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mirror of https://github.com/f4exb/sdrangel.git synced 2024-12-04 14:03:51 -05:00
sdrangel/sdrgui/gui/rollupcontents.cpp
Jon Beniston c966f1cb5a dd maximize button to MainSpectrum and expandible Channels and Features.
Add sizeToContents in ChannelGUI and FeatureGUI, called when widget is
rolled, so we can remove resizing code from all of the individual
channels and features.

In RollupContents, use minimumSizeHint for calculated size, so that
minimumWidth can come from .ui file.

In DeviceGUI::sizeToContents(), call adjustSize(), so Device GUIs start
out at minimum needed size (which should restore appearance prior to
last patch).

In stackSubWindows, use available space for channels if no
spectrum/features present.
In stackSubWindows, fix spectrum from being sized too big, resulting in
scroll bars appearing.
Reset user-defined channel width in stackSubWindows, when channels are
removed.
Don't stack maximized windows.

There's one hack in Channel/FeatureGUI::maximizeWindow(). It seems that
when maximimzing a window, QOpenGLWidgets aren't always paint properly
immediately afterwards, so the code forces an additional update. I can't
see why the first call to paintGL doesn't work.
2022-11-11 12:24:27 +00:00

425 lines
12 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2022 Edouard Griffiths, F4EXB //
// //
// 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 as 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 V3 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 <QEvent>
#include <QPainter>
#include <QPainterPath>
#include <QMouseEvent>
#include <QDialog>
#include <QDesktopServices>
#include "gui/rollupcontents.h"
#include "settings/rollupstate.h"
#include "ui_glspectrumgui.h"
RollupContents::RollupContents(QWidget* parent) :
QWidget(parent),
m_streamIndicator("S"),
// m_channelWidget(true),
m_newHeight(0)
{
setMinimumSize(250, 150);
setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
setBackgroundRole(QPalette::Window);
setAutoFillBackground(false);
setAttribute(Qt::WA_OpaquePaintEvent, true);
}
void RollupContents::saveState(RollupState &state) const
{
QList<RollupState::RollupChildState>& childrenStates = state.getChildren();
childrenStates.clear();
for (const auto &child : children())
{
QWidget* r = qobject_cast<QWidget*>(child);
if (r && isRollupChild(r)) {
childrenStates.push_back({r->objectName(), r->isHidden()});
}
}
}
void RollupContents::restoreState(const RollupState& state)
{
const QList<RollupState::RollupChildState>& childrenStates = state.getChildren();
for (const auto &object : children())
{
QWidget* r = qobject_cast<QWidget*>(object);
if (r && isRollupChild(r))
{
for (const auto &childState : childrenStates)
{
if (childState.m_objectName.compare(r->objectName()) == 0)
{
if (childState.m_isHidden) {
r->hide();
} else {
r->show();
}
break;
}
}
}
}
}
bool RollupContents::hasExpandableWidgets()
{
for (int i = 0; i < children().count(); ++i)
{
QWidget* r = qobject_cast<QWidget*>(children()[i]);
if (r && isRollupChild(r) && !r->isHidden() && (r->sizePolicy().verticalPolicy() == QSizePolicy::Expanding)) {
return true;
}
}
return false;
}
int RollupContents::arrangeRollups()
{
QFontMetrics fm(font());
int pos;
int minWidthHint = 0;
// First calculate minimum height needed, to determine how much extra space
// we have that can be split between expanding widgets
