66 lines
1.7 KiB
C++
66 lines
1.7 KiB
C++
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/*
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src/progressbar.cpp -- Standard widget for visualizing progress
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NanoGUI was developed by Wenzel Jakob <wenzel@inf.ethz.ch>.
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The widget drawing code is based on the NanoVG demo application
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by Mikko Mononen.
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All rights reserved. Use of this source code is governed by a
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BSD-style license that can be found in the LICENSE.txt file.
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*/
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#include <nanogui/progressbar.h>
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#include <nanogui/opengl.h>
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#include <nanogui/serializer/core.h>
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NAMESPACE_BEGIN(nanogui)
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ProgressBar::ProgressBar(Widget *parent)
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: Widget(parent), mValue(0.0f) {}
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Vector2i ProgressBar::preferredSize(NVGcontext *) const {
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return Vector2i(70, 12);
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}
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void ProgressBar::draw(NVGcontext* ctx) {
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Widget::draw(ctx);
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NVGpaint paint = nvgBoxGradient(
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ctx, mPos.x() + 1, mPos.y() + 1,
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mSize.x()-2, mSize.y(), 3, 4, Color(0, 32), Color(0, 92));
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nvgBeginPath(ctx);
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nvgRoundedRect(ctx, mPos.x(), mPos.y(), mSize.x(), mSize.y(), 3);
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nvgFillPaint(ctx, paint);
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nvgFill(ctx);
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float value = std::min(std::max(0.0f, mValue), 1.0f);
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int barPos = (int) std::round((mSize.x() - 2) * value);
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paint = nvgBoxGradient(
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ctx, mPos.x(), mPos.y(),
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barPos+1.5f, mSize.y()-1, 3, 4,
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Color(220, 100), Color(128, 100));
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nvgBeginPath(ctx);
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nvgRoundedRect(
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ctx, mPos.x()+1, mPos.y()+1,
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barPos, mSize.y()-2, 3);
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nvgFillPaint(ctx, paint);
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nvgFill(ctx);
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}
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void ProgressBar::save(Serializer &s) const {
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Widget::save(s);
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s.set("value", mValue);
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}
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bool ProgressBar::load(Serializer &s) {
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if (!Widget::load(s))
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return false;
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if (!s.get("value", mValue))
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return false;
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return true;
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}
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NAMESPACE_END(nanogui)
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