Wraps Dear ImGui initialisation, event forwarding, and widget calls. More...

#include <kguimanager.h>

Public Member Functions
	kGuiManager ()
	Constructs an uninitialised GUI manager; call init() before use.
virtual	~kGuiManager ()
	Destroys the GUI manager, releasing any held ImGui resources.
void	init (kRenderer *newRenderer)
	Initialises ImGui with the given renderer's context and window.
void	processEvent (kSystemEvent event)
	Forwards a system event to ImGui for input processing.
void	loadDefaultFontFromResource (kString resourceName)
	Loads and sets the default ImGui font from a Windows resource.
void	canvasStart ()
	Begins a new ImGui frame (call once per render frame).
void	canvasEnd ()
	Renders all ImGui draw data and ends the frame.
void	windowStart (kString title, bool *open=nullptr, ImGuiWindowFlags flags=0)
	Begins an ImGui window.
void	windowEnd ()
	Ends the current ImGui window.
kVec2	getWindowSize ()
	Returns the inner size of the current window in pixels.
kVec2	getWindowPos ()
	Returns the screen-space position of the current window.
void	setNextWindowSize (kVec2 size, ImGuiCond cond=0)
	Sets the size of the next window before it is created.
void	setNextWindowPos (kVec2 pos, ImGuiCond cond=0, kVec2 pivot=kVec2(0, 0))
	Sets the position of the next window before it is created.
void	setNextWindowContentSize (kVec2 size)
	Sets the content size of the next window.
void	setNextWindowCollapsed (bool collapsed, ImGuiCond cond=0)
	Sets the collapsed state of the next window.
void	setNextWindowFocus ()
	Gives input focus to the next window.
void	setNextWindowBgAlpha (float alpha)
	Sets the background transparency of the next window.
bool	isWindowFocused (ImGuiFocusedFlags flags=0)
	Returns whether the current window has keyboard focus.
bool	isWindowHovered (ImGuiHoveredFlags flags=0)
	Returns whether the mouse is hovering over the current window.
kVec2	getWindowContentRegionMin ()
	Returns the content region minimum bound in window-local coordinates.
kVec2	getWindowContentRegionMax ()
	Returns the content region maximum bound in window-local coordinates.
kVec2	getMainViewportCenter ()
	Returns the center of the main viewport in screen coordinates.
bool	childStart (kString id, kVec2 size=kVec2(0, 0), ImGuiChildFlags childFlags=0, ImGuiWindowFlags windowFlags=0)
	Begins a scrollable child region.
void	childEnd ()
	Ends the current child region. Always call this after childStart().
void	dockSpaceStart (kString name)
	Begins a full-window docking area.
void	dockSpaceEnd ()
	Ends the current dockspace (no-op; kept for symmetry).
bool	menuBar ()
	Begins the main menu bar.
void	menuBarEnd ()
	Ends the main menu bar.
bool	menu (kString text)
	Begins a named menu.
void	menuEnd ()
	Ends the current menu.
bool	menuItem (kString text, kString shortcut="", bool selected=false, bool enabled=true)
	Adds a clickable menu item.
bool	menuItem (kString text, kString shortcut, bool *selected, bool enabled=true)
	Adds a toggleable menu item backed by a bool.
void	groupStart ()
	Begins a layout group.
void	groupEnd ()
	Ends a layout group.
void	beginDisabled (bool disabled=true)
	Disables all user interaction and dims widgets.
void	endDisabled ()
	Ends a disabled section opened with beginDisabled().
void	sameLine (float offsetFromStartX=0.0f, float spacing=-1.0f)
	Places the next widget on the same line as the previous one.
void	spacing ()
	Inserts a small vertical space.
void	separator ()
	Draws a horizontal separator line.
void	separatorText (kString text)
	Draws a horizontal separator with a centred text label.
void	newLine ()
	Inserts a blank line in the layout.
void	indent (float indentW=0.0f)
	Moves the cursor right by `indentW` pixels.
void	unindent (float indentW=0.0f)
	Moves the cursor left by `indentW` pixels.
void	dummy (kVec2 size)
	Inserts an invisible widget of a given size for layout spacing.
void	setCursorPos (kVec2 pos)
	Moves the cursor to an absolute position within the window.
void	setCursorPosX (float x)
	Sets the cursor X position.
void	setCursorPosY (float y)
	Sets the cursor Y position.
kVec2	getCursorPos ()
	Returns the cursor position relative to the window.
float	getCursorPosX ()
	Returns the cursor X position.
float	getCursorPosY ()
	Returns the cursor Y position.
kVec2	getCursorScreenPos ()
	Returns the cursor position in screen coordinates.
void	setCursorScreenPos (kVec2 pos)
	Moves the cursor to an absolute screen-space position.
kVec2	getContentRegionAvail ()
	Returns the available content region size in the current window.
void	setNextItemWidth (float itemWidth)
	Sets the width of the next widget.
void	pushItemWidth (float itemWidth)
	Pushes a width onto the item-width stack.
void	popItemWidth ()
	Pops the last item width from the stack.
float	calcItemWidth ()
	Returns the current item width calculated by ImGui.
void	pushTextWrapPos (float wrapLocalPosX=0.0f)
	Pushes a text wrap position onto the stack.
void	popTextWrapPos ()
	Pops the last text wrap position.
float	getFrameHeight ()
	Returns the height of a typical framed widget in pixels (FontSize + FramePadding * 2).
float	getFrameHeightWithSpacing ()
	Returns the height of a framed widget plus item spacing (distance between two consecutive widget rows).
void	pushId (kString id)
	Pushes a kString ID onto the ID stack.
void	pushId (int id)
	Pushes an integer ID onto the ID stack.
void	pushId (const void *ptr)
	Pushes a pointer ID onto the ID stack.
void	popId ()
	Pops the last ID from the ID stack.
void	pushStyleColor (ImGuiCol idx, kVec4 color)
	Pushes a colour override for an ImGui style element.
void	pushStyleColor (ImGuiCol idx, ImU32 color)
	Pushes a packed colour override.
void	popStyleColor (int count=1)
	Pops colour overrides from the style stack.
void	pushStyleVar (ImGuiStyleVar idx, float val)
	Pushes a float style variable override.
void	pushStyleVar (ImGuiStyleVar idx, kVec2 val)
	Pushes a kVec2 style variable override.
void	popStyleVar (int count=1)
	Pops style variable overrides from the stack.
void	pushFont (ImFont *font)
	Pushes a font onto the font stack.
void	popFont ()
	Pops the last font from the font stack.
float	getFontSize ()
	Returns the current scaled font size in pixels.
void	text (kString text)
	Renders a plain text kString.
void	textColored (kVec4 color, kString text)
	Renders coloured text.
void	textDisabled (kString text)
	Renders greyed-out (disabled) text.
void	alignTextToFramePadding ()
	Vertically aligns the next widget so its baseline lines up with text.
void	textWrapped (kString text)
	Renders text that wraps at the wrap position.
void	labelText (kString label, kString text)
	Renders a label/value pair aligned to the value column.
void	bulletText (kString text)
	Renders text preceded by a bullet point.
void	bullet ()
	Renders a bullet point without text.
kVec2	calcTextSize (kString text, bool hideTextAfterDoubleHash=false, float wrapWidth=-1.0f)
	Returns the rendered size of a text kString.
bool	button (kString text, kIvec2 size=kIvec2(0, 0))
	Renders a push-button.
bool	smallButton (kString text)
	Renders a small inline push-button.
bool	invisibleButton (kString id, kVec2 size, ImGuiButtonFlags flags=0)
	Renders an invisible hit-area button.
bool	arrowButton (kString id, ImGuiDir dir)
	Renders an arrow-shaped button.
bool	radioButton (kString label, bool active)
	Renders a radio button.
bool	radioButton (kString label, int *v, int vButton)
	Renders a radio button linked to an integer variable.
bool	checkbox (kString text, bool *output)
	Renders a checkbox.
bool	checkboxFlags (kString label, int *flags, int flagsValue)
	Renders a checkbox backed by integer flags (signed).
bool	checkboxFlags (kString label, unsigned int *flags, unsigned int flagsValue)
	Renders a checkbox backed by integer flags (unsigned).
bool	inputText (kString label, kString &value, size_t maxLength=256, ImGuiInputTextFlags flags=0)
	Renders a single-line text input field.
bool	inputTextMultiline (kString label, kString &value, size_t maxLength=1024, kVec2 size=kVec2(0, 0), ImGuiInputTextFlags flags=0)
	Renders a multi-line text input field.
bool	inputTextWithHint (kString label, kString hint, kString &value, size_t maxLength=256, ImGuiInputTextFlags flags=0)
	Renders a single-line text input with a placeholder hint.
bool	inputFloat (kString label, float *v, float step=0.0f, float stepFast=0.0f, kString format="%.3f", ImGuiInputTextFlags flags=0)
	Single float input.
bool	inputFloat2 (kString label, float v[2], kString format="%.3f", ImGuiInputTextFlags flags=0)
	Two-component float input.
bool	inputFloat3 (kString label, float v[3], kString format="%.3f", ImGuiInputTextFlags flags=0)
	Three-component float input.
bool	inputFloat4 (kString label, float v[4], kString format="%.3f", ImGuiInputTextFlags flags=0)
	Four-component float input.
bool	inputInt (kString label, int *v, int step=1, int stepFast=100, ImGuiInputTextFlags flags=0)
	Single integer input.
bool	inputInt2 (kString label, int v[2], ImGuiInputTextFlags flags=0)
	Two-component integer input.
bool	inputInt3 (kString label, int v[3], ImGuiInputTextFlags flags=0)
	Three-component integer input.
bool	inputInt4 (kString label, int v[4], ImGuiInputTextFlags flags=0)
	Four-component integer input.
bool	inputDouble (kString label, double *v, double step=0.0, double stepFast=0.0, kString format="%.6f", ImGuiInputTextFlags flags=0)
	Double-precision float input.
bool	dragFloat (kString label, float *v, float speed=1.0f, float min=0.0f, float max=0.0f, kString format="%.3f", ImGuiSliderFlags flags=0)
	Drag widget for a single float.
bool	dragFloat2 (kString label, float v[2], float speed=1.0f, float min=0.0f, float max=0.0f, kString format="%.3f", ImGuiSliderFlags flags=0)
	Drag widget for two floats.
bool	dragFloat3 (kString label, float v[3], float speed=1.0f, float min=0.0f, float max=0.0f, kString format="%.3f", ImGuiSliderFlags flags=0)
	Drag widget for three floats.
bool	dragFloat4 (kString label, float v[4], float speed=1.0f, float min=0.0f, float max=0.0f, kString format="%.3f", ImGuiSliderFlags flags=0)
	Drag widget for four floats.
bool	dragInt (kString label, int *v, float speed=1.0f, int min=0, int max=0, kString format="%d", ImGuiSliderFlags flags=0)
	Drag widget for a single integer.
bool	dragInt2 (kString label, int v[2], float speed=1.0f, int min=0, int max=0, kString format="%d", ImGuiSliderFlags flags=0)
	Drag widget for two integers.
bool	dragInt3 (kString label, int v[3], float speed=1.0f, int min=0, int max=0, kString format="%d", ImGuiSliderFlags flags=0)
	Drag widget for three integers.
bool	dragInt4 (kString label, int v[4], float speed=1.0f, int min=0, int max=0, kString format="%d", ImGuiSliderFlags flags=0)
	Drag widget for four integers.
bool	dragFloatRange2 (kString label, float vCurrentMin, float vCurrentMax, float speed=1.0f, float min=0.0f, float max=0.0f, kString format="%.3f", kString formatMax="", ImGuiSliderFlags flags=0)
