ExampleApplication() : nanogui::Screen(Eigen::Vector2i(1024, 768), "NanoGUI Test") {
using namespace nanogui;
Window *window = new Window(this, "Button demo");
window->setPosition(Vector2i(15, 15));
window->setLayout(new GroupLayout());
/* No need to store a pointer, the data structure will be automatically
freed when the parent window is deleted */
new Label(window, "Push buttons", "sans-bold");
Button *b = new Button(window, "Plain button");
b->setCallback([] { cout << "pushed!" << endl; });
/* Alternative construction notation using variadic template */
b = window->add<Button>("Styled", ENTYPO_ICON_ROCKET);
b->setBackgroundColor(Color(0, 0, 255, 25));
b->setCallback([] { cout << "pushed!" << endl; });
new Label(window, "Toggle buttons", "sans-bold");
b = new Button(window, "Toggle me");
b->setFlags(Button::ToggleButton);
b->setChangeCallback([](bool state) { cout << "Toggle button state: " << state << endl; });
new Label(window, "Radio buttons", "sans-bold");
b = new Button(window, "Radio button 1");
b->setFlags(Button::RadioButton);
b = new Button(window, "Radio button 2");
b->setFlags(Button::RadioButton);
new Label(window, "A tool palette", "sans-bold");
Widget *tools = new Widget(window);
tools->setLayout(new BoxLayout(Orientation::Horizontal,
Alignment::Middle, 0, 6));
b = new ToolButton(tools, ENTYPO_ICON_CLOUD);
b = new ToolButton(tools, ENTYPO_ICON_FF);
b = new ToolButton(tools, ENTYPO_ICON_COMPASS);
b = new ToolButton(tools, ENTYPO_ICON_INSTALL);
new Label(window, "Popup buttons", "sans-bold");
PopupButton *popupBtn = new PopupButton(window, "Popup", ENTYPO_ICON_EXPORT);
Popup *popup = popupBtn->popup();
popup->setLayout(new GroupLayout());
new Label(popup, "Arbitrary widgets can be placed here");
new CheckBox(popup, "A check box");
popupBtn = new PopupButton(popup, "Recursive popup", ENTYPO_ICON_FLASH);
popup = popupBtn->popup();
popup->setLayout(new GroupLayout());
new CheckBox(popup, "Another check box");
window = new Window(this, "Basic widgets");
window->setPosition(Vector2i(200, 15));
window->setLayout(new GroupLayout());
new Label(window, "Message dialog", "sans-bold");
tools = new Widget(window);
tools->setLayout(new BoxLayout(Orientation::Horizontal,
Alignment::Middle, 0, 6));
b = new Button(tools, "Info");
b->setCallback([&] {
auto dlg = new MessageDialog(this, MessageDialog::Type::Information, "Title", "This is an information message");
dlg->setCallback([](int result) { cout << "Dialog result: " << result << endl; });
});
b = new Button(tools, "Warn");
b->setCallback([&] {
auto dlg = new MessageDialog(this, MessageDialog::Type::Warning, "Title", "This is a warning message");
dlg->setCallback([](int result) { cout << "Dialog result: " << result << endl; });
});
b = new Button(tools, "Ask");
b->setCallback([&] {
auto dlg = new MessageDialog(this, MessageDialog::Type::Warning, "Title", "This is a question message", "Yes", "No", true);
dlg->setCallback([](int result) { cout << "Dialog result: " << result << endl; });
});
std::vector<std::pair<int, std::string>>
icons = loadImageDirectory(mNVGContext, "icons");
new Label(window, "Image panel & scroll panel", "sans-bold");
PopupButton *imagePanelBtn = new PopupButton(window, "Image Panel");
imagePanelBtn->setIcon(ENTYPO_ICON_FOLDER);
popup = imagePanelBtn->popup();
VScrollPanel *vscroll = new VScrollPanel(popup);
ImagePanel *imgPanel = new ImagePanel(vscroll);
imgPanel->setImages(icons);
popup->setFixedSize(Vector2i(245, 150));
auto img_window = new Window(this, "Selected image");
img_window->setPosition(Vector2i(710, 15));
img_window->setLayout(new GroupLayout());
auto img = new ImageView(img_window);
img->setPolicy(ImageView::SizePolicy::Expand);
img->setFixedSize(Vector2i(275, 275));
img->setImage(icons[0].first);
imgPanel->setCallback([&, img, imgPanel, imagePanelBtn](int i) {
