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skia / external / github.com / ocornut / imgui / 29ba288ea0a50b3d80d050bfd264c35796680a9d / . / imgui.cpp
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// ImGui library
// See ImGui::ShowTestWindow() for sample code.
// Read 'Programmer guide' below for notes on how to setup ImGui in your codebase.
// Get latest version at https://github.com/ocornut/imgui
/*
MISSION STATEMENT
- easy to use to create code-driven and data-driven tools
- easy to use to create adhoc short-lived tools and long-lived, more elaborate tools
- easy to hack and improve
- minimize screen real-estate usage
- minimize setup and maintainance
- minimize state storage on user side
- portable, minimize dependencies, run on target (consoles, etc.)
- efficient runtime (nb- we do allocate when "growing" content - creating a window / opening a tree node for the first time, etc. - but a typical frame won't allocate anything)
- read about immediate-mode GUI principles @ http://mollyrocket.com/861, http://mollyrocket.com/forums/index.html
Designed for developers and content-creators, not the typical end-user! Some of the weaknesses includes:
- doesn't look fancy, doesn't animate
- limited layout features, intricate layouts are typically crafted in code
- assume ASCII text, using strlen() and [] operators, etc
- occasionally use statically sized buffers for string manipulations - won't crash, but some long text may be clipped
USER GUIDE
- double-click title bar to collapse window
- click upper right corner to close a window, available when 'bool* open' is passed to ImGui::Begin()
- click and drag on lower right corner to resize window
- click and drag on any empty space to move window
- double-click/double-tap on lower right corner grip to auto-fit to content
- TAB/SHIFT+TAB to cycle through keyboard editable fields
- use mouse wheel to scroll
- use CTRL+mouse wheel to zoom window contents (if IO.FontAllowScaling is true)
- CTRL+Click on a slider to input value as text
- text editor:
- Hold SHIFT or use mouse to select text.
- CTRL+Left/Right to word jump
- CTRL+Shift+Left/Right to select words
- CTRL+A our Double-Click to select all
- CTRL+X,CTRL+C,CTRL+V to use OS clipboard
- CTRL+Z,CTRL+Y to undo/redo
- ESCAPE to revert text to its original value
- You can apply arithmetic operators +,*,/ on numerical values. Use +- to subtract (because - would set a negative value!)
PROGRAMMER GUIDE
- your code creates the UI, if your code doesn't run the UI is gone! == dynamic UI, no construction step, less data retention on your side, no state duplication, less sync, less errors.
- see ImGui::ShowTestWindow() for user-side sample code
- getting started:
- initialisation: call ImGui::GetIO() and fill the 'Settings' data.
- every frame:
1/ in your mainloop or right after you got your keyboard/mouse info, call ImGui::GetIO() and fill the 'Input' data, then call ImGui::NewFrame().
2/ use any ImGui function you want between NewFrame() and Render()
3/ ImGui::Render() to render all the accumulated command-lists. it will cack your RenderDrawListFn handler set in the IO structure.
- all rendering information are stored into command-lists until ImGui::Render() is called.
- effectively it means you can create widgets at any time in your code, regardless of "update" vs "render" considerations.
- a typical application skeleton may be:
// Application init
// TODO: Fill all 'Settings' fields of the io structure
ImGuiIO& io = ImGui::GetIO();
io.DisplaySize.x = 1920.0f;
io.DisplaySize.y = 1280.0f;
io.DeltaTime = 1.0f/60.0f;
io.IniFilename = "imgui.ini";
// Application mainloop
while (true)
{
// 1/ get low-level input
// e.g. on Win32, GetKeyboardState(), or poll your events, etc.
// 2/ TODO: Fill all 'Input' fields of io structure and call NewFrame
ImGuiIO& io = ImGui::GetIO();
io.MousePos = ...
io.KeysDown[i] = ...
ImGui::NewFrame();
// 3/ most of your application code here - you can use any of ImGui::* functions between NewFrame() and Render() calls
GameUpdate();
GameRender();
// 4/ render & swap video buffers
ImGui::Render();
// swap video buffer, etc.
}
- some widgets carry state and requires an unique ID to do so.
- unique ID are typically derived from a string label, an indice or a pointer.
- use PushID/PopID to easily create scopes and avoid ID conflicts. A Window is also an implicit scope.
- when creating trees, ID are particularly important because you want to preserve the opened/closed state of tree nodes.
depending on your use cases you may want to use strings, indices or pointers as ID. experiment and see what makes more sense!
e.g. When displaying a single object, using a static string as ID will preserve your node open/closed state when the targetted object change
e.g. When displaying a list of objects, using indices or pointers as ID will preserve the node open/closed state per object
- when passing a label you can optionally specify extra unique ID information within the same string using "##". This helps solving the simpler collision cases.
e.g. "Label" display "Label" and uses "Label" as ID
e.g. "Label##Foobar" display "Label" and uses "Label##Foobar" as ID
e.g. "##Foobar" display an empty label and uses "##Foobar" as ID
- if you want to use a different font than the default
- create bitmap font data using BMFont. allocate ImGui::GetIO().Font and use ->LoadFromFile()/LoadFromMemory(), set ImGui::GetIO().FontHeight
- load your texture yourself. texture *MUST* have white pixel at UV coordinate 'IMGUI_FONT_TEX_UV_FOR_WHITE' (you can #define it in imconfig.h), this is used by solid objects.
- tip: the construct 'if (IMGUI_ONCE_UPON_A_FRAME)' will evaluate to true only once a frame, you can use it to add custom UI in the middle of a deep nested inner loop in your code.
- tip: you can call Render() multiple times (e.g for VR renders), up to you to communicate the extra state to your RenderDrawListFn function.
- tip: you can create widgets without a Begin/End block, they will go in an implicit window called "Debug"
ISSUES AND TODO-LIST
- misc: merge ImVec4 / ImGuiAabb, they are essentially duplicate containers
- window: autofit is losing its purpose when user relies on any dynamic layout (window width multiplier, column). maybe just discard autofit?
- window: support horizontal scroll
- window: fix resize grip scaling along with Rounding style setting
- widgets: switching from "widget-label" to "label-widget" would make it more convenient to integrate widgets in trees
- widgets: clip text? hover clipped text shows it in a tooltip or in-place overlay
- main: make IsHovered() 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: make IsHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- scrollbar: use relative mouse movement when first-clicking inside of scroll grab box.
- scrollbar: make the grab visible and a minimum size for long scroll regions
- input number: optional range min/max
- input number: holding [-]/[+] buttons should increase the step non-linearly
- input number: use mouse wheel to step up/down
- layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 horrible layout code. item width should include frame padding, then we can have a generic horizontal layout helper.
- columns: declare column set (each column: fixed size, %, fill, distribute default size among fills)
- columns: columns header to act as button (~sort op) and allow resize/reorder
- columns: user specify columns size
- combo: turn child handling code into popup helper
- list selection, concept of a selectable "block" (that can be multiple widgets)
- menubar, menus
- plot: make it easier for user to draw into the graph (e.g: draw basis, highlight certain pointsm, 2d plots, multiple plots)
- plot: "smooth" automatic scale, user give an input 0.0(full user scale) 1.0(full derived from value)
- plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
- file selection widget -> build the tool in our codebase to improve model-dialog idioms (may or not lead to ImGui changes)
- slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- slider: initial absolute click is unprecise. change to relative movement slider? hide mouse cursor, allow more precise input using less screen-space.
- text edit: centered text for slider or input text to it matches typical positionning.
- text edit: flag to disable live update of the user buffer.
- text edit: field resize behaviour - field could stretch when being edited? hover tooltip shows more text?
- text edit: pasting text into a number box should filter the characters the same way direct input does
- text edit: allow code to catch user pressing Return (perhaps through disable live edit? so only Return apply the final value, also allow catching Return if value didn't changed)
- settings: write more decent code to allow saving/loading new fields
- settings: api for per-tool simple persistant data (bool,int,float) in .ini file
- log: be able to right-click and log a window or tree-node into tty/file/clipboard?
- filters: set a current filter that tree node can automatically query to hide themselves
- filters: handle wildcards (with implicit leading/trailing *), regexps
- shortcuts: add a shortcut api, e.g. parse "&Save" and/or "Save (CTRL+S)", pass in to widgets or provide simple ways to use (button=activate, input=focus)
- input: keyboard: full keyboard navigation and focus.
- input: support trackpad style scrolling & slider edit.
- misc: not thread-safe
- misc: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- optimisation/render: use indexed rendering
- optimisation/render: move clip-rect to vertex data? would allow merging all commands
- optimisation/render: merge command-list of all windows into one command-list?
- optimisation/render: font exported by bmfont is not tight fit on vertical axis, incur unneeded pixel-shading cost.
- optimisation: turn some the various stack vectors into statically-sized arrays
- optimisation: better clipping for multi-component widgets
- optimisation: specialize for height based clipping first (assume widgets never go up + height tests before width tests?)
*/
#include "imgui.h"
#include <ctype.h> // toupper
#include <math.h> // sqrt
#include <stdint.h> // intptr_t
#include <stdio.h> // vsnprintf
#include <string.h> // memset
#ifdef _MSC_VER
#pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
#endif
//-------------------------------------------------------------------------
// Forward Declarations
//-------------------------------------------------------------------------
namespace ImGui
{
static bool ButtonBehaviour(const ImGuiAabb& bb, const ImGuiID& id, bool* out_hovered, bool* out_held, bool allow_key_modifiers, bool repeat = false);
static void RenderFrame(ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, bool border = true, float rounding = 0.0f);
static void RenderText(ImVec2 pos, const char* text, const char* text_end = NULL, const bool hide_text_after_hash = true);
static void LogText(const ImVec2& ref_pos, const char* text, const char* text_end = NULL);
static void ItemSize(ImVec2 size, ImVec2* adjust_start_offset = NULL);
static void ItemSize(const ImGuiAabb& aabb, ImVec2* adjust_start_offset = NULL);
static void PushColumnClipRect(int column_index = -1);
static bool IsClipped(const ImGuiAabb& aabb);
static bool ClipAdvance(const ImGuiAabb& aabb);
static bool IsMouseHoveringBox(const ImGuiAabb& box);
static bool IsKeyPressedMap(ImGuiKey key, bool repeat = true);
static bool CloseWindowButton(bool* open = NULL);
static void FocusWindow(ImGuiWindow* window);
static ImGuiWindow* FindWindow(const char* name);
static ImGuiWindow* FindHoveredWindow(ImVec2 pos, bool excluding_childs);
}; // namespace ImGui
//-----------------------------------------------------------------------------
// Platform dependant default implementations
//-----------------------------------------------------------------------------
static const char* GetClipboardTextFn_DefaultImpl();
static void SetClipboardTextFn_DefaultImpl(const char* text, const char* text_end);
//-----------------------------------------------------------------------------
// User facing structures
//-----------------------------------------------------------------------------
ImGuiStyle::ImGuiStyle()
{
Alpha = 1.0f; // Global alpha applies to everything in ImGui
WindowPadding = ImVec2(8,8); // Padding within a window
WindowMinSize = ImVec2(48,48); // Minimum window size
FramePadding = ImVec2(5,4); // Padding within a framed rectangle (used by most widgets)
ItemSpacing = ImVec2(10,5); // Horizontal and vertical spacing between widgets/lines
ItemInnerSpacing = ImVec2(5,5); // Horizontal and vertical spacing between within elements of a composed widget (e.g. a slider and its label)
TouchExtraPadding = ImVec2(0,0); // Expand bounding box for touch-based system where touch position is not accurate enough (unnecessary for mouse inputs). Unfortunately we don't sort widgets so priority on overlap will always be given to the first widget running. So dont grow this too much!
