mirror of
https://github.com/Drezil/imgui.git
synced 2025-07-04 12:08:47 +02:00
Began improvements to columns API by splitting the Columns() function into BeginColumns() and EndColumns() and adding additional flags. The columns data still needs to be placed into a stack.
This commit is contained in:
Geoffrey Tucker
202
imgui.cpp
202
imgui.cpp
@ -3507,7 +3507,7 @@ static bool BeginPopupEx(const char* str_id, ImGuiWindowFlags extra_flags)
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bool ImGui::BeginPopup(const char* str_id)
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{
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if (GImGui->OpenPopupStack.Size <= GImGui->CurrentPopupStack.Size) // Early out for performance
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if (GImGui->OpenPopupStack.Size <= GImGui->CurrentPopupStack.Size) // Early out for performance
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{
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ClearSetNextWindowData(); // We behave like Begin() and need to consume those values
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return false;
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@ -9175,7 +9175,7 @@ void ImGui::EndGroup()
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = GetCurrentWindow();
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IM_ASSERT(!window->DC.GroupStack.empty()); // Mismatched BeginGroup()/EndGroup() calls
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IM_ASSERT(!window->DC.GroupStack.empty()); // Mismatched BeginGroup()/EndGroup() calls
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ImGuiGroupData& group_data = window->DC.GroupStack.back();
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@ -9295,6 +9295,18 @@ int ImGui::GetColumnsCount()
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return window->DC.ColumnsCount;
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}
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static float OffsetNormToPixels(float offsetNorm)
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{
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ImGuiWindow* window = ImGui::GetCurrentWindowRead();
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return offsetNorm * (window->DC.ColumnsMaxX - window->DC.ColumnsMinX);
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}
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static float PixelsToOffsetNorm(float offset)
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{
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ImGuiWindow* window = ImGui::GetCurrentWindowRead();
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return (offset - window->DC.ColumnsMinX) / (window->DC.ColumnsMaxX - window->DC.ColumnsMinX);
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}
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static float GetDraggedColumnOffset(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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@ -9305,7 +9317,9 @@ static float GetDraggedColumnOffset(int column_index)
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IM_ASSERT(g.ActiveId == window->DC.ColumnsSetId + ImGuiID(column_index));
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float x = g.IO.MousePos.x - g.ActiveIdClickOffset.x - window->Pos.x;
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x = ImClamp(x, ImGui::GetColumnOffset(column_index-1)+g.Style.ColumnsMinSpacing, ImGui::GetColumnOffset(column_index+1)-g.Style.ColumnsMinSpacing);
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x = ImMax(x, ImGui::GetColumnOffset(column_index-1) + g.Style.ColumnsMinSpacing);
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if ((window->DC.ColumnsFlags & ImGuiColumnsFlags_NoPreserveWidths))
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x = ImMin(x, ImGui::GetColumnOffset(column_index+1) - g.Style.ColumnsMinSpacing);
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return (float)(int)x;
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}
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@ -9332,16 +9346,26 @@ float ImGui::GetColumnOffset(int column_index)
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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 = GetCurrentWindow();
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if (column_index < 0)
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column_index = window->DC.ColumnsCurrent;
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IM_ASSERT(column_index < window->DC.ColumnsData.Size);
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const float t = (offset - window->DC.ColumnsMinX) / (window->DC.ColumnsMaxX - window->DC.ColumnsMinX);
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window->DC.ColumnsData[column_index].OffsetNorm = t;
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const bool preserveWidth = !(window->DC.ColumnsFlags & ImGuiColumnsFlags_NoPreserveWidths) && (column_index < window->DC.ColumnsCount-1);
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const float width = preserveWidth ? GetColumnWidth(column_index) : 0.0f;
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if (!(window->DC.ColumnsFlags & ImGuiColumnsFlags_NoForceWithinWindow))
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offset = ImMin((float)(int)offset, window->DC.ColumnsMaxX - g.Style.ColumnsMinSpacing * (window->DC.ColumnsCount - column_index));
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const float offsetNorm = PixelsToOffsetNorm(offset);
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const ImGuiID column_id = window->DC.ColumnsSetId + ImGuiID(column_index);
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window->DC.StateStorage->SetFloat(column_id, t);
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window->DC.StateStorage->SetFloat(column_id, offsetNorm);
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window->DC.ColumnsData[column_index].OffsetNorm = offsetNorm;
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if (preserveWidth)
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SetColumnOffset(column_index+1, offset + ImMax(g.Style.ColumnsMinSpacing, width));
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}
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float ImGui::GetColumnWidth(int column_index)
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@ -9350,8 +9374,16 @@ float ImGui::GetColumnWidth(int column_index)
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if (column_index < 0)
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column_index = window->DC.ColumnsCurrent;
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float w = GetColumnOffset(column_index+1) - GetColumnOffset(column_index);
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return w;
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return OffsetNormToPixels(window->DC.ColumnsData[column_index+1].OffsetNorm - window->DC.ColumnsData[column_index].OffsetNorm);
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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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if (column_index < 0)
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column_index = window->DC.ColumnsCurrent;
