Updated ImGui.

3rdparty/ocornut-imgui/imgui.cpp

@@ -19,7 +19,7 @@
  - FREQUENTLY ASKED QUESTIONS (FAQ), TIPS
    - How can I help?
    - How do I update to a newer version of ImGui?
-   - Can I have multiple widgets with the same label? Can I have widget without a label? (Yes)
+   - Can I have multiple widgets with the same label? Can I have widget without a label? (Yes) / A primer on the use of labels/IDs in ImGui.
    - I integrated ImGui in my engine and the text or lines are blurry..
    - I integrated ImGui in my engine and some elements are disappearing when I move windows around..
    - How can I load a different font than the default?
@@ -149,6 +149,7 @@
  Here is a change-log of API breaking changes, if you are using one of the functions listed, expect to have to fix some code.
  Also read releases logs https://github.com/ocornut/imgui/releases for more details.
 
+ - 2016/03/02 (1.48) - InputText() completion/history/always callbacks: if you modify the text buffer manually (without using DeleteChars()/InsertChars() helper) you need to maintain the BufTextLen field. added an assert.
  - 2016/01/23 (1.48) - fixed not honoring exact width passed to PushItemWidth(), previously it would add extra FramePadding.x*2 over that width. if you had manual pixel-perfect alignment in place it might affect you.
  - 2015/12/27 (1.48) - fixed ImDrawList::AddRect() which used to render a rectangle 1 px too large on each axis.
  - 2015/12/04 (1.47) - renamed Color() helpers to ValueColor() - dangerously named, rarely used and probably to be made obsolete.
@@ -425,6 +426,7 @@
  - window: detect extra End() call that pop the "Debug" window out and assert at call site instead of later.
  - window: consider renaming "GetWindowFont" which conflict with old Windows #define (#340)
  - window/tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
+ - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
  - draw-list: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
 !- scrolling: allow immediately effective change of scroll if we haven't appended items yet
  - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
@@ -436,6 +438,7 @@
  - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
  - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
  - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
+ - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
  - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
  - input text multi-line: way to dynamically grow the buffer without forcing the user to initially allocate for worse case (follow up on #200)
  - input text multi-line: line numbers? status bar? (follow up on #200)
@@ -443,6 +446,7 @@
  - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
  - input number: use mouse wheel to step up/down
  - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
+ - button: provide a button that looks framed.
  - text: proper alignment options
  - image/image button: misalignment on padded/bordered button?
  - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
@@ -450,6 +454,7 @@
  - layout: horizontal flow until no space left (#404)
  - layout: more generic alignment state (left/right/centered) for single items?
  - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
+ - layout: BeginGroup() needs a border option.
  - columns: declare column set (each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
  - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
  - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
@@ -467,9 +472,11 @@
 !- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
  - popups: add variant using global identifier similar to Begin/End (#402)
  - popups: border options. richer api like BeginChild() perhaps? (#197)
+ - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last prefered button" and may teleport when moving mouse
  - menus: local shortcuts, global shortcuts (#456, #126)
  - menus: icons
  - menus: menubars: some sort of priority / effect of main menu-bar on desktop size?
+ - menus: calling BeginMenu() twice with a same name doesn't seem to append nicely
  - statusbar: add a per-window status bar helper similar to what menubar does.
  - tabs (#261, #351)
  - separator: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y)
@@ -493,6 +500,7 @@
  - text edit: flag to disable live update of the user buffer.
  - text edit: field resize behavior - field could stretch when being edited? hover tooltip shows more text?
  - tree node / optimization: avoid formatting when clipped.
+ - tree node: clarify spacing, perhaps provide API to query exact spacing. provide API to draw the primitive. same with Bullet().
  - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
  - tree node: add treenode/treepush int variants? because (void*) cast from int warns on some platforms/settings
  - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
@@ -523,6 +531,7 @@
  - input: support track pad style scrolling & slider edit.
  - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
  - misc: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
+ - misc: provide HoveredTime and ActivatedTime to ease the creation of animations.
  - style editor: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438)
  - style editor: color child window height expressed in multiple of line height.
  - remote: make a system like RemoteImGui first-class citizen/project (#75)
@@ -1990,7 +1999,7 @@ void ImGui::NewFrame()
     }
 
