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Tables: Shuffled ordering of draw channels merge group so vertically unfrozen ones come, allowing us to split background channels in two.

pull/3657/head
ocornut 4 years ago
parent
d3222086f0
commit
9918b2f147
1 changed files with 19 additions and 19 deletions
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  1. 38
      imgui_tables.cpp

38
imgui_tables.cpp
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@ -1162,7 +1162,7 @@ void ImGui::TableDrawBorders(ImGuiTable* table)
// Either solution currently won't allow us to use a larger border size: the border would clipped.
ImRect outer_border = table->OuterRect;
const ImU32 outer_col = table->BorderColorStrong;
if (inner_window != outer_window)
if (inner_window != outer_window) // FIXME-TABLE
outer_border.Expand(1.0f);
if ((table->Flags & ImGuiTableFlags_BordersOuter) == ImGuiTableFlags_BordersOuter)
{
@ -1356,8 +1356,8 @@ void ImGui::TableUpdateDrawChannels(ImGuiTable* table)
// We reorder draw commands by arranging them into a maximum of 4 distinct groups:
//
// 1 group: 2 groups: 2 groups: 4 groups:
// [ 0. ] no freeze [ 0. ] row freeze [ 01 ] col freeze [ 02 ] row+col freeze
// [ .. ] or no scroll [ 1. ] and v-scroll [ .. ] and h-scroll [ 13 ] and v+h-scroll
// [ 0. ] no freeze [ 0. ] row freeze [ 01 ] col freeze [ 01 ] row+col freeze
// [ .. ] or no scroll [ 2. ] and v-scroll [ .. ] and h-scroll [ 23 ] and v+h-scroll
//
// Each column itself can use 1 channel (row freeze disabled) or 2 channels (row freeze enabled).
// When the contents of a column didn't stray off its limit, we move its channels into the corresponding group
@ -1380,8 +1380,8 @@ void ImGui::TableReorderDrawChannelsForMerge(ImGuiTable* table)
{
ImGuiContext& g = *GImGui;
ImDrawListSplitter* splitter = &table->DrawSplitter;
const bool is_frozen_v = (table->FreezeRowsCount > 0);
const bool is_frozen_h = (table->FreezeColumnsCount > 0);
const bool has_freeze_v = (table->FreezeRowsCount > 0);
const bool has_freeze_h = (table->FreezeColumnsCount > 0);
// Track which groups we are going to attempt to merge, and which channels goes into each group.
struct MergeGroup
@ -1401,7 +1401,7 @@ void ImGui::TableReorderDrawChannelsForMerge(ImGuiTable* table)
continue;
ImGuiTableColumn* column = &table->Columns[column_n];
const int merge_group_sub_count = is_frozen_v ? 2 : 1;
const int merge_group_sub_count = has_freeze_v ? 2 : 1;
for (int merge_group_sub_n = 0; merge_group_sub_n < merge_group_sub_count; merge_group_sub_n++)
{
const int channel_no = (merge_group_sub_n == 0) ? column->DrawChannelFrozen : column->DrawChannelUnfrozen;
@ -1418,18 +1418,18 @@ void ImGui::TableReorderDrawChannelsForMerge(ImGuiTable* table)
if (!(column->Flags & ImGuiTableColumnFlags_NoClipX))
{
float content_max_x;
if (merge_group_sub_count == 1) // No row freeze (same as testing !is_frozen_v)
content_max_x = ImMax(column->ContentMaxXUnfrozen, column->ContentMaxXHeadersUsed);
else if (merge_group_sub_n == 0) // Row freeze: use width before freeze
content_max_x = ImMax(column->ContentMaxXFrozen, column->ContentMaxXHeadersUsed);
else // Row freeze: use width after freeze
content_max_x = column->ContentMaxXUnfrozen;
if (!has_freeze_v)
