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Telegram/SourceFiles/ui/controls/tabbed_search.h

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+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "base/timer.h"
+#include "base/qt/qt_compare.h"
+#include "ui/rp_widget.h"
+#include "ui/effects/animations.h"
+#include "ui/text/text_custom_emoji.h"
+
+namespace style {
+struct EmojiPan;
+struct TabbedSearch;
+} // namespace style
+
+namespace anim {
+enum class type : uchar;
+} // namespace anim
+
+namespace Ui {
+
+class InputField;
+class IconButton;
+class CrossButton;
+class RpWidget;
+template <typename Widget>
+class FadeWrap;
+
+enum class EmojiGroupType {
+	Normal,
+	Greeting,
+	Premium,
+};
+
+struct EmojiGroup {
+	QString iconId;
+	std::vector<QString> emoticons;
+	EmojiGroupType type = EmojiGroupType::Normal;
+
+	friend inline auto operator<=>(
+		const EmojiGroup &a,
+		const EmojiGroup &b) = default;
+};
+
+[[nodiscard]] const QString &PremiumGroupFakeEmoticon();
+
+struct SearchDescriptor {
+	const style::TabbedSearch &st;
+	rpl::producer<std::vector<EmojiGroup>> groups;
+	Text::CustomEmojiFactory customEmojiFactory;
+};
+
+class SearchWithGroups final : public RpWidget {
+public:
+	SearchWithGroups(QWidget *parent, SearchDescriptor descriptor);
+
+	[[nodiscard]] rpl::producer<> escapes() const;
+	[[nodiscard]] rpl::producer<std::vector<QString>> queryValue() const;
+	[[nodiscard]] auto debouncedQueryValue() const
+		-> rpl::producer<std::vector<QString>>;
+
+	void cancel();
+	void setLoading(bool loading);
+	void stealFocus();
+	void returnFocus();
+
+	[[nodiscard]] static int IconSizeOverride();
+
+private:
+	int resizeGetHeight(int newWidth) override;
+	void wheelEvent(QWheelEvent *e) override;
+
+	[[nodiscard]] int clampGroupsLeft(int width, int desiredLeft) const;
+	void moveGroupsBy(int width, int delta);
+	void moveGroupsTo(int width, int to);
+	void scrollGroupsToIcon(int iconLeft, int iconRight);
+	void scrollGroupsToStart();
+	void scrollGroupsTo(int left);
+
+	[[nodiscard]] anim::type animated() const;
+	void initField();
+	void initGroups();
+	void initEdges();
+	void initButtons();
+
+	void ensureRounding(int size, float64 rounding);
+
+	const style::TabbedSearch &_st;
+	not_null<FadeWrap<IconButton>*> _search;
+	not_null<FadeWrap<IconButton>*> _back;
+	not_null<CrossButton*> _cancel;
+	not_null<InputField*> _field;
+	QPointer<QWidget> _focusTakenFrom;
+	not_null<FadeWrap<RpWidget>*> _groups;
+	not_null<RpWidget*> _fade;
+	rpl::variable<float64> _fadeOpacity = 0.;
+	int _fadeLeftStart = 0;
+
+	rpl::variable<int> _fieldPlaceholderWidth;
+	rpl::variable<bool> _fieldEmpty = true;
+	Ui::Animations::Simple _groupsLeftAnimation;
+	int _groupsLeftTo = 0;
+
+	QImage _rounding;
+
+	rpl::variable<std::vector<QString>> _query;
+	rpl::variable<std::vector<QString>> _debouncedQuery;
+	rpl::variable<QString> _chosenGroup;
+	base::Timer _debounceTimer;
+	bool _inited = false;
+
+};
+
+class TabbedSearch final {
+public:
+	TabbedSearch(
+		not_null<RpWidget*> parent,
+		const style::EmojiPan &st,
+		SearchDescriptor &&descriptor);
+
+	[[nodiscard]] int height() const;
+	[[nodiscard]] QImage grab();
+
+	[[nodiscard]] rpl::producer<> escapes() const;
+	[[nodiscard]] rpl::producer<std::vector<QString>> queryValue() const;
+	[[nodiscard]] auto debouncedQueryValue() const
+		->rpl::producer<std::vector<QString>>;
+
+	void cancel();
+	void setLoading(bool loading);
+	void stealFocus();
+	void returnFocus();
+
+private:
+	const style::EmojiPan &_st;
+	SearchWithGroups _search;
+
+};
+
+} // namespace Ui