img->setImage(imgPanel->images()[i].first); cout << "Selected item " << i << endl;
});
auto img_cb = new CheckBox(img_window, "Expand",
[img](bool state) { if (state) img->setPolicy(ImageView::SizePolicy::Expand);
else img->setPolicy(ImageView::SizePolicy::Fixed); });
img_cb->setChecked(true);
new Label(window, "File dialog", "sans-bold");
tools = new Widget(window);
tools->setLayout(new BoxLayout(Orientation::Horizontal,
Alignment::Middle, 0, 6));
b = new Button(tools, "Open");
b->setCallback([&] {
cout << "File dialog result: " << file_dialog(
{ {"png", "Portable Network Graphics"}, {"txt", "Text file"} }, false) << endl;
});
b = new Button(tools, "Save");
b->setCallback([&] {
cout << "File dialog result: " << file_dialog(
{ {"png", "Portable Network Graphics"}, {"txt", "Text file"} }, true) << endl;
});
new Label(window, "Combo box", "sans-bold");
new ComboBox(window, { "Combo box item 1", "Combo box item 2", "Combo box item 3"});
new Label(window, "Check box", "sans-bold");
CheckBox *cb = new CheckBox(window, "Flag 1",
[](bool state) { cout << "Check box 1 state: " << state << endl; }
);
cb->setChecked(true);
cb = new CheckBox(window, "Flag 2",
[](bool state) { cout << "Check box 2 state: " << state << endl; }
);
new Label(window, "Progress bar", "sans-bold");
mProgress = new ProgressBar(window);
new Label(window, "Slider and text box", "sans-bold");
Widget *panel = new Widget(window);
panel->setLayout(new BoxLayout(Orientation::Horizontal,
Alignment::Middle, 0, 20));
Slider *slider = new Slider(panel);
slider->setValue(0.5f);
slider->setFixedWidth(80);
TextBox *textBox = new TextBox(panel);
textBox->setFixedSize(Vector2i(60, 25));
textBox->setValue("50");
textBox->setUnits("%");
slider->setCallback([textBox](float value) {
textBox->setValue(std::to_string((int) (value * 100)));
});
slider->setFinalCallback([&](float value) {
cout << "Final slider value: " << (int) (value * 100) << endl;
});
textBox->setFixedSize(Vector2i(60,25));
textBox->setFontSize(20);
textBox->setAlignment(TextBox::Alignment::Right);
window = new Window(this, "Misc. widgets");
window->setPosition(Vector2i(425,15));
window->setLayout(new GroupLayout());
TabWidget* tabWidget = window->add<TabWidget>();
Widget* layer = tabWidget->createTab("Color Wheel");
layer->setLayout(new GroupLayout());
// Use overloaded variadic add to fill the tab widget with Different tabs.
layer->add<Label>("Color wheel widget", "sans-bold");
layer->add<ColorWheel>();
layer = tabWidget->createTab("Function Graph");
layer->setLayout(new GroupLayout());
layer->add<Label>("Function graph widget", "sans-bold");
Graph *graph = layer->add<Graph>("Some Function");
graph->setHeader("E = 2.35e-3");
graph->setFooter("Iteration 89");
VectorXf &func = graph->values();
func.resize(100);
for (int i = 0; i < 100; ++i)
func[i] = 0.5f * (0.5f * std::sin(i / 10.f) +
0.5f * std::cos(i / 23.f) + 1);
// Dummy tab used to represent the last tab button.
tabWidget->createTab("+");
// A simple counter.
int counter = 1;
tabWidget->setCallback([tabWidget, this, counter] (int index) mutable {
if (index == (tabWidget->tabCount()-1)) {
// When the "+" tab has been clicked, simply add a new tab.
string tabName = "Dynamic " + to_string(counter);
Widget* layerDyn = tabWidget->createTab(index, tabName);
layerDyn->setLayout(new GroupLayout());
layerDyn->add<Label>("Function graph widget", "sans-bold");
Graph *graphDyn = layerDyn->add<Graph>("Dynamic function");
graphDyn->setHeader("E = 2.35e-3");
graphDyn->setFooter("Iteration " + to_string(index*counter));
VectorXf &funcDyn = graphDyn->values();
funcDyn.resize(100);
for (int i = 0; i < 100; ++i)
funcDyn[i] = 0.5f *
std::abs((0.5f * std::sin(i / 10.f + counter) +
0.5f * std::cos(i / 23.f + 1 + counter)));
++counter;
// We must invoke perform layout from the screen instance to keep everything in order.
