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ColorPicker: Handle out of 0..1 range colors when displaying the cross hair. (#346)

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omar 2017-07-23 18:48:45 +08:00
parent 7b2d79cffd
commit 8d32e8dae6
1 changed files with 2 additions and 2 deletions
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4
imgui.cpp
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@ -9389,9 +9389,9 @@ bool ImGui::ColorPicker4(const char* label, float col[4], ImGuiColorEditFlags fl
draw_list->AddRectFilledMultiColor(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), IM_COL32_BLACK_TRANS, IM_COL32_BLACK_TRANS, IM_COL32_BLACK, IM_COL32_BLACK);
RenderFrameBorder(picker_pos, picker_pos + ImVec2(sv_picker_size,sv_picker_size), 0.0f);
// Render cross-hair
// Render cross-hair (clamp S/V within 0..1 range because floating points colors may lead HSV values to be out of range)
const float CROSSHAIR_SIZE = 7.0f;
ImVec2 p((float)(int)(picker_pos.x + S * sv_picker_size + 0.5f), (float)(int)(picker_pos.y + (1 - V) * sv_picker_size + 0.5f));
ImVec2 p((float)(int)(picker_pos.x + ImSaturate(S) * sv_picker_size + 0.5f), (float)(int)(picker_pos.y + ImSaturate(1 - V) * sv_picker_size + 0.5f));
draw_list->AddLine(ImVec2(p.x - CROSSHAIR_SIZE, p.y), ImVec2(p.x - 2, p.y), IM_COL32_WHITE);
draw_list->AddLine(ImVec2(p.x + CROSSHAIR_SIZE, p.y), ImVec2(p.x + 2, p.y), IM_COL32_WHITE);
draw_list->AddLine(ImVec2(p.x, p.y + CROSSHAIR_SIZE), ImVec2(p.x, p.y + 2), IM_COL32_WHITE);