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Updated ImGui.

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This commit is contained in:
Branimir Karadžić 2016-11-27 21:58:08 -08:00
parent 77b650d9a2
commit 88ba04a4c9
2 changed files with 52 additions and 32 deletions
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83
3rdparty/ocornut-imgui/imgui.cpp vendored
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@ -1298,6 +1298,22 @@ void ImGui::ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float&
}
}
FILE* ImFileOpen(const char* filename, const char* mode)
{
#ifdef _MSC_VER
// We need a fopen() wrapper because MSVC/Windows fopen doesn't handle UTF-8 filenames. Converting both strings from UTF-8 to wchar format (using a single allocation, because we can)
const int filename_wsize = ImTextCountCharsFromUtf8(filename, NULL) + 1;
const int mode_wsize = ImTextCountCharsFromUtf8(mode, NULL) + 1;
ImVector<ImWchar> buf;
buf.resize(filename_wsize + mode_wsize);
ImTextStrFromUtf8(&buf[0], filename_wsize, filename, NULL);
ImTextStrFromUtf8(&buf[filename_wsize], mode_wsize, mode, NULL);
return _wfopen((wchar_t*)&buf[0], (wchar_t*)&buf[filename_wsize]);
#else
return fopen(filename, mode);
#endif
}
// Load file content into memory
// Memory allocated with ImGui::MemAlloc(), must be freed by user using ImGui::MemFree()
void* ImLoadFileToMemory(const char* filename, const char* file_open_mode, int* out_file_size, int padding_bytes)
@ -1307,7 +1323,7 @@ void* ImLoadFileToMemory(const char* filename, const char* file_open_mode, int*
*out_file_size = 0;
FILE* f;
if ((f = fopen(filename, file_open_mode)) == NULL)
if ((f = ImFileOpen(filename, file_open_mode)) == NULL)
return NULL;
long file_size_signed;
@ -2506,7 +2522,7 @@ static void SaveSettings()
// Write .ini file
// If a window wasn't opened in this session we preserve its settings
FILE* f = fopen(filename, "wt");
FILE* f = ImFileOpen(filename, "wt");
if (!f)
return;
for (int i = 0; i != g.Settings.Size; i++)
@ -5790,7 +5806,7 @@ void ImGui::LogToFile(int max_depth, const char* filename)
return;
}
g.LogFile = fopen(filename, "ab");
g.LogFile = ImFileOpen(filename, "ab");
if (!g.LogFile)
{
IM_ASSERT(g.LogFile != NULL); // Consider this an error
@ -6436,6 +6452,28 @@ float ImGui::RoundScalar(float value, int decimal_precision)
return negative ? -value : value;
}
static inline float SliderBehaviorCalcRatioFromValue(float v, float v_min, float v_max, float power, float linear_zero_pos)
{
const bool is_non_linear = (power < 1.0f-0.00001f) || (power > 1.0f+0.00001f);
const float v_clamped = (v_min < v_max) ? ImClamp(v, v_min, v_max) : ImClamp(v, v_max, v_min);
if (is_non_linear)
{
if (v_clamped < 0.0f)
{
const float f = 1.0f - (v_clamped - v_min) / (ImMin(0.0f,v_max) - v_min);
return (1.0f - powf(f, 1.0f/power)) * linear_zero_pos;
}
else
{
const float f = (v_clamped - ImMax(0.0f,v_min)) / (v_max - ImMax(0.0f,v_min));
return linear_zero_pos + powf(f, 1.0f/power) * (1.0f - linear_zero_pos);
}
}
// Linear slider
return (v_clamped - v_min) / (v_max - v_min);
}
bool ImGui::SliderBehavior(const ImRect& frame_bb, ImGuiID id, float* v, float v_min, float v_max, float power, int decimal_precision, ImGuiSliderFlags flags)
{
ImGuiContext& g = *GImGui;
@ -6445,7 +6483,7 @@ bool ImGui::SliderBehavior(const ImRect& frame_bb, ImGuiID id, float* v, float v
// Draw frame
RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
const bool is_non_linear = fabsf(power - 1.0f) > 0.0001f;
