Use dynamically sized ImGui fonts

This commit is contained in:
Dan Paulat 2025-08-27 23:43:11 -05:00
parent dc96e3e3ad
commit c82b9753c6
12 changed files with 89 additions and 88 deletions

View file

@ -1,6 +1,5 @@
#include <scwx/qt/gl/draw/placefile_text.hpp>
#include <scwx/qt/manager/font_manager.hpp>
#include <scwx/qt/manager/placefile_manager.hpp>
#include <scwx/qt/settings/text_settings.hpp>
#include <scwx/qt/util/maplibre.hpp>
#include <scwx/qt/util/tooltip.hpp>
@ -62,8 +61,12 @@ public:
std::vector<std::shared_ptr<const gr::Placefile::TextDrawItem>> textList_ {};
std::vector<std::shared_ptr<const gr::Placefile::TextDrawItem>> newList_ {};
std::vector<std::shared_ptr<types::ImGuiFont>> fonts_ {};
std::vector<std::shared_ptr<types::ImGuiFont>> newFonts_ {};
std::vector<std::pair<std::shared_ptr<types::ImGuiFont>,
units::font_size::pixels<int>>>
fonts_ {};
std::vector<std::pair<std::shared_ptr<types::ImGuiFont>,
units::font_size::pixels<int>>>
newFonts_ {};
};
PlacefileText::PlacefileText(const std::string& placefileName) :
@ -159,7 +162,8 @@ void PlacefileText::Impl::RenderTextDrawItem(
std::size_t fontNumber = std::clamp<std::size_t>(di->fontNumber_, 0, 8);
// Set the font for the drop shadow and text
ImGui::PushFont(fonts_[fontNumber]->font(), 0.0f);
ImGui::PushFont(fonts_[fontNumber].first->font(),
fonts_[fontNumber].second.value());
if (settings::TextSettings::Instance()
.placefile_text_drop_shadow_enabled()
@ -261,9 +265,7 @@ void PlacefileText::StartText()
p->newList_.clear();
}
void PlacefileText::SetFonts(
const boost::unordered_flat_map<std::size_t,
std::shared_ptr<types::ImGuiFont>>& fonts)
void PlacefileText::SetFonts(const manager::PlacefileManager::FontMap& fonts)
{
auto defaultFont = manager::FontManager::Instance().GetImGuiFont(
types::FontCategory::Default);

View file

@ -2,6 +2,7 @@
#include <scwx/qt/gl/gl_context.hpp>
#include <scwx/qt/gl/draw/draw_item.hpp>
#include <scwx/qt/manager/placefile_manager.hpp>
#include <scwx/qt/types/imgui_font.hpp>
#include <scwx/gr/placefile.hpp>
@ -54,10 +55,7 @@ public:
*
* @param [in] fonts A map of ImGui fonts
*/
void
SetFonts(const boost::unordered_flat_map<std::size_t,
std::shared_ptr<types::ImGuiFont>>&
fonts);
void SetFonts(const manager::PlacefileManager::FontMap& fonts);
/**
* Adds placefile text to the internal draw list.

