143 lines
4.0 KiB
C++
143 lines
4.0 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2022 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "textv3.h"
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#include <QAbstractTextDocumentLayout>
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#include <QDateTime>
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#include <QTextDocument>
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#include "common/html.h"
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#include "node/project/project.h"
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namespace olive {
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#define super ShapeNodeBase
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enum TextVerticalAlign {
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kVerticalAlignTop,
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kVerticalAlignCenter,
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kVerticalAlignBottom,
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};
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const QString TextGeneratorV3::kTextInput = QStringLiteral("text_in");
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TextGeneratorV3::TextGeneratorV3() :
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ShapeNodeBase(false)
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{
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AddInput(kTextInput, NodeValue::kText, QStringLiteral("<p style='font-size: 72pt; color: white;'>%1</p>").arg(tr("Sample Text")));
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SetInputProperty(kTextInput, QStringLiteral("vieweronly"), true);
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SetStandardValue(kSizeInput, QVector2D(400, 300));
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text_gizmo_ = new TextGizmo(this);
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text_gizmo_->SetInput(NodeInput(this, kTextInput));
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}
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QString TextGeneratorV3::Name() const
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{
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return tr("Text");
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}
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QString TextGeneratorV3::id() const
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{
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return QStringLiteral("org.olivevideoeditor.Olive.text3");
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}
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QVector<Node::CategoryID> TextGeneratorV3::Category() const
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{
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return {kCategoryGenerator};
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}
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QString TextGeneratorV3::Description() const
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{
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return tr("Generate rich text.");
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}
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void TextGeneratorV3::Retranslate()
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{
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super::Retranslate();
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SetInputName(kTextInput, tr("Text"));
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}
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void TextGeneratorV3::Value(const NodeValueRow &value, const NodeGlobals &globals, NodeValueTable *table) const
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{
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GenerateJob job;
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job.Insert(value);
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job.SetAlphaChannelRequired(GenerateJob::kAlphaForceOn);
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job.SetRequestedFormat(VideoParams::kFormatUnsigned8);
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// FIXME: Provide user override for this
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job.SetColorspace(project()->color_manager()->GetDefaultInputColorSpace());
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if (!job.Get(kTextInput).toString().isEmpty()) {
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PushMergableJob(value, QVariant::fromValue(job), table);
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} else if (value[kBaseInput].toTexture()) {
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table->Push(value[kBaseInput]);
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}
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}
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void TextGeneratorV3::GenerateFrame(FramePtr frame, const GenerateJob& job) const
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{
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QImage img(reinterpret_cast<uchar*>(frame->data()), frame->width(), frame->height(), frame->linesize_bytes(), QImage::Format_RGBA8888_Premultiplied);
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img.fill(Qt::transparent);
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// 96 DPI in DPM (96 / 2.54 * 100)
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const int dpm = 3780;
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img.setDotsPerMeterX(dpm);
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img.setDotsPerMeterY(dpm);
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QTextDocument text_doc;
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text_doc.documentLayout()->setPaintDevice(&img);
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QString html = job.Get(kTextInput).toString();
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Html::HtmlToDoc(&text_doc, html);
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QVector2D size = job.Get(kSizeInput).toVec2();
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text_doc.setTextWidth(size.x());
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// Draw rich text onto image
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QPainter p(&img);
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p.scale(1.0 / frame->video_params().divider(), 1.0 / frame->video_params().divider());
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QVector2D pos = job.Get(kPositionInput).toVec2();
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p.translate(pos.x() - size.x()/2, pos.y() - size.y()/2);
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p.translate(frame->video_params().width()/2, frame->video_params().height()/2);
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p.setClipRect(0, 0, size.x(), size.y());
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// Ensure default text color is white
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QAbstractTextDocumentLayout::PaintContext ctx;
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ctx.palette.setColor(QPalette::Text, Qt::white);
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text_doc.documentLayout()->draw(&p, ctx);
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}
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void TextGeneratorV3::UpdateGizmoPositions(const NodeValueRow &row, const NodeGlobals &globals)
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{
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super::UpdateGizmoPositions(row, globals);
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QRectF rect = poly_gizmo()->GetPolygon().boundingRect();
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text_gizmo_->SetRect(rect);
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text_gizmo_->SetHtml(row[kTextInput].toString());
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}
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}
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