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BeginChild(): resizing is only clamped on axis where there's no scrollbar. Added an extra ResizeX in Demo->Simple Layout.

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This commit is contained in:
ocornut 2023-11-07 17:15:57 +01:00
parent cdbc21a191
commit fa4c49b4a7
2 changed files with 8 additions and 3 deletions
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9
imgui.cpp
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@ -6018,8 +6018,13 @@ static int ImGui::UpdateWindowManualResize(ImGuiWindow* window, const ImVec2& si
ImVec2 clamp_min(border_n == ImGuiDir_Right ? clamp_rect.Min.x : -FLT_MAX, border_n == ImGuiDir_Down || (border_n == ImGuiDir_Up && window_move_from_title_bar) ? clamp_rect.Min.y : -FLT_MAX);
ImVec2 clamp_max(border_n == ImGuiDir_Left ? clamp_rect.Max.x : +FLT_MAX, border_n == ImGuiDir_Up ? clamp_rect.Max.y : +FLT_MAX);
border_target = ImClamp(border_target, clamp_min, clamp_max);
if (window->Flags & ImGuiWindowFlags_ChildWindow) // Clamp resizing of childs within parent
border_target = ImClamp(border_target, window->ParentWindow->InnerClipRect.Min, window->ParentWindow->InnerClipRect.Max);
if (flags & ImGuiWindowFlags_ChildWindow) // Clamp resizing of childs within parent
{
if ((flags & (ImGuiWindowFlags_HorizontalScrollbar | ImGuiWindowFlags_AlwaysHorizontalScrollbar)) == 0 || (flags & ImGuiWindowFlags_NoScrollbar))
border_target.x = ImClamp(border_target.x, window->ParentWindow->InnerClipRect.Min.x, window->ParentWindow->InnerClipRect.Max.x);
if (flags & ImGuiWindowFlags_NoScrollbar)
border_target.y = ImClamp(border_target.y, window->ParentWindow->InnerClipRect.Min.y, window->ParentWindow->InnerClipRect.Max.y);
}
if (!ignore_resize)
CalcResizePosSizeFromAnyCorner(window, border_target, ImMin(def.SegmentN1, def.SegmentN2), &pos_target, &size_target);
}

2
imgui_demo.cpp
View File

@ -7425,7 +7425,7 @@ static void ShowExampleAppLayout(bool* p_open)
// Left
static int selected = 0;
{
ImGui::BeginChild("left pane", ImVec2(150, 0), ImGuiChildFlags_Border);
ImGui::BeginChild("left pane", ImVec2(150, 0), ImGuiChildFlags_Border | ImGuiChildFlags_ResizeX);
for (int i = 0; i < 100; i++)
{
// FIXME: Good candidate to use ImGuiSelectableFlags_SelectOnNav