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Tables: reset all width apply to hidden stretch columns. Comments.

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This commit is contained in:
ocornut 2020-12-16 16:06:07 +01:00
parent 1fb26d18c4
commit c4dbab8f5e
1 changed files with 19 additions and 7 deletions
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26
imgui_tables.cpp
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@ -1281,7 +1281,7 @@ void ImGui::TableSetupColumn(const char* label, ImGuiTableColumnFlags flags, flo
table->DeclColumnsCount++;
// When passing a width automatically enforce WidthFixed policy
// (vs TableFixColumnFlags would default to WidthAutoResize)
// (whereas TableSetupColumnFlags would default to WidthAutoResize)
if ((flags & ImGuiTableColumnFlags_WidthMask_) == 0)
if ((table->Flags & ImGuiTableFlags_ColumnsWidthFixed) && (init_width_or_weight > 0.0f))
flags |= ImGuiTableColumnFlags_WidthFixed;
@ -1856,7 +1856,8 @@ void ImGui::TableSetColumnWidth(int column_n, float width)
// - All fixed: easy.
// - All stretch: easy.
// - One or more fixed + one stretch: easy.
// - One or more fixed + more than one stretch: A MESS
// - One or more fixed + more than one stretch: tricky.
// Qt when manual resize is enabled only support a single _trailing_ stretch column.
// When forwarding resize from Wn| to Fn+1| we need to be considerate of the _NoResize flag on Fn+1.
// FIXME-TABLE: Find a way to rewrite all of this so interactions feel more consistent for the user.
@ -1877,6 +1878,11 @@ void ImGui::TableSetColumnWidth(int column_n, float width)
// - W1 F2 F3 resize from F2| --> ok
// All resizes from a Wx columns are locking other columns.
// Possible improvements:
// - W1 W2 W3 resize W1| --> to not be stuck, both W2 and W3 would stretch down. Seems possible to fix. Would be most beneficial to simplify resize of all-weighted columns.
// - W1 F2 W3 resize W1| or F2| --> symmetrical resize is weird and glitchy. Seems possible to fix.
// - W3 F1 F2 resize W3| --> to not be stuck past F1|, both F1 and F2 would need to stretch down, which would be lossy or ambiguous. Seems hard to fix.
// Rules:
// - [Resize Rule 1] Can't resize from right of right-most visible column if there is any Stretch column. Implemented in TableUpdateLayout().
// - [Resize Rule 2] Resizing from right-side of a Stretch column before a fixed column forward sizing to left-side of fixed column.
@ -1901,7 +1907,7 @@ void ImGui::TableSetColumnWidth(int column_n, float width)
}
else if (column_0->Flags & ImGuiTableColumnFlags_WidthStretch)
{
// We can also use previous column if there's no next one
// We can also use previous column if there's no next one (this is used when doing an auto-fit on the right-most stretch column)
if (column_1 == NULL)
column_1 = (column_0->PrevEnabledColumn != -1) ? &table->Columns[column_0->PrevEnabledColumn] : NULL;
if (column_1 == NULL)
@ -1916,6 +1922,7 @@ void ImGui::TableSetColumnWidth(int column_n, float width)
}
else
{
// At this point column_1 is the next OR previous column and we know it is a stretch column.