	Drag widget for a float range (min + max pair).
bool	dragIntRange2 (kString label, int vCurrentMin, int vCurrentMax, float speed=1.0f, int min=0, int max=0, kString format="%d", kString formatMax="", ImGuiSliderFlags flags=0)
	Drag widget for an integer range (min + max pair).
bool	sliderFloat (kString label, float *v, float min, float max, kString format="%.3f", ImGuiSliderFlags flags=0)
	Horizontal slider for a single float.
bool	sliderFloat2 (kString label, float v[2], float min, float max, kString format="%.3f", ImGuiSliderFlags flags=0)
	Horizontal slider for two floats.
bool	sliderFloat3 (kString label, float v[3], float min, float max, kString format="%.3f", ImGuiSliderFlags flags=0)
	Horizontal slider for three floats.
bool	sliderFloat4 (kString label, float v[4], float min, float max, kString format="%.3f", ImGuiSliderFlags flags=0)
	Horizontal slider for four floats.
bool	sliderAngle (kString label, float *vRad, float vDegreesMin=-360.0f, float vDegreesMax=360.0f, kString format="%.0f deg", ImGuiSliderFlags flags=0)
	Horizontal slider that displays and edits an angle in degrees.
bool	sliderInt (kString label, int *v, int min, int max, kString format="%d", ImGuiSliderFlags flags=0)
	Horizontal slider for a single integer.
bool	sliderInt2 (kString label, int v[2], int min, int max, kString format="%d", ImGuiSliderFlags flags=0)
	Horizontal slider for two integers.
bool	sliderInt3 (kString label, int v[3], int min, int max, kString format="%d", ImGuiSliderFlags flags=0)
	Horizontal slider for three integers.
bool	sliderInt4 (kString label, int v[4], int min, int max, kString format="%d", ImGuiSliderFlags flags=0)
	Horizontal slider for four integers.
bool	colorEdit3 (kString label, float col[3], ImGuiColorEditFlags flags=0)
	RGB colour editor widget.
bool	colorEdit4 (kString label, float col[4], ImGuiColorEditFlags flags=0)
	RGBA colour editor widget.
bool	colorPicker3 (kString label, float col[3], ImGuiColorEditFlags flags=0)
	RGB colour picker widget.
bool	colorPicker4 (kString label, float col[4], ImGuiColorEditFlags flags=0)
	RGBA colour picker widget.
bool	colorButton (kString descId, kVec4 col, ImGuiColorEditFlags flags=0, kVec2 size=kVec2(0, 0))
	Renders a small coloured square button.
void	setColorEditOptions (ImGuiColorEditFlags flags)
	Sets global colour edit display options.
bool	combo (kString label, int *currentItem, std::vector< kString > items, int popupMaxHeightInItems=-1)
	Drop-down combo box.
bool	listBox (kString label, int *currentItem, std::vector< kString > items, int heightInItems=-1)
	Scrollable list box.
bool	selectable (kString label, bool selected=false, ImGuiSelectableFlags flags=0, kVec2 size=kVec2(0, 0))
	Selectable row (state passed by value).
bool	selectable (kString label, bool *pSelected, ImGuiSelectableFlags flags=0, kVec2 size=kVec2(0, 0))
	Selectable row (state passed by pointer).
bool	treeStart (kString label)
	Begins a tree node (uses label as ID).
bool	treeStartEx (kString id, kString label="", ImGuiTreeNodeFlags flags=0)
	Begins a tree node with explicit ID and label.
void	treeEnd ()
	Ends the current tree node (use when treeStart returned true).
void	treePop ()
	Pops the tree indent regardless of whether the node is open.
bool	collapsingHeader (kString label, ImGuiTreeNodeFlags flags=0)
	Collapsible section header.
bool	collapsingHeader (kString label, bool *visible, ImGuiTreeNodeFlags flags=0)
	Collapsible section header with a close button.
void	setNextItemOpen (bool isOpen, ImGuiCond cond=0)
	Sets the open state of the next tree node.
void	image (GLuint textureId, kVec2 size, kVec2 uv0=kVec2(0, 0), kVec2 uv1=kVec2(1, 1))
	Renders a GPU texture as an image widget.
bool	imageButton (kString id, GLuint textureId, kVec2 size, kVec2 uv0=kVec2(0, 0), kVec2 uv1=kVec2(1, 1), kVec4 tint=kVec4(1, 1, 1, 1))
	Renders a GPU texture as a clickable image button.
void	progressBar (float fraction, kVec2 size=kVec2(-FLT_MIN, 0), kString overlay="")
	Renders a horizontal progress bar.
void	setItemTooltip (kString text)
	Sets a tooltip shown when the last item is hovered.
void	beginTooltip ()
	Begins a custom tooltip popup.
void	endTooltip ()
	Ends the current tooltip popup.
void	openPopup (kString id, ImGuiPopupFlags flags=0)
	Opens a named popup on the next frame.
bool	popupStart (kString id, ImGuiWindowFlags flags=0)
	Begins rendering a named popup.
void	popupEnd ()
	Ends the current popup.
bool	popupModal (kString name, bool *open=nullptr, ImGuiWindowFlags flags=0)
	Begins a modal popup dialog.
bool	popupContextItemStart (kString id="", ImGuiPopupFlags flags=ImGuiPopupFlags_MouseButtonRight)
	Begins a context menu popup on right-click of the last item.
bool	popupContextWindowStart (kString id="", ImGuiPopupFlags flags=ImGuiPopupFlags_MouseButtonRight)
	Begins a context menu popup on right-click of the current window.
bool	isPopupOpen (kString id, ImGuiPopupFlags flags=0)
	Returns whether a named popup is currently open.
void	closeCurrentPopup ()
	Closes the currently open popup.
bool	tabBarStart (kString id, ImGuiTabBarFlags flags=0)
	Begins a tab bar container.
void	tabBarEnd ()
	Ends the current tab bar.
bool	tabItemStart (kString label, bool *open=nullptr, ImGuiTabItemFlags flags=0)
	Begins a tab item inside a tab bar.
void	tabItemEnd ()
	Ends the current tab item.
void	setTabItemClosed (kString tabOrDockedWindowLabel)
	Marks a tab (or docked window) as closed programmatically.
bool	tableStart (kString id, int columns, ImGuiTableFlags flags=0, kVec2 outerSize=kVec2(0, 0), float innerWidth=0.0f)
	Begins a table layout.
void	tableEnd ()
	Ends the current table.
bool	tableNextColumn ()
	Advances to the next column in the current row.
bool	tableSetColumnIndex (int columnN)
	Sets the current column index explicitly.
void	tableNextRow (ImGuiTableRowFlags rowFlags=0, float minRowHeight=0.0f)
	Begins a new table row.
void	tableSetupColumn (kString label, ImGuiTableColumnFlags flags=0, float initWidthOrWeight=0.0f)
	Sets up a table column with optional flags and initial width.
void	tableSetupScrollFreeze (int cols, int rows)
	Freezes leading columns/rows so they remain visible while scrolling.
void	tableHeadersRow ()
	Renders the header row using labels set by tableSetupColumn().
void	tableHeader (kString label)
	Renders a single header cell.
void	columnsStart (int count=1, kString id="", bool borders=true)
	Begins a legacy multi-column layout.
void	columnsEnd ()
	Resets to a single-column layout, ending the columns region.
void	nextColumn ()
	Advances to the next column (wraps to the next row when needed).
float	getColumnWidth (int columnIndex=-1)
	Returns the width of a column in pixels.
float	getScrollX ()
	Returns the current horizontal scroll position.
float	getScrollY ()
	Returns the current vertical scroll position.
void	setScrollX (float scrollX)
	Sets the horizontal scroll position.
void	setScrollY (float scrollY)
	Sets the vertical scroll position.
float	getScrollMaxX ()
	Returns the maximum horizontal scroll position.
float	getScrollMaxY ()
	Returns the maximum vertical scroll position.
void	setScrollHereX (float centerXRatio=0.5f)
	Scrolls so the current item is visible horizontally.
void	setScrollHereY (float centerYRatio=0.5f)
	Scrolls so the current item is visible vertically.
bool	isItemHovered (ImGuiHoveredFlags flags=0)
	Returns whether the last widget is hovered.
bool	isItemActive ()
	Returns whether the last widget is active (e.g. being dragged).
bool	isItemFocused ()
	Returns whether the last widget has keyboard focus.
bool	isItemClicked (ImGuiMouseButton mouseButton=0)
	Returns whether the last widget was clicked.
bool	isItemVisible ()
	Returns whether the last widget is visible in the clipping rectangle.
bool	isItemEdited ()
	Returns whether the last widget's value was edited this frame.
bool	isItemActivated ()
	Returns whether the last widget became active this frame.
bool	isItemDeactivated ()
	Returns whether the last widget became inactive this frame.
bool	isItemDeactivatedAfterEdit ()
	Returns whether the last widget became inactive after being edited.
bool	isItemToggledOpen ()
	Returns whether the last tree node was toggled open.
bool	isAnyItemHovered ()
	Returns whether any widget is currently hovered.
bool	isAnyItemActive ()
	Returns whether any widget is currently active.
bool	isAnyItemFocused ()
	Returns whether any widget currently has focus.
kVec2	getItemRectMin ()
	Returns the bounding box minimum of the last item (screen space).
kVec2	getItemRectMax ()
	Returns the bounding box maximum of the last item (screen space).
kVec2	getItemRectSize ()
	Returns the bounding box size of the last item.
void	setNextItemAllowOverlap ()
	Allows the next item to overlap previously drawn items. Call this before the item that should allow overlap.
bool	isMouseDown (ImGuiMouseButton button)
	Returns whether a mouse button is held down.
bool	isMouseClicked (ImGuiMouseButton button, bool repeat=false)
	Returns whether a mouse button was clicked this frame.
bool	isMouseReleased (ImGuiMouseButton button)
	Returns whether a mouse button was released this frame.
bool	isMouseDoubleClicked (ImGuiMouseButton button)
	Returns whether a mouse button was double-clicked this frame.
bool	isMouseHoveringRect (kVec2 rMin, kVec2 rMax, bool clip=true)
	Returns whether the mouse is inside the given screen-space rectangle.
kVec2	getMousePos ()
	Returns the current mouse position in screen coordinates.
kVec2	getMouseDelta ()
	Returns the mouse position delta since the last frame.
float	getMouseWheel ()
	Returns the vertical mouse wheel delta.
bool	isKeyShift ()
	Returns true if the Shift modifier key is currently held.
bool	isKeyCtrl ()
	Returns true if the Ctrl modifier key is currently held.
bool	getWantTextInput ()
	Returns true if any ImGui widget currently wants text input.
float	getDeltaTime ()
	Returns the time in seconds elapsed since the last frame.
void	drawListAddImage (GLuint textureId, kVec2 pMin, kVec2 pMax, kVec2 uvMin=kVec2(0, 0), kVec2 uvMax=kVec2(1, 1), kVec4 tint=kVec4(1, 1, 1, 1))
	Draws a textured rectangle directly onto the window draw list.
float	getTextLineHeight ()
	Returns the height of a single text line in pixels.
void	textUnformatted (kString text)
	Renders a raw string without label formatting.
void	setClipboardText (kString text)
	Sets the OS clipboard text.
void	saveIniSettingsToDisk (kString filename)
	Saves the current ImGui layout state to a .ini file.
void	loadIniSettingsFromDisk (kString filename)
	Loads ImGui layout state from a .ini file.
void	loadIniSettingsFromMemory (const char *data, size_t size)
	Loads ImGui layout state from an in-memory .ini blob.
void	addSettingsHandler (ImGuiSettingsHandler handler)
	Registers a custom .ini settings handler.
void	destroy ()
	Shuts down ImGui and releases backend resources.

