485 lines
17 KiB
C++
485 lines
17 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2021
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include "td/telegram/BackgroundType.h"
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#include "td/utils/HttpUrl.h"
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#include "td/utils/logging.h"
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#include "td/utils/misc.h"
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#include "td/utils/Slice.h"
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#include "td/utils/SliceBuilder.h"
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namespace td {
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static string get_color_hex_string(int32 color) {
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string result;
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for (int i = 20; i >= 0; i -= 4) {
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result += "0123456789abcdef"[(color >> i) & 0xF];
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}
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return result;
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}
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static bool is_valid_color(int32 color) {
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return 0 <= color && color <= 0xFFFFFF;
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}
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static bool is_valid_rotation_angle(int32 rotation_angle) {
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return 0 <= rotation_angle && rotation_angle < 360 && rotation_angle % 45 == 0;
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}
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BackgroundFill::BackgroundFill(const telegram_api::wallPaperSettings *settings) {
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if (settings == nullptr) {
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return;
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}
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auto flags = settings->flags_;
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if ((flags & telegram_api::wallPaperSettings::BACKGROUND_COLOR_MASK) != 0) {
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top_color = settings->background_color_;
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if (!is_valid_color(top_color)) {
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LOG(ERROR) << "Receive " << to_string(*settings);
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top_color = 0;
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}
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}
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if ((flags & telegram_api::wallPaperSettings::FOURTH_BACKGROUND_COLOR_MASK) != 0 ||
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(flags & telegram_api::wallPaperSettings::THIRD_BACKGROUND_COLOR_MASK) != 0) {
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bottom_color = settings->second_background_color_;
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if (!is_valid_color(bottom_color)) {
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LOG(ERROR) << "Receive " << to_string(*settings);
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bottom_color = 0;
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}
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third_color = settings->third_background_color_;
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if (!is_valid_color(third_color)) {
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LOG(ERROR) << "Receive " << to_string(*settings);
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third_color = 0;
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}
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if ((flags & telegram_api::wallPaperSettings::FOURTH_BACKGROUND_COLOR_MASK) != 0) {
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fourth_color = settings->fourth_background_color_;
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if (!is_valid_color(fourth_color)) {
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LOG(ERROR) << "Receive " << to_string(*settings);
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fourth_color = 0;
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}
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}
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} else if ((flags & telegram_api::wallPaperSettings::SECOND_BACKGROUND_COLOR_MASK) != 0) {
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bottom_color = settings->second_background_color_;
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if (!is_valid_color(bottom_color)) {
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LOG(ERROR) << "Receive " << to_string(*settings);
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bottom_color = 0;
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}
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rotation_angle = settings->rotation_;
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if (!is_valid_rotation_angle(rotation_angle)) {
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LOG(ERROR) << "Receive " << to_string(*settings);
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rotation_angle = 0;
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}
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}
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}
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static Result<BackgroundFill> get_background_fill(const td_api::BackgroundFill *fill) {
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if (fill == nullptr) {
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return Status::Error(400, "Background fill info must be non-empty");
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}
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switch (fill->get_id()) {
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case td_api::backgroundFillSolid::ID: {
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auto solid = static_cast<const td_api::backgroundFillSolid *>(fill);
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if (!is_valid_color(solid->color_)) {
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return Status::Error(400, "Invalid solid fill color value");
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}
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return BackgroundFill(solid->color_);
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}
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case td_api::backgroundFillGradient::ID: {
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auto gradient = static_cast<const td_api::backgroundFillGradient *>(fill);
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if (!is_valid_color(gradient->top_color_)) {
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return Status::Error(400, "Invalid top gradient color value");
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}
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if (!is_valid_color(gradient->bottom_color_)) {
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return Status::Error(400, "Invalid bottom gradient color value");
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}
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if (!is_valid_rotation_angle(gradient->rotation_angle_)) {
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return Status::Error(400, "Invalid rotation angle value");
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}
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return BackgroundFill(gradient->top_color_, gradient->bottom_color_, gradient->rotation_angle_);
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}
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case td_api::backgroundFillFreeformGradient::ID: {
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auto freeform = static_cast<const td_api::backgroundFillFreeformGradient *>(fill);
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if (freeform->colors_.size() != 3 && freeform->colors_.size() != 4) {
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return Status::Error(400, "Wrong number of gradient colors");
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}
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for (auto &color : freeform->colors_) {
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if (!is_valid_color(color)) {
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return Status::Error(400, "Invalid freeform gradient color value");
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}
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}
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return BackgroundFill(freeform->colors_[0], freeform->colors_[1], freeform->colors_[2],
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freeform->colors_.size() == 3 ? -1 : freeform->colors_[3]);
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}
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default:
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UNREACHABLE();
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return {};