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SetColumnOffset(column_index+1, GetColumnOffset(column_index) + width);
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}
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static void PushColumnClipRect(int column_index)
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@ -9365,56 +9397,12 @@ static void PushColumnClipRect(int column_index)
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ImGui::PushClipRect(ImVec2(x1,-FLT_MAX), ImVec2(x2,+FLT_MAX), true);
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}
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void ImGui::Columns(int columns_count, const char* id, bool border)
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void ImGui::BeginColumns(const char* 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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if (window->DC.ColumnsCount != 1)
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{
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if (window->DC.ColumnsCurrent != 0)
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ItemSize(ImVec2(0,0)); // Advance to column 0
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PopItemWidth();
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PopClipRect();
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window->DrawList->ChannelsMerge();
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window->DC.ColumnsCellMaxY = ImMax(window->DC.ColumnsCellMaxY, window->DC.CursorPos.y);
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window->DC.CursorPos.y = window->DC.ColumnsCellMaxY;
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}
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// Draw columns borders and handle resize at the time of "closing" a columns set
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if (window->DC.ColumnsCount != columns_count && window->DC.ColumnsCount != 1 && window->DC.ColumnsShowBorders && !window->SkipItems)
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{
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const float y1 = window->DC.ColumnsStartPosY;
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const float y2 = window->DC.CursorPos.y;
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for (int i = 1; i < window->DC.ColumnsCount; i++)
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{
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float x = window->Pos.x + GetColumnOffset(i);
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const ImGuiID column_id = window->DC.ColumnsSetId + ImGuiID(i);
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const ImRect column_rect(ImVec2(x-4,y1),ImVec2(x+4,y2));
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if (IsClippedEx(column_rect, &column_id, false))
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continue;
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bool hovered, held;
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ButtonBehavior(column_rect, column_id, &hovered, &held);
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if (hovered || held)
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g.MouseCursor = ImGuiMouseCursor_ResizeEW;
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// Draw before resize so our items positioning are in sync with the line being drawn
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const ImU32 col = GetColorU32(held ? ImGuiCol_ColumnActive : hovered ? ImGuiCol_ColumnHovered : ImGuiCol_Column);
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const float xi = (float)(int)x;
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window->DrawList->AddLine(ImVec2(xi, y1+1.0f), ImVec2(xi, y2), col);
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if (held)
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{
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if (g.ActiveIdIsJustActivated)
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g.ActiveIdClickOffset.x -= 4; // Store from center of column line (we used a 8 wide rect for columns clicking)
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x = GetDraggedColumnOffset(i);
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SetColumnOffset(i, x);
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}
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}
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}
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IM_ASSERT(columns_count > 1);
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IM_ASSERT(window->DC.ColumnsCount == 1); // Nested columns are currently not supported
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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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@ -9425,7 +9413,7 @@ void ImGui::Columns(int columns_count, const char* id, bool border)
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// Set state for first column
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window->DC.ColumnsCurrent = 0;
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window->DC.ColumnsCount = columns_count;
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window->DC.ColumnsShowBorders = border;
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window->DC.ColumnsFlags = flags;
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const float content_region_width = (window->SizeContentsExplicit.x != 0.0f) ? window->SizeContentsExplicit.x : window->Size.x;
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window->DC.ColumnsMinX = window->DC.IndentX; // Lock our horizontal range
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@ -9435,26 +9423,92 @@ void ImGui::Columns(int columns_count, const char* id, bool border)
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window->DC.ColumnsOffsetX = 0.0f;
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window->DC.CursorPos.x = (float)(int)(window->Pos.x + window->DC.IndentX + window->DC.ColumnsOffsetX);
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if (window->DC.ColumnsCount != 1)
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// Cache column offsets
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window->DC.ColumnsData.resize(columns_count + 1);
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for (int column_index = 0; column_index < columns_count + 1; column_index++)
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{
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// Cache column offsets
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window->DC.ColumnsData.resize(columns_count + 1);
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for (int column_index = 0; column_index < columns_count + 1; column_index++)
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{
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const ImGuiID column_id = window->DC.ColumnsSetId + ImGuiID(column_index);
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KeepAliveID(column_id);
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const float default_t = column_index / (float)window->DC.ColumnsCount;
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const float t = window->DC.StateStorage->GetFloat(column_id, default_t); // Cheaply store our floating point value inside the integer (could store a union into the map?)