     // Are we using inputs? Tell user so they can capture/discard the inputs away from the rest of their application.
-    // When clicking outside of a window we assume the click is owned by the application and won't request capture.
+    // When clicking outside of a window we assume the click is owned by the application and won't request capture. We need to track click ownership.
     int mouse_earliest_button_down = -1;
     bool mouse_any_down = false;
     for (int i = 0; i < IM_ARRAYSIZE(g.IO.MouseDown); i++)
@@ -2002,16 +2011,19 @@ void ImGui::NewFrame()
             if (mouse_earliest_button_down == -1 || g.IO.MouseClickedTime[mouse_earliest_button_down] > g.IO.MouseClickedTime[i])
                 mouse_earliest_button_down = i;
     }
-    bool mouse_owned_by_application = mouse_earliest_button_down != -1 && !g.IO.MouseDownOwned[mouse_earliest_button_down];
-    g.IO.WantCaptureMouse = (!mouse_owned_by_application && g.HoveredWindow != NULL) || (!mouse_owned_by_application && mouse_any_down) || (g.ActiveId != 0) || (!g.OpenedPopupStack.empty()) || (g.CaptureMouseNextFrame);
-    g.IO.WantCaptureKeyboard = (g.ActiveId != 0) || (g.CaptureKeyboardNextFrame);
+    bool mouse_avail_to_imgui = (mouse_earliest_button_down == -1) || g.IO.MouseDownOwned[mouse_earliest_button_down];
+    if (g.CaptureMouseNextFrame != -1)
+        g.IO.WantCaptureMouse = (g.CaptureMouseNextFrame != 0);
+    else
+        g.IO.WantCaptureMouse = (mouse_avail_to_imgui && (g.HoveredWindow != NULL || mouse_any_down)) || (g.ActiveId != 0) || (!g.OpenedPopupStack.empty());
+    g.IO.WantCaptureKeyboard = (g.CaptureKeyboardNextFrame != -1) ? (g.CaptureKeyboardNextFrame != 0) : (g.ActiveId != 0);
     g.IO.WantTextInput = (g.ActiveId != 0 && g.InputTextState.Id == g.ActiveId);
     g.MouseCursor = ImGuiMouseCursor_Arrow;
-    g.CaptureMouseNextFrame = g.CaptureKeyboardNextFrame = false;
+    g.CaptureMouseNextFrame = g.CaptureKeyboardNextFrame = -1;
     g.OsImePosRequest = ImVec2(1.0f, 1.0f); // OS Input Method Editor showing on top-left of our window by default
 
     // If mouse was first clicked outside of ImGui bounds we also cancel out hovering.
-    if (mouse_owned_by_application)
+    if (!mouse_avail_to_imgui)
         g.HoveredWindow = g.HoveredRootWindow = NULL;
 
     // Scale & Scrolling
@@ -2990,14 +3002,14 @@ void ImGui::SetMouseCursor(ImGuiMouseCursor cursor_type)
     GImGui->MouseCursor = cursor_type;
 }
 
-void ImGui::CaptureKeyboardFromApp()
+void ImGui::CaptureKeyboardFromApp(bool capture)
 {
-    GImGui->CaptureKeyboardNextFrame = true;
+    GImGui->CaptureKeyboardNextFrame = capture ? 1 : 0;
 }
 
-void ImGui::CaptureMouseFromApp()
+void ImGui::CaptureMouseFromApp(bool capture)
 {
-    GImGui->CaptureMouseNextFrame = true;
+    GImGui->CaptureMouseNextFrame = capture ? 1 : 0;
 }
 
 bool ImGui::IsItemHovered()
@@ -3383,12 +3395,11 @@ void ImGui::EndChild()
     else
     {
         // When using auto-filling child window, we don't provide full width/height to ItemSize so that it doesn't feed back into automatic size-fitting.
-        ImGuiState& g = *GImGui;
         ImVec2 sz = ImGui::GetWindowSize();
-        if (window->Flags & ImGuiWindowFlags_ChildWindowAutoFitX) // Arbitrary minimum zeroish child size of 4.0f
-            sz.x = ImMax(4.0f, sz.x - g.Style.WindowPadding.x);
+        if (window->Flags & ImGuiWindowFlags_ChildWindowAutoFitX) // Arbitrary minimum zero-ish child size of 4.0f causes less trouble than a 0.0f
+            sz.x = ImMax(4.0f, sz.x);
         if (window->Flags & ImGuiWindowFlags_ChildWindowAutoFitY)
-            sz.y = ImMax(4.0f, sz.y - g.Style.WindowPadding.y);
+            sz.y = ImMax(4.0f, sz.y);
 
         ImGui::End();
 
