4d9889db46
Replaced `MyWindow` with `MainWindow` featuring dynamic device widgets. Introduced `DeviceInfo`, `DeviceDAO`, and improved database interaction. Added flow layout and refactored image handling for better performance.
131 lines
3.7 KiB
C++
131 lines
3.7 KiB
C++
#include "FlowLayout.h"
|
|
#include <QtWidgets/qwidget.h>
|
|
|
|
FlowLayout::FlowLayout(QWidget *parent, int margin, int hSpacing, int vSpacing): QLayout(parent), m_hSpace(hSpacing),
|
|
m_vSpace(vSpacing) {
|
|
setContentsMargins(margin, margin, margin, margin);
|
|
}
|
|
|
|
FlowLayout::FlowLayout(const int margin, const int hSpacing, const int vSpacing) : m_hSpace(hSpacing),
|
|
m_vSpace(vSpacing) {
|
|
setContentsMargins(margin, margin, margin, margin);
|
|
}
|
|
|
|
FlowLayout::~FlowLayout() {
|
|
QLayoutItem *item;
|
|
while ((item = takeAt(0)))
|
|
delete item;
|
|
}
|
|
|
|
int FlowLayout::horizontalSpacing() const {
|
|
if (m_hSpace >= 0) {
|
|
return m_hSpace;
|
|
} else {
|
|
return smartSpacing(QStyle::PM_LayoutHorizontalSpacing);
|
|
}
|
|
}
|
|
|
|
int FlowLayout::verticalSpacing() const {
|
|
if (m_vSpace >= 0) {
|
|
return m_vSpace;
|
|
} else {
|
|
return smartSpacing(QStyle::PM_LayoutVerticalSpacing);
|
|
}
|
|
}
|
|
|
|
int FlowLayout::count() const {
|
|
return itemList.size();
|
|
}
|
|
|
|
QLayoutItem *FlowLayout::itemAt(int index) const {
|
|
return itemList.value(index);
|
|
}
|
|
|
|
QLayoutItem *FlowLayout::takeAt(int index) {
|
|
if (index >= 0 && index < itemList.size())
|
|
return itemList.takeAt(index);
|
|
return nullptr;
|
|
}
|
|
|
|
Qt::Orientations FlowLayout::expandingDirections() const {
|
|
return {};
|
|
}
|
|
|
|
bool FlowLayout::hasHeightForWidth() const {
|
|
return true;
|
|
}
|
|
|
|
int FlowLayout::heightForWidth(int width) const {
|
|
int height = doLayout(QRect(0, 0, width, 0), true);
|
|
return height;
|
|
}
|
|
|
|
void FlowLayout::setGeometry(const QRect &rect) {
|
|
QLayout::setGeometry(rect);
|
|
doLayout(rect, false);
|
|
}
|
|
|
|
QSize FlowLayout::sizeHint() const {
|
|
return minimumSize();
|
|
}
|
|
|
|
QSize FlowLayout::minimumSize() const {
|
|
QSize size;
|
|
for (const QLayoutItem *item: std::as_const(itemList))
|
|
size = size.expandedTo(item->minimumSize());
|
|
|
|
const QMargins margins = contentsMargins();
|
|
size += QSize(margins.left() + margins.right(), margins.top() + margins.bottom());
|
|
return size;
|
|
}
|
|
|
|
int FlowLayout::doLayout(const QRect &rect, bool testOnly) const {
|
|
int left, top, right, bottom;
|
|
getContentsMargins(&left, &top, &right, &bottom);
|
|
QRect effectiveRect = rect.adjusted(+left, +top, -right, -bottom);
|
|
int x = effectiveRect.x();
|
|
int y = effectiveRect.y();
|
|
int lineHeight = 0;
|
|
for (QLayoutItem *item: std::as_const(itemList)) {
|
|
const QWidget *wid = item->widget();
|
|
int spaceX = horizontalSpacing();
|
|
if (spaceX == -1)
|
|
spaceX = wid->style()->layoutSpacing(
|
|
QSizePolicy::PushButton, QSizePolicy::PushButton, Qt::Horizontal);
|
|
int spaceY = verticalSpacing();
|
|
if (spaceY == -1)
|
|
spaceY = wid->style()->layoutSpacing(
|
|
QSizePolicy::PushButton, QSizePolicy::PushButton, Qt::Vertical);
|
|
int nextX = x + item->sizeHint().width() + spaceX;
|
|
if (nextX - spaceX > effectiveRect.right() && lineHeight > 0) {
|
|
x = effectiveRect.x();
|
|
y = y + lineHeight + spaceY;
|
|
nextX = x + item->sizeHint().width() + spaceX;
|
|
lineHeight = 0;
|
|
}
|
|
|
|
if (!testOnly)
|
|
item->setGeometry(QRect(QPoint(x, y), item->sizeHint()));
|
|
|
|
x = nextX;
|
|
lineHeight = qMax(lineHeight, item->sizeHint().height());
|
|
}
|
|
return y + lineHeight - rect.y() + bottom;
|
|
}
|
|
|
|
void FlowLayout::addItem(QLayoutItem *item) {
|
|
itemList.append(item);
|
|
}
|
|
|
|
int FlowLayout::smartSpacing(QStyle::PixelMetric pm) const {
|
|
QObject *parent = this->parent();
|
|
if (!parent) {
|
|
return -1;
|
|
} else if (parent->isWidgetType()) {
|
|
QWidget *pw = static_cast<QWidget *>(parent);
|
|
return pw->style()->pixelMetric(pm, nullptr, pw);
|
|
} else {
|
|
return static_cast<QLayout *>(parent)->spacing();
|
|
}
|
|
}
|