504 lines
15 KiB
C++
504 lines
15 KiB
C++
// dear imgui, v1.64 WIP
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// (widgets code)
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#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
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#define _CRT_SECURE_NO_WARNINGS
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#endif
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#include "imgui.h"
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#ifndef IMGUI_DEFINE_MATH_OPERATORS
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#define IMGUI_DEFINE_MATH_OPERATORS
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#endif
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#include "imgui_internal.h"
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#include <ctype.h> // toupper, isprint
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// Visual Studio warnings
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#ifdef _MSC_VER
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#pragma warning (disable: 4127) // condition expression is constant
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#pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
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#endif
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// Clang/GCC warnings with -Weverything
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#ifdef __clang__
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#pragma clang diagnostic ignored "-Wformat-nonliteral" // warning : format string is not a string literal // passing non-literal to vsnformat(). yes, user passing incorrect format strings can crash the code.
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#pragma clang diagnostic ignored "-Wsign-conversion" // warning : implicit conversion changes signedness //
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#elif defined(__GNUC__)
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#pragma GCC diagnostic ignored "-Wformat-nonliteral" // warning: format not a string literal, format string not checked
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#if __GNUC__ >= 8
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#pragma GCC diagnostic ignored "-Wclass-memaccess" // warning: 'memset/memcpy' clearing/writing an object of type 'xxxx' with no trivial copy-assignment; use assignment or value-initialization instead
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#endif
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#endif
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//-------------------------------------------------------------------------
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// Forward Declarations
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//-------------------------------------------------------------------------
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//-------------------------------------------------------------------------
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// SHARED UTILITIES
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//-------------------------------------------------------------------------
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//-------------------------------------------------------------------------
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// WIDGETS: Text
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// - TextUnformatted()
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// - Text()
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// - TextV()
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// - TextColored()
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// - TextColoredV()
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// - TextDisabled()
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// - TextDisabledV()
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// - TextWrapped()
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// - TextWrappedV()
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// - LabelText()
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// - LabelTextV()
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// - BulletText()
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// - BulletTextV()
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//-------------------------------------------------------------------------
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void ImGui::TextUnformatted(const char* text, const char* text_end)
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{
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ImGuiWindow* window = GetCurrentWindow();
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if (window->SkipItems)
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return;
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ImGuiContext& g = *GImGui;
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IM_ASSERT(text != NULL);
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const char* text_begin = text;
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if (text_end == NULL)
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text_end = text + strlen(text); // FIXME-OPT
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const ImVec2 text_pos(window->DC.CursorPos.x, window->DC.CursorPos.y + window->DC.CurrentLineTextBaseOffset);
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const float wrap_pos_x = window->DC.TextWrapPos;
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const bool wrap_enabled = wrap_pos_x >= 0.0f;
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if (text_end - text > 2000 && !wrap_enabled)
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{
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// Long text!
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// Perform manual coarse clipping to optimize for long multi-line text
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// From this point we will only compute the width of lines that are visible. Optimization only available when word-wrapping is disabled.
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// We also don't vertically center the text within the line full height, which is unlikely to matter because we are likely the biggest and only item on the line.
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const char* line = text;
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const float line_height = GetTextLineHeight();
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const ImRect clip_rect = window->ClipRect;
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ImVec2 text_size(0,0);
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if (text_pos.y <= clip_rect.Max.y)
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{
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ImVec2 pos = text_pos;
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// Lines to skip (can't skip when logging text)
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if (!g.LogEnabled)
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{
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int lines_skippable = (int)((clip_rect.Min.y - text_pos.y) / line_height);
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if (lines_skippable > 0)
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{
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int lines_skipped = 0;
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while (line < text_end && lines_skipped < lines_skippable)
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{
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const char* line_end = strchr(line, '\n');
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if (!line_end)
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line_end = text_end;
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line = line_end + 1;
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lines_skipped++;
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}
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pos.y += lines_skipped * line_height;
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}
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}
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// Lines to render
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if (line < text_end)
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{
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ImRect line_rect(pos, pos + ImVec2(FLT_MAX, line_height));
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while (line < text_end)
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{
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const char* line_end = strchr(line, '\n');
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if (IsClippedEx(line_rect, 0, false))
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break;
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const ImVec2 line_size = CalcTextSize(line, line_end, false);
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text_size.x = ImMax(text_size.x, line_size.x);
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RenderText(pos, line, line_end, false);
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if (!line_end)
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line_end = text_end;
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line = line_end + 1;
