604 lines
16 KiB
C++
604 lines
16 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
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*/
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#pragma once
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#include "base/flags.h"
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namespace Fonts {
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void Start();
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QString GetOverride(const QString &familyName);
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} // namespace
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template <typename Object>
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class object_ptr;
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namespace Ui {
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inline bool InFocusChain(not_null<const QWidget*> widget) {
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if (auto top = widget->window()) {
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if (auto focused = top->focusWidget()) {
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return !widget->isHidden()
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&& (focused == widget
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|| widget->isAncestorOf(focused));
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}
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}
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return false;
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}
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template <typename ChildWidget>
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inline ChildWidget *AttachParentChild(
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not_null<QWidget*> parent,
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const object_ptr<ChildWidget> &child) {
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if (auto raw = child.data()) {
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raw->setParent(parent);
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raw->show();
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return raw;
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}
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return nullptr;
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}
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} // namespace Ui
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enum class RectPart {
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None = 0,
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TopLeft = (1 << 0),
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Top = (1 << 1),
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TopRight = (1 << 2),
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Left = (1 << 3),
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Center = (1 << 4),
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Right = (1 << 5),
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BottomLeft = (1 << 6),
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Bottom = (1 << 7),
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BottomRight = (1 << 8),
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FullTop = TopLeft | Top | TopRight,
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NoTopBottom = Left | Center | Right,
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FullBottom = BottomLeft | Bottom | BottomRight,
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NoTop = NoTopBottom | FullBottom,
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NoBottom = FullTop | NoTopBottom,
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FullLeft = TopLeft | Left | BottomLeft,
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NoLeftRight = Top | Center | Bottom,
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FullRight = TopRight | Right | BottomRight,
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NoLeft = NoLeftRight | FullRight,
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NoRight = FullLeft | NoLeftRight,
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CornersMask = TopLeft | TopRight | BottomLeft | BottomRight,
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SidesMask = Top | Bottom | Left | Right,
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Full = FullTop | NoTop,
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};
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using RectParts = base::flags<RectPart>;
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inline constexpr auto is_flag_type(RectPart) { return true; };
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inline bool IsTopCorner(RectPart corner) {
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return (corner == RectPart::TopLeft) || (corner == RectPart::TopRight);
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}
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inline bool IsBottomCorner(RectPart corner) {
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return (corner == RectPart::BottomLeft) || (corner == RectPart::BottomRight);
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}
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inline bool IsLeftCorner(RectPart corner) {
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return (corner == RectPart::TopLeft) || (corner == RectPart::BottomLeft);
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}
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inline bool IsRightCorner(RectPart corner) {
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return (corner == RectPart::TopRight) || (corner == RectPart::BottomRight);
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}
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class Painter : public QPainter {
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public:
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explicit Painter(QPaintDevice *device) : QPainter(device) {
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}
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void drawTextLeft(int x, int y, int outerw, const QString &text, int textWidth = -1) {
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QFontMetrics m(fontMetrics());
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if (rtl() && textWidth < 0) textWidth = m.width(text);
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drawText(rtl() ? (outerw - x - textWidth) : x, y + m.ascent(), text);
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}
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void drawTextRight(int x, int y, int outerw, const QString &text, int textWidth = -1) {
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QFontMetrics m(fontMetrics());
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if (!rtl() && textWidth < 0) textWidth = m.width(text);
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drawText(rtl() ? x : (outerw - x - textWidth), y + m.ascent(), text);
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}
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void drawPixmapLeft(int x, int y, int outerw, const QPixmap &pix, const QRect &from) {
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drawPixmap(QPoint(rtl() ? (outerw - x - (from.width() / pix.devicePixelRatio())) : x, y), pix, from);
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}
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void drawPixmapLeft(const QPoint &p, int outerw, const QPixmap &pix, const QRect &from) {
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return drawPixmapLeft(p.x(), p.y(), outerw, pix, from);
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}
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void drawPixmapLeft(int x, int y, int w, int h, int outerw, const QPixmap &pix, const QRect &from) {
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drawPixmap(QRect(rtl() ? (outerw - x - w) : x, y, w, h), pix, from);
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}
