348 lines
13 KiB
C++
348 lines
13 KiB
C++
#include "Document/BrushStroke.h"
|
||
#include "Document/EditorSession.h"
|
||
#include "Document/PixelAdjust.h"
|
||
#include "Document/PixelInvert.h"
|
||
#include "IO/ImageExporter.h"
|
||
#include "Logging.h"
|
||
#include <QtConcurrent>
|
||
#include <cmath>
|
||
|
||
namespace {
|
||
// A uniform 1×1 mask given the layer's pixel grid.
|
||
QImage expandedUniformMask(const QImage &image, int width, int height)
|
||
{
|
||
if (width <= 0 || height <= 0 || qint64(width) * height > 100'000'000)
|
||
throw ProjectError(ProjectError::Kind::tooLarge);
|
||
QImage expanded = BrushRaster::context(width, height, true);
|
||
QPainter painter(&expanded);
|
||
BrushRaster::draw(image, QRectF(0, 0, width, height), painter);
|
||
return expanded;
|
||
}
|
||
}
|
||
|
||
bool EditorSession::canEditPixels() const
|
||
{
|
||
return canPaint();
|
||
}
|
||
|
||
// Fills the selection or the layer with one colour.
|
||
void EditorSession::fillSelection(FillSource source, std::function<void()> done)
|
||
{
|
||
const std::optional<ImageLayer> layer = activeLayer();
|
||
if (!canEditPixels() || !layer) {
|
||
if (done)
|
||
QMetaObject::invokeMethod(this, done, Qt::QueuedConnection);
|
||
return;
|
||
}
|
||
// A mask takes the palette's red as gray.
|
||
const PaletteColor value = paletteColor(source == FillSource::background);
|
||
// Live text takes the colour itself and stays text.
|
||
if (!m_isMaskSelected && !selection() && recolorText(layer->id, value)) {
|
||
if (done)
|
||
QMetaObject::invokeMethod(this, done, Qt::QueuedConnection);
|
||
return;
|
||
}
|
||
const QColor color = m_isMaskSelected ? QColor::fromRgbF(float(value.red), float(value.red), float(value.red)) : value.color();
|
||
applyPixelEdit(*layer, m_isMaskSelected ? QStringLiteral("Fill Mask") : QStringLiteral("Fill"), [color](BrushStroke &edit) { edit.fill(color); }, std::move(done));
|
||
}
|
||
|
||
// Delete with a selection: pixels clear; a mask takes background.
|
||
void EditorSession::clearSelectedPixels(std::function<void()> done)
|
||
{
|
||
const std::optional<ImageLayer> layer = activeLayer();
|
||
if (!selection() || !canEditPixels() || !layer) {
|
||
if (done)
|
||
QMetaObject::invokeMethod(this, done, Qt::QueuedConnection);
|
||
return;
|
||
}
|
||
if (m_isMaskSelected) {
|
||
fillSelection(FillSource::background, std::move(done));
|
||
return;
|
||
}
|
||
if (!layer->asset) {
|
||
if (done)
|
||
QMetaObject::invokeMethod(this, done, Qt::QueuedConnection);
|
||
return;
|
||
}
|
||
applyPixelEdit(*layer, QStringLiteral("Clear"), [](BrushStroke &edit) { edit.clearPixels(); }, std::move(done));
|
||
}
|
||
|
||
// The Delete key: clears the selection, else mask or layer.
|
||
void EditorSession::deleteKeyPressed()
|
||
{
|
||
if (selectedEffect()) {
|
||
removeSelectedEffect();
|
||
return;
|
||
}
|
||
if (selection())
|
||
clearSelectedPixels();
|
||
else
|
||
deleteLayerOrMask();
|
||
}
|
||
|
||
// A raster edit committed off the UI thread, one step.
