logmeow/event_loop.cpp

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#include <imgui.h>
#include <imgui_stdlib.h>
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#include "log.h"
#include "config.h"
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#include "logcat_thread.h"
static inline void write_config_and_update_structures(const Config& config) {
try {
write_config(config);
} catch (const std::exception& e) {
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log(std::string("Failed to write config: ") + e.what());
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return;
}
}
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static inline void check_for_logcat_items(LogcatThread& logcat_thread) {
LogcatThreadItem* logcat_thread_item;
while ((logcat_thread_item = logcat_thread.atomic_ring_buffer.get())) {
if (std::holds_alternative<std::string>(*logcat_thread_item)) {
if (!log_entries.empty()) {
log_entries += '\n';
}
log_entries += std::move(std::get<std::string>(*logcat_thread_item));
} else {
throw std::runtime_error("Cannot handle all possible logcat thread item variants");
}
logcat_thread.atomic_ring_buffer.increment_read();
}
}
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static inline void settings_window(Config& config, float* config_write_timer, bool* show_settings_window) {
if (!ImGui::Begin("Settings", show_settings_window)) {
ImGui::End();
return;
}
// TODO actually have process control
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ImGui::Text("Logcat command only takes effect when logcat is not running");
if (ImGui::InputTextWithHint("Logcat command", "adb logcat -Dv 'threadtime UTC epoch usec uid'", &config.logcat_command)) {
*config_write_timer = *config_write_timer > 0.0f ? *config_write_timer : 5.0f;
}
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ImGui::Text("Font sizes only take effect when LogMeow is restarted");
#ifdef USE_FONTCONFIG
if (ImGui::InputFloat("Normal font size", &config.normal_font_size, 0.5f, 1.0f, "%.3f")) {
*config_write_timer = *config_write_timer > 0.0f ? *config_write_timer : 5.0f;
}
#endif
if (ImGui::InputFloat("Monospace font size", &config.monospace_font_size, 0.5f, 1.0f, "%.3f")) {
*config_write_timer = *config_write_timer > 0.0f ? *config_write_timer : 5.0f;
}
ImGui::End();
}
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static inline void logs_window(ImFont* monospace_font, bool* autoscrolling, bool* show_logs_window) {
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if (!ImGui::Begin("LogMeow Logs", show_logs_window)) {
ImGui::End();
return;
}
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if (ImGui::Button("Clear")) {
log_entries.clear();
}
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ImGui::SameLine();
if (ImGui::Button("Copy")) {
ImGui::SetClipboardText(log_entries.c_str());
}
ImGui::Separator();
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// copied from imgui/imgui_demo.cpp: [SECTION] Example App: Debug Console / ShowExampleAppConsole()
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if (ImGui::BeginChild("ScrollingRegion", ImVec2(0, 0), false, ImGuiWindowFlags_HorizontalScrollbar)) {
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ImGui::PushFont(monospace_font);
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ImGui::TextUnformatted(log_entries.data(), &log_entries[log_entries.size()]);
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ImGui::PopFont();
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if (ImGui::GetScrollY() >= ImGui::GetScrollMaxY()) {
*autoscrolling = true;
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ImGui::SetScrollHereY(1.0f);
}
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}
ImGui::EndChild();
ImGui::End();
}
static inline void main_window(bool latest_log_entries_read, bool* show_settings_window, bool* show_logs_window, bool* run_event_loop) {
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if (!ImGui::Begin("LogMeow", run_event_loop)) {
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ImGui::End();
return;
}
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if (ImGui::Button("Settings")) {
*show_settings_window = true;
}
ImGui::SameLine();
if (!latest_log_entries_read) {
ImGui::PushStyleColor(ImGuiCol_Button, (ImVec4)ImColor::HSV(0.0f, 0.6f, 0.6f));
ImGui::PushStyleColor(ImGuiCol_ButtonHovered, (ImVec4)ImColor::HSV(0.0f, 0.7f, 0.7f));
ImGui::PushStyleColor(ImGuiCol_ButtonActive, (ImVec4)ImColor::HSV(0.0f, 0.8f, 0.8f));
}
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if (ImGui::Button("Logs")) {
*show_logs_window = true;
}
if (!latest_log_entries_read) {
ImGui::PopStyleColor(3);
}
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ImGui::End();
}
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#ifndef NDEBUG
static inline void debug_window(LogcatThread& logcat_thread) {
static bool show_demo_window = false;
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static size_t add_log_entry_presses = 1;
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static bool log_entry_every_second = false;
static float log_entry_every_second_delta;
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if (show_demo_window) {
ImGui::ShowDemoWindow(&show_demo_window);
}
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if (!ImGui::Begin("LogMeow Debug")) {
ImGui::End();
return;
}
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ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
ImGui::Checkbox("Show Dear ImGui Demo Window", &show_demo_window);
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ImGui::Separator();
if (ImGui::Button("Add Log Entry")) {
log(std::string("Debug log entry #") + std::to_string(add_log_entry_presses++) + " (activated via manual button press)");
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}
ImGui::SameLine();
// returns true when it's pressed
if (ImGui::Checkbox("Add log entry every second", &log_entry_every_second)) {
log_entry_every_second_delta = 0.0f;
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}
if (ImGui::Button("Add Log Entry with Newlines")) {
log("The following should have five spaces: \"\n\n\n\n\n\"");
}
if (ImGui::Button("Request log entry from Logcat thread")) {
logcat_thread.debug_log_request.test_and_set();
}
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if (log_entry_every_second) {
log_entry_every_second_delta += ImGui::GetIO().DeltaTime;
if (log_entry_every_second_delta >= 1.0f) {
log_entry_every_second_delta = 0.0f;
log(std::string("Debug log entry #") + std::to_string(add_log_entry_presses++) + " (activated by add log entry every second)");
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}
}
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ImGui::End();
}
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#endif
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void event_loop(ImFont* monospace_font, Config& config, float* config_write_timer, LogcatThread& logcat_thread, bool* run_event_loop) {
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static bool show_settings_window = false;
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static bool show_logs_window = false;
static size_t log_entries_read = 0;
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check_for_logcat_items(logcat_thread);
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#ifndef NDEBUG
debug_window(logcat_thread);
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#endif
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if (show_settings_window) {
settings_window(config, config_write_timer, &show_settings_window);
}
if (*config_write_timer > 0.0f) {
*config_write_timer -= ImGui::GetIO().DeltaTime;
if (*config_write_timer <= 0.0f) {
write_config_and_update_structures(config);
}
}
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if (show_logs_window) {
bool autoscrolling = false;
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logs_window(monospace_font, &autoscrolling, &show_logs_window);
if (autoscrolling) {
log_entries_read = log_entries.size();
}
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}
// log_entries must not be mutated until the show logs button
main_window(log_entries_read == log_entries.size(), &show_settings_window, &show_logs_window, run_event_loop);
}