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OmaPhoto/tests/InlineTextPointerTests.cpp
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#include "InlineTextFixtures.h"
#include <QLineEdit>
#include <array>
// The Type tool's pointer: new text, clicks, drags, selections.
namespace {
// Where a prefix of a line ends, plus a nudge.
QPointF after(TextCanvas &shown, const QString &prefix, double nudge = 1, int line = 0)
{
const LayerTextStyle style = shown.session.textDraft().value().style;
const double padding = LayerTextStyle::padding;
const double x = QFontMetricsF(TextLayout::font(style)).horizontalAdvance(prefix);
return shown.editor().textTransform().map(QPointF(padding + x + nudge, padding + style.lineHeight() * (line + 0.5)));
}
// The bounds of the pixels two grabs disagree on.
QRect changed(const QImage &from, const QImage &to)
{
QRect found;
for (int y = 0; y < to.height(); ++y) {
for (int x = 0; x < to.width(); ++x) {
if (to.pixel(x, y) != from.pixel(x, y))
found |= QRect(x, y, 1, 1);
}
}
return found;
}
}
class InlineTextPointerTests : public QObject {
Q_OBJECT
private slots:
void aClickOrADragBeginsText();
void aClickOpensTheTextUnderIt();
void clicksPlaceTheCaretAndDragsSelect();
void doubleAndTripleClicksTakeWordsAndParagraphs();
void aClickLandsAPreedit();
void anUndoneCanvasLeavesTheBoxInert();
void aLostReleaseDropsTheBox();
void shiftExtendsByTheLastClicksUnit();
void blankSpaceAndEmptyLinesTakeClicks();
};
void InlineTextPointerTests::aClickOrADragBeginsText()
{
TextCanvas shown;
shown.session.cancelText();
// A click is Swift's small box: point text there.
shown.click(QPointF(50, 60));
QCOMPARE(shown.session.textDraft().value().origin, shown.clickedCorner(QPointF(50, 60)));
QVERIFY(!shown.session.textDraft().value().style.boxSize);
shown.session.cancelText();
// A drag draws a box, shown in the accent meanwhile.
const QImage before = shown.canvas->grab().toImage();
shown.press(QPointF(40, 50));
shown.move(QPointF(140, 110));
const QImage drawing = shown.canvas->grab().toImage();
const QRect drawn = changed(before, drawing);
QVERIFY2(std::abs(drawn.left() - 40) <= 1 && std::abs(drawn.right() - 140) <= 1 && std::abs(drawn.top() - 50) <= 1 && std::abs(drawn.bottom() - 110) <= 1,
qPrintable(QString("%1 %2 %3 %4").arg(drawn.left()).arg(drawn.top()).arg(drawn.right()).arg(drawn.bottom())));
QCOMPARE(drawing.pixel(90, 80), before.pixel(90, 80));
// One point wide on whole points: two rows, half each.
const QColor accent = shown.canvas->palette().color(QPalette::Highlight);
const auto half = [](int line, int ground, int shown) { return std::abs(shown - (line + ground) / 2) <= 2; };
for (const int row : {49, 50}) {
const QColor ground = before.pixelColor(90, row), edge = drawing.pixelColor(90, row);
QVERIFY2(half(accent.red(), ground.red(), edge.red()) && half(accent.green(), ground.green(), edge.green())
&& half(accent.blue(), ground.blue(), edge.blue()),
qPrintable(edge.name()));
}
shown.release(QPointF(140, 110));
QCOMPARE(shown.session.textDraft().value().style.boxSize, std::optional(QSizeF(100, 60)));
QCOMPARE(shown.session.textDraft().value().origin, QPointF(40, 50));
// Under four pixels both ways: a click; else a box.
const std::array<std::pair<QPointF, std::optional<QSizeF>>, 3> drags{
{{QPointF(43, 53), std::nullopt}, {QPointF(44, 54), QSizeF(16, 16)}, {QPointF(43, 100), QSizeF(16, 50)}}};
for (const auto &[to, box] : drags) {
shown.session.cancelText();
shown.drag(QPointF(40, 50), to);
QCOMPARE(shown.session.textDraft().value().style.boxSize, box);
}
shown.session.cancelText();
// Escape, or another tool, drops the box being drawn.
