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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
#include "timelineselectionrenderpass.h"
#include "timelineitemsrenderpass.h"
#include <QtMath>
#include <QSGSimpleRectNode>
namespace Timeline {
QSGGeometryNode *createSelectionNode(QSGMaterial *material)
{
QSGGeometryNode *selectionNode = new QSGGeometryNode;
selectionNode->setMaterial(material);
selectionNode->setFlag(QSGNode::OwnsMaterial, false);
QSGGeometry *geometry = new QSGGeometry(OpaqueColoredPoint2DWithSize::attributes(), 4);
Q_ASSERT(geometry->vertexData());
geometry->setDrawingMode(QSGGeometry::DrawTriangleStrip);
OpaqueColoredPoint2DWithSize *v = OpaqueColoredPoint2DWithSize::fromVertexData(geometry);
for (int i = 0; i < 4; ++i)
v[i].set(0, 0, 0, 0, 0, 0, 0, 0, 0);
selectionNode->setGeometry(geometry);
selectionNode->setFlag(QSGNode::OwnsGeometry, true);
selectionNode->setFlag(QSGNode::OwnedByParent, false);
return selectionNode;
}
class TimelineSelectionRenderPassState : public TimelineRenderPass::State {
public:
TimelineSelectionRenderPassState();
~TimelineSelectionRenderPassState();
QSGNode *expandedOverlay() const override { return m_expandedOverlay; }
QSGNode *collapsedOverlay() const override { return m_collapsedOverlay; }
TimelineItemsMaterial *material() { return &m_material; }
private:
QSGNode *m_expandedOverlay;
QSGNode *m_collapsedOverlay;
TimelineItemsMaterial m_material;
};
TimelineRenderPass::State *TimelineSelectionRenderPass::update(
const TimelineAbstractRenderer *renderer, const TimelineRenderState *parentState,
State *oldState, int firstIndex, int lastIndex, bool stateChanged, float spacing) const
{
Q_UNUSED(stateChanged)
const TimelineModel *model = renderer->model();
if (!model || model->isEmpty())
return oldState;
TimelineSelectionRenderPassState *state;
if (oldState == nullptr)
state = new TimelineSelectionRenderPassState;
else
state = static_cast<TimelineSelectionRenderPassState *>(oldState);
int selectedItem = renderer->selectedItem();
QSGGeometryNode *node = static_cast<QSGGeometryNode *>(model->expanded() ?
state->expandedOverlay() :
state->collapsedOverlay());
if (selectedItem != -1 && selectedItem >= firstIndex && selectedItem < lastIndex) {
qreal top = 0;
qreal height = 0;
if (model->expanded()) {
int row = model->expandedRow(selectedItem);
int rowHeight = model->expandedRowHeight(row);
height = rowHeight * model->relativeHeight(selectedItem);
top = (model->expandedRowOffset(row) + rowHeight) - height;
} else {
int row = model->collapsedRow(selectedItem);
height = TimelineModel::defaultRowHeight() * model->relativeHeight(selectedItem);
top = TimelineModel::defaultRowHeight() * (row + 1) - height;
}
qint64 startTime = qBound(parentState->start(), model->startTime(selectedItem),
parentState->end());
qint64 endTime = qBound(parentState->start(), model->endTime(selectedItem),
parentState->end());
qint64 left = startTime - parentState->start();
qint64 width = endTime - startTime;
// Construct from upper left and lower right for better precision. When constructing from
// left and width the error on the left border is inherited by the right border. Like this
// they're independent.
QRectF position(left * parentState->scale(), top, width * parentState->scale(), height);
QColor itemColor = model->color(selectedItem);
uchar red = itemColor.red();
uchar green = itemColor.green();
uchar blue = itemColor.blue();
int selectionId = model->selectionId(selectedItem);
OpaqueColoredPoint2DWithSize *v = OpaqueColoredPoint2DWithSize::fromVertexData(
node->geometry());
v[0].set(position.left(), position.bottom(), -position.width(), -position.height(),
selectionId, red, green, blue, 255);
v[1].set(position.right(), position.bottom(), position.width(), -position.height(),
selectionId, red, green, blue, 255);
v[2].set(position.left(), position.top(), -position.width(), position.height(),
selectionId, red, green, blue, 255);
v[3].set(position.right(), position.top(), position.width(), position.height(),
selectionId, red, green, blue, 255);
state->material()->setSelectionColor(renderer->selectionLocked() ? QColor(96,0,255) :
Qt::blue);
state->material()->setSelectedItem(selectionId);
state->material()->setScale(QVector2D(spacing / parentState->scale(), 1));
node->markDirty(QSGNode::DirtyMaterial | QSGNode::DirtyGeometry);
} else {
OpaqueColoredPoint2DWithSize *v = OpaqueColoredPoint2DWithSize::fromVertexData(
node->geometry());
for (int i = 0; i < 4; ++i)
v[i].set(0, 0, 0, 0, 0, 0, 0, 0, 0);
node->markDirty(QSGNode::DirtyGeometry);
}
return state;
}
const TimelineSelectionRenderPass *TimelineSelectionRenderPass::instance()
{
static const TimelineSelectionRenderPass pass;
return &pass;
}
TimelineSelectionRenderPass::TimelineSelectionRenderPass()
{
}
TimelineSelectionRenderPassState::TimelineSelectionRenderPassState() :
m_expandedOverlay(nullptr), m_collapsedOverlay(nullptr)
{
m_expandedOverlay = createSelectionNode(&m_material);
m_collapsedOverlay = createSelectionNode(&m_material);
}
TimelineSelectionRenderPassState::~TimelineSelectionRenderPassState()
{
delete m_collapsedOverlay;
delete m_expandedOverlay;
}
} // namespace Timeline
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