Detailed Description

Wraps Dear ImGui initialisation, event forwarding, and widget calls.

Call init() once after the renderer is ready, then each frame:

Forward input events with processEvent().
Open a frame with canvasStart().
Build UI using the widget methods.
Close the frame with canvasEnd().

kGuiManager gui;
gui.init(&renderer);
// per-frame:
gui.canvasStart();
gui.windowStart("My Window");
gui.text("Hello, world!");
gui.windowEnd();
gui.canvasEnd();

Constructor & Destructor Documentation

◆ kGuiManager()

kemena::kGuiManager::kGuiManager ( )

Constructs an uninitialised GUI manager; call init() before use.

◆ ~kGuiManager()

virtual kemena::kGuiManager::~kGuiManager ( )

virtual

Destroys the GUI manager, releasing any held ImGui resources.

Member Function Documentation

◆ addSettingsHandler()

void kemena::kGuiManager::addSettingsHandler ( ImGuiSettingsHandler handler )

Registers a custom .ini settings handler.

Parameters

handler Fully configured ImGuiSettingsHandler struct.

◆ alignTextToFramePadding()

void kemena::kGuiManager::alignTextToFramePadding ( )

Vertically aligns the next widget so its baseline lines up with text.

◆ arrowButton()

bool kemena::kGuiManager::arrowButton	(	kString	id,
		ImGuiDir	dir )

Renders an arrow-shaped button.

Parameters

id	Unique identifier.
dir	Arrow direction (ImGuiDir).

Returns: true if clicked.

◆ beginDisabled()

void kemena::kGuiManager::beginDisabled ( bool disabled = true )

Disables all user interaction and dims widgets.

Parameters

disabled Pass true to enter disabled state (default).

◆ beginTooltip()

void kemena::kGuiManager::beginTooltip ( )

Begins a custom tooltip popup.

◆ bullet()

void kemena::kGuiManager::bullet ( )

Renders a bullet point without text.

◆ bulletText()

void kemena::kGuiManager::bulletText ( kString text )

Renders text preceded by a bullet point.

Parameters

text Text.

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◆ button()

bool kemena::kGuiManager::button	(	kString	text,
		kIvec2	size = kIvec2(0, 0) )

Renders a push-button.

Parameters

text	Label text.
size	Button size in pixels (0 = auto).

Returns: true if the button was clicked.

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◆ calcItemWidth()

float kemena::kGuiManager::calcItemWidth ( )

Returns the current item width calculated by ImGui.

◆ calcTextSize()

kVec2 kemena::kGuiManager::calcTextSize	(	kString	text,
		bool	hideTextAfterDoubleHash = false,
		float	wrapWidth = -1.0f )

Returns the rendered size of a text kString.

Parameters

text	Text to measure.
hideTextAfterDoubleHash	If true, text after "##" is not measured.
wrapWidth	Wrap width (-1 = no wrap).

Returns: Bounding size in pixels.

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◆ canvasEnd()

void kemena::kGuiManager::canvasEnd ( )

Renders all ImGui draw data and ends the frame.

◆ canvasStart()

void kemena::kGuiManager::canvasStart ( )

Begins a new ImGui frame (call once per render frame).

◆ checkbox()

bool kemena::kGuiManager::checkbox	(	kString	text,
		bool *	output )

Renders a checkbox.

Parameters

text	Checkbox label.
output	Pointer to the bool state.

Returns: true if the state changed.

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◆ checkboxFlags() [1/2]

bool kemena::kGuiManager::checkboxFlags	(	kString	label,
		int *	flags,
		int	flagsValue )

Renders a checkbox backed by integer flags (signed).

Parameters

label	Checkbox label.
flags	Pointer to the flags integer.
flagsValue	Bit mask this checkbox controls.

Returns: true if the state changed.

◆ checkboxFlags() [2/2]

bool kemena::kGuiManager::checkboxFlags	(	kString	label,
		unsigned int *	flags,
		unsigned int	flagsValue )

Renders a checkbox backed by integer flags (unsigned).

Parameters

label	Checkbox label.
flags	Pointer to the flags integer.
flagsValue	Bit mask this checkbox controls.

Returns: true if the state changed.

◆ childEnd()

void kemena::kGuiManager::childEnd ( )

Ends the current child region. Always call this after childStart().

◆ childStart()

bool kemena::kGuiManager::childStart	(	kString	id,
		kVec2	size = kVec2(0, 0),
		ImGuiChildFlags	childFlags = 0,
		ImGuiWindowFlags	windowFlags = 0 )

Begins a scrollable child region.

Parameters

id	Unique identifier.
size	Size in pixels (0 = fill remaining; negative = remaining minus value).
childFlags	ImGuiChildFlags (e.g. ImGuiChildFlags_Borders).
windowFlags	ImGuiWindowFlags.