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line_rect.Min.y += line_height;
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line_rect.Max.y += line_height;
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pos.y += line_height;
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}
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// Count remaining lines
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int lines_skipped = 0;
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while (line < text_end)
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{
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const char* line_end = strchr(line, '\n');
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if (!line_end)
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line_end = text_end;
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line = line_end + 1;
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lines_skipped++;
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}
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pos.y += lines_skipped * line_height;
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}
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text_size.y += (pos - text_pos).y;
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}
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ImRect bb(text_pos, text_pos + text_size);
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ItemSize(bb);
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ItemAdd(bb, 0);
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}
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else
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{
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const float wrap_width = wrap_enabled ? CalcWrapWidthForPos(window->DC.CursorPos, wrap_pos_x) : 0.0f;
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const ImVec2 text_size = CalcTextSize(text_begin, text_end, false, wrap_width);
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// Account of baseline offset
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ImRect bb(text_pos, text_pos + text_size);
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ItemSize(text_size);
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if (!ItemAdd(bb, 0))
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return;
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// Render (we don't hide text after ## in this end-user function)
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RenderTextWrapped(bb.Min, text_begin, text_end, wrap_width);
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}
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}
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void ImGui::Text(const char* fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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TextV(fmt, args);
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va_end(args);
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}
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void ImGui::TextV(const char* fmt, va_list args)
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{
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ImGuiWindow* window = GetCurrentWindow();
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if (window->SkipItems)
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return;
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ImGuiContext& g = *GImGui;
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const char* text_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
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TextUnformatted(g.TempBuffer, text_end);
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}
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void ImGui::TextColored(const ImVec4& col, const char* fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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TextColoredV(col, fmt, args);
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va_end(args);
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}
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void ImGui::TextColoredV(const ImVec4& col, const char* fmt, va_list args)
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{
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PushStyleColor(ImGuiCol_Text, col);
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TextV(fmt, args);
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PopStyleColor();
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}
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void ImGui::TextDisabled(const char* fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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TextDisabledV(fmt, args);
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va_end(args);
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}
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void ImGui::TextDisabledV(const char* fmt, va_list args)
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{
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PushStyleColor(ImGuiCol_Text, GImGui->Style.Colors[ImGuiCol_TextDisabled]);
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TextV(fmt, args);
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PopStyleColor();
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}
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void ImGui::TextWrapped(const char* fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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TextWrappedV(fmt, args);
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va_end(args);
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}
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void ImGui::TextWrappedV(const char* fmt, va_list args)
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{
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bool need_wrap = (GImGui->CurrentWindow->DC.TextWrapPos < 0.0f); // Keep existing wrap position is one ia already set
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if (need_wrap) PushTextWrapPos(0.0f);
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TextV(fmt, args);
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if (need_wrap) PopTextWrapPos();
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}
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void ImGui::LabelText(const char* label, const char* fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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LabelTextV(label, fmt, args);
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va_end(args);
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}
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// Add a label+text combo aligned to other label+value widgets
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void ImGui::LabelTextV(const char* label, const char* fmt, va_list args)
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{
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ImGuiWindow* window = GetCurrentWindow();
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if (window->SkipItems)
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return;
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ImGuiContext& g = *GImGui;
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const ImGuiStyle& style = g.Style;
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const float w = CalcItemWidth();
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const ImVec2 label_size = CalcTextSize(label, NULL, true);
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const ImRect value_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y + style.FramePadding.y*2));
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const ImRect total_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w + (label_size.x > 0.0f ? style.ItemInnerSpacing.x : 0.0f), style.FramePadding.y*2) + label_size);
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ItemSize(total_bb, style.FramePadding.y);
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if (!ItemAdd(total_bb, 0))
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return;
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// Render
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const char* value_text_begin = &g.TempBuffer[0];
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const char* value_text_end = value_text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
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RenderTextClipped(value_bb.Min, value_bb.Max, value_text_begin, value_text_end, NULL, ImVec2(0.0f,0.5f));
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if (label_size.x > 0.0f)
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RenderText(ImVec2(value_bb.Max.x + style.ItemInnerSpacing.x, value_bb.Min.y + style.FramePadding.y), label);
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}
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void ImGui::BulletText(const char* fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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BulletTextV(fmt, args);
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va_end(args);
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}
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// Text with a little bullet aligned to the typical tree node.
