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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/*
* Copyright (c) 2014-2016 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
#include <Swift/QtUI/Trellis/QtGridSelectionDialog.h>
#include <QApplication>
#include <QCursor>
#include <QPaintEvent>
#include <QPainter>
#include <QStyle>
#include <QStyleOption>
namespace Swift {
QtGridSelectionDialog::QtGridSelectionDialog(QWidget* parent) : QWidget(parent), descriptionText(tr("Select the number of rows and columns for your layout. You can change the size by moving the mouse or cursor keys.")) {
frameSize = QSize(28,28) * 2;
maxGridSize = QSize(7,7);
minGridSize = QSize(1,1);
currentGridSize = QSize(1,1);
padding = 4;
setWindowFlags(Qt::FramelessWindowHint);
setCursor(Qt::SizeAllCursor);
horizontalMargin = style()->pixelMetric(QStyle::PM_LayoutLeftMargin);
verticalMargin = style()->pixelMetric(QStyle::PM_LayoutBottomMargin);
}
QSize QtGridSelectionDialog::sizeHint() const {
// PM_MenuVMargin | frameSize | ( padding | frameSize ) * | PM_MenuVMargin
int width = horizontalMargin + frameSize.width() + (padding + frameSize.width()) * (currentGridSize.width() - 1) + horizontalMargin;
int height = verticalMargin + frameSize.height() + (padding + frameSize.height()) * (currentGridSize.height() - 1) + verticalMargin;
// Add space for descriptive centered text below.
auto fontMetrics = QFontMetrics(QApplication::font());
auto descriptionBB = fontMetrics.boundingRect(QRect(0,0,width - 2*horizontalMargin,1000), Qt::TextWordWrap, descriptionText, 0, 0);
height += descriptionBB.height() + descriptionBB.y();
return QSize(width, height);
}
void QtGridSelectionDialog::setCurrentGridSize(const QSize& size) {
currentGridSize = size;
emit currentGridSizeChanged(size);
}
QSize QtGridSelectionDialog::getCurrentGridSize() const {
return currentGridSize;
}
void QtGridSelectionDialog::setMinGridSize(const QSize& size) {
minGridSize = size;
emit minGridSizeChanged(size);
}
QSize QtGridSelectionDialog::getMinGridSize() const {
return minGridSize;
}
void QtGridSelectionDialog::setMaxGridSize(const QSize& size) {
maxGridSize = size;
emit maxGridSizeChanged(size);
}
QSize QtGridSelectionDialog::getMaxGridSize() const {
return maxGridSize;
}
QSize QtGridSelectionDialog::getFrameSize() const {
return frameSize;
}
void QtGridSelectionDialog::keyReleaseEvent(QKeyEvent* event) {
if (event) {
QSize newGridSize = currentGridSize;
if (event->key() == Qt::Key_Up) {
newGridSize += QSize(0, -1);
}
else if (event->key() == Qt::Key_Down) {
newGridSize += QSize(0, 1);
}
else if (event->key() == Qt::Key_Left) {
newGridSize += QSize(-1, 0);
}
else if (event->key() == Qt::Key_Right) {
newGridSize += QSize(1, 0);
}
else if (event->key() == Qt::Key_Return) {
hide();
setCurrentGridSize(currentGridSize);
}
else if (event->key() == Qt::Key_Escape) {
hide();
}
if (minGridSize.expandedTo(newGridSize).boundedTo(maxGridSize) != currentGridSize) {
currentGridSize = minGridSize.expandedTo(newGridSize).boundedTo(maxGridSize);
QSize newSizeHint = sizeHint();
resize(newSizeHint);
QCursor::setPos(mapToGlobal(QPoint(newSizeHint.width(), newSizeHint.height()) - QPoint(frameSize.width() / 2, frameSize.height() / 2)));
}
}
}
void QtGridSelectionDialog::mousePressEvent(QMouseEvent*) {
hide();
setCurrentGridSize(currentGridSize);
}
void QtGridSelectionDialog::paintEvent(QPaintEvent*) {
QPainter painter(this);
// draw grid
QRect gridCell = QRect(QPoint(0,0), frameSize);
painter.setBrush(palette().highlight());
painter.setPen(Qt::NoPen);
for (int x = 0; x < currentGridSize.width(); x++) {
for (int y = 0; y < currentGridSize.height(); y++) {
int xPos = horizontalMargin + (x * (frameSize.width() + padding));
int yPos = verticalMargin + (y * (frameSize.height() + padding));
gridCell.moveTo(QPoint(xPos, yPos));
painter.drawRect(gridCell);
}
}
// draw description text
auto fontMetrics = QFontMetrics(QApplication::font());
auto descriptionBB = fontMetrics.boundingRect(QRect(0,0, width() - 2 * horizontalMargin,0), Qt::AlignHCenter | Qt::AlignTop | Qt::TextWordWrap, descriptionText, 0, 0);
QStyleOption opt;
opt.initFrom(this);
int textY = verticalMargin + (currentGridSize.height() * (frameSize.height() + padding));
int textX = (size().width() - descriptionBB.width()) / 2;
style()->drawItemText(&painter, QRect(textX, textY, descriptionBB.width(), descriptionBB.height()), Qt::AlignHCenter | Qt::AlignTop | Qt::TextWordWrap, opt.palette, true, descriptionText, foregroundRole());
}
void QtGridSelectionDialog::showEvent(QShowEvent*) {
setMouseTracking(true);
}
void QtGridSelectionDialog::hideEvent(QHideEvent*) {
setMouseTracking(false);
}
void QtGridSelectionDialog::mouseMoveEvent(QMouseEvent*) {
QPoint diff = (frameGeometry().bottomRight() - QCursor::pos());
QSize newDimensions = currentGridSize;
if (diff.x() > frameSize.width() * 1.5) {
newDimensions -= QSize(diff.x() / (frameSize.width() * 1.5), 0);
}
if (diff.y() > frameSize.height() * 1.5) {
newDimensions -= QSize(0, diff.y() / (frameSize.height() * 1.5));
}
if (minGridSize.expandedTo(newDimensions).boundedTo(maxGridSize) != currentGridSize) {
currentGridSize = minGridSize.expandedTo(newDimensions).boundedTo(maxGridSize);
resize(sizeHint());
}
}
void QtGridSelectionDialog::leaveEvent(QEvent *) {
QPoint diff = (frameGeometry().bottomRight() - QCursor::pos());
QSize newGridSize = currentGridSize;
if (diff.x() < 0) {
newGridSize += QSize(1,0);
}
if (diff.y() < 0) {
newGridSize += QSize(0,1);
}
if (minGridSize.expandedTo(newGridSize).boundedTo(maxGridSize) != currentGridSize) {
currentGridSize = minGridSize.expandedTo(newGridSize).boundedTo(maxGridSize);
resize(sizeHint());
}
}
bool QtGridSelectionDialog::event(QEvent* event) {
// Hide the window when it becomes a non-top-level window.
if (event->type() == QEvent::WindowDeactivate) {
hide();
return true;
}
return QWidget::event(event);
}
}
|
Swift