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Internals: Refactor: Moved all Columns code from imgui.cpp to imgui_widgets.cpp (#125)
Also moved NextColumn between BeginColumn and NextColumn which makes it easier to work on that code.
This commit is contained in:
omar
parent
ea79992d9a
commit
1f3feb481e
391
imgui.cpp
391
imgui.cpp
@ -75,7 +75,6 @@ CODE
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// [SECTION] TOOLTIPS
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// [SECTION] TOOLTIPS
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// [SECTION] POPUPS
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// [SECTION] POPUPS
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// [SECTION] KEYBOARD/GAMEPAD NAVIGATION
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// [SECTION] KEYBOARD/GAMEPAD NAVIGATION
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// [SECTION] COLUMNS
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// [SECTION] DRAG AND DROP
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// [SECTION] DRAG AND DROP
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// [SECTION] LOGGING/CAPTURING
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// [SECTION] LOGGING/CAPTURING
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// [SECTION] SETTINGS
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// [SECTION] SETTINGS
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@ -8664,394 +8663,6 @@ void ImGui::NavUpdateWindowingList()
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PopStyleVar();
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PopStyleVar();
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}
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}
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//-----------------------------------------------------------------------------
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// [SECTION] COLUMNS
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// In the current version, Columns are very weak. Needs to be replaced with a more full-featured system.
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//-----------------------------------------------------------------------------
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void ImGui::NextColumn()
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{
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ImGuiWindow* window = GetCurrentWindow();
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if (window->SkipItems || window->DC.CurrentColumns == NULL)
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return;
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ImGuiContext& g = *GImGui;
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ImGuiColumns* columns = window->DC.CurrentColumns;
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if (columns->Count == 1)
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{
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window->DC.CursorPos.x = (float)(int)(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);
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IM_ASSERT(columns->Current == 0);
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return;
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}
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PopItemWidth();
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PopClipRect();
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columns->LineMaxY = ImMax(columns->LineMaxY, window->DC.CursorPos.y);
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if (++columns->Current < columns->Count)
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{
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// Columns 1+ cancel out IndentX
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// FIXME-COLUMNS: Unnecessary, could be locked?
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window->DC.ColumnsOffset.x = GetColumnOffset(columns->Current) - window->DC.Indent.x + g.Style.ItemSpacing.x;
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window->DrawList->ChannelsSetCurrent(columns->Current + 1);
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}
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else
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{
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// New row/line
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window->DC.ColumnsOffset.x = 0.0f;
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window->DrawList->ChannelsSetCurrent(1);
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columns->Current = 0;
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columns->LineMinY = columns->LineMaxY;
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}
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window->DC.CursorPos.x = (float)(int)(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);
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window->DC.CursorPos.y = columns->LineMinY;
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window->DC.CurrLineSize = ImVec2(0.0f, 0.0f);
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window->DC.CurrLineTextBaseOffset = 0.0f;
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PushColumnClipRect(columns->Current); // FIXME-COLUMNS: Could it be an overwrite?
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// FIXME-COLUMNS: Share code with BeginColumns() - move code on columns setup.
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float offset_0 = GetColumnOffset(columns->Current);
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float offset_1 = GetColumnOffset(columns->Current + 1);
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float width = offset_1 - offset_0;
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PushItemWidth(width * 0.65f);
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window->WorkRect.Max.x = window->Pos.x + offset_1 - window->WindowPadding.x;
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}
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int ImGui::GetColumnIndex()
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{
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ImGuiWindow* window = GetCurrentWindowRead();
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return window->DC.CurrentColumns ? window->DC.CurrentColumns->Current : 0;
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}
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int ImGui::GetColumnsCount()
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{
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ImGuiWindow* window = GetCurrentWindowRead();
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return window->DC.CurrentColumns ? window->DC.CurrentColumns->Count : 1;
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}
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static float OffsetNormToPixels(const ImGuiColumns* columns, float offset_norm)
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{
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return offset_norm * (columns->OffMaxX - columns->OffMinX);
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}
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static float PixelsToOffsetNorm(const ImGuiColumns* columns, float offset)
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{
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return offset / (columns->OffMaxX - columns->OffMinX);
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}
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static const float COLUMNS_HIT_RECT_HALF_WIDTH = 4.0f;
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static float GetDraggedColumnOffset(ImGuiColumns* columns, int column_index)
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{
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// Active (dragged) column always follow mouse. The reason we need this is that dragging a column to the right edge of an auto-resizing
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// window creates a feedback loop because we store normalized positions. So while dragging we enforce absolute positioning.
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = g.CurrentWindow;
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IM_ASSERT(column_index > 0); // We are not supposed to drag column 0.
