591 lines
16 KiB
C++
591 lines
16 KiB
C++
// This file is part of Desktop App Toolkit,
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// a set of libraries for developing nice desktop applications.
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//
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// For license and copyright information please follow this link:
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// https://github.com/desktop-app/legal/blob/master/LEGAL
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//
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#pragma once
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#include "base/timer.h"
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#include "ui/emoji_config.h"
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#include "ui/rp_widget.h"
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#include "ui/effects/animations.h"
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#include "ui/text/text_entity.h"
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#include "ui/text/text_custom_emoji.h"
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#include <QtGui/QTextObjectInterface>
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#include <rpl/variable.h>
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class QMenu;
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class QTextEdit;
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class QTouchEvent;
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class QContextMenuEvent;
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class Painter;
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namespace Ui::Text {
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class CustomEmoji;
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} // namespace Ui::Text
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namespace style {
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struct InputField;
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} // namespace style
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namespace Ui {
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const auto kClearFormatSequence = QKeySequence("ctrl+shift+n");
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const auto kStrikeOutSequence = QKeySequence("ctrl+shift+x");
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const auto kBlockquoteSequence = QKeySequence("ctrl+shift+.");
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const auto kMonospaceSequence = QKeySequence("ctrl+shift+m");
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const auto kEditLinkSequence = QKeySequence("ctrl+k");
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const auto kSpoilerSequence = QKeySequence("ctrl+shift+p");
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class PopupMenu;
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class InputField;
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void InsertEmojiAtCursor(QTextCursor cursor, EmojiPtr emoji);
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void InsertCustomEmojiAtCursor(
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not_null<InputField*> field,
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QTextCursor cursor,
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const QString &text,
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const QString &link);
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struct InstantReplaces {
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struct Node {
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QString text;
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std::map<QChar, Node> tail;
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};
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void add(const QString &what, const QString &with);
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static const InstantReplaces &Default();
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static const InstantReplaces &TextOnly();
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int maxLength = 0;
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Node reverseMap;
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};
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enum class InputSubmitSettings {
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Enter,
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CtrlEnter,
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Both,
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None,
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};
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class CustomEmojiObject : public QObject, public QTextObjectInterface {
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public:
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using Factory = Fn<std::unique_ptr<Text::CustomEmoji>(QStringView)>;
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CustomEmojiObject(
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const style::font &font,
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Factory factory,
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Fn<bool()> paused);
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~CustomEmojiObject();
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void *qt_metacast(const char *iid) override;
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QSizeF intrinsicSize(
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QTextDocument *doc,
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int posInDocument,
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const QTextFormat &format) override;
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void drawObject(
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QPainter *painter,
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const QRectF &rect,
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QTextDocument *doc,
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int posInDocument,
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const QTextFormat &format) override;
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void setNow(crl::time now);
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void clear();
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private:
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const style::font _font;
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Factory _factory;
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Fn<bool()> _paused;
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base::flat_map<uint64, std::unique_ptr<Text::CustomEmoji>> _emoji;
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crl::time _now = 0;
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int _skip = 0;
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};
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class InputField : public RpWidget {
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public:
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enum class Mode {
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SingleLine,
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NoNewlines,
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MultiLine,
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};
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using TagList = TextWithTags::Tags;
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using CustomEmojiFactory = Text::CustomEmojiFactory;
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struct MarkdownTag {
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// With each emoji being QChar::ObjectReplacementCharacter.
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int internalStart = 0;
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int internalLength = 0;
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// Adjusted by emoji to match _lastTextWithTags.
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int adjustedStart = 0;
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int adjustedLength = 0;
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bool closed = false;
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QString tag;
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};
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static const QString kTagBold;
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static const QString kTagItalic;
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static const QString kTagUnderline;
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static const QString kTagStrikeOut;
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static const QString kTagCode;
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static const QString kTagPre;
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static const QString kTagSpoiler;
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static const QString kTagBlockquote;
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static const QString kCustomEmojiTagStart;
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static const int kCustomEmojiFormat; // QTextFormat::ObjectTypes
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static const int kCustomEmojiId; // QTextFormat::Property
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InputField(
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QWidget *parent,
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const style::InputField &st,
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rpl::producer<QString> placeholder,
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const QString &value = QString());
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InputField(
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QWidget *parent,
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const style::InputField &st,
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Mode mode,
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rpl::producer<QString> placeholder,
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const QString &value);
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InputField(
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QWidget *parent,
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const style::InputField &st,
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Mode mode = Mode::SingleLine,
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rpl::producer<QString> placeholder = nullptr,
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const TextWithTags &value = TextWithTags());
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[[nodiscard]] const style::InputField &st() const {
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return _st;
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}
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void showError();
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void showErrorNoFocus();
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void hideError();
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void setMaxLength(int maxLength);
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void setMinHeight(int minHeight);
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void setMaxHeight(int maxHeight);
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const TextWithTags &getTextWithTags() const {
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return _lastTextWithTags;
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}
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const std::vector<MarkdownTag> &getMarkdownTags() const {
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return _lastMarkdownTags;
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}
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TextWithTags getTextWithTagsPart(int start, int end = -1) const;
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TextWithTags getTextWithAppliedMarkdown() const;
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void insertTag(const QString &text, QString tagId = QString());
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bool empty() const {
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return _lastTextWithTags.text.isEmpty();
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}
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enum class HistoryAction {
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NewEntry,
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MergeEntry,
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Clear,
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};
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void setTextWithTags(
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const TextWithTags &textWithTags,
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HistoryAction historyAction = HistoryAction::NewEntry);
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// If you need to make some preparations of tags before putting them to QMimeData
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// (and then to clipboard or to drag-n-drop object), here is a strategy for that.
