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demo.cr
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demo.cr
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# Based on https://github.com/ocornut/imgui/blob/v1.90.6/imgui_demo.cpp
require "./imgui"
require "./util"
module ImGuiDemo
include ImGui::TopLevel
def self.help_marker(desc)
ImGui.text_disabled("(?)")
if ImGui.begin_item_tooltip
ImGui.with_text_wrap_pos(ImGui.get_font_size * 35.0f32) do
ImGui.text_unformatted(desc)
end
ImGui.end_tooltip
end
end
def self.demo_marker(section)
end
ImGui.pointer_wrapper def self.show_demo_window(p_open = Pointer(Bool).null)
assert(ImGui.get_current_context != nil && "Missing Dear ImGui context. Refer to examples app!")
static show_app_main_menu_bar = false
static show_app_console = false
static show_app_custom_rendering = false
static show_app_documents = false
static show_app_log = false
static show_app_layout = false
static show_app_property_editor = false
static show_app_simple_overlay = false
static show_app_auto_resize = false
static show_app_constrained_resize = false
static show_app_fullscreen = false
static show_app_long_text = false
static show_app_window_titles = false
if show_app_main_menu_bar.val
show_example_app_main_menu_bar
end
if show_app_documents.val
show_example_app_documents(pointerof(show_app_documents.val))
end
if show_app_console.val
show_example_app_console(pointerof(show_app_console.val))
end
if show_app_custom_rendering.val
show_example_app_custom_rendering(pointerof(show_app_custom_rendering.val))
end
if show_app_log.val
show_example_app_log(pointerof(show_app_log.val))
end
if show_app_layout.val
show_example_app_layout(pointerof(show_app_layout.val))
end
if show_app_property_editor.val
show_example_app_property_editor(pointerof(show_app_property_editor.val))
end
if show_app_simple_overlay.val
show_example_app_simple_overlay(pointerof(show_app_simple_overlay.val))
end
if show_app_auto_resize.val
show_example_app_auto_resize(pointerof(show_app_auto_resize.val))
end
if show_app_constrained_resize.val
show_example_app_constrained_resize(pointerof(show_app_constrained_resize.val))
end
if show_app_fullscreen.val
show_example_app_fullscreen(pointerof(show_app_fullscreen.val))
end
if show_app_long_text.val
show_example_app_long_text(pointerof(show_app_long_text.val))
end
if show_app_window_titles.val
show_example_app_window_titles(pointerof(show_app_window_titles.val))
end
static show_tool_metrics = false
static show_tool_debug_log = false
static show_tool_id_stack_tool = false
static show_tool_style_editor = false
static show_tool_about = false
if show_tool_metrics.val
ImGui.show_metrics_window(pointerof(show_tool_metrics.val))
end
if show_tool_debug_log.val
ImGui.show_debug_log_window(pointerof(show_tool_debug_log.val))
end
if show_tool_id_stack_tool.val
ImGui.show_id_stack_tool_window(pointerof(show_tool_id_stack_tool.val))
end
if show_tool_style_editor.val
ImGui.window("crystal-imgui Style Editor", pointerof(show_tool_style_editor.val)) do
show_style_editor
end
end
if show_tool_about.val
show_about_window(pointerof(show_tool_about.val))
end
static no_titlebar = false
static no_scrollbar = false
static no_menu = false
static no_move = false
static no_resize = false
static no_collapse = false
static no_close = false
static no_nav = false
static no_background = false
static no_bring_to_front = false
static unsaved_document = false
window_flags = ImGuiWindowFlags::None
if no_titlebar.val
window_flags |= ImGuiWindowFlags::NoTitleBar
end
if no_scrollbar.val
window_flags |= ImGuiWindowFlags::NoScrollbar
end
if !no_menu.val
window_flags |= ImGuiWindowFlags::MenuBar
end
if no_move.val
window_flags |= ImGuiWindowFlags::NoMove
end
if no_resize.val
window_flags |= ImGuiWindowFlags::NoResize
end
if no_collapse.val
window_flags |= ImGuiWindowFlags::NoCollapse
end
if no_nav.val
window_flags |= ImGuiWindowFlags::NoNav
end
if no_background.val
window_flags |= ImGuiWindowFlags::NoBackground
end
if no_bring_to_front.val
window_flags |= ImGuiWindowFlags::NoBringToFrontOnFocus
end
if unsaved_document.val
window_flags |= ImGuiWindowFlags::UnsavedDocument
end
if no_close.val
p_open = Pointer(Bool).null
end
main_viewport = ImGui.get_main_viewport
ImGui.set_next_window_pos(ImVec2.new(20, main_viewport.work_pos.y + 20), ImGuiCond::FirstUseEver)
ImGui.set_next_window_size(ImVec2.new(550, 680), ImGuiCond::FirstUseEver)
if !ImGui.begin("crystal-imgui Demo", p_open, window_flags)
ImGui.end
return
end
ImGui.with_item_width(ImGui.get_font_size * -12) do
ImGui.menu_bar do
ImGui.menu("Menu") do
demo_marker("Menu/File")
show_example_menu_file
end
ImGui.menu("Examples") do
demo_marker("Menu/Examples")
ImGui.menu_item("Main menu bar", "", pointerof(show_app_main_menu_bar.val))
ImGui.separator_text("Mini apps")
ImGui.menu_item("Console", "", pointerof(show_app_console.val))
ImGui.menu_item("Custom rendering", "", pointerof(show_app_custom_rendering.val))
ImGui.menu_item("Documents", "", pointerof(show_app_documents.val))