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IM_ASSERT(g.ActiveId == columns->ID + ImGuiID(column_index));
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float x = g.IO.MousePos.x - g.ActiveIdClickOffset.x + COLUMNS_HIT_RECT_HALF_WIDTH - window->Pos.x;
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x = ImMax(x, ImGui::GetColumnOffset(column_index - 1) + g.Style.ColumnsMinSpacing);
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if ((columns->Flags & ImGuiColumnsFlags_NoPreserveWidths))
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x = ImMin(x, ImGui::GetColumnOffset(column_index + 1) - g.Style.ColumnsMinSpacing);
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return x;
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}
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float ImGui::GetColumnOffset(int column_index)
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{
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ImGuiWindow* window = GetCurrentWindowRead();
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ImGuiColumns* columns = window->DC.CurrentColumns;
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IM_ASSERT(columns != NULL);
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if (column_index < 0)
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column_index = columns->Current;
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IM_ASSERT(column_index < columns->Columns.Size);
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const float t = columns->Columns[column_index].OffsetNorm;
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const float x_offset = ImLerp(columns->OffMinX, columns->OffMaxX, t);
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return x_offset;
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}
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static float GetColumnWidthEx(ImGuiColumns* columns, int column_index, bool before_resize = false)
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{
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if (column_index < 0)
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column_index = columns->Current;
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float offset_norm;
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if (before_resize)
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offset_norm = columns->Columns[column_index + 1].OffsetNormBeforeResize - columns->Columns[column_index].OffsetNormBeforeResize;
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else
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offset_norm = columns->Columns[column_index + 1].OffsetNorm - columns->Columns[column_index].OffsetNorm;
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return OffsetNormToPixels(columns, offset_norm);
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}
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float ImGui::GetColumnWidth(int column_index)
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{
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ImGuiWindow* window = GetCurrentWindowRead();
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ImGuiColumns* columns = window->DC.CurrentColumns;
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IM_ASSERT(columns != NULL);
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if (column_index < 0)
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column_index = columns->Current;
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return OffsetNormToPixels(columns, columns->Columns[column_index + 1].OffsetNorm - columns->Columns[column_index].OffsetNorm);
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}
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void ImGui::SetColumnOffset(int column_index, float offset)
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{
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = g.CurrentWindow;
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ImGuiColumns* columns = window->DC.CurrentColumns;
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IM_ASSERT(columns != NULL);
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if (column_index < 0)
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column_index = columns->Current;
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IM_ASSERT(column_index < columns->Columns.Size);
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const bool preserve_width = !(columns->Flags & ImGuiColumnsFlags_NoPreserveWidths) && (column_index < columns->Count-1);
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const float width = preserve_width ? GetColumnWidthEx(columns, column_index, columns->IsBeingResized) : 0.0f;
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if (!(columns->Flags & ImGuiColumnsFlags_NoForceWithinWindow))
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offset = ImMin(offset, columns->OffMaxX - g.Style.ColumnsMinSpacing * (columns->Count - column_index));
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columns->Columns[column_index].OffsetNorm = PixelsToOffsetNorm(columns, offset - columns->OffMinX);
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if (preserve_width)
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SetColumnOffset(column_index + 1, offset + ImMax(g.Style.ColumnsMinSpacing, width));
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}
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void ImGui::SetColumnWidth(int column_index, float width)
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{
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ImGuiWindow* window = GetCurrentWindowRead();
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ImGuiColumns* columns = window->DC.CurrentColumns;
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IM_ASSERT(columns != NULL);
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if (column_index < 0)
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column_index = columns->Current;
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SetColumnOffset(column_index + 1, GetColumnOffset(column_index) + width);
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}
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void ImGui::PushColumnClipRect(int column_index)
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{
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ImGuiWindow* window = GetCurrentWindowRead();
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ImGuiColumns* columns = window->DC.CurrentColumns;
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if (column_index < 0)
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column_index = columns->Current;
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ImGuiColumnData* column = &columns->Columns[column_index];
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PushClipRect(column->ClipRect.Min, column->ClipRect.Max, false);
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}
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// Get into the columns background draw command (which is generally the same draw command as before we called BeginColumns)
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void ImGui::PushColumnsBackground()
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{
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ImGuiWindow* window = GetCurrentWindowRead();
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ImGuiColumns* columns = window->DC.CurrentColumns;
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window->DrawList->ChannelsSetCurrent(0);
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int cmd_size = window->DrawList->CmdBuffer.Size;
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PushClipRect(columns->HostClipRect.Min, columns->HostClipRect.Max, false);
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IM_UNUSED(cmd_size);
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IM_ASSERT(cmd_size == window->DrawList->CmdBuffer.Size); // Being in channel 0 this should not have created an ImDrawCmd
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}
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void ImGui::PopColumnsBackground()
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{
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ImGuiWindow* window = GetCurrentWindowRead();
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ImGuiColumns* columns = window->DC.CurrentColumns;
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window->DrawList->ChannelsSetCurrent(columns->Current + 1);
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PopClipRect();
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}
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ImGuiColumns* ImGui::FindOrCreateColumns(ImGuiWindow* window, ImGuiID id)
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{
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// We have few columns per window so for now we don't need bother much with turning this into a faster lookup.
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for (int n = 0; n < window->ColumnsStorage.Size; n++)
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if (window->ColumnsStorage[n].ID == id)
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return &window->ColumnsStorage[n];
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window->ColumnsStorage.push_back(ImGuiColumns());
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ImGuiColumns* columns = &window->ColumnsStorage.back();
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columns->ID = id;
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return columns;
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}
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ImGuiID ImGui::GetColumnsID(const char* str_id, int columns_count)
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{
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ImGuiWindow* window = GetCurrentWindow();
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// Differentiate column ID with an arbitrary prefix for cases where users name their columns set the same as another widget.
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// In addition, when an identifier isn't explicitly provided we include the number of columns in the hash to make it uniquer.
