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IABSD.fr/xenocara/lib/mesa/src/intel/tools/imgui/imgui_impl_gtk3.cpp
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- lib/mesa/src/intel/tools/imgui/imgui_impl_gtk3.cpp
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// ImGui GLFW binding with OpenGL3 + shaders // In this binding, ImTextureID is used to store an OpenGL 'GLuint' texture identifier. Read the FAQ about ImTextureID in imgui.cpp. // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. // If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown(). // If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. // https://github.com/ocornut/imgui #include <stdio.h> #include "imgui/imgui.h" #include "imgui_impl_gtk3.h" #include <gtk/gtk.h> #define ARRAY_SIZE(arg) (sizeof(arg) / sizeof((arg)[0])) #define EVENT_MASK \ ((GdkEventMask) \ (GDK_STRUCTURE_MASK | \ GDK_FOCUS_CHANGE_MASK | \ GDK_EXPOSURE_MASK | \ GDK_PROPERTY_CHANGE_MASK | \ GDK_ENTER_NOTIFY_MASK | \ GDK_LEAVE_NOTIFY_MASK | \ GDK_KEY_PRESS_MASK | \ GDK_KEY_RELEASE_MASK | \ GDK_BUTTON_PRESS_MASK | \ GDK_BUTTON_RELEASE_MASK | \ GDK_POINTER_MOTION_MASK | \ GDK_SMOOTH_SCROLL_MASK | \ GDK_SCROLL_MASK)) // Data static GtkWidget* g_GtkGlArea = NULL; static guint64 g_Time = 0; static bool g_MousePressed[5] = { false, false, false, false, false }; static ImVec2 g_MousePosition = ImVec2(-1, -1); static float g_MouseWheel = 0.0f; static int g_NumRedraws = 0; static guint g_RedrawTimeout = 0; static const char* ImGui_ImplGtk3_GetClipboardText(void* user_data) { static char *last_clipboard = NULL; g_clear_pointer(&last_clipboard, g_free); last_clipboard = gtk_clipboard_wait_for_text(GTK_CLIPBOARD(user_data)); return last_clipboard; } static void ImGui_ImplGtk3_SetClipboardText(void* user_data, const char* text) { gtk_clipboard_set_text(GTK_CLIPBOARD(user_data), text, -1); } void ImGui_ImplGtk3_HandleEvent(GdkEvent *event) { ImGuiIO& io = ImGui::GetIO(); GdkEventType type = gdk_event_get_event_type(event); switch (type) { case GDK_MOTION_NOTIFY: { gdouble x = 0.0f, y = 0.0f; if (gdk_event_get_coords(event, &x, &y)) g_MousePosition = ImVec2(x, y); break; } case GDK_BUTTON_PRESS: case GDK_BUTTON_RELEASE: { guint button = 0; if (gdk_event_get_button(event, &button) && button > 0 && button <= 5) { if (type == GDK_BUTTON_PRESS) g_MousePressed[button - 1] = true; } break; } case GDK_SCROLL: { gdouble x, y; if (gdk_event_get_scroll_deltas(event, &x, &y)) g_MouseWheel = -y; break; } case GDK_KEY_PRESS: case GDK_KEY_RELEASE: { GdkEventKey *e = (GdkEventKey *) event; static const struct { enum ImGuiKey_ imgui; guint gdk; } gdk_key_to_imgui_key[] = { { ImGuiKey_Tab, GDK_KEY_Tab }, { ImGuiKey_Tab, GDK_KEY_ISO_Left_Tab }, { ImGuiKey_LeftArrow, GDK_KEY_Left }, { ImGuiKey_RightArrow, GDK_KEY_Right }, { ImGuiKey_UpArrow, GDK_KEY_Up }, { ImGuiKey_DownArrow, GDK_KEY_Down }, { ImGuiKey_PageUp, GDK_KEY_Page_Up }, { ImGuiKey_PageDown, GDK_KEY_Page_Down }, { ImGuiKey_Home, GDK_KEY_Home }, { ImGuiKey_End, GDK_KEY_End }, { ImGuiKey_Delete, GDK_KEY_Delete }, { ImGuiKey_Backspace, GDK_KEY_BackSpace }, { ImGuiKey_Enter, GDK_KEY_Return }, { ImGuiKey_Escape, GDK_KEY_Escape }, { ImGuiKey_A, GDK_KEY_a }, { ImGuiKey_C, GDK_KEY_c }, { ImGuiKey_V, GDK_KEY_v }, { ImGuiKey_X, GDK_KEY_x }, { ImGuiKey_Y, GDK_KEY_y }, { ImGuiKey_Z, GDK_KEY_z }, }; for (unsigned i = 0; i < ARRAY_SIZE(gdk_key_to_imgui_key); i++) { if (e->keyval == gdk_key_to_imgui_key[i].gdk) io.KeysDown[gdk_key_to_imgui_key[i].imgui] = type == GDK_KEY_PRESS; } gunichar c = gdk_keyval_to_unicode(e->keyval); if (g_unichar_isprint(c) && ImGuiKey_COUNT + c < ARRAY_SIZE(io.KeysDown)) io.KeysDown[ImGuiKey_COUNT + c] = type == GDK_KEY_PRESS; if (type == GDK_KEY_PRESS && e->string) io.AddInputCharactersUTF8(e->string); struct { bool *var; GdkModifierType modifier; guint