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main.cpp
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main.cpp
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/*! \file main.cpp
* \brief HNTerm - browse Hacker News in the terminal
*/
#include "imtui/imtui.h"
#include "hn-state.h"
#ifdef __EMSCRIPTEN__
#include "imtui/imtui-impl-emscripten.h"
#include <emscripten.h>
#include <emscripten/html5.h>
#else
#define EMSCRIPTEN_KEEPALIVE
#include "imtui/imtui-impl-ncurses.h"
#endif
#include <map>
#include <vector>
#include <string>
#include <functional>
// global vars
bool g_updated = false;
ImTui::TScreen * g_screen = nullptr;
// platform specific functions
extern bool hnInit();
extern void hnFree();
extern int openInBrowser(std::string uri);
// helper functions
namespace {
[[maybe_unused]]
std::map<std::string, std::string> parseCmdArguments(int argc, char ** argv) {
int last = argc;
std::map<std::string, std::string> res;
for (int i = 1; i < last; ++i) {
res[argv[i]] = "";
if (argv[i][0] == '-') {
if (strlen(argv[i]) > 1) {
res[std::string(1, argv[i][1])] = strlen(argv[i]) > 2 ? argv[i] + 2 : "";
}
}
}
return res;
}
}
namespace UI {
enum class WindowContent : int {
Top,
//Best,
Show,
Ask,
New,
Count,
};
enum class StoryListMode : int {
Micro,
Normal,
Spread,
COUNT,
};
enum class ColorScheme : int {
Default,
Dark,
Green,
COUNT,
};
std::map<WindowContent, std::string> kContentStr = {
{ WindowContent::Top, "Top" },
//{ WindowContent::Best, "Best" },
{ WindowContent::Show, "Show" },
{ WindowContent::Ask, "Ask" },
{ WindowContent::New, "New" },
};
struct WindowData {
WindowContent content;
bool showComments = false;
HN::ItemId selectedStoryId = 0;
int hoveredStoryId = 0;
int hoveredCommentId = 0;
int maxStories = 10;
};
struct State {
int hoveredWindowId = 0;
int statusWindowHeight = 4;
ColorScheme colorScheme = ColorScheme::Dark;
StoryListMode storyListMode = StoryListMode::Normal;
#ifdef __EMSCRIPTEN__
bool showHelpWelcome = true;
#else
bool showHelpWelcome = false;
#endif
bool showHelpModal = false;
bool showStatusWindow = true;
int nWindows = 2;
char statusWindowHeader[512];
std::map<int, bool> collapsed;
void changeColorScheme(bool inc = true) {
if (inc) {
colorScheme = (ColorScheme)(((int) colorScheme + 1) % ((int)ColorScheme::COUNT));
}
ImVec4* colors = ImGui::GetStyle().Colors;
switch (colorScheme) {
case ColorScheme::Default:
{
colors[ImGuiCol_Text] = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
colors[ImGuiCol_TextDisabled] = ImVec4(0.60f, 0.60f, 0.60f, 1.00f);
colors[ImGuiCol_WindowBg] = ImVec4(0.96f, 0.96f, 0.94f, 1.00f);
colors[ImGuiCol_TitleBg] = ImVec4(1.00f, 0.40f, 0.00f, 1.00f);
colors[ImGuiCol_TitleBgActive] = ImVec4(1.00f, 0.40f, 0.00f, 1.00f);
colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.69f, 0.25f, 0.00f, 1.00f);
colors[ImGuiCol_ChildBg] = ImVec4(0.96f, 0.96f, 0.94f, 1.00f);
