Tables: (breaking) renamed ImGuiTableColumnFlags_WidthAutoResize to _WidthAuto., default to WidthFixed policy when host window has auto-resize.

Fix edge case with TableSetColumnWidth on small windows (amend 972ca816)
This commit is contained in:
ocornut
2020-12-22 22:32:30 +01:00
parent d497f112e7
commit 956435768f
3 changed files with 38 additions and 32 deletions

31
imgui.h
View File

@ -1035,22 +1035,25 @@ enum ImGuiTabItemFlags_
};
// Flags for ImGui::BeginTable()
// - Important! Sizing policies have particularly complex and subtle side effects, more so than you would expect.
// - Important! Sizing policies have complex and subtle side effects, more so than you would expect.
// Read comments/demos carefully + experiment with live demos to get acquainted with them.
// - The default sizing policy for columns depends on whether the ScrollX flag is set on the table:
// When ScrollX is off:
// - The DEFAULT policy depends on whether the _ScrollX flag is set on the table, and whether _AlwaysAutoResize flag is set on window.
// - ImGuiTableFlags_ColumnsWidthStretch is the default if ScrollX if off.
// - ImGuiTableFlags_ColumnsWidthFixed is the default if ScrollX is on, or if host window has ImGuiWindowFlags_AlwaysAutoResize.
// - When ScrollX is off:
// - Table defaults to ImGuiTableFlags_ColumnsWidthStretch -> all Columns defaults to ImGuiTableColumnFlags_WidthStretch.
// - Columns sizing policy allowed: Stretch (default) or Fixed/Auto.
// - Fixed Columns will generally obtain their requested width (unless the Table cannot fit them all).
// - Columns sizing policy allowed: Stretch (default), Fixed/Auto.
// - Fixed Columns will generally obtain their requested width (unless the table cannot fit them all).
// - Stretch Columns will share the remaining width.
// When ScrollX is on:
// - Table defaults to ImGuiTableFlags_ColumnsWidthFixed -> all Columns defaults to ImGuiTableColumnFlags_WidthFixed.
// - Columns sizing policy allowed: Fixed/Auto mostly!
// - Mixed Fixed/Stretch columns is possible but has various side-effects on resizing behaviors.
// The typical use of mixing sizing policies is: any number of LEADING Fixed columns, followed by one or two TRAILING Stretch columns.
// (this is because the visible order of columns have subtle but necessary effects on how they react to manual resizing).
// - When ScrollX is on:
// - Table defaults to ImGuiTableFlags_ColumnsWidthFixed -> all Columns defaults to ImGuiTableColumnFlags_WidthFixed or ImGuiTableColumnFlags_WidthAuto
// - Columns sizing policy allowed: Fixed/Auto mostly.
// - Fixed Columns can be enlarged as needed. Table will show an horizontal scrollbar if needed.
// - Using Stretch columns OFTEN DOES NOT MAKE SENSE if ScrollX is on, UNLESS you have specified a value for 'inner_width' in BeginTable().
// - Mixing up columns with different sizing policy is possible BUT can be tricky and has some side-effects and restrictions.
// (their visible order and the scrolling state have subtle but necessary effects on how they can be manually resized).
// The typical use of mixing sizing policies is to have ScrollX disabled, first Fixed columns and then one or two TRAILING Stretch columns.
// If you specify a value for 'inner_width' then effectively the scrolling space is known and Stretch or mixed Fixed/Stretch columns become meaningful again.
enum ImGuiTableFlags_
{
// Features
@ -1076,7 +1079,7 @@ enum ImGuiTableFlags_
ImGuiTableFlags_NoBordersInBodyUntilResize = 1 << 12, // Disable vertical borders in columns Body until hovered for resize (borders will always appears in Headers).
// Sizing
ImGuiTableFlags_ColumnsWidthStretch = 1 << 13, // Default if ScrollX is off. Columns will default to use _WidthStretch. Read description above for more details.
ImGuiTableFlags_ColumnsWidthFixed = 1 << 14, // Default if ScrollX is on. Columns will default to use _WidthFixed or _WidthAutoResize policy (if Resizable is off). Read description above for more details.
ImGuiTableFlags_ColumnsWidthFixed = 1 << 14, // Default if ScrollX is on. Columns will default to use _WidthFixed or _WidthAuto policy (if Resizable is off). Read description above for more details.
ImGuiTableFlags_SameWidths = 1 << 15, // Make all columns the same widths which is useful with Fixed columns policy (but granted by default with Stretch policy + no resize). Implicitly enable ImGuiTableFlags_NoKeepColumnsVisible and disable ImGuiTableFlags_Resizable.
ImGuiTableFlags_NoHostExtendY = 1 << 16, // Disable extending table past the limit set by outer_size.y. Only meaningful when neither ScrollX nor ScrollY are set (data below the limit will be clipped and not visible)
ImGuiTableFlags_NoKeepColumnsVisible = 1 << 17, // Disable keeping column always minimally visible when ScrollX is off and table gets too small. Not recommended if columns are resizable.
@ -1104,7 +1107,7 @@ enum ImGuiTableColumnFlags_
ImGuiTableColumnFlags_DefaultSort = 1 << 1, // Default as a sorting column.
ImGuiTableColumnFlags_WidthStretch = 1 << 2, // Column will stretch. Preferable with horizontal scrolling disabled (default if table sizing policy is _ColumnsWidthStretch).
ImGuiTableColumnFlags_WidthFixed = 1 << 3, // Column will not stretch. Preferable with horizontal scrolling enabled (default if table sizing policy is _ColumnsWidthFixed and table is resizable).
ImGuiTableColumnFlags_WidthAutoResize = 1 << 4, // Column will not stretch and keep resizing based on submitted contents (default if table sizing policy is _ColumnsWidthFixed and table is not resizable).
ImGuiTableColumnFlags_WidthAuto = 1 << 4, // Column will not stretch and keep resizing based on submitted contents (default if table sizing policy is _ColumnsWidthFixed and table is not resizable). Generally compatible with using right-most fitting widgets (e.g. SetNextItemWidth(-FLT_MIN))
ImGuiTableColumnFlags_NoResize = 1 << 5, // Disable manual resizing.
ImGuiTableColumnFlags_NoReorder = 1 << 6, // Disable manual reordering this column, this will also prevent other columns from crossing over this column.
ImGuiTableColumnFlags_NoHide = 1 << 7, // Disable ability to hide/disable this column.
@ -1125,7 +1128,7 @@ enum ImGuiTableColumnFlags_
ImGuiTableColumnFlags_IsHovered = 1 << 23, // Status: is hovered by mouse
// [Internal] Combinations and masks
ImGuiTableColumnFlags_WidthMask_ = ImGuiTableColumnFlags_WidthStretch | ImGuiTableColumnFlags_WidthFixed | ImGuiTableColumnFlags_WidthAutoResize,
ImGuiTableColumnFlags_WidthMask_ = ImGuiTableColumnFlags_WidthStretch | ImGuiTableColumnFlags_WidthFixed | ImGuiTableColumnFlags_WidthAuto,
ImGuiTableColumnFlags_IndentMask_ = ImGuiTableColumnFlags_IndentEnable | ImGuiTableColumnFlags_IndentDisable,
ImGuiTableColumnFlags_StatusMask_ = ImGuiTableColumnFlags_IsEnabled | ImGuiTableColumnFlags_IsVisible | ImGuiTableColumnFlags_IsSorted | ImGuiTableColumnFlags_IsHovered,
ImGuiTableColumnFlags_NoDirectResize_ = 1 << 30 // [Internal] Disable user resizing this column directly (it may however we resized indirectly from its left edge)