tdesktop/Telegram/SourceFiles/ui/empty_userpic.cpp

254 lines
6.4 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org
Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
*/
#include "ui/empty_userpic.h"
#include "data/data_peer.h"
#include "styles/style_history.h"
namespace Ui {
EmptyUserpic::EmptyUserpic(const style::color &color, const QString &name)
: _color(color) {
fillString(name);
}
template <typename Callback>
void EmptyUserpic::paint(
Painter &p,
int x,
int y,
int outerWidth,
int size,
Callback paintBackground) const {
x = rtl() ? (outerWidth - x - size) : x;
const auto fontsize = (size * 13) / 33;
auto font = st::historyPeerUserpicFont->f;
font.setPixelSize(fontsize);
PainterHighQualityEnabler hq(p);
p.setBrush(_color);
p.setPen(Qt::NoPen);
paintBackground();
p.setFont(font);
p.setBrush(Qt::NoBrush);
p.setPen(st::historyPeerUserpicFg);
p.drawText(QRect(x, y, size, size), _string, QTextOption(style::al_center));
}
void EmptyUserpic::paint(
Painter &p,
int x,
int y,
int outerWidth,
int size) const {
paint(p, x, y, outerWidth, size, [&p, x, y, size] {
p.drawEllipse(x, y, size, size);
});
}
void EmptyUserpic::paintRounded(Painter &p, int x, int y, int outerWidth, int size) const {
paint(p, x, y, outerWidth, size, [&p, x, y, size] {
p.drawRoundedRect(x, y, size, size, st::buttonRadius, st::buttonRadius);
});
}
void EmptyUserpic::paintSquare(Painter &p, int x, int y, int outerWidth, int size) const {
paint(p, x, y, outerWidth, size, [&p, x, y, size] {
p.fillRect(x, y, size, size, p.brush());
});
}
void EmptyUserpic::PaintSavedMessages(
Painter &p,
int x,
int y,
int outerWidth,
int size) {
const auto &bg = st::historyPeerSavedMessagesBg;
const auto &fg = st::historyPeerUserpicFg;
PaintSavedMessages(p, x, y, outerWidth, size, bg, fg);
}
void EmptyUserpic::PaintSavedMessages(
Painter &p,
int x,
int y,
int outerWidth,
int size,
const style::color &bg,
const style::color &fg) {
x = rtl() ? (outerWidth - x - size) : x;
PainterHighQualityEnabler hq(p);
p.setBrush(bg);
p.setPen(Qt::NoPen);
p.drawEllipse(x, y, size, size);
// |<----width----->|
//
// XXXXXXXXXXXXXXXXXX ---
// X X |
// X X |
// X X |
// X X height
// X XX X | ---
// X XX XX X | |
// X XX XX X | add
// X XX XX X | |
// XX XX --- ---
const auto thinkness = std::round(size * 0.055);
const auto increment = int(thinkness) % 2 + (size % 2);
const auto width = std::round(size * 0.15) * 2 + increment;
const auto height = std::round(size * 0.19) * 2 + increment;
const auto add = std::round(size * 0.064);
const auto left = x + (size - width) / 2;
const auto top = y + (size - height) / 2;
const auto right = left + width;
const auto bottom = top + height;
const auto middle = (left + right) / 2;
const auto half = (top + bottom) / 2;
p.setBrush(Qt::NoBrush);
auto pen = fg->p;
pen.setWidthF(thinkness);
pen.setCapStyle(Qt::FlatCap);
{
// XXXXXXXXXXXXXXXXXX
// X X
// X X
// X X
// X X
// X X
pen.setJoinStyle(Qt::RoundJoin);
p.setPen(pen);
QPainterPath path;
path.moveTo(left, half);
path.lineTo(left, top);
path.lineTo(right, top);
path.lineTo(right, half);
p.drawPath(path);
}
{
// X X
// X XX X
// X XX XX X
// X XX XX X
// X XX XX X
// XX XX
pen.setJoinStyle(Qt::MiterJoin);
p.setPen(pen);
QPainterPath path;
path.moveTo(left, half);
path.lineTo(left, bottom);
path.lineTo(middle, bottom - add);
path.lineTo(right, bottom);
path.lineTo(right, half);
p.drawPath(path);
}
}
StorageKey EmptyUserpic::uniqueKey() const {
auto first = 0xFFFFFFFF00000000ULL | anim::getPremultiplied(_color->c);
auto second = uint64(0);
memcpy(&second, _string.constData(), qMin(sizeof(second), _string.size() * sizeof(QChar)));
return StorageKey(first, second);
}
QPixmap EmptyUserpic::generate(int size) {
auto result = QImage(QSize(size, size) * cIntRetinaFactor(), QImage::Format_ARGB32_Premultiplied);
result.setDevicePixelRatio(cRetinaFactor());
result.fill(Qt::transparent);
{
Painter p(&result);
paint(p, 0, 0, size, size);
}
return App::pixmapFromImageInPlace(std::move(result));
}
void EmptyUserpic::fillString(const QString &name) {
QList<QString> letters;
QList<int> levels;
auto level = 0;
auto letterFound = false;
auto ch = name.constData(), end = ch + name.size();
while (ch != end) {
auto emojiLength = 0;
if (auto emoji = Ui::Emoji::Find(ch, end, &emojiLength)) {
ch += emojiLength;
} else if (ch->isHighSurrogate()) {
++ch;
if (ch != end && ch->isLowSurrogate()) {
++ch;
}
} else if (!letterFound && ch->isLetterOrNumber()) {
letterFound = true;
if (ch + 1 != end && chIsDiac(*(ch + 1))) {
letters.push_back(QString(ch, 2));
levels.push_back(level);
++ch;
} else {
letters.push_back(QString(ch, 1));
levels.push_back(level);
}
++ch;
} else {
if (*ch == ' ') {
level = 0;
letterFound = false;
} else if (letterFound && *ch == '-') {
level = 1;
letterFound = true;
}
++ch;
}
}
// We prefer the second letter to be after ' ', but it can also be after '-'.
_string = QString();
if (!letters.isEmpty()) {
_string += letters.front();
auto bestIndex = 0;
auto bestLevel = 2;
for (auto i = letters.size(); i != 1;) {
if (levels[--i] < bestLevel) {
bestIndex = i;
bestLevel = levels[i];
}
}
if (bestIndex > 0) {
_string += letters[bestIndex];
}
}
_string = _string.toUpper();
}
EmptyUserpic::~EmptyUserpic() = default;
} // namespace Ui