tdesktop/Telegram/SourceFiles/dialogs/ui/dialogs_message_view.cpp

435 lines
12 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "dialogs/ui/dialogs_message_view.h"
#include "history/history.h"
#include "history/history_item.h"
#include "history/view/history_view_item_preview.h"
#include "main/main_session.h"
#include "dialogs/ui/dialogs_layout.h"
#include "dialogs/ui/dialogs_topics_view.h"
#include "ui/effects/spoiler_mess.h"
#include "ui/text/text_options.h"
#include "ui/text/text_utilities.h"
#include "ui/image/image.h"
#include "ui/painter.h"
#include "core/ui_integration.h"
#include "lang/lang_keys.h"
#include "lang/lang_text_entity.h"
#include "styles/style_dialogs.h"
namespace {
constexpr auto kEmojiLoopCount = 2;
template <ushort kTag>
struct TextWithTagOffset {
TextWithTagOffset(TextWithEntities text) : text(std::move(text)) {
}
TextWithTagOffset(QString text) : text({ std::move(text) }) {
}
static TextWithTagOffset FromString(const QString &text) {
return { { text } };
}
TextWithEntities text;
int offset = -1;
};
} // namespace
namespace Lang {
template <ushort kTag>
struct ReplaceTag<TextWithTagOffset<kTag>> {
static TextWithTagOffset<kTag> Call(
TextWithTagOffset<kTag> &&original,
ushort tag,
const TextWithTagOffset<kTag> &replacement);
};
template <ushort kTag>
TextWithTagOffset<kTag> ReplaceTag<TextWithTagOffset<kTag>>::Call(
TextWithTagOffset<kTag> &&original,
ushort tag,
const TextWithTagOffset<kTag> &replacement) {
const auto replacementPosition = FindTagReplacementPosition(
original.text.text,
tag);
if (replacementPosition < 0) {
return std::move(original);
}
original.text = ReplaceTag<TextWithEntities>::Replace(
std::move(original.text),
replacement.text,
replacementPosition);
if (tag == kTag) {
original.offset = replacementPosition;
} else if (original.offset > replacementPosition) {
constexpr auto kReplaceCommandLength = 4;
const auto replacementSize = replacement.text.text.size();
original.offset += replacementSize - kReplaceCommandLength;
}
return std::move(original);
}
} // namespace Lang
namespace Dialogs::Ui {
TextWithEntities DialogsPreviewText(TextWithEntities text) {
auto result = Ui::Text::Filtered(
std::move(text),
{
EntityType::Pre,
EntityType::Code,
EntityType::Spoiler,
EntityType::StrikeOut,
EntityType::Underline,
EntityType::Italic,
EntityType::CustomEmoji,
EntityType::PlainLink,
});
for (auto &entity : result.entities) {
if (entity.type() == EntityType::Pre) {
entity = EntityInText(
EntityType::Code,
entity.offset(),
entity.length());
}
}
return result;
}
struct MessageView::LoadingContext {
std::any context;
rpl::lifetime lifetime;
};
MessageView::MessageView()
: _senderCache(st::dialogsTextWidthMin)
, _textCache(st::dialogsTextWidthMin) {
}
MessageView::~MessageView() = default;
void MessageView::itemInvalidated(not_null<const HistoryItem*> item) {
if (_textCachedFor == item.get()) {
_textCachedFor = nullptr;
}
}
bool MessageView::dependsOn(not_null<const HistoryItem*> item) const {
return (_textCachedFor == item.get());
}
bool MessageView::prepared(
not_null<const HistoryItem*> item,
Data::Forum *forum) const {
return (_textCachedFor == item.get())
&& (!forum
|| (_topics
&& _topics->forum() == forum
&& _topics->prepared()));
}
void MessageView::prepare(
not_null<const HistoryItem*> item,
Data::Forum *forum,
Fn<void()> customEmojiRepaint,
ToPreviewOptions options) {
if (!forum) {
_topics = nullptr;
} else if (!_topics || _topics->forum() != forum) {
_topics = std::make_unique<TopicsView>(forum);
_topics->prepare(item->topicRootId(), customEmojiRepaint);
} else if (!_topics->prepared()) {
_topics->prepare(item->topicRootId(), customEmojiRepaint);
}