AutoFitPadding = ImVec2(8,8); // Extra space after auto-fit (double-clicking on resize grip)
WindowFillAlphaDefault = 0.70f; // Default alpha of window background, if not specified in ImGui::Begin()
WindowRounding = 10.0f; // Radius of window corners rounding. Set to 0.0f to have rectangular windows
TreeNodeSpacing = 22.0f; // Horizontal spacing when entering a tree node
ColumnsMinSpacing = 6.0f; // Minimum horizontal spacing between two columns
ScrollBarWidth = 16.0f; // Width of the vertical scroll bar
Colors[ImGuiCol_Text] = ImVec4(0.90f, 0.90f, 0.90f, 1.00f);
Colors[ImGuiCol_WindowBg] = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
Colors[ImGuiCol_Border] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
Colors[ImGuiCol_BorderShadow] = ImVec4(0.00f, 0.00f, 0.00f, 0.60f);
Colors[ImGuiCol_FrameBg] = ImVec4(0.80f, 0.80f, 0.80f, 0.30f); // Background of checkbox, radio button, plot, slider, text input
Colors[ImGuiCol_TitleBg] = ImVec4(0.50f, 0.50f, 1.00f, 0.45f);
Colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.40f, 0.40f, 0.80f, 0.20f);
Colors[ImGuiCol_ScrollbarBg] = ImVec4(0.40f, 0.40f, 0.80f, 0.15f);
Colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.40f, 0.40f, 0.80f, 0.30f);
Colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.40f, 0.40f, 0.80f, 0.40f);
Colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.80f, 0.50f, 0.50f, 0.40f);
Colors[ImGuiCol_ComboBg] = ImVec4(0.20f, 0.20f, 0.20f, 0.99f);
Colors[ImGuiCol_CheckHovered] = ImVec4(0.60f, 0.40f, 0.40f, 0.45f);
Colors[ImGuiCol_CheckActive] = ImVec4(0.90f, 0.90f, 0.90f, 0.50f);
Colors[ImGuiCol_SliderGrab] = ImVec4(1.00f, 1.00f, 1.00f, 0.30f);
Colors[ImGuiCol_SliderGrabActive] = ImVec4(0.80f, 0.50f, 0.50f, 1.00f);
Colors[ImGuiCol_Button] = ImVec4(0.67f, 0.40f, 0.40f, 0.60f);
Colors[ImGuiCol_ButtonHovered] = ImVec4(0.67f, 0.40f, 0.40f, 1.00f);
Colors[ImGuiCol_ButtonActive] = ImVec4(0.80f, 0.50f, 0.50f, 1.00f);
Colors[ImGuiCol_Header] = ImVec4(0.40f, 0.40f, 0.90f, 0.45f);
Colors[ImGuiCol_HeaderHovered] = ImVec4(0.45f, 0.45f, 0.90f, 0.80f);
Colors[ImGuiCol_HeaderActive] = ImVec4(0.60f, 0.60f, 0.80f, 1.00f);
Colors[ImGuiCol_Column] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
Colors[ImGuiCol_ColumnHovered] = ImVec4(0.60f, 0.40f, 0.40f, 1.00f);
Colors[ImGuiCol_ColumnActive] = ImVec4(0.80f, 0.50f, 0.50f, 1.00f);
Colors[ImGuiCol_ResizeGrip] = ImVec4(1.00f, 1.00f, 1.00f, 0.30f);
Colors[ImGuiCol_ResizeGripHovered] = ImVec4(1.00f, 1.00f, 1.00f, 0.60f);
Colors[ImGuiCol_ResizeGripActive] = ImVec4(1.00f, 1.00f, 1.00f, 0.90f);
Colors[ImGuiCol_CloseButton] = ImVec4(0.50f, 0.50f, 0.90f, 0.50f);
Colors[ImGuiCol_CloseButtonHovered] = ImVec4(0.70f, 0.70f, 0.90f, 0.60f);
Colors[ImGuiCol_CloseButtonActive] = ImVec4(0.70f, 0.70f, 0.70f, 1.00f);
Colors[ImGuiCol_PlotLines] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
Colors[ImGuiCol_PlotLinesHovered] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
Colors[ImGuiCol_PlotHistogram] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
Colors[ImGuiCol_PlotHistogramHovered] = ImVec4(1.00f, 0.60f, 0.00f, 1.00f);
Colors[ImGuiCol_TextSelectedBg] = ImVec4(0.00f, 0.00f, 1.00f, 0.35f);
Colors[ImGuiCol_TooltipBg] = ImVec4(0.05f, 0.05f, 0.10f, 0.90f);
}
ImGuiIO::ImGuiIO()
{
memset(this, 0, sizeof(*this));
DeltaTime = 1.0f/60.0f;
IniSavingRate = 5.0f;
IniFilename = "imgui.ini";
LogFilename = "imgui_log.txt";
Font = NULL;
FontAllowScaling = false;
PixelCenterOffset = 0.5f;
MousePos = ImVec2(-1,-1);
MousePosPrev = ImVec2(-1,-1);
MouseDoubleClickTime = 0.30f;
MouseDoubleClickMaxDist = 6.0f;
// Platform dependant default implementations
GetClipboardTextFn = GetClipboardTextFn_DefaultImpl;
SetClipboardTextFn = SetClipboardTextFn_DefaultImpl;
}
// Pass in translated ASCII characters for text input.
// - with glfw you can get those from the callback set in glfwSetCharCallback()
// - on Windows you can get those using ToAscii+keyboard state, or via the VM_CHAR message
void ImGuiIO::AddInputCharacter(char c)
{
const size_t n = strlen(InputCharacters);
if (n < sizeof(InputCharacters) / sizeof(InputCharacters[0]))
{
InputCharacters[n] = c;
InputCharacters[n+1] = 0;
}
}
//-----------------------------------------------------------------------------
// Helpers
//-----------------------------------------------------------------------------
#define IM_ARRAYSIZE(_ARR) ((int)(sizeof(_ARR)/sizeof(*_ARR)))
#undef PI
const float PI = 3.14159265358979323846f;
#ifdef INT_MAX
#define IM_INT_MAX INT_MAX
#else
#define IM_INT_MAX 2147483647
#endif
// Math bits
// We are keeping those static in the .cpp file so as not to leak them outside, in the case the user has implicit cast operators between ImVec2 and its own types.
static inline ImVec2 operator*(const ImVec2& lhs, const float rhs) { return ImVec2(lhs.x*rhs, lhs.y*rhs); }
static inline ImVec2 operator/(const ImVec2& lhs, const float rhs) { return ImVec2(lhs.x/rhs, lhs.y/rhs); }
static inline ImVec2 operator+(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(lhs.x+rhs.x, lhs.y+rhs.y); }
static inline ImVec2 operator-(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(lhs.x-rhs.x, lhs.y-rhs.y); }
static inline ImVec2 operator*(const ImVec2& lhs, const ImVec2 rhs) { return ImVec2(lhs.x*rhs.x, lhs.y*rhs.y); }
static inline ImVec2 operator/(const ImVec2& lhs, const ImVec2 rhs) { return ImVec2(lhs.x/rhs.x, lhs.y/rhs.y); }
static inline ImVec2& operator+=(ImVec2& lhs, const ImVec2& rhs) { lhs.x += rhs.x; lhs.y += rhs.y; return lhs; }
static inline ImVec2& operator-=(ImVec2& lhs, const ImVec2& rhs) { lhs.x -= rhs.x; lhs.y -= rhs.y; return lhs; }
static inline ImVec2& operator*=(ImVec2& lhs, const float rhs) { lhs.x *= rhs; lhs.y *= rhs; return lhs; }
static inline ImVec2& operator/=(ImVec2& lhs, const float rhs) { lhs.x /= rhs; lhs.y /= rhs; return lhs; }
static inline int ImMin(int lhs, int rhs) { return lhs < rhs ? lhs : rhs; }
static inline int ImMax(int lhs, int rhs) { return lhs >= rhs ? lhs : rhs; }
static inline float ImMin(float lhs, float rhs) { return lhs < rhs ? lhs : rhs; }
static inline float ImMax(float lhs, float rhs) { return lhs >= rhs ? lhs : rhs; }
static inline ImVec2 ImMin(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(ImMin(lhs.x,rhs.x), ImMin(lhs.y,rhs.y)); }
static inline ImVec2 ImMax(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(ImMax(lhs.x,rhs.x), ImMax(lhs.y,rhs.y)); }
static inline float ImClamp(float f, float mn, float mx) { return (f < mn) ? mn : (f > mx) ? mx : f; }
static inline ImVec2 ImClamp(const ImVec2& f, const ImVec2& mn, ImVec2 mx) { return ImVec2(ImClamp(f.x,mn.x,mx.x), ImClamp(f.y,mn.y,mx.y)); }
static inline float ImSaturate(float f) { return (f < 0.0f) ? 0.0f : (f > 1.0f) ? 1.0f : f; }
static inline float ImLerp(float a, float b, float t) { return a + (b - a) * t; }
static inline ImVec2 ImLerp(const ImVec2& a, const ImVec2& b, float t) { return a + (b - a) * t; }
static inline ImVec2 ImLerp(const ImVec2& a, const ImVec2& b, const ImVec2& t) { return ImVec2(a.x + (b.x - a.x) * t.x, a.y + (b.y - a.y) * t.y); }
static inline float ImLength(const ImVec2& lhs) { return sqrt(lhs.x*lhs.x + lhs.y*lhs.y); }
static int ImStricmp(const char* str1, const char* str2)
{
int d;
while ((d = toupper(*str2) - toupper(*str1)) == 0 && *str1) { str1++; str2++; }
return d;
}
static const char* ImStristr(const char* haystack, const char* needle, const char* needle_end)
{
if (!needle_end)
needle_end = needle + strlen(needle);
const char un0 = (char)toupper(*needle);
while (*haystack)
{
if (toupper(*haystack) == un0)
{
const char* b = needle + 1;
for (const char* a = haystack + 1; b < needle_end; a++, b++)
if (toupper(*a) != toupper(*b))
break;
if (b == needle_end)
return haystack;
}
haystack++;
}
return NULL;
}
static ImU32 crc32(const void* data, size_t data_size, ImU32 seed = 0)
{
static ImU32 crc32_lut[256] = { 0 };
if (!crc32_lut[1])
{
const ImU32 polynomial = 0xEDB88320;
for (ImU32 i = 0; i < 256; i++)
{
ImU32 crc = i;
for (ImU32 j = 0; j < 8; j++)
crc = (crc >> 1) ^ (ImU32(-int(crc & 1)) & polynomial);
crc32_lut[i] = crc;
}
}
ImU32 crc = ~seed;
const unsigned char* current = (const unsigned char*)data;
while (data_size--)
crc = (crc >> 8) ^ crc32_lut[(crc & 0xFF) ^ *current++];
return ~crc;
}
static size_t ImFormatString(char* buf, size_t buf_size, const char* fmt, ...)