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PushID(0x11223347 + (str_id ? 0 : columns_count));
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ImGuiID id = window->GetID(str_id ? str_id : "columns");
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PopID();
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return id;
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}
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void ImGui::BeginColumns(const char* str_id, int columns_count, ImGuiColumnsFlags flags)
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{
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = GetCurrentWindow();
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IM_ASSERT(columns_count >= 1);
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IM_ASSERT(window->DC.CurrentColumns == NULL); // Nested columns are currently not supported
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// Acquire storage for the columns set
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ImGuiID id = GetColumnsID(str_id, columns_count);
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ImGuiColumns* columns = FindOrCreateColumns(window, id);
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IM_ASSERT(columns->ID == id);
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columns->Current = 0;
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columns->Count = columns_count;
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columns->Flags = flags;
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window->DC.CurrentColumns = columns;
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// Set state for first column
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columns->OffMinX = window->DC.Indent.x - g.Style.ItemSpacing.x;
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columns->OffMaxX = ImMax(window->WorkRect.Max.x - window->Pos.x, columns->OffMinX + 1.0f);
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columns->HostCursorPosY = window->DC.CursorPos.y;
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columns->HostCursorMaxPosX = window->DC.CursorMaxPos.x;
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columns->HostClipRect = window->ClipRect;
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columns->HostWorkRect = window->WorkRect;
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columns->LineMinY = columns->LineMaxY = window->DC.CursorPos.y;
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window->DC.ColumnsOffset.x = 0.0f;
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window->DC.CursorPos.x = (float)(int)(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);
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// Clear data if columns count changed
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if (columns->Columns.Size != 0 && columns->Columns.Size != columns_count + 1)
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columns->Columns.resize(0);
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// Initialize default widths
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columns->IsFirstFrame = (columns->Columns.Size == 0);
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if (columns->Columns.Size == 0)
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{
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columns->Columns.reserve(columns_count + 1);
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for (int n = 0; n < columns_count + 1; n++)
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{
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ImGuiColumnData column;
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column.OffsetNorm = n / (float)columns_count;
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columns->Columns.push_back(column);
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}
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}
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for (int n = 0; n < columns_count; n++)
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{
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// Compute clipping rectangle
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ImGuiColumnData* column = &columns->Columns[n];
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float clip_x1 = ImFloor(0.5f + window->Pos.x + GetColumnOffset(n));
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float clip_x2 = ImFloor(0.5f + window->Pos.x + GetColumnOffset(n + 1) - 1.0f);
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column->ClipRect = ImRect(clip_x1, -FLT_MAX, clip_x2, +FLT_MAX);
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column->ClipRect.ClipWith(window->ClipRect);
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}
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if (columns->Count > 1)
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{
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window->DrawList->ChannelsSplit(1 + columns->Count);
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window->DrawList->ChannelsSetCurrent(1);
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PushColumnClipRect(0);
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}
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float offset_0 = GetColumnOffset(columns->Current);
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float offset_1 = GetColumnOffset(columns->Current + 1);
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float width = offset_1 - offset_0;
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PushItemWidth(width * 0.65f);
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window->WorkRect.Max.x = window->Pos.x + offset_1 - window->WindowPadding.x;
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}
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void ImGui::EndColumns()
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{
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = GetCurrentWindow();
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ImGuiColumns* columns = window->DC.CurrentColumns;
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IM_ASSERT(columns != NULL);
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PopItemWidth();
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if (columns->Count > 1)
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{
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PopClipRect();
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window->DrawList->ChannelsMerge();
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}
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const ImGuiColumnsFlags flags = columns->Flags;
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columns->LineMaxY = ImMax(columns->LineMaxY, window->DC.CursorPos.y);
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window->DC.CursorPos.y = columns->LineMaxY;
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if (!(flags & ImGuiColumnsFlags_GrowParentContentsSize))
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window->DC.CursorMaxPos.x = columns->HostCursorMaxPosX; // Restore cursor max pos, as columns don't grow parent
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// Draw columns borders and handle resize
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// The IsBeingResized flag ensure we preserve pre-resize columns width so back-and-forth are not lossy
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bool is_being_resized = false;
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if (!(flags & ImGuiColumnsFlags_NoBorder) && !window->SkipItems)
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{
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// We clip Y boundaries CPU side because very long triangles are mishandled by some GPU drivers.
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const float y1 = ImMax(columns->HostCursorPosY, window->ClipRect.Min.y);
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const float y2 = ImMin(window->DC.CursorPos.y, window->ClipRect.Max.y);
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int dragging_column = -1;
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for (int n = 1; n < columns->Count; n++)
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{
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ImGuiColumnData* column = &columns->Columns[n];
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float x = window->Pos.x + GetColumnOffset(n);
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const ImGuiID column_id = columns->ID + ImGuiID(n);
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const float column_hit_hw = COLUMNS_HIT_RECT_HALF_WIDTH;
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const ImRect column_hit_rect(ImVec2(x - column_hit_hw, y1), ImVec2(x + column_hit_hw, y2));
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KeepAliveID(column_id);
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if (IsClippedEx(column_hit_rect, column_id, false))
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continue;
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bool hovered = false, held = false;
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|
||||||
if (!(flags & ImGuiColumnsFlags_NoResize))
|
|
||||||
{
|
|
||||||
ButtonBehavior(column_hit_rect, column_id, &hovered, &held);
|
|
||||||
if (hovered || held)
|
|
||||||
g.MouseCursor = ImGuiMouseCursor_ResizeEW;
|
|
||||||
if (held && !(column->Flags & ImGuiColumnsFlags_NoResize))
|
|
||||||
dragging_column = n;
|
|
||||||
}
|
|
||||||
|
|
||||||
// Draw column
|
|
||||||
const ImU32 col = GetColorU32(held ? ImGuiCol_SeparatorActive : hovered ? ImGuiCol_SeparatorHovered : ImGuiCol_Separator);
|
|
||||||
const float xi = (float)(int)x;
|
|
||||||
window->DrawList->AddLine(ImVec2(xi, y1 + 1.0f), ImVec2(xi, y2), col);
|
|
||||||
}
|
|
||||||
|
|
||||||
// Apply dragging after drawing the column lines, so our rendered lines are in sync with how items were displayed during the frame.
