118 lines
3 KiB
C++
118 lines
3 KiB
C++
/*
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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 "editor/scene.h"
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#include "editor/scene_item_canvas.h"
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#include "editor/scene_item_line.h"
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#include "editor/scene_item_sticker.h"
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#include "ui/rp_widget.h"
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#include <QGraphicsSceneMouseEvent>
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namespace Editor {
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namespace {
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bool SkipMouseEvent(not_null<QGraphicsSceneMouseEvent*> event) {
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return event->isAccepted() || (event->button() == Qt::RightButton);
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}
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} // namespace
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Scene::Scene(const QRectF &rect)
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: QGraphicsScene(rect)
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, _canvas(new ItemCanvas) {
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QGraphicsScene::addItem(_canvas);
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_canvas->clearPixmap();
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_canvas->grabContentRequests(
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) | rpl::start_with_next([=](ItemCanvas::Content &&content) {
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const auto item = new ItemLine(std::move(content.pixmap));
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item->setPos(content.position);
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addItem(item);
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_canvas->setZValue(++_lastLineZ);
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}, _lifetime);
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}
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void Scene::addItem(not_null<NumberedItem*> item) {
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item->setNumber(_itemNumber++);
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QGraphicsScene::addItem(item);
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_addsItem.fire({});
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}
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void Scene::mousePressEvent(QGraphicsSceneMouseEvent *event) {
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QGraphicsScene::mousePressEvent(event);
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if (SkipMouseEvent(event)) {
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return;
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}
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_canvas->handleMousePressEvent(event);
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_mousePresses.fire({});
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}
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void Scene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
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QGraphicsScene::mouseReleaseEvent(event);
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if (SkipMouseEvent(event)) {
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return;
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}
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_canvas->handleMouseReleaseEvent(event);
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}
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void Scene::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
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QGraphicsScene::mouseMoveEvent(event);
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if (SkipMouseEvent(event)) {
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return;
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}
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_canvas->handleMouseMoveEvent(event);
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}
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void Scene::applyBrush(const QColor &color, float size) {
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_canvas->applyBrush(color, size);
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}
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rpl::producer<> Scene::mousePresses() const {
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return _mousePresses.events();
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}
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rpl::producer<> Scene::addsItem() const {
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return _addsItem.events();
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}
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std::vector<QGraphicsItem*> Scene::items(Qt::SortOrder order) const {
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using Item = QGraphicsItem;
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auto rawItems = QGraphicsScene::items();
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auto filteredItems = ranges::views::all(
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rawItems
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) | ranges::views::filter([](Item *i) {
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return i->type() != ItemCanvas::Type;
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}) | ranges::to_vector;
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ranges::sort(filteredItems, [&](not_null<Item*> a, not_null<Item*> b) {
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const auto numA = qgraphicsitem_cast<NumberedItem*>(a)->number();
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const auto numB = qgraphicsitem_cast<NumberedItem*>(b)->number();
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return (order == Qt::AscendingOrder) ? (numA < numB) : (numA > numB);
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});
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return filteredItems;
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}
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std::vector<MTPInputDocument> Scene::attachedStickers() const {
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const auto allItems = items();
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return ranges::views::all(
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allItems
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) | ranges::views::filter([](QGraphicsItem *i) {
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return i->isVisible() && (i->type() == ItemSticker::Type);
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}) | ranges::views::transform([](QGraphicsItem *i) {
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return qgraphicsitem_cast<ItemSticker*>(i)->sticker();
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}) | ranges::to_vector;
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}
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Scene::~Scene() {
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}
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} // namespace Editor
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