shown.press(QPointF(40, 50));
shown.move(QPointF(140, 110));
shown.key(Qt::Key_Escape);
shown.release(QPointF(140, 110));
QVERIFY(!shown.session.textDraft());
QCOMPARE(shown.canvas->grab().toImage().pixel(90, 50), before.pixel(90, 50));
shown.press(QPointF(40, 50));
shown.move(QPointF(140, 110));
shown.session.selectTool(NavigationTool::marquee);
shown.session.selectTool(NavigationTool::type);
shown.release(QPointF(140, 110));
QVERIFY(!shown.session.textDraft());
// A box past the limits is refused; its outline goes.
shown.press(QPointF(40, 50));
shown.move(QPointF(40'040, 110));
QCoreApplication::processEvents();
PaintSpy spy(*shown.canvas);
shown.release(QPointF(40'040, 110));
QVERIFY(!shown.session.textDraft());
QTRY_VERIFY(spy.painted.contains(QPoint(40, 80)));
QCOMPARE(shown.canvas->grab().toImage().pixel(40, 80), before.pixel(40, 80));
}
void InlineTextPointerTests::aClickOpensTheTextUnderIt()
{
TextCanvas shown;
// A click beside open text keeps it, then begins anew.
shown.type(QStringLiteral("Kept"));
const size_t count = shown.session.document().value().layers.size();
shown.click(QPointF(300, 250));
QCOMPARE(shown.session.document().value().layers.size(), count + 1);
QCOMPARE(shown.session.textDraft().value().origin, shown.clickedCorner(QPointF(300, 250)));
shown.session.cancelText();
// A click opens text, active or not, the caret there.
const QUuid kept = shown.session.document().value().layers.back().id;
shown.session.selectLayer(shown.session.document().value().layers.front().id);
const QPointF on(20 + LayerTextStyle::padding + 1, 80);
shown.click(on);
QCOMPARE(shown.session.textDraft().value().layerID, std::optional(kept));
QCOMPARE(shown.caret(), 0);
shown.session.cancelText();
// Hidden text stays shut: the click begins new text.
shown.session.toggleLayerVisibility(kept);
shown.click(on);
QVERIFY(!shown.session.textDraft().value().layerID);
shown.session.cancelText();
shown.session.toggleLayerVisibility(kept);
// A new box widened leftwards lands where it shows.
shown.drag(QPointF(40, 150), QPointF(240, 250));
shown.type(QStringLiteral("Box"));
const QPointF left = shown.editor().boxTransform().map(QPointF(0, 50));
shown.drag(left, left - QPointF(20, 0));
QVERIFY(shown.session.finishText());
QCOMPARE(shown.session.activeLayer().value().transform.origin, QPointF(20, 150));
}
void InlineTextPointerTests::clicksPlaceTheCaretAndDragsSelect()
{
TextCanvas shown;
shown.type(QStringLiteral("alpha beta"));
shown.click(after(shown, QStringLiteral("alp")));
QCOMPARE(shown.selection(), (TextRange{3, 3}));
// A drag selects; Shift-click takes the selection on.
shown.drag(after(shown, QStringLiteral("al")), after(shown, QStringLiteral("alpha b")));
QCOMPARE(shown.selection(), (TextRange{2, 7}));
shown.click(after(shown, QStringLiteral("alpha be")), Qt::ShiftModifier);
QCOMPARE(shown.selection(), (TextRange{2, 8}));
// Shift's drag keeps that anchor, past it both ways.
shown.press(after(shown, QStringLiteral("alpha ")), Qt::ShiftModifier);
QCOMPARE(shown.selection(), (TextRange{2, 6}));
shown.move(after(shown, QStringLiteral("a")), Qt::ShiftModifier);
QCOMPARE(shown.editor().anchor(), 2);
QCOMPARE(shown.caret(), 1);
shown.release(after(shown, QStringLiteral("a")), Qt::ShiftModifier);
// Without the button held a move drags nothing.
shown.press(after(shown, QStringLiteral("alp")));
shown.hover(after(shown, QStringLiteral("alpha b")));
QCOMPARE(shown.selection(), (TextRange{3, 3}));
shown.release(after(shown, QStringLiteral("alp")));
// A click on a later line finds that line.
shown.key(Qt::Key_End);
shown.key(Qt::Key_Return);
shown.type(QStringLiteral("gamma"));
shown.click(after(shown, QStringLiteral("ga"), 1, 1));
QCOMPARE(shown.caret(), 13);
// Clicks go through a flipped layer's mirror, as it shows.
