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Updated ImGui.

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This commit is contained in:
Branimir Karadžić
2017-08-09 19:31:12 -07:00
parent e7c28473fe
commit c366a42a82
3 changed files with 94 additions and 51 deletions
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90
3rdparty/ocornut-imgui/imgui.cpp vendored
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@@ -26,11 +26,12 @@
- I integrated ImGui in my engine and the text or lines are blurry..
- I integrated ImGui in my engine and some elements are clipping or disappearing when I move windows around..
- How can I have multiple widgets with the same label? Can I have widget without a label? (Yes). A primer on the purpose of labels/IDs.
- How can I tell when ImGui wants my mouse/keyboard inputs and when I can pass them to my application?
- How can I tell when ImGui wants my mouse/keyboard inputs VS when I can pass them to my application?
- How can I load a different font than the default?
- How can I easily use icons in my application?
- How can I load multiple fonts?
- How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?
- How can I preserve my ImGui context across reloading a DLL? (loss of the global/static variables)
- How can I use the drawing facilities without an ImGui window? (using ImDrawList API)
- ISSUES & TODO-LIST
- CODE
@@ -158,7 +159,8 @@
Here is a change-log of API breaking changes, if you are using one of the functions listed, expect to have to fix some code.
Also read releases logs https://github.com/ocornut/imgui/releases for more details.
- 2017/07/30 (1.51) - removed ColorEditMode() and ImGuiColorEditMode in favor of ImGuiColorEditFlags and parameters to the various Color*() functions. The SetColorEditOptions() allows to initialize default but the user can still change them with right-click context menu.
- 2017/08/09 (1.51) - removed ValueColor() helpers, they are equivalent to calling Text(label) + SameLine() + ColorButton().
- 2017/08/08 (1.51) - removed ColorEditMode() and ImGuiColorEditMode in favor of ImGuiColorEditFlags and parameters to the various Color*() functions. The SetColorEditOptions() allows to initialize default but the user can still change them with right-click context menu.
- changed prototype of 'ColorEdit4(const char* label, float col[4], bool show_alpha = true)' to 'ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flags = 0)', where passing flags = 0x01 is a safe no-op (hello dodgy backward compatibility!). - check and run the demo window, under "Color/Picker Widgets", to understand the various new options.
- changed prototype of rarely used 'ColorButton(ImVec4 col, bool small_height = false, bool outline_border = true)' to 'ColorButton(const char* desc_id, ImVec4 col, ImGuiColorEditFlags flags = 0, ImVec2 size = ImVec2(0,0))'
- 2017/07/20 (1.51) - removed IsPosHoveringAnyWindow(ImVec2), which was partly broken and misleading. ASSERT + redirect user to io.WantCaptureMouse
@@ -405,7 +407,7 @@
e.g. when displaying a single object that may change over time (1-1 relationship), using a static string as ID will preserve your node open/closed state when the targeted object change.
e.g. when displaying a list of objects, using indices or pointers as ID will preserve the node open/closed state differently. experiment and see what makes more sense!
Q: How can I tell when ImGui wants my mouse/keyboard inputs and when I can pass them to my application?
Q: How can I tell when ImGui wants my mouse/keyboard inputs VS when I can pass them to my application?
A: You can read the 'io.WantCaptureMouse'/'io.WantCaptureKeyboard'/'ioWantTextInput' flags from the ImGuiIO structure.
- When 'io.WantCaptureMouse' or 'io.WantCaptureKeyboard' flags are set you may want to discard/hide the inputs from the rest of your application.
- When 'io.WantTextInput' is set to may want to notify your OS to popup an on-screen keyboard, if available (e.g. on a mobile phone, or console without a keyboard).
@@ -456,19 +458,33 @@
Q: How can I display and input non-Latin characters such as Chinese, Japanese, Korean, Cyrillic?
A: When loading a font, pass custom Unicode ranges to specify the glyphs to load.
All your strings needs to use UTF-8 encoding. Specifying literal in your source code using a local code page (such as CP-923 for Japanese or CP-1251 for Cyrillic) will not work.
In C++11 you can encode a string literal in UTF-8 by using the u8"hello" syntax. Otherwise you can convert yourself to UTF-8 or load text data from file already saved as UTF-8.