{
va_list args;
va_start(args, fmt);
int w = vsnprintf(buf, buf_size, fmt, args);
va_end(args);
buf[buf_size-1] = 0;
return (w == -1) ? buf_size : (size_t)w;
}
static size_t ImFormatStringV(char* buf, size_t buf_size, const char* fmt, va_list args)
{
int w = vsnprintf(buf, buf_size, fmt, args);
buf[buf_size-1] = 0;
return (w == -1) ? buf_size : (size_t)w;
}
static ImU32 ImConvertColorFloat4ToU32(const ImVec4& in)
{
ImU32 out = ((ImU32)(ImSaturate(in.x)*255.f));
out |= ((ImU32)(ImSaturate(in.y)*255.f) << 8);
out |= ((ImU32)(ImSaturate(in.z)*255.f) << 16);
out |= ((ImU32)(ImSaturate(in.w)*255.f) << 24);
return out;
}
// Convert rgb floats ([0-1],[0-1],[0-1]) to hsv floats ([0-1],[0-1],[0-1]), from Foley & van Dam p592
// Optimized http://lolengine.net/blog/2013/01/13/fast-rgb-to-hsv
static void ImConvertColorRGBtoHSV(float r, float g, float b, float& out_h, float& out_s, float& out_v)
{
float K = 0.f;
if (g < b)
{
const float tmp = g; g = b; b = tmp;
K = -1.f;
}
if (r < g)
{
const float tmp = r; r = g; g = tmp;
K = -2.f / 6.f - K;
}
const float chroma = r - (g < b ? g : b);
out_h = fabsf(K + (g - b) / (6.f * chroma + 1e-20f));
out_s = chroma / (r + 1e-20f);
out_v = r;
}
// Convert hsv floats ([0-1],[0-1],[0-1]) to rgb floats ([0-1],[0-1],[0-1]), from Foley & van Dam p593
// also http://en.wikipedia.org/wiki/HSL_and_HSV
static void ImConvertColorHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b)
{
if (s == 0.0f)
{
// gray
out_r = out_g = out_b = v;
return;
}
h = fmodf(h, 1.0f) / (60.0f/360.0f);
int i = (int)h;
float f = h - (float)i;
float p = v * (1.0f - s);
float q = v * (1.0f - s * f);
float t = v * (1.0f - s * (1.0f - f));
switch (i)
{
case 0: out_r = v; out_g = t; out_b = p; break;
case 1: out_r = q; out_g = v; out_b = p; break;
case 2: out_r = p; out_g = v; out_b = t; break;
case 3: out_r = p; out_g = q; out_b = v; break;
case 4: out_r = t; out_g = p; out_b = v; break;
case 5: default: out_r = v; out_g = p; out_b = q; break;
}
}
//-----------------------------------------------------------------------------
struct ImGuiColMod // Color/style modifier, backup of modified data so we can restore it
{
ImGuiCol Col;
ImVec4 PreviousValue;
};
struct ImGuiAabb // 2D axis aligned bounding-box
{
ImVec2 Min;
ImVec2 Max;
ImGuiAabb() { Min = ImVec2(FLT_MAX,FLT_MAX); Max = ImVec2(-FLT_MAX,-FLT_MAX); }
ImGuiAabb(const ImVec2& min, const ImVec2& max) { Min = min; Max = max; }
ImGuiAabb(const ImVec4& v) { Min.x = v.x; Min.y = v.y; Max.x = v.z; Max.y = v.w; }
ImGuiAabb(float x1, float y1, float x2, float y2) { Min.x = x1; Min.y = y1; Max.x = x2; Max.y = y2; }
ImVec2 GetCenter() const { return Min + (Max-Min)*0.5f; }
ImVec2 GetSize() const { return Max-Min; }
float GetWidth() const { return (Max-Min).x; }
float GetHeight() const { return (Max-Min).y; }
ImVec2 GetTL() const { return Min; }
ImVec2 GetTR() const { return ImVec2(Max.x,Min.y); }
ImVec2 GetBL() const { return ImVec2(Min.x,Max.y); }
ImVec2 GetBR() const { return Max; }
bool Contains(ImVec2 p) const { return p.x >= Min.x && p.y >= Min.y && p.x <= Max.x && p.y <= Max.y; }
bool Contains(const ImGuiAabb& r) const { return r.Min.x >= Min.x && r.Min.y >= Min.y && r.Max.x <= Max.x && r.Max.y <= Max.y; }
bool Overlaps(const ImGuiAabb& r) const { return r.Min.y <= Max.y && r.Max.y >= Min.y && r.Min.x <= Max.x && r.Max.x >= Min.x; }
void Expand(ImVec2 sz) { Min -= sz; Max += sz; }
void Clip(const ImGuiAabb& clip) { Min.x = ImMax(Min.x, clip.Min.x); Min.y = ImMax(Min.y, clip.Min.y); Max.x = ImMin(Max.x, clip.Max.x); Max.y = ImMin(Max.y, clip.Max.y); }
};
// Temporary per-window data, reset at the beginning of the frame
struct ImGuiDrawContext
{
ImVec2 CursorPos;
ImVec2 CursorPosPrevLine;
ImVec2 CursorStartPos;
float CurrentLineHeight;
float PrevLineHeight;
float LogLineHeight;
int TreeDepth;
ImGuiAabb LastItemAabb;
bool LastItemHovered;
ImVector<ImGuiWindow*> ChildWindows;
ImVector<bool> AllowKeyboardFocus;
ImVector<float> ItemWidth;
ImVector<ImGuiColMod> ColorModifiers;
ImGuiColorEditMode ColorEditMode;
ImGuiStorage* StateStorage;
int OpenNextNode;
float ColumnStartX;
int ColumnCurrent;
int ColumnsCount;
bool ColumnsShowBorders;
ImVec2 ColumnsStartCursorPos;
ImGuiID ColumnsSetID;
ImGuiDrawContext()
{
CursorPos = CursorPosPrevLine = CursorStartPos = ImVec2(0.0f, 0.0f);
CurrentLineHeight = PrevLineHeight = 0.0f;
LogLineHeight = -1.0f;
TreeDepth = 0;
LastItemAabb = ImGuiAabb(0.0f,0.0f,0.0f,0.0f);
LastItemHovered = false;
StateStorage = NULL;
OpenNextNode = -1;
ColumnStartX = 0.0f;
ColumnCurrent = 0;
ColumnsCount = 1;
ColumnsShowBorders = true;
ColumnsStartCursorPos = ImVec2(0,0);
}
};
struct ImGuiTextEditState;
#define STB_TEXTEDIT_STRING ImGuiTextEditState
#define STB_TEXTEDIT_CHARTYPE char
#include "stb_textedit.h"
// State of the currently focused/edited text input box
struct ImGuiTextEditState
{
char Text[1024]; // edit buffer, we need to persist but can't guarantee the persistence of the user-provided buffer. so own buffer.
char InitialText[1024]; // backup of end-user buffer at focusing time, to ESC key can do a revert. Also used for arithmetic operations (but could use a pre-parsed float there).
size_t BufSize; // end-user buffer size, <= 1024 (or increase above)
float Width; // widget width
float ScrollX;
STB_TexteditState StbState;
float CursorAnim;
bool SelectedAllMouseLock;
ImFont Font;
float FontSize;
ImGuiTextEditState() { memset(this, 0, sizeof(*this)); }
void CursorAnimReset() { CursorAnim = -0.30f; } // After a user-input the cursor stays on for a while without blinking
bool CursorIsVisible() const { return CursorAnim <= 0.0f || fmodf(CursorAnim, 1.20f) <= 0.80f; } // Blinking
bool HasSelection() const { return StbState.select_start != StbState.select_end; }
void SelectAll() { StbState.select_start = 0; StbState.select_end = (int)strlen(Text); StbState.cursor = StbState.select_end; StbState.has_preferred_x = false; }
void OnKeyboardPressed(int key);
void UpdateScrollOffset();
ImVec2 CalcDisplayOffsetFromCharIdx(int i) const;
// Static functions because they are used to render non-focused instances of a text input box
static const char* GetTextPointerClipped(ImFont font, float font_size, const char* text, float width, ImVec2* out_text_size = NULL);
static void RenderTextScrolledClipped(ImFont font, float font_size, const char* text, ImVec2 pos_base, float width, float scroll_x);
};
struct ImGuiIniData
{
char* Name;
ImVec2 Pos;
ImVec2 Size;
bool Collapsed;
ImGuiIniData() { memset(this, 0, sizeof(*this)); }
~ImGuiIniData() { if (Name) { free(Name); Name = NULL; } }
};
struct ImGuiState
{
bool Initialized;
ImGuiIO IO;
ImGuiStyle Style;
float Time;
int FrameCount;
int FrameCountRendered;
ImVector<ImGuiWindow*> Windows;
ImGuiWindow* CurrentWindow; // Being drawn into
ImVector<ImGuiWindow*> CurrentWindowStack;
ImGuiWindow* FocusedWindow; // Will catch keyboard inputs
ImGuiWindow* HoveredWindow; // Will catch mouse inputs
ImGuiWindow* HoveredWindowExcludingChilds; // Will catch mouse inputs (for focus/move only)
ImGuiID HoveredId;
ImGuiID ActiveId;
ImGuiID ActiveIdPreviousFrame;
bool ActiveIdIsAlive;
float SettingsDirtyTimer;
ImVector<ImGuiIniData*> Settings;
ImVec2 NewWindowDefaultPos;
// Render
ImVector<ImDrawList*> RenderDrawLists;
// Widget state
ImGuiTextEditState InputTextState;
ImGuiID SliderAsInputTextId;
ImGuiStorage ColorEditModeStorage; // for user selection
ImGuiID ActiveComboID;
char Tooltip[1024];
char* PrivateClipboard; // if no custom clipboard handler is defined
// Logging
bool LogEnabled;
FILE* LogFile;
ImGuiTextBuffer LogClipboard;
int LogAutoExpandMaxDepth;
ImGuiState()
{
Initialized = false;
Time = 0.0f;
FrameCount = 0;
FrameCountRendered = -1;
CurrentWindow = NULL;
FocusedWindow = NULL;
HoveredWindow = NULL;
HoveredWindowExcludingChilds = NULL;
ActiveIdIsAlive = false;
SettingsDirtyTimer = 0.0f;
NewWindowDefaultPos = ImVec2(60, 60);
SliderAsInputTextId = 0;
ActiveComboID = 0;
memset(Tooltip, 0, sizeof(Tooltip));
PrivateClipboard = NULL;
LogEnabled = false;
LogFile = NULL;
LogAutoExpandMaxDepth = 2;
}
};
static ImGuiState GImGui;
struct ImGuiWindow
{
char* Name;
ImGuiID ID;
ImGuiWindowFlags Flags;
ImVec2 PosFloat;
ImVec2 Pos; // Position rounded-up to nearest pixel
ImVec2 Size; // Current size (==SizeFull or collapsed title bar size)
ImVec2 SizeFull; // Size when non collapsed
ImVec2 SizeContentsFit; // Size of contents (extents reach by the drawing cursor) - may not fit within Size.
float ScrollY;
float NextScrollY;
bool ScrollbarY;
bool Visible; // Set to true on Begin()
bool Accessed; // Set to true when any widget access the current window
bool Collapsed; // Set when collapsing window to become only title-bar
bool SkipItems; // == Visible && !Collapsed
int AutoFitFrames;
ImGuiDrawContext DC;
ImVector<ImGuiID> IDStack;
ImVector<ImVec4> ClipRectStack;
int LastFrameDrawn;
float ItemWidthDefault;
ImGuiStorage StateStorage;
float FontScale;
int FocusIdxCounter; // Start at -1 and increase as assigned via FocusItemRegister()
int FocusIdxRequestCurrent; // Item being requested for focus, rely on layout to be stable between the frame pressing TAB and the next frame
int FocusIdxRequestNext; // Item being requested for focus, for next update
ImDrawList* DrawList;
public:
ImGuiWindow(const char* name, ImVec2 default_pos, ImVec2 default_size);
~ImGuiWindow();
ImGuiID GetID(const char* str);
ImGuiID GetID(const void* ptr);
void AddToRenderList();
bool FocusItemRegister(bool is_active, int* out_idx = NULL); // Return TRUE if focus is requested
void FocusItemUnregister();
ImGuiAabb Aabb() const { return ImGuiAabb(Pos, Pos+Size); }
ImFont Font() const { return GImGui.IO.Font; }
float FontSize() const { return GImGui.IO.FontHeight * FontScale; }
ImVec2 CursorPos() const { return DC.CursorPos; }
float TitleBarHeight() const { return (Flags & ImGuiWindowFlags_NoTitleBar) ? 0 : FontSize() + GImGui.Style.FramePadding.y * 2.0f; }
ImGuiAabb TitleBarAabb() const { return ImGuiAabb(Pos, Pos + ImVec2(SizeFull.x, TitleBarHeight())); }
ImVec2 WindowPadding() const { return ((Flags & ImGuiWindowFlags_ChildWindow) && !(Flags & ImGuiWindowFlags_ShowBorders)) ? ImVec2(1,1) : GImGui.Style.WindowPadding; }
ImU32 Color(ImGuiCol idx, float a=1.f) const { ImVec4 c = GImGui.Style.Colors[idx]; c.w *= GImGui.Style.Alpha * a; return ImConvertColorFloat4ToU32(c); }
ImU32 Color(const ImVec4& col) const { ImVec4 c = col; c.w *= GImGui.Style.Alpha; return ImConvertColorFloat4ToU32(c); }
};
static ImGuiWindow* GetCurrentWindow()
{
IM_ASSERT(GImGui.CurrentWindow != NULL); // ImGui::NewFrame() hasn't been called yet?
GImGui.CurrentWindow->Accessed = true;
return GImGui.CurrentWindow;
}
static void RegisterAliveId(const ImGuiID& id)
{
if (GImGui.ActiveId == id)
GImGui.ActiveIdIsAlive = true;
}
//-----------------------------------------------------------------------------
void ImGuiStorage::Clear()
{
Data.clear();
}
// std::lower_bound but without the bullshit
static ImVector<ImGuiStorage::Pair>::iterator LowerBound(ImVector<ImGuiStorage::Pair>& data, ImU32 key)
{
ImVector<ImGuiStorage::Pair>::iterator first = data.begin();
ImVector<ImGuiStorage::Pair>::iterator last = data.end();
int count = (int)(last - first);
while (count > 0)
{
int count2 = count / 2;
ImVector<ImGuiStorage::Pair>::iterator mid = first + count2;
if (mid->key < key)
{
first = ++mid;
count -= count2 + 1;
}
else
{
count = count2;
}
}
return first;
}
int* ImGuiStorage::Find(ImU32 key)
{
ImVector<Pair>::iterator it = LowerBound(Data, key);
if (it == Data.end())
return NULL;
if (it->key != key)
return NULL;
return &it->val;
}
int ImGuiStorage::GetInt(ImU32 key, int default_val)
{
int* pval = Find(key);
if (!pval)
return default_val;
return *pval;
}
// FIXME-OPT: We are wasting time because all SetInt() are preceeded by GetInt() calls so we should have the result from lower_bound already in place.
