tdesktop/Telegram/SourceFiles/history/history_media.h

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/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org
Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
*/
#pragma once
enum class MediaInBubbleState {
None,
Top,
Middle,
Bottom,
};
class HistoryMedia : public HistoryElement {
public:
HistoryMedia(gsl::not_null<HistoryItem*> parent) : _parent(parent) {
}
virtual HistoryMediaType type() const = 0;
virtual QString notificationText() const {
return QString();
}
// Returns text with link-start and link-end commands for service-color highlighting.
// Example: "[link1-start]You:[link1-end] [link1-start]Photo,[link1-end] caption text"
virtual QString inDialogsText() const {
auto result = notificationText();
return result.isEmpty() ? QString() : textcmdLink(1, TextUtilities::Clean(result));
}
virtual TextWithEntities selectedText(TextSelection selection) const = 0;
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bool hasPoint(QPoint point) const {
return QRect(0, 0, _width, _height).contains(point);
}
virtual bool isDisplayed() const {
return true;
}
virtual bool isAboveMessage() const {
return false;
}
virtual bool hasTextForCopy() const {
return false;
}
virtual bool allowsFastShare() const {
return false;
}
virtual void initDimensions() = 0;
virtual void updateMessageId() {
}
virtual int resizeGetHeight(int width) {
_width = qMin(width, _maxw);
return _height;
}
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virtual void draw(Painter &p, const QRect &r, TextSelection selection, TimeMs ms) const = 0;
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virtual HistoryTextState getState(QPoint point, HistoryStateRequest request) const = 0;
virtual void updatePressed(QPoint point) {
}
virtual int32 addToOverview(AddToOverviewMethod method) {
return 0;
}
virtual void eraseFromOverview() {
}
// if we are in selecting items mode perhaps we want to
// toggle selection instead of activating the pressed link
virtual bool toggleSelectionByHandlerClick(const ClickHandlerPtr &p) const = 0;
// if we press and drag on this media should we drag the item
virtual bool dragItem() const WARN_UNUSED_RESULT {
return false;
}
virtual TextSelection adjustSelection(TextSelection selection, TextSelectType type) const WARN_UNUSED_RESULT {
return selection;
}
virtual bool consumeMessageText(const TextWithEntities &textWithEntities) WARN_UNUSED_RESULT {
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return false;
}
virtual uint16 fullSelectionLength() const WARN_UNUSED_RESULT {
return 0;
}
TextSelection skipSelection(TextSelection selection) const WARN_UNUSED_RESULT {
return internal::unshiftSelection(selection, fullSelectionLength());
}
TextSelection unskipSelection(TextSelection selection) const WARN_UNUSED_RESULT {
return internal::shiftSelection(selection, fullSelectionLength());
}
// if we press and drag this link should we drag the item
virtual bool dragItemByHandler(const ClickHandlerPtr &p) const = 0;
virtual void clickHandlerActiveChanged(const ClickHandlerPtr &p, bool active) {
}
virtual void clickHandlerPressedChanged(const ClickHandlerPtr &p, bool pressed) {
}
virtual bool uploading() const {
return false;
}
virtual std::unique_ptr<HistoryMedia> clone(HistoryItem *newParent) const = 0;
virtual DocumentData *getDocument() {
return nullptr;
}
virtual Media::Clip::Reader *getClipReader() {
return nullptr;
}
bool playInline(/*bool autoplay = false*/) {
return playInline(false);
}
virtual bool playInline(bool autoplay) {
return false;
}
virtual void stopInline() {
}
virtual bool isRoundVideoPlaying() const {
return false;
}
virtual void attachToParent() {
}
virtual void detachFromParent() {
}
virtual void updateSentMedia(const MTPMessageMedia &media) {
}
// After sending an inline result we may want to completely recreate
// the media (all media that was generated on client side, for example)
virtual bool needReSetInlineResultMedia(const MTPMessageMedia &media) {
return true;
}
virtual bool animating() const {
return false;
}
virtual bool hasReplyPreview() const {
return false;
}
virtual ImagePtr replyPreview() {
return ImagePtr();
}
virtual TextWithEntities getCaption() const {
return TextWithEntities();
}
virtual bool needsBubble() const = 0;
virtual bool customInfoLayout() const = 0;
virtual QMargins bubbleMargins() const {
return QMargins();
}
virtual bool hideForwardedFrom() const {
return false;
}
// An attach media in a web page can provide an
// additional text to be displayed below the attach.
// For example duration / progress for video messages.
virtual QString additionalInfoString() const {
return QString();
}
int currentWidth() const {
return _width;
}
void setInBubbleState(MediaInBubbleState state) {
_inBubbleState = state;
}
MediaInBubbleState inBubbleState() const {
return _inBubbleState;
}
bool isBubbleTop() const {
return (_inBubbleState == MediaInBubbleState::Top) || (_inBubbleState == MediaInBubbleState::None);
}
bool isBubbleBottom() const {
return (_inBubbleState == MediaInBubbleState::Bottom) || (_inBubbleState == MediaInBubbleState::None);
}
virtual bool skipBubbleTail() const {
return false;
}
virtual bool canEditCaption() const {
return false;
}
// Sometimes click on media in message is overloaded by the messsage:
// (for example it can open a link or a game instead of opening media)
// But the overloading click handler should be used only when media
// is already loaded (not a photo or gif waiting for load with auto
// load being disabled - in such case media should handle the click).
virtual bool isReadyForOpen() const {
return true;
}
protected:
int32 addToOneOverview(MediaOverviewType type, AddToOverviewMethod method) {
if (_parent->history()->addToOverview(type, _parent->id, method)) {
return (1 << type);
}
return 0;
}
void eraseFromOneOverview(MediaOverviewType type) {
_parent->history()->eraseFromOverview(type, _parent->id);
}
gsl::not_null<HistoryItem*> _parent;
int _width = 0;
MediaInBubbleState _inBubbleState = MediaInBubbleState::None;
};