const bool is_non_linear = (power < 1.0f-0.00001f) || (power > 1.0f+0.00001f);
const bool is_horizontal = (flags & ImGuiSliderFlags_Vertical) == 0;
const float grab_padding = 2.0f;
@ -6481,18 +6519,18 @@ bool ImGui::SliderBehavior(const ImRect& frame_bb, ImGuiID id, float* v, float v
if (g.IO.MouseDown[0])
{
const float mouse_abs_pos = is_horizontal ? g.IO.MousePos.x : g.IO.MousePos.y;
float normalized_pos = ImClamp((mouse_abs_pos - slider_usable_pos_min) / slider_usable_sz, 0.0f, 1.0f);
float clicked_t = ImClamp((mouse_abs_pos - slider_usable_pos_min) / slider_usable_sz, 0.0f, 1.0f);
if (!is_horizontal)
normalized_pos = 1.0f - normalized_pos;
clicked_t = 1.0f - clicked_t;
float new_value;
if (is_non_linear)
{
// Account for logarithmic scale on both sides of the zero
if (normalized_pos < linear_zero_pos)
if (clicked_t < linear_zero_pos)
{
// Negative: rescale to the negative range before powering
float a = 1.0f - (normalized_pos / linear_zero_pos);
float a = 1.0f - (clicked_t / linear_zero_pos);
a = powf(a, power);
new_value = ImLerp(ImMin(v_max,0.0f), v_min, a);
}
@ -6501,9 +6539,9 @@ bool ImGui::SliderBehavior(const ImRect& frame_bb, ImGuiID id, float* v, float v
// Positive: rescale to the positive range before powering
float a;
if (fabsf(linear_zero_pos - 1.0f) > 1.e-6f)
a = (normalized_pos - linear_zero_pos) / (1.0f - linear_zero_pos);
a = (clicked_t - linear_zero_pos) / (1.0f - linear_zero_pos);
else
a = normalized_pos;
a = clicked_t;
a = powf(a, power);
new_value = ImLerp(ImMax(v_min,0.0f), v_max, a);
}
@ -6511,12 +6549,12 @@ bool ImGui::SliderBehavior(const ImRect& frame_bb, ImGuiID id, float* v, float v
else
{
// Linear slider
new_value = ImLerp(v_min, v_max, normalized_pos);
new_value = ImLerp(v_min, v_max, clicked_t);
}
// Round past decimal precision
new_value = RoundScalar(new_value, decimal_precision);
if (*v != new_value)
if (*v != new_value && (v_min != v_max))
{
*v = new_value;
value_changed = true;
@ -6529,26 +6567,7 @@ bool ImGui::SliderBehavior(const ImRect& frame_bb, ImGuiID id, float* v, float v
}
// Calculate slider grab positioning
float grab_t;
if (is_non_linear)
{
float v_clamped = ImClamp(*v, v_min, v_max);
if (v_clamped < 0.0f)
{
const float f = 1.0f - (v_clamped - v_min) / (ImMin(0.0f,v_max) - v_min);
grab_t = (1.0f - powf(f, 1.0f/power)) * linear_zero_pos;
}
else
{
const float f = (v_clamped - ImMax(0.0f,v_min)) / (v_max - ImMax(0.0f,v_min));
grab_t = linear_zero_pos + powf(f, 1.0f/power) * (1.0f - linear_zero_pos);
}
}
else
{
// Linear slider
grab_t = (ImClamp(*v, v_min, v_max) - v_min) / (v_max - v_min);
}
float grab_t = SliderBehaviorCalcRatioFromValue(*v, v_min, v_max, power, linear_zero_pos);
// Draw
if (!is_horizontal)

1
3rdparty/ocornut-imgui/imgui_internal.h vendored
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@ -89,6 +89,7 @@ IMGUI_API int ImTextCountUtf8BytesFromStr(const ImWchar* in_text, cons
// Helpers: Misc
IMGUI_API ImU32 ImHash(const void* data, int data_size, ImU32 seed = 0); // Pass data_size==0 for zero-terminated strings
IMGUI_API void* ImLoadFileToMemory(const char* filename, const char* file_open_mode, int* out_file_size = NULL, int padding_bytes = 0);
IMGUI_API FILE* ImOpenFile(const char* filename, const char* file_open_mode);
IMGUI_API bool ImIsPointInTriangle(const ImVec2& p, const ImVec2& a, const ImVec2& b, const ImVec2& c);
static inline bool ImCharIsSpace(int c) { return c == ' ' || c == '\t' || c == 0x3000; }
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; }