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oak-editor/app/widget/timelinewidget/view/timelineview.cpp
T
Mike-Solar b77344b506 app: PlaybackController + playhead subscription migration (issues 0c, 1-4) 
New app/playback/playbackcontroller.{h,cpp}: a lazily created
process-wide singleton whose set_playhead() forwards to
oakengine_viewer_set_playhead and re-broadcasts playhead_changed as a
plain Qt signal. Every app-side oakengine_viewer_set_playhead call site
(17 across viewer, timelinewidget, timelineview, import tool,
timebasedwidget, keyframecontrol, export dialog, mainwindow) now goes
through it.

Migrate the first four playhead subscribers off the raw C event
subscription / EngineEventBridge to the controller signal:
- TimeBasedView (issue 1)
- NodeParamViewWidgetBridge (issue 2)
- NodeParamViewKeyframeControl (issue 3)
- NodeParamViewConnectedLabel (issue 4)

Each stores a QMetaObject::Connection filtered on its viewer node and
disconnects on teardown; the viewer_sub_ members are gone. Plan docs
mark issues 0c and 1-4 as done.

Closes #30, closes #31, closes #32, closes #51, closes #52.
2026-08-05 00:01:12 +08:00

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/***
Olive - Non-Linear Video Editor
Copyright (C) 2022 Olive Team
Modifications Copyright (C) 2025 mikesolar
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
***/
#include "timelineview.h"
#include <QByteArray>
#include <QDebug>
#include <QMimeData>
#include <QMouseEvent>
#include <QScrollBar>
#include <QtMath>
#include <QPen>
#include "common/configwrapper.h"
#include "oakutil/qtutils.h"
#include "../../timeruler/markerpainting.h"
#include "oakengine/preview.h"
#include "oakengine/timeline.h"
#include "oakengine/viewer.h"
#include "playback/playbackcontroller.h"
#include "panel/panelmanager.h"
#include "panel/timeline/timeline.h"
#include "widget/timelinewidget/cliphandle.h"
#include "widget/timelinewidget/trackhandle.h"
#include "common/colorcodingapp.h"
#include "widget/timelinewidget/timelinewidget.h"
#include "widget/viewer/vieweroutpututils.h"
namespace olive
{
#define super TimeBasedView
namespace
{
/// Number of tracks of `type` in `seq` (TrackList::get_track_count()).
int track_count_of(OakEngineSequence *seq, int type)
{
if (!seq || type < 0 || type >= 3) {
return 0;
}
int counts[3] = { 0, 0, 0 };
oakengine_sequence_track_count(seq, &counts[0], &counts[1], &counts[2]);
return counts[type];
}
/// Borrowed track at (type, index) as an opaque track handle.
OakEngineTrack *track_at(OakEngineSequence *seq, int type, int index)
{
return oakengine_sequence_track_at(seq, type, index);
}
/// All tracks of `type` through the C ABI (count + indexed access).
QVector<OakEngineTrack *> track_list_tracks(OakEngineSequence *seq, int type)
{
QVector<OakEngineTrack *> tracks;
const int n = track_count_of(seq, type);
tracks.reserve(n);
for (int i = 0; i < n; i++) {
if (OakEngineTrack *t = track_at(seq, type, i)) {
tracks.append(t);
}
}
return tracks;
}
/// Track::get_track_height_in_pixels() through the C ABI.
int track_height_in_pixels(OakEngineSequence *seq, int type, int index)
{
double h = 0;
if (!seq ||
oakengine_track_get_height(seq, type, index, &h) != OAKENGINE_OK) {
return oakengine_track_default_height_in_pixels();
}
return oakengine_track_height_internal_to_pixels(h);
}
/// The track's blocks through the C ABI (count + indexed access).
QVector<OakEngineBlock *> track_all_blocks(OakEngineTrack *track)
{
QVector<OakEngineBlock *> blocks;
OakEngineTrack *h = trackhandle(track);
const int n = oakengine_track_block_count(h);
blocks.reserve(n);
for (int i = 0; i < n; i++) {
if (OakEngineBlock *b = oakengine_track_block_at(h, i)) {
blocks.append(b);
}
}
return blocks;
}
/// Clip-style predicate for block handles (replaces a dynamic_cast to the
/// engine clip class now that its definition is no longer visible here).
OakEngineBlock *block_as_clip(OakEngineBlock *block)
{
return (block &&
oakengine_node_is_clip(reinterpret_cast<OakEngineNode *>(block)))
? block
: nullptr;
}
/// The block's in-point as rational seconds.
Rational block_time_in(OakEngineBlock *block)
{
int num = 0, den = 1;
oakengine_block_get_in_rational(
reinterpret_cast<const OakEngineNode *>(block), &num, &den);
return Rational(num, den);
}
/// The block's out-point as rational seconds.