@@ -5078,6 +5089,8 @@ void ImGui::TextUnformatted(const char* text, const char* text_end)
                     while (line < text_end && lines_skipped < lines_skippable)
                     {
                         const char* line_end = strchr(line, '\n');
+                        if (!line_end)
+                            line_end = text_end;
                         line = line_end + 1;
                         lines_skipped++;
                     }
@@ -5223,7 +5236,11 @@ bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
         SetHoveredID(id);
         if (!(flags & ImGuiButtonFlags_NoKeyModifiers) || (!g.IO.KeyCtrl && !g.IO.KeyShift && !g.IO.KeyAlt))
         {
-            if (g.IO.MouseClicked[0])
+            if (g.IO.MouseDoubleClicked[0] && (flags & ImGuiButtonFlags_PressedOnDoubleClick))
+            {
+                pressed = true;
+            }
+            else if (g.IO.MouseClicked[0])
             {
                 if (flags & ImGuiButtonFlags_PressedOnClick)
                 {
@@ -6405,6 +6422,7 @@ bool ImGui::DragBehavior(const ImRect& frame_bb, ImGuiID id, float* v, float v_s
                 g.DragLastMouseDelta = ImVec2(0.f, 0.f);
             }
 
+            float v_cur = g.DragCurrentValue;
             const ImVec2 mouse_drag_delta = ImGui::GetMouseDragDelta(0, 1.0f);
             if (fabsf(mouse_drag_delta.x - g.DragLastMouseDelta.x) > 0.0f)
             {
@@ -6416,7 +6434,6 @@ bool ImGui::DragBehavior(const ImRect& frame_bb, ImGuiID id, float* v, float v_s
                 if (g.IO.KeyAlt && g.DragSpeedScaleSlow >= 0.0f)
                     speed = speed * g.DragSpeedScaleSlow;
 
-                float v_cur = g.DragCurrentValue;
                 float delta = (mouse_drag_delta.x - g.DragLastMouseDelta.x) * speed;
                 if (fabsf(power - 1.0f) > 0.001f)
                 {
@@ -6438,14 +6455,14 @@ bool ImGui::DragBehavior(const ImRect& frame_bb, ImGuiID id, float* v, float v_s
                 if (v_min < v_max)
                     v_cur = ImClamp(v_cur, v_min, v_max);
                 g.DragCurrentValue = v_cur;
+            }
 
-                // Round to user desired precision, then apply
-                v_cur = RoundScalar(v_cur, decimal_precision);
-                if (*v != v_cur)
-                {
-                    *v = v_cur;
-                    value_changed = true;
-                }
+            // Round to user desired precision, then apply
+            v_cur = RoundScalar(v_cur, decimal_precision);
+            if (*v != v_cur)
+            {
+                *v = v_cur;
+                value_changed = true;
             }
         }
         else
@@ -7118,41 +7135,41 @@ void ImGuiTextEditState::OnKeyPressed(int key)
 
 // Public API to manipulate UTF-8 text
 // We expose UTF-8 to the user (unlike the STB_TEXTEDIT_* functions which are manipulating wchar)
+// FIXME: The existence of this rarely exercised code path is a bit of a nuisance.
 void ImGuiTextEditCallbackData::DeleteChars(int pos, int bytes_count)
 {
+    IM_ASSERT(pos + bytes_count <= BufTextLen);
     char* dst = Buf + pos;
     const char* src = Buf + pos + bytes_count;
     while (char c = *src++)
         *dst++ = c;
     *dst = '\0';
 
-    BufDirty = true;
     if (CursorPos + bytes_count >= pos)
         CursorPos -= bytes_count;
     else if (CursorPos >= pos)
         CursorPos = pos;
     SelectionStart = SelectionEnd = CursorPos;
+    BufDirty = true;
+    BufTextLen -= bytes_count;
 }
 
 void ImGuiTextEditCallbackData::InsertChars(int pos, const char* new_text, const char* new_text_end)
 {
-    const int text_len = (int)strlen(Buf);
-    if (!new_text_end)
-        new_text_end = new_text + strlen(new_text);
-    const int new_text_len = (int)(new_text_end - new_text);
-
-    if (new_text_len + text_len + 1 >= BufSize)
+    const int new_text_len = new_text_end ? (int)(new_text_end - new_text) : (int)strlen(new_text);
+    if (new_text_len + BufTextLen + 1 >= BufSize)
         return;
 