if (_textCachedFor == item.get()) {
return;
}
options.existing = &_imagesCache;
options.ignoreTopic = true;
auto preview = item->toPreview(options);
const auto hasImages = !preview.images.empty();
const auto history = item->history();
const auto context = Core::MarkedTextContext{
.session = &history->session(),
.customEmojiRepaint = customEmojiRepaint,
.customEmojiLoopLimit = kEmojiLoopCount,
};
const auto senderTill = (preview.arrowInTextPosition > 0)
? preview.arrowInTextPosition
: preview.imagesInTextPosition;
if (hasImages && senderTill > 0) {
auto sender = Text::Mid(preview.text, 0, senderTill);
TextUtilities::Trim(sender);
_senderCache.setMarkedText(
st::dialogsTextStyle,
std::move(sender),
DialogTextOptions());
preview.text = Text::Mid(preview.text, senderTill);
} else {
_senderCache = { st::dialogsTextWidthMin };
}
TextUtilities::Trim(preview.text);
_textCache.setMarkedText(
st::dialogsTextStyle,
DialogsPreviewText(std::move(preview.text)),
DialogTextOptions(),
context);
_textCachedFor = item;
_imagesCache = std::move(preview.images);
if (!ranges::any_of(_imagesCache, &ItemPreviewImage::hasSpoiler)) {
_spoiler = nullptr;
} else if (!_spoiler) {
_spoiler = std::make_unique<SpoilerAnimation>(customEmojiRepaint);
}
if (preview.loadingContext.has_value()) {
if (!_loadingContext) {
_loadingContext = std::make_unique<LoadingContext>();
item->history()->session().downloaderTaskFinished(
) | rpl::start_with_next([=] {
_textCachedFor = nullptr;
}, _loadingContext->lifetime);
}
_loadingContext->context = std::move(preview.loadingContext);
} else {
_loadingContext = nullptr;
}
}
bool MessageView::isInTopicJump(int x, int y) const {
return _topics && _topics->isInTopicJumpArea(x, y);
}
void MessageView::addTopicJumpRipple(
QPoint origin,
not_null<TopicJumpCache*> topicJumpCache,
Fn<void()> updateCallback) {
if (_topics) {
_topics->addTopicJumpRipple(
origin,
topicJumpCache,
std::move(updateCallback));
}
}
void MessageView::stopLastRipple() {
if (_topics) {
_topics->stopLastRipple();
}
}
int MessageView::countWidth() const {
auto result = 0;
if (!_senderCache.isEmpty()) {
result += _senderCache.maxWidth();
if (!_imagesCache.empty()) {
result += st::dialogsMiniPreviewSkip
+ st::dialogsMiniPreviewRight;
}
}
if (!_imagesCache.empty()) {
result += (_imagesCache.size()
* (st::dialogsMiniPreview + st::dialogsMiniPreviewSkip))
+ st::dialogsMiniPreviewRight;
}
return result + _textCache.maxWidth();
}
void MessageView::paint(
Painter &p,
const QRect &geometry,
const PaintContext &context) const {
if (geometry.isEmpty()) {
return;
}
p.setFont(st::dialogsTextFont);
p.setPen(context.active
? st::dialogsTextFgActive
: context.selected
? st::dialogsTextFgOver
: st::dialogsTextFg);
const auto withTopic = _topics && context.st->topicsHeight;
const auto palette = &(withTopic
? (context.active
? st::dialogsTextPaletteInTopicActive
: context.selected
? st::dialogsTextPaletteInTopicOver
: st::dialogsTextPaletteInTopic)
: (context.active
? st::dialogsTextPaletteActive
: context.selected
? st::dialogsTextPaletteOver
: st::dialogsTextPalette));
auto rect = geometry;
const auto checkJump = withTopic && !context.active;
const auto jump1 = checkJump ? _topics->jumpToTopicWidth() : 0;
if (jump1) {
paintJumpToLast(p, rect, context, jump1);
} else if (_topics) {
_topics->clearTopicJumpGeometry();
}
if (withTopic) {
_topics->paint(p, rect, context);
rect.setTop(rect.top() + context.st->topicsHeight);
}
auto finalRight = rect.x() + rect.width();
if (jump1) {
rect.setWidth(rect.width() - st::forumDialogJumpArrowSkip);
finalRight -= st::forumDialogJumpArrowSkip;
}
const auto lines = rect.height() / st::dialogsTextFont->height;
