alecs/plasma-framework
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Allow free resizing (without maintaining aspect ratio) by holding down CTRL.

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This should probably be documented somewhere.  Plasma should probably have docs.


svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=757567
This commit is contained in:
Alex Merry 2008-01-05 11:58:48 +00:00
parent 91300d6fc9
commit ec09262001
2 changed files with 63 additions and 27 deletions
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87
applethandle.cpp
View File

@ -22,6 +22,7 @@
#include <QtGui/QGraphicsSceneMouseEvent>
#include <QtGui/QLinearGradient>
#include <QtGui/QPainter>
#include <QtGui/QApplication>
#include <KColorScheme>
#include <KIcon>
@ -51,7 +52,8 @@ AppletHandle::AppletHandle(Containment *parent, Applet *applet)
m_anim(FadeIn),
m_animId(0),
m_angle(0.0),
m_scale(1.0)
m_scaleWidth(1.0),
m_scaleHeight(1.0)
{
KColorScheme colors(QPalette::Active, KColorScheme::View, Theme::self()->colors());
m_gradientColor = colors.background(KColorScheme::NormalBackground).color();
@ -212,15 +214,15 @@ void AppletHandle::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
if (m_applet && event->button() == Qt::LeftButton) {
switch (m_pressedButton) {
case RotateButton: {
if (m_scale > 0) {
if (m_scaleWidth > 0 && m_scaleHeight > 0) {
QRectF rect(m_applet->boundingRect());
const qreal newWidth = rect.width() * m_scale;
const qreal newHeight = rect.height() * m_scale;
const qreal newWidth = rect.width() * m_scaleWidth;
const qreal newHeight = rect.height() * m_scaleHeight;
m_applet->resetTransform();
m_applet->resize(newWidth, newHeight);
scale(1.0/m_scale, 1.0/m_scale);
scale(1.0/m_scaleWidth, 1.0/m_scaleHeight);
moveBy((rect.width() - newWidth) / 2, (rect.height() - newHeight) / 2);
m_scale = 0;
m_scaleWidth = m_scaleHeight = 0;
}
QRectF rect(boundingRect());
@ -324,17 +326,6 @@ void AppletHandle::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
QRectF rect = QRectF(m_applet->pos(), m_applet->size());
QPointF center = rect.center();
m_angle = _k_angleForPoints(center, pressPos, event->pos());
if (fabs(remainder(m_originalAngle+m_angle, snapAngle)) < 0.15) {
m_angle = m_angle - remainder(m_originalAngle+m_angle, snapAngle);
}
qreal newScale = _k_distanceForPoint(event->pos()-center) / _k_distanceForPoint(pressPos-center);
if (qAbs(newScale-1.0)<=0.1) {
newScale = 1.0;
}
qreal w = m_applet->size().width();
qreal h = m_applet->size().height();
QSizeF min = m_applet->minimumSize();
@ -347,21 +338,65 @@ void AppletHandle::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
min += QSizeF(16, 16);
}
//FIXME: this code will only work if we are keeping the aspect ratio, as we currently do
// as it resets only on the width, which will break if we allow resizing of width
// and height independantly
if (newScale * w < min.width() || newScale * h < min.height()) {
m_scale = min.width() / w;
} else if (newScale * w > max.width() && newScale * h > max.height()) {
m_scale = max.width() / w;
if (QApplication::keyboardModifiers() & Qt::ControlModifier) {
m_angle = 0;
qreal newScaleWidth = 0;
qreal newScaleHeight = 0;
QPointF startDistance(pressPos - center);
QPointF currentDistance(event->pos() - center);
newScaleWidth = currentDistance.x() / startDistance.x();
newScaleHeight = currentDistance.y() / startDistance.y();
if (qAbs(newScaleWidth-1.0)<=0.1) {
newScaleWidth = 1.0;
}
if (qAbs(newScaleHeight-1.0)<=0.1) {
newScaleHeight = 1.0;
}
if (newScaleHeight * h < min.height()) {
m_scaleHeight = min.height() / h;
} else if (newScaleHeight * h > max.height()) {
m_scaleHeight = max.height() / h;
} else {
m_scale = newScale;
m_scaleHeight = newScaleHeight;
}
if (newScaleWidth * w < min.width()) {
m_scaleWidth = min.width() / w;
} else if (newScaleWidth * w > max.width()) {
m_scaleWidth = max.width() / w;
} else {
m_scaleWidth = newScaleWidth;
}
} else {
m_angle = _k_angleForPoints(center, pressPos, event->pos());
if (fabs(remainder(m_originalAngle+m_angle, snapAngle)) < 0.15) {
m_angle = m_angle - remainder(m_originalAngle+m_angle, snapAngle);
}
qreal newScale = 0;
newScale = _k_distanceForPoint(event->pos()-center) / _k_distanceForPoint(pressPos-center);
if (qAbs(newScale-1.0)<=0.1) {
newScale = 1.0;
}
if (newScale * w < min.width() || newScale * h < min.height()) {
m_scaleWidth = m_scaleHeight = qMax(min.width() / w, min.height() / h);
} else if (newScale * w > max.width() && newScale * h > max.height()) {
m_scaleWidth = m_scaleHeight = qMin(max.width() / w, max.height() / h);
} else {
m_scaleHeight = m_scaleWidth = newScale;
}
}
QTransform matrix;
matrix.translate(center.x(), center.y());
matrix.rotateRadians(m_angle);
matrix.scale(m_scale, m_scale);
matrix.scale(m_scaleWidth, m_scaleHeight);
matrix.translate(-center.x(), -center.y());
setTransform(matrix);
} else {

3
applethandle_p.h
View File

@ -81,7 +81,8 @@ class AppletHandle : public QObject, public QGraphicsItem
FadeType m_anim;
Phase::AnimId m_animId;
qreal m_angle;
qreal m_scale;
qreal m_scaleWidth;
qreal m_scaleHeight;
qreal m_originalAngle;
QColor m_gradientColor;
};