-    if (text_len != pos)
-        memmove(Buf + pos + new_text_len, Buf + pos, (size_t)(text_len - pos));
+    if (BufTextLen != pos)
+        memmove(Buf + pos + new_text_len, Buf + pos, (size_t)(BufTextLen - pos));
     memcpy(Buf + pos, new_text, (size_t)new_text_len * sizeof(char));
-    Buf[text_len + new_text_len] = '\0';
+    Buf[BufTextLen + new_text_len] = '\0';
 
-    BufDirty = true;
     if (CursorPos >= pos)
         CursorPos += new_text_len;
     SelectionStart = SelectionEnd = CursorPos;
+    BufDirty = true;
+    BufTextLen += new_text_len;
 }
 
 // Return false to discard a character.
@@ -7540,10 +7557,13 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
                     event_flag = ImGuiInputTextFlags_CallbackHistory;
                     event_key = ImGuiKey_DownArrow;
                 }
+                else if (flags & ImGuiInputTextFlags_CallbackAlways)
+                    event_flag = ImGuiInputTextFlags_CallbackAlways;
 
-                if (event_key != ImGuiKey_COUNT || (flags & ImGuiInputTextFlags_CallbackAlways) != 0)
+                if (event_flag)
                 {
                     ImGuiTextEditCallbackData callback_data;
+                    memset(&callback_data, 0, sizeof(ImGuiTextEditCallbackData));
                     callback_data.EventFlag = event_flag;
                     callback_data.Flags = flags;
                     callback_data.UserData = user_data;
@@ -7551,10 +7571,11 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
 
                     callback_data.EventKey = event_key;
                     callback_data.Buf = edit_state.TempTextBuffer.Data;
+                    callback_data.BufTextLen = edit_state.CurLenA;
                     callback_data.BufSize = edit_state.BufSizeA;
                     callback_data.BufDirty = false;
 
-                    // We have to convert from position from wchar to UTF-8 positions
+                    // We have to convert from wchar-positions to UTF-8-positions, which can be pretty slow (an incentive to ditch the ImWchar buffer, see https://github.com/nothings/stb/issues/188)
                     ImWchar* text = edit_state.Text.Data;
                     const int utf8_cursor_pos = callback_data.CursorPos = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.cursor);
                     const int utf8_selection_start = callback_data.SelectionStart = ImTextCountUtf8BytesFromStr(text, text + edit_state.StbState.select_start);
@@ -7572,8 +7593,9 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
                     if (callback_data.SelectionEnd != utf8_selection_end)      edit_state.StbState.select_end = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionEnd);
                     if (callback_data.BufDirty)
                     {
-                        edit_state.CurLenW = ImTextStrFromUtf8(text, edit_state.Text.Size, edit_state.TempTextBuffer.Data, NULL);
-                        edit_state.CurLenA = (int)strlen(edit_state.TempTextBuffer.Data);
+                        IM_ASSERT(callback_data.BufTextLen == (int)strlen(callback_data.Buf)); // You need to maintain BufTextLen if you change the text!
+                        edit_state.CurLenW = ImTextStrFromUtf8(edit_state.Text.Data, edit_state.Text.Size, callback_data.Buf, NULL);
+                        edit_state.CurLenA = callback_data.BufTextLen;  // Assume correct length and valid UTF-8 from user, saves us an extra strlen()
                         edit_state.CursorAnimReset();
                     }
                 }
@@ -8137,6 +8159,7 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
     if (flags & ImGuiSelectableFlags_Menu) button_flags |= ImGuiButtonFlags_PressedOnClick;
     if (flags & ImGuiSelectableFlags_MenuItem) button_flags |= ImGuiButtonFlags_PressedOnClick|ImGuiButtonFlags_PressedOnRelease;
     if (flags & ImGuiSelectableFlags_Disabled) button_flags |= ImGuiButtonFlags_Disabled;
+    if (flags & ImGuiSelectableFlags_AllowDoubleClick) button_flags |= ImGuiButtonFlags_PressedOnDoubleClick;
     bool hovered, held;
     bool pressed = ButtonBehavior(bb_with_spacing, id, &hovered, &held, button_flags);
     if (flags & ImGuiSelectableFlags_Disabled)

