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Tables: Reworked padding/spacing/width.

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All widths are stored without padding.
Decorelate padding from presence of border.
Added ImGuiTableFlags_Pad/NoPad flags.
Added demo.
Merge StartXHeaders and StartXRows into StartX.
Distinguish CellSpacingX1 and CellSpacingX2 for clarity and to avoid loss of width on non-even spacing values.
This commit is contained in:
ocornut
2020-10-07 22:44:02 +02:00
parent 75c5f534e8
commit 1731ae5a09
4 changed files with 231 additions and 141 deletions
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22
imgui_internal.h
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@ -1887,7 +1887,7 @@ struct ImGuiTabBar
#define IMGUI_TABLE_MAX_COLUMNS 64 // sizeof(ImU64) * 8. This is solely because we frequently encode columns set in a ImU64.
#define IMGUI_TABLE_MAX_DRAW_CHANNELS (2 + 64 * 2) // See TableUpdateDrawChannels()
// [Internal] sizeof() ~ 104
// [Internal] sizeof() ~ 108
// We use the terminology "Visible" to refer to a column that is not Hidden by user or settings. However it may still be out of view and clipped (see IsClipped).
struct ImGuiTableColumn
{
@ -1897,10 +1897,11 @@ struct ImGuiTableColumn
ImGuiTableColumnFlags Flags; // Effective flags. See ImGuiTableColumnFlags_
float MinX; // Absolute positions
float MaxX;
float WidthOrWeightInitValue; // Value passed to TableSetupColumn()
float WidthStretchWeight; // Master width weight when (Flags & _WidthStretch). Often around ~1.0f initially.
float WidthRequest; // Master width absolute value when !(Flags & _WidthStretch). When Stretch this is derived every frame from WidthStretchWeight in TableUpdateLayout()
float WidthGiven; // Final/actual width visible == (MaxX - MinX), locked in TableUpdateLayout(). May be >WidthRequest to honor minimum width, may be <WidthRequest to honor shrinking columns down in tight space.
float InitStretchWeightOrWidth; // Value passed to TableSetupColumn(). For Width it is a content width (_without padding_).
float StretchWeight; // Master width weight when (Flags & _WidthStretch). Often around ~1.0f initially.
float WidthAuto; // Automatic width
float WidthRequest; // Master width absolute value when !(Flags & _WidthStretch). When Stretch this is derived every frame from StretchWeight in TableUpdateLayout()
float WidthGiven; // Final/actual width visible == (MaxX - MinX), locked in TableUpdateLayout(). May be > WidthRequest to honor minimum width, may be < WidthRequest to honor shrinking columns down in tight space.
float StartX; // Start position for the frame, currently ~(MinX + CellPaddingX)
float ContentMaxPosFrozen; // Submitted contents absolute maximum position, from which we can infer width. Kept as float because we need to manipulate those between each cell change.
float ContentMaxPosUnfrozen;
@ -1931,7 +1932,7 @@ struct ImGuiTableColumn
ImGuiTableColumn()
{
memset(this, 0, sizeof(*this));
WidthStretchWeight = WidthRequest = WidthGiven = -1.0f;
StretchWeight = WidthRequest = -1.0f;
NameOffset = -1;
IsVisible = IsVisibleNextFrame = true;
DisplayOrder = IndexWithinVisibleSet = -1;
@ -1985,10 +1986,11 @@ struct ImGuiTable
float BorderX1;
float BorderX2;
float HostIndentX;
float CellPaddingX1; // Padding from each borders
float CellPaddingX2;
float OuterPaddingX;
float CellPaddingX; // Padding from each borders
float CellPaddingY;
float CellSpacingX; // Spacing between non-bordered cells
float CellSpacingX1; // Spacing between non-bordered cells
float CellSpacingX2;
float LastOuterHeight; // Outer height from last frame
float LastFirstRowHeight; // Height of first row from last frame
float InnerWidth; // User value passed to BeginTable(), see comments at the top of BeginTable() for details.
@ -2285,7 +2287,7 @@ namespace ImGui
IMGUI_API void TableEndRow(ImGuiTable* table);
IMGUI_API void TableBeginCell(ImGuiTable* table, int column_n);
IMGUI_API void TableEndCell(ImGuiTable* table);
IMGUI_API ImRect TableGetCellBgRect();
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);