QVERIFY(shown.session.finishText());
const QUuid id = shown.session.activeLayerID().value();
rewrite(shown.session, [&](ProjectSnapshot &snapshot) { record(snapshot, id).transform.flipX = true; });
shown.session.editActiveText();
shown.click(after(shown, QStringLiteral("al")));
QCOMPARE(shown.caret(), 2);
}
void InlineTextPointerTests::doubleAndTripleClicksTakeWordsAndParagraphs()
{
TextCanvas shown;
shown.type(QStringLiteral("alpha beta"));
// Qt sends a double click's second press by itself.
const auto doubleClick = [&](QPointF at) {
shown.click(at);
QTest::mouseDClick(shown.canvas, Qt::LeftButton, Qt::NoModifier, at.toPoint());
};
// The word under the pointer, from any of its letters.
const QPointF word = after(shown, QStringLiteral("alpha be"));
doubleClick(word);
QCOMPARE(shown.selection(), (TextRange{6, 10}));
shown.release(word);
doubleClick(after(shown, QStringLiteral("alpha "), 2));
QCOMPARE(shown.selection(), (TextRange{6, 10}));
shown.release(word);
doubleClick(after(shown, QStringLiteral("alpha"), -2));
QCOMPARE(shown.selection(), (TextRange{0, 5}));
shown.release(word);
// Its drag goes by words, forwards and back past it.
doubleClick(word);
shown.move(after(shown, QStringLiteral("alpha bet")));
QCOMPARE(shown.editor().anchor(), 6);
QCOMPARE(shown.caret(), 10);
shown.move(after(shown, QStringLiteral("a")));
QCOMPARE(shown.editor().anchor(), 10);
QCOMPARE(shown.caret(), 0);
shown.move(after(shown, QStringLiteral("alpha bet")));
QCOMPARE(shown.editor().anchor(), 6);
QCOMPARE(shown.caret(), 10);
shown.release(word);
// A third click soon after takes the paragraph and break.
TextDraft draft = shown.session.textDraft().value();
draft.style.content = QStringLiteral("alpha beta\r\ngamma");
shown.session.setTextDraft(draft);
doubleClick(word);
shown.release(word);
shown.click(word);
QCOMPARE(shown.selection(), (TextRange{0, 12}));
// Fourth clicks and far third clicks are single again.
shown.click(word);
QCOMPARE(shown.selection(), (TextRange{8, 8}));
doubleClick(word);
shown.release(word);
shown.click(after(shown, QStringLiteral("al")));
QCOMPARE(shown.selection(), (TextRange{2, 2}));
}
void InlineTextPointerTests::aClickLandsAPreedit()
{
TextCanvas shown;
shown.type(QStringLiteral("ab"));
shown.compose(QStringLiteral("ni"));
// Qt asks the input method to commit; else it lands.
shown.click(after(shown, QStringLiteral("a")));
QVERIFY(!shown.editor().marked());
QCOMPARE(shown.content(), QString("abni"));
QCOMPARE(shown.caret(), 1);
shown.key(Qt::Key_Z, Qt::ControlModifier);
QCOMPARE(shown.content(), QString());
// A handle's press lands it too.
shown.type(QStringLiteral("ab"));
shown.compose(QStringLiteral("ni"));
const QSizeF size = shown.editor().logicalSize();
const QPointF right = shown.editor().boxTransform().map(QPointF(size.width(), size.height() / 2));
shown.press(right);
QVERIFY(!shown.editor().marked());
QCOMPARE(shown.content(), QString("abni"));
shown.release(right);
}
void InlineTextPointerTests::anUndoneCanvasLeavesTheBoxInert()
{
TextCanvas shown;
shown.session.cancelText();
// Undo takes the canvas mid-drag: the box makes nothing.
shown.press(QPointF(40, 50));
shown.move(QPointF(140, 110));
shown.session.undo();
shown.session.undo();
QVERIFY(!shown.session.document());
shown.move(QPointF(160, 130));
const QImage blank = shown.canvas->grab().toImage();
QCOMPARE(blank.pixel(40, 80), blank.pixel(300, 250));
shown.release(QPointF(160, 130));
QVERIFY(!shown.session.textDraft());
}
void InlineTextPointerTests::aLostReleaseDropsTheBox()
{
TextCanvas shown;
shown.session.cancelText();
const QImage before = shown.canvas->grab().toImage();
// A move without the button: its release was lost.
shown.press(QPointF(40, 50));
shown.move(QPointF(140, 110));
QCoreApplication::processEvents();
PaintSpy hover(*shown.canvas);
shown.hover(QPointF(200, 150));
QTRY_VERIFY(hover.painted.contains(QPoint(40, 80)));
QCOMPARE(shown.canvas->grab().toImage().pixel(40, 80), before.pixel(40, 80));
shown.release(QPointF(200, 150));
QVERIFY(!shown.session.textDraft());
// A press after a lost release starts afresh.
