void Layout::draw(QPainter* painter, float width, float height)
{
if (hasBackgroundColor())
painter->fillRect(0, 0, width, height, getBackgroundColor());
if (background_image)
{
if (width == background_image->width() && height == background_image->height())
painter->drawPixmap(QRectF(0, 0, width, height), *background_image, QRectF(0, 0, background_image->width(), background_image->height()));
else
{
if (!background_image_cache || background_image_cache->width() != width || background_image_cache->height() != height)
{
delete background_image_cache;
background_image_cache = new QPixmap(width, height);
QPainter cache_painter(background_image_cache);
cache_painter.setRenderHint(QPainter::SmoothPixmapTransform, true);
cache_painter.drawPixmap(QRectF(0, 0, width, height), *background_image, QRectF(0, 0, background_image->width(), background_image->height()));
cache_painter.setRenderHint(QPainter::SmoothPixmapTransform, false);
}
painter->drawPixmap(QRectF(0, 0, width, height), *background_image_cache, QRectF(0, 0, background_image_cache->width(), background_image_cache->height()));
}
}
for (std::map<QString, Point*>::iterator it = points.begin(); it != points.end(); ++it)
{
Point* point = it->second;
Font* font_data = point->strong_font ? point->font_strong : point->font_normal;
QFont font = qFontFromFont(font_data, height);
QFontMetricsF font_metrics(font);
// NOTE: Could optimize this by caching the size
float text_width = font_metrics.width(point->text);
float text_height = font_metrics.height(); // TODO: Count lines
QRectF rect = QRectF(point->pos.x()*width - 0.5f*text_width, point->pos.y()*height - 0.5f*text_height, text_width, text_height);
Qt::Alignment alignment = point->alignment;
if (point->alignment & Qt::AlignLeft)
rect.translate(0.5f*text_width, 0);
else if (point->alignment & Qt::AlignRight)
rect.translate(-0.5f*text_width, 0);
if (point->alignment & Qt::AlignTop)
rect.translate(0, 0.5f*text_height);
else if (point->alignment & Qt::AlignBottom)
rect.translate(0, -0.5f*text_height);
else if (point->alignment & Qt::AlignAbsolute)
{
rect.translate(0, 0.5f*text_height - font_metrics.ascent());
alignment = (alignment & ~Qt::AlignAbsolute) | Qt::AlignVCenter;
}
painter->setFont(font);
painter->setPen(font_data->color);
if (point->max_width > 0)
painter->drawText(rect, alignment, font_metrics.elidedText(point->text, Qt::ElideMiddle, point->max_width*width));
else
painter->drawText(rect, alignment, point->text);
}
}
void PlaylistView::paintEvent(QPaintEvent* event) {
// Reimplemented to draw the background image.
// Reimplemented also to draw the drop indicator
// When the user is dragging some stuff over the playlist paintEvent gets
// called for the entire viewport every time the user moves the mouse.
// The drawTree is kinda expensive, so we cache the result and draw from the
// cache while the user is dragging. The cached pixmap gets invalidated in
// dragLeaveEvent, dropEvent and scrollContentsBy.
// Draw background
if (background_image_type_ == Custom ||
background_image_type_ == AlbumCover) {
if (!background_image_.isNull() || !previous_background_image_.isNull()) {
QPainter background_painter(viewport());
// Check if we should recompute the background image
if (height() != last_height_ || width() != last_width_ ||
force_background_redraw_) {
if (background_image_.isNull()) {
cached_scaled_background_image_ = QPixmap();
} else {
cached_scaled_background_image_ =
QPixmap::fromImage(background_image_.scaled(
width(), height(), Qt::KeepAspectRatioByExpanding,
Qt::SmoothTransformation));
}
last_height_ = height();
last_width_ = width();
force_background_redraw_ = false;
}
// Actually draw the background image
if (!cached_scaled_background_image_.isNull()) {
// Set opactiy only if needed, as this deactivate hardware acceleration
if (!qFuzzyCompare(previous_background_image_opacity_, qreal(0.0))) {
background_painter.setOpacity(1.0 -
previous_background_image_opacity_);
}
background_painter.drawPixmap(
(width() - cached_scaled_background_image_.width()) / 2,
(height() - cached_scaled_background_image_.height()) / 2,
cached_scaled_background_image_);
}
// Draw the previous background image if we're fading
if (!previous_background_image_.isNull()) {
background_painter.setOpacity(previous_background_image_opacity_);
background_painter.drawPixmap(
(width() - previous_background_image_.width()) / 2,
(height() - previous_background_image_.height()) / 2,
previous_background_image_);
}
}
}
QPainter p(viewport());
if (drop_indicator_row_ != -1) {
if (cached_tree_.isNull()) {
cached_tree_ = QPixmap(size());
cached_tree_.fill(Qt::transparent);
QPainter cache_painter(&cached_tree_);
drawTree(&cache_painter, event->region());
}
p.drawPixmap(0, 0, cached_tree_);
} else {
drawTree(&p, event->region());
return;
}
const int first_column = header_->logicalIndex(0);
// Find the y position of the drop indicator
QModelIndex drop_index = model()->index(drop_indicator_row_, first_column);
int drop_pos = -1;
switch (dropIndicatorPosition()) {
case QAbstractItemView::OnItem:
return; // Don't draw anything
case QAbstractItemView::AboveItem:
drop_pos = visualRect(drop_index).top();
break;
case QAbstractItemView::BelowItem:
drop_pos = visualRect(drop_index).bottom() + 1;
break;
case QAbstractItemView::OnViewport:
if (model()->rowCount() == 0)
drop_pos = 1;
else
drop_pos = 1 + visualRect(model()->index(model()->rowCount() - 1,
first_column)).bottom();
break;
}
// Draw a nice gradient first
QColor line_color(QApplication::palette().color(QPalette::Highlight));
QColor shadow_color(line_color.lighter(140));
QColor shadow_fadeout_color(shadow_color);
shadow_color.setAlpha(255);
shadow_fadeout_color.setAlpha(0);
QLinearGradient gradient(QPoint(0, drop_pos - kDropIndicatorGradientWidth),
QPoint(0, drop_pos + kDropIndicatorGradientWidth));
gradient.setColorAt(0.0, shadow_fadeout_color);
gradient.setColorAt(0.5, shadow_color);
gradient.setColorAt(1.0, shadow_fadeout_color);
QPen gradient_pen(QBrush(gradient), kDropIndicatorGradientWidth * 2);
p.setPen(gradient_pen);
p.drawLine(QPoint(0, drop_pos), QPoint(width(), drop_pos));
// Now draw the line on top
QPen line_pen(line_color, kDropIndicatorWidth);
p.setPen(line_pen);
p.drawLine(QPoint(0, drop_pos), QPoint(width(), drop_pos));
}