You can also try to remap your local codepage characters to their Unicode codepoint using font->AddRemapChar(), but international users may have problems reading/editing your source code.
io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels, NULL, io.Fonts->GetGlyphRangesJapanese()); // Load Japanese characters
io.Fonts->GetTexDataAsRGBA32() or GetTexDataAsAlpha8()
io.ImeWindowHandle = MY_HWND; // To input using Microsoft IME, give ImGui the hwnd of your application
// Add default Japanese ranges
io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels, NULL, io.Fonts->GetGlyphRangesJapanese());
// Or create your own custom ranges (e.g. for a game you can feed your entire game script and only build the characters the game need)
ImVector<ImWchar> ranges;
ImFontAtlas::GlyphRangesBuilder builder;
builder.AddText("Hello world"); // Add a string (here "Hello world" contains 7 unique characters)
builder.AddChar(0x7262); // Add a specific character
builder.AddRanges(io.Fonts->GetGlyphRangesJapanese()); // Add one of the default ranges
builder.BuildRanges(&ranges); // Build the final result (ordered ranges with all the unique characters submitted)
io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels, NULL, ranges.Data);
As for text input, depends on you passing the right character code to io.AddInputCharacter(). The example applications do that.
All your strings needs to use UTF-8 encoding. In C++11 you can encode a string literal in UTF-8 by using the u8"hello" syntax.
Specifying literal in your source code using a local code page (such as CP-923 for Japanese or CP-1251 for Cyrillic) will NOT work!
Otherwise you can convert yourself to UTF-8 or load text data from file already saved as UTF-8.
Text input: it is up to your application to pass the right character code to io.AddInputCharacter(). The applications in examples/ are doing that.
For languages using IME, on Windows you can copy the Hwnd of your application to io.ImeWindowHandle. The default implementation of io.ImeSetInputScreenPosFn() on Windows will set your IME position correctly.
Q: How can I preserve my ImGui context across reloading a DLL? (loss of the global/static variables)
A: Create your own context 'ctx = CreateContext()' + 'SetCurrentContext(ctx)' and your own font atlas 'ctx->GetIO().Fonts = new ImFontAtlas()' so you don't rely on the default globals.
Q: How can I use the drawing facilities without an ImGui window? (using ImDrawList API)
A: The easiest way is to create a dummy window. Call Begin() with NoTitleBar|NoResize|NoMove|NoScrollbar|NoSavedSettings|NoInputs flag, zero background alpha,
then retrieve the ImDrawList* via GetWindowDrawList() and draw to it in any way you like.
You can also perfectly create a standalone ImDrawList instance _but_ you need ImGui to be initialized because ImDrawList pulls from ImGui data to retrieve the coordinates of the white pixel.
- tip: the construct 'IMGUI_ONCE_UPON_A_FRAME { ... }' will run the block of code only once a frame. You can use it to quickly add custom UI in the middle of a deep nested inner loop in your code.
- tip: you can create widgets without a Begin()/End() block, they will go in an implicit window called "Debug"
@@ -745,12 +761,13 @@ static void ImeSetInputScreenPosFn_DefaultImpl(int x, int y);
// Context
//-----------------------------------------------------------------------------
// Default font atlas storage .
// Default font atlas storage.
// New contexts always point by default to this font atlas. It can be changed by reassigning the GetIO().Fonts variable.
static ImFontAtlas GImDefaultFontAtlas;
// Default context storage + current context pointer.
// Implicitely used by all ImGui functions. Always assumed to be != NULL. Change to a different context by calling ImGui::SetCurrentContext()
// If you are hot-reloading this code in a DLL you will lose the static/global variables. Create your own context+font atlas instead of relying on those default (see FAQ entry "How can I preserve my ImGui context across reloading a DLL?").