content_max_x = ImMax(column->ContentMaxXUnfrozen, column->ContentMaxXHeadersUsed); // No row freeze
else if (merge_group_sub_n == 0)
content_max_x = ImMax(column->ContentMaxXFrozen, column->ContentMaxXHeadersUsed); // Row freeze: use width before freeze
else
content_max_x = column->ContentMaxXUnfrozen; // Row freeze: use width after freeze
float content_width = content_max_x - column->ContentMinX;
if (content_width > column->WidthGiven + table->CellPaddingX * 1.0f)
continue;
}
const int merge_group_n = (is_frozen_h && column_n < table->FreezeColumnsCount ? 0 : 2) + (is_frozen_v ? merge_group_sub_n : 1);
const int merge_group_n = (has_freeze_h && column_n < table->FreezeColumnsCount ? 0 : 1) + (has_freeze_v && merge_group_sub_n == 0 ? 0 : 2);
IM_ASSERT(channel_no < IMGUI_TABLE_MAX_DRAW_CHANNELS);
MergeGroup* merge_group = &merge_groups[merge_group_n];
if (merge_group->ChannelsCount == 0)
@ -1486,13 +1486,13 @@ void ImGui::TableReorderDrawChannelsForMerge(ImGuiTable* table)
// - Columns can use padding and have left-most ClipRect.Min.x and right-most ClipRect.Max.x != from host ClipRect -> will extend and match host ClipRect -> will merge
// FIXME-TABLE FIXME-WORKRECT: We are wasting a merge opportunity on tables without scrolling if column doesn't fit
// within host clip rect, solely because of the half-padding difference between window->WorkRect and window->InnerClipRect.
if ((merge_group_n & 2) == 0 || !is_frozen_h)
if ((merge_group_n & 1) == 0 || !has_freeze_h)
merge_clip_rect.Min.x = ImMin(merge_clip_rect.Min.x, table->HostClipRect.Min.x);
if ((merge_group_n & 1) == 0 || !is_frozen_v)
if ((merge_group_n & 2) == 0 || !has_freeze_v)
merge_clip_rect.Min.y = ImMin(merge_clip_rect.Min.y, table->HostClipRect.Min.y);
if ((merge_group_n & 2) != 0)
if ((merge_group_n & 1) != 0)
merge_clip_rect.Max.x = ImMax(merge_clip_rect.Max.x, table->HostClipRect.Max.x);
if ((merge_group_n & 1) != 0 && (table->Flags & ImGuiTableFlags_NoHostExtendY) == 0)
if ((merge_group_n & 2) != 0 && (table->Flags & ImGuiTableFlags_NoHostExtendY) == 0)
merge_clip_rect.Max.y = ImMax(merge_clip_rect.Max.y, table->HostClipRect.Max.y);
#if 0
GetOverlayDrawList()->AddRect(merge_group->ClipRect.Min, merge_group->ClipRect.Max, IM_COL32(255, 0, 0, 200), 0.0f, ~0, 1.0f);
@ -1627,7 +1627,7 @@ void ImGui::TableNextRow(ImGuiTableRowFlags row_flags, float row_min_height)
if (table->CurrentRow == -1)
TableUpdateLayout(table);
else if (table->IsInsideRow)
if (table->IsInsideRow)
TableEndRow(table);
table->LastRowFlags = table->RowFlags;
@ -1726,7 +1726,7 @@ void ImGui::TableEndRow(ImGuiTable* table)
const bool draw_strong_bottom_border = unfreeze_rows_actual;
if ((bg_col0 | bg_col1 | border_col) != 0 || draw_strong_bottom_border || draw_cell_bg_color)
{
// In theory we could call SetWindowClipRectBeforeChannelChange() but since we know TableEndRow() is
// In theory we could call SetWindowClipRectBeforeSetChannel() but since we know TableEndRow() is
// always followed by a change of clipping rectangle we perform the smallest overwrite possible here.
window->DrawList->_CmdHeader.ClipRect = table->HostClipRect.ToVec4();
table->DrawSplitter.SetCurrentChannel(window->DrawList, 0);

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