3rdparty/ocornut-imgui/imgui.h

@@ -239,7 +239,7 @@ namespace ImGui
     IMGUI_API void          TextUnformatted(const char* text, const char* text_end = NULL);         // doesn't require null terminated string if 'text_end' is specified. no copy done to any bounded stack buffer, recommended for long chunks of text
     IMGUI_API void          LabelText(const char* label, const char* fmt, ...) IM_PRINTFARGS(2);    // display text+label aligned the same way as value+label widgets
     IMGUI_API void          LabelTextV(const char* label, const char* fmt, va_list args);
-    IMGUI_API void          Bullet();
+    IMGUI_API void          Bullet();                                                               // draw a small circle and keep the cursor on the same line. advance you by the same distance as an empty TreeNode() call.
     IMGUI_API void          BulletText(const char* fmt, ...) IM_PRINTFARGS(1);
     IMGUI_API void          BulletTextV(const char* fmt, va_list args);
     IMGUI_API bool          Button(const char* label, const ImVec2& size = ImVec2(0,0));
@@ -303,8 +303,8 @@ namespace ImGui
     IMGUI_API bool          VSliderInt(const char* label, const ImVec2& size, int* v, int v_min, int v_max, const char* display_format = "%.0f");
 
     // Widgets: Trees
-    IMGUI_API bool          TreeNode(const char* str_label_id);                                     // if returning 'true' the node is open and the user is responsible for calling TreePop()
-    IMGUI_API bool          TreeNode(const char* str_id, const char* fmt, ...) IM_PRINTFARGS(2);    // "
+    IMGUI_API bool          TreeNode(const char* str_label_id);                                     // if returning 'true' the node is open and the user is responsible for calling TreePop().
+    IMGUI_API bool          TreeNode(const char* str_id, const char* fmt, ...) IM_PRINTFARGS(2);    // read the FAQ about why and how to use ID. to align arbitrary text at the same level as a TreeNode() you can use Bullet().
     IMGUI_API bool          TreeNode(const void* ptr_id, const char* fmt, ...) IM_PRINTFARGS(2);    // "
     IMGUI_API bool          TreeNodeV(const char* str_id, const char* fmt, va_list args);           // "
     IMGUI_API bool          TreeNodeV(const void* ptr_id, const char* fmt, va_list args);           // "
@@ -415,8 +415,8 @@ namespace ImGui
     IMGUI_API void          ResetMouseDragDelta(int button = 0);                                //
     IMGUI_API ImGuiMouseCursor GetMouseCursor();                                                // get desired cursor type, reset in ImGui::NewFrame(), this updated during the frame. valid before Render(). If you use software rendering by setting io.MouseDrawCursor ImGui will render those for you
     IMGUI_API void          SetMouseCursor(ImGuiMouseCursor type);                              // set desired cursor type
-    IMGUI_API void          CaptureKeyboardFromApp();                                           // manually enforce imgui setting the io.WantCaptureKeyboard flag next frame (your application needs to handle it). e.g. capture keyboard when your widget is being hovered.
-    IMGUI_API void          CaptureMouseFromApp();                                              // manually enforce imgui setting the io.WantCaptureMouse flag next frame (your application needs to handle it).
+    IMGUI_API void          CaptureKeyboardFromApp(bool capture = true);                        // manually override io.WantCaptureKeyboard flag next frame (said flag is entirely left for your application handle). e.g. force capture keyboard when your widget is being hovered.
+    IMGUI_API void          CaptureMouseFromApp(bool capture = true);                           // manually override io.WantCaptureMouse flag next frame (said flag is entirely left for your application handle).
 
     // Helpers functions to access functions pointers in ImGui::GetIO()
     IMGUI_API void*         MemAlloc(size_t sz);
@@ -488,7 +488,7 @@ enum ImGuiInputTextFlags_
     ImGuiInputTextFlags_EnterReturnsTrue    = 1 << 5,   // Return 'true' when Enter is pressed (as opposed to when the value was modified)
     ImGuiInputTextFlags_CallbackCompletion  = 1 << 6,   // Call user function on pressing TAB (for completion handling)
     ImGuiInputTextFlags_CallbackHistory     = 1 << 7,   // Call user function on pressing Up/Down arrows (for history handling)
-    ImGuiInputTextFlags_CallbackAlways      = 1 << 8,   // Call user function every time
+    ImGuiInputTextFlags_CallbackAlways      = 1 << 8,   // Call user function every time. User code may query cursor position, modify text buffer.
     ImGuiInputTextFlags_CallbackCharFilter  = 1 << 9,   // Call user function to filter character. Modify data->EventChar to replace/filter input, or return 1 to discard character.
     ImGuiInputTextFlags_AllowTabInput       = 1 << 10,  // Pressing TAB input a '\t' character into the text field
     ImGuiInputTextFlags_CtrlEnterForNewLine = 1 << 11,  // In multi-line mode, allow exiting edition by pressing Enter. Ctrl+Enter to add new line (by default adds new lines with Enter).
@@ -505,7 +505,8 @@ enum ImGuiSelectableFlags_
 {
     // Default: 0
     ImGuiSelectableFlags_DontClosePopups    = 1 << 0,   // Clicking this don't close parent popup window
-    ImGuiSelectableFlags_SpanAllColumns     = 1 << 1    // Selectable frame can span all columns (text will still fit in current column)
+    ImGuiSelectableFlags_SpanAllColumns     = 1 << 1,   // Selectable frame can span all columns (text will still fit in current column)
+    ImGuiSelectableFlags_AllowDoubleClick   = 1 << 2    // Generate press events on double clicks too
 };
 
