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SliderScalar, VSliderScalar(): Support for any data types. Tested with various ranges/limits. Note that Drag/Slider/Input currently fail if the format string doesn't preview the actual value. Will fix next. (#320, #643, #708, #1011)

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This commit is contained in:
omar 2018-05-04 20:41:21 +02:00
parent 944f414cc6
commit 3e8087458d
3 changed files with 167 additions and 131 deletions
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277
imgui.cpp
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@ -779,7 +779,9 @@ template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
static bool DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const TYPE v_min, const TYPE v_max, const char* format, float power); static bool DragBehaviorT(ImGuiDataType data_type, TYPE* v, float v_speed, const TYPE v_min, const TYPE v_max, const char* format, float power);
static bool DragBehavior(ImGuiID id, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power); static bool DragBehavior(ImGuiID id, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power);
static bool SliderBehavior(const ImRect& bb, ImGuiID id, float* v, float v_min, float v_max, const char* format, float power, ImGuiSliderFlags flags = 0); template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
static bool SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, TYPE* v, const TYPE v_min, const TYPE v_max, const char* format, float power, ImGuiSliderFlags flags);
static bool SliderBehavior(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power, ImGuiSliderFlags flags = 0);
} }
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------
@ -8742,32 +8744,34 @@ static float GetMinimumStepAtDecimalPrecision(int decimal_precision)
return (decimal_precision >= 0 && decimal_precision < 10) ? min_steps[decimal_precision] : ImPow(10.0f, (float)-decimal_precision); return (decimal_precision >= 0 && decimal_precision < 10) ? min_steps[decimal_precision] : ImPow(10.0f, (float)-decimal_precision);
} }
static inline float SliderBehaviorCalcRatioFromValue(float v, float v_min, float v_max, float power, float linear_zero_pos) template<typename TYPE, typename FLOATTYPE>
static inline float SliderBehaviorCalcRatioFromValue(ImGuiDataType data_type, TYPE v, TYPE v_min, TYPE v_max, float power, float linear_zero_pos)
{ {
if (v_min == v_max) if (v_min == v_max)
return 0.0f; return 0.0f;
const bool is_power = (power != 1.0f); const bool is_power = (power != 1.0f) && (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double);
const float v_clamped = (v_min < v_max) ? ImClamp(v, v_min, v_max) : ImClamp(v, v_max, v_min); const TYPE v_clamped = (v_min < v_max) ? ImClamp(v, v_min, v_max) : ImClamp(v, v_max, v_min);
if (is_power) if (is_power)
{ {
if (v_clamped < 0.0f) if (v_clamped < 0.0f)
{ {
const float f = 1.0f - (v_clamped - v_min) / (ImMin(0.0f,v_max) - v_min); const float f = 1.0f - (float)((v_clamped - v_min) / (ImMin((TYPE)0, v_max) - v_min));
return (1.0f - ImPow(f, 1.0f/power)) * linear_zero_pos; return (1.0f - ImPow(f, 1.0f/power)) * linear_zero_pos;
} }
else else
{ {
const float f = (v_clamped - ImMax(0.0f,v_min)) / (v_max - ImMax(0.0f,v_min)); const float f = (float)((v_clamped - ImMax((TYPE)0, v_min)) / (v_max - ImMax((TYPE)0, v_min)));
return linear_zero_pos + ImPow(f, 1.0f/power) * (1.0f - linear_zero_pos); return linear_zero_pos + ImPow(f, 1.0f/power) * (1.0f - linear_zero_pos);
} }
} }
// Linear slider // Linear slider
return (v_clamped - v_min) / (v_max - v_min); return (float)((FLOATTYPE)(v_clamped - v_min) / (FLOATTYPE)(v_max - v_min));
} }
static bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, float* v, float v_min, float v_max, const char* format, float power, ImGuiSliderFlags flags) template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
static bool ImGui::SliderBehaviorT(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, TYPE* v, const TYPE v_min, const TYPE v_max, const char* format, float power, ImGuiSliderFlags flags)
{ {
ImGuiContext& g = *GImGui; ImGuiContext& g = *GImGui;
ImGuiWindow* window = GetCurrentWindow(); ImGuiWindow* window = GetCurrentWindow();
@ -8778,29 +8782,29 @@ static bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, float* v, float
RenderNavHighlight(bb, id); RenderNavHighlight(bb, id);
RenderFrame(bb.Min, bb.Max, frame_col, true, style.FrameRounding); RenderFrame(bb.Min, bb.Max, frame_col, true, style.FrameRounding);
const bool is_power = (power != 1.0f);
const bool is_horizontal = (flags & ImGuiSliderFlags_Vertical) == 0; const bool is_horizontal = (flags & ImGuiSliderFlags_Vertical) == 0;
const bool is_decimal = ImParseFormatPrecision(format, 3) != 0; const bool is_decimal = (data_type == ImGuiDataType_Float) || (data_type == ImGuiDataType_Double);
const bool is_power = (power != 1.0f) && is_decimal;
const float grab_padding = 2.0f; const float grab_padding = 2.0f;
