup("Chat", "EnableItalics", true).toBool()) {
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formatTextFlag |= RSHTML_FORMATTEXT_REMOVE_FONT_STYLE;
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}
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ChatStyle::enumFormatMessage type;
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if (chatType == TYPE_OFFLINE) {
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type = ChatStyle::FORMATMSG_OOUTGOING;
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@ -335,7 +354,7 @@ void ChatWidget::addChatMsg(bool incoming, const QString &name, const QDateTime
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formatFlag |= CHAT_FORMATMSG_SYSTEM;
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}
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QString formattedMessage = RsHtml().formatText(ui->textBrowser->document(), message, formatTextFlag);
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QString formattedMessage = RsHtml().formatText(ui->textBrowser->document(), message, formatTextFlag, backgroundColor, desiredContrast);
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QString formatMsg = chatStyle.formatMessage(type, name, incoming ? sendTime : recvTime, formattedMessage, formatFlag);
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ui->textBrowser->append(formatMsg);
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@ -99,8 +99,13 @@ bool
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ChatPage::save(QString &/*errmsg*/)
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{
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Settings->beginGroup(QString("Chat"));
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Settings->setValue(QString::fromUtf8("Emoteicons_PrivatChat"), ui.checkBox_emoteprivchat->isChecked());
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Settings->setValue(QString::fromUtf8("Emoteicons_GroupChat"), ui.checkBox_emotegroupchat->isChecked());
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Settings->setValue("Emoteicons_PrivatChat", ui.checkBox_emoteprivchat->isChecked());
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Settings->setValue("Emoteicons_GroupChat", ui.checkBox_emotegroupchat->isChecked());
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Settings->setValue("EnableCustomFonts", ui.checkBox_enableCustomFonts->isChecked());
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Settings->setValue("EnableCustomFontSize", ui.checkBox_enableCustomFontSize->isChecked());
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Settings->setValue("EnableBold", ui.checkBox_enableBold->isChecked());
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Settings->setValue("EnableItalics", ui.checkBox_enableItalics->isChecked());
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Settings->setValue("MinimumContrast", ui.minimumContrast->value());
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Settings->endGroup();
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Settings->setChatScreenFont(fontTempChat.toString());
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@ -154,8 +159,13 @@ void
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ChatPage::load()
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{
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Settings->beginGroup(QString("Chat"));
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ui.checkBox_emoteprivchat->setChecked(Settings->value(QString::fromUtf8("Emoteicons_PrivatChat"), true).toBool());
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ui.checkBox_emotegroupchat->setChecked(Settings->value(QString::fromUtf8("Emoteicons_GroupChat"), true).toBool());
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ui.checkBox_emoteprivchat->setChecked(Settings->value("Emoteicons_PrivatChat", true).toBool());
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ui.checkBox_emotegroupchat->setChecked(Settings->value("Emoteicons_GroupChat", true).toBool());
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ui.checkBox_enableCustomFonts->setChecked(Settings->value("EnableCustomFonts", true).toBool());
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ui.checkBox_enableCustomFontSize->setChecked(Settings->value("EnableCustomFontSize", true).toBool());
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ui.checkBox_enableBold->setChecked(Settings->value("EnableBold", true).toBool());
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ui.checkBox_enableItalics->setChecked(Settings->value("EnableItalics", true).toBool());
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ui.minimumContrast->setValue(Settings->value("MinimumContrast", 4.5).toDouble());
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Settings->endGroup();
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fontTempChat.fromString(Settings->getChatScreenFont());
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@ -6,8 +6,8 @@
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<rect>
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<x>0</x>
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<y>0</y>
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<width>405</width>
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<height>326</height>
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<width>444</width>
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<height>378</height>
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</rect>
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</property>
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<layout class="QGridLayout" name="gridLayout_2">
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@ -55,6 +55,83 @@
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</property>
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</widget>
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</item>
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<item>
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<widget class="QCheckBox" name="checkBox_enableCustomFonts">
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<property name="text">
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<string>Enable custom fonts</string>
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</property>
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<property name="checked">
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<bool>true</bool>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QCheckBox" name="checkBox_enableCustomFontSize">
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<property name="text">
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<string>Enable custom font size</string>
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</property>
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<property name="checked">
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<bool>true</bool>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QCheckBox" name="checkBox_enableBold">
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<property name="text">
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<string>Enable bold</string>
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</property>
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<property name="checked">
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<bool>true</bool>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QCheckBox" name="checkBox_enableItalics">
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<property name="text">
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<string>Enable italics</string>
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</property>
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<property name="checked">
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<bool>true</bool>
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</property>
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</widget>
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</item>
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<item>
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<layout class="QHBoxLayout" name="horizontalLayout_40">
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<item>
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<widget class="QLabel" name="label40">
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<property name="text">
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<string>Minimum text contrast</string>
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</property>
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</widget>
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</item>
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<item>
