409 lines
12 KiB
C++
409 lines
12 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "ui/image/image.h"
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#include "storage/cache/storage_cache_database.h"
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#include "data/data_session.h"
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#include "main/main_session.h"
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#include "ui/ui_utility.h"
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using namespace Images;
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namespace Images {
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namespace {
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[[nodiscard]] uint64 PixKey(int width, int height, Options options) {
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return static_cast<uint64>(width)
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| (static_cast<uint64>(height) << 24)
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| (static_cast<uint64>(options) << 48);
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}
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[[nodiscard]] uint64 SinglePixKey(Options options) {
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return PixKey(0, 0, options);
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}
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[[nodiscard]] Options OptionsByArgs(const PrepareArgs &args) {
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return args.options | (args.colored ? Option::Colorize : Option::None);
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}
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[[nodiscard]] uint64 PixKey(int width, int height, const PrepareArgs &args) {
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return PixKey(width, height, OptionsByArgs(args));
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}
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[[nodiscard]] uint64 SinglePixKey(const PrepareArgs &args) {
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return SinglePixKey(OptionsByArgs(args));
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}
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} // namespace
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QByteArray ExpandInlineBytes(const QByteArray &bytes) {
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if (bytes.size() < 3 || bytes[0] != '\x01') {
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return QByteArray();
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}
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const char header[] = "\xff\xd8\xff\xe0\x00\x10\x4a\x46\x49"
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"\x46\x00\x01\x01\x00\x00\x01\x00\x01\x00\x00\xff\xdb\x00\x43\x00\x28\x1c"
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"\x1e\x23\x1e\x19\x28\x23\x21\x23\x2d\x2b\x28\x30\x3c\x64\x41\x3c\x37\x37"
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"\x3c\x7b\x58\x5d\x49\x64\x91\x80\x99\x96\x8f\x80\x8c\x8a\xa0\xb4\xe6\xc3"
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"\xa0\xaa\xda\xad\x8a\x8c\xc8\xff\xcb\xda\xee\xf5\xff\xff\xff\x9b\xc1\xff"
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"\xff\xff\xfa\xff\xe6\xfd\xff\xf8\xff\xdb\x00\x43\x01\x2b\x2d\x2d\x3c\x35"
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"\x3c\x76\x41\x41\x76\xf8\xa5\x8c\xa5\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8"
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"\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8"
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"\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8\xf8"
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"\xf8\xf8\xf8\xf8\xf8\xff\xc0\x00\x11\x08\x00\x00\x00\x00\x03\x01\x22\x00"
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"\x02\x11\x01\x03\x11\x01\xff\xc4\x00\x1f\x00\x00\x01\x05\x01\x01\x01\x01"
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"\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x01\x02\x03\x04\x05\x06\x07\x08"
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"\x09\x0a\x0b\xff\xc4\x00\xb5\x10\x00\x02\x01\x03\x03\x02\x04\x03\x05\x05"
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"\x04\x04\x00\x00\x01\x7d\x01\x02\x03\x00\x04\x11\x05\x12\x21\x31\x41\x06"
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"\x13\x51\x61\x07\x22\x71\x14\x32\x81\x91\xa1\x08\x23\x42\xb1\xc1\x15\x52"
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"\xd1\xf0\x24\x33\x62\x72\x82\x09\x0a\x16\x17\x18\x19\x1a\x25\x26\x27\x28"
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"\x29\x2a\x34\x35\x36\x37\x38\x39\x3a\x43\x44\x45\x46\x47\x48\x49\x4a\x53"
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"\x54\x55\x56\x57\x58\x59\x5a\x63\x64\x65\x66\x67\x68\x69\x6a\x73\x74\x75"
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"\x76\x77\x78\x79\x7a\x83\x84\x85\x86\x87\x88\x89\x8a\x92\x93\x94\x95\x96"
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"\x97\x98\x99\x9a\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xb2\xb3\xb4\xb5\xb6"
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"\xb7\xb8\xb9\xba\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xd2\xd3\xd4\xd5\xd6"