Rational block_time_out(OakEngineBlock *block)
{
int num = 0, den = 1;
oakengine_block_get_out_rational(
reinterpret_cast<const OakEngineNode *>(block), &num, &den);
return Rational(num, den);
}
/// The block's length as rational seconds.
Rational block_length(OakEngineBlock *block)
{
int num = 0, den = 1;
oakengine_block_get_length_rational(
reinterpret_cast<const OakEngineNode *>(block), &num, &den);
return Rational(num, den);
}
/// Next block on the track (borrowed handle, may be null).
OakEngineBlock *block_next(OakEngineBlock *block)
{
return oakengine_block_next(block);
}
/// The block's enabled flag through the C ABI.
bool block_is_enabled(OakEngineBlock *block)
{
return oakengine_block_is_enabled(block) != 0;
}
/// The block's effective color through the C ABI (color label -> app
/// ColorCoding).
core::Color block_color(OakEngineBlock *block)
{
return AppColorCoding::get_color(oakengine_node_get_effective_color_label(
reinterpret_cast<const OakEngineNode *>(block)));
}
/// Brush for a block, app-side (gradient or flat, mirroring the engine
/// version).
QBrush block_brush(OakEngineBlock *block, qreal top, qreal bottom)
{
const QColor c = QtUtils::to_q_color(block_color(block));
if (OAK_CONFIG("UseGradients").toBool()) {
QLinearGradient grad;
grad.setStart(0, top);
grad.setFinalStop(0, bottom);
grad.setColorAt(0.0, c.lighter());
grad.setColorAt(1.0, c);
return grad;
}
return c;
}
/// The block's link presence through the C ABI.
bool block_has_links(OakEngineBlock *block)
{
return oakengine_block_link_count(block) > 0;
}
/// The block's label-or-name through the C ABI.
QString block_label_or_name(OakEngineBlock *block)
{
char buf[1024];
buf[0] = '\0';
oakengine_node_get_label_and_name(
reinterpret_cast<const OakEngineNode *>(block), buf, sizeof(buf));
return QString::fromUtf8(buf);
}
/// The clip's connected viewer as an OakEngineNode handle (borrowed).
OakEngineNode *clip_connected_viewer(OakEngineBlock *clip)
{
return oakengine_clip_get_connected_viewer(clip);
}
/// The clip's track type through the C ABI (track of the clip).
int clip_track_type(OakEngineBlock *clip)
{
return oakengine_track_type(reinterpret_cast<OakEngineTrack *>(
oakengine_clip_get_track(reinterpret_cast<OakEngineNode *>(clip))));
}
/// The viewer's length as rational seconds.
Rational viewer_length(OakEngineNode *viewer)
{
int64_t num = 0, den = 1;
oakengine_viewer_get_length(viewer, &num, &den);
return Rational(int(num), int(den));
}
/// Marker time range as rational seconds (oakengine_marker_get_time).
TimeRange marker_time_range(const OakEngineMarker *marker)
{
int64_t in_num = 0, in_den = 1, out_num = 0, out_den = 1;
oakengine_marker_get_time(marker, &in_num, &in_den, &out_num, &out_den);
return TimeRange(Rational(int(in_num), int(in_den)),
Rational(int(out_num), int(out_den)));
}
/// Marker name through the C ABI.
QString marker_name_of(const OakEngineMarker *marker)
{
const int size = oakengine_marker_get_name(marker, nullptr, 0);
QByteArray buf(size + 1, '\0');
oakengine_marker_get_name(marker, buf.data(), int(buf.size()));
return QString::fromUtf8(buf.constData());
}
} // namespace
TimelineView::TimelineView(Qt::Alignment vertical_alignment, QWidget *parent)
: super(parent)
, selections_(nullptr)
, ghosts_(nullptr)
, show_beam_cursor_(false)
, connected_sequence_(nullptr)
, connected_track_type_(-1)
, transition_overlay_out_(nullptr)
, transition_overlay_in_(nullptr)
{
Q_ASSERT(vertical_alignment == Qt::AlignTop ||
vertical_alignment == Qt::AlignBottom);
setAlignment(Qt::AlignLeft | vertical_alignment);
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
setBackgroundRole(QPalette::Window);
setContextMenuPolicy(Qt::CustomContextMenu);
viewport()->setMouseTracking(true);
set_is_timeline_axes(true);
}
void TimelineView::mousePressEvent(QMouseEvent *event)
{
// If we click on marker, jump to that point in the timeline
QPointF scene_pos = mapToScene(event->position().toPoint());
for (auto it = clip_marker_rects_.cbegin(); it != clip_marker_rects_.cend();
it++) {
if (it.value().contains(scene_pos)) {
const Rational marker_in = marker_time_range(it.key()).in();