const float slider_sz = is_horizontal ? (bb.GetWidth() - grab_padding * 2.0f) : (bb.GetHeight() - grab_padding * 2.0f); const float slider_sz = is_horizontal ? (bb.GetWidth() - grab_padding * 2.0f) : (bb.GetHeight() - grab_padding * 2.0f);
float grab_sz; float grab_sz = style.GrabMinSize;
if (is_decimal) SIGNEDTYPE v_range = (v_min < v_max ? v_max - v_min : v_min - v_max);
grab_sz = ImMin(style.GrabMinSize, slider_sz); if (!is_decimal && v_range >= 0) // v_range < 0 may happen on integer overflows
else grab_sz = ImMax((float)(slider_sz / (v_range + 1)), style.GrabMinSize); // For integer sliders: if possible have the grab size represent 1 unit
grab_sz = ImMin(ImMax(1.0f * (slider_sz / ((v_min < v_max ? v_max - v_min : v_min - v_max) + 1.0f)), style.GrabMinSize), slider_sz); // Integer sliders, if possible have the grab size represent 1 unit grab_sz = ImMin(grab_sz, slider_sz);
const float slider_usable_sz = slider_sz - grab_sz; const float slider_usable_sz = slider_sz - grab_sz;
const float slider_usable_pos_min = (is_horizontal ? bb.Min.x : bb.Min.y) + grab_padding + grab_sz*0.5f; const float slider_usable_pos_min = (is_horizontal ? bb.Min.x : bb.Min.y) + grab_padding + grab_sz*0.5f;
const float slider_usable_pos_max = (is_horizontal ? bb.Max.x : bb.Max.y) - grab_padding - grab_sz*0.5f; const float slider_usable_pos_max = (is_horizontal ? bb.Max.x : bb.Max.y) - grab_padding - grab_sz*0.5f;
// For power curve sliders that cross over sign boundary we want the curve to be symmetric around 0.0f // For power curve sliders that cross over sign boundary we want the curve to be symmetric around 0.0f
float linear_zero_pos = 0.0f; // 0.0->1.0f float linear_zero_pos; // 0.0->1.0f
if (v_min * v_max < 0.0f) if (is_power && v_min * v_max < 0.0f)
{ {
// Different sign // Different sign
const float linear_dist_min_to_0 = ImPow(v_min >= 0.0f ? v_min : -v_min, 1.0f/power); const FLOATTYPE linear_dist_min_to_0 = ImPow(v_min >= 0 ? (FLOATTYPE)v_min : -(FLOATTYPE)v_min, (FLOATTYPE)1.0f/power);
const float linear_dist_max_to_0 = ImPow(v_max >= 0.0f ? v_max : -v_max, 1.0f/power); const FLOATTYPE linear_dist_max_to_0 = ImPow(v_max >= 0 ? (FLOATTYPE)v_max : -(FLOATTYPE)v_max, (FLOATTYPE)1.0f/power);
linear_zero_pos = linear_dist_min_to_0 / (linear_dist_min_to_0 + linear_dist_max_to_0); linear_zero_pos = (float)(linear_dist_min_to_0 / (linear_dist_min_to_0 + linear_dist_max_to_0));
} }
else else
{ {
@ -8839,7 +8843,7 @@ static bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, float* v, float
} }
else if (delta != 0.0f) else if (delta != 0.0f)
{ {
clicked_t = SliderBehaviorCalcRatioFromValue(*v, v_min, v_max, power, linear_zero_pos); clicked_t = SliderBehaviorCalcRatioFromValue<TYPE,FLOATTYPE>(data_type, *v, v_min, v_max, power, linear_zero_pos);
if (is_decimal || is_power) if (is_decimal || is_power)
{ {
delta /= 100.0f; // Gamepad/keyboard tweak speeds in % of slider bounds delta /= 100.0f; // Gamepad/keyboard tweak speeds in % of slider bounds
@ -8848,8 +8852,8 @@ static bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, float* v, float
} }
else else
{ {
if (fabsf(v_max - v_min) <= 100.0f || IsNavInputDown(ImGuiNavInput_TweakSlow)) if (v_max - v_min <= 100.0f || v_max - v_min >= -100.0f || IsNavInputDown(ImGuiNavInput_TweakSlow))
delta = ((delta < 0.0f) ? -1.0f : +1.0f) / (v_max - v_min); // Gamepad/keyboard tweak speeds in integer steps delta = ((delta < 0.0f) ? -1.0f : +1.0f) / (float)(v_max - v_min); // Gamepad/keyboard tweak speeds in integer steps
else else
delta /= 100.0f; delta /= 100.0f;
} }
@ -8865,7 +8869,7 @@ static bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, float* v, float
if (set_new_value) if (set_new_value)
{ {
float v_new; TYPE v_new;
if (is_power) if (is_power)
{ {
// Account for power curve scale on both sides of the zero // Account for power curve scale on both sides of the zero
@ -8874,7 +8878,7 @@ static bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, float* v, float
// Negative: rescale to the negative range before powering // Negative: rescale to the negative range before powering
float a = 1.0f - (clicked_t / linear_zero_pos); float a = 1.0f - (clicked_t / linear_zero_pos);
a = ImPow(a, power); a = ImPow(a, power);
v_new = ImLerp(ImMin(v_max,0.0f), v_min, a); v_new = ImLerp(ImMin(v_max, (TYPE)0), v_min, a);
} }
else else
{ {
@ -8885,19 +8889,39 @@ static bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, float* v, float
else else
a = clicked_t; a = clicked_t;
a = ImPow(a, power); a = ImPow(a, power);
v_new = ImLerp(ImMax(v_min,0.0f), v_max, a); v_new = ImLerp(ImMax(v_min, (TYPE)0), v_max, a);
} }
} }
else else
{ {
// Linear slider // Linear slider
if (is_decimal)
{
v_new = ImLerp(v_min, v_max, clicked_t); v_new = ImLerp(v_min, v_max, clicked_t);
} }
else
{
// For integer values we want the clicking position to match the grab box so we round above
// This code is carefully tuned to work with large values (e.g. high ranges of U64) while preserving this property..
