mirror of
https://github.com/Drezil/imgui.git
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Refactor: moving ItemAdd() into a section abote ItemSize(). No logic change (part 2)
Diff not ideal (in Fork it looks like ItemSize is moved) but understandable at a glance.
This commit is contained in:
ocornut
159
imgui.cpp
159
imgui.cpp
@@ -9735,97 +9735,10 @@ void ImGui::KeepAliveID(ImGuiID id)
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g.ActiveIdPreviousFrameIsAlive = true;
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}
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/*
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// Declare item bounding box for clipping and interaction.
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// Note that the size can be different than the one provided to ItemSize(). Typically, widgets that spread over available surface
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// declare their minimum size requirement to ItemSize() and provide a larger region to ItemAdd() which is used drawing/interaction.
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// THIS IS IN THE PERFORMANCE CRITICAL PATH (UNTIL THE CLIPPING TEST AND EARLY-RETURN)
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bool ImGui::ItemAdd(const ImRect& bb, ImGuiID id, const ImRect* nav_bb_arg, ImGuiItemFlags extra_flags)
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{
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = g.CurrentWindow;
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...
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return true;
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}
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*/
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//-----------------------------------------------------------------------------
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// [SECTION] LAYOUT
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//-----------------------------------------------------------------------------
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// - ItemSize()
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// - SameLine()
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// - GetCursorScreenPos()
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// - SetCursorScreenPos()
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// - GetCursorPos(), GetCursorPosX(), GetCursorPosY()
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// - SetCursorPos(), SetCursorPosX(), SetCursorPosY()
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// - GetCursorStartPos()
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// - Indent()
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// - Unindent()
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// - SetNextItemWidth()
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// - PushItemWidth()
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// - PushMultiItemsWidths()
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// - PopItemWidth()
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// - CalcItemWidth()
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// - CalcItemSize()
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// - GetTextLineHeight()
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// - GetTextLineHeightWithSpacing()
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// - GetFrameHeight()
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// - GetFrameHeightWithSpacing()
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// - GetContentRegionMax()
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// - GetContentRegionMaxAbs() [Internal]
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// - GetContentRegionAvail(),
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// - GetWindowContentRegionMin(), GetWindowContentRegionMax()
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// - BeginGroup()
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// - EndGroup()
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// Also see in imgui_widgets: tab bars, and in imgui_tables: tables, columns.
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//-----------------------------------------------------------------------------
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// Advance cursor given item size for layout.
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// Register minimum needed size so it can extend the bounding box used for auto-fit calculation.
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// See comments in ItemAdd() about how/why the size provided to ItemSize() vs ItemAdd() may often different.
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// THIS IS IN THE PERFORMANCE CRITICAL PATH.
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void ImGui::ItemSize(const ImVec2& size, float text_baseline_y)
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{
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = g.CurrentWindow;
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if (window->SkipItems)
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return;
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// We increase the height in this function to accommodate for baseline offset.
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// In theory we should be offsetting the starting position (window->DC.CursorPos), that will be the topic of a larger refactor,
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// but since ItemSize() is not yet an API that moves the cursor (to handle e.g. wrapping) enlarging the height has the same effect.
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const float offset_to_match_baseline_y = (text_baseline_y >= 0) ? ImMax(0.0f, window->DC.CurrLineTextBaseOffset - text_baseline_y) : 0.0f;
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const float line_y1 = window->DC.IsSameLine ? window->DC.CursorPosPrevLine.y : window->DC.CursorPos.y;
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const float line_height = ImMax(window->DC.CurrLineSize.y, /*ImMax(*/window->DC.CursorPos.y - line_y1/*, 0.0f)*/ + size.y + offset_to_match_baseline_y);
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// Always align ourselves on pixel boundaries
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//if (g.IO.KeyAlt) window->DrawList->AddRect(window->DC.CursorPos, window->DC.CursorPos + ImVec2(size.x, line_height), IM_COL32(255,0,0,200)); // [DEBUG]
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window->DC.CursorPosPrevLine.x = window->DC.CursorPos.x + size.x;
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window->DC.CursorPosPrevLine.y = line_y1;
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window->DC.CursorPos.x = IM_TRUNC(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x); // Next line
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window->DC.CursorPos.y = IM_TRUNC(line_y1 + line_height + g.Style.ItemSpacing.y); // Next line
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window->DC.CursorMaxPos.x = ImMax(window->DC.CursorMaxPos.x, window->DC.CursorPosPrevLine.x);
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window->DC.CursorMaxPos.y = ImMax(window->DC.CursorMaxPos.y, window->DC.CursorPos.y - g.Style.ItemSpacing.y);
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//if (g.IO.KeyAlt) window->DrawList->AddCircle(window->DC.CursorMaxPos, 3.0f, IM_COL32(255,0,0,255), 4); // [DEBUG]
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window->DC.PrevLineSize.y = line_height;
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window->DC.CurrLineSize.y = 0.0f;
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window->DC.PrevLineTextBaseOffset = ImMax(window->DC.CurrLineTextBaseOffset, text_baseline_y);
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window->DC.CurrLineTextBaseOffset = 0.0f;