colors[ImGuiCol_PopupBg] = ImVec4(0.96f, 0.96f, 0.94f, 1.00f);
colors[ImGuiCol_ModalWindowDimBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
}
break;
case ColorScheme::Dark:
{
colors[ImGuiCol_Text] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
colors[ImGuiCol_TextDisabled] = ImVec4(0.60f, 0.60f, 0.60f, 1.00f);
colors[ImGuiCol_WindowBg] = ImVec4(0.10f, 0.10f, 0.10f, 1.00f);
colors[ImGuiCol_TitleBg] = ImVec4(1.00f, 0.40f, 0.00f, 0.50f);
colors[ImGuiCol_TitleBgActive] = ImVec4(1.00f, 0.40f, 0.00f, 0.50f);
colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.69f, 0.25f, 0.00f, 0.50f);
colors[ImGuiCol_ChildBg] = ImVec4(0.10f, 0.10f, 0.10f, 1.00f);
colors[ImGuiCol_PopupBg] = ImVec4(0.20f, 0.20f, 0.20f, 1.00f);
colors[ImGuiCol_ModalWindowDimBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
}
break;
case ColorScheme::Green:
{
colors[ImGuiCol_Text] = ImVec4(0.00f, 1.00f, 0.00f, 1.00f);
colors[ImGuiCol_TextDisabled] = ImVec4(0.60f, 0.60f, 0.60f, 1.00f);
colors[ImGuiCol_WindowBg] = ImVec4(0.10f, 0.10f, 0.10f, 1.00f);
colors[ImGuiCol_TitleBg] = ImVec4(0.25f, 0.25f, 0.25f, 1.00f);
colors[ImGuiCol_TitleBgActive] = ImVec4(0.25f, 0.25f, 0.25f, 1.00f);
colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.50f, 1.00f, 0.50f, 1.00f);
colors[ImGuiCol_ChildBg] = ImVec4(0.10f, 0.10f, 0.10f, 1.00f);
colors[ImGuiCol_PopupBg] = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
colors[ImGuiCol_ModalWindowDimBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
}
break;
default:
{
}
}
}
std::array<WindowData, 3> windows { {
{
WindowContent::Top,
false,
0, 0, 0, 10,
},
{
WindowContent::Show,
false,
0, 0, 0, 10,
},
{
WindowContent::New,
false,
0, 0, 0, 10,
},
} };
};
}
// HackerNews content
HN::State stateHN;
// UI state
UI::State stateUI;
extern "C" {
EMSCRIPTEN_KEEPALIVE
bool render_frame() {
HN::ItemIds toUpdate;
HN::ItemIds toRefresh;
#ifdef __EMSCRIPTEN__
ImTui_ImplEmscripten_NewFrame();
#else
bool isActive = g_updated;
isActive |= ImTui_ImplNcurses_NewFrame();
#endif
ImTui_ImplText_NewFrame();
ImGui::NewFrame();
if (ImGui::GetIO().DisplaySize.x < 50) {
stateUI.nWindows = 1;
}
for (int windowId = 0; windowId < stateUI.nWindows; ++windowId) {
const auto & items = stateHN.items;
auto & window = stateUI.windows[windowId];
{
auto wSize = ImGui::GetIO().DisplaySize;
wSize.x /= stateUI.nWindows;
if (stateUI.showStatusWindow) {
wSize.y -= stateUI.statusWindowHeight;
}
wSize.x = int(wSize.x);
ImGui::SetNextWindowPos(ImVec2(wSize.x*windowId, 0), ImGuiCond_Always);
if (windowId < stateUI.nWindows - 1) {
wSize.x -= 1.1;
}
ImGui::SetNextWindowSize(wSize, ImGuiCond_Always);
}
std::string title = "[Y] Hacker News (" + UI::kContentStr[window.content] + ")##" + std::to_string(windowId);
ImGui::Begin(title.c_str(), nullptr,
ImGuiWindowFlags_NoCollapse |
ImGuiWindowFlags_NoResize |
ImGuiWindowFlags_NoMove |
ImGuiWindowFlags_NoScrollbar);
ImGui::Text("%s", "");
if (window.showComments == false) {