FLOATTYPE v_new_off_f = (v_max - v_min) * clicked_t;
TYPE v_new_off_floor = (TYPE)(v_new_off_f);
TYPE v_new_off_round = (TYPE)(v_new_off_f + (FLOATTYPE)0.5);
if (!is_decimal && v_new_off_floor < v_new_off_round)
v_new = v_min + v_new_off_round;
else
v_new = v_min + v_new_off_floor;
}
}
// Round past decimal precision // Round to user desired precision based on format string
char buf[64]; char v_str[64];
ImFormatString(buf, IM_ARRAYSIZE(buf), ImParseFormatFindStart(format), v_new); ImFormatString(v_str, IM_ARRAYSIZE(v_str), ImParseFormatFindStart(format), v_new);
v_new = (float)atof(buf); if (data_type == ImGuiDataType_Float || data_type == ImGuiDataType_Double)
v_new = (TYPE)atof(v_str);
else
ImAtoi(v_str, (SIGNEDTYPE*)&v_new);
// Apply result
if (*v != v_new) if (*v != v_new)
{ {
*v = v_new; *v = v_new;
@ -8907,7 +8931,7 @@ static bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, float* v, float
} }
// Draw // Draw
float grab_t = SliderBehaviorCalcRatioFromValue(*v, v_min, v_max, power, linear_zero_pos); float grab_t = SliderBehaviorCalcRatioFromValue<TYPE,FLOATTYPE>(data_type, *v, v_min, v_max, power, linear_zero_pos);
if (!is_horizontal) if (!is_horizontal)
grab_t = 1.0f - grab_t; grab_t = 1.0f - grab_t;
const float grab_pos = ImLerp(slider_usable_pos_min, slider_usable_pos_max, grab_t); const float grab_pos = ImLerp(slider_usable_pos_min, slider_usable_pos_max, grab_t);
@ -8921,12 +8945,60 @@ static bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, float* v, float
return value_changed; return value_changed;
} }
// Adjust format to decorate the value with a prefix or a suffix. static bool ImGui::SliderBehavior(const ImRect& bb, ImGuiID id, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power, ImGuiSliderFlags flags)
// "%.3f" 1.234 {
// "%5.2f secs" 01.23 secs switch (data_type)
// "Gold: %.0f" Gold: 1 {
// Use power != 1.0f for non-linear sliders. case ImGuiDataType_S32:
bool ImGui::SliderFloat(const char* label, float* v, float v_min, float v_max, const char* format, float power) IM_ASSERT(*(const ImS32*)v_min >= IM_S32_MIN/2 && *(const ImS32*)v_max <= IM_S32_MAX/2);
return SliderBehaviorT<ImS32, ImS32, float >(bb, id, data_type, (ImS32*)v, *(const ImS32*)v_min, *(const ImS32*)v_max, format, power, flags);
case ImGuiDataType_U32:
IM_ASSERT(*(const ImU32*)v_min <= IM_U32_MAX/2);
return SliderBehaviorT<ImU32, ImS32, float >(bb, id, data_type, (ImU32*)v, *(const ImU32*)v_min, *(const ImU32*)v_max, format, power, flags);
case ImGuiDataType_S64:
IM_ASSERT(*(const ImS64*)v_min >= IM_S64_MIN/2 && *(const ImS64*)v_max <= IM_S64_MAX/2);
return SliderBehaviorT<ImS64, ImS64, double>(bb, id, data_type, (ImS64*)v, *(const ImS64*)v_min, *(const ImS64*)v_max, format, power, flags);
case ImGuiDataType_U64:
IM_ASSERT(*(const ImU64*)v_min <= IM_U64_MAX/2);
return SliderBehaviorT<ImU64, ImS64, double>(bb, id, data_type, (ImU64*)v, *(const ImU64*)v_min, *(const ImU64*)v_max, format, power, flags);
case ImGuiDataType_Float:
IM_ASSERT(*(const float*)v_min >= -FLT_MAX/2.0f && *(const float*)v_max <= FLT_MAX/2.0f);
return SliderBehaviorT<float, float, float >(bb, id, data_type, (float*)v, *(const float*)v_min, *(const float*)v_max, format, power, flags);
case ImGuiDataType_Double:
IM_ASSERT(*(const double*)v_min >= -DBL_MAX/2.0f && *(const double*)v_max <= DBL_MAX/2.0f);
return SliderBehaviorT<double,double,double>(bb, id, data_type, (double*)v, *(const double*)v_min, *(const double*)v_max, format, power, flags);
case ImGuiDataType_COUNT:
break;
}
IM_ASSERT(0);
return false;
}
// FIXME-LEGACY: Prior to 1.61 our DragInt() function internally used floats and because of this the compile-time default value for format was "%.0f".