 // User fill ImGuiIO.KeyMap[] array with indices into the ImGuiIO.KeysDown[512] array
@@ -946,7 +947,7 @@ struct ImGuiStorage
     IMGUI_API void      SetAllInt(int val);
 };
 
-// Shared state of InputText(), passed to callback when a ImGuiInputTextFlags_Callback* flag is used.
+// Shared state of InputText(), passed to callback when a ImGuiInputTextFlags_Callback* flag is used and the corresponding callback is triggered.
 struct ImGuiTextEditCallbackData
 {
     ImGuiInputTextFlags EventFlag;      // One of ImGuiInputTextFlags_Callback* // Read-only
@@ -958,15 +959,17 @@ struct ImGuiTextEditCallbackData
     ImWchar             EventChar;      // Character input                      // Read-write (replace character or set to zero)
 
     // Completion,History,Always events:
+    // If you modify the buffer contents make sure you update 'BufTextLen' and set 'BufDirty' to true.
     ImGuiKey            EventKey;       // Key pressed (Up/Down/TAB)            // Read-only
-    char*               Buf;            // Current text                         // Read-write (pointed data only)
-    int                 BufSize;        //                                      // Read-only
-    bool                BufDirty;       // Must set if you modify Buf directly  // Write
+    char*               Buf;            // Current text buffer                  // Read-write (pointed data only, can't replace the actual pointer)
+    int                 BufTextLen;     // Current text length in bytes         // Read-write
+    int                 BufSize;        // Maximum text length in bytes         // Read-only
+    bool                BufDirty;       // Set if you modify Buf/BufTextLen!!   // Write
     int                 CursorPos;      //                                      // Read-write
     int                 SelectionStart; //                                      // Read-write (== to SelectionEnd when no selection)
     int                 SelectionEnd;   //                                      // Read-write
 
-    // NB: calling those function loses selection.
+    // NB: Helper functions for text manipulation. Calling those function loses selection.
     void    DeleteChars(int pos, int bytes_count);
     void    InsertChars(int pos, const char* text, const char* text_end = NULL);
     bool    HasSelection() const { return SelectionStart != SelectionEnd; }
@@ -1256,7 +1259,7 @@ struct ImFontAtlas
     int                         TexHeight;          // Texture height calculated during Build().
     int                         TexDesiredWidth;    // Texture width desired by user before Build(). Must be a power-of-two. If have many glyphs your graphics API have texture size restrictions you may want to increase texture width to decrease height.
     ImVec2                      TexUvWhitePixel;    // Texture coordinates to a white pixel (part of the TexExtraData block)
-    ImVector<ImFont*>           Fonts;
+    ImVector<ImFont*>           Fonts;              // Hold all the fonts returned by AddFont*. Fonts[0] is the default font upon calling ImGui::NewFrame(), use ImGui::PushFont()/PopFont() to change the current font.
 
     // Private
     ImVector<ImFontConfig>      ConfigData;         // Internal data

3rdparty/ocornut-imgui/imgui_demo.cpp

@@ -392,11 +392,14 @@ void ImGui::ShowTestWindow(bool* p_opened)
         {
             if (ImGui::TreeNode("Basic"))
             {
-                static bool selected[3] = { false, true, false };
+                static bool selected[4] = { false, true, false, false };
                 ImGui::Selectable("1. I am selectable", &selected[0]);
                 ImGui::Selectable("2. I am selectable", &selected[1]);
                 ImGui::Text("3. I am not selectable");
                 ImGui::Selectable("4. I am selectable", &selected[2]);
+                if (ImGui::Selectable("5. I am double clickable", selected[3], ImGuiSelectableFlags_AllowDoubleClick))
+                    if (ImGui::IsMouseDoubleClicked(0))
+                        selected[3] = !selected[3];
                 ImGui::TreePop();
             }
             if (ImGui::TreeNode("Rendering more text into the same block"))
@@ -713,7 +716,9 @@ void ImGui::ShowTestWindow(bool* p_opened)
         static float arr[] = { 0.6f, 0.1f, 1.0f, 0.5f, 0.92f, 0.1f, 0.2f };
         ImGui::PlotLines("Frame Times", arr, IM_ARRAYSIZE(arr));
 