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"\xd7\xd8\xd9\xda\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xf1\xf2\xf3\xf4"
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"\xf5\xf6\xf7\xf8\xf9\xfa\xff\xc4\x00\x1f\x01\x00\x03\x01\x01\x01\x01\x01"
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"\x01\x01\x01\x01\x00\x00\x00\x00\x00\x00\x01\x02\x03\x04\x05\x06\x07\x08"
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"\x09\x0a\x0b\xff\xc4\x00\xb5\x11\x00\x02\x01\x02\x04\x04\x03\x04\x07\x05"
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"\x04\x04\x00\x01\x02\x77\x00\x01\x02\x03\x11\x04\x05\x21\x31\x06\x12\x41"
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"\x51\x07\x61\x71\x13\x22\x32\x81\x08\x14\x42\x91\xa1\xb1\xc1\x09\x23\x33"
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"\x52\xf0\x15\x62\x72\xd1\x0a\x16\x24\x34\xe1\x25\xf1\x17\x18\x19\x1a\x26"
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"\x27\x28\x29\x2a\x35\x36\x37\x38\x39\x3a\x43\x44\x45\x46\x47\x48\x49\x4a"
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"\x53\x54\x55\x56\x57\x58\x59\x5a\x63\x64\x65\x66\x67\x68\x69\x6a\x73\x74"
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"\x75\x76\x77\x78\x79\x7a\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x92\x93\x94"
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"\x95\x96\x97\x98\x99\x9a\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xb2\xb3\xb4"
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"\xb5\xb6\xb7\xb8\xb9\xba\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xd2\xd3\xd4"
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"\xd5\xd6\xd7\xd8\xd9\xda\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xf2\xf3\xf4"
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"\xf5\xf6\xf7\xf8\xf9\xfa\xff\xda\x00\x0c\x03\x01\x00\x02\x11\x03\x11\x00"
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"\x3f\x00";
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const char footer[] = "\xff\xd9";
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auto real = QByteArray(header, sizeof(header) - 1);
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real[164] = bytes[1];
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real[166] = bytes[2];
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return real
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+ bytes.mid(3)
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+ QByteArray::fromRawData(footer, sizeof(footer) - 1);
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}
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QImage FromInlineBytes(const QByteArray &bytes) {
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return Read({ .content = ExpandInlineBytes(bytes) }).image;
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}
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// Thanks TDLib for code.
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QByteArray ExpandPathInlineBytes(const QByteArray &bytes) {
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auto result = QByteArray();
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result.reserve(3 * (bytes.size() + 1));
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result.append('M');
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for (unsigned char c : bytes) {
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if (c >= 128 + 64) {
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result.append("AACAAAAHAAALMAAAQASTAVAAAZ"
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"aacaaaahaaalmaaaqastava.az0123456789-,"[c - 128 - 64]);
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} else {
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if (c >= 128) {
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result.append(',');
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} else if (c >= 64) {
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result.append('-');
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}
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//char buffer[3] = { 0 }; // Unavailable on macOS < 10.15.
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//std::to_chars(buffer, buffer + 3, (c & 63));
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//result.append(buffer);
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result.append(QByteArray::number(c & 63));
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}
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}
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result.append('z');
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return result;
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}
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QPainterPath PathFromInlineBytes(const QByteArray &bytes) {
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if (bytes.isEmpty()) {
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return QPainterPath();
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}
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const auto expanded = ExpandPathInlineBytes(bytes);
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const auto path = expanded.data(); // Allows checking for '\0' by index.
