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Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011) May transition the other InputXXX function to use format strings as well.

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This commit is contained in:
omar 2018-03-22 18:58:40 +01:00
parent c796960ff9
commit c19b27813d
5 changed files with 86 additions and 34 deletions
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2
CHANGELOG.txt
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@ -126,6 +126,8 @@ Other Changes:
- Drag and Drop: Increased payload type string to 32 characters instead of 8. (#143)
- Drag and Drop: TreeNode as drop target displays rectangle over full frame. (#1597, #143)
- DragFloat: Fix/workaround for backends which do not preserve a valid mouse position when dragged out of bounds. (#1559)
- InputFloat: Allow inputing value using scientific notation e.g. "1e+10".
- InputDouble: Added InputDouble() function. We use a format string instead of a decimal_precision parameter to also for "%e" and variants. (#1011)
- Slider, Combo: Use ImGuiCol_FrameBgHovered color when hovered. (#1456) [@stfx]
- Combo: BeginCombo(): Added ImGuiComboFlags_NoArrowButton to disable the arrow button and only display the wide value preview box.
- Combo: BeginCombo(): Added ImGuiComboFlags_NoPreview to disable the preview and only display a square arrow button.

96
imgui.cpp
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@ -725,7 +725,7 @@ static ImVec2 InputTextCalcTextSizeW(const ImWchar* text_begin, const
static inline void DataTypeFormatString(ImGuiDataType data_type, void* data_ptr, const char* display_format, char* buf, int buf_size);
static inline void DataTypeFormatString(ImGuiDataType data_type, void* data_ptr, int decimal_precision, char* buf, int buf_size);
static void DataTypeApplyOp(ImGuiDataType data_type, int op, void* value1, const void* value2);
static void DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg_1, const void* arg_2);
static bool DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* scalar_format);
namespace ImGui
@ -8380,6 +8380,8 @@ static inline void DataTypeFormatString(ImGuiDataType data_type, void* data_ptr,
ImFormatString(buf, buf_size, display_format, *(int*)data_ptr);
else if (data_type == ImGuiDataType_Float)
ImFormatString(buf, buf_size, display_format, *(float*)data_ptr);
else if (data_type == ImGuiDataType_Double)
ImFormatString(buf, buf_size, display_format, *(double*)data_ptr);
}
static inline void DataTypeFormatString(ImGuiDataType data_type, void* data_ptr, int decimal_precision, char* buf, int buf_size)
@ -8398,27 +8400,45 @@ static inline void DataTypeFormatString(ImGuiDataType data_type, void* data_ptr,
else
ImFormatString(buf, buf_size, "%.*f", decimal_precision, *(float*)data_ptr);
}
else if (data_type == ImGuiDataType_Double)
{
if (decimal_precision < 0)
ImFormatString(buf, buf_size, "%f", *(double*)data_ptr);
else
ImFormatString(buf, buf_size, "%.*f", decimal_precision, *(double*)data_ptr);
}
}
static void DataTypeApplyOp(ImGuiDataType data_type, int op, void* value1, const void* value2)// Store into value1
static void DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, void* arg1, const void* arg2)
{
IM_ASSERT(op == '+' || op == '-');
if (data_type == ImGuiDataType_Int)
{
if (op == '+')
*(int*)value1 = *(int*)value1 + *(const int*)value2;
else if (op == '-')
*(int*)value1 = *(int*)value1 - *(const int*)value2;
if (op == '+') *(int*)output = *(int*)arg1 + *(const int*)arg2;
else if (op == '-') *(int*)output = *(int*)arg1 - *(const int*)arg2;
}
else if (data_type == ImGuiDataType_Float)
{
if (op == '+')
*(float*)value1 = *(float*)value1 + *(const float*)value2;
else if (op == '-')
*(float*)value1 = *(float*)value1 - *(const float*)value2;
if (op == '+') *(float*)output = *(float*)arg1 + *(const float*)arg2;
else if (op == '-') *(float*)output = *(float*)arg1 - *(const float*)arg2;
}
else if (data_type == ImGuiDataType_Double)
{
if (op == '+') *(double*)output = *(double*)arg1 + *(const double*)arg2;
else if (op == '-') *(double*)output = *(double*)arg1 - *(const double*)arg2;
}
}
static size_t GDataTypeSize[ImGuiDataType_COUNT] =
{
sizeof(int),
sizeof(float),
sizeof(double),
sizeof(float) * 2,
};
// User can input math operators (e.g. +100) to edit a numerical values.
// NB: This is _not_ a full expression evaluator. We should probably add one though..
static bool DataTypeApplyOpFromText(const char* buf, const char* initial_value_buf, ImGuiDataType data_type, void* data_ptr, const char* scalar_format)
{
while (ImCharIsSpace(*buf))
@ -8440,45 +8460,56 @@ static bool DataTypeApplyOpFromText(const char* buf, const char* initial_value_b
if (!buf[0])
return false;
IM_ASSERT(data_type < ImGuiDataType_COUNT);
int data_backup[2];
IM_ASSERT(GDataTypeSize[data_type] <= sizeof(data_backup));
memcpy(data_backup, data_ptr, GDataTypeSize[data_type]);
if (data_type == ImGuiDataType_Int)