// Even though we changed the compile-time default, we expect users to have carried %f around, which would break the display of DragInt() calls.
// To honor backward compatibility we are rewriting the format string, unless IMGUI_DISABLE_OBSOLETE_FUNCTIONS is enabled. What could possibly go wrong?!
static const char* PatchFormatStringFloatToInt(const char* fmt)
{
if (fmt[0] == '%' && fmt[1] == '.' && fmt[2] == '0' && fmt[3] == 'f' && fmt[4] == 0) // Fast legacy path for "%.0f" which is expected to be the most common case.
return "%d";
const char* fmt_start = ImParseFormatFindStart(fmt); // Find % (if any, and ignore %%)
const char* fmt_end = ImParseFormatFindEnd(fmt_start); // Find end of format specifier, which itself is an exercise of confidence/recklessness (because snprintf is dependent on libc or user).
if (fmt_end > fmt_start && fmt_end[-1] == 'f')
{
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
if (fmt_start == fmt && fmt_end[0] == 0)
return "%d";
ImGuiContext& g = *GImGui;
ImFormatString(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), "%.*s%%d%s", (int)(fmt_start - fmt), fmt, fmt_end); // Honor leading and trailing decorations, but lose alignment/precision.
return g.TempBuffer;
#else
IM_ASSERT(0 && "DragInt(): Invalid format string!"); // Old versions used a default parameter of "%.0f", please replace with e.g. "%d"
#endif
}
return fmt;
}
bool ImGui::SliderScalar(const char* label, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power)
{ {
ImGuiWindow* window = GetCurrentWindow(); ImGuiWindow* window = GetCurrentWindow();
if (window->SkipItems) if (window->SkipItems)
@ -8947,14 +9019,19 @@ bool ImGui::SliderFloat(const char* label, float* v, float v_min, float v_max, c
ItemSize(total_bb, style.FramePadding.y); ItemSize(total_bb, style.FramePadding.y);
return false; return false;
} }
const bool hovered = ItemHoverable(frame_bb, id);
if (!format) // Default format string when passing NULL
format = "%.3f"; // Patch old "%.0f" format string to use "%d", read function comments for more details.
IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
if (format == NULL)
format = GDataTypeInfo[data_type].PrintFmt;
else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
format = PatchFormatStringFloatToInt(format);
// Tabbing or CTRL-clicking on Slider turns it into an input box // Tabbing or CTRL-clicking on Slider turns it into an input box
bool start_text_input = false; bool start_text_input = false;
const bool tab_focus_requested = FocusableItemRegister(window, id); const bool tab_focus_requested = FocusableItemRegister(window, id);
const bool hovered = ItemHoverable(frame_bb, id);
if (tab_focus_requested || (hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || (g.NavInputId == id && g.ScalarAsInputTextId != id)) if (tab_focus_requested || (hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || (g.NavInputId == id && g.ScalarAsInputTextId != id))
{ {
SetActiveID(id, window); SetActiveID(id, window);
@ -8968,15 +9045,15 @@ bool ImGui::SliderFloat(const char* label, float* v, float v_min, float v_max, c
} }
} }
if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id)) if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id))
return InputScalarAsWidgetReplacement(frame_bb, id, label, ImGuiDataType_Float, v, format); return InputScalarAsWidgetReplacement(frame_bb, id, label, data_type, v, format);
// Actual slider behavior + render grab // Actual slider behavior + render grab
ItemSize(total_bb, style.FramePadding.y); ItemSize(total_bb, style.FramePadding.y);
const bool value_changed = SliderBehavior(frame_bb, id, v, v_min, v_max, format, power); const bool value_changed = SliderBehavior(frame_bb, id, data_type, v, v_min, v_max, format, power);
// Display value using user-provided display format so user can add prefix/suffix/decorations to the value. // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
char value_buf[64]; char value_buf[64];
const char* value_buf_end = value_buf + ImFormatString(value_buf, IM_ARRAYSIZE(value_buf), format, *v); const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
RenderTextClipped(frame_bb.Min, frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.5f)); RenderTextClipped(frame_bb.Min, frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.5f));
if (label_size.x > 0.0f) if (label_size.x > 0.0f)
@ -8985,7 +9062,12 @@ bool ImGui::SliderFloat(const char* label, float* v, float v_min, float v_max, c
return value_changed; return value_changed;
} }
bool ImGui::VSliderFloat(const char* label, const ImVec2& size, float* v, float v_min, float v_max, const char* format, float power) bool ImGui::SliderFloat(const char* label, float* v, float v_min, float v_max, const char* format, float power)
{
return SliderScalar(label, ImGuiDataType_Float, v, &v_min, &v_max, format, power);
}
bool ImGui::VSliderScalar(const char* label, const ImVec2& size, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format, float power)
{ {
ImGuiWindow* window = GetCurrentWindow(); ImGuiWindow* window = GetCurrentWindow();
if (window->SkipItems) if (window->SkipItems)
@ -9002,11 +9084,16 @@ bool ImGui::VSliderFloat(const char* label, const ImVec2& size, float* v, float
ItemSize(bb, style.FramePadding.y); ItemSize(bb, style.FramePadding.y);
if (!ItemAdd(frame_bb, id)) if (!ItemAdd(frame_bb, id))
return false; return false;
// Default format string when passing NULL
// Patch old "%.0f" format string to use "%d", read function comments for more details.
IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
if (format == NULL)
format = GDataTypeInfo[data_type].PrintFmt;
else if (data_type == ImGuiDataType_S32 && strcmp(format, "%d") != 0)
format = PatchFormatStringFloatToInt(format);
const bool hovered = ItemHoverable(frame_bb, id); const bool hovered = ItemHoverable(frame_bb, id);
if (!format)
format = "%.3f";
if ((hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || g.NavInputId == id) if ((hovered && g.IO.MouseClicked[0]) || g.NavActivateId == id || g.NavInputId == id)
{ {
SetActiveID(id, window); SetActiveID(id, window);
@ -9016,12 +9103,12 @@ bool ImGui::VSliderFloat(const char* label, const ImVec2& size, float* v, float
} }
// Actual slider behavior + render grab // Actual slider behavior + render grab
bool value_changed = SliderBehavior(frame_bb, id, v, v_min, v_max, format, power, ImGuiSliderFlags_Vertical); bool value_changed = SliderBehavior(frame_bb, id, data_type, v, v_min, v_max, format, power, ImGuiSliderFlags_Vertical);
// Display value using user-provided display format so user can add prefix/suffix/decorations to the value. // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
// For the vertical slider we allow centered text to overlap the frame padding // For the vertical slider we allow centered text to overlap the frame padding
char value_buf[64]; char value_buf[64];
char* value_buf_end = value_buf + ImFormatString(value_buf, IM_ARRAYSIZE(value_buf), format, *v); const char* value_buf_end = value_buf + DataTypeFormatString(value_buf, IM_ARRAYSIZE(value_buf), data_type, v, format);
RenderTextClipped(ImVec2(frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y), frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.0f)); RenderTextClipped(ImVec2(frame_bb.Min.x, frame_bb.Min.y + style.FramePadding.y), frame_bb.Max, value_buf, value_buf_end, NULL, ImVec2(0.5f,0.0f));
if (label_size.x > 0.0f) if (label_size.x > 0.0f)
RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label); RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label);
@ -9039,26 +9126,21 @@ bool ImGui::SliderAngle(const char* label, float* v_rad, float v_degrees_min, fl
bool ImGui::SliderInt(const char* label, int* v, int v_min, int v_max, const char* format) bool ImGui::SliderInt(const char* label, int* v, int v_min, int v_max, const char* format)
{ {
if (!format) return SliderScalar(label, ImGuiDataType_S32, v, &v_min, &v_max, format);
format = "%.0f"; }
float v_f = (float)*v;
bool value_changed = SliderFloat(label, &v_f, (float)v_min, (float)v_max, format, 1.0f); bool ImGui::VSliderFloat(const char* label, const ImVec2& size, float* v, float v_min, float v_max, const char* format, float power)
*v = (int)v_f; {
return value_changed; return VSliderScalar(label, size, ImGuiDataType_Float, v, &v_min, &v_max, format, power);
} }
bool ImGui::VSliderInt(const char* label, const ImVec2& size, int* v, int v_min, int v_max, const char* format) bool ImGui::VSliderInt(const char* label, const ImVec2& size, int* v, int v_min, int v_max, const char* format)
{ {
if (!format) return VSliderScalar(label, size, ImGuiDataType_S32, v, &v_min, &v_max, format);
format = "%.0f";
float v_f = (float)*v;
bool value_changed = VSliderFloat(label, size, &v_f, (float)v_min, (float)v_max, format, 1.0f);
*v = (int)v_f;
return value_changed;
} }
// Add multiple sliders on 1 line for compact edition of multiple components // Add multiple sliders on 1 line for compact edition of multiple components
bool ImGui::SliderFloatN(const char* label, float* v, int components, float v_min, float v_max, const char* format, float power) bool ImGui::SliderScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* v_min, const void* v_max, const char* format, float power)
{ {
ImGuiWindow* window = GetCurrentWindow(); ImGuiWindow* window = GetCurrentWindow();
if (window->SkipItems) if (window->SkipItems)
@ -9069,77 +9151,51 @@ bool ImGui::SliderFloatN(const char* label, float* v, int components, float v_mi
BeginGroup(); BeginGroup();
PushID(label); PushID(label);
PushMultiItemsWidths(components); PushMultiItemsWidths(components);
size_t type_size = GDataTypeInfo[data_type].Size;
for (int i = 0; i < components; i++) for (int i = 0; i < components; i++)
{ {
PushID(i); PushID(i);
value_changed |= SliderFloat("##v", &v[i], v_min, v_max, format, power); value_changed |= SliderScalar("##v", data_type, v, v_min, v_max, format, power);
SameLine(0, g.Style.ItemInnerSpacing.x); SameLine(0, g.Style.ItemInnerSpacing.x);
PopID(); PopID();
PopItemWidth(); PopItemWidth();
v = (void*)((char*)v + type_size);