shown.press(QPointF(40, 50));
shown.move(QPointF(140, 110));
QCoreApplication::processEvents();
PaintSpy press(*shown.canvas);
shown.press(QPointF(300, 250));
QTRY_VERIFY(press.painted.contains(QPoint(40, 80)));
shown.release(QPointF(300, 250));
QCOMPARE(shown.session.textDraft().value().origin, shown.clickedCorner(QPointF(300, 250)));
QVERIFY(!shown.session.textDraft().value().style.boxSize);
shown.session.cancelText();
// So does a lost focus.
shown.press(QPointF(40, 50));
shown.move(QPointF(140, 110));
QLineEdit field(&shown.window);
field.show();
field.setFocus();
QTRY_VERIFY(field.hasFocus());
shown.release(QPointF(140, 110));
QVERIFY(!shown.session.textDraft());
QCOMPARE(shown.canvas->grab().toImage().pixel(40, 80), before.pixel(40, 80));
}
void InlineTextPointerTests::shiftExtendsByTheLastClicksUnit()
{
TextCanvas shown;
shown.type(QStringLiteral("alpha beta gamma"));
const auto doubleClick = [&](QPointF at) {
shown.click(at);
QTest::mouseDClick(shown.canvas, Qt::LeftButton, Qt::NoModifier, at.toPoint());
shown.release(at);
};
// Before any click, Shift extends from the caret.
shown.click(after(shown, QStringLiteral("alpha beta ga")), Qt::ShiftModifier);
QCOMPARE(shown.editor().anchor(), 16);
QCOMPARE(shown.caret(), 13);
// After a double click, by whole words either way.
doubleClick(after(shown, QStringLiteral("al")));
QCOMPARE(shown.selection(), (TextRange{0, 5}));
shown.click(after(shown, QStringLiteral("alpha be")), Qt::ShiftModifier);
QCOMPARE(shown.selection(), (TextRange{0, 10}));
shown.click(after(shown, QStringLiteral("alpha beta ga")), Qt::ShiftModifier);
QCOMPARE(shown.selection(), (TextRange{0, 16}));
doubleClick(after(shown, QStringLiteral("alpha be")));
shown.click(after(shown, QStringLiteral("al")), Qt::ShiftModifier);
QCOMPARE(shown.editor().anchor(), 10);
QCOMPARE(shown.caret(), 0);
shown.press(after(shown, QStringLiteral("alpha beta ga")), Qt::ShiftModifier);
QCOMPARE(shown.selection(), (TextRange{6, 16}));
shown.move(after(shown, QStringLiteral("al")), Qt::ShiftModifier);
QCOMPARE(shown.editor().anchor(), 10);
QCOMPARE(shown.caret(), 0);
shown.release(after(shown, QStringLiteral("al")), Qt::ShiftModifier);
// A key's selection brings characters back.
shown.key(Qt::Key_Right, Qt::ShiftModifier);
shown.click(after(shown, QStringLiteral("alpha beta ga")), Qt::ShiftModifier);
QCOMPARE(shown.selection(), (TextRange{10, 13}));
doubleClick(after(shown, QStringLiteral("alpha be")));
shown.click(after(shown, QStringLiteral("al")), Qt::ShiftModifier);
shown.key(Qt::Key_Left);
shown.click(after(shown, QStringLiteral("alpha beta ga")), Qt::ShiftModifier);
QCOMPARE(shown.selection(), (TextRange{0, 13}));
// So does other text, or a style from anywhere.
doubleClick(after(shown, QStringLiteral("al")));
TextDraft draft = shown.session.textDraft().value();
draft.style.content = QStringLiteral("omega beta gamma");
shown.session.setTextDraft(draft);
shown.click(after(shown, QStringLiteral("omega be")), Qt::ShiftModifier);
QCOMPARE(shown.selection(), (TextRange{0, 8}));
doubleClick(after(shown, QStringLiteral("om")));
shown.key(Qt::Key_Right, Qt::AltModifier);
shown.key(Qt::Key_Left, Qt::AltModifier);
shown.click(after(shown, QStringLiteral("omega be")), Qt::ShiftModifier);
QCOMPARE(shown.selection(), (TextRange{0, 8}));
doubleClick(after(shown, QStringLiteral("om")));
shown.session.changeTextStyle([](LayerTextStyle &style) { style.fontSize = 60; });
shown.click(after(shown, QStringLiteral("omega be")), Qt::ShiftModifier);
QCOMPARE(shown.selection(), (TextRange{0, 8}));
// A style set mid-drag ends the drag; so does typing.