// However we only use SetInt() on explicit user action (so that's maximum once a frame) so the optimisation isn't much needed.
void ImGuiStorage::SetInt(ImU32 key, int val)
{
ImVector<Pair>::iterator it = LowerBound(Data, key);
if (it != Data.end() && it->key == key)
{
it->val = val;
}
else
{
Pair pair_key;
pair_key.key = key;
pair_key.val = val;
Data.insert(it, pair_key);
}
}
void ImGuiStorage::SetAllInt(int v)
{
for (size_t i = 0; i < Data.size(); i++)
Data[i].val = v;
}
//-----------------------------------------------------------------------------
ImGuiTextFilter::ImGuiTextFilter()
{
InputBuf[0] = 0;
CountGrep = 0;
}
void ImGuiTextFilter::Draw(const char* label, float width)
{
ImGuiWindow* window = GetCurrentWindow();
if (width < 0.0f)
{
ImVec2 label_size = ImGui::CalcTextSize(label, NULL);
width = ImMax(window->Pos.x + ImGui::GetWindowContentRegionMax().x - window->DC.CursorPos.x - (label_size.x + GImGui.Style.ItemSpacing.x*4), 10.0f);
}
ImGui::PushItemWidth(width);
ImGui::InputText(label, InputBuf, IM_ARRAYSIZE(InputBuf));
ImGui::PopItemWidth();
Build();
}
void ImGuiTextFilter::TextRange::split(char separator, ImVector<TextRange>& out)
{
out.resize(0);
const char* wb = b;
const char* we = wb;
while (we < e)
{
if (*we == separator)
{
out.push_back(TextRange(wb, we));
wb = we + 1;
}
we++;
}
if (wb != we)
out.push_back(TextRange(wb, we));
}
void ImGuiTextFilter::Build()
{
Filters.resize(0);
TextRange input_range(InputBuf, InputBuf+strlen(InputBuf));
input_range.split(',', Filters);
CountGrep = 0;
for (size_t i = 0; i != Filters.size(); i++)
{
Filters[i].trim_blanks();
if (Filters[i].empty())
continue;
if (Filters[i].front() != '-')
CountGrep += 1;
}
}
bool ImGuiTextFilter::PassFilter(const char* val) const
{
if (Filters.empty())
return true;
if (val == NULL)
val = "";
for (size_t i = 0; i != Filters.size(); i++)
{
const TextRange& f = Filters[i];
if (f.empty())
continue;
if (f.front() == '-')
{
// Subtract
if (ImStristr(val, f.begin()+1, f.end()) != NULL)
return false;
}
else
{
// Grep
if (ImStristr(val, f.begin(), f.end()) != NULL)
return true;
}
}
// Implicit * grep
if (CountGrep == 0)
return true;
return false;
}
//-----------------------------------------------------------------------------
void ImGuiTextBuffer::append(const char* fmt, ...)
{
va_list args;
va_start(args, fmt);
int len = vsnprintf(NULL, 0, fmt, args);
va_end(args);
if (len <= 0)
return;
const size_t write_off = Buf.size();
if (write_off + (size_t)len >= Buf.capacity())
Buf.reserve(Buf.capacity() * 2);
Buf.resize(write_off + (size_t)len);
va_start(args, fmt);
ImFormatStringV(&Buf[write_off] - 1, (size_t)len+1, fmt, args);
va_end(args);
}
//-----------------------------------------------------------------------------
ImGuiWindow::ImGuiWindow(const char* name, ImVec2 default_pos, ImVec2 default_size)
{
Name = strdup(name);
ID = GetID(name);
IDStack.push_back(ID);
PosFloat = default_pos;
Pos = ImVec2((float)(int)PosFloat.x, (float)(int)PosFloat.y);
Size = SizeFull = default_size;
SizeContentsFit = ImVec2(0.0f, 0.0f);
ScrollY = 0.0f;
NextScrollY = 0.0f;
ScrollbarY = false;
Visible = false;
Accessed = false;
Collapsed = false;
SkipItems = false;
AutoFitFrames = -1;
LastFrameDrawn = -1;
ItemWidthDefault = 0.0f;
FontScale = 1.0f;
if (ImLength(Size) < 0.001f)
AutoFitFrames = 3;
FocusIdxCounter = -1;
FocusIdxRequestCurrent = IM_INT_MAX;
FocusIdxRequestNext = IM_INT_MAX;
DrawList = new ImDrawList();
}
ImGuiWindow::~ImGuiWindow()
{
delete DrawList;
DrawList = NULL;
free(Name);
Name = NULL;
}
ImGuiID ImGuiWindow::GetID(const char* str)
{
const ImGuiID seed = IDStack.empty() ? 0 : IDStack.back();
const ImGuiID id = crc32(str, strlen(str), seed);
RegisterAliveId(id);
return id;
}
ImGuiID ImGuiWindow::GetID(const void* ptr)
{
const ImGuiID seed = IDStack.empty() ? 0 : IDStack.back();
const ImGuiID id = crc32(&ptr, sizeof(void*), seed);
RegisterAliveId(id);
return id;
}
bool ImGuiWindow::FocusItemRegister(bool is_active, int* out_idx)
{
FocusIdxCounter++;
if (out_idx)
*out_idx = FocusIdxCounter;
ImGuiState& g = GImGui;
ImGuiWindow* window = GetCurrentWindow();
if (!window->DC.AllowKeyboardFocus.back())
return false;
// Process input at this point: TAB, Shift-TAB switch focus
if (FocusIdxRequestNext == IM_INT_MAX && is_active && ImGui::IsKeyPressedMap(ImGuiKey_Tab))
{
// Modulo on index will be applied at the end of frame once we've got the total counter of items.
FocusIdxRequestNext = FocusIdxCounter + (g.IO.KeyShift ? -1 : +1);
}
const bool focus_requested = (FocusIdxCounter == FocusIdxRequestCurrent);
return focus_requested;
}
void ImGuiWindow::FocusItemUnregister()
{
FocusIdxCounter--;
}
void ImGuiWindow::AddToRenderList()
{
ImGuiState& g = GImGui;
if (!DrawList->commands.empty() && !DrawList->vtx_buffer.empty())
{
if (DrawList->commands.back().vtx_count == 0)
DrawList->commands.pop_back();
g.RenderDrawLists.push_back(DrawList);
}
for (size_t i = 0; i < DC.ChildWindows.size(); i++)
{
ImGuiWindow* child = DC.ChildWindows[i];
if (child->Visible) // clipped childs may have been marked not Visible
child->AddToRenderList();
}
}
//-----------------------------------------------------------------------------
namespace ImGui
{
static ImGuiIniData* FindWindowSettings(const char* name)
{
ImGuiState& g = GImGui;
for (size_t i = 0; i != g.Settings.size(); i++)
{
ImGuiIniData* ini = g.Settings[i];
if (ImStricmp(ini->Name, name) == 0)
return ini;
}
ImGuiIniData* ini = new ImGuiIniData();
ini->Name = strdup(name);
ini->Collapsed = false;
ini->Pos = ImVec2(FLT_MAX,FLT_MAX);
ini->Size = ImVec2(0,0);
g.Settings.push_back(ini);
return ini;
}
// Zero-tolerance, poor-man .ini parsing
// FIXME: Write something less rubbish
static void LoadSettings()
{
ImGuiState& g = GImGui;
const char* filename = g.IO.IniFilename;
if (!filename)
return;
// Load file
FILE* f;
if ((f = fopen(filename, "rt")) == NULL)
return;
if (fseek(f, 0, SEEK_END))
{
fclose(f);
return;
}
const long f_size_signed = ftell(f);
if (f_size_signed == -1)
{
fclose(f);
return;
}
size_t f_size = (size_t)f_size_signed;
if (fseek(f, 0, SEEK_SET))
{
fclose(f);
return;
}
char* f_data = new char[f_size+1];
f_size = fread(f_data, 1, f_size, f); // Text conversion alter read size so let's not be fussy about return value
fclose(f);
if (f_size == 0)
{
delete[] f_data;
return;
}
f_data[f_size] = 0;
ImGuiIniData* settings = NULL;
const char* buf_end = f_data + f_size;
for (const char* line_start = f_data; line_start < buf_end; )
{
const char* line_end = line_start;
while (line_end < buf_end && *line_end != '\n' && *line_end != '\r')
line_end++;
if (line_start[0] == '[' && line_end > line_start && line_end[-1] == ']')
{
char name[64];
ImFormatString(name, IM_ARRAYSIZE(name), "%.*s", line_end-line_start-2, line_start+1);
settings = FindWindowSettings(name);
}
else if (settings)
{
float x, y;
int i;
if (sscanf(line_start, "Pos=%f,%f", &x, &y) == 2)
settings->Pos = ImVec2(x, y);
else if (sscanf(line_start, "Size=%f,%f", &x, &y) == 2)
settings->Size = ImMax(ImVec2(x, y), g.Style.WindowMinSize);
else if (sscanf(line_start, "Collapsed=%d", &i) == 1)
settings->Collapsed = (i != 0);
}
line_start = line_end+1;
}
delete[] f_data;
}
static void SaveSettings()
{
ImGuiState& g = GImGui;
const char* filename = g.IO.IniFilename;
if (!filename)
return;
// Gather data from windows that were active during this session
for (size_t i = 0; i != g.Windows.size(); i++)
{
ImGuiWindow* window = g.Windows[i];
if (window->Flags & (ImGuiWindowFlags_ChildWindow | ImGuiWindowFlags_Tooltip))
continue;
ImGuiIniData* settings = FindWindowSettings(window->Name);
settings->Pos = window->Pos;
settings->Size = window->SizeFull;
settings->Collapsed = window->Collapsed;
}
// Write .ini file
// If a window wasn't opened in this session we preserve its settings
FILE* f = fopen(filename, "wt");
if (!f)
return;
for (size_t i = 0; i != g.Settings.size(); i++)
{
const ImGuiIniData* settings = g.Settings[i];
if (settings->Pos.x == FLT_MAX)
continue;
fprintf(f, "[%s]\n", settings->Name);
fprintf(f, "Pos=%d,%d\n", (int)settings->Pos.x, (int)settings->Pos.y);
fprintf(f, "Size=%d,%d\n", (int)settings->Size.x, (int)settings->Size.y);
fprintf(f, "Collapsed=%d\n", settings->Collapsed);
fprintf(f, "\n");
}
fclose(f);
}
static void MarkSettingsDirty()
{
ImGuiState& g = GImGui;
if (g.SettingsDirtyTimer <= 0.0f)
g.SettingsDirtyTimer = g.IO.IniSavingRate;
}
ImGuiIO& GetIO()
{
return GImGui.IO;
}
ImGuiStyle& GetStyle()
{
return GImGui.Style;
}
void NewFrame()
{
ImGuiState& g = GImGui;
// Check user inputs
IM_ASSERT(g.IO.DeltaTime > 0.0f);
IM_ASSERT(g.IO.DisplaySize.x > 0.0f && g.IO.DisplaySize.y > 0.0f);
IM_ASSERT(g.IO.RenderDrawListsFn != NULL); // Must be implemented
if (!g.Initialized)
{
// Initialize on first frame
IM_ASSERT(g.Settings.empty());
LoadSettings();
if (!g.IO.Font)
{
// Default font
const void* fnt_data;
unsigned int fnt_size;
ImGui::GetDefaultFontData(&fnt_data, &fnt_size, NULL, NULL);
g.IO.Font = new ImBitmapFont();
g.IO.Font->LoadFromMemory(fnt_data, fnt_size);
g.IO.FontHeight = g.IO.Font->GetFontSize();
}
g.Initialized = true;
}
g.Time += g.IO.DeltaTime;
g.FrameCount += 1;
g.Tooltip[0] = '\0';
// Update inputs state
if (g.IO.MousePos.x < 0 && g.IO.MousePos.y < 0)
g.IO.MousePos = ImVec2(-9999.0f, -9999.0f);
if ((g.IO.MousePos.x < 0 && g.IO.MousePos.y < 0) || (g.IO.MousePosPrev.x < 0 && g.IO.MousePosPrev.y < 0)) // if mouse just appeared or disappeared (negative coordinate) we cancel out movement in MouseDelta
g.IO.MouseDelta = ImVec2(0.0f, 0.0f);
else
g.IO.MouseDelta = g.IO.MousePos - g.IO.MousePosPrev;
g.IO.MousePosPrev = g.IO.MousePos;
for (size_t i = 0; i < IM_ARRAYSIZE(g.IO.MouseDown); i++)
{
g.IO.MouseDownTime[i] = g.IO.MouseDown[i] ? (g.IO.MouseDownTime[i] < 0.0f ? 0.0f : g.IO.MouseDownTime[i] + g.IO.DeltaTime) : -1.0f;
g.IO.MouseClicked[i] = (g.IO.MouseDownTime[i] == 0.0f);
g.IO.MouseDoubleClicked[i] = false;
if (g.IO.MouseClicked[i])
{
if (g.Time - g.IO.MouseClickedTime[i] < g.IO.MouseDoubleClickTime)
{
if (ImLength(g.IO.MousePos - g.IO.MouseClickedPos[i]) < g.IO.MouseDoubleClickMaxDist)
g.IO.MouseDoubleClicked[i] = true;
g.IO.MouseClickedTime[i] = -FLT_MAX; // so the third click isn't turned into a double-click
}
else
{
g.IO.MouseClickedTime[i] = g.Time;
g.IO.MouseClickedPos[i] = g.IO.MousePos;
}
}
}
for (size_t i = 0; i < IM_ARRAYSIZE(g.IO.KeysDown); i++)
g.IO.KeysDownTime[i] = g.IO.KeysDown[i] ? (g.IO.KeysDownTime[i] < 0.0f ? 0.0f : g.IO.KeysDownTime[i] + g.IO.DeltaTime) : -1.0f;
// Clear reference to active widget if the widget isn't alive anymore
g.HoveredId = 0;
if (!g.ActiveIdIsAlive && g.ActiveIdPreviousFrame == g.ActiveId && g.ActiveId != 0)
g.ActiveId = 0;
g.ActiveIdPreviousFrame = g.ActiveId;
g.ActiveIdIsAlive = false;
// Delay saving settings so we don't spam disk too much
if (g.SettingsDirtyTimer > 0.0f)
{
g.SettingsDirtyTimer -= g.IO.DeltaTime;
if (g.SettingsDirtyTimer <= 0.0f)
SaveSettings();
}
g.HoveredWindow = ImGui::FindHoveredWindow(g.IO.MousePos, false);
g.HoveredWindowExcludingChilds = ImGui::FindHoveredWindow(g.IO.MousePos, true);
// Are we snooping input?
