Log/Capture: added experimental io.ConfigWindowsCopyContentsWithCtrlC config option.

docs/CHANGELOG.txt

@@ -50,6 +50,10 @@ Other changes:
 - Fonts: removed const qualifiers from most font functions.
 - Log/Capture: better decorating of BeginMenu() and TabItem() output.
 - Log/Capture: a non terminated log ends automatically in the window which called it.
+- Log/Capture: added experimental io.ConfigWindowsCopyContentsWithCtrlC option to
+  automatically copy window contents into clipboard using CTRL+C. This is experimental
+  because (1) it currently breaks on nested Begin/End, (2) text output quality varies,
+  and (3) text output comes in submission order rather than spatial order.
 - Backends: DX12: Unmap() call specify written range. The range is informational and
   may be used by debug tools.
 - Backends: SDL2: Replace SDL_Vulkan_GetDrawableSize() forward declaration with the 

imgui.cpp

@@ -1422,6 +1422,7 @@ ImGuiIO::ImGuiIO()
     ConfigDragClickToInputText = false;
     ConfigWindowsResizeFromEdges = true;
     ConfigWindowsMoveFromTitleBarOnly = false;
+    ConfigWindowsCopyContentsWithCtrlC = false;
     ConfigScrollbarScrollByPage = true;
     ConfigMemoryCompactTimer = 60.0f;
     ConfigDebugIsDebuggerPresent = false;
@@ -7587,6 +7588,13 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
         if (want_focus && window == g.NavWindow)
             NavInitWindow(window, false); // <-- this is in the way for us to be able to defer and sort reappearing FocusWindow() calls
 
+        // Pressing CTRL+C copy window content into the clipboard
+        // [EXPERIMENTAL] Breaks on nested Begin/End pairs. We need to work that out and add better logging scope.
+        // [EXPERIMENTAL] Text outputs has many issues.
+        if (g.IO.ConfigWindowsCopyContentsWithCtrlC)
+            if (g.NavWindow && g.NavWindow->RootWindow == window && g.ActiveId == 0 && Shortcut(ImGuiMod_Ctrl | ImGuiKey_C))
+                LogToClipboard(0);
+
         // Title bar
         if (!(flags & ImGuiWindowFlags_NoTitleBar))
             RenderWindowTitleBarContents(window, ImRect(title_bar_rect.Min.x + window->WindowBorderSize, title_bar_rect.Min.y, title_bar_rect.Max.x - window->WindowBorderSize, title_bar_rect.Max.y), name, p_open);
@@ -7597,16 +7605,6 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
         if (flags & ImGuiWindowFlags_Tooltip)
             g.TooltipPreviousWindow = window;
 
-        // Pressing CTRL+C while holding on a window copy its content to the clipboard
-        // This works but 1. doesn't handle multiple Begin/End pairs, 2. recursing into another Begin/End pair - so we need to work that out and add better logging scope.
-        // Maybe we can support CTRL+C on every element?
-        /*
-        //if (g.NavWindow == window && g.ActiveId == 0)
-        if (g.ActiveId == window->MoveId)
-            if (g.IO.KeyCtrl && IsKeyPressed(ImGuiKey_C))
-                LogToClipboard();
-        */
-
         // We fill last item data based on Title Bar/Tab, in order for IsItemHovered() and IsItemActive() to be usable after Begin().
         // This is useful to allow creating context menus on title bar only, etc.
         SetLastItemDataForWindow(window, title_bar_rect);

imgui.h

@@ -2242,7 +2242,7 @@ struct ImGuiIO
     // Font system
     ImFontAtlas*Fonts;                          // <auto>           // Font atlas: load, rasterize and pack one or more fonts into a single texture.
     float       FontGlobalScale;                // = 1.0f           // Global scale all fonts
-    bool        FontAllowUserScaling;           // = false          // Allow user scaling text of individual window with CTRL+Wheel.
+    bool        FontAllowUserScaling;           // = false          // [OBSOLETE] Allow user scaling text of individual window with CTRL+Wheel.
     ImFont*     FontDefault;                    // = NULL           // Font to use on NewFrame(). Use NULL to uses Fonts->Fonts[0].
     ImVec2      DisplayFramebufferScale;        // = (1, 1)         // For retina display or other situations where window coordinates are different from framebuffer coordinates. This generally ends up in ImDrawData::FramebufferScale.
 