-        static ImVector<float> values; if (values.empty()) { values.resize(90); memset(values.Data, 0, values.Size*sizeof(float)); }
+        // Create a dummy array of contiguous float values to plot
+        // Tip: If your float aren't contiguous but part of a structure, you can pass a pointer to your first float and the sizeof() of your structure in the Stride parameter.
+        static float values[90] = { 0 };
         static int values_offset = 0;
         if (animate)
         {
@@ -722,11 +727,11 @@ void ImGui::ShowTestWindow(bool* p_opened)
             {
                 static float phase = 0.0f;
                 values[values_offset] = cosf(phase);
-                values_offset = (values_offset+1)%values.Size;
+                values_offset = (values_offset+1) % IM_ARRAYSIZE(values);
                 phase += 0.10f*values_offset;
             }
         }
-        ImGui::PlotLines("Lines", values.Data, values.Size, values_offset, "avg 0.0", -1.0f, 1.0f, ImVec2(0,80));
+        ImGui::PlotLines("Lines", values, IM_ARRAYSIZE(values), values_offset, "avg 0.0", -1.0f, 1.0f, ImVec2(0,80));
         ImGui::PlotHistogram("Histogram", arr, IM_ARRAYSIZE(arr), 0, NULL, 0.0f, 1.0f, ImVec2(0,80));
 
         // Use functions to generate output
@@ -1501,10 +1506,14 @@ void ImGui::ShowTestWindow(bool* p_opened)
             ImGui::Text("WantCaptureKeyboard: %s", io.WantCaptureKeyboard ? "true" : "false");
             ImGui::Text("WantTextInput: %s", io.WantTextInput ? "true" : "false");
 
-            ImGui::Button("Hover me\nto enforce\ninputs capture");
+            ImGui::Button("Hovering me sets the\nkeyboard capture flag");
             if (ImGui::IsItemHovered())
-                ImGui::CaptureKeyboardFromApp();
-
+                ImGui::CaptureKeyboardFromApp(true);
+            ImGui::SameLine();
+            ImGui::Button("Holding me clears the\nthe keyboard capture flag");
+            if (ImGui::IsItemActive())
+                ImGui::CaptureKeyboardFromApp(false);
+            
             ImGui::TreePop();
         }
 
@@ -1886,18 +1895,19 @@ struct ExampleAppConsole
         Commands.push_back("HISTORY");
         Commands.push_back("CLEAR");
         Commands.push_back("CLASSIFY");  // "classify" is here to provide an example of "C"+[tab] completing to "CL" and displaying matches.
+        AddLog("Welcome to ImGui!");
     }
     ~ExampleAppConsole()
     {
         ClearLog();
-        for (int i = 0; i < Items.Size; i++)
+        for (int i = 0; i < History.Size; i++)
             free(History[i]);
     }
 
     // Portable helpers
     static int   Stricmp(const char* str1, const char* str2)         { int d; while ((d = toupper(*str2) - toupper(*str1)) == 0 && *str1) { str1++; str2++; } return d; }
     static int   Strnicmp(const char* str1, const char* str2, int n) { int d = 0; while (n > 0 && (d = toupper(*str2) - toupper(*str1)) == 0 && *str1) { str1++; str2++; n--; } return d; }
-    static char* Strdup(const char *str)                             { size_t len = strlen(str) + 1; void* buff = ImGui::MemAlloc(len); return (char*)memcpy(buff, (const void*)str, len); }
+    static char* Strdup(const char *str)                             { size_t len = strlen(str) + 1; void* buff = malloc(len); return (char*)memcpy(buff, (const void*)str, len); }
 
     void    ClearLog()
     {
@@ -2126,9 +2136,8 @@ struct ExampleAppConsole
                 // A better implementation would preserve the data on the current input line along with cursor position.
                 if (prev_history_pos != HistoryPos)
                 {
-                    snprintf(data->Buf, data->BufSize, "%s", (HistoryPos >= 0) ? History[HistoryPos] : "");
+                    data->CursorPos = data->SelectionStart = data->SelectionEnd = data->BufTextLen = (int)snprintf(data->Buf, data->BufSize, "%s", (HistoryPos >= 0) ? History[HistoryPos] : "");
                     data->BufDirty = true;
-                    data->CursorPos = data->SelectionStart = data->SelectionEnd = (int)strlen(data->Buf);
                 }
             }
         }

