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Tables: internal tidying up, calculate WidthAuto in first loop of layout + TableSetupColumn() with unspecified stretch weight leaves it at -1.0f (unset) rather than overrding default. Amend 3b3503e.

Browse Source 
Both changes are intended to have no side-effects. Committed separately from upcoming commit for easier future bissecting.
Small demo fix.
docking
ocornut 4 years ago
parent 68faa16e1d
commit eb88fee052
3 changed files with 31 additions and 31 deletions
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2
imgui.h
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@ -664,7 +664,7 @@ namespace ImGui
// - 1. Call BeginTable()
// - 2. Optionally call TableSetupColumn() to submit column name/flags/defaults
// - 3. Optionally call TableSetupScrollFreeze() to request scroll freezing of columns/rows
// - 4. Optionally call TableHeadersRow() to submit a header row (names will be pulled from data submitted to TableSetupColumns)
// - 4. Optionally call TableHeadersRow() to submit a header row. Names will be pulled from data provided TableSetupColumn() calls)
// - 5. Populate contents
// - In most situations you can use TableNextRow() + TableSetColumnIndex(N) to start appending into a column.
// - If you are using tables as a sort of grid, where every columns is holding the same type of contents,

11
imgui_demo.cpp
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@ -4080,15 +4080,15 @@ static void ShowDemoWindowTables()
static int column_count = 3;
PushStyleCompact();
ImGui::SetNextItemWidth(TEXT_BASE_WIDTH * 22);
ImGui::PushItemWidth(TEXT_BASE_WIDTH * 30);
ImGui::Combo("Contents", &contents_type, "Short Text\0Long Text\0Button\0Fill Button\0InputText\0");
if (contents_type == CT_FillButton)
{
ImGui::SameLine();
HelpMarker("Be mindful that using right-alignment (e.g. size.x = -FLT_MIN) creates a feedback loop where contents width can feed into auto-column width can feed into contents width.");
}
ImGui::SetNextItemWidth(TEXT_BASE_WIDTH * 22);
ImGui::DragInt("Columns", &column_count, 0.1f, 1, 64, "%d", ImGuiSliderFlags_AlwaysClamp);
ImGui::PopItemWidth();
ImGui::CheckboxFlags("ImGuiTableFlags_BordersInnerH", &flags, ImGuiTableFlags_BordersInnerH);
ImGui::CheckboxFlags("ImGuiTableFlags_BordersOuterH", &flags, ImGuiTableFlags_BordersOuterH);
ImGui::CheckboxFlags("ImGuiTableFlags_BordersInnerV", &flags, ImGuiTableFlags_BordersInnerV);
@ -4181,13 +4181,14 @@ static void ShowDemoWindowTables()
static float inner_width = 1000.0f;
PushStyleCompact();
ImGui::PushID("flags3");
ImGui::PushItemWidth(TEXT_BASE_WIDTH * 30);
ImGui::CheckboxFlags("ImGuiTableFlags_ScrollX", &flags3, ImGuiTableFlags_ScrollX);
if (ImGui::CheckboxFlags("ImGuiTableFlags_SizingPolicyStretch", &flags3, ImGuiTableFlags_SizingPolicyStretch))
flags3 &= ~ImGuiTableFlags_SizingPolicyFixed; // Can't specify both sizing polices so we clear the other
if (ImGui::CheckboxFlags("ImGuiTableFlags_SizingPolicyFixed", &flags3, ImGuiTableFlags_SizingPolicyFixed))
flags3 &= ~ImGuiTableFlags_SizingPolicyStretch; // Can't specify both sizing polices so we clear the other
ImGui::SetNextItemWidth(TEXT_BASE_WIDTH * 10.0f);
ImGui::DragFloat("inner_width", &inner_width, 1.0f, 0.0f, FLT_MAX, "%.1f");
ImGui::PopItemWidth();
ImGui::PopID();
PopStyleCompact();
if (ImGui::BeginTable("##table3", 7, flags3 | ImGuiTableFlags_SizingPolicyStretch | ImGuiTableFlags_ContextMenuInBody, outer_size, inner_width))
@ -4853,8 +4854,8 @@ static void ShowDemoWindowTables()
ImGui::TableSetupColumn("ID", ImGuiTableColumnFlags_DefaultSort | ImGuiTableColumnFlags_WidthFixed | ImGuiTableColumnFlags_NoHide, -1.0f, MyItemColumnID_ID);
ImGui::TableSetupColumn("Name", ImGuiTableColumnFlags_WidthFixed, -1.0f, MyItemColumnID_Name);
ImGui::TableSetupColumn("Action", ImGuiTableColumnFlags_NoSort | ImGuiTableColumnFlags_WidthFixed, -1.0f, MyItemColumnID_Action);
ImGui::TableSetupColumn("Quantity", ImGuiTableColumnFlags_PreferSortDescending, 1.0f, MyItemColumnID_Quantity);
ImGui::TableSetupColumn("Description", ImGuiTableColumnFlags_WidthStretch, 1.0f, MyItemColumnID_Description);
ImGui::TableSetupColumn("Quantity", ImGuiTableColumnFlags_PreferSortDescending, -1.0f, MyItemColumnID_Quantity);
ImGui::TableSetupColumn("Description", ImGuiTableColumnFlags_WidthStretch, -1.0f, MyItemColumnID_Description);
ImGui::TableSetupColumn("Hidden", ImGuiTableColumnFlags_DefaultHide | ImGuiTableColumnFlags_NoSort);
ImGui::TableSetupScrollFreeze(freeze_cols, freeze_rows);

