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/*
* Copyright (c) 2014 Kevin Smith and Remko Tronçon
* Licensed under the GNU General Public License v3.
* See Documentation/Licenses/GPLv3.txt for more information.
*/
#include <Swift/QtUI/Trellis/QtGridSelectionDialog.h>
#include <QStyle>
#include <QPaintEvent>
#include <QPainter>
#include <QStyleOptionFrame>
#include <QStyleOptionMenuItem>
namespace Swift {
QtGridSelectionDialog::QtGridSelectionDialog(QWidget* parent) : QWidget(parent)
{
frameSize = QSize(23,23) * 2;
maxGridSize = QSize(7,7);
minGridSize = QSize(1,1);
currentGridSize = QSize(1,1);
padding = 4;
setWindowFlags(Qt::Popup);
horizontalMargin = style()->pixelMetric(QStyle::PM_MenuVMargin);
verticalMargin = style()->pixelMetric(QStyle::PM_MenuVMargin);
}
QSize QtGridSelectionDialog::sizeHint() const
{
// PM_MenuVMargin | frameSize | ( padding | frameSize ) * | PM_MenuVMargin
int width = horizontalMargin + frameSize.width() + (padding + frameSize.width()) * (currentGridSize.width() - 1) + horizontalMargin;
int height = verticalMargin + frameSize.height() + (padding + frameSize.height()) * (currentGridSize.height() - 1) + verticalMargin;
return QSize(width, height);
}
void QtGridSelectionDialog::setCurrentGridSize(const QSize& size) {
currentGridSize = size;
emit currentGridSizeChanged(size);
}
QSize QtGridSelectionDialog::getCurrentGridSize() const {
return currentGridSize;
}
void QtGridSelectionDialog::setMinGridSize(const QSize& size) {
minGridSize = size;
emit minGridSizeChanged(size);
}
QSize QtGridSelectionDialog::getMinGridSize() const {
return minGridSize;
}
void QtGridSelectionDialog::setMaxGridSize(const QSize& size) {
maxGridSize = size;
emit maxGridSizeChanged(size);
}
QSize QtGridSelectionDialog::getMaxGridSize() const {
return maxGridSize;
}
void QtGridSelectionDialog::keyReleaseEvent(QKeyEvent* event) {
if (event) {
QSize newGridSize = currentGridSize;
if (event->key() == Qt::Key_Up) {
newGridSize += QSize(0, -1);
}
else if (event->key() == Qt::Key_Down) {
newGridSize += QSize(0, 1);
}
else if (event->key() == Qt::Key_Left) {
newGridSize += QSize(-1, 0);
}
else if (event->key() == Qt::Key_Right) {
newGridSize += QSize(1, 0);
}
else if (event->key() == Qt::Key_Return) {
hide();
setCurrentGridSize(currentGridSize);
}
if (minGridSize.expandedTo(newGridSize).boundedTo(maxGridSize) != currentGridSize) {
currentGridSize = minGridSize.expandedTo(newGridSize).boundedTo(maxGridSize);
resize(sizeHint());
}
}
}
void QtGridSelectionDialog::mousePressEvent(QMouseEvent*) {
hide();
setCurrentGridSize(currentGridSize);
}
void QtGridSelectionDialog::paintEvent(QPaintEvent*) {
QPainter painter(this);
QStyleOptionMenuItem option;
option.state = QStyle::State_Enabled | QStyle::State_Selected;
option.menuRect = QRect(QPoint(0,0), frameSize);
for (int x = 0; x < currentGridSize.width(); x++) {
for (int y = 0; y < currentGridSize.height(); y++) {
int xPos = horizontalMargin + (x * (frameSize.width() + padding));
int yPos = verticalMargin + (y * (frameSize.height() + padding));
option.menuRect.moveTo(QPoint(xPos, yPos));
option.rect = option.menuRect;
style()->drawControl(QStyle::CE_MenuItem, &option, &painter, 0);
}
}
}
void QtGridSelectionDialog::showEvent(QShowEvent*) {
int xPos = horizontalMargin + frameSize.width() + (padding + frameSize.width()) * (currentGridSize.width() - 1) - frameSize.width()/2;
int yPos = verticalMargin + frameSize.height() + (padding + frameSize.height()) * (currentGridSize.height() - 1) - frameSize.height()/2;
QCursor::setPos(mapToGlobal(QPoint(xPos, yPos)));
setMouseTracking(true);
}
void QtGridSelectionDialog::hideEvent(QHideEvent*) {
setMouseTracking(false);
}
void QtGridSelectionDialog::mouseMoveEvent(QMouseEvent*) {
QPoint diff = (frameGeometry().bottomRight() - QCursor::pos());
QSize newDimensions = currentGridSize;
if (diff.x() > frameSize.width() * 1.5) {
newDimensions -= QSize(diff.x() / (frameSize.width() * 1.5), 0);
}
if (diff.y() > frameSize.height() * 1.5) {
newDimensions -= QSize(0, diff.y() / (frameSize.height() * 1.5));
}
if (minGridSize.expandedTo(newDimensions).boundedTo(maxGridSize) != currentGridSize) {
currentGridSize = minGridSize.expandedTo(newDimensions).boundedTo(maxGridSize);
resize(sizeHint());
}
}
void QtGridSelectionDialog::leaveEvent(QEvent *) {
QPoint diff = (frameGeometry().bottomRight() - QCursor::pos());
QSize newGridSize = currentGridSize;
if (diff.x() < 0) {
newGridSize += QSize(1,0);
}
if (diff.y() < 0) {
newGridSize += QSize(0,1);
}
if (minGridSize.expandedTo(newGridSize).boundedTo(maxGridSize) != currentGridSize) {
currentGridSize = minGridSize.expandedTo(newGridSize).boundedTo(maxGridSize);
resize(sizeHint());
}
}
}
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Swift