ImGui.menu_item("Log", "", pointerof(show_app_log.val))
ImGui.menu_item("Property editor", "", pointerof(show_app_property_editor.val))
ImGui.menu_item("Simple layout", "", pointerof(show_app_layout.val))
ImGui.menu_item("Simple overlay", "", pointerof(show_app_simple_overlay.val))
ImGui.separator_text("Concepts")
ImGui.menu_item("Auto-resizing window", "", pointerof(show_app_auto_resize.val))
ImGui.menu_item("Constrained-resizing window", "", pointerof(show_app_constrained_resize.val))
ImGui.menu_item("Fullscreen window", "", pointerof(show_app_fullscreen.val))
ImGui.menu_item("Long text display", "", pointerof(show_app_long_text.val))
ImGui.menu_item("Manipulating window titles", "", pointerof(show_app_window_titles.val))
end
ImGui.menu("Tools") do
demo_marker("Menu/Tools")
has_debug_tools = true
ImGui.menu_item("Metrics/Debugger", "", pointerof(show_tool_metrics.val), has_debug_tools)
ImGui.menu_item("Debug Log", "", pointerof(show_tool_debug_log.val), has_debug_tools)
ImGui.menu_item("ID Stack Tool", "", pointerof(show_tool_id_stack_tool.val), has_debug_tools)
ImGui.menu_item("Style Editor", "", pointerof(show_tool_style_editor.val))
is_debugger_present = ImGui.get_io.config_debug_is_debugger_present
if ImGui.menu_item("Item Picker", "", false, has_debug_tools && is_debugger_present)
ImGui.debug_start_item_picker
end
if !is_debugger_present
ImGui.set_item_tooltip("Requires io.ConfigDebugIsDebuggerPresent=true to be set.\n\nWe otherwise disable the menu option to avoid casual users crashing the application.\n\nYou can however always access the Item Picker in Metrics->Tools.")
end
ImGui.separator
ImGui.menu_item("About Dear ImGui", "", pointerof(show_tool_about.val))
end
end
ImGui.text("dear imgui says hello! (%s) (%d)", ImGui::VERSION, ImGui::VERSION_NUM)
ImGui.spacing
demo_marker("Help")
if ImGui.collapsing_header("Help")
ImGui.separator_text("ABOUT THIS DEMO:")
ImGui.bullet_text("Sections below are demonstrating many aspects of the library.")
ImGui.bullet_text("The \"Examples\" menu above leads to more demo contents.")
ImGui.bullet_text("The \"Tools\" menu above gives access to: About Box, Style Editor,\n" +
"and Metrics/Debugger (general purpose Dear ImGui debugging tool).")
ImGui.separator_text("PROGRAMMER GUIDE:")
ImGui.bullet_text("See the ShowDemoWindow() code in src/demo.cr. <- you are here!")
ImGui.bullet_text("See comments in imgui.cpp.")
ImGui.bullet_text("See example applications in the examples/ folder.")
ImGui.bullet_text("Read the FAQ at https://www.dearimgui.com/faq/")
ImGui.bullet_text("Set 'io.ConfigFlags |= NavEnableKeyboard' for keyboard controls.")
ImGui.bullet_text("Set 'io.ConfigFlags |= NavEnableGamepad' for gamepad controls.")
ImGui.separator_text("USER GUIDE:")
show_user_guide
end
demo_marker("Configuration")
if ImGui.collapsing_header("Configuration")
io = ImGui.get_io
ImGui.tree_node("Configuration##2") do
ImGui.separator_text("General")
ImGui.checkbox_flags("io.ConfigFlags: NavEnableKeyboard", pointerof(io.config_flags), ImGuiConfigFlags::NavEnableKeyboard)
ImGui.same_line
help_marker("Enable keyboard controls.")
ImGui.checkbox_flags("io.ConfigFlags: NavEnableGamepad", pointerof(io.config_flags), ImGuiConfigFlags::NavEnableGamepad)
ImGui.same_line
help_marker("Enable gamepad controls. Require backend to set io.BackendFlags |= ImGuiBackendFlags_HasGamepad.\n\nRead instructions in imgui.cpp for details.")
ImGui.checkbox_flags("io.ConfigFlags: NavEnableSetMousePos", pointerof(io.config_flags), ImGuiConfigFlags::NavEnableSetMousePos)
ImGui.same_line
help_marker("Instruct navigation to move the mouse cursor. See comment for ImGuiConfigFlags_NavEnableSetMousePos.")
ImGui.checkbox_flags("io.ConfigFlags: NoMouse", pointerof(io.config_flags), ImGuiConfigFlags::NoMouse)
if io.config_flags.includes?(:NoMouse)
if ImGui.get_time % 0.40f32 < 0.20f32
ImGui.same_line
ImGui.text("<<PRESS SPACE TO DISABLE>>")
end
if ImGui.is_key_pressed(ImGuiKey::Space)
io.config_flags &= ~ImGuiConfigFlags::NoMouse
end
end
ImGui.checkbox_flags("io.ConfigFlags: NoMouseCursorChange", pointerof(io.config_flags), ImGuiConfigFlags::NoMouseCursorChange)
ImGui.same_line
help_marker("Instruct backend to not alter mouse cursor shape and visibility.")
ImGui.checkbox("io.ConfigInputTrickleEventQueue", pointerof(io.config_input_trickle_event_queue))
ImGui.same_line
help_marker("Enable input queue trickling: some types of events submitted during the same frame (e.g. button down + up) will be spread over multiple frames, improving interactions with low framerates.")
ImGui.checkbox("io.MouseDrawCursor", pointerof(io.mouse_draw_cursor))
ImGui.same_line
help_marker("Instruct Dear ImGui to render a mouse cursor itself. Note that a mouse cursor rendered via your application GPU rendering path will feel more laggy than hardware cursor, but will be more in sync with your other visuals.\n\nSome desktop applications may use both kinds of cursors (e.g. enable software cursor only when resizing/dragging something).")
