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Merge branch 'master' into docking

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# Conflicts:
#	imgui.cpp
#	imgui_draw.cpp
This commit is contained in:
omar 2020-03-19 12:44:53 +01:00
commit 16a9488c13
12 changed files with 392 additions and 267 deletions
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46
.github/workflows/build.yml vendored
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@ -43,7 +43,7 @@ jobs:
# Not using matrix here because it would inflate job count too much. Check out and setup is done for every job and that makes build times way too long.
- name: Build example_null (extra warnings, mingw 64-bit)
run: mingw32-make -C examples/example_null EXTRA_WARNINGS=1
run: mingw32-make -C examples/example_null WITH_EXTRA_WARNINGS=1
- name: Build example_null (extra warnings, msvc 64-bit)
shell: cmd
@ -166,27 +166,32 @@ jobs:
- name: Install Dependencies
run: |
sudo apt-get update
sudo apt-get install -y libglfw3-dev libsdl2-dev gcc-multilib g++-multilib
sudo apt-get install -y libglfw3-dev libsdl2-dev gcc-multilib g++-multilib libfreetype6-dev
- name: Build example_null (extra warnings, gcc 32-bit)
run: |
make -C examples/example_null clean
CXXFLAGS="$CXXFLAGS -m32 -Werror" make -C examples/example_null EXTRA_WARNINGS=1
CXXFLAGS="$CXXFLAGS -m32 -Werror" make -C examples/example_null WITH_EXTRA_WARNINGS=1
- name: Build example_null (extra warnings, gcc 64-bit)
run: |
make -C examples/example_null clean
CXXFLAGS="$CXXFLAGS -m64 -Werror" make -C examples/example_null EXTRA_WARNINGS=1
CXXFLAGS="$CXXFLAGS -m64 -Werror" make -C examples/example_null WITH_EXTRA_WARNINGS=1
- name: Build example_null (extra warnings, clang 32-bit)
run: |
make -C examples/example_null clean
CXXFLAGS="$CXXFLAGS -m32 -Werror" CXX=clang++ make -C examples/example_null EXTRA_WARNINGS=1
CXXFLAGS="$CXXFLAGS -m32 -Werror" CXX=clang++ make -C examples/example_null WITH_EXTRA_WARNINGS=1
- name: Build example_null (extra warnings, clang 64-bit)
run: |
make -C examples/example_null clean
CXXFLAGS="$CXXFLAGS -m64 -Werror" CXX=clang++ make -C examples/example_null EXTRA_WARNINGS=1
CXXFLAGS="$CXXFLAGS -m64 -Werror" CXX=clang++ make -C examples/example_null WITH_EXTRA_WARNINGS=1
- name: Build example_null (freetype)
run: |
make -C examples/example_null clean
make -C examples/example_null WITH_FREETYPE=1
- name: Build example_null (single file build)
run: |
@ -203,6 +208,31 @@ jobs:
echo '#include "examples/example_null/main.cpp"' >> example_single_file.cpp
g++ -I. -Wall -Wformat -o example_single_file example_single_file.cpp
- name: Build example_null (with large ImDrawIdx)
run: |
echo '#define ImDrawIdx unsigned int' > example_single_file.cpp
echo '#define IMGUI_IMPLEMENTATION' >> example_single_file.cpp
echo '#include "misc/single_file/imgui_single_file.h"' >> example_single_file.cpp
echo '#include "examples/example_null/main.cpp"' >> example_single_file.cpp
g++ -I. -Wall -Wformat -o example_single_file example_single_file.cpp
- name: Build example_null (with IMGUI_DISABLE_OBSOLETE_FUNCTIONS)
run: |
echo '#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS' > example_single_file.cpp
echo '#define IMGUI_IMPLEMENTATION' >> example_single_file.cpp
echo '#include "misc/single_file/imgui_single_file.h"' >> example_single_file.cpp
echo '#include "examples/example_null/main.cpp"' >> example_single_file.cpp
g++ -I. -Wall -Wformat -o example_single_file example_single_file.cpp
- name: Build example_null (with IMGUI_DISABLE_DEMO_WINDOWS and IMGUI_DISABLE_METRICS_WINDOW)
run: |
echo '#define IMGUI_DISABLE_DEMO_WINDOWS' > example_single_file.cpp
echo '#define IMGUI_DISABLE_METRICS_WINDOW' >> example_single_file.cpp
echo '#define IMGUI_IMPLEMENTATION' >> example_single_file.cpp
echo '#include "misc/single_file/imgui_single_file.h"' >> example_single_file.cpp
echo '#include "examples/example_null/main.cpp"' >> example_single_file.cpp
g++ -I. -Wall -Wformat -o example_single_file example_single_file.cpp
- name: Build example_glfw_opengl2
run: make -C examples/example_glfw_opengl2
@ -230,7 +260,7 @@ jobs:
brew install sdl2
- name: Build example_null (extra warnings, clang 64-bit)
run: make -C examples/example_null EXTRA_WARNINGS=1
run: make -C examples/example_null WITH_EXTRA_WARNINGS=1
- name: Build example_null (single file build)
run: |
@ -328,6 +358,6 @@ jobs:
exit 0
fi
cd examples/example_null
pvs-studio-analyzer trace -- make EXTRA_WARNINGS=1
pvs-studio-analyzer trace -- make WITH_EXTRA_WARNINGS=1
pvs-studio-analyzer analyze -e ../../imstb_rectpack.h -e ../../imstb_textedit.h -e ../../imstb_truetype.h -l ../../pvs-studio.lic -o pvs-studio.log
plog-converter -a 'GA:1,2;OP:1' -t errorfile -w pvs-studio.log

7
docs/CHANGELOG.txt
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@ -126,7 +126,14 @@ Other Changes:
- Window: Fixed a bug with child window inheriting ItemFlags from their parent when the child
window also manipulate the ItemFlags stack. (#3024) [@Stanbroek]
- Font: Fixed non-ASCII space occasionally creating unnecessary empty polygons.
- Misc: Added additional checks in EndFrame() to verify that io.KeyXXX values have not been
tampered with between NewFrame() and EndFrame().
- Misc, Freetype: Fixed support for IMGUI_STB_RECT_PACK_FILENAME compile time directive
in imgui_freetype.cpp (matching support in the regular code path). (#3062) [@DonKult]
- Demo: Added black and white and color gradients to Demo>Examples>Custom Rendering.
- CI: Added more tests on the continuous-integration server: extra warnings for Clang/GCC, building
SDL+Metal example, building imgui_freetype.cpp, more compile-time imconfig.h settings: disabling
obsolete functions, enabling 32-bit ImDrawIdx, enabling 32-bit ImWchar, disabling demo. [@rokups]
- Backends: Win32: Added ImGui_ImplWin32_EnableDpiAwareness(), ImGui_ImplWin32_GetDpiScaleForHwnd(),
ImGui_ImplWin32_GetDpiScaleForMonitor() helpers functions (backported from the docking branch).
Those functions makes it easier for example apps to support hi-dpi features without setting up

4
docs/TODO.txt
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@ -14,8 +14,6 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
- window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- window: allow resizing of child windows (possibly given min/max for each axis?.)
- window: background options for child windows, border option (disable rounding).
- window: begin with *p_open == false could return false.
- window: get size/pos helpers given names (see discussion in #249)
- window: a collapsed window can be stuck behind the main menu bar?
@ -31,6 +29,8 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
- window: the size_on_first_use path of Begin() can probably be removed
- window/size: manually triggered auto-fit (double-click on grip) shouldn't resize window down to viewport size?
- window/opt: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. -> this may require enforcing that it is illegal to submit contents if Begin returns false.
- window/child: background options for child windows, border option (disable rounding).
- window/child: allow resizing of child windows (possibly given min/max for each axis?.)
- window/child: the first draw command of a child window could be moved into the current draw command of the parent window (unless child+tooltip?).
- window/child: border could be emitted in parent as well.
- window/child: allow SetNextWindowContentSize() to work on child windows.

5
examples/README.txt
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@ -160,7 +160,7 @@ Those will allow you to create portable applications and will solve and abstract
---------------------------------------
Building:
Unfortunately in 2018 it is still tedious to create and maintain portable build files using external
Unfortunately in 2020 it is still tedious to create and maintain portable build files using external
libraries (the kind we're using here to create a window and render 3D triangles) without relying on
third party software. For most examples here I choose to provide:
- Makefiles for Linux/OSX
@ -171,6 +171,9 @@ Building:
You can probably just import the imgui_impl_xxx.cpp/.h files into your own codebase or compile those
directly with a command-line compiler.
If you are interested in using Cmake to build and links examples, see:
https://github.com/ocornut/imgui/pull/1713 and https://github.com/ocornut/imgui/pull/3027
example_allegro5/
Allegro 5 example.