shown.press(after(shown, QStringLiteral("omega b")));
shown.session.changeTextStyle([](LayerTextStyle &style) { style.fontSize = 72; });
shown.move(after(shown, QStringLiteral("om")));
QCOMPARE(shown.selection(), (TextRange{7, 7}));
shown.release(after(shown, QStringLiteral("om")));
shown.press(after(shown, QStringLiteral("om")));
shown.type(QStringLiteral("X"));
shown.move(after(shown, QStringLiteral("omega b")));
QCOMPARE(shown.selection(), (TextRange{3, 3}));
shown.release(after(shown, QStringLiteral("omega b")));
// Even the same letter typed over the letter selected.
shown.press(after(shown, QStringLiteral("om")));
shown.move(after(shown, QStringLiteral("omX")));
QCOMPARE(shown.selection(), (TextRange{2, 3}));
shown.type(QStringLiteral("X"));
shown.move(after(shown, QStringLiteral("omXeg")));
QCOMPARE(shown.selection(), (TextRange{3, 3}));
shown.release(after(shown, QStringLiteral("omXeg")));
}
void InlineTextPointerTests::blankSpaceAndEmptyLinesTakeClicks()
{
TextCanvas shown;
shown.session.cancelText();
shown.drag(QPointF(20, 20), QPointF(380, 280));
TextDraft draft = shown.session.textDraft().value();
draft.style.fontSize = 24;
draft.style.content = QStringLiteral("abc\ndef");
shown.session.setTextDraft(draft);
// Below the lines is the end; above them, the start.
shown.click(after(shown, QString(), 1, 2));
QCOMPARE(shown.caret(), 7);
shown.press(after(shown, QStringLiteral("d"), 1, 1));
shown.move(after(shown, QStringLiteral("d"), 1, -1));
QCOMPARE(shown.editor().anchor(), 5);
QCOMPARE(shown.caret(), 0);
shown.release(after(shown, QStringLiteral("d"), 1, -1));
// An empty last line has no word or paragraph.
draft = shown.session.textDraft().value();
draft.style.content = QStringLiteral("abc\n\ndef\n");
shown.session.setTextDraft(draft);
const auto clicks = [&](QPointF at, int count) {
shown.click(at);
QTest::mouseDClick(shown.canvas, Qt::LeftButton, Qt::NoModifier, at.toPoint());
shown.release(at);
if (count == 3)
shown.click(at);
};
clicks(after(shown, QString(), 1, 3), 3);
QCOMPARE(shown.selection(), (TextRange{9, 9}));
clicks(after(shown, QString(), 1, 3), 2);
QCOMPARE(shown.selection(), (TextRange{9, 9}));
clicks(after(shown, QStringLiteral("d"), 1, 2), 2);
QCOMPARE(shown.selection(), (TextRange{5, 8}));
// An empty line between others is its break.
clicks(after(shown, QString(), 1, 1), 3);
QCOMPARE(shown.selection(), (TextRange{4, 5}));
// Past the text, a double click takes its last word.
draft = shown.session.textDraft().value();
draft.style.content = QStringLiteral("abc def");
shown.session.setTextDraft(draft);
clicks(after(shown, QStringLiteral("abc def"), 20), 2);
QCOMPARE(shown.selection(), (TextRange{4, 7}));
// A final line separator leaves no word either.
draft = shown.session.textDraft().value();
draft.style.content = QStringLiteral("abc") + QChar(QChar::LineSeparator);
shown.session.setTextDraft(draft);
clicks(after(shown, QString(), 1, 1), 2);
QCOMPARE(shown.selection(), (TextRange{4, 4}));
// Below an overfull box's lines: the end of what shows.
draft = shown.session.textDraft().value();
draft.style.boxSize = QSizeF(150, 100);
draft.style.content = QStringLiteral("aaa bbb ccc ddd eee fff");
shown.session.setTextDraft(draft);
shown.click(after(shown, QStringLiteral("ccc"), 1, 1));
shown.key(Qt::Key_End);
const int shows = shown.caret();
QVERIFY(shows < 23);
shown.click(after(shown, QString(), 1, 2));
QCOMPARE(shown.caret(), shows);
}
QTEST_MAIN(InlineTextPointerTests)
#include "InlineTextPointerTests.moc"
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