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void drawPixmapLeft(const QRect &r, int outerw, const QPixmap &pix, const QRect &from) {
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return drawPixmapLeft(r.x(), r.y(), r.width(), r.height(), outerw, pix, from);
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}
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void drawPixmapLeft(int x, int y, int outerw, const QPixmap &pix) {
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drawPixmap(QPoint(rtl() ? (outerw - x - (pix.width() / pix.devicePixelRatio())) : x, y), pix);
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}
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void drawPixmapLeft(const QPoint &p, int outerw, const QPixmap &pix) {
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return drawPixmapLeft(p.x(), p.y(), outerw, pix);
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}
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void drawPixmapRight(int x, int y, int outerw, const QPixmap &pix, const QRect &from) {
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drawPixmap(QPoint(rtl() ? x : (outerw - x - (from.width() / pix.devicePixelRatio())), y), pix, from);
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}
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void drawPixmapRight(const QPoint &p, int outerw, const QPixmap &pix, const QRect &from) {
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return drawPixmapRight(p.x(), p.y(), outerw, pix, from);
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}
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void drawPixmapRight(int x, int y, int w, int h, int outerw, const QPixmap &pix, const QRect &from) {
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drawPixmap(QRect(rtl() ? x : (outerw - x - w), y, w, h), pix, from);
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}
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void drawPixmapRight(const QRect &r, int outerw, const QPixmap &pix, const QRect &from) {
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return drawPixmapRight(r.x(), r.y(), r.width(), r.height(), outerw, pix, from);
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}
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void drawPixmapRight(int x, int y, int outerw, const QPixmap &pix) {
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drawPixmap(QPoint(rtl() ? x : (outerw - x - (pix.width() / pix.devicePixelRatio())), y), pix);
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}
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void drawPixmapRight(const QPoint &p, int outerw, const QPixmap &pix) {
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return drawPixmapRight(p.x(), p.y(), outerw, pix);
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}
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void setTextPalette(const style::TextPalette &palette) {
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_textPalette = &palette;
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}
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void restoreTextPalette() {
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_textPalette = nullptr;
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}
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const style::TextPalette &textPalette() const {
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return _textPalette ? *_textPalette : st::defaultTextPalette;
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}
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private:
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const style::TextPalette *_textPalette = nullptr;
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};
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class PainterHighQualityEnabler {
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public:
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PainterHighQualityEnabler(Painter &p) : _painter(p) {
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static constexpr QPainter::RenderHint Hints[] = {
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QPainter::Antialiasing,
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QPainter::SmoothPixmapTransform,
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QPainter::TextAntialiasing,
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QPainter::HighQualityAntialiasing
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};
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auto hints = _painter.renderHints();
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for_const (auto hint, Hints) {
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if (!(hints & hint)) {
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_hints |= hint;
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}
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}
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if (_hints) {
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_painter.setRenderHints(_hints);
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}
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}
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PainterHighQualityEnabler(const PainterHighQualityEnabler &other) = delete;
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PainterHighQualityEnabler &operator=(const PainterHighQualityEnabler &other) = delete;
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~PainterHighQualityEnabler() {
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if (_hints) {
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_painter.setRenderHints(_hints, false);
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}
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}
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private:
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Painter &_painter;
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QPainter::RenderHints _hints = 0;
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};
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class TWidget;
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template <typename Base>
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class TWidgetHelper : public Base {
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public:
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using Base::Base;
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virtual QMargins getMargins() const {
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return QMargins();
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}
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void moveToLeft(int x, int y, int outerw = 0) {
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auto margins = getMargins();
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x -= margins.left();
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y -= margins.top();
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Base::move(rtl() ? ((outerw > 0 ? outerw : Base::parentWidget()->width()) - x - Base::width()) : x, y);
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}
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void moveToRight(int x, int y, int outerw = 0) {
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auto margins = getMargins();
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x -= margins.right();
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y -= margins.top();
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Base::move(rtl() ? x : ((outerw > 0 ? outerw : Base::parentWidget()->width()) - x - Base::width()), y);
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}
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void setGeometryToLeft(int x, int y, int w, int h, int outerw = 0) {
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auto margins = getMargins();
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x -= margins.left();
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y -= margins.top();
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w -= margins.left() - margins.right();