PlaybackController::instance()->set_playhead(get_viewer_node(),
marker_in.numerator(),
marker_in.denominator());
break;
}
}
TimelineViewMouseEvent timeline_event = CreateMouseEvent(event);
if (hand_press(event) ||
(!get_item_at_scene_pos(timeline_event.get_frame(),
timeline_event.get_track().index()) &&
Core::instance()->tool() != Tool::k_add && playhead_press(event))) {
// Let the parent handle this
return;
}
if (dragMode() != get_default_drag_mode()) {
// Use default behavior when hand dragging for instance
super::mousePressEvent(event);
return;
}
emit mouse_pressed(&timeline_event);
}
void TimelineView::mouseMoveEvent(QMouseEvent *event)
{
TimelineViewMouseEvent timeline_event = CreateMouseEvent(event);
if (hand_move(event) || playhead_move(event)) {
// Let the parent handle this
return;
}
if (dragMode() != get_default_drag_mode()) {
super::mouseMoveEvent(event);
return;
}
if (event->buttons() == Qt::NoButton) {
OakEngineBlock *b = get_item_at_scene_pos(
timeline_event.get_frame(), timeline_event.get_track().index());
if (b) {
setToolTip(
tr("In: %1\nOut: %2\nDuration: %3")
.arg(QString::fromStdString(Timecode::time_to_timecode(
block_time_in(b), timebase(),
Core::instance()->get_timecode_display())),
QString::fromStdString(Timecode::time_to_timecode(
block_time_out(b), timebase(),
Core::instance()->get_timecode_display())),
QString::fromStdString(Timecode::time_to_timecode(
block_length(b), timebase(),
Core::instance()->get_timecode_display()))));
} else {
setToolTip(QString());
}
}
emit mouse_moved(&timeline_event);
}
void TimelineView::mouseReleaseEvent(QMouseEvent *event)
{
if (hand_release(event) || playhead_release(event)) {
// Let the parent handle this
return;
}
if (dragMode() != get_default_drag_mode()) {
super::mouseReleaseEvent(event);
return;
}
TimelineViewMouseEvent timeline_event = CreateMouseEvent(event);
emit mouse_released(&timeline_event);
}
void TimelineView::mouseDoubleClickEvent(QMouseEvent *event)
{
TimelineViewMouseEvent timeline_event = CreateMouseEvent(event);
emit mouse_double_clicked(&timeline_event);
}
void TimelineView::dragEnterEvent(QDragEnterEvent *event)
{
TimelineViewMouseEvent timeline_event = CreateMouseEvent(
event->position().toPoint(), Qt::NoButton, event->modifiers());
timeline_event.set_mime_data(event->mimeData());
timeline_event.SetEvent(event);
emit drag_entered(&timeline_event);
}
void TimelineView::dragMoveEvent(QDragMoveEvent *event)
{
TimelineViewMouseEvent timeline_event = CreateMouseEvent(
event->position().toPoint(), Qt::NoButton, event->modifiers());
timeline_event.set_mime_data(event->mimeData());
timeline_event.SetEvent(event);
emit drag_moved(&timeline_event);
}
void TimelineView::dragLeaveEvent(QDragLeaveEvent *event)
{
emit drag_left(event);
}
void TimelineView::dropEvent(QDropEvent *event)
{
TimelineViewMouseEvent timeline_event = CreateMouseEvent(
event->position().toPoint(), Qt::NoButton, event->modifiers());
timeline_event.set_mime_data(event->mimeData());
timeline_event.SetEvent(event);
emit drag_dropped(&timeline_event);
}
void TimelineView::drawBackground(QPainter *painter, const QRectF &rect)
{
if (!connected_sequence_) {
return;
}
painter->setPen(palette().base().color());
int line_y = 0;
const int track_count = track_count_of(connected_sequence_,
connected_track_type_);
for (int i = 0; i < track_count; i++) {
line_y += track_height_in_pixels(connected_sequence_,
connected_track_type_, i);
// One px gap between tracks
line_y++;
int this_line_y;
if (alignment() & Qt::AlignTop) {
this_line_y = line_y;
} else {
this_line_y = -line_y;
}
painter->drawLine(qRound(rect.left()), this_line_y,
qRound(rect.right()), this_line_y);
}
}
void TimelineView::drawForeground(QPainter *painter, const QRectF &rect)
{
if (!connected_sequence_) {
return;
}
// Draw block backgrounds
draw_blocks(painter, false);
// Draw selections
if (selections_ && !selections_->isEmpty()) {
painter->setPen(Qt::NoPen);
painter->setBrush(QColor(0, 0, 0, 64));
for (auto it = selections_->cbegin(); it != selections_->cend(); it++) {
// TrackReference mirror ordinals == engine Track::Type ordinals
// (static_assert-pinned in trackreferencehandle.h)