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auto position = 0;
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const auto isAlpha = [](char c) {
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c |= 0x20;
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return 'a' <= c && c <= 'z';
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};
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const auto isDigit = [](char c) {
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return '0' <= c && c <= '9';
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};
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const auto skipCommas = [&] {
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while (path[position] == ',') {
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++position;
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}
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};
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const auto getNumber = [&] {
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skipCommas();
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auto sign = 1;
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if (path[position] == '-') {
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sign = -1;
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++position;
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}
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double res = 0;
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while (isDigit(path[position])) {
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res = res * 10 + path[position++] - '0';
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}
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if (path[position] == '.') {
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++position;
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double mul = 0.1;
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while (isDigit(path[position])) {
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res += (path[position] - '0') * mul;
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mul *= 0.1;
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++position;
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}
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}
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return sign * res;
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};
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auto result = QPainterPath();
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auto x = 0.;
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auto y = 0.;
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while (path[position] != '\0') {
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skipCommas();
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if (path[position] == '\0') {
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break;
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}
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while (path[position] == 'm' || path[position] == 'M') {
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auto command = path[position++];
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do {
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if (command == 'm') {
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x += getNumber();
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y += getNumber();
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} else {
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x = getNumber();
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y = getNumber();
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}
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skipCommas();
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} while (path[position] != '\0' && !isAlpha(path[position]));
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}
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auto xStart = x;
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auto yStart = y;
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result.moveTo(xStart, yStart);
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auto haveLastEndControlPoint = false;
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auto xLastEndControlPoint = 0.;
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auto yLastEndControlPoint = 0.;
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auto isClosed = false;
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auto command = '-';
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while (!isClosed) {
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skipCommas();
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if (path[position] == '\0') {
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LOG(("SVG Error: Receive unclosed path: %1"
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).arg(QString::fromLatin1(path)));
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return QPainterPath();
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}
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if (isAlpha(path[position])) {
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command = path[position++];
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}
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switch (command) {
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case 'l':
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case 'L':
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case 'h':
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case 'H':
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case 'v':
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case 'V':
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if (command == 'l' || command == 'h') {
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x += getNumber();
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} else if (command == 'L' || command == 'H') {
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x = getNumber();
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}
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if (command == 'l' || command == 'v') {
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y += getNumber();
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} else if (command == 'L' || command == 'V') {
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y = getNumber();
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}
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result.lineTo(x, y);
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haveLastEndControlPoint = false;
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break;
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case 'C':
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case 'c':
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case 'S':
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case 's': {
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auto xStartControlPoint = 0.;
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auto yStartControlPoint = 0.;
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if (command == 'S' || command == 's') {
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if (haveLastEndControlPoint) {
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xStartControlPoint = 2 * x - xLastEndControlPoint;
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yStartControlPoint = 2 * y - yLastEndControlPoint;
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} else {
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xStartControlPoint = x;
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yStartControlPoint = y;
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}
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} else {
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xStartControlPoint = getNumber();
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yStartControlPoint = getNumber();
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if (command == 'c') {
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xStartControlPoint += x;
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yStartControlPoint += y;
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}
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}
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xLastEndControlPoint = getNumber();
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yLastEndControlPoint = getNumber();
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if (command == 'c' || command == 's') {
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xLastEndControlPoint += x;
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yLastEndControlPoint += y;
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}
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haveLastEndControlPoint = true;
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if (command == 'c' || command == 's') {
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x += getNumber();
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y += getNumber();
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} else {
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x = getNumber();
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y = getNumber();
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}
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result.cubicTo(
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xStartControlPoint,
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yStartControlPoint,
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xLastEndControlPoint,
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yLastEndControlPoint,
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x,
