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https://github.com/ocornut/imgui.git
synced 2026-11-08 07:25:54 +01:00
adjust brace and bracket style to match imgui standard
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SlowRiot
parent
2787e65712
commit
0680e7d7a9
@ -162,30 +162,35 @@ static const std::unordered_map<std::string, ImGuiKey> key_translate_lookup{
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};
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ImGuiKey translate_key(char const* emscripten_key) __attribute__((__const__));
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ImGuiKey translate_key(char const* emscripten_key) {
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ImGuiKey translate_key(char const* emscripten_key)
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{
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// Translate an emscripten-provided browser string describing a keycode to an imgui key code
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if(auto it{key_translate_lookup.find(emscripten_key)}; it != key_translate_lookup.end()) {
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if (auto it{key_translate_lookup.find(emscripten_key)}; it != key_translate_lookup.end())
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{
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return it->second;
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}
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return ImGuiKey_None;
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}
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constexpr ImGuiMouseButton translate_mousebutton(unsigned short emscripten_button) __attribute__((__const__));
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constexpr ImGuiMouseButton translate_mousebutton(unsigned short emscripten_button) {
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constexpr ImGuiMouseButton translate_mousebutton(unsigned short emscripten_button)
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{
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// Translate an emscripten-provided integer describing a mouse button to an imgui mouse button
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if(emscripten_button == 1) return ImGuiMouseButton_Middle; // 1 = middle mouse button
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if(emscripten_button == 2) return ImGuiMouseButton_Right; // 2 = right mouse button
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if(emscripten_button > ImGuiMouseButton_COUNT) return ImGuiMouseButton_Middle; // treat any weird clicks on unexpected buttons (button 6 upwards) as middle mouse
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if (emscripten_button == 1) return ImGuiMouseButton_Middle; // 1 = middle mouse button
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if (emscripten_button == 2) return ImGuiMouseButton_Right; // 2 = right mouse button
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if (emscripten_button > ImGuiMouseButton_COUNT) return ImGuiMouseButton_Middle; // treat any weird clicks on unexpected buttons (button 6 upwards) as middle mouse
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return emscripten_button; // any other button translates 1:1
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}
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} // anonymous namespace
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namespace emscripten_browser_cursor_internal {
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namespace emscripten_browser_cursor_internal
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{
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// Browser cursor helpers
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enum class cursor {
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enum class cursor
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{
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// General
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cursor_auto, // The UA will determine the cursor to display based on the current context. E.g., equivalent to text when hovering text.
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cursor_default, // The platform-dependent default cursor. Typically an arrow.
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@ -243,14 +248,16 @@ void unset();
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// Browser cursor helper implementation
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bool is_set() {
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bool is_set()
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{
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// Returns whether the cursor is currently set
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return EM_ASM_INT(
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return !(!document.body.style.cursor || document.body.style.cursor.length === 0 );
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);
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}
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std::string get_string() {
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std::string get_string()
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{
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// Return the current cursor setting as a string
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auto cursor_str_ptr{reinterpret_cast<char*>(EM_ASM_PTR(
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return stringToNewUTF8(document.body.style.cursor);
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@ -260,10 +267,12 @@ std::string get_string() {
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return cursor_str;
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}
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void set(cursor new_cursor) {
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void set(cursor new_cursor)
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{
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// Set the cursor according to the given enum
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// Note, implementations omitted for cursors not used by imgui. For full implementation, use https://github.com/Armchair-Software/emscripten-browser-cursor
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switch(new_cursor) {
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switch (new_cursor)
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{
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case cursor::cursor_default:
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default:
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EM_ASM(document.body.style.cursor = 'default';);
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@ -295,7 +304,8 @@ void set(cursor new_cursor) {
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}
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}
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void set(std::string const &new_cursor) {
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void set(std::string const &new_cursor)
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{
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// Set the cursor from an arbitrary string
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EM_ASM({
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document.body.style.cursor = UTF8ToString($0);
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@ -306,23 +316,27 @@ void set(std::string const &new_cursor) {
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namespace {
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void update_cursor() {
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void update_cursor()
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{
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// Sync any cursor changes due to ImGui to the browser's cursor
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static emscripten_browser_cursor_internal::cursor current_cursor{emscripten_browser_cursor_internal::cursor::invalid};
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static std::optional<std::string> cursor_to_restore;