|
||
void EditorSession::applyPixelEdit(const ImageLayer &layer, const QString &name, const std::function<void(BrushStroke &)> &paint, std::function<void()> done)
|
||
{
|
||
finishOpacityEdit();
|
||
try {
|
||
std::unique_ptr<BrushStroke> edit = makeRasterEdit(layer);
|
||
paint(*edit);
|
||
if (edit->patches().empty()) {
|
||
if (done)
|
||
QMetaObject::invokeMethod(this, done, Qt::QueuedConnection);
|
||
return;
|
||
}
|
||
commitRasterEdit(std::move(edit), name, {}, std::move(done));
|
||
} catch (const ProjectError &error) {
|
||
setBrushError(QString::fromUtf8(error.what()));
|
||
if (done)
|
||
QMetaObject::invokeMethod(this, done, Qt::QueuedConnection);
|
||
} catch (const ExportError &error) {
|
||
setBrushError(QString::fromUtf8(error.what()));
|
||
if (done)
|
||
QMetaObject::invokeMethod(this, done, Qt::QueuedConnection);
|
||
}
|
||
}
|
||
|
||
void EditorSession::deleteLayerOrMask()
|
||
{
|
||
if (selectedEffect()) {
|
||
removeSelectedEffect();
|
||
return;
|
||
}
|
||
const std::optional<ImageLayer> active = activeLayer();
|
||
if (m_isMaskSelected && active && active->mask && m_selectedLayerIDs.size() <= 1)
|
||
deleteLayerMask();
|
||
else
|
||
deleteSelectedLayers();
|
||
}
|
||
|
||
bool EditorSession::canInvert() const
|
||
{
|
||
const std::optional<ImageLayer> layer = activeLayer();
|
||
if (!m_document || !layer || m_isProjectBusy || m_isImporting || m_brushStroke || m_pixelMove || m_renamingLayerID || m_showsNewDocument || m_showsImporter
|
||
|| m_selectedLayerIDs.size() != 1 || (layer->isGroup && !m_isMaskSelected) || !m_document->effectiveVisibleIDs().contains(layer->id))
|
||
return false;
|
||
const std::optional<DocumentSelection> current = selection();
|
||
if (current && current->isEmpty())
|
||
return false;
|
||
return m_isMaskSelected ? layer->mask && layer->mask->isEnabled : layer->asset.has_value();
|
||
}
|
||
|
||
void EditorSession::invertPixels(std::function<void()> done)
|
||
{
|
||
// The caller resumes from the event loop, as after await.
|
||
const auto finish = [this, done] {
|
||
if (done)
|
||
QMetaObject::invokeMethod(this, done, Qt::QueuedConnection);
|
||
};
|
||
if (!canInvert()) {
|
||
finish();
|
||
return;
|
||
}
|
||
commitTransform();
|
||
// A pending gradient lands first, as Swift awaits it.
|
||
if (m_gradientEdit) {
|
||
commitGradient([this, done] { invertPixels(done); });
|
||
return;
|
||
}
|
||
if (!canInvert()) {
|
||
finish();
|
||
return;
|
||
}
|
||
const ImageLayer layer = activeLayer().value();
|
||
const bool mask = m_isMaskSelected;
|
||
finishOpacityEdit();
|
||
setIsProjectBusy(true);
|
||
PixelInvert::Job job{QImage(), mask, QTransform(), std::nullopt};
|
||
try {
|
||
// Flattening a painted asset may fail: caught like the rest.
|
||
job.image = mask ? layer.mask.value().asset.image() : layer.asset.value().image();
|
||
const std::optional<DocumentSelection> current = selection();
|
||
if (current)
|
||
job.selection = current->clip(m_document->size());
|
||
// A uniform 1×1 mask cannot hold a partial selection.