const auto & storyIds =
(window.content == UI::WindowContent::Top) ? stateHN.idsTop :
(window.content == UI::WindowContent::Show) ? stateHN.idsShow :
(window.content == UI::WindowContent::New) ? stateHN.idsNew :
stateHN.idsTop;
int nShow = std::min(window.maxStories, (int) storyIds.size());
for (int i = 0; i < nShow; ++i) {
const auto & id = storyIds[i];
toRefresh.push_back(id);
if (items.find(id) == items.end() || (
std::holds_alternative<HN::Story>(items.at(id).data) == false &&
std::holds_alternative<HN::Job>(items.at(id).data) == false)) {
continue;
}
const auto & item = items.at(id);
bool isHovered = false;
if (std::holds_alternative<HN::Story>(item.data)) {
const HN::Story & story = std::get<HN::Story>(item.data);
auto p0 = ImGui::GetCursorScreenPos();
// draw text to be able to calculate the final text size
ImGui::PushTextWrapPos(ImGui::GetContentRegionAvailWidth());
ImGui::Text("%2d.", i + 1);
ImGui::SameLine();
ImGui::Text("%s", story.title.c_str());
// draw hovered story highlight
if (windowId == stateUI.hoveredWindowId && i == window.hoveredStoryId) {
auto col0 = ImGui::GetStyleColorVec4(ImGuiCol_Text);
auto col1 = ImGui::GetStyleColorVec4(ImGuiCol_WindowBg);
ImGui::PushStyleColor(ImGuiCol_Text, col1);
ImGui::PushStyleColor(ImGuiCol_TextDisabled, col0);
auto p1 = ImGui::GetCursorScreenPos();
p1.y -= 1;
if (p1.y > p0.y) {
p1.x += ImGui::GetContentRegionAvailWidth() - 1;
} else {
p1.x += ImGui::CalcTextSize(story.title.c_str()).x + 5;
}
// highlight rectangle
ImGui::GetWindowDrawList()->AddRectFilled(p0, p1, ImGui::GetColorU32(col0));
if (ImGui::IsKeyPressed('o', false) || ImGui::IsKeyPressed('O', false)) {
openInBrowser(story.url);
}
}
// go back to original position and redraw text over the highlight
ImGui::SetCursorScreenPos(p0);
ImGui::Text("%2d.", i + 1);
isHovered |= ImGui::IsItemHovered();
ImGui::SameLine();
ImGui::Text("%s", story.title.c_str());
isHovered |= ImGui::IsItemHovered();
ImGui::PopTextWrapPos();
ImGui::SameLine();
if (windowId == stateUI.hoveredWindowId && i == window.hoveredStoryId) {
ImGui::PopStyleColor(2);
}
ImGui::TextDisabled(" (%s)", story.domain.c_str());
if (stateUI.storyListMode != UI::StoryListMode::Micro) {
ImGui::TextDisabled(" %d points by %s %s ago | %d comments", story.score, story.by.c_str(), stateHN.timeSince(story.time).c_str(), story.descendants);
isHovered |= ImGui::IsItemHovered();
}
} else if (std::holds_alternative<HN::Job>(item.data)) {
const HN::Job & job = std::get<HN::Job>(item.data);
if (windowId == stateUI.hoveredWindowId && i == window.hoveredStoryId) {
auto col0 = ImGui::GetStyleColorVec4(ImGuiCol_Text);
auto col1 = ImGui::GetStyleColorVec4(ImGuiCol_WindowBg);
ImGui::PushStyleColor(ImGuiCol_Text, col1);
ImGui::PushStyleColor(ImGuiCol_TextDisabled, col0);
auto p0 = ImGui::GetCursorScreenPos();
p0.x += 1;
auto p1 = p0;
p1.x += ImGui::CalcTextSize(job.title.c_str()).x + 4;