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auto set_cursor_if_necessary{[&](emscripten_browser_cursor_internal::cursor new_cursor){
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if(new_cursor == current_cursor) return; // don't do anything if the current cursor is already set
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auto set_cursor_if_necessary{[&](emscripten_browser_cursor_internal::cursor new_cursor) {
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if (new_cursor == current_cursor) return; // don't do anything if the current cursor is already set
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current_cursor = new_cursor;
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emscripten_browser_cursor_internal::set(new_cursor);
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}};
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if(ImGui::GetIO().WantCaptureMouse) { // mouse is hovering over the gui
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if(!cursor_to_restore && emscripten_browser_cursor_internal::is_set()) {
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if (ImGui::GetIO().WantCaptureMouse) // mouse is hovering over the gui
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{
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if (!cursor_to_restore && emscripten_browser_cursor_internal::is_set())
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{
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cursor_to_restore = emscripten_browser_cursor_internal::get_string(); // back up the existing cursor when entering the imgui capture space
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}
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switch(ImGui::GetMouseCursor()) {
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switch (ImGui::GetMouseCursor())
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{
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case ImGuiMouseCursor_Arrow:
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set_cursor_if_necessary(emscripten_browser_cursor_internal::cursor::cursor_default);
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break;
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@ -351,8 +365,11 @@ void update_cursor() {
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set_cursor_if_necessary(emscripten_browser_cursor_internal::cursor::not_allowed);
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break;
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}
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} else { // mouse is away from the gui, hovering over some other part of the viewport
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if(cursor_to_restore) {
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}
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else // mouse is away from the gui, hovering over some other part of the viewport
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{
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if (cursor_to_restore)
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{
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emscripten_browser_cursor_internal::set(*cursor_to_restore); // restore the previous cursor when leaving the imgui capture space
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cursor_to_restore = std::nullopt;
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current_cursor = emscripten_browser_cursor_internal::cursor::invalid; // select an unused value for current cursor to force a set next time set_cursor_if_necessary is called
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@ -362,7 +379,8 @@ void update_cursor() {
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} // anonymous namespace
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void ImGui_ImplEmscripten_Init() {
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void ImGui_ImplEmscripten_Init()
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{
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// Initialise the Emscripten backend, setting input callbacks
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auto &imgui_io{ImGui::GetIO()};
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imgui_io.BackendPlatformName = "imgui_impl_emscripten";
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@ -376,7 +394,7 @@ void ImGui_ImplEmscripten_Init() {
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EMSCRIPTEN_EVENT_TARGET_WINDOW, // target
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nullptr, // userData
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false, // useCapture
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[](int /*event_type*/, EmscriptenMouseEvent const *mouse_event, void */*data*/){ // callback, event_type == EMSCRIPTEN_EVENT_MOUSEMOVE
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[](int /*event_type*/, EmscriptenMouseEvent const *mouse_event, void */*data*/) { // callback, event_type == EMSCRIPTEN_EVENT_MOUSEMOVE
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ImGui::GetIO().AddMousePosEvent(
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static_cast<float>(mouse_event->clientX),
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static_cast<float>(mouse_event->clientY)
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@ -388,7 +406,7 @@ void ImGui_ImplEmscripten_Init() {
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EMSCRIPTEN_EVENT_TARGET_WINDOW, // target
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nullptr, // userData
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false, // useCapture
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[](int /*event_type*/, EmscriptenMouseEvent const *mouse_event, void */*data*/){ // callback, event_type == EMSCRIPTEN_EVENT_MOUSEDOWN
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[](int /*event_type*/, EmscriptenMouseEvent const *mouse_event, void */*data*/) { // callback, event_type == EMSCRIPTEN_EVENT_MOUSEDOWN
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ImGui::GetIO().AddMouseButtonEvent(translate_mousebutton(mouse_event->button), true); // translated button, down
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return true; // the event was consumed
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}
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@ -397,7 +415,7 @@ void ImGui_ImplEmscripten_Init() {
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EMSCRIPTEN_EVENT_TARGET_WINDOW, // target
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nullptr, // userData
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false, // useCapture
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[](int /*event_type*/, EmscriptenMouseEvent const *mouse_event, void */*data*/){ // callback, event_type == EMSCRIPTEN_EVENT_MOUSEUP
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[](int /*event_type*/, EmscriptenMouseEvent const *mouse_event, void */*data*/) { // callback, event_type == EMSCRIPTEN_EVENT_MOUSEUP
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ImGui::GetIO().AddMouseButtonEvent(translate_mousebutton(mouse_event->button), false); // translated button, up
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return true; // the event was consumed
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}
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@ -406,7 +424,7 @@ void ImGui_ImplEmscripten_Init() {
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EMSCRIPTEN_EVENT_TARGET_DOCUMENT, // target - WINDOW doesn't produce mouseenter events
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nullptr, // userData
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false, // useCapture
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[](int /*event_type*/, EmscriptenMouseEvent const *mouse_event, void */*data*/){ // callback, event_type == EMSCRIPTEN_EVENT_MOUSEENTER
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[](int /*event_type*/, EmscriptenMouseEvent const *mouse_event, void */*data*/) { // callback, event_type == EMSCRIPTEN_EVENT_MOUSEENTER
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ImGui::GetIO().AddMousePosEvent(