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h -= margins.top() - margins.bottom();
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Base::setGeometry(rtl() ? ((outerw > 0 ? outerw : Base::parentWidget()->width()) - x - w) : x, y, w, h);
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}
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void setGeometryToRight(int x, int y, int w, int h, int outerw = 0) {
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auto margins = getMargins();
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x -= margins.right();
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y -= margins.top();
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w -= margins.left() - margins.right();
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h -= margins.top() - margins.bottom();
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Base::setGeometry(rtl() ? x : ((outerw > 0 ? outerw : Base::parentWidget()->width()) - x - w), y, w, h);
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}
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QPoint myrtlpoint(int x, int y) const {
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return rtlpoint(x, y, Base::width());
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}
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QPoint myrtlpoint(const QPoint point) const {
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return rtlpoint(point, Base::width());
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}
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QRect myrtlrect(int x, int y, int w, int h) const {
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return rtlrect(x, y, w, h, Base::width());
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}
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QRect myrtlrect(const QRect &rect) const {
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return rtlrect(rect, Base::width());
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}
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void rtlupdate(const QRect &rect) {
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Base::update(myrtlrect(rect));
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}
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void rtlupdate(int x, int y, int w, int h) {
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Base::update(myrtlrect(x, y, w, h));
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}
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QPoint mapFromGlobal(const QPoint &point) const {
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return Base::mapFromGlobal(point);
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}
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QPoint mapToGlobal(const QPoint &point) const {
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return Base::mapToGlobal(point);
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}
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QRect mapFromGlobal(const QRect &rect) const {
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return QRect(mapFromGlobal(rect.topLeft()), rect.size());
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}
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QRect mapToGlobal(const QRect &rect) const {
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return QRect(mapToGlobal(rect.topLeft()), rect.size());
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}
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protected:
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void enterEvent(QEvent *e) final override {
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if (auto parent = tparent()) {
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parent->leaveToChildEvent(e, this);
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}
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return enterEventHook(e);
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}
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virtual void enterEventHook(QEvent *e) {
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return Base::enterEvent(e);
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}
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void leaveEvent(QEvent *e) final override {
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if (auto parent = tparent()) {
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parent->enterFromChildEvent(e, this);
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}
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return leaveEventHook(e);
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}
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virtual void leaveEventHook(QEvent *e) {
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return Base::leaveEvent(e);
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}
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// e - from enterEvent() of child TWidget
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virtual void leaveToChildEvent(QEvent *e, QWidget *child) {
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}
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// e - from leaveEvent() of child TWidget
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virtual void enterFromChildEvent(QEvent *e, QWidget *child) {
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}
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private:
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TWidget *tparent() {
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return qobject_cast<TWidget*>(Base::parentWidget());
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}
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const TWidget *tparent() const {
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return qobject_cast<const TWidget*>(Base::parentWidget());
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}
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template <typename OtherBase>
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friend class TWidgetHelper;
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};
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class TWidget : public TWidgetHelper<QWidget> {
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Q_OBJECT
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public:
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TWidget(QWidget *parent = nullptr) : TWidgetHelper<QWidget>(parent) {
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}
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virtual void grabStart() {
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}
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virtual void grabFinish() {
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}
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bool inFocusChain() const {
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return Ui::InFocusChain(this);
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}
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void hideChildren() {
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for (auto child : children()) {
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if (child->isWidgetType()) {
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static_cast<QWidget*>(child)->hide();
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}
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}
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}
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void showChildren() {
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for (auto child : children()) {
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if (child->isWidgetType()) {
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static_cast<QWidget*>(child)->show();
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}
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}
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}
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// Get the size of the widget as it should be.