ImGui.separator_text("Widgets")
ImGui.checkbox("io.ConfigInputTextCursorBlink", pointerof(io.config_input_text_cursor_blink))
ImGui.same_line
help_marker("Enable blinking cursor (optional as some users consider it to be distracting).")
ImGui.checkbox("io.ConfigInputTextEnterKeepActive", pointerof(io.config_input_text_enter_keep_active))
ImGui.same_line
help_marker("Pressing Enter will keep item active and select contents (single-line only).")
ImGui.checkbox("io.ConfigDragClickToInputText", pointerof(io.config_drag_click_to_input_text))
ImGui.same_line
help_marker("Enable turning DragXXX widgets into text input with a simple mouse click-release (without moving).")
ImGui.checkbox("io.ConfigWindowsResizeFromEdges", pointerof(io.config_windows_resize_from_edges))
ImGui.same_line
help_marker("Enable resizing of windows from their edges and from the lower-left corner.\nThis requires (io.BackendFlags & ImGuiBackendFlags_HasMouseCursors) because it needs mouse cursor feedback.")
ImGui.checkbox("io.ConfigWindowsMoveFromTitleBarOnly", pointerof(io.config_windows_move_from_title_bar_only))
ImGui.checkbox("io.ConfigMacOSXBehaviors", pointerof(io.config_mac_osx_behaviors))
ImGui.text("Also see Style->Rendering for rendering options.")
ImGui.separator_text("Debug")
ImGui.checkbox("io.ConfigDebugIsDebuggerPresent", pointerof(io.config_debug_is_debugger_present))
ImGui.same_line
help_marker("Enable various tools calling IM_DEBUG_BREAK().\n\nRequires a debugger being attached, otherwise IM_DEBUG_BREAK() options will appear to crash your application.")
ImGui.disabled do
ImGui.checkbox("io.ConfigDebugBeginReturnValueOnce", pointerof(io.config_debug_begin_return_value_once))
end
ImGui.same_line
help_marker("First calls to Begin()/BeginChild() will return false.\n\nTHIS OPTION IS DISABLED because it needs to be set at application boot-time to make sense. Showing the disabled option is a way to make this feature easier to discover.")
ImGui.checkbox("io.ConfigDebugBeginReturnValueLoop", pointerof(io.config_debug_begin_return_value_loop))
ImGui.same_line
help_marker("Some calls to Begin()/BeginChild() will return false.\n\nWill cycle through window depths then repeat. Windows should be flickering while running.")
ImGui.checkbox("io.ConfigDebugIgnoreFocusLoss", pointerof(io.config_debug_ignore_focus_loss))
ImGui.same_line
help_marker("Option to deactivate io.AddFocusEvent(false) handling. May facilitate interactions with a debugger when focus loss leads to clearing inputs data.")
ImGui.checkbox("io.ConfigDebugIniSettings", pointerof(io.config_debug_ini_settings))
ImGui.same_line
help_marker("Option to save .ini data with extra comments (particularly helpful for Docking, but makes saving slower).")
ImGui.spacing
end
demo_marker("Configuration/Backend Flags")
ImGui.tree_node("Backend Flags") do
help_marker(
"Those flags are set by the backends (imgui_impl_xxx files) to specify their capabilities.\n" +
"Here we expose them as read-only fields to avoid breaking interactions with your backend.")
ImGui.disabled do
ImGui.checkbox_flags("io.BackendFlags: HasGamepad", pointerof(io.backend_flags), ImGuiBackendFlags::HasGamepad)
ImGui.checkbox_flags("io.BackendFlags: HasMouseCursors", pointerof(io.backend_flags), ImGuiBackendFlags::HasMouseCursors)
ImGui.checkbox_flags("io.BackendFlags: HasSetMousePos", pointerof(io.backend_flags), ImGuiBackendFlags::HasSetMousePos)
ImGui.checkbox_flags("io.BackendFlags: RendererHasVtxOffset", pointerof(io.backend_flags), ImGuiBackendFlags::RendererHasVtxOffset)
end
ImGui.spacing
end
demo_marker("Configuration/Style")
ImGui.tree_node("Style") do
help_marker("The same contents can be accessed in 'Tools->Style Editor' or by calling the ShowStyleEditor() function.")
show_style_editor
ImGui.spacing
end
demo_marker("Configuration/Capture, Logging")
ImGui.tree_node("Capture/Logging") do
help_marker(
"The logging API redirects all text output so you can easily capture the content of " +
"a window or a block. Tree nodes can be automatically expanded.\n" +
"Try opening any of the contents below in this window and then click one of the \"Log To\" button.")
ImGui.log_buttons
help_marker("You can also call ImGui::LogText() to output directly to the log without a visual output.")
if ImGui.button("Copy \"Hello, world!\" to clipboard")
ImGui.log_to_clipboard
ImGui.log_text("Hello, world!")
