70 lines
1.6 KiB
C++
70 lines
1.6 KiB
C++
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/*
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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 "dialogs/ui/dialogs_message_view.h"
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#include "history/history_item.h"
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#include "ui/text/text_options.h"
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#include "styles/style_dialogs.h"
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namespace Dialogs::Ui {
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namespace {
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} // namespace
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MessageView::MessageView()
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: _textCache(st::dialogsTextWidthMin) {
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}
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MessageView::~MessageView() = default;
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void MessageView::itemInvalidated(not_null<const HistoryItem*> item) {
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if (_textCachedFor == item.get()) {
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_textCachedFor = nullptr;
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}
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}
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bool MessageView::dependsOn(not_null<const HistoryItem*> item) const {
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return (_textCachedFor == item.get());
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}
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void MessageView::paint(
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Painter &p,
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not_null<const HistoryItem*> item,
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const QRect &geometry,
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bool active,
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bool selected,
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ToPreviewOptions options) const {
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if (geometry.isEmpty()) {
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return;
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}
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if (_textCachedFor != item.get()) {
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const auto preview = item->toPreview(options);
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_textCache.setText(
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st::dialogsTextStyle,
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preview.text,
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DialogTextOptions());
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_textCachedFor = item;
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}
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p.setTextPalette(active
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? st::dialogsTextPaletteActive
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: selected
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? st::dialogsTextPaletteOver
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: st::dialogsTextPalette);
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p.setFont(st::dialogsTextFont);
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p.setPen(active ? st::dialogsTextFgActive : (selected ? st::dialogsTextFgOver : st::dialogsTextFg));
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_textCache.drawElided(
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p,
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geometry.left(),
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geometry.top(),
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geometry.width(),
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geometry.height() / st::dialogsTextFont->height);
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p.restoreTextPalette();
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}
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} // namespace Dialogs::Ui
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