source: src/gui/daynavigatorwidget.cpp

Last change on this file was 6c5eece, checked in by Philipp Spitzer <philipp@…>, 5 months ago

Partially fix bug Debian BTS #992236 (width of DayNavigatorWidget?).

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=992236
Could be reproduced by setting environment variable QT_FONT_DPI to 200.

  • Property mode set to 100644
File size: 4.9 KB
Line 
1/*
2 * Copyright (C) 2010 Ixonos Plc.
3 * Copyright (C) 2011-2021 Philipp Spitzer, gregor herrmann, Stefan Stahl
4 *
5 * This file is part of ConfClerk.
6 *
7 * ConfClerk is free software: you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the Free
9 * Software Foundation, either version 2 of the License, or (at your option)
10 * any later version.
11 *
12 * ConfClerk is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * ConfClerk.  If not, see <http://www.gnu.org/licenses/>.
19 */
20
21#include <QPainter>
22#include <QLabel>
23
24#include "daynavigatorwidget.h"
25#include "conference.h"
26#include "application.h"
27
28
29DayNavigatorWidget::DayNavigatorWidget(QWidget *aParent): QWidget(aParent) {
30    setupUi(this);   
31
32    connect(prevDayButton, SIGNAL(clicked()), SLOT(prevDayButtonClicked()));
33    connect(nextDayButton, SIGNAL(clicked()), SLOT(nextDayButtonClicked()));
34
35    configureNavigation();
36}
37
38
39void DayNavigatorWidget::setDates(const QDate &aStartDate, const QDate &aEndDate) {
40    Q_ASSERT(aStartDate.isValid() && aEndDate.isValid() && aStartDate<=aEndDate);
41
42    mStartDate = aStartDate;
43    mEndDate = aEndDate;
44
45    if (!mCurDate.isValid()) mCurDate = mStartDate;
46    // if mCurDate is out of range, set it to mstartDate
47    else if (mCurDate < mStartDate || mCurDate > mEndDate) mCurDate = mStartDate;
48
49    configureNavigation();
50    emit(dateChanged(mCurDate));
51    this->update();
52}
53
54
55void DayNavigatorWidget::setCurDate(const QDate& curDate) {
56    Q_ASSERT(curDate.isValid());
57    if (curDate == mCurDate) return;
58
59    if (!mStartDate.isValid()) {
60        // the start and end date have not been set
61        mStartDate = curDate;
62        mEndDate = curDate;
63        mCurDate = curDate;
64    }
65
66    else if (curDate < mStartDate) mCurDate = mStartDate;
67    else if (curDate > mEndDate) mCurDate = mEndDate;
68    else mCurDate = curDate;
69
70    configureNavigation();
71    emit(dateChanged(mCurDate));
72    this->update();
73}
74
75
76void DayNavigatorWidget::unsetDates() {
77    mStartDate= QDate();
78    mEndDate = QDate();
79    mCurDate = QDate();
80
81    configureNavigation();
82    emit(dateChanged(mCurDate));
83    this->update();
84}
85
86QSize DayNavigatorWidget::minimumSizeHint() const {
87#ifdef MAEMO
88    return QSize(20, 0);
89#else
90    return QSize(fontMetrics().lineSpacing() * 3 / 2, 0);
91#endif
92}
93
94
95void DayNavigatorWidget::configureNavigation() {
96    prevDayButton->setDisabled(!mStartDate.isValid() || mCurDate == mStartDate);
97    nextDayButton->setDisabled(!mEndDate.isValid() || mCurDate == mEndDate);
98}
99
100
101void DayNavigatorWidget::prevDayButtonClicked() {
102    if(mCurDate <= mStartDate) return;
103    mCurDate = mCurDate.addDays(-1);
104    configureNavigation();
105    emit(dateChanged(mCurDate));
106    this->update();
107}
108
109
110void DayNavigatorWidget::nextDayButtonClicked() {
111    if(mCurDate >= mEndDate) return;
112    mCurDate = mCurDate.addDays(1);
113    configureNavigation();
114    emit(dateChanged(mCurDate));
115    this->update();
116}
117
118
119void DayNavigatorWidget::paintEvent(QPaintEvent *aEvent) {
120    Q_UNUSED(aEvent);
121    QString selectedDateStr;
122    if (mCurDate.isValid()) {
123        QString selectedDateFormat =
124#ifdef MAEMO
125                "dddd\nyyyy-MM-dd";
126#else
127                "dddd • yyyy-MM-dd";
128#endif
129        selectedDateStr = mCurDate.toString(selectedDateFormat);
130        bool hasConference = ((Application*) qApp)->hasActiveConference();
131        if (hasConference) {
132            Conference& conference = ((Application*) qApp)->activeConference();
133            if (conference.hasDisplayTimeShift() && conference.displayTimeShift() != 0) {
134                QTime shift(0, 0);
135                bool minus = conference.displayTimeShift() < 0;
136                shift = shift.addSecs(conference.displayTimeShift() * 60 * (minus ? -1 : 1));
137                selectedDateStr += " • " + (minus ? QString("-") : "+") + shift.toString("HH:mm");
138            }
139        }
140    } else {
141        selectedDateStr = tr("No date");
142    }
143    QPainter painter(this);
144    painter.save();
145
146    // rectangle only for the text
147    QRect q(-selectedDate->height()-selectedDate->y(), selectedDate->x(), selectedDate->height(), selectedDate->width());
148    painter.rotate(270);
149
150    // font size adjustion, static on maemo, dynamically otherwise
151    QFont f = painter.font();
152#ifdef MAEMO
153    qreal factor = 0.8;
154#else
155#if QT_VERSION >= 0x050b00 // QT 5.11
156    auto dateStrWidth = painter.fontMetrics().horizontalAdvance(selectedDateStr);
157#else
158    auto dateStrWidth = painter.fontMetrics().width(selectedDateStr);
159#endif
160    qreal factor = (qreal) 2 * q.width() / dateStrWidth;
161#endif
162    if (factor < 1) f.setPointSizeF(f.pointSizeF() * factor);
163    painter.setFont(f);
164
165    painter.drawText(q, Qt::AlignCenter, selectedDateStr);
166    painter.restore();
167}
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