// This is essential when creating tabs dynamically.
performLayout();
// Ensure that the newly added header is visible on screen
tabWidget->ensureTabVisible(index);
}
});
tabWidget->setActiveTab(0);
// A button to go back to the first tab and scroll the window.
panel = window->add<Widget>();
panel->add<Label>("Jump to tab: ");
panel->setLayout(new BoxLayout(Orientation::Horizontal,
Alignment::Middle, 0, 6));
auto ib = panel->add<IntBox<int>>();
ib->setEditable(true);
b = panel->add<Button>("", ENTYPO_ICON_FORWARD);
b->setFixedSize(Vector2i(22, 22));
ib->setFixedHeight(22);
b->setCallback([tabWidget, ib] {
int value = ib->value();
if (value >= 0 && value < tabWidget->tabCount()) {
tabWidget->setActiveTab(value);
tabWidget->ensureTabVisible(value);
}
});
window = new Window(this, "Grid of small widgets");
window->setPosition(Vector2i(425, 300));
GridLayout *layout =
new GridLayout(Orientation::Horizontal, 2,
Alignment::Middle, 15, 5);
layout->setColAlignment(
{ Alignment::Maximum, Alignment::Fill });
layout->setSpacing(0, 10);
window->setLayout(layout);
{
new Label(window, "Floating point :", "sans-bold");
textBox = new TextBox(window);
textBox->setEditable(true);
textBox->setFixedSize(Vector2i(100, 20));
textBox->setValue("50");
textBox->setUnits("GiB");
textBox->setDefaultValue("0.0");
textBox->setFontSize(16);
textBox->setFormat("[-]?[0-9]*\\.?[0-9]+");
}
{
new Label(window, "Positive integer :", "sans-bold");
auto intBox = new IntBox<int>(window);
intBox->setEditable(true);
intBox->setFixedSize(Vector2i(100, 20));
intBox->setValue(50);
intBox->setUnits("Mhz");
intBox->setDefaultValue("0");
intBox->setFontSize(16);
intBox->setFormat("[1-9][0-9]*");
intBox->setSpinnable(true);
intBox->setMinValue(1);
intBox->setValueIncrement(2);
}
{
new Label(window, "Checkbox :", "sans-bold");
cb = new CheckBox(window, "Check me");
cb->setFontSize(16);
cb->setChecked(true);
}
new Label(window, "Combo box :", "sans-bold");
ComboBox *cobo =
new ComboBox(window, { "Item 1", "Item 2", "Item 3" });
cobo->setFontSize(16);
cobo->setFixedSize(Vector2i(100,20));
new Label(window, "Color button :", "sans-bold");
popupBtn = new PopupButton(window, "", 0);
popupBtn->setBackgroundColor(Color(255, 120, 0, 255));
popupBtn->setFontSize(16);
popupBtn->setFixedSize(Vector2i(100, 20));
popup = popupBtn->popup();
popup->setLayout(new GroupLayout());
ColorWheel *colorwheel = new ColorWheel(popup);
colorwheel->setColor(popupBtn->backgroundColor());
Button *colorBtn = new Button(popup, "Pick");
colorBtn->setFixedSize(Vector2i(100, 25));
Color c = colorwheel->color();
colorBtn->setBackgroundColor(c);
colorwheel->setCallback([colorBtn](const Color &value) {
colorBtn->setBackgroundColor(value);
});
colorBtn->setChangeCallback([colorBtn, popupBtn](bool pushed) {
if (pushed) {
popupBtn->setBackgroundColor(colorBtn->backgroundColor());
popupBtn->setPushed(false);
}
});
performLayout();
/* All NanoGUI widgets are initialized at this point. Now
create an OpenGL shader to draw the main window contents.
NanoGUI comes with a simple Eigen-based wrapper around OpenGL 3,
which eliminates most of the tedious and error-prone shader and
buffer object management.