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<spacer name="horizontalSpacer_2">
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<property name="orientation">
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<enum>Qt::Horizontal</enum>
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</property>
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<property name="sizeHint" stdset="0">
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<size>
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<width>40</width>
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<height>20</height>
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</size>
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</property>
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</spacer>
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</item>
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<item>
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<widget class="QDoubleSpinBox" name="minimumContrast">
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<property name="minimum">
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<double>1.000000000000000</double>
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</property>
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<property name="maximum">
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<double>21.000000000000000</double>
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</property>
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<property name="singleStep">
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<double>0.500000000000000</double>
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</property>
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</widget>
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</item>
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</layout>
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</item>
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<item>
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<widget class="QCheckBox" name="sendMessageWithCtrlReturn">
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<property name="text">
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@ -327,7 +327,7 @@ void RsHtml::embedHtml(QTextDocument *textDocument, QDomDocument& doc, QDomEleme
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}
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}
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QString RsHtml::formatText(QTextDocument *textDocument, const QString &text, ulong flag)
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QString RsHtml::formatText(QTextDocument *textDocument, const QString &text, ulong flag, const QColor &backgroundColor, qreal desiredContrast)
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{
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if (flag == 0 || text.isEmpty()) {
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// nothing to do
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@ -353,15 +353,8 @@ QString RsHtml::formatText(QTextDocument *textDocument, const QString &text, ulo
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QString formattedText = doc.toString(-1); // -1 removes any annoying carriage return misinterpreted by QTextEdit
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unsigned int optimizeFlag = 0;
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if (flag & RSHTML_FORMATTEXT_REMOVE_FONT) {
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optimizeFlag |= RSHTML_OPTIMIZEHTML_REMOVE_FONT;
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}
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if (flag & RSHTML_FORMATTEXT_REMOVE_COLOR) {
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optimizeFlag |= RSHTML_OPTIMIZEHTML_REMOVE_COLOR;
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}
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if (optimizeFlag || (flag & RSHTML_FORMATTEXT_OPTIMIZE)) {
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optimizeHtml(formattedText, optimizeFlag);
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if (flag & RSHTML_OPTIMIZEHTML_MASK) {
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optimizeHtml(formattedText, flag & RSHTML_OPTIMIZEHTML_MASK, backgroundColor, desiredContrast);
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}
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return formattedText;
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@ -421,7 +414,80 @@ static void removeElement(QDomElement& parentElement, QDomElement& element)
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parentElement.removeChild(element);
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}
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static void optimizeHtml(QDomDocument& doc, QDomElement& currentElement, unsigned int flag)
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static qreal linearizeColorComponent(qreal v)
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{
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if (v <= 0.03928) return v/12.92;
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else return pow((v+0.055)/1.055, 2.4);
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}
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static qreal getRelativeLuminance(const QColor &c)
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{
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qreal r = linearizeColorComponent(c.redF()) * 0.2126;
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qreal g = linearizeColorComponent(c.greenF()) * 0.7152;
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qreal b = linearizeColorComponent(c.blueF()) * 0.0722;
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return r+g+b;
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}
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/**
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* @brief Compute the contrast between two relative luminances.
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* See: http://www.w3.org/TR/2012/NOTE-WCAG20-TECHS-20120103/G18
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* @param lum1, lum2 Relative luminances returned by getRelativeLuminance().
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* @return Contrast between 1 and 21.
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*/
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static qreal getContrastRatio(qreal lum1, qreal lum2)
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{
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if (lum2 > lum1) {
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qreal t = lum1;
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lum1 = lum2;
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lum2 = t;
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}
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return (lum1+0.05)/(lum2+0.05);
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}
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/**
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* @brief Find a color with the same hue that provides the desired contrast with bglum.
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* @param[in,out] val Name of the original color. Will be modified.
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* @param bglum Background's relative luminance as returned by getRelativeLuminance().
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*/
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static void findBestColor(QString &val, qreal bglum, qreal desiredContrast)
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{
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// Change text color to get a good contrast with the background
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QColor c(val);
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qreal lum = ::getRelativeLuminance(c);
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// Keep text color darker/brighter than the bg if possible
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qreal lowContrast = ::getContrastRatio(bglum, 0.0);
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qreal highContrast = ::getContrastRatio(bglum, 1.0);
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bool searchDown = (lum <= bglum && lowContrast >= desiredContrast)
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|| (lum > bglum && highContrast < desiredContrast && lowContrast >= highContrast);
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// There's no such thing as too much contrast on a bright background,
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// but on a dark background it creates haloing which makes text hard to read.