g.IO.WantCaptureMouse = (g.HoveredWindow != NULL) || (g.ActiveId != 0);
g.IO.WantCaptureKeyboard = (g.ActiveId != 0);
// Scale & Scrolling
if (g.HoveredWindow && g.IO.MouseWheel != 0)
{
ImGuiWindow* window = g.HoveredWindow;
if (g.IO.KeyCtrl)
{
if (g.IO.FontAllowScaling)
{
// Zoom / Scale window
float new_font_scale = ImClamp(window->FontScale + g.IO.MouseWheel * 0.10f, 0.50f, 2.50f);
float scale = new_font_scale / window->FontScale;
window->FontScale = new_font_scale;
const ImVec2 offset = window->Size * (1.0f - scale) * (g.IO.MousePos - window->Pos) / window->Size;
window->Pos += offset;
window->PosFloat += offset;
window->Size *= scale;
window->SizeFull *= scale;
}
}
else
{
// Scroll
const int scroll_lines = (window->Flags & ImGuiWindowFlags_ComboBox) ? 3 : 5;
window->NextScrollY -= g.IO.MouseWheel * window->FontSize() * scroll_lines;
}
}
// Pressing TAB activate widget focus
// NB: Don't discard FocusedWindow if it isn't active, so that a window that go on/off programatically won't lose its keyboard focus.
if (g.ActiveId == 0 && g.FocusedWindow != NULL && g.FocusedWindow->Visible && IsKeyPressedMap(ImGuiKey_Tab, false))
{
g.FocusedWindow->FocusIdxRequestNext = 0;
}
// Mark all windows as not visible
for (size_t i = 0; i != g.Windows.size(); i++)
{
ImGuiWindow* window = g.Windows[i];
window->Visible = false;
window->Accessed = false;
}
// No window should be open at the beginning of the frame.
// But in order to allow the user to call NewFrame() multiple times without calling Render(), we are doing an explicit clear.
g.CurrentWindowStack.clear();
// Create implicit window - we will only render it if the user has added something to it.
ImGui::Begin("Debug", NULL, ImVec2(400,400));
}
// NB: behaviour of ImGui after Shutdown() is not tested/guaranteed at the moment. This function is merely here to free heap allocations.
void Shutdown()
{
ImGuiState& g = GImGui;
if (!g.Initialized)
return;
SaveSettings();
for (size_t i = 0; i < g.Windows.size(); i++)
delete g.Windows[i];
g.Windows.clear();
g.CurrentWindowStack.clear();
g.FocusedWindow = NULL;
g.HoveredWindow = NULL;
g.HoveredWindowExcludingChilds = NULL;
for (size_t i = 0; i < g.Settings.size(); i++)
delete g.Settings[i];
g.Settings.clear();
g.ColorEditModeStorage.Clear();
if (g.LogFile && g.LogFile != stdout)
{
fclose(g.LogFile);
g.LogFile = NULL;
}
if (g.IO.Font)
{
delete g.IO.Font;
g.IO.Font = NULL;
}
if (g.PrivateClipboard)
{
free(g.PrivateClipboard);
g.PrivateClipboard = NULL;
}
g.Initialized = false;
}
static void AddWindowToSortedBuffer(ImGuiWindow* window, ImVector<ImGuiWindow*>& sorted_windows)
{
sorted_windows.push_back(window);
if (window->Visible)
{
for (size_t i = 0; i < window->DC.ChildWindows.size(); i++)
{
ImGuiWindow* child = window->DC.ChildWindows[i];
if (child->Visible)
AddWindowToSortedBuffer(child, sorted_windows);
}
}
}
static void PushClipRect(const ImVec4& clip_rect, bool clipped = true)
{
ImGuiWindow* window = GetCurrentWindow();
ImVec4 cr = clip_rect;
if (clipped && !window->ClipRectStack.empty())
{
// Clip to new clip rect
const ImVec4 cur_cr = window->ClipRectStack.back();
cr = ImVec4(ImMax(cr.x, cur_cr.x), ImMax(cr.y, cur_cr.y), ImMin(cr.z, cur_cr.z), ImMin(cr.w, cur_cr.w));
}
window->ClipRectStack.push_back(cr);
window->DrawList->PushClipRect(cr);
}
static void PopClipRect()
{
ImGuiWindow* window = GetCurrentWindow();
window->ClipRectStack.pop_back();
window->DrawList->PopClipRect();
}
void Render()
{
ImGuiState& g = GImGui;
IM_ASSERT(g.Initialized); // Forgot to call ImGui::NewFrame()
const bool first_render_of_the_frame = (g.FrameCountRendered != g.FrameCount);
g.FrameCountRendered = g.FrameCount;
if (first_render_of_the_frame)
{
// Hide implicit window if it hasn't been used
IM_ASSERT(g.CurrentWindowStack.size() == 1); // Mismatched Begin/End
if (g.CurrentWindow && !g.CurrentWindow->Accessed)
g.CurrentWindow->Visible = false;
ImGui::End();
// Sort the window list so that all child windows are after their parent
// We cannot do that on FocusWindow() because childs may not exist yet
ImVector<ImGuiWindow*> sorted_windows;
sorted_windows.reserve(g.Windows.size());
for (size_t i = 0; i != g.Windows.size(); i++)
{
ImGuiWindow* window = g.Windows[i];
if (window->Flags & ImGuiWindowFlags_ChildWindow) // if a child is visible its parent will add it
if (window->Visible)
continue;
AddWindowToSortedBuffer(window, sorted_windows);
}
IM_ASSERT(g.Windows.size() == sorted_windows.size()); // We done something wrong
g.Windows.swap(sorted_windows);
// Clear data for next frame
g.IO.MouseWheel = 0;
memset(g.IO.InputCharacters, 0, sizeof(g.IO.InputCharacters));
}
// Skip render altogether if alpha is 0.0
// Note that vertex buffers have been created, so it is best practice that you don't call Begin/End in the first place.
if (g.Style.Alpha > 0.0f)
{
// Render tooltip
if (g.Tooltip[0])
{
// Use a dummy window to render the tooltip
ImGui::BeginTooltip();
ImGui::TextUnformatted(g.Tooltip);
ImGui::EndTooltip();
}
// Gather windows to render
g.RenderDrawLists.resize(0);
for (size_t i = 0; i != g.Windows.size(); i++)
{
ImGuiWindow* window = g.Windows[i];
if (window->Visible && (window->Flags & (ImGuiWindowFlags_ChildWindow | ImGuiWindowFlags_Tooltip)) == 0)
window->AddToRenderList();
}
for (size_t i = 0; i != g.Windows.size(); i++)
{
ImGuiWindow* window = g.Windows[i];
if (window->Visible && (window->Flags & ImGuiWindowFlags_Tooltip))
window->AddToRenderList();
}
// Render
if (!g.RenderDrawLists.empty())
g.IO.RenderDrawListsFn(&g.RenderDrawLists[0], (int)g.RenderDrawLists.size());
g.RenderDrawLists.resize(0);
}
}
// Find the optional ## from which we stop displaying text.