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void setTagMimeProcessor(Fn<QString(QStringView)> processor);
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void setCustomEmojiFactory(
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CustomEmojiFactory factory,
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Fn<bool()> paused = nullptr);
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struct EditLinkSelection {
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int from = 0;
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int till = 0;
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};
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enum class EditLinkAction {
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Check,
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Edit,
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};
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void setEditLinkCallback(
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Fn<bool(
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EditLinkSelection selection,
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QString text,
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QString link,
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EditLinkAction action)> callback);
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struct ExtendedContextMenu {
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QMenu *menu = nullptr;
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std::shared_ptr<QContextMenuEvent> event;
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};
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void setAdditionalMargin(int margin);
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void setAdditionalMargins(QMargins margins);
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void setInstantReplaces(const InstantReplaces &replaces);
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void setInstantReplacesEnabled(rpl::producer<bool> enabled);
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void setMarkdownReplacesEnabled(rpl::producer<bool> enabled);
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void setExtendedContextMenu(rpl::producer<ExtendedContextMenu> value);
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void commitInstantReplacement(
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int from,
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int till,
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const QString &with,
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const QString &customEmojiData);
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void commitMarkdownLinkEdit(
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EditLinkSelection selection,
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const QString &text,
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const QString &link);
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[[nodiscard]] static bool IsValidMarkdownLink(QStringView link);
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[[nodiscard]] static bool IsCustomEmojiLink(QStringView link);
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[[nodiscard]] static QString CustomEmojiLink(QStringView entityData);
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[[nodiscard]] static QString CustomEmojiEntityData(QStringView link);
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const QString &getLastText() const {
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return _lastTextWithTags.text;
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}
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[[nodiscard]] int lastTextSizeWithoutSurrogatePairsCount() const {
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return _lastTextSizeWithoutSurrogatePairsCount;
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}
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void setPlaceholder(
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rpl::producer<QString> placeholder,
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int afterSymbols = 0);
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void setPlaceholderHidden(bool forcePlaceholderHidden);
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void setDisplayFocused(bool focused);
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void finishAnimating();
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void setFocusFast() {
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setDisplayFocused(true);
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setFocus();
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}
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QSize sizeHint() const override;
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QSize minimumSizeHint() const override;
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bool hasText() const;
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void selectAll();
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bool isUndoAvailable() const;
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bool isRedoAvailable() const;
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bool isMarkdownEnabled() const {
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return _markdownEnabled;
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}
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using SubmitSettings = InputSubmitSettings;
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void setSubmitSettings(SubmitSettings settings);
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static bool ShouldSubmit(
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SubmitSettings settings,
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Qt::KeyboardModifiers modifiers);
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void customUpDown(bool isCustom);
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void customTab(bool isCustom);
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int borderAnimationStart() const;
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not_null<QTextDocument*> document();
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not_null<const QTextDocument*> document() const;
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void setTextCursor(const QTextCursor &cursor);
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void setCursorPosition(int position);
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QTextCursor textCursor() const;
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void setText(const QString &text);
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void clear();
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bool hasFocus() const;
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void setFocus();
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void clearFocus();
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void ensureCursorVisible();
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not_null<QTextEdit*> rawTextEdit();
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not_null<const QTextEdit*> rawTextEdit() const;
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enum class MimeAction {
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Check,
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Insert,
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};
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using MimeDataHook = Fn<bool(
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not_null<const QMimeData*> data,
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MimeAction action)>;
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void setMimeDataHook(MimeDataHook hook) {
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_mimeDataHook = std::move(hook);
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}
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const rpl::variable<int> &scrollTop() const;
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int scrollTopMax() const;
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void scrollTo(int top);
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struct DocumentChangeInfo {