if (it.key().type() ==
static_cast<TrackReference::Type>(connected_track_type_)) {
int track_index = it.key().index();
for (const TimeRange &range : it.value()) {
painter->drawRect(time_to_scene(range.in()),
get_track_y(track_index),
time_to_scene(range.length()),
get_track_height(track_index));
}
}
}
}
// Draw block foregrounds
draw_blocks(painter, true);
// Draw ghosts
if (ghosts_ && !ghosts_->isEmpty()) {
foreach (TimelineViewGhostItem *ghost, (*ghosts_)) {
if (ghost->get_track().type() ==
static_cast<TrackReference::Type>(connected_track_type_) &&
!ghost->is_invisible()) {
int track_index = ghost->get_adjusted_track().index();
OakEngineBlock *attached = QtUtils::value_to_ptr<OakEngineBlock>(
ghost->get_data(TimelineViewGhostItem::k_attached_block));
if (attached &&
OAK_CONFIG("ShowClipWhileDragging").toBool()) {
int adj_track = ghost->get_adjusted_track().index();
qreal track_top = get_track_y(adj_track);
qreal track_height = get_track_height(adj_track);
qreal old_opacity = painter->opacity();
painter->setOpacity(0.5);
Rational in = ghost->get_adjusted_in(),
out = ghost->get_adjusted_out(),
media_in = ghost->get_adjusted_media_in();
draw_block(painter, false, attached, track_top, track_height,
in, out, media_in);
draw_block(painter, true, attached, track_top, track_height,
in, out, media_in);
painter->setOpacity(old_opacity);
}
painter->setPen(QPen(Qt::yellow, 2));
painter->setBrush(Qt::NoBrush);
painter->drawRect(time_to_scene(ghost->get_adjusted_in()),
get_track_y(track_index),
time_to_scene(ghost->get_adjusted_length()),
get_track_height(track_index));
}
}
}
// Draw beam cursor
if (show_beam_cursor_ &&
cursor_coord_.get_track().type() ==
static_cast<TrackReference::Type>(connected_track_type_)) {
painter->setPen(Qt::gray);
double cursor_x = time_to_scene(cursor_coord_.get_frame());
int track_index = cursor_coord_.get_track().index();
int track_y = get_track_y(track_index);
painter->drawLine(cursor_x, track_y, cursor_x,
track_y + get_track_height(track_index));
}
// Draw recording overlay
if (recording_overlay_ &&
recording_coord_.get_track().type() ==
static_cast<TrackReference::Type>(connected_track_type_)) {
painter->setPen(QPen(Qt::red, 2));
painter->setBrush(QColor(255, 128, 128));
int x = time_to_scene(recording_coord_.get_frame());
int64_t ph_num = 0, ph_den = 1;
oakengine_viewer_get_playhead(get_viewer_node(), &ph_num,
&ph_den);
painter->drawRect(x, get_track_y(recording_coord_.get_track().index()),
time_to_scene(Rational(int(ph_num), int(ph_den))) - x,
get_track_height(recording_coord_.get_track().index()));
}
// Draw standard TimelineViewBase things (such as playhead)
super::drawForeground(painter, rect);
}
void TimelineView::ToolChangedEvent(Tool::Item tool)
{
switch (tool) {
case Tool::k_razor:
setCursor(Qt::SplitHCursor);
break;
case Tool::k_edit:
setCursor(Qt::IBeamCursor);
break;
case Tool::k_add:
case Tool::k_transition:
case Tool::k_zoom:
case Tool::k_record:
setCursor(Qt::CrossCursor);
break;
case Tool::k_track_select:
setCursor(Qt::SizeHorCursor); // FIXME: Not the ideal cursor
break;
default:
unsetCursor();
}
// Hide/show cursor if necessary
if (show_beam_cursor_) {
show_beam_cursor_ = false;
viewport()->update();
}
}
void TimelineView::SceneRectUpdateEvent(QRectF &rect)
{
if (alignment() & Qt::AlignTop) {
rect.setTop(0);
rect.setBottom(get_height_of_all_tracks() + height() / 2);
} else if (alignment() & Qt::AlignBottom) {
rect.setBottom(0);
rect.setTop(get_height_of_all_tracks() - height() / 2);
}
}
TrackReference::Type TimelineView::connected_track_type() const
{
return static_cast<TrackReference::Type>(connected_track_type_);
}
TimelineCoordinate TimelineView::screen_to_coordinate(const QPoint &pt)
{
return scene_to_coordinate(mapToScene(pt));
}
TimelineCoordinate TimelineView::scene_to_coordinate(const QPointF &pt)
{
return TimelineCoordinate(scene_to_time(pt.x()),
TrackReference(connected_track_type(),
scene_to_track(pt.y())));
}
TimelineViewMouseEvent TimelineView::CreateMouseEvent(QMouseEvent *event)
{
return CreateMouseEvent(event->position().toPoint(), event->button(), event->modifiers());
}
TimelineViewMouseEvent
