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Internals: Renamed SliderCalcRatioFromValueT() -> ScaleRatioFromValueT(), SliderCalcValueFromRatioT() -> ScaleValueFromRatioT(). 

Replaced drag/slider flags with a single bool is_logarithmic in those functions.
pull/3412/head
omar 4 years ago
committed by ocornut
parent
fb0f2ebd41
commit
7f8f0096d8
2 changed files with 18 additions and 20 deletions
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  1. 4
      imgui_internal.h
  2. 34
      imgui_widgets.cpp

4
imgui_internal.h
View File

@ -1993,10 +1993,10 @@ namespace ImGui
// Template functions are instantiated in imgui_widgets.cpp for a finite number of types.
// To use them externally (for custom widget) you may need an "extern template" statement in your code in order to link to existing instances and silence Clang warnings (see #2036).
// e.g. " extern template IMGUI_API float RoundScalarWithFormatT<float, float>(const char* format, ImGuiDataType data_type, float v); "
template<typename T, typename FLOAT_T> IMGUI_API float ScaleRatioFromValueT(ImGuiDataType data_type, T v, T v_min, T v_max, bool is_logarithmic, float logarithmic_zero_epsilon, float zero_deadzone_size);
template<typename T, typename FLOAT_T> IMGUI_API T ScaleValueFromRatioT(ImGuiDataType data_type, float t, T v_min, T v_max, bool is_logarithmic, float logarithmic_zero_epsilon, float zero_deadzone_size);
template<typename T, typename SIGNED_T, typename FLOAT_T> IMGUI_API bool DragBehaviorT(ImGuiDataType data_type, T* v, float v_speed, T v_min, T v_max, const char* format, ImGuiDragFlags flags);
template<typename T, typename SIGNED_T, typename FLOAT_T> IMGUI_API bool SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, T* v, T v_min, T v_max, const char* format, ImGuiSliderFlags flags, ImRect* out_grab_bb);
template<typename T, typename FLOAT_T> IMGUI_API float SliderCalcRatioFromValueT(ImGuiDataType data_type, T v, T v_min, T v_max, float logarithmic_zero_epsilon, float zero_deadzone_size, ImGuiSliderFlags flags);
template<typename T, typename FLOAT_T> IMGUI_API T SliderCalcValueFromRatioT(ImGuiDataType data_type, float t, T v_min, T v_max, float logarithmic_zero_epsilon, float zero_deadzone_size, ImGuiSliderFlags flags);
template<typename T, typename SIGNED_T> IMGUI_API T RoundScalarWithFormatT(const char* format, ImGuiDataType data_type, T v);
// Data type helpers

