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ColorEdit4(): tweak code to be a little less ugly (still not a beauty contest winner..)

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ocornut 2015-04-03 11:49:02 +01:00
parent 2d157d3af0
commit 6aed651f77
1 changed files with 37 additions and 51 deletions
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88
imgui.cpp
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@ -6825,19 +6825,12 @@ bool ImGui::ColorEdit4(const char* label, float col[4], bool alpha)
if (edit_mode == ImGuiColorEditMode_UserSelect || edit_mode == ImGuiColorEditMode_UserSelectShowButton)
edit_mode = g.ColorEditModeStorage.GetInt(id, 0) % 3;
float fx = col[0];
float fy = col[1];
float fz = col[2];
float fw = col[3];
const ImVec4 col_display(fx, fy, fz, 1.0f);
float f[4] = { col[0], col[1], col[2], col[3] };
if (edit_mode == ImGuiColorEditMode_HSV)
ImGui::ColorConvertRGBtoHSV(fx, fy, fz, fx, fy, fz);
ImGui::ColorConvertRGBtoHSV(f[0], f[1], f[2], f[0], f[1], f[2]);
int ix = (int)(fx * 255.0f + 0.5f);
int iy = (int)(fy * 255.0f + 0.5f);
int iz = (int)(fz * 255.0f + 0.5f);
int iw = (int)(fw * 255.0f + 0.5f);
int i[4] = { (int)(f[0] * 255.0f + 0.5f), (int)(f[1] * 255.0f + 0.5f), (int)(f[2] * 255.0f + 0.5f), (int)(f[3] * 255.0f + 0.5f) };
int components = alpha ? 4 : 3;
bool value_changed = false;
@ -6845,36 +6838,35 @@ bool ImGui::ColorEdit4(const char* label, float col[4], bool alpha)
ImGui::BeginGroup();
ImGui::PushID(label);
bool hsv = (edit_mode == 1);
const bool hsv = (edit_mode == 1);
switch (edit_mode)
{
case ImGuiColorEditMode_RGB:
case ImGuiColorEditMode_HSV:
{
// 0: RGB 0..255 Sliders
// 1: HSV 0..255 Sliders
// RGB/HSV 0..255 Sliders
const float w_items_all = w_full - (square_sz + style.ItemInnerSpacing.x);
const float w_item_one = ImMax(1.0f, (float)(int)((w_items_all - (style.FramePadding.x*2.0f + style.ItemInnerSpacing.x) * (components-1)) / (float)components));
const float w_item_last = ImMax(1.0f, (float)(int)(w_items_all - (w_item_one + style.FramePadding.x*2.0f + style.ItemInnerSpacing.x) * (components-1)));
const bool hide_prefix = (w_item_one <= CalcTextSize("M:999").x);
const char* ids[4] = { "##X", "##Y", "##Z", "##W" };
const char* fmt_table[3][4] =
{
{ "%3.0f", "%3.0f", "%3.0f", "%3.0f" },
{ "R:%3.0f", "G:%3.0f", "B:%3.0f", "A:%3.0f" },
{ "H:%3.0f", "S:%3.0f", "V:%3.0f", "A:%3.0f" }
};
const char** fmt = hide_prefix ? fmt_table[0] : hsv ? fmt_table[2] : fmt_table[1];
ImGui::PushItemWidth(w_item_one);
value_changed |= ImGui::SliderInt("##X", &ix, 0, 255, hide_prefix ? "%3.0f" : hsv ? "H:%3.0f" : "R:%3.0f");
ImGui::SameLine(0, (int)style.ItemInnerSpacing.x);
value_changed |= ImGui::SliderInt("##Y", &iy, 0, 255, hide_prefix ? "%3.0f" : hsv ? "S:%3.0f" : "G:%3.0f");
ImGui::SameLine(0, (int)style.ItemInnerSpacing.x);
if (alpha)
for (int n = 0; n < components; n++)
{
value_changed |= ImGui::SliderInt("##Z", &iz, 0, 255, hide_prefix ? "%3.0f" : hsv ? "V:%3.0f" : "B:%3.0f");
ImGui::SameLine(0, (int)style.ItemInnerSpacing.x);
ImGui::PushItemWidth(w_item_last);
value_changed |= ImGui::SliderInt("##W", &iw, 0, 255, hide_prefix ? "%3.0f" : "A:%3.0f");
}
else
{
ImGui::PushItemWidth(w_item_last);