TimelineView::CreateMouseEvent(const QPoint &pos, Qt::MouseButton button,
Qt::KeyboardModifiers modifiers)
{
QPointF scene_pt = mapToScene(pos);
return TimelineViewMouseEvent(scene_pt, pos, get_scale(), timebase(),
TrackReference(connected_track_type(),
scene_to_track(scene_pt.y())),
button, modifiers);
}
void TimelineView::draw_blocks(QPainter *painter, bool foreground)
{
Rational start_time = scene_to_time(get_timeline_left_bound());
Rational end_time = scene_to_time(get_timeline_right_bound());
const int64_t start_ts = core::Timecode::time_to_timestamp(
start_time, sequence_timebase(connected_sequence_));
foreach (OakEngineTrack *track,
track_list_tracks(connected_sequence_, connected_track_type_)) {
// Get first visible block in this track
OakEngineBlock *block = oakengine_track_nearest_block_before_or_at(
trackhandle(track), start_ts);
const int track_index = track_index_of(track);
qreal track_top = get_track_y(track_index);
qreal track_height = get_track_height(track_index);
while (block) {
draw_block(painter, foreground, block, track_top, track_height);
if (block_time_out(block) >= end_time) {
// Rest of the clips are offscreen, can break loop now
break;
}
block = block_next(block);
}
}
}
void TimelineView::draw_block(QPainter *painter, bool foreground,
OakEngineBlock *block, qreal block_top,
qreal block_height)
{
Rational media_in = 0;
if (OakEngineBlock *cb = block_as_clip(block)) {
int64_t in_num, in_den;
if (oakengine_clip_get_media_range_rational(
cliphandle(cb), &in_num, &in_den,
nullptr, nullptr) == OAKENGINE_OK) {
media_in = Rational(in_num, in_den);
}
}
draw_block(painter, foreground, block, block_top, block_height,
block_time_in(block), block_time_out(block), media_in);
}
void TimelineView::draw_block(QPainter *painter, bool foreground,
OakEngineBlock *block, qreal block_top,
qreal block_height, const Rational &in,
const Rational &out, const Rational &media_in)
{
if (block_as_clip(block) ||
oakengine_node_is_transition(reinterpret_cast<OakEngineNode *>(block))) {
qreal block_in = time_to_scene(in);
qreal block_left = qMax(get_timeline_left_bound(), block_in);
qreal block_right = qMin(get_timeline_right_bound(), time_to_scene(out)) - 1;
QRectF r(block_left, block_top, block_right - block_left, block_height);
QColor shadow_color = block_is_enabled(block) ?
QtUtils::to_q_color(block_color(block)).darker() :
QColor(Qt::darkGray).darker();
const qreal minimum_rect_width = 2;
const qreal minimum_detail_width = 8;
if (r.width() <= minimum_rect_width) {
if (!foreground) {
// Just draw a green background
// Width is likely fractional, so we ceil it and add 1 to ensure the entire width of the
// rect is painted
r.setWidth(std::ceil(r.width()) + 1);
painter->fillRect(r, shadow_color);
}
} else {
QFontMetrics fm = fontMetrics();
int text_height = fm.height();
int text_padding =
text_height /
4; // This ties into the track minimum height being 1.5
int text_total_height = text_height + text_padding + text_padding;
if (foreground) {
painter->setBrush(Qt::NoBrush);
if (r.width() > minimum_detail_width) {
QString using_label = block_label_or_name(block);
QRectF text_rect = r.adjusted(text_padding, text_padding,
-text_padding, -text_padding);
painter->setPen(
block_is_enabled(block) ?
AppColorCoding::get_ui_selector_color(block_color(block)) :
Qt::lightGray);
painter->drawText(text_rect, Qt::AlignLeft | Qt::AlignTop,
using_label);
if (block_has_links(block)) {
int text_width =
qMin(qRound(text_rect.width()),
QtUtils::q_font_metrics_width(fm, using_label));
int underline_y = text_rect.y() + text_height;
painter->drawLine(text_rect.x(), underline_y,
text_width + text_rect.x(),
underline_y);
}
}
qreal line_bottom = block_top + block_height - 1;
painter->setPen(Qt::white);
painter->drawLine(block_left, block_top, block_right,
block_top);
painter->drawLine(block_left, block_top, block_left,
line_bottom);
painter->setPen(shadow_color);
painter->drawLine(block_left, line_bottom, block_right,
line_bottom);
painter->drawLine(block_right, line_bottom, block_right,
block_top);
} else {
painter->setPen(Qt::NoPen);
painter->setBrush(
block_is_enabled(block) ?
