Drezil/imgui
1
0
Fork 0
mirror of https://github.com/Drezil/imgui.git synced 2024-12-18 14:16:36 +00:00
Code Issues Packages Projects Releases Wiki Activity

ColorEdit: Preserve last saturation value when V=0. Disable Hue editing lock.

Browse Source 
This workaround is no longer necessary because preserving hue value prevents it from resetting when it is edited in said condition.
This commit is contained in:
Rokas Kupstys 2020-01-06 16:15:59 +02:00 committed by omar
parent 5e2329b98e
commit 32c33c6659
2 changed files with 27 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
imgui_internal.h
View File

@ -1121,6 +1121,7 @@ struct ImGuiContext
ImGuiID TempInputTextId; // Temporary text input when CTRL+clicking on a slider, etc.
ImGuiColorEditFlags ColorEditOptions; // Store user options for color edit widgets
float ColorEditLastHue; // Backup of last Hue associated to LastColor[3], so we can restore Hue in lossy RGB<>HSV round trips
float ColorEditLastSaturation; // Backup of last Saturation associated to LastColor[3], so we can restore Saturation in lossy RGB<>HSV round trips
float ColorEditLastColor[3];
ImVec4 ColorPickerRef; // Initial/reference color at the time of opening the color picker.
bool DragCurrentAccumDirty;

36
imgui_widgets.cpp
View File

@ -4222,8 +4222,13 @@ bool ImGui::ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flag
{
// Hue is lost when converting from greyscale rgb (saturation=0). Restore it.
ColorConvertRGBtoHSV(f[0], f[1], f[2], f[0], f[1], f[2]);
if (f[1] == 0 && memcmp(g.ColorEditLastColor, col, sizeof(float) * 3) == 0)
f[0] = g.ColorEditLastHue;
if (memcmp(g.ColorEditLastColor, col, sizeof(float) * 3) == 0)
{
if (f[1] == 0)
f[0] = g.ColorEditLastHue;
if (f[2] == 0)
f[1] = g.ColorEditLastSaturation;
}
}
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]) };
@ -4262,16 +4267,15 @@ bool ImGui::ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flag
SameLine(0, style.ItemInnerSpacing.x);
SetNextItemWidth((n + 1 < components) ? w_item_one : w_item_last);
// Disable Hue edit when Saturation is zero
const bool disable_hue_edit = (n == 0 && (flags & ImGuiColorEditFlags_DisplayHSV) && i[1] == 0);
// FIXME: When ImGuiColorEditFlags_HDR flag is passed HS values snap in weird ways when SV values go below 0.
if (flags & ImGuiColorEditFlags_Float)
{
value_changed |= DragFloat(ids[n], &f[n], 1.0f/255.0f, disable_hue_edit ? +FLT_MAX : 0.0f, disable_hue_edit ? -FLT_MAX : hdr ? 0.0f : 1.0f, fmt_table_float[fmt_idx][n]);
value_changed |= DragFloat(ids[n], &f[n], 1.0f/255.0f, 0.0f, hdr ? 0.0f : 1.0f, fmt_table_float[fmt_idx][n]);
value_changed_as_float |= value_changed;
}
else
{
value_changed |= DragInt(ids[n], &i[n], 1.0f, disable_hue_edit ? INT_MAX : 0, disable_hue_edit ? INT_MIN : hdr ? 0 : 255, fmt_table_int[fmt_idx][n]);
value_changed |= DragInt(ids[n], &i[n], 1.0f, 0, hdr ? 0 : 255, fmt_table_int[fmt_idx][n]);
}
if (!(flags & ImGuiColorEditFlags_NoOptions))
OpenPopupOnItemClick("context");
@ -4354,6 +4358,7 @@ bool ImGui::ColorEdit4(const char* label, float col[4], ImGuiColorEditFlags flag
if ((flags & ImGuiColorEditFlags_DisplayHSV) && (flags & ImGuiColorEditFlags_InputRGB))
{
g.ColorEditLastHue = f[0];
g.ColorEditLastSaturation = f[1];
ColorConvertHSVtoRGB(f[0], f[1], f[2], f[0], f[1], f[2]);
memcpy(g.ColorEditLastColor, f, sizeof(float) * 3);
}
@ -4536,8 +4541,13 @@ bool ImGui::ColorPicker4(const char* label, float col[4], ImGuiColorEditFlags fl
{
// Hue is lost when converting from greyscale rgb (saturation=0). Restore it.
ColorConvertRGBtoHSV(R, G, B, H, S, V);
if (S == 0 && memcmp(g.ColorEditLastColor, col, sizeof(float) * 3) == 0)
H = g.ColorEditLastHue;
if (memcmp(g.ColorEditLastColor, col, sizeof(float) * 3) == 0)
{
if (S == 0)
H = g.ColorEditLastHue;
if (V == 0)
S = g.ColorEditLastSaturation;
}
}
else if (flags & ImGuiColorEditFlags_InputHSV)
{
@ -4665,6 +4675,7 @@ bool ImGui::ColorPicker4(const char* label, float col[4], ImGuiColorEditFlags fl
{
ColorConvertHSVtoRGB(H >= 1.0f ? H - 10 * 1e-6f : H, S > 0.0f ? S : 10*1e-6f, V > 0.0f ? V : 1e-6f, col[0], col[1], col[2]);
g.ColorEditLastHue = H;
g.ColorEditLastSaturation = S;
memcpy(g.ColorEditLastColor, col, sizeof(float) * 3);
}
else if (flags & ImGuiColorEditFlags_InputHSV)
@ -4719,8 +4730,13 @@ bool ImGui::ColorPicker4(const char* label, float col[4], ImGuiColorEditFlags fl
G = col[1];
B = col[2];
ColorConvertRGBtoHSV(R, G, B, H, S, V);
if (S == 0 && memcmp(g.ColorEditLastColor, col, sizeof(float) * 3) == 0) // Fix local Hue as display below will use it immediately.
H = g.ColorEditLastHue;
if (memcmp(g.ColorEditLastColor, col, sizeof(float) * 3) == 0) // Fix local Hue as display below will use it immediately.
{
if (S == 0)
H = g.ColorEditLastHue;
if (V == 0)
S = g.ColorEditLastSaturation;
}
}
else if (flags & ImGuiColorEditFlags_InputHSV)
{