View file

@ -34,15 +34,13 @@ struct FontRecord
std::string filename_ {};
};
typedef std::pair<FontRecord, units::font_size::pixels<int>> FontRecordPair;
template<class Key>
struct FontRecordHash;
template<>
struct FontRecordHash<FontRecordPair>
struct FontRecordHash<FontRecord>
{
size_t operator()(const FontRecordPair& x) const;
size_t operator()(const FontRecord& x) const;
};
class FontManager::Impl
@ -77,18 +75,20 @@ public:
std::shared_mutex imguiFontAtlasMutex_ {};
boost::unordered_flat_map<FontRecordPair,
boost::unordered_flat_map<FontRecord,
std::shared_ptr<types::ImGuiFont>,
FontRecordHash<FontRecordPair>>
FontRecordHash<FontRecord>>
imguiFonts_ {};
std::shared_mutex imguiFontsMutex_ {};
boost::unordered_flat_map<std::string, std::vector<char>> rawFontData_ {};
std::mutex rawFontDataMutex_ {};
std::shared_ptr<types::ImGuiFont> defaultFont_ {};
std::pair<std::shared_ptr<types::ImGuiFont>, units::font_size::pixels<int>>
defaultFont_ {};
boost::unordered_flat_map<types::FontCategory,
std::shared_ptr<types::ImGuiFont>>
std::pair<std::shared_ptr<types::ImGuiFont>,
units::font_size::pixels<int>>>
fontCategoryImguiFontMap_ {};
boost::unordered_flat_map<types::FontCategory, QFont>
fontCategoryQFontMap_ {};
@ -160,6 +160,17 @@ void FontManager::InitializeFonts()
}
}
units::font_size::pixels<int>
FontManager::ImFontSize(units::font_size::pixels<double> size)
{
// Only allow whole pixels, and clamp to 6-72 pt
units::font_size::pixels<double> pixels {size};
units::font_size::pixels<int> imFontSize {
std::clamp(static_cast<int>(pixels.value()), 8, 96)};
return imFontSize;
}
void FontManager::Impl::UpdateImGuiFont(types::FontCategory fontCategory)
{
auto& textSettings = settings::TextSettings::Instance();
@ -170,7 +181,8 @@ void FontManager::Impl::UpdateImGuiFont(types::FontCategory fontCategory)
textSettings.font_point_size(fontCategory).GetValue()};
fontCategoryImguiFontMap_.insert_or_assign(
fontCategory, self_->LoadImGuiFont(family, {styles}, size));
fontCategory,
std::make_pair(self_->LoadImGuiFont(family, {styles}), ImFontSize(size)));
}
void FontManager::Impl::UpdateQFont(types::FontCategory fontCategory)
@ -211,7 +223,7 @@ int FontManager::GetFontId(types::Font font) const
return -1;
}
std::shared_ptr<types::ImGuiFont>
std::pair<std::shared_ptr<types::ImGuiFont>, units::font_size::pixels<int>>
FontManager::GetImGuiFont(types::FontCategory fontCategory)
{
std::unique_lock lock {p->fontCategoryMutex_};
@ -239,31 +251,23 @@ QFont FontManager::GetQFont(types::FontCategory fontCategory)
}
std::shared_ptr<types::ImGuiFont>
FontManager::LoadImGuiFont(const std::string& family,
const std::vector<std::string>& styles,
units::font_size::points<double> size,
bool loadIfNotFound)
FontManager::LoadImGuiFont(const std::string& family,
const std::vector<std::string>& styles,
bool loadIfNotFound)
{
const std::string styleString = fmt::format("{}", fmt::join(styles, " "));
const std::string fontString =
fmt::format("{}-{}:{}", family, size.value(), styleString);
const std::string fontString = fmt::format("{}:{}", family, styleString);
logger_->debug("LoadFontResource: {}", fontString);
FontRecord fontRecord = Impl::MatchFontFile(family, styles);
// Only allow whole pixels, and clamp to 6-72 pt
units::font_size::pixels<double> pixels {size};
units::font_size::pixels<int> imFontSize {
std::clamp(static_cast<int>(pixels.value()), 8, 96)};
auto imguiFontKey = std::make_pair(fontRecord, imFontSize);
// Search for a loaded ImGui font
{
std::shared_lock imguiFontLock {p->imguiFontsMutex_};
// Search for the associated ImGui font
auto it = p->imguiFonts_.find(imguiFontKey);
auto it = p->imguiFonts_.find(fontRecord);
if (it != p->imguiFonts_.end())
{
return it->second;
@ -288,7 +292,7 @@ FontManager::LoadImGuiFont(const std::string& family,
// Search for the associated ImGui font again, to prevent loading the same
// font twice
auto it = p->imguiFonts_.find(imguiFontKey);
auto it = p->imguiFonts_.find(fontRecord);
if (it != p->imguiFonts_.end())
{
return it->second;
@ -299,22 +303,20 @@ FontManager::LoadImGuiFont(const std::string& family,
try
{
fontName = fmt::format(
"{}:{}",
std::filesystem::path(fontRecord.filename_).filename().string(),
imFontSize.value());
"{}", std::filesystem::path(fontRecord.filename_).filename().string());
}
catch (const std::exception& ex)
{
logger_->warn(ex.what());
fontName = fmt::format("{}:{}", fontRecord.filename_, imFontSize.value());
fontName = fmt::format("{}", fontRecord.filename_);
}
// Create an ImGui font
std::shared_ptr<types::ImGuiFont> imguiFont =
std::make_shared<types::ImGuiFont>(fontName, rawFontData, imFontSize);
std::make_shared<types::ImGuiFont>(fontName, rawFontData);
// Store the ImGui font
p->imguiFonts_.insert_or_assign(imguiFontKey, imguiFont);
p->imguiFonts_.insert_or_assign(fontRecord, imguiFont);
// Return the ImGui font
return imguiFont;
@ -554,13 +556,12 @@ FontManager& FontManager::Instance()
return instance_;
}
size_t FontRecordHash<FontRecordPair>::operator()(const FontRecordPair& x) const
size_t FontRecordHash<FontRecord>::operator()(const FontRecord& x) const
{
size_t seed = 0;
boost::hash_combine(seed, x.first.family_);
boost::hash_combine(seed, x.first.style_);
boost::hash_combine(seed, x.first.filename_);
boost::hash_combine(seed, x.second.value());
boost::hash_combine(seed, x.family_);
boost::hash_combine(seed, x.style_);
boost::hash_combine(seed, x.filename_);
return seed;
}