29
examples/example_null/Makefile
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@ -2,9 +2,15 @@
# Cross Platform Makefile
# Compatible with MSYS2/MINGW, Ubuntu 14.04.1 and Mac OS X
#
# Important: This is a "null back-end" application, with no visible output or interaction!
# This is used for testing purpose and continuous integration, and has little use for end-user.
#
# Options
WITH_EXTRA_WARNINGS ?= 0
WITH_FREETYPE ?= 0
EXE = example_null
EXTRA_WARNINGS ?= 0
SOURCES = main.cpp
SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
@ -14,18 +20,26 @@ CXXFLAGS += -I../ -I../../
CXXFLAGS += -g -Wall -Wformat
LIBS =
# We use the EXTRA_WARNINGS flag on our CI setup to eagerly catch zealous warnings
ifeq ($(EXTRA_WARNINGS), 1)
# We use the WITH_EXTRA_WARNINGS flag on our CI setup to eagerly catch zealous warnings
ifeq ($(WITH_EXTRA_WARNINGS), 1)
CXXFLAGS += -Wno-zero-as-null-pointer-constant -Wno-double-promotion -Wno-variadic-macros
endif
# We use the WITH_FREETYPE flag on our CI setup to test compiling misc/freetype/imgui_freetype.cpp
# (only supported on Linux, and note that the imgui_freetype code currently won't be executed)
ifeq ($(WITH_FREETYPE), 1)
SOURCES += ../../misc/freetype/imgui_freetype.cpp
CXXFLAGS += $(shell pkg-config --cflags freetype2)
LIBS += $(shell pkg-config --libs freetype2)
endif
##---------------------------------------------------------------------
## BUILD FLAGS PER PLATFORM
##---------------------------------------------------------------------
ifeq ($(UNAME_S), Linux) #LINUX
ECHO_MESSAGE = "Linux"
ifneq ($(EXTRA_WARNINGS), 0)
ifneq ($(WITH_EXTRA_WARNINGS), 0)
CXXFLAGS += -Wextra -pedantic
endif
CFLAGS = $(CXXFLAGS)
@ -33,7 +47,7 @@ endif
ifeq ($(UNAME_S), Darwin) #APPLE
ECHO_MESSAGE = "Mac OS X"
ifneq ($(EXTRA_WARNINGS), 0)
ifneq ($(WITH_EXTRA_WARNINGS), 0)
CXXFLAGS += -Weverything -Wno-reserved-id-macro -Wno-c++98-compat-pedantic -Wno-padded -Wno-c++11-long-long
endif
CFLAGS = $(CXXFLAGS)
@ -41,7 +55,7 @@ endif
ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
ECHO_MESSAGE = "MinGW"
ifneq ($(EXTRA_WARNINGS), 0)
ifneq ($(WITH_EXTRA_WARNINGS), 0)
CXXFLAGS += -Wextra -pedantic
endif
CFLAGS = $(CXXFLAGS)
@ -60,6 +74,9 @@ endif
%.o:../../%.cpp
$(CXX) $(CXXFLAGS) -c -o $@ $<
%.o:../../misc/freetype/%.cpp
$(CXX) $(CXXFLAGS) -c -o $@ $<
all: $(EXE)
@echo Build complete for $(ECHO_MESSAGE)