|
|
||||||
if (dragging_column != -1)
|
|
||||||
{
|
|
||||||
if (!columns->IsBeingResized)
|
|
||||||
for (int n = 0; n < columns->Count + 1; n++)
|
|
||||||
columns->Columns[n].OffsetNormBeforeResize = columns->Columns[n].OffsetNorm;
|
|
||||||
columns->IsBeingResized = is_being_resized = true;
|
|
||||||
float x = GetDraggedColumnOffset(columns, dragging_column);
|
|
||||||
SetColumnOffset(dragging_column, x);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
columns->IsBeingResized = is_being_resized;
|
|
||||||
|
|
||||||
window->WorkRect = columns->HostWorkRect;
|
|
||||||
window->DC.CurrentColumns = NULL;
|
|
||||||
window->DC.ColumnsOffset.x = 0.0f;
|
|
||||||
window->DC.CursorPos.x = (float)(int)(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);
|
|
||||||
}
|
|
||||||
|
|
||||||
// [2018-03: This is currently the only public API, while we are working on making BeginColumns/EndColumns user-facing]
|
|
||||||
void ImGui::Columns(int columns_count, const char* id, bool border)
|
|
||||||
{
|
|
||||||
ImGuiWindow* window = GetCurrentWindow();
|
|
||||||
IM_ASSERT(columns_count >= 1);
|
|
||||||
|
|
||||||
ImGuiColumnsFlags flags = (border ? 0 : ImGuiColumnsFlags_NoBorder);
|
|
||||||
//flags |= ImGuiColumnsFlags_NoPreserveWidths; // NB: Legacy behavior
|
|
||||||
ImGuiColumns* columns = window->DC.CurrentColumns;
|
|
||||||
if (columns != NULL && columns->Count == columns_count && columns->Flags == flags)
|
|
||||||
return;
|
|
||||||
|
|
||||||
if (columns != NULL)
|
|
||||||
EndColumns();
|
|
||||||
|
|
||||||
if (columns_count != 1)
|
|
||||||
BeginColumns(id, columns_count, flags);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
//-----------------------------------------------------------------------------
|
//-----------------------------------------------------------------------------
|
||||||
// [SECTION] DRAG AND DROP
|
// [SECTION] DRAG AND DROP
|
||||||
@ -10072,7 +9683,7 @@ void ImGui::ShowMetricsWindow(bool* p_open)
|
|||||||
return;
|
return;
|
||||||
ImGui::BulletText("Width: %.1f (MinX: %.1f, MaxX: %.1f)", columns->OffMaxX - columns->OffMinX, columns->OffMinX, columns->OffMaxX);
|
ImGui::BulletText("Width: %.1f (MinX: %.1f, MaxX: %.1f)", columns->OffMaxX - columns->OffMinX, columns->OffMinX, columns->OffMaxX);
|
||||||
for (int column_n = 0; column_n < columns->Columns.Size; column_n++)
|
for (int column_n = 0; column_n < columns->Columns.Size; column_n++)
|
||||||
ImGui::BulletText("Column %02d: OffsetNorm %.3f (= %.1f px)", column_n, columns->Columns[column_n].OffsetNorm, OffsetNormToPixels(columns, columns->Columns[column_n].OffsetNorm));
|
ImGui::BulletText("Column %02d: OffsetNorm %.3f (= %.1f px)", column_n, columns->Columns[column_n].OffsetNorm, GetColumnOffsetFromNorm(columns, columns->Columns[column_n].OffsetNorm));
|
||||||
ImGui::TreePop();
|
ImGui::TreePop();
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
@ -1563,6 +1563,8 @@ namespace ImGui
|
|||||||
IMGUI_API void PopColumnsBackground();
|
IMGUI_API void PopColumnsBackground();
|
||||||
IMGUI_API ImGuiID GetColumnsID(const char* str_id, int count);
|
IMGUI_API ImGuiID GetColumnsID(const char* str_id, int count);
|
||||||
IMGUI_API ImGuiColumns* FindOrCreateColumns(ImGuiWindow* window, ImGuiID id);
|
IMGUI_API ImGuiColumns* FindOrCreateColumns(ImGuiWindow* window, ImGuiID id);
|
||||||
|
IMGUI_API float GetColumnOffsetFromNorm(const ImGuiColumns* columns, float offset_norm);
|
||||||
|
IMGUI_API float GetColumnNormFromOffset(const ImGuiColumns* columns, float offset);
|
||||||
|
|
||||||
// Tab Bars
|
// Tab Bars
|
||||||
IMGUI_API bool BeginTabBarEx(ImGuiTabBar* tab_bar, const ImRect& bb, ImGuiTabBarFlags flags);
|
IMGUI_API bool BeginTabBarEx(ImGuiTabBar* tab_bar, const ImRect& bb, ImGuiTabBarFlags flags);
|
||||||
|
|||||||
@ -24,6 +24,7 @@ Index of this file:
|
|||||||
// [SECTION] Widgets: MenuItem, BeginMenu, EndMenu, etc.
|
// [SECTION] Widgets: MenuItem, BeginMenu, EndMenu, etc.
|
||||||
// [SECTION] Widgets: BeginTabBar, EndTabBar, etc.
|
// [SECTION] Widgets: BeginTabBar, EndTabBar, etc.
|
||||||
// [SECTION] Widgets: BeginTabItem, EndTabItem, etc.
|
// [SECTION] Widgets: BeginTabItem, EndTabItem, etc.
|
||||||
|
// [SECTION] Widgets: Columns, BeginColumns, EndColumns, etc.
|
||||||
|
|
||||||
*/
|
*/
|
||||||
|
|
||||||
@ -7088,3 +7089,409 @@ bool ImGui::TabItemLabelAndCloseButton(ImDrawList* draw_list, const ImRect& bb,
|
|||||||
|
|
||||||
return close_button_pressed;
|
return close_button_pressed;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
//-------------------------------------------------------------------------
|
||||||
|
// [SECTION] Widgets: Columns, BeginColumns, EndColumns, etc.
|
||||||
|
// In the current version, Columns are very weak. Needs to be replaced with a more full-featured system.
