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Tables: latch border size once, and pull all use from same place. (#9415)

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ocornut 2026-10-29 18:40:27 +01:00
parent d2ba763635
commit c39a91bfbe
2 changed files with 15 additions and 12 deletions
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1
imgui_internal.h
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@ -3156,6 +3156,7 @@ struct IMGUI_API ImGuiTable
ImU32 BorderColorLight;
float BorderX1;
float BorderX2;
float BorderSize;
float HostIndentX;
float MinColumnWidth;
float OuterPaddingX;

26
imgui_tables.cpp
View File

@ -478,11 +478,14 @@ bool ImGui::BeginTableEx(const char* name, ImGuiID id, int columns_count, ImG
temp_data->HostBackupItemWidthStackSize = outer_window->DC.ItemWidthStack.Size;
inner_window->DC.PrevLineSize = inner_window->DC.CurrLineSize = ImVec2(0.0f, 0.0f);
// Border size
// FIXME-WIP: Changing this is not currently simple due to ClipRect requirements. Easier to manage with new 1.93 primitives though.
const float border_size = table->BorderSize = TABLE_BORDER_SIZE;
// Make borders not overlap our contents by offsetting HostClipRect (#6765, #7428, #3752)
// (we normally shouldn't alter HostClipRect as we rely on TableMergeDrawChannels() expanding non-clipped column toward the
// limits of that rectangle, in order for ImDrawListSplitter::Merge() to merge the draw commands. However since the overlap
// problem only affect scrolling tables in this case we can get away with doing it without extra cost).
const float border_size = TABLE_BORDER_SIZE;
if (inner_window != outer_window)
{
// FIXME: Because inner_window's Scrollbar doesn't know about border size, since it's not encoded in window->WindowBorderSize,
@ -509,14 +512,14 @@ bool ImGui::BeginTableEx(const char* name, ImGuiID id, int columns_count, ImG
// - PadOuter+PadInner | Pad ..Content.. Pad | Pad ..Content.. Pad |
const bool pad_outer_x = (flags & ImGuiTableFlags_NoPadOuterX) ? false : (flags & ImGuiTableFlags_PadOuterX) ? true : (flags & ImGuiTableFlags_BordersOuterV) != 0;
const bool pad_inner_x = (flags & ImGuiTableFlags_NoPadInnerX) ? false : true;
const float inner_spacing_for_border = (flags & ImGuiTableFlags_BordersInnerV) ? TABLE_BORDER_SIZE : 0.0f;
const float inner_spacing_for_border = (flags & ImGuiTableFlags_BordersInnerV) ? border_size : 0.0f;
const float inner_spacing_explicit = (pad_inner_x && (flags & ImGuiTableFlags_BordersInnerV) == 0) ? g.Style.CellPadding.x : 0.0f;
const float inner_padding_explicit = (pad_inner_x && (flags & ImGuiTableFlags_BordersInnerV) != 0) ? g.Style.CellPadding.x : 0.0f;
table->CellSpacingX1 = inner_spacing_explicit + inner_spacing_for_border;
table->CellSpacingX2 = inner_spacing_explicit;
table->CellPaddingX = inner_padding_explicit;
const float outer_padding_for_border = (flags & ImGuiTableFlags_BordersOuterV) ? TABLE_BORDER_SIZE : 0.0f;
const float outer_padding_for_border = (flags & ImGuiTableFlags_BordersOuterV) ? border_size : 0.0f;
const float outer_padding_explicit = pad_outer_x ? g.Style.CellPadding.x : 0.0f;
table->OuterPaddingX = (outer_padding_for_border + outer_padding_explicit) - table->CellPaddingX;
@ -1284,7 +1287,7 @@ void ImGui::TableUpdateLayout(ImGuiTable* table)
}
if (order_n < table->FreezeColumnsCount)
host_clip_rect.Min.x = ImClamp(column->MaxX + TABLE_BORDER_SIZE, host_clip_rect.Min.x, host_clip_rect.Max.x);