34
imgui_widgets.cpp
View File

@ -2060,8 +2060,6 @@ bool ImGui::DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const
TYPE v_cur = *v;
FLOATTYPE v_old_ref_for_accum_remainder = (FLOATTYPE)0.0f;
IM_ASSERT(ImGuiDragFlags_Logarithmic == ImGuiSliderFlags_Logarithmic);
float logarithmic_zero_epsilon = 0.0f; // Only valid when is_logarithmic is true
const float zero_deadzone_halfsize = 0.0f; // Drag widgets have no deadzone (as it doesn't make sense)
if (is_logarithmic)
@ -2071,9 +2069,9 @@ bool ImGui::DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const
logarithmic_zero_epsilon = ImPow(0.1f, (float)decimal_precision);
// Convert to parametric space, apply delta, convert back
float v_old_parametric = SliderCalcRatioFromValueT<TYPE, FLOATTYPE>(data_type, v_cur, v_min, v_max, logarithmic_zero_epsilon, zero_deadzone_halfsize, flags);
float v_old_parametric = ScaleRatioFromValueT<TYPE, FLOATTYPE>(data_type, v_cur, v_min, v_max, is_logarithmic, logarithmic_zero_epsilon, zero_deadzone_halfsize);
float v_new_parametric = v_old_parametric + g.DragCurrentAccum;
v_cur = SliderCalcValueFromRatioT<TYPE, FLOATTYPE>(data_type, v_new_parametric, v_min, v_max, logarithmic_zero_epsilon, zero_deadzone_halfsize, flags);
v_cur = ScaleValueFromRatioT<TYPE, FLOATTYPE>(data_type, v_new_parametric, v_min, v_max, is_logarithmic, logarithmic_zero_epsilon, zero_deadzone_halfsize);
v_old_ref_for_accum_remainder = v_old_parametric;
}
else
@ -2090,7 +2088,7 @@ bool ImGui::DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const
if (is_logarithmic)
{
// Convert to parametric space, apply delta, convert back
float v_new_parametric = SliderCalcRatioFromValueT<TYPE, FLOATTYPE>(data_type, v_cur, v_min, v_max, logarithmic_zero_epsilon, zero_deadzone_halfsize, flags);
float v_new_parametric = ScaleRatioFromValueT<TYPE, FLOATTYPE>(data_type, v_cur, v_min, v_max, is_logarithmic, logarithmic_zero_epsilon, zero_deadzone_halfsize);
g.DragCurrentAccum -= (float)(v_new_parametric - v_old_ref_for_accum_remainder);
}
else
@ -2403,6 +2401,8 @@ bool ImGui::DragScalarN(const char* label, ImGuiDataType data_type, void* p_data
//-------------------------------------------------------------------------
// [SECTION] Widgets: SliderScalar, SliderFloat, SliderInt, etc.
//-------------------------------------------------------------------------
// - ScaleRatioFromValueT<> [Internal]
// - ScaleValueFromRatioT<> [Internal]
// - SliderBehaviorT<>() [Internal]
// - SliderBehavior() [Internal]
// - SliderScalar()
@ -2421,14 +2421,14 @@ bool ImGui::DragScalarN(const char* label, ImGuiDataType data_type, void* p_data
// - VSliderInt()
//-------------------------------------------------------------------------
// Convert a value v in the output space of a slider into a parametric position on the slider itself (the logical opposite of SliderCalcValueFromRatioT)
// Convert a value v in the output space of a slider into a parametric position on the slider itself (the logical opposite of ScaleValueFromRatioT)
template<typename TYPE, typename FLOATTYPE>
float ImGui::SliderCalcRatioFromValueT(ImGuiDataType data_type, TYPE v, TYPE v_min, TYPE v_max, float logarithmic_zero_epsilon, float zero_deadzone_halfsize, ImGuiSliderFlags flags)
float ImGui::ScaleRatioFromValueT(ImGuiDataType data_type, TYPE v, TYPE v_min, TYPE v_max, bool is_logarithmic, float logarithmic_zero_epsilon, float zero_deadzone_halfsize)
{
if (v_min == v_max)
return 0.0f;
IM_UNUSED(data_type);
const bool is_logarithmic = (flags & ImGuiSliderFlags_Logarithmic) && (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double);
const TYPE v_clamped = (v_min < v_max) ? ImClamp(v, v_min, v_max) : ImClamp(v, v_max, v_min);
if (is_logarithmic)
{
@ -2477,15 +2477,13 @@ float ImGui::SliderCalcRatioFromValueT(ImGuiDataType data_type, TYPE v, TYPE v_m
return (float)((FLOATTYPE)(v_clamped - v_min) / (FLOATTYPE)(v_max - v_min));
