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Tables: decent support for auto-resize of stretch columns (trickier than it sounds)

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Four cases:
1. visible columns are all stretch, resize all : "size all to default" reset to default weight
2. visible columns are all stretch, resize one: "size one to fit" set weight, reapply weight (todo: improve weight redistribution in case of >1 siblings)
3. visible columns are mixed, resize all: "size all to fit/default" reset stretchs to default weight, set fixed to auto width
4. visible columns are mixed, resize one: "size one to fit", redistribute weight the same way as a manual resize
+ TableSetupColumn() more consistently clear AutoFitQueue.
+ zero-clear RowCellData buffer.
This commit is contained in:
ocornut
2020-11-16 20:25:35 +01:00
parent c5dcf2fde1
commit 3b3503e60f
3 changed files with 85 additions and 50 deletions
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9
imgui_internal.h
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@ -519,6 +519,7 @@ struct ImSpan
inline void set(T* data, int size) { Data = data; DataEnd = data + size; }
inline void set(T* data, T* data_end) { Data = data; DataEnd = data_end; }
inline int size() const { return (int)(ptrdiff_t)(DataEnd - Data); }
inline int size_in_bytes() const { return (int)(ptrdiff_t)(DataEnd - Data) * (int)sizeof(T); }
inline T& operator[](int i) { T* p = Data + i; IM_ASSERT(p >= Data && p < DataEnd); return *p; }
inline const T& operator[](int i) const { const T* p = Data + i; IM_ASSERT(p >= Data && p < DataEnd); return *p; }
@ -1941,7 +1942,6 @@ struct ImGuiTableColumn
PrevVisibleColumn = NextVisibleColumn = -1;
SortOrder = -1;
SortDirection = ImGuiSortDirection_None;
AutoFitQueue = CannotSkipItemsQueue = (1 << 3) - 1; // Skip for three frames
DrawChannelCurrent = DrawChannelFrozen = DrawChannelUnfrozen = (ImU8)-1;
}
};
@ -1969,7 +1969,6 @@ struct ImGuiTable
int SettingsOffset; // Offset in g.SettingsTables
int LastFrameActive;
int ColumnsCount; // Number of columns declared in BeginTable()
int ColumnsVisibleCount; // Number of non-hidden columns (<= ColumnsCount)
int CurrentRow;
int CurrentColumn;
ImS16 InstanceCurrent; // Count of BeginTable() calls with same ID in the same frame (generally 0). This is a little bit similar to BeginCount for a window, but multiple table with same ID look are multiple tables, they are just synched.
@ -2018,9 +2017,12 @@ struct ImGuiTable
ImVector<ImGuiTableSortSpecsColumn> SortSpecsData; // FIXME-OPT: Fixed-size array / small-vector pattern, optimize for single sort spec
ImGuiTableSortSpecs SortSpecs; // Public facing sorts specs, this is what we return in TableGetSortSpecs()
ImS8 SortSpecsCount;
ImS8 ColumnsVisibleCount; // Number of non-hidden columns (<= ColumnsCount)
ImS8 ColumnsVisibleFixedCount; // Number of non-hidden columns (<= ColumnsCount)
ImS8 DeclColumnsCount; // Count calls to TableSetupColumn()
ImS8 HoveredColumnBody; // Index of column whose visible region is being hovered. Important: == ColumnsCount when hovering empty region after the right-most column!
ImS8 HoveredColumnBorder; // Index of column whose right-border is being hovered (for resizing).
ImS8 AutoFitSingleStretchColumn; // Index of single stretch column requesting auto-fit.
ImS8 ResizedColumn; // Index of column being resized. Reset when InstanceCurrent==0.
ImS8 LastResizedColumn; // Index of column being resized from previous frame.
ImS8 HeldHeaderColumn; // Index of column header being held.
@ -2287,7 +2289,8 @@ namespace ImGui
IMGUI_API ImRect TableGetCellBgRect(const ImGuiTable* table, int column_n);
IMGUI_API const char* TableGetColumnName(const ImGuiTable* table, int column_n);
IMGUI_API ImGuiID TableGetColumnResizeID(const ImGuiTable* table, int column_n, int instance_no = 0);
IMGUI_API void TableSetColumnAutofit(ImGuiTable* table, int column_n);
IMGUI_API void TableSetColumnWidthAutoSingle(ImGuiTable* table, int column_n);
IMGUI_API void TableSetColumnWidthAutoAll(ImGuiTable* table);
IMGUI_API void PushTableBackground();
IMGUI_API void PopTableBackground();
IMGUI_API void TableRemove(ImGuiTable* table);