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Tables: Internal: Maintain InnerRect to further clarify some code. Renamed Bg1 fields to Bg2 (used by Selectable) as the other handles Bg0+Bg1.

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ocornut
2020-12-18 12:18:34 +01:00
parent ad83976b35
commit 30468829c2
4 changed files with 42 additions and 32 deletions
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56
imgui_tables.cpp
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@ -177,8 +177,8 @@ Index of this file:
// Configuration
static const int TABLE_DRAW_CHANNEL_BG0 = 0;
static const int TABLE_DRAW_CHANNEL_BG1_FROZEN = 1;
static const int TABLE_DRAW_CHANNEL_NOCLIP = 2; // When using ImGuiTableFlags_NoClip
static const int TABLE_DRAW_CHANNEL_BG2_FROZEN = 1;
static const int TABLE_DRAW_CHANNEL_NOCLIP = 2; // When using ImGuiTableFlags_NoClip (this becomes the last visible channel)
static const float TABLE_BORDER_SIZE = 1.0f; // FIXME-TABLE: Currently hard-coded because of clipping assumptions with outer borders rendering.
static const float TABLE_RESIZE_SEPARATOR_HALF_THICKNESS = 4.0f; // Extend outside inner borders.
static const float TABLE_RESIZE_SEPARATOR_FEEDBACK_TIMER = 0.06f; // Delay/timer before making the hover feedback (color+cursor) visible because tables/columns tends to be more cramped.
@ -278,8 +278,6 @@ bool ImGui::BeginTableEx(const char* name, ImGuiID id, int columns_count, ImG
table->ColumnsCount = columns_count;
table->IsLayoutLocked = false;
table->InnerWidth = inner_width;
table->OuterRect = outer_rect;
table->WorkRect = outer_rect;
table->IsOuterRectFitX = (outer_size.x >= -1.0f && outer_size.x <= 0.0f); // Bit ambiguous
// When not using a child window, WorkRect.Max will grow as we append contents.
@ -303,12 +301,19 @@ bool ImGui::BeginTableEx(const char* name, ImGuiID id, int columns_count, ImG
// Create scrolling region (without border and zero window padding)
ImGuiWindowFlags child_flags = (flags & ImGuiTableFlags_ScrollX) ? ImGuiWindowFlags_HorizontalScrollbar : ImGuiWindowFlags_None;
BeginChildEx(name, instance_id, table->OuterRect.GetSize(), false, child_flags);
BeginChildEx(name, instance_id, outer_rect.GetSize(), false, child_flags);
table->InnerWindow = g.CurrentWindow;
table->WorkRect = table->InnerWindow->WorkRect;
table->OuterRect = table->InnerWindow->Rect();
table->InnerRect = table->InnerWindow->InnerRect;
IM_ASSERT(table->InnerWindow->WindowPadding.x == 0.0f && table->InnerWindow->WindowPadding.y == 0.0f && table->InnerWindow->WindowBorderSize == 0.0f);
}
else
{
// For non-scrolling tables, WorkRect == OuterRect == InnerRect.
// But at this point we do NOT have a correct value for .Max.y (unless a height has been explicitly passed in). It will only be updated in EndTable().
table->WorkRect = table->OuterRect = table->InnerRect = outer_rect;
}
// Push a standardized ID for both child-using and not-child-using tables
PushOverrideID(instance_id);
@ -1148,12 +1153,13 @@ void ImGui::EndTable()
inner_window->DC.CursorMaxPos = table->HostBackupCursorMaxPos;
if (inner_window != outer_window)
{
table->OuterRect.Max.y = ImMax(table->OuterRect.Max.y, inner_window->Pos.y + inner_window->Size.y);
// Both OuterRect/InnerRect are valid from BeginTable
inner_window->DC.CursorMaxPos.y = table->RowPosY2;
}
else if (!(flags & ImGuiTableFlags_NoHostExtendY))
{
table->OuterRect.Max.y = ImMax(table->OuterRect.Max.y, inner_window->DC.CursorPos.y);
// Patch OuterRect/InnerRect height
table->OuterRect.Max.y = table->InnerRect.Max.y = ImMax(table->OuterRect.Max.y, inner_window->DC.CursorPos.y);
inner_window->DC.CursorMaxPos.y = table->RowPosY2;
}
table->WorkRect.Max.y = ImMax(table->WorkRect.Max.y, table->OuterRect.Max.y);
@ -1166,7 +1172,6 @@ void ImGui::EndTable()
// Draw borders
if ((flags & ImGuiTableFlags_Borders) != 0)
TableDrawBorders(table);
table->DrawSplitter.SetCurrentChannel(inner_window->DrawList, 0);