}
// Convert a parametric position on a slider into a value v in the output space (the logical opposite of SliderCalcRatioFromValueT)
// Convert a parametric position on a slider into a value v in the output space (the logical opposite of ScaleRatioFromValueT)
template<typename TYPE, typename FLOATTYPE>
TYPE ImGui::SliderCalcValueFromRatioT(ImGuiDataType data_type, float t, TYPE v_min, TYPE v_max, float logarithmic_zero_epsilon, float zero_deadzone_halfsize, ImGuiSliderFlags flags)
TYPE ImGui::ScaleValueFromRatioT(ImGuiDataType data_type, float t, TYPE v_min, TYPE v_max, bool is_logarithmic, float logarithmic_zero_epsilon, float zero_deadzone_halfsize)
{
if (v_min == v_max)
return (TYPE)0.0f;
const bool is_decimal = (data_type == ImGuiDataType_Float) || (data_type == ImGuiDataType_Double);
const bool is_logarithmic = (flags & ImGuiSliderFlags_Logarithmic) && (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double);
TYPE result;
if (is_logarithmic)
@ -2647,8 +2645,8 @@ bool ImGui::SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_typ
}
else if (g.SliderCurrentAccumDirty)
{
clicked_t = SliderCalcRatioFromValueT<TYPE, FLOATTYPE>(data_type, *v, v_min, v_max, logarithmic_zero_epsilon, zero_deadzone_halfsize, flags);
clicked_t = ScaleRatioFromValueT<TYPE, FLOATTYPE>(data_type, *v, v_min, v_max, is_logarithmic, logarithmic_zero_epsilon, zero_deadzone_halfsize);
if ((clicked_t >= 1.0f && delta > 0.0f) || (clicked_t <= 0.0f && delta < 0.0f)) // This is to avoid applying the saturation when already past the limits
{
set_new_value = false;
@ -2661,10 +2659,10 @@ bool ImGui::SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_typ
clicked_t = ImSaturate(clicked_t + delta);
// Calculate what our "new" clicked_t will be, and thus how far we actually moved the slider, and subtract this from the accumulator
TYPE v_new = SliderCalcValueFromRatioT<TYPE, FLOATTYPE>(data_type, clicked_t, v_min, v_max, logarithmic_zero_epsilon, zero_deadzone_halfsize, flags);
TYPE v_new = ScaleValueFromRatioT<TYPE, FLOATTYPE>(data_type, clicked_t, v_min, v_max, is_logarithmic, logarithmic_zero_epsilon, zero_deadzone_halfsize);
if (!(flags & ImGuiSliderFlags_NoRoundToFormat))
v_new = RoundScalarWithFormatT<TYPE, SIGNEDTYPE>(format, data_type, v_new);
float new_clicked_t = SliderCalcRatioFromValueT<TYPE, FLOATTYPE>(data_type, v_new, v_min, v_max, logarithmic_zero_epsilon, zero_deadzone_halfsize, flags);
float new_clicked_t = ScaleRatioFromValueT<TYPE, FLOATTYPE>(data_type, v_new, v_min, v_max, is_logarithmic, logarithmic_zero_epsilon, zero_deadzone_halfsize);
if (delta > 0)
g.SliderCurrentAccum -= ImMin(new_clicked_t - old_clicked_t, delta);
@ -2678,7 +2676,7 @@ bool ImGui::SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_typ
if (set_new_value)
{
TYPE v_new = SliderCalcValueFromRatioT<TYPE, FLOATTYPE>(data_type, clicked_t, v_min, v_max, logarithmic_zero_epsilon, zero_deadzone_halfsize, flags);
TYPE v_new = ScaleValueFromRatioT<TYPE, FLOATTYPE>(data_type, clicked_t, v_min, v_max, is_logarithmic, logarithmic_zero_epsilon, zero_deadzone_halfsize);
// Round to user desired precision based on format string
if (!(flags & ImGuiSliderFlags_NoRoundToFormat))
@ -2700,7 +2698,7 @@ bool ImGui::SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_typ
else
{
// Output grab position so it can be displayed by the caller
float grab_t = SliderCalcRatioFromValueT<TYPE, FLOATTYPE>(data_type, *v, v_min, v_max, logarithmic_zero_epsilon, zero_deadzone_halfsize, flags);
float grab_t = ScaleRatioFromValueT<TYPE, FLOATTYPE>(data_type, *v, v_min, v_max, is_logarithmic, logarithmic_zero_epsilon, zero_deadzone_halfsize);
if (axis == ImGuiAxis_Y)
grab_t = 1.0f - grab_t;
const float grab_pos = ImLerp(slider_usable_pos_min, slider_usable_pos_max, grab_t);

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