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ColorEdit: Added ImGuiColorEditFlags_Float flag to display and edit drag values in 0.0..1.0 range instead of 0..255. (#346)

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This commit is contained in:
omar 2017-07-23 18:44:32 +08:00
parent 4def2ce339
commit 7b2d79cffd
3 changed files with 25 additions and 8 deletions
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29
imgui.cpp
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@ -9097,6 +9097,7 @@ bool ImGui::ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flag
int i[4] = { IM_F32_TO_INT8_UNBOUND(f[0]), IM_F32_TO_INT8_UNBOUND(f[1]), IM_F32_TO_INT8_UNBOUND(f[2]), IM_F32_TO_INT8_UNBOUND(f[3]) };
bool value_changed = false;
bool value_changed_as_float = false;
BeginGroup();
PushID(label);
@ -9107,15 +9108,21 @@ bool ImGui::ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flag
const float w_item_one = ImMax(1.0f, (float)(int)((w_items_all - (style.ItemInnerSpacing.x) * (components-1)) / (float)components));
const float w_item_last = ImMax(1.0f, (float)(int)(w_items_all - (w_item_one + style.ItemInnerSpacing.x) * (components-1)));
const bool hide_prefix = (w_item_one <= CalcTextSize("M:999").x);
const bool hide_prefix = (w_item_one <= CalcTextSize((flags & ImGuiColorEditFlags_Float) ? "M:1.000" : "M:999").x);
const char* ids[4] = { "##X", "##Y", "##Z", "##W" };
const char* fmt_table[3][4] =
const char* fmt_table_int[3][4] =
{
{ "%3.0f", "%3.0f", "%3.0f", "%3.0f" }, // Short display
{ "R:%3.0f", "G:%3.0f", "B:%3.0f", "A:%3.0f" }, // Long display for RGBA
{ "H:%3.0f", "S:%3.0f", "V:%3.0f", "A:%3.0f" } // Long display for HSVV
{ "H:%3.0f", "S:%3.0f", "V:%3.0f", "A:%3.0f" } // Long display for HSVA
};
const char** fmt = hide_prefix ? fmt_table[0] : (flags & ImGuiColorEditFlags_HSV) ? fmt_table[2] : fmt_table[1];
const char* fmt_table_float[3][4] =
{
{ "%0.3f", "%0.3f", "%0.3f", "%0.3f" }, // Short display
{ "R:%0.3f", "G:%0.3f", "B:%0.3f", "A:%0.3f" }, // Long display for RGBA
{ "H:%0.3f", "S:%0.3f", "V:%0.3f", "A:%0.3f" } // Long display for HSVA
};
const int fmt_idx = hide_prefix ? 0 : (flags & ImGuiColorEditFlags_HSV) ? 2 : 1;
PushItemWidth(w_item_one);
for (int n = 0; n < components; n++)
@ -9124,7 +9131,10 @@ bool ImGui::ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flag
SameLine(0, style.ItemInnerSpacing.x);
if (n + 1 == components)
PushItemWidth(w_item_last);
value_changed |= DragInt(ids[n], &i[n], 1.0f, 0, 255, fmt[n]);
if (flags & ImGuiColorEditFlags_Float)
value_changed |= value_changed_as_float |= DragFloat(ids[n], &f[n], 1.0f/255.0f, 0.0f, 1.0f, fmt_table_float[fmt_idx][n]);
else
value_changed |= DragInt(ids[n], &i[n], 1.0f, 0, 255, fmt_table_int[fmt_idx][n]);
}
PopItemWidth();
PopItemWidth();
@ -9183,8 +9193,10 @@ bool ImGui::ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flag
TextUnformatted(label, label_display_end);
Separator();
}
PushItemWidth(ColorSquareSize() * 12.0f);
value_changed |= ColorPicker4("##picker", col, (flags & ImGuiColorEditFlags_NoAlpha) | (ImGuiColorEditFlags_RGB | ImGuiColorEditFlags_HSV | ImGuiColorEditFlags_HEX));
float square_sz = ColorSquareSize();
ImGuiColorEditFlags picker_flags = (flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_Float)) | (ImGuiColorEditFlags_RGB | ImGuiColorEditFlags_HSV | ImGuiColorEditFlags_HEX) | ImGuiColorEditFlags_NoLabel;
PushItemWidth(square_sz * 12.0f);
value_changed |= ColorPicker4("##picker", col, picker_flags);
PopItemWidth();
EndPopup();
}
@ -9211,6 +9223,7 @@ bool ImGui::ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flag
// Convert back
if (!picker_active)
{
if (!value_changed_as_float)
for (int n = 0; n < 4; n++)
f[n] = i[n] / 255.0f;
if (flags & ImGuiColorEditFlags_HSV)
@ -9320,7 +9333,7 @@ bool ImGui::ColorPicker4(const char* label, float col[4], ImGuiColorEditFlags fl
if ((flags & ImGuiColorEditFlags_ModeMask_) == 0)
flags |= ImGuiColorEditFlags_RGB | ImGuiColorEditFlags_HSV | ImGuiColorEditFlags_HEX;
PushItemWidth((alpha_bar ? bar1_pos_x : bar0_pos_x) + bars_width - picker_pos.x);
ImGuiColorEditFlags sub_flags = (flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoColorSquare)) | ImGuiColorEditFlags_NoPicker | ImGuiColorEditFlags_NoOptions | ImGuiColorEditFlags_NoTooltip;
ImGuiColorEditFlags sub_flags = (flags & (ImGuiColorEditFlags_Float | ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoColorSquare)) | ImGuiColorEditFlags_NoPicker | ImGuiColorEditFlags_NoOptions | ImGuiColorEditFlags_NoTooltip;
if (flags & ImGuiColorEditFlags_RGB)
value_changed |= ColorEdit4("##rgb", col, sub_flags | ImGuiColorEditFlags_RGB);
if (flags & ImGuiColorEditFlags_HSV)