static const char* FindTextDisplayEnd(const char* text, const char* text_end = NULL)
{
const char* text_display_end = text;
while ((!text_end || text_display_end < text_end) && *text_display_end != '\0' && (text_display_end[0] != '#' || text_display_end[1] != '#'))
text_display_end++;
return text_display_end;
}
static void LogText(const ImVec2& ref_pos, const char* text, const char* text_end)
{
ImGuiState& g = GImGui;
ImGuiWindow* window = GetCurrentWindow();
if (!text_end)
text_end = FindTextDisplayEnd(text, text_end);
const bool log_new_line = ref_pos.y > window->DC.LogLineHeight+1;
window->DC.LogLineHeight = ref_pos.y;
const char* text_remaining = text;
const int tree_depth = window->DC.TreeDepth;
while (true)
{
const char* line_end = text_remaining;
while (line_end < text_end)
if (*line_end == '\n')
break;
else
line_end++;
if (line_end >= text_end)
line_end = NULL;
bool is_first_line = (text == text_remaining);
bool is_last_line = false;
if (line_end == NULL)
{
is_last_line = true;
line_end = text_end;
}
if (line_end != NULL && !(is_last_line && (line_end - text_remaining)==0))
{
const int char_count = (int)(line_end - text_remaining);
if (g.LogFile)
{
if (log_new_line || !is_first_line)
fprintf(g.LogFile, "\n%*s%.*s", tree_depth*4, "", char_count, text_remaining);
else
fprintf(g.LogFile, " %.*s", char_count, text_remaining);
}
else
{
if (log_new_line || !is_first_line)
g.LogClipboard.append("\n%*s%.*s", tree_depth*4, "", char_count, text_remaining);
else
g.LogClipboard.append(" %.*s", char_count, text_remaining);
}
}
if (is_last_line)
break;
text_remaining = line_end + 1;
}
}
static void RenderText(ImVec2 pos, const char* text, const char* text_end, const bool hide_text_after_hash)
{
ImGuiState& g = GImGui;
ImGuiWindow* window = GetCurrentWindow();
// Hide anything after a '##' string
const char* text_display_end;
if (hide_text_after_hash)
{
text_display_end = FindTextDisplayEnd(text, text_end);
}
else
{
if (!text_end)
text_end = text + strlen(text);
text_display_end = text_end;
}
const int text_len = (int)(text_display_end - text);
//IM_ASSERT(text_len >= 0 && text_len < 10000); // Suspicious text length
if (text_len > 0)
{
// Render
window->DrawList->AddText(window->Font(), window->FontSize(), pos, window->Color(ImGuiCol_Text), text, text + text_len);
// Log as text. We split text into individual lines to add the tree level padding
if (g.LogEnabled)
LogText(pos, text, text_display_end);
}
}
static void RenderFrame(ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, bool border, float rounding)
{
ImGuiWindow* window = GetCurrentWindow();
window->DrawList->AddRectFilled(p_min, p_max, fill_col, rounding);
if (border && (window->Flags & ImGuiWindowFlags_ShowBorders))
{
window->DrawList->AddRect(p_min+ImVec2(1,1), p_max+ImVec2(1,1), window->Color(ImGuiCol_BorderShadow), rounding);
window->DrawList->AddRect(p_min, p_max, window->Color(ImGuiCol_Border), rounding);
}
}
static void RenderCollapseTriangle(ImVec2 p_min, bool open, float scale = 1.0f, bool shadow = false)
{
ImGuiWindow* window = GetCurrentWindow();
const float h = window->FontSize() * 1.00f;
const float r = h * 0.40f * scale;
ImVec2 center = p_min + ImVec2(h*0.50f, h*0.50f*scale);
ImVec2 a, b, c;
if (open)
{
center.y -= r*0.25f;
a = center + ImVec2(0,1)*r;
b = center + ImVec2(-0.866f,-0.5f)*r;
c = center + ImVec2(0.866f,-0.5f)*r;
}
else
{
a = center + ImVec2(1,0)*r;
b = center + ImVec2(-0.500f,0.866f)*r;
c = center + ImVec2(-0.500f,-0.866f)*r;
}
if (shadow)
window->DrawList->AddTriangleFilled(a+ImVec2(2,2), b+ImVec2(2,2), c+ImVec2(2,2), window->Color(ImGuiCol_BorderShadow));
window->DrawList->AddTriangleFilled(a, b, c, window->Color(ImGuiCol_Border));
}
ImVec2 CalcTextSize(const char* text, const char* text_end, const bool hide_text_after_hash)
{
ImGuiWindow* window = GetCurrentWindow();
const char* text_display_end;
if (hide_text_after_hash)
text_display_end = FindTextDisplayEnd(text, text_end); // Hide anything after a '##' string
else
text_display_end = text_end;
const ImVec2 size = window->Font()->CalcTextSize(window->FontSize(), 0, text, text_display_end, NULL);
return size;
}
static ImGuiWindow* FindHoveredWindow(ImVec2 pos, bool excluding_childs)
{
ImGuiState& g = GImGui;
for (int i = (int)g.Windows.size()-1; i >= 0; i--)
{
ImGuiWindow* window = g.Windows[(size_t)i];
if (!window->Visible)
continue;
if (excluding_childs && (window->Flags & ImGuiWindowFlags_ChildWindow) != 0)
continue;
ImGuiAabb bb(window->Pos - g.Style.TouchExtraPadding, window->Pos+window->Size + g.Style.TouchExtraPadding);
if (bb.Contains(pos))
return window;
}
return NULL;
}
// - Box is clipped by our current clip setting
// - Expand to be generous on unprecise inputs systems (touch)
static bool IsMouseHoveringBox(const ImGuiAabb& box)
{
ImGuiState& g = GImGui;
ImGuiWindow* window = GetCurrentWindow();
// Clip
ImGuiAabb box_clipped = box;
if (!window->ClipRectStack.empty())
{
const ImVec4 clip_rect = window->ClipRectStack.back();
box_clipped.Clip(ImGuiAabb(ImVec2(clip_rect.x, clip_rect.y), ImVec2(clip_rect.z, clip_rect.w)));
}
// Expand for touch input
ImGuiAabb box_for_touch(box_clipped.Min - g.Style.TouchExtraPadding, box_clipped.Max + g.Style.TouchExtraPadding);
return box_for_touch.Contains(g.IO.MousePos);
}
bool IsMouseHoveringBox(const ImVec2& box_min, const ImVec2& box_max)
{
return IsMouseHoveringBox(ImGuiAabb(box_min, box_max));
}
static bool IsKeyPressedMap(ImGuiKey key, bool repeat)
{
ImGuiState& g = GImGui;
const int key_index = g.IO.KeyMap[key];
return IsKeyPressed(key_index, repeat);
}
bool IsKeyPressed(int key_index, bool repeat)
{
ImGuiState& g = GImGui;
IM_ASSERT(key_index >= 0 && key_index < IM_ARRAYSIZE(g.IO.KeysDown));
const float t = g.IO.KeysDownTime[key_index];
if (t == 0.0f)
return true;
// FIXME: Repeat rate should be provided elsewhere?
const float KEY_REPEAT_DELAY = 0.250f;
const float KEY_REPEAT_RATE = 0.020f;
if (repeat && t > KEY_REPEAT_DELAY)
if ((fmodf(t - KEY_REPEAT_DELAY, KEY_REPEAT_RATE) > KEY_REPEAT_RATE*0.5f) != (fmodf(t - KEY_REPEAT_DELAY - g.IO.DeltaTime, KEY_REPEAT_RATE) > KEY_REPEAT_RATE*0.5f))
return true;
return false;
}
bool IsMouseClicked(int button, bool repeat)
{
ImGuiState& g = GImGui;
IM_ASSERT(button >= 0 && button < IM_ARRAYSIZE(g.IO.MouseDown));
const float t = g.IO.MouseDownTime[button];
if (t == 0.0f)
return true;
// FIXME: Repeat rate should be provided elsewhere?
const float MOUSE_REPEAT_DELAY = 0.250f;
const float MOUSE_REPEAT_RATE = 0.020f;
if (repeat && t > MOUSE_REPEAT_DELAY)
if ((fmodf(t - MOUSE_REPEAT_DELAY, MOUSE_REPEAT_RATE) > MOUSE_REPEAT_RATE*0.5f) != (fmodf(t - MOUSE_REPEAT_DELAY - g.IO.DeltaTime, MOUSE_REPEAT_RATE) > MOUSE_REPEAT_RATE*0.5f))
return true;
return false;
}
bool IsMouseDoubleClicked(int button)
{
ImGuiState& g = GImGui;
IM_ASSERT(button >= 0 && button < IM_ARRAYSIZE(g.IO.MouseDown));
return g.IO.MouseDoubleClicked[button];
}
ImVec2 GetMousePos()
{
return GImGui.IO.MousePos;
}
bool IsHovered()
{
ImGuiWindow* window = GetCurrentWindow();
return window->DC.LastItemHovered;
}
ImVec2 GetItemBoxMin()
{
ImGuiWindow* window = GetCurrentWindow();
return window->DC.LastItemAabb.Min;
}
ImVec2 GetItemBoxMax()
{
ImGuiWindow* window = GetCurrentWindow();
return window->DC.LastItemAabb.Max;
}
void SetTooltip(const char* fmt, ...)
{
ImGuiState& g = GImGui;
va_list args;
va_start(args, fmt);
ImFormatStringV(g.Tooltip, IM_ARRAYSIZE(g.Tooltip), fmt, args);
va_end(args);
}
void SetNewWindowDefaultPos(const ImVec2& pos)
{
ImGuiState& g = GImGui;
g.NewWindowDefaultPos = pos;
}
float GetTime()
{
return GImGui.Time;
}
int GetFrameCount()
{
return GImGui.FrameCount;
}
static ImGuiWindow* FindWindow(const char* name)
{
ImGuiState& g = GImGui;
for (size_t i = 0; i != g.Windows.size(); i++)
if (strcmp(g.Windows[i]->Name, name) == 0)
return g.Windows[i];
return NULL;
}
void BeginTooltip()
{
ImGui::Begin("##Tooltip", NULL, ImVec2(0,0), 0.9f, ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_Tooltip);
}
void EndTooltip()
{
IM_ASSERT(GetCurrentWindow()->Flags & ImGuiWindowFlags_Tooltip);
ImGui::End();
}
void BeginChild(const char* str_id, ImVec2 size, bool border, ImGuiWindowFlags extra_flags)
{
ImGuiState& g = GImGui;
ImGuiWindow* window = GetCurrentWindow();
ImGuiWindowFlags flags = ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_ChildWindow;
const ImVec2 content_max = window->Pos + ImGui::GetWindowContentRegionMax();
const ImVec2 cursor_pos = window->Pos + ImGui::GetCursorPos();
if (size.x <= 0.0f)
{
size.x = ImMax(content_max.x - cursor_pos.x, g.Style.WindowMinSize.x);
flags |= ImGuiWindowFlags_ChildWindowAutoFitX;
}
if (size.y <= 0.0f)
{
size.y = ImMax(content_max.y - cursor_pos.y, g.Style.WindowMinSize.y);
flags |= ImGuiWindowFlags_ChildWindowAutoFitY;
}
if (border)
flags |= ImGuiWindowFlags_ShowBorders;
flags |= extra_flags;
char title[256];
ImFormatString(title, IM_ARRAYSIZE(title), "%s.%s", window->Name, str_id);
const float alpha = (flags & ImGuiWindowFlags_ComboBox) ? 1.0f : 0.0f;
ImGui::Begin(title, NULL, size, alpha, flags);
if (!(window->Flags & ImGuiWindowFlags_ShowBorders))
g.CurrentWindow->Flags &= ~ImGuiWindowFlags_ShowBorders;
}
void EndChild()
{
ImGuiWindow* window = GetCurrentWindow();
if (window->Flags & ImGuiWindowFlags_ComboBox)
{
ImGui::End();
}
else
{
// When using filling child window, we don't provide the width/height to ItemSize so that it doesn't feed back into automatic fitting
ImVec2 sz = ImGui::GetWindowSize();
if (window->Flags & ImGuiWindowFlags_ChildWindowAutoFitX)
sz.x = 0;
if (window->Flags & ImGuiWindowFlags_ChildWindowAutoFitY)
sz.y = 0;
ImGui::End();
ImGui::ItemSize(sz);
}
}
bool Begin(const char* name, bool* open, ImVec2 size, float fill_alpha, ImGuiWindowFlags flags)
{
ImGuiState& g = GImGui;
const ImGuiStyle& style = g.Style;
ImGuiWindow* window = FindWindow(name);
if (!window)
{
// Create window the first time, and load settings
if (flags & (ImGuiWindowFlags_ChildWindow | ImGuiWindowFlags_Tooltip))
{
window = new ImGuiWindow(name, ImVec2(0,0), size);
}
else
{
ImGuiIniData* settings = FindWindowSettings(name);
if (settings && ImLength(settings->Size) > 0.0f && !(flags & ImGuiWindowFlags_NoResize))// && ImLengthsize) == 0.0f)
size = settings->Size;
window = new ImGuiWindow(name, g.NewWindowDefaultPos, size);
if (settings->Pos.x != FLT_MAX)
{
window->PosFloat = settings->Pos;
window->Pos = ImVec2((float)(int)window->PosFloat.x, (float)(int)window->PosFloat.y);
window->Collapsed = settings->Collapsed;
}
}
g.Windows.push_back(window);
}
window->Flags = (ImGuiWindowFlags)flags;
g.CurrentWindowStack.push_back(window);
g.CurrentWindow = window;
// Default alpha
if (fill_alpha < 0.0f)
fill_alpha = style.WindowFillAlphaDefault;
// When reusing window again multiple times a frame, just append content (don't need to setup again)
const int current_frame = ImGui::GetFrameCount();
const bool first_begin_of_the_frame = (window->LastFrameDrawn != current_frame);
if (first_begin_of_the_frame)
{
window->DrawList->Clear();
window->Visible = true;
// New windows appears in front
if (window->LastFrameDrawn < current_frame - 1)
{
ImGui::FocusWindow(window);
if ((window->Flags & ImGuiWindowFlags_Tooltip) != 0)
{
// Hide for 1 frame while resizing
window->AutoFitFrames = 2;
window->Visible = false;
}
}
window->LastFrameDrawn = current_frame;
window->ClipRectStack.resize(0);
if (flags & ImGuiWindowFlags_ChildWindow)
{
ImGuiWindow* parent_window = g.CurrentWindowStack[g.CurrentWindowStack.size()-2];
parent_window->DC.ChildWindows.push_back(window);
window->Pos = window->PosFloat = parent_window->DC.CursorPos;
window->SizeFull = size;
}
// Outer clipping rectangle
if ((flags & ImGuiWindowFlags_ChildWindow) && !(flags & ImGuiWindowFlags_ComboBox))
ImGui::PushClipRect(g.CurrentWindowStack[g.CurrentWindowStack.size()-2]->ClipRectStack.back());
else
ImGui::PushClipRect(ImVec4(0.0f, 0.0f, g.IO.DisplaySize.x, g.IO.DisplaySize.y));
// ID stack
window->IDStack.resize(0);
ImGui::PushID(window);
// Move window (at the beginning of the frame)
const ImGuiID move_id = window->GetID("#MOVE");
RegisterAliveId(move_id);
if (g.ActiveId == move_id)
{
if (g.IO.MouseDown[0])
{
if (!(window->Flags & ImGuiWindowFlags_NoMove))
{
window->PosFloat += g.IO.MouseDelta;
MarkSettingsDirty();
}
ImGui::FocusWindow(window);
}
else
{
g.ActiveId = 0;
}
}
// Tooltips always follow mouse
if ((window->Flags & ImGuiWindowFlags_Tooltip) != 0)
{
window->PosFloat = g.IO.MousePos + ImVec2(32,16) - g.Style.FramePadding*2;
}
// Clamp into view
if (!(window->Flags & ImGuiWindowFlags_ChildWindow))
{
const ImVec2 pad = ImVec2(window->FontSize()*2.0f, window->FontSize()*2.0f);
window->PosFloat = ImMax(window->PosFloat + window->Size, pad) - window->Size;
window->PosFloat = ImMin(window->PosFloat, ImVec2(g.IO.DisplaySize.x, g.IO.DisplaySize.y) - pad);
window->Pos = ImVec2((float)(int)window->PosFloat.x, (float)(int)window->PosFloat.y);
window->SizeFull = ImMax(window->SizeFull, pad);
}
else
{
window->Pos = ImVec2((float)(int)window->PosFloat.x, (float)(int)window->PosFloat.y);
}
// Default item width
if (window->Size.x > 0.0f && !(window->Flags & ImGuiWindowFlags_Tooltip))
window->ItemWidthDefault = (float)(int)(window->Size.x * 0.65f);
else
window->ItemWidthDefault = 200.0f;
// Prepare for focus requests
if (window->FocusIdxRequestNext == IM_INT_MAX || window->FocusIdxCounter == -1)
{
window->FocusIdxRequestCurrent = IM_INT_MAX;
}
else
{
const int mod = window->FocusIdxCounter+1;
window->FocusIdxRequestCurrent = (window->FocusIdxRequestNext + mod) % mod;
}
window->FocusIdxCounter = -1;
window->FocusIdxRequestNext = IM_INT_MAX;
ImGuiAabb title_bar_aabb = window->TitleBarAabb();
// Apply and ImClamp scrolling
window->ScrollY = window->NextScrollY;
window->ScrollY = ImMax(window->ScrollY, 0.0f);
if (!window->Collapsed && !window->SkipItems)
window->ScrollY = ImMin(window->ScrollY, ImMax(0.0f, (float)window->SizeContentsFit.y - window->SizeFull.y));
window->NextScrollY = window->ScrollY;
// NB- at this point we don't have a clipping rectangle setup yet!