*/
mShader.init(
/* An identifying name */
"a_simple_shader",
/* Vertex shader */
"#version 330\n"
"uniform mat4 modelViewProj;\n"
"in vec3 position;\n"
"void main() {\n"
" gl_Position = modelViewProj * vec4(position, 1.0);\n"
"}",
/* Fragment shader */
"#version 330\n"
"out vec4 color;\n"
"uniform float intensity;\n"
"void main() {\n"
" color = vec4(vec3(intensity), 1.0);\n"
"}"
);
MatrixXu indices(3, 2); /* Draw 2 triangles */
indices.col(0) << 0, 1, 2;
indices.col(1) << 2, 3, 0;
MatrixXf positions(3, 4);
positions.col(0) << -1, -1, 0;
positions.col(1) << 1, -1, 0;
positions.col(2) << 1, 1, 0;
positions.col(3) << -1, 1, 0;
mShader.bind();
mShader.uploadIndices(indices);
mShader.uploadAttrib("position", positions);
mShader.setUniform("intensity", 0.5f);
}
ExampleApplication() : nanogui::Screen(Eigen::Vector2i(1024, 768), "NanoGUI Test") {
using namespace nanogui;
Window *window = new Window(this, "Button demo");
window->setPosition(Vector2i(15, 15));
window->setLayout(new GroupLayout());
/* No need to store a pointer, the data structure will be automatically
freed when the parent window is deleted */
new Label(window, "Push buttons", "sans-bold");
Button *b = new Button(window, "Plain button");
b->setCallback([] { cout << "pushed!" << endl; });
b = new Button(window, "Styled", ENTYPO_ICON_ROCKET);
b->setBackgroundColor(Color(0, 0, 255, 25));
b->setCallback([] { cout << "pushed!" << endl; });
new Label(window, "Toggle buttons", "sans-bold");
b = new Button(window, "Toggle me");
b->setFlags(Button::ToggleButton);
b->setChangeCallback([](bool state) { cout << "Toggle button state: " << state << endl; });
new Label(window, "Radio buttons", "sans-bold");
b = new Button(window, "Radio button 1");
b->setFlags(Button::RadioButton);
b = new Button(window, "Radio button 2");
b->setFlags(Button::RadioButton);
new Label(window, "A tool palette", "sans-bold");
Widget *tools = new Widget(window);
tools->setLayout(new BoxLayout(Orientation::Horizontal,
Alignment::Middle, 0, 6));
b = new ToolButton(tools, ENTYPO_ICON_CLOUD);
b = new ToolButton(tools, ENTYPO_ICON_FF);
b = new ToolButton(tools, ENTYPO_ICON_COMPASS);
b = new ToolButton(tools, ENTYPO_ICON_INSTALL);
new Label(window, "Popup buttons", "sans-bold");
PopupButton *popupBtn = new PopupButton(window, "Popup", ENTYPO_ICON_EXPORT);
Popup *popup = popupBtn->popup();
popup->setLayout(new GroupLayout());
new Label(popup, "Arbitrary widgets can be placed here");
new CheckBox(popup, "A check box");
popupBtn = new PopupButton(popup, "Recursive popup", ENTYPO_ICON_FLASH);
popup = popupBtn->popup();
popup->setLayout(new GroupLayout());
new CheckBox(popup, "Another check box");
window = new Window(this, "Basic widgets");
window->setPosition(Vector2i(200, 15));
window->setLayout(new GroupLayout());
new Label(window, "Message dialog", "sans-bold");
tools = new Widget(window);
tools->setLayout(new BoxLayout(Orientation::Horizontal,
Alignment::Middle, 0, 6));
b = new Button(tools, "Info");
b->setCallback([&] {
auto dlg = new MessageDialog(this, MessageDialog::Type::Information, "Title", "This is an information message");
dlg->setCallback([](int result) { cout << "Dialog result: " << result << endl; });
});
b = new Button(tools, "Warn");
b->setCallback([&] {
auto dlg = new MessageDialog(this, MessageDialog::Type::Warning, "Title", "This is a warning message");
dlg->setCallback([](int result) { cout << "Dialog result: " << result << endl; });
});
b = new Button(tools, "Ask");
b->setCallback([&] {
auto dlg = new MessageDialog(this, MessageDialog::Type::Warning, "Title", "This is a question message", "Yes", "No", true);