ImGui::GetWindowDrawList()->AddRectFilled(p0, p1, ImGui::GetColorU32(col0));
if (ImGui::IsKeyPressed('o', false) || ImGui::IsKeyPressed('O', false)) {
openInBrowser(job.url);
}
}
ImGui::Text("%2d.", i + 1);
isHovered |= ImGui::IsItemHovered();
ImGui::SameLine();
ImGui::PushTextWrapPos(ImGui::GetContentRegionAvailWidth());
ImGui::Text("%s", job.title.c_str());
isHovered |= ImGui::IsItemHovered();
ImGui::PopTextWrapPos();
ImGui::SameLine();
if (windowId == stateUI.hoveredWindowId && i == window.hoveredStoryId) {
ImGui::PopStyleColor(2);
}
ImGui::TextDisabled(" (%s)", job.domain.c_str());
if (stateUI.storyListMode != UI::StoryListMode::Micro) {
ImGui::TextDisabled(" %d points by %s %s ago", job.score, job.by.c_str(), stateHN.timeSince(job.time).c_str());
isHovered |= ImGui::IsItemHovered();
}
}
if (isHovered) {
stateUI.hoveredWindowId = windowId;
window.hoveredStoryId = i;
}
if (stateUI.storyListMode == UI::StoryListMode::Spread) {
ImGui::Text("%s", "");
}
if (ImGui::GetCursorScreenPos().y + 3 > ImGui::GetWindowSize().y) {
window.maxStories = i + 1;
break;
} else {
if ((i == window.maxStories - 1) && (ImGui::GetCursorScreenPos().y + 2 < ImGui::GetWindowSize().y)) {
++window.maxStories;
}
}
}
if (windowId == stateUI.hoveredWindowId) {
if (ImGui::IsMouseDoubleClicked(0) ||
ImGui::IsKeyPressed(ImGui::GetIO().KeyMap[ImGuiKey_Enter], false)) {
if (stateUI.showHelpModal == false && window.hoveredStoryId < (int) storyIds.size()) {
window.showComments = true;
window.selectedStoryId = storyIds[window.hoveredStoryId];
}
}
if (ImGui::IsKeyPressed('r', false) && window.hoveredStoryId < (int) storyIds.size()) {
toUpdate.push_back(storyIds[window.hoveredStoryId]);
}
if (ImGui::IsKeyPressed('k', true) ||
ImGui::IsKeyPressed(ImGui::GetIO().KeyMap[ImGuiKey_UpArrow], true)) {
window.hoveredStoryId = std::max(0, window.hoveredStoryId - 1);
}
if (ImGui::IsKeyPressed('j', true) ||
ImGui::IsKeyPressed(ImGui::GetIO().KeyMap[ImGuiKey_DownArrow], true)) {
window.hoveredStoryId = std::max(0, std::min(nShow - 1, window.hoveredStoryId + 1));
}
if (ImGui::IsKeyPressed('g', true)) {
window.hoveredStoryId = 0;
}
if (ImGui::IsKeyPressed('G', true)) {
window.hoveredStoryId = nShow - 1;
}
if (ImGui::IsKeyPressed(ImGui::GetIO().KeyMap[ImGuiKey_Tab])) {
stateUI.windows[stateUI.hoveredWindowId].content =
(UI::WindowContent) ((int(stateUI.windows[stateUI.hoveredWindowId].content) + 1)%int(UI::WindowContent::Count));
}
}
} else {
if (std::holds_alternative<HN::Story>(items.at(window.selectedStoryId).data) == false) {
window.showComments = false;
} else {
const auto & story = std::get<HN::Story>(items.at(window.selectedStoryId).data);
toRefresh.push_back(story.id);
ImGui::Text("%s", story.title.c_str());
ImGui::TextDisabled("%d points by %s %s ago | %d comments", story.score, story.by.c_str(), stateHN.timeSince(story.time).c_str(), story.descendants);
if (story.text.empty() == false) {