} }
PopID(); PopID();
TextUnformatted(label, FindRenderedTextEnd(label)); TextUnformatted(label, FindRenderedTextEnd(label));
EndGroup(); EndGroup();
return value_changed; return value_changed;
} }
bool ImGui::SliderFloat2(const char* label, float v[2], float v_min, float v_max, const char* format, float power) bool ImGui::SliderFloat2(const char* label, float v[2], float v_min, float v_max, const char* format, float power)
{ {
return SliderFloatN(label, v, 2, v_min, v_max, format, power); return SliderScalarN(label, ImGuiDataType_Float, v, 2, &v_min, &v_max, format, power);
} }
bool ImGui::SliderFloat3(const char* label, float v[3], float v_min, float v_max, const char* format, float power) bool ImGui::SliderFloat3(const char* label, float v[3], float v_min, float v_max, const char* format, float power)
{ {
return SliderFloatN(label, v, 3, v_min, v_max, format, power); return SliderScalarN(label, ImGuiDataType_Float, v, 3, &v_min, &v_max, format, power);
} }
bool ImGui::SliderFloat4(const char* label, float v[4], float v_min, float v_max, const char* format, float power) bool ImGui::SliderFloat4(const char* label, float v[4], float v_min, float v_max, const char* format, float power)
{ {
return SliderFloatN(label, v, 4, v_min, v_max, format, power); return SliderScalarN(label, ImGuiDataType_Float, v, 4, &v_min, &v_max, format, power);
}
bool ImGui::SliderIntN(const char* label, int* v, int components, int v_min, int v_max, const char* format)
{
ImGuiWindow* window = GetCurrentWindow();
if (window->SkipItems)
return false;
ImGuiContext& g = *GImGui;
bool value_changed = false;
BeginGroup();
PushID(label);
PushMultiItemsWidths(components);
for (int i = 0; i < components; i++)
{
PushID(i);
value_changed |= SliderInt("##v", &v[i], v_min, v_max, format);
SameLine(0, g.Style.ItemInnerSpacing.x);
PopID();
PopItemWidth();
}
PopID();
TextUnformatted(label, FindRenderedTextEnd(label));
EndGroup();
return value_changed;
} }
bool ImGui::SliderInt2(const char* label, int v[2], int v_min, int v_max, const char* format) bool ImGui::SliderInt2(const char* label, int v[2], int v_min, int v_max, const char* format)
{ {
return SliderIntN(label, v, 2, v_min, v_max, format); return SliderScalarN(label, ImGuiDataType_S32, v, 2, &v_min, &v_max, format);
} }
bool ImGui::SliderInt3(const char* label, int v[3], int v_min, int v_max, const char* format) bool ImGui::SliderInt3(const char* label, int v[3], int v_min, int v_max, const char* format)
{ {
return SliderIntN(label, v, 3, v_min, v_max, format); return SliderScalarN(label, ImGuiDataType_S32, v, 3, &v_min, &v_max, format);
} }
bool ImGui::SliderInt4(const char* label, int v[4], int v_min, int v_max, const char* format) bool ImGui::SliderInt4(const char* label, int v[4], int v_min, int v_max, const char* format)
{ {
return SliderIntN(label, v, 4, v_min, v_max, format); return SliderScalarN(label, ImGuiDataType_S32, v, 4, &v_min, &v_max, format);
} }
template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE> template<typename TYPE, typename SIGNEDTYPE, typename FLOATTYPE>
@ -9272,30 +9328,6 @@ bool ImGui::DragBehavior(ImGuiID id, ImGuiDataType data_type, void* v, float v_s
return false; return false;
} }
// FIXME-LEGACY: Prior to 1.61 our DragInt() function internally used floats and because of this the compile-time default value for format was "%.0f".
// Even though we changed the compile-time default, we expect users to have carried %f around, which would break the display of DragInt() calls.
// To honor backward compatibility we are rewriting the format string, unless IMGUI_DISABLE_OBSOLETE_FUNCTIONS is enabled. What could possibly go wrong?!
static const char* PatchFormatStringFloatToInt(const char* fmt)
{
if (fmt[0] == '%' && fmt[1] == '.' && fmt[2] == '0' && fmt[3] == 'f' && fmt[4] == 0) // Fast legacy path for "%.0f" which is expected to be the most common case.
return "%d";
const char* fmt_start = ImParseFormatFindStart(fmt); // Find % (if any, and ignore %%)
const char* fmt_end = ImParseFormatFindEnd(fmt_start); // Find end of format specifier, which itself is an exercise of confidence/recklessness (because snprintf is dependent on libc or user).
if (fmt_end > fmt_start && fmt_end[-1] == 'f')
{
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
if (fmt_start == fmt && fmt_end[0] == 0)
return "%d";
ImGuiContext& g = *GImGui;
ImFormatString(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), "%.*s%%d%s", (int)(fmt_start - fmt), fmt, fmt_end); // Honor leading and trailing decorations, but lose alignment/precision.