ImGui.log_finish
end
end
end
demo_marker("Window options")
if ImGui.collapsing_header("Window options")
ImGui.table("split", 3) do
ImGui.table_next_column
ImGui.checkbox("No titlebar", pointerof(no_titlebar.val))
ImGui.table_next_column
ImGui.checkbox("No scrollbar", pointerof(no_scrollbar.val))
ImGui.table_next_column
ImGui.checkbox("No menu", pointerof(no_menu.val))
ImGui.table_next_column
ImGui.checkbox("No move", pointerof(no_move.val))
ImGui.table_next_column
ImGui.checkbox("No resize", pointerof(no_resize.val))
ImGui.table_next_column
ImGui.checkbox("No collapse", pointerof(no_collapse.val))
ImGui.table_next_column
ImGui.checkbox("No close", pointerof(no_close.val))
ImGui.table_next_column
ImGui.checkbox("No nav", pointerof(no_nav.val))
ImGui.table_next_column
ImGui.checkbox("No background", pointerof(no_background.val))
ImGui.table_next_column
ImGui.checkbox("No bring to front", pointerof(no_bring_to_front.val))
ImGui.table_next_column
ImGui.checkbox("Unsaved document", pointerof(unsaved_document.val))
end
end
show_demo_window_widgets
show_demo_window_layout
show_demo_window_popups
show_demo_window_tables
show_demo_window_inputs
end
ImGui.end
end
enum Element
Fire
Earth
Air
Water
end
enum Mode
Copy
Move
Swap
end
def self.show_demo_window_widgets
demo_marker("Widgets")
if !ImGui.collapsing_header("Widgets")
return
end
static disable_all = false
if disable_all.val
ImGui.begin_disabled
end
demo_marker("Widgets/Basic")
ImGui.tree_node("Basic") do
ImGui.separator_text("General")
demo_marker("Widgets/Basic/Button")
static clicked = 0
if ImGui.button("Button")
clicked.val += 1
end
if clicked.val.odd?
ImGui.same_line
ImGui.text("Thanks for clicking me!")
end
demo_marker("Widgets/Basic/Checkbox")
static check = true
ImGui.checkbox("checkbox", pointerof(check.val))
demo_marker("Widgets/Basic/RadioButton")
static e = 0
ImGui.radio_button("radio a", pointerof(e.val), 0)
ImGui.same_line
ImGui.radio_button("radio b", pointerof(e.val), 1)
ImGui.same_line
ImGui.radio_button("radio c", pointerof(e.val), 2)
demo_marker("Widgets/Basic/Buttons (Colored)")
7.times do |i|
if i > 0
ImGui.same_line
end
ImGui.with_id(i) do
ImGui.push_style_color(ImGuiCol::Button, ImGui.hsv(i / 7.0f32, 0.6f32, 0.6f32))
ImGui.push_style_color(ImGuiCol::ButtonHovered, ImGui.hsv(i / 7.0f32, 0.7f32, 0.7f32))
ImGui.push_style_color(ImGuiCol::ButtonActive, ImGui.hsv(i / 7.0f32, 0.8f32, 0.8f32))
ImGui.button("Click")
ImGui.pop_style_color(3)
end
end
ImGui.align_text_to_frame_padding
ImGui.text("Hold to repeat:")
ImGui.same_line
demo_marker("Widgets/Basic/Buttons (Repeating)")
static counter = 0
spacing = ImGui.get_style.item_inner_spacing.x
ImGui.with_button_repeat(true) do
if ImGui.arrow_button("##left", ImGuiDir::Left)
counter.val -= 1
end
ImGui.same_line(0.0f32, spacing)
if ImGui.arrow_button("##right", ImGuiDir::Right)
counter.val += 1
end
end
ImGui.same_line
ImGui.text("%d", counter.val)
ImGui.button("Tooltip")
ImGui.set_item_tooltip("I am a tooltip")
ImGui.label_text("label", "Value")
ImGui.separator_text("Inputs")
begin
demo_marker("Widgets/Basic/InputText")
static str0 = ImGui::TextBuffer.new("Hello, world!", 128)
ImGui.input_text("input text", str0.val)
ImGui.same_line
help_marker(
"USER:\n" +
"Hold SHIFT or use mouse to select text.\n" +
"CTRL+Left/Right to word jump.\n" +
"CTRL+A or Double-Click to select all.\n" +
"CTRL+X,CTRL+C,CTRL+V clipboard.\n" +
"CTRL+Z,CTRL+Y undo/redo.\n" +
"ESCAPE to revert.\n\n" +
"PROGRAMMER:\n" +
"You can use the ImGuiInputTextFlags_CallbackResize facility if you need to wire InputText() " +
"to a dynamic string type. See misc/cpp/imgui_stdlib.h for an example (this is not demonstrated " +
"in src/demo.cr).")
static str1 = ImGui::TextBuffer.new(128)
ImGui.input_text_with_hint("input text (w/ hint)", "enter text here", str1.val)
demo_marker("Widgets/Basic/InputInt, InputFloat")
static i0 = 123
ImGui.input_int("input int", pointerof(i0.val))
static f0 = 0.001f32
ImGui.input_float("input float", pointerof(f0.val), 0.01f32, 1.0f32, "%.3f")
static d0 = 999999.00000001
ImGui.input_double("input double", pointerof(d0.val), 0.01f32, 1.0f32, "%.8f")
static f1 = 1.0e10f32
ImGui.input_float("input scientific", pointerof(f1.val), 0.0f32, 0.0f32, "%e")
ImGui.same_line
help_marker(
"You can input value using the scientific notation,\n" +
" e.g. \"1e+8\" becomes \"100000000\".")
static vec4a = Slice[0.10f32, 0.20f32, 0.30f32, 0.44f32]
ImGui.input_float3("input float3", vec4a.val[...3])
end
ImGui.separator_text("Drags")
begin
demo_marker("Widgets/Basic/DragInt, DragFloat")
static i1 = 50
static i2 = 42
ImGui.drag_int("drag int", pointerof(i1.val), 1)
ImGui.same_line
help_marker(
"Click and drag to edit value.\n" +
"Hold SHIFT/ALT for faster/slower edit.\n" +
"Double-click or CTRL+click to input value.")