270
imgui.cpp
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@ -947,7 +947,8 @@ static ImGuiWindow* NavRestoreLastChildNavWindow(ImGuiWindow* window);
static int FindWindowFocusIndex(ImGuiWindow* window);
// Error Checking
static void ErrorCheckEndFrame();
static void ErrorCheckNewFrameSanityChecks();
static void ErrorCheckEndFrameSanityChecks();
static void ErrorCheckBeginEndCompareStacksSize(ImGuiWindow* window, bool write);
// Misc
@ -1828,10 +1829,19 @@ int ImTextCountUtf8BytesFromStr(const ImWchar* in_text, const ImWchar* in_text_e
}
//-----------------------------------------------------------------------------
// [SECTION] MISC HELPERS/UTILTIES (Color functions)
// [SECTION] MISC HELPERS/UTILITIES (Color functions)
// Note: The Convert functions are early design which are not consistent with other API.
//-----------------------------------------------------------------------------
IMGUI_API ImU32 ImAlphaBlendColors(ImU32 col_a, ImU32 col_b)
{
float t = ((col_b >> IM_COL32_A_SHIFT) & 0xFF) / 255.f;
int r = ImLerp((int)(col_a >> IM_COL32_R_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_R_SHIFT) & 0xFF, t);
int g = ImLerp((int)(col_a >> IM_COL32_G_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_G_SHIFT) & 0xFF, t);
int b = ImLerp((int)(col_a >> IM_COL32_B_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_B_SHIFT) & 0xFF, t);
return IM_COL32(r, g, b, 0xFF);
}
ImVec4 ImGui::ColorConvertU32ToFloat4(ImU32 in)
{
float s = 1.0f/255.0f;
@ -2582,8 +2592,9 @@ const char* ImGui::GetStyleColorName(ImGuiCol idx)
//-----------------------------------------------------------------------------
// [SECTION] RENDER HELPERS
// Some of those (internal) functions are currently quite a legacy mess - their signature and behavior will change.
// Also see imgui_draw.cpp for some more which have been reworked to not rely on ImGui:: state.
// Some of those (internal) functions are currently quite a legacy mess - their signature and behavior will change,
// we need a nicer separation between low-level functions and high-level functions relying on the ImGui context.
// Also see imgui_draw.cpp for some more which have been reworked to not rely on ImGui:: context.
//-----------------------------------------------------------------------------
const char* ImGui::FindRenderedTextEnd(const char* text, const char* text_end)
@ -2793,61 +2804,6 @@ void ImGui::RenderFrameBorder(ImVec2 p_min, ImVec2 p_max, float rounding)
}
}
// Render an arrow aimed to be aligned with text (p_min is a position in the same space text would be positioned). To e.g. denote expanded/collapsed state
void ImGui::RenderArrow(ImDrawList* draw_list, ImVec2 pos, ImU32 col, ImGuiDir dir, float scale)
{
const float h = draw_list->_Data->FontSize * 1.00f;
float r = h * 0.40f * scale;
ImVec2 center = pos + ImVec2(h * 0.50f, h * 0.50f * scale);
ImVec2 a, b, c;
switch (dir)
{
case ImGuiDir_Up:
case ImGuiDir_Down:
if (dir == ImGuiDir_Up) r = -r;
a = ImVec2(+0.000f,+0.750f) * r;
b = ImVec2(-0.866f,-0.750f) * r;
c = ImVec2(+0.866f,-0.750f) * r;
break;
case ImGuiDir_Left:
case ImGuiDir_Right:
if (dir == ImGuiDir_Left) r = -r;
a = ImVec2(+0.750f,+0.000f) * r;
b = ImVec2(-0.750f,+0.866f) * r;
c = ImVec2(-0.750f,-0.866f) * r;
break;
case ImGuiDir_None:
case ImGuiDir_COUNT:
IM_ASSERT(0);
break;
}
draw_list->AddTriangleFilled(center + a, center + b, center + c, col);
}
void ImGui::RenderBullet(ImDrawList* draw_list, ImVec2 pos, ImU32 col)
{
draw_list->AddCircleFilled(pos, draw_list->_Data->FontSize * 0.20f, col, 8);
}
void ImGui::RenderCheckMark(ImVec2 pos, ImU32 col, float sz)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
float thickness = ImMax(sz / 5.0f, 1.0f);
sz -= thickness*0.5f;
pos += ImVec2(thickness*0.25f, thickness*0.25f);
float third = sz / 3.0f;
float bx = pos.x + third;
float by = pos.y + sz - third*0.5f;
window->DrawList->PathLineTo(ImVec2(bx - third, by - third));
window->DrawList->PathLineTo(ImVec2(bx, by));
window->DrawList->PathLineTo(ImVec2(bx + third*2, by - third*2));
window->DrawList->PathStroke(col, false, thickness);
}
void ImGui::RenderNavHighlight(const ImRect& bb, ImGuiID id, ImGuiNavHighlightFlags flags)
{
ImGuiContext& g = *GImGui;
@ -3896,76 +3852,15 @@ void ImGui::UpdateHoveredWindowAndCaptureFlags()
g.IO.WantTextInput = (g.WantTextInputNextFrame != -1) ? (g.WantTextInputNextFrame != 0) : false;
}
static void NewFrameSanityChecks()
static ImGuiKeyModFlags GetMergedKeyModFlags()
{
ImGuiContext& g = *GImGui;
// Check user data
// (We pass an error message in the assert expression to make it visible to programmers who are not using a debugger, as most assert handlers display their argument)
IM_ASSERT(g.Initialized);
IM_ASSERT((g.IO.DeltaTime > 0.0f || g.FrameCount == 0) && "Need a positive DeltaTime!");
IM_ASSERT((g.FrameCount == 0 || g.FrameCountEnded == g.FrameCount) && "Forgot to call Render() or EndFrame() at the end of the previous frame?");
IM_ASSERT(g.IO.DisplaySize.x >= 0.0f && g.IO.DisplaySize.y >= 0.0f && "Invalid DisplaySize value!");
IM_ASSERT(g.IO.Fonts->Fonts.Size > 0 && "Font Atlas not built. Did you call io.Fonts->GetTexDataAsRGBA32() / GetTexDataAsAlpha8() ?");
IM_ASSERT(g.IO.Fonts->Fonts[0]->IsLoaded() && "Font Atlas not built. Did you call io.Fonts->GetTexDataAsRGBA32() / GetTexDataAsAlpha8() ?");
IM_ASSERT(g.Style.CurveTessellationTol > 0.0f && "Invalid style setting!");
IM_ASSERT(g.Style.CircleSegmentMaxError > 0.0f && "Invalid style setting!");
IM_ASSERT(g.Style.Alpha >= 0.0f && g.Style.Alpha <= 1.0f && "Invalid style setting. Alpha cannot be negative (allows us to avoid a few clamps in color computations)!");
IM_ASSERT(g.Style.WindowMinSize.x >= 1.0f && g.Style.WindowMinSize.y >= 1.0f && "Invalid style setting.");
IM_ASSERT(g.Style.WindowMenuButtonPosition == ImGuiDir_None || g.Style.WindowMenuButtonPosition == ImGuiDir_Left || g.Style.WindowMenuButtonPosition == ImGuiDir_Right);
for (int n = 0; n < ImGuiKey_COUNT; n++)
IM_ASSERT(g.IO.KeyMap[n] >= -1 && g.IO.KeyMap[n] < IM_ARRAYSIZE(g.IO.KeysDown) && "io.KeyMap[] contains an out of bound value (need to be 0..512, or -1 for unmapped key)");
// Perform simple check: required key mapping (we intentionally do NOT check all keys to not pressure user into setting up everything, but Space is required and was only recently added in 1.60 WIP)
if (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard)
IM_ASSERT(g.IO.KeyMap[ImGuiKey_Space] != -1 && "ImGuiKey_Space is not mapped, required for keyboard navigation.");
// Perform simple check: the beta io.ConfigWindowsResizeFromEdges option requires back-end to honor mouse cursor changes and set the ImGuiBackendFlags_HasMouseCursors flag accordingly.
if (g.IO.ConfigWindowsResizeFromEdges && !(g.IO.BackendFlags & ImGuiBackendFlags_HasMouseCursors))
g.IO.ConfigWindowsResizeFromEdges = false;
// Perform simple check: error if Docking or Viewport are enabled _exactly_ on frame 1 (instead of frame 0 or later), which is a common error leading to loss of .ini data.
if (g.FrameCount == 1 && (g.IO.ConfigFlags & ImGuiConfigFlags_DockingEnable) && (g.ConfigFlagsLastFrame & ImGuiConfigFlags_DockingEnable) == 0)
IM_ASSERT(0 && "Please set DockingEnable before the first call to NewFrame()! Otherwise you will lose your .ini settings!");
if (g.FrameCount == 1 && (g.IO.ConfigFlags & ImGuiConfigFlags_ViewportsEnable) && (g.ConfigFlagsLastFrame & ImGuiConfigFlags_ViewportsEnable) == 0)
IM_ASSERT(0 && "Please set ViewportsEnable before the first call to NewFrame()! Otherwise you will lose your .ini settings!");
// Perform simple checks: multi-viewport and platform windows support
if (g.IO.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
{
if ((g.IO.BackendFlags & ImGuiBackendFlags_PlatformHasViewports) && (g.IO.BackendFlags & ImGuiBackendFlags_RendererHasViewports))
{
IM_ASSERT((g.FrameCount == 0 || g.FrameCount == g.FrameCountPlatformEnded) && "Forgot to call UpdatePlatformWindows() in main loop after EndFrame()? Check examples/ applications for reference.");
IM_ASSERT(g.PlatformIO.Platform_CreateWindow != NULL && "Platform init didn't install handlers?");
IM_ASSERT(g.PlatformIO.Platform_DestroyWindow != NULL && "Platform init didn't install handlers?");
IM_ASSERT(g.PlatformIO.Platform_GetWindowPos != NULL && "Platform init didn't install handlers?");
IM_ASSERT(g.PlatformIO.Platform_SetWindowPos != NULL && "Platform init didn't install handlers?");
IM_ASSERT(g.PlatformIO.Platform_GetWindowSize != NULL && "Platform init didn't install handlers?");
IM_ASSERT(g.PlatformIO.Platform_SetWindowSize != NULL && "Platform init didn't install handlers?");
IM_ASSERT(g.PlatformIO.Monitors.Size > 0 && "Platform init didn't setup Monitors list?");
IM_ASSERT((g.Viewports[0]->PlatformUserData != NULL || g.Viewports[0]->PlatformHandle != NULL) && "Platform init didn't setup main viewport.");
if (g.IO.ConfigDockingTransparentPayload && (g.IO.ConfigFlags & ImGuiConfigFlags_DockingEnable))
IM_ASSERT(g.PlatformIO.Platform_SetWindowAlpha != NULL && "Platform_SetWindowAlpha handler is required to use io.ConfigDockingTransparent!");
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
IM_ASSERT(g.IO.RenderDrawListsFn == NULL); // Call ImGui::Render() then pass ImGui::GetDrawData() yourself to your render function!
#endif
}
else
{
// Disable feature, our back-ends do not support it
g.IO.ConfigFlags &= ~ImGuiConfigFlags_ViewportsEnable;
}
// Perform simple checks on platform monitor data + compute a total bounding box for quick early outs
for (int monitor_n = 0; monitor_n < g.PlatformIO.Monitors.Size; monitor_n++)
{
ImGuiPlatformMonitor& mon = g.PlatformIO.Monitors[monitor_n];
IM_UNUSED(mon);
IM_ASSERT(mon.MainSize.x > 0.0f && mon.MainSize.y > 0.0f && "Monitor bounds not setup properly.");
IM_ASSERT(mon.WorkSize.x > 0.0f && mon.WorkSize.y > 0.0f && "Monitor bounds not setup properly. If you don't have work area information, just copy Min/Max into them.");
IM_ASSERT(mon.DpiScale != 0.0f);
}
}
ImGuiKeyModFlags key_mod_flags = ImGuiKeyModFlags_None;
if (g.IO.KeyCtrl) { key_mod_flags |= ImGuiKeyModFlags_Ctrl; }
if (g.IO.KeyShift) { key_mod_flags |= ImGuiKeyModFlags_Shift; }
if (g.IO.KeyAlt) { key_mod_flags |= ImGuiKeyModFlags_Alt; }
if (g.IO.KeySuper) { key_mod_flags |= ImGuiKeyModFlags_Super; }
return key_mod_flags;
}
void ImGui::NewFrame()
@ -3979,7 +3874,7 @@ void ImGui::NewFrame()
// Check and assert for various common IO and Configuration mistakes
g.ConfigFlagsLastFrame = g.ConfigFlagsCurrFrame;
NewFrameSanityChecks();
ErrorCheckNewFrameSanityChecks();
g.ConfigFlagsCurrFrame = g.IO.ConfigFlags;
// Load settings on first frame, save settings when modified (after a delay)
@ -4070,9 +3965,12 @@ void ImGui::NewFrame()
g.DragDropAcceptIdPrev = g.DragDropAcceptIdCurr;
g.DragDropAcceptIdCurr = 0;
g.DragDropAcceptIdCurrRectSurface = FLT_MAX;
g.DragDropWithinSourceOrTarget = false;