ImGui::PushTextWrapPos(ImGui::GetContentRegionAvailWidth());
ImGui::Text("%s", story.text.c_str());
ImGui::PopTextWrapPos();
}
ImGui::Text("%s", "");
int curCommentId = 0;
bool forceUpdate = false;
std::function<void(const HN::ItemIds & commentIds, int indent)> renderComments;
renderComments = [&](const HN::ItemIds & commentIds, int indent) {
const int nComments = commentIds.size();
for (int i = 0; i < nComments; ++i) {
const auto & id = commentIds[i];
if (forceUpdate) {
toUpdate.push_back(id);
}
toRefresh.push_back(commentIds[i]);
if (items.find(id) == items.end() || std::holds_alternative<HN::Comment>(items.at(id).data) == false) {
continue;
}
const auto & item = items.at(id);
const auto & comment = std::get<HN::Comment>(item.data);
char header[128];
snprintf(header, 128, "%*s %s %s ago [%s]", indent, "", comment.by.c_str(), stateHN.timeSince(comment.time).c_str(), stateUI.collapsed[id] ? "+" : "-");
if (windowId == stateUI.hoveredWindowId && curCommentId == window.hoveredCommentId) {
auto col0 = ImGui::GetStyleColorVec4(ImGuiCol_TextDisabled);
auto col1 = ImGui::GetStyleColorVec4(ImGuiCol_WindowBg);
ImGui::PushStyleColor(ImGuiCol_TextDisabled, col1);
auto p0 = ImGui::GetCursorScreenPos();
p0.x += 1 + indent;
auto p1 = p0;
p1.x += ImGui::CalcTextSize(header).x - indent;
ImGui::GetWindowDrawList()->AddRectFilled(p0, p1, ImGui::GetColorU32(col0));
if (ImGui::GetCursorScreenPos().y < 4) {
ImGui::SetScrollHereY(0.0f);
}
}
bool isHovered = false;
ImGui::TextDisabled("%s", header);
isHovered |= ImGui::IsItemHovered();
if (windowId == stateUI.hoveredWindowId && curCommentId == window.hoveredCommentId) {
ImGui::PopStyleColor(1);
}
if (stateUI.collapsed[id] == false) {
ImGui::PushTextWrapPos(ImGui::GetContentRegionAvailWidth());
ImGui::Text("%*s", indent, "");
ImGui::SameLine();
ImGui::Text("%s", comment.text.c_str());
isHovered |= ImGui::IsItemHovered();
ImGui::PopTextWrapPos();
}
if (windowId == stateUI.hoveredWindowId && curCommentId == window.hoveredCommentId) {
if (ImGui::GetCursorScreenPos().y > ImGui::GetWindowSize().y + 4) {
ImGui::SetScrollHereY(1.0f);
}
if (ImGui::IsMouseDoubleClicked(0) ||
ImGui::IsKeyPressed(ImGui::GetIO().KeyMap[ImGuiKey_Enter], false)) {
stateUI.collapsed[id] = !stateUI.collapsed[id];
}
}
if (isHovered) {
window.hoveredCommentId = curCommentId;
}
ImGui::Text("%s", "");
++curCommentId;
if (stateUI.collapsed[id] == false ) {
if (comment.kids.size() > 0) {
renderComments(comment.kids, indent + 1);
}
} else {
//curCommentId += comment.kids.size();
}
}
};
if (windowId == stateUI.hoveredWindowId) {
if (ImGui::IsKeyPressed('r', false)) {
toUpdate.push_back(story.id);
forceUpdate = true;
}
}
ImGui::BeginChild("##comments", ImVec2(0, 0), false, ImGuiWindowFlags_NoScrollbar);
renderComments(story.kids, 0);
ImGui::EndChild();
if (windowId == stateUI.hoveredWindowId) {
if (ImGui::IsKeyPressed('k', true) ||