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// Negative return value means no default width.
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virtual int naturalWidth() const {
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return -1;
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}
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// Count new height for width=newWidth and resize to it.
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void resizeToWidth(int newWidth) {
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auto margins = getMargins();
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auto fullWidth = margins.left() + newWidth + margins.right();
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auto fullHeight = margins.top() + resizeGetHeight(newWidth) + margins.bottom();
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auto newSize = QSize(fullWidth, fullHeight);
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if (newSize != size()) {
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resize(newSize);
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update();
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}
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}
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// Resize to minimum of natural width and available width.
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void resizeToNaturalWidth(int newWidth) {
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auto maxWidth = naturalWidth();
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resizeToWidth((maxWidth >= 0) ? qMin(newWidth, maxWidth) : newWidth);
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}
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QRect rectNoMargins() const {
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return rect().marginsRemoved(getMargins());
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}
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int widthNoMargins() const {
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return rectNoMargins().width();
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}
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int heightNoMargins() const {
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return rectNoMargins().height();
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}
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int bottomNoMargins() const {
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auto rectWithoutMargins = rectNoMargins();
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return y() + rectWithoutMargins.y() + rectWithoutMargins.height();
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}
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QSize sizeNoMargins() const {
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return rectNoMargins().size();
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}
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// Updates the area that is visible inside the scroll container.
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void setVisibleTopBottom(int visibleTop, int visibleBottom) {
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auto max = height();
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visibleTopBottomUpdated(
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snap(visibleTop, 0, max),
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snap(visibleBottom, 0, max));
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}
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signals:
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// Child widget is responsible for emitting this signal.
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void heightUpdated();
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protected:
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void setChildVisibleTopBottom(
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TWidget *child,
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int visibleTop,
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int visibleBottom) {
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if (child) {
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auto top = child->y();
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child->setVisibleTopBottom(
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visibleTop - top,
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visibleBottom - top);
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}
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}
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// Resizes content and counts natural widget height for the desired width.
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virtual int resizeGetHeight(int newWidth) {
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return heightNoMargins();
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}
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virtual void visibleTopBottomUpdated(
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int visibleTop,
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int visibleBottom) {
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}
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};
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template <typename Widget>
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QPointer<Widget> make_weak(Widget *object) {
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return QPointer<Widget>(object);
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}
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template <typename Widget>
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QPointer<const Widget> make_weak(const Widget *object) {
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return QPointer<const Widget>(object);
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}
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void myEnsureResized(QWidget *target);
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QPixmap myGrab(TWidget *target, QRect rect = QRect(), QColor bg = QColor(255, 255, 255, 0));
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QImage myGrabImage(TWidget *target, QRect rect = QRect(), QColor bg = QColor(255, 255, 255, 0));
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class SingleQueuedInvokation : public QObject {
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public:
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SingleQueuedInvokation(base::lambda<void()> callback) : _callback(callback) {
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}
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void call() {
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if (_pending.testAndSetAcquire(0, 1)) {
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InvokeQueued(this, [this] {
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if (_pending.testAndSetRelease(1, 0)) {
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_callback();
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}
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});
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}
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}
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private:
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base::lambda<void()> _callback;
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QAtomicInt _pending = { 0 };
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};
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// Smart pointer for QObject*, has move semantics, destroys object if it doesn't have a parent.
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template <typename Object>
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class object_ptr {
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public:
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object_ptr(std::nullptr_t) noexcept {
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}
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// No default constructor, but constructors with at least
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// one argument are simply make functions.
