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WIP: tabs, docking, dragdrop, settings, logging, harness

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4DBug
2026-10-08 05:35:25 -05:00
parent 693ced0511
commit fee9a84902
26 changed files with 128896 additions and 1836 deletions
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imgui/imgui_draw.lua
+218 -1
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@@ -137,6 +137,8 @@ function ImGui.StyleColorsDark(dst)
colors[ImGuiCol.TabDimmed] = ImLerpV4V4F(colors[ImGuiCol.Tab], colors[ImGuiCol.TitleBg], 0.80)
colors[ImGuiCol.TabDimmedSelected] = ImLerpV4V4F(colors[ImGuiCol.TabSelected], colors[ImGuiCol.TitleBg], 0.40)
colors[ImGuiCol.TabDimmedSelectedOverline] = ImVec4(0.50, 0.50, 0.50, 0.00)
colors[ImGuiCol.DockingPreview] = ImVec4(colors[ImGuiCol.HeaderActive].x, colors[ImGuiCol.HeaderActive].y, colors[ImGuiCol.HeaderActive].z, colors[ImGuiCol.HeaderActive].w * 0.7)
colors[ImGuiCol.DockingEmptyBg] = ImVec4(0.20, 0.20, 0.20, 1.00)
colors[ImGuiCol.PlotLines] = ImVec4(0.61, 0.61, 0.61, 1.00)
colors[ImGuiCol.PlotLinesHovered] = ImVec4(1.00, 0.43, 0.35, 1.00)
colors[ImGuiCol.PlotHistogram] = ImVec4(0.90, 0.70, 0.00, 1.00)
@@ -205,6 +207,8 @@ function ImGui.StyleColorsClassic(dst)
colors[ImGuiCol.TabDimmed] = ImLerpV4V4F(colors[ImGuiCol.Tab], colors[ImGuiCol.TitleBg], 0.80)
colors[ImGuiCol.TabDimmedSelected] = ImLerpV4V4F(colors[ImGuiCol.TabSelected], colors[ImGuiCol.TitleBg], 0.40)
colors[ImGuiCol.TabDimmedSelectedOverline] = ImVec4(0.53, 0.53, 0.87, 0.00)
colors[ImGuiCol.DockingPreview] = ImVec4(colors[ImGuiCol.Header].x, colors[ImGuiCol.Header].y, colors[ImGuiCol.Header].z, colors[ImGuiCol.Header].w * 0.7)
colors[ImGuiCol.DockingEmptyBg] = ImVec4(0.20, 0.20, 0.20, 1.00)
colors[ImGuiCol.PlotLines] = ImVec4(1.00, 1.00, 1.00, 1.00)
colors[ImGuiCol.PlotLinesHovered] = ImVec4(0.90, 0.70, 0.00, 1.00)
colors[ImGuiCol.PlotHistogram] = ImVec4(0.90, 0.70, 0.00, 1.00)
@@ -274,6 +278,8 @@ function ImGui.StyleColorsLight(dst)
colors[ImGuiCol.TabDimmed] = ImLerpV4V4F(colors[ImGuiCol.Tab], colors[ImGuiCol.TitleBg], 0.80)
colors[ImGuiCol.TabDimmedSelected] = ImLerpV4V4F(colors[ImGuiCol.TabSelected], colors[ImGuiCol.TitleBg], 0.40)
colors[ImGuiCol.TabDimmedSelectedOverline] = ImVec4(0.26, 0.59, 1.00, 0.00)
colors[ImGuiCol.DockingPreview] = ImVec4(colors[ImGuiCol.Header].x, colors[ImGuiCol.Header].y, colors[ImGuiCol.Header].z, colors[ImGuiCol.Header].w * 0.7)
colors[ImGuiCol.DockingEmptyBg] = ImVec4(0.68, 0.69, 0.73, 1.00)
colors[ImGuiCol.PlotLines] = ImVec4(0.39, 0.39, 0.39, 1.00)
colors[ImGuiCol.PlotLinesHovered] = ImVec4(1.00, 0.43, 0.35, 1.00)
colors[ImGuiCol.PlotHistogram] = ImVec4(0.90, 0.70, 0.00, 1.00)
@@ -328,6 +334,18 @@ function ImGui.ShadeVertsLinearColorGradientKeepAlpha(draw_list, vert_start_idx,
end
end
-- Rotate and translate vertices [vert_start_idx, vert_end_idx) (1-based, like _VtxCurrentIdx)
function ImGui.ShadeVertsTransformPos(draw_list, vert_start_idx, vert_end_idx, pivot_in, cos_a, sin_a, pivot_out)
local data = draw_list.VtxBuffer.Data
local pix, piy, pox, poy = pivot_in.x, pivot_in.y, pivot_out.x, pivot_out.y
for i = vert_start_idx, vert_end_idx - 1 do
local pos = data[i][1]
local x, y = pos[1] - pix, pos[2] - piy
pos[1] = x * cos_a - y * sin_a + pox
pos[2] = x * sin_a + y * cos_a + poy
end
end
-- Distribute UV over (a, b) rectangle
--- @param draw_list ImDrawList
--- @param vert_start_idx int
@@ -3145,7 +3163,7 @@ function MT.ImDrawList:_ClearFreeMemory()
self._TextureStack:clear()
-- self._CallbacksDataBuf:clear()
self._Path:clear()
-- self._Splitter.ClearFreeMemory()
self._Splitter:ClearFreeMemory()
end
function MT.ImDrawList:AddDrawCmd()
@@ -3312,6 +3330,184 @@ function MT.ImDrawList:_OnChangedVtxOffset()
curr_cmd.VtxOffset = self._CmdHeader.VtxOffset
end
----------------------------------------------------------------
-- [SECTION] ImDrawListSplitter
----------------------------------------------------------------
-- Lua: channels swap ImVector objects with the draw list (C++ memcpy of the vector headers).