|
||
if (mask && job.selection && job.image.size() == QSize(1, 1)) {
|
||
job.image = expandedUniformMask(job.image, layer.asset ? layer.asset->size().width() : int(std::round(layer.size().width())),
|
||
layer.asset ? layer.asset->size().height() : int(std::round(layer.size().height())));
|
||
}
|
||
job.pixelToDocument = BrushRaster::pixelToDocument(mask ? layer.maskTransform() : layer.transform, job.image.width(), job.image.height());
|
||
} catch (const std::runtime_error &error) {
|
||
qCWarning(lcApp).noquote() << "cannot invert:" << error.what();
|
||
setBrushError(QString::fromUtf8(error.what()));
|
||
setIsProjectBusy(false);
|
||
finish();
|
||
return;
|
||
}
|
||
m_inverting = Inverting{layer.id, mask, layer.asset ? std::optional(layer.asset->identity()) : std::nullopt,
|
||
layer.mask ? std::optional(layer.mask->asset.identity()) : std::nullopt, std::move(done)};
|
||
m_inverter.setFuture(QtConcurrent::run([job]() -> Inverted {
|
||
try {
|
||
return Inverted{PixelInvert::run(job), std::nullopt};
|
||
} catch (const ExportError &error) {
|
||
return Inverted{std::nullopt, QString::fromUtf8(error.what())};
|
||
}
|
||
}));
|
||
}
|
||
|
||
void EditorSession::finishInvert()
|
||
{
|
||
const Inverted result = m_inverter.result();
|
||
const Inverting pending = std::exchange(m_inverting, std::nullopt).value();
|
||
// The document may have gone meanwhile: nothing to write.
|
||
const int index = m_document ? indexOf(m_document->layers, pending.layerID) : -1;
|
||
if (result.failure) {
|
||
qCWarning(lcApp).noquote() << "cannot invert:" << *result.failure;
|
||
setBrushError(result.failure);
|
||
} else if (index >= 0) {
|
||
// Only the layer the invert was computed from is written.
|
||
const ImageLayer ¤t = m_document->layers[size_t(index)];
|
||
const std::optional<ImageIdentity> image = current.asset ? std::optional(current.asset->identity()) : std::nullopt;
|
||
const std::optional<ImageIdentity> maskImage = current.mask ? std::optional(current.mask->asset.identity()) : std::nullopt;
|
||
if (image == pending.image && maskImage == pending.maskImage) {
|
||
try {
|
||
if (pending.mask) {
|
||
const ImportedImage asset = LayerMask::assetFrom(*result.image);
|
||
beginEdit(QStringLiteral("Invert Mask"));
|
||
m_document->layers[size_t(index)].mask = current.mask.value().replacing(asset);
|
||
} else {
|
||
const ImportedImage asset(*result.image, PixelAdjust::thumbnail(*result.image), current.name);
|
||
beginEdit(QStringLiteral("Invert"));
|
||
m_document->layers[size_t(index)].asset = asset;
|
||
// Swift rebuilds the layer without shape, effects and text.
|
||
m_document->layers[size_t(index)].shape = std::nullopt;
|
||
m_document->layers[size_t(index)].effects = std::nullopt;
|
||
m_document->layers[size_t(index)].text = std::nullopt;
|
||
}
|
||
endEdit();
|
||
++m_brushRevision;
|
||
} catch (const std::runtime_error &error) {
|
||
qCWarning(lcApp).noquote() << "cannot invert:" << error.what();
|
||
setBrushError(QString::fromUtf8(error.what()));
|
||
}
|
||
}
|
||
}
|
||
setIsProjectBusy(false);
|
||
if (pending.done)
|
||
QMetaObject::invokeMethod(this, pending.done, Qt::QueuedConnection);
|
||
}
|
||
|
||
PixelMove::PixelMove(std::shared_ptr<BrushStroke> raster, DocumentSelection origin, bool duplicate)
|
||
: raster(std::move(raster)), origin(std::move(origin)), duplicate(duplicate)
|
||
{
|
||
}
|
||
|
||
DocumentSelection PixelMove::movedSelection() const
|
||
{
|
||
return DocumentSelection{QTransform::fromTranslate(offset.width(), offset.height()).map(origin.path), origin.antialiased, origin.feather};
|
||
}
|
||
|
||
// Ctrl-drag: starts moving the selected pixels; false with none.
|
||
bool EditorSession::beginPixelMove(bool duplicate)
|
||
{
|
||
const std::optional<DocumentSelection> current = selection();
|
||
const std::optional<ImageLayer> layer = activeLayer();
|
||
// `canPaint` refuses a pixel move and an empty selection.