g.DragDropWithinSource = false;
g.DragDropWithinTarget = false;
// Update keyboard input state
// Synchronize io.KeyMods with individual modifiers io.KeyXXX bools
g.IO.KeyMods = GetMergedKeyModFlags();
memcpy(g.IO.KeysDownDurationPrev, g.IO.KeysDownDuration, sizeof(g.IO.KeysDownDuration));
for (int i = 0; i < IM_ARRAYSIZE(g.IO.KeysDown); i++)
g.IO.KeysDownDuration[i] = g.IO.KeysDown[i] ? (g.IO.KeysDownDuration[i] < 0.0f ? 0.0f : g.IO.KeysDownDuration[i] + g.IO.DeltaTime) : -1.0f;
@ -4517,10 +4415,14 @@ void ImGui::EndFrame()
{
ImGuiContext& g = *GImGui;
IM_ASSERT(g.Initialized);
if (g.FrameCountEnded == g.FrameCount) // Don't process EndFrame() multiple times.
// Don't process EndFrame() multiple times.
if (g.FrameCountEnded == g.FrameCount)
return;
IM_ASSERT(g.WithinFrameScope && "Forgot to call ImGui::NewFrame()?");
ErrorCheckEndFrameSanityChecks();
// Notify OS when our Input Method Editor cursor has moved (e.g. CJK inputs using Microsoft IME)
if (g.PlatformIO.Platform_SetImeInputPos && (g.PlatformImeLastPos.x == FLT_MAX || ImLengthSqr(g.PlatformImePos - g.PlatformImeLastPos) > 0.0001f))
if (g.PlatformImePosViewport && g.PlatformImePosViewport->PlatformWindowCreated)
@ -4530,8 +4432,6 @@ void ImGui::EndFrame()
g.PlatformImePosViewport = NULL;
}
ErrorCheckEndFrame();
// Hide implicit/fallback "Debug" window if it hasn't been used
g.WithinFrameScopeWithImplicitWindow = false;
if (g.CurrentWindow && !g.CurrentWindow->WriteAccessed)
@ -4559,9 +4459,9 @@ void ImGui::EndFrame()
// Drag and Drop: Fallback for source tooltip. This is not ideal but better than nothing.
if (g.DragDropActive && g.DragDropSourceFrameCount < g.FrameCount)
{
g.DragDropWithinSourceOrTarget = true;
g.DragDropWithinSource = true;
SetTooltip("...");
g.DragDropWithinSourceOrTarget = false;
g.DragDropWithinSource = false;
}
// End frame
@ -7501,11 +7401,89 @@ bool ImGui::DebugCheckVersionAndDataLayout(const char* version, size_t sz_io, si
return !error;
}
static void ImGui::ErrorCheckEndFrame()
static void ImGui::ErrorCheckNewFrameSanityChecks()
{
ImGuiContext& g = *GImGui;
// Check user data
// (We pass an error message in the assert expression to make it visible to programmers who are not using a debugger, as most assert handlers display their argument)
IM_ASSERT(g.Initialized);
IM_ASSERT((g.IO.DeltaTime > 0.0f || g.FrameCount == 0) && "Need a positive DeltaTime!");
IM_ASSERT((g.FrameCount == 0 || g.FrameCountEnded == g.FrameCount) && "Forgot to call Render() or EndFrame() at the end of the previous frame?");
IM_ASSERT(g.IO.DisplaySize.x >= 0.0f && g.IO.DisplaySize.y >= 0.0f && "Invalid DisplaySize value!");
IM_ASSERT(g.IO.Fonts->Fonts.Size > 0 && "Font Atlas not built. Did you call io.Fonts->GetTexDataAsRGBA32() / GetTexDataAsAlpha8() ?");
IM_ASSERT(g.IO.Fonts->Fonts[0]->IsLoaded() && "Font Atlas not built. Did you call io.Fonts->GetTexDataAsRGBA32() / GetTexDataAsAlpha8() ?");
IM_ASSERT(g.Style.CurveTessellationTol > 0.0f && "Invalid style setting!");
IM_ASSERT(g.Style.CircleSegmentMaxError > 0.0f && "Invalid style setting!");
IM_ASSERT(g.Style.Alpha >= 0.0f && g.Style.Alpha <= 1.0f && "Invalid style setting. Alpha cannot be negative (allows us to avoid a few clamps in color computations)!");
IM_ASSERT(g.Style.WindowMinSize.x >= 1.0f && g.Style.WindowMinSize.y >= 1.0f && "Invalid style setting.");
IM_ASSERT(g.Style.WindowMenuButtonPosition == ImGuiDir_None || g.Style.WindowMenuButtonPosition == ImGuiDir_Left || g.Style.WindowMenuButtonPosition == ImGuiDir_Right);
for (int n = 0; n < ImGuiKey_COUNT; n++)
IM_ASSERT(g.IO.KeyMap[n] >= -1 && g.IO.KeyMap[n] < IM_ARRAYSIZE(g.IO.KeysDown) && "io.KeyMap[] contains an out of bound value (need to be 0..512, or -1 for unmapped key)");
// Perform simple check: required key mapping (we intentionally do NOT check all keys to not pressure user into setting up everything, but Space is required and was only recently added in 1.60 WIP)
if (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard)
IM_ASSERT(g.IO.KeyMap[ImGuiKey_Space] != -1 && "ImGuiKey_Space is not mapped, required for keyboard navigation.");
// Perform simple check: the beta io.ConfigWindowsResizeFromEdges option requires back-end to honor mouse cursor changes and set the ImGuiBackendFlags_HasMouseCursors flag accordingly.
if (g.IO.ConfigWindowsResizeFromEdges && !(g.IO.BackendFlags & ImGuiBackendFlags_HasMouseCursors))
g.IO.ConfigWindowsResizeFromEdges = false;
// Perform simple check: error if Docking or Viewport are enabled _exactly_ on frame 1 (instead of frame 0 or later), which is a common error leading to loss of .ini data.
if (g.FrameCount == 1 && (g.IO.ConfigFlags & ImGuiConfigFlags_DockingEnable) && (g.ConfigFlagsLastFrame & ImGuiConfigFlags_DockingEnable) == 0)
IM_ASSERT(0 && "Please set DockingEnable before the first call to NewFrame()! Otherwise you will lose your .ini settings!");
if (g.FrameCount == 1 && (g.IO.ConfigFlags & ImGuiConfigFlags_ViewportsEnable) && (g.ConfigFlagsLastFrame & ImGuiConfigFlags_ViewportsEnable) == 0)
IM_ASSERT(0 && "Please set ViewportsEnable before the first call to NewFrame()! Otherwise you will lose your .ini settings!");
// Perform simple checks: multi-viewport and platform windows support
if (g.IO.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
{
if ((g.IO.BackendFlags & ImGuiBackendFlags_PlatformHasViewports) && (g.IO.BackendFlags & ImGuiBackendFlags_RendererHasViewports))
{
IM_ASSERT((g.FrameCount == 0 || g.FrameCount == g.FrameCountPlatformEnded) && "Forgot to call UpdatePlatformWindows() in main loop after EndFrame()? Check examples/ applications for reference.");
IM_ASSERT(g.PlatformIO.Platform_CreateWindow != NULL && "Platform init didn't install handlers?");
IM_ASSERT(g.PlatformIO.Platform_DestroyWindow != NULL && "Platform init didn't install handlers?");
IM_ASSERT(g.PlatformIO.Platform_GetWindowPos != NULL && "Platform init didn't install handlers?");
IM_ASSERT(g.PlatformIO.Platform_SetWindowPos != NULL && "Platform init didn't install handlers?");
IM_ASSERT(g.PlatformIO.Platform_GetWindowSize != NULL && "Platform init didn't install handlers?");
IM_ASSERT(g.PlatformIO.Platform_SetWindowSize != NULL && "Platform init didn't install handlers?");
IM_ASSERT(g.PlatformIO.Monitors.Size > 0 && "Platform init didn't setup Monitors list?");
IM_ASSERT((g.Viewports[0]->PlatformUserData != NULL || g.Viewports[0]->PlatformHandle != NULL) && "Platform init didn't setup main viewport.");
if (g.IO.ConfigDockingTransparentPayload && (g.IO.ConfigFlags & ImGuiConfigFlags_DockingEnable))
IM_ASSERT(g.PlatformIO.Platform_SetWindowAlpha != NULL && "Platform_SetWindowAlpha handler is required to use io.ConfigDockingTransparent!");
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
IM_ASSERT(g.IO.RenderDrawListsFn == NULL); // Call ImGui::Render() then pass ImGui::GetDrawData() yourself to your render function!
#endif
}
else
{
// Disable feature, our back-ends do not support it
g.IO.ConfigFlags &= ~ImGuiConfigFlags_ViewportsEnable;
}
// Perform simple checks on platform monitor data + compute a total bounding box for quick early outs
for (int monitor_n = 0; monitor_n < g.PlatformIO.Monitors.Size; monitor_n++)
{
ImGuiPlatformMonitor& mon = g.PlatformIO.Monitors[monitor_n];
IM_UNUSED(mon);
IM_ASSERT(mon.MainSize.x > 0.0f && mon.MainSize.y > 0.0f && "Monitor bounds not setup properly.");
IM_ASSERT(mon.WorkSize.x > 0.0f && mon.WorkSize.y > 0.0f && "Monitor bounds not setup properly. If you don't have work area information, just copy Min/Max into them.");
IM_ASSERT(mon.DpiScale != 0.0f);
}
}
}
static void ImGui::ErrorCheckEndFrameSanityChecks()
{
ImGuiContext& g = *GImGui;
// Verify that io.KeyXXX fields haven't been tampered with. Key mods shoudl not be modified between NewFrame() and EndFrame()
const ImGuiKeyModFlags expected_key_mod_flags = GetMergedKeyModFlags();
IM_ASSERT(g.IO.KeyMods == expected_key_mod_flags && "Mismatching io.KeyCtrl/io.KeyShift/io.KeyAlt/io.KeySuper vs io.KeyMods");
IM_UNUSED(expected_key_mod_flags);
// Report when there is a mismatch of Begin/BeginChild vs End/EndChild calls. Important: Remember that the Begin/BeginChild API requires you
// to always call End/EndChild even if Begin/BeginChild returns false! (this is unfortunately inconsistent with most other Begin* API).
ImGuiContext& g = *GImGui;
if (g.CurrentWindowStack.Size != 1)
{
if (g.CurrentWindowStack.Size > 1)
@ -8198,7 +8176,7 @@ void ImGui::BeginTooltipEx(ImGuiWindowFlags extra_flags, ImGuiTooltipFlags toolt
{
ImGuiContext& g = *GImGui;
if (g.DragDropWithinSourceOrTarget)
if (g.DragDropWithinSource || g.DragDropWithinTarget)
{
// The default tooltip position is a little offset to give space to see the context menu (it's also clamped within the current viewport/monitor)
// In the context of a dragging tooltip we try to reduce that offset and we enforce following the cursor.
@ -9895,7 +9873,7 @@ bool ImGui::BeginDragDropSource(ImGuiDragDropFlags flags)
g.DragDropMouseButton = mouse_button;
}
g.DragDropSourceFrameCount = g.FrameCount;
g.DragDropWithinSourceOrTarget = true;
g.DragDropWithinSource = true;
if (!(flags & ImGuiDragDropFlags_SourceNoPreviewTooltip))
{
@ -9922,7 +9900,7 @@ void ImGui::EndDragDropSource()
{
ImGuiContext& g = *GImGui;
IM_ASSERT(g.DragDropActive);
IM_ASSERT(g.DragDropWithinSourceOrTarget && "Not after a BeginDragDropSource()?");
IM_ASSERT(g.DragDropWithinSource && "Not after a BeginDragDropSource()?");
if (!(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoPreviewTooltip))
EndTooltip();
@ -9930,7 +9908,7 @@ void ImGui::EndDragDropSource()
// Discard the drag if have not called SetDragDropPayload()
if (g.DragDropPayload.DataFrameCount == -1)
ClearDragDrop();
g.DragDropWithinSourceOrTarget = false;
g.DragDropWithinSource = false;
}
// Use 'cond' to choose to submit payload on drag start or every frame
@ -9992,10 +9970,10 @@ bool ImGui::BeginDragDropTargetCustom(const ImRect& bb, ImGuiID id)
if (window->SkipItems)
return false;
IM_ASSERT(g.DragDropWithinSourceOrTarget == false);
IM_ASSERT(g.DragDropWithinTarget == false);
g.DragDropTargetRect = bb;
g.DragDropTargetId = id;
g.DragDropWithinSourceOrTarget = true;
g.DragDropWithinTarget = true;
return true;
}
@ -10022,10 +10000,10 @@ bool ImGui::BeginDragDropTarget()
if (g.DragDropPayload.SourceId == id)
return false;
IM_ASSERT(g.DragDropWithinSourceOrTarget == false);
IM_ASSERT(g.DragDropWithinTarget == false);
g.DragDropTargetRect = display_rect;
g.DragDropTargetId = id;
g.DragDropWithinSourceOrTarget = true;
g.DragDropWithinTarget = true;
return true;
}
@ -10089,8 +10067,8 @@ void ImGui::EndDragDropTarget()
{
ImGuiContext& g = *GImGui;
IM_ASSERT(g.DragDropActive);
IM_ASSERT(g.DragDropWithinSourceOrTarget);
g.DragDropWithinSourceOrTarget = false;
IM_ASSERT(g.DragDropWithinTarget);
g.DragDropWithinTarget = false;
}
//-----------------------------------------------------------------------------