View file

@ -28,18 +28,20 @@ public:
std::shared_mutex& imgui_font_atlas_mutex();
int GetFontId(types::Font font) const;
std::shared_ptr<types::ImGuiFont>
std::pair<std::shared_ptr<types::ImGuiFont>, units::font_size::pixels<int>>
GetImGuiFont(types::FontCategory fontCategory);
QFont GetQFont(types::FontCategory fontCategory);
std::shared_ptr<types::ImGuiFont>
LoadImGuiFont(const std::string& family,
const std::vector<std::string>& styles,
units::font_size::points<double> size,
bool loadIfNotFound = true);
LoadImGuiFont(const std::string& family,
const std::vector<std::string>& styles,
bool loadIfNotFound = true);
void LoadApplicationFont(types::Font font, const std::string& filename);
void InitializeFonts();
static units::font_size::pixels<int>
ImFontSize(units::font_size::pixels<double> size);
static FontManager& Instance();
private:

View file

@ -52,8 +52,7 @@ public:
void ReadPlacefileSettings();
void WritePlacefileSettings();
static boost::unordered_flat_map<std::size_t,
std::shared_ptr<types::ImGuiFont>>
static FontMap
LoadFontResources(const std::shared_ptr<gr::Placefile>& placefile);
static std::vector<std::shared_ptr<boost::gil::rgba8_image_t>>
LoadImageResources(const std::shared_ptr<gr::Placefile>& placefile);
@ -147,8 +146,7 @@ public:
std::mutex refreshMutex_ {};
std::mutex timerMutex_ {};
boost::unordered_flat_map<std::size_t, std::shared_ptr<types::ImGuiFont>>
fonts_ {};
FontMap fonts_ {};
std::mutex fontsMutex_ {};
std::vector<std::shared_ptr<boost::gil::rgba8_image_t>> images_ {};
@ -235,7 +233,7 @@ PlacefileManager::placefile(const std::string& name)
return nullptr;
}
boost::unordered_flat_map<std::size_t, std::shared_ptr<types::ImGuiFont>>
PlacefileManager::FontMap
PlacefileManager::placefile_fonts(const std::string& name)
{
std::shared_lock lock(p->placefileRecordLock_);
@ -775,13 +773,11 @@ std::shared_ptr<PlacefileManager> PlacefileManager::Instance()
return placefileManager;
}
boost::unordered_flat_map<std::size_t, std::shared_ptr<types::ImGuiFont>>
PlacefileManager::Impl::LoadFontResources(
PlacefileManager::FontMap PlacefileManager::Impl::LoadFontResources(
const std::shared_ptr<gr::Placefile>& placefile)
{
boost::unordered_flat_map<std::size_t, std::shared_ptr<types::ImGuiFont>>
imGuiFonts {};
auto fonts = placefile->fonts();
FontMap imGuiFonts {};
auto fonts = placefile->fonts();
for (auto& font : fonts)
{
@ -797,9 +793,11 @@ PlacefileManager::Impl::LoadFontResources(
styles.push_back("italic");
}
auto imGuiFont = FontManager::Instance().LoadImGuiFont(
font.second->face_, styles, size);
imGuiFonts.emplace(font.first, std::move(imGuiFont));
auto imGuiFont =
FontManager::Instance().LoadImGuiFont(font.second->face_, styles);
imGuiFonts.emplace(
font.first,
std::make_pair(std::move(imGuiFont), FontManager::ImFontSize(size)));
}
return imGuiFonts;

View file

@ -2,6 +2,7 @@
#include <scwx/gr/placefile.hpp>
#include <scwx/qt/config/radar_site.hpp>
#include <scwx/qt/types/font_types.hpp>
#include <scwx/qt/types/imgui_font.hpp>
#include <QObject>
@ -22,12 +23,16 @@ public:
explicit PlacefileManager();
~PlacefileManager();
using FontMap =
boost::unordered_flat_map<std::size_t,
std::pair<std::shared_ptr<types::ImGuiFont>,
units::font_size::pixels<int>>>;
bool placefile_enabled(const std::string& name);
bool placefile_thresholded(const std::string& name);
std::string placefile_title(const std::string& name);
std::shared_ptr<gr::Placefile> placefile(const std::string& name);
boost::unordered_flat_map<std::size_t, std::shared_ptr<types::ImGuiFont>>
placefile_fonts(const std::string& name);
FontMap placefile_fonts(const std::string& name);
void set_placefile_enabled(const std::string& name, bool enabled);
void set_placefile_thresholded(const std::string& name, bool thresholded);

