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Better DocumentMedia management in BackgroundBox.

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This commit is contained in:
John Preston 2020-05-21 14:32:10 +04:00
parent 97a82762ef
commit 9dba723643
1 changed files with 33 additions and 7 deletions
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40
Telegram/SourceFiles/boxes/background_box.cpp
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@ -55,26 +55,30 @@ QImage TakeMiddleSample(QImage original, QSize size) {
} // namespace
class BackgroundBox::Inner : public Ui::RpWidget, private base::Subscriber {
class BackgroundBox::Inner final
: public Ui::RpWidget
, private base::Subscriber {
public:
Inner(
QWidget *parent,
not_null<Main::Session*> session);
~Inner();
rpl::producer<Data::WallPaper> chooseEvents() const;
rpl::producer<Data::WallPaper> removeRequests() const;
void removePaper(const Data::WallPaper &data);
~Inner();
protected:
private:
void paintEvent(QPaintEvent *e) override;
void mouseMoveEvent(QMouseEvent *e) override;
void mousePressEvent(QMouseEvent *e) override;
void mouseReleaseEvent(QMouseEvent *e) override;
private:
void visibleTopBottomUpdated(
int visibleTop,
int visibleBottom) override;
struct Paper {
Data::WallPaper data;
mutable std::shared_ptr<Data::DocumentMedia> dataMedia;
@ -339,7 +343,6 @@ void BackgroundBox::Inner::validatePaperThumbnail(
original,
st::backgroundSize));
paper.thumbnail.setDevicePixelRatio(cRetinaFactor());
paper.dataMedia = nullptr;
}
void BackgroundBox::Inner::paintPaper(
@ -454,7 +457,14 @@ void BackgroundBox::Inner::mouseReleaseEvent(QMouseEvent *e) {
if (base::get_if<DeleteSelected>(&_over)) {
_backgroundRemove.fire_copy(_papers[index].data);
} else if (base::get_if<Selected>(&_over)) {
_backgroundChosen.fire_copy(_papers[index].data);
auto &paper = _papers[index];
if (!paper.dataMedia) {
if (const auto document = paper.data.document()) {
// Keep it alive while it is on the screen.
paper.dataMedia = document->createMediaView();
}
}
_backgroundChosen.fire_copy(paper.data);
}
}
} else if (!_over.has_value()) {
@ -462,6 +472,22 @@ void BackgroundBox::Inner::mouseReleaseEvent(QMouseEvent *e) {
}
}
void BackgroundBox::Inner::visibleTopBottomUpdated(
int visibleTop,
int visibleBottom) {
for (auto i = 0, count = int(_papers.size()); i != count; ++i) {
const auto row = (i / kBackgroundsInRow);
const auto height = st::backgroundSize.height();
const auto skip = st::backgroundPadding;
const auto top = skip + row * (height + skip);
const auto bottom = top + height;
if ((bottom <= visibleTop || top >= visibleBottom)
&& !_papers[i].thumbnail.isNull()) {
_papers[i].dataMedia = nullptr;
}
}
}
rpl::producer<Data::WallPaper> BackgroundBox::Inner::chooseEvents() const {
return _backgroundChosen.events();
}