| 1 | /* |
|---|---|
| 2 | * This file is part of KQuickCharts |
| 3 | * SPDX-FileCopyrightText: 2019 Arjen Hiemstra <ahiemstra@heimr.nl> |
| 4 | * |
| 5 | * SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL |
| 6 | */ |
| 7 | |
| 8 | #include "LineChartMaterial.h" |
| 9 | |
| 10 | LineChartMaterial::LineChartMaterial() |
| 11 | { |
| 12 | setFlag(flags: QSGMaterial::Blending); |
| 13 | } |
| 14 | |
| 15 | LineChartMaterial::~LineChartMaterial() |
| 16 | { |
| 17 | } |
| 18 | |
| 19 | QSGMaterialType *LineChartMaterial::type() const |
| 20 | { |
| 21 | static QSGMaterialType type; |
| 22 | return &type; |
| 23 | } |
| 24 | |
| 25 | QSGMaterialShader *LineChartMaterial::createShader(QSGRendererInterface::RenderMode) const |
| 26 | { |
| 27 | return new LineChartShader(); |
| 28 | } |
| 29 | |
| 30 | int LineChartMaterial::compare(const QSGMaterial *other) const |
| 31 | { |
| 32 | auto material = static_cast<const LineChartMaterial *>(other); |
| 33 | |
| 34 | /* clang-format off */ |
| 35 | if (qFuzzyCompare(p1: material->aspect, p2: aspect) |
| 36 | && qFuzzyCompare(p1: material->lineWidth, p2: lineWidth) |
| 37 | && qFuzzyCompare(p1: material->smoothing, p2: smoothing)) { /* clang-format on */ |
| 38 | return 0; |
| 39 | } |
| 40 | |
| 41 | return QSGMaterial::compare(other); |
| 42 | } |
| 43 | |
| 44 | LineChartShader::LineChartShader() |
| 45 | { |
| 46 | setShaders(QStringLiteral("linechart.vert"), QStringLiteral( "linechart.frag")); |
| 47 | } |
| 48 | |
| 49 | LineChartShader::~LineChartShader() |
| 50 | { |
| 51 | } |
| 52 | |
| 53 | bool LineChartShader::updateUniformData(QSGMaterialShader::RenderState &state, QSGMaterial *newMaterial, QSGMaterial *oldMaterial) |
| 54 | { |
| 55 | bool changed = false; |
| 56 | UniformDataStream uniformData(state); |
| 57 | |
| 58 | if (state.isMatrixDirty()) { |
| 59 | uniformData << state.combinedMatrix(); |
| 60 | changed = true; |
| 61 | } else { |
| 62 | uniformData.skip<QMatrix4x4>(); |
| 63 | } |
| 64 | |
| 65 | if (state.isOpacityDirty()) { |
| 66 | uniformData << state.opacity(); |
| 67 | changed = true; |
| 68 | } else { |
| 69 | uniformData.skip<float>(); |
| 70 | } |
| 71 | |
| 72 | if (!oldMaterial || newMaterial->compare(other: oldMaterial) != 0) { |
| 73 | const auto material = static_cast<LineChartMaterial *>(newMaterial); |
| 74 | uniformData << material->lineWidth; |
| 75 | uniformData << material->aspect; |
| 76 | uniformData << material->smoothing; |
| 77 | changed = true; |
| 78 | } |
| 79 | |
| 80 | return changed; |
| 81 | } |
| 82 |