View file

@ -102,7 +102,7 @@ void DrawLayer::ImGuiFrameStart(const std::shared_ptr<MapContext>& mapContext)
ImGui_ImplQt_NewFrame(mapContext->widget());
ImGui_ImplOpenGL3_NewFrame();
ImGui::NewFrame();
ImGui::PushFont(defaultFont->font(), 0.0f);
ImGui::PushFont(defaultFont.first->font(), defaultFont.second.value());
}
void DrawLayer::ImGuiFrameEnd()

View file

@ -1644,7 +1644,7 @@ void MapWidget::paintGL()
ImGui::NewFrame();
// Set default font
ImGui::PushFont(defaultFont->font(), 0.0f);
ImGui::PushFont(defaultFont.first->font(), defaultFont.second.value());
// Perform mouse picking
if (p->hasMouse_)

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@ -539,7 +539,8 @@ void OverlayLayer::Render(const std::shared_ptr<MapContext>& mapContext,
ImVec2 {1.0f, 1.0f});
ImGui::SetNextWindowBgAlpha(0.5f);
ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2 {3.0f, 2.0f});
ImGui::PushFont(attributionFont->font(), 0.0f);
ImGui::PushFont(attributionFont.first->font(),
attributionFont.second.value());
ImGui::Begin("Attribution",
nullptr,
ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize |

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@ -23,10 +23,9 @@ static const auto logger_ = scwx::util::Logger::Create(logPrefix_);
class ImGuiFont::Impl
{
public:
explicit Impl(const std::string& fontName,
const std::vector<char>& fontData,
units::font_size::pixels<int> size) :
fontName_ {fontName}, size_ {size}
explicit Impl(const std::string& fontName,
const std::vector<char>& fontData) :
fontName_ {fontName}
{
CreateImGuiFont(fontData);
}
@ -35,16 +34,14 @@ public:
void CreateImGuiFont(const std::vector<char>& fontData);
const std::string fontName_;
const units::font_size::pixels<int> size_;
const std::string fontName_;
ImFont* imFont_ {nullptr};
};
ImGuiFont::ImGuiFont(const std::string& fontName,
const std::vector<char>& fontData,
units::font_size::pixels<int> size) :
p(std::make_unique<Impl>(fontName, fontData, size))
ImGuiFont::ImGuiFont(const std::string& fontName,
const std::vector<char>& fontData) :
p(std::make_unique<Impl>(fontName, fontData))
{
}
ImGuiFont::~ImGuiFont() = default;
@ -53,11 +50,11 @@ void ImGuiFont::Impl::CreateImGuiFont(const std::vector<char>& fontData)
{
logger_->debug("Creating Font: {}", fontName_);
static constexpr float kSizePixels_ = 0.0f;
ImFontAtlas* fontAtlas = model::ImGuiContextModel::Instance().font_atlas();
ImFontConfig fontConfig {};
const float sizePixels = static_cast<float>(size_.value());
// Do not transfer ownership of font data to ImGui, makes const_cast safe
fontConfig.FontDataOwnedByAtlas = false;
@ -69,7 +66,7 @@ void ImGuiFont::Impl::CreateImGuiFont(const std::vector<char>& fontData)
const_cast<void*>(static_cast<const void*>(fontData.data())),
static_cast<int>(std::clamp<std::size_t>(
fontData.size(), 0, std::numeric_limits<int>::max())),
sizePixels,
kSizePixels_,
&fontConfig);
}

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@ -4,8 +4,6 @@
#include <string>
#include <vector>
#include <scwx/qt/types/font_types.hpp>
struct ImFont;
namespace scwx
@ -18,9 +16,8 @@ namespace types
class ImGuiFont
{
public:
explicit ImGuiFont(const std::string& fontName,
const std::vector<char>& fontData,
units::font_size::pixels<int> size);
explicit ImGuiFont(const std::string& fontName,
const std::vector<char>& fontData);
~ImGuiFont();
ImGuiFont(const ImGuiFont&) = delete;

View file

@ -34,7 +34,7 @@ void ImGui::DrawTooltip(const std::string& hoverText)
if (::ImGui::BeginTooltip())
{
::ImGui::PushFont(tooltipFont->font(), 0.0f);
::ImGui::PushFont(tooltipFont.first->font(), tooltipFont.second.value());
::ImGui::TextUnformatted(hoverText.c_str());
::ImGui::PopFont();
::ImGui::EndTooltip();