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void ImGui::BulletTextV(const char* fmt, va_list args)
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{
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ImGuiWindow* window = GetCurrentWindow();
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if (window->SkipItems)
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return;
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ImGuiContext& g = *GImGui;
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const ImGuiStyle& style = g.Style;
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const char* text_begin = g.TempBuffer;
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const char* text_end = text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args);
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const ImVec2 label_size = CalcTextSize(text_begin, text_end, false);
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const float text_base_offset_y = ImMax(0.0f, window->DC.CurrentLineTextBaseOffset); // Latch before ItemSize changes it
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const float line_height = ImMax(ImMin(window->DC.CurrentLineSize.y, g.FontSize + g.Style.FramePadding.y*2), g.FontSize);
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const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(g.FontSize + (label_size.x > 0.0f ? (label_size.x + style.FramePadding.x*2) : 0.0f), ImMax(line_height, label_size.y))); // Empty text doesn't add padding
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ItemSize(bb);
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if (!ItemAdd(bb, 0))
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return;
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// Render
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RenderBullet(bb.Min + ImVec2(style.FramePadding.x + g.FontSize*0.5f, line_height*0.5f));
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RenderText(bb.Min+ImVec2(g.FontSize + style.FramePadding.x*2, text_base_offset_y), text_begin, text_end, false);
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}
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//-------------------------------------------------------------------------
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// WIDGETS: Main
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// - ButtonBehavior() [Internal]
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// - Button()
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// - SmallButton()
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// - InvisibleButton()
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// - ArrowButton()
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// - CloseButton() [Internal]
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// - CollapseButton() [Internal]
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// - Image()
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// - ImageButton()
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// - Checkbox()
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// - CheckboxFlags()
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// - RadioButton()
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// - ProgressBar()
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// - Bullet()
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//-------------------------------------------------------------------------
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//-------------------------------------------------------------------------
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// WIDGETS: Combo Box
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// - BeginCombo()
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// - EndCombo()
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// - Combo()
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//-------------------------------------------------------------------------
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//-------------------------------------------------------------------------
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// WIDGETS: Data Type and Data Formatting Helpers [Internal]
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// - PatchFormatStringFloatToInt()
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// - DataTypeFormatString()
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// - DataTypeApplyOp()
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// - DataTypeApplyOpFromText()
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// - GetMinimumStepAtDecimalPrecision
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// - RoundScalarWithFormat<>()
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//-------------------------------------------------------------------------
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//-------------------------------------------------------------------------
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// WIDGETS: Drags
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// - DragBehaviorT<>() [Internal]
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// - DragBehavior() [Internal]
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// - DragScalar()
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// - DragScalarN()
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// - DragFloat()
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// - DragFloat2()
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// - DragFloat3()
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// - DragFloat4()
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// - DragFloatRange2()
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// - DragInt()
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// - DragInt2()
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// - DragInt3()
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// - DragInt4()
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// - DragIntRange2()
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//-------------------------------------------------------------------------
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//-------------------------------------------------------------------------
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// WIDGETS: Sliders
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// - SliderBehaviorT<>() [Internal]
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// - SliderBehavior() [Internal]
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// - SliderScalar()
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// - SliderScalarN()
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// - SliderFloat()
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// - SliderFloat2()
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// - SliderFloat3()
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// - SliderFloat4()
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// - SliderAngle()
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// - SliderInt()
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// - SliderInt2()
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// - SliderInt3()
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// - SliderInt4()
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// - VSliderScalar()
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// - VSliderFloat()
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// - VSliderInt()
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//-------------------------------------------------------------------------
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//-------------------------------------------------------------------------
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// WIDGETS: Inputs (_excepted InputText_)
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// - ImParseFormatFindStart()
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// - ImParseFormatFindEnd()
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// - ImParseFormatTrimDecorations()
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// - ImParseFormatPrecision()
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// - InputScalarAsWidgetReplacement() [Internal]
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// - InputScalar()
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// - InputScalarN()
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// - InputFloat()
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// - InputFloat2()
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// - InputFloat3()
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// - InputFloat4()
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// - InputInt()
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// - InputInt2()
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// - InputInt3()
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// - InputInt4()
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// - InputDouble()
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//-------------------------------------------------------------------------
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//-------------------------------------------------------------------------
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// WIDGETS: InputText
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// - InputText()
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// - InputTextMultiline()
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// - InputTextEx() [Internal]
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//-------------------------------------------------------------------------
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//-------------------------------------------------------------------------
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// WIDGETS: Color Editor / Picker
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// - ColorEdit3()
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// - ColorEdit4()
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// - ColorPicker3()
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// - RenderColorRectWithAlphaCheckerboard() [Internal]
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// - ColorPicker4()
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// - ColorButton()
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// - SetColorEditOptions()
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// - ColorTooltip() [Internal]
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// - ColorEditOptionsPopup() [Internal]
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// - ColorPickerOptionsPopup() [Internal]
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//-------------------------------------------------------------------------
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//-------------------------------------------------------------------------
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// WIDGETS: Trees
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// - TreeNode()
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// - TreeNodeV()
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// - TreeNodeEx()
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// - TreeNodeExV()
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// - TreeNodeBehavior() [Internal]
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// - TreePush()
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// - TreePop()
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// - TreeAdvanceToLabelPos()
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// - GetTreeNodeToLabelSpacing()
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// - SetNextTreeNodeOpen()
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// - CollapsingHeader()
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//-------------------------------------------------------------------------
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//-------------------------------------------------------------------------
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// WIDGETS: Selectables
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// - Selectable()
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//-------------------------------------------------------------------------
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//-------------------------------------------------------------------------
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// WIDGETS: List Box
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// - ListBox()
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// - ListBoxHeader()
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// - ListBoxFooter()
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//-------------------------------------------------------------------------
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//-------------------------------------------------------------------------
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// WIDGETS: Data Plotting
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// - PlotEx() [Internal]
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// - PlotLines()
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// - PlotHistogram()
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//-------------------------------------------------------------------------
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//-------------------------------------------------------------------------
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// WIDGETS: Value() helpers
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// - Value()
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//-------------------------------------------------------------------------
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//-------------------------------------------------------------------------
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// WIDGETS: Menus
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// - BeginMainMenuBar()
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// - EndMainMenuBar()
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// - BeginMenuBar()
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// - EndMenuBar()
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// - BeginMenu()
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// - EndMenu()
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// - MenuItem()
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//-------------------------------------------------------------------------
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