|
||||||
|
//-------------------------------------------------------------------------
|
||||||
|
// - GetColumnIndex()
|
||||||
|
// - GetColumnCount()
|
||||||
|
// - GetColumnOffset()
|
||||||
|
// - GetColumnWidth()
|
||||||
|
// - SetColumnOffset()
|
||||||
|
// - SetColumnWidth()
|
||||||
|
// - PushColumnClipRect() [Internal]
|
||||||
|
// - PushColumnsBackground() [Internal]
|
||||||
|
// - PopColumnsBackground() [Internal]
|
||||||
|
// - FindOrCreateColumns() [Internal]
|
||||||
|
// - GetColumnsID() [Internal]
|
||||||
|
// - BeginColumns()
|
||||||
|
// - NextColumn()
|
||||||
|
// - EndColumns()
|
||||||
|
// - Columns()
|
||||||
|
//-------------------------------------------------------------------------
|
||||||
|
|
||||||
|
int ImGui::GetColumnIndex()
|
||||||
|
{
|
||||||
|
ImGuiWindow* window = GetCurrentWindowRead();
|
||||||
|
return window->DC.CurrentColumns ? window->DC.CurrentColumns->Current : 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int ImGui::GetColumnsCount()
|
||||||
|
{
|
||||||
|
ImGuiWindow* window = GetCurrentWindowRead();
|
||||||
|
return window->DC.CurrentColumns ? window->DC.CurrentColumns->Count : 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
float ImGui::GetColumnOffsetFromNorm(const ImGuiColumns* columns, float offset_norm)
|
||||||
|
{
|
||||||
|
return offset_norm * (columns->OffMaxX - columns->OffMinX);
|
||||||
|
}
|
||||||
|
|
||||||
|
float ImGui::GetColumnNormFromOffset(const ImGuiColumns* columns, float offset)
|
||||||
|
{
|
||||||
|
return offset / (columns->OffMaxX - columns->OffMinX);
|
||||||
|
}
|
||||||
|
|
||||||
|
static const float COLUMNS_HIT_RECT_HALF_WIDTH = 4.0f;
|
||||||
|
|
||||||
|
static float GetDraggedColumnOffset(ImGuiColumns* columns, int column_index)
|
||||||
|
{
|
||||||
|
// Active (dragged) column always follow mouse. The reason we need this is that dragging a column to the right edge of an auto-resizing
|
||||||
|
// window creates a feedback loop because we store normalized positions. So while dragging we enforce absolute positioning.
|
||||||
|
ImGuiContext& g = *GImGui;
|
||||||
|
ImGuiWindow* window = g.CurrentWindow;
|
||||||
|
IM_ASSERT(column_index > 0); // We are not supposed to drag column 0.
|
||||||
|
IM_ASSERT(g.ActiveId == columns->ID + ImGuiID(column_index));
|
||||||
|
|
||||||
|
float x = g.IO.MousePos.x - g.ActiveIdClickOffset.x + COLUMNS_HIT_RECT_HALF_WIDTH - window->Pos.x;
|
||||||
|
x = ImMax(x, ImGui::GetColumnOffset(column_index - 1) + g.Style.ColumnsMinSpacing);
|
||||||
|
if ((columns->Flags & ImGuiColumnsFlags_NoPreserveWidths))
|
||||||
|
x = ImMin(x, ImGui::GetColumnOffset(column_index + 1) - g.Style.ColumnsMinSpacing);
|
||||||
|
|
||||||
|
return x;
|
||||||
|
}
|
||||||
|
|
||||||
|
float ImGui::GetColumnOffset(int column_index)
|
||||||
|
{
|
||||||
|
ImGuiWindow* window = GetCurrentWindowRead();
|
||||||
|
ImGuiColumns* columns = window->DC.CurrentColumns;
|
||||||
|
IM_ASSERT(columns != NULL);
|
||||||
|
|
||||||
|
if (column_index < 0)
|
||||||
|
column_index = columns->Current;
|
||||||
|
IM_ASSERT(column_index < columns->Columns.Size);
|
||||||
|
|
||||||
|
const float t = columns->Columns[column_index].OffsetNorm;
|
||||||
|
const float x_offset = ImLerp(columns->OffMinX, columns->OffMaxX, t);
|
||||||
|
return x_offset;
|
||||||
|
}
|
||||||
|
|
||||||
|
static float GetColumnWidthEx(ImGuiColumns* columns, int column_index, bool before_resize = false)
|
||||||
|
{
|
||||||
|
if (column_index < 0)
|
||||||
|
column_index = columns->Current;
|
||||||
|
|
||||||
|
float offset_norm;
|
||||||
|
if (before_resize)
|
||||||
|
offset_norm = columns->Columns[column_index + 1].OffsetNormBeforeResize - columns->Columns[column_index].OffsetNormBeforeResize;
|
||||||
|
else
|
||||||
|
offset_norm = columns->Columns[column_index + 1].OffsetNorm - columns->Columns[column_index].OffsetNorm;
|
||||||
|
return ImGui::GetColumnOffsetFromNorm(columns, offset_norm);
|
||||||
|
}
|
||||||
|
|
||||||
|
float ImGui::GetColumnWidth(int column_index)
|
||||||
|
{
|
||||||
|
ImGuiWindow* window = GetCurrentWindowRead();
|
||||||
|
ImGuiColumns* columns = window->DC.CurrentColumns;
|
||||||
|
IM_ASSERT(columns != NULL);
|
||||||
|
|
||||||
|
if (column_index < 0)
|
||||||
|
column_index = columns->Current;
|