ImGui.drag_int("drag int 0..100", pointerof(i2.val), 1, 0, 100, "%d%%", ImGuiSliderFlags::AlwaysClamp)
static f1 = 1.00f32
static f2 = 0.0067f32
ImGui.drag_float("drag float", pointerof(f1.val), 0.005f32)
ImGui.drag_float("drag small float", pointerof(f2.val), 0.0001f32, 0.0f32, 0.0f32, "%.06f ns")
end
ImGui.separator_text("Sliders")
begin
demo_marker("Widgets/Basic/SliderInt, SliderFloat")
static i1 = 0
ImGui.slider_int("slider int", pointerof(i1.val), -1, 3)
ImGui.same_line
help_marker("CTRL+click to input value.")
static f1 = 0.123f32
static f2 = 0.0f32
ImGui.slider_float("slider float", pointerof(f1.val), 0.0f32, 1.0f32, "ratio = %.3f")
ImGui.slider_float("slider float (log)", pointerof(f2.val), -10.0f32, 10.0f32, "%.4f", ImGuiSliderFlags::Logarithmic)
demo_marker("Widgets/Basic/SliderAngle")
static angle = 0.0f32
ImGui.slider_angle("slider angle", pointerof(angle.val))
demo_marker("Widgets/Basic/Slider (enum)")
static elem = 0
ImGui.slider_int("slider enum", pointerof(elem.val), 0, Element.values.size - 1, Element.new(elem.val).to_s)
ImGui.same_line
help_marker("Using the format string parameter to display a name instead of the underlying integer.")
end
ImGui.separator_text("Selectors/Pickers")
begin
demo_marker("Widgets/Basic/ColorEdit3, ColorEdit4")
static col1 = Slice[1.0f32, 0.0f32, 0.2f32]
static col2 = Slice[0.4f32, 0.7f32, 0.0f32, 0.5f32]
ImGui.color_edit3("color 1", col1.val)
ImGui.same_line
help_marker(
"Click on the color square to open a color picker.\n" +
"Click and hold to use drag and drop.\n" +
"Right-click on the color square to show options.\n" +
"CTRL+click on individual component to input value.\n")
ImGui.color_edit4("color 2", col2.val)
end
begin
demo_marker("Widgets/Basic/Combo")
items = ["AAAA", "BBBB", "CCCC", "DDDD", "EEEE", "FFFF", "GGGG", "HHHH", "IIIIIII", "JJJJ", "KKKKKKK"]
static item_current = 0
ImGui.combo("combo", pointerof(item_current.val), items)
ImGui.same_line
help_marker(
"Using the simplified one-liner Combo API here.\n" +
"Refer to the \"Combo\" section below for an explanation of how to use the more flexible and general BeginCombo/EndCombo API.")
end
begin
demo_marker("Widgets/Basic/ListBox")
items = ["Apple", "Banana", "Cherry", "Kiwi", "Mango", "Orange", "Pineapple", "Strawberry", "Watermelon"]
static item_current = 1
ImGui.list_box("listbox", pointerof(item_current.val), items, 4)
ImGui.same_line
help_marker(
"Using the simplified one-liner ListBox API here.\n" +
"Refer to the \"List boxes\" section below for an explanation of how to use the more flexible and general BeginListBox/EndListBox API.")
end
end
demo_marker("Widgets/Tooltips")
ImGui.tree_node("Tooltips") do
ImGui.separator_text("General")
help_marker(
"Tooltip are typically created by using a IsItemHovered() + SetTooltip() sequence.\n\n" +
"We provide a helper SetItemTooltip() function to perform the two with standards flags.")
sz = ImVec2.new(-Float32::MIN_POSITIVE, 0.0f32)
ImGui.button("Basic", sz)
ImGui.set_item_tooltip("I am a tooltip")
ImGui.button("Fancy", sz)
if ImGui.begin_item_tooltip
ImGui.text("I am a fancy tooltip")
static arr = [0.6f32, 0.1f32, 1.0f32, 0.5f32, 0.92f32, 0.1f32, 0.2f32]
ImGui.plot_lines("Curve", arr.val)
ImGui.text("Sin(time) = %f", Math.sin(ImGui.get_time))
ImGui.end_tooltip
end
ImGui.separator_text("Always On")
static always_on = 0
ImGui.radio_button("Off", pointerof(always_on.val), 0)
ImGui.same_line
ImGui.radio_button("Always On (Simple)", pointerof(always_on.val), 1)
ImGui.same_line
ImGui.radio_button("Always On (Advanced)", pointerof(always_on.val), 2)
if always_on.val == 1
ImGui.set_tooltip("I am following you around.")
elsif always_on.val == 2 && ImGui.begin_tooltip
ImGui.progress_bar(Math.sin(ImGui.get_time).to_f32 * 0.5f32 + 0.5f32, ImVec2.new(ImGui.get_font_size * 25, 0.0f32))
ImGui.end_tooltip
end
ImGui.separator_text("Custom")
help_marker(
"Passing ImGuiHoveredFlags_ForTooltip to IsItemHovered() is the preferred way to standardize" +
"tooltip activation details across your application. You may however decide to use custom" +
"flags for a specific tooltip instance.")