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int position = 0;
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int added = 0;
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int removed = 0;
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};
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auto documentContentsChanges() {
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return _documentContentsChanges.events();
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}
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auto markdownTagApplies() {
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return _markdownTagApplies.events();
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}
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[[nodiscard]] bool menuShown() const;
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[[nodiscard]] rpl::producer<bool> menuShownValue() const;
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[[nodiscard]] rpl::producer<> heightChanges() const;
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[[nodiscard]] rpl::producer<bool> focusedChanges() const;
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[[nodiscard]] rpl::producer<> tabbed() const;
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[[nodiscard]] rpl::producer<> cancelled() const;
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[[nodiscard]] rpl::producer<> changes() const;
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[[nodiscard]] rpl::producer<Qt::KeyboardModifiers> submits() const;
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void forceProcessContentsChanges();
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~InputField();
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protected:
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void startPlaceholderAnimation();
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void startBorderAnimation();
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void paintEvent(QPaintEvent *e) override;
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void focusInEvent(QFocusEvent *e) override;
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void mousePressEvent(QMouseEvent *e) override;
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void contextMenuEvent(QContextMenuEvent *e) override;
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void resizeEvent(QResizeEvent *e) override;
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private:
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class Inner;
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friend class Inner;
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void handleContentsChanged();
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bool viewportEventInner(QEvent *e);
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void handleTouchEvent(QTouchEvent *e);
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void updatePalette();
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void refreshPlaceholder(const QString &text);
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int placeholderSkipWidth() const;
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bool heightAutoupdated();
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void checkContentHeight();
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void setErrorShown(bool error);
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void focusInEventInner(QFocusEvent *e);
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void focusOutEventInner(QFocusEvent *e);
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void setFocused(bool focused);
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void keyPressEventInner(QKeyEvent *e);
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void contextMenuEventInner(QContextMenuEvent *e, QMenu *m = nullptr);
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void dropEventInner(QDropEvent *e);
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void inputMethodEventInner(QInputMethodEvent *e);
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void paintEventInner(QPaintEvent *e);
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void mousePressEventInner(QMouseEvent *e);
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void mouseReleaseEventInner(QMouseEvent *e);
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void mouseMoveEventInner(QMouseEvent *e);
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QMimeData *createMimeDataFromSelectionInner() const;
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bool canInsertFromMimeDataInner(const QMimeData *source) const;
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void insertFromMimeDataInner(const QMimeData *source);
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TextWithTags getTextWithTagsSelected() const;
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void documentContentsChanged(
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int position,
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int charsRemoved,
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int charsAdded);
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void focusInner();
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// "start" and "end" are in coordinates of text where emoji are replaced
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// by ObjectReplacementCharacter. If "end" = -1 means get text till the end.
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struct TextPart final {
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QString text;
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int textSizeWithoutSurrogatePairsCount = 0;
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};
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TextPart getTextPart(
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int start,
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int end,
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TagList &outTagsList,
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bool &outTagsChanged,
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std::vector<MarkdownTag> *outMarkdownTags = nullptr) const;
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// After any characters added we must postprocess them. This includes:
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// 1. Replacing font family to semibold for ~ characters, if we used Open Sans 13px.
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// 2. Replacing font family from semibold for all non-~ characters, if we used ...
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// 3. Replacing emoji code sequences by ObjectReplacementCharacters with emoji pics.
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// 4. Interrupting tags in which the text was inserted by any char except a letter.
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// 5. Applying tags from "_insertedTags" in case we pasted text with tags, not just text.
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// Rule 4 applies only if we inserted chars not in the middle of a tag (but at the end).
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void processFormatting(int changedPosition, int changedEnd);
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void chopByMaxLength(int insertPosition, int insertLength);
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bool processMarkdownReplaces(const QString &appended);
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//bool processMarkdownReplace(const QString &tag);
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void addMarkdownActions(not_null<QMenu*> menu, QContextMenuEvent *e);
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void addMarkdownMenuAction(
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not_null<QMenu*> menu,
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not_null<QAction*> action);
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bool handleMarkdownKey(QKeyEvent *e);
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// We don't want accidentally detach InstantReplaces map.
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// So we access it only by const reference from this method.