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}
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}
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Result<BackgroundFill> BackgroundFill::get_background_fill(Slice name) {
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name = name.substr(0, name.find('#'));
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Slice parameters;
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auto parameters_pos = name.find('?');
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if (parameters_pos != Slice::npos) {
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parameters = name.substr(parameters_pos + 1);
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name = name.substr(0, parameters_pos);
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}
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auto get_color = [](Slice color_string) -> Result<int32> {
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auto r_color = hex_to_integer_safe<uint32>(color_string);
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if (r_color.is_error() || color_string.size() > 6) {
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return Status::Error(400, "WALLPAPER_INVALID");
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}
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return static_cast<int32>(r_color.ok());
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};
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size_t hyphen_pos = name.find('-');
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if (name.find('~') < name.size()) {
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vector<Slice> color_strings = full_split(name, '~');
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CHECK(color_strings.size() >= 2);
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if (color_strings.size() == 2) {
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hyphen_pos = color_strings[0].size();
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} else {
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if (color_strings.size() > 4) {
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return Status::Error(400, "WALLPAPER_INVALID");
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}
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TRY_RESULT(first_color, get_color(color_strings[0]));
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TRY_RESULT(second_color, get_color(color_strings[1]));
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TRY_RESULT(third_color, get_color(color_strings[2]));
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int32 fourth_color = -1;
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if (color_strings.size() == 4) {
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TRY_RESULT_ASSIGN(fourth_color, get_color(color_strings[3]));
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}
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return BackgroundFill(first_color, second_color, third_color, fourth_color);
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}
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}
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if (hyphen_pos < name.size()) {
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TRY_RESULT(top_color, get_color(name.substr(0, hyphen_pos)));
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TRY_RESULT(bottom_color, get_color(name.substr(hyphen_pos + 1)));
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int32 rotation_angle = 0;
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Slice prefix("rotation=");
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if (begins_with(parameters, prefix)) {
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rotation_angle = to_integer<int32>(parameters.substr(prefix.size()));
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if (!is_valid_rotation_angle(rotation_angle)) {
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rotation_angle = 0;
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}
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}
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return BackgroundFill(top_color, bottom_color, rotation_angle);
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}
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TRY_RESULT(color, get_color(name));
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return BackgroundFill(color);
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}
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static string get_background_fill_color_hex_string(const BackgroundFill &fill, bool is_first) {
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switch (fill.get_type()) {
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case BackgroundFill::Type::Solid:
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return get_color_hex_string(fill.top_color);
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case BackgroundFill::Type::Gradient:
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return PSTRING() << get_color_hex_string(fill.top_color) << '-' << get_color_hex_string(fill.bottom_color)
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<< (is_first ? '?' : '&') << "rotation=" << fill.rotation_angle;
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case BackgroundFill::Type::FreeformGradient: {
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SliceBuilder sb;
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sb << get_color_hex_string(fill.top_color) << '~' << get_color_hex_string(fill.bottom_color) << '~'
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<< get_color_hex_string(fill.third_color);
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if (fill.fourth_color != -1) {
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sb << '~' << get_color_hex_string(fill.fourth_color);
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}
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return sb.as_cslice().str();
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}
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default:
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UNREACHABLE();
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return string();
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}
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}
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static bool is_valid_intensity(int32 intensity) {
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return 0 <= intensity && intensity <= 100;
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}
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int64 BackgroundFill::get_id() const {
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CHECK(is_valid_color(top_color));
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CHECK(is_valid_color(bottom_color));
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switch (get_type()) {
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case Type::Solid:
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return static_cast<int64>(top_color) + 1;
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case Type::Gradient:
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CHECK(is_valid_rotation_angle(rotation_angle));
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return (rotation_angle / 45) * 0x1000001000001 + (static_cast<int64>(top_color) << 24) + bottom_color +
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(1 << 24) + 1;
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case Type::FreeformGradient: {
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CHECK(is_valid_color(third_color));
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CHECK(fourth_color == -1 || is_valid_color(fourth_color));
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const uint64 mul = 123456789;
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uint64 result = static_cast<uint64>(top_color);
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result = result * mul + static_cast<uint64>(bottom_color);
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result = result * mul + static_cast<uint64>(third_color);
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result = result * mul + static_cast<uint64>(fourth_color);
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return 0x8000008000008 + static_cast<int64>(result % 0x8000008000008);
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}
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default:
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UNREACHABLE();
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return 0;
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}
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}
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bool BackgroundFill::is_dark() const {
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switch (get_type()) {
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case Type::Solid:
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return (top_color & 0x808080) == 0;
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case Type::Gradient:
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return (top_color & 0x808080) == 0 && (bottom_color & 0x808080) == 0;