12
imgui.h
View File

@ -176,6 +176,7 @@ typedef int ImGuiDragDropFlags; // -> enum ImGuiDragDropFlags_ // Flags: f
typedef int ImGuiFocusedFlags; // -> enum ImGuiFocusedFlags_ // Flags: for IsWindowFocused()
typedef int ImGuiHoveredFlags; // -> enum ImGuiHoveredFlags_ // Flags: for IsItemHovered(), IsWindowHovered() etc.
typedef int ImGuiInputTextFlags; // -> enum ImGuiInputTextFlags_ // Flags: for InputText(), InputTextMultiline()
typedef int ImGuiKeyModFlags; // -> enum ImGuiKeyModFlags_ // Flags: for io.KeyMods (Ctrl/Shift/Alt/Super)
typedef int ImGuiSelectableFlags; // -> enum ImGuiSelectableFlags_ // Flags: for Selectable()
typedef int ImGuiTabBarFlags; // -> enum ImGuiTabBarFlags_ // Flags: for BeginTabBar()
typedef int ImGuiTabItemFlags; // -> enum ImGuiTabItemFlags_ // Flags: for BeginTabItem()
@ -1056,6 +1057,16 @@ enum ImGuiKey_
ImGuiKey_COUNT
};
// To test io.KeyMods (which is a combination of individual fields io.KeyCtrl, io.KeyShift, io.KeyAlt set by user/back-end)
enum ImGuiKeyModFlags_
{
ImGuiKeyModFlags_None = 0,
ImGuiKeyModFlags_Ctrl = 1 << 0,
ImGuiKeyModFlags_Shift = 1 << 1,
ImGuiKeyModFlags_Alt = 1 << 2,
ImGuiKeyModFlags_Super = 1 << 3
};
// Gamepad/Keyboard directional navigation
// Keyboard: Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard to enable. NewFrame() will automatically fill io.NavInputs[] based on your io.KeysDown[] + io.KeyMap[] arrays.
// Gamepad: Set io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad to enable. Back-end: set ImGuiBackendFlags_HasGamepad and fill the io.NavInputs[] fields before calling NewFrame(). Note that io.NavInputs[] is cleared by EndFrame().
@ -1579,6 +1590,7 @@ struct ImGuiIO
// [Internal] Dear ImGui will maintain those fields. Forward compatibility not guaranteed!
//------------------------------------------------------------------
ImGuiKeyModFlags KeyMods; // Key mods flags (same as io.KeyCtrl/KeyShift/KeyAlt/KeySuper but merged into flags), updated by NewFrame()
ImVec2 MousePosPrev; // Previous mouse position (note that MouseDelta is not necessary == MousePos-MousePosPrev, in case either position is invalid)
ImVec2 MouseClickedPos[5]; // Position at time of clicking
double MouseClickedTime[5]; // Time of last click (used to figure out double-click)

133
imgui_draw.cpp
View File

@ -16,7 +16,7 @@ Index of this file:
// [SECTION] ImFontAtlas glyph ranges helpers
// [SECTION] ImFontGlyphRangesBuilder
// [SECTION] ImFont
// [SECTION] Internal Render Helpers
// [SECTION] ImGui Internal Render Helpers
// [SECTION] Decompression code
// [SECTION] Default font data (ProggyClean.ttf)
@ -1927,7 +1927,7 @@ struct ImFontBuildSrcData
int DstIndex; // Index into atlas->Fonts[] and dst_tmp_array[]
int GlyphsHighest; // Highest requested codepoint
int GlyphsCount; // Glyph count (excluding missing glyphs and glyphs already set by an earlier source font)
ImBoolVector GlyphsSet; // Glyph bit map (random access, 1-bit per codepoint. This will be a maximum of 8KB)
ImBitVector GlyphsSet; // Glyph bit map (random access, 1-bit per codepoint. This will be a maximum of 8KB)
ImVector<int> GlyphsList; // Glyph codepoints list (flattened version of GlyphsMap)
};
@ -1937,19 +1937,19 @@ struct ImFontBuildDstData
int SrcCount; // Number of source fonts targeting this destination font.
int GlyphsHighest;
int GlyphsCount;
ImBoolVector GlyphsSet; // This is used to resolve collision when multiple sources are merged into a same destination font.
ImBitVector GlyphsSet; // This is used to resolve collision when multiple sources are merged into a same destination font.
};
static void UnpackBoolVectorToFlatIndexList(const ImBoolVector* in, ImVector<int>* out)
static void UnpackBitVectorToFlatIndexList(const ImBitVector* in, ImVector<int>* out)
{
IM_ASSERT(sizeof(in->Storage.Data[0]) == sizeof(int));
const int* it_begin = in->Storage.begin();
const int* it_end = in->Storage.end();
for (const int* it = it_begin; it < it_end; it++)
if (int entries_32 = *it)
for (int bit_n = 0; bit_n < 32; bit_n++)
if (entries_32 & (1u << bit_n))
out->push_back((int)((it - it_begin) << 5) + bit_n);
const ImU32* it_begin = in->Storage.begin();
const ImU32* it_end = in->Storage.end();
for (const ImU32* it = it_begin; it < it_end; it++)
if (ImU32 entries_32 = *it)
for (ImU32 bit_n = 0; bit_n < 32; bit_n++)
if (entries_32 & ((ImU32)1 << bit_n))
out->push_back((int)(((it - it_begin) << 5) + bit_n));
}
bool ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas)
@ -2010,14 +2010,14 @@ bool ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas)
{
ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];
ImFontBuildDstData& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
src_tmp.GlyphsSet.Resize(src_tmp.GlyphsHighest + 1);
src_tmp.GlyphsSet.Create(src_tmp.GlyphsHighest + 1);
if (dst_tmp.GlyphsSet.Storage.empty())
dst_tmp.GlyphsSet.Resize(dst_tmp.GlyphsHighest + 1);
dst_tmp.GlyphsSet.Create(dst_tmp.GlyphsHighest + 1);
for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
for (unsigned int codepoint = src_range[0]; codepoint <= src_range[1]; codepoint++)
{
if (dst_tmp.GlyphsSet.GetBit(codepoint)) // Don't overwrite existing glyphs. We could make this an option for MergeMode (e.g. MergeOverwrite==true)
if (dst_tmp.GlyphsSet.TestBit(codepoint)) // Don't overwrite existing glyphs. We could make this an option for MergeMode (e.g. MergeOverwrite==true)
continue;
if (!stbtt_FindGlyphIndex(&src_tmp.FontInfo, codepoint)) // It is actually in the font?
continue;
@ -2025,8 +2025,8 @@ bool ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas)
// Add to avail set/counters
src_tmp.GlyphsCount++;
dst_tmp.GlyphsCount++;
src_tmp.GlyphsSet.SetBit(codepoint, true);
dst_tmp.GlyphsSet.SetBit(codepoint, true);
src_tmp.GlyphsSet.SetBit(codepoint);
dst_tmp.GlyphsSet.SetBit(codepoint);
total_glyphs_count++;
}
}
@ -2036,7 +2036,7 @@ bool ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas)
{
ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];
src_tmp.GlyphsList.reserve(src_tmp.GlyphsCount);
UnpackBoolVectorToFlatIndexList(&src_tmp.GlyphsSet, &src_tmp.GlyphsList);
UnpackBitVectorToFlatIndexList(&src_tmp.GlyphsSet, &src_tmp.GlyphsList);
src_tmp.GlyphsSet.Clear();
IM_ASSERT(src_tmp.GlyphsList.Size == src_tmp.GlyphsCount);
}
@ -3167,15 +3167,73 @@ void ImFont::RenderText(ImDrawList* draw_list, float size, ImVec2 pos, ImU32 col
}
//-----------------------------------------------------------------------------
// [SECTION] Internal Render Helpers
// (progressively moved from imgui.cpp to here when they are redesigned to stop accessing ImGui global state)
// [SECTION] ImGui Internal Render Helpers
//-----------------------------------------------------------------------------
// Vaguely redesigned to stop accessing ImGui global state:
// - RenderArrow()
// - RenderBullet()
// - RenderCheckMark()
// - RenderMouseCursor()
// - RenderArrowDockMenu()
// - RenderArrowPointingAt()
// - RenderRectFilledRangeH()
// - RenderRectFilledWithHole()
//-----------------------------------------------------------------------------
// Function in need of a redesign (legacy mess)
// - RenderColorRectWithAlphaCheckerboard()
//-----------------------------------------------------------------------------
// Render an arrow aimed to be aligned with text (p_min is a position in the same space text would be positioned). To e.g. denote expanded/collapsed state
void ImGui::RenderArrow(ImDrawList* draw_list, ImVec2 pos, ImU32 col, ImGuiDir dir, float scale)
{
const float h = draw_list->_Data->FontSize * 1.00f;
float r = h * 0.40f * scale;
ImVec2 center = pos + ImVec2(h * 0.50f, h * 0.50f * scale);
ImVec2 a, b, c;
switch (dir)
{
case ImGuiDir_Up:
case ImGuiDir_Down:
if (dir == ImGuiDir_Up) r = -r;
a = ImVec2(+0.000f, +0.750f) * r;
b = ImVec2(-0.866f, -0.750f) * r;
c = ImVec2(+0.866f, -0.750f) * r;
break;
case ImGuiDir_Left:
case ImGuiDir_Right:
if (dir == ImGuiDir_Left) r = -r;
a = ImVec2(+0.750f, +0.000f) * r;
b = ImVec2(-0.750f, +0.866f) * r;
c = ImVec2(-0.750f, -0.866f) * r;
break;
case ImGuiDir_None:
case ImGuiDir_COUNT:
IM_ASSERT(0);
break;
}
draw_list->AddTriangleFilled(center + a, center + b, center + c, col);
}
void ImGui::RenderBullet(ImDrawList* draw_list, ImVec2 pos, ImU32 col)
{
draw_list->AddCircleFilled(pos, draw_list->_Data->FontSize * 0.20f, col, 8);
}
void ImGui::RenderCheckMark(ImDrawList* draw_list, ImVec2 pos, ImU32 col, float sz)
{
float thickness = ImMax(sz / 5.0f, 1.0f);
sz -= thickness * 0.5f;
pos += ImVec2(thickness * 0.25f, thickness * 0.25f);
float third = sz / 3.0f;
float bx = pos.x + third;
float by = pos.y + sz - third * 0.5f;
draw_list->PathLineTo(ImVec2(bx - third, by - third));
draw_list->PathLineTo(ImVec2(bx, by));
draw_list->PathLineTo(ImVec2(bx + third * 2.0f, by - third * 2.0f));
draw_list->PathStroke(col, false, thickness);
}
void ImGui::RenderMouseCursor(ImDrawList* draw_list, ImVec2 pos, float scale, ImGuiMouseCursor mouse_cursor, ImU32 col_fill, ImU32 col_border, ImU32 col_shadow)
{
@ -3306,6 +3364,43 @@ void ImGui::RenderRectFilledWithHole(ImDrawList* draw_list, ImRect outer, ImRect
if (fill_R && fill_D) draw_list->AddRectFilled(ImVec2(inner.Max.x, inner.Max.y), ImVec2(outer.Max.x, outer.Max.y), col, rounding, ImDrawCornerFlags_BotRight);
}
// Helper for ColorPicker4()
// NB: This is rather brittle and will show artifact when rounding this enabled if rounded corners overlap multiple cells. Caller currently responsible for avoiding that.
// Spent a non reasonable amount of time trying to getting this right for ColorButton with rounding+anti-aliasing+ImGuiColorEditFlags_HalfAlphaPreview flag + various grid sizes and offsets, and eventually gave up... probably more reasonable to disable rounding alltogether.
// FIXME: uses ImGui::GetColorU32
void ImGui::RenderColorRectWithAlphaCheckerboard(ImDrawList* draw_list, ImVec2 p_min, ImVec2 p_max, ImU32 col, float grid_step, ImVec2 grid_off, float rounding, int rounding_corners_flags)
{
if (((col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT) < 0xFF)
{
ImU32 col_bg1 = ImGui::GetColorU32(ImAlphaBlendColors(IM_COL32(204, 204, 204, 255), col));
ImU32 col_bg2 = ImGui::GetColorU32(ImAlphaBlendColors(IM_COL32(128, 128, 128, 255), col));
draw_list->AddRectFilled(p_min, p_max, col_bg1, rounding, rounding_corners_flags);
int yi = 0;
for (float y = p_min.y + grid_off.y; y < p_max.y; y += grid_step, yi++)
{
float y1 = ImClamp(y, p_min.y, p_max.y), y2 = ImMin(y + grid_step, p_max.y);
if (y2 <= y1)
continue;
for (float x = p_min.x + grid_off.x + (yi & 1) * grid_step; x < p_max.x; x += grid_step * 2.0f)
{
float x1 = ImClamp(x, p_min.x, p_max.x), x2 = ImMin(x + grid_step, p_max.x);
if (x2 <= x1)
continue;
int rounding_corners_flags_cell = 0;
if (y1 <= p_min.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopRight; }
if (y2 >= p_max.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotRight; }
rounding_corners_flags_cell &= rounding_corners_flags;
draw_list->AddRectFilled(ImVec2(x1, y1), ImVec2(x2, y2), col_bg2, rounding_corners_flags_cell ? rounding : 0.0f, rounding_corners_flags_cell);
}
}
}
else
{
draw_list->AddRectFilled(p_min, p_max, col, rounding, rounding_corners_flags);
}
}
//-----------------------------------------------------------------------------
// [SECTION] Decompression code
//-----------------------------------------------------------------------------