Returns: true if the child region is visible; always call childEnd() regardless.

◆ closeCurrentPopup()

void kemena::kGuiManager::closeCurrentPopup ( )

Closes the currently open popup.

◆ collapsingHeader() [1/2]

bool kemena::kGuiManager::collapsingHeader	(	kString	label,
		bool *	visible,
		ImGuiTreeNodeFlags	flags = 0 )

Collapsible section header with a close button.

Parameters

label	Label text.
visible	Pointer to the visibility bool.
flags	ImGuiTreeNodeFlags.

Returns: true if the section is expanded.

◆ collapsingHeader() [2/2]

bool kemena::kGuiManager::collapsingHeader	(	kString	label,
		ImGuiTreeNodeFlags	flags = 0 )

Collapsible section header.

Parameters

label	Label text.
flags	ImGuiTreeNodeFlags.

Returns: true if the section is expanded.

◆ colorButton()

bool kemena::kGuiManager::colorButton	(	kString	descId,
		kVec4	col,
		ImGuiColorEditFlags	flags = 0,
		kVec2	size = kVec2(0, 0) )

Renders a small coloured square button.

Parameters

descId	Unique identifier / tooltip.
col	Button colour.
flags	ImGuiColorEditFlags.
size	Button size (0 = default).

Returns: true if clicked.

◆ colorEdit3()

bool kemena::kGuiManager::colorEdit3	(	kString	label,
		float	col[3],
		ImGuiColorEditFlags	flags = 0 )

RGB colour editor widget.

Returns: true if changed.

◆ colorEdit4()

bool kemena::kGuiManager::colorEdit4	(	kString	label,
		float	col[4],
		ImGuiColorEditFlags	flags = 0 )

RGBA colour editor widget.

Returns: true if changed.

◆ colorPicker3()

bool kemena::kGuiManager::colorPicker3	(	kString	label,
		float	col[3],
		ImGuiColorEditFlags	flags = 0 )

RGB colour picker widget.

Returns: true if changed.

◆ colorPicker4()

bool kemena::kGuiManager::colorPicker4	(	kString	label,
		float	col[4],
		ImGuiColorEditFlags	flags = 0 )

RGBA colour picker widget.

Returns: true if changed.

◆ columnsEnd()

void kemena::kGuiManager::columnsEnd ( )

Resets to a single-column layout, ending the columns region.

◆ columnsStart()

void kemena::kGuiManager::columnsStart	(	int	count = 1,
		kString	id = "",
		bool	borders = true )

Begins a legacy multi-column layout.

Parameters

count	Number of columns (1 = resets to single-column).
id	Optional unique identifier.
borders	Whether to draw column border lines.

Note: Prefer the Tables API for new code.

◆ combo()

bool kemena::kGuiManager::combo	(	kString	label,
		int *	currentItem,
		std::vector< kString >	items,
		int	popupMaxHeightInItems = -1 )

Drop-down combo box.

Parameters

label	Widget label.
currentItem	Pointer to the selected index.
items	List of option strings.
popupMaxHeightInItems	Maximum visible items in the popup (-1 = auto).

Returns: true if the selection changed.

◆ destroy()

void kemena::kGuiManager::destroy ( )

Shuts down ImGui and releases backend resources.

◆ dockSpaceEnd()

void kemena::kGuiManager::dockSpaceEnd ( )

Ends the current dockspace (no-op; kept for symmetry).

◆ dockSpaceStart()

void kemena::kGuiManager::dockSpaceStart ( kString name )

Begins a full-window docking area.

Parameters

name	Unique dockspace identifier.

◆ dragFloat()

bool kemena::kGuiManager::dragFloat	(	kString	label,
		float *	v,
		float	speed = 1.0f,
		float	min = 0.0f,
		float	max = 0.0f,
		kString	format = "%.3f",
		ImGuiSliderFlags	flags = 0 )

Drag widget for a single float.

Returns: true if changed.

◆ dragFloat2()

bool kemena::kGuiManager::dragFloat2	(	kString	label,
		float	v[2],
		float	speed = 1.0f,
		float	min = 0.0f,
		float	max = 0.0f,
		kString	format = "%.3f",
		ImGuiSliderFlags	flags = 0 )

Drag widget for two floats.

Returns: true if changed.

◆ dragFloat3()

bool kemena::kGuiManager::dragFloat3	(	kString	label,
		float	v[3],
		float	speed = 1.0f,
		float	min = 0.0f,
		float	max = 0.0f,
		kString	format = "%.3f",
		ImGuiSliderFlags	flags = 0 )

Drag widget for three floats.

Returns: true if changed.

◆ dragFloat4()

bool kemena::kGuiManager::dragFloat4	(	kString	label,
		float	v[4],
		float	speed = 1.0f,
		float	min = 0.0f,
		float	max = 0.0f,
		kString	format = "%.3f",
		ImGuiSliderFlags	flags = 0 )

Drag widget for four floats.

Returns: true if changed.

◆ dragFloatRange2()

bool kemena::kGuiManager::dragFloatRange2	(	kString	label,
		float *	vCurrentMin,
		float *	vCurrentMax,
		float	speed = 1.0f,
		float	min = 0.0f,
		float	max = 0.0f,
		kString	format = "%.3f",
		kString	formatMax = "",
		ImGuiSliderFlags	flags = 0 )

Drag widget for a float range (min + max pair).

Returns: true if either value changed.

◆ dragInt()

bool kemena::kGuiManager::dragInt	(	kString	label,
		int *	v,
		float	speed = 1.0f,
		int	min = 0,
		int	max = 0,
		kString	format = "%d",
		ImGuiSliderFlags	flags = 0 )

Drag widget for a single integer.

Returns: true if changed.

◆ dragInt2()

bool kemena::kGuiManager::dragInt2	(	kString	label,
		int	v[2],
		float	speed = 1.0f,
		int	min = 0,
		int	max = 0,
		kString	format = "%d",
		ImGuiSliderFlags	flags = 0 )

Drag widget for two integers.

Returns: true if changed.

◆ dragInt3()

bool kemena::kGuiManager::dragInt3	(	kString	label,
		int	v[3],
		float	speed = 1.0f,
		int	min = 0,
		int	max = 0,
		kString	format = "%d",
		ImGuiSliderFlags	flags = 0 )

Drag widget for three integers.

Returns: true if changed.

◆ dragInt4()

bool kemena::kGuiManager::dragInt4	(	kString	label,
		int	v[4],
		float	speed = 1.0f,
		int	min = 0,
		int	max = 0,
		kString	format = "%d",
		ImGuiSliderFlags	flags = 0 )

Drag widget for four integers.

Returns: true if changed.

◆ dragIntRange2()

bool kemena::kGuiManager::dragIntRange2	(	kString	label,
		int *	vCurrentMin,
		int *	vCurrentMax,
		float	speed = 1.0f,
		int	min = 0,
		int	max = 0,
		kString	format = "%d",
		kString	formatMax = "",
		ImGuiSliderFlags	flags = 0 )

Drag widget for an integer range (min + max pair).

Returns: true if either value changed.

◆ drawListAddImage()

void kemena::kGuiManager::drawListAddImage	(	GLuint	textureId,
		kVec2	pMin,
		kVec2	pMax,
		kVec2	uvMin = kVec2(0, 0),
		kVec2	uvMax = kVec2(1, 1),
		kVec4	tint = kVec4(1, 1, 1, 1) )

Draws a textured rectangle directly onto the window draw list.

Parameters

textureId	GPU texture handle.
pMin	Top-left corner in screen coordinates.
pMax	Bottom-right corner in screen coordinates.
uvMin	Top-left UV coordinate.
uvMax	Bottom-right UV coordinate.
tint	Tint color (default white = no tint).

◆ dummy()

void kemena::kGuiManager::dummy ( kVec2 size )

Inserts an invisible widget of a given size for layout spacing.

Parameters

size	Size in pixels.

◆ endDisabled()

void kemena::kGuiManager::endDisabled ( )

Ends a disabled section opened with beginDisabled().

◆ endTooltip()

void kemena::kGuiManager::endTooltip ( )

Ends the current tooltip popup.

◆ getColumnWidth()

float kemena::kGuiManager::getColumnWidth ( int columnIndex = -1 )

Returns the width of a column in pixels.

Parameters

columnIndex Column index (-1 = current column).

◆ getContentRegionAvail()

kVec2 kemena::kGuiManager::getContentRegionAvail ( )

Returns the available content region size in the current window.

◆ getCursorPos()

kVec2 kemena::kGuiManager::getCursorPos ( )

Returns the cursor position relative to the window.

◆ getCursorPosX()

float kemena::kGuiManager::getCursorPosX ( )

Returns the cursor X position.

◆ getCursorPosY()

float kemena::kGuiManager::getCursorPosY ( )

Returns the cursor Y position.

◆ getCursorScreenPos()

kVec2 kemena::kGuiManager::getCursorScreenPos ( )

Returns the cursor position in screen coordinates.

◆ getDeltaTime()

float kemena::kGuiManager::getDeltaTime ( )

Returns the time in seconds elapsed since the last frame.

◆ getFontSize()

float kemena::kGuiManager::getFontSize ( )

Returns the current scaled font size in pixels.

◆ getFrameHeight()

float kemena::kGuiManager::getFrameHeight ( )

Returns the height of a typical framed widget in pixels (FontSize + FramePadding * 2).

