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Core: Polish welcome screen grid hover animation

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* Fix offset calculation (arrived at top in less than 200ms)
* Use "OutQuad" easing for the speed of the sliding text
* "Fade in" separator line and description during animation
* Animate covering of image by background color
* Draw rectangles with qdrawutil (fixes HighDpi)
* Change refresh timer from 5 to 10 ms

Change-Id: I53899227d875a3faf086ebc6b3d83e5eb9dcaa12
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
This commit is contained in:
Alessandro Portale
2021-09-19 19:32:52 +02:00
parent 76760d8d80
commit edfdcd1a53
1 changed files with 21 additions and 11 deletions
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32
src/plugins/coreplugin/welcomepagehelper.cpp
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@@ -30,6 +30,7 @@
#include <utils/qtcassert.h>
#include <utils/theme/theme.h>
#include <QEasingCurve>
#include <QHeaderView>
#include <QHoverEvent>
#include <QLayout>
@@ -38,6 +39,8 @@
#include <QPixmapCache>
#include <QTimer>
#include <qdrawutil.h>
namespace Core {
using namespace Utils;
@@ -483,6 +486,7 @@ void ListItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &opti
QTextOption wrapped;
wrapped.setWrapMode(QTextOption::WordWrap);
int offset = 0;
float animationProgress = 0; // Linear increase from 0.0 to 1.0 during hover animation
if (hovered) {
if (index != m_previousIndex) {
m_previousIndex = index;
@@ -491,9 +495,11 @@ void ListItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &opti
m_currentWidget = qobject_cast<QAbstractItemView *>(
const_cast<QWidget *>(option.widget));
}
offset = m_startTime.elapsed() * GridProxyModel::GridItemHeight / 200; // Duration 200 ms.
animationProgress = m_startTime.elapsed() / 200.0; // Duration 200 ms.
static const QEasingCurve animationCurve(QEasingCurve::OutQuad);
offset = animationCurve.valueForProgress(animationProgress) * shiftY;
if (offset < shiftY)
QTimer::singleShot(5, this, &ListItemDelegate::goon);
QTimer::singleShot(10, this, &ListItemDelegate::goon);
else if (offset > shiftY)
offset = shiftY;
} else {
@@ -504,9 +510,9 @@ void ListItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &opti
const QRect shiftedTextRect = textRect.adjusted(0, -offset, 0, -offset);
// The pixmap.
if (offset == 0) {
if (offset < shiftY) {
QPixmap pm = index.data(ListModel::ItemImageRole).value<QPixmap>();
QRect inner(x + 11, y - offset, ListModel::defaultImageSize.width(),
QRect inner(x + 11, y, ListModel::defaultImageSize.width(),
ListModel::defaultImageSize.height());
QRect pixmapRect = inner;
if (!pm.isNull()) {
@@ -527,8 +533,13 @@ void ListItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &opti
painter->setFont(sizedFont(11, option.widget));
painter->drawText(pixmapRect.adjusted(6, 10, -6, -10), item->description, wrapped);
}
painter->setPen(foregroundColor1);
painter->drawRect(pixmapRect.adjusted(-1, -1, -1, -1));
qDrawPlainRect(painter, pixmapRect.translated(-1, -1), foregroundColor1);
}
// The description background rect
if (offset) {
QRect backgroundRect = shiftedTextRect.adjusted(0, -16, 0, 0);
painter->fillRect(backgroundRect, backgroundColor);
}
// The title of the example.
@@ -548,6 +559,7 @@ void ListItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &opti
if (offset) {
int ll = nameRect.bottom() + 5;
painter->setPen(lightColor);
painter->setOpacity(animationProgress); // "fade in" separator line and description
painter->drawLine(x, ll, x + w, ll);
}
@@ -558,6 +570,7 @@ void ListItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &opti
painter->setPen(foregroundColor2);
painter->setFont(sizedFont(11, option.widget));
painter->drawText(descRect, item->description, wrapped);
painter->setOpacity(1);
}
// Separator line between text and 'Tags:' section
@@ -591,11 +604,8 @@ void ListItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &opti
}
// Box it when hovered.
if (hovered) {
painter->setPen(lightColor);
painter->drawRect(rc.adjusted(0, 0, -1, -1));
}
if (hovered)
qDrawPlainRect(painter, rc, lightColor);
}
bool ListItemDelegate::editorEvent(QEvent *event, QAbstractItemModel *model,