{
if (!scalar_format)
scalar_format = "%d";
int* v = (int*)data_ptr;
const int old_v = *v;
int arg0i = *v;
if (op && sscanf(initial_value_buf, scalar_format, &arg0i) < 1)
return false;
// Store operand in a float so we can use fractional value for multipliers (*1.1), but constant always parsed as integer so we can fit big integers (e.g. 2000000003) past float precision
float arg1f = 0.0f;
if (op == '+') { if (sscanf(buf, "%f", &arg1f) == 1) *v = (int)(arg0i + arg1f); } // Add (use "+-" to subtract)
else if (op == '*') { if (sscanf(buf, "%f", &arg1f) == 1) *v = (int)(arg0i * arg1f); } // Multiply
else if (op == '/') { if (sscanf(buf, "%f", &arg1f) == 1 && arg1f != 0.0f) *v = (int)(arg0i / arg1f); }// Divide
else { if (sscanf(buf, scalar_format, &arg0i) == 1) *v = arg0i; } // Assign constant (read as integer so big values are not lossy)
return (old_v != *v);
else { if (sscanf(buf, scalar_format, &arg0i) == 1) *v = arg0i; } // Assign integer constant
}
else if (data_type == ImGuiDataType_Float)
{
// For floats we have to ignore format with precision (e.g. "%.2f") because sscanf doesn't take them in
scalar_format = "%f";
float* v = (float*)data_ptr;
const float old_v = *v;
float arg0f = *v;
float arg0f = *v, arg1f = 0.0f;
if (op && sscanf(initial_value_buf, scalar_format, &arg0f) < 1)
return false;
float arg1f = 0.0f;
if (sscanf(buf, scalar_format, &arg1f) < 1)
return false;
if (op == '+') { *v = arg0f + arg1f; } // Add (use "+-" to subtract)
else if (op == '*') { *v = arg0f * arg1f; } // Multiply
else if (op == '/') { if (arg1f != 0.0f) *v = arg0f / arg1f; } // Divide
else { *v = arg1f; } // Assign constant
return (old_v != *v);
}
else if (data_type == ImGuiDataType_Double)
{
scalar_format = "%lf";
double* v = (double*)data_ptr;
double arg0f = *v, arg1f = 0.0f;
if (op && sscanf(initial_value_buf, scalar_format, &arg0f) < 1)
return false;
if (sscanf(buf, scalar_format, &arg1f) < 1)
return false;
if (op == '+') { *v = arg0f + arg1f; } // Add (use "+-" to subtract)
else if (op == '*') { *v = arg0f * arg1f; } // Multiply
else if (op == '/') { if (arg1f != 0.0f) *v = arg0f / arg1f; } // Divide
else { *v = arg1f; } // Assign constant
}
return memcmp(data_backup, data_ptr, GDataTypeSize[data_type]) != 0;
}
// Create text input in place of a slider (when CTRL+Clicking on slider)
@ -10463,13 +10494,13 @@ bool ImGui::InputScalarEx(const char* label, ImGuiDataType data_type, void* data
SameLine(0, style.ItemInnerSpacing.x);
if (ButtonEx("-", button_sz, ImGuiButtonFlags_Repeat | ImGuiButtonFlags_DontClosePopups))
{
DataTypeApplyOp(data_type, '-', data_ptr, g.IO.KeyCtrl && step_fast_ptr ? step_fast_ptr : step_ptr);
DataTypeApplyOp(data_type, '-', data_ptr, data_ptr, g.IO.KeyCtrl && step_fast_ptr ? step_fast_ptr : step_ptr);
value_changed = true;
}
SameLine(0, style.ItemInnerSpacing.x);
if (ButtonEx("+", button_sz, ImGuiButtonFlags_Repeat | ImGuiButtonFlags_DontClosePopups))
{
DataTypeApplyOp(data_type, '+', data_ptr, g.IO.KeyCtrl && step_fast_ptr ? step_fast_ptr : step_ptr);
DataTypeApplyOp(data_type, '+', data_ptr, data_ptr, g.IO.KeyCtrl && step_fast_ptr ? step_fast_ptr : step_ptr);
value_changed = true;
}
}
@ -10488,14 +10519,25 @@ bool ImGui::InputScalarEx(const char* label, ImGuiDataType data_type, void* data
bool ImGui::InputFloat(const char* label, float* v, float step, float step_fast, int decimal_precision, ImGuiInputTextFlags extra_flags)
{
char display_format[16];
if (decimal_precision < 0)
strcpy(display_format, "%f"); // Ideally we'd have a minimum decimal precision of 1 to visually denote that this is a float, while hiding non-significant digits? %f doesn't have a minimum of 1
else
ImFormatString(display_format, IM_ARRAYSIZE(display_format), "%%.%df", decimal_precision);
extra_flags |= ImGuiInputTextFlags_CharsScientific;
if (decimal_precision < 0)
{
// Ideally we'd have a minimum decimal precision of 1 to visually denote that this is a float, while hiding non-significant digits? %f doesn't have a minimum of 1
return InputScalarEx(label, ImGuiDataType_Float, (void*)v, (void*)(step>0.0f ? &step : NULL), (void*)(step_fast>0.0f ? &step_fast : NULL), "%f", extra_flags);
}
else
{
char display_format[16];
ImFormatString(display_format, IM_ARRAYSIZE(display_format), "%%.%df", decimal_precision);
return InputScalarEx(label, ImGuiDataType_Float, (void*)v, (void*)(step>0.0f ? &step : NULL), (void*)(step_fast>0.0f ? &step_fast : NULL), display_format, extra_flags);
}
}
bool ImGui::InputDouble(const char* label, double* v, double step, double step_fast, const char* display_format, ImGuiInputTextFlags extra_flags)
{
extra_flags |= ImGuiInputTextFlags_CharsScientific;
return InputScalarEx(label, ImGuiDataType_Double, (void*)v, (void*)(step>0.0 ? &step : NULL), (void*)(step_fast>0.0 ? &step_fast : NULL), display_format, extra_flags);
}
bool ImGui::InputInt(const char* label, int* v, int step, int step_fast, ImGuiInputTextFlags extra_flags)
{

