summaryrefslogtreecommitdiff
path: root/graphics/asymptote/GUI/labelEditor.py
blob: 7da1c5f903759cc6b498741c9a4a598ec945c864 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
#!/usr/bin/env python3

from pyUIClass.labelTextEditor import Ui_Dialog
import PyQt5.QtWidgets as QtWidgets
import PyQt5.QtSvg as QtSvg
import PyQt5.QtGui as QtGui
import PyQt5.QtCore as QtCore
import xasyArgs as xasyArgs
import xasy2asy as xasy2asy
import xasyOptions as xasyOptions
import xasyUtils as xasyUtils
import subprocess
import tempfile
import uuid
import os
import io


class labelEditor(QtWidgets.QDialog):
    def __init__(self, text=''):
        super().__init__()
        self.ui = Ui_Dialog()
        self.ui.setupUi(self)

        self.ui.btnAccept.clicked.connect(self.accept)
        self.ui.btnCancel.clicked.connect(self.reject)
        self.ui.chkMathMode.stateChanged.connect(self.chkMathModeChecked)
        self.ui.btnPreview.clicked.connect(self.btnPreviewOnClick)
        self.ui.btnGetText.clicked.connect(self.btnGetTextOnClick)

        self.svgPreview = None
        self.initializeText(text)

    def initializeText(self, text: str):
        if text[0] == '$' and text[-1] == '$':
            self.ui.chkMathMode.setChecked(True)
            text = text.strip('$')

            if text.startswith('\\displaystyle{'):
                self.ui.cmbMathStyle.setCurrentText('Display Style')
                text = text.rstrip('}')
                text = text.replace('\\displaystyle{', '', 1)
            elif text.startswith('\\scriptstyle{'):
                self.ui.cmbMathStyle.setCurrentText('Script Style')
                text = text.rstrip('}')
                text = text.replace('\\scriptstyle{', '', 1)

        self.ui.txtLabelEdit.setPlainText(text)

    def chkMathModeChecked(self, checked):
        self.ui.cmbMathStyle.setEnabled(checked)

    def getText(self):
        rawText = self.ui.txtLabelEdit.toPlainText()
        rawText.replace('\n', ' ')
        if self.ui.chkMathMode.isChecked():
            prefix = ''
            suffix = ''
            if self.ui.cmbMathStyle.currentText() == 'Display Style':
                prefix = '\\displaystyle{'
                suffix = '}'
            elif self.ui.cmbMathStyle.currentText() == 'Script Style':
                prefix = '\\scriptstyle{'
                suffix = '}'
            return '${0}{1}{2}$'.format(prefix, rawText, suffix)
        else:
            return rawText

    def btnPreviewOnClick(self):
        path = xasyArgs.getArgs().asypath
        if path is None:
            opt = xo.BasicConfigs.defaultOpt
            path = opt['asyPath']

        asyInput = """
        frame f;
        label(f, "{0}");
        write(min(f), newl);
        write(max(f), newl);
        shipout(f);
        """

        self.svgPreview = QtSvg.QSvgRenderer()
        with tempfile.TemporaryDirectory(prefix='xasylbl_') as tmpdir:
            id = str(uuid.uuid4())
            tmpFile = os.path.join(tmpdir, 'lbl-{0}.svg'.format(id))

            with subprocess.Popen(args=[path, '-fsvg', '-o', tmpFile, '-'], encoding='utf-8', stdin=subprocess.PIPE,
                                   stdout=subprocess.PIPE) as asy:
                asy.stdin.write(asyInput.format(self.getText()))
                asy.stdin.close()
                out = asy.stdout.read()

            raw_array = out.splitlines()

            bounds_1, bounds_2 = [val.strip() for val in raw_array]

            min_bounds = xasyUtils.listize(bounds_1, (float, float))
            max_bounds = xasyUtils.listize(bounds_2, (float, float))

            new_rect = self.processBounds(min_bounds, max_bounds)
            self.svgPreview.load(tmpFile)



        self.drawPreview(new_rect)

    def drawPreview(self, naturalBounds):
        img = QtGui.QPixmap(self.ui.lblLabelPreview.size())
        img.fill(QtGui.QColor.fromRgbF(1, 1, 1, 1))
        if self.svgPreview is None:
            pass
        else:
            with QtGui.QPainter(img) as pnt:
                scale_ratio = self.getIdealScaleRatio(naturalBounds, self.ui.lblLabelPreview.rect())

                pnt.translate(self.ui.lblLabelPreview.rect().center())
                pnt.scale(scale_ratio, scale_ratio)
                self.svgPreview.render(pnt, naturalBounds)
            self.ui.lblLabelPreview.setPixmap(img)


    def getIdealScaleRatio(self, rect, boundsRect):
        assert isinstance(rect, (QtCore.QRect, QtCore.QRectF))
        assert isinstance(rect, (QtCore.QRect, QtCore.QRectF))

        magic_ratio = 0.50
        idealRatioHeight = (magic_ratio * boundsRect.height()) / rect.height()
        magicRatioWidth = 0.50

        if idealRatioHeight * rect.width() > magicRatioWidth * boundsRect.width():
            idealRatioWidth = (magicRatioWidth * boundsRect.width()) / rect.width()
            idealRatio = min(idealRatioHeight, idealRatioWidth)
        else:
            idealRatio = idealRatioHeight
        return idealRatio

    def processBounds(self, minPt, maxPt):
        p1x, p1y = minPt
        p2x, p2y = maxPt

        minPt = QtCore.QPointF(p1x, p1y)
        maxPt = QtCore.QPointF(p2x, p2y)

        newRect = QtCore.QRectF(minPt, maxPt)
        return newRect


    def btnGetTextOnClick(self):
        msgbox = QtWidgets.QMessageBox()
        msgbox.setText('Text Preview:\n' + self.getText())
        msgbox.setWindowTitle('Text preview')
        msgbox.show()
        return msgbox.exec_()