// ImGui is currently not thread-safe because of this variable. If you want thread-safety to allow N threads to access N different contexts, you might work around it by:
// - Having multiple instances of the ImGui code compiled inside different namespace (easiest/safest, if you have a finite number of contexts)
// - or: Changing this variable to be TLS. You may #define GImGui in imconfig.h for further custom hackery. Future development aim to make this context pointer explicit to all calls. Also read https://github.com/ocornut/imgui/issues/586
@@ -3091,20 +3108,13 @@ void ImGui::RenderCheckMark(ImVec2 pos, ImU32 col)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = GetCurrentWindow();
ImVec2 a, b, c;
float start_x = (float)(int)(g.FontSize * 0.307f + 0.5f);
float rem_third = (float)(int)((g.FontSize - start_x) / 3.0f);
a.x = pos.x + 0.5f + start_x;
b.x = a.x + rem_third;
c.x = a.x + rem_third * 3.0f;
b.y = pos.y - 1.0f + (float)(int)(g.Font->Ascent * (g.FontSize / g.Font->FontSize) + 0.5f) + (float)(int)(g.Font->DisplayOffset.y);
a.y = b.y - rem_third;
c.y = b.y - rem_third * 2.0f;
window->DrawList->PathLineTo(a);
window->DrawList->PathLineTo(b);
window->DrawList->PathLineTo(c);
float bx = pos.x + 0.5f + start_x + rem_third;
float by = pos.y - 1.0f + (float)(int)(g.Font->Ascent * (g.FontSize / g.Font->FontSize) + 0.5f) + (float)(int)(g.Font->DisplayOffset.y);
window->DrawList->PathLineTo(ImVec2(bx - rem_third, by - rem_third));
window->DrawList->PathLineTo(ImVec2(bx, by));
window->DrawList->PathLineTo(ImVec2(bx + rem_third*2, by - rem_third*2));
window->DrawList->PathStroke(col, false);
}
@@ -9512,20 +9522,19 @@ bool ImGui::ColorPicker4(const char* label, float col[4], ImGuiColorEditFlags fl
PushID(label);
BeginGroup();
if ((flags & ImGuiColorEditFlags_NoSidePreview) == 0)
if (!(flags & ImGuiColorEditFlags_NoSidePreview))
flags |= ImGuiColorEditFlags_NoSmallPreview;
if ((flags & ImGuiColorEditFlags_NoOptions) == 0)
{
// Context menu: display and store options.
// Context menu: display and store options.
if (!(flags & ImGuiColorEditFlags_NoOptions))
ColorPickerOptionsPopup(flags, col);
// Read stored options
if ((flags & ImGuiColorEditFlags__PickerMask) == 0)
flags |= ((g.ColorEditOptions & ImGuiColorEditFlags__PickerMask) ? g.ColorEditOptions : ImGuiColorEditFlags__OptionsDefault) & ImGuiColorEditFlags__PickerMask;
IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__PickerMask))); // Check that only 1 is selected
// Read stored options
if (!(flags & ImGuiColorEditFlags__PickerMask))
flags |= ((g.ColorEditOptions & ImGuiColorEditFlags__PickerMask) ? g.ColorEditOptions : ImGuiColorEditFlags__OptionsDefault) & ImGuiColorEditFlags__PickerMask;
IM_ASSERT(ImIsPowerOfTwo((int)(flags & ImGuiColorEditFlags__PickerMask))); // Check that only 1 is selected
if (!(flags & ImGuiColorEditFlags_NoOptions))
flags |= (g.ColorEditOptions & ImGuiColorEditFlags_AlphaBar);
}
// Setup
bool alpha_bar = (flags & ImGuiColorEditFlags_AlphaBar) && !(flags & ImGuiColorEditFlags_NoAlpha);
@@ -9667,7 +9676,7 @@ bool ImGui::ColorPicker4(const char* label, float col[4], ImGuiColorEditFlags fl
if ((flags & ImGuiColorEditFlags_NoInputs) == 0)
{
PushItemWidth((alpha_bar ? bar1_pos_x : bar0_pos_x) + bars_width - picker_pos.x);
ImGuiColorEditFlags sub_flags_to_forward = ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoSmallPreview | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf;
ImGuiColorEditFlags sub_flags_to_forward = ImGuiColorEditFlags__DataTypeMask | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoOptions | ImGuiColorEditFlags_NoSmallPreview | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf;
ImGuiColorEditFlags sub_flags = (flags & sub_flags_to_forward) | ImGuiColorEditFlags_NoPicker;
if (flags & ImGuiColorEditFlags_RGB || (flags & ImGuiColorEditFlags__InputsMask) == 0)
value_changed |= ColorEdit4("##rgb", col, sub_flags | ImGuiColorEditFlags_RGB);
@@ -10241,21 +10250,6 @@ void ImGui::Value(const char* prefix, float v, const char* float_format)
}
}
// FIXME: May want to remove those helpers?
void ImGui::ValueColor(const char* prefix, const ImVec4& v)
{
Text("%s: (%.2f,%.2f,%.2f,%.2f)", prefix, v.x, v.y, v.z, v.w);
SameLine();
ColorButton(prefix, v);
}
void ImGui::ValueColor(const char* prefix, ImU32 v)
{
Text("%s: %08X", prefix, v);
SameLine();
ColorButton(prefix, ColorConvertU32ToFloat4(v));
}
//-----------------------------------------------------------------------------
// PLATFORM DEPENDENT HELPERS
//-----------------------------------------------------------------------------

17
3rdparty/ocornut-imgui/imgui.h vendored
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@@ -363,8 +363,6 @@ namespace ImGui
IMGUI_API void Value(const char* prefix, int v);
IMGUI_API void Value(const char* prefix, unsigned int v);
IMGUI_API void Value(const char* prefix, float v, const char* float_format = NULL);
IMGUI_API void ValueColor(const char* prefix, const ImVec4& v);
IMGUI_API void ValueColor(const char* prefix, ImU32 v);
// Tooltips
IMGUI_API void SetTooltip(const char* fmt, ...) IM_PRINTFARGS(1); // set text tooltip under mouse-cursor, typically use with ImGui::IsItemHovered(). overidde any previous call to SetTooltip().