57
imgui_internal.h
View File

@ -73,7 +73,7 @@ Index of this file:
// Forward declarations
//-----------------------------------------------------------------------------
struct ImBoolVector; // Store 1-bit per value
struct ImBitVector; // Store 1-bit per value
struct ImRect; // An axis-aligned rectangle (2 points)
struct ImDrawDataBuilder; // Helper to build a ImDrawData instance
struct ImDrawListSharedData; // Data shared between all ImDrawList instances
@ -216,7 +216,8 @@ extern IMGUI_API ImGuiContext* GImGui; // Current implicit context pointer
// - Helpers: ImVec2/ImVec4 operators
// - Helpers: Maths
// - Helpers: Geometry
// - Helper: ImBoolVector
// - Helpers: Bit arrays
// - Helper: ImBitVector
// - Helper: ImPool<>
// - Helper: ImChunkStream<>
//-----------------------------------------------------------------------------
@ -229,6 +230,9 @@ IMGUI_API ImU32 ImHashStr(const char* data, size_t data_size = 0, ImU32
static inline ImU32 ImHash(const void* data, int size, ImU32 seed = 0) { return size ? ImHashData(data, (size_t)size, seed) : ImHashStr((const char*)data, 0, seed); } // [moved to ImHashStr/ImHashData in 1.68]
#endif
// Helpers: Color Blending
IMGUI_API ImU32 ImAlphaBlendColors(ImU32 col_a, ImU32 col_b);
// Helpers: Bit manipulation
static inline bool ImIsPowerOfTwo(int v) { return v != 0 && (v & (v - 1)) == 0; }
static inline int ImUpperPowerOfTwo(int v) { v--; v |= v >> 1; v |= v >> 2; v |= v >> 4; v |= v >> 8; v |= v >> 16; v++; return v; }
@ -273,10 +277,12 @@ static inline ImVec2 operator+(const ImVec2& lhs, const ImVec2& 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+=(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 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 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 ImVec4 operator+(const ImVec4& lhs, const ImVec4& rhs) { return ImVec4(lhs.x+rhs.x, lhs.y+rhs.y, lhs.z+rhs.z, lhs.w+rhs.w); }
static inline ImVec4 operator-(const ImVec4& lhs, const ImVec4& rhs) { return ImVec4(lhs.x-rhs.x, lhs.y-rhs.y, lhs.z-rhs.z, lhs.w-rhs.w); }
static inline ImVec4 operator*(const ImVec4& lhs, const ImVec4& rhs) { return ImVec4(lhs.x*rhs.x, lhs.y*rhs.y, lhs.z*rhs.z, lhs.w*rhs.w); }
@ -360,16 +366,32 @@ IMGUI_API void ImTriangleBarycentricCoords(const ImVec2& a, const ImVec2&
inline float ImTriangleArea(const ImVec2& a, const ImVec2& b, const ImVec2& c) { return ImFabs((a.x * (b.y - c.y)) + (b.x * (c.y - a.y)) + (c.x * (a.y - b.y))) * 0.5f; }
IMGUI_API ImGuiDir ImGetDirQuadrantFromDelta(float dx, float dy);
// Helper: ImBoolVector
// Store 1-bit per value. Note that Resize() currently clears the whole vector.
struct IMGUI_API ImBoolVector
// Helpers: Bit arrays
inline bool ImBitArrayTestBit(const ImU32* arr, int n) { ImU32 mask = (ImU32)1 << (n & 31); return (arr[n >> 5] & mask) != 0; }
inline void ImBitArrayClearBit(ImU32* arr, int n) { ImU32 mask = (ImU32)1 << (n & 31); arr[n >> 5] &= ~mask; }
inline void ImBitArraySetBit(ImU32* arr, int n) { ImU32 mask = (ImU32)1 << (n & 31); arr[n >> 5] |= mask; }
inline void ImBitArraySetBitRange(ImU32* arr, int n, int n2)
{
ImVector<int> Storage;
ImBoolVector() { }
void Resize(int sz) { Storage.resize((sz + 31) >> 5); memset(Storage.Data, 0, (size_t)Storage.Size * sizeof(Storage.Data[0])); }
void Clear() { Storage.clear(); }
bool GetBit(int n) const { int off = (n >> 5); int mask = 1 << (n & 31); return (Storage[off] & mask) != 0; }
void SetBit(int n, bool v) { int off = (n >> 5); int mask = 1 << (n & 31); if (v) Storage[off] |= mask; else Storage[off] &= ~mask; }
while (n <= n2)
{
int a_mod = (n & 31);
int b_mod = ((n2 >= n + 31) ? 31 : (n2 & 31)) + 1;
ImU32 mask = (ImU32)(((ImU64)1 << b_mod) - 1) & ~(ImU32)(((ImU64)1 << a_mod) - 1);
arr[n >> 5] |= mask;
n = (n + 32) & ~31;
}
}
// Helper: ImBitVector
// Store 1-bit per value.
struct IMGUI_API ImBitVector
{
ImVector<ImU32> Storage;
void Create(int sz) { Storage.resize((sz + 31) >> 5); memset(Storage.Data, 0, (size_t)Storage.Size * sizeof(Storage.Data[0])); }
void Clear() { Storage.clear(); }
bool TestBit(int n) const { IM_ASSERT(n < (Storage.Size << 5)); return ImBitArrayTestBit(Storage.Data, n); }
void SetBit(int n) { IM_ASSERT(n < (Storage.Size << 5)); ImBitArraySetBit(Storage.Data, n); }
void ClearBit(int n) { IM_ASSERT(n < (Storage.Size << 5)); ImBitArrayClearBit(Storage.Data, n); }
};
// Helper: ImPool<>
@ -1288,7 +1310,8 @@ struct ImGuiContext
// Drag and Drop
bool DragDropActive;
bool DragDropWithinSourceOrTarget; // Set when within a BeginDragDropXXX/EndDragDropXXX block.
bool DragDropWithinSource; // Set when within a BeginDragDropXXX/EndDragDropXXX block for a drag source.
bool DragDropWithinTarget; // Set when within a BeginDragDropXXX/EndDragDropXXX block for a drag target.
ImGuiDragDropFlags DragDropSourceFlags;
int DragDropSourceFrameCount;
int DragDropMouseButton;
@ -1455,7 +1478,7 @@ struct ImGuiContext
DimBgRatio = 0.0f;
MouseCursor = ImGuiMouseCursor_Arrow;
DragDropActive = DragDropWithinSourceOrTarget = false;
DragDropActive = DragDropWithinSource = DragDropWithinTarget = false;
DragDropSourceFlags = ImGuiDragDropFlags_None;
DragDropSourceFrameCount = -1;
DragDropMouseButton = -1;
@ -2047,8 +2070,7 @@ namespace ImGui
IMGUI_API void RenderTextEllipsis(ImDrawList* draw_list, const ImVec2& pos_min, const ImVec2& pos_max, float clip_max_x, float ellipsis_max_x, const char* text, const char* text_end, const ImVec2* text_size_if_known);
IMGUI_API void RenderFrame(ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, bool border = true, float rounding = 0.0f);
IMGUI_API void RenderFrameBorder(ImVec2 p_min, ImVec2 p_max, float rounding = 0.0f);
IMGUI_API void RenderColorRectWithAlphaCheckerboard(ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, float grid_step, ImVec2 grid_off, float rounding = 0.0f, int rounding_corners_flags = ~0);
IMGUI_API void RenderCheckMark(ImVec2 pos, ImU32 col, float sz);
IMGUI_API void RenderColorRectWithAlphaCheckerboard(ImDrawList* draw_list, ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, float grid_step, ImVec2 grid_off, float rounding = 0.0f, int rounding_corners_flags = ~0);
IMGUI_API void RenderNavHighlight(const ImRect& bb, ImGuiID id, ImGuiNavHighlightFlags flags = ImGuiNavHighlightFlags_TypeDefault); // Navigation highlight
IMGUI_API void RenderMouseCursor(ImVec2 pos, float scale, ImGuiMouseCursor mouse_cursor = ImGuiMouseCursor_Arrow);
IMGUI_API const char* FindRenderedTextEnd(const char* text, const char* text_end = NULL); // Find the optional ## from which we stop displaying text.
@ -2057,6 +2079,7 @@ namespace ImGui
// Render helpers (those functions don't access any ImGui state!)
IMGUI_API void RenderArrow(ImDrawList* draw_list, ImVec2 pos, ImU32 col, ImGuiDir dir, float scale = 1.0f);