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case Type::FreeformGradient:
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return (top_color & 0x808080) == 0 && (bottom_color & 0x808080) == 0 && (third_color & 0x808080) == 0 &&
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(fourth_color == -1 || (fourth_color & 0x808080) == 0);
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default:
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UNREACHABLE();
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return 0;
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}
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}
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bool BackgroundFill::is_valid_id(int64 id) {
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return 0 < id && id < 0x8000008000008 * 2;
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}
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bool operator==(const BackgroundFill &lhs, const BackgroundFill &rhs) {
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return lhs.top_color == rhs.top_color && lhs.bottom_color == rhs.bottom_color &&
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lhs.rotation_angle == rhs.rotation_angle && lhs.third_color == rhs.third_color &&
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lhs.fourth_color == rhs.fourth_color;
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}
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void BackgroundType::apply_parameters_from_link(Slice name) {
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const auto query = parse_url_query(name);
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is_blurred = false;
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is_moving = false;
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auto modes = full_split(query.get_arg("mode"), ' ');
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for (auto &mode : modes) {
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if (type != Type::Pattern && to_lower(mode) == "blur") {
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is_blurred = true;
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}
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if (to_lower(mode) == "motion") {
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is_moving = true;
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}
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}
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if (type == Type::Pattern) {
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intensity = -1;
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auto intensity_arg = query.get_arg("intensity");
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if (!intensity_arg.empty()) {
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intensity = to_integer<int32>(intensity_arg);
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}
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if (!is_valid_intensity(intensity)) {
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intensity = 50;
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}
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auto bg_color = query.get_arg("bg_color");
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if (!bg_color.empty()) {
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auto r_fill = BackgroundFill::get_background_fill(
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PSLICE() << url_encode(bg_color) << "?rotation=" << url_encode(query.get_arg("rotation")));
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if (r_fill.is_ok()) {
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fill = r_fill.move_as_ok();
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}
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}
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}
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}
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string BackgroundType::get_link() const {
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string mode;
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if (is_blurred) {
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mode = "blur";
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}
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if (is_moving) {
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if (!mode.empty()) {
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mode += '+';
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}
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mode += "motion";
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}
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switch (type) {
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case BackgroundType::Type::Wallpaper: {
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if (!mode.empty()) {
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return PSTRING() << "mode=" << mode;
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}
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return string();
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}
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case BackgroundType::Type::Pattern: {
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string link = PSTRING() << "intensity=" << intensity
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<< "&bg_color=" << get_background_fill_color_hex_string(fill, false);
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if (!mode.empty()) {
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link += "&mode=";
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link += mode;
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}
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return link;
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}
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case BackgroundType::Type::Fill:
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return get_background_fill_color_hex_string(fill, true);
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default:
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UNREACHABLE();
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return string();
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}
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}
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bool operator==(const BackgroundType &lhs, const BackgroundType &rhs) {
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return lhs.type == rhs.type && lhs.is_blurred == rhs.is_blurred && lhs.is_moving == rhs.is_moving &&
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lhs.intensity == rhs.intensity && lhs.fill == rhs.fill;
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}
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static StringBuilder &operator<<(StringBuilder &string_builder, const BackgroundType::Type &type) {
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switch (type) {
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case BackgroundType::Type::Wallpaper:
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return string_builder << "Wallpaper";
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case BackgroundType::Type::Pattern:
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return string_builder << "Pattern";
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case BackgroundType::Type::Fill:
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return string_builder << "Fill";
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default:
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UNREACHABLE();
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return string_builder;
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}
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}
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StringBuilder &operator<<(StringBuilder &string_builder, const BackgroundType &type) {
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return string_builder << "type " << type.type << '[' << type.get_link() << ']';
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}
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Result<BackgroundType> get_background_type(const td_api::BackgroundType *type) {
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if (type == nullptr) {
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return Status::Error(400, "Type must be non-empty");
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}
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BackgroundType result;
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switch (type->get_id()) {
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case td_api::backgroundTypeWallpaper::ID: {
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auto wallpaper = static_cast<const td_api::backgroundTypeWallpaper *>(type);
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result = BackgroundType(wallpaper->is_blurred_, wallpaper->is_moving_);
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break;
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}
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case td_api::backgroundTypePattern::ID: {
