We don't use g.FontSize because the window may be != g.CurrentWindow.

EXPERIMENTAL. Use ImTextureDataQueueUpload() to queue updates.

Deferred removal, avoiding issue with changing vector while iterating it

Prepare the data for rendering so you can call GetDrawData() (As with anything within the ImGui:: namespace this doesn't touch your GPU or graphics AP

Render an arrow aimed to be aligned with text (p_min is a position in the same space text would be positioned). To e.g. denote expanded/collapsed stat

Render an arrow. 'pos' is position of the arrow tip. half_sz.x is length from base to tip. half_sz.y is length on each side.

Helper for ColorPicker4() NB: This is rather brittle and will show artifact when rounding this enabled if rounded corners overlap multiple cells. Call

FIXME-STYLE FIXME-DRAGDROP: Settle on a proper default visuals for drop target.

Render a rectangle shaped with optional rounding and borders

FIXME: Cleanup and move code to ImDrawList. - Before 2025-12-04: RenderRectFilledRangeH() with 'float x_start_norm, float x_end_norm` <- normalized

Default clip_rect uses (pos_min,pos_max) Handle clipping on CPU immediately (vs typically let the GPU clip the triangles that are overlapping the clip

Another overly complex function until we reorganize everything into a nice all-in-one helper. This is made more complex because we have dissociated th

Draw background and borders Draw and handle scrollbars

Render title text, collapse button, close button

Clear all unlock/counter state so progress shows "???" again, not called automatically

* Determine if a unsigned 32-bit value has exactly one bit set. * * If there are no bits set (`x` is zero), or more than one bit set, this * return

* Get the index of the most significant (set) bit in a 32-bit number. * * This operation can also be stated as "count leading zeroes" and "log base

* Determine whether a point resides inside a rectangle. * * A point is considered part of a rectangle if both `p` and `r` are not NULL, * and `p`'s

* Determine whether a point resides inside a floating point rectangle. * * A point is considered part of a rectangle if both `p` and `r` are not NUL

* Determine whether a rectangle has no area. * * A rectangle is considered "empty" for this function if `r` is NULL, or if * `r`'s width and/or hei

* Determine whether a floating point rectangle takes no space. * * A rectangle is considered "empty" for this function if `r` is NULL, or if * `r`'

* Convert an SDL_Rect to SDL_FRect * * \param rect a pointer to an SDL_Rect. * \param frect a pointer filled in with the floating point representat

* Determine whether two rectangles are equal. * * Rectangles are considered equal if both are not NULL and each of their x, * y, width and height m

* Determine whether two floating point rectangles are equal, within a default * epsilon. * * Rectangles are considered equal if both are not NULL a

* Byte-swap a floating point number. * * This will always byte-swap the value, whether it's currently in the native * byteorder of the system or no

* Add two integers, checking for overflow. * * If `a + b` would overflow, return false. * * Otherwise store `a + b` via ret and return true. * *

This needs to be wrapped in an inline rather than being a direct #define, * the same as the call to __builtin_mul_overflow() above. */

* Multiply two integers, checking for overflow. * * If `a * b` would overflow, return false. * * Otherwise store `a * b` via ret and return true.

This needs to be wrapped in an inline rather than being a direct #define, * because __builtin_mul_overflow() is type-generic, but we want to be * co

Reimplementation of stb_textedit_move_line_start()/stb_textedit_move_line_end() which supports word-wrapping.

Call registered handlers (e.g. SettingsHandlerWindow_WriteAll() + custom handlers) to write their stuff into a text buffer

Helper to scale the ClipRect field of each ImDrawCmd. Use if your final output buffer is at a different scale than draw_data->DisplaySize, or if there

Scale all windows (position, size). Use when e.g. changing DPI. (This is a lossy operation!)

ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS

Scroll to keep newly navigated item fully into view

Vertical/Horizontal scrollbar The entire piece of code below is rather confusing because: - We handle absolute seeking (when first clicking outside th

Tip: pass a non-visible label (e.g. "##hello") then you can use the space to draw other text or image. But you need to make sure the ID is unique, e.g

Horizontal/vertical separating line FIXME: Surprisingly, this seemingly trivial widget is a victim of many different legacy/tricky layout issues. Note

This is a shortcut for not taking ownership of 100+ keys, frequently used by drag operations. FIXME: It might be undesirable that this will likely dis

Set master flag for accepting key/mouse/text events (default to true). Useful if you have native dialog boxes that are interrupting your application l

Get bit n in the array

Initialize/override default color options FIXME: Could be moved to a simple IO field.