TODO + added missing _None enum for some internals flags.

TODO.txt

@@ -40,9 +40,10 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
  - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
  - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
  - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
  - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
+ - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
 
  - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
  - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
@@ -54,6 +55,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
  - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
  - widgets: add always-allow-overlap mode.
+ - widgets: start exposing PushItemFlag() and ImGuiItemFlags
  - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
  - widgets: activate by identifier (trigger button, focus given id)
  - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
@@ -70,13 +72,13 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
  - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
  - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
+ - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
+ - input text: what's the easiest way to implement a nice IP/Mac address input editor?
  - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
  - input text multi-line: support for cut/paste without selection (cut/paste the current line)
  - input text multi-line: line numbers? status bar? (follow up on #200)
  - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
  - input text multi-line: better horizontal scrolling support (#383, #1224)
- - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
  - input number: optional range min/max for Input*() functions
  - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
  - input number: use mouse wheel to step up/down
@@ -104,7 +106,6 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
 
 !- color: the color conversion helpers/types are a mess and needs sorting out. 
  - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
- - coloredit: it is still somehow awkward to copy colors around (unless going through Hex mode).
 
  - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
  - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
@@ -126,17 +127,17 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
 
  - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
 
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapped for std::string, std::vector etc.
+ - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
 
  - button: provide a button that looks framed.
  - image/image button: misalignment on padded/bordered button?
  - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
  - image button: not taking an explicit id is odd.
  - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar).
+ - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
  - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
  - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- - slider: precision dragging
+ - slider: relative dragging? + precision dragging
  - slider: step option (#1183)
  - slider style: fill % of the bar instead of positioning a drag.
  - knob: rotating knob widget (#942)
@@ -168,12 +169,12 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed) (#1485)
  
  - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
- - menus: menu bars inside modals windows are acting weird.
- - statusbar: add a per-window status bar helper similar to what menubar does.
+ - menus: menu bars inside modal windows are acting weird.
+ - status-bar: add a per-window status bar helper similar to what menu-bar does.
  - shortcuts: local-style shortcut api, e.g. parse "&Save"
  - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
  - shortcuts: programmatically access shortcuts "Focus("&Save"))
- - menus: menubars: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
+ - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
  - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
 
  - text: selectable text (for copy) as a generic feature (ItemFlags?)
@@ -198,7 +199,6 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
 !- style: better default styles. (#707)
  - style: add a highlighted text color (for headers, etc.)
  - style: border types: out-screen, in-screen, etc. (#447)
- - style/optimization: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding.
  - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
  - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
  - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
@@ -214,15 +214,15 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
 
  - filters: set a current filter that tree node can automatically query to hide themselves
- - filters: handle wildcards (with implicit leading/trailing *), regexps
+ - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
  - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
 
- - drag and drop: add demo. (#143, #479)
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
  - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
  - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
  - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
- - drag and drop: test integrating with os drag and drop.
+ - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
  - drag and drop: make payload optional? (#143)
  - node/graph editor (#306)
  - pie menus patterns (#434)
@@ -251,15 +251,16 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - font: fix AddRemapChar() to work before font has been built.
  - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
 
- - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.)
+ - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
  - nav: patterns to make it possible for arrows key to update selection
+ - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
  - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
  - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
  - nav: ESC within a menu of a child window seems to exit the child window.
  - nav: NavFlattened: ESC on a flattened child should select something.
  - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
  - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- - nav: NavFlattened: cannot access menubar of a flattened child window with Alt/menu key (not a very common use case..).
+ - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
  - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
  - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
  - nav: menus: allow pressing Menu to leave a sub-menu.
@@ -290,19 +291,17 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
 
  - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
  - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: tweak OpenGL renderers to support OpenGL ES. (#1713, #336)
  - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
 
  - remote: make a system like RemoteImGui first-class citizen/project (#75)
 
  - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
- - demo: add drag and drop demo.
  - demo: add vertical separator demo
  - demo: add virtual scrolling example?
  - demo: demonstration Plot offset
  - examples: window minimize, maximize (#583)
- - examples: provide a zero-framerate/idle example.
- - examples: apple: apple_example should be using modern GL3.
+ - examples: provide a zero frame-rate/idle example.
+ - examples: apple: example_apple should be using modern GL3.
  - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
  - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
  - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.

imgui_internal.h

@@ -313,6 +313,7 @@ enum ImGuiInputReadMode
 
 enum ImGuiNavHighlightFlags_
 {
+    ImGuiNavHighlightFlags_None         = 0,
     ImGuiNavHighlightFlags_TypeDefault  = 1 << 0,
     ImGuiNavHighlightFlags_TypeThin     = 1 << 1,
     ImGuiNavHighlightFlags_AlwaysDraw   = 1 << 2,
@@ -321,6 +322,7 @@ enum ImGuiNavHighlightFlags_
 
 enum ImGuiNavDirSourceFlags_
 {
+    ImGuiNavDirSourceFlags_None         = 0,
     ImGuiNavDirSourceFlags_Keyboard     = 1 << 0,
     ImGuiNavDirSourceFlags_PadDPad      = 1 << 1,
     ImGuiNavDirSourceFlags_PadLStick    = 1 << 2
@@ -328,6 +330,7 @@ enum ImGuiNavDirSourceFlags_
 
 enum ImGuiNavMoveFlags_
 {
+    ImGuiNavMoveFlags_None                  = 0,
     ImGuiNavMoveFlags_LoopX                 = 1 << 0,   // On failed request, restart from opposite side
     ImGuiNavMoveFlags_LoopY                 = 1 << 1,
     ImGuiNavMoveFlags_WrapX                 = 1 << 2,   // On failed request, request from opposite side one line down (when NavDir==right) or one line up (when NavDir==left)