||||||
|
return GetColumnOffsetFromNorm(columns, columns->Columns[column_index + 1].OffsetNorm - columns->Columns[column_index].OffsetNorm);
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui::SetColumnOffset(int column_index, float offset)
|
||||||
|
{
|
||||||
|
ImGuiContext& g = *GImGui;
|
||||||
|
ImGuiWindow* window = g.CurrentWindow;
|
||||||
|
ImGuiColumns* columns = window->DC.CurrentColumns;
|
||||||
|
IM_ASSERT(columns != NULL);
|
||||||
|
|
||||||
|
if (column_index < 0)
|
||||||
|
column_index = columns->Current;
|
||||||
|
IM_ASSERT(column_index < columns->Columns.Size);
|
||||||
|
|
||||||
|
const bool preserve_width = !(columns->Flags & ImGuiColumnsFlags_NoPreserveWidths) && (column_index < columns->Count-1);
|
||||||
|
const float width = preserve_width ? GetColumnWidthEx(columns, column_index, columns->IsBeingResized) : 0.0f;
|
||||||
|
|
||||||
|
if (!(columns->Flags & ImGuiColumnsFlags_NoForceWithinWindow))
|
||||||
|
offset = ImMin(offset, columns->OffMaxX - g.Style.ColumnsMinSpacing * (columns->Count - column_index));
|
||||||
|
columns->Columns[column_index].OffsetNorm = GetColumnNormFromOffset(columns, offset - columns->OffMinX);
|
||||||
|
|
||||||
|
if (preserve_width)
|
||||||
|
SetColumnOffset(column_index + 1, offset + ImMax(g.Style.ColumnsMinSpacing, width));
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui::SetColumnWidth(int column_index, float width)
|
||||||
|
{
|
||||||
|
ImGuiWindow* window = GetCurrentWindowRead();
|
||||||
|
ImGuiColumns* columns = window->DC.CurrentColumns;
|
||||||
|
IM_ASSERT(columns != NULL);
|
||||||
|
|
||||||
|
if (column_index < 0)
|
||||||
|
column_index = columns->Current;
|
||||||
|
SetColumnOffset(column_index + 1, GetColumnOffset(column_index) + width);
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui::PushColumnClipRect(int column_index)
|
||||||
|
{
|
||||||
|
ImGuiWindow* window = GetCurrentWindowRead();
|
||||||
|
ImGuiColumns* columns = window->DC.CurrentColumns;
|
||||||
|
if (column_index < 0)
|
||||||
|
column_index = columns->Current;
|
||||||
|
|
||||||
|
ImGuiColumnData* column = &columns->Columns[column_index];
|
||||||
|
PushClipRect(column->ClipRect.Min, column->ClipRect.Max, false);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Get into the columns background draw command (which is generally the same draw command as before we called BeginColumns)
|
||||||
|
void ImGui::PushColumnsBackground()
|
||||||
|
{
|
||||||
|
ImGuiWindow* window = GetCurrentWindowRead();
|
||||||
|
ImGuiColumns* columns = window->DC.CurrentColumns;
|
||||||
|
window->DrawList->ChannelsSetCurrent(0);
|
||||||
|
int cmd_size = window->DrawList->CmdBuffer.Size;
|
||||||
|
PushClipRect(columns->HostClipRect.Min, columns->HostClipRect.Max, false);
|
||||||
|
IM_UNUSED(cmd_size);
|
||||||
|
IM_ASSERT(cmd_size == window->DrawList->CmdBuffer.Size); // Being in channel 0 this should not have created an ImDrawCmd
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui::PopColumnsBackground()
|
||||||
|
{
|
||||||
|
ImGuiWindow* window = GetCurrentWindowRead();
|
||||||
|
ImGuiColumns* columns = window->DC.CurrentColumns;
|
||||||
|
window->DrawList->ChannelsSetCurrent(columns->Current + 1);
|
||||||
|
PopClipRect();
|
||||||
|
}
|
||||||
|
|
||||||
|
ImGuiColumns* ImGui::FindOrCreateColumns(ImGuiWindow* window, ImGuiID id)
|
||||||
|
{
|
||||||
|
// We have few columns per window so for now we don't need bother much with turning this into a faster lookup.
|
||||||
|
for (int n = 0; n < window->ColumnsStorage.Size; n++)
|
||||||
|
if (window->ColumnsStorage[n].ID == id)
|
||||||
|
return &window->ColumnsStorage[n];
|
||||||
|
|
||||||
|
window->ColumnsStorage.push_back(ImGuiColumns());
|
||||||
|
ImGuiColumns* columns = &window->ColumnsStorage.back();
|
||||||
|
columns->ID = id;
|
||||||
|
return columns;
|
||||||
|
}
|
||||||
|
|
||||||
|
ImGuiID ImGui::GetColumnsID(const char* str_id, int columns_count)
|
||||||
|
{
|
||||||
|
ImGuiWindow* window = GetCurrentWindow();
|
||||||
|
|
||||||
|
// Differentiate column ID with an arbitrary prefix for cases where users name their columns set the same as another widget.
|
||||||
|
// In addition, when an identifier isn't explicitly provided we include the number of columns in the hash to make it uniquer.