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window->DC.ColumnsData[column_index].OffsetNorm = t;
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}
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window->DrawList->ChannelsSplit(window->DC.ColumnsCount);
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PushColumnClipRect();
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PushItemWidth(GetColumnWidth() * 0.65f);
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}
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else
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{
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window->DC.ColumnsData.resize(0);
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const ImGuiID column_id = window->DC.ColumnsSetId + ImGuiID(column_index);
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KeepAliveID(column_id);
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const float default_t = column_index / (float)window->DC.ColumnsCount;
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float t = window->DC.StateStorage->GetFloat(column_id, default_t); // Cheaply store our floating point value inside the integer (could store a union into the map?)
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if (!(window->DC.ColumnsFlags & ImGuiColumnsFlags_NoForceWithinWindow))
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t = ImMin(t, PixelsToOffsetNorm(window->DC.ColumnsMaxX - g.Style.ColumnsMinSpacing * (window->DC.ColumnsCount - column_index)));
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window->DC.ColumnsData[column_index].OffsetNorm = t;
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}
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window->DrawList->ChannelsSplit(window->DC.ColumnsCount);
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PushColumnClipRect();
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PushItemWidth(GetColumnWidth() * 0.65f);
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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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IM_ASSERT(window->DC.ColumnsCount > 1);
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if (window->DC.ColumnsCurrent != 0)
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ItemSize(ImVec2(0, 0)); // Advance to column 0
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PopItemWidth();
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PopClipRect();
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window->DrawList->ChannelsMerge();
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window->DC.ColumnsCellMaxY = ImMax(window->DC.ColumnsCellMaxY, window->DC.CursorPos.y);
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window->DC.CursorPos.y = window->DC.ColumnsCellMaxY;
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// Draw columns borders and handle resize
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if (!(window->DC.ColumnsFlags & ImGuiColumnsFlags_NoBorder) && !window->SkipItems)
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{
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const float y1 = window->DC.ColumnsStartPosY;
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const float y2 = window->DC.CursorPos.y;
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for (int i = 1; i < window->DC.ColumnsCount; i++)
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{
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float x = window->Pos.x + GetColumnOffset(i);
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const ImGuiID column_id = window->DC.ColumnsSetId + ImGuiID(i);
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const ImRect column_rect(ImVec2(x - 4, y1), ImVec2(x + 4, y2));
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if (IsClippedEx(column_rect, &column_id, false))
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continue;
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bool hovered, held;
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ButtonBehavior(column_rect, column_id, &hovered, &held);
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if (hovered || held)
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g.MouseCursor = ImGuiMouseCursor_ResizeEW;
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// Draw before resize so our items positioning are in sync with the line being drawn
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const ImU32 col = GetColorU32(held ? ImGuiCol_ColumnActive : hovered ? ImGuiCol_ColumnHovered : ImGuiCol_Column);
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const float xi = (float)(int)x;
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window->DrawList->AddLine(ImVec2(xi, y1 + 1.0f), ImVec2(xi, y2), col);
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if (held)
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{
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if (g.ActiveIdIsJustActivated)
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g.ActiveIdClickOffset.x -= 4; // Store from center of column line (we used a 8 wide rect for columns clicking)
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x = GetDraggedColumnOffset(i);
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SetColumnOffset(i, x);
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}
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}
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}
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window->DC.ColumnsSetId = 0;
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window->DC.ColumnsCurrent = 0;
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window->DC.ColumnsCount = 1;
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window->DC.ColumnsFlags = 0;
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window->DC.ColumnsData.resize(0);
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}
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void ImGui::Columns(int columns_count, const char* id, bool border)
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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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ImGuiColumnsFlags flags = 0;
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flags |= (border ? 0 : ImGuiColumnsFlags_NoBorder);
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if (window->DC.ColumnsCount != columns_count && window->DC.ColumnsCount != 1)
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EndColumns();
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if (columns_count != 1)
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BeginColumns(id, columns_count, flags);
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}
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void ImGui::Indent(float indent_w)
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