-- Channel 0 holds nothing while it is the current channel (its buffers live in the draw list).
-- Copy ClipRect, TexRef, VtxOffset (TexRef is assigned by reference, never mutated)
local function ImDrawCmd_HeaderCopyRef(dst, src)
ImVec4_Copy(dst.ClipRect, src.ClipRect)
dst.TexRef = src.TexRef
dst.VtxOffset = src.VtxOffset
end
function MT.ImDrawListSplitter:Clear()
self._Current = 0
self._Count = 1
end
function MT.ImDrawListSplitter:ClearFreeMemory()
for i = 1, self._Channels.Size do
local ch = self._Channels.Data[i]
if i - 1 == self._Current then
-- Current channel is a copy of CmdBuffer/IdxBuffer, don't destruct again
self._Channels.Data[i] = ImDrawChannel()
else
ch._CmdBuffer:clear()
ch._IdxBuffer:clear()
end
end
self._Current = 0
self._Count = 1
self._Channels:clear()
end
--- @param draw_list ImDrawList
--- @param channels_count int
function MT.ImDrawListSplitter:Split(draw_list, channels_count)
IM_ASSERT(self._Current == 0 and self._Count <= 1, "Nested channel splitting is not supported. Please use separate instances of ImDrawListSplitter.")
local old_channels_count = self._Channels.Size
if old_channels_count < channels_count then
self._Channels:reserve(channels_count)
self._Channels:resize(channels_count)
end
self._Count = channels_count
-- Channel 0 is the draw list itself (memset to 0 in C++)
local channels = self._Channels.Data
channels[1] = { _CmdBuffer = nil, _IdxBuffer = nil }
for i = 2, channels_count do
if i > old_channels_count or channels[i] == nil then
channels[i] = ImDrawChannel()
else
channels[i]._CmdBuffer:resize(0)
channels[i]._IdxBuffer:resize(0)
end
end
end
--- @param draw_list ImDrawList
function MT.ImDrawListSplitter:Merge(draw_list)
-- Note that we never use or rely on _Channels.Size because it is merely a buffer that we never shrink back to 0 to keep all sub-buffers ready for use.
if self._Count <= 1 then
return
end
self:SetCurrentChannel(draw_list, 0)
draw_list:_PopUnusedDrawCmd()
-- Calculate our final buffer sizes. Also fix the incorrect IdxOffset values in each command.
local new_cmd_buffer_count = 0
local new_idx_buffer_count = 0
local last_cmd = (self._Count > 0 and draw_list.CmdBuffer.Size > 0) and draw_list.CmdBuffer.Data[draw_list.CmdBuffer.Size] or nil
local idx_offset = last_cmd and (last_cmd.IdxOffset + last_cmd.ElemCount) or 0
local channels = self._Channels.Data
for i = 2, self._Count do
local ch = channels[i]
local cmds = ch._CmdBuffer
if cmds.Size > 0 and cmds.Data[cmds.Size].ElemCount == 0 and cmds.Data[cmds.Size].UserCallback == nil then -- Equivalent of PopUnusedDrawCmd()
cmds:pop_back()
end
if cmds.Size > 0 and last_cmd ~= nil then
-- Do not include ImDrawCmd_AreSequentialIdxOffset() in the compare as we rebuild IdxOffset values ourselves.
-- Manipulating IdxOffset (e.g. by reordering draw commands like done by RenderDimmedBackgroundBehindWindow()) is not supported within a splitter.
local next_cmd = cmds.Data[1]
if ImDrawCmd_HeaderCompare(last_cmd, next_cmd) and last_cmd.UserCallback == nil and next_cmd.UserCallback == nil then
-- Merge previous channel last draw command with current channel first draw command if matching.
last_cmd.ElemCount = last_cmd.ElemCount + next_cmd.ElemCount
idx_offset = idx_offset + next_cmd.ElemCount
cmds:erase(1) -- FIXME-OPT: Improve for multiple merges.