@@ -2263,8 +2263,9 @@ struct ImGuiIO
     bool        ConfigInputTextCursorBlink;     // = true           // Enable blinking cursor (optional as some users consider it to be distracting).
     bool        ConfigInputTextEnterKeepActive; // = false          // [BETA] Pressing Enter will keep item active and select contents (single-line only).
     bool        ConfigDragClickToInputText;     // = false          // [BETA] Enable turning DragXXX widgets into text input with a simple mouse click-release (without moving). Not desirable on devices without a keyboard.
-    bool        ConfigWindowsResizeFromEdges;   // = true           // Enable resizing of windows from their edges and from the lower-left corner. This requires (io.BackendFlags & ImGuiBackendFlags_HasMouseCursors) because it needs mouse cursor feedback. (This used to be a per-window ImGuiWindowFlags_ResizeFromAnySide flag)
+    bool        ConfigWindowsResizeFromEdges;   // = true           // Enable resizing of windows from their edges and from the lower-left corner. This requires ImGuiBackendFlags_HasMouseCursors for better mouse cursor feedback. (This used to be a per-window ImGuiWindowFlags_ResizeFromAnySide flag)
     bool        ConfigWindowsMoveFromTitleBarOnly;  // = false      // Enable allowing to move windows only when clicking on their title bar. Does not apply to windows without a title bar.
+    bool        ConfigWindowsCopyContentsWithCtrlC; // = false      // [EXPERIMENTAL] CTRL+C copy the contents of focused window into the clipboard. Experimental because: (1) has known issues with nested Begin/End pairs (2) text output quality varies (3) text output is in submission order rather than spatial order.
     bool        ConfigScrollbarScrollByPage;    // = true           // Enable scrolling page by page when clicking outside the scrollbar grab. When disabled, always scroll to clicked location. When enabled, Shift+Click scrolls to clicked location.
     float       ConfigMemoryCompactTimer;       // = 60.0f          // Timer (in seconds) to free transient windows/tables memory buffers when unused. Set to -1.0f to disable.
 

imgui_demo.cpp

@@ -549,8 +549,10 @@ void ImGui::ShowDemoWindow(bool* p_open)
             ImGui::Checkbox("io.ConfigDragClickToInputText", &io.ConfigDragClickToInputText);
             ImGui::SameLine(); HelpMarker("Enable turning DragXXX widgets into text input with a simple mouse click-release (without moving).");
             ImGui::Checkbox("io.ConfigWindowsResizeFromEdges", &io.ConfigWindowsResizeFromEdges);
-            ImGui::SameLine(); HelpMarker("Enable resizing of windows from their edges and from the lower-left corner.\nThis requires (io.BackendFlags & ImGuiBackendFlags_HasMouseCursors) because it needs mouse cursor feedback.");
+            ImGui::SameLine(); HelpMarker("Enable resizing of windows from their edges and from the lower-left corner.\nThis requires ImGuiBackendFlags_HasMouseCursors for better mouse cursor feedback.");
             ImGui::Checkbox("io.ConfigWindowsMoveFromTitleBarOnly", &io.ConfigWindowsMoveFromTitleBarOnly);
+            ImGui::Checkbox("io.ConfigWindowsCopyContentsWithCtrlC", &io.ConfigWindowsCopyContentsWithCtrlC); // [EXPERIMENTAL]
+            ImGui::SameLine(); HelpMarker("*EXPERIMENTAL* CTRL+C copy the contents of focused window into the clipboard.\n\nExperimental because:\n- (1) has known issues with nested Begin/End pairs.\n- (2) text output quality varies.\n- (3) text output is in submission order rather than spatial order.");
             ImGui::Checkbox("io.ConfigScrollbarScrollByPage", &io.ConfigScrollbarScrollByPage);
             ImGui::SameLine(); HelpMarker("Enable scrolling page by page when clicking outside the scrollbar grab.\nWhen disabled, always scroll to clicked location.\nWhen enabled, Shift+Click scrolls to clicked location.");
             ImGui::Checkbox("io.ConfigMacOSXBehaviors", &io.ConfigMacOSXBehaviors);