|
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 |
/*
Outlined QTextEdit
Copyright (C) 2014 by 3735943886
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QApplication>
#include <QAbstractTextDocumentLayout>
#include <QDialog>
#include <QLayout>
#include <QPainter>
#include <QScrollBar>
#include <QTextEdit>
QT_BEGIN_NAMESPACE
extern Q_WIDGETS_EXPORT void qt_blurImage(QPainter *p, QImage &blurImage, qreal radius, bool quality, bool alphaOnly, int transposed = 0 );
QT_END_NAMESPACE
class MyTextEdit : public QTextEdit
{
void paintEvent(QPaintEvent* event)
{
// Local Variables
auto painterR = new QPainter;
auto painterV = new QPainter;
auto ctx = new QAbstractTextDocumentLayout::PaintContext;
// Set Default Text clr to Purewhite
ctx->palette.setColor(QPalette::Text, QColor(255, 255, 255, 255));
ctx->palette.setColor(QPalette::Base, QColor(0, 0, 0, 0));
// Setup Canvas
QImage i(viewport()->size(), QImage::Format_ARGB32);
i.fill(Qt::transparent);
painterV->begin(&i);
// Set Viewpoint Position
ctx->clip = QRectF(this->horizontalScrollBar()->value(), this->verticalScrollBar()->value(), viewport()->width(), viewport()->height());
painterV->translate(0 - this->horizontalScrollBar()->value(), 0 - this->verticalScrollBar()->value());
// Draw Outline to Canvas
document()->documentLayout()->draw(painterV, *ctx);
painterV->end();
// Mask for Outlining
i = i.createAlphaMask();
// Change Palette
QVector<QRgb> clr;
clr.push_back(qRgba(0, 0, 0, 0)); // Transparent background
clr.push_back(qRgba(0, 0, 0, 255)); // Outline color <- Edit here for custom color
i.setColorTable(clr);
// Bluring
painterR->begin(viewport());
qt_blurImage(painterR, i, 5, false, false);
painterR->end();
// Free Variables
delete painterV;
delete painterR;
delete ctx;
// Continue Event
QTextEdit::paintEvent(event);
}
};
class MainWindow : public QDialog
{
public:
MainWindow(QWidget *parent = 0) : QDialog(parent)
{
// Local variables
auto layout = new QVBoxLayout();
auto t = new MyTextEdit();
auto pal = new QPalette();
auto f = new QFont(tr("Ariel"), 24);
// Cyan text color with white background
pal->setColor(QPalette::Base, QColor(255, 255, 255, 255));
pal->setColor(QPalette::Text, QColor(0, 255, 255, 255));
t->setPalette(*pal);
// Set default font
f->setStyleStrategy(QFont::PreferAntialias);
t->setFont(*f);
// Layout alignment
layout->addWidget((QWidget *)t);
this->setLayout(layout);
}
};
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}
|