block_brush(block, block_top, block_top + block_height) :
Qt::gray);
painter->drawRect(r);
if (r.width() > minimum_detail_width) {
if (OakEngineBlock *clip = block_as_clip(block)) {
QRect preview_rect = r.toRect();
// Draw clip thumbnails
if (clip_track_type(clip) == TrackReference::k_video &&
OAK_CONFIG("TimelineThumbnailMode").toInt() !=
TimelineApp::k_thumbnail_off) {
// Start thumbnails underneath clip name
preview_rect.adjust(0, text_total_height, 0, 0);
if (preview_rect.height() > r.height() / 3) {
if (const FrameHashCache *thumbs =
clip_thumbnails(clip)) {
QRect thumb_rect;
painter->setRenderHint(
QPainter::SmoothPixmapTransform);
painter->setClipRect(preview_rect);
if (OAK_CONFIG("TimelineThumbnailMode") ==
TimelineApp::k_thumbnail_on) {
OakEngineNode *s = oakengine_track_get_sequence(
oakengine_clip_get_track(
reinterpret_cast<OakEngineNode *>(clip)));
int width = viewer_output_video_params(s).width();
int height =
viewer_output_video_params(s).height();
int start;
if (height >
0) { // Prevent divide by zero/invalid params
double scale =
double(preview_rect.height()) /
double(height);
thumb_rect.setWidth(width * scale);
start = (((preview_rect.left() -
int(qFloor(block_in))) /
thumb_rect.width()) *
thumb_rect.width()) +
qFloor(block_in);
} else {
start = preview_rect.left();
}
for (int i = start;
i < preview_rect.right();
i += thumb_rect.width() + 1) {
Rational time_here =
scene_to_time(
i - block_in, get_scale(),
viewer_output_video_params(
connected_sequence_)
.frame_rate_as_time_base()) +
media_in;
draw_thumbnail(painter, thumbs,
time_here, i,
preview_rect,
&thumb_rect);
}
} else {
Rational time =
clip_media_range(clip).in();
time = Timecode::snap_time_to_timebase(
time, thumbs->get_timebase(),
Timecode::k_floor);
draw_thumbnail(painter, thumbs, time,
block_left, preview_rect,
&thumb_rect);
}
painter->setClipping(false);
}
}
}
// Draw waveform
if (clip_track_type(clip) == TrackReference::k_audio &&
OAK_CONFIG("TimelineWaveformMode").toInt() ==
TimelineApp::k_waveforms_enabled) {
if (const AudioWaveformCache *wave =
clip_waveform(clip)) {
Rational waveform_start =
scene_to_time(
block_left - block_in, get_scale(),
viewer_output_audio_params(
connected_sequence_)
.sample_rate_as_time_base()) +
media_in;
painter->setPen(shadow_color);
wave->Draw(painter, preview_rect,
this->get_scale(), waveform_start);
}
}
// Draw zebra stripes and markers
OakEngineNode *connected_viewer =
clip_connected_viewer(clip);
if (connected_viewer) {
const Rational connected_length =
viewer_length(connected_viewer);
if (!connected_length.isNull()) {
painter->setPen(shadow_color);
if (clip_media_in(clip) < 0) {
qreal zebra_right = time_to_scene(
block_time_in(block) -
clip_media_in(clip));
switch (clip_loop_mode(clip)) {
case OAKENGINE_LOOP_MODE_OFF:
// Draw stripes for sections of clip < 0
if (zebra_right >
get_timeline_left_bound()) {
draw_zebra_stripes(
painter,
QRectF(block_left, block_top,
zebra_right - block_left,
block_height));
}
break;
case OAKENGINE_LOOP_MODE_LOOP:
for (qreal i = zebra_right;
i > block_left;
i -= time_to_scene(
connected_length)) {
painter->drawLine(i, block_top, i,
block_top +
block_height);
}
break;
case OAKENGINE_LOOP_MODE_CLAMP:
painter->drawLine(
zebra_right, block_top, zebra_right,
block_top + block_height);
break;
}
}
if (block_length(block) + clip_media_in(clip) >
connected_length) {
qreal zebra_left = time_to_scene(
block_time_out(block) -
(clip_media_in(clip) +
block_length(block) -
connected_length));
switch (clip_loop_mode(clip)) {
case OAKENGINE_LOOP_MODE_OFF:
// Draw stripes for sections for clip > clip length
if (zebra_left <
get_timeline_right_bound()) {
draw_zebra_stripes(
painter,
QRectF(zebra_left, block_top,
block_right - zebra_left,
block_height));
}
break;
case OAKENGINE_LOOP_MODE_LOOP:
for (qreal i = zebra_left;
i < block_right;
i += time_to_scene(
connected_length)) {
painter->drawLine(i, block_top, i,
block_top +
block_height);
}
break;
case OAKENGINE_LOOP_MODE_CLAMP:
painter->drawLine(
zebra_left, block_top, zebra_left,
block_top + block_height);
break;
}
}
}
OakEngineMarkerList *marker_list =
oakengine_viewer_get_marker_list(
connected_viewer);
const int marker_count =