pos = 2; // fm.height() + 4;
int expandingChildren = 0;
for (int i = 0; i < children().count(); ++i)
{
QWidget* r = qobject_cast<QWidget*>(children()[i]);
if ((r != nullptr) && isRollupChild(r))
{
pos += fm.height() + 2;
if (!r->isHidden())
{
if (r->sizePolicy().verticalPolicy() & QSizePolicy::ExpandFlag) {
expandingChildren++;
}
int h = 0;
if (r->hasHeightForWidth()) {
h = r->heightForWidth(width() - 4);
} else {
h = r->minimumSizeHint().height();
}
minWidthHint = std::max(minWidthHint, r->minimumSizeHint().width());
pos += h + 5;
}
}
}
// We use minimumSizeHint for auto-calculated width, so
// minimumWidth can be set by user in .ui file
m_minimumSizeHint.setHeight(pos);
m_minimumSizeHint.setWidth(minWidthHint);
// However, we need to set minimumHeight, as the value in the .ui
// files is typically set as the minimum height for when widget is unrolled
// but when rolled-up, we want it to be smaller
setMinimumHeight(pos);
// Split extra space equally between widgets
// If there's a remainder, we give it to the first widget
// In the future, we should probably respect 'Vertical Stretch'
int extraSpace;
int firstExtra;
if ((expandingChildren > 0) && (m_newHeight > pos))
{
int totalExtra = m_newHeight - pos;
extraSpace = totalExtra / expandingChildren;
firstExtra = totalExtra - (extraSpace * expandingChildren);
}
else
{
extraSpace = 0;
firstExtra = 0;
}
// Now reposition and resize child widgets
pos = 2; // fm.height() + 4;
for (int i = 0; i < children().count(); ++i)
{
QWidget* r = qobject_cast<QWidget*>(children()[i]);
if ((r != nullptr) && isRollupChild(r))
{
pos += fm.height() + 2;
if (!r->isHidden())
{
r->move(2, pos + 3);
int h = 0;
if (r->hasHeightForWidth()) {
h = r->heightForWidth(width() - 4);
} else {
h = r->minimumSizeHint().height();
}
if (r->sizePolicy().verticalPolicy() & QSizePolicy::ExpandFlag)
{
h += extraSpace;
h += firstExtra;
firstExtra = 0;
}
r->resize(width() - 4, h);
pos += r->height() + 5;
}
}
}
if (expandingChildren == 0) {
setMaximumHeight(pos);
} else {
setMaximumHeight(16777215);
}
updateGeometry();
return pos;
}
void RollupContents::paintEvent(QPaintEvent*)
{
QPainter p(this);
QColor frameColor = palette().highlight().color().darker(125);
// QColor frameColor = Qt::black;
// Eigenbau
QFontMetrics fm(font());
p.setRenderHint(QPainter::Antialiasing, true);
// Ecken (corners)
// p.setPen(Qt::NoPen);
// p.setBrush(palette().base());
// p.drawRect(0, 0, 5, 5);
// p.drawRect(width() - 5, 0, 5, 5);
// p.drawRect(0, height() - 5, 5, 5);
// p.drawRect(width() - 5, height() - 5, 5, 5);
// Rahmen (frame)
// p.setPen(m_highlighted ? Qt::white : frameColor);
p.setBrush(palette().window());
QRectF r(rect());
// r.adjust(0.5, 0.5, -0.5, -0.5);
// p.drawRoundedRect(r, 3.0, 3.0, Qt::AbsoluteSize);
// p.drawRect(r);
p.fillRect(r, palette().window());
// Rollups
int pos = 2; // fm.height() + 4;
const QObjectList& c = children();
QObjectList::ConstIterator w = c.begin();
QObjectList::ConstIterator n = c.begin();
for (n = c.begin(); n != c.end(); ++n)
{
if (qobject_cast<QWidget*>(*n) != nullptr) {
break;
}
}
for (w = n; w != c.end(); w = n)
{
if (n != c.end()) {
++n;
}
for (; n != c.end(); ++n)
{
if (qobject_cast<QWidget*>(*n) != nullptr) {
break;
}
}
pos += paintRollup(qobject_cast<QWidget*>(*w), pos, &p, n == c.end(), frameColor);
}
}
int RollupContents::paintRollup(QWidget* rollup, int pos, QPainter* p, bool last, const QColor& frameColor)