value_changed |= ImGui::SliderInt("##Z", &iz, 0, 255, hide_prefix ? "%3.0f" : hsv ? "V:%3.0f" : "B:%3.0f");
if (n > 0)
ImGui::SameLine(0, (int)style.ItemInnerSpacing.x);
if (n + 1 == components)
ImGui::PushItemWidth(w_item_last);
value_changed |= ImGui::SliderInt(ids[n], &i[n], 0, 255, fmt[n]);
}
ImGui::PopItemWidth();
ImGui::PopItemWidth();
@ -6882,46 +6874,42 @@ bool ImGui::ColorEdit4(const char* label, float col[4], bool alpha)
break;
case ImGuiColorEditMode_HEX:
{
// 2: RGB Hexadecimal
// RGB Hexadecimal Input
const float w_slider_all = w_full - square_sz;
char buf[64];
if (alpha)
ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X%02X", ix, iy, iz, iw);
ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X%02X", i[0], i[1], i[2], i[3]);
else
ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X", ix, iy, iz);
ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X", i[0], i[1], i[2]);
ImGui::PushItemWidth(w_slider_all - style.ItemInnerSpacing.x);
value_changed |= ImGui::InputText("##Text", buf, IM_ARRAYSIZE(buf), ImGuiInputTextFlags_CharsHexadecimal);
value_changed |= ImGui::InputText("##Text", buf, IM_ARRAYSIZE(buf), ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase);
ImGui::PopItemWidth();
char* p = buf;
while (*p == '#' || ImCharIsSpace(*p))
p++;
// Treat at unsigned (%X is unsigned)
ix = iy = iz = iw = 0;
i[0] = i[1] = i[2] = i[3] = 0;
if (alpha)
sscanf(p, "%02X%02X%02X%02X", (unsigned int*)&ix, (unsigned int*)&iy, (unsigned int*)&iz, (unsigned int*)&iw);
sscanf(p, "%02X%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2], (unsigned int*)&i[3]);
else
sscanf(p, "%02X%02X%02X", (unsigned int*)&ix, (unsigned int*)&iy, (unsigned int*)&iz);
sscanf(p, "%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2]);
}
break;
}
ImGui::SameLine(0, (int)style.ItemInnerSpacing.x);
const ImVec4 col_display(col[0], col[1], col[2], 1.0f);
if (ImGui::ColorButton(col_display))
{
// Don't set local copy of 'edit_mode' right away!
g.ColorEditModeStorage.SetInt(id, (edit_mode + 1) % 3);
}
g.ColorEditModeStorage.SetInt(id, (edit_mode + 1) % 3); // Don't set local copy of 'edit_mode' right away!
if (window->DC.ColorEditMode == ImGuiColorEditMode_UserSelectShowButton)
{
ImGui::SameLine(0, (int)style.ItemInnerSpacing.x);
const char* button_titles[3] = { "RGB", "HSV", "HEX" };
if (ImGui::Button(button_titles[edit_mode]))
{
// Don't set local copy of 'edit_mode' right away!
g.ColorEditModeStorage.SetInt(id, (edit_mode + 1) % 3);
}
g.ColorEditModeStorage.SetInt(id, (edit_mode + 1) % 3); // Don't set local copy of 'edit_mode' right away!
ImGui::SameLine();
}
else
@ -6932,20 +6920,18 @@ bool ImGui::ColorEdit4(const char* label, float col[4], bool alpha)
ImGui::TextUnformatted(label, FindTextDisplayEnd(label));
// Convert back
fx = ix / 255.0f;
fy = iy / 255.0f;
fz = iz / 255.0f;
fw = iw / 255.0f;
for (int n = 0; n < 4; n++)
f[n] = i[n] / 255.0f;
if (edit_mode == 1)
ImGui::ColorConvertHSVtoRGB(fx, fy, fz, fx, fy, fz);
ImGui::ColorConvertHSVtoRGB(f[0], f[1], f[2], f[0], f[1], f[2]);
if (value_changed)
{
col[0] = fx;
col[1] = fy;
col[2] = fz;
col[0] = f[0];
col[1] = f[1];
col[2] = f[2];
if (alpha)
col[3] = fw;
col[3] = f[3];
}
ImGui::PopID();