oakengine_marker_list_count(marker_list);
if (marker_count > 0) {
clip_marker_rects_.clear();
for (int mi = 0; mi < marker_count; mi++) {
OakEngineMarker *marker =
oakengine_marker_list_at(marker_list,
mi);
const TimeRange marker_range =
marker_time_range(marker);
// Make sure marker is within In/Out points of the clip
if (marker_range.in() >=
clip_media_in(clip) &&
marker_range.out() <=
clip_media_in(clip) +
block_length(block)) {
QPoint marker_pt(
time_to_scene(
block_time_in(block) -
clip_media_in(clip) +
marker_range.in()),
block_top + block_height);
painter->setClipRect(r);
QRect marker_rect =
MarkerPainting::draw(
painter, marker_pt, -1,
get_scale(), false,
marker_name_of(marker),
oakengine_marker_get_color(
marker),
marker_range.in(),
marker_range.out());
clip_marker_rects_.insert(marker,
marker_rect);
painter->setClipping(false);
}
}
}
}
if (const FrameHashCache *cache =
clip_connected_video_cache(clip)) {
if (cache->has_validated_ranges()) {
QRect cache_rect =
r.adjusted(
0,
r.height() -
oakengine_playback_cache_indicator_height(),
0, 0)
.toRect();
cache->draw(painter, clip_media_in(clip),
get_scale(), cache_rect);
}
}
}
// For transitions, show lines representing a transition
if (oakengine_node_is_transition(
reinterpret_cast<OakEngineNode *>(block))) {
QVector<QLineF> lines;
OakEngineBlock *tb = block;
if (oakengine_transition_connected_in_block(tb)) {
lines.append(QLineF(r.bottomLeft(), r.topRight()));
}
if (oakengine_transition_connected_out_block(tb)) {
lines.append(QLineF(r.topLeft(), r.bottomRight()));
}
painter->setPen(shadow_color);
painter->drawLines(lines);
}
OakEngineBlock *overlay_out = transition_overlay_out_;
OakEngineBlock *overlay_in = transition_overlay_in_;
if (overlay_out == block || overlay_in == block) {
QRectF transition_overlay_rect = r;
qreal transition_overlay_width =
time_to_scene(block_length(block)) * 0.5;
if (overlay_out && overlay_in) {
// This is a dual transition, use the smallest width
OakEngineBlock *other_block =
(overlay_out == block) ? overlay_in : overlay_out;
qreal other_width =
time_to_scene(block_length(other_block)) * 0.5;
transition_overlay_width =
qMin(transition_overlay_width, other_width);
}
if (overlay_out == block) {
transition_overlay_rect.setLeft(
transition_overlay_rect.right() -
transition_overlay_width);
} else {
transition_overlay_rect.setRight(
transition_overlay_rect.left() +
transition_overlay_width);
}
painter->setPen(Qt::NoPen);
painter->setBrush(QColor(0, 0, 0, 64));
painter->drawRect(transition_overlay_rect);
}
}
}
}
}
}
void TimelineView::draw_zebra_stripes(QPainter *painter, const QRectF &r)
{
int zebra_interval = fontMetrics().height();
painter->setPen(QPen(QColor(0, 0, 0, 128), zebra_interval / 4));
painter->setBrush(Qt::NoBrush);
QVector<QLineF> lines;
lines.reserve(qCeil(r.width() / zebra_interval));
qreal left = r.left() - r.height();
qreal right = r.right() + r.height();
for (qreal i = left; i < right; i += zebra_interval) {
lines.append(QLineF(i, r.top(), i - r.height(), r.bottom()));
}
painter->setClipRect(r);
painter->drawLines(lines);
painter->setClipping(false);
}
int TimelineView::get_height_of_all_tracks() const
{
if (connected_sequence_) {
const int count =
track_count_of(connected_sequence_, connected_track_type_);
if (alignment() & Qt::AlignTop) {
return get_track_y(count);
} else {
return get_track_y(count - 1);
}
} else {
return 0;
}
}
qreal TimelineView::get_timeline_left_bound() const
{
return horizontalScrollBar()->value();
}
qreal TimelineView::get_timeline_right_bound() const
{
return get_timeline_left_bound() + viewport()->width();
}
void TimelineView::draw_thumbnail(QPainter *painter,
const FrameHashCache *thumbs,
const Rational &time, int x,
const QRect &preview_rect,
QRect *thumb_rect) const
{
QString thumbnail = thumbs->get_valid_cache_filename(time);
if (!thumbnail.isEmpty()) {
QImage img;
if (img.load(thumbnail, "jpg")) {
double scale = double(preview_rect.height()) / double(img.height());
*thumb_rect = QRect(x, preview_rect.top(), img.width() * scale,
preview_rect.height());
painter->drawImage(*thumb_rect, img);
}
}
}
int TimelineView::get_track_y(int track_index) const
{
if (!connected_sequence_ ||
!track_count_of(connected_sequence_, connected_track_type_)) {