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// So we enforce desired contrast when the bg is dark.
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if (!searchDown || ::getContrastRatio(lum, bglum) < desiredContrast) {
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// Bisection search of the correct "lightness" to get the desired contrast
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qreal minl = searchDown ? 0.0 : bglum;
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qreal maxl = searchDown ? bglum : 1.0;
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do {
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QColor d = c;
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qreal midl = (minl+maxl)/2.0;
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d.setHslF(c.hslHueF(), c.hslSaturationF(), midl);
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qreal lum = ::getRelativeLuminance(d);
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if ((::getContrastRatio(lum, bglum) < desiredContrast) ^ searchDown ) {
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minl = midl;
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}
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else {
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maxl = midl;
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}
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} while (maxl - minl > 0.01);
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c.setHslF(c.hslHueF(), c.hslSaturationF(), minl);
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val = c.name();
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}
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}
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static void optimizeHtml(QDomDocument& doc, QDomElement& currentElement, unsigned int flag, qreal bglum, qreal desiredContrast)
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{
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if (currentElement.tagName().toLower() == "html") {
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// change <html> to <span>
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@ -443,7 +509,7 @@ static void optimizeHtml(QDomDocument& doc, QDomElement& currentElement, unsigne
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style.replace("margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px;", "margin:0px 0px 0px 0px;");
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style.replace("; ", ";");
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if (flag & (RSHTML_OPTIMIZEHTML_REMOVE_FONT | RSHTML_OPTIMIZEHTML_REMOVE_COLOR)) {
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if (flag) {
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QStringList styles = style.split(';');
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style.clear();
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foreach (QString pair, styles) {
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@ -451,21 +517,35 @@ static void optimizeHtml(QDomDocument& doc, QDomElement& currentElement, unsigne
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QStringList keyvalue = pair.split(':');
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if (keyvalue.length() == 2) {
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QString key = keyvalue.at(0).trimmed();
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QString val = keyvalue.at(1).trimmed();
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if (flag & RSHTML_OPTIMIZEHTML_REMOVE_FONT) {
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if (key == "font-family" ||
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key == "font-size" ||
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key == "font-weight" ||
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key == "font-style") {
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continue;
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}
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if ((flag & RSHTML_FORMATTEXT_REMOVE_FONT_FAMILY && key == "font-family") ||
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(flag & RSHTML_FORMATTEXT_REMOVE_FONT_SIZE && key == "font-size") ||
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(flag & RSHTML_FORMATTEXT_REMOVE_FONT_WEIGHT && key == "font-weight") ||
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(flag & RSHTML_FORMATTEXT_REMOVE_FONT_STYLE && key == "font-style")) {
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continue;
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}
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if (flag & RSHTML_OPTIMIZEHTML_REMOVE_COLOR) {
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if (flag & RSHTML_FORMATTEXT_REMOVE_COLOR) {
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if (key == "color") {
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continue;
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}
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}
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style += key + ":" + keyvalue.at(1).trimmed() + ";";
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else if (flag & RSHTML_FORMATTEXT_FIX_COLORS) {
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if (key == "color") {
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findBestColor(val, bglum, desiredContrast);
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}
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}
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if (flag & (RSHTML_FORMATTEXT_REMOVE_COLOR | RSHTML_FORMATTEXT_FIX_COLORS)) {
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if (key == "background" || key == "background-color") {
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// Remove background color because if we change the text color,
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// it can become unreadable on the original background.
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// Also, FIX_COLORS is intended to display text on the default
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// background color of the operating system.
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continue;
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}
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}
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style += key + ":" + val + ";";
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} else {
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style += pair + ";";
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}
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@ -513,7 +593,7 @@ static void optimizeHtml(QDomDocument& doc, QDomElement& currentElement, unsigne
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}
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// iterate children
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optimizeHtml(doc, element, flag);
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optimizeHtml(doc, element, flag, bglum, desiredContrast);
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// <p>
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if (element.tagName().toLower() == "p") {
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@ -598,7 +678,19 @@ void RsHtml::optimizeHtml(QTextEdit *textEdit, QString &text, unsigned int flag)
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optimizeHtml(text, flag);
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}
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void RsHtml::optimizeHtml(QString &text, unsigned int flag)
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/**
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* @brief Make an HTML document smaller by removing useless stuff.
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* Can also change the text color to make it more readable.
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* @param[in,out] text HTML document.
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* @param flag Bitfield of RSHTML_FORMATTEXT_* constants (they must be part of
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* RSHTML_OPTIMIZEHTML_MASK).
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* @param backgroundColor Background color of the widget where the text will be
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* displayed. Needed only if RSHTML_FORMATTEXT_FIX_COLORS
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* is passed inside flag.
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* @param desiredContrast Minimum contrast between text and background color,
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* between 1 and 21.
