1 /*
2  *  Copyright (c) 2020 Sharaf Zaman <sharafzaz121@gmail.com>
3  *
4  *  This program is free software; you can redistribute it and/or modify
5  *  it under the terms of the GNU General Public License as published by
6  *  the Free Software Foundation; either version 2 of the License, or
7  *  (at your option) any later version.
8  *
9  *  This program is distributed in the hope that it will be useful,
10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  *  GNU General Public License for more details.
13  *
14  *  You should have received a copy of the GNU General Public License
15  *  along with this program; if not, write to the Free Software
16  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17  */
18 #ifndef SVGMESHARRAY_H
19 #define SVGMESHARRAY_H
20 
21 #include <QVector>
22 
23 #include "SvgMeshPatch.h"
24 
25 struct SvgMeshPosition {
26     int row;
27     int col;
28     SvgMeshPatch::Type segmentType;
29 
SvgMeshPositionSvgMeshPosition30     SvgMeshPosition()
31         : row(-1)
32         , col(-1)
33         , segmentType(SvgMeshPatch::Size)
34     {
35     }
36 
SvgMeshPositionSvgMeshPosition37     SvgMeshPosition(int row, int col, SvgMeshPatch::Type type)
38         : row(row)
39         , col(col)
40         , segmentType(type)
41     {
42     }
43 
isValidSvgMeshPosition44     bool isValid() const {
45         return row >= 0 && col >= 0;
46     }
47 };
48 
49 class KRITAFLAKE_EXPORT SvgMeshArray
50 {
51 public:
52     SvgMeshArray();
53 
54     SvgMeshArray(const SvgMeshArray& other);
55 
56     ~SvgMeshArray();
57 
58     /// creates a default mesh in OBB coordinates (because it's easier and more logical in this case)
59     void createDefaultMesh(const int nrows, const int ncols, const QColor color, const QSizeF size);
60 
61     void newRow();
62 
63     bool addPatch(QList<QPair<QString, QColor>> stops, const QPointF initialPoint);
64 
65     /// Get the point of a node in mesharray
66     SvgMeshStop getStop(const SvgMeshPatch::Type edge, const int row, const int col) const;
67 
68     SvgMeshStop getStop(const SvgMeshPosition &pos) const;
69 
70     /// Get the Path Points for a segment of the meshpatch
71     std::array<QPointF, 4> getPath(const SvgMeshPatch::Type edge, const int row, const int col) const;
72 
73     // overload
74     SvgMeshPath getPath(const SvgMeshPosition &pos) const;
75 
76     SvgMeshPatch* getPatch(const int row, const int col) const;
77 
78     int numRows() const;
79     int numColumns() const;
80 
81     void setTransform(const QTransform& matrix);
82 
83     QRectF boundingRect() const;
84 
85     /// Return the paths connected to the corner. Can be thought of as edges connected to a vertex
86     QVector<SvgMeshPosition> getConnectedPaths(const SvgMeshPosition &position) const;
87 
88     void modifyHandle(const SvgMeshPosition &position, const std::array<QPointF, 4> &newPath);
89     void modifyCorner(const SvgMeshPosition &position, const QPointF &newPos);
90 
91     void modifyColor(const SvgMeshPosition &position, const QColor &color);
92 
93 private:
94     /// return the shared path between two patches.
95     /// NOTE: Not to be confused with getConnectedPaths
96     QVector<SvgMeshPosition> getSharedPaths(const SvgMeshPosition &position) const;
97 
98     //  get color of a stop
99     QColor getColor(SvgMeshPatch::Type edge, int row, int col) const;
100 
101 private:
102     /// where each vector is a meshrow
103     QVector<QVector<SvgMeshPatch*>> m_array;
104 };
105 
106 #endif // SVGMESHARRAY_H
107