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Separator: added and following style.SeparatorSize. (#2657, #9263)

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Reapply c5d83d8a from 1.70 which was reverted in 9534ef9b2.
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ocornut
2026-02-26 17:21:57 +01:00
parent c40226e9de
commit ef022c5e0a
5 changed files with 43 additions and 10 deletions
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19
imgui.cpp
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@@ -394,7 +394,17 @@ IMPLEMENTING SUPPORT for ImGuiBackendFlags_RendererHasTextures:
When you are not sure about an old symbol or function name, try using the Search/Find function of your IDE to look for comments or references in all imgui files.
You can read releases logs https://github.com/ocornut/imgui/releases for more details.
- 2026/02/27 (1.92.7) - Commented out legacy signature for Combo(), ListBox(), signatures which were obsoleted in 1.90 (Nov 2023), when the getter callback type was changed.
- 2026/02/26 (1.92.7) - Separator: fixed a legacy quirk where Separator() was submitting a zero-height item for layout purpose, even though it draws a 1-pixel separator.
The fix could affect code e.g. computing height from multiple widgets in order to allocate vertical space for a footer or multi-line status bar. (#2657, #9263)
The "Console" example had such a bug:
float footer_height = style.ItemSpacing.y + ImGui::GetFrameHeightWithSpacing();
BeginChild("ScrollingRegion", { 0, -footer_height });
Should be:
float footer_height = style.ItemSpacing.y + style.SeparatorSize + ImGui::GetFrameHeightWithSpacing();
BeginChild("ScrollingRegion", { 0, -footer_height });
When such idiom was used and assuming zero-height Separator, it is likely that
in 1.92.7 the resulting window will have unexpected 1 pixel scrolling range.
- 2026/02/23 (1.92.7) - Commented out legacy signature for Combo(), ListBox(), signatures which were obsoleted in 1.90 (Nov 2023), when the getter callback type was changed.
- Old getter type: bool (*getter)(void* user_data, int idx, const char** out_text) // Set label + return bool. False replaced label with placeholder.
- New getter type: const char* (*getter)(void* user_data, int idx) // Return label or NULL/empty label if missing
- 2026/01/08 (1.92.6) - Commented out legacy names obsoleted in 1.90 (Sept 2023): 'BeginChildFrame()' --> 'BeginChild()' with 'ImGuiChildFlags_FrameStyle'. 'EndChildFrame()' --> 'EndChild()'. 'ShowStackToolWindow()' --> 'ShowIDStackToolWindow()'. 'IM_OFFSETOF()' --> 'offsetof()'.
@@ -1499,7 +1509,8 @@ ImGuiStyle::ImGuiStyle()
ColorButtonPosition = ImGuiDir_Right; // Side of the color button in the ColorEdit4 widget (left/right). Defaults to ImGuiDir_Right.
ButtonTextAlign = ImVec2(0.5f,0.5f);// Alignment of button text when button is larger than text.
SelectableTextAlign = ImVec2(0.0f,0.0f);// Alignment of selectable text. Defaults to (0.0f, 0.0f) (top-left aligned). It's generally important to keep this left-aligned if you want to lay multiple items on a same line.
SeparatorTextBorderSize = 3.0f; // Thickness of border in SeparatorText()
SeparatorSize = 1.0f; // Thickness of border in Separator().
SeparatorTextBorderSize = 3.0f; // Thickness of border in SeparatorText().
SeparatorTextAlign = ImVec2(0.0f,0.5f);// Alignment of text within the separator. Defaults to (0.0f, 0.5f) (left aligned, center).
SeparatorTextPadding = ImVec2(20.0f,3.f);// Horizontal offset of text from each edge of the separator + spacing on other axis. Generally small values. .y is recommended to be == FramePadding.y.
DisplayWindowPadding = ImVec2(19,19); // Window position are clamped to be visible within the display area or monitors by at least this amount. Only applies to regular windows.
@@ -1572,8 +1583,9 @@ void ImGuiStyle::ScaleAllSizes(float scale_factor)
DragDropTargetBorderSize = ImTrunc(DragDropTargetBorderSize * scale_factor);
DragDropTargetPadding = ImTrunc(DragDropTargetPadding * scale_factor);
ColorMarkerSize = ImTrunc(ColorMarkerSize * scale_factor);
SeparatorTextPadding = ImTrunc(SeparatorTextPadding * scale_factor);
SeparatorSize = ImTrunc(SeparatorSize * scale_factor);
SeparatorTextBorderSize = ImTrunc(SeparatorTextBorderSize * scale_factor);
SeparatorTextPadding = ImTrunc(SeparatorTextPadding * scale_factor);
DisplayWindowPadding = ImTrunc(DisplayWindowPadding * scale_factor);
DisplaySafeAreaPadding = ImTrunc(DisplaySafeAreaPadding * scale_factor);
MouseCursorScale = ImTrunc(MouseCursorScale * scale_factor);
@@ -3636,6 +3648,7 @@ static const ImGuiStyleVarInfo GStyleVarsInfo[] =
{ 1, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, TreeLinesRounding)}, // ImGuiStyleVar_TreeLinesRounding
{ 2, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, ButtonTextAlign) }, // ImGuiStyleVar_ButtonTextAlign
{ 2, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, SelectableTextAlign) }, // ImGuiStyleVar_SelectableTextAlign
{ 1, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, SeparatorSize)}, // ImGuiStyleVar_SeparatorSize
{ 1, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, SeparatorTextBorderSize)}, // ImGuiStyleVar_SeparatorTextBorderSize
{ 2, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, SeparatorTextAlign) }, // ImGuiStyleVar_SeparatorTextAlign
{ 2, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, SeparatorTextPadding) }, // ImGuiStyleVar_SeparatorTextPadding