◆ getFrameHeightWithSpacing()

float kemena::kGuiManager::getFrameHeightWithSpacing ( )

Returns the height of a framed widget plus item spacing (distance between two consecutive widget rows).

◆ getItemRectMax()

kVec2 kemena::kGuiManager::getItemRectMax ( )

Returns the bounding box maximum of the last item (screen space).

◆ getItemRectMin()

kVec2 kemena::kGuiManager::getItemRectMin ( )

Returns the bounding box minimum of the last item (screen space).

◆ getItemRectSize()

kVec2 kemena::kGuiManager::getItemRectSize ( )

Returns the bounding box size of the last item.

◆ getMainViewportCenter()

kVec2 kemena::kGuiManager::getMainViewportCenter ( )

Returns the center of the main viewport in screen coordinates.

◆ getMouseDelta()

kVec2 kemena::kGuiManager::getMouseDelta ( )

Returns the mouse position delta since the last frame.

◆ getMousePos()

kVec2 kemena::kGuiManager::getMousePos ( )

Returns the current mouse position in screen coordinates.

◆ getMouseWheel()

float kemena::kGuiManager::getMouseWheel ( )

Returns the vertical mouse wheel delta.

◆ getScrollMaxX()

float kemena::kGuiManager::getScrollMaxX ( )

Returns the maximum horizontal scroll position.

◆ getScrollMaxY()

float kemena::kGuiManager::getScrollMaxY ( )

Returns the maximum vertical scroll position.

◆ getScrollX()

float kemena::kGuiManager::getScrollX ( )

Returns the current horizontal scroll position.

◆ getScrollY()

float kemena::kGuiManager::getScrollY ( )

Returns the current vertical scroll position.

◆ getTextLineHeight()

float kemena::kGuiManager::getTextLineHeight ( )

Returns the height of a single text line in pixels.

◆ getWantTextInput()

bool kemena::kGuiManager::getWantTextInput ( )

Returns true if any ImGui widget currently wants text input.

◆ getWindowContentRegionMax()

kVec2 kemena::kGuiManager::getWindowContentRegionMax ( )

Returns the content region maximum bound in window-local coordinates.

Note: Prefer GetCursorScreenPos() + GetContentRegionAvail() for new code.

◆ getWindowContentRegionMin()

kVec2 kemena::kGuiManager::getWindowContentRegionMin ( )

Returns the content region minimum bound in window-local coordinates.

Note: Prefer GetCursorScreenPos() + GetContentRegionAvail() for new code.

◆ getWindowPos()

kVec2 kemena::kGuiManager::getWindowPos ( )

Returns the screen-space position of the current window.

◆ getWindowSize()

kVec2 kemena::kGuiManager::getWindowSize ( )

Returns the inner size of the current window in pixels.

◆ groupEnd()

void kemena::kGuiManager::groupEnd ( )

Ends a layout group.

◆ groupStart()

void kemena::kGuiManager::groupStart ( )

Begins a layout group.

◆ image()

void kemena::kGuiManager::image	(	GLuint	textureId,
		kVec2	size,
		kVec2	uv0 = kVec2(0, 0),
		kVec2	uv1 = kVec2(1, 1) )

Renders a GPU texture as an image widget.

Parameters

textureId	GPU texture handle.
size	Display size in pixels.
uv0	Top-left UV coordinate.
uv1	Bottom-right UV coordinate.

◆ imageButton()

bool kemena::kGuiManager::imageButton	(	kString	id,
		GLuint	textureId,
		kVec2	size,
		kVec2	uv0 = kVec2(0, 0),
		kVec2	uv1 = kVec2(1, 1),
		kVec4	tint = kVec4(1, 1, 1, 1) )

Renders a GPU texture as a clickable image button.

Parameters

id	Unique identifier.
textureId	GPU texture handle.
size	Display size in pixels.
uv0	Top-left UV coordinate.
uv1	Bottom-right UV coordinate.
tint	Tint color multiplied over the image (default white = no tint).

Returns: true if the button was clicked.

◆ indent()

void kemena::kGuiManager::indent ( float indentW = 0.0f )

Moves the cursor right by indentW pixels.

Parameters

indentW Indent width (0 = use style default).

◆ init()

void kemena::kGuiManager::init ( kRenderer * newRenderer )

Initialises ImGui with the given renderer's context and window.

Parameters

newRenderer Renderer whose SDL window and driver context are used.

◆ inputDouble()

bool kemena::kGuiManager::inputDouble	(	kString	label,
		double *	v,
		double	step = 0.0,
		double	stepFast = 0.0,
		kString	format = "%.6f",
		ImGuiInputTextFlags	flags = 0 )

Double-precision float input.

Returns: true if changed.

◆ inputFloat()

bool kemena::kGuiManager::inputFloat	(	kString	label,
		float *	v,
		float	step = 0.0f,
		float	stepFast = 0.0f,
		kString	format = "%.3f",
		ImGuiInputTextFlags	flags = 0 )

Single float input.

Returns: true if changed.

◆ inputFloat2()

bool kemena::kGuiManager::inputFloat2	(	kString	label,
		float	v[2],
		kString	format = "%.3f",
		ImGuiInputTextFlags	flags = 0 )

Two-component float input.

Returns: true if changed.

◆ inputFloat3()

bool kemena::kGuiManager::inputFloat3	(	kString	label,
		float	v[3],
		kString	format = "%.3f",
		ImGuiInputTextFlags	flags = 0 )

Three-component float input.

Returns: true if changed.

◆ inputFloat4()

bool kemena::kGuiManager::inputFloat4	(	kString	label,
		float	v[4],
		kString	format = "%.3f",
		ImGuiInputTextFlags	flags = 0 )

Four-component float input.

Returns: true if changed.

◆ inputInt()

bool kemena::kGuiManager::inputInt	(	kString	label,
		int *	v,
		int	step = 1,
		int	stepFast = 100,
		ImGuiInputTextFlags	flags = 0 )

Single integer input.

Returns: true if changed.

◆ inputInt2()

bool kemena::kGuiManager::inputInt2	(	kString	label,
		int	v[2],
		ImGuiInputTextFlags	flags = 0 )

Two-component integer input.

Returns: true if changed.

◆ inputInt3()

bool kemena::kGuiManager::inputInt3	(	kString	label,
		int	v[3],
		ImGuiInputTextFlags	flags = 0 )

Three-component integer input.

Returns: true if changed.

◆ inputInt4()

bool kemena::kGuiManager::inputInt4	(	kString	label,
		int	v[4],
		ImGuiInputTextFlags	flags = 0 )

Four-component integer input.

Returns: true if changed.

◆ inputText()

bool kemena::kGuiManager::inputText	(	kString	label,
		kString &	value,
		size_t	maxLength = 256,
		ImGuiInputTextFlags	flags = 0 )

Renders a single-line text input field.

Parameters

label	Field label.
value	Reference to the kString being edited.
maxLength	Maximum character count (default 256).
flags	ImGuiInputTextFlags.

Returns: true if the value changed.

◆ inputTextMultiline()

bool kemena::kGuiManager::inputTextMultiline	(	kString	label,
		kString &	value,
		size_t	maxLength = 1024,
		kVec2	size = kVec2(0, 0),
		ImGuiInputTextFlags	flags = 0 )

Renders a multi-line text input field.

Parameters

label	Field label.
value	Reference to the kString being edited.
maxLength	Maximum character count.
size	Widget size (0 = auto).
flags	ImGuiInputTextFlags.

Returns: true if the value changed.

◆ inputTextWithHint()

bool kemena::kGuiManager::inputTextWithHint	(	kString	label,
		kString	hint,
		kString &	value,
		size_t	maxLength = 256,
		ImGuiInputTextFlags	flags = 0 )

Renders a single-line text input with a placeholder hint.

Parameters

label	Field label.
hint	Greyed placeholder text shown when empty.
value	Reference to the kString being edited.
maxLength	Maximum character count.
flags	ImGuiInputTextFlags.

Returns: true if the value changed.

◆ invisibleButton()

bool kemena::kGuiManager::invisibleButton	(	kString	id,
		kVec2	size,
		ImGuiButtonFlags	flags = 0 )

Renders an invisible hit-area button.

Parameters

id	Unique identifier.
size	Button size.
flags	ImGuiButtonFlags.

Returns: true if clicked.

◆ isAnyItemActive()

bool kemena::kGuiManager::isAnyItemActive ( )

Returns whether any widget is currently active.

◆ isAnyItemFocused()

bool kemena::kGuiManager::isAnyItemFocused ( )

Returns whether any widget currently has focus.

◆ isAnyItemHovered()

bool kemena::kGuiManager::isAnyItemHovered ( )

Returns whether any widget is currently hovered.

◆ isItemActivated()

bool kemena::kGuiManager::isItemActivated ( )

Returns whether the last widget became active this frame.

◆ isItemActive()

bool kemena::kGuiManager::isItemActive ( )

Returns whether the last widget is active (e.g. being dragged).

◆ isItemClicked()

bool kemena::kGuiManager::isItemClicked ( ImGuiMouseButton mouseButton = 0 )

Returns whether the last widget was clicked.

Parameters

mouseButton Mouse button index.

◆ isItemDeactivated()

bool kemena::kGuiManager::isItemDeactivated ( )

Returns whether the last widget became inactive this frame.

◆ isItemDeactivatedAfterEdit()

bool kemena::kGuiManager::isItemDeactivatedAfterEdit ( )

Returns whether the last widget became inactive after being edited.

