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feat(input): Ctrl restricts keyboard zoom to x, Alt to y
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Martino Ferrari committed 2026-10-04 12:03:01 +02:00
1 parent 0ee6e10c81
commit 26a7c82a80
2 files changed
+41 -10
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tests/test_controller.cpp
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@@ -263,6 +263,27 @@ PLOT_TEST(key_minus_zooms_out) {
PLOT_CHECK(f.plot.x_range(f.ax).span() > 100.0);
}
PLOT_TEST(ctrl_plus_zooms_only_x) {
Fixture f;
f.ay = f.plot.add_y_axis({"v", {-1.0, 1.0}, false, plot::AxisPlace::Left, false});
const f64 x_before = f.plot.x_range(f.ax).span();
const f64 y_before = f.plot.y_range(f.ay).span();
f.controller.on_key({plot::input::kKeyZoomIn, kCtrl, true});
PLOT_CHECK(f.plot.x_range(f.ax).span() < x_before);
PLOT_CHECK_NEAR(f.plot.y_range(f.ay).span(), y_before, 1e-12);
}
PLOT_TEST(alt_plus_zooms_only_y) {
Fixture f;
f.ay = f.plot.add_y_axis({"v", {-1.0, 1.0}, false, plot::AxisPlace::Left, false});
constexpr plot::u32 kAlt = static_cast<plot::u32>(plot::input::Mod::Alt);
const f64 x_before = f.plot.x_range(f.ax).span();
const f64 y_before = f.plot.y_range(f.ay).span();
f.controller.on_key({plot::input::kKeyZoomIn, kAlt, true});
PLOT_CHECK_NEAR(f.plot.x_range(f.ax).span(), x_before, 1e-12);
PLOT_CHECK(f.plot.y_range(f.ay).span() < y_before);
}
/// A host can hand the controller a coordinate that is not a number: ImGui reports
/// (-FLT_MAX, -FLT_MAX) for "no mouse position", and any host can produce a NaN out
/// of a degenerate mapping of its own. The pan arithmetic runs through the axis