|
||||||
|
PushID(0x11223347 + (str_id ? 0 : columns_count));
|
||||||
|
ImGuiID id = window->GetID(str_id ? str_id : "columns");
|
||||||
|
PopID();
|
||||||
|
|
||||||
|
return id;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui::BeginColumns(const char* str_id, int columns_count, ImGuiColumnsFlags flags)
|
||||||
|
{
|
||||||
|
ImGuiContext& g = *GImGui;
|
||||||
|
ImGuiWindow* window = GetCurrentWindow();
|
||||||
|
|
||||||
|
IM_ASSERT(columns_count >= 1);
|
||||||
|
IM_ASSERT(window->DC.CurrentColumns == NULL); // Nested columns are currently not supported
|
||||||
|
|
||||||
|
// Acquire storage for the columns set
|
||||||
|
ImGuiID id = GetColumnsID(str_id, columns_count);
|
||||||
|
ImGuiColumns* columns = FindOrCreateColumns(window, id);
|
||||||
|
IM_ASSERT(columns->ID == id);
|
||||||
|
columns->Current = 0;
|
||||||
|
columns->Count = columns_count;
|
||||||
|
columns->Flags = flags;
|
||||||
|
window->DC.CurrentColumns = columns;
|
||||||
|
|
||||||
|
// Set state for first column
|
||||||
|
columns->OffMinX = window->DC.Indent.x - g.Style.ItemSpacing.x;
|
||||||
|
columns->OffMaxX = ImMax(window->WorkRect.Max.x - window->Pos.x, columns->OffMinX + 1.0f);
|
||||||
|
columns->HostCursorPosY = window->DC.CursorPos.y;
|
||||||
|
columns->HostCursorMaxPosX = window->DC.CursorMaxPos.x;
|
||||||
|
columns->HostClipRect = window->ClipRect;
|
||||||
|
columns->HostWorkRect = window->WorkRect;
|
||||||
|
columns->LineMinY = columns->LineMaxY = window->DC.CursorPos.y;
|
||||||
|
window->DC.ColumnsOffset.x = 0.0f;
|
||||||
|
window->DC.CursorPos.x = (float)(int)(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);
|
||||||
|
|
||||||
|
// Clear data if columns count changed
|
||||||
|
if (columns->Columns.Size != 0 && columns->Columns.Size != columns_count + 1)
|
||||||
|
columns->Columns.resize(0);
|
||||||
|
|
||||||
|
// Initialize default widths
|
||||||
|
columns->IsFirstFrame = (columns->Columns.Size == 0);
|
||||||
|
if (columns->Columns.Size == 0)
|
||||||
|
{
|
||||||
|
columns->Columns.reserve(columns_count + 1);
|
||||||
|
for (int n = 0; n < columns_count + 1; n++)
|
||||||
|
{
|
||||||
|
ImGuiColumnData column;
|
||||||
|
column.OffsetNorm = n / (float)columns_count;
|
||||||
|
columns->Columns.push_back(column);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
for (int n = 0; n < columns_count; n++)
|
||||||
|
{
|
||||||
|
// Compute clipping rectangle
|
||||||
|
ImGuiColumnData* column = &columns->Columns[n];
|
||||||
|
float clip_x1 = ImFloor(0.5f + window->Pos.x + GetColumnOffset(n));
|
||||||
|
float clip_x2 = ImFloor(0.5f + window->Pos.x + GetColumnOffset(n + 1) - 1.0f);
|
||||||
|
column->ClipRect = ImRect(clip_x1, -FLT_MAX, clip_x2, +FLT_MAX);
|
||||||
|
column->ClipRect.ClipWith(window->ClipRect);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (columns->Count > 1)
|
||||||
|
{
|
||||||
|
window->DrawList->ChannelsSplit(1 + columns->Count);
|
||||||
|
window->DrawList->ChannelsSetCurrent(1);
|
||||||
|
PushColumnClipRect(0);
|
||||||
|
}
|
||||||
|
|
||||||
|
float offset_0 = GetColumnOffset(columns->Current);
|
||||||
|
float offset_1 = GetColumnOffset(columns->Current + 1);
|
||||||
|
float width = offset_1 - offset_0;
|
||||||
|
PushItemWidth(width * 0.65f);
|
||||||
|
window->WorkRect.Max.x = window->Pos.x + offset_1 - window->WindowPadding.x;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui::NextColumn()
|
||||||
|
{
|
||||||
|
ImGuiWindow* window = GetCurrentWindow();
|
||||||
|
if (window->SkipItems || window->DC.CurrentColumns == NULL)
|
||||||
|
return;
|
||||||
|
|
||||||
|
ImGuiContext& g = *GImGui;
|
||||||
|
ImGuiColumns* columns = window->DC.CurrentColumns;
|
||||||
|
|
||||||
|
if (columns->Count == 1)
|
||||||
|
{
|
||||||
|
window->DC.CursorPos.x = (float)(int)(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);
|
||||||
|
IM_ASSERT(columns->Current == 0);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
PopItemWidth();
|
||||||
|
PopClipRect();
|
||||||
|
|
||||||
|
columns->LineMaxY = ImMax(columns->LineMaxY, window->DC.CursorPos.y);
|
||||||
|
if (++columns->Current < columns->Count)
|
||||||
|
{
|
||||||
|
// Columns 1+ cancel out IndentX
|
||||||
|
// FIXME-COLUMNS: Unnecessary, could be locked?
|
||||||
|
window->DC.ColumnsOffset.x = GetColumnOffset(columns->Current) - window->DC.Indent.x + g.Style.ItemSpacing.x;
|
||||||
|
window->DrawList->ChannelsSetCurrent(columns->Current + 1);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// New row/line
|
||||||
|
window->DC.ColumnsOffset.x = 0.0f;
|
||||||
|
window->DrawList->ChannelsSetCurrent(1);
|
||||||
|
columns->Current = 0;
|
||||||
|
columns->LineMinY = columns->LineMaxY;
|
||||||
|
}
|
||||||
|
window->DC.CursorPos.x = (float)(int)(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);
|
||||||
|
window->DC.CursorPos.y = columns->LineMinY;
|
||||||
|
window->DC.CurrLineSize = ImVec2(0.0f, 0.0f);
|
||||||
|
window->DC.CurrLineTextBaseOffset = 0.0f;
|
||||||
|
|
||||||
|
PushColumnClipRect(columns->Current); // FIXME-COLUMNS: Could it be an overwrite?
|
||||||
|
|
||||||
|
// FIXME-COLUMNS: Share code with BeginColumns() - move code on columns setup.
