48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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#include "UiFont.hpp"
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#include <Base/Logger.hpp>
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#include "Host/FontResolver.hpp"
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#include <map>
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#include <imgui.h>
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namespace OpenVulkano::Scene::UI
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{
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void UiFont::SetActive()
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{
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if (!m_font) MakeFont();
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if (m_font) ImGui::PushFont(m_font);
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}
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void UiFont::MakeFont()
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{
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if (m_pixelSize <= 0 || m_font) return;
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auto fontData = FontResolver::GetFontData(m_name);
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if (!fontData)
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{
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Logger::APP->warn("Failed to find font {}", m_name);
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m_pixelSize = 0;
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return;
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}
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ImFontConfig conf;
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strlcpy(conf.Name, m_name.data(), std::min(m_name.size(), sizeof(conf.Name)));
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conf.FontDataOwnedByAtlas = false;
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conf.RasterizerDensity = 3; // TODO check window scale factor
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ImGuiIO& io = ImGui::GetIO();
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m_font = io.Fonts->AddFontFromMemoryTTF(fontData.Data(), static_cast<int>(fontData.Size()), m_pixelSize, &conf);
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}
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UiFont* UiFont::GetFont(const std::string& fontName, int pixelSize)
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{
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static std::map<std::pair<std::string, int>, UiFont> FONTS;
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UiFont& font = FONTS[{fontName, pixelSize}];
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if (font.m_pixelSize != pixelSize) font = UiFont(fontName, (float)pixelSize);
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font.MakeFont();
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return &font;
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}
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}
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