ImGui::IsKeyPressed(ImGui::GetIO().KeyMap[ImGuiKey_UpArrow], true)) {
window.hoveredCommentId = std::max(0, window.hoveredCommentId - 1);
}
if (ImGui::IsKeyPressed('j', true) ||
ImGui::IsKeyPressed(ImGui::GetIO().KeyMap[ImGuiKey_DownArrow], true)) {
window.hoveredCommentId = std::min(curCommentId - 1, window.hoveredCommentId + 1);
}
if (ImGui::IsKeyPressed('g', true)) {
window.hoveredCommentId = 0;
}
if (ImGui::IsKeyPressed('G', true)) {
window.hoveredCommentId = curCommentId - 1;
}
if (ImGui::IsKeyPressed('o', false) || ImGui::IsKeyPressed('O', false)) {
openInBrowser((std::string("https://news.ycombinator.com/item?id=") + std::to_string(story.id)).c_str());
}
if (ImGui::IsMouseClicked(1) ||
ImGui::IsMouseClicked(2) ||
ImGui::IsKeyPressed('q', false) ||
ImGui::IsKeyPressed('b', false) ||
ImGui::IsKeyPressed(ImGui::GetIO().KeyMap[ImGuiKey_Backspace], false)) {
window.showComments = false;
}
}
window.hoveredCommentId = std::min(curCommentId - 1, window.hoveredCommentId);
}
}
ImGui::End();
}
if (ImGui::IsKeyPressed(ImGui::GetIO().KeyMap[ImGuiKey_LeftArrow], true)) {
stateUI.hoveredWindowId = std::max(0, stateUI.hoveredWindowId - 1);
}
if (ImGui::IsKeyPressed(ImGui::GetIO().KeyMap[ImGuiKey_RightArrow], true)) {
stateUI.hoveredWindowId = std::min(stateUI.nWindows - 1, stateUI.hoveredWindowId + 1);
}
if (stateUI.showStatusWindow) {
{
auto wSize = ImGui::GetIO().DisplaySize;
ImGui::SetNextWindowPos(ImVec2(0, wSize.y - stateUI.statusWindowHeight), ImGuiCond_Always);
ImGui::SetNextWindowSize(ImVec2(wSize.x, stateUI.statusWindowHeight), ImGuiCond_Always);
}
snprintf(stateUI.statusWindowHeader, 512, "Status | Story List Mode : %d |", (int) (stateUI.storyListMode));
ImGui::Begin(stateUI.statusWindowHeader, nullptr,
ImGuiWindowFlags_NoCollapse |
ImGuiWindowFlags_NoResize |
ImGuiWindowFlags_NoMove);
ImGui::Text(" API requests : %d / %d B (next update in %d s)", stateHN.nFetches, (int) stateHN.totalBytesDownloaded, stateHN.nextUpdate);
ImGui::Text(" Last API request : %s", stateHN.curURI);
ImGui::Text(" Source code : https://github.com/ggerganov/hnterm");
ImGui::End();
}
if (ImGui::IsKeyPressed('s', false)) {
stateUI.showStatusWindow = !stateUI.showStatusWindow;
}
if (ImGui::IsKeyPressed('1', false)) {
stateUI.nWindows = 1;
}
if (ImGui::IsKeyPressed('2', false)) {
stateUI.nWindows = 2;
}
if (ImGui::IsKeyPressed('3', false)) {
stateUI.nWindows = 3;
}
if (ImGui::IsKeyPressed('v', false)) {
stateUI.storyListMode = (UI::StoryListMode)(((int)(stateUI.storyListMode) + 1)%((int)(UI::StoryListMode::COUNT)));
}
if (ImGui::IsKeyPressed('c', false)) {
stateUI.changeColorScheme();
}
if (ImGui::IsKeyPressed('Q', false)) {
return false;
}
stateUI.hoveredWindowId = std::min(stateUI.nWindows - 1, stateUI.hoveredWindowId);
if (stateUI.showHelpWelcome || (stateUI.showHelpModal == false && (ImGui::IsKeyReleased('h') || ImGui::IsKeyReleased('H')))) {
stateUI.showHelpWelcome = false;
ImGui::OpenPopup("###Help");