IMGUI_API void RenderBullet(ImDrawList* draw_list, ImVec2 pos, ImU32 col);
IMGUI_API void RenderCheckMark(ImDrawList* draw_list, ImVec2 pos, ImU32 col, float sz);
IMGUI_API void RenderMouseCursor(ImDrawList* draw_list, ImVec2 pos, float scale, ImGuiMouseCursor mouse_cursor, ImU32 col_fill, ImU32 col_border, ImU32 col_shadow);
IMGUI_API void RenderArrowPointingAt(ImDrawList* draw_list, ImVec2 pos, ImVec2 half_sz, ImGuiDir direction, ImU32 col);
IMGUI_API void RenderArrowDockMenu(ImDrawList* draw_list, ImVec2 p_min, float sz, ImU32 col);

56
imgui_widgets.cpp
View File

@ -1051,7 +1051,7 @@ bool ImGui::Checkbox(const char* label, bool* v)
else if (*v)
{
const float pad = ImMax(1.0f, IM_FLOOR(square_sz / 6.0f));
RenderCheckMark(check_bb.Min + ImVec2(pad, pad), check_col, square_sz - pad*2.0f);
RenderCheckMark(window->DrawList, check_bb.Min + ImVec2(pad, pad), check_col, square_sz - pad*2.0f);
}
if (g.LogEnabled)
@ -4503,52 +4503,6 @@ bool ImGui::ColorPicker3(const char* label, float col[3], ImGuiColorEditFlags fl
return true;
}
static inline ImU32 ImAlphaBlendColor(ImU32 col_a, ImU32 col_b)
{
float t = ((col_b >> IM_COL32_A_SHIFT) & 0xFF) / 255.f;
int r = ImLerp((int)(col_a >> IM_COL32_R_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_R_SHIFT) & 0xFF, t);
int g = ImLerp((int)(col_a >> IM_COL32_G_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_G_SHIFT) & 0xFF, t);
int b = ImLerp((int)(col_a >> IM_COL32_B_SHIFT) & 0xFF, (int)(col_b >> IM_COL32_B_SHIFT) & 0xFF, t);
return IM_COL32(r, g, b, 0xFF);
}
// Helper for ColorPicker4()
// NB: This is rather brittle and will show artifact when rounding this enabled if rounded corners overlap multiple cells. Caller currently responsible for avoiding that.
// I spent a non reasonable amount of time trying to getting this right for ColorButton with rounding+anti-aliasing+ImGuiColorEditFlags_HalfAlphaPreview flag + various grid sizes and offsets, and eventually gave up... probably more reasonable to disable rounding alltogether.
void ImGui::RenderColorRectWithAlphaCheckerboard(ImVec2 p_min, ImVec2 p_max, ImU32 col, float grid_step, ImVec2 grid_off, float rounding, int rounding_corners_flags)
{
ImGuiWindow* window = GetCurrentWindow();
if (((col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT) < 0xFF)
{
ImU32 col_bg1 = GetColorU32(ImAlphaBlendColor(IM_COL32(204,204,204,255), col));
ImU32 col_bg2 = GetColorU32(ImAlphaBlendColor(IM_COL32(128,128,128,255), col));
window->DrawList->AddRectFilled(p_min, p_max, col_bg1, rounding, rounding_corners_flags);
int yi = 0;
for (float y = p_min.y + grid_off.y; y < p_max.y; y += grid_step, yi++)
{
float y1 = ImClamp(y, p_min.y, p_max.y), y2 = ImMin(y + grid_step, p_max.y);
if (y2 <= y1)
continue;
for (float x = p_min.x + grid_off.x + (yi & 1) * grid_step; x < p_max.x; x += grid_step * 2.0f)
{
float x1 = ImClamp(x, p_min.x, p_max.x), x2 = ImMin(x + grid_step, p_max.x);
if (x2 <= x1)
continue;
int rounding_corners_flags_cell = 0;
if (y1 <= p_min.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopRight; }
if (y2 >= p_max.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotRight; }
rounding_corners_flags_cell &= rounding_corners_flags;
window->DrawList->AddRectFilled(ImVec2(x1,y1), ImVec2(x2,y2), col_bg2, rounding_corners_flags_cell ? rounding : 0.0f, rounding_corners_flags_cell);
}
}
}
else
{
window->DrawList->AddRectFilled(p_min, p_max, col, rounding, rounding_corners_flags);
}
}
// Helper for ColorPicker4()
static void RenderArrowsForVerticalBar(ImDrawList* draw_list, ImVec2 pos, ImVec2 half_sz, float bar_w, float alpha)
{
@ -4919,7 +4873,7 @@ bool ImGui::ColorPicker4(const char* label, float col[4], ImGuiColorEditFlags fl
{
float alpha = ImSaturate(col[3]);
ImRect bar1_bb(bar1_pos_x, picker_pos.y, bar1_pos_x + bars_width, picker_pos.y + sv_picker_size);
RenderColorRectWithAlphaCheckerboard(bar1_bb.Min, bar1_bb.Max, 0, bar1_bb.GetWidth() / 2.0f, ImVec2(0.0f, 0.0f));
RenderColorRectWithAlphaCheckerboard(draw_list, bar1_bb.Min, bar1_bb.Max, 0, bar1_bb.GetWidth() / 2.0f, ImVec2(0.0f, 0.0f));
draw_list->AddRectFilledMultiColor(bar1_bb.Min, bar1_bb.Max, user_col32_striped_of_alpha, user_col32_striped_of_alpha, user_col32_striped_of_alpha & ~IM_COL32_A_MASK, user_col32_striped_of_alpha & ~IM_COL32_A_MASK);
float bar1_line_y = IM_ROUND(picker_pos.y + (1.0f - alpha) * sv_picker_size);
RenderFrameBorder(bar1_bb.Min, bar1_bb.Max, 0.0f);
@ -4983,7 +4937,7 @@ bool ImGui::ColorButton(const char* desc_id, const ImVec4& col, ImGuiColorEditFl
if ((flags & ImGuiColorEditFlags_AlphaPreviewHalf) && col_rgb.w < 1.0f)
{
float mid_x = IM_ROUND((bb_inner.Min.x + bb_inner.Max.x) * 0.5f);
RenderColorRectWithAlphaCheckerboard(ImVec2(bb_inner.Min.x + grid_step, bb_inner.Min.y), bb_inner.Max, GetColorU32(col_rgb), grid_step, ImVec2(-grid_step + off, off), rounding, ImDrawCornerFlags_TopRight| ImDrawCornerFlags_BotRight);
RenderColorRectWithAlphaCheckerboard(window->DrawList, ImVec2(bb_inner.Min.x + grid_step, bb_inner.Min.y), bb_inner.Max, GetColorU32(col_rgb), grid_step, ImVec2(-grid_step + off, off), rounding, ImDrawCornerFlags_TopRight| ImDrawCornerFlags_BotRight);
window->DrawList->AddRectFilled(bb_inner.Min, ImVec2(mid_x, bb_inner.Max.y), GetColorU32(col_rgb_without_alpha), rounding, ImDrawCornerFlags_TopLeft|ImDrawCornerFlags_BotLeft);
}
else
@ -4991,7 +4945,7 @@ bool ImGui::ColorButton(const char* desc_id, const ImVec4& col, ImGuiColorEditFl
// Because GetColorU32() multiplies by the global style Alpha and we don't want to display a checkerboard if the source code had no alpha
ImVec4 col_source = (flags & ImGuiColorEditFlags_AlphaPreview) ? col_rgb : col_rgb_without_alpha;
if (col_source.w < 1.0f)
RenderColorRectWithAlphaCheckerboard(bb_inner.Min, bb_inner.Max, GetColorU32(col_source), grid_step, ImVec2(off, off), rounding);
RenderColorRectWithAlphaCheckerboard(window->DrawList, bb_inner.Min, bb_inner.Max, GetColorU32(col_source), grid_step, ImVec2(off, off), rounding);
else
window->DrawList->AddRectFilled(bb_inner.Min, bb_inner.Max, GetColorU32(col_source), rounding, ImDrawCornerFlags_All);
}
@ -6457,7 +6411,7 @@ bool ImGui::MenuItem(const char* label, const char* shortcut, bool selected, boo
PopStyleColor();
}
if (selected)
RenderCheckMark(pos + ImVec2(window->DC.MenuColumns.Pos[2] + extra_w + g.FontSize * 0.40f, g.FontSize * 0.134f * 0.5f), GetColorU32(enabled ? ImGuiCol_Text : ImGuiCol_TextDisabled), g.FontSize * 0.866f);
RenderCheckMark(window->DrawList, pos + ImVec2(window->DC.MenuColumns.Pos[2] + extra_w + g.FontSize * 0.40f, g.FontSize * 0.134f * 0.5f), GetColorU32(enabled ? ImGuiCol_Text : ImGuiCol_TextDisabled), g.FontSize * 0.866f);
}
IMGUI_TEST_ENGINE_ITEM_INFO(window->DC.LastItemId, label, window->DC.ItemFlags | ImGuiItemStatusFlags_Checkable | (selected ? ImGuiItemStatusFlags_Checked : 0));