dlg->setCallback([](int result) { cout << "Dialog result: " << result << endl; });
});
std::vector<std::pair<int, std::string>>
icons = loadImageDirectory(mNVGContext, "icons");
new Label(window, "Image panel & scroll panel", "sans-bold");
PopupButton *imagePanelBtn = new PopupButton(window, "Image Panel");
imagePanelBtn->setIcon(ENTYPO_ICON_FOLDER);
popup = imagePanelBtn->popup();
VScrollPanel *vscroll = new VScrollPanel(popup);
ImagePanel *imgPanel = new ImagePanel(vscroll);
imgPanel->setImages(icons);
popup->setFixedSize(Vector2i(245, 150));
auto img_window = new Window(this, "Selected image");
img_window->setPosition(Vector2i(675, 15));
img_window->setLayout(new GroupLayout());
auto img = new ImageView(img_window);
img->setPolicy(ImageView::SizePolicy::Expand);
img->setFixedSize(Vector2i(300, 300));
img->setImage(icons[0].first);
imgPanel->setCallback([&, img, imgPanel, imagePanelBtn](int i) {
img->setImage(imgPanel->images()[i].first); cout << "Selected item " << i << endl;
});
auto img_cb = new CheckBox(img_window, "Expand",
[img](bool state) { if (state) img->setPolicy(ImageView::SizePolicy::Expand);
else img->setPolicy(ImageView::SizePolicy::Fixed); });
img_cb->setChecked(true);
new Label(window, "File dialog", "sans-bold");
tools = new Widget(window);
tools->setLayout(new BoxLayout(Orientation::Horizontal,
Alignment::Middle, 0, 6));
b = new Button(tools, "Open");
b->setCallback([&] {
cout << "File dialog result: " << file_dialog(
{ {"png", "Portable Network Graphics"}, {"txt", "Text file"} }, false) << endl;
});
b = new Button(tools, "Save");
b->setCallback([&] {
cout << "File dialog result: " << file_dialog(
{ {"png", "Portable Network Graphics"}, {"txt", "Text file"} }, true) << endl;
});
new Label(window, "Combo box", "sans-bold");
new ComboBox(window, { "Combo box item 1", "Combo box item 2", "Combo box item 3"});
new Label(window, "Check box", "sans-bold");
CheckBox *cb = new CheckBox(window, "Flag 1",
[](bool state) { cout << "Check box 1 state: " << state << endl; }
);
cb->setChecked(true);
cb = new CheckBox(window, "Flag 2",
[](bool state) { cout << "Check box 2 state: " << state << endl; }
);
new Label(window, "Progress bar", "sans-bold");
mProgress = new ProgressBar(window);
new Label(window, "Slider and text box", "sans-bold");
Widget *panel = new Widget(window);
panel->setLayout(new BoxLayout(Orientation::Horizontal,
Alignment::Middle, 0, 20));
Slider *slider = new Slider(panel);
slider->setValue(0.5f);
slider->setFixedWidth(80);
TextBox *textBox = new TextBox(panel);
textBox->setFixedSize(Vector2i(60, 25));
textBox->setValue("50");
textBox->setUnits("%");
slider->setCallback([textBox](float value) {
textBox->setValue(std::to_string((int) (value * 100)));
});
slider->setFinalCallback([&](float value) {
cout << "Final slider value: " << (int) (value * 100) << endl;
});
textBox->setFixedSize(Vector2i(60,25));
textBox->setFontSize(20);
textBox->setAlignment(TextBox::Alignment::Right);
window = new Window(this,"Misc. widgets");
window->setPosition(Vector2i(425,15));
window->setLayout(new GroupLayout());
new Label(window,"Color wheel","sans-bold");
new ColorWheel(window);
new Label(window, "Function graph", "sans-bold");
Graph *graph = new Graph(window, "Some function");
graph->setHeader("E = 2.35e-3");
graph->setFooter("Iteration 89");
VectorXf &func = graph->values();
func.resize(100);
for (int i = 0; i < 100; ++i)
func[i] = 0.5f * (0.5f * std::sin(i / 10.f) +
0.5f * std::cos(i / 23.f) + 1);
window = new Window(this, "Grid of small widgets");
window->setPosition(Vector2i(425, 288));