◆ isItemEdited()

bool kemena::kGuiManager::isItemEdited ( )

Returns whether the last widget's value was edited this frame.

◆ isItemFocused()

bool kemena::kGuiManager::isItemFocused ( )

Returns whether the last widget has keyboard focus.

◆ isItemHovered()

bool kemena::kGuiManager::isItemHovered ( ImGuiHoveredFlags flags = 0 )

Returns whether the last widget is hovered.

Parameters

flags ImGuiHoveredFlags.

◆ isItemToggledOpen()

bool kemena::kGuiManager::isItemToggledOpen ( )

Returns whether the last tree node was toggled open.

◆ isItemVisible()

bool kemena::kGuiManager::isItemVisible ( )

Returns whether the last widget is visible in the clipping rectangle.

◆ isKeyCtrl()

bool kemena::kGuiManager::isKeyCtrl ( )

Returns true if the Ctrl modifier key is currently held.

◆ isKeyShift()

bool kemena::kGuiManager::isKeyShift ( )

Returns true if the Shift modifier key is currently held.

◆ isMouseClicked()

bool kemena::kGuiManager::isMouseClicked	(	ImGuiMouseButton	button,
		bool	repeat = false )

Returns whether a mouse button was clicked this frame.

Parameters

button	Button.
repeat	Enable repeat.

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◆ isMouseDoubleClicked()

bool kemena::kGuiManager::isMouseDoubleClicked ( ImGuiMouseButton button )

Returns whether a mouse button was double-clicked this frame.

Parameters

button Button.

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◆ isMouseDown()

bool kemena::kGuiManager::isMouseDown ( ImGuiMouseButton button )

Returns whether a mouse button is held down.

Parameters

button ImGuiMouseButton.

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◆ isMouseHoveringRect()

bool kemena::kGuiManager::isMouseHoveringRect	(	kVec2	rMin,
		kVec2	rMax,
		bool	clip = true )

Returns whether the mouse is inside the given screen-space rectangle.

Parameters

rMin	Top-left corner.
rMax	Bottom-right corner.
clip	Whether to clip by the current window's rect.

◆ isMouseReleased()

bool kemena::kGuiManager::isMouseReleased ( ImGuiMouseButton button )

Returns whether a mouse button was released this frame.

Parameters

button Button.

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◆ isPopupOpen()

bool kemena::kGuiManager::isPopupOpen	(	kString	id,
		ImGuiPopupFlags	flags = 0 )

Returns whether a named popup is currently open.

Parameters

id	Popup identifier.
flags	ImGuiPopupFlags.

Returns: true if open.

◆ isWindowFocused()

bool kemena::kGuiManager::isWindowFocused ( ImGuiFocusedFlags flags = 0 )

Returns whether the current window has keyboard focus.

Parameters

flags ImGuiFocusedFlags.

Returns: true if focused.

◆ isWindowHovered()

bool kemena::kGuiManager::isWindowHovered ( ImGuiHoveredFlags flags = 0 )

Returns whether the mouse is hovering over the current window.

Parameters

flags ImGuiHoveredFlags.

Returns: true if hovered.

◆ labelText()

void kemena::kGuiManager::labelText	(	kString	label,
		kString	text )

Renders a label/value pair aligned to the value column.

Parameters

label	Column label.
text	Value text.

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◆ listBox()

bool kemena::kGuiManager::listBox	(	kString	label,
		int *	currentItem,
		std::vector< kString >	items,
		int	heightInItems = -1 )

Scrollable list box.

Parameters

label	Widget label.
currentItem	Pointer to the selected index.
items	List of option strings.
heightInItems	Visible row count (-1 = auto).

Returns: true if the selection changed.

◆ loadDefaultFontFromResource()

void kemena::kGuiManager::loadDefaultFontFromResource ( kString resourceName )

Loads and sets the default ImGui font from a Windows resource.

Parameters

resourceName Resource identifier for the .ttf font data.

◆ loadIniSettingsFromDisk()

void kemena::kGuiManager::loadIniSettingsFromDisk ( kString filename )

Loads ImGui layout state from a .ini file.

Parameters

filename Path to the .ini file.

◆ loadIniSettingsFromMemory()

void kemena::kGuiManager::loadIniSettingsFromMemory	(	const char *	data,
		size_t	size )

Loads ImGui layout state from an in-memory .ini blob.

Parameters

data	Pointer to the ini text data.
size	Number of bytes to read.

◆ menu()

bool kemena::kGuiManager::menu ( kString text )

Begins a named menu.

Parameters

text	Menu label.

Returns: true if the menu is open.

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◆ menuBar()

bool kemena::kGuiManager::menuBar ( )

Begins the main menu bar.

Returns: true if the bar is visible.

◆ menuBarEnd()

void kemena::kGuiManager::menuBarEnd ( )

Ends the main menu bar.

◆ menuEnd()

void kemena::kGuiManager::menuEnd ( )

Ends the current menu.

◆ menuItem() [1/2]

bool kemena::kGuiManager::menuItem	(	kString	text,
		kString	shortcut,
		bool *	selected,
		bool	enabled = true )

Adds a toggleable menu item backed by a bool.

Parameters

text	Item label.
shortcut	Shortcut hint.
selected	Pointer to the toggle state.
enabled	Whether the item is interactive.

Returns: true if the item was clicked.

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◆ menuItem() [2/2]

bool kemena::kGuiManager::menuItem	(	kString	text,
		kString	shortcut = "",
		bool	selected = false,
		bool	enabled = true )

Adds a clickable menu item.

Parameters

text	Item label.
shortcut	Shortcut hint displayed on the right (display only).
selected	Whether the item appears checked.
enabled	Whether the item is interactive.

Returns: true if the item was clicked.

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◆ newLine()

void kemena::kGuiManager::newLine ( )

Inserts a blank line in the layout.

◆ nextColumn()

void kemena::kGuiManager::nextColumn ( )

Advances to the next column (wraps to the next row when needed).

◆ openPopup()

void kemena::kGuiManager::openPopup	(	kString	id,
		ImGuiPopupFlags	flags = 0 )

Opens a named popup on the next frame.

Parameters

id	Popup identifier.
flags	ImGuiPopupFlags.

◆ popFont()

void kemena::kGuiManager::popFont ( )

Pops the last font from the font stack.

◆ popId()

void kemena::kGuiManager::popId ( )

Pops the last ID from the ID stack.

◆ popItemWidth()

void kemena::kGuiManager::popItemWidth ( )

Pops the last item width from the stack.

◆ popStyleColor()

void kemena::kGuiManager::popStyleColor ( int count = 1 )

Pops colour overrides from the style stack.

Parameters

count Number of colour entries to pop (default 1).

◆ popStyleVar()

void kemena::kGuiManager::popStyleVar ( int count = 1 )

Pops style variable overrides from the stack.

Parameters

count Number of entries to pop (default 1).

◆ popTextWrapPos()

void kemena::kGuiManager::popTextWrapPos ( )

Pops the last text wrap position.

◆ popupContextItemStart()

bool kemena::kGuiManager::popupContextItemStart	(	kString	id = "",
		ImGuiPopupFlags	flags = ImGuiPopupFlags_MouseButtonRight )

Begins a context menu popup on right-click of the last item.

Parameters

id	Popup identifier.
flags	ImGuiPopupFlags.

Returns: true if the context menu opened.

◆ popupContextWindowStart()

bool kemena::kGuiManager::popupContextWindowStart	(	kString	id = "",
		ImGuiPopupFlags	flags = ImGuiPopupFlags_MouseButtonRight )

Begins a context menu popup on right-click of the current window.

Parameters

id	Popup identifier.
flags	ImGuiPopupFlags.

Returns: true if the context menu opened.

◆ popupEnd()

void kemena::kGuiManager::popupEnd ( )

Ends the current popup.

◆ popupModal()

bool kemena::kGuiManager::popupModal	(	kString	name,
		bool *	open = nullptr,
		ImGuiWindowFlags	flags = 0 )

Begins a modal popup dialog.

Parameters

name	Dialog title.
open	Optional pointer to the open/close bool.
flags	ImGuiWindowFlags.

Returns: true while the modal is open.

◆ popupStart()

bool kemena::kGuiManager::popupStart	(	kString	id,
		ImGuiWindowFlags	flags = 0 )

Begins rendering a named popup.

Parameters

id	Popup identifier.
flags	ImGuiWindowFlags.

Returns: true if the popup is open.

◆ processEvent()

void kemena::kGuiManager::processEvent ( kSystemEvent event )

Forwards a system event to ImGui for input processing.

Parameters

event Engine event struct wrapping the underlying SDL event.

◆ progressBar()

void kemena::kGuiManager::progressBar	(	float	fraction,
		kVec2	size = kVec2(-FLT_MIN, 0),
		kString	overlay = "" )

Renders a horizontal progress bar.

Parameters

fraction	Value in [0, 1] representing progress.
size	Bar size (-FLT_MIN width = fill available).
overlay	Optional text drawn over the bar.

◆ pushFont()

void kemena::kGuiManager::pushFont ( ImFont * font )

Pushes a font onto the font stack.

Parameters

font	ImFont pointer loaded via ImGui::GetIO().Fonts.

◆ pushId() [1/3]

void kemena::kGuiManager::pushId ( const void * ptr )

Pushes a pointer ID onto the ID stack.

Parameters

ptr	Pointer used as ID.

◆ pushId() [2/3]

void kemena::kGuiManager::pushId ( int id )

Pushes an integer ID onto the ID stack.