1
imgui.h
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@ -674,6 +674,7 @@ enum ImGuiColorEditFlags_
ImGuiColorEditFlags_NoTooltip = 1 << 8, // ColorEdit, ColorButton: Disable tooltip when hovering the colored square.
ImGuiColorEditFlags_NoLabel = 1 << 9, // ColorEdit: Disable display of inline text label (however the label is still used in tooltip and picker)
ImGuiColorEditFlags_AlphaBar = 1 << 10, // ColorPicker: Show vertical alpha bar/gradient
ImGuiColorEditFlags_Float = 1 << 11, // ColorEdit, ColorPicker: display values formatted as 0.0f..1.0f floats instead of 0..255 integers
ImGuiColorEditFlags_ModeMask_ = ImGuiColorEditFlags_RGB|ImGuiColorEditFlags_HSV|ImGuiColorEditFlags_HEX
};

3
imgui_demo.cpp
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@ -669,6 +669,9 @@ void ImGui::ShowTestWindow(bool* p_open)
ImGui::Text("Color widget with Alpha:");
ImGui::ColorEdit4("MyColor##2", (float*)&color);
ImGui::Text("Color widget with Float Display:");
ImGui::ColorEdit4("MyColor##2f", (float*)&color, ImGuiColorEditFlags_Float);
ImGui::Text("Color button only:");
ImGui::SameLine(); ShowHelpMarker("With the ImGuiColorEditFlags_NoInputs flag you can hide all the slider/text inputs.\nWith the ImGuiColorEditFlags_NoLabel flag you can pass a non-empty label which will only be used for the tooltip and picker popup.");
ImGui::ColorEdit4("MyColor##3", (float*)&color, ImGuiColorEditFlags_NoInputs|ImGuiColorEditFlags_NoLabel);