KWidgetsAddons

kpixmapregionselectordialog.cpp
1/*
2 This file is part of the KDE libraries
3 SPDX-FileCopyrightText: 2004 Antonio Larrosa <larrosa@kde.org>
4
5 SPDX-License-Identifier: LGPL-2.0-or-later
6*/
7
8#include "kpixmapregionselectordialog.h"
9
10#include <QDialogButtonBox>
11#include <QGuiApplication>
12#include <QImage>
13#include <QLabel>
14#include <QScreen>
15#include <QVBoxLayout>
16
17#include <kpixmapregionselectorwidget.h>
18
19class KPixmapRegionSelectorDialogPrivate
20{
21public:
22 KPixmapRegionSelectorDialogPrivate(KPixmapRegionSelectorDialog *parent)
23 : q(parent)
24 {
25 }
26
27 KPixmapRegionSelectorWidget *pixmapSelectorWidget = nullptr;
29
30 void init()
31 {
32 //When the image is rotated we need to enforce the maximum width&height into the
33 //KPixmapRegionSelectorWidget; in order to avoid the dialog to get out of the screen
34 q->connect(pixmapSelectorWidget, &KPixmapRegionSelectorWidget::pixmapRotated, q, [this]() {
35 adjustPixmapSize();
36 });
37 }
38
39 void adjustPixmapSize()
40 {
41 if (pixmapSelectorWidget) {
42 // Set maximum size for picture
43 QScreen *screen = pixmapSelectorWidget->screen();
44 if (screen) {
45 const QRect screenGeometry = screen->availableGeometry();
46 pixmapSelectorWidget->setMaximumWidgetSize((int)(screenGeometry.width() * 4.0 / 5), (int)(screenGeometry.height() * 4.0 / 5));
47 }
48 }
49 }
50};
51
53 : QDialog(parent)
54 , d(new KPixmapRegionSelectorDialogPrivate(this))
55{
56 setWindowTitle(tr("Select Region of Image", "@title:window"));
57
58 QVBoxLayout *boxLayout = new QVBoxLayout(this);
59
60 QLabel *label = new QLabel(tr("Please click and drag on the image to select the region of interest:", "@label:chooser"), this);
61 d->pixmapSelectorWidget = new KPixmapRegionSelectorWidget(this);
62
63 QDialogButtonBox *buttonBox = new QDialogButtonBox(this);
67
68 boxLayout->addWidget(label);
69 boxLayout->addWidget(d->pixmapSelectorWidget);
70 boxLayout->addWidget(buttonBox);
71
72 d->init();
73}
74
76
81
86
88{
90
91 dialog.pixmapRegionSelectorWidget()->setPixmap(pixmap);
93
94 int result = dialog.exec();
95
96 QRect rect;
97
100 }
101
102 return rect;
103}
104
105QRect KPixmapRegionSelectorDialog::getSelectedRegion(const QPixmap &pixmap, int aspectRatioWidth, int aspectRatioHeight, QWidget *parent)
106{
108
109 dialog.pixmapRegionSelectorWidget()->setPixmap(pixmap);
110 dialog.pixmapRegionSelectorWidget()->setSelectionAspectRatio(aspectRatioWidth, aspectRatioHeight);
112
113 int result = dialog.exec();
114
115 QRect rect;
116
117 if (result == QDialog::Accepted) {
119 }
120
121 return rect;
122}
123
125{
127
128 dialog.pixmapRegionSelectorWidget()->setPixmap(pixmap);
130
131 int result = dialog.exec();
132
133 QImage image;
134
135 if (result == QDialog::Accepted) {
136 image = dialog.pixmapRegionSelectorWidget()->selectedImage();
137 }
138
139 return image;
140}
141
142QImage KPixmapRegionSelectorDialog::getSelectedImage(const QPixmap &pixmap, int aspectRatioWidth, int aspectRatioHeight, QWidget *parent)
143{
145
146 dialog.pixmapRegionSelectorWidget()->setPixmap(pixmap);
147 dialog.pixmapRegionSelectorWidget()->setSelectionAspectRatio(aspectRatioWidth, aspectRatioHeight);
149
150 int result = dialog.exec();
151
152 QImage image;
153
154 if (result == QDialog::Accepted) {
155 image = dialog.pixmapRegionSelectorWidget()->selectedImage();
156 }
157
158 return image;
159}
160
161#include "moc_kpixmapregionselectordialog.cpp"
A dialog that uses a KPixmapRegionSelectorWidget to allow the user to select a region of an image.
KPixmapRegionSelectorDialog(QWidget *parent=nullptr)
The constructor of an empty KPixmapRegionSelectorDialog, you have to call later the setPixmap method ...
static QImage getSelectedImage(const QPixmap &pixmap, QWidget *parent=nullptr)
Creates a modal dialog, lets the user to select a region of the pixmap and returns when the dialog is...
~KPixmapRegionSelectorDialog() override
The destructor of the dialog.
static QRect getSelectedRegion(const QPixmap &pixmap, QWidget *parent=nullptr)
Creates a modal dialog, lets the user to select a region of the pixmap and returns when the dialog is...
KPixmapRegionSelectorWidget * pixmapRegionSelectorWidget() const
KPixmapRegionSelectorWidget is a widget that shows a picture and provides the user with a friendly wa...
QRect unzoomedSelectedRegion() const
Returns the selected region ( in unzoomed, original pixmap coordinates )
void setPixmap(const QPixmap &pixmap)
Sets the pixmap which will be shown for the user to select a region from.
void setSelectionAspectRatio(int width, int height)
Sets the aspect ration that the selected subimage should have.
void setMaximumWidgetSize(int width, int height)
Sets the maximum size for the widget.
void addWidget(QWidget *widget, int stretch, Qt::Alignment alignment)
virtual void accept()
virtual int exec()
virtual void reject()
int result() const const
void setStandardButtons(StandardButtons buttons)
QMetaObject::Connection connect(const QObject *sender, PointerToMemberFunction signal, Functor functor)
QObject * parent() const const
QString tr(const char *sourceText, const char *disambiguation, int n)
int height() const const
int width() const const
QScreen * screen() const const
void setWindowTitle(const QString &)
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