@@ -1354,7 +1352,7 @@ struct ImFontAtlas
void SetTexID(ImTextureID id) { TexID = id; }
// Helpers to retrieve list of common Unicode ranges (2 value per range, values are inclusive, zero-terminated list)
// NB: Make sure that your string are UTF-8 and NOT in your local code page. In C++11, you can create a UTF-8 string literally using the u8"Hello world" syntax. See FAQ for details.
// NB: Make sure that your string are UTF-8 and NOT in your local code page. In C++11, you can create UTF-8 string literal using the u8"Hello world" syntax. See FAQ for details.
IMGUI_API const ImWchar* GetGlyphRangesDefault(); // Basic Latin, Extended Latin
IMGUI_API const ImWchar* GetGlyphRangesKorean(); // Default + Korean characters
IMGUI_API const ImWchar* GetGlyphRangesJapanese(); // Default + Hiragana, Katakana, Half-Width, Selection of 1946 Ideographs
@@ -1362,6 +1360,19 @@ struct ImFontAtlas
IMGUI_API const ImWchar* GetGlyphRangesCyrillic(); // Default + about 400 Cyrillic characters
IMGUI_API const ImWchar* GetGlyphRangesThai(); // Default + Thai characters
// Helpers to build glyph ranges from text data. Feed all your application strings/characters to it then call BuildRanges().
struct GlyphRangesBuilder
{
ImVector<unsigned char> UsedChars; // Store 1-bit per Unicode code point (0=unused, 1=used)
GlyphRangesBuilder() { UsedChars.resize(0x10000 / 8); memset(UsedChars.Data, 0, 0x10000 / 8); }
bool GetBit(int n) { return (UsedChars[n >> 3] & (1 << (n & 7))) != 0; }
void SetBit(int n) { UsedChars[n >> 3] |= 1 << (n & 7); } // Set bit 'c' in the array
void AddChar(ImWchar c) { SetBit(c); } // Add character
IMGUI_API void AddText(const char* text, const char* text_end = NULL); // Add string (each character of the UTF-8 string are added)
IMGUI_API void AddRanges(const ImWchar* ranges); // Add ranges, e.g. builder.AddRanges(ImFontAtlas::GetGlyphRangesDefault) to force add all of ASCII/Latin+Ext
IMGUI_API void BuildRanges(ImVector<ImWchar>* out_ranges); // Output new ranges
};
// Members
// (Access texture data via GetTexData*() calls which will setup a default font for you.)
ImTextureID TexID; // User data to refer to the texture once it has been uploaded to user's graphic systems. It is passed back to you during rendering via the ImDrawCmd structure.

38
3rdparty/ocornut-imgui/imgui_draw.cpp vendored
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@@ -1696,6 +1696,44 @@ const ImWchar* ImFontAtlas::GetGlyphRangesThai()
return &ranges[0];
}
//-----------------------------------------------------------------------------
// ImFontAtlas::GlyphRangesBuilder
//-----------------------------------------------------------------------------
void ImFontAtlas::GlyphRangesBuilder::AddText(const char* text, const char* text_end)
{
while (text_end ? (text < text_end) : *text)
{
unsigned int c = 0;
int c_len = ImTextCharFromUtf8(&c, text, text_end);
text += c_len;
if (c_len == 0)
break;
if (c < 0x10000)
AddChar((ImWchar)c);
}
}
void ImFontAtlas::GlyphRangesBuilder::AddRanges(const ImWchar* ranges)
{
for (; ranges[0]; ranges += 2)
for (ImWchar c = ranges[0]; c <= ranges[1]; c++)
AddChar(c);
}
void ImFontAtlas::GlyphRangesBuilder::BuildRanges(ImVector<ImWchar>* out_ranges)
{
for (int n = 0; n < 0x10000; n++)
if (GetBit(n))
{
out_ranges->push_back((ImWchar)n);
while (n < 0x10000 && GetBit(n + 1))
n++;
out_ranges->push_back((ImWchar)n);
}
out_ranges->push_back(0);
}
//-----------------------------------------------------------------------------
// ImFont
//-----------------------------------------------------------------------------