140 lines
3.7 KiB
C++
140 lines
3.7 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2017 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the test suite of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:GPL-EXCEPT$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 as published by the Free Software
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** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef TRIVISWIDGET_H
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#define TRIVISWIDGET_H
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#include <QWidget>
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#include <QComboBox>
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#include <QRadioButton>
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#include <QLabel>
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#include <QSpinBox>
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#include <QCheckBox>
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#include <QScrollArea>
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class TriVisCanvas : public QWidget
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{
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Q_OBJECT
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public:
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TriVisCanvas(QWidget *parent = nullptr);
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QStringList shapes() const;
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enum Type {
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Stroke,
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Fill
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};
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void setType(Type t) { m_type = t; }
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void setIndex(int idx) { m_idx = idx; }
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void setStrokeWidth(float w) { m_strokeWidth = w; }
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void setDashStroke(bool d) { m_dashStroke = d; }
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void setStepLimits(int strokeLimit, int fillLimit) {
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m_strokeStepLimit = strokeLimit;
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m_fillStepLimit = fillLimit;
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update();
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}
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enum GeomType {
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Triangles,
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TriangleStrips
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};
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QImage preview() const;
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GeomType geomType() const { return m_type == Stroke ? TriangleStrips : Triangles; }
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int vertexCount() const { return m_type == Stroke ? m_strokeVertices.count() : m_fillVertices.count(); }
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int indexCount() const { return m_type == Stroke ? 0 : m_fillIndices.count(); }
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float zoomLevel() const { return m_zoom; }
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void retriangulate();
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void regeneratePreviews();
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protected:
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void paintEvent(QPaintEvent *event) override;
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void wheelEvent(QWheelEvent *event) override;
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signals:
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void retriangulated();
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void zoomChanged(float oldZoom, float newZoom);
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private:
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void addPreview(int idx);
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Type m_type = Stroke;
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int m_idx = 0;
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float m_strokeWidth = 1;
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bool m_dashStroke = false;
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QVector<QPainterPath> m_paths;
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QVector<QImage> m_strokePreviews;
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QVector<QImage> m_fillPreviews;
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struct Vertex {
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float x, y;
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void set(float vx, float vy) { x = vx; y = vy; }
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};
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QVector<Vertex> m_fillVertices;
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QVector<quint32> m_fillIndices;
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QVector<Vertex> m_strokeVertices;
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float m_zoom = 1;
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int m_fillStepLimit = 0;
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int m_strokeStepLimit = 0;
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};
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class TriangulationVisualizer : public QWidget
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{
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Q_OBJECT
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public:
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TriangulationVisualizer(QWidget *parent = nullptr);
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private:
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void updateInfoLabel();
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void updatePreviewLabel();
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QComboBox *m_cbShape;
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QLabel *m_lbPreview;
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QRadioButton *m_rdStroke;
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QRadioButton *m_rdFill;
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QScrollArea *m_scrollArea;
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TriVisCanvas *m_canvas;
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QLabel *m_lbInfo;
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QSpinBox *m_spStrokeWidth;
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QCheckBox *m_chDash;
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QCheckBox *m_chStepEnable;
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QSpinBox *m_spStepStroke;
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QSpinBox *m_spStepFill;
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};
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#endif
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