end
end
if cmds.Size > 0 then
last_cmd = cmds.Data[cmds.Size]
end
new_cmd_buffer_count = new_cmd_buffer_count + cmds.Size
new_idx_buffer_count = new_idx_buffer_count + ch._IdxBuffer.Size
for cmd_n = 1, cmds.Size do
cmds.Data[cmd_n].IdxOffset = idx_offset
idx_offset = idx_offset + cmds.Data[cmd_n].ElemCount
end
end
local cmd_write = draw_list.CmdBuffer.Size + 1
local idx_write = draw_list.IdxBuffer.Size + 1
draw_list.CmdBuffer:resize(draw_list.CmdBuffer.Size + new_cmd_buffer_count)
draw_list.IdxBuffer:resize(draw_list.IdxBuffer.Size + new_idx_buffer_count)
-- Write commands and indices in order (they are fairly small structures, we don't copy vertices only indices)
local dst_cmds = draw_list.CmdBuffer.Data
local dst_idx = draw_list.IdxBuffer.Data
for i = 2, self._Count do
local ch = channels[i]
local src_cmds = ch._CmdBuffer.Data
for n = 1, ch._CmdBuffer.Size do
dst_cmds[cmd_write] = src_cmds[n]
src_cmds[n] = nil -- ownership moved to the draw list
cmd_write = cmd_write + 1
end
local src_idx = ch._IdxBuffer.Data
for n = 1, ch._IdxBuffer.Size do
dst_idx[idx_write] = src_idx[n]
idx_write = idx_write + 1
end
end
draw_list._IdxWritePtr = idx_write
-- Ensure there's always a non-callback draw command trailing the command-buffer
if draw_list.CmdBuffer.Size == 0 or draw_list.CmdBuffer.Data[draw_list.CmdBuffer.Size].UserCallback ~= nil then
draw_list:AddDrawCmd()
end
-- If current command is used with different settings we need to add a new command
local curr_cmd = draw_list.CmdBuffer.Data[draw_list.CmdBuffer.Size]
if curr_cmd.ElemCount == 0 then
ImDrawCmd_HeaderCopyRef(curr_cmd, draw_list._CmdHeader) -- Copy ClipRect, TexRef, VtxOffset
elseif not ImDrawCmd_HeaderCompare(curr_cmd, draw_list._CmdHeader) then
draw_list:AddDrawCmd()
end
self._Count = 1
end
--- @param draw_list ImDrawList
--- @param idx int # 0-based channel index
function MT.ImDrawListSplitter:SetCurrentChannel(draw_list, idx)
IM_ASSERT(idx >= 0 and idx < self._Count)
if self._Current == idx then
return
end
-- Overwrite ImVector (12/16 bytes), four times. This is merely a silly optimization instead of doing .swap()
local channels = self._Channels.Data
local cur = channels[self._Current + 1]
cur._CmdBuffer = draw_list.CmdBuffer
cur._IdxBuffer = draw_list.IdxBuffer
self._Current = idx
local ch = channels[idx + 1]
draw_list.CmdBuffer = ch._CmdBuffer
draw_list.IdxBuffer = ch._IdxBuffer
draw_list._IdxWritePtr = draw_list.IdxBuffer.Size + 1
-- If current command is used with different settings we need to add a new command
local curr_cmd = (draw_list.CmdBuffer.Size == 0) and nil or draw_list.CmdBuffer.Data[draw_list.CmdBuffer.Size]
if curr_cmd == nil then
draw_list:AddDrawCmd()
elseif curr_cmd.ElemCount == 0 then
ImDrawCmd_HeaderCopyRef(curr_cmd, draw_list._CmdHeader) -- Copy ClipRect, TexRef, VtxOffset
elseif not ImDrawCmd_HeaderCompare(curr_cmd, draw_list._CmdHeader) then
draw_list:AddDrawCmd()
end
end
--- @param count int
function MT.ImDrawList:ChannelsSplit(count) self._Splitter:Split(self, count) end
function MT.ImDrawList:ChannelsMerge() self._Splitter:Merge(self) end
--- @param n int # 0-based
function MT.ImDrawList:ChannelsSetCurrent(n) self._Splitter:SetCurrentChannel(self, n) end
--- @param points ImVec2[]
--- @param points_count int
--- @param col ImU32
@@ -3912,6 +4108,27 @@ function MT.ImDrawList:AddTriangle(p1, p2, p3, col, thickness)
self:PathStroke(col, thickness, ImDrawFlags.Closed)
end
function MT.ImDrawList:AddQuad(p1, p2, p3, p4, col, thickness)
if thickness == nil then thickness = 1.0 end
if bit32.band(col, IM_COL32_A_MASK) == 0 then return end
self:PathLineTo(p1)
self:PathLineTo(p2)
self:PathLineTo(p3)
self:PathLineTo(p4)
self:PathStroke(col, thickness, ImDrawFlags.Closed)
end
function MT.ImDrawList:AddQuadFilled(p1, p2, p3, p4, col)
if bit32.band(col, IM_COL32_A_MASK) == 0 then return end
self:PathLineTo(p1)
self:PathLineTo(p2)
self:PathLineTo(p3)
self:PathLineTo(p4)
self:PathFillConvex(col)
end
function MT.ImDrawList:AddTriangleFilled(p1, p2, p3, col)
if bit32.band(col, IM_COL32_A_MASK) == 0 then return end