// Store content width reference for each column (before attempting to merge draw calls)
const float backup_outer_cursor_pos_x = outer_window->DC.CursorPos.x;
@ -1192,6 +1197,7 @@ void ImGui::EndTable()
#endif
// Flatten channels and merge draw calls
table->DrawSplitter.SetCurrentChannel(inner_window->DrawList, 0);
if ((table->Flags & ImGuiTableFlags_NoClip) == 0)
TableMergeDrawChannels(table);
table->DrawSplitter.Merge(inner_window->DrawList);
@ -1563,7 +1569,6 @@ void ImGui::TableEndRow(ImGuiTable* table)
// Row background fill
const float bg_y1 = table->RowPosY1;
const float bg_y2 = table->RowPosY2;
const bool unfreeze_rows_actual = (table->CurrentRow + 1 == table->FreezeRowsCount);
const bool unfreeze_rows_request = (table->CurrentRow + 1 == table->FreezeRowsRequest);
if (table->CurrentRow == 0)
@ -1654,7 +1659,7 @@ void ImGui::TableEndRow(ImGuiTable* table)
float y0 = ImMax(table->RowPosY2 + 1, window->InnerClipRect.Min.y);
table->BgClipRect.Min.y = table->BgClipRectForDrawCmd.Min.y = ImMin(y0, window->InnerClipRect.Max.y);
table->BgClipRect.Max.y = table->BgClipRectForDrawCmd.Max.y = window->InnerClipRect.Max.y;
table->Bg1DrawChannelCurrent = table->Bg1DrawChannelUnfrozen;
table->Bg2DrawChannelCurrent = table->Bg2DrawChannelUnfrozen;
IM_ASSERT(table->BgClipRectForDrawCmd.Min.y <= table->BgClipRectForDrawCmd.Max.y);
float row_height = table->RowPosY2 - table->RowPosY1;
@ -2004,6 +2009,8 @@ void ImGui::TableUpdateColumnsWeightFromWidth(ImGuiTable* table)
// - TableDrawBorders() [Internal]
//-------------------------------------------------------------------------
// Bg2 is used by Selectable (and possibly other widgets) to render to the background.
// Unlike our Bg0/1 channel which we uses for RowBg/CellBg/Borders and where we guarantee all shapes to be CPU-clipped, the Bg2 channel being widgets-facing will rely on regular ClipRect.
void ImGui::TablePushBackgroundChannel()
{
ImGuiContext& g = *GImGui;
@ -2011,9 +2018,9 @@ void ImGui::TablePushBackgroundChannel()
ImGuiTable* table = g.CurrentTable;
// Optimization: avoid SetCurrentChannel() + PushClipRect()
table->HostBackupClipRect = window->ClipRect;
table->HostBackupInnerClipRect = window->ClipRect;
SetWindowClipRectBeforeSetChannel(window, table->BgClipRectForDrawCmd);
table->DrawSplitter.SetCurrentChannel(window->DrawList, table->Bg1DrawChannelCurrent);
table->DrawSplitter.SetCurrentChannel(window->DrawList, table->Bg2DrawChannelCurrent);
}
void ImGui::TablePopBackgroundChannel()
@ -2024,7 +2031,7 @@ void ImGui::TablePopBackgroundChannel()
ImGuiTableColumn* column = &table->Columns[table->CurrentColumn];
// Optimization: avoid PopClipRect() + SetCurrentChannel()
SetWindowClipRectBeforeSetChannel(window, table->HostBackupClipRect);
SetWindowClipRectBeforeSetChannel(window, table->HostBackupInnerClipRect);
table->DrawSplitter.SetCurrentChannel(window->DrawList, column->DrawChannelCurrent);
}
@ -2036,10 +2043,10 @@ void ImGui::TablePopBackgroundChannel()
// - After crossing FreezeRowsCount, all columns see their current draw channel changed to a second set of channels.
// - We only use the dummy draw channel so we can push a null clipping rectangle into it without affecting other
// channels, while simplifying per-row/per-cell overhead. It will be empty and discarded when merged.
// - We allocate 1 or 2 background draw channels. This is because we know PushTableBackground() is only used for
// - We allocate 1 or 2 background draw channels. This is because we know TablePushBackgroundChannel() is only used for
// horizontal spanning. If we allowed vertical spanning we'd need one background draw channel per merge group (1-4).
// Draw channel allocation (before merging):
// - NoClip --> 2+D+1 channels: bg0 + bg1 + foreground (same clip rect == 1 draw call) (FIXME-TABLE: could merge bg1 and foreground?)
// - NoClip --> 2+D+1 channels: bg0/1 + bg2 + foreground (same clip rect == 1 draw call) (FIXME-TABLE: could merge bg2 and foreground?)