2
misc/freetype/README.md
View File

@ -5,7 +5,7 @@ Build font atlases using FreeType instead of stb_truetype (which is the default
### Usage
1. Get latest FreeType binaries or build yourself (under Windows you may use vcpkg with `vcpkg install freetype`).
1. Get latest FreeType binaries or build yourself (under Windows you may use vcpkg with `vcpkg install freetype`, `vcpkg integrate install`).
2. Add imgui_freetype.h/cpp alongside your imgui sources.
3. Include imgui_freetype.h after imgui.h.
4. Call `ImGuiFreeType::BuildFontAtlas()` *BEFORE* calling `ImFontAtlas::GetTexDataAsRGBA32()` or `ImFontAtlas::Build()` (so normal Build() won't be called):

38
misc/freetype/imgui_freetype.cpp
View File

@ -278,12 +278,18 @@ namespace
}
}
#ifndef STB_RECT_PACK_IMPLEMENTATION // in case the user already have an implementation in the _same_ compilation unit (e.g. unity builds)
#define STBRP_ASSERT(x) IM_ASSERT(x)
#ifndef STB_RECT_PACK_IMPLEMENTATION // in case the user already have an implementation in the _same_ compilation unit (e.g. unity builds)
#ifndef IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
#define STBRP_ASSERT(x) IM_ASSERT(x)
#define STBRP_STATIC
#define STB_RECT_PACK_IMPLEMENTATION
#endif
#ifdef IMGUI_STB_RECT_PACK_FILENAME
#include IMGUI_STB_RECT_PACK_FILENAME
#else
#include "imstb_rectpack.h"
#endif
#endif
struct ImFontBuildSrcGlyphFT
{
@ -300,7 +306,7 @@ struct ImFontBuildSrcDataFT
int DstIndex; // Index into atlas->Fonts[] and dst_tmp_array[]
int GlyphsHighest; // Highest requested codepoint
int GlyphsCount; // Glyph count (excluding missing glyphs and glyphs already set by an earlier source font)
ImBoolVector GlyphsSet; // Glyph bit map (random access, 1-bit per codepoint. This will be a maximum of 8KB)
ImBitVector GlyphsSet; // Glyph bit map (random access, 1-bit per codepoint. This will be a maximum of 8KB)
ImVector<ImFontBuildSrcGlyphFT> GlyphsList;
};
@ -310,7 +316,7 @@ struct ImFontBuildDstDataFT
int SrcCount; // Number of source fonts targeting this destination font.
int GlyphsHighest;
int GlyphsCount;
ImBoolVector GlyphsSet; // This is used to resolve collision when multiple sources are merged into a same destination font.
ImBitVector GlyphsSet; // This is used to resolve collision when multiple sources are merged into a same destination font.
};
bool ImFontAtlasBuildWithFreeType(FT_Library ft_library, ImFontAtlas* atlas, unsigned int extra_flags)
@ -370,14 +376,14 @@ bool ImFontAtlasBuildWithFreeType(FT_Library ft_library, ImFontAtlas* atlas, uns
{
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
ImFontBuildDstDataFT& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
src_tmp.GlyphsSet.Resize(src_tmp.GlyphsHighest + 1);
src_tmp.GlyphsSet.Create(src_tmp.GlyphsHighest + 1);
if (dst_tmp.GlyphsSet.Storage.empty())
dst_tmp.GlyphsSet.Resize(dst_tmp.GlyphsHighest + 1);
dst_tmp.GlyphsSet.Create(dst_tmp.GlyphsHighest + 1);
for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
for (int codepoint = src_range[0]; codepoint <= src_range[1]; codepoint++)
{
if (dst_tmp.GlyphsSet.GetBit(codepoint)) // Don't overwrite existing glyphs. We could make this an option (e.g. MergeOverwrite)
if (dst_tmp.GlyphsSet.TestBit(codepoint)) // Don't overwrite existing glyphs. We could make this an option (e.g. MergeOverwrite)
continue;
uint32_t glyph_index = FT_Get_Char_Index(src_tmp.Font.Face, codepoint); // It is actually in the font? (FIXME-OPT: We are not storing the glyph_index..)
if (glyph_index == 0)
@ -386,8 +392,8 @@ bool ImFontAtlasBuildWithFreeType(FT_Library ft_library, ImFontAtlas* atlas, uns
// Add to avail set/counters
src_tmp.GlyphsCount++;
dst_tmp.GlyphsCount++;
src_tmp.GlyphsSet.SetBit(codepoint, true);
dst_tmp.GlyphsSet.SetBit(codepoint, true);
src_tmp.GlyphsSet.SetBit(codepoint);
dst_tmp.GlyphsSet.SetBit(codepoint);
total_glyphs_count++;
}
}
@ -398,13 +404,13 @@ bool ImFontAtlasBuildWithFreeType(FT_Library ft_library, ImFontAtlas* atlas, uns
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
src_tmp.GlyphsList.reserve(src_tmp.GlyphsCount);
IM_ASSERT(sizeof(src_tmp.GlyphsSet.Storage.Data[0]) == sizeof(int));
const int* it_begin = src_tmp.GlyphsSet.Storage.begin();
const int* it_end = src_tmp.GlyphsSet.Storage.end();
for (const int* it = it_begin; it < it_end; it++)
if (int entries_32 = *it)
for (int bit_n = 0; bit_n < 32; bit_n++)
if (entries_32 & (1 << bit_n))
IM_ASSERT(sizeof(src_tmp.GlyphsSet.Storage.Data[0]) == sizeof(ImU32));
const ImU32* it_begin = src_tmp.GlyphsSet.Storage.begin();
const ImU32* it_end = src_tmp.GlyphsSet.Storage.end();
for (const ImU32* it = it_begin; it < it_end; it++)
if (ImU32 entries_32 = *it)
for (ImU32 bit_n = 0; bit_n < 32; bit_n++)
if (entries_32 & ((ImU32)1 << bit_n))
{
ImFontBuildSrcGlyphFT src_glyph;
memset(&src_glyph, 0, sizeof(src_glyph));