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window->DC.IsSameLine = window->DC.IsSetPos = false;
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// Horizontal layout mode
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if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
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SameLine();
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}
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bool ImGui::ItemAdd(const ImRect& bb, ImGuiID id, const ImRect* nav_bb_arg, ImGuiItemFlags extra_flags)
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{
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ImGuiContext& g = *GImGui;
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@@ -9910,6 +9823,78 @@ bool ImGui::ItemAdd(const ImRect& bb, ImGuiID id, const ImRect* nav_bb_arg, ImGu
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return true;
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}
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//-----------------------------------------------------------------------------
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// [SECTION] LAYOUT
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//-----------------------------------------------------------------------------
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// - ItemSize()
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// - SameLine()
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// - GetCursorScreenPos()
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// - SetCursorScreenPos()
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// - GetCursorPos(), GetCursorPosX(), GetCursorPosY()
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// - SetCursorPos(), SetCursorPosX(), SetCursorPosY()
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// - GetCursorStartPos()
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// - Indent()
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// - Unindent()
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// - SetNextItemWidth()
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// - PushItemWidth()
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// - PushMultiItemsWidths()
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// - PopItemWidth()
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// - CalcItemWidth()
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// - CalcItemSize()
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// - GetTextLineHeight()
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// - GetTextLineHeightWithSpacing()
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// - GetFrameHeight()
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// - GetFrameHeightWithSpacing()
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// - GetContentRegionMax()
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// - GetContentRegionMaxAbs() [Internal]
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// - GetContentRegionAvail(),
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// - GetWindowContentRegionMin(), GetWindowContentRegionMax()
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// - BeginGroup()
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// - EndGroup()
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// Also see in imgui_widgets: tab bars, and in imgui_tables: tables, columns.
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//-----------------------------------------------------------------------------
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// Advance cursor given item size for layout.
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// Register minimum needed size so it can extend the bounding box used for auto-fit calculation.
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// See comments in ItemAdd() about how/why the size provided to ItemSize() vs ItemAdd() may often different.
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// THIS IS IN THE PERFORMANCE CRITICAL PATH.
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void ImGui::ItemSize(const ImVec2& size, float text_baseline_y)
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{
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = g.CurrentWindow;
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if (window->SkipItems)
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return;
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// We increase the height in this function to accommodate for baseline offset.
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// In theory we should be offsetting the starting position (window->DC.CursorPos), that will be the topic of a larger refactor,
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// but since ItemSize() is not yet an API that moves the cursor (to handle e.g. wrapping) enlarging the height has the same effect.
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const float offset_to_match_baseline_y = (text_baseline_y >= 0) ? ImMax(0.0f, window->DC.CurrLineTextBaseOffset - text_baseline_y) : 0.0f;
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const float line_y1 = window->DC.IsSameLine ? window->DC.CursorPosPrevLine.y : window->DC.CursorPos.y;
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const float line_height = ImMax(window->DC.CurrLineSize.y, /*ImMax(*/window->DC.CursorPos.y - line_y1/*, 0.0f)*/ + size.y + offset_to_match_baseline_y);
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// Always align ourselves on pixel boundaries
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//if (g.IO.KeyAlt) window->DrawList->AddRect(window->DC.CursorPos, window->DC.CursorPos + ImVec2(size.x, line_height), IM_COL32(255,0,0,200)); // [DEBUG]
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window->DC.CursorPosPrevLine.x = window->DC.CursorPos.x + size.x;
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window->DC.CursorPosPrevLine.y = line_y1;
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window->DC.CursorPos.x = IM_TRUNC(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x); // Next line
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window->DC.CursorPos.y = IM_TRUNC(line_y1 + line_height + g.Style.ItemSpacing.y); // Next line
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window->DC.CursorMaxPos.x = ImMax(window->DC.CursorMaxPos.x, window->DC.CursorPosPrevLine.x);
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window->DC.CursorMaxPos.y = ImMax(window->DC.CursorMaxPos.y, window->DC.CursorPos.y - g.Style.ItemSpacing.y);
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//if (g.IO.KeyAlt) window->DrawList->AddCircle(window->DC.CursorMaxPos, 3.0f, IM_COL32(255,0,0,255), 4); // [DEBUG]
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window->DC.PrevLineSize.y = line_height;
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window->DC.CurrLineSize.y = 0.0f;
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window->DC.PrevLineTextBaseOffset = ImMax(window->DC.CurrLineTextBaseOffset, text_baseline_y);
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window->DC.CurrLineTextBaseOffset = 0.0f;
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window->DC.IsSameLine = window->DC.IsSetPos = false;
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// Horizontal layout mode
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if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
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SameLine();
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}
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// Gets back to previous line and continue with horizontal layout
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// offset_from_start_x == 0 : follow right after previous item
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// offset_from_start_x != 0 : align to specified x position (relative to window/group left)
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