1 /*
2  * Cantata
3  *
4  * Copyright (c) 2011-2020 Craig Drummond <craig.p.drummond@gmail.com>
5  *
6  * ----
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; see the file COPYING.  If not, write to
20  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21  * Boston, MA 02110-1301, USA.
22  */
23 
24 #include "icon.h"
25 #include "utils.h"
26 #include <QMessageBox>
27 #include <QApplication>
28 #include <QToolButton>
29 
stdSize(int v)30 int Icon::stdSize(int v)
31 {
32     if (v<19) {
33         return 16;
34     } else if (v<=28) {
35         return 22;
36     } else if (v<=40) {
37         return 32;
38     } else if (v<=56) {
39         return 48;
40     } else if (v<=90) {
41         return 64;
42     }
43 
44     if (Utils::isHighDpi()) {
45         if (v<=160) {
46             return 128;
47         } else {
48             return 256;
49         }
50     }
51     return 128;
52 }
53 
dlgIconSize()54 int Icon::dlgIconSize()
55 {
56     static int size=-1;
57 
58     if (-1==size) {
59         QMessageBox *box=new QMessageBox(nullptr);
60         box->setVisible(false);
61         box->setIcon(QMessageBox::Information);
62         box->ensurePolished();
63         QPixmap pix=box->iconPixmap();
64         if (pix.isNull() || pix.width()<16) {
65             size=stdSize(QApplication::fontMetrics().height()*3.5);
66         } else {
67             size=pix.width();
68         }
69         box->deleteLater();
70     }
71     return size;
72 }
73 
init(QToolButton * btn,bool setFlat)74 void Icon::init(QToolButton *btn, bool setFlat)
75 {
76     static int size=-1;
77 
78     if (-1==size) {
79         size=QApplication::fontMetrics().height();
80         if (size>22) {
81             size=stdSize(size*1.1);
82         } else {
83             size=16;
84         }
85     }
86     btn->setIconSize(QSize(size, size));
87     if (setFlat) {
88         btn->setAutoRaise(true);
89     }
90 }
91 
getScaledPixmap(const QIcon & icon,int w,int h,int base)92 QPixmap Icon::getScaledPixmap(const QIcon &icon, int w, int h, int base)
93 {
94     QList<QSize> sizes=icon.availableSizes();
95     for (const QSize &s: sizes) {
96         if (s.width()==w && s.height()==h) {
97             return icon.pixmap(s);
98         }
99     }
100 
101     return icon.pixmap(base, base).scaled(w, h, Qt::KeepAspectRatio, Qt::SmoothTransformation);
102 }
103