host_clip_rect.Min.x = ImClamp(column->MaxX + table->BorderSize, host_clip_rect.Min.x, host_clip_rect.Max.x);
offset_x += column->WidthGiven + table->CellSpacingX1 + table->CellSpacingX2 + table->CellPaddingX * 2.0f;
}
@ -1510,7 +1513,7 @@ void ImGui::EndTable()
// but since the later is likely to be impossible to do we'd rather update both axes together.
if (table->Flags & ImGuiTableFlags_ScrollX)
{
const float outer_padding_for_border = (table->Flags & ImGuiTableFlags_BordersOuterV) ? TABLE_BORDER_SIZE : 0.0f;
const float outer_padding_for_border = (table->Flags & ImGuiTableFlags_BordersOuterV) ? table->BorderSize : 0.0f;
float max_pos_x = inner_window->DC.CursorMaxPos.x;
if (table->RightMostEnabledColumn != -1)
max_pos_x = ImMax(max_pos_x, table->Columns[table->RightMostEnabledColumn].WorkMaxX + table->CellPaddingX + table->OuterPaddingX - outer_padding_for_border);
@ -2175,7 +2178,6 @@ void ImGui::TableEndRow(ImGuiTable* table)
// Decide of top border color
ImU32 top_border_col = 0;
const float border_size = TABLE_BORDER_SIZE;
if (table->CurrentRow > 0 && (table->Flags & ImGuiTableFlags_BordersInnerH))
top_border_col = (table->LastRowFlags & ImGuiTableRowFlags_Headers) ? table->BorderColorStrong : table->BorderColorLight;
@ -2222,11 +2224,11 @@ void ImGui::TableEndRow(ImGuiTable* table)
// Draw top border
if (top_border_col && bg_y1 >= table->BgClipRect.Min.y && bg_y1 < table->BgClipRect.Max.y)
window->DrawList->AddLineH(table->BorderX1, table->BorderX2, bg_y1, top_border_col, border_size);
window->DrawList->AddLineH(table->BorderX1, table->BorderX2, bg_y1, top_border_col, table->BorderSize);
// Draw bottom border at the row unfreezing mark (always strong)
if (draw_strong_bottom_border && bg_y2 >= table->BgClipRect.Min.y && bg_y2 < table->BgClipRect.Max.y)
window->DrawList->AddLineH(table->BorderX1, table->BorderX2, bg_y2, table->BorderColorStrong, border_size);
window->DrawList->AddLineH(table->BorderX1, table->BorderX2, bg_y2, table->BorderColorStrong, table->BorderSize);
}
// End frozen rows (when we are past the last frozen row line, teleport cursor and alter clipping rectangle)
@ -2967,9 +2969,8 @@ void ImGui::TableDrawBorders(ImGuiTable* table)
table->DrawSplitter->SetCurrentChannel(inner_drawlist, TABLE_DRAW_CHANNEL_BG0);
inner_drawlist->PushClipRect(table->OuterWindow->ClipRect.Min, table->OuterWindow->ClipRect.Max, false);
const float border_size = TABLE_BORDER_SIZE;
// For e.g. non scrolling table we limit vertex coordinates in order to keep ImDrawCmd AABB roughly within visible range.
const float border_size = table->BorderSize;
const float draw_y2_limit = table->OuterWindow->ClipRect.Max.y + (2.0f * ImMax(border_size, inner_drawlist->_FringeScale));
// Draw inner border and resizing feedback
@ -3640,8 +3641,9 @@ void ImGui::TableAngledHeadersRowEx(ImGuiID row_id, float angle, float max_label
if (pass == 1)
{
// Draw border
const float border_size = TABLE_BORDER_SIZE;
draw_list->AddLine(bg_shape[0] + ImVec2(border_size * 0.5f, 0.0f), bg_shape[3] + ImVec2(border_size * 0.5f, 0.0f), TableGetColumnBorderCol(table, order_n, column_n), border_size);
draw_list->AddLine(
bg_shape[0] + ImVec2(table->BorderSize * 0.5f, 0.0f),
bg_shape[3] + ImVec2(table->BorderSize * 0.5f, 0.0f), TableGetColumnBorderCol(table, order_n, column_n), table->BorderSize);
}
}
PopClipRect();