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/*
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 "editor/photo_editor_content.h"
#include "editor/editor_crop.h"
#include "editor/editor_paint.h"
#include "history/history_drag_area.h"
#include "media/view/media_view_pip.h"
#include "storage/storage_media_prepare.h"
namespace Editor {
using Media::View::FlipSizeByRotation;
using Media::View::RotatedRect;
PhotoEditorContent::PhotoEditorContent(
not_null<Ui::RpWidget*> parent,
std::shared_ptr<Image> photo,
PhotoModifications modifications,
std::shared_ptr<Controllers> controllers,
EditorData data)
: RpWidget(parent)
, _photoSize(photo->size())
, _paint(base::make_unique_q<Paint>(
this,
modifications,
_photoSize,
std::move(controllers)))
, _crop(base::make_unique_q<Crop>(
this,
modifications,
_photoSize,
std::move(data)))
, _photo(std::move(photo))
, _modifications(modifications) {
rpl::combine(
_modifications.value(),
sizeValue()
) | rpl::start_with_next([=](
const PhotoModifications &mods, const QSize &size) {
if (size.isEmpty()) {
return;
}
const auto imageSizeF = [&] {
const auto rotatedSize =
FlipSizeByRotation(size, mods.angle);
const auto m = _crop->cropMargins();
const auto sizeForCrop = rotatedSize
- QSize(m.left() + m.right(), m.top() + m.bottom());
const auto originalSize = QSizeF(_photoSize);
if ((originalSize.width() > sizeForCrop.width())
|| (originalSize.height() > sizeForCrop.height())) {
return originalSize.scaled(
sizeForCrop,
Qt::KeepAspectRatio);
}
return originalSize;
}();
const auto imageSize = QSize(imageSizeF.width(), imageSizeF.height());
_imageRect = QRect(
QPoint(-imageSize.width() / 2, -imageSize.height() / 2),
imageSize);
_imageMatrix.reset();
_imageMatrix.translate(size.width() / 2, size.height() / 2);
if (mods.flipped) {
_imageMatrix.scale(-1, 1);
}
_imageMatrix.rotate(mods.angle);
const auto geometry = _imageMatrix.mapRect(_imageRect);
_crop->applyTransform(
geometry + _crop->cropMargins(),
mods.angle,
mods.flipped, imageSizeF);
_paint->applyTransform(geometry, mods.angle, mods.flipped);
_innerRect = geometry;
}, lifetime());
paintRequest(
) | rpl::start_with_next([=](const QRect &clip) {
auto p = QPainter(this);
p.fillRect(clip, Qt::transparent);
p.setTransform(_imageMatrix);
p.drawPixmap(_imageRect, _photo->pix(_imageRect.size()));
}, lifetime());
setupDragArea();
}
void PhotoEditorContent::applyModifications(
PhotoModifications modifications) {
_modifications = std::move(modifications);
update();
}
void PhotoEditorContent::save(PhotoModifications &modifications) {
modifications.crop = _crop->saveCropRect();
_paint->keepResult();
const auto savedScene = _paint->saveScene();
if (!modifications.paint) {
modifications.paint = savedScene;
}
}
void PhotoEditorContent::applyMode(const PhotoEditorMode &mode) {
if (mode.mode == PhotoEditorMode::Mode::Out) {
if (mode.action == PhotoEditorMode::Action::Discard) {
_paint->restoreScene();
}
return;
}
const auto isTransform = (mode.mode == PhotoEditorMode::Mode::Transform);
_crop->setVisible(isTransform);
_paint->setAttribute(Qt::WA_TransparentForMouseEvents, isTransform);
if (!isTransform) {
_paint->updateUndoState();
}
if (mode.action == PhotoEditorMode::Action::Discard) {
_paint->cancel();
} else if (mode.action == PhotoEditorMode::Action::Save) {
_paint->keepResult();
}
_mode = mode;
}
void PhotoEditorContent::applyBrush(const Brush &brush) {
_paint->applyBrush(brush);
}
bool PhotoEditorContent::handleKeyPress(not_null<QKeyEvent*> e) const {
return false;
}
void PhotoEditorContent::setupDragArea() {
auto dragEnterFilter = [=](const QMimeData *data) {
return (_mode.mode == PhotoEditorMode::Mode::Paint)
? Storage::ValidatePhotoEditorMediaDragData(data)
: false;
};
const auto areas = DragArea::SetupDragAreaToContainer(
this,
std::move(dragEnterFilter),
nullptr,
nullptr,
[](const QMimeData *d) { return Storage::MimeDataState::Image; },
true);
areas.photo->setDroppedCallback([=](const QMimeData *data) {
_paint->handleMimeData(data);
});
}
} // namespace Editor
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