ImGui.button("Manual", sz)
if ImGui.is_item_hovered(ImGuiHoveredFlags::ForTooltip)
ImGui.set_tooltip("I am a manually emitted tooltip.")
end
ImGui.button("DelayNone", sz)
if ImGui.is_item_hovered(ImGuiHoveredFlags::DelayNone)
ImGui.set_tooltip("I am a tooltip with no delay.")
end
ImGui.button("DelayShort", sz)
if ImGui.is_item_hovered(ImGuiHoveredFlags::DelayShort | ImGuiHoveredFlags::NoSharedDelay)
ImGui.set_tooltip("I am a tooltip with a short delay (%0.2f sec).", ImGui.get_style.hover_delay_short)
end
ImGui.button("DelayLong", sz)
if ImGui.is_item_hovered(ImGuiHoveredFlags::DelayNormal | ImGuiHoveredFlags::NoSharedDelay)
ImGui.set_tooltip("I am a tooltip with a long delay (%0.2f sec).", ImGui.get_style.hover_delay_normal)
end
ImGui.button("Stationary", sz)
if ImGui.is_item_hovered(ImGuiHoveredFlags::Stationary)
ImGui.set_tooltip("I am a tooltip requiring mouse to be stationary before activating.")
end
ImGui.disabled do
ImGui.button("Disabled item", sz)
end
if ImGui.is_item_hovered(ImGuiHoveredFlags::ForTooltip)
ImGui.set_tooltip("I am a a tooltip for a disabled item.")
end
end
demo_marker("Widgets/Tree Nodes")
ImGui.tree_node("Tree Nodes") do
demo_marker("Widgets/Tree Nodes/Basic trees")
ImGui.tree_node("Basic trees") do
5.times do |i|
if i == 0
ImGui.set_next_item_open(true, ImGuiCond::Once)
end
ImGui.with_id(i) do
ImGui.tree_node("", "Child %d", i) do
ImGui.text("blah blah")
ImGui.same_line
if ImGui.small_button("button")
end
end
end
end
end
demo_marker("Widgets/Tree Nodes/Advanced, with Selectable nodes")
ImGui.tree_node("Advanced, with Selectable nodes") do
help_marker(
"This is a more typical looking tree with selectable nodes.\n" +
"Click to select, CTRL+Click to toggle, click on arrows or double-click to open.")
static base_flags = ImGuiTreeNodeFlags::OpenOnArrow | ImGuiTreeNodeFlags::OpenOnDoubleClick | ImGuiTreeNodeFlags::SpanAvailWidth
static align_label_with_current_x_position = false
static test_drag_and_drop = false
ImGui.checkbox_flags("ImGuiTreeNodeFlags_OpenOnArrow", pointerof(base_flags.val), ImGuiTreeNodeFlags::OpenOnArrow)
ImGui.checkbox_flags("ImGuiTreeNodeFlags_OpenOnDoubleClick", pointerof(base_flags.val), ImGuiTreeNodeFlags::OpenOnDoubleClick)
ImGui.checkbox_flags("ImGuiTreeNodeFlags_SpanAvailWidth", pointerof(base_flags.val), ImGuiTreeNodeFlags::SpanAvailWidth)
ImGui.same_line
help_marker("Extend hit area to all available width instead of allowing more items to be laid out after the node.")
ImGui.checkbox_flags("ImGuiTreeNodeFlags_SpanFullWidth", pointerof(base_flags.val), ImGuiTreeNodeFlags::SpanFullWidth)
ImGui.checkbox_flags("ImGuiTreeNodeFlags_SpanTextWidth", pointerof(base_flags.val), ImGuiTreeNodeFlags::SpanTextWidth)
ImGui.same_line
help_marker("Reduce hit area to the text label and a bit of margin.")
ImGui.checkbox_flags("ImGuiTreeNodeFlags_SpanAllColumns", pointerof(base_flags.val), ImGuiTreeNodeFlags::SpanAllColumns)
ImGui.same_line
help_marker("For use in Tables only.")
ImGui.checkbox_flags("ImGuiTreeNodeFlags_AllowOverlap", pointerof(base_flags.val), ImGuiTreeNodeFlags::AllowOverlap)
ImGui.checkbox_flags("ImGuiTreeNodeFlags_Framed", pointerof(base_flags.val), ImGuiTreeNodeFlags::Framed)
ImGui.same_line
help_marker("Draw frame with background (e.g. for CollapsingHeader)")
ImGui.checkbox("Align label with current X position", pointerof(align_label_with_current_x_position.val))
ImGui.checkbox("Test tree node as drag source", pointerof(test_drag_and_drop.val))
ImGui.text("Hello!")