3rdparty/ocornut-imgui/imgui_internal.h

@@ -152,14 +152,15 @@ inline void operator delete(void*, ImPlacementNewDummy, void*) {}
 
 enum ImGuiButtonFlags_
 {
-    ImGuiButtonFlags_Repeat             = 1 << 0,
-    ImGuiButtonFlags_PressedOnClick     = 1 << 1,   // return pressed on click only (default requires click+release)
-    ImGuiButtonFlags_PressedOnRelease   = 1 << 2,   // return pressed on release only (default requires click+release)
-    ImGuiButtonFlags_FlattenChilds      = 1 << 3,
-    ImGuiButtonFlags_DontClosePopups    = 1 << 4,
-    ImGuiButtonFlags_Disabled           = 1 << 5,
-    ImGuiButtonFlags_AlignTextBaseLine  = 1 << 6,
-    ImGuiButtonFlags_NoKeyModifiers     = 1 << 7
+    ImGuiButtonFlags_Repeat                 = 1 << 0,   // hold to repeat
+    ImGuiButtonFlags_PressedOnClick         = 1 << 1,   // return pressed on click (default requires click+release)
+    ImGuiButtonFlags_PressedOnRelease       = 1 << 2,   // return pressed on release (default requires click+release)
+    ImGuiButtonFlags_PressedOnDoubleClick   = 1 << 3,   // return pressed on double-click (default requires click+release)
+    ImGuiButtonFlags_FlattenChilds          = 1 << 4,   // allow interaction even if a child window is overlapping
+    ImGuiButtonFlags_DontClosePopups        = 1 << 5,   // disable automatically closing parent popup on press
+    ImGuiButtonFlags_Disabled               = 1 << 6,   // disable interaction
+    ImGuiButtonFlags_AlignTextBaseLine      = 1 << 7,   // vertically align button to match text baseline - ButtonEx() only
+    ImGuiButtonFlags_NoKeyModifiers         = 1 << 8    // disable interaction if a key modifier is held
 };
 
 enum ImGuiTreeNodeFlags_
@@ -176,10 +177,10 @@ enum ImGuiSliderFlags_
 enum ImGuiSelectableFlagsPrivate_
 {
     // NB: need to be in sync with last value of ImGuiSelectableFlags_
-    ImGuiSelectableFlags_Menu               = 1 << 2,
-    ImGuiSelectableFlags_MenuItem           = 1 << 3,
-    ImGuiSelectableFlags_Disabled           = 1 << 4,
-    ImGuiSelectableFlags_DrawFillAvailWidth = 1 << 5
+    ImGuiSelectableFlags_Menu               = 1 << 3,
+    ImGuiSelectableFlags_MenuItem           = 1 << 4,
+    ImGuiSelectableFlags_Disabled           = 1 << 5,
+    ImGuiSelectableFlags_DrawFillAvailWidth = 1 << 6
 };
 
 // FIXME: this is in development, not exposed/functional as a generic feature yet.
@@ -434,8 +435,8 @@ struct ImGuiState
     float                   FramerateSecPerFrame[120];          // calculate estimate of framerate for user
     int                     FramerateSecPerFrameIdx;
     float                   FramerateSecPerFrameAccum;
-    bool                    CaptureMouseNextFrame;              // explicit capture via CaptureInputs() sets those flags
-    bool                    CaptureKeyboardNextFrame;
+    int                     CaptureMouseNextFrame;              // explicit capture via CaptureInputs() sets those flags
+    int                     CaptureKeyboardNextFrame;
     char                    TempBuffer[1024*3+1];               // temporary text buffer
 
     ImGuiState()
@@ -501,7 +502,7 @@ struct ImGuiState
         memset(FramerateSecPerFrame, 0, sizeof(FramerateSecPerFrame));
         FramerateSecPerFrameIdx = 0;
         FramerateSecPerFrameAccum = 0.0f;
-        CaptureMouseNextFrame = CaptureKeyboardNextFrame = false;
+        CaptureMouseNextFrame = CaptureKeyboardNextFrame = -1;
         memset(TempBuffer, 0, sizeof(TempBuffer));
     }
 };