// (old_a + old_b == new_a + new_b) --> (new_a == old_a + old_b - new_b)
float column_1_width = ImMax(column_1->WidthRequest - (column_0_width - column_0->WidthRequest), min_width);
column_0_width = column_0->WidthRequest + column_1->WidthRequest - column_1_width;
@ -1946,7 +1953,7 @@ void ImGui::TableSetColumnWidthAutoAll(ImGuiTable* table)
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
{
ImGuiTableColumn* column = &table->Columns[column_n];
if (!column->IsEnabled)
if (!column->IsEnabled && !(column->Flags & ImGuiTableColumnFlags_WidthStretch)) // Can reset weight of hidden stretch column
continue;
column->CannotSkipItemsQueue = (1 << 0);
column->AutoFitQueue = (1 << 1);
@ -1977,7 +1984,8 @@ void ImGui::TableUpdateColumnsWeightFromWidth(ImGuiTable* table)
ImGuiTableColumn* column = &table->Columns[column_n];
if (!column->IsEnabled || !(column->Flags & ImGuiTableColumnFlags_WidthStretch))
continue;
column->StretchWeight = ((column->WidthRequest + 0.0f) / visible_width) * visible_weight;
column->StretchWeight = (column->WidthRequest / visible_width) * visible_weight;
IM_ASSERT(column->StretchWeight > 0.0f);
}
}
@ -3276,6 +3284,10 @@ void ImGui::DebugNodeTable(ImGuiTable* table)
BulletText("HoveredColumnBody: %d, HoveredColumnBorder: %d", table->HoveredColumnBody, table->HoveredColumnBorder);
BulletText("ResizedColumn: %d, ReorderColumn: %d, HeldHeaderColumn: %d", table->ResizedColumn, table->ReorderColumn, table->HeldHeaderColumn);
//BulletText("BgDrawChannels: %d/%d", 0, table->BgDrawChannelUnfrozen);
float sum_weights = 0.0f;
for (int n = 0; n < table->ColumnsCount; n++)
if (table->Columns[n].Flags & ImGuiTableColumnFlags_WidthStretch)
sum_weights += table->Columns[n].StretchWeight;
for (int n = 0; n < table->ColumnsCount; n++)
{
ImGuiTableColumn* column = &table->Columns[n];
@ -3283,13 +3295,13 @@ void ImGui::DebugNodeTable(ImGuiTable* table)
ImFormatString(buf, IM_ARRAYSIZE(buf),
"Column %d order %d name '%s': offset %+.2f to %+.2f\n"
"Enabled: %d, VisibleX/Y: %d/%d, RequestOutput: %d, SkipItems: %d, DrawChannels: %d,%d\n"
"WidthGiven: %.1f, Request/Auto: %.1f/%.1f, StretchWeight: %.3f\n"
"WidthGiven: %.1f, Request/Auto: %.1f/%.1f, StretchWeight: %.3f (%.1f%%)\n"
"MinX: %.1f, MaxX: %.1f (%+.1f), ClipRect: %.1f to %.1f (+%.1f)\n"
"ContentWidth: %.1f,%.1f, HeadersUsed/Ideal %.1f/%.1f\n"
"Sort: %d%s, UserID: 0x%08X, Flags: 0x%04X: %s%s%s%s..",
n, column->DisplayOrder, name, column->MinX - table->WorkRect.Min.x, column->MaxX - table->WorkRect.Min.x,
column->IsEnabled, column->IsVisibleX, column->IsVisibleY, column->IsRequestOutput, column->IsSkipItems, column->DrawChannelFrozen, column->DrawChannelUnfrozen,
column->WidthGiven, column->WidthRequest, column->WidthAuto, column->StretchWeight,
column->WidthGiven, column->WidthRequest, column->WidthAuto, column->StretchWeight, (column->StretchWeight / sum_weights) * 100.0f,
column->MinX, column->MaxX, column->MaxX - column->MinX, column->ClipRect.Min.x, column->ClipRect.Max.x, column->ClipRect.Max.x - column->ClipRect.Min.x,
column->ContentMaxXFrozen - column->WorkMinX, column->ContentMaxXUnfrozen - column->WorkMinX, column->ContentMaxXHeadersUsed - column->WorkMinX, column->ContentMaxXHeadersIdeal - column->WorkMinX,
column->SortOrder, (column->SortDirection == ImGuiSortDirection_Ascending) ? " (Asc)" : (column->SortDirection == ImGuiSortDirection_Descending) ? " (Des)" : "", column->UserID, column->Flags,