GridLayout *layout =
new GridLayout(Orientation::Horizontal, 2,
Alignment::Middle, 15, 5);
layout->setColAlignment(
{ Alignment::Maximum, Alignment::Fill });
layout->setSpacing(0, 10);
window->setLayout(layout);
{
new Label(window, "Floating point :", "sans-bold");
textBox = new TextBox(window);
textBox->setEditable(true);
textBox->setFixedSize(Vector2i(100, 20));
textBox->setValue("50");
textBox->setUnits("GiB");
textBox->setDefaultValue("0.0");
textBox->setFontSize(16);
textBox->setFormat("[-]?[0-9]*\\.?[0-9]+");
}
{
new Label(window, "Positive integer :", "sans-bold");
textBox = new TextBox(window);
textBox->setEditable(true);
textBox->setFixedSize(Vector2i(100, 20));
textBox->setValue("50");
textBox->setUnits("Mhz");
textBox->setDefaultValue("0.0");
textBox->setFontSize(16);
textBox->setFormat("[1-9][0-9]*");
}
{
new Label(window, "Checkbox :", "sans-bold");
cb = new CheckBox(window, "Check me");
cb->setFontSize(16);
cb->setChecked(true);
}
new Label(window, "Combo box :", "sans-bold");
ComboBox *cobo =
new ComboBox(window, { "Item 1", "Item 2", "Item 3" });
cobo->setFontSize(16);
cobo->setFixedSize(Vector2i(100,20));
new Label(window, "Color button :", "sans-bold");
popupBtn = new PopupButton(window, "", 0);
popupBtn->setBackgroundColor(Color(255, 120, 0, 255));
popupBtn->setFontSize(16);
popupBtn->setFixedSize(Vector2i(100, 20));
popup = popupBtn->popup();
popup->setLayout(new GroupLayout());
ColorWheel *colorwheel = new ColorWheel(popup);
colorwheel->setColor(popupBtn->backgroundColor());
Button *colorBtn = new Button(popup, "Pick");
colorBtn->setFixedSize(Vector2i(100, 25));
Color c = colorwheel->color();
colorBtn->setBackgroundColor(c);
colorwheel->setCallback([colorBtn](const Color &value) {
colorBtn->setBackgroundColor(value);
});
colorBtn->setChangeCallback([colorBtn, popupBtn](bool pushed) {
if (pushed) {
popupBtn->setBackgroundColor(colorBtn->backgroundColor());
popupBtn->setPushed(false);
}
});
performLayout(mNVGContext);
/* All NanoGUI widgets are initialized at this point. Now
create an OpenGL shader to draw the main window contents.
NanoGUI comes with a simple Eigen-based wrapper around OpenGL 3,
which eliminates most of the tedious and error-prone shader and
buffer object management.
*/
mShader.init(
/* An identifying name */
"a_simple_shader",
/* Vertex shader */
"#version 330\n"
"uniform mat4 modelViewProj;\n"
"in vec4 vertex;\n"
"in vec3 color;\n"
"out vec3 varying_color;\n"
"void main() {\n"
" gl_Position = modelViewProj * vertex;\n"
" varying_color = color;\n"
"}",
/* Fragment shader */
"#version 330\n"
"in vec3 varying_color;\n"
"out vec4 frag_color;\n"
"uniform float intensity;\n"
"void main() {\n"
" frag_color = vec4(intensity * varying_color, 1.0);\n"
"}"
);
mShader.registerAttribs({
{"color", "vec3"}
});
mShader.registerUniforms({
{"modelViewProj", "mat4"},
{"intensity", "float"}
});
}
void View::create (WindowRef & ciWindow, const fs::path & assetFolder)
{
try
{
initGraph (&fps, GRAPH_RENDER_FPS, "Frame Time");
initGraph (&cpuGraph, GRAPH_RENDER_MS, "CPU Time");
setSize (ciWindow->getSize());
nanogui::Window * window = new nanogui::Window (this, "Button demo");
window->setPosition (ivec2 (15, 15));
window->setLayout (new GroupLayout());
/* No need to store a pointer, the data structure will be automatically
freed when the parent window is deleted */
new Label (window, "Push buttons", "sans-bold");
Button * b = new Button (window, "Plain button");
b->setCallback ([] { cout << "pushed!" << endl; });
b = new Button (window, "Styled", ENTYPO_ICON_ROCKET);
b->setBackgroundColor (Colour (0, 0, 255, 25));