return g.TempBuffer;
#else
IM_ASSERT(0 && "DragInt(): Invalid format string!"); // Old versions used a default parameter of "%.0f", please replace with e.g. "%d"
#endif
}
return fmt;
}
bool ImGui::DragScalar(const char* label, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power) bool ImGui::DragScalar(const char* label, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format, float power)
{ {
ImGuiWindow* window = GetCurrentWindow(); ImGuiWindow* window = GetCurrentWindow();
@ -9394,7 +9426,6 @@ bool ImGui::DragScalarN(const char* label, ImGuiDataType data_type, void* v, int
TextUnformatted(label, FindRenderedTextEnd(label)); TextUnformatted(label, FindRenderedTextEnd(label));
EndGroup(); EndGroup();
return value_changed; return value_changed;
} }

12
imgui.h
View File

@ -341,6 +341,7 @@ namespace ImGui
// Widgets: Drags (tip: ctrl+click on a drag box to input with keyboard. manually input values aren't clamped, can go off-bounds) // Widgets: Drags (tip: ctrl+click on a drag box to input with keyboard. manually input values aren't clamped, can go off-bounds)
// For all the Float2/Float3/Float4/Int2/Int3/Int4 versions of every functions, note that a 'float v[X]' function argument is the same as 'float* v', the array syntax is just a way to document the number of elements that are expected to be accessible. You can pass address of your first element out of a contiguous set, e.g. &myvector.x // For all the Float2/Float3/Float4/Int2/Int3/Int4 versions of every functions, note that a 'float v[X]' function argument is the same as 'float* v', the array syntax is just a way to document the number of elements that are expected to be accessible. You can pass address of your first element out of a contiguous set, e.g. &myvector.x
// Adjust format string to decorate the value with a prefix, a suffix, or adapt the editing and display precision e.g. "%.3f" -> 1.234; "%5.2f secs" -> 01.23 secs; "Biscuit: %.0f" -> Biscuit: 1; etc.
// Speed are per-pixel of mouse movement (v_speed=0.2f: mouse needs to move by 5 pixels to increase value by 1). For gamepad/keyboard navigation, minimum speed is Max(v_speed, minimum_step_at_given_precision). // Speed are per-pixel of mouse movement (v_speed=0.2f: mouse needs to move by 5 pixels to increase value by 1). For gamepad/keyboard navigation, minimum speed is Max(v_speed, minimum_step_at_given_precision).
IMGUI_API bool DragFloat(const char* label, float* v, float v_speed = 1.0f, float v_min = 0.0f, float v_max = 0.0f, const char* format = "%.3f", float power = 1.0f); // If v_min >= v_max we have no bound IMGUI_API bool DragFloat(const char* label, float* v, float v_speed = 1.0f, float v_min = 0.0f, float v_max = 0.0f, const char* format = "%.3f", float power = 1.0f); // If v_min >= v_max we have no bound
IMGUI_API bool DragFloat2(const char* label, float v[2], float v_speed = 1.0f, float v_min = 0.0f, float v_max = 0.0f, const char* format = "%.3f", float power = 1.0f); IMGUI_API bool DragFloat2(const char* label, float v[2], float v_speed = 1.0f, float v_min = 0.0f, float v_max = 0.0f, const char* format = "%.3f", float power = 1.0f);
@ -367,17 +368,18 @@ namespace ImGui
IMGUI_API bool InputDouble(const char* label, double* v, double step = 0.0f, double step_fast = 0.0f, const char* format = "%.6f", ImGuiInputTextFlags extra_flags = 0); IMGUI_API bool InputDouble(const char* label, double* v, double step = 0.0f, double step_fast = 0.0f, const char* 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) // Widgets: Sliders (tip: ctrl+click on a slider to input with keyboard. manually input values aren't clamped, can go off-bounds)
// Adjust format string to decorate the value with a prefix, a suffix, or adapt the editing and display precision e.g. "%.3f" -> 1.234; "%5.2f secs" -> 01.23 secs; "Biscuit: %.0f" -> Biscuit: 1; etc.
