Added button for poll voting to media view.

Telegram/SourceFiles/media/view/media_view.style

@@ -121,6 +121,12 @@ mediaviewMore: icon {{ "title_menu_dots", mediaviewControlFg }};
 mediaviewRecognize: icon {{ "mediaview/recognize", mediaviewControlFg }};
 mediaviewDraw: icon {{ "mediaview/draw", mediaviewControlFg }};
 
+mediaviewVoteButton: RoundButton(defaultActiveButton) {
+	height: 36px;
+	radius: 18px;
+}
+mediaviewVoteButtonMargin: 8px;
+
 mediaviewFileRed: icon {
 	{ size(25px, 25px), mediaviewFileBg },
 	{ "mediaview/file_corner", mediaviewFileRedCornerFg },

Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp

@@ -10,6 +10,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "apiwrap.h"
 #include "api/api_attached_stickers.h"
 #include "api/api_peer_photo.h"
+#include "api/api_polls.h"
 #include "base/qt/qt_common_adapters.h"
 #include "base/timer_rpl.h"
 #include "lang/lang_keys.h"
@@ -100,6 +101,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "styles/style_menu_icons.h"
 #include "platform/platform_text_recognition.h"
 
+#include <QGraphicsOpacityEffect>
+
 #ifdef Q_OS_MAC
 #include "platform/mac/touchbar/mac_touchbar_media_view.h"
 #endif // Q_OS_MAC
@@ -1629,6 +1632,8 @@ void OverlayWidget::resizeCenteredControls() {
 
 	refreshClipControllerGeometry();
 	refreshSponsoredButtonGeometry();
+	refreshVoteButton();
+	refreshVoteButtonGeometry();
 	refreshCaptionGeometry();
 	refreshSponsoredButtonWidth();
 }
@@ -1657,6 +1662,8 @@ void OverlayWidget::refreshCaptionGeometry() {
 		? (_y + _h)
 		: _sponsoredButton
 		? (_sponsoredButton->y() - st::mediaviewCaptionMargin.height())
+		: _voteButton
+		? (_voteButton->y() - st::mediaviewCaptionMargin.height())
 		: (_streamed && _streamed->controls)
 		? (_streamed->controls->y() - st::mediaviewCaptionMargin.height())
 		: _groupThumbs
@@ -1735,6 +1742,88 @@ void OverlayWidget::refreshSponsoredButtonWidth() {
 		_sponsoredButton->y());
 }
 