33
imgui_tables.cpp
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@ -644,7 +644,7 @@ void ImGui::TableUpdateLayout(ImGuiTable* table)
table->EnabledMaskByDisplayOrder = 0x00;
table->MinColumnWidth = ImMax(1.0f, g.Style.FramePadding.x * 1.0f); // g.Style.ColumnsMinSpacing; // FIXME-TABLE
// [Part 1] Apply/lock Enabled and Order states.
// [Part 1] Apply/lock Enabled and Order states. Calculate auto/ideal width for columns.
// Process columns in their visible orders as we are building the Prev/Next indices.
int last_visible_column_idx = -1;
bool want_auto_fit = false;
@ -687,13 +687,14 @@ void ImGui::TableUpdateLayout(ImGuiTable* table)
if (start_auto_fit)
column->AutoFitQueue = column->CannotSkipItemsQueue = (1 << 3) - 1; // Fit for three frames
if (column->AutoFitQueue != 0x00)
want_auto_fit = true;
ImU64 index_mask = (ImU64)1 << column_n;
ImU64 display_order_mask = (ImU64)1 << column->DisplayOrder;
if (column->IsEnabled)
if (!column->IsEnabled)
{
column->IndexWithinEnabledSet = -1;
continue;
}
// Mark as enabled and link to previous/next enabled column
column->PrevEnabledColumn = (ImGuiTableColumnIdx)last_visible_column_idx;
column->NextEnabledColumn = -1;
@ -704,12 +705,15 @@ void ImGui::TableUpdateLayout(ImGuiTable* table)
table->EnabledMaskByIndex |= index_mask;
table->EnabledMaskByDisplayOrder |= display_order_mask;
last_visible_column_idx = column_n;
}
else
{
column->IndexWithinEnabledSet = -1;
}
IM_ASSERT(column->IndexWithinEnabledSet <= column->DisplayOrder);
// Calculate ideal/auto column width (that's the width required for all contents to be visible without clipping)
// Combine width from regular rows + width from headers unless requested not to.
if (!column->IsPreserveWidthAuto)
column->WidthAuto = TableGetColumnWidthAuto(table, column);
if (column->AutoFitQueue != 0x00)
want_auto_fit = true;
}
if ((table->Flags & ImGuiTableFlags_Sortable) && table->SortSpecsCount == 0 && !(table->Flags & ImGuiTableFlags_SortTristate))
table->IsSortSpecsDirty = true;
@ -724,7 +728,7 @@ void ImGui::TableUpdateLayout(ImGuiTable* table)
if (want_auto_fit)
table->IsSettingsDirty = true;
// [Part 3] Fix column flags. Calculate ideal width for columns. Count how many fixed/stretch columns we have and sum of weights.
// [Part 3] Fix column flags. Count how many fixed/stretch columns we have and sum of weights.
int count_fixed = 0; // Number of columns that have fixed sizing policy (not stretched sizing policy) (this is NOT the opposite of count_resizable!)
int count_resizable = 0; // Number of columns the user can resize (this is NOT the opposite of count_fixed!)
float sum_weights_stretched = 0.0f; // Sum of all weights for weighted columns.
@ -741,11 +745,6 @@ void ImGui::TableUpdateLayout(ImGuiTable* table)
if ((column->Flags & ImGuiTableColumnFlags_NoResize) == 0)
count_resizable++;
// Calculate ideal/auto column width (that's the width required for all contents to be visible without clipping)
// Combine width from regular rows + width from headers unless requested not to.
if (!column->IsPreserveWidthAuto)
column->WidthAuto = TableGetColumnWidthAuto(table, column);
if (column->Flags & (ImGuiTableColumnFlags_WidthFixed | ImGuiTableColumnFlags_WidthAuto))
{
// Non-resizable columns keep their requested width
@ -1313,7 +1312,7 @@ void ImGui::TableSetupColumn(const char* label, ImGuiTableColumnFlags flags, flo
if ((flags & ImGuiTableColumnFlags_WidthFixed) && init_width_or_weight > 0.0f)
column->WidthRequest = init_width_or_weight;
if (flags & ImGuiTableColumnFlags_WidthStretch)
column->StretchWeight = (init_width_or_weight > 0.0f) ? init_width_or_weight : 1.0f;
column->StretchWeight = (init_width_or_weight > 0.0f) ? init_width_or_weight : -1.0f;
// Disable auto-fit if an explicit width/weight has been specified
if (init_width_or_weight > 0.0f)

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