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template <typename Parent, typename... Args>
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explicit object_ptr(Parent &&parent, Args&&... args)
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: _object(new Object(std::forward<Parent>(parent), std::forward<Args>(args)...)) {
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}
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static object_ptr<Object> fromRaw(Object *value) noexcept {
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object_ptr<Object> result = { nullptr };
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result._object = value;
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return result;
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}
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object_ptr(const object_ptr &other) = delete;
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object_ptr &operator=(const object_ptr &other) = delete;
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object_ptr(object_ptr &&other) noexcept : _object(base::take(other._object)) {
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}
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object_ptr &operator=(object_ptr &&other) noexcept {
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auto temp = std::move(other);
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destroy();
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std::swap(_object, temp._object);
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return *this;
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}
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template <
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typename OtherObject,
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typename = std::enable_if_t<
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std::is_base_of_v<Object, OtherObject>>>
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object_ptr(object_ptr<OtherObject> &&other) noexcept
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: _object(base::take(other._object)) {
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}
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template <
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typename OtherObject,
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typename = std::enable_if_t<
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std::is_base_of_v<Object, OtherObject>>>
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object_ptr &operator=(object_ptr<OtherObject> &&other) noexcept {
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_object = base::take(other._object);
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return *this;
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}
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object_ptr &operator=(std::nullptr_t) noexcept {
|
|
_object = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
// So we can pass this pointer to methods like connect().
|
|
Object *data() const noexcept {
|
|
return static_cast<Object*>(_object.data());
|
|
}
|
|
operator Object*() const noexcept {
|
|
return data();
|
|
}
|
|
|
|
explicit operator bool() const noexcept {
|
|
return _object != nullptr;
|
|
}
|
|
|
|
Object *operator->() const noexcept {
|
|
return data();
|
|
}
|
|
Object &operator*() const noexcept {
|
|
return *data();
|
|
}
|
|
|
|
// Use that instead "= new Object(parent, ...)"
|
|
template <typename Parent, typename... Args>
|
|
Object *create(Parent &&parent, Args&&... args) {
|
|
destroy();
|
|
_object = new Object(
|
|
std::forward<Parent>(parent),
|
|
std::forward<Args>(args)...);
|
|
return data();
|
|
}
|
|
void destroy() noexcept {
|
|
delete base::take(_object);
|
|
}
|
|
void destroyDelayed() {
|
|
if (_object) {
|
|
if (auto widget = base::up_cast<QWidget*>(data())) {
|
|
widget->hide();
|
|
}
|
|
base::take(_object)->deleteLater();
|
|
}
|
|
}
|
|
|
|
~object_ptr() noexcept {
|
|
if (auto pointer = _object) {
|
|
if (!pointer->parent()) {
|
|
destroy();
|
|
}
|
|
}
|
|
}
|
|
|
|
template <typename ResultType, typename SourceType>
|
|
friend object_ptr<ResultType> static_object_cast(
|
|
object_ptr<SourceType> source);
|
|
|
|
private:
|
|
template <typename OtherObject>
|
|
friend class object_ptr;
|
|
|
|
QPointer<QObject> _object;
|
|
|
|
};
|
|
|
|
template <typename ResultType, typename SourceType>
|
|
inline object_ptr<ResultType> static_object_cast(
|
|
object_ptr<SourceType> source) {
|
|
auto result = object_ptr<ResultType>(nullptr);
|
|
result._object = static_cast<ResultType*>(
|
|
base::take(source._object).data());
|
|
return std::move(result);
|
|
}
|
|
|
|
void sendSynteticMouseEvent(
|
|
QWidget *widget,
|
|
QEvent::Type type,
|
|
Qt::MouseButton button,
|
|
const QPoint &globalPoint);
|
|
|
|
inline void sendSynteticMouseEvent(
|
|
QWidget *widget,
|
|
QEvent::Type type,
|
|
Qt::MouseButton button) {
|
|
return sendSynteticMouseEvent(widget, type, button, QCursor::pos());
|
|
}
|