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InputScalar, InputInt, InputFloat: added ImGuiInputTextFlags_ParseEmptyRefVal, ImGuiInputTextFlags_DisplayEmptyRefVal. (#7305)

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ocornut
2024-06-06 16:39:25 +02:00
parent 3460014e05
commit 47db0698d2
5 changed files with 49 additions and 23 deletions
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32
imgui_widgets.cpp
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@@ -2141,18 +2141,25 @@ void ImGui::DataTypeApplyOp(ImGuiDataType data_type, int op, void* output, const
// 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 and replace this dumb mess..
bool ImGui::DataTypeApplyFromText(const char* buf, ImGuiDataType data_type, void* p_data, const char* format)
bool ImGui::DataTypeApplyFromText(const char* buf, ImGuiDataType data_type, void* p_data, const char* format, void* p_data_when_empty)
{
while (ImCharIsBlankA(*buf))
buf++;
if (!buf[0])
return false;
// Copy the value in an opaque buffer so we can compare at the end of the function if it changed at all.
const ImGuiDataTypeInfo* type_info = DataTypeGetInfo(data_type);
ImGuiDataTypeStorage data_backup;
memcpy(&data_backup, p_data, type_info->Size);
while (ImCharIsBlankA(*buf))
buf++;
if (!buf[0])
{
if (p_data_when_empty != NULL)
{
memcpy(p_data, p_data_when_empty, type_info->Size);
return memcmp(&data_backup, p_data, type_info->Size) != 0;
}
return false;
}
// Sanitize format
// - For float/double we have to ignore format with precision (e.g. "%.2f") because sscanf doesn't take them in, so force them into %f and %lf
// - In theory could treat empty format as using default, but this would only cover rare/bizarre case of using InputScalar() + integer + format string without %.
@@ -3475,7 +3482,7 @@ bool ImGui::TempInputScalar(const ImRect& bb, ImGuiID id, const char* label, ImG
memcpy(&data_backup, p_data, data_type_size);
// Apply new value (or operations) then clamp
DataTypeApplyFromText(data_buf, data_type, p_data, format);
DataTypeApplyFromText(data_buf, data_type, p_data, format, NULL);
if (p_clamp_min || p_clamp_max)
{
if (p_clamp_min && p_clamp_max && DataTypeCompare(data_type, p_clamp_min, p_clamp_max) > 0)
@@ -3505,8 +3512,13 @@ bool ImGui::InputScalar(const char* label, ImGuiDataType data_type, void* p_data
if (format == NULL)
format = DataTypeGetInfo(data_type)->PrintFmt;
void* p_data_default = (g.NextItemData.Flags & ImGuiNextItemDataFlags_HasRefVal) ? &g.NextItemData.RefVal : &g.DataTypeZeroValue;
char buf[64];
DataTypeFormatString(buf, IM_ARRAYSIZE(buf), data_type, p_data, format);
if ((flags & ImGuiInputTextFlags_DisplayEmptyRefVal) && DataTypeCompare(data_type, p_data, p_data_default) == 0)
buf[0] = 0;
else
DataTypeFormatString(buf, IM_ARRAYSIZE(buf), data_type, p_data, format);
flags |= ImGuiInputTextFlags_AutoSelectAll | (ImGuiInputTextFlags)ImGuiInputTextFlags_NoMarkEdited; // We call MarkItemEdited() ourselves by comparing the actual data rather than the string.
flags |= (ImGuiInputTextFlags)ImGuiInputTextFlags_LocalizeDecimalPoint;
@@ -3515,7 +3527,7 @@ bool ImGui::InputScalar(const char* label, ImGuiDataType data_type, void* p_data
if (p_step == NULL)
{
if (InputText(label, buf, IM_ARRAYSIZE(buf), flags))
value_changed = DataTypeApplyFromText(buf, data_type, p_data, format);
value_changed = DataTypeApplyFromText(buf, data_type, p_data, format, (flags & ImGuiInputTextFlags_ParseEmptyRefVal) ? p_data_default : NULL);
}
else
{
@@ -3525,7 +3537,7 @@ bool ImGui::InputScalar(const char* label, ImGuiDataType data_type, void* p_data
PushID(label);
SetNextItemWidth(ImMax(1.0f, CalcItemWidth() - (button_size + style.ItemInnerSpacing.x) * 2));
if (InputText("", buf, IM_ARRAYSIZE(buf), flags)) // PushId(label) + "" gives us the expected ID from outside point of view
value_changed = DataTypeApplyFromText(buf, data_type, p_data, format);
value_changed = DataTypeApplyFromText(buf, data_type, p_data, format, (flags & ImGuiInputTextFlags_ParseEmptyRefVal) ? p_data_default : NULL);
IMGUI_TEST_ENGINE_ITEM_INFO(g.LastItemData.ID, label, g.LastItemData.StatusFlags | ImGuiItemStatusFlags_Inputable);
// Step buttons