b->setCallback ([] { cout << "pushed!" << endl; });
new Label (window, "Toggle buttons", "sans-bold");
b = new Button (window, "Toggle me");
b->setFlags (Button::ToggleButton);
b->setChangeCallback ([] (bool state)
{
cout << "Toggle button state: " << state << endl;
});
new Label (window, "Radio buttons", "sans-bold");
b = new Button (window, "Radio button 1");
b->setFlags (Button::RadioButton);
b = new Button (window, "Radio button 2");
b->setFlags (Button::RadioButton);
new Label (window, "A tool palette", "sans-bold");
Widget * tools = new Widget (window);
tools->setLayout (new BoxLayout (Orientation::Horizontal,
Alignment::Middle, 0, 6));
b = new ToolButton (tools, ENTYPO_ICON_CLOUD);
b = new ToolButton (tools, ENTYPO_ICON_FF);
b = new ToolButton (tools, ENTYPO_ICON_COMPASS);
b = new ToolButton (tools, ENTYPO_ICON_INSTALL);
new Label (window, "Popup buttons", "sans-bold");
PopupButton * popupBtn = new PopupButton (window, "Popup", ENTYPO_ICON_EXPORT);
Popup * popup = popupBtn->popup();
popup->setLayout (new GroupLayout());
new Label (popup, "Arbitrary widgets can be placed here");
new CheckBox (popup, "A check box");
popupBtn = new PopupButton (popup, "Recursive popup", ENTYPO_ICON_FLASH);
popup = popupBtn->popup();
popup->setLayout (new GroupLayout());
new CheckBox (popup, "Another check box");
window = new nanogui::Window (this, "Basic widgets");
window->setPosition (ivec2 (200, 15));
window->setLayout (new GroupLayout());
new Label (window, "Message dialog", "sans-bold");
tools = new Widget (window);
tools->setLayout (new BoxLayout (Orientation::Horizontal,
Alignment::Middle, 0, 6));
b = new Button (tools, "Info");
b->setCallback ([&]
{
auto dlg = new MessageDialog (this, MessageDialog::Type::Information, "Title", "This is an information message");
dlg->setCallback ([] (int result)
{
cout << "Dialog result: " << result << endl;
});
});
b = new Button (tools, "Warn");
b->setCallback ([&]
{
auto dlg = new MessageDialog (this, MessageDialog::Type::Warning, "Title", "This is a warning message");
dlg->setCallback ([] (int result)
{
cout << "Dialog result: " << result << endl;
});
});
b = new Button (tools, "Ask");
b->setCallback ([&]
{
auto dlg = new MessageDialog (this, MessageDialog::Type::Warning, "Title", "This is a question message", "Yes", "No", true);
dlg->setCallback ([] (int result)
{
cout << "Dialog result: " << result << endl;
});
});
std::string iconPath = assetFolder.string();
iconPath += "/icons";
std::vector<std::pair<int, std::string>> icons = NanoUtil::loadImageDirectory (getContext(), iconPath);
new Label (window, "Image panel & scroll panel", "sans-bold");
PopupButton * imagePanelBtn = new PopupButton (window, "Image Panel");
imagePanelBtn->setIcon (ENTYPO_ICON_FOLDER);
popup = imagePanelBtn->popup();
VScrollPanel * vscroll = new VScrollPanel (popup);
ImagePanel * imgPanel = new ImagePanel (vscroll);
imgPanel->setImages (icons);
popup->setFixedSize (ivec2 (245, 150));
new Label (window, "Selected image", "sans-bold");
auto img = new ImageView (window);
img->setFixedSize (ivec2 (40, 40));
img->setImage (icons[0].first);
imgPanel->setCallback ([ &, img, imgPanel, imagePanelBtn] (int i)
{
img->setImage (imgPanel->images()[i].first);
cout << "Selected item " << i << endl;
});
new Label (window, "Combo box", "sans-bold");
new ComboBox (window, { "Combo box item 1", "Combo box item 2", "Combo box item 3" });
new Label (window, "Check box", "sans-bold");
CheckBox * cb = new CheckBox (window, "Flag 1",
[] (bool state)
{
cout << "Check box 1 state: " << state << endl;
}
);
cb->setChecked (true);
