46 lines
1.8 KiB
C++
46 lines
1.8 KiB
C++
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#include "ScrollAreaHelpers.hpp"
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#include "../GUIManager.hpp"
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namespace GUIStuff { namespace ElementHelpers {
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void scroll_area_many_entries(GUIManager& gui, const char* id, const ScrollBarManyEntriesOptions& options) {
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gui.element<ScrollArea>(id, ScrollArea::Options{
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.scrollVertical = true,
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.clipHorizontal = options.clipHorizontal,
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.clipVertical = true,
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.showScrollbarY = true,
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.innerContent = [&, options](const ScrollArea::InnerContentParameters& params) {
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options.innerContentExtraCallback(params);
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float absScrollAmount = std::fabs(params.scrollOffset.y());
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size_t startPoint = absScrollAmount / options.entryHeight;
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size_t elementsContainable = (params.containerDimensions.y() / options.entryHeight) + 2; // Displaying 2 more elements ensures that there isn't any empty space in the container
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size_t endPoint = std::min(options.entryCount, startPoint + elementsContainable);
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if(startPoint != 0) {
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CLAY_AUTO_ID({
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.layout = {
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.sizing = {.width = CLAY_SIZING_GROW(0), .height = CLAY_SIZING_FIXED(startPoint * options.entryHeight)},
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}
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}) { }
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}
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for(size_t i = startPoint; i < endPoint; i++) {
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gui.push_id(i);
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options.elementContent(i);
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gui.pop_id();
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}
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if(endPoint != options.entryCount) {
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CLAY_AUTO_ID({
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.layout = {
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.sizing = {.width = CLAY_SIZING_GROW(0), .height = CLAY_SIZING_FIXED((options.entryCount - endPoint) * options.entryHeight)},
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}
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}) { }
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}
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}
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});
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}
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}}
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