// Collapse window by double-clicking on title bar
if (!(window->Flags & ImGuiWindowFlags_NoTitleBar))
{
if (g.HoveredWindow == window && IsMouseHoveringBox(title_bar_aabb) && g.IO.MouseDoubleClicked[0])
{
window->Collapsed = !window->Collapsed;
MarkSettingsDirty();
ImGui::FocusWindow(window);
}
}
else
{
window->Collapsed = false;
}
if (window->Collapsed)
{
// Title bar only
window->Size = title_bar_aabb.GetSize();
window->DrawList->AddRectFilled(title_bar_aabb.GetTL(), title_bar_aabb.GetBR(), window->Color(ImGuiCol_TitleBgCollapsed), g.Style.WindowRounding);
if (window->Flags & ImGuiWindowFlags_ShowBorders)
{
window->DrawList->AddRect(title_bar_aabb.GetTL()+ImVec2(1,1), title_bar_aabb.GetBR()+ImVec2(1,1), window->Color(ImGuiCol_BorderShadow), g.Style.WindowRounding);
window->DrawList->AddRect(title_bar_aabb.GetTL(), title_bar_aabb.GetBR(), window->Color(ImGuiCol_Border), g.Style.WindowRounding);
}
}
else
{
window->Size = window->SizeFull;
// Draw resize grip and resize
ImU32 resize_col = 0;
if ((window->Flags & ImGuiWindowFlags_Tooltip) != 0)
{
if (window->AutoFitFrames > 0)
{
// Tooltip always resize
window->SizeFull = window->SizeContentsFit + g.Style.WindowPadding - ImVec2(0.0f, g.Style.ItemSpacing.y);
}
}
else if (!(window->Flags & ImGuiWindowFlags_NoResize))
{
const ImGuiAabb resize_aabb(window->Aabb().GetBR()-ImVec2(18,18), window->Aabb().GetBR());
const ImGuiID resize_id = window->GetID("#RESIZE");
bool hovered, held;
ButtonBehaviour(resize_aabb, resize_id, &hovered, &held, true);
resize_col = window->Color(held ? ImGuiCol_ResizeGripActive : hovered ? ImGuiCol_ResizeGripHovered : ImGuiCol_ResizeGrip);
ImVec2 size_auto_fit = ImClamp(window->SizeContentsFit + style.AutoFitPadding, style.WindowMinSize, g.IO.DisplaySize - style.AutoFitPadding);
if (window->AutoFitFrames > 0)
{
// Auto-fit only grows during the first few frames
window->SizeFull = ImMax(window->SizeFull, size_auto_fit);
MarkSettingsDirty();
}
else if (g.HoveredWindow == window && held && g.IO.MouseDoubleClicked[0])
{
// Manual auto-fit
window->SizeFull = size_auto_fit;
window->Size = window->SizeFull;
MarkSettingsDirty();
}
else if (held)
{
// Resize
window->SizeFull = ImMax(window->SizeFull + g.IO.MouseDelta, style.WindowMinSize);
window->Size = window->SizeFull;
MarkSettingsDirty();
}
// Update aabb immediately so that the rendering below isn't one frame late
title_bar_aabb = window->TitleBarAabb();
}
// Title bar + Window box
if (fill_alpha > 0.0f)
{
if ((window->Flags & ImGuiWindowFlags_ComboBox) != 0)
window->DrawList->AddRectFilled(window->Pos, window->Pos+window->Size, window->Color(ImGuiCol_ComboBg, fill_alpha), 0);
else
window->DrawList->AddRectFilled(window->Pos, window->Pos+window->Size, window->Color(ImGuiCol_WindowBg, fill_alpha), g.Style.WindowRounding);
}
if (!(window->Flags & ImGuiWindowFlags_NoTitleBar))
window->DrawList->AddRectFilled(title_bar_aabb.GetTL(), title_bar_aabb.GetBR(), window->Color(ImGuiCol_TitleBg), g.Style.WindowRounding, 1|2);
if (window->Flags & ImGuiWindowFlags_ShowBorders)
{
const float rounding = (window->Flags & ImGuiWindowFlags_ComboBox) ? 0.0f : g.Style.WindowRounding;
window->DrawList->AddRect(window->Pos+ImVec2(1,1), window->Pos+window->Size+ImVec2(1,1), window->Color(ImGuiCol_BorderShadow), rounding);
window->DrawList->AddRect(window->Pos, window->Pos+window->Size, window->Color(ImGuiCol_Border), rounding);
if (!(window->Flags & ImGuiWindowFlags_NoTitleBar))
window->DrawList->AddLine(title_bar_aabb.GetBL(), title_bar_aabb.GetBR(), window->Color(ImGuiCol_Border));
}
// Scrollbar
window->ScrollbarY = (window->SizeContentsFit.y > window->Size.y) && !(window->Flags & ImGuiWindowFlags_NoScrollbar);
if (window->ScrollbarY)
{
ImGuiAabb scrollbar_bb(window->Aabb().Max.x - style.ScrollBarWidth, title_bar_aabb.Max.y+1, window->Aabb().Max.x, window->Aabb().Max.y-1);
//window->DrawList->AddLine(scrollbar_bb.GetTL(), scrollbar_bb.GetBL(), g.Colors[ImGuiCol_Border]);
window->DrawList->AddRectFilled(scrollbar_bb.Min, scrollbar_bb.Max, window->Color(ImGuiCol_ScrollbarBg));
scrollbar_bb.Max.x -= 3;
scrollbar_bb.Expand(ImVec2(0,-3));
const float grab_size_y_norm = ImSaturate(window->Size.y / ImMax(window->SizeContentsFit.y, window->Size.y));
const float grab_size_y = scrollbar_bb.GetHeight() * grab_size_y_norm;
// Handle input right away (none of the code above is relying on scrolling)
bool held = false;
bool hovered = false;
if (grab_size_y_norm < 1.0f)
{
const ImGuiID scrollbar_id = window->GetID("#SCROLLY");
ButtonBehaviour(scrollbar_bb, scrollbar_id, &hovered, &held, true);
if (held)
{
g.HoveredId = scrollbar_id;
const float pos_y_norm = ImSaturate((g.IO.MousePos.y - (scrollbar_bb.Min.y + grab_size_y*0.5f)) / (scrollbar_bb.GetHeight() - grab_size_y)) * (1.0f - grab_size_y_norm);
window->ScrollY = pos_y_norm * window->SizeContentsFit.y;
window->NextScrollY = window->ScrollY;
}
}
// Normalized height of the grab
const float pos_y_norm = ImSaturate(window->ScrollY / ImMax(0.0f, window->SizeContentsFit.y));
const ImU32 grab_col = window->Color(held ? ImGuiCol_ScrollbarGrabActive : hovered ? ImGuiCol_ScrollbarGrabHovered : ImGuiCol_ScrollbarGrab);
window->DrawList->AddRectFilled(
ImVec2(scrollbar_bb.Min.x, ImLerp(scrollbar_bb.Min.y, scrollbar_bb.Max.y, pos_y_norm)),
ImVec2(scrollbar_bb.Max.x, ImLerp(scrollbar_bb.Min.y, scrollbar_bb.Max.y, pos_y_norm + grab_size_y_norm)), grab_col);
}
// Render resize grip
// (after the input handling so we don't have a frame of latency)
if (!(window->Flags & ImGuiWindowFlags_NoResize))
{
const float r = style.WindowRounding;
const ImVec2 br = window->Aabb().GetBR();
if (r == 0.0f)
{
window->DrawList->AddTriangleFilled(br, br-ImVec2(0,14), br-ImVec2(14,0), resize_col);
}
else
{
// FIXME: We should draw 4 triangles and decide on a size that's not dependant on the rounding size (previously used 18)
window->DrawList->AddArc(br - ImVec2(r,r), r, resize_col, 6, 9, true);
window->DrawList->AddTriangleFilled(br+ImVec2(0,-2*r),br+ImVec2(0,-r),br+ImVec2(-r,-r), resize_col);
window->DrawList->AddTriangleFilled(br+ImVec2(-r,-r), br+ImVec2(-r,0),br+ImVec2(-2*r,0), resize_col);
}
}
}
// Setup drawing context
window->DC.ColumnStartX = window->WindowPadding().x;
window->DC.CursorStartPos = window->Pos + ImVec2(window->DC.ColumnStartX, window->TitleBarHeight() + window->WindowPadding().y) - ImVec2(0.0f, window->ScrollY);
window->DC.CursorPos = window->DC.CursorStartPos;
window->DC.CursorPosPrevLine = window->DC.CursorPos;
window->DC.CurrentLineHeight = window->DC.PrevLineHeight = 0.0f;
window->DC.LogLineHeight = window->DC.CursorPos.y - 9999.0f;
window->DC.ChildWindows.resize(0);
window->DC.ItemWidth.resize(0);
window->DC.ItemWidth.push_back(window->ItemWidthDefault);
window->DC.AllowKeyboardFocus.resize(0);
window->DC.AllowKeyboardFocus.push_back(true);
window->DC.ColorModifiers.resize(0);
window->DC.ColorEditMode = ImGuiColorEditMode_UserSelect;
window->DC.ColumnCurrent = 0;
window->DC.ColumnsCount = 1;
window->DC.TreeDepth = 0;
window->DC.StateStorage = &window->StateStorage;
window->DC.OpenNextNode = -1;
// Reset contents size for auto-fitting
window->SizeContentsFit = ImVec2(0.0f, 0.0f);
if (window->AutoFitFrames > 0)
window->AutoFitFrames--;
// Title bar
if (!(window->Flags & ImGuiWindowFlags_NoTitleBar))
{
RenderCollapseTriangle(window->Pos + style.FramePadding, !window->Collapsed, 1.0f, true);
if (open)
ImGui::CloseWindowButton(open);
const ImVec2 text_size = CalcTextSize(name);
const ImVec2 text_min = window->Pos + style.FramePadding + ImVec2(window->FontSize() + style.ItemInnerSpacing.x, 0.0f);
const ImVec2 text_max = window->Pos + ImVec2(window->Size.x - (open ? (title_bar_aabb.GetHeight()-3) : style.FramePadding.x), style.FramePadding.y + text_size.y);
const bool clip_title = text_size.x > (text_max.x - text_min.x); // only push a clip rectangle if we need to, because it may turn into a separate draw call
if (clip_title)
ImGui::PushClipRect(ImVec4(text_min.x, text_min.y, text_max.x, text_max.y));
RenderText(text_min, name);
if (clip_title)
ImGui::PopClipRect();
}
}
else
{
// Outer clipping rectangle
if ((flags & ImGuiWindowFlags_ChildWindow) && !(flags & ImGuiWindowFlags_ComboBox))
{
ImGuiWindow* parent_window = g.CurrentWindowStack[g.CurrentWindowStack.size()-2];
ImGui::PushClipRect(parent_window->ClipRectStack.back());
}
else
{
ImGui::PushClipRect(ImVec4(0.0f, 0.0f, g.IO.DisplaySize.x, g.IO.DisplaySize.y));
}
}
// Inner clipping rectangle
// We set this up after processing the resize grip so that our clip rectangle doesn't lag by a frame
const ImGuiAabb title_bar_aabb = window->TitleBarAabb();
ImVec4 clip_rect(title_bar_aabb.Min.x+0.5f+window->WindowPadding().x*0.5f, title_bar_aabb.Max.y+0.5f, window->Aabb().Max.x+0.5f-window->WindowPadding().x*0.5f, window->Aabb().Max.y-1.5f);
if (window->ScrollbarY)
clip_rect.z -= g.Style.ScrollBarWidth;
ImGui::PushClipRect(clip_rect);
if (first_begin_of_the_frame)
{
// Clear 'accessed' flag last thing
window->Accessed = false;
}
// Child window can be out of sight and have "negative" clip windows.