if align_label_with_current_x_position.val
ImGui.unindent(ImGui.get_tree_node_to_label_spacing)
end
static selection_mask = (1 << 2)
node_clicked = -1
6.times do |i|
node_flags = base_flags.val
is_selected = (selection_mask.val & (1 << i)) != 0
if is_selected
node_flags |= ImGuiTreeNodeFlags::Selected
end
if i < 3
node_open = ImGui.tree_node_ex(i, node_flags, "Selectable Node %d", i)
if ImGui.is_item_clicked && !ImGui.is_item_toggled_open
node_clicked = i
end
if test_drag_and_drop.val && ImGui.begin_drag_drop_source
ImGui.set_drag_drop_payload("_TREENODE", Pointer(Void).null, 0)
ImGui.text("This is a drag and drop source")
ImGui.end_drag_drop_source
end
if i == 2
ImGui.same_line
if ImGui.small_button("button")
end
end
if node_open
ImGui.bullet_text("Blah blah\nBlah Blah")
ImGui.tree_pop
end
else
node_flags |= ImGuiTreeNodeFlags::Leaf | ImGuiTreeNodeFlags::NoTreePushOnOpen
ImGui.tree_node_ex(i, node_flags, "Selectable Leaf %d", i)
if ImGui.is_item_clicked && !ImGui.is_item_toggled_open
node_clicked = i
end
if test_drag_and_drop.val && ImGui.begin_drag_drop_source
ImGui.set_drag_drop_payload("_TREENODE", Pointer(Void).null, 0)
ImGui.text("This is a drag and drop source")
ImGui.end_drag_drop_source
end
end
end
if node_clicked != -1
if ImGui.get_io.key_ctrl
selection_mask.val ^= (1 << node_clicked)
else
selection_mask.val = (1 << node_clicked)
end
end
if align_label_with_current_x_position.val
ImGui.indent(ImGui.get_tree_node_to_label_spacing)
end
end
end
demo_marker("Widgets/Collapsing Headers")
ImGui.tree_node("Collapsing Headers") do
static closable_group = true
ImGui.checkbox("Show 2nd header", pointerof(closable_group.val))
if ImGui.collapsing_header("Header", ImGuiTreeNodeFlags::None)
ImGui.text("IsItemHovered: %d", ImGui.is_item_hovered)
5.times do |i|
ImGui.text("Some content %d", i)
end
end
if ImGui.collapsing_header("Header with a close button", pointerof(closable_group.val))
ImGui.text("IsItemHovered: %d", ImGui.is_item_hovered)
5.times do |i|
ImGui.text("More content %d", i)
end
end
end
demo_marker("Widgets/Bullets")
ImGui.tree_node("Bullets") do
ImGui.bullet_text("Bullet point 1")
ImGui.bullet_text("Bullet point 2\nOn multiple lines")
ImGui.tree_node("Tree node") do
ImGui.bullet_text("Another bullet point")
end
ImGui.bullet
ImGui.text("Bullet point 3 (two calls)")
ImGui.bullet
ImGui.small_button("Button")
end
demo_marker("Widgets/Text")
ImGui.tree_node("Text") do
demo_marker("Widgets/Text/Colored Text")
ImGui.tree_node("Colorful Text") do
ImGui.text_colored(ImVec4.new(1.0f32, 0.0f32, 1.0f32, 1.0f32), "Pink")
ImGui.text_colored(ImVec4.new(1.0f32, 1.0f32, 0.0f32, 1.0f32), "Yellow")
ImGui.text_disabled("Disabled")
ImGui.same_line
help_marker("The TextDisabled color is stored in ImGuiStyle.")
end
demo_marker("Widgets/Text/Word Wrapping")
ImGui.tree_node("Word Wrapping") do
ImGui.text_wrapped(
"This text should automatically wrap on the edge of the window. The current implementation " +
"for text wrapping follows simple rules suitable for English and possibly other languages.")
ImGui.spacing
static wrap_width = 200.0f32
ImGui.slider_float("Wrap width", pointerof(wrap_width.val), -20, 600, "%.0f")
draw_list = ImGui.get_window_draw_list
2.times do |n|
ImGui.text("Test paragraph %d:", n)
pos = ImGui.get_cursor_screen_pos
marker_min = ImVec2.new(pos.x + wrap_width.val, pos.y)
marker_max = ImVec2.new(pos.x + wrap_width.val + 10, pos.y + ImGui.get_text_line_height)
ImGui.with_text_wrap_pos(ImGui.get_cursor_pos.x + wrap_width.val) do
if n == 0
ImGui.text("The lazy dog is a good dog. This paragraph should fit within %.0f pixels. Testing a 1 character word. The quick brown fox jumps over the lazy dog.", wrap_width.val)
else
ImGui.text("aaaaaaaa bbbbbbbb, c cccccccc,dddddddd. d eeeeeeee ffffffff. gggggggg!hhhhhhhh")
end
draw_list.add_rect(ImGui.get_item_rect_min, ImGui.get_item_rect_max, ImGui.col32(255, 255, 0, 255))
draw_list.add_rect_filled(marker_min, marker_max, ImGui.col32(255, 0, 255, 255))
end
end
end
demo_marker("Widgets/Text/UTF-8 Text")
ImGui.tree_node("UTF-8 Text") do
ImGui.text_wrapped(
"CJK text will only appear if the font was loaded with the appropriate CJK character ranges. " +
"Call io.Fonts->AddFontFromFileTTF() manually to load extra character ranges. " +
"Read docs/FONTS.md for details.")
ImGui.text("Hiragana: かきくけこ (kakikukeko)")
ImGui.text("Kanjis: 日本語 (nihongo)")
static buf = ImGui::TextBuffer.new("日本語", 32)
ImGui.input_text("UTF-8 input", buf.val)
end
end
demo_marker("Widgets/Images")
ImGui.tree_node("Images") do
io = ImGui.get_io
ImGui.text_wrapped(
"Below we are displaying the font texture (which is the only texture we have access to in this demo). " +
"Use the 'ImTextureID' type as storage to pass pointers or identifier to your own texture data. " +
"Hover the texture for a zoomed view!")
my_tex_id = io.fonts.tex_id
my_tex_w = io.fonts.tex_width
my_tex_h = io.fonts.tex_height
begin
static use_text_color_for_tint = false
ImGui.checkbox("Use Text Color for Tint", pointerof(use_text_color_for_tint.val))
ImGui.text("%.0fx%.0f", my_tex_w, my_tex_h)
pos = ImGui.get_cursor_screen_pos
uv_min = ImVec2.new(0.0f32, 0.0f32)
uv_max = ImVec2.new(1.0f32, 1.0f32)
tint_col = use_text_color_for_tint.val ? ImGui.get_style_color_vec4(ImGuiCol::Text) : ImVec4.new(1.0f32, 1.0f32, 1.0f32, 1.0f32)
border_col = ImGui.get_style_color_vec4(ImGuiCol::Border)
ImGui.image(my_tex_id, ImVec2.new(my_tex_w, my_tex_h), uv_min, uv_max, tint_col, border_col)
if ImGui.begin_item_tooltip
region_sz = 32.0f32
region_x = io.mouse_pos.x - pos.x - region_sz * 0.5f32
region_y = io.mouse_pos.y - pos.y - region_sz * 0.5f32
zoom = 4.0f32
if region_x < 0.0f32
region_x = 0.0f32
elsif region_x > my_tex_w - region_sz
region_x = my_tex_w - region_sz
end
if region_y < 0.0f32
region_y = 0.0f32
elsif region_y > my_tex_h - region_sz
region_y = my_tex_h - region_sz
end
ImGui.text("Min: (%.2f, %.2f)", region_x, region_y)
ImGui.text("Max: (%.2f, %.2f)", region_x + region_sz, region_y + region_sz)
uv0 = ImVec2.new((region_x) / my_tex_w, (region_y) / my_tex_h)
uv1 = ImVec2.new((region_x + region_sz) / my_tex_w, (region_y + region_sz) / my_tex_h)
ImGui.image(my_tex_id, ImVec2.new(region_sz * zoom, region_sz * zoom), uv0, uv1, tint_col, border_col)
ImGui.end_tooltip
end
end
demo_marker("Widgets/Images/Textured buttons")
ImGui.text_wrapped("And now some textured buttons..")