+const PollAnswer *OverlayWidget::currentPollAnswer() const {
+	if (!_message || !_session) {
+		return nullptr;
+	}
+	const auto media = _message->media();
+	if (!media) {
+		return nullptr;
+	}
+	const auto poll = media->poll();
+	if (!poll || (!_photo && !_document)) {
+		return nullptr;
+	}
+	const auto current = _photo
+		? WebPageCollage::Item(_photo)
+		: WebPageCollage::Item(_document);
+	for (const auto &answer : poll->answers) {
+		const auto candidate = PollAnswerMediaItem(poll, answer);
+		if (candidate && (*candidate == current)) {
+			return &answer;
+		}
+	}
+	return nullptr;
+}
+
+void OverlayWidget::refreshVoteButton() {
+	const auto answer = currentPollAnswer();
+	const auto media = _message ? _message->media() : nullptr;
+	const auto poll = media ? media->poll() : nullptr;
+	const auto show = answer
+		&& poll
+		&& !answer->chosen
+		&& !poll->closed()
+		&& !poll->voted()
+		&& poll->sendingVotes.empty();
+	if (!show) {
+		if (_voteButton) {
+			_voteButton.destroy();
+		}
+		return;
+	}
+	if (!_voteButton) {
+		using TextTransform = Ui::RoundButton::TextTransform;
+		_voteButton.create(
+			_body,
+			tr::lng_polls_submit_votes(),
+			st::mediaviewVoteButton);
+		_voteButton->setTextTransform(TextTransform::NoTransform);
+		const auto effect = Ui::CreateChild<PrintDead<QGraphicsOpacityEffect>>(
+			_voteButton.data());
+		effect->setOpacity(_controlsOpacity.current());
+		_voteButton->setGraphicsEffect(effect);
+		const auto itemId = _message->fullId();
+		const auto option = answer->option;
+		_voteButton->setClickedCallback([=] {
+			if (_session) {
+				_session->api().polls().sendVotes(itemId, { option });
+				_voteButton.destroy();
+				refreshCaptionGeometry();
+			}
+		});
+	}
+	_voteButton->show();
+}
+
+void OverlayWidget::refreshVoteButtonGeometry() {
+	if (!_voteButton) {
+		return;
+	}
+	const auto controllerBottom = (_groupThumbs && !_fullScreenVideo)
+		? _groupThumbsTop
+		: height();
+	_voteButton->moveToLeft(
+		(width() - _voteButton->width()) / 2,
+		controllerBottom
+			- ((_streamed && _streamed->controls)
+				? (_streamed->controls->height()
+					+ st::mediaviewCaptionPadding.bottom())
+				: 0)
+			- _voteButton->height()
+			- st::mediaviewVoteButtonMargin);
+}
+
 void OverlayWidget::fillContextMenuActions(
 		const Ui::Menu::MenuCallback &addAction) {
 	if (_message && _message->isSponsored()) {
@@ -2060,6 +2149,15 @@ bool OverlayWidget::updateControlsAnimation(crl::time now) {
 			Qt::WA_TransparentForMouseEvents,
 			value < 1);
 	}
+	if (_voteButton) {
+		const auto value = _controlsOpacity.current();
+		if (const auto e = _voteButton->graphicsEffect()) {
+			static_cast<QGraphicsOpacityEffect*>(e)->setOpacity(value);
+		}
+		_voteButton->setAttribute(
+			Qt::WA_TransparentForMouseEvents,
+			value < 1);
+	}
 	_helper->setControlsOpacity(_controlsOpacity.current());
 	const auto content = finalContentRect();
 	const auto siblingType = (_over == Over::LeftStories)
@@ -7156,6 +7254,7 @@ void OverlayWidget::clearBeforeHide() {
 	_groupThumbs = nullptr;
 	_groupThumbsRect = QRect();
 	_sponsoredButton = nullptr;
+	_voteButton.destroy();
 	_showRecognitionResults = false;
 }
 
@@ -7170,6 +7269,7 @@ void OverlayWidget::clearAfterHide() {
 	_radial.stop();
 	_staticContent = QImage();
 	_themePreview = nullptr;
+	_voteButton.destroyDelayed();
 	_themeApply.destroyDelayed();
 	_themeCancel.destroyDelayed();
 	_themeShare.destroyDelayed();

Telegram/SourceFiles/media/view/media_view_overlay_widget.h

@@ -23,6 +23,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "platform/platform_text_recognition.h"
 
 class History;
+struct PollAnswer;
 
 namespace anim {
 enum class activation : uchar;
@@ -437,6 +438,10 @@ private:
 	void refreshSponsoredButtonGeometry();
 	void refreshSponsoredButtonWidth();
 
+	void refreshVoteButton();
+	void refreshVoteButtonGeometry();
+	[[nodiscard]] const PollAnswer *currentPollAnswer() const;
+
 	void documentUpdated(not_null<DocumentData*> document);
 	void changingMsgId(FullMsgId newId, MsgId oldId);
 
@@ -741,6 +746,7 @@ private:
 	base::Timer _dropdownShowTimer;
 
 	base::unique_qptr<SponsoredButton> _sponsoredButton;
+	object_ptr<Ui::RoundButton> _voteButton = { nullptr };
 
 	bool _receiveMouse = true;
 	bool _processingKeyPress = false;