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Telegram/ThirdParty/fcitx5-qt/qt5/platforminputcontext/fcitxtheme.h

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+/*
+ * SPDX-FileCopyrightText: 2021~2021 CSSlayer <wengxt@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+#ifndef _PLATFORMINPUTCONTEXT_FCITXTHEME_H_
+#define _PLATFORMINPUTCONTEXT_FCITXTHEME_H_
+
+#include <QColor>
+#include <QFileSystemWatcher>
+#include <QFont>
+#include <QFontMetrics>
+#include <QMargins>
+#include <QObject>
+#include <QPainter>
+#include <QPixmap>
+#include <QSettings>
+
+namespace fcitx {
+
+class BackgroundImage {
+    friend class FcitxTheme;
+
+public:
+    void load(const QString &name, QSettings &settings);
+    void loadFromValue(const QColor &border, const QColor &background,
+                       QMargins margin, int borderWidth);
+
+private:
+    void fillBackground(const QColor &border, const QColor &background,
+                        int borderWidth);
+
+    QPixmap image_, overlay_;
+    QMargins margin_, overlayClipMargin_;
+    bool hideOverlayIfOversize_ = false;
+    QString gravity_;
+    int overlayOffsetX_ = 0;
+    int overlayOffsetY_ = 0;
+};
+
+class ActionImage {
+    friend class FcitxTheme;
+
+public:
+    void load(const QString &name, QSettings &settings);
+    void reset();
+    bool valid() const { return valid_; }
+    int width() const { return image_.width(); }
+    int height() const { return image_.height(); }
+    QSize size() const { return image_.size(); }
+    const QMargins &margin() const { return margin_; }
+
+private:
+    bool valid_ = false;
+    QPixmap image_;
+    QMargins margin_;
+};
+
+class FcitxTheme : public QObject {
+    Q_OBJECT
+public:
+    FcitxTheme(QObject *parent = nullptr);
+    ~FcitxTheme();
+
+    void paint(QPainter *painter, const BackgroundImage &image, QRect region);
+    void paint(QPainter *painter, const ActionImage &image, QPoint position,
+               float alpha);
+
+    const auto &background() const { return background_; }
+    const auto &highlight() const { return highlight_; }
+    const auto &prev() const { return prev_; }
+    const auto &next() const { return next_; }
+    const auto &font() const { return font_; }
+    const auto &fontMetrics() const { return fontMetrics_; }
+    const auto &highlightBackgroundColor() const {
+        return highlightBackgroundColor_;
+    }
+    const auto &highlightColor() const { return highlightColor_; }
+    const auto &buttonAlignment() const { return buttonAlignment_; }
+    auto contentMargin() const { return contentMargin_; }
+    auto textMargin() const { return textMargin_; }
+    auto highlightClickMargin() const { return highlightClickMargin_; }
+    QMargins highlightMargin() const;
+    auto shadowMargin() const { return shadowMargin_; }
+    auto normalColor() const { return normalColor_; }
+    auto highlightCandidateColor() const { return highlightCandidateColor_; }
+    auto vertical() const { return vertical_; }
+    auto wheelForPaging() const { return wheelForPaging_; }
+
+private Q_SLOTS:
+    void configChanged();
+    void themeChanged();
+
+private:
+    QString configPath_;
+    QString themeConfigPath_;
+    QFileSystemWatcher *watcher_;
+
+    QFont font_;
+    QFontMetrics fontMetrics_{font_};
+    bool vertical_ = false;
+    bool wheelForPaging_ = true;
+    QString theme_ = "default";
+    BackgroundImage background_;
+    BackgroundImage highlight_;
+    ActionImage prev_;
+    ActionImage next_;
+
+    QColor normalColor_{Qt::black};
+    QColor highlightCandidateColor_{Qt::white};
+    bool fullWidthHighlight_ = true;
+    QColor highlightColor_{Qt::white};
+    QColor highlightBackgroundColor_{0xa5, 0xa5, 0xa5};
+    QString buttonAlignment_;
+    QMargins highlightClickMargin_;
+    QMargins contentMargin_;
+    QMargins textMargin_;
+    QMargins shadowMargin_;
+};
+
+} // namespace fcitx
+
+#endif // _PLATFORMINPUTCONTEXT_FCITXTHEME_H_