|
||||||
|
float offset_0 = GetColumnOffset(columns->Current);
|
||||||
|
float offset_1 = GetColumnOffset(columns->Current + 1);
|
||||||
|
float width = offset_1 - offset_0;
|
||||||
|
PushItemWidth(width * 0.65f);
|
||||||
|
window->WorkRect.Max.x = window->Pos.x + offset_1 - window->WindowPadding.x;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui::EndColumns()
|
||||||
|
{
|
||||||
|
ImGuiContext& g = *GImGui;
|
||||||
|
ImGuiWindow* window = GetCurrentWindow();
|
||||||
|
ImGuiColumns* columns = window->DC.CurrentColumns;
|
||||||
|
IM_ASSERT(columns != NULL);
|
||||||
|
|
||||||
|
PopItemWidth();
|
||||||
|
if (columns->Count > 1)
|
||||||
|
{
|
||||||
|
PopClipRect();
|
||||||
|
window->DrawList->ChannelsMerge();
|
||||||
|
}
|
||||||
|
|
||||||
|
const ImGuiColumnsFlags flags = columns->Flags;
|
||||||
|
columns->LineMaxY = ImMax(columns->LineMaxY, window->DC.CursorPos.y);
|
||||||
|
window->DC.CursorPos.y = columns->LineMaxY;
|
||||||
|
if (!(flags & ImGuiColumnsFlags_GrowParentContentsSize))
|
||||||
|
window->DC.CursorMaxPos.x = columns->HostCursorMaxPosX; // Restore cursor max pos, as columns don't grow parent
|
||||||
|
|
||||||
|
// Draw columns borders and handle resize
|
||||||
|
// The IsBeingResized flag ensure we preserve pre-resize columns width so back-and-forth are not lossy
|
||||||
|
bool is_being_resized = false;
|
||||||
|
if (!(flags & ImGuiColumnsFlags_NoBorder) && !window->SkipItems)
|
||||||
|
{
|
||||||
|
// We clip Y boundaries CPU side because very long triangles are mishandled by some GPU drivers.
|
||||||
|
const float y1 = ImMax(columns->HostCursorPosY, window->ClipRect.Min.y);
|
||||||
|
const float y2 = ImMin(window->DC.CursorPos.y, window->ClipRect.Max.y);
|
||||||
|
int dragging_column = -1;
|
||||||
|
for (int n = 1; n < columns->Count; n++)
|
||||||
|
{
|
||||||
|
ImGuiColumnData* column = &columns->Columns[n];
|
||||||
|
float x = window->Pos.x + GetColumnOffset(n);
|
||||||
|
const ImGuiID column_id = columns->ID + ImGuiID(n);
|
||||||
|
const float column_hit_hw = COLUMNS_HIT_RECT_HALF_WIDTH;
|
||||||
|
const ImRect column_hit_rect(ImVec2(x - column_hit_hw, y1), ImVec2(x + column_hit_hw, y2));
|
||||||
|
KeepAliveID(column_id);
|
||||||
|
if (IsClippedEx(column_hit_rect, column_id, false))
|
||||||
|
continue;
|
||||||
|
|
||||||
|
bool hovered = false, held = false;
|
||||||
|
if (!(flags & ImGuiColumnsFlags_NoResize))
|
||||||
|
{
|
||||||
|
ButtonBehavior(column_hit_rect, column_id, &hovered, &held);
|
||||||
|
if (hovered || held)
|
||||||
|
g.MouseCursor = ImGuiMouseCursor_ResizeEW;
|
||||||
|
if (held && !(column->Flags & ImGuiColumnsFlags_NoResize))
|
||||||
|
dragging_column = n;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Draw column
|
||||||
|
const ImU32 col = GetColorU32(held ? ImGuiCol_SeparatorActive : hovered ? ImGuiCol_SeparatorHovered : ImGuiCol_Separator);
|
||||||
|
const float xi = (float)(int)x;
|
||||||
|
window->DrawList->AddLine(ImVec2(xi, y1 + 1.0f), ImVec2(xi, y2), col);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Apply dragging after drawing the column lines, so our rendered lines are in sync with how items were displayed during the frame.
|
||||||
|
if (dragging_column != -1)
|
||||||
|
{
|
||||||
|
if (!columns->IsBeingResized)
|
||||||
|
for (int n = 0; n < columns->Count + 1; n++)
|
||||||
|
columns->Columns[n].OffsetNormBeforeResize = columns->Columns[n].OffsetNorm;
|
||||||
|
columns->IsBeingResized = is_being_resized = true;
|
||||||
|
float x = GetDraggedColumnOffset(columns, dragging_column);
|
||||||
|
SetColumnOffset(dragging_column, x);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
columns->IsBeingResized = is_being_resized;
|
||||||
|
|
||||||
|
window->WorkRect = columns->HostWorkRect;
|
||||||
|
window->DC.CurrentColumns = NULL;
|
||||||
|
window->DC.ColumnsOffset.x = 0.0f;
|
||||||
|
window->DC.CursorPos.x = (float)(int)(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);
|
||||||
|
}
|
||||||
|
|
||||||
|
// [2018-03: This is currently the only public API, while we are working on making BeginColumns/EndColumns user-facing]
|
||||||
|
void ImGui::Columns(int columns_count, const char* id, bool border)
|
||||||
|
{
|
||||||
|
ImGuiWindow* window = GetCurrentWindow();
|
||||||
|
IM_ASSERT(columns_count >= 1);
|
||||||
|
|
||||||
|
ImGuiColumnsFlags flags = (border ? 0 : ImGuiColumnsFlags_NoBorder);
|
||||||
|
//flags |= ImGuiColumnsFlags_NoPreserveWidths; // NB: Legacy behavior
|
||||||
|
ImGuiColumns* columns = window->DC.CurrentColumns;
|
||||||
|
if (columns != NULL && columns->Count == columns_count && columns->Flags == flags)
|
||||||
|
return;
|
||||||
|
|
||||||
|
if (columns != NULL)
|
||||||
|
EndColumns();
|
||||||
|
|
||||||
|
if (columns_count != 1)
|
||||||
|
BeginColumns(id, columns_count, flags);
|
||||||
|
}
|
||||||
|
|
||||||
|
//-------------------------------------------------------------------------
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user