75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
#include "toast.hpp"
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#include <format>
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#include "log.hpp"
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#include <imgui/imgui.h>
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#include "types.hpp"
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using namespace anm2ed::types;
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namespace anm2ed::imgui
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{
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constexpr auto LIFETIME = 4.0f;
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constexpr auto FADE_THRESHOLD = 1.0f;
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Toast::Toast(const std::string& message)
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{
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this->message = message;
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lifetime = LIFETIME;
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}
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void Toasts::update()
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{
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ImGuiIO& io = ImGui::GetIO();
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auto borderColor = ImGui::GetStyleColorVec4(ImGuiCol_Border);
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auto textColor = ImGui::GetStyleColorVec4(ImGuiCol_Text);
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auto position = to_vec2(io.DisplaySize) - to_vec2(ImGui::GetStyle().ItemSpacing);
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for (int i = (int)toasts.size() - 1; i >= 0; --i)
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{
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Toast& toast = toasts[i];
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if (toast.lifetime <= 0.0f)
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{
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toasts.erase(toasts.begin() + i);
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i--;
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continue;
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}
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toast.lifetime -= ImGui::GetIO().DeltaTime;
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auto alpha = toast.lifetime <= FADE_THRESHOLD ? toast.lifetime / FADE_THRESHOLD : 1.0f;
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borderColor.w = alpha;
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textColor.w = alpha;
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ImGui::SetNextWindowPos(to_imvec2(position), ImGuiCond_None, {1.0f, 1.0f});
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ImGui::SetNextWindowSize(ImVec2(0, ImGui::GetTextLineHeightWithSpacing() + ImGui::GetStyle().WindowPadding.y));
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ImGui::PushStyleColor(ImGuiCol_Text, textColor);
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ImGui::PushStyleColor(ImGuiCol_Border, borderColor);
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ImGui::SetNextWindowBgAlpha(alpha);
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if (ImGui::Begin(std::format("##Toast #{}", i).c_str(), nullptr,
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ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove |
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ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoScrollWithMouse |
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ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_AlwaysAutoResize |
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ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoNav))
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{
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ImGui::TextUnformatted(toast.message.c_str());
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position.y -= ImGui::GetWindowSize().y + ImGui::GetStyle().ItemSpacing.y;
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if (ImGui::IsWindowHovered() && ImGui::IsMouseClicked(ImGuiMouseButton_Left)) toast.lifetime = 0.0f;
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}
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ImGui::End();
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ImGui::PopStyleColor(2);
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}
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}
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void Toasts::push(const std::string& message) { toasts.emplace_back(Toast(message)); }
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}
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anm2ed::imgui::Toasts toasts;
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