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https://github.com/Drezil/imgui.git
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Added SetNextWindowSizeConstraint() + demo code (#668)
This commit is contained in:
48
imgui.cpp
48
imgui.cpp
@ -457,7 +457,6 @@
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The list below consist mostly of notes of things to do before they are requested/discussed by users (at that point it usually happens on the github)
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- doc: add a proper documentation+regression testing system (#435)
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- window: maximum window size settings (per-axis). for large popups in particular user may not want the popup to fill all space.
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- window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
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- window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis).
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- window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
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@ -3416,7 +3415,7 @@ static inline void ClearSetNextWindowData()
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{
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ImGuiContext& g = *GImGui;
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g.SetNextWindowPosCond = g.SetNextWindowSizeCond = g.SetNextWindowContentSizeCond = g.SetNextWindowCollapsedCond = 0;
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g.SetNextWindowFocus = false;
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g.SetNextWindowSizeConstraint = g.SetNextWindowFocus = false;
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}
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static bool BeginPopupEx(const char* str_id, ImGuiWindowFlags extra_flags)
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@ -3731,6 +3730,31 @@ static ImGuiWindow* CreateNewWindow(const char* name, ImVec2 size, ImGuiWindowFl
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return window;
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}
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static void ApplySizeFullWithConstraint(ImGuiWindow* window, ImVec2 new_size)
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{
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ImGuiContext& g = *GImGui;
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if (g.SetNextWindowSizeConstraint)
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{
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// Using -1,-1 on either X/Y axis to preserve the current size.
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ImRect cr = g.SetNextWindowSizeConstraintRect;
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new_size.x = (cr.Min.x >= 0 && cr.Max.x >= 0) ? ImClamp(new_size.x, cr.Min.x, cr.Max.x) : window->SizeFull.x;
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new_size.y = (cr.Min.y >= 0 && cr.Max.y >= 0) ? ImClamp(new_size.y, cr.Min.y, cr.Max.y) : window->SizeFull.y;
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if (g.SetNextWindowSizeConstraintCallback)
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{
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ImGuiSizeConstraintCallbackData data;
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data.UserData = g.SetNextWindowSizeConstraintCallbackUserData;
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data.Pos = window->Pos;
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data.CurrentSize = window->SizeFull;
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data.DesiredSize = new_size;
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g.SetNextWindowSizeConstraintCallback(&data);
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new_size = data.DesiredSize;
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}
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}
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if (!(window->Flags & (ImGuiWindowFlags_ChildWindow | ImGuiWindowFlags_AlwaysAutoResize)))
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new_size = ImMax(new_size, g.Style.WindowMinSize);
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window->SizeFull = new_size;
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}
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// Push a new ImGui window to add widgets to.
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// - A default window called "Debug" is automatically stacked at the beginning of every frame so you can use widgets without explicitly calling a Begin/End pair.
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// - Begin/End can be called multiple times during the frame with the same window name to append content.
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@ -3972,9 +3996,8 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
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}
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}
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// Apply window size constraints and final size
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if (!(flags & (ImGuiWindowFlags_ChildWindow | ImGuiWindowFlags_AlwaysAutoResize)))
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window->SizeFull = ImMax(window->SizeFull, style.WindowMinSize);
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// Apply minimum/maximum window size constraints and final size
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ApplySizeFullWithConstraint(window, window->SizeFull);
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window->Size = window->Collapsed ? window->TitleBarRect().GetSize() : window->SizeFull;
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// POSITION
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@ -4096,7 +4119,7 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
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if (g.HoveredWindow == window && held && g.IO.MouseDoubleClicked[0])
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{
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// Manual auto-fit when double-clicking
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window->SizeFull = size_auto_fit;
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ApplySizeFullWithConstraint(window, size_auto_fit);
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if (!(flags & ImGuiWindowFlags_NoSavedSettings))
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MarkSettingsDirty();
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SetActiveID(0);
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@ -4104,7 +4127,7 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
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else if (held)
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{
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// We don't use an incremental MouseDelta but rather compute an absolute target size based on mouse position
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window->SizeFull = ImMax((g.IO.MousePos - g.ActiveIdClickOffset + resize_rect.GetSize()) - window->Pos, style.WindowMinSize);
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ApplySizeFullWithConstraint(window, (g.IO.MousePos - g.ActiveIdClickOffset + resize_rect.GetSize()) - window->Pos);
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if (!(flags & ImGuiWindowFlags_NoSavedSettings))
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MarkSettingsDirty();
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}
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@ -4177,6 +4200,7 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
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// Setup drawing context
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window->DC.IndentX = 0.0f + window->WindowPadding.x - window->Scroll.x;
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window->DC.GroupOffsetX = 0.0f;
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window->DC.ColumnsOffsetX = 0.0f;
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window->DC.CursorStartPos = window->Pos + ImVec2(window->DC.IndentX + window->DC.ColumnsOffsetX, window->TitleBarHeight() + window->MenuBarHeight() + window->WindowPadding.y - window->Scroll.y);
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window->DC.CursorPos = window->DC.CursorStartPos;
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@ -4268,6 +4292,7 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
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if (first_begin_of_the_frame)
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window->Accessed = false;
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window->BeginCount++;
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g.SetNextWindowSizeConstraint = false;
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// Child window can be out of sight and have "negative" clip windows.
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// Mark them as collapsed so commands are skipped earlier (we can't manually collapse because they have no title bar).
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@ -4906,6 +4931,15 @@ void ImGui::SetNextWindowSize(const ImVec2& size, ImGuiSetCond cond)
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g.SetNextWindowSizeCond = cond ? cond : ImGuiSetCond_Always;
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}
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void ImGui::SetNextWindowSizeConstraint(const ImVec2& size_min, const ImVec2& size_max, ImGuiSizeConstraintCallback custom_callback, void* custom_callback_user_data)
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{
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ImGuiContext& g = *GImGui;
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g.SetNextWindowSizeConstraint = true;
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g.SetNextWindowSizeConstraintRect = ImRect(size_min, size_max);
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g.SetNextWindowSizeConstraintCallback = custom_callback;
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g.SetNextWindowSizeConstraintCallbackUserData = custom_callback_user_data;
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}
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void ImGui::SetNextWindowContentSize(const ImVec2& size)
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{
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ImGuiContext& g = *GImGui;
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