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auto pattern = static_cast<const td_api::backgroundTypePattern *>(type);
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TRY_RESULT(background_fill, get_background_fill(pattern->fill_.get()));
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if (!is_valid_intensity(pattern->intensity_)) {
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return Status::Error(400, "Wrong intensity value");
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}
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result = BackgroundType(pattern->is_moving_, std::move(background_fill), pattern->intensity_);
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break;
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}
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case td_api::backgroundTypeFill::ID: {
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auto fill = static_cast<const td_api::backgroundTypeFill *>(type);
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TRY_RESULT(background_fill, get_background_fill(fill->fill_.get()));
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result = BackgroundType(std::move(background_fill));
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break;
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}
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default:
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UNREACHABLE();
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}
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return result;
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}
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BackgroundType get_background_type(bool is_pattern,
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telegram_api::object_ptr<telegram_api::wallPaperSettings> settings) {
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bool is_blurred = false;
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bool is_moving = false;
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BackgroundFill fill(settings.get());
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int32 intensity = 0;
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if (settings) {
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auto flags = settings->flags_;
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is_blurred = (flags & telegram_api::wallPaperSettings::BLUR_MASK) != 0;
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is_moving = (flags & telegram_api::wallPaperSettings::MOTION_MASK) != 0;
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if ((flags & telegram_api::wallPaperSettings::INTENSITY_MASK) != 0) {
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intensity = settings->intensity_;
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if (!is_valid_intensity(intensity)) {
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LOG(ERROR) << "Receive " << to_string(settings);
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intensity = 0;
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}
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}
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}
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if (is_pattern) {
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return BackgroundType(is_moving, fill, intensity);
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} else {
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return BackgroundType(is_blurred, is_moving);
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}
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}
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static td_api::object_ptr<td_api::BackgroundFill> get_background_fill_object(const BackgroundFill &fill) {
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switch (fill.get_type()) {
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case BackgroundFill::Type::Solid:
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return td_api::make_object<td_api::backgroundFillSolid>(fill.top_color);
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case BackgroundFill::Type::Gradient:
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return td_api::make_object<td_api::backgroundFillGradient>(fill.top_color, fill.bottom_color,
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fill.rotation_angle);
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case BackgroundFill::Type::FreeformGradient: {
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vector<int32> colors{fill.top_color, fill.bottom_color, fill.third_color, fill.fourth_color};
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if (colors.back() == -1) {
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colors.pop_back();
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}
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return td_api::make_object<td_api::backgroundFillFreeformGradient>(std::move(colors));
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}
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default:
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UNREACHABLE();
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return nullptr;
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}
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}
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td_api::object_ptr<td_api::BackgroundType> get_background_type_object(const BackgroundType &type) {
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switch (type.type) {
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case BackgroundType::Type::Wallpaper:
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return td_api::make_object<td_api::backgroundTypeWallpaper>(type.is_blurred, type.is_moving);
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case BackgroundType::Type::Pattern:
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return td_api::make_object<td_api::backgroundTypePattern>(get_background_fill_object(type.fill), type.intensity,
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type.is_moving);
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case BackgroundType::Type::Fill:
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return td_api::make_object<td_api::backgroundTypeFill>(get_background_fill_object(type.fill));
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default:
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UNREACHABLE();
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return nullptr;
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}
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}
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telegram_api::object_ptr<telegram_api::wallPaperSettings> get_input_wallpaper_settings(const BackgroundType &type) {
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CHECK(type.is_server());
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int32 flags = 0;
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if (type.is_blurred) {
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flags |= telegram_api::wallPaperSettings::BLUR_MASK;
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}
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if (type.is_moving) {
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flags |= telegram_api::wallPaperSettings::MOTION_MASK;
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}
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switch (type.fill.get_type()) {
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case BackgroundFill::Type::FreeformGradient:
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if (type.fill.fourth_color != -1) {
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flags |= telegram_api::wallPaperSettings::FOURTH_BACKGROUND_COLOR_MASK;
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}
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flags |= telegram_api::wallPaperSettings::THIRD_BACKGROUND_COLOR_MASK;
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// fallthrough
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case BackgroundFill::Type::Gradient:
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flags |= telegram_api::wallPaperSettings::SECOND_BACKGROUND_COLOR_MASK;
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// fallthrough
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case BackgroundFill::Type::Solid:
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flags |= telegram_api::wallPaperSettings::BACKGROUND_COLOR_MASK;
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break;
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default:
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UNREACHABLE();
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}
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if (type.intensity != 0) {
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flags |= telegram_api::wallPaperSettings::INTENSITY_MASK;
|
|
}
|
|
return telegram_api::make_object<telegram_api::wallPaperSettings>(
|
|
flags, false /*ignored*/, false /*ignored*/, type.fill.top_color, type.fill.bottom_color, type.fill.third_color,
|
|
type.fill.fourth_color, type.intensity, type.fill.rotation_angle);
|
|
}
|
|
|
|
} // namespace td
|