return 0;
}
int y = 0;
if (alignment() & Qt::AlignBottom) {
track_index++;
}
for (int i = 0; i < track_index; i++) {
y += get_track_height(i);
// One px line between each track
y++;
}
if (alignment() & Qt::AlignBottom) {
y = -y + 1;
}
return y;
}
int TimelineView::get_track_height(int track_index) const
{
const int count = track_count_of(connected_sequence_, connected_track_type_);
if (!connected_sequence_ || count == 0) {
// Handle null or empty track list
return oakengine_track_default_height_in_pixels();
}
if (track_index >= count) {
// Handle new track at the end of the list
return track_height_in_pixels(connected_sequence_,
connected_track_type_, count - 1);
}
if (track_index < 0) {
// Handle new track at the beginning of the list
return track_height_in_pixels(connected_sequence_,
connected_track_type_, 0);
}
// The track definitely exists, return its actual height
return track_height_in_pixels(connected_sequence_, connected_track_type_,
track_index);
}
QPoint TimelineView::get_scroll_coordinates() const
{
return QPoint(horizontalScrollBar()->value(), verticalScrollBar()->value());
}
void TimelineView::set_scroll_coordinates(const QPoint &pt)
{
horizontalScrollBar()->setValue(pt.x());
verticalScrollBar()->setValue(pt.y());
}
void TimelineView::connect_track_list(OakEngineSequence *sequence,
int track_type)
{
connected_sequence_ = sequence;
connected_track_type_ = track_type;
}
void TimelineView::set_beam_cursor(const TimelineCoordinate &coord)
{
if (!connected_sequence_) {
return;
}
bool update_required =
coord.get_track().type() ==
static_cast<TrackReference::Type>(connected_track_type_) ||
cursor_coord_.get_track().type() ==
static_cast<TrackReference::Type>(connected_track_type_);
show_beam_cursor_ = true;
cursor_coord_ = coord;
if (update_required) {
viewport()->update();
}
}
void TimelineView::set_transition_overlay(OakEngineBlock *out,
OakEngineBlock *in)
{
if (transition_overlay_out_ != out || transition_overlay_in_ != in) {
int type = -1;
if (out) {
type = clip_track_type(out);
} else if (in) {
type = clip_track_type(in);
}
if (type == connected_track_type_) {
transition_overlay_out_ = out;
transition_overlay_in_ = in;
} else {
transition_overlay_out_ = nullptr;
transition_overlay_in_ = nullptr;
}
viewport()->update();
}
}
void TimelineView::enable_recording_overlay(const TimelineCoordinate &coord)
{
recording_overlay_ = true;
recording_coord_ = coord;
viewport()->update();
}
void TimelineView::disable_recording_overlay()
{
recording_overlay_ = false;
viewport()->update();
}
int TimelineView::scene_to_track(double y)
{
int track = -1;
int heights = 0;
if (alignment() & Qt::AlignBottom) {
y = -y;
}
do {
track++;
heights += get_track_height(track);
} while (y > heights);
return track;
}
OakEngineBlock *TimelineView::get_item_at_scene_pos(const Rational &time,
int track_index) const
{
if (connected_sequence_) {
OakEngineTrack *track = track_at(connected_sequence_,
connected_track_type_, track_index);
if (track) {
foreach (OakEngineBlock *b, track_all_blocks(track)) {
if (block_time_in(b) <= time && block_time_out(b) > time) {
return b;
}
}
}
}
return nullptr;
}
QVector<OakEngineBlock *> TimelineView::get_items_at_scene_rect(
const QRectF &rect) const
{
QVector<OakEngineBlock *> list;
if (connected_sequence_) {
Rational start = this->scene_to_time(rect.left());
Rational end = this->scene_to_time(rect.right());
const int64_t start_ts = core::Timecode::time_to_timestamp(
start, sequence_timebase(connected_sequence_));
const int count =
track_count_of(connected_sequence_, connected_track_type_);
for (int i = 0; i < count; i++) {
OakEngineTrack *track = track_at(connected_sequence_,
connected_track_type_, i);
int track_top = get_track_y(i);
int track_bottom = track_top + get_track_height(i);
if (track) {
if (!(track_bottom < rect.top() || track_top > rect.bottom())) {
OakEngineBlock *b =
oakengine_track_nearest_block_before_or_at(
trackhandle(track), start_ts);
while (b && block_time_in(b) < end) {
list.append(b);
b = block_next(b);
}
}
}
}
}
return list;
}
void TimelineView::track_list_changed()
{
update_scene_rect();
viewport()->update();
}
}
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