keyvals[3]; } mods[] = { { &io.KeyCtrl, GDK_CONTROL_MASK, { GDK_KEY_Control_L, GDK_KEY_Control_R, 0 }, }, { &io.KeyShift, GDK_SHIFT_MASK, { GDK_KEY_Shift_L, GDK_KEY_Shift_R, 0 }, }, { &io.KeyAlt, GDK_MOD1_MASK, { GDK_KEY_Alt_L, GDK_KEY_Alt_R, 0 }, }, { &io.KeySuper, GDK_SUPER_MASK, { GDK_KEY_Super_L, GDK_KEY_Super_R, 0 }, } }; for (unsigned i = 0; i < ARRAY_SIZE(mods); i++) { *mods[i].var = (mods[i].modifier & e->state); bool match = false; for (int j = 0; mods[i].keyvals[j] != 0; j++) if (e->keyval == mods[i].keyvals[j]) match = true; if (match) *mods[i].var = type == GDK_KEY_PRESS; } break; } default: break; } // We trigger 2 subsequent redraws for each event because of the // way some ImGui widgets work. For example a Popup menu will only // appear a frame after a click happened. g_NumRedraws = 2; gtk_widget_queue_draw(g_GtkGlArea); } static gboolean handle_gdk_event(GtkWidget *widget, GdkEvent *event, void *data) { ImGui_ImplGtk3_HandleEvent(event); return true; } bool ImGui_ImplGtk3_Init(GtkWidget* gl_area, bool install_callbacks) { g_clear_pointer(&g_GtkGlArea, g_object_unref); g_GtkGlArea = GTK_WIDGET(g_object_ref(gl_area)); gtk_widget_realize(g_GtkGlArea); gtk_widget_set_can_focus(g_GtkGlArea, true); gtk_widget_grab_focus(g_GtkGlArea); if (install_callbacks) { gtk_widget_add_events(g_GtkGlArea, EVENT_MASK); g_signal_connect(g_GtkGlArea, "event", G_CALLBACK(handle_gdk_event), NULL); } ImGuiIO& io = ImGui::GetIO(); for (int i = 0; i < ImGuiKey_COUNT; i++) { io.KeyMap[i] = i; } io.SetClipboardTextFn = ImGui_ImplGtk3_SetClipboardText; io.GetClipboardTextFn = ImGui_ImplGtk3_GetClipboardText; io.ClipboardUserData = gtk_widget_get_clipboard(g_GtkGlArea, GDK_SELECTION_CLIPBOARD); return true; } void ImGui_ImplGtk3_Shutdown() { g_clear_pointer(&g_GtkGlArea, g_object_unref); if (g_RedrawTimeout) g_source_remove(g_RedrawTimeout); } static gboolean timeout_callback(gpointer data) { gtk_widget_queue_draw(g_GtkGlArea); g_RedrawTimeout = 0; return false; } static void kick_timeout_redraw(float timeout) { if (g_RedrawTimeout) return; g_RedrawTimeout = g_timeout_add(timeout * 1000, timeout_callback, NULL); } void ImGui_ImplGtk3_NewFrame() { bool next_redraw = false; if (g_NumRedraws > 0) { gtk_widget_queue_draw(g_GtkGlArea); g_NumRedraws--; next_redraw = true; } ImGuiIO& io = ImGui::GetIO(); // Setup display size (every frame to accommodate for window resizing) io.DisplaySize = ImVec2((float)gtk_widget_get_allocated_width(g_GtkGlArea), (float)gtk_widget_get_allocated_height(g_GtkGlArea)); int scale_factor = gtk_widget_get_scale_factor(g_GtkGlArea); io.DisplayFramebufferScale = ImVec2(scale_factor, scale_factor); // Setup time step guint64 current_time = g_get_monotonic_time(); io.DeltaTime = g_Time > 0 ? ((float)(current_time - g_Time) / 1000000) : (float)(1.0f/60.0f); g_Time = current_time; // Setup inputs if (gtk_widget_has_focus(g_GtkGlArea)) { io.MousePos = g_MousePosition; // Mouse position in screen coordinates (set to -1,-1 if no mouse / on another screen, etc.) } else { io.MousePos = ImVec2(-1,-1); } GdkWindow *window = gtk_widget_get_window(g_GtkGlArea); GdkDevice *pointer = gdk_device_manager_get_client_pointer(gdk_display_get_device_manager(gdk_display_get_default())); GdkModifierType modifiers; gdk_device_get_state(pointer, window, NULL, &modifiers); for (int i = 0; i < 3; i++) { io.MouseDown[i] = g_MousePressed[i] || (modifiers & (GDK_BUTTON1_MASK << i)) != 0; g_MousePressed[i] = false; } io.MouseWheel = g_MouseWheel; g_MouseWheel = 0.0f; // Hide OS mouse cursor if ImGui is drawing it GdkDisplay *display = gdk_window_get_display(window); GdkCursor *cursor = gdk_cursor_new_from_name(display, io.MouseDrawCursor ? "none" : "default"); gdk_window_set_cursor(window, cursor); g_object_unref(cursor); if (!next_redraw && io.WantTextInput) kick_timeout_redraw(0.2); }