1
imgui.h
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@ -357,6 +357,7 @@ namespace ImGui
IMGUI_API bool InputInt2(const char* label, int v[2], ImGuiInputTextFlags extra_flags = 0);
IMGUI_API bool InputInt3(const char* label, int v[3], ImGuiInputTextFlags extra_flags = 0);
IMGUI_API bool InputInt4(const char* label, int v[4], ImGuiInputTextFlags extra_flags = 0);
IMGUI_API bool InputDouble(const char* label, double* v, double step = 0.0f, double step_fast = 0.0f, const char* display_format = "%.6f", ImGuiInputTextFlags extra_flags = 0);
// Widgets: Sliders (tip: ctrl+click on a slider to input with keyboard. manually input values aren't clamped, can go off-bounds)
IMGUI_API bool SliderFloat(const char* label, float* v, float v_min, float v_max, const char* display_format = "%.3f", float power = 1.0f); // adjust display_format to decorate the value with a prefix or a suffix for in-slider labels or unit display. Use power!=1.0 for logarithmic sliders

5
imgui_demo.cpp
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@ -345,6 +345,11 @@ void ImGui::ShowDemoWindow(bool* p_open)
ImGui::InputFloat("input float", &f0, 0.01f, 1.0f);
// NB: You can use the %e notation as well.
static double d0 = 999999.000001;
ImGui::InputDouble("input double", &d0, 0.01f, 1.0f, "%.6f");
ImGui::SameLine(); ShowHelpMarker("You can input value using the scientific notation,\n e.g. \"1e+8\" becomes \"100000000\".\n");
static float vec4a[4] = { 0.10f, 0.20f, 0.30f, 0.44f };
ImGui::InputFloat3("input float3", vec4a);
}

6
imgui_internal.h
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@ -248,7 +248,9 @@ enum ImGuiDataType
{
ImGuiDataType_Int,
ImGuiDataType_Float,
ImGuiDataType_Float2
ImGuiDataType_Double,
ImGuiDataType_Float2,
ImGuiDataType_COUNT
};
enum ImGuiInputSource
@ -258,7 +260,7 @@ enum ImGuiInputSource
ImGuiInputSource_Nav,
ImGuiInputSource_NavKeyboard, // Only used occasionally for storage, not tested/handled by most code
ImGuiInputSource_NavGamepad, // "
ImGuiInputSource_COUNT,
ImGuiInputSource_COUNT
};
// FIXME-NAV: Clarify/expose various repeat delay/rate