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InputInt, InputScalar: +/- buttons now respects the natural type limits instead of overflowing or underflowing the value.

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This commit is contained in:
omar 2019-02-27 18:59:17 +01:00
parent 736d3e2654
commit f02705fbaa
3 changed files with 26 additions and 22 deletions
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2
docs/CHANGELOG.txt
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@ -47,6 +47,8 @@ Other Changes:
- InputInt, InputFloat, InputScalar: Fix to keep the label of the +/- buttons centered when
style.FramePadding.x is abnormally larger than style.FramePadding.y. Since the buttons are
meant to be square (to align with e.g. color button) we always use FramePadding.y. (#2367)
- InputInt, InputScalar: +/- buttons now respects the natural type limits instead of
overflowing or underflowing the value.
- InputText: Fixed an edge case crash that would happen if another widget sharing the same ID
is being swapped with an InputText that has yet to be activated.
- InputText: Fixed various display corruption related to swapping the underlying buffer while

5
imgui_internal.h
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@ -225,12 +225,15 @@ static inline double ImAtof(const char* s)
static inline float ImFloorStd(float x) { return floorf(x); } // we already uses our own ImFloor() { return (float)(int)v } internally so the standard one wrapper is named differently (it's used by stb_truetype)
static inline float ImCeil(float x) { return ceilf(x); }
#endif
// - ImMin/ImMax/ImClamp/ImLerp/ImSwap are used by widgets which support for variety of types: signed/unsigned int/long long float/double, using templates here but we could also redefine them 6 times
// - ImMin/ImMax/ImClamp/ImLerp/ImSwap are used by widgets which support for variety of types: signed/unsigned int/long long float/double
// (Exceptionally using templates here but we could also redefine them for variety of types)
template<typename T> static inline T ImMin(T lhs, T rhs) { return lhs < rhs ? lhs : rhs; }
template<typename T> static inline T ImMax(T lhs, T rhs) { return lhs >= rhs ? lhs : rhs; }
template<typename T> static inline T ImClamp(T v, T mn, T mx) { return (v < mn) ? mn : (v > mx) ? mx : v; }
template<typename T> static inline T ImLerp(T a, T b, float t) { return (T)(a + (b - a) * t); }
template<typename T> static inline void ImSwap(T& a, T& b) { T tmp = a; a = b; b = tmp; }
template<typename T> static inline T ImAddClampOverflow(T a, T b, T mn, T mx) { if (b < 0 && (a < mn - b)) return mn; if (b > 0 && (a > mx - b)) return mx; return a + b; }
template<typename T> static inline T ImSubClampOverflow(T a, T b, T mn, T mx) { if (b > 0 && (a < mn + b)) return mn; if (b < 0 && (a > mx + b)) return mx; return a - b; }
// - Misc maths helpers
static inline ImVec2 ImMin(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(lhs.x < rhs.x ? lhs.x : rhs.x, lhs.y < rhs.y ? lhs.y : rhs.y); }
static inline ImVec2 ImMax(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(lhs.x >= rhs.x ? lhs.x : rhs.x, lhs.y >= rhs.y ? lhs.y : rhs.y); }

