the shortcut

src/graphics/ui/elements/TrackBar.cpp

@@ -0,0 +1,114 @@
+#include "TrackBar.hpp"
+
+#include "../../core/GfxContext.h"
+#include "../../core/Batch2D.h"
+#include "../../../assets/Assets.h"
+
+using namespace gui;
+
+TrackBar::TrackBar(
+    double min, 
+    double max, 
+    double value, 
+    double step, 
+    int trackWidth
+) : UINode(glm::vec2(26)), 
+    min(min), 
+    max(max), 
+    value(value), 
+    step(step), 
+    trackWidth(trackWidth) 
+{
+    setColor(glm::vec4(0.f, 0.f, 0.f, 0.4f));
+    setHoverColor(glm::vec4(0.01f, 0.02f, 0.03f, 0.5f));
+}
+
+void TrackBar::draw(const GfxContext* pctx, Assets* assets) {
+    if (supplier) {
+        value = supplier();
+    }
+    glm::vec2 pos = calcPos();
+    auto batch = pctx->getBatch2D();
+    batch->texture(nullptr);
+    batch->setColor(hover ? hoverColor : color);
+    batch->rect(pos.x, pos.y, size.x, size.y);
+
+    float width = size.x;
+    float t = (value - min) / (max-min+trackWidth*step);
+
+    batch->setColor(trackColor);
+    int actualWidth = size.x * (trackWidth / (max-min+trackWidth*step) * step);
+    batch->rect(pos.x + width * t, pos.y, actualWidth, size.y);
+}
+
+void TrackBar::setSupplier(doublesupplier supplier) {
+    this->supplier = supplier;
+}
+
+void TrackBar::setConsumer(doubleconsumer consumer) {
+    this->consumer = consumer;
+}
+
+void TrackBar::mouseMove(GUI*, int x, int y) {
+    glm::vec2 pos = calcPos();
+    value = x;
+    value -= pos.x;
+    value = (value)/size.x * (max-min+trackWidth*step);
+    value += min;
+    value = (value > max) ? max : value;
+    value = (value < min) ? min : value;
+    value = (int64_t)round(value / step) * step;
+
+    if (consumer) {
+        consumer(value);
+    }
+}
+
+
+double TrackBar::getValue() const {
+    return value;
+}
+
+double TrackBar::getMin() const {
+    return min;
+}
+
+double TrackBar::getMax() const {
+    return max;
+}
+
+double TrackBar::getStep() const {
+    return step;
+}
+
+int TrackBar::getTrackWidth() const {
+    return trackWidth;
+}
+
+glm::vec4 TrackBar::getTrackColor() const {
+    return trackColor;
+}
+
+void TrackBar::setValue(double x) {
+    value = x;
+}
+
+void TrackBar::setMin(double x) {
+    min = x;
+}
+
+void TrackBar::setMax(double x) {
+    max = x;
+}
+
+void TrackBar::setStep(double x) {
+    step = x;
+}
+
+void TrackBar::setTrackWidth(int width) {
+    trackWidth = width;
+}
+
+void TrackBar::setTrackColor(glm::vec4 color) {
+    trackColor = color;
+}