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static_cast<float>(mouse_event->clientX),
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static_cast<float>(mouse_event->clientY)
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@ -418,7 +436,7 @@ void ImGui_ImplEmscripten_Init() {
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EMSCRIPTEN_EVENT_TARGET_DOCUMENT, // target - WINDOW doesn't produce mouseenter events
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nullptr, // userData
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false, // useCapture
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[](int /*event_type*/, EmscriptenMouseEvent const */*mouse_event*/, void */*data*/){ // callback, event_type == EMSCRIPTEN_EVENT_MOUSELEAVE
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[](int /*event_type*/, EmscriptenMouseEvent const */*mouse_event*/, void */*data*/) { // callback, event_type == EMSCRIPTEN_EVENT_MOUSELEAVE
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auto &imgui_io{ImGui::GetIO()};
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imgui_io.AddMousePosEvent(-FLT_MAX, -FLT_MAX); // cursor is not in the window
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imgui_io.ClearInputKeys(); // clear pending input keys on mouse exit
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@ -429,9 +447,10 @@ void ImGui_ImplEmscripten_Init() {
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EMSCRIPTEN_EVENT_TARGET_WINDOW, // target
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nullptr, // userData
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false, // useCapture
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[](int /*event_type*/, EmscriptenWheelEvent const *wheel_event, void */*data*/){ // callback, event_type == EMSCRIPTEN_EVENT_WHEEL
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[](int /*event_type*/, EmscriptenWheelEvent const *wheel_event, void */*data*/) { // callback, event_type == EMSCRIPTEN_EVENT_WHEEL
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float scale{1.0f};
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switch(wheel_event->deltaMode) {
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switch (wheel_event->deltaMode)
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{
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case DOM_DELTA_PIXEL: // scrolling in pixels
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scale = 1.0f / 100.0f;
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break;
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@ -454,11 +473,12 @@ void ImGui_ImplEmscripten_Init() {
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EMSCRIPTEN_EVENT_TARGET_WINDOW, // target
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nullptr, // userData
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false, // useCapture
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[](int /*event_type*/, EmscriptenKeyboardEvent const *key_event, void */*data*/){ // callback, event_type == EMSCRIPTEN_EVENT_KEYDOWN
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[](int /*event_type*/, EmscriptenKeyboardEvent const *key_event, void */*data*/) { // callback, event_type == EMSCRIPTEN_EVENT_KEYDOWN
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auto const key{translate_key(key_event->code)};
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auto &imgui_io{ImGui::GetIO()};
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imgui_io.AddKeyEvent(key, true);
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switch(key) { // special cases for certain key events
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switch (key) // special cases for certain key events
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{
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case ImGuiKey_LeftCtrl: // additional events for modifier keys
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case ImGuiKey_RightCtrl:
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imgui_io.AddKeyEvent(ImGuiMod_Ctrl, true);
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@ -491,11 +511,12 @@ void ImGui_ImplEmscripten_Init() {
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EMSCRIPTEN_EVENT_TARGET_WINDOW, // target
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nullptr, // userData
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false, // useCapture
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[](int /*event_type*/, EmscriptenKeyboardEvent const *key_event, void */*data*/){ // callback, event_type == EMSCRIPTEN_EVENT_KEYUP
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[](int /*event_type*/, EmscriptenKeyboardEvent const *key_event, void */*data*/) { // callback, event_type == EMSCRIPTEN_EVENT_KEYUP
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auto const key{translate_key(key_event->code)};
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auto &imgui_io{ImGui::GetIO()};
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imgui_io.AddKeyEvent(key, false);
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switch(key) { // special cases for certain key events
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switch (key) // special cases for certain key events
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{
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case ImGuiKey_LeftCtrl: // additional events for modifier keys
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case ImGuiKey_RightCtrl:
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imgui_io.AddKeyEvent(ImGuiMod_Ctrl, false);
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@ -522,7 +543,7 @@ void ImGui_ImplEmscripten_Init() {
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EMSCRIPTEN_EVENT_TARGET_WINDOW, // target
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nullptr, // userData
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false, // useCapture
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[](int /*event_type*/, EmscriptenKeyboardEvent const *key_event, void */*data*/){ // callback, event_type == EMSCRIPTEN_EVENT_KEYPRESS
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[](int /*event_type*/, EmscriptenKeyboardEvent const *key_event, void */*data*/) { // callback, event_type == EMSCRIPTEN_EVENT_KEYPRESS
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auto &imgui_io{ImGui::GetIO()};
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imgui_io.AddInputCharactersUTF8(key_event->key);
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return imgui_io.WantCaptureKeyboard; // the event was consumed only if imgui wants to capture the keyboard
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@ -587,7 +608,8 @@ void ImGui_ImplEmscripten_Init() {
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// TODO: touch events
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}
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void ImGui_ImplEmscripten_Shutdown() {
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void ImGui_ImplEmscripten_Shutdown()
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{
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// Unset any callbacks set by Init
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emscripten_set_mousemove_callback( EMSCRIPTEN_EVENT_TARGET_WINDOW, nullptr, false, nullptr);
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emscripten_set_mousedown_callback( EMSCRIPTEN_EVENT_TARGET_WINDOW, nullptr, false, nullptr);
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@ -609,7 +631,8 @@ void ImGui_ImplEmscripten_Shutdown() {
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imgui_io.BackendFlags &= ~ImGuiBackendFlags_HasMouseCursors;
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}
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void ImGui_ImplEmscripten_NewFrame() {
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void ImGui_ImplEmscripten_NewFrame()
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{
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// Update any state that needs to be polled
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update_cursor();
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}
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