// - Clip --> 2+D+N channels
// - FreezeRows --> 2+D+N*2 (unless scrolling value is zero)
// - FreezeRows || FreezeColunns --> 3+D+N*2 (unless scrolling value is zero)
@ -2053,8 +2060,8 @@ void ImGui::TableSetupDrawChannels(ImGuiTable* table)
const int channels_total = channels_for_bg + (channels_for_row * freeze_row_multiplier) + channels_for_dummy;
table->DrawSplitter.Split(table->InnerWindow->DrawList, channels_total);
table->DummyDrawChannel = (ImGuiTableDrawChannelIdx)((channels_for_dummy > 0) ? channels_total - 1 : -1);
table->Bg1DrawChannelCurrent = TABLE_DRAW_CHANNEL_BG1_FROZEN;
table->Bg1DrawChannelUnfrozen = (ImGuiTableDrawChannelIdx)((table->FreezeRowsCount > 0) ? 2 + channels_for_row : TABLE_DRAW_CHANNEL_BG1_FROZEN);
table->Bg2DrawChannelCurrent = TABLE_DRAW_CHANNEL_BG2_FROZEN;
table->Bg2DrawChannelUnfrozen = (ImGuiTableDrawChannelIdx)((table->FreezeRowsCount > 0) ? 2 + channels_for_row : TABLE_DRAW_CHANNEL_BG2_FROZEN);
int draw_channel_current = 2;
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
@ -2117,6 +2124,7 @@ void ImGui::TableMergeDrawChannels(ImGuiTable* table)
ImDrawListSplitter* splitter = &table->DrawSplitter;
const bool has_freeze_v = (table->FreezeRowsCount > 0);
const bool has_freeze_h = (table->FreezeColumnsCount > 0);
IM_ASSERT(splitter->_Current == 0);
// Track which groups we are going to attempt to merge, and which channels goes into each group.
struct MergeGroup
@ -2200,15 +2208,15 @@ void ImGui::TableMergeDrawChannels(ImGuiTable* table)
// 2. Rewrite channel list in our preferred order
if (merge_group_mask != 0)
{
// We skip channel 0 (Bg0) and 1 (Bg1 frozen) from the shuffling since they won't move - see channels allocation in TableSetupDrawChannels().
// We skip channel 0 (Bg0/Bg1) and 1 (Bg2 frozen) from the shuffling since they won't move - see channels allocation in TableSetupDrawChannels().
const int LEADING_DRAW_CHANNELS = 2;
g.DrawChannelsTempMergeBuffer.resize(splitter->_Count - LEADING_DRAW_CHANNELS); // Use shared temporary storage so the allocation gets amortized
ImDrawChannel* dst_tmp = g.DrawChannelsTempMergeBuffer.Data;
ImBitArray<IMGUI_TABLE_MAX_DRAW_CHANNELS> remaining_mask; // We need 132-bit of storage
remaining_mask.ClearBits();
remaining_mask.SetBitRange(LEADING_DRAW_CHANNELS, splitter->_Count - 1);
remaining_mask.ClearBit(table->Bg1DrawChannelUnfrozen);
IM_ASSERT(has_freeze_v == false || table->Bg1DrawChannelUnfrozen != TABLE_DRAW_CHANNEL_BG1_FROZEN);
remaining_mask.ClearBit(table->Bg2DrawChannelUnfrozen);
IM_ASSERT(has_freeze_v == false || table->Bg2DrawChannelUnfrozen != TABLE_DRAW_CHANNEL_BG2_FROZEN);
int remaining_count = splitter->_Count - (has_freeze_v ? LEADING_DRAW_CHANNELS + 1 : LEADING_DRAW_CHANNELS);
//ImRect host_rect = (table->InnerWindow == table->OuterWindow) ? table->InnerClipRect : table->HostClipRect;
ImRect host_rect = table->HostClipRect;
@ -2257,9 +2265,9 @@ void ImGui::TableMergeDrawChannels(ImGuiTable* table)
}
}
// Make sure Bg1DrawChannelUnfrozen appears in the middle of our groups (whereas Bg0 and Bg1 frozen are fixed to 0 and 1)
// Make sure Bg2DrawChannelUnfrozen appears in the middle of our groups (whereas Bg0/Bg1 and Bg2 frozen are fixed to 0 and 1)
if (merge_group_n == 1 && has_freeze_v)
memcpy(dst_tmp++, &splitter->_Channels[table->Bg1DrawChannelUnfrozen], sizeof(ImDrawChannel));
memcpy(dst_tmp++, &splitter->_Channels[table->Bg2DrawChannelUnfrozen], sizeof(ImDrawChannel));
}
// Append unmergeable channels that we didn't reorder at the end of the list
@ -2289,8 +2297,8 @@ void ImGui::TableDrawBorders(ImGuiTable* table)
// Draw inner border and resizing feedback
const float border_size = TABLE_BORDER_SIZE;
const float draw_y1 = table->OuterRect.Min.y;
const float draw_y2_body = table->OuterRect.Max.y;
const float draw_y1 = table->InnerRect.Min.y;
const float draw_y2_body = table->InnerRect.Max.y;
const float draw_y2_head = table->IsUsingHeaders ? ((table->FreezeRowsCount >= 1 ? table->OuterRect.Min.y : table->WorkRect.Min.y) + table->LastFirstRowHeight) : draw_y1;
if (table->Flags & ImGuiTableFlags_BordersInnerV)