cb = new CheckBox (window, "Flag 2",
[] (bool state)
{
cout << "Check box 2 state: " << state << endl;
}
);
new Label (window, "Progress bar", "sans-bold");
mProgress = new ProgressBar (window);
new Label (window, "Slider and text box", "sans-bold");
Widget * panel = new Widget (window);
panel->setLayout (new BoxLayout (Orientation::Horizontal,
Alignment::Middle, 0, 20));
Slider * slider = new Slider (panel);
slider->setValue (0.5f);
slider->setFixedWidth (80);
TxtBox * textBox = new TxtBox (panel);
textBox->setFixedSize (ivec2 (60, 25));
textBox->setValue ("50");
textBox->setUnits ("%");
slider->setCallback ([textBox] (float value)
{
textBox->setValue (std::to_string ((int) (value * 100)));
});
slider->setFinalCallback ([&] (float value)
{
cout << "Final slider value: " << (int) (value * 100) << endl;
});
textBox->setFixedSize (ivec2 (60, 25));
textBox->setFontSize (20);
textBox->setAlignment (TxtBox::Alignment::Right);
window = new nanogui::Window(this, "Misc. widgets");
window->setPosition(ivec2(425, 15));
window->setLayout(new GroupLayout());
new Label(window, "Color wheel", "sans-bold");
new ColorWheel(window);
new Label(window, "Function graph", "sans-bold");
Graph *graph = new Graph(window, "Some function");
graph->setHeader("E = 2.35e-3");
graph->setFooter("Iteration 89");
std::vector<float> &func = graph->values();
func.resize(100);
for (int i = 0; i < 100; ++i)
func[i] = 0.5f * (0.5f * std::sin(i / 10.f) +
0.5f * std::cos(i / 23.f) + 1);
window = new nanogui::Window(this, "Grid of small widgets");
window->setPosition(ivec2(425, 288));
GridLayout *layout =
new GridLayout(Orientation::Horizontal, 2,
Alignment::Middle, 15, 5);
layout->setColAlignment(
{ Alignment::Maximum, Alignment::Fill });
layout->setSpacing(0, 10);
window->setLayout(layout);
{
new Label(window, "Floating point :", "sans-bold");
textBox = new TxtBox(window);
textBox->setEditable(true);
textBox->setFixedSize(ivec2(100, 20));
textBox->setValue("50");
textBox->setUnits("GiB");
textBox->setDefaultValue("0.0");
textBox->setFontSize(16);
textBox->setFormat("[-]?[0-9]*\\.?[0-9]+");
}
{
new Label(window, "Positive integer :", "sans-bold");
textBox = new TxtBox(window);
textBox->setEditable(true);
textBox->setFixedSize(ivec2(100, 20));
textBox->setValue("50");
textBox->setUnits("Mhz");
textBox->setDefaultValue("0.0");
textBox->setFontSize(16);
textBox->setFormat("[1-9][0-9]*");
}
{
new Label(window, "Checkbox :", "sans-bold");
cb = new CheckBox(window, "Check me");
cb->setFontSize(16);
cb->setChecked(true);
}
new Label(window, "Combo box :", "sans-bold");
ComboBox *cobo =
new ComboBox(window, { "Item 1", "Item 2", "Item 3" });
cobo->setFontSize(16);
cobo->setFixedSize(ivec2(100, 20));
new Label(window, "Color button :", "sans-bold");
popupBtn = new PopupButton(window, "", 0);
popupBtn->setBackgroundColor(Colour(255, 120, 0, 255));
popupBtn->setFontSize(16);
popupBtn->setFixedSize(ivec2(100, 20));
popup = popupBtn->popup();
popup->setLayout(new GroupLayout());
ColorWheel *colorwheel = new ColorWheel(popup);
colorwheel->setColor(popupBtn->backgroundColor());
Button *colorBtn = new Button(popup, "Pick");
colorBtn->setFixedSize(ivec2(100, 25));
Colour c = colorwheel->color();
colorBtn->setBackgroundColor(c);
colorwheel->setCallback([colorBtn](const Colour &value) {
colorBtn->setBackgroundColor(value);
});
colorBtn->setChangeCallback([colorBtn, popupBtn](bool pushed) {
if (pushed) {
popupBtn->setBackgroundColor(colorBtn->backgroundColor());
popupBtn->setPushed(false);
}
});
performLayout (mNVGContext);
}
catch (const std::exception & e)
{
std::cout << e.what() << std::endl;
}
}