auto col = ImGui::GetStyleColorVec4(ImGuiCol_WindowBg);
col.w *= 0.9;
ImGui::GetStyle().Colors[ImGuiCol_WindowBg] = col;
}
if (ImGui::BeginPopupModal("HNTerm v0.3###Help", NULL, ImGuiWindowFlags_AlwaysAutoResize)) {
#ifdef __EMSCRIPTEN__
ImGui::Text(" ");
ImGui::Text("---------------------------------------------");
ImGui::Text("Emscripten port of HNTerm");
ImGui::Text("This demo is not suitable for mobile devices!");
ImGui::Text("---------------------------------------------");
#endif
ImGui::Text(" ");
ImGui::Text("Interactive browsing of https://news.ycombinator.com/");
ImGui::Text("Content is automatically updated - no need to refresh ");
ImGui::Text(" ");
ImGui::Text(" h/H - toggle Help window ");
ImGui::Text(" s - toggle Status window ");
ImGui::Text(" g - go to top ");
ImGui::Text(" G - go to end ");
ImGui::Text(" o/O - open in browser ");
ImGui::Text(" up/down/j/k - navigate items ");
ImGui::Text(" left/right - navigate windows ");
ImGui::Text(" Tab - change current window content ");
ImGui::Text(" 1/2/3 - change number of windows ");
ImGui::Text(" q/b/bkspc - close comments ");
ImGui::Text(" v - toggle story view mode ");
ImGui::Text(" r - force refresh story ");
ImGui::Text(" c - change colors ");
ImGui::Text(" Q - quit ");
ImGui::Text(" ");
if (stateUI.showHelpModal) {
for (int i = 0; i < 512; ++i) {
if (ImGui::IsKeyReleased(i) || ImGui::IsMouseDown(0)) {
ImGui::CloseCurrentPopup();
auto col = ImGui::GetStyleColorVec4(ImGuiCol_WindowBg);
col.w = 1.0;
ImGui::GetStyle().Colors[ImGuiCol_WindowBg] = col;
stateUI.showHelpModal = false;
break;
}
}
} else {
stateUI.showHelpModal = true;
}
ImGui::EndPopup();
}
ImGui::Render();
ImTui_ImplText_RenderDrawData(ImGui::GetDrawData(), g_screen);
#ifndef __EMSCRIPTEN__
ImTui_ImplNcurses_DrawScreen(isActive);
#endif
stateHN.forceUpdate(toUpdate);
g_updated = stateHN.update(toRefresh);
return true;
}
}
int main([[maybe_unused]] int argc, [[maybe_unused]] char ** argv) {
#ifndef __EMSCRIPTEN__
auto argm = parseCmdArguments(argc, argv);
int mouseSupport = argm.find("--mouse") != argm.end() || argm.find("m") != argm.end();
if (argm.find("--help") != argm.end() || argm.find("-h") != argm.end()) {
printf("Usage: hnterm [-m] [-h]\n");
printf(" -m, --mouse : ncurses mouse support\n");
printf(" -h, --help : print this help\n");
return -1;
}
#endif
if (hnInit() == false) {
fprintf(stderr, "Failed to initialize. Aborting\n");
return -1;
}
IMGUI_CHECKVERSION();
ImGui::CreateContext();
#ifdef __EMSCRIPTEN__
g_screen = ImTui_ImplEmscripten_Init(true);
#else
// when no changes occured - limit frame rate to 3.0 fps to save CPU
g_screen = ImTui_ImplNcurses_Init(mouseSupport != 0, 60.0, 3.0);
#endif
ImTui_ImplText_Init();
stateUI.changeColorScheme(false);
#ifndef __EMSCRIPTEN__
while (true) {
if (render_frame() == false) break;
}
ImTui_ImplText_Shutdown();
ImTui_ImplNcurses_Shutdown();
hnFree();
#endif
return 0;
}