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const InstantReplaces &instantReplaces() const;
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void processInstantReplaces(const QString &appended);
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void applyInstantReplace(const QString &what, const QString &with);
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struct EditLinkData {
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int from = 0;
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int till = 0;
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QString link;
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};
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EditLinkData selectionEditLinkData(EditLinkSelection selection) const;
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EditLinkSelection editLinkSelection(QContextMenuEvent *e) const;
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void editMarkdownLink(EditLinkSelection selection);
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void commitInstantReplacement(
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int from,
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int till,
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const QString &with,
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const QString &customEmojiData,
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std::optional<QString> checkOriginal,
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bool checkIfInMonospace);
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#if 0
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bool commitMarkdownReplacement(
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int from,
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int till,
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const QString &tag,
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const QString &edge = QString());
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#endif
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void addMarkdownTag(int from, int till, const QString &tag);
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void removeMarkdownTag(int from, int till, const QString &tag);
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void finishMarkdownTagChange(
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int from,
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int till,
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const TextWithTags &textWithTags);
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void toggleSelectionMarkdown(const QString &tag);
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void clearSelectionMarkdown();
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bool revertFormatReplace();
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void paintSurrounding(
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QPainter &p,
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QRect clip,
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float64 errorDegree,
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float64 focusedDegree);
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void paintRoundSurrounding(
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QPainter &p,
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QRect clip,
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float64 errorDegree,
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float64 focusedDegree);
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void paintFlatSurrounding(
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QPainter &p,
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QRect clip,
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float64 errorDegree,
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float64 focusedDegree);
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void customEmojiRepaint();
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void highlightMarkdown();
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void touchUpdate(QPoint globalPosition);
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void touchFinish();
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const style::InputField &_st;
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Mode _mode = Mode::SingleLine;
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int _maxLength = -1;
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int _minHeight = -1;
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int _maxHeight = -1;
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const std::unique_ptr<Inner> _inner;
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Fn<bool(
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EditLinkSelection selection,
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QString text,
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QString link,
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EditLinkAction action)> _editLinkCallback;
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TextWithTags _lastTextWithTags;
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std::vector<MarkdownTag> _lastMarkdownTags;
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QString _lastPreEditText;
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int _lastTextSizeWithoutSurrogatePairsCount = 0;
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std::optional<QString> _inputMethodCommit;
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QMargins _additionalMargins;
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QMargins _customFontMargins;
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int _placeholderCustomFontSkip = 0;
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bool _forcePlaceholderHidden = false;
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bool _reverseMarkdownReplacement = false;
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bool _customEmojiRepaintScheduled = false;
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// Tags list which we should apply while setText() call or insert from mime data.
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TagList _insertedTags;
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bool _insertedTagsAreFromMime;
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// Override insert position and charsAdded from complex text editing
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// (like drag-n-drop in the same text edit field).
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int _realInsertPosition = -1;
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int _realCharsAdded = 0;
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// Calculate the amount of emoji extra chars
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// before _documentContentsChanges fire.
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int _emojiSurrogateAmount = 0;
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Fn<QString(QStringView)> _tagMimeProcessor;
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std::unique_ptr<CustomEmojiObject> _customEmojiObject;
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SubmitSettings _submitSettings = SubmitSettings::Enter;
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bool _markdownEnabled = false;
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bool _undoAvailable = false;
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bool _redoAvailable = false;
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bool _inDrop = false;
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bool _inHeightCheck = false;
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bool _customUpDown = false;
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bool _customTab = false;
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rpl::variable<QString> _placeholderFull;
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QString _placeholder;
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int _placeholderAfterSymbols = 0;
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Animations::Simple _a_placeholderShifted;
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bool _placeholderShifted = false;
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QPainterPath _placeholderPath;
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Animations::Simple _a_borderShown;
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int _borderAnimationStart = 0;
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Animations::Simple _a_borderOpacity;
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bool _borderVisible = false;
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Animations::Simple _a_focused;
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Animations::Simple _a_error;
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bool _focused = false;
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bool _error = false;
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base::Timer _touchTimer;
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bool _touchPress = false;
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bool _touchRightButton = false;
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bool _touchMove = false;
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bool _mousePressedInTouch = false;
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QPoint _touchStart;
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bool _correcting = false;
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MimeDataHook _mimeDataHook;
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rpl::event_stream<bool> _menuShownChanges;
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base::unique_qptr<PopupMenu> _contextMenu;
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QTextCharFormat _defaultCharFormat;
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QTextBlockFormat _defaultBlockFormat;
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rpl::variable<int> _scrollTop;
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InstantReplaces _mutableInstantReplaces;
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bool _instantReplacesEnabled = true;
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rpl::event_stream<DocumentChangeInfo> _documentContentsChanges;
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rpl::event_stream<MarkdownTag> _markdownTagApplies;
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rpl::event_stream<bool> _focusedChanges;
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rpl::event_stream<> _heightChanges;
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rpl::event_stream<> _tabbed;
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rpl::event_stream<> _cancelled;
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rpl::event_stream<> _changes;
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rpl::event_stream<Qt::KeyboardModifiers> _submits;
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};
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void PrepareFormattingOptimization(not_null<QTextDocument*> document);
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[[nodiscard]] int FieldCharacterCount(not_null<InputField*> field);
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void AddLengthLimitLabel(not_null<InputField*> field, int limit);
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} // namespace Ui
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