if (!_senderCache.isEmpty()) {
_senderCache.draw(p, {
.position = rect.topLeft(),
.availableWidth = rect.width(),
.palette = palette,
.elisionLines = lines,
});
rect.setLeft(rect.x() + _senderCache.maxWidth());
if (!_imagesCache.empty()) {
const auto skip = st::dialogsMiniPreviewSkip
+ st::dialogsMiniPreviewRight;
rect.setLeft(rect.x() + skip);
}
}
for (const auto &image : _imagesCache) {
if (rect.width() < st::dialogsMiniPreview) {
break;
}
const auto mini = QRect(
rect.x(),
rect.y() + st::dialogsMiniPreviewTop,
st::dialogsMiniPreview,
st::dialogsMiniPreview);
if (!image.data.isNull()) {
p.drawImage(mini, image.data);
if (image.hasSpoiler()) {
const auto frame = DefaultImageSpoiler().frame(
_spoiler->index(context.now, context.paused));
FillSpoilerRect(p, mini, frame);
}
}
rect.setLeft(rect.x()
+ st::dialogsMiniPreview
+ st::dialogsMiniPreviewSkip);
}
if (!_imagesCache.empty()) {
rect.setLeft(rect.x() + st::dialogsMiniPreviewRight);
}
if (!rect.isEmpty()) {
_textCache.draw(p, {
.position = rect.topLeft(),
.availableWidth = rect.width(),
.palette = palette,
.spoiler = Text::DefaultSpoilerCache(),
.now = context.now,
.paused = context.paused,
.elisionLines = lines,
});
rect.setLeft(rect.x() + _textCache.maxWidth());
}
if (jump1) {
const auto position = st::forumDialogJumpArrowPosition
+ QPoint((rect.width() > 0) ? rect.x() : finalRight, rect.y());
(context.selected
? st::forumDialogJumpArrowOver
: st::forumDialogJumpArrow).paint(p, position, context.width);
}
}
void MessageView::paintJumpToLast(
Painter &p,
const QRect &rect,
const PaintContext &context,
int width1) const {
if (!context.topicJumpCache) {
_topics->clearTopicJumpGeometry();
return;
}
const auto width2 = countWidth() + st::forumDialogJumpArrowSkip;
const auto geometry = FillJumpToLastBg(p, {
.st = context.st,
.corners = (context.selected
? &context.topicJumpCache->over
: &context.topicJumpCache->corners),
.geometry = rect,
.bg = (context.selected
? st::dialogsRippleBg
: st::dialogsBgOver),
.width1 = width1,
.width2 = width2,
});
if (context.topicJumpSelected) {
p.setOpacity(0.1);
FillJumpToLastPrepared(p, {
.st = context.st,
.corners = &context.topicJumpCache->selected,
.bg = st::dialogsTextFg,
.prepared = geometry,
});
p.setOpacity(1.);
}
if (!_topics->changeTopicJumpGeometry(geometry)) {
auto color = st::dialogsTextFg->c;
color.setAlpha(color.alpha() / 10);
if (color.alpha() > 0) {
_topics->paintRipple(p, 0, 0, context.width, &color);
}
}
}
HistoryView::ItemPreview PreviewWithSender(
HistoryView::ItemPreview &&preview,
const QString &sender,
TextWithEntities topic) {
auto senderWithOffset = topic.empty()
? TextWithTagOffset<lt_from>::FromString(sender)
: tr::lng_dialogs_text_from_in_topic(
tr::now,
lt_from,
{ sender },
lt_topic,
std::move(topic),
TextWithTagOffset<lt_from>::FromString);
auto wrappedWithOffset = tr::lng_dialogs_text_from_wrapped(
tr::now,
lt_from,
std::move(senderWithOffset.text),
TextWithTagOffset<lt_from>::FromString);
const auto wrappedSize = wrappedWithOffset.text.text.size();
auto fullWithOffset = tr::lng_dialogs_text_with_from(
tr::now,
lt_from_part,
Ui::Text::PlainLink(std::move(wrappedWithOffset.text)),
lt_message,
std::move(preview.text),
TextWithTagOffset<lt_from_part>::FromString);
preview.text = std::move(fullWithOffset.text);
preview.arrowInTextPosition = (fullWithOffset.offset < 0
|| wrappedWithOffset.offset < 0
|| senderWithOffset.offset < 0)
? -1
: (fullWithOffset.offset
+ wrappedWithOffset.offset
+ senderWithOffset.offset
+ sender.size());
preview.imagesInTextPosition = (fullWithOffset.offset < 0)
? 0
: (fullWithOffset.offset + wrappedSize);
return std::move(preview);
}
} // namespace Dialogs::Ui