Parameters

id	Integer ID.

◆ pushId() [3/3]

void kemena::kGuiManager::pushId ( kString id )

Pushes a kString ID onto the ID stack.

Parameters

id	ID kString.

◆ pushItemWidth()

void kemena::kGuiManager::pushItemWidth ( float itemWidth )

Pushes a width onto the item-width stack.

Parameters

itemWidth Width in pixels.

◆ pushStyleColor() [1/2]

void kemena::kGuiManager::pushStyleColor	(	ImGuiCol	idx,
		ImU32	color )

Pushes a packed colour override.

Parameters

idx	ImGuiCol element.
color	Packed ABGR colour.

◆ pushStyleColor() [2/2]

void kemena::kGuiManager::pushStyleColor	(	ImGuiCol	idx,
		kVec4	color )

Pushes a colour override for an ImGui style element.

Parameters

idx	ImGuiCol element to override.
color	RGBA colour.

◆ pushStyleVar() [1/2]

void kemena::kGuiManager::pushStyleVar	(	ImGuiStyleVar	idx,
		float	val )

Pushes a float style variable override.

Parameters

idx	ImGuiStyleVar to override.
val	New value.

◆ pushStyleVar() [2/2]

void kemena::kGuiManager::pushStyleVar	(	ImGuiStyleVar	idx,
		kVec2	val )

Pushes a kVec2 style variable override.

Parameters

idx	ImGuiStyleVar to override.
val	New value.

◆ pushTextWrapPos()

void kemena::kGuiManager::pushTextWrapPos ( float wrapLocalPosX = 0.0f )

Pushes a text wrap position onto the stack.

Parameters

wrapLocalPosX X position to wrap at (0 = wrap at window right).

◆ radioButton() [1/2]

bool kemena::kGuiManager::radioButton	(	kString	label,
		bool	active )

Renders a radio button.

Parameters

label	Button label.
active	Whether this button is currently selected.

Returns: true if clicked.

◆ radioButton() [2/2]

bool kemena::kGuiManager::radioButton	(	kString	label,
		int *	v,
		int	vButton )

Renders a radio button linked to an integer variable.

Parameters

label	Button label.
v	Pointer to the current selection value.
vButton	Value this button represents.

Returns: true if clicked.

◆ sameLine()

void kemena::kGuiManager::sameLine	(	float	offsetFromStartX = 0.0f,
		float	spacing = -1.0f )

Places the next widget on the same line as the previous one.

Parameters

offsetFromStartX	Horizontal offset from the left edge (0 = auto).
spacing	Spacing override (-1 = default).

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◆ saveIniSettingsToDisk()

void kemena::kGuiManager::saveIniSettingsToDisk ( kString filename )

Saves the current ImGui layout state to a .ini file.

Parameters

filename Path to the .ini file.

◆ selectable() [1/2]

bool kemena::kGuiManager::selectable	(	kString	label,
		bool *	pSelected,
		ImGuiSelectableFlags	flags = 0,
		kVec2	size = kVec2(0, 0) )

Selectable row (state passed by pointer).

Parameters

label	Row label.
pSelected	Pointer to the selection bool.
flags	ImGuiSelectableFlags.
size	Row size.

Returns: true if clicked.

◆ selectable() [2/2]

bool kemena::kGuiManager::selectable	(	kString	label,
		bool	selected = false,
		ImGuiSelectableFlags	flags = 0,
		kVec2	size = kVec2(0, 0) )

Selectable row (state passed by value).

Parameters

label	Row label.
selected	Whether this row is currently selected.
flags	ImGuiSelectableFlags.
size	Row size (0 = fill available).

Returns: true if clicked.

◆ separator()

void kemena::kGuiManager::separator ( )

Draws a horizontal separator line.

◆ separatorText()

void kemena::kGuiManager::separatorText ( kString text )

Draws a horizontal separator with a centred text label.

Parameters

text	Label to display.

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◆ setClipboardText()

void kemena::kGuiManager::setClipboardText ( kString text )

Sets the OS clipboard text.

Parameters

text	Text to place in the clipboard.

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◆ setColorEditOptions()

void kemena::kGuiManager::setColorEditOptions ( ImGuiColorEditFlags flags )

Sets global colour edit display options.

Parameters

flags ImGuiColorEditFlags combination.

◆ setCursorPos()

void kemena::kGuiManager::setCursorPos ( kVec2 pos )

Moves the cursor to an absolute position within the window.

Parameters

pos	Position relative to the window content region.

◆ setCursorPosX()

void kemena::kGuiManager::setCursorPosX ( float x )

Sets the cursor X position.

Parameters

x	X offset in pixels.

◆ setCursorPosY()

void kemena::kGuiManager::setCursorPosY ( float y )

Sets the cursor Y position.

Parameters

y	Y offset in pixels.

◆ setCursorScreenPos()

void kemena::kGuiManager::setCursorScreenPos ( kVec2 pos )

Moves the cursor to an absolute screen-space position.

Parameters

pos	Absolute screen-space coordinates.

◆ setItemTooltip()

void kemena::kGuiManager::setItemTooltip ( kString text )

Sets a tooltip shown when the last item is hovered.

Parameters

text	Tooltip text.

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◆ setNextItemAllowOverlap()

void kemena::kGuiManager::setNextItemAllowOverlap ( )

Allows the next item to overlap previously drawn items. Call this before the item that should allow overlap.

◆ setNextItemOpen()

void kemena::kGuiManager::setNextItemOpen	(	bool	isOpen,
		ImGuiCond	cond = 0 )

Sets the open state of the next tree node.

Parameters

isOpen	Whether the node should be open.
cond	Condition flag.

◆ setNextItemWidth()

void kemena::kGuiManager::setNextItemWidth ( float itemWidth )

Sets the width of the next widget.

Parameters

itemWidth Width in pixels (negative values right-align).

◆ setNextWindowBgAlpha()

void kemena::kGuiManager::setNextWindowBgAlpha ( float alpha )

Sets the background transparency of the next window.

Parameters

alpha Alpha value in [0, 1].

◆ setNextWindowCollapsed()

void kemena::kGuiManager::setNextWindowCollapsed	(	bool	collapsed,
		ImGuiCond	cond = 0 )

Sets the collapsed state of the next window.

Parameters

collapsed	true to start collapsed.
cond	Condition flag.

◆ setNextWindowContentSize()

void kemena::kGuiManager::setNextWindowContentSize ( kVec2 size )

Sets the content size of the next window.

Parameters

size	Content region size in pixels.

◆ setNextWindowFocus()

void kemena::kGuiManager::setNextWindowFocus ( )

Gives input focus to the next window.

◆ setNextWindowPos()

void kemena::kGuiManager::setNextWindowPos	(	kVec2	pos,
		ImGuiCond	cond = 0,
		kVec2	pivot = kVec2(0, 0) )

Sets the position of the next window before it is created.

Parameters

pos	Desired screen-space position.
cond	Condition flag.
pivot	Normalised pivot point within the window.

◆ setNextWindowSize()

void kemena::kGuiManager::setNextWindowSize	(	kVec2	size,
		ImGuiCond	cond = 0 )

Sets the size of the next window before it is created.

Parameters

size	Desired window size in pixels.
cond	Condition flag (ImGuiCond).

◆ setScrollHereX()

void kemena::kGuiManager::setScrollHereX ( float centerXRatio = 0.5f )

Scrolls so the current item is visible horizontally.

Parameters

centerXRatio 0 = left edge, 0.5 = centre, 1 = right edge.

◆ setScrollHereY()

void kemena::kGuiManager::setScrollHereY ( float centerYRatio = 0.5f )

Scrolls so the current item is visible vertically.

Parameters

centerYRatio 0 = top edge, 0.5 = centre, 1 = bottom edge.

◆ setScrollX()

void kemena::kGuiManager::setScrollX ( float scrollX )

Sets the horizontal scroll position.

Parameters

scrollX Target position.

◆ setScrollY()

void kemena::kGuiManager::setScrollY ( float scrollY )

Sets the vertical scroll position.

Parameters

scrollY Target position.

◆ setTabItemClosed()

void kemena::kGuiManager::setTabItemClosed ( kString tabOrDockedWindowLabel )

Marks a tab (or docked window) as closed programmatically.

Parameters

tabOrDockedWindowLabel Label of the tab or window to close.

◆ sliderAngle()

bool kemena::kGuiManager::sliderAngle	(	kString	label,
		float *	vRad,
		float	vDegreesMin = -360.0f,
		float	vDegreesMax = 360.0f,
		kString	format = "%.0f deg",
		ImGuiSliderFlags	flags = 0 )

Horizontal slider that displays and edits an angle in degrees.

Returns: true if changed.

◆ sliderFloat()

bool kemena::kGuiManager::sliderFloat	(	kString	label,
		float *	v,
		float	min,
		float	max,
		kString	format = "%.3f",
		ImGuiSliderFlags	flags = 0 )

Horizontal slider for a single float.

Returns: true if changed.

◆ sliderFloat2()

bool kemena::kGuiManager::sliderFloat2	(	kString	label,
		float	v[2],
		float	min,
		float	max,
		kString	format = "%.3f",
		ImGuiSliderFlags	flags = 0 )

Horizontal slider for two floats.

Returns: true if changed.

◆ sliderFloat3()

bool kemena::kGuiManager::sliderFloat3	(	kString	label,
		float	v[3],
		float	min,
		float	max,
		kString	format = "%.3f",
		ImGuiSliderFlags	flags = 0 )

Horizontal slider for three floats.

