129 lines
2.8 KiB
C++
129 lines
2.8 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/basic_types.h"
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#include <QtGui/QFont>
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#include <QtGui/QFontMetrics>
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#include <cmath>
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namespace style {
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namespace internal {
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void StartFonts();
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[[nodiscard]] QString GetFontOverride(int32 flags = 0);
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[[nodiscard]] QString MonospaceFont();
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void destroyFonts();
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int registerFontFamily(const QString &family);
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class FontData;
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class Font {
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public:
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Font(Qt::Initialization = Qt::Uninitialized) {
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}
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Font(int size, uint32 flags, const QString &family);
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Font(int size, uint32 flags, int family);
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FontData *operator->() const {
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return ptr;
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}
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FontData *v() const {
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return ptr;
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}
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operator bool() const {
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return !!ptr;
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}
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operator const QFont &() const;
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private:
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FontData *ptr = nullptr;
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void init(int size, uint32 flags, int family, Font *modified);
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friend void startManager();
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Font(FontData *p) : ptr(p) {
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}
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Font(int size, uint32 flags, int family, Font *modified);
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friend class FontData;
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};
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enum FontFlags {
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FontBold = 0x01,
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FontItalic = 0x02,
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FontUnderline = 0x04,
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FontStrikeOut = 0x08,
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FontSemibold = 0x10,
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FontMonospace = 0x20,
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FontDifferentFlags = 0x40,
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};
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class FontData {
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public:
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[[nodiscard]] int width(const QString &text) const {
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return int(std::ceil(_m.horizontalAdvance(text)));
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}
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[[nodiscard]] int width(const QString &text, int from, int to) const {
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return width(text.mid(from, to));
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}
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[[nodiscard]] int width(QChar ch) const {
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return int(std::ceil(_m.horizontalAdvance(ch)));
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}
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[[nodiscard]] QString elided(
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const QString &str,
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int width,
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Qt::TextElideMode mode = Qt::ElideRight) const {
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return _m.elidedText(str, mode, width);
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}
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[[nodiscard]] Font bold(bool set = true) const;
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[[nodiscard]] Font italic(bool set = true) const;
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[[nodiscard]] Font underline(bool set = true) const;
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[[nodiscard]] Font strikeout(bool set = true) const;
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[[nodiscard]] Font semibold(bool set = true) const;
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[[nodiscard]] Font monospace(bool set = true) const;
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int size() const;
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uint32 flags() const;
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int family() const;
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QFont f;
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int32 height, ascent, descent, spacew, elidew;
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private:
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mutable Font _modified[FontDifferentFlags];
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Font otherFlagsFont(uint32 flag, bool set) const;
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FontData(int size, uint32 flags, int family, Font *other);
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friend class Font;
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QFontMetricsF _m;
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int _size;
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uint32 _flags;
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int _family;
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};
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inline bool operator==(const Font &a, const Font &b) {
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return a.v() == b.v();
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}
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inline bool operator!=(const Font &a, const Font &b) {
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return a.v() != b.v();
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}
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inline Font::operator const QFont &() const {
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return ptr->f;
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}
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} // namespace internal
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} // namespace style
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