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*/
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void RsHtml::optimizeHtml(QString &text, unsigned int flag, const QColor &backgroundColor, qreal desiredContrast)
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{
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int originalLength = text.length();
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@ -611,7 +703,7 @@ void RsHtml::optimizeHtml(QString &text, unsigned int flag)
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}
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QDomElement body = doc.documentElement();
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::optimizeHtml(doc, body, flag);
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::optimizeHtml(doc, body, flag, ::getRelativeLuminance(backgroundColor), desiredContrast);
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text = doc.toString(-1);
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std::cerr << "Optimized text to " << text.length() << " bytes , instead of " << originalLength << std::endl;
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@ -31,17 +31,21 @@
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#include <QRegExp>
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/* Flags for RsHtml::formatText */
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#define RSHTML_FORMATTEXT_EMBED_SMILEYS 1
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#define RSHTML_FORMATTEXT_EMBED_LINKS 2
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#define RSHTML_FORMATTEXT_REMOVE_FONT 4
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#define RSHTML_FORMATTEXT_REMOVE_COLOR 8
|
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#define RSHTML_FORMATTEXT_CLEANSTYLE (RSHTML_FORMATTEXT_REMOVE_FONT | RSHTML_FORMATTEXT_REMOVE_COLOR)
|
||||
#define RSHTML_FORMATTEXT_OPTIMIZE 16
|
||||
#define RSHTML_FORMATTEXT_REPLACE_LINKS 32
|
||||
#define RSHTML_FORMATTEXT_EMBED_SMILEYS 1
|
||||
#define RSHTML_FORMATTEXT_EMBED_LINKS 2
|
||||
#define RSHTML_FORMATTEXT_OPTIMIZE 4
|
||||
#define RSHTML_FORMATTEXT_REPLACE_LINKS 8
|
||||
#define RSHTML_FORMATTEXT_REMOVE_COLOR 16
|
||||
#define RSHTML_FORMATTEXT_FIX_COLORS 32 /* Make text readable */
|
||||
#define RSHTML_FORMATTEXT_REMOVE_FONT_WEIGHT 64 /* Remove bold */
|
||||
#define RSHTML_FORMATTEXT_REMOVE_FONT_STYLE 128 /* Remove italics */
|
||||
#define RSHTML_FORMATTEXT_REMOVE_FONT_FAMILY 256
|
||||
#define RSHTML_FORMATTEXT_REMOVE_FONT_SIZE 512
|
||||
#define RSHTML_FORMATTEXT_REMOVE_FONT (RSHTML_FORMATTEXT_REMOVE_FONT_WEIGHT | RSHTML_FORMATTEXT_REMOVE_FONT_STYLE | RSHTML_FORMATTEXT_REMOVE_FONT_FAMILY | RSHTML_FORMATTEXT_REMOVE_FONT_SIZE)
|
||||
#define RSHTML_FORMATTEXT_CLEANSTYLE (RSHTML_FORMATTEXT_REMOVE_FONT | RSHTML_FORMATTEXT_REMOVE_COLOR)
|
||||
|
||||
/* Flags for RsHtml::formatText */
|
||||
#define RSHTML_OPTIMIZEHTML_REMOVE_FONT 2
|
||||
#define RSHTML_OPTIMIZEHTML_REMOVE_COLOR 1
|
||||
/* Flags for RsHtml::optimizeHtml */
|
||||
#define RSHTML_OPTIMIZEHTML_MASK (RSHTML_FORMATTEXT_CLEANSTYLE | RSHTML_FORMATTEXT_FIX_COLORS)
|
||||
|
||||
class QTextEdit;
|
||||
class QTextDocument;
|
||||
@ -57,11 +61,11 @@ public:
|
||||
|
||||
static void initEmoticons(const QHash< QString, QString >& hash);
|
||||
|
||||
QString formatText(QTextDocument *textDocument, const QString &text, ulong flag);
|
||||
QString formatText(QTextDocument *textDocument, const QString &text, ulong flag, const QColor &backgroundColor = Qt::white, qreal desiredContrast = 1.0);
|
||||
static bool findAnchors(const QString &text, QStringList& urls);
|
||||
|
||||
static void optimizeHtml(QTextEdit *textEdit, QString &text, unsigned int flag = 0);
|
||||
static void optimizeHtml(QString &text, unsigned int flag = 0);
|
||||
static void optimizeHtml(QString &text, unsigned int flag = 0, const QColor &backgroundColor = Qt::white, qreal desiredContrast = 1.0);
|
||||
static QString toHtml(QString text, bool realHtml = true);
|
||||
|
||||
static bool makeEmbeddedImage(const QString &fileName, QString &embeddedImage, const int maxPixels);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user