Returns: true if changed.

◆ sliderFloat4()

bool kemena::kGuiManager::sliderFloat4	(	kString	label,
		float	v[4],
		float	min,
		float	max,
		kString	format = "%.3f",
		ImGuiSliderFlags	flags = 0 )

Horizontal slider for four floats.

Returns: true if changed.

◆ sliderInt()

bool kemena::kGuiManager::sliderInt	(	kString	label,
		int *	v,
		int	min,
		int	max,
		kString	format = "%d",
		ImGuiSliderFlags	flags = 0 )

Horizontal slider for a single integer.

Returns: true if changed.

◆ sliderInt2()

bool kemena::kGuiManager::sliderInt2	(	kString	label,
		int	v[2],
		int	min,
		int	max,
		kString	format = "%d",
		ImGuiSliderFlags	flags = 0 )

Horizontal slider for two integers.

Returns: true if changed.

◆ sliderInt3()

bool kemena::kGuiManager::sliderInt3	(	kString	label,
		int	v[3],
		int	min,
		int	max,
		kString	format = "%d",
		ImGuiSliderFlags	flags = 0 )

Horizontal slider for three integers.

Returns: true if changed.

◆ sliderInt4()

bool kemena::kGuiManager::sliderInt4	(	kString	label,
		int	v[4],
		int	min,
		int	max,
		kString	format = "%d",
		ImGuiSliderFlags	flags = 0 )

Horizontal slider for four integers.

Returns: true if changed.

◆ smallButton()

bool kemena::kGuiManager::smallButton ( kString text )

Renders a small inline push-button.

Parameters

text	Label text.

Returns: true if clicked.

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◆ spacing()

void kemena::kGuiManager::spacing ( )

Inserts a small vertical space.

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◆ tabBarEnd()

void kemena::kGuiManager::tabBarEnd ( )

Ends the current tab bar.

◆ tabBarStart()

bool kemena::kGuiManager::tabBarStart	(	kString	id,
		ImGuiTabBarFlags	flags = 0 )

Begins a tab bar container.

Parameters

id	Unique identifier.
flags	ImGuiTabBarFlags.

Returns: true if the tab bar is visible.

◆ tabItemEnd()

void kemena::kGuiManager::tabItemEnd ( )

Ends the current tab item.

◆ tabItemStart()

bool kemena::kGuiManager::tabItemStart	(	kString	label,
		bool *	open = nullptr,
		ImGuiTabItemFlags	flags = 0 )

Begins a tab item inside a tab bar.

Parameters

label	Item label.
open	Optional pointer to a bool controlling the close button.
flags	ImGuiTabItemFlags.

Returns: true if this tab is active.

◆ tableEnd()

void kemena::kGuiManager::tableEnd ( )

Ends the current table.

◆ tableHeader()

void kemena::kGuiManager::tableHeader ( kString label )

Renders a single header cell.

Parameters

label Header cell label.

◆ tableHeadersRow()

void kemena::kGuiManager::tableHeadersRow ( )

Renders the header row using labels set by tableSetupColumn().

◆ tableNextColumn()

bool kemena::kGuiManager::tableNextColumn ( )

Advances to the next column in the current row.

Returns: true if the column is visible.

◆ tableNextRow()

void kemena::kGuiManager::tableNextRow	(	ImGuiTableRowFlags	rowFlags = 0,
		float	minRowHeight = 0.0f )

Begins a new table row.

Parameters

rowFlags	ImGuiTableRowFlags.
minRowHeight	Minimum row height in pixels.

◆ tableSetColumnIndex()

bool kemena::kGuiManager::tableSetColumnIndex ( int columnN )

Sets the current column index explicitly.

Parameters

columnN Zero-based column index.

Returns: true if the column is visible.

◆ tableSetupColumn()

void kemena::kGuiManager::tableSetupColumn	(	kString	label,
		ImGuiTableColumnFlags	flags = 0,
		float	initWidthOrWeight = 0.0f )

Sets up a table column with optional flags and initial width.

Parameters

label	Column header label.
flags	ImGuiTableColumnFlags.
initWidthOrWeight	Initial width (fixed) or weight (stretch).

◆ tableSetupScrollFreeze()

void kemena::kGuiManager::tableSetupScrollFreeze	(	int	cols,
		int	rows )

Freezes leading columns/rows so they remain visible while scrolling.

Parameters

cols	Number of columns to freeze.
rows	Number of rows to freeze.

◆ tableStart()

bool kemena::kGuiManager::tableStart	(	kString	id,
		int	columns,
		ImGuiTableFlags	flags = 0,
		kVec2	outerSize = kVec2(0, 0),
		float	innerWidth = 0.0f )

Begins a table layout.

Parameters

id	Unique identifier.
columns	Number of columns.
flags	ImGuiTableFlags.
outerSize	Outer size constraint (0 = auto).
innerWidth	Inner horizontal scrolling width.

Returns: true if the table is visible.

◆ text()

void kemena::kGuiManager::text ( kString text )

Renders a plain text kString.

Parameters

text	Text to display.

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◆ textColored()

void kemena::kGuiManager::textColored	(	kVec4	color,
		kString	text )

Renders coloured text.

Parameters

color	RGBA text colour.
text	Text to display.

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◆ textDisabled()

void kemena::kGuiManager::textDisabled ( kString text )

Renders greyed-out (disabled) text.

Parameters

text	Text to display.

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◆ textUnformatted()

void kemena::kGuiManager::textUnformatted ( kString text )

Renders a raw string without label formatting.

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◆ textWrapped()

void kemena::kGuiManager::textWrapped ( kString text )

Renders text that wraps at the wrap position.

Parameters

text Text.

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◆ treeEnd()

void kemena::kGuiManager::treeEnd ( )

Ends the current tree node (use when treeStart returned true).

◆ treePop()

void kemena::kGuiManager::treePop ( )

Pops the tree indent regardless of whether the node is open.

◆ treeStart()

bool kemena::kGuiManager::treeStart ( kString label )

Begins a tree node (uses label as ID).

Parameters

label Node label.

Returns: true if the node is expanded.

◆ treeStartEx()

bool kemena::kGuiManager::treeStartEx	(	kString	id,
		kString	label = "",
		ImGuiTreeNodeFlags	flags = 0 )

Begins a tree node with explicit ID and label.

Parameters

id	Unique ID kString.
label	Display label (empty = use id).
flags	ImGuiTreeNodeFlags.

Returns: true if the node is expanded.

◆ unindent()

void kemena::kGuiManager::unindent ( float indentW = 0.0f )

Moves the cursor left by indentW pixels.

Parameters

indentW Unindent width (0 = use style default).

◆ windowEnd()

void kemena::kGuiManager::windowEnd ( )

Ends the current ImGui window.

◆ windowStart()

void kemena::kGuiManager::windowStart	(	kString	title,
		bool *	open = nullptr,
		ImGuiWindowFlags	flags = 0 )

Begins an ImGui window.

Parameters

title	Window title bar text.
open	Optional pointer to a bool controlling visibility; nullptr to ignore.
flags	ImGuiWindowFlags combination.

The documentation for this class was generated from the following file:

Source/include/kguimanager.h

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ kGuiManager()

◆ ~kGuiManager()

Member Function Documentation

◆ addSettingsHandler()

◆ alignTextToFramePadding()

◆ arrowButton()

◆ beginDisabled()

◆ beginTooltip()

◆ bullet()

◆ bulletText()

◆ button()

◆ calcItemWidth()

◆ calcTextSize()

◆ canvasEnd()

◆ canvasStart()

◆ checkbox()

◆ checkboxFlags() [1/2]

◆ checkboxFlags() [2/2]

◆ childEnd()

◆ childStart()

◆ closeCurrentPopup()

◆ collapsingHeader() [1/2]

◆ collapsingHeader() [2/2]

◆ colorButton()

◆ colorEdit3()

◆ colorEdit4()

◆ colorPicker3()

◆ colorPicker4()

◆ columnsEnd()

◆ columnsStart()

◆ combo()

◆ destroy()

◆ dockSpaceEnd()

◆ dockSpaceStart()

◆ dragFloat()

◆ dragFloat2()

◆ dragFloat3()

◆ dragFloat4()

◆ dragFloatRange2()

◆ dragInt()

◆ dragInt2()

◆ dragInt3()

◆ dragInt4()

◆ dragIntRange2()

◆ drawListAddImage()

◆ dummy()

◆ endDisabled()

◆ endTooltip()

◆ getColumnWidth()

◆ getContentRegionAvail()

◆ getCursorPos()

◆ getCursorPosX()

◆ getCursorPosY()

◆ getCursorScreenPos()

◆ getDeltaTime()

◆ getFontSize()

◆ getFrameHeight()

◆ getFrameHeightWithSpacing()

◆ getItemRectMax()

◆ getItemRectMin()

◆ getItemRectSize()

◆ getMainViewportCenter()

◆ getMouseDelta()

◆ getMousePos()

◆ getMouseWheel()

◆ getScrollMaxX()

◆ getScrollMaxY()

◆ getScrollX()

◆ getScrollY()

◆ getTextLineHeight()

◆ getWantTextInput()

◆ getWindowContentRegionMax()

◆ getWindowContentRegionMin()

◆ getWindowPos()

◆ getWindowSize()

◆ groupEnd()

◆ groupStart()