IMGUI_API bool SliderFloat(const char* label, float* v, float v_min, float v_max, const char* format = "%.3f", float power = 1.0f); // adjust format to decorate the value with a prefix or a suffix for in-slider labels or unit display. Use power!=1.0 for power curve sliders IMGUI_API bool SliderFloat(const char* label, float* v, float v_min, float v_max, const char* format = "%.3f", float power = 1.0f); // adjust format to decorate the value with a prefix or a suffix for in-slider labels or unit display. Use power!=1.0 for power curve sliders
IMGUI_API bool SliderFloat2(const char* label, float v[2], float v_min, float v_max, const char* format = "%.3f", float power = 1.0f); IMGUI_API bool SliderFloat2(const char* label, float v[2], float v_min, float v_max, const char* format = "%.3f", float power = 1.0f);
IMGUI_API bool SliderFloat3(const char* label, float v[3], float v_min, float v_max, const char* format = "%.3f", float power = 1.0f); IMGUI_API bool SliderFloat3(const char* label, float v[3], float v_min, float v_max, const char* format = "%.3f", float power = 1.0f);
IMGUI_API bool SliderFloat4(const char* label, float v[4], float v_min, float v_max, const char* format = "%.3f", float power = 1.0f); IMGUI_API bool SliderFloat4(const char* label, float v[4], float v_min, float v_max, const char* format = "%.3f", float power = 1.0f);
IMGUI_API bool SliderAngle(const char* label, float* v_rad, float v_degrees_min = -360.0f, float v_degrees_max = +360.0f); IMGUI_API bool SliderAngle(const char* label, float* v_rad, float v_degrees_min = -360.0f, float v_degrees_max = +360.0f);
IMGUI_API bool SliderInt(const char* label, int* v, int v_min, int v_max, const char* format = "%.0f"); IMGUI_API bool SliderInt(const char* label, int* v, int v_min, int v_max, const char* format = "%d");
IMGUI_API bool SliderInt2(const char* label, int v[2], int v_min, int v_max, const char* format = "%.0f"); IMGUI_API bool SliderInt2(const char* label, int v[2], int v_min, int v_max, const char* format = "%d");
IMGUI_API bool SliderInt3(const char* label, int v[3], int v_min, int v_max, const char* format = "%.0f"); IMGUI_API bool SliderInt3(const char* label, int v[3], int v_min, int v_max, const char* format = "%d");
IMGUI_API bool SliderInt4(const char* label, int v[4], int v_min, int v_max, const char* format = "%.0f"); IMGUI_API bool SliderInt4(const char* label, int v[4], int v_min, int v_max, const char* format = "%d");
IMGUI_API bool VSliderFloat(const char* label, const ImVec2& size, float* v, float v_min, float v_max, const char* format = "%.3f", float power = 1.0f); IMGUI_API bool VSliderFloat(const char* label, const ImVec2& size, float* v, float v_min, float v_max, const char* format = "%.3f", float power = 1.0f);
IMGUI_API bool VSliderInt(const char* label, const ImVec2& size, int* v, int v_min, int v_max, const char* format = "%.0f"); IMGUI_API bool VSliderInt(const char* label, const ImVec2& size, int* v, int v_min, int v_max, const char* format = "%d");
// Widgets: Color Editor/Picker (tip: the ColorEdit* functions have a little colored preview square that can be left-clicked to open a picker, and right-clicked to open an option menu.) // Widgets: Color Editor/Picker (tip: the ColorEdit* functions have a little colored preview square that can be left-clicked to open a picker, and right-clicked to open an option menu.)
// Note that a 'float v[X]' function argument is the same as 'float* v', the array syntax is just a way to document the number of elements that are expected to be accessible. You can the pass the address of a first float element out of a contiguous structure, e.g. &myvector.x // Note that a 'float v[X]' function argument is the same as 'float* v', the array syntax is just a way to document the number of elements that are expected to be accessible. You can the pass the address of a first float element out of a contiguous structure, e.g. &myvector.x

7
imgui_internal.h
View File

@ -169,6 +169,8 @@ static inline float ImLinearSweep(float current, float target, float speed)
static inline ImVec2 ImMul(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(lhs.x * rhs.x, lhs.y * rhs.y); } static inline ImVec2 ImMul(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(lhs.x * rhs.x, lhs.y * rhs.y); }
static inline float ImPow(float x, float y) { return powf(x, y); } static inline float ImPow(float x, float y) { return powf(x, y); }
static inline double ImPow(double x, double y) { return pow(x, y); } static inline double ImPow(double x, double y) { return pow(x, y); }
static inline float ImFmod(float x, float y) { return fmodf(x, y); }
static inline double ImFmod(double x, double y) { return fmod(x, y); }
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------
// Types // Types
@ -1100,8 +1102,9 @@ namespace ImGui
IMGUI_API bool ButtonEx(const char* label, const ImVec2& size_arg = ImVec2(0,0), ImGuiButtonFlags flags = 0); IMGUI_API bool ButtonEx(const char* label, const ImVec2& size_arg = ImVec2(0,0), ImGuiButtonFlags flags = 0);
IMGUI_API bool CloseButton(ImGuiID id, const ImVec2& pos, float radius); IMGUI_API bool CloseButton(ImGuiID id, const ImVec2& pos, float radius);
IMGUI_API bool SliderFloatN(const char* label, float* v, int components, float v_min, float v_max, const char* format, float power); IMGUI_API bool SliderScalar(const char* label, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format = NULL, float power = 1.0f);
IMGUI_API bool SliderIntN(const char* label, int* v, int components, int v_min, int v_max, const char* format); IMGUI_API bool SliderScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* v_min, const void* v_max, const char* format = NULL, float power = 1.0f);
IMGUI_API bool VSliderScalar(const char* label, const ImVec2& size, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format = NULL, float power = 1.0f);
IMGUI_API bool DragScalar(const char* label, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format = NULL, float power = 1.0f); IMGUI_API bool DragScalar(const char* label, ImGuiDataType data_type, void* v, float v_speed, const void* v_min, const void* v_max, const char* format = NULL, float power = 1.0f);
IMGUI_API bool DragScalarN(const char* label, ImGuiDataType data_type, void* v, int components, float v_speed, const void* v_min, const void* v_max, const char* format = NULL, float power = 1.0f); IMGUI_API bool DragScalarN(const char* label, ImGuiDataType data_type, void* v, int components, float v_speed, const void* v_min, const void* v_max, const char* format = NULL, float power = 1.0f);