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y);
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break;
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}
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case 'm':
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case 'M':
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--position;
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[[fallthrough]];
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case 'z':
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case 'Z':
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if (x != xStart || y != yStart) {
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x = xStart;
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y = yStart;
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result.lineTo(x, y);
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}
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isClosed = true;
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break;
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default:
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LOG(("SVG Error: Receive invalid command %1 at pos %2: %3"
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).arg(command
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).arg(position
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).arg(QString::fromLatin1(path)));
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return QPainterPath();
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}
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}
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}
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return result;
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}
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} // namespace Images
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Image::Image(const QString &path)
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: Image(Read({ .path = path }).image) {
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}
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Image::Image(const QByteArray &content)
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: Image(Read({ .content = content }).image) {
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}
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Image::Image(QImage &&data)
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: _data(data.isNull() ? Empty()->original() : std::move(data)) {
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Expects(!_data.isNull());
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}
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not_null<Image*> Image::Empty() {
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static auto result = Image([] {
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const auto factor = cIntRetinaFactor();
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auto data = QImage(
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factor,
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factor,
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QImage::Format_ARGB32_Premultiplied);
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data.fill(Qt::transparent);
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data.setDevicePixelRatio(cRetinaFactor());
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return data;
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}());
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return &result;
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}
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not_null<Image*> Image::BlankMedia() {
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static auto result = Image([] {
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const auto factor = cIntRetinaFactor();
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auto data = QImage(
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factor,
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factor,
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QImage::Format_ARGB32_Premultiplied);
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data.fill(Qt::black);
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data.setDevicePixelRatio(cRetinaFactor());
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return data;
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}());
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return &result;
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}
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QImage Image::original() const {
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return _data;
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}
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const QPixmap &Image::cached(
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int w,
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int h,
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const Images::PrepareArgs &args,
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bool single) const {
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const auto ratio = style::DevicePixelRatio();
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if (w <= 0 || !width() || !height()) {
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w = width();
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} else if (h <= 0) {
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h = std::max(int(int64(height()) * w / width()), 1) * ratio;
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w *= ratio;
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} else {
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w *= ratio;
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h *= ratio;
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}
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const auto outer = args.outer;
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const auto size = outer.isEmpty() ? QSize(w, h) : outer * ratio;
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const auto k = single ? SinglePixKey(args) : PixKey(w, h, args);
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const auto i = _cache.find(k);
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return (i != _cache.cend() && i->second.size() == size)
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? i->second
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: _cache.emplace_or_assign(k, prepare(w, h, args)).first->second;
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}
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QPixmap Image::prepare(int w, int h, const Images::PrepareArgs &args) const {
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if (_data.isNull()) {
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if (h <= 0 && height() > 0) {
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h = qRound(width() * w / float64(height()));
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}
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return Empty()->prepare(w, h, args);
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}
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auto outer = args.outer;
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if (!isNull() || outer.isEmpty()) {
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return Ui::PixmapFromImage(Prepare(_data, w, h, args));
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}
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const auto ratio = style::DevicePixelRatio();
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const auto outerw = outer.width() * ratio;
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const auto outerh = outer.height() * ratio;
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auto result = QImage(
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QSize(outerw, outerh),
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QImage::Format_ARGB32_Premultiplied);
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result.setDevicePixelRatio(ratio);
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auto p = QPainter(&result);
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if (w < outerw) {
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p.fillRect(0, 0, (outerw - w) / 2, result.height(), Qt::black);
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p.fillRect(((outerw - w) / 2) + w, 0, result.width() - (((outerw - w) / 2) + w), result.height(), Qt::black);
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}
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if (h < outerh) {
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p.fillRect(qMax(0, (outerw - w) / 2), 0, qMin(result.width(), w), (outerh - h) / 2, Qt::black);
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p.fillRect(qMax(0, (outerw - w) / 2), ((outerh - h) / 2) + h, qMin(result.width(), w), result.height() - (((outerh - h) / 2) + h), Qt::black);
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}
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p.fillRect(qMax(0, (outerw - w) / 2), qMax(0, (outerh - h) / 2), qMin(result.width(), w), qMin(result.height(), h), Qt::white);
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p.end();
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result = Round(std::move(result), args.options);
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if (args.colored) {
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result = Colored(std::move(result), *args.colored);
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}
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return Ui::PixmapFromImage(std::move(result));
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}
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