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Add ValueSlider, a slider whose number stays readable - #622
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ImGuiWidgets.ValueSlider (float and int) draws a frame filled up to the value with the value centered and nothing drawn over it. Drags are relative, Shift drags finely, Ctrl+click types, and a double-click resets to ValueSliderOptions.ResetValue or types when there is none. Options add a number format, a unit suffix and a bipolar fill from zero. The frame and label are one item, as with ImGui.SliderFloat, so IsItemActivated and IsItemDeactivatedAfterEdit work after it. Adds a demo section, an isolation suite, unit tests for the ImGui-free ValueSliderState, and a gallery tile. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01VX31mmLGVNK3y28fjKiFmB
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Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01VX31mmLGVNK3y28fjKiFmB
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This was referenced Oct 12, 2026
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Requested by Matt · project thread
Before: the only single-value slider was ImGui's own
SliderFloat, whose grab rectangle sits over the number and hides it as you drag.After:
ImGuiWidgets.ValueSlider(float and int) draws a frame filled from the left up to the value, with the formatted value centered and nothing drawn over it. Drag anywhere to change it, Shift to go finely, Ctrl+click to type, and double-click to reset (or to type, when no reset value is set).ValueSliderOptionsadds a number format (by default chosen from the range), a unit suffix such as%,°orpx, a reset value, the fine-drag scale, andValueSliderFill.FromZerofor bipolar ranges such as -100..100. Text over the fill switches to a readable color when the theme's own text color would not read against it.How: the frame and label are one ImGui item (
ItemSize/ItemAdd/ButtonBehavior, asSliderFloatdoes it), and the widget callsMarkItemEdited, so a drop-in replacement forSliderFloatkeeps working withIsItemActivated,IsItemDeactivatedAfterEditand a probe mark taken straight after the call. Only the frame takes the pointer. Drags are relative, so a press never jumps the value. Typing opens anInputTextwith the slider's own id in the same place. Formatting, parsing, drag arithmetic and the fill span live in the ImGui-freeValueSliderState.Added: a demo section, an 18-test isolation suite, 29 unit tests, a demo UI test and a gallery tile. Ran locally: widget unit tests (1074), widget UI tests (737), widgets demo UI tests (53) and gallery UI tests (6), all passing. I also checked it in both themes at 100% and 150%.
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https://claude.ai/code/session_01VX31mmLGVNK3y28fjKiFmB
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