41
imgui_widgets.cpp
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@ -1568,51 +1568,50 @@ static inline int DataTypeFormatString(char* buf, int buf_size, ImGuiDataType da
return 0;
}
// FIXME: Adding support for clamping on boundaries of the data type would be nice.
static void DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg1, const void* arg2)
{
IM_ASSERT(op == '+' || op == '-');
switch (data_type)
{
case ImGuiDataType_S8:
if (op == '+') *(ImS8*)output = *(const ImS8*)arg1 + *(const ImS8*)arg2;
else if (op == '-') *(ImS8*)output = *(const ImS8*)arg1 - *(const ImS8*)arg2;
if (op == '+') { *(ImS8*)output = ImAddClampOverflow(*(const ImS8*)arg1, *(const ImS8*)arg2, IM_S8_MIN, IM_S8_MAX); }
if (op == '-') { *(ImS8*)output = ImSubClampOverflow(*(const ImS8*)arg1, *(const ImS8*)arg2, IM_S8_MIN, IM_S8_MAX); }
return;
case ImGuiDataType_U8:
if (op == '+') *(ImU8*)output = *(const ImU8*)arg1 + *(const ImU8*)arg2;
else if (op == '-') *(ImU8*)output = *(const ImU8*)arg1 - *(const ImU8*)arg2;
if (op == '+') { *(ImU8*)output = ImAddClampOverflow(*(const ImU8*)arg1, *(const ImU8*)arg2, IM_U8_MIN, IM_U8_MAX); }
if (op == '-') { *(ImU8*)output = ImSubClampOverflow(*(const ImU8*)arg1, *(const ImU8*)arg2, IM_U8_MIN, IM_U8_MAX); }
return;
case ImGuiDataType_S16:
if (op == '+') *(ImS16*)output = *(const ImS16*)arg1 + *(const ImS16*)arg2;
else if (op == '-') *(ImS16*)output = *(const ImS16*)arg1 - *(const ImS16*)arg2;
if (op == '+') { *(ImS16*)output = ImAddClampOverflow(*(const ImS16*)arg1, *(const ImS16*)arg2, IM_S16_MIN, IM_S16_MAX); }
if (op == '-') { *(ImS16*)output = ImSubClampOverflow(*(const ImS16*)arg1, *(const ImS16*)arg2, IM_S16_MIN, IM_S16_MAX); }
return;
case ImGuiDataType_U16:
if (op == '+') *(ImU16*)output = *(const ImU16*)arg1 + *(const ImU16*)arg2;
else if (op == '-') *(ImU16*)output = *(const ImU16*)arg1 - *(const ImU16*)arg2;
if (op == '+') { *(ImU16*)output = ImAddClampOverflow(*(const ImU16*)arg1, *(const ImU16*)arg2, IM_U16_MIN, IM_U16_MAX); }
if (op == '-') { *(ImU16*)output = ImSubClampOverflow(*(const ImU16*)arg1, *(const ImU16*)arg2, IM_U16_MIN, IM_U16_MAX); }
return;
case ImGuiDataType_S32:
if (op == '+') *(ImS32*)output = *(const ImS32*)arg1 + *(const ImS32*)arg2;
else if (op == '-') *(ImS32*)output = *(const ImS32*)arg1 - *(const ImS32*)arg2;
if (op == '+') { *(ImS32*)output = ImAddClampOverflow(*(const ImS32*)arg1, *(const ImS32*)arg2, IM_S32_MIN, IM_S32_MAX); }
if (op == '-') { *(ImS32*)output = ImSubClampOverflow(*(const ImS32*)arg1, *(const ImS32*)arg2, IM_S32_MIN, IM_S32_MAX); }
return;
case ImGuiDataType_U32:
if (op == '+') *(ImU32*)output = *(const ImU32*)arg1 + *(const ImU32*)arg2;
else if (op == '-') *(ImU32*)output = *(const ImU32*)arg1 - *(const ImU32*)arg2;
if (op == '+') { *(ImU32*)output = ImAddClampOverflow(*(const ImU32*)arg1, *(const ImU32*)arg2, IM_U32_MIN, IM_U32_MAX); }
if (op == '-') { *(ImU32*)output = ImSubClampOverflow(*(const ImU32*)arg1, *(const ImU32*)arg2, IM_U32_MIN, IM_U32_MAX); }
return;
case ImGuiDataType_S64:
if (op == '+') *(ImS64*)output = *(const ImS64*)arg1 + *(const ImS64*)arg2;
else if (op == '-') *(ImS64*)output = *(const ImS64*)arg1 - *(const ImS64*)arg2;
if (op == '+') { *(ImS64*)output = ImAddClampOverflow(*(const ImS64*)arg1, *(const ImS64*)arg2, IM_S64_MIN, IM_S64_MAX); }
if (op == '-') { *(ImS64*)output = ImSubClampOverflow(*(const ImS64*)arg1, *(const ImS64*)arg2, IM_S64_MIN, IM_S64_MAX); }
return;
case ImGuiDataType_U64:
if (op == '+') *(ImU64*)output = *(const ImU64*)arg1 + *(const ImU64*)arg2;
else if (op == '-') *(ImU64*)output = *(const ImU64*)arg1 - *(const ImU64*)arg2;
if (op == '+') { *(ImU64*)output = ImAddClampOverflow(*(const ImU64*)arg1, *(const ImU64*)arg2, IM_U64_MIN, IM_U64_MAX); }
if (op == '-') { *(ImU64*)output = ImSubClampOverflow(*(const ImU64*)arg1, *(const ImU64*)arg2, IM_U64_MIN, IM_U64_MAX); }
return;
case ImGuiDataType_Float:
if (op == '+') *(float*)output = *(const float*)arg1 + *(const float*)arg2;
else if (op == '-') *(float*)output = *(const float*)arg1 - *(const float*)arg2;
if (op == '+') { *(float*)output = *(const float*)arg1 + *(const float*)arg2; }
if (op == '-') { *(float*)output = *(const float*)arg1 - *(const float*)arg2; }
return;
case ImGuiDataType_Double:
if (op == '+') *(double*)output = *(const double*)arg1 + *(const double*)arg2;
else if (op == '-') *(double*)output = *(const double*)arg1 - *(const double*)arg2;
if (op == '+') { *(double*)output = *(const double*)arg1 + *(const double*)arg2; }
if (op == '-') { *(double*)output = *(const double*)arg1 - *(const double*)arg2; }
return;
case ImGuiDataType_COUNT: break;
}