|
||
if (!current || !canPaint() || m_isMaskSelected || !layer || !layer->asset)
|
||
return false;
|
||
try {
|
||
std::shared_ptr<BrushStroke> raster = makeRasterEdit(*layer);
|
||
if (!raster->liftSelection())
|
||
return false;
|
||
finishOpacityEdit();
|
||
m_pixelMove = std::make_unique<PixelMove>(std::move(raster), *current, duplicate);
|
||
notify();
|
||
return true;
|
||
} catch (const ProjectError &error) {
|
||
setBrushError(QString::fromUtf8(error.what()));
|
||
} catch (const ExportError &error) {
|
||
setBrushError(QString::fromUtf8(error.what()));
|
||
}
|
||
return false;
|
||
}
|
||
|
||
// The pixels previewed `offset` whole document pixels away.
|
||
void EditorSession::movePixels(QSizeF offset)
|
||
{
|
||
if (!m_pixelMove)
|
||
return;
|
||
const QSizeF rounded(std::round(offset.width()), std::round(offset.height()));
|
||
try {
|
||
m_pixelMove->raster->moveLifted(rounded, m_pixelMove->duplicate);
|
||
} catch (const ProjectError &error) {
|
||
cancelPixelMove();
|
||
setBrushError(QString::fromUtf8(error.what()));
|
||
return;
|
||
} catch (const ExportError &error) {
|
||
cancelPixelMove();
|
||
setBrushError(QString::fromUtf8(error.what()));
|
||
return;
|
||
}
|
||
m_pixelMove->offset = rounded;
|
||
++m_brushRevision;
|
||
notify();
|
||
}
|
||
|
||
// The outline to draw, following a pixel move or transform.
|
||
std::optional<DocumentSelection> EditorSession::displayedSelection() const
|
||
{
|
||
if (m_pixelMove)
|
||
return m_pixelMove->movedSelection();
|
||
// Transforming selected pixels: the outline follows the handles.
|
||
const std::optional<DocumentSelection> current = selection();
|
||
if (m_transformEdit && current) {
|
||
if (const std::optional<QTransform> matrix = floatingSelectionTransform(*m_transformEdit))
|
||
return DocumentSelection{matrix->map(current->path), current->antialiased, current->feather};
|
||
}
|
||
return current;
|
||
}
|
||
|
||
// Pixels and moved outline commit together, one step.
|
||
void EditorSession::finishPixelMove(std::function<void()> done)
|
||
{
|
||
const auto finish = [this, done] {
|
||
if (done)
|
||
QMetaObject::invokeMethod(this, done, Qt::QueuedConnection);
|
||
};
|
||
if (!m_pixelMove || m_isProjectBusy) {
|
||
finish();
|
||
return;
|
||
}
|
||
const auto end = [this, finish] {
|
||
m_pixelMove.reset();
|
||
++m_brushRevision;
|
||
notify();
|
||
finish();
|
||
};
|
||
if (m_pixelMove->offset.isNull()) {
|
||
end();
|
||
return;
|
||
}
|
||
// The outline stays at its new place while committing.
|
||
const DocumentSelection moved = m_pixelMove->movedSelection();
|
||
commitRasterEdit(m_pixelMove->raster, m_pixelMove->duplicate ? QStringLiteral("Duplicate Pixels") : QStringLiteral("Move Pixels"),
|
||
[this, moved] { m_document->selection = moved; }, end);
|
||
}
|
||
|
||
void EditorSession::cancelPixelMove()
|
||
{
|
||
if (!m_pixelMove)
|
||
return;
|
||
m_pixelMove.reset();
|
||
++m_brushRevision;
|
||
notify();
|
||
}
|
||
|
||
// Ctrl-arrow: the selected pixels a step, as one undo step.
|
||
void EditorSession::nudgePixels(double dx, double dy, std::function<void()> done)
|
||
{
|
||
if (!beginPixelMove()) {
|
||
qCWarning(lcApp) << "no selected pixels to nudge";
|
||
if (done)
|
||
QMetaObject::invokeMethod(this, done, Qt::QueuedConnection);
|
||
return;
|
||
}
|
||
movePixels(QSizeF(dx, dy));
|
||
finishPixelMove(std::move(done));
|
||
}
|