static pressed_count = 0
8.times do |i|
ImGui.with_id(i) do
if i > 0
ImGui.push_style_var(ImGuiStyleVar::FramePadding, ImVec2.new(i - 1.0f32, i - 1.0f32))
end
size = ImVec2.new(32.0f32, 32.0f32)
uv0 = ImVec2.new(0.0f32, 0.0f32)
uv1 = ImVec2.new(32.0f32 / my_tex_w, 32.0f32 / my_tex_h)
bg_col = ImVec4.new(0.0f32, 0.0f32, 0.0f32, 1.0f32)
tint_col = ImVec4.new(1.0f32, 1.0f32, 1.0f32, 1.0f32)
if ImGui.image_button("", my_tex_id, size, uv0, uv1, bg_col, tint_col)
pressed_count.val += 1
end
if i > 0
ImGui.pop_style_var
end
end
ImGui.same_line
end
ImGui.new_line
ImGui.text("Pressed %d times.", pressed_count.val)
end
demo_marker("Widgets/Combo")
ImGui.tree_node("Combo") do
static flags = ImGuiComboFlags::None
ImGui.checkbox_flags("ImGuiComboFlags_PopupAlignLeft", pointerof(flags.val), ImGuiComboFlags::PopupAlignLeft)
ImGui.same_line
help_marker("Only makes a difference if the popup is larger than the combo")
if ImGui.checkbox_flags("ImGuiComboFlags_NoArrowButton", pointerof(flags.val), ImGuiComboFlags::NoArrowButton)
flags.val &= ~ImGuiComboFlags::NoPreview
end
if ImGui.checkbox_flags("ImGuiComboFlags_NoPreview", pointerof(flags.val), ImGuiComboFlags::NoPreview)
flags.val &= ~(ImGuiComboFlags::NoArrowButton | ImGuiComboFlags::WidthFitPreview)
end
if ImGui.checkbox_flags("ImGuiComboFlags_WidthFitPreview", pointerof(flags.val), ImGuiComboFlags::WidthFitPreview)
flags.val &= ~ImGuiComboFlags::NoPreview
end
if ImGui.checkbox_flags("ImGuiComboFlags_HeightSmall", pointerof(flags.val), ImGuiComboFlags::HeightSmall)
flags.val &= ~(ImGuiComboFlags::HeightMask_ & ~ImGuiComboFlags::HeightSmall)
end
if ImGui.checkbox_flags("ImGuiComboFlags_HeightRegular", pointerof(flags.val), ImGuiComboFlags::HeightRegular)
flags.val &= ~(ImGuiComboFlags::HeightMask_ & ~ImGuiComboFlags::HeightRegular)
end
if ImGui.checkbox_flags("ImGuiComboFlags_HeightLargest", pointerof(flags.val), ImGuiComboFlags::HeightLargest)
flags.val &= ~(ImGuiComboFlags::HeightMask_ & ~ImGuiComboFlags::HeightLargest)
end
items = ["AAAA", "BBBB", "CCCC", "DDDD", "EEEE", "FFFF", "GGGG", "HHHH", "IIII", "JJJJ", "KKKK", "LLLLLLL", "MMMM", "OOOOOOO"]
static item_current_idx = 0
combo_preview_value = items[item_current_idx.val]
ImGui.combo("combo 1", combo_preview_value, flags.val) do
items.size.times do |n|
is_selected = (item_current_idx.val == n)
if ImGui.selectable(items[n], is_selected)
item_current_idx.val = n
end
if is_selected
ImGui.set_item_default_focus
end
end
end
ImGui.spacing
ImGui.separator_text("One-liner variants")
help_marker("Flags above don't apply to this section.")
static item_current_2 = 0
ImGui.combo("combo 2 (one-liner)", pointerof(item_current_2.val), "aaaa\0bbbb\0cccc\0dddd\0eeee\0\0")
static item_current_3 = -1
ImGui.combo("combo 3 (array)", pointerof(item_current_3.val), items)
static item_current_4 = 0
ImGui.combo("combo 4 (function)", pointerof(item_current_4.val), items.size) do |idx|
items[idx]
end
end
demo_marker("Widgets/List Boxes")
ImGui.tree_node("List boxes") do
items = ["AAAA", "BBBB", "CCCC", "DDDD", "EEEE", "FFFF", "GGGG", "HHHH", "IIII", "JJJJ", "KKKK", "LLLLLLL", "MMMM", "OOOOOOO"]
static item_current_idx = 0
ImGui.list_box("listbox 1") do
items.size.times do |n|
is_selected = (item_current_idx.val == n)
if ImGui.selectable(items[n], is_selected)
item_current_idx.val = n
end