{
QFontMetrics fm(font());
int height = 1;
// Titel-Abschlusslinie
if (!rollup->isHidden())
{
p->setPen(palette().dark().color());
p->drawLine(QPointF(1.5, pos + fm.height() + 1.5), QPointF(width() - 1.5, pos + fm.height() + 1.5));
p->setPen(palette().light().color());
p->drawLine(QPointF(1.5, pos + fm.height() + 2.5), QPointF(width() - 1.5, pos + fm.height() + 2.5));
height += 2;
}
else
{
if (!last)
{
p->setPen(frameColor);
p->drawLine(QPointF(1.5, pos + fm.height() + 1.5), QPointF(width() - 1.5, pos + fm.height() + 1.5));
height++;
}
}
// Titel
p->setPen(palette().windowText().color());
p->drawText(QRect(2 + fm.height(), pos, width() - 4 - fm.height(), fm.height()),
fm.elidedText(rollup->windowTitle(), Qt::ElideMiddle, width() - 4 - fm.height(), 0));
height += fm.height();
// Ausklapp-Icon
p->setPen(palette().windowText().color());
p->setBrush(palette().windowText());
if (!rollup->isHidden())
{
QPolygonF a;
a.append(QPointF(3.5, pos + 2));
a.append(QPointF(3.5 + fm.ascent(), pos + 2));
a.append(QPointF(3.5 + fm.ascent() / 2.0, pos + fm.height() - 2));
p->drawPolygon(a);
}
else
{
QPolygonF a;
a.append(QPointF(3.5, pos + 2));
a.append(QPointF(3.5, pos + fm.height() - 2));
a.append(QPointF(3.5 + fm.ascent(), pos + fm.height() / 2));
p->drawPolygon(a);
}
// Inhalt
if (!rollup->isHidden() && (!last))
{
// Rollup-Abschlusslinie
p->setPen(frameColor);
p->drawLine(QPointF(1.5, pos + fm.height() + rollup->height() + 6.5),
QPointF(width() - 1.5, pos + fm.height() + rollup->height() + 6.5));
height += rollup->height() + 4;
}
return height;
}
void RollupContents::resizeEvent(QResizeEvent* size)
{
m_newHeight = size->size().height();
arrangeRollups();
QWidget::resizeEvent(size);
}
void RollupContents::mousePressEvent(QMouseEvent* event)
{
QFontMetrics fm(font());
// check if we need to change a rollup widget
int pos = 2; // fm.height() + 4;
for (int i = 0; i < children().count(); ++i)
{
QWidget* r = qobject_cast<QWidget*>(children()[i]);
if (r)
{
if ((event->y() >= pos) && (event->y() < (pos + fm.height() + 3)))
{
if (r->isHidden())
{
r->show();
//emit widgetRolled(r, true);
}
else
{
r->hide();
//emit widgetRolled(r, false);
}
arrangeRollups();
repaint();
return;
}
else
{
pos += fm.height() + 2;
if (!r->isHidden()) {
pos += r->height() + 5;
}
}
}
}
}
bool RollupContents::event(QEvent* event)
{
if (event->type() == QEvent::ChildAdded)
{
((QChildEvent*)event)->child()->installEventFilter(this);
arrangeRollups();
}
else if (event->type() == QEvent::ChildRemoved)
{
((QChildEvent*)event)->child()->removeEventFilter(this);
arrangeRollups();
}
else if (event->type() == QEvent::LayoutRequest)
{
arrangeRollups();
}
return QWidget::event(event);
}
bool RollupContents::eventFilter(QObject* object, QEvent* event)
{
if (event->type() == QEvent::Show)
{
if (children().contains(object))
{
arrangeRollups();
emit widgetRolled(qobject_cast<QWidget*>(object), true);
}
}
else if (event->type() == QEvent::Hide)
{
if (children().contains(object))
{
arrangeRollups();
emit widgetRolled(qobject_cast<QWidget*>(object), false);
}
}
else if (event->type() == QEvent::WindowTitleChange)
{
if (children().contains(object)) {
repaint();
}
}
return QWidget::eventFilter(object, event);
}
bool RollupContents::isRollupChild(QWidget *childWidget)
{
return (qobject_cast<QDialog*>(childWidget) == nullptr); // exclude Dialogs from rollups
}