// Mark them as collapsed so commands are skipped earlier (we can't manually collapse because they have no title bar).
if (flags & ImGuiWindowFlags_ChildWindow)
{
IM_ASSERT((flags & ImGuiWindowFlags_NoTitleBar) != 0);
const ImVec4 clip_rect = window->ClipRectStack.back();
window->Collapsed = (clip_rect.x >= clip_rect.z || clip_rect.y >= clip_rect.w);
// We also hide the window from rendering because we've already added its border to the command list.
// (we could perform the check earlier in the function but it is simplier at this point)
if (window->Collapsed)
window->Visible = false;
}
if (g.Style.Alpha <= 0.0f)
window->Visible = false;
// Return false if we don't intend to display anything to allow user to perform an early out optimisation
window->SkipItems = window->Collapsed || (!window->Visible && window->AutoFitFrames == 0);
return !window->SkipItems;
}
void End()
{
ImGuiState& g = GImGui;
ImGuiWindow* window = g.CurrentWindow;
ImGui::Columns(1, "#CloseColumns");
ImGui::PopClipRect(); // inner window clip rectangle
ImGui::PopClipRect(); // outer window clip rectangle
// Select window for move/focus when we're done with all our widgets
ImGuiAabb bb(window->Pos, window->Pos+window->Size);
if (g.ActiveId == 0 && g.HoveredId == 0 && g.HoveredWindowExcludingChilds == window && IsMouseHoveringBox(bb) && g.IO.MouseClicked[0])
g.ActiveId = window->GetID("#MOVE");
// Stop logging
if (!(window->Flags & ImGuiWindowFlags_ChildWindow)) // FIXME: more options for scope of logging
{
g.LogEnabled = false;
if (g.LogFile != NULL)
{
fprintf(g.LogFile, "\n");
if (g.LogFile == stdout)
fflush(g.LogFile);
else
fclose(g.LogFile);
g.LogFile = NULL;
}
if (g.LogClipboard.size() > 1)
{
g.LogClipboard.append("\n");
if (g.IO.SetClipboardTextFn)
g.IO.SetClipboardTextFn(g.LogClipboard.begin(), g.LogClipboard.end());
g.LogClipboard.clear();
}
}
// Pop
g.CurrentWindowStack.pop_back();
g.CurrentWindow = g.CurrentWindowStack.empty() ? NULL : g.CurrentWindowStack.back();
}
static void FocusWindow(ImGuiWindow* window)
{
ImGuiState& g = GImGui;
g.FocusedWindow = window;
// Move to front
for (size_t i = 0; i < g.Windows.size(); i++)
if (g.Windows[i] == window)
{
g.Windows.erase(g.Windows.begin() + i);
break;
}
g.Windows.push_back(window);
}
void PushItemWidth(float item_width)
{
ImGuiWindow* window = GetCurrentWindow();
item_width = (float)(int)item_width;
window->DC.ItemWidth.push_back(item_width > 0.0f ? item_width : window->ItemWidthDefault);
}
void PopItemWidth()
{
ImGuiWindow* window = GetCurrentWindow();
window->DC.ItemWidth.pop_back();
}
float GetItemWidth()
{
ImGuiWindow* window = GetCurrentWindow();
return window->DC.ItemWidth.back();
}
void PushAllowKeyboardFocus(bool allow_keyboard_focus)
{
ImGuiWindow* window = GetCurrentWindow();
window->DC.AllowKeyboardFocus.push_back(allow_keyboard_focus);
}
void PopAllowKeyboardFocus()
{
ImGuiWindow* window = GetCurrentWindow();
window->DC.AllowKeyboardFocus.pop_back();
}
void PushStyleColor(ImGuiCol idx, const ImVec4& col)
{
ImGuiState& g = GImGui;
ImGuiWindow* window = GetCurrentWindow();
ImGuiColMod backup;
backup.Col = idx;
backup.PreviousValue = g.Style.Colors[idx];
window->DC.ColorModifiers.push_back(backup);
g.Style.Colors[idx] = col;
}
void PopStyleColor()
{
ImGuiState& g = GImGui;
ImGuiWindow* window = GetCurrentWindow();
ImGuiColMod& backup = window->DC.ColorModifiers.back();
g.Style.Colors[backup.Col] = backup.PreviousValue;
window->DC.ColorModifiers.pop_back();
}
const char* GetStyleColorName(ImGuiCol idx)
{
// Create with regexp: ImGuiCol_{.*}, --> case ImGuiCol_\1: return "\1";
switch (idx)
{
case ImGuiCol_Text: return "Text";
case ImGuiCol_WindowBg: return "WindowBg";
case ImGuiCol_Border: return "Border";
case ImGuiCol_BorderShadow: return "BorderShadow";
case ImGuiCol_FrameBg: return "FrameBg";
case ImGuiCol_TitleBg: return "TitleBg";
case ImGuiCol_TitleBgCollapsed: return "TitleBgCollapsed";
case ImGuiCol_ScrollbarBg: return "ScrollbarBg";
case ImGuiCol_ScrollbarGrab: return "ScrollbarGrab";
case ImGuiCol_ScrollbarGrabHovered: return "ScrollbarGrabHovered";
case ImGuiCol_ScrollbarGrabActive: return "ScrollbarGrabActive";
case ImGuiCol_ComboBg: return "ComboBg";
case ImGuiCol_CheckHovered: return "CheckHovered";
case ImGuiCol_CheckActive: return "CheckActive";
case ImGuiCol_SliderGrab: return "SliderGrab";
case ImGuiCol_SliderGrabActive: return "SliderGrabActive";
case ImGuiCol_Button: return "Button";
case ImGuiCol_ButtonHovered: return "ButtonHovered";
case ImGuiCol_ButtonActive: return "ButtonActive";
case ImGuiCol_Header: return "Header";
case ImGuiCol_HeaderHovered: return "HeaderHovered";
case ImGuiCol_HeaderActive: return "HeaderActive";
case ImGuiCol_Column: return "Column";
case ImGuiCol_ColumnHovered: return "ColumnHovered";
case ImGuiCol_ColumnActive: return "ColumnActive";
case ImGuiCol_ResizeGrip: return "ResizeGrip";
case ImGuiCol_ResizeGripHovered: return "ResizeGripHovered";
case ImGuiCol_ResizeGripActive: return "ResizeGripActive";
case ImGuiCol_CloseButton: return "CloseButton";
case ImGuiCol_CloseButtonHovered: return "CloseButtonHovered";
case ImGuiCol_CloseButtonActive: return "CloseButtonActive";
case ImGuiCol_PlotLines: return "PlotLines";
case ImGuiCol_PlotLinesHovered: return "PlotLinesHovered";
case ImGuiCol_PlotHistogram: return "PlotHistogram";
case ImGuiCol_PlotHistogramHovered: return "PlotHistogramHovered";
case ImGuiCol_TextSelectedBg: return "TextSelectedBg";
case ImGuiCol_TooltipBg: return "TooltipBg";
}
IM_ASSERT(0);
return "Unknown";
}
bool GetWindowIsFocused()
{
ImGuiState& g = GImGui;
ImGuiWindow* window = GetCurrentWindow();
return g.FocusedWindow == window;
}
float GetWindowWidth()
{
ImGuiWindow* window = GetCurrentWindow();
return window->Size.x;
}
ImVec2 GetWindowPos()
{
ImGuiWindow* window = GetCurrentWindow();
return window->Pos;
}
void SetWindowPos(const ImVec2& pos)
{
ImGuiWindow* window = GetCurrentWindow();
const ImVec2 old_pos = window->Pos;
window->PosFloat = pos;
window->Pos = ImVec2((float)(int)window->PosFloat.x, (float)(int)window->PosFloat.y);
// If we happen to move the window while it is showing (which is a bad idea) let's at least offset the cursor
window->DC.CursorPos += (window->Pos - old_pos);
}
ImVec2 GetWindowSize()
{
ImGuiWindow* window = GetCurrentWindow();
return window->Size;
}
ImVec2 GetWindowContentRegionMin()
{
ImGuiWindow* window = GetCurrentWindow();
return ImVec2(0, window->TitleBarHeight()) + window->WindowPadding();
}
ImVec2 GetWindowContentRegionMax()
{
ImGuiWindow* window = GetCurrentWindow();
ImVec2 m = window->Size - window->WindowPadding();
if (window->ScrollbarY)
m.x -= GImGui.Style.ScrollBarWidth;
return m;
}
float GetTextLineHeight()
{
ImGuiWindow* window = GetCurrentWindow();
return window->FontSize();
}
float GetTextLineSpacing()
{
ImGuiState& g = GImGui;
ImGuiWindow* window = GetCurrentWindow();
return window->FontSize() + g.Style.ItemSpacing.y;
}
ImDrawList* GetWindowDrawList()
{
ImGuiWindow* window = GetCurrentWindow();
return window->DrawList;
}
void SetFontScale(float scale)
{
ImGuiWindow* window = GetCurrentWindow();
window->FontScale = scale;
}
ImVec2 GetCursorPos()
{
ImGuiWindow* window = GetCurrentWindow();
return window->DC.CursorPos - window->Pos;
}
void SetCursorPos(const ImVec2& pos)
{
ImGuiWindow* window = GetCurrentWindow();
window->DC.CursorPos = window->Pos + pos;
}
ImVec2 GetCursorScreenPos()
{
ImGuiWindow* window = GetCurrentWindow();
return window->DC.CursorPos;
}
void SetScrollPosHere()
{
ImGuiWindow* window = GetCurrentWindow();
window->NextScrollY = (window->DC.CursorPos.y + window->ScrollY) - (window->Pos.y + window->SizeFull.y * 0.5f) - (window->TitleBarHeight() + window->WindowPadding().y);
}
void SetTreeStateStorage(ImGuiStorage* tree)
{
ImGuiWindow* window = GetCurrentWindow();
window->DC.StateStorage = tree ? tree : &window->StateStorage;
}
ImGuiStorage* GetTreeStateStorage()
{
ImGuiWindow* window = GetCurrentWindow();
return window->DC.StateStorage;
}
void TextV(const char* fmt, va_list args)
{
ImGuiWindow* window = GetCurrentWindow();
if (window->SkipItems)
return;
static char buf[1024];
const char* text_end = buf + ImFormatStringV(buf, IM_ARRAYSIZE(buf), fmt, args);
TextUnformatted(buf, text_end);
}
void Text(const char* fmt, ...)
{
va_list args;
va_start(args, fmt);
TextV(fmt, args);
va_end(args);
}
void TextColored(const ImVec4& col, const char* fmt, ...)
{
ImGui::PushStyleColor(ImGuiCol_Text, col);
va_list args;
va_start(args, fmt);
TextV(fmt, args);
va_end(args);
ImGui::PopStyleColor();
}
void TextUnformatted(const char* text, const char* text_end)
{
ImGuiState& g = GImGui;
ImGuiWindow* window = GetCurrentWindow();
if (window->SkipItems)
return;
IM_ASSERT(text != NULL);
const char* text_begin = text;
if (text_end == NULL)
text_end = text + strlen(text);
if (text_end - text > 